diff options
| author |   Sachin Saxena <sachin.saxena@freescale.com> | 2018-02-28 20:28:52 +0530 |
|---|---|---|
| committer |   Sachin Saxena <sachin.saxena@nxp.com> | 2018-02-28 20:34:56 +0530 |
| commit | 0689fce93ba269c48f83a2f70f971b3976d04c90 (patch) | |
| tree | 4cc2908df3598507cc1828ac19d8c43b22450ffa /src/vppinfra | |
| parent | 746b57564deede624261ab8a96c94f562f24d22c (diff) | |
| parent | d594711a5d79859a7d0bde83a516f7ab52051d9b (diff) | |
Merge branch 'stable/1710' of https://gerrit.fd.io/r/vpp into 17101710
Diffstat (limited to 'src/vppinfra')
179 files changed, 59712 insertions, 0 deletions
diff --git a/src/vppinfra/README b/src/vppinfra/README new file mode 100644 index 00000000..579696b6 --- /dev/null +++ b/src/vppinfra/README @@ -0,0 +1,43 @@ +Welcome to vppinfra a programming library of basic data structures. + +vec.c dynamic vectors +bitmap.h dynamic bitmaps +heap.c allocation heap of objects (sub-objects have variable size) +pool.h allocation pool (like heap with size always 1) +hash.c dynamic hash tables +mheap.c memory allocator (a la dlmalloc) + +format.c extendable printf-like thing built on top of vectors +std-formats.c formats for unix data structures, networking stuff, ... +timer.c arrange for functions to be called at given times. + + +Build, Test, Install, Use... +---------------------------- + If this package came from the distribution tar ball, skip to the + Build Section. If this was a gentoo ebuild, after emerge/ebuild, + skip to the Use Section; otherwise, start with Pre-Build. + +Pre-Build +----------- + 1) svn checkout svn://teaktechnologies.com/fn/trunk/clib clib + 2) autoreconf [-v][-f][-i] # regenerate configuration files + +Build +----- + 1) cd BUILD # which may be different than this SRC dir + 2) ${SRC}/configure [--host=CHOST] + 3) make + +Test +---- + If not cross-compiling (i.e. CBUILD == CHOST), use "make check" to + run the validation programs. + +Install +------- + With the root effective user ID (i.e. su or sudo), run "make install". + +Use +--- + We need to reference man pages and theory of operation. diff --git a/src/vppinfra/anneal.c b/src/vppinfra/anneal.c new file mode 100644 index 00000000..35d10946 --- /dev/null +++ b/src/vppinfra/anneal.c @@ -0,0 +1,172 @@ +/* + Copyright (c) 2011 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#include <vppinfra/anneal.h> + +/* + * Optimize an objective function by simulated annealing + * + * Here are a couple of short, easily-understood + * descriptions of simulated annealing: + * + * http://www.cs.sandia.gov/opt/survey/sa.html + * Numerical Recipes in C, 2nd ed., 444ff + * + * The description in the Wikipedia is not helpful. + * + * The algorithm tries to produce a decent answer to combinatorially + * explosive optimization problems by analogy to slow cooling + * of hot metal, aka annealing. + * + * There are (at least) three problem-dependent annealing parameters + * to consider: + * + * t0, the initial "temperature. Should be set so that the probability + * of accepting a transition to a higher cost configuration is + * initially about 0.8. + * + * ntemps, the number of temperatures to use. Each successive temperature + * is some fraction of the previous temperature. + * + * nmoves_per_temp, the number of configurations to try at each temperature + * + * It is a black art to set ntemps, nmoves_per_temp, and the rate + * at which the temperature drops. Go too fast with too few iterations, + * and the computation falls into a local minimum instead of the + * (desired) global minimum. + */ + +void +clib_anneal (clib_anneal_param_t * p) +{ + f64 t; + f64 cost, prev_cost, delta_cost, initial_cost, best_cost; + f64 random_accept, delta_cost_over_t; + f64 total_increase = 0.0, average_increase; + u32 i, j; + u32 number_of_increases = 0; + u32 accepted_this_temperature; + u32 best_saves_this_temperature; + int accept; + + t = p->initial_temperature; + best_cost = initial_cost = prev_cost = p->anneal_metric (p->opaque); + p->anneal_save_best_configuration (p->opaque); + + if (p->flags & CLIB_ANNEAL_VERBOSE) + fformat (stdout, "Initial cost %.2f\n", initial_cost); + + for (i = 0; i < p->number_of_temperatures; i++) + { + accepted_this_temperature = 0; + best_saves_this_temperature = 0; + + p->anneal_restore_best_configuration (p->opaque); + cost = best_cost; + + for (j = 0; j < p->number_of_configurations_per_temperature; j++) + { + p->anneal_new_configuration (p->opaque); + cost = p->anneal_metric (p->opaque); + + delta_cost = cost - prev_cost; + + /* cost function looks better, accept this move */ + if (p->flags & CLIB_ANNEAL_MINIMIZE) + accept = delta_cost < 0.0; + else + accept = delta_cost > 0.0; + + if (accept) + { + if (p->flags & CLIB_ANNEAL_MINIMIZE) + if (cost < best_cost) + { + if (p->flags & CLIB_ANNEAL_VERBOSE) + fformat (stdout, "New best cost %.2f\n", cost); + best_cost = cost; + p->anneal_save_best_configuration (p->opaque); + best_saves_this_temperature++; + } + + accepted_this_temperature++; + prev_cost = cost; + continue; + } + + /* cost function worse, keep stats to suggest t0 */ + total_increase += (p->flags & CLIB_ANNEAL_MINIMIZE) ? + delta_cost : -delta_cost; + + number_of_increases++; + + /* + * Accept a higher cost with Pr { e^(-(delta_cost / T)) }, + * equivalent to rnd[0,1] < e^(-(delta_cost / T)) + * + * AKA, the Boltzmann factor. + */ + random_accept = random_f64 (&p->random_seed); + + delta_cost_over_t = delta_cost / t; + + if (random_accept < exp (-delta_cost_over_t)) + { + accepted_this_temperature++; + prev_cost = cost; + continue; + } + p->anneal_restore_previous_configuration (p->opaque); + } + + if (p->flags & CLIB_ANNEAL_VERBOSE) + { + fformat (stdout, "Temp %.2f, cost %.2f, accepted %d, bests %d\n", t, + prev_cost, accepted_this_temperature, + best_saves_this_temperature); + fformat (stdout, "Improvement %.2f\n", initial_cost - prev_cost); + fformat (stdout, "-------------\n"); + } + + t = t * p->temperature_step; + } + + /* + * Empirically, one wants the probability of accepting a move + * at the initial temperature to be about 0.8. + */ + average_increase = total_increase / (f64) number_of_increases; + p->suggested_initial_temperature = average_increase / 0.22; /* 0.22 = -ln (0.8) */ + + p->final_temperature = t; + p->final_metric = p->anneal_metric (p->opaque); + + if (p->flags & CLIB_ANNEAL_VERBOSE) + { + fformat (stdout, "Average cost increase from a bad move: %.2f\n", + average_increase); + fformat (stdout, "Suggested t0 = %.2f\n", + p->suggested_initial_temperature); + } +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/anneal.h b/src/vppinfra/anneal.h new file mode 100644 index 00000000..148d38ba --- /dev/null +++ b/src/vppinfra/anneal.h @@ -0,0 +1,89 @@ +/* + Copyright (c) 2011 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#ifndef __included_anneal_h__ +#define __included_anneal_h__ + +#include <vppinfra/clib.h> +#include <vppinfra/format.h> +#include <vppinfra/random.h> +#include <math.h> + +typedef struct +{ + /* Initial temperature */ + f64 initial_temperature; + + /* Temperature fraction at each step, 0.95 is reasonable */ + f64 temperature_step; + + /* Number of temperatures used */ + u32 number_of_temperatures; + + /* Number of configurations tried at each temperature */ + u32 number_of_configurations_per_temperature; + + u32 flags; +#define CLIB_ANNEAL_VERBOSE (1<<0) +#define CLIB_ANNEAL_MINIMIZE (1<<1) /* mutually exclusive */ +#define CLIB_ANNEAL_MAXIMIZE (1<<2) /* mutually exclusive */ + + /* Random number seed, set to ensure repeatable results */ + u32 random_seed; + + /* Opaque data passed to callbacks */ + void *opaque; + + /* Final temperature (output) */ + f64 final_temperature; + + /* Final metric (output) */ + f64 final_metric; + + /* Suggested initial temperature (output) */ + f64 suggested_initial_temperature; + + + /*--- Callbacks ---*/ + + /* objective function to minimize */ + f64 (*anneal_metric) (void *opaque); + + /* Generate a new configuration */ + void (*anneal_new_configuration) (void *opaque); + + /* Restore the previous configuration */ + void (*anneal_restore_previous_configuration) (void *opaque); + + /* Save best configuration found e.g at a certain temperature */ + void (*anneal_save_best_configuration) (void *opaque); + + /* restore best configuration found e.g at a certain temperature */ + void (*anneal_restore_best_configuration) (void *opaque); + +} clib_anneal_param_t; + +void clib_anneal (clib_anneal_param_t * p); + +#endif /* __included_anneal_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/asm_mips.h b/src/vppinfra/asm_mips.h new file mode 100644 index 00000000..7c9e6958 --- /dev/null +++ b/src/vppinfra/asm_mips.h @@ -0,0 +1,351 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2004 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_asm_mips_h +#define included_asm_mips_h + +/* Encoding of MIPS instructions. */ +/* Encoding of opcode field (op). */ +#define mips_foreach_opcode \ + _(SPECIAL) _(REGIMM) _(j) _(jal) _(beq) _(bne) _(blez) _(bgtz) \ + _(addi) _(addiu) _(slti) _(sltiu) _(andi) _(ori) _(xori) _(lui) \ + _(COP0) _(COP1) _(COP2) _(COP1X) _(beql) _(bnel) _(blezl) _(bgtzl) \ + _(daddi) _(daddiu) _(ldl) _(ldr) _(SPECIAL2) _(jalx) _(MDMX) _(O37) \ + _(lb) _(lh) _(lwl) _(lw) _(lbu) _(lhu) _(lwr) _(lwu) \ + _(sb) _(sh) _(swl) _(sw) _(sdl) _(sdr) _(swr) _(cache) \ + _(ll) _(lwc1) _(lwc2) _(pref) _(lld) _(ldc1) _(ldc2) _(ld) \ + _(sc) _(swc1) _(swc2) _(o73) _(scd) _(sdc1) _(sdc2) _(sd) + +/* Encoding of funct field. */ +#define mips_foreach_special_funct \ + _(sll) _(MOVCI) _(srl) _(sra) _(sllv) _(o05) _(srlv) _(srav) \ + _(jr) _(jalr) _(movz) _(movn) _(syscall) _(break) _(o16) _(sync) \ + _(mfhi) _(mthi) _(mflo) _(mtlo) _(dsllv) _(o25) _(dsrlv) _(dsrav) \ + _(mult) _(multu) _(div) _(divu) _(dmult) _(dmultu) _(ddiv) _(ddivu) \ + _(add) _(addu) _(sub) _(subu) _(and) _(or) _(xor) _(nor) \ + _(o50) _(o51) _(slt) _(sltu) _(dadd) _(daddu) _(dsub) _(dsubu) \ + _(tge) _(tgeu) _(tlt) _(tltu) _(teq) _(o65) _(tne) _(o67) \ + _(dsll) _(o71) _(dsrl) _(dsra) _(dsll32) _(o75) _(dsrl32) _(dsra32) + +/* SPECIAL2 encoding of funct field. */ +#define mips_foreach_special2_funct \ + _(madd) _(maddu) _(mul) _(o03) _(msub) _(msubu) _(o06) _(o07) \ + _(o10) _(o11) _(o12) _(o13) _(o14) _(o15) _(o16) _(o17) \ + _(o20) _(o21) _(o22) _(o23) _(o24) _(o25) _(o26) _(o27) \ + _(o30) _(o31) _(o32) _(o33) _(o34) _(o35) _(o36) _(o37) \ + _(clz) _(clo) _(o42) _(o43) _(dclz) _(dclo) _(o46) _(o47) \ + _(o50) _(o51) _(o52) _(o53) _(o54) _(o55) _(o56) _(o57) \ + _(o60) _(o61) _(o62) _(o63) _(o64) _(o65) _(o66) _(o67) \ + _(o70) _(o71) _(o72) _(o73) _(o74) _(o75) _(o76) _(sdbbp) + +/* REGIMM encoding of rt field. */ +#define mips_foreach_regimm_rt \ + _(bltz) _(bgez) _(bltzl) _(bgezl) _(o04) _(o05) _(o06) _(o07) \ + _(tgei) _(tgeiu) _(tltiu) _(teqi) _(o14) _(tnei) _(o16) _(o17) \ + _(bltzal) _(bgezal) _(bltzall) _(bgezall) _(o24) _(o25) _(o26) _(o27) \ + _(o30) _(o31) _(o32) _(o33) _(o34) _(o35) _(o36) _(o37) + +/* COP0 encoding of rs field. */ +#define mips_foreach_cop0_rs \ + _(mfc0) _(dmfc0) _(o02) _(o03) _(mtc0) _(dmtc0) _(o06) _(o07) \ + _(o10) _(o11) _(o12) _(o13) _(o14) _(o15) _(o16) _(o17) \ + _(C0) _(o21) _(o22) _(o23) _(o24) _(o25) _(o26) _(o27) \ + _(o30) _(o31) _(o32) _(o33) _(o34) _(o35) _(o36) _(o37) + +/* COP0 encoding of funct when rs == RS_CO */ +#define mips_foreach_cop0_funct \ + _(o00) _(tlbr) _(tlbwi) _(o03) _(o04) _(o05) _(tlbwr) _(o07) \ + _(tlbp) _(o11) _(o12) _(o13) _(o14) _(o15) _(o16) _(o17) \ + _(o20) _(o21) _(o22) _(o23) _(o24) _(o25) _(o26) _(o27) \ + _(eret) _(o31) _(o32) _(o33) _(o34) _(o35) _(o36) _(deret) \ + _(wait) _(o41) _(o42) _(o43) _(o44) _(o45) _(o46) _(o47) \ + _(o50) _(o51) _(o52) _(o53) _(o54) _(o55) _(o56) _(o57) \ + _(o60) _(o61) _(o62) _(o63) _(o64) _(o65) _(o66) _(o67) \ + _(o70) _(o71) _(o72) _(o73) _(o74) _(o75) _(o76) _(o77) + +/* COP1 encoding of rs field. */ +#define mips_foreach_cop1_rs \ + _(mfc1) _(dmfc1) _(cfc1) _(o03) _(mtc1) _(dmtc1) _(ctc1) _(o07) \ + _(BC1) _(o11) _(o12) _(o13) _(o14) _(o15) _(o16) _(o17) \ + _(S) _(D) _(o22) _(o23) _(W) _(L) _(o26) _(o27) \ + _(o30) _(o31) _(o32) _(o33) _(o34) _(o35) _(o36) _(o37) + +/* COP1 encoding of funct for S and D */ +#define mips_foreach_cop1_funct \ + _(add) _(sub) _(mul) _(div) _(sqrt) _(abs) _(mov) _(neg) \ + _(roundl) _(truncl) _(ceill) _(floorl) _(roundw) _(truncw) _(ceilw) _(floorw) \ + _(o20) _(MOVCF) _(movz) _(movn) _(o24) _(recip) _(rsqrt) _(o27) \ + _(o30) _(o31) _(o32) _(o33) _(o34) _(o35) _(o36) _(o37) \ + _(cvts) _(cvtd) _(o42) _(o43) _(cvtw) _(cvtl) _(o46) _(o47) \ + _(o50) _(o51) _(o52) _(o53) _(o54) _(o55) _(o56) _(o57) \ + _(cf) _(cun) _(ceq) _(cueq) _(colt) _(cult) _(cole) _(cule) \ + _(csf) _(cngle) _(cseq) _(cngl) _(clt) _(cnge) _(cle) _(cngt) + +/* COP1X encoding of funct */ +#define mips_foreach_cop1x_funct \ + _(lwxc1) _(ldxc1) _(o02) _(o03) _(o04) _(luxc1) _(o06) _(o07) \ + _(swxc1) _(sdxc1) _(o12) _(o13) _(o14) _(suxc1) _(o16) _(prefx) \ + _(o20) _(o21) _(o22) _(o23) _(o24) _(o25) _(o26) _(o27) \ + _(o30) _(o31) _(o32) _(o33) _(o34) _(o35) _(o36) _(o37) \ + _(madds) _(maddd) _(o42) _(o43) _(o44) _(o45) _(o46) _(o47) \ + _(msubs) _(msubd) _(o52) _(o53) _(o54) _(o55) _(o56) _(o57) \ + _(nmadds) _(nmaddd) _(o62) _(o63) _(o64) _(o65) _(o66) _(o67) \ + _(nmsubs) _(nmsubd) _(o72) _(o73) _(o74) _(o75) _(o76) _(o77) + +#define mips_foreach_mdmx_funct \ + _(msgn) _(ceq) _(pickf) _(pickt) _(clt) _(cle) _(min) _(max) \ + _(o10) _(o11) _(sub) _(add) _(and) _(xor) _(or) _(nor) \ + _(sll) _(o21) _(srl) _(sra) _(o24) _(o25) _(o26) _(o27) \ + _(alniob) _(alnvob) _(alniqh) _(alnvqh) _(o34) _(o35) _(o36) _(shfl) \ + _(rzu) _(rnau) _(rneu) _(o43) _(rzs) _(rnas) _(rnes) _(o47) \ + _(o50) _(o51) _(o52) _(o53) _(o54) _(o55) _(o56) _(o57) \ + _(mul) _(o61) _(muls) _(mula) _(o64) _(o65) _(suba) _(adda) \ + _(o70) _(o71) _(o72) _(o73) _(o74) _(o75) _(wac) _(rac) + +#define _(f) MIPS_OPCODE_##f, +typedef enum +{ + mips_foreach_opcode +} mips_insn_opcode_t; +#undef _ + +#define _(f) MIPS_SPECIAL_FUNCT_##f, +typedef enum +{ + mips_foreach_special_funct +} mips_insn_special_funct_t; +#undef _ + +#define _(f) MIPS_SPECIAL2_FUNCT_##f, +typedef enum +{ + mips_foreach_special2_funct +} mips_insn_special2_funct_t; +#undef _ + +#define _(f) MIPS_REGIMM_RT_##f, +typedef enum +{ + mips_foreach_regimm_rt +} mips_insn_regimm_rt_t; +#undef _ + +#define _(f) MIPS_COP0_RS_##f, +typedef enum +{ + mips_foreach_cop0_rs +} mips_insn_cop0_rs_t; +#undef _ + +#define _(f) MIPS_COP0_FUNCT_##f, +typedef enum +{ + mips_foreach_cop0_funct +} mips_insn_cop0_funct_t; +#undef _ + +#define _(f) MIPS_COP1_RS_##f, +typedef enum +{ + mips_foreach_cop1_rs +} mips_insn_cop1_rs_t; +#undef _ + +#define _(f) MIPS_COP1_FUNCT_##f, +typedef enum +{ + mips_foreach_cop1_funct +} mips_insn_cop1_funct_t; +#undef _ + +#define _(f) MIPS_COP1X_FUNCT_##f, +typedef enum +{ + mips_foreach_cop1x_funct +} mips_insn_cop1x_funct_t; +#undef _ + +#define _(f) MIPS_MDMX_FUNCT_##f, +typedef enum +{ + mips_foreach_mdmx_funct +} mips_insn_mdmx_funct_t; +#undef _ + +always_inline mips_insn_opcode_t +mips_insn_get_op (u32 insn) +{ + return (insn >> 26) & 0x3f; +} + +always_inline u32 +mips_insn_get_rs (u32 insn) +{ + return (insn >> 21) & 0x1f; +} + +always_inline u32 +mips_insn_get_rt (u32 insn) +{ + return (insn >> 16) & 0x1f; +} + +always_inline u32 +mips_insn_get_rd (u32 insn) +{ + return (insn >> 11) & 0x1f; +} + +always_inline u32 +mips_insn_get_sa (u32 insn) +{ + return (insn >> 6) & 0x1f; +} + +always_inline u32 +mips_insn_get_funct (u32 insn) +{ + return (insn >> 0) & 0x3f; +} + +always_inline i32 +mips_insn_get_immediate (u32 insn) +{ + return (((i32) insn) << 16) >> 16; +} + +always_inline u32 +mips_insn_encode_i_type (int op, int rs, int rt, int immediate) +{ + u32 insn; + insn = immediate; + insn |= rt << 16; + insn |= rs << 21; + insn |= op << 26; + + ASSERT (mips_insn_get_immediate (insn) == immediate); + ASSERT (mips_insn_get_rt (insn) == rt); + ASSERT (mips_insn_get_rs (insn) == rt); + ASSERT (mips_insn_get_op (insn) == op); + + return insn; +} + +always_inline u32 +mips_insn_encode_j_type (int op, u32 addr) +{ + u32 insn; + + insn = (addr & ((1 << 28) - 1)) / 4; + insn |= op << 26; + + return insn; +} + +always_inline u32 +mips_insn_encode_r_type (int op, int rs, int rt, int rd, int sa, int funct) +{ + u32 insn; + insn = funct; + insn |= sa << 6; + insn |= rd << 11; + insn |= rt << 16; + insn |= rs << 21; + insn |= op << 26; + + ASSERT (mips_insn_get_funct (insn) == funct); + ASSERT (mips_insn_get_sa (insn) == sa); + ASSERT (mips_insn_get_rd (insn) == rd); + ASSERT (mips_insn_get_rt (insn) == rt); + ASSERT (mips_insn_get_rs (insn) == rt); + ASSERT (mips_insn_get_op (insn) == op); + + return insn; +} + +#define mips_insn_r(op,funct,rd,rs,rt,sa) \ + mips_insn_encode_r_type (MIPS_OPCODE_##op, \ + (rs), (rt), (rd), (sa), \ + MIPS_##op##_FUNCT_##funct) + +#define mips_insn_i(op,rs,rt,imm) \ + mips_insn_encode_i_type (MIPS_OPCODE_##op, (rs), (rt), (imm)) + +#define mips_insn_j(op,target) \ + mips_insn_encode_i_type (MIPS_OPCODE_##op, (rs), (rt), (imm)) + +/* Generate unsigned load instructions of data of various sizes. */ +always_inline u32 +mips_insn_load (u32 rd, i32 offset, u32 base, u32 log2_bytes) +{ + int op; + + ASSERT (log2_bytes < 4); + switch (log2_bytes) + { + case 0: + op = MIPS_OPCODE_lbu; + break; + case 1: + op = MIPS_OPCODE_lhu; + break; + case 2: + op = MIPS_OPCODE_lwu; + break; + case 3: + op = MIPS_OPCODE_ld; + break; + } + + return mips_insn_encode_i_type (op, base, rd, offset); +} + +typedef enum +{ + MIPS_REG_SP = 29, + MIPS_REG_RA = 31, +} mips_reg_t; + +#endif /* included_asm_mips_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/asm_x86.c b/src/vppinfra/asm_x86.c new file mode 100644 index 00000000..16e41c24 --- /dev/null +++ b/src/vppinfra/asm_x86.c @@ -0,0 +1,1947 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* FIXME + opcode name remove to save table space; enum + x87 + 3dnow + cbw naming +*/ + +#include <vppinfra/error.h> +#include <vppinfra/byte_order.h> +#include <vppinfra/asm_x86.h> + +#define foreach_x86_gp_register \ + _ (AX) _ (CX) _ (DX) _ (BX) \ + _ (SP) _ (BP) _ (SI) _ (DI) + +typedef enum { +#define _(r) X86_INSN_GP_REG_##r, + foreach_x86_gp_register +#undef _ +} x86_insn_gp_register_t; + +typedef union { + struct { + u8 rm : 3; + u8 reg : 3; + u8 mode : 2; + }; + u8 byte; +} x86_insn_modrm_byte_t; + +typedef union { + struct { + u8 base : 3; + u8 index : 3; + u8 log2_scale : 2; + }; + u8 byte; +} x86_insn_sib_byte_t; + +always_inline uword +x86_insn_has_modrm_byte (x86_insn_t * insn) +{ + int i; + for (i = 0; i < ARRAY_LEN (insn->operands); i++) + switch (insn->operands[i].code) + { + case 'G': case 'E': case 'M': case 'R': + return 1; + } + return 0; +} + +always_inline uword +x86_insn_immediate_type (x86_insn_t * insn) +{ + int i; + for (i = 0; i < ARRAY_LEN (insn->operands); i++) + switch (insn->operands[i].code) + { + case 'J': + case 'I': + case 'O': + return insn->operands[i].type; + } + return 0; +} + +/* Opcode extension in modrm byte reg field. */ +#define foreach_x86_insn_modrm_reg_group \ + _ (1) _ (1a) _ (2) _ (3) _ (4) _ (5) _ (6) _ (7) \ + _ (8) _ (9) _ (10) _ (11) _ (12) _ (13) _ (14) \ + _ (15) _ (16) _ (p) + +#define foreach_x86_insn_sse_group \ + _ (10) _ (28) _ (50) _ (58) _ (60) _ (68) _ (70) _ (78) \ + _ (c0) _ (d0) _ (d8) _ (e0) _ (e8) _ (f0) _ (f8) + +enum { +#define _(x) X86_INSN_MODRM_REG_GROUP_##x, + foreach_x86_insn_modrm_reg_group +#undef _ +#define _(x) X86_INSN_SSE_GROUP_##x, + foreach_x86_insn_sse_group +#undef _ +}; + +enum { +#define _(x) \ + X86_INSN_FLAG_MODRM_REG_GROUP_##x \ + = X86_INSN_FLAG_SET_MODRM_REG_GROUP (1 + X86_INSN_MODRM_REG_GROUP_##x), + foreach_x86_insn_modrm_reg_group +#undef _ + +#define _(x) \ + X86_INSN_FLAG_SSE_GROUP_##x \ + = X86_INSN_FLAG_SET_SSE_GROUP (1 + X86_INSN_SSE_GROUP_##x), + foreach_x86_insn_sse_group +#undef _ +}; + +#define foreach_x86_gp_reg \ + _ (AX) _ (CX) _ (DX) _ (BX) \ + _ (SP) _ (BP) _ (SI) _ (DI) + +#define foreach_x86_condition \ + _ (o) _ (no) _ (b) _ (nb) \ + _ (z) _ (nz) _ (be) _ (nbe) \ + _ (s) _ (ns) _ (p) _ (np) \ + _ (l) _ (nl) _ (le) _ (nle) + +#define _3f(x,f,o0,o1,o2) \ +{ \ + .name = #x, \ + .flags = (f), \ + .operands[0] = { .data = #o0 }, \ + .operands[1] = { .data = #o1 }, \ + .operands[2] = { .data = #o2 }, \ +} + +#define _2f(x,f,o0,o1) _3f(x,f,o0,o1,__) +#define _1f(x,f,o0) _2f(x,f,o0,__) +#define _0f(x,f) _1f(x,f,__) + +#define _3(x,o0,o1,o2) _3f(x,0,o0,o1,o2) +#define _2(x,o0,o1) _2f(x,0,o0,o1) +#define _1(x,o0) _1f(x,0,o0) +#define _0(x) _0f(x,0) + +static x86_insn_t x86_insns_one_byte[256] = { + +#define _(x) \ + _2 (x, Eb, Gb), \ + _2 (x, Ev, Gv), \ + _2 (x, Gb, Eb), \ + _2 (x, Gv, Ev), \ + _2 (x, AL, Ib), \ + _2 (x, AX, Iz) + + /* 0x00 */ + _ (add), + _0 (push_es), + _0 (pop_es), + _ (or), + _0 (push_cs), + _0 (escape_two_byte), + + /* 0x10 */ + _ (adc), + _0 (push_ss), + _0 (pop_ss), + _ (sbb), + _0 (push_ds), + _0 (pop_ds), + + /* 0x20 */ + _ (and), + _0 (segment_es), + _0 (daa), + _ (sub), + _0 (segment_cs), + _0 (das), + + /* 0x30 */ + _ (xor), + _0 (segment_ss), + _0 (aaa), + _ (cmp), + _0 (segment_ds), + _0 (aas), + +#undef _ + + /* 0x40 */ +#define _(r) _1 (inc, r), + foreach_x86_gp_reg +#undef _ +#define _(r) _1 (dec, r), + foreach_x86_gp_reg +#undef _ + + /* 0x50 */ +#define _(r) _1f (push, X86_INSN_FLAG_DEFAULT_64_BIT, r), + foreach_x86_gp_reg +#undef _ +#define _(r) _1f (pop, X86_INSN_FLAG_DEFAULT_64_BIT, r), + foreach_x86_gp_reg +#undef _ + + /* 0x60 */ + _0 (pusha), + _0 (popa), + _2 (bound, Gv, Ma), + _2 (movsxd, Gv, Ed), + _0 (segment_fs), + _0 (segment_gs), + _0 (operand_type), + _0 (address_size), + _1f (push, X86_INSN_FLAG_DEFAULT_64_BIT, Iz), + _3 (imul, Gv, Ev, Iz), + _1f (push, X86_INSN_FLAG_DEFAULT_64_BIT, Ib), + _3 (imul, Gv, Ev, Ib), + _1 (insb, DX), + _1 (insw, DX), + _1 (outsb, DX), + _1 (outsw, DX), + + /* 0x70 */ +#define _(x) _1 (j##x, Jb), + foreach_x86_condition +#undef _ + + /* 0x80 */ + _2f (modrm_group_1, X86_INSN_FLAG_MODRM_REG_GROUP_1, Eb, Ib), + _2f (modrm_group_1, X86_INSN_FLAG_MODRM_REG_GROUP_1, Ev, Iz), + _2f (modrm_group_1, X86_INSN_FLAG_MODRM_REG_GROUP_1, Eb, Ib), + _2f (modrm_group_1, X86_INSN_FLAG_MODRM_REG_GROUP_1, Ev, Ib), + _2 (test, Eb, Gb), + _2 (test, Ev, Gv), + _2 (xchg, Eb, Gb), + _2 (xchg, Ev, Gv), + _2 (mov, Eb, Gb), + _2 (mov, Ev, Gv), + _2 (mov, Gb, Eb), + _2 (mov, Gv, Ev), + _2 (mov, Ev, Sw), + _2 (lea, Gv, Ev), + _2 (mov, Sw, Ew), + _1f (modrm_group_1a, X86_INSN_FLAG_MODRM_REG_GROUP_1a, Ev), + + /* 0x90 */ + _0 (nop), + _1 (xchg, CX), + _1 (xchg, DX), + _1 (xchg, BX), + _1 (xchg, SP), + _1 (xchg, BP), + _1 (xchg, SI), + _1 (xchg, DI), + _0 (cbw), + _0 (cwd), + _1 (call, Ap), + _0 (wait), + _0 (pushf), + _0 (popf), + _0 (sahf), + _0 (lahf), + + /* 0xa0 */ + _2 (mov, AL, Ob), + _2 (mov, AX, Ov), + _2 (mov, Ob, AL), + _2 (mov, Ov, AX), + _0 (movsb), + _0 (movsw), + _0 (cmpsb), + _0 (cmpsw), + _2 (test, AL, Ib), + _2 (test, AX, Iz), + _1 (stosb, AL), + _1 (stosw, AX), + _1 (lodsb, AL), + _1 (lodsw, AX), + _1 (scasb, AL), + _1 (scasw, AX), + + /* 0xb0 */ + _2 (mov, AL, Ib), + _2 (mov, CL, Ib), + _2 (mov, DL, Ib), + _2 (mov, BL, Ib), + _2 (mov, AH, Ib), + _2 (mov, CH, Ib), + _2 (mov, DH, Ib), + _2 (mov, BH, Ib), +#define _(r) _2 (mov, r, Iv), + foreach_x86_gp_reg +#undef _ + + /* 0xc0 */ + _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Eb, Ib), + _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Ev, Ib), + _1 (ret, Iw), + _0 (ret), + _2 (les, Gz, Mp), + _2 (lds, Gz, Mp), + _2f (modrm_group_11, X86_INSN_FLAG_MODRM_REG_GROUP_11, Eb, Ib), + _2f (modrm_group_11, X86_INSN_FLAG_MODRM_REG_GROUP_11, Ev, Iz), + _2 (enter, Iw, Ib), + _0 (leave), + _1 (ret, Iw), + _0 (ret), + _0 (int3), + _1 (int, Ib), + _0 (into), + _0 (iret), + + /* 0xd0 */ + _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Eb, 1b), + _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Ev, 1b), + _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Eb, CL), + _2f (modrm_group_2, X86_INSN_FLAG_MODRM_REG_GROUP_2, Ev, CL), + _0 (aam), + _0 (aad), + _0 (salc), + _0 (xlat), + /* FIXME x87 */ + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + + /* 0xe0 */ + _1 (loopnz, Jb), + _1 (loopz, Jb), + _1 (loop, Jb), + _1 (jcxz, Jb), + _2 (in, AL, Ib), + _2 (in, AX, Ib), + _2 (out, Ib, AL), + _2 (out, Ib, AX), + _1f (call, X86_INSN_FLAG_DEFAULT_64_BIT, Jz), + _1f ( jmp, X86_INSN_FLAG_DEFAULT_64_BIT, Jz), + _1 (jmp, Ap), + _1 (jmp, Jb), + _2 (in, AL, DX), + _2 (in, AX, DX), + _2 (out, DX, AL), + _2 (out, DX, AX), + + /* 0xf0 */ + _0 (lock), + _0 (int1), + _0 (repne), + _0 (rep), + _0 (hlt), + _0 (cmc), + _0f (modrm_group_3, X86_INSN_FLAG_MODRM_REG_GROUP_3), + _0f (modrm_group_3, X86_INSN_FLAG_MODRM_REG_GROUP_3), + _0 (clc), + _0 (stc), + _0 (cli), + _0 (sti), + _0 (cld), + _0 (std), + _1f (modrm_group_4, X86_INSN_FLAG_MODRM_REG_GROUP_4, Eb), + _0f (modrm_group_5, X86_INSN_FLAG_MODRM_REG_GROUP_5), +}; + +static x86_insn_t x86_insns_two_byte[256] = { + /* 0x00 */ + _0f (modrm_group_6, X86_INSN_FLAG_MODRM_REG_GROUP_6), + _0f (modrm_group_7, X86_INSN_FLAG_MODRM_REG_GROUP_7), + _2 (lar, Gv, Ew), + _2 (lsl, Gv, Ew), + _0 (bad), + _0 (syscall), + _0 (clts), + _0 (sysret), + _0 (invd), + _0 (wbinvd), + _0 (bad), + _0 (ud2), + _0 (bad), + _0f (modrm_group_p, X86_INSN_FLAG_MODRM_REG_GROUP_p), + _0 (femms), + _0 (escape_3dnow), + + /* 0x10 */ + _2f (movups, X86_INSN_FLAG_SSE_GROUP_10, Gx, Ex), + _2f (movups, X86_INSN_FLAG_SSE_GROUP_10, Ex, Gx), + _2f (movlps, X86_INSN_FLAG_SSE_GROUP_10, Ex, Gx), + _2f (movlps, X86_INSN_FLAG_SSE_GROUP_10, Gx, Ex), + _2f (unpcklps, X86_INSN_FLAG_SSE_GROUP_10, Gx, Ex), + _2f (unpckhps, X86_INSN_FLAG_SSE_GROUP_10, Gx, Ex), + _2f (movhps, X86_INSN_FLAG_SSE_GROUP_10, Ex, Gx), + _2f (movhps, X86_INSN_FLAG_SSE_GROUP_10, Gx, Ex), + _0f (modrm_group_16, X86_INSN_FLAG_MODRM_REG_GROUP_16), + _0 (nop), + _0 (nop), + _0 (nop), + _0 (nop), + _0 (nop), + _0 (nop), + _0 (nop), + + /* 0x20 */ + _2 (mov, Rv, Cv), + _2 (mov, Rv, Dv), + _2 (mov, Cv, Rv), + _2 (mov, Dv, Rv), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _2f (movaps, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), + _2f (movaps, X86_INSN_FLAG_SSE_GROUP_28, Ex, Gx), + _2f (cvtpi2ps, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), + _2f (movntps, X86_INSN_FLAG_SSE_GROUP_28, Mx, Gx), + _2f (cvttps2pi, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), + _2f (cvtps2pi, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), + _2f (ucomiss, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), + _2f (comiss, X86_INSN_FLAG_SSE_GROUP_28, Gx, Ex), + + /* 0x30 */ + _0 (wrmsr), + _0 (rdtsc), + _0 (rdmsr), + _0 (rdpmc), + _0 (sysenter), + _0 (sysexit), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + + /* 0x40 */ +#define _(x) _2 (cmov##x, Gv, Ev), + foreach_x86_condition +#undef _ + + /* 0x50 */ + _2f (movmskps, X86_INSN_FLAG_SSE_GROUP_50, Gd, Rx), + _2f (sqrtps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), + _2f (rsqrtps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), + _2f (rcpps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), + _2f (andps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), + _2f (andnps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), + _2f (orps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), + _2f (xorps, X86_INSN_FLAG_SSE_GROUP_50, Gx, Ex), + _2f (addps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), + _2f (mulps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), + _2f (cvtps2pd, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), + _2f (cvtdq2ps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), + _2f (subps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), + _2f (minps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), + _2f (divps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), + _2f (maxps, X86_INSN_FLAG_SSE_GROUP_58, Gx, Ex), + + /* 0x60 */ + _2f (punpcklbw, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), + _2f (punpcklwd, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), + _2f (punpckldq, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), + _2f (packsswb, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), + _2f (pcmpgtb, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), + _2f (pcmpgtw, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), + _2f (pcmpgtd, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), + _2f (packuswb, X86_INSN_FLAG_SSE_GROUP_60, Gm, Em), + _2f (punpckhbw, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), + _2f (punpckhwd, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), + _2f (punpckhdq, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), + _2f (packssdw, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), + _0f (bad, X86_INSN_FLAG_SSE_GROUP_68), + _0f (bad, X86_INSN_FLAG_SSE_GROUP_68), + _2f (movd, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), + _2f (movq, X86_INSN_FLAG_SSE_GROUP_68, Gm, Em), + + /* 0x70 */ + _3f (pshufw, X86_INSN_FLAG_SSE_GROUP_70, Gm, Em, Ib), + _0f (modrm_group_12, X86_INSN_FLAG_MODRM_REG_GROUP_12), + _0f (modrm_group_13, X86_INSN_FLAG_MODRM_REG_GROUP_13), + _0f (modrm_group_14, X86_INSN_FLAG_MODRM_REG_GROUP_14), + _2f (pcmpeqb, X86_INSN_FLAG_SSE_GROUP_70, Gm, Em), + _2f (pcmpeqw, X86_INSN_FLAG_SSE_GROUP_70, Gm, Em), + _2f (pcmpeqd, X86_INSN_FLAG_SSE_GROUP_70, Gm, Em), + _0f (emms, X86_INSN_FLAG_SSE_GROUP_70), + _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), + _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), + _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), + _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), + _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), + _0f (bad, X86_INSN_FLAG_SSE_GROUP_78), + _2f (movd, X86_INSN_FLAG_SSE_GROUP_78, Em, Gm), + _2f (movq, X86_INSN_FLAG_SSE_GROUP_78, Em, Gm), + + /* 0x80 */ +#define _(x) _1 (jmp##x, Jz), + foreach_x86_condition +#undef _ + + /* 0x90 */ +#define _(x) _1 (set##x, Eb), + foreach_x86_condition +#undef _ + + /* 0xa0 */ + _0 (push_fs), + _0 (pop_fs), + _0 (cpuid), + _2 (bt, Ev, Gv), + _3 (shld, Ev, Gv, Ib), + _3 (shld, Ev, Gv, CL), + _0 (bad), + _0 (bad), + _0 (push_gs), + _0 (pop_gs), + _0 (rsm), + _2 (bts, Ev, Gv), + _3 (shrd, Ev, Gv, Ib), + _3 (shrd, Ev, Gv, CL), + _0f (modrm_group_15, X86_INSN_FLAG_MODRM_REG_GROUP_15), + _2 (imul, Gv, Ev), + + /* 0xb0 */ + _2 (cmpxchg, Eb, Gb), + _2 (cmpxchg, Ev, Gv), + _2 (lss, Gz, Mp), + _2 (btr, Ev, Gv), + _2 (lfs, Gz, Mp), + _2 (lgs, Gz, Mp), + _2 (movzbl, Gv, Eb), + _2 (movzwl, Gv, Ew), + _0 (bad), + _0f (modrm_group_10, X86_INSN_FLAG_MODRM_REG_GROUP_10), + _2f (modrm_group_8, X86_INSN_FLAG_MODRM_REG_GROUP_8, Ev, Ib), + _2 (btc, Ev, Gv), + _2 (bsf, Gv, Ev), + _2 (bsr, Gv, Ev), + _2 (movsx, Gv, Eb), + _2 (movsx, Gv, Ew), + + /* 0xc0 */ + _2 (xadd, Eb, Gb), + _2 (xadd, Ev, Gv), + _3f (cmpps, X86_INSN_FLAG_SSE_GROUP_c0, Gx, Ex, Ib), + _2 (movnti, Mv, Gv), + _3f (pinsrw, X86_INSN_FLAG_SSE_GROUP_c0, Gm, Ew, Ib), + _3f (pextrw, X86_INSN_FLAG_SSE_GROUP_c0, Gd, Rm, Ib), + _3f (shufps, X86_INSN_FLAG_SSE_GROUP_c0, Gx, Ex, Ib), + _1f (modrm_group_9, X86_INSN_FLAG_MODRM_REG_GROUP_9, Mx), +#define _(r) _1 (bswap, r), + foreach_x86_gp_reg +#undef _ + + /* 0xd0 */ + _0f (bad, X86_INSN_FLAG_SSE_GROUP_d0), + _2f (psrlw, X86_INSN_FLAG_SSE_GROUP_d0, Gm, Em), + _2f (psrld, X86_INSN_FLAG_SSE_GROUP_d0, Gm, Em), + _2f (psrlq, X86_INSN_FLAG_SSE_GROUP_d0, Gm, Em), + _2f (paddq, X86_INSN_FLAG_SSE_GROUP_d0, Gm, Em), + _2f (pmullw, X86_INSN_FLAG_SSE_GROUP_d0, Gm, Em), + _0f (bad, X86_INSN_FLAG_SSE_GROUP_d0), + _2f (pmovmskb, X86_INSN_FLAG_SSE_GROUP_d0, Gd, Rm), + _2f (psubusb, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), + _2f (psubusw, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), + _2f (pminub, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), + _2f (pand, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), + _2f (paddusb, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), + _2f (paddusw, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), + _2f (pmaxub, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), + _2f (pandn, X86_INSN_FLAG_SSE_GROUP_d8, Gm, Em), + + /* 0xe0 */ + _2f (pavgb, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), + _2f (psraw, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), + _2f (psrad, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), + _2f (pavgw, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), + _2f (pmulhuw, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), + _2f (pmulhw, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), + _2f (bad, X86_INSN_FLAG_SSE_GROUP_e0, Gm, Em), + _2f (movntq, X86_INSN_FLAG_SSE_GROUP_e0, Mm, Gm), + _2f (psubsb, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), + _2f (psubsw, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), + _2f (pminsw, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), + _2f (por, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), + _2f (paddsb, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), + _2f (paddsw, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), + _2f (pmaxsw, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), + _2f (pxor, X86_INSN_FLAG_SSE_GROUP_e8, Gm, Em), + + /* 0xf0 */ + _0f (bad, X86_INSN_FLAG_SSE_GROUP_f0), + _2f (psllw, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), + _2f (pslld, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), + _2f (psllq, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), + _2f (pmuludq, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), + _2f (pmaddwd, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), + _2f (psadbw, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), + _2f (maskmovq, X86_INSN_FLAG_SSE_GROUP_f0, Gm, Em), + _2f (psubb, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), + _2f (psubw, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), + _2f (psubd, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), + _2f (psubq, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), + _2f (paddb, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), + _2f (paddw, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), + _2f (paddd, X86_INSN_FLAG_SSE_GROUP_f8, Gm, Em), + _0f (bad, X86_INSN_FLAG_SSE_GROUP_f8), +}; + +typedef struct { + x86_insn_t insns[8]; +} x86_insn_group8_t; + +/* Escape groups are indexed by modrm reg field. */ +static x86_insn_group8_t x86_insn_modrm_reg_groups[] = { + [X86_INSN_MODRM_REG_GROUP_1].insns = { + _0 (add), _0 ( or), _0 (adc), _0 (sbb), + _0 (and), _0 (sub), _0 (xor), _0 (cmp), + }, + + [X86_INSN_MODRM_REG_GROUP_1a].insns = { + _0f (pop, X86_INSN_FLAG_DEFAULT_64_BIT), + _0 (bad), _0 (bad), _0 (bad), + _0 (bad), _0 (bad), _0 (bad), _0 (bad), + }, + + [X86_INSN_MODRM_REG_GROUP_2].insns = { + _0 (rol), _0 (ror), _0 (rcl), _0 (rcr), + _0 (shl), _0 (shr), _0 (sal), _0 (sar), + }, + + [X86_INSN_MODRM_REG_GROUP_3].insns = { + _0 (test), _0 (test), _0 (not), _0 (neg), + _0 (mul), _0 (imul), _0 (div), _0 (idiv), + }, + + [X86_INSN_MODRM_REG_GROUP_4].insns = { + _0 (inc), _0 (dec), _0 (bad), _0 (bad), + _0 (bad), _0 (bad), _0 (bad), _0 (bad), + }, + + [X86_INSN_MODRM_REG_GROUP_5].insns = { + _1 (inc, Ev), + _1 (dec, Ev), + _1f (call, X86_INSN_FLAG_DEFAULT_64_BIT, Ev), + _1 (call, Mp), + _1f (jmp, X86_INSN_FLAG_DEFAULT_64_BIT, Ev), + _1 (jmp, Mp), + _1f (push, X86_INSN_FLAG_DEFAULT_64_BIT, Ev), + _0 (bad), + }, + + [X86_INSN_MODRM_REG_GROUP_6].insns = { + _1 (sldt, Ev), + _1 (str, Ev), + _1 (lldt, Ev), + _1 (ltr, Ev), + _1 (verr, Ev), + _1 (verw, Ev), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_MODRM_REG_GROUP_7].insns = { + _1 (sgdt, Mv), + _1 (sidt, Mv), + _1 (lgdt, Mv), + _1 (lidt, Mv), + _1 (smsw, Ev), + _0 (bad), + _1 (lmsw, Ew), + _1 (invlpg, Mv), + }, + + [X86_INSN_MODRM_REG_GROUP_8].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _2 (bt, Ev, Ib), + _2 (bts, Ev, Ib), + _2 (btr, Ev, Ib), + _2 (btc, Ev, Ib), + }, + + [X86_INSN_MODRM_REG_GROUP_9].insns = { + _0 (bad), + _1 (cmpxchg, Mx), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_MODRM_REG_GROUP_10].insns = { + _0 (bad), _0 (bad), _0 (bad), _0 (bad), + _0 (bad), _0 (bad), _0 (bad), _0 (bad), + }, + + [X86_INSN_MODRM_REG_GROUP_11].insns = { + _0 (mov), _0 (bad), _0 (bad), _0 (bad), + _0 (bad), _0 (bad), _0 (bad), _0 (bad), + }, + + [X86_INSN_MODRM_REG_GROUP_12].insns = { + _0 (bad), + _0 (bad), + _2 (psrlw, Rm, Ib), + _0 (bad), + _2 (psraw, Rm, Ib), + _0 (bad), + _2 (psllw, Rm, Ib), + _0 (bad), + }, + + [X86_INSN_MODRM_REG_GROUP_13].insns = { + _0 (bad), + _0 (bad), + _2 (psrld, Rm, Ib), + _0 (bad), + _2 (psrad, Rm, Ib), + _0 (bad), + _2 (pslld, Rm, Ib), + _0 (bad), + }, + + [X86_INSN_MODRM_REG_GROUP_14].insns = { + _0 (bad), + _0 (bad), + _2 (psrlq, Rm, Ib), + _0f (bad, 0), + _0 (bad), + _0 (bad), + _2 (psllq, Rm, Ib), + _0f (bad, 0), + }, + + [X86_INSN_MODRM_REG_GROUP_15].insns = { + _1 (fxsave, Mv), + _1 (fxrstor, Mv), + _1 (ldmxcsr, Mv), + _1 (stmxcsr, Mv), + _0 (bad), + _1 (lfence, Mv), + _1 (mfence, Mv), + _1 (sfence, Mv), + }, + + [X86_INSN_MODRM_REG_GROUP_16].insns = { + _1 (prefetch_nta, Mv), + _1 (prefetch_t0, Mv), + _1 (prefetch_t1, Mv), + _1 (prefetch_t2, Mv), + _1 (prefetch_nop, Mv), + _1 (prefetch_nop, Mv), + _1 (prefetch_nop, Mv), + _1 (prefetch_nop, Mv), + }, + + [X86_INSN_MODRM_REG_GROUP_p].insns = { + _1 (prefetch_exclusive, Mv), + _1 (prefetch_modified, Mv), + _1 (prefetch_nop, Mv), + _1 (prefetch_modified, Mv), + _1 (prefetch_nop, Mv), + _1 (prefetch_nop, Mv), + _1 (prefetch_nop, Mv), + _1 (prefetch_nop, Mv), + }, +}; + +static x86_insn_group8_t x86_insn_sse_groups_repz[] = { + [X86_INSN_SSE_GROUP_10].insns = { + _2 (movss, Gx, Ex), + _2 (movss, Ex, Gx), + _2 (movsldup, Gx, Ex), + _0 (bad), + _0 (bad), + _0 (bad), + _2 (movshdup, Gx, Ex), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_28].insns = { + _0 (bad), + _0 (bad), + _2 (cvtsi2ss, Gx, Ev), + _0 (bad), + _2 (cvttss2si, Gv, Ex), + _2 (cvtss2si, Gv, Ex), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_50].insns = { + _0 (bad), + _2 (sqrtss, Gx, Ex), + _2 (rsqrtps, Gx, Ex), + _2 (rcpss, Gx, Ex), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_58].insns = { + _2 (addss, Gx, Ex), + _2 (mulss, Gx, Ex), + _2 (cvtss2sd, Gx, Ex), + _2 (cvttps2dq, Gx, Ex), + _2 (subss, Gx, Ex), + _2 (minss, Gx, Ex), + _2 (divss, Gx, Ex), + _2 (maxss, Gx, Ex), + }, + + [X86_INSN_SSE_GROUP_60].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_68].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _2 (movdqu, Gx, Ex), + }, + + [X86_INSN_SSE_GROUP_70].insns = { + _3 (pshufhw, Gx, Ex, Ib), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_78].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _2 (movq, Gx, Ex), + _2 (movdqu, Ex, Gx), + }, + + [X86_INSN_SSE_GROUP_c0].insns = { + _0 (bad), + _0 (bad), + _3 (cmpss, Gx, Ex, Ib), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_d0].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _2 (movq2dq, Gx, Em), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_d8].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_e0].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _2 (cvtdq2pd, Gx, Ex), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_e8].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_f0].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_f8].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, +}; + +static x86_insn_group8_t x86_insn_sse_groups_operand_size[] = { + [X86_INSN_SSE_GROUP_10].insns = { + _2 (movupd, Gx, Ex), + _2 (movupd, Ex, Gx), + _2 (movlpd, Gx, Ex), + _2 (movlpd, Ex, Gx), + _2 (unpcklpd, Gx, Ex), + _2 (unpckhpd, Gx, Ex), + _2 (movhpd, Gx, Mx), + _2 (movhpd, Mx, Gx), + }, + + [X86_INSN_SSE_GROUP_28].insns = { + _2 (movapd, Gx, Ex), + _2 (movapd, Ex, Gx), + _2 (cvtpi2pd, Gx, Ex), + _2 (movntpd, Mx, Gx), + _2 (cvttpd2pi, Gx, Mx), + _2 (cvtpd2pi, Gx, Mx), + _2 (ucomisd, Gx, Ex), + _2 (comisd, Gx, Ex), + }, + + [X86_INSN_SSE_GROUP_50].insns = { + _2 (movmskpd, Gd, Rx), + _2 (sqrtpd, Gx, Ex), + _0 (bad), + _0 (bad), + _2 (andpd, Gx, Ex), + _2 (andnpd, Gx, Ex), + _2 (orpd, Gx, Ex), + _2 (xorpd, Gx, Ex), + }, + + [X86_INSN_SSE_GROUP_58].insns = { + _2 (addpd, Gx, Ex), + _2 (mulpd, Gx, Ex), + _2 (cvtpd2ps, Gx, Ex), + _2 (cvtps2dq, Gx, Ex), + _2 (subpd, Gx, Ex), + _2 (minpd, Gx, Ex), + _2 (divpd, Gx, Ex), + _2 (maxpd, Gx, Ex), + }, + + [X86_INSN_SSE_GROUP_60].insns = { + _2 (punpcklbw, Gx, Ex), + _2 (punpcklwd, Gx, Ex), + _2 (punpckldq, Gx, Ex), + _2 (packsswb, Gx, Ex), + _2 (pcmpgtb, Gx, Ex), + _2 (pcmpgtw, Gx, Ex), + _2 (pcmpgtd, Gx, Ex), + _2 (packuswb, Gx, Ex), + }, + + [X86_INSN_SSE_GROUP_68].insns = { + _2 (punpckhbw, Gx, Ex), + _2 (punpckhwd, Gx, Ex), + _2 (punpckhdq, Gx, Ex), + _2 (packssdw, Gx, Ex), + _2 (punpcklqdq, Gx, Ex), + _2 (punpckhqdq, Gx, Ex), + _2 (movd, Gx, Ev), + _2 (movdqa, Gx, Ex), + }, + + [X86_INSN_SSE_GROUP_70].insns = { + _3 (pshufd, Gx, Ex, Ib), + _0f (modrm_group_12, X86_INSN_FLAG_MODRM_REG_GROUP_12), + _0f (modrm_group_13, X86_INSN_FLAG_MODRM_REG_GROUP_13), + _0f (modrm_group_14, X86_INSN_FLAG_MODRM_REG_GROUP_14), + _2 (pcmpeqb, Gx, Ex), + _2 (pcmpeqw, Gx, Ex), + _2 (pcmpeqd, Gx, Ex), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_78].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _2 (haddpd, Gx, Ex), + _2 (hsubpd, Gx, Ex), + _2 (movd, Ev, Gx), + _2 (movdqa, Ex, Gx), + }, + + [X86_INSN_SSE_GROUP_c0].insns = { + _0 (bad), + _0 (bad), + _3 (cmppd, Gx, Ex, Ib), + _0 (bad), + _3 (pinsrw, Gx, Ew, Ib), + _3 (pextrw, Gd, Gx, Ib), + _3 (shufpd, Gx, Ex, Ib), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_d0].insns = { + _2 (addsubpd, Gx, Ex), + _2 (psrlw, Gx, Ex), + _2 (psrld, Gx, Ex), + _2 (psrlq, Gx, Ex), + _2 (paddq, Gx, Ex), + _2 (pmullw, Gx, Ex), + _2 (movq, Ex, Gx), + _2 (pmovmskb, Gd, Rx), + }, + + [X86_INSN_SSE_GROUP_d8].insns = { + _2 (psubusb, Gx, Ex), + _2 (psubusw, Gx, Ex), + _2 (pminub, Gx, Ex), + _2 (pand, Gx, Ex), + _2 (paddusb, Gx, Ex), + _2 (paddusw, Gx, Ex), + _2 (pmaxub, Gx, Ex), + _2 (pandn, Gx, Ex), + }, + + [X86_INSN_SSE_GROUP_e0].insns = { + _2 (pavgb, Gx, Ex), + _2 (psraw, Gx, Ex), + _2 (psrad, Gx, Ex), + _2 (pavgw, Gx, Ex), + _2 (pmulhuw, Gx, Ex), + _2 (pmulhw, Gx, Ex), + _2 (cvttpd2dq, Gx, Ex), + _2 (movntdq, Mx, Gx), + }, + + [X86_INSN_SSE_GROUP_e8].insns = { + _2 (psubsb, Gx, Ex), + _2 (psubsw, Gx, Ex), + _2 (pminsw, Gx, Ex), + _2 (por, Gx, Ex), + _2 (paddsb, Gx, Ex), + _2 (paddsw, Gx, Ex), + _2 (pmaxsw, Gx, Ex), + _2 (pxor, Gx, Ex), + }, + + [X86_INSN_SSE_GROUP_f0].insns = { + _0 (bad), + _2 (psllw, Gx, Ex), + _2 (pslld, Gx, Ex), + _2 (psllq, Gx, Ex), + _2 (pmuludq, Gx, Ex), + _2 (pmaddwd, Gx, Ex), + _2 (psadbw, Gx, Ex), + _2 (maskmovdqu, Gx, Ex), + }, + + [X86_INSN_SSE_GROUP_f8].insns = { + _2 (psubb, Gx, Ex), + _2 (psubw, Gx, Ex), + _2 (psubd, Gx, Ex), + _2 (psubq, Gx, Ex), + _2 (paddb, Gx, Ex), + _2 (paddw, Gx, Ex), + _2 (paddd, Gx, Ex), + _0 (bad), + }, +}; + +static x86_insn_group8_t x86_insn_sse_groups_repnz[] = { + [X86_INSN_SSE_GROUP_10].insns = { + _2 (movsd, Gx, Ex), + _2 (movsd, Ex, Gx), + _2 (movddup, Gx, Ex), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_28].insns = { + _0 (bad), + _0 (bad), + _2 (cvtsi2sd, Gx, Ev), + _0 (bad), + _2 (cvttsd2si, Gv, Ex), + _2 (cvtsd2si, Gv, Ex), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_50].insns = { + _0 (bad), + _2 (sqrtsd, Gx, Ex), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_58].insns = { + _2 (addsd, Gx, Ex), + _2 (mulsd, Gx, Ex), + _2 (cvtsd2ss, Gx, Ex), + _0 (bad), + _2 (subsd, Gx, Ex), + _2 (minsd, Gx, Ex), + _2 (divsd, Gx, Ex), + _2 (maxsd, Gx, Ex), + }, + + [X86_INSN_SSE_GROUP_60].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_68].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_70].insns = { + _3 (pshuflw, Gx, Ex, Ib), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_78].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _2 (haddps, Gx, Ex), + _2 (hsubps, Gx, Ex), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_c0].insns = { + _0 (bad), + _0 (bad), + _3 (cmpsd, Gx, Ex, Ib), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_d0].insns = { + _2 (addsubps, Gx, Ex), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _2 (movdq2q, Gm, Ex), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_d8].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_e0].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _2 (cvtpd2dq, Gx, Ex), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_e8].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_f0].insns = { + _2 (lddqu, Gx, Mx), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, + + [X86_INSN_SSE_GROUP_f8].insns = { + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + _0 (bad), + }, +}; + +#undef _ + +/* Parses memory displacements and immediates. */ +static u8 * x86_insn_parse_number (u32 log2_n_bytes, + u8 * code, u8 * code_end, + i64 * result) +{ + i64 x = 0; + + if (code + (1 << log2_n_bytes) > code_end) + return 0; + + switch (log2_n_bytes) + { + case 3: + x = clib_little_to_host_unaligned_mem_u64 ((u64 *) code); + break; + + case 2: + x = (i32) clib_little_to_host_unaligned_mem_u32 ((u32 *) code); + break; + + case 1: + x = (i16) clib_little_to_host_unaligned_mem_u16 ((u16 *) code); + break; + + case 0: + x = (i8) code[0]; + break; + + default: + ASSERT (0); + } + + *result = x; + return code + (1 << log2_n_bytes); +} + +static u32 +x86_insn_log2_immediate_bytes (x86_insn_parse_t * p, x86_insn_t * insn) +{ + u32 i = ~0; + switch (x86_insn_immediate_type (insn)) + { + case 'b': i = 0; break; + case 'w': i = 1; break; + case 'd': i = 2; break; + case 'q': i = 3; break; + + case 'z': + i = p->log2_effective_operand_bytes; + if (i > 2) i = 2; + break; + + case 'v': + i = p->log2_effective_operand_bytes; + break; + + default: + i = ~0; + break; + } + + return i; +} + +static u8 * +x86_insn_parse_modrm_byte (x86_insn_parse_t * x, + x86_insn_modrm_byte_t modrm, + u32 parse_flags, + u8 * code, + u8 * code_end) +{ + u8 effective_address_bits; + + if (parse_flags & X86_INSN_PARSE_64_BIT) + effective_address_bits = (x->flags & X86_INSN_ADDRESS_SIZE) ? 32 : 64; + else if (parse_flags & X86_INSN_PARSE_32_BIT) + effective_address_bits = (x->flags & X86_INSN_ADDRESS_SIZE) ? 16 : 32; + else + effective_address_bits = (x->flags & X86_INSN_ADDRESS_SIZE) ? 32 : 16; + + x->log2_effective_address_bytes = 1; + x->log2_effective_address_bytes += effective_address_bits > 16; + x->log2_effective_address_bytes += effective_address_bits > 32; + + x->regs[0] |= modrm.reg; + if (modrm.mode == 3) + x->regs[1] |= modrm.rm; + else + { + u32 log2_disp_bytes = ~0; + + x->flags |= X86_INSN_IS_ADDRESS; + + if (effective_address_bits != 16) + { + u8 has_sib_byte = 0; + + switch (modrm.mode) + { + case 0: + /* When base is bp displacement is present for mode 0. */ + if (modrm.rm == X86_INSN_GP_REG_BP) + { + log2_disp_bytes = x->log2_effective_address_bytes; + break; + } + else if (modrm.rm == X86_INSN_GP_REG_SP + && effective_address_bits != 16) + { + has_sib_byte = 1; + break; + } + /* fall through */ + case 1: + case 2: + x->regs[1] |= modrm.rm; + x->flags |= X86_INSN_HAS_BASE; + if (modrm.mode != 0) + { + log2_disp_bytes = (modrm.mode == 1 + ? 0 + : x->log2_effective_address_bytes); + if (log2_disp_bytes > 2) + log2_disp_bytes = 2; + } + break; + } + + if (has_sib_byte) + { + x86_insn_sib_byte_t sib; + + if (code >= code_end) + return 0; + sib.byte = *code++; + + x->log2_index_scale = 1 << sib.log2_scale; + x->regs[1] |= sib.base; + x->flags |= X86_INSN_HAS_BASE; + + if (sib.index != X86_INSN_GP_REG_SP) + { + x->regs[2] |= sib.index; + x->flags |= X86_INSN_HAS_INDEX; + } + } + } + else + { + /* effective_address_bits == 16 */ + switch (modrm.mode) + { + case 0: + if (modrm.rm == 6) + { + /* [disp16] */ + log2_disp_bytes = 1; + break; + } + /* fall through */ + case 1: + case 2: + switch (modrm.rm) + { + case 0: /* [bx + si/di] */ + case 1: + x->regs[1] = X86_INSN_GP_REG_BX; + x->regs[2] = X86_INSN_GP_REG_SI + (modrm.rm & 1); + x->flags |= X86_INSN_HAS_BASE | X86_INSN_HAS_INDEX; + break; + + case 2: /* [bp + si/di] */ + case 3: + x->regs[1] = X86_INSN_GP_REG_BP; + x->regs[2] = X86_INSN_GP_REG_SI + (modrm.rm & 1); + x->flags |= X86_INSN_HAS_BASE | X86_INSN_HAS_INDEX; + break; + + case 4: /* [si/di] */ + case 5: + x->regs[1] = X86_INSN_GP_REG_SI + (modrm.rm & 1); + x->flags |= X86_INSN_HAS_BASE; + break; + + case 6: /* [bp + disp] */ + x->regs[1] = X86_INSN_GP_REG_BP; + x->flags |= X86_INSN_HAS_BASE; + break; + + case 7: /* [bx + disp] */ + x->regs[1] = X86_INSN_GP_REG_BX; + x->flags |= X86_INSN_HAS_BASE; + break; + } + + if (modrm.mode != 0) + log2_disp_bytes = modrm.mode == 1 ? 0 : 1; + break; + } + } + + if (log2_disp_bytes != ~0) + { + i64 disp; + code = x86_insn_parse_number (log2_disp_bytes, code, code_end, + &disp); + if (code) + x->displacement = disp; + } + } + + return code; +} + +u8 * x86_insn_parse (x86_insn_parse_t * p, u8 * code_start) +{ + u8 i, * code, * code_end; + x86_insn_t * insn, * group_insn; + u8 default_operand_bits, effective_operand_bits; + u32 opcode, parse_flags; + + /* Preserve global parse flags. */ + parse_flags = p->flags & (X86_INSN_PARSE_32_BIT | X86_INSN_PARSE_64_BIT); + memset (p, 0, sizeof (p[0])); + p->flags = parse_flags; + + /* 64 implies 32 bit parsing. */ + if (parse_flags & X86_INSN_PARSE_64_BIT) + parse_flags |= X86_INSN_PARSE_32_BIT; + + /* Instruction must be <= 15 bytes. */ + code = code_start; + code_end = code + 15; + + /* Parse legacy prefixes. */ + while (1) + { + if (code >= code_end) + goto insn_too_long; + i = code[0]; + code++; + switch (i) + { + default: goto prefix_done; + + /* Set flags based on prefix. */ +#define _(x,o) case o: p->flags |= X86_INSN_##x; break; + foreach_x86_legacy_prefix; +#undef _ + } + } + prefix_done: + + /* REX prefix. */ + if ((parse_flags & X86_INSN_PARSE_64_BIT) && i >= 0x40 && i <= 0x4f) + { + p->regs[0] |= ((i & (1 << 2)) != 0) << 3; /* r bit */ + p->regs[1] |= ((i & (1 << 0)) != 0) << 3; /* b bit */ + p->regs[2] |= ((i & (1 << 1)) != 0) << 3; /* x bit */ + p->flags |= ((i & (1 << 3)) /* w bit */ + ? X86_INSN_OPERAND_SIZE_64 : 0); + if (code >= code_end) + goto insn_too_long; + i = *code++; + } + + opcode = i; + if (opcode == 0x0f) + { + /* two byte opcode. */; + if (code >= code_end) + goto insn_too_long; + i = *code++; + opcode = (opcode << 8) | i; + insn = x86_insns_two_byte + i; + } + else + { + static x86_insn_t arpl = { + .name = "arpl", + .operands[0].data = "Ew", + .operands[1].data = "Gw", + }; + + if (PREDICT_FALSE (i == 0x63 + && ! (parse_flags & X86_INSN_PARSE_64_BIT))) + insn = &arpl; + else + insn = x86_insns_one_byte + i; + } + + if ((i = X86_INSN_FLAG_GET_SSE_GROUP (insn->flags)) != 0) + { + x86_insn_group8_t * g8; + + if (p->flags & X86_INSN_OPERAND_SIZE) + g8 = x86_insn_sse_groups_operand_size; + else if (p->flags & X86_INSN_REPZ) + g8 = x86_insn_sse_groups_repz; + else if (p->flags & X86_INSN_REPNZ) + g8 = x86_insn_sse_groups_repnz; + else + g8 = 0; + + /* insn flags have 1 + group so != 0 test above can work. */ + ASSERT ((i - 1) < ARRAY_LEN (x86_insn_sse_groups_operand_size)); + if (g8) + insn = g8[i - 1].insns + (opcode & 7); + } + + /* Parse modrm and displacement if present. */ + if (x86_insn_has_modrm_byte (insn)) + { + x86_insn_modrm_byte_t modrm; + + if (code >= code_end) + goto insn_too_long; + modrm.byte = *code++; + + /* Handle special 0x0f01 and 0x0fae encodings. */ + if (PREDICT_FALSE (modrm.mode == 3 + && (opcode == 0x0f01 + || opcode == 0x0fae))) + { + static x86_insn_t x86_insns_0f01_special[] = { + _0 (swapgs), _0 (rdtscp), _0 (bad), _0 (bad), + _0 (bad), _0 (bad), _0 (bad), _0 (bad), + }; + static x86_insn_t x86_insns_0fae_special[] = { + _0 (vmrun), _0 (vmmcall), _0 (vmload), _0 (vmsave), + _0 (stgi), _0 (clgi), _0 (skinit), _0 (invlpga), + }; + + if (opcode == 0x0f01) + insn = x86_insns_0f01_special; + else + insn = x86_insns_0fae_special; + insn += modrm.rm; + opcode = (opcode << 8) | modrm.byte; + } + else + { + code = x86_insn_parse_modrm_byte (p, modrm, parse_flags, + code, code_end); + if (! code) + goto insn_too_long; + } + } + + group_insn = 0; + if ((i = X86_INSN_FLAG_GET_MODRM_REG_GROUP (insn->flags)) != 0) + { + u32 g = i - 1; + ASSERT (g < ARRAY_LEN (x86_insn_modrm_reg_groups)); + group_insn = x86_insn_modrm_reg_groups[g].insns + (p->regs[0] & 7); + } + + p->insn = insn[0]; + if (group_insn) + { + u32 k; + p->insn.name = group_insn->name; + p->insn.flags |= group_insn->flags; + for (k = 0; k < ARRAY_LEN (group_insn->operands); k++) + if (x86_insn_operand_is_valid (group_insn, k)) + p->insn.operands[k] = group_insn->operands[k]; + } + + default_operand_bits + = ((((parse_flags & X86_INSN_PARSE_32_BIT) != 0) + ^ ((p->flags & X86_INSN_OPERAND_SIZE) != 0)) + ? BITS (u32) : BITS (u16)); + + if ((parse_flags & X86_INSN_PARSE_64_BIT) + && (p->insn.flags & X86_INSN_FLAG_DEFAULT_64_BIT)) + default_operand_bits = BITS (u64); + + effective_operand_bits = default_operand_bits; + if (p->flags & X86_INSN_OPERAND_SIZE_64) + effective_operand_bits = BITS (u64); + + p->log2_effective_operand_bytes = 1; + p->log2_effective_operand_bytes += effective_operand_bits > 16; + p->log2_effective_operand_bytes += effective_operand_bits > 32; + + /* Parse immediate if present. */ + { + u32 l = x86_insn_log2_immediate_bytes (p, insn); + if (l <= 3) + { + code = x86_insn_parse_number (l, code, code_end, &p->immediate); + if (! code) + goto insn_too_long; + } + } + + return code; + + insn_too_long: + return 0; +} + +static u8 * format_x86_gp_reg_operand (u8 * s, va_list * va) +{ + u32 r = va_arg (*va, u32); + u32 log2_n_bytes = va_arg (*va, u32); + + const char names8[8] = "acdbsbsd"; + const char names16[8] = "xxxxppii"; + + ASSERT (r < 16); + + /* Add % register prefix. */ + vec_add1 (s, '%'); + + switch (log2_n_bytes) + { + case 0: + { + + if (r < 8) + s = format (s, "%c%c", names8[r & 3], (r >> 2) ? 'l' : 'h'); + else + s = format (s, "r%db", r); + } + break; + + case 2: + case 3: + s = format (s, "%c", log2_n_bytes == 2 ? 'e' : 'r'); + /* fall through */ + case 1: + if (r < 8) + s = format (s, "%c%c", names8[r], names16[r]); + else + { + s = format (s, "%d", r); + if (log2_n_bytes != 3) + s = format (s, "%c", log2_n_bytes == 1 ? 'w' : 'd'); + } + break; + + default: + ASSERT (0); + } + + return s; +} + +static u8 * format_x86_reg_operand (u8 * s, va_list * va) +{ + u32 reg = va_arg (*va, u32); + u32 log2_n_bytes = va_arg (*va, u32); + u32 type = va_arg (*va, u32); + + switch (type) + { + default: + ASSERT (0); + break; + + case 'x': + ASSERT (reg < 16); + return format (s, "%%xmm%d", reg); + + case 'm': + ASSERT (reg < 8); + return format (s, "%%mm%d", reg); + + /* Explicit byte/word/double-word/quad-word */ + case 'b': log2_n_bytes = 0; break; + case 'w': log2_n_bytes = 1; break; + case 'd': log2_n_bytes = 2; break; + case 'q': log2_n_bytes = 3; break; + + /* Use effective operand size. */ + case 'v': break; + + /* word or double-word depending on effective operand size. */ + case 'z': + log2_n_bytes = clib_min (log2_n_bytes, 2); + break; + } + + s = format (s, "%U", format_x86_gp_reg_operand, reg, log2_n_bytes); + return s; +} + +static u8 * format_x86_mem_operand (u8 * s, va_list * va) +{ + x86_insn_parse_t * p = va_arg (*va, x86_insn_parse_t *); + + if (p->displacement != 0) + s = format (s, "0x%x", p->displacement); + + if (p->flags & X86_INSN_HAS_BASE) + { + s = format (s, "(%U", + format_x86_gp_reg_operand, p->regs[1], + p->log2_effective_address_bytes); + if (p->flags & X86_INSN_HAS_INDEX) + { + s = format (s, ",%U", + format_x86_gp_reg_operand, p->regs[2], + p->log2_effective_address_bytes); + if (p->log2_index_scale != 0) + s = format (s, ",%d", 1 << p->log2_index_scale); + } + s = format (s, ")"); + } + + /* [RIP+disp] PC relative addressing in 64 bit mode. */ + else if (p->flags & X86_INSN_PARSE_64_BIT) + s = format (s, "(%%rip)"); + + return s; +} + +static u8 * format_x86_insn_operand (u8 * s, va_list * va) +{ + x86_insn_parse_t * p = va_arg (*va, x86_insn_parse_t *); + x86_insn_t * insn = &p->insn; + u32 o = va_arg (*va, u32); + u8 c, t; + + ASSERT (o < ARRAY_LEN (insn->operands)); + c = insn->operands[o].code; + t = insn->operands[o].type; + + /* Register encoded in instruction. */ + if (c < 8) + return format (s, "%U", + format_x86_gp_reg_operand, c, + p->log2_effective_operand_bytes); + + switch (c) + { + /* Memory or reg field from modrm byte. */ + case 'M': + ASSERT (p->flags & X86_INSN_IS_ADDRESS); + /* FALLTHROUGH */ + case 'E': + if (p->flags & X86_INSN_IS_ADDRESS) + s = format (s, "%U", format_x86_mem_operand, p); + else + s = format (s, "%U", + format_x86_reg_operand, p->regs[1], + p->log2_effective_operand_bytes, t); + break; + + /* reg field from modrm byte. */ + case 'R': + case 'G': + s = format (s, "%U", + format_x86_reg_operand, p->regs[0], + p->log2_effective_operand_bytes, t); + break; + + case 'I': + { + u32 l = x86_insn_log2_immediate_bytes (p, insn); + i64 mask = pow2_mask (8ULL << l); + s = format (s, "$0x%Lx", p->immediate & mask); + } + break; + + case 'J': + if (p->immediate < 0) + s = format (s, "- 0x%Lx", -p->immediate); + else + s = format (s, "+ 0x%Lx", p->immediate); + break; + + case 'O': + s = format (s, "0x%Lx", p->immediate); + break; + + case 'A': + /* AX/AL */ + s = format (s, "%U", + format_x86_gp_reg_operand, X86_INSN_GP_REG_AX, + t == 'L' ? 0 : p->log2_effective_operand_bytes); + break; + + case 'B': + /* BX/BL/BP */ + s = format (s, "%U", + format_x86_gp_reg_operand, + t == 'P' ? X86_INSN_GP_REG_BP : X86_INSN_GP_REG_BX, + t == 'L' ? 0 : p->log2_effective_operand_bytes); + break; + + case 'C': + /* CX/CL */ + s = format (s, "%U", + format_x86_gp_reg_operand, X86_INSN_GP_REG_CX, + t == 'L' ? 0 : p->log2_effective_operand_bytes); + break; + + case 'D': + /* DX/DL/DI */ + s = format (s, "%U", + format_x86_gp_reg_operand, + t == 'I' ? X86_INSN_GP_REG_DI : X86_INSN_GP_REG_DX, + t == 'L' ? 0 : p->log2_effective_operand_bytes); + break; + + case 'S': + /* SI/SP */ + s = format (s, "%U", + format_x86_gp_reg_operand, + t == 'I' ? X86_INSN_GP_REG_SI : X86_INSN_GP_REG_SP, + p->log2_effective_operand_bytes); + break; + + case '1': + s = format (s, "1"); + break; + + default: + ASSERT (0); + } + + return s; +} + +u8 * format_x86_insn_parse (u8 * s, va_list * va) +{ + x86_insn_parse_t * p = va_arg (*va, x86_insn_parse_t *); + x86_insn_t * insn = &p->insn; + u32 o, i, is_src_dst; + + s = format (s, "%s", insn->name); + + if (! x86_insn_operand_is_valid (insn, 0)) + goto done; + + is_src_dst = x86_insn_operand_is_valid (insn, 1); + + /* If instruction has immediate add suffix to opcode to + indicate operand size. */ + if (is_src_dst) + { + u32 b; + + b = x86_insn_log2_immediate_bytes (p, insn); + if (b < p->log2_effective_operand_bytes + && (p->flags & X86_INSN_IS_ADDRESS)) + s = format (s, "%c", "bwlq"[b]); + } + + for (i = 0; i < ARRAY_LEN (insn->operands); i++) + { + o = is_src_dst + i; + if (! x86_insn_operand_is_valid (insn, o)) + break; + s = format (s, "%s%U", + i == 0 ? " " : ", ", + format_x86_insn_operand, p, o); + } + + if (is_src_dst) + s = format (s, ", %U", + format_x86_insn_operand, p, 0); + + done: + return s; +} diff --git a/src/vppinfra/asm_x86.h b/src/vppinfra/asm_x86.h new file mode 100644 index 00000000..dacef617 --- /dev/null +++ b/src/vppinfra/asm_x86.h @@ -0,0 +1,125 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef included_asm_x86_h +#define included_asm_x86_h + +#include <vppinfra/format.h> + +typedef union +{ + struct + { + u8 code; + u8 type; + }; + u8 data[2]; +} x86_insn_operand_t; + +typedef struct +{ + /* Instruction name. */ + char *name; + + /* X86 instructions may have up to 3 operands. */ + x86_insn_operand_t operands[3]; + + u16 flags; +#define X86_INSN_FLAG_DEFAULT_64_BIT (1 << 0) +#define X86_INSN_FLAG_SET_SSE_GROUP(n) ((n) << 5) +#define X86_INSN_FLAG_GET_SSE_GROUP(f) (((f) >> 5) & 0x1f) +#define X86_INSN_FLAG_SET_MODRM_REG_GROUP(n) (((n) & 0x3f) << 10) +#define X86_INSN_FLAG_GET_MODRM_REG_GROUP(f) (((f) >> 10) & 0x3f) +} x86_insn_t; + +always_inline uword +x86_insn_operand_is_valid (x86_insn_t * i, uword o) +{ + ASSERT (o < ARRAY_LEN (i->operands)); + return i->operands[o].code != '_'; +} + +#define foreach_x86_legacy_prefix \ + _ (OPERAND_SIZE, 0x66) \ + _ (ADDRESS_SIZE, 0x67) \ + _ (SEGMENT_CS, 0x2e) \ + _ (SEGMENT_DS, 0x3e) \ + _ (SEGMENT_ES, 0x26) \ + _ (SEGMENT_FS, 0x64) \ + _ (SEGMENT_GS, 0x65) \ + _ (SEGMENT_SS, 0x36) \ + _ (LOCK, 0xf0) \ + _ (REPZ, 0xf3) \ + _ (REPNZ, 0xf2) + +#define foreach_x86_insn_parse_flag \ + /* Parse in 32/64-bit mode. */ \ + _ (PARSE_32_BIT, 0) \ + _ (PARSE_64_BIT, 0) \ + _ (IS_ADDRESS, 0) \ + /* regs[1/2] is a valid base/index register */ \ + _ (HAS_BASE, 0) \ + _ (HAS_INDEX, 0) \ + /* rex w bit */ \ + _ (OPERAND_SIZE_64, 0) + +typedef enum +{ +#define _(f,o) X86_INSN_FLAG_BIT_##f, + foreach_x86_insn_parse_flag foreach_x86_legacy_prefix +#undef _ +} x86_insn_parse_flag_bit_t; + +typedef enum +{ +#define _(f,o) X86_INSN_##f = 1 << X86_INSN_FLAG_BIT_##f, + foreach_x86_insn_parse_flag foreach_x86_legacy_prefix +#undef _ +} x86_insn_parse_flag_t; + +typedef struct +{ + /* Registers in instruction. + [0] is modrm reg field + [1] is base reg + [2] is index reg. */ + u8 regs[3]; + + /* Scale for index register. */ + u8 log2_index_scale:2; + u8 log2_effective_operand_bytes:3; + u8 log2_effective_address_bytes:3; + + i32 displacement; + + /* Parser flags: set of x86_insn_parse_flag_t enums. */ + u32 flags; + + i64 immediate; + + x86_insn_t insn; +} x86_insn_parse_t; + +u8 *x86_insn_parse (x86_insn_parse_t * p, u8 * code_start); +format_function_t format_x86_insn_parse; + +#endif /* included_asm_x86_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/backtrace.c b/src/vppinfra/backtrace.c new file mode 100644 index 00000000..bbfb792c --- /dev/null +++ b/src/vppinfra/backtrace.c @@ -0,0 +1,267 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2004 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/clib.h> +#include <vppinfra/error.h> + +#ifdef __mips__ + +/* Let code below know we've defined _clib_backtrace */ +#define clib_backtrace_defined + +#include <vppinfra/asm_mips.h> + +uword +clib_backtrace (uword * callers, uword max_callers, uword n_frames_to_skip) +{ + u32 *pc; + void *sp; + uword i, saved_pc; + + /* Figure current PC, saved PC and stack pointer. */ + asm volatile (".set push\n" + ".set noat\n" "move %[saved_pc], $31\n" "move %[sp], $29\n" + /* Fetches current PC. */ + "la $at, 1f\n" + "jalr %[pc], $at\n" + "nop\n" + "1:\n" + ".set pop\n":[pc] "=r" (pc), + [saved_pc] "=r" (saved_pc),[sp] "=r" (sp)); + + /* Also skip current frame. */ + n_frames_to_skip += 1; + + for (i = 0; i < max_callers + n_frames_to_skip; i++) + { + mips_insn_opcode_t op; + mips_insn_special_funct_t funct; + i32 insn, rs, rt, rd, immediate, found_saved_pc; + u32 *start_pc; + + /* Parse instructions until we reach prologue for this + stack frame. We'll need to figure out where saved + PC is and where previous stack frame lives. */ + start_pc = pc; + found_saved_pc = 0; + while (1) + { + insn = *--pc; + op = mips_insn_get_op (insn); + funct = mips_insn_get_funct (insn); + rs = mips_insn_get_rs (insn); + rt = mips_insn_get_rt (insn); + rd = mips_insn_get_rd (insn); + immediate = mips_insn_get_immediate (insn); + + switch (op) + { + default: + break; + + case MIPS_OPCODE_sd: + case MIPS_OPCODE_sw: + /* Trace stores of return address. */ + if (rt == MIPS_REG_RA) + { + void *addr = sp + immediate; + + /* If RA is stored somewhere other than in the + stack frame, give up. */ + if (rs != MIPS_REG_SP) + goto backtrace_done; + + ASSERT (immediate % 4 == 0); + if (op == MIPS_OPCODE_sw) + saved_pc = ((u32 *) addr)[0]; + else + saved_pc = ((u64 *) addr)[0]; + found_saved_pc = 1; + } + break; + + case MIPS_OPCODE_addiu: + case MIPS_OPCODE_daddiu: + case MIPS_OPCODE_addi: + case MIPS_OPCODE_daddi: + if (rt == MIPS_REG_SP) + { + if (rs != MIPS_REG_SP) + goto backtrace_done; + + ASSERT (immediate % 4 == 0); + + /* Assume positive offset is part of the epilogue. + E.g. + jr ra + add sp,sp,100 + */ + if (immediate > 0) + continue; + + /* Negative offset means allocate stack space. + This could either be the prologue or could be due to + alloca. */ + sp -= immediate; + + /* This frame will not save RA. */ + if (i == 0) + goto found_prologue; + + /* Assume that addiu sp,sp,-N without store of ra means + that we have not found the prologue yet. */ + if (found_saved_pc) + goto found_prologue; + } + break; + + case MIPS_OPCODE_slti: + case MIPS_OPCODE_sltiu: + case MIPS_OPCODE_andi: + case MIPS_OPCODE_ori: + case MIPS_OPCODE_xori: + case MIPS_OPCODE_lui: + case MIPS_OPCODE_ldl: + case MIPS_OPCODE_ldr: + case MIPS_OPCODE_lb: + case MIPS_OPCODE_lh: + case MIPS_OPCODE_lwl: + case MIPS_OPCODE_lw: + case MIPS_OPCODE_lbu: + case MIPS_OPCODE_lhu: + case MIPS_OPCODE_lwr: + case MIPS_OPCODE_lwu: + case MIPS_OPCODE_ld: + /* Give up when we find anyone setting the stack pointer. */ + if (rt == MIPS_REG_SP) + goto backtrace_done; + break; + + case MIPS_OPCODE_SPECIAL: + if (rd == MIPS_REG_SP) + switch (funct) + { + default: + /* Give up when we find anyone setting the stack pointer. */ + goto backtrace_done; + + case MIPS_SPECIAL_FUNCT_break: + case MIPS_SPECIAL_FUNCT_jr: + case MIPS_SPECIAL_FUNCT_sync: + case MIPS_SPECIAL_FUNCT_syscall: + case MIPS_SPECIAL_FUNCT_tge: + case MIPS_SPECIAL_FUNCT_tgeu: + case MIPS_SPECIAL_FUNCT_tlt: + case MIPS_SPECIAL_FUNCT_tltu: + case MIPS_SPECIAL_FUNCT_teq: + case MIPS_SPECIAL_FUNCT_tne: + /* These instructions can validly have rd == MIPS_REG_SP */ + break; + } + break; + } + } + + found_prologue: + /* Check sanity of saved pc. */ + if (saved_pc & 3) + goto backtrace_done; + if (saved_pc == 0) + goto backtrace_done; + + if (i >= n_frames_to_skip) + callers[i - n_frames_to_skip] = saved_pc; + pc = uword_to_pointer (saved_pc, u32 *); + } + +backtrace_done: + if (i < n_frames_to_skip) + return 0; + else + return i - n_frames_to_skip; +} +#endif /* __mips__ */ + +#ifndef clib_backtrace_defined +#define clib_backtrace_defined + +typedef struct clib_generic_stack_frame_t +{ + struct clib_generic_stack_frame_t *prev; + void *return_address; +} clib_generic_stack_frame_t; + +/* This will only work if we have a frame pointer. + Without a frame pointer we have to parse the machine code to + parse the stack frames. */ +uword +clib_backtrace (uword * callers, uword max_callers, uword n_frames_to_skip) +{ + clib_generic_stack_frame_t *f; + uword i; + + f = __builtin_frame_address (0); + + /* Also skip current frame. */ + n_frames_to_skip += 1; + + for (i = 0; i < max_callers + n_frames_to_skip; i++) + { + f = f->prev; + if (!f) + goto backtrace_done; + if (clib_abs ((void *) f - (void *) f->prev) > (64 * 1024)) + goto backtrace_done; + if (i >= n_frames_to_skip) + callers[i - n_frames_to_skip] = pointer_to_uword (f->return_address); + } + +backtrace_done: + if (i < n_frames_to_skip) + return 0; + else + return i - n_frames_to_skip; +} +#endif /* clib_backtrace_defined */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/bihash_16_8.h b/src/vppinfra/bihash_16_8.h new file mode 100644 index 00000000..361665be --- /dev/null +++ b/src/vppinfra/bihash_16_8.h @@ -0,0 +1,84 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#undef BIHASH_TYPE +#undef BIHASH_KVP_CACHE_SIZE +#undef BIHASH_KVP_PER_PAGE + +#define BIHASH_TYPE _16_8 +#define BIHASH_KVP_PER_PAGE 4 +#define BIHASH_KVP_CACHE_SIZE 5 + +#ifndef __included_bihash_16_8_h__ +#define __included_bihash_16_8_h__ + +#include <vppinfra/heap.h> +#include <vppinfra/format.h> +#include <vppinfra/pool.h> +#include <vppinfra/xxhash.h> +#include <vppinfra/crc32.h> + +typedef struct +{ + u64 key[2]; + u64 value; +} clib_bihash_kv_16_8_t; + +static inline int +clib_bihash_is_free_16_8 (clib_bihash_kv_16_8_t * v) +{ + /* Free values are memset to 0xff, check a bit... */ + if (v->key[0] == ~0ULL && v->value == ~0ULL) + return 1; + return 0; +} + +static inline u64 +clib_bihash_hash_16_8 (clib_bihash_kv_16_8_t * v) +{ +#ifdef clib_crc32c_uses_intrinsics + return clib_crc32c ((u8 *) v->key, 16); +#else + u64 tmp = v->key[0] ^ v->key[1]; + return clib_xxhash (tmp); +#endif +} + +static inline u8 * +format_bihash_kvp_16_8 (u8 * s, va_list * args) +{ + clib_bihash_kv_16_8_t *v = va_arg (*args, clib_bihash_kv_16_8_t *); + + s = format (s, "key %llu %llu value %llu", v->key[0], v->key[1], v->value); + return s; +} + +static inline int +clib_bihash_key_compare_16_8 (u64 * a, u64 * b) +{ + return ((a[0] ^ b[0]) | (a[1] ^ b[1])) == 0; +} + +#undef __included_bihash_template_h__ +#include <vppinfra/bihash_template.h> + +#endif /* __included_bihash_16_8_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/bihash_24_8.h b/src/vppinfra/bihash_24_8.h new file mode 100644 index 00000000..173168fe --- /dev/null +++ b/src/vppinfra/bihash_24_8.h @@ -0,0 +1,85 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#undef BIHASH_TYPE +#undef BIHASH_KVP_CACHE_SIZE +#undef BIHASH_KVP_PER_PAGE + +#define BIHASH_TYPE _24_8 +#define BIHASH_KVP_PER_PAGE 4 +#define BIHASH_KVP_CACHE_SIZE 0 + +#ifndef __included_bihash_24_8_h__ +#define __included_bihash_24_8_h__ + +#include <vppinfra/crc32.h> +#include <vppinfra/heap.h> +#include <vppinfra/format.h> +#include <vppinfra/pool.h> +#include <vppinfra/xxhash.h> + +typedef struct +{ + u64 key[3]; + u64 value; +} clib_bihash_kv_24_8_t; + +static inline int +clib_bihash_is_free_24_8 (const clib_bihash_kv_24_8_t * v) +{ + /* Free values are memset to 0xff, check a bit... */ + if (v->key[0] == ~0ULL && v->value == ~0ULL) + return 1; + return 0; +} + +static inline u64 +clib_bihash_hash_24_8 (const clib_bihash_kv_24_8_t * v) +{ +#ifdef clib_crc32c_uses_intrinsics + return clib_crc32c ((u8 *) v->key, 24); +#else + u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2]; + return clib_xxhash (tmp); +#endif +} + +static inline u8 * +format_bihash_kvp_24_8 (u8 * s, va_list * args) +{ + clib_bihash_kv_24_8_t *v = va_arg (*args, clib_bihash_kv_24_8_t *); + + s = format (s, "key %llu %llu %llu value %llu", + v->key[0], v->key[1], v->key[2], v->value); + return s; +} + +static inline int +clib_bihash_key_compare_24_8 (const u64 * a, const u64 * b) +{ + return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2])) == 0; +} + +#undef __included_bihash_template_h__ +#include <vppinfra/bihash_template.h> + +#endif /* __included_bihash_24_8_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/bihash_40_8.h b/src/vppinfra/bihash_40_8.h new file mode 100644 index 00000000..974a78d8 --- /dev/null +++ b/src/vppinfra/bihash_40_8.h @@ -0,0 +1,87 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#undef BIHASH_TYPE +#undef BIHASH_KVP_CACHE_SIZE +#undef BIHASH_KVP_PER_PAGE + +#define BIHASH_TYPE _40_8 +#define BIHASH_KVP_PER_PAGE 4 +#define BIHASH_KVP_CACHE_SIZE 2 + +#ifndef __included_bihash_40_8_h__ +#define __included_bihash_40_8_h__ + +#include <vppinfra/crc32.h> +#include <vppinfra/heap.h> +#include <vppinfra/format.h> +#include <vppinfra/pool.h> +#include <vppinfra/xxhash.h> + +typedef struct +{ + u64 key[5]; + u64 value; +} clib_bihash_kv_40_8_t; + +static inline int +clib_bihash_is_free_40_8 (const clib_bihash_kv_40_8_t * v) +{ + /* Free values are memset to 0xff, check a bit... */ + if (v->key[0] == ~0ULL && v->value == ~0ULL) + return 1; + return 0; +} + +static inline u64 +clib_bihash_hash_40_8 (const clib_bihash_kv_40_8_t * v) +{ +#ifdef clib_crc32c_uses_intrinsics + return clib_crc32c ((u8 *) v->key, 40); +#else + u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2] ^ v->key[3] ^ v->key[4]; + return clib_xxhash (tmp); +#endif +} + +static inline u8 * +format_bihash_kvp_40_8 (u8 * s, va_list * args) +{ + clib_bihash_kv_40_8_t *v = va_arg (*args, clib_bihash_kv_40_8_t *); + + s = format (s, "key %llu %llu %llu %llu %llu value %llu", v->key[0], + v->key[1], v->key[2], v->key[3], v->key[4], v->value); + return s; +} + +static inline int +clib_bihash_key_compare_40_8 (const u64 * a, const u64 * b) +{ + return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]) | (a[3] ^ b[3]) + | (a[4] ^ b[4])) == 0; +} + +#undef __included_bihash_template_h__ +#include <vppinfra/bihash_template.h> + +#endif /* __included_bihash_40_8_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/bihash_48_8.h b/src/vppinfra/bihash_48_8.h new file mode 100644 index 00000000..107bcace --- /dev/null +++ b/src/vppinfra/bihash_48_8.h @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#undef BIHASH_TYPE +#undef BIHASH_KVP_CACHE_SIZE +#undef BIHASH_KVP_PER_PAGE + +#define BIHASH_TYPE _48_8 +#define BIHASH_KVP_PER_PAGE 4 +#define BIHASH_KVP_CACHE_SIZE 2 + +#ifndef __included_bihash_48_8_h__ +#define __included_bihash_48_8_h__ + +#include <vppinfra/crc32.h> +#include <vppinfra/heap.h> +#include <vppinfra/format.h> +#include <vppinfra/pool.h> +#include <vppinfra/xxhash.h> + +typedef struct +{ + u64 key[6]; + u64 value; +} clib_bihash_kv_48_8_t; + +static inline int +clib_bihash_is_free_48_8 (const clib_bihash_kv_48_8_t * v) +{ + /* Free values are memset to 0xff, check a bit... */ + if (v->key[0] == ~0ULL && v->value == ~0ULL) + return 1; + return 0; +} + +static inline u64 +clib_bihash_hash_48_8 (const clib_bihash_kv_48_8_t * v) +{ +#ifdef clib_crc32c_uses_intrinsics + return clib_crc32c ((u8 *) v->key, 48); +#else + u64 tmp = v->key[0] ^ v->key[1] ^ v->key[2] ^ v->key[3] ^ v->key[4] + ^ v->key[5]; + return clib_xxhash (tmp); +#endif +} + +static inline u8 * +format_bihash_kvp_48_8 (u8 * s, va_list * args) +{ + clib_bihash_kv_48_8_t *v = va_arg (*args, clib_bihash_kv_48_8_t *); + + s = format (s, "key %llu %llu %llu %llu %llu %llu value %llu", v->key[0], + v->key[1], v->key[2], v->key[3], v->key[4], v->key[5], + v->value); + return s; +} + +static inline int +clib_bihash_key_compare_48_8 (const u64 * a, const u64 * b) +{ + return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]) | (a[3] ^ b[3]) + | (a[4] ^ b[4]) | (a[5] ^ b[5])) == 0; +} + +#undef __included_bihash_template_h__ +#include <vppinfra/bihash_template.h> + +#endif /* __included_bihash_48_8_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/bihash_8_8.h b/src/vppinfra/bihash_8_8.h new file mode 100644 index 00000000..2deb64ef --- /dev/null +++ b/src/vppinfra/bihash_8_8.h @@ -0,0 +1,99 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#undef BIHASH_TYPE +#undef BIHASH_KVP_CACHE_SIZE +#undef BIHASH_KVP_PER_PAGE + +#define BIHASH_TYPE _8_8 +#define BIHASH_KVP_PER_PAGE 4 +#define BIHASH_KVP_CACHE_SIZE 0 + +#ifndef __included_bihash_8_8_h__ +#define __included_bihash_8_8_h__ + +#include <vppinfra/heap.h> +#include <vppinfra/format.h> +#include <vppinfra/pool.h> +#include <vppinfra/xxhash.h> +#include <vppinfra/crc32.h> + +/** 8 octet key, 8 octet key value pair */ +typedef struct +{ + u64 key; /**< the key */ + u64 value; /**< the value */ +} clib_bihash_kv_8_8_t; + +/** Decide if a clib_bihash_kv_8_8_t instance is free + @param v- pointer to the (key,value) pair +*/ +static inline int +clib_bihash_is_free_8_8 (clib_bihash_kv_8_8_t * v) +{ + if (v->key == ~0ULL && v->value == ~0ULL) + return 1; + return 0; +} + +/** Hash a clib_bihash_kv_8_8_t instance + @param v - pointer to the (key,value) pair, hash the key (only) +*/ +static inline u64 +clib_bihash_hash_8_8 (clib_bihash_kv_8_8_t * v) +{ + /* Note: to torture-test linear scan, make this fn return a constant */ +#ifdef clib_crc32c_uses_intrinsics + return clib_crc32c ((u8 *) & v->key, 8); +#else + return clib_xxhash (v->key); +#endif +} + +/** Format a clib_bihash_kv_8_8_t instance + @param s - u8 * vector under construction + @param args (vararg) - the (key,value) pair to format + @return s - the u8 * vector under construction +*/ +static inline u8 * +format_bihash_kvp_8_8 (u8 * s, va_list * args) +{ + clib_bihash_kv_8_8_t *v = va_arg (*args, clib_bihash_kv_8_8_t *); + + s = format (s, "key %llu value %llu", v->key, v->value); + return s; +} + +/** Compare two clib_bihash_kv_8_8_t instances + @param a - first key + @param b - second key +*/ +static inline int +clib_bihash_key_compare_8_8 (u64 a, u64 b) +{ + return a == b; +} + +#undef __included_bihash_template_h__ +#include <vppinfra/bihash_template.h> + +#endif /* __included_bihash_8_8_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/bihash_doc.h b/src/vppinfra/bihash_doc.h new file mode 100644 index 00000000..e6ab9db6 --- /dev/null +++ b/src/vppinfra/bihash_doc.h @@ -0,0 +1,149 @@ +/* + * Copyright (c) 2014 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#error do not #include this file! + +/** \file + + Bounded-index extensible hashing. The basic algorithm performs + thread-safe constant-time lookups in the face of a rational number + of hash collisions. The computed hash code h(k) must have + reasonable statistics with respect to the key space. It won't do + to have h(k) = 0 or 1, for all values of k. + + Each bucket in the power-of-two bucket array contains the index + (in a private vppinfra memory heap) of the "backing store" for the + bucket, as well as a size field. The size field (log2_pages) + corresponds to 1, 2, 4, ... contiguous "pages" containing the + (key,value) pairs in the bucket. + + When a single page fills, we allocate two contiguous pages. We + recompute h(k) for each (key,value) pair, using an additional bit + to deal the (key, value) pairs into the "top" and "bottom" pages. + + At lookup time, we compute h(k), using lg(bucket-array-size) to + pick the bucket. We read the bucket to find the base of the + backing pages. We use an additional log2_pages' worth of bits + from h(k) to compute the offset of the page which will contain the + (key,value) pair we're trying to find. +*/ + +/** template key/value backing page structure */ +typedef struct clib_bihash_value +{ + union + { + + clib_bihash_kv kvp[BIHASH_KVP_PER_PAGE]; /**< the actual key/value pairs */ + clib_bihash_value *next_free; /**< used when a KVP page (or block thereof) is on a freelist */ + }; +} clib_bihash_value_t +/** bihash bucket structure */ + typedef struct +{ + union + { + struct + { + u32 offset; /**< backing page offset in the clib memory heap */ + u8 pad[3]; /**< log2 (size of the packing page block) */ + u8 log2_pages; + }; + u64 as_u64; + }; +} clib_bihash_bucket_t; + +/** A bounded index extensible hash table */ +typedef struct +{ + clib_bihash_bucket_t *buckets; /**< Hash bucket vector, power-of-two in size */ + volatile u32 *writer_lock; /**< Writer lock, in its own cache line */ + BVT (clib_bihash_value) ** working_copies; + /**< Working copies (various sizes), to avoid locking against readers */ + clib_bihash_bucket_t saved_bucket; /**< Saved bucket pointer */ + u32 nbuckets; /**< Number of hash buckets */ + u32 log2_nbuckets; /**< lg(nbuckets) */ + u8 *name; /**< hash table name */ + BVT (clib_bihash_value) ** freelists; + /**< power of two freelist vector */ + void *mheap; /**< clib memory heap */ +} clib_bihash_t; + +/** Get pointer to value page given its clib mheap offset */ +static inline void *clib_bihash_get_value (clib_bihash * h, uword offset); + +/** Get clib mheap offset given a pointer */ +static inline uword clib_bihash_get_offset (clib_bihash * h, void *v); + +/** initialize a bounded index extensible hash table + + @param h - the bi-hash table to initialize + @param name - name of the hash table + @param nbuckets - the number of buckets, will be rounded up to +a power of two + @param memory_size - clib mheap size, in bytes +*/ + +void clib_bihash_init + (clib_bihash * h, char *name, u32 nbuckets, uword memory_size); + +/** Destroy a bounded index extensible hash table + @param h - the bi-hash table to free +*/ + +void clib_bihash_free (clib_bihash * h); + +/** Add or delete a (key,value) pair from a bi-hash table + + @param h - the bi-hash table to search + @param add_v - the (key,value) pair to add + @param is_add - add=1, delete=0 + @returns 0 on success, < 0 on error + @note This function will replace an existing (key,value) pair if the + new key matches an existing key +*/ +int clib_bihash_add_del (clib_bihash * h, clib_bihash_kv * add_v, int is_add); + + +/** Search a bi-hash table + + @param h - the bi-hash table to search + @param search_v - (key,value) pair containing the search key + @param return_v - (key,value) pair which matches search_v.key + @returns 0 on success (with return_v set), < 0 on error +*/ +int clib_bihash_search (clib_bihash * h, + clib_bihash_kv * search_v, clib_bihash_kv * return_v); + + +/** Visit active (key,value) pairs in a bi-hash table + + @param h - the bi-hash table to search + @param callback - function to call with each active (key,value) pair + @param arg - arbitrary second argument passed to the callback function + First argument is the (key,value) pair to visit + @note Trying to supply a proper function prototype for the + callback function appears to be a fool's errand. +*/ +void clib_bihash_foreach_key_value_pair (clib_bihash * h, + void *callback, void *arg); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/bihash_template.c b/src/vppinfra/bihash_template.c new file mode 100644 index 00000000..56c410b5 --- /dev/null +++ b/src/vppinfra/bihash_template.c @@ -0,0 +1,624 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/** @cond DOCUMENTATION_IS_IN_BIHASH_DOC_H */ + +void BV (clib_bihash_init) + (BVT (clib_bihash) * h, char *name, u32 nbuckets, uword memory_size) +{ + void *oldheap; + int i; + + nbuckets = 1 << (max_log2 (nbuckets)); + + h->name = (u8 *) name; + h->nbuckets = nbuckets; + h->log2_nbuckets = max_log2 (nbuckets); + h->cache_hits = 0; + h->cache_misses = 0; + + h->mheap = mheap_alloc (0 /* use VM */ , memory_size); + + oldheap = clib_mem_set_heap (h->mheap); + vec_validate_aligned (h->buckets, nbuckets - 1, CLIB_CACHE_LINE_BYTES); + h->writer_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, + CLIB_CACHE_LINE_BYTES); + h->writer_lock[0] = 0; + + for (i = 0; i < nbuckets; i++) + BV (clib_bihash_reset_cache) (h->buckets + i); + + clib_mem_set_heap (oldheap); +} + +void BV (clib_bihash_free) (BVT (clib_bihash) * h) +{ + mheap_free (h->mheap); + memset (h, 0, sizeof (*h)); +} + +static +BVT (clib_bihash_value) * +BV (value_alloc) (BVT (clib_bihash) * h, u32 log2_pages) +{ + BVT (clib_bihash_value) * rv = 0; + void *oldheap; + + ASSERT (h->writer_lock[0]); + if (log2_pages >= vec_len (h->freelists) || h->freelists[log2_pages] == 0) + { + oldheap = clib_mem_set_heap (h->mheap); + + vec_validate (h->freelists, log2_pages); + rv = clib_mem_alloc_aligned ((sizeof (*rv) * (1 << log2_pages)), + CLIB_CACHE_LINE_BYTES); + clib_mem_set_heap (oldheap); + goto initialize; + } + rv = h->freelists[log2_pages]; + h->freelists[log2_pages] = rv->next_free; + +initialize: + ASSERT (rv); + /* + * Latest gcc complains that the length arg is zero + * if we replace (1<<log2_pages) with vec_len(rv). + * No clue. + */ + memset (rv, 0xff, sizeof (*rv) * (1 << log2_pages)); + return rv; +} + +static void +BV (value_free) (BVT (clib_bihash) * h, BVT (clib_bihash_value) * v, + u32 log2_pages) +{ + ASSERT (h->writer_lock[0]); + + ASSERT (vec_len (h->freelists) > log2_pages); + + v->next_free = h->freelists[log2_pages]; + h->freelists[log2_pages] = v; +} + +static inline void +BV (make_working_copy) (BVT (clib_bihash) * h, BVT (clib_bihash_bucket) * b) +{ + BVT (clib_bihash_value) * v; + BVT (clib_bihash_bucket) working_bucket __attribute__ ((aligned (8))); + void *oldheap; + BVT (clib_bihash_value) * working_copy; + u32 thread_index = os_get_thread_index (); + int log2_working_copy_length; + + if (thread_index >= vec_len (h->working_copies)) + { + oldheap = clib_mem_set_heap (h->mheap); + vec_validate (h->working_copies, thread_index); + vec_validate_init_empty (h->working_copy_lengths, thread_index, ~0); + clib_mem_set_heap (oldheap); + } + + /* + * working_copies are per-cpu so that near-simultaneous + * updates from multiple threads will not result in sporadic, spurious + * lookup failures. + */ + working_copy = h->working_copies[thread_index]; + log2_working_copy_length = h->working_copy_lengths[thread_index]; + + h->saved_bucket.as_u64 = b->as_u64; + oldheap = clib_mem_set_heap (h->mheap); + + if (b->log2_pages > log2_working_copy_length) + { + if (working_copy) + clib_mem_free (working_copy); + + working_copy = clib_mem_alloc_aligned + (sizeof (working_copy[0]) * (1 << b->log2_pages), + CLIB_CACHE_LINE_BYTES); + h->working_copy_lengths[thread_index] = b->log2_pages; + h->working_copies[thread_index] = working_copy; + } + + clib_mem_set_heap (oldheap); + + /* Lock the bucket... */ + while (BV (clib_bihash_lock_bucket) (b) == 0) + ; + + v = BV (clib_bihash_get_value) (h, b->offset); + + clib_memcpy (working_copy, v, sizeof (*v) * (1 << b->log2_pages)); + working_bucket.as_u64 = b->as_u64; + working_bucket.offset = BV (clib_bihash_get_offset) (h, working_copy); + CLIB_MEMORY_BARRIER (); + b->as_u64 = working_bucket.as_u64; + h->working_copies[thread_index] = working_copy; +} + +static +BVT (clib_bihash_value) * +BV (split_and_rehash) + (BVT (clib_bihash) * h, + BVT (clib_bihash_value) * old_values, u32 old_log2_pages, + u32 new_log2_pages) +{ + BVT (clib_bihash_value) * new_values, *new_v; + int i, j, length_in_kvs; + + new_values = BV (value_alloc) (h, new_log2_pages); + length_in_kvs = (1 << old_log2_pages) * BIHASH_KVP_PER_PAGE; + + for (i = 0; i < length_in_kvs; i++) + { + u64 new_hash; + + /* Entry not in use? Forget it */ + if (BV (clib_bihash_is_free) (&(old_values->kvp[i]))) + continue; + + /* rehash the item onto its new home-page */ + new_hash = BV (clib_bihash_hash) (&(old_values->kvp[i])); + new_hash >>= h->log2_nbuckets; + new_hash &= (1 << new_log2_pages) - 1; + new_v = &new_values[new_hash]; + + /* Across the new home-page */ + for (j = 0; j < BIHASH_KVP_PER_PAGE; j++) + { + /* Empty slot */ + if (BV (clib_bihash_is_free) (&(new_v->kvp[j]))) + { + clib_memcpy (&(new_v->kvp[j]), &(old_values->kvp[i]), + sizeof (new_v->kvp[j])); + goto doublebreak; + } + } + /* Crap. Tell caller to try again */ + BV (value_free) (h, new_values, new_log2_pages); + return 0; + doublebreak:; + } + + return new_values; +} + +static +BVT (clib_bihash_value) * +BV (split_and_rehash_linear) + (BVT (clib_bihash) * h, + BVT (clib_bihash_value) * old_values, u32 old_log2_pages, + u32 new_log2_pages) +{ + BVT (clib_bihash_value) * new_values; + int i, j, new_length, old_length; + + new_values = BV (value_alloc) (h, new_log2_pages); + new_length = (1 << new_log2_pages) * BIHASH_KVP_PER_PAGE; + old_length = (1 << old_log2_pages) * BIHASH_KVP_PER_PAGE; + + j = 0; + /* Across the old value array */ + for (i = 0; i < old_length; i++) + { + /* Find a free slot in the new linear scan bucket */ + for (; j < new_length; j++) + { + /* Old value not in use? Forget it. */ + if (BV (clib_bihash_is_free) (&(old_values->kvp[i]))) + goto doublebreak; + + /* New value should never be in use */ + if (BV (clib_bihash_is_free) (&(new_values->kvp[j]))) + { + /* Copy the old value and move along */ + clib_memcpy (&(new_values->kvp[j]), &(old_values->kvp[i]), + sizeof (new_values->kvp[j])); + j++; + goto doublebreak; + } + } + /* This should never happen... */ + clib_warning ("BUG: linear rehash failed!"); + BV (value_free) (h, new_values, new_log2_pages); + return 0; + + doublebreak:; + } + return new_values; +} + +int BV (clib_bihash_add_del) + (BVT (clib_bihash) * h, BVT (clib_bihash_kv) * add_v, int is_add) +{ + u32 bucket_index; + BVT (clib_bihash_bucket) * b, tmp_b; + BVT (clib_bihash_value) * v, *new_v, *save_new_v, *working_copy; + int rv = 0; + int i, limit; + u64 hash, new_hash; + u32 new_log2_pages, old_log2_pages; + u32 thread_index = os_get_thread_index (); + int mark_bucket_linear; + int resplit_once; + + hash = BV (clib_bihash_hash) (add_v); + + bucket_index = hash & (h->nbuckets - 1); + b = &h->buckets[bucket_index]; + + hash >>= h->log2_nbuckets; + + tmp_b.linear_search = 0; + + while (__sync_lock_test_and_set (h->writer_lock, 1)) + ; + + /* First elt in the bucket? */ + if (b->offset == 0) + { + if (is_add == 0) + { + rv = -1; + goto unlock; + } + + v = BV (value_alloc) (h, 0); + + *v->kvp = *add_v; + tmp_b.as_u64 = 0; + tmp_b.offset = BV (clib_bihash_get_offset) (h, v); + + b->as_u64 = tmp_b.as_u64; + goto unlock; + } + + /* Note: this leaves the cache disabled */ + BV (make_working_copy) (h, b); + + v = BV (clib_bihash_get_value) (h, h->saved_bucket.offset); + + limit = BIHASH_KVP_PER_PAGE; + v += (b->linear_search == 0) ? hash & ((1 << b->log2_pages) - 1) : 0; + if (b->linear_search) + limit <<= b->log2_pages; + + if (is_add) + { + /* + * For obvious (in hindsight) reasons, see if we're supposed to + * replace an existing key, then look for an empty slot. + */ + for (i = 0; i < limit; i++) + { + if (!memcmp (&(v->kvp[i]), &add_v->key, sizeof (add_v->key))) + { + clib_memcpy (&(v->kvp[i]), add_v, sizeof (*add_v)); + CLIB_MEMORY_BARRIER (); + /* Restore the previous (k,v) pairs */ + b->as_u64 = h->saved_bucket.as_u64; + goto unlock; + } + } + for (i = 0; i < limit; i++) + { + if (BV (clib_bihash_is_free) (&(v->kvp[i]))) + { + clib_memcpy (&(v->kvp[i]), add_v, sizeof (*add_v)); + CLIB_MEMORY_BARRIER (); + b->as_u64 = h->saved_bucket.as_u64; + goto unlock; + } + } + /* no room at the inn... split case... */ + } + else + { + for (i = 0; i < limit; i++) + { + if (!memcmp (&(v->kvp[i]), &add_v->key, sizeof (add_v->key))) + { + memset (&(v->kvp[i]), 0xff, sizeof (*(add_v))); + CLIB_MEMORY_BARRIER (); + b->as_u64 = h->saved_bucket.as_u64; + goto unlock; + } + } + rv = -3; + b->as_u64 = h->saved_bucket.as_u64; + goto unlock; + } + + old_log2_pages = h->saved_bucket.log2_pages; + new_log2_pages = old_log2_pages + 1; + mark_bucket_linear = 0; + + working_copy = h->working_copies[thread_index]; + resplit_once = 0; + + new_v = BV (split_and_rehash) (h, working_copy, old_log2_pages, + new_log2_pages); + if (new_v == 0) + { + try_resplit: + resplit_once = 1; + new_log2_pages++; + /* Try re-splitting. If that fails, fall back to linear search */ + new_v = BV (split_and_rehash) (h, working_copy, old_log2_pages, + new_log2_pages); + if (new_v == 0) + { + mark_linear: + new_log2_pages--; + /* pinned collisions, use linear search */ + new_v = + BV (split_and_rehash_linear) (h, working_copy, old_log2_pages, + new_log2_pages); + mark_bucket_linear = 1; + } + } + + /* Try to add the new entry */ + save_new_v = new_v; + new_hash = BV (clib_bihash_hash) (add_v); + limit = BIHASH_KVP_PER_PAGE; + if (mark_bucket_linear) + limit <<= new_log2_pages; + new_hash >>= h->log2_nbuckets; + new_hash &= (1 << new_log2_pages) - 1; + new_v += mark_bucket_linear ? 0 : new_hash; + + for (i = 0; i < limit; i++) + { + if (BV (clib_bihash_is_free) (&(new_v->kvp[i]))) + { + clib_memcpy (&(new_v->kvp[i]), add_v, sizeof (*add_v)); + goto expand_ok; + } + } + + /* Crap. Try again */ + BV (value_free) (h, save_new_v, new_log2_pages); + /* + * If we've already doubled the size of the bucket once, + * fall back to linear search now. + */ + if (resplit_once) + goto mark_linear; + else + goto try_resplit; + +expand_ok: + /* Keep track of the number of linear-scan buckets */ + if (tmp_b.linear_search ^ mark_bucket_linear) + h->linear_buckets += (mark_bucket_linear == 1) ? 1 : -1; + + tmp_b.log2_pages = new_log2_pages; + tmp_b.offset = BV (clib_bihash_get_offset) (h, save_new_v); + tmp_b.linear_search = mark_bucket_linear; + + CLIB_MEMORY_BARRIER (); + b->as_u64 = tmp_b.as_u64; + v = BV (clib_bihash_get_value) (h, h->saved_bucket.offset); + BV (value_free) (h, v, old_log2_pages); + +unlock: + BV (clib_bihash_reset_cache) (b); + BV (clib_bihash_unlock_bucket) (b); + CLIB_MEMORY_BARRIER (); + h->writer_lock[0] = 0; + return rv; +} + +int BV (clib_bihash_search) + (BVT (clib_bihash) * h, + BVT (clib_bihash_kv) * search_key, BVT (clib_bihash_kv) * valuep) +{ + u64 hash; + u32 bucket_index; + BVT (clib_bihash_value) * v; +#if BIHASH_KVP_CACHE_SIZE > 0 + BVT (clib_bihash_kv) * kvp; +#endif + BVT (clib_bihash_bucket) * b; + int i, limit; + + ASSERT (valuep); + + hash = BV (clib_bihash_hash) (search_key); + + bucket_index = hash & (h->nbuckets - 1); + b = &h->buckets[bucket_index]; + + if (b->offset == 0) + return -1; + +#if BIHASH_KVP_CACHE_SIZE > 0 + /* Check the cache, if currently enabled */ + if (PREDICT_TRUE ((b->cache_lru & (1 << 15)) == 0)) + { + limit = BIHASH_KVP_CACHE_SIZE; + kvp = b->cache; + for (i = 0; i < limit; i++) + { + if (BV (clib_bihash_key_compare) (kvp[i].key, search_key->key)) + { + *valuep = kvp[i]; + h->cache_hits++; + return 0; + } + } + } +#endif + + hash >>= h->log2_nbuckets; + + v = BV (clib_bihash_get_value) (h, b->offset); + limit = BIHASH_KVP_PER_PAGE; + v += (b->linear_search == 0) ? hash & ((1 << b->log2_pages) - 1) : 0; + if (PREDICT_FALSE (b->linear_search)) + limit <<= b->log2_pages; + + for (i = 0; i < limit; i++) + { + if (BV (clib_bihash_key_compare) (v->kvp[i].key, search_key->key)) + { + *valuep = v->kvp[i]; + +#if BIHASH_KVP_CACHE_SIZE > 0 + u8 cache_slot; + /* Shut off the cache */ + if (BV (clib_bihash_lock_bucket) (b)) + { + cache_slot = BV (clib_bihash_get_lru) (b); + b->cache[cache_slot] = v->kvp[i]; + BV (clib_bihash_update_lru) (b, cache_slot); + + /* Reenable the cache */ + BV (clib_bihash_unlock_bucket) (b); + h->cache_misses++; + } +#endif + return 0; + } + } + return -1; +} + +u8 *BV (format_bihash_lru) (u8 * s, va_list * args) +{ +#if BIHASH_KVP_SIZE > 0 + int i; + BVT (clib_bihash_bucket) * b = va_arg (*args, BVT (clib_bihash_bucket) *); + u16 cache_lru = b->cache_lru; + + s = format (s, "cache %s, order ", cache_lru & (1 << 15) ? "on" : "off"); + + for (i = 0; i < BIHASH_KVP_CACHE_SIZE; i++) + s = format (s, "[%d] ", ((cache_lru >> (3 * i)) & 7)); + + return (s); +#else + return format (s, "cache not configured"); +#endif +} + +void +BV (clib_bihash_update_lru_not_inline) (BVT (clib_bihash_bucket) * b, u8 slot) +{ +#if BIHASH_KVP_SIZE > 0 + BV (clib_bihash_update_lru) (b, slot); +#endif +} + +u8 *BV (format_bihash) (u8 * s, va_list * args) +{ + BVT (clib_bihash) * h = va_arg (*args, BVT (clib_bihash) *); + int verbose = va_arg (*args, int); + BVT (clib_bihash_bucket) * b; + BVT (clib_bihash_value) * v; + int i, j, k; + u64 active_elements = 0; + + s = format (s, "Hash table %s\n", h->name ? h->name : (u8 *) "(unnamed)"); + + for (i = 0; i < h->nbuckets; i++) + { + b = &h->buckets[i]; + if (b->offset == 0) + { + if (verbose > 1) + s = format (s, "[%d]: empty\n", i); + continue; + } + + if (verbose) + { + s = format (s, "[%d]: heap offset %d, len %d, linear %d\n", i, + b->offset, (1 << b->log2_pages), b->linear_search); + } + + v = BV (clib_bihash_get_value) (h, b->offset); + for (j = 0; j < (1 << b->log2_pages); j++) + { + for (k = 0; k < BIHASH_KVP_PER_PAGE; k++) + { + if (BV (clib_bihash_is_free) (&v->kvp[k])) + { + if (verbose > 1) + s = format (s, " %d: empty\n", + j * BIHASH_KVP_PER_PAGE + k); + continue; + } + if (verbose) + { + s = format (s, " %d: %U\n", + j * BIHASH_KVP_PER_PAGE + k, + BV (format_bihash_kvp), &(v->kvp[k])); + } + active_elements++; + } + v++; + } + } + + s = format (s, " %lld active elements\n", active_elements); + s = format (s, " %d free lists\n", vec_len (h->freelists)); + s = format (s, " %d linear search buckets\n", h->linear_buckets); + s = format (s, " %lld cache hits, %lld cache misses\n", + h->cache_hits, h->cache_misses); + return s; +} + +void BV (clib_bihash_foreach_key_value_pair) + (BVT (clib_bihash) * h, void *callback, void *arg) +{ + int i, j, k; + BVT (clib_bihash_bucket) * b; + BVT (clib_bihash_value) * v; + void (*fp) (BVT (clib_bihash_kv) *, void *) = callback; + + for (i = 0; i < h->nbuckets; i++) + { + b = &h->buckets[i]; + if (b->offset == 0) + continue; + + v = BV (clib_bihash_get_value) (h, b->offset); + for (j = 0; j < (1 << b->log2_pages); j++) + { + for (k = 0; k < BIHASH_KVP_PER_PAGE; k++) + { + if (BV (clib_bihash_is_free) (&v->kvp[k])) + continue; + + (*fp) (&v->kvp[k], arg); + } + v++; + } + } +} + +/** @endcond */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/bihash_template.h b/src/vppinfra/bihash_template.h new file mode 100644 index 00000000..ea1b6f7b --- /dev/null +++ b/src/vppinfra/bihash_template.h @@ -0,0 +1,419 @@ +/* + Copyright (c) 2014 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +/** @cond DOCUMENTATION_IS_IN_BIHASH_DOC_H */ + +/* + * Note: to instantiate the template multiple times in a single file, + * #undef __included_bihash_template_h__... + */ +#ifndef __included_bihash_template_h__ +#define __included_bihash_template_h__ + +#include <vppinfra/heap.h> +#include <vppinfra/format.h> +#include <vppinfra/pool.h> + +#ifndef BIHASH_TYPE +#error BIHASH_TYPE not defined +#endif + +#define _bv(a,b) a##b +#define __bv(a,b) _bv(a,b) +#define BV(a) __bv(a,BIHASH_TYPE) + +#define _bvt(a,b) a##b##_t +#define __bvt(a,b) _bvt(a,b) +#define BVT(a) __bvt(a,BIHASH_TYPE) + +typedef struct BV (clib_bihash_value) +{ + union + { + BVT (clib_bihash_kv) kvp[BIHASH_KVP_PER_PAGE]; + struct BV (clib_bihash_value) * next_free; + }; +} BVT (clib_bihash_value); + +#if BIHASH_KVP_CACHE_SIZE > 5 +#error Requested KVP cache LRU data exceeds 16 bits +#endif + +typedef struct +{ + union + { + struct + { + u32 offset; + u8 linear_search; + u8 log2_pages; + u16 cache_lru; + }; + u64 as_u64; + }; +#if BIHASH_KVP_CACHE_SIZE > 0 + BVT (clib_bihash_kv) cache[BIHASH_KVP_CACHE_SIZE]; +#endif +} BVT (clib_bihash_bucket); + +typedef struct +{ + BVT (clib_bihash_value) * values; + BVT (clib_bihash_bucket) * buckets; + volatile u32 *writer_lock; + + BVT (clib_bihash_value) ** working_copies; + int *working_copy_lengths; + BVT (clib_bihash_bucket) saved_bucket; + + u32 nbuckets; + u32 log2_nbuckets; + u32 linear_buckets; + u8 *name; + + u64 cache_hits; + u64 cache_misses; + + BVT (clib_bihash_value) ** freelists; + void *mheap; + +} BVT (clib_bihash); + + +static inline void +BV (clib_bihash_update_lru) (BVT (clib_bihash_bucket) * b, u8 slot) +{ + u16 value, tmp, mask; + u8 found_lru_pos; + u16 save_hi; + + if (BIHASH_KVP_CACHE_SIZE < 2) + return; + + ASSERT (slot < BIHASH_KVP_CACHE_SIZE); + + /* First, find the slot in cache_lru */ + mask = slot; + if (BIHASH_KVP_CACHE_SIZE > 1) + mask |= slot << 3; + if (BIHASH_KVP_CACHE_SIZE > 2) + mask |= slot << 6; + if (BIHASH_KVP_CACHE_SIZE > 3) + mask |= slot << 9; + if (BIHASH_KVP_CACHE_SIZE > 4) + mask |= slot << 12; + + value = b->cache_lru; + tmp = value ^ mask; + + /* Already the most-recently used? */ + if ((tmp & 7) == 0) + return; + + found_lru_pos = ((tmp & (7 << 3)) == 0) ? 1 : 0; + if (BIHASH_KVP_CACHE_SIZE > 2) + found_lru_pos = ((tmp & (7 << 6)) == 0) ? 2 : found_lru_pos; + if (BIHASH_KVP_CACHE_SIZE > 3) + found_lru_pos = ((tmp & (7 << 9)) == 0) ? 3 : found_lru_pos; + if (BIHASH_KVP_CACHE_SIZE > 4) + found_lru_pos = ((tmp & (7 << 12)) == 0) ? 4 : found_lru_pos; + + ASSERT (found_lru_pos); + + /* create a mask to kill bits in or above slot */ + mask = 0xFFFF << found_lru_pos; + mask <<= found_lru_pos; + mask <<= found_lru_pos; + mask ^= 0xFFFF; + tmp = value & mask; + + /* Save bits above slot */ + mask ^= 0xFFFF; + mask <<= 3; + save_hi = value & mask; + + value = save_hi | (tmp << 3) | slot; + + b->cache_lru = value; +} + +void +BV (clib_bihash_update_lru_not_inline) (BVT (clib_bihash_bucket) * b, + u8 slot); + +static inline u8 BV (clib_bihash_get_lru) (BVT (clib_bihash_bucket) * b) +{ +#if BIHASH_KVP_CACHE_SIZE > 0 + return (b->cache_lru >> (3 * (BIHASH_KVP_CACHE_SIZE - 1))) & 7; +#else + return 0; +#endif +} + +static inline void BV (clib_bihash_reset_cache) (BVT (clib_bihash_bucket) * b) +{ +#if BIHASH_KVP_CACHE_SIZE > 0 + u16 initial_lru_value; + + memset (b->cache, 0xff, sizeof (b->cache)); + + /* + * We'll want the cache to be loaded from slot 0 -> slot N, so + * the initial LRU order is reverse index order. + */ + if (BIHASH_KVP_CACHE_SIZE == 1) + initial_lru_value = 0; + else if (BIHASH_KVP_CACHE_SIZE == 2) + initial_lru_value = (0 << 3) | (1 << 0); + else if (BIHASH_KVP_CACHE_SIZE == 3) + initial_lru_value = (0 << 6) | (1 << 3) | (2 << 0); + else if (BIHASH_KVP_CACHE_SIZE == 4) + initial_lru_value = (0 << 9) | (1 << 6) | (2 << 3) | (3 << 0); + else if (BIHASH_KVP_CACHE_SIZE == 5) + initial_lru_value = (0 << 12) | (1 << 9) | (2 << 6) | (3 << 3) | (4 << 0); + + b->cache_lru = initial_lru_value; +#endif +} + +static inline int BV (clib_bihash_lock_bucket) (BVT (clib_bihash_bucket) * b) +{ + BVT (clib_bihash_bucket) tmp_b; + u64 rv; + + tmp_b.as_u64 = 0; + tmp_b.cache_lru = 1 << 15; + + rv = __sync_fetch_and_or (&b->as_u64, tmp_b.as_u64); + tmp_b.as_u64 = rv; + /* Was already locked? */ + if (tmp_b.cache_lru & (1 << 15)) + return 0; + return 1; +} + +static inline void BV (clib_bihash_unlock_bucket) + (BVT (clib_bihash_bucket) * b) +{ + BVT (clib_bihash_bucket) tmp_b; + + tmp_b.as_u64 = b->as_u64; + tmp_b.cache_lru &= ~(1 << 15); + b->as_u64 = tmp_b.as_u64; +} + +static inline void *BV (clib_bihash_get_value) (BVT (clib_bihash) * h, + uword offset) +{ + u8 *hp = h->mheap; + u8 *vp = hp + offset; + + return (void *) vp; +} + +static inline uword BV (clib_bihash_get_offset) (BVT (clib_bihash) * h, + void *v) +{ + u8 *hp, *vp; + + hp = (u8 *) h->mheap; + vp = (u8 *) v; + + ASSERT ((vp - hp) < 0x100000000ULL); + return vp - hp; +} + +void BV (clib_bihash_init) + (BVT (clib_bihash) * h, char *name, u32 nbuckets, uword memory_size); + +void BV (clib_bihash_free) (BVT (clib_bihash) * h); + +int BV (clib_bihash_add_del) (BVT (clib_bihash) * h, + BVT (clib_bihash_kv) * add_v, int is_add); +int BV (clib_bihash_search) (BVT (clib_bihash) * h, + BVT (clib_bihash_kv) * search_v, + BVT (clib_bihash_kv) * return_v); + +void BV (clib_bihash_foreach_key_value_pair) (BVT (clib_bihash) * h, + void *callback, void *arg); + +format_function_t BV (format_bihash); +format_function_t BV (format_bihash_kvp); +format_function_t BV (format_bihash_lru); + +static inline int BV (clib_bihash_search_inline) + (BVT (clib_bihash) * h, BVT (clib_bihash_kv) * key_result) +{ + u64 hash; + u32 bucket_index; + BVT (clib_bihash_value) * v; + BVT (clib_bihash_bucket) * b; +#if BIHASH_KVP_CACHE_SIZE > 0 + BVT (clib_bihash_kv) * kvp; +#endif + int i, limit; + + hash = BV (clib_bihash_hash) (key_result); + + bucket_index = hash & (h->nbuckets - 1); + b = &h->buckets[bucket_index]; + + if (b->offset == 0) + return -1; + +#if BIHASH_KVP_CACHE_SIZE > 0 + /* Check the cache, if not currently locked */ + if (PREDICT_TRUE ((b->cache_lru & (1 << 15)) == 0)) + { + limit = BIHASH_KVP_CACHE_SIZE; + kvp = b->cache; + for (i = 0; i < limit; i++) + { + if (BV (clib_bihash_key_compare) (kvp[i].key, key_result->key)) + { + *key_result = kvp[i]; + h->cache_hits++; + return 0; + } + } + } +#endif + + hash >>= h->log2_nbuckets; + + v = BV (clib_bihash_get_value) (h, b->offset); + + /* If the bucket has unresolvable collisions, use linear search */ + limit = BIHASH_KVP_PER_PAGE; + v += (b->linear_search == 0) ? hash & ((1 << b->log2_pages) - 1) : 0; + if (PREDICT_FALSE (b->linear_search)) + limit <<= b->log2_pages; + + for (i = 0; i < limit; i++) + { + if (BV (clib_bihash_key_compare) (v->kvp[i].key, key_result->key)) + { + *key_result = v->kvp[i]; + +#if BIHASH_KVP_CACHE_SIZE > 0 + u8 cache_slot; + /* Try to lock the bucket */ + if (BV (clib_bihash_lock_bucket) (b)) + { + cache_slot = BV (clib_bihash_get_lru) (b); + b->cache[cache_slot] = v->kvp[i]; + BV (clib_bihash_update_lru) (b, cache_slot); + + /* Unlock the bucket */ + BV (clib_bihash_unlock_bucket) (b); + h->cache_misses++; + } +#endif + return 0; + } + } + return -1; +} + +static inline int BV (clib_bihash_search_inline_2) + (BVT (clib_bihash) * h, + BVT (clib_bihash_kv) * search_key, BVT (clib_bihash_kv) * valuep) +{ + u64 hash; + u32 bucket_index; + BVT (clib_bihash_value) * v; + BVT (clib_bihash_bucket) * b; +#if BIHASH_KVP_CACHE_SIZE > 0 + BVT (clib_bihash_kv) * kvp; +#endif + int i, limit; + + ASSERT (valuep); + + hash = BV (clib_bihash_hash) (search_key); + + bucket_index = hash & (h->nbuckets - 1); + b = &h->buckets[bucket_index]; + + if (b->offset == 0) + return -1; + + /* Check the cache, if currently unlocked */ +#if BIHASH_KVP_CACHE_SIZE > 0 + if (PREDICT_TRUE ((b->cache_lru & (1 << 15)) == 0)) + { + limit = BIHASH_KVP_CACHE_SIZE; + kvp = b->cache; + for (i = 0; i < limit; i++) + { + if (BV (clib_bihash_key_compare) (kvp[i].key, search_key->key)) + { + *valuep = kvp[i]; + h->cache_hits++; + return 0; + } + } + } +#endif + + hash >>= h->log2_nbuckets; + v = BV (clib_bihash_get_value) (h, b->offset); + + /* If the bucket has unresolvable collisions, use linear search */ + limit = BIHASH_KVP_PER_PAGE; + v += (b->linear_search == 0) ? hash & ((1 << b->log2_pages) - 1) : 0; + if (PREDICT_FALSE (b->linear_search)) + limit <<= b->log2_pages; + + for (i = 0; i < limit; i++) + { + if (BV (clib_bihash_key_compare) (v->kvp[i].key, search_key->key)) + { + *valuep = v->kvp[i]; + +#if BIHASH_KVP_CACHE_SIZE > 0 + u8 cache_slot; + + /* Try to lock the bucket */ + if (BV (clib_bihash_lock_bucket) (b)) + { + cache_slot = BV (clib_bihash_get_lru) (b); + b->cache[cache_slot] = v->kvp[i]; + BV (clib_bihash_update_lru) (b, cache_slot); + + /* Reenable the cache */ + BV (clib_bihash_unlock_bucket) (b); + h->cache_misses++; + } +#endif + return 0; + } + } + return -1; +} + +#endif /* __included_bihash_template_h__ */ + +/** @endcond */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/bitmap.h b/src/vppinfra/bitmap.h new file mode 100644 index 00000000..9e1ae493 --- /dev/null +++ b/src/vppinfra/bitmap.h @@ -0,0 +1,774 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003, 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_bitmap_h +#define included_clib_bitmap_h + +/** \file + Bitmaps built as vectors of machine words +*/ + +#include <vppinfra/vec.h> +#include <vppinfra/random.h> +#include <vppinfra/error.h> +#include <vppinfra/bitops.h> /* for count_set_bits */ + +typedef uword clib_bitmap_t; + +/** predicate function; is an entire bitmap empty? + @param ai - pointer to a bitmap + @returns 1 if the entire bitmap is zero, 0 otherwise +*/ +always_inline uword +clib_bitmap_is_zero (uword * ai) +{ + uword i; + for (i = 0; i < vec_len (ai); i++) + if (ai[i] != 0) + return 0; + return 1; +} + +/** predicate function; are two bitmaps equal? + @param a - pointer to a bitmap + @param b - pointer to a bitmap + @returns 1 if the bitmaps are equal, 0 otherwise +*/ +always_inline uword +clib_bitmap_is_equal (uword * a, uword * b) +{ + uword i; + if (vec_len (a) != vec_len (b)) + return 0; + for (i = 0; i < vec_len (a); i++) + if (a[i] != b[i]) + return 0; + return 1; +} + +/** Duplicate a bitmap + @param v - pointer to a bitmap + @returns a duplicate of the bitmap +*/ +#define clib_bitmap_dup(v) vec_dup(v) + +/** Free a bitmap + @param v - pointer to the bitmap to free +*/ +#define clib_bitmap_free(v) vec_free(v) + +/** Number of bytes in a bitmap + @param v - pointer to the bitmap +*/ +#define clib_bitmap_bytes(v) vec_bytes(v) + +/** Clear a bitmap + @param v - pointer to the bitmap to clear +*/ +#define clib_bitmap_zero(v) vec_zero(v) + +/** Allocate a bitmap with the supplied number of bits + @param [out] v - the resulting bitmap + @param n_bits - the required number of bits +*/ + +#define clib_bitmap_alloc(v,n_bits) \ + v = vec_new (uword, ((n_bits) + BITS (uword) - 1) / BITS (uword)) + +#define clib_bitmap_vec_validate(v,i) vec_validate_aligned((v),(i),sizeof(uword)) + +/* Make sure that a bitmap is at least n_bits in size */ +#define clib_bitmap_validate(v,n_bits) \ + clib_bitmap_vec_validate ((v), ((n_bits) - 1) / BITS (uword)) + +/* low-level routine to remove trailing zeros from a bitmap */ +always_inline uword * +_clib_bitmap_remove_trailing_zeros (uword * a) +{ + word i; + if (a) + { + for (i = _vec_len (a) - 1; i >= 0; i--) + if (a[i] != 0) + break; + _vec_len (a) = i + 1; + } + return a; +} + +/** Sets the ith bit of a bitmap to new_value. + No sanity checking. Be careful. + @param a - pointer to the bitmap + @param i - the bit position to interrogate + @param new_value - new value for the bit + @returns the old value of the bit +*/ +always_inline uword +clib_bitmap_set_no_check (uword * a, uword i, uword new_value) +{ + uword i0 = i / BITS (a[0]); + uword i1 = i % BITS (a[0]); + uword bit = (uword) 1 << i1; + uword ai, old_value; + + /* Removed ASSERT since uword * a may not be a vector. */ + /* ASSERT (i0 < vec_len (a)); */ + + ai = a[i0]; + old_value = (ai & bit) != 0; + ai &= ~bit; + ai |= ((uword) (new_value != 0)) << i1; + a[i0] = ai; + return old_value; +} + +/** Sets the ith bit of a bitmap to new_value + Removes trailing zeros from the bitmap + @param ai - pointer to the bitmap + @param i - the bit position to interrogate + @param value - new value for the bit + @returns the old value of the bit +*/ +always_inline uword * +clib_bitmap_set (uword * ai, uword i, uword value) +{ + uword i0 = i / BITS (ai[0]); + uword i1 = i % BITS (ai[0]); + uword a; + + /* Check for writing a zero to beyond end of bitmap. */ + if (value == 0 && i0 >= vec_len (ai)) + return ai; /* Implied trailing zeros. */ + + clib_bitmap_vec_validate (ai, i0); + + a = ai[i0]; + a &= ~((uword) 1 << i1); + a |= ((uword) (value != 0)) << i1; + ai[i0] = a; + + /* If bits have been cleared, test for zero. */ + if (a == 0) + ai = _clib_bitmap_remove_trailing_zeros (ai); + + return ai; +} + +/** Gets the ith bit value from a bitmap + @param ai - pointer to the bitmap + @param i - the bit position to interrogate + @returns the indicated bit value +*/ +always_inline uword +clib_bitmap_get (uword * ai, uword i) +{ + uword i0 = i / BITS (ai[0]); + uword i1 = i % BITS (ai[0]); + return i0 < vec_len (ai) && 0 != ((ai[i0] >> i1) & 1); +} + +/** Gets the ith bit value from a bitmap + Does not sanity-check the bit position. Be careful. + @param ai - pointer to the bitmap + @param i - the bit position to interrogate + @returns the indicated bit value, or garbage if the bit position is + out of range. +*/ +always_inline uword +clib_bitmap_get_no_check (uword * ai, uword i) +{ + uword i0 = i / BITS (ai[0]); + uword i1 = i % BITS (ai[0]); + return 0 != ((ai[i0] >> i1) & 1); +} + +always_inline uword +clib_bitmap_get_multiple_no_check (uword * ai, uword i, uword n_bits) +{ + uword i0 = i / BITS (ai[0]); + uword i1 = i % BITS (ai[0]); + ASSERT (i1 + n_bits <= BITS (uword)); + return 0 != ((ai[i0] >> i1) & pow2_mask (n_bits)); +} + +/** Gets the ith through ith + n_bits bit values from a bitmap + @param bitmap - pointer to the bitmap + @param i - the first bit position to retrieve + @param n_bits - the number of bit positions to retrieve + @returns the indicated range of bits +*/ +always_inline uword +clib_bitmap_get_multiple (uword * bitmap, uword i, uword n_bits) +{ + uword i0, i1, result; + uword l = vec_len (bitmap); + + ASSERT (n_bits <= BITS (result)); + + i0 = i / BITS (bitmap[0]); + i1 = i % BITS (bitmap[0]); + + /* Check first word. */ + result = 0; + if (i0 < l) + { + result |= (bitmap[i0] >> i1); + if (n_bits < BITS (bitmap[0])) + result &= (((uword) 1 << n_bits) - 1); + } + + /* Check for overlap into next word. */ + i0++; + if (i1 + n_bits > BITS (bitmap[0]) && i0 < l) + { + n_bits -= BITS (bitmap[0]) - i1; + result |= + (bitmap[i0] & (((uword) 1 << n_bits) - 1)) << (BITS (bitmap[0]) - i1); + } + + return result; +} + +/** sets the ith through ith + n_bits bits in a bitmap + @param bitmap - pointer to the bitmap + @param i - the first bit position to retrieve + @param value - the values to set + @param n_bits - the number of bit positions to set + @returns a pointer to the updated bitmap, which may expand and move +*/ + +always_inline uword * +clib_bitmap_set_multiple (uword * bitmap, uword i, uword value, uword n_bits) +{ + uword i0, i1, l, t, m; + + ASSERT (n_bits <= BITS (value)); + + i0 = i / BITS (bitmap[0]); + i1 = i % BITS (bitmap[0]); + + /* Allocate bitmap. */ + clib_bitmap_vec_validate (bitmap, (i + n_bits) / BITS (bitmap[0])); + l = vec_len (bitmap); + + m = ~0; + if (n_bits < BITS (value)) + m = (((uword) 1 << n_bits) - 1); + value &= m; + + /* Insert into first word. */ + t = bitmap[i0]; + t &= ~(m << i1); + t |= value << i1; + bitmap[i0] = t; + + /* Insert into second word. */ + i0++; + if (i1 + n_bits > BITS (bitmap[0]) && i0 < l) + { + t = BITS (bitmap[0]) - i1; + value >>= t; + n_bits -= t; + t = bitmap[i0]; + m = ((uword) 1 << n_bits) - 1; + t &= ~m; + t |= value; + bitmap[i0] = t; + } + + return bitmap; +} + +always_inline uword * +clfib_bitmap_set_region (uword * bitmap, uword i, uword value, uword n_bits) +{ + uword a0, a1, b0; + uword i_end, mask; + + a0 = i / BITS (bitmap[0]); + a1 = i % BITS (bitmap[0]); + + i_end = i + n_bits; + b0 = i_end / BITS (bitmap[0]); + + clib_bitmap_vec_validate (bitmap, b0); + + /* First word. */ + mask = n_bits < BITS (bitmap[0]) ? pow2_mask (n_bits) : ~0; + mask <<= a1; + + if (value) + bitmap[a0] |= mask; + else + bitmap[a0] &= ~mask; + + for (a0++; a0 < b0; a0++) + bitmap[a0] = value ? ~0 : 0; + + if (a0 == b0) + { + word n_bits_left = n_bits - (BITS (bitmap[0]) - a1); + mask = pow2_mask (n_bits_left); + if (value) + bitmap[a0] |= mask; + else + bitmap[a0] &= ~mask; + } + + return bitmap; +} + +/** Macro to iterate across set bits in a bitmap + + @param i - the current set bit + @param ai - the bitmap + @param body - the expression to evaluate for each set bit +*/ +#define clib_bitmap_foreach(i,ai,body) \ +do { \ + uword __bitmap_i, __bitmap_ai, __bitmap_len, __bitmap_first_set; \ + __bitmap_len = vec_len ((ai)); \ + for (__bitmap_i = 0; __bitmap_i < __bitmap_len; __bitmap_i++) \ + { \ + __bitmap_ai = (ai)[__bitmap_i]; \ + while (__bitmap_ai != 0) \ + { \ + __bitmap_first_set = first_set (__bitmap_ai); \ + (i) = (__bitmap_i * BITS ((ai)[0]) \ + + min_log2 (__bitmap_first_set)); \ + do { body; } while (0); \ + __bitmap_ai ^= __bitmap_first_set; \ + } \ + } \ +} while (0) + + +/** Return the lowest numbered set bit in a bitmap + @param ai - pointer to the bitmap + @returns lowest numbered set bit, or ~0 if the entire bitmap is zero +*/ +always_inline uword +clib_bitmap_first_set (uword * ai) +{ + uword i; + for (i = 0; i < vec_len (ai); i++) + { + uword x = ai[i]; + if (x != 0) + return i * BITS (ai[0]) + log2_first_set (x); + } + return ~0; +} + +/** Return the higest numbered set bit in a bitmap + @param ai - pointer to the bitmap + @returns lowest numbered set bit, or ~0 if the entire bitmap is zero +*/ +always_inline uword +clib_bitmap_last_set (uword * ai) +{ + uword i; + + for (i = vec_len (ai); i > 0; i--) + { + uword x = ai[i - 1]; + if (x != 0) + { + uword first_bit; + count_leading_zeros (first_bit, x); + return (i) * BITS (ai[0]) - first_bit - 1; + } + } + return ~0; +} + +/** Return the lowest numbered clear bit in a bitmap + @param ai - pointer to the bitmap + @returns lowest numbered clear bit +*/ +always_inline uword +clib_bitmap_first_clear (uword * ai) +{ + uword i; + for (i = 0; i < vec_len (ai); i++) + { + uword x = ~ai[i]; + if (x != 0) + return i * BITS (ai[0]) + log2_first_set (x); + } + return i * BITS (ai[0]); +} + +/** Return the number of set bits in a bitmap + @param ai - pointer to the bitmap + @returns the number of set bits in the bitmap +*/ +always_inline uword +clib_bitmap_count_set_bits (uword * ai) +{ + uword i; + uword n_set = 0; + for (i = 0; i < vec_len (ai); i++) + n_set += count_set_bits (ai[i]); + return n_set; +} + +/** Logical operator across two bitmaps + + @param ai - pointer to the destination bitmap + @param bi - pointer to the source bitmap + @returns ai = ai and bi. ai is modified, bi is not modified +*/ +always_inline uword *clib_bitmap_and (uword * ai, uword * bi); + +/** Logical operator across two bitmaps + + @param ai - pointer to the destination bitmap + @param bi - pointer to the source bitmap + @returns ai = ai & ~bi. ai is modified, bi is not modified +*/ +always_inline uword *clib_bitmap_andnot (uword * ai, uword * bi); + +/** Logical operator across two bitmaps + + @param ai - pointer to the destination bitmap + @param bi - pointer to the source bitmap + @returns ai = ai & ~bi. ai is modified, bi is not modified +*/ +always_inline uword *clib_bitmap_or (uword * ai, uword * bi); +/** Logical operator across two bitmaps + + @param ai - pointer to the destination bitmap + @param bi - pointer to the source bitmap + @returns ai = ai or bi. ai is modified, bi is not modified +*/ +always_inline uword *clib_bitmap_or (uword * ai, uword * bi); + +/** Logical operator across two bitmaps + + @param ai - pointer to the destination bitmap + @param bi - pointer to the source bitmap + @returns ai = ai xor bi. ai is modified, bi is not modified +*/ +always_inline uword *clib_bitmap_xor (uword * ai, uword * bi); + +/* ALU function definition macro for functions taking two bitmaps. */ +#define _(name, body, check_zero) \ +always_inline uword * \ +clib_bitmap_##name (uword * ai, uword * bi) \ +{ \ + uword i, a, b, bi_len, n_trailing_zeros; \ + \ + n_trailing_zeros = 0; \ + bi_len = vec_len (bi); \ + if (bi_len > 0) \ + clib_bitmap_vec_validate (ai, bi_len - 1); \ + for (i = 0; i < vec_len (ai); i++) \ + { \ + a = ai[i]; \ + b = i < bi_len ? bi[i] : 0; \ + do { body; } while (0); \ + ai[i] = a; \ + if (check_zero) \ + n_trailing_zeros = a ? 0 : (n_trailing_zeros + 1); \ + } \ + if (check_zero) \ + _vec_len (ai) -= n_trailing_zeros; \ + return ai; \ +} + +/* ALU functions: */ +_(and, a = a & b, 1) +_(andnot, a = a & ~b, 1) _(or, a = a | b, 0) _(xor, a = a ^ b, 1) +#undef _ +/** Logical operator across two bitmaps which duplicates the first bitmap + + @param ai - pointer to the destination bitmap + @param bi - pointer to the source bitmap + @returns aiDup = ai and bi. Neither ai nor bi are modified +*/ + always_inline uword * + clib_bitmap_dup_and (uword * ai, uword * bi); + +/** Logical operator across two bitmaps which duplicates the first bitmap + + @param ai - pointer to the destination bitmap + @param bi - pointer to the source bitmap + @returns aiDup = ai & ~bi. Neither ai nor bi are modified +*/ + always_inline uword * + clib_bitmap_dup_andnot (uword * ai, uword * bi); + +/** Logical operator across two bitmaps which duplicates the first bitmap + + @param ai - pointer to the destination bitmap + @param bi - pointer to the source bitmap + @returns aiDup = ai or bi. Neither ai nor bi are modified +*/ + always_inline uword * + clib_bitmap_dup_or (uword * ai, uword * bi); + +/** Logical operator across two bitmaps which duplicates the first bitmap + + @param ai - pointer to the destination bitmap + @param bi - pointer to the source bitmap + @returns aiDup = ai xor bi. Neither ai nor bi are modified +*/ + always_inline uword * + clib_bitmap_dup_xor (uword * ai, uword * bi); + +#define _(name) \ + always_inline uword * \ + clib_bitmap_dup_##name (uword * ai, uword * bi) \ +{ return clib_bitmap_##name (clib_bitmap_dup (ai), bi); } + +_(and); +_(andnot); +_(or); +_(xor); + +#undef _ + +/* ALU function definition macro for functions taking one bitmap and an immediate. */ +#define _(name, body, check_zero) \ +always_inline uword * \ +clib_bitmap_##name (uword * ai, uword i) \ +{ \ + uword i0 = i / BITS (ai[0]); \ + uword i1 = i % BITS (ai[0]); \ + uword a, b; \ + clib_bitmap_vec_validate (ai, i0); \ + a = ai[i0]; \ + b = (uword) 1 << i1; \ + do { body; } while (0); \ + ai[i0] = a; \ + if (check_zero && a == 0) \ + ai = _clib_bitmap_remove_trailing_zeros (ai); \ + return ai; \ +} + +/* ALU functions immediate: */ +_(andi, a = a & b, 1) +_(andnoti, a = a & ~b, 1) _(ori, a = a | b, 0) _(xori, a = a ^ b, 1) +#undef _ +/** Return a random bitmap of the requested length + @param ai - pointer to the destination bitmap + @param n_bits - number of bits to allocate + @param [in,out] seed - pointer to the random number seed + @returns a reasonably random bitmap based. See random.h. +*/ + always_inline uword * + clib_bitmap_random (uword * ai, uword n_bits, u32 * seed) +{ + vec_reset_length (ai); + + if (n_bits > 0) + { + uword i = n_bits - 1; + uword i0, i1; + uword log2_rand_max; + + log2_rand_max = min_log2 (random_u32_max ()); + + i0 = i / BITS (ai[0]); + i1 = i % BITS (ai[0]); + + clib_bitmap_vec_validate (ai, i0); + for (i = 0; i <= i0; i++) + { + uword n; + for (n = 0; n < BITS (ai[i]); n += log2_rand_max) + ai[i] |= random_u32 (seed) << n; + } + if (i1 + 1 < BITS (ai[0])) + ai[i0] &= (((uword) 1 << (i1 + 1)) - 1); + } + return ai; +} + +/** Return the next set bit in a bitmap starting at bit i + @param ai - pointer to the bitmap + @param i - first bit position to test + @returns first set bit position at or after i, + ~0 if no further set bits are found +*/ +always_inline uword +clib_bitmap_next_set (uword * ai, uword i) +{ + uword i0 = i / BITS (ai[0]); + uword i1 = i % BITS (ai[0]); + uword t; + + if (i0 < vec_len (ai)) + { + t = (ai[i0] >> i1) << i1; + if (t) + return log2_first_set (t) + i0 * BITS (ai[0]); + + for (i0++; i0 < vec_len (ai); i0++) + { + t = ai[i0]; + if (t) + return log2_first_set (t) + i0 * BITS (ai[0]); + } + } + + return ~0; +} + +/** Return the next clear bit in a bitmap starting at bit i + @param ai - pointer to the bitmap + @param i - first bit position to test + @returns first clear bit position at or after i +*/ +always_inline uword +clib_bitmap_next_clear (uword * ai, uword i) +{ + uword i0 = i / BITS (ai[0]); + uword i1 = i % BITS (ai[0]); + uword t; + + if (i0 < vec_len (ai)) + { + t = (~ai[i0] >> i1) << i1; + if (t) + return log2_first_set (t) + i0 * BITS (ai[0]); + + for (i0++; i0 < vec_len (ai); i0++) + { + t = ~ai[i0]; + if (t) + return log2_first_set (t) + i0 * BITS (ai[0]); + } + } + return i; +} + +/** unformat a list of bit ranges into a bitmap (eg "0-3,5-7,11" ) + + uword * bitmap; + rv = unformat ("%U", unformat_bitmap_list, &bitmap); + + Standard unformat_function_t arguments + + @param input - pointer an unformat_input_t + @param va - varargs list comprising a single uword ** + @returns 1 on success, 0 on failure +*/ +static inline uword +unformat_bitmap_list (unformat_input_t * input, va_list * va) +{ + uword **bitmap_return = va_arg (*va, uword **); + uword *bitmap = 0; + + u32 a, b; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + int i; + if (unformat (input, "%u-%u,", &a, &b)) + ; + else if (unformat (input, "%u,", &a)) + b = a; + else if (unformat (input, "%u-%u", &a, &b)) + ; + else if (unformat (input, "%u", &a)) + b = a; + else if (bitmap) + { + unformat_put_input (input); + break; + } + else + goto error; + + if (b < a) + goto error; + + for (i = a; i <= b; i++) + bitmap = clib_bitmap_set (bitmap, i, 1); + } + *bitmap_return = bitmap; + return 1; +error: + clib_bitmap_free (bitmap); + return 0; +} + +/** Format a bitmap as a string of hex bytes + + uword * bitmap; + s = format ("%U", format_bitmap_hex, bitmap); + + Standard format_function_t arguments + + @param s - string under construction + @param args - varargs list comprising a single uword * + @returns string under construction +*/ +static inline u8 * +format_bitmap_hex (u8 * s, va_list * args) +{ + uword *bitmap = va_arg (*args, uword *); + int i, is_trailing_zero = 1; + + if (!bitmap) + return format (s, "0"); + + i = vec_bytes (bitmap) * 2; + + while (i > 0) + { + u8 x = clib_bitmap_get_multiple (bitmap, --i * 4, 4); + + if (x && is_trailing_zero) + is_trailing_zero = 0; + + if (x || !is_trailing_zero) + s = format (s, "%x", x); + } + return s; +} +#endif /* included_clib_bitmap_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/bitops.h b/src/vppinfra/bitops.h new file mode 100644 index 00000000..ab91b8ae --- /dev/null +++ b/src/vppinfra/bitops.h @@ -0,0 +1,179 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_bitops_h +#define included_clib_bitops_h + +#include <vppinfra/clib.h> + +/* Population count from Hacker's Delight. */ +always_inline uword +count_set_bits (uword x) +{ +#if uword_bits == 64 + const uword c1 = 0x5555555555555555; + const uword c2 = 0x3333333333333333; + const uword c3 = 0x0f0f0f0f0f0f0f0f; +#else + const uword c1 = 0x55555555; + const uword c2 = 0x33333333; + const uword c3 = 0x0f0f0f0f; +#endif + + /* Sum 1 bit at a time. */ + x = x - ((x >> (uword) 1) & c1); + + /* 2 bits at a time. */ + x = (x & c2) + ((x >> (uword) 2) & c2); + + /* 4 bits at a time. */ + x = (x + (x >> (uword) 4)) & c3; + + /* 8, 16, 32 bits at a time. */ + x = x + (x >> (uword) 8); + x = x + (x >> (uword) 16); +#if uword_bits == 64 + x = x + (x >> (uword) 32); +#endif + + return x & (2 * BITS (uword) - 1); +} + +/* Based on "Hacker's Delight" code from GLS. */ +typedef struct +{ + uword masks[1 + log2_uword_bits]; +} compress_main_t; + +always_inline void +compress_init (compress_main_t * cm, uword mask) +{ + uword q, m, zm, n, i; + + m = ~mask; + zm = mask; + + cm->masks[0] = mask; + for (i = 0; i < log2_uword_bits; i++) + { + q = m; + m ^= m << 1; + m ^= m << 2; + m ^= m << 4; + m ^= m << 8; + m ^= m << 16; +#if uword_bits > 32 + m ^= m << (uword) 32; +#endif + cm->masks[1 + i] = n = (m << 1) & zm; + m = q & ~m; + q = zm & n; + zm = zm ^ q ^ (q >> (1 << i)); + } +} + +always_inline uword +compress_bits (compress_main_t * cm, uword x) +{ + uword q, r; + + r = x & cm->masks[0]; + q = r & cm->masks[1]; + r ^= q ^ (q >> 1); + q = r & cm->masks[2]; + r ^= q ^ (q >> 2); + q = r & cm->masks[3]; + r ^= q ^ (q >> 4); + q = r & cm->masks[4]; + r ^= q ^ (q >> 8); + q = r & cm->masks[5]; + r ^= q ^ (q >> 16); +#if uword_bits > 32 + q = r & cm->masks[6]; + r ^= q ^ (q >> (uword) 32); +#endif + + return r; +} + +always_inline uword +rotate_left (uword x, uword i) +{ + return (x << i) | (x >> (BITS (i) - i)); +} + +always_inline uword +rotate_right (uword x, uword i) +{ + return (x >> i) | (x << (BITS (i) - i)); +} + +/* Returns snoob from Hacker's Delight. Next highest number + with same number of set bits. */ +always_inline uword +next_with_same_number_of_set_bits (uword x) +{ + uword smallest, ripple, ones; + smallest = x & -x; + ripple = x + smallest; + ones = x ^ ripple; + ones = ones >> (2 + log2_first_set (x)); + return ripple | ones; +} + +#define foreach_set_bit(var,mask,body) \ +do { \ + uword _foreach_set_bit_m_##var = (mask); \ + uword _foreach_set_bit_f_##var; \ + while (_foreach_set_bit_m_##var != 0) \ + { \ + _foreach_set_bit_f_##var = first_set (_foreach_set_bit_m_##var); \ + _foreach_set_bit_m_##var ^= _foreach_set_bit_f_##var; \ + (var) = min_log2 (_foreach_set_bit_f_##var); \ + do { body; } while (0); \ + } \ +} while (0) + +#endif /* included_clib_bitops_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/byte_order.h b/src/vppinfra/byte_order.h new file mode 100644 index 00000000..b263538c --- /dev/null +++ b/src/vppinfra/byte_order.h @@ -0,0 +1,202 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2004 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_byte_order_h +#define included_clib_byte_order_h + +#include <vppinfra/clib.h> + +#if (__BYTE_ORDER__)==( __ORDER_LITTLE_ENDIAN__) +#define CLIB_ARCH_IS_BIG_ENDIAN (0) +#define CLIB_ARCH_IS_LITTLE_ENDIAN (1) +#else +/* Default is big endian. */ +#define CLIB_ARCH_IS_BIG_ENDIAN (1) +#define CLIB_ARCH_IS_LITTLE_ENDIAN (0) +#endif + +/* Big/little endian. */ +#define clib_arch_is_big_endian CLIB_ARCH_IS_BIG_ENDIAN +#define clib_arch_is_little_endian CLIB_ARCH_IS_LITTLE_ENDIAN + +always_inline u16 +clib_byte_swap_u16 (u16 x) +{ + return (x >> 8) | (x << 8); +} + +always_inline i16 +clib_byte_swap_i16 (i16 x) +{ + return clib_byte_swap_u16 (x); +} + +always_inline u32 +clib_byte_swap_u32 (u32 x) +{ +#if defined (i386) || defined (__x86_64__) + if (!__builtin_constant_p (x)) + { + asm volatile ("bswap %0":"=r" (x):"0" (x)); + return x; + } +#endif + return ((x << 24) | ((x & 0xff00) << 8) | ((x >> 8) & 0xff00) | (x >> 24)); +} + +always_inline i32 +clib_byte_swap_i32 (i32 x) +{ + return clib_byte_swap_u32 (x); +} + +always_inline u64 +clib_byte_swap_u64 (u64 x) +{ +#if defined (__x86_64__) + if (!__builtin_constant_p (x)) + { + asm volatile ("bswapq %0":"=r" (x):"0" (x)); + return x; + } +#endif +#define _(x,n,i) \ + ((((x) >> (8*(i))) & 0xff) << (8*((n)-(i)-1))) + return (_(x, 8, 0) | _(x, 8, 1) + | _(x, 8, 2) | _(x, 8, 3) + | _(x, 8, 4) | _(x, 8, 5) | _(x, 8, 6) | _(x, 8, 7)); +#undef _ +} + +always_inline i64 +clib_byte_swap_i64 (i64 x) +{ + return clib_byte_swap_u64 (x); +} + +#define _(sex,type) \ +/* HOST -> SEX */ \ +always_inline type \ +clib_host_to_##sex##_##type (type x) \ +{ \ + if (! clib_arch_is_##sex##_endian) \ + x = clib_byte_swap_##type (x); \ + return x; \ +} \ + \ +always_inline type \ +clib_host_to_##sex##_mem_##type (type * x) \ +{ \ + type v = x[0]; \ + return clib_host_to_##sex##_##type (v); \ +} \ + \ +always_inline type \ +clib_host_to_##sex##_unaligned_mem_##type (type * x) \ +{ \ + type v = clib_mem_unaligned (x, type); \ + return clib_host_to_##sex##_##type (v); \ +} \ + \ +/* SEX -> HOST */ \ +always_inline type \ +clib_##sex##_to_host_##type (type x) \ +{ return clib_host_to_##sex##_##type (x); } \ + \ +always_inline type \ +clib_##sex##_to_host_mem_##type (type * x) \ +{ return clib_host_to_##sex##_mem_##type (x); } \ + \ +always_inline type \ +clib_##sex##_to_host_unaligned_mem_##type (type * x) \ +{ return clib_host_to_##sex##_unaligned_mem_##type (x); } + +#ifndef __cplusplus +_(little, u16) +_(little, u32) +_(little, u64) +_(little, i16) +_(little, i32) +_(little, i64) +_(big, u16) _(big, u32) _(big, u64) _(big, i16) _(big, i32) _(big, i64) +#endif +#undef _ +/* Network "net" alias for "big". */ +#define _(type) \ +always_inline type \ +clib_net_to_host_##type (type x) \ +{ return clib_big_to_host_##type (x); } \ + \ +always_inline type \ +clib_net_to_host_mem_##type (type * x) \ +{ return clib_big_to_host_mem_##type (x); } \ + \ +always_inline type \ +clib_net_to_host_unaligned_mem_##type (type * x) \ +{ return clib_big_to_host_unaligned_mem_##type (x); } \ + \ +always_inline type \ +clib_host_to_net_##type (type x) \ +{ return clib_host_to_big_##type (x); } \ + \ +always_inline type \ +clib_host_to_net_mem_##type (type * x) \ +{ return clib_host_to_big_mem_##type (x); } \ + \ +always_inline type \ +clib_host_to_net_unaligned_mem_##type (type * x) \ +{ return clib_host_to_big_unaligned_mem_##type (x); } +#ifndef __cplusplus + _(u16); +_(i16); +_(u32); +_(i32); +_(u64); +_(i64); +#endif + +#undef _ + +#endif /* included_clib_byte_order_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/cache.h b/src/vppinfra/cache.h new file mode 100644 index 00000000..7464b77a --- /dev/null +++ b/src/vppinfra/cache.h @@ -0,0 +1,104 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_cache_h +#define included_clib_cache_h + +#include <vppinfra/error_bootstrap.h> + +/* + * Allow CFLAGS to override the arch-specific cache line size + */ +#ifndef CLIB_LOG2_CACHE_LINE_BYTES + +#if defined(__x86_64__) || defined(__ARM_ARCH_7A__) || defined(__i386__) +#define CLIB_LOG2_CACHE_LINE_BYTES 6 +#endif + +#ifdef __aarch64__ +#define CLIB_LOG2_CACHE_LINE_BYTES 7 +#endif + +/* Default cache line size of 32 bytes. */ +#ifndef CLIB_LOG2_CACHE_LINE_BYTES +#define CLIB_LOG2_CACHE_LINE_BYTES 5 +#endif + +#endif /* CLIB_LOG2_CACHE_LINE_BYTES defined */ + +#if (CLIB_LOG2_CACHE_LINE_BYTES >= 9) +#error Cache line size 512 bytes or greater +#endif + +#define CLIB_CACHE_LINE_BYTES (1 << CLIB_LOG2_CACHE_LINE_BYTES) +#define CLIB_CACHE_LINE_ALIGN_MARK(mark) u8 mark[0] __attribute__((aligned(CLIB_CACHE_LINE_BYTES))) + +/* Read/write arguments to __builtin_prefetch. */ +#define CLIB_PREFETCH_READ 0 +#define CLIB_PREFETCH_LOAD 0 /* alias for read */ +#define CLIB_PREFETCH_WRITE 1 +#define CLIB_PREFETCH_STORE 1 /* alias for write */ + +#define _CLIB_PREFETCH(n,size,type) \ + if ((size) > (n)*CLIB_CACHE_LINE_BYTES) \ + __builtin_prefetch (_addr + (n)*CLIB_CACHE_LINE_BYTES, \ + CLIB_PREFETCH_##type, \ + /* locality */ 3); + +#define CLIB_PREFETCH(addr,size,type) \ +do { \ + void * _addr = (addr); \ + \ + ASSERT ((size) <= 4*CLIB_CACHE_LINE_BYTES); \ + _CLIB_PREFETCH (0, size, type); \ + _CLIB_PREFETCH (1, size, type); \ + _CLIB_PREFETCH (2, size, type); \ + _CLIB_PREFETCH (3, size, type); \ +} while (0) + +#undef _ + +#endif /* included_clib_cache_h */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/clib.h b/src/vppinfra/clib.h new file mode 100644 index 00000000..fbb2a21c --- /dev/null +++ b/src/vppinfra/clib.h @@ -0,0 +1,365 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_h +#define included_clib_h + +/* Standalone means to not assume we are running on a Unix box. */ +#if ! defined (CLIB_STANDALONE) && ! defined (CLIB_LINUX_KERNEL) +#define CLIB_UNIX +#endif + +#include <vppinfra/types.h> + +/* Global DEBUG flag. Setting this to 1 or 0 turns off + ASSERT (see vppinfra/error.h) & other debugging code. */ +#ifndef CLIB_DEBUG +#define CLIB_DEBUG 0 +#endif + +#ifndef NULL +#define NULL ((void *) 0) +#endif + +#define BITS(x) (8*sizeof(x)) +#define ARRAY_LEN(x) (sizeof (x)/sizeof (x[0])) + +#define _STRUCT_FIELD(t,f) (((t *) 0)->f) +#define STRUCT_OFFSET_OF(t,f) ((uword) & _STRUCT_FIELD (t, f)) +#define STRUCT_BIT_OFFSET_OF(t,f) (BITS(u8) * (uword) & _STRUCT_FIELD (t, f)) +#define STRUCT_SIZE_OF(t,f) (sizeof (_STRUCT_FIELD (t, f))) +#define STRUCT_BITS_OF(t,f) (BITS (_STRUCT_FIELD (t, f))) +#define STRUCT_ARRAY_LEN(t,f) ARRAY_LEN (_STRUCT_FIELD (t, f)) +#define STRUCT_MARK(mark) u8 mark[0] +#define STRUCT_MARK_PTR(v, f) &(v)->f + +/* Stride in bytes between struct array elements. */ +#define STRUCT_STRIDE_OF(t,f) \ + ( ((uword) & (((t *) 0)[1].f)) \ + - ((uword) & (((t *) 0)[0].f))) + +#define STRUCT_OFFSET_OF_VAR(v,f) ((uword) (&(v)->f) - (uword) (v)) + +/* Used to pack structure elements. */ +#define CLIB_PACKED(x) x __attribute__ ((packed)) +#define CLIB_UNUSED(x) x __attribute__ ((unused)) + +#define never_inline __attribute__ ((__noinline__)) + +#if CLIB_DEBUG > 0 +#define always_inline static inline +#define static_always_inline static inline +#else +#define always_inline static inline __attribute__ ((__always_inline__)) +#define static_always_inline static inline __attribute__ ((__always_inline__)) +#endif + + +/* Reserved (unused) structure element with address offset between + from and to. */ +#define CLIB_PAD_FROM_TO(from,to) u8 pad_##from[(to) - (from)] + +/* Hints to compiler about hot/cold code. */ +#define PREDICT_FALSE(x) __builtin_expect((x),0) +#define PREDICT_TRUE(x) __builtin_expect((x),1) + +/* Full memory barrier (read and write). */ +#define CLIB_MEMORY_BARRIER() __sync_synchronize () + +#if __x86_64__ +#define CLIB_MEMORY_STORE_BARRIER() __builtin_ia32_sfence () +#else +#define CLIB_MEMORY_STORE_BARRIER() __sync_synchronize () +#endif + +/* Arranges for function to be called before main. */ +#define INIT_FUNCTION(decl) \ + decl __attribute ((constructor)); \ + decl + +/* Arranges for function to be called before exit. */ +#define EXIT_FUNCTION(decl) \ + decl __attribute ((destructor)); \ + decl + +/* Use __builtin_clz if available. */ +#ifdef __GNUC__ +#include <features.h> +#if __GNUC_PREREQ(3, 4) +#if uword_bits == 64 +#define count_leading_zeros(count,x) count = __builtin_clzll (x) +#define count_trailing_zeros(count,x) count = __builtin_ctzll (x) +#else +#define count_leading_zeros(count,x) count = __builtin_clzl (x) +#define count_trailing_zeros(count,x) count = __builtin_ctzl (x) +#endif +#endif +#endif + +#ifndef count_leading_zeros + +/* Misc. integer arithmetic functions. */ +#if defined (i386) +#define count_leading_zeros(count, x) \ + do { \ + word _clz; \ + __asm__ ("bsrl %1,%0" \ + : "=r" (_clz) : "rm" ((word) (x)));\ + (count) = _clz ^ 31; \ + } while (0) + +#define count_trailing_zeros(count, x) \ + __asm__ ("bsfl %1,%0" : "=r" (count) : "rm" ((word)(x))) +#endif /* i386 */ + +#if defined (__alpha__) && defined (HAVE_CIX) +#define count_leading_zeros(count, x) \ + __asm__ ("ctlz %1,%0" \ + : "=r" ((word) (count)) \ + : "r" ((word) (x))) +#define count_trailing_zeros(count, x) \ + __asm__ ("cttz %1,%0" \ + : "=r" ((word) (count)) \ + : "r" ((word) (x))) +#endif /* alpha && HAVE_CIX */ + +#if __mips >= 4 + +/* Select between 32/64 opcodes. */ +#if uword_bits == 32 +#define count_leading_zeros(_count, _x) \ + __asm__ ("clz %[count],%[x]" \ + : [count] "=r" ((word) (_count)) \ + : [x] "r" ((word) (_x))) +#else +#define count_leading_zeros(_count, _x) \ + __asm__ ("dclz %[count],%[x]" \ + : [count] "=r" ((word) (_count)) \ + : [x] "r" ((word) (_x))) +#endif + +#endif /* __mips >= 4 */ + +#endif /* count_leading_zeros */ + +#if defined (count_leading_zeros) +always_inline uword +min_log2 (uword x) +{ + uword n; + count_leading_zeros (n, x); + return BITS (uword) - n - 1; +} +#else +always_inline uword +min_log2 (uword x) +{ + uword a = x, b = BITS (uword) / 2, c = 0, r = 0; + + /* Reduce x to 4 bit result. */ +#define _ \ +{ \ + c = a >> b; \ + if (c) a = c; \ + if (c) r += b; \ + b /= 2; \ +} + + if (BITS (uword) > 32) + _; + _; + _; + _; +#undef _ + + /* Do table lookup on 4 bit partial. */ + if (BITS (uword) > 32) + { + const u64 table = 0x3333333322221104LL; + uword t = (table >> (4 * a)) & 0xf; + r = t < 4 ? r + t : ~0; + } + else + { + const u32 table = 0x22221104; + uword t = (a & 8) ? 3 : ((table >> (4 * a)) & 0xf); + r = t < 4 ? r + t : ~0; + } + + return r; +} +#endif + +always_inline uword +max_log2 (uword x) +{ + uword l = min_log2 (x); + if (x > ((uword) 1 << l)) + l++; + return l; +} + +always_inline u64 +min_log2_u64 (u64 x) +{ + if (BITS (uword) == 64) + return min_log2 (x); + else + { + uword l, y; + y = x; + l = 0; + if (y == 0) + { + l += 32; + x >>= 32; + } + l += min_log2 (x); + return l; + } +} + +always_inline uword +pow2_mask (uword x) +{ + return ((uword) 1 << x) - (uword) 1; +} + +always_inline uword +max_pow2 (uword x) +{ + word y = (word) 1 << min_log2 (x); + if (x > y) + y *= 2; + return y; +} + +always_inline uword +is_pow2 (uword x) +{ + return 0 == (x & (x - 1)); +} + +always_inline uword +round_pow2 (uword x, uword pow2) +{ + return (x + pow2 - 1) & ~(pow2 - 1); +} + +always_inline u64 +round_pow2_u64 (u64 x, u64 pow2) +{ + return (x + pow2 - 1) & ~(pow2 - 1); +} + +always_inline uword +first_set (uword x) +{ + return x & -x; +} + +always_inline uword +log2_first_set (uword x) +{ + uword result; +#ifdef count_trailing_zeros + count_trailing_zeros (result, x); +#else + result = min_log2 (first_set (x)); +#endif + return result; +} + +always_inline f64 +flt_round_down (f64 x) +{ + return (int) x; +} + +always_inline word +flt_round_nearest (f64 x) +{ + return (word) (x + .5); +} + +always_inline f64 +flt_round_to_multiple (f64 x, f64 f) +{ + return f * flt_round_nearest (x / f); +} + +#define clib_max(x,y) \ +({ \ + __typeof__ (x) _x = (x); \ + __typeof__ (y) _y = (y); \ + _x > _y ? _x : _y; \ +}) + +#define clib_min(x,y) \ +({ \ + __typeof__ (x) _x = (x); \ + __typeof__ (y) _y = (y); \ + _x < _y ? _x : _y; \ +}) + +#define clib_abs(x) \ +({ \ + __typeof__ (x) _x = (x); \ + _x < 0 ? -_x : _x; \ +}) + +/* Standard standalone-only function declarations. */ +#ifndef CLIB_UNIX +void clib_standalone_init (void *memory, uword memory_bytes); + +void qsort (void *base, uword n, uword size, + int (*)(const void *, const void *)); +#endif + +/* Stack backtrace. */ +uword +clib_backtrace (uword * callers, uword max_callers, uword n_frames_to_skip); + +#endif /* included_clib_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/clib_error.h b/src/vppinfra/clib_error.h new file mode 100644 index 00000000..45f18eb1 --- /dev/null +++ b/src/vppinfra/clib_error.h @@ -0,0 +1,35 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef included_clib_error_h +#define included_clib_error_h + +#include <vppinfra/types.h> + +typedef struct +{ + /* Error message. */ + u8 *what; + + /* Where error occurred (e.g. __FUNCTION__ __LINE__) */ + const u8 *where; + + uword flags; + + /* Error code (e.g. errno for Unix errors). */ + any code; +} clib_error_t; + +#endif diff --git a/src/vppinfra/cpu.c b/src/vppinfra/cpu.c new file mode 100644 index 00000000..a26d5c9a --- /dev/null +++ b/src/vppinfra/cpu.c @@ -0,0 +1,133 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vppinfra/clib.h> +#include <vppinfra/format.h> +#include <vppinfra/cpu.h> + +#define foreach_x86_cpu_uarch \ + _(0x06, 0x4f, "Broadwell", "Broadwell-EP/EX") \ + _(0x06, 0x3d, "Broadwell", "Broadwell") \ + _(0x06, 0x3f, "Haswell", "Haswell-E") \ + _(0x06, 0x3c, "Haswell", "Haswell") \ + _(0x06, 0x3e, "IvyBridge", "IvyBridge-E/EN/EP") \ + _(0x06, 0x3a, "IvyBridge", "IvyBridge") \ + _(0x06, 0x2a, "SandyBridge", "SandyBridge") \ + _(0x06, 0x2d, "SandyBridge", "SandyBridge-E/EN/EP") \ + _(0x06, 0x25, "Westmere", "Arrandale,Clarksdale") \ + _(0x06, 0x2c, "Westmere", "Westmere-EP/EX,Gulftown") \ + _(0x06, 0x2f, "Westmere", "Westmere-EX") \ + _(0x06, 0x1e, "Nehalem", "Clarksfield,Lynnfield,Jasper Forest") \ + _(0x06, 0x1a, "Nehalem", "Nehalem-EP,Bloomfield)") \ + _(0x06, 0x2e, "Nehalem", "Nehalem-EX") \ + _(0x06, 0x17, "Penryn", "Yorkfield,Wolfdale,Penryn,Harpertown (DP)") \ + _(0x06, 0x1d, "Penryn", "Dunnington (MP)") \ + _(0x06, 0x37, "Atom", "Bay Trail") \ + _(0x06, 0x36, "Atom", "Cedarview") \ + _(0x06, 0x26, "Atom", "Lincroft") \ + _(0x06, 0x1c, "Atom", "Pineview/Silverthorne") + +u8 * +format_cpu_uarch (u8 * s, va_list * args) +{ +#if __x86_64__ + u32 __attribute__ ((unused)) eax, ebx, ecx, edx; + u8 model, family; + + if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0) + return format (s, "unknown (missing cpuid)"); + + model = ((eax >> 4) & 0x0f) | ((eax >> 12) & 0xf0); + family = (eax >> 8) & 0x0f; + +#define _(f,m,a,c) if ((model == m) && (family == f)) return format(s, "%s (%s)", a, c); + foreach_x86_cpu_uarch +#undef _ + return format (s, "unknown (family 0x%02x model 0x%02x)", family, model); + +#else /* ! __x86_64__ */ + return format (s, "unknown"); +#endif +} + +u8 * +format_cpu_model_name (u8 * s, va_list * args) +{ +#if __x86_64__ + u32 __attribute__ ((unused)) eax, ebx, ecx, edx; + u8 *name = 0; + u32 *name_u32; + + if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0) + return format (s, "unknown (missing cpuid)"); + + __get_cpuid (0x80000000, &eax, &ebx, &ecx, &edx); + if (eax < 0x80000004) + return format (s, "unknown (missing ext feature)"); + + vec_validate (name, 48); + name_u32 = (u32 *) name; + + __get_cpuid (0x80000002, &eax, &ebx, &ecx, &edx); + name_u32[0] = eax; + name_u32[1] = ebx; + name_u32[2] = ecx; + name_u32[3] = edx; + + __get_cpuid (0x80000003, &eax, &ebx, &ecx, &edx); + name_u32[4] = eax; + name_u32[5] = ebx; + name_u32[6] = ecx; + name_u32[7] = edx; + + __get_cpuid (0x80000004, &eax, &ebx, &ecx, &edx); + name_u32[8] = eax; + name_u32[9] = ebx; + name_u32[10] = ecx; + name_u32[11] = edx; + + s = format (s, "%s", name); + vec_free (name); + return s; + +#elif defined(__aarch64__) + return format (s, "armv8"); +#else /* ! __x86_64__ */ + return format (s, "unknown"); +#endif +} + +u8 * +format_cpu_flags (u8 * s, va_list * args) +{ +#if defined(__x86_64__) +#define _(flag, func, reg, bit) \ + if (clib_cpu_supports_ ## flag()) \ + s = format (s, #flag " "); + foreach_x86_64_flags return s; +#undef _ +#else /* ! __x86_64__ */ + return format (s, "unknown"); +#endif +} + + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/cpu.h b/src/vppinfra/cpu.h new file mode 100644 index 00000000..9c149f3f --- /dev/null +++ b/src/vppinfra/cpu.h @@ -0,0 +1,112 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef included_clib_cpu_h +#define included_clib_cpu_h + +#include <vppinfra/format.h> + +/* + * multiarchitecture support. Adding new entry will produce + * new graph node function variant optimized for specific cpu + * microarchitecture. + * Order is important for runtime selection, as 1st match wins... + */ + +#if __x86_64__ && CLIB_DEBUG == 0 +#define foreach_march_variant(macro, x) \ + macro(avx2, x, "arch=core-avx2") +#else +#define foreach_march_variant(macro, x) +#endif + + +#if __GNUC__ > 4 && !__clang__ +#define CLIB_CPU_OPTIMIZED __attribute__ ((optimize ("tree-vectorize"))) +#else +#define CLIB_CPU_OPTIMIZED +#endif + + +#define CLIB_MULTIARCH_ARCH_CHECK(arch, fn, tgt) \ + if (clib_cpu_supports_ ## arch()) \ + return & fn ## _ ##arch; + +#define CLIB_MULTIARCH_SELECT_FN(fn,...) \ + __VA_ARGS__ void * fn ## _multiarch_select(void) \ +{ \ + foreach_march_variant(CLIB_MULTIARCH_ARCH_CHECK, fn) \ + return & fn; \ +} + + +#define foreach_x86_64_flags \ +_ (sse3, 1, ecx, 0) \ +_ (ssse3, 1, ecx, 9) \ +_ (sse41, 1, ecx, 19) \ +_ (sse42, 1, ecx, 20) \ +_ (avx, 1, ecx, 28) \ +_ (avx2, 7, ebx, 5) \ +_ (avx512f, 7, ebx, 16) \ +_ (aes, 1, ecx, 25) \ +_ (sha, 7, ebx, 29) \ +_ (invariant_tsc, 0x80000007, edx, 8) + +#if defined(__x86_64__) +#include "cpuid.h" + +static inline int +clib_get_cpuid (const u32 lev, u32 * eax, u32 * ebx, u32 * ecx, u32 * edx) +{ + if ((u32) __get_cpuid_max (0x80000000 & lev, 0) < lev) + return 0; + if (lev == 7) + __cpuid_count (lev, 0, *eax, *ebx, *ecx, *edx); + else + __cpuid (lev, *eax, *ebx, *ecx, *edx); + return 1; +} + + +#define _(flag, func, reg, bit) \ +static inline int \ +clib_cpu_supports_ ## flag() \ +{ \ + u32 __attribute__((unused)) eax, ebx = 0, ecx = 0, edx = 0; \ + clib_get_cpuid (func, &eax, &ebx, &ecx, &edx); \ + \ + return ((reg & (1 << bit)) != 0); \ +} +foreach_x86_64_flags +#undef _ +#else + +#define _(flag, func, reg, bit) \ +static inline int clib_cpu_supports_ ## flag() { return 0; } +foreach_x86_64_flags +#undef _ +#endif +#endif + format_function_t format_cpu_uarch; +format_function_t format_cpu_model_name; +format_function_t format_cpu_flags; + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/crc32.h b/src/vppinfra/crc32.h new file mode 100644 index 00000000..bbfc41cc --- /dev/null +++ b/src/vppinfra/crc32.h @@ -0,0 +1,84 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __included_crc32_h__ +#define __included_crc32_h__ + +#include <vppinfra/clib.h> + +#if __SSE4_2__ +#define clib_crc32c_uses_intrinsics +#include <x86intrin.h> + +static_always_inline u32 +clib_crc32c (u8 * s, int len) +{ + u32 v = 0; + +#if __x86_64__ + for (; len >= 8; len -= 8, s += 8) + v = _mm_crc32_u64 (v, *((u64 *) s)); +#else + /* workaround weird GCC bug when using _mm_crc32_u32 + which happens with -O2 optimization */ + volatile ("":::"memory"); +#endif + + for (; len >= 4; len -= 4, s += 4) + v = _mm_crc32_u32 (v, *((u32 *) s)); + + for (; len >= 2; len -= 2, s += 2) + v = _mm_crc32_u16 (v, *((u16 *) s)); + + for (; len >= 1; len -= 1, s += 1) + v = _mm_crc32_u8 (v, *((u16 *) s)); + + return v; +} + +#elif __ARM_FEATURE_CRC32 +#define clib_crc32c_with_intrinsics +#include <arm_acle.h> + +static_always_inline u32 +clib_crc32c (u8 * s, int len) +{ + u32 v = 0; + + for (; len >= 8; len -= 8, s += 8) + v = __crc32cd (v, *((u64 *) s)); + + for (; len >= 4; len -= 4, s += 4) + v = __crc32cw (v, *((u32 *) s)); + + for (; len >= 2; len -= 2, s += 2) + v = __crc32ch (v, *((u16 *) s)); + + for (; len >= 1; len -= 1, s += 1) + v = __crc32cb (v, *((u8 *) s)); + + return v; +} + +#endif +#endif /* __included_crc32_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/dir.dox b/src/vppinfra/dir.dox new file mode 100644 index 00000000..440c44e8 --- /dev/null +++ b/src/vppinfra/dir.dox @@ -0,0 +1,19 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Copyright (c) 2016 Comcast Cable Communications Management, LLC. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/** @dir + * @brief VPP infrastructure library source. + */ diff --git a/src/vppinfra/dlist.h b/src/vppinfra/dlist.h new file mode 100644 index 00000000..e445b39f --- /dev/null +++ b/src/vppinfra/dlist.h @@ -0,0 +1,156 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#ifndef included_dlist_h +#define included_dlist_h + +#include <stdarg.h> +#include <vppinfra/clib.h> +#include <vppinfra/vec.h> +#include <vppinfra/pool.h> +#include <vppinfra/error.h> +#include <vppinfra/format.h> +#include <vppinfra/cache.h> + +typedef struct +{ + u32 next; + u32 prev; + u32 value; +} dlist_elt_t; + +static inline void +clib_dlist_init (dlist_elt_t * pool, u32 index) +{ + dlist_elt_t *head = pool_elt_at_index (pool, index); + memset (head, 0xFF, sizeof (*head)); +} + +static inline void +clib_dlist_addtail (dlist_elt_t * pool, u32 head_index, u32 new_index) +{ + dlist_elt_t *head = pool_elt_at_index (pool, head_index); + u32 old_last_index; + dlist_elt_t *old_last; + dlist_elt_t *new; + + ASSERT (head->value == ~0); + + new = pool_elt_at_index (pool, new_index); + + if (PREDICT_FALSE (head->next == ~0)) + { + head->next = head->prev = new_index; + new->next = new->prev = head_index; + return; + } + + old_last_index = head->prev; + old_last = pool_elt_at_index (pool, old_last_index); + + new->next = old_last->next; + new->prev = old_last_index; + old_last->next = new_index; + head->prev = new_index; +} + +static inline void +clib_dlist_addhead (dlist_elt_t * pool, u32 head_index, u32 new_index) +{ + dlist_elt_t *head = pool_elt_at_index (pool, head_index); + dlist_elt_t *old_first; + u32 old_first_index; + dlist_elt_t *new; + + ASSERT (head->value == ~0); + + new = pool_elt_at_index (pool, new_index); + + if (PREDICT_FALSE (head->next == ~0)) + { + head->next = head->prev = new_index; + new->next = new->prev = head_index; + return; + } + + old_first_index = head->next; + old_first = pool_elt_at_index (pool, old_first_index); + + new->next = old_first_index; + new->prev = old_first->prev; + old_first->prev = new_index; + head->next = new_index; +} + +static inline void +clib_dlist_remove (dlist_elt_t * pool, u32 index) +{ + dlist_elt_t *elt = pool_elt_at_index (pool, index); + dlist_elt_t *next_elt, *prev_elt; + + /* listhead, not so much */ + ASSERT (elt->value != ~0); + + next_elt = pool_elt_at_index (pool, elt->next); + prev_elt = pool_elt_at_index (pool, elt->prev); + + next_elt->prev = elt->prev; + prev_elt->next = elt->next; + + elt->prev = elt->next = ~0; +} + +static inline u32 +clib_dlist_remove_head (dlist_elt_t * pool, u32 head_index) +{ + dlist_elt_t *head = pool_elt_at_index (pool, head_index); + u32 rv; + + ASSERT (head->value == ~0); + + if (head->next == ~0 || (head->next == head_index)) + return ~0; + + rv = head->next; + clib_dlist_remove (pool, rv); + return rv; +} + +static inline u32 +clib_dlist_remove_tail (dlist_elt_t * pool, u32 head_index) +{ + dlist_elt_t *head = pool_elt_at_index (pool, head_index); + u32 rv; + + ASSERT (head->value == ~0); + + if (head->prev == ~0) + return ~0; + + rv = head->prev; + clib_dlist_remove (pool, rv); + return rv; +} + +#endif /* included_dlist_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/elf.c b/src/vppinfra/elf.c new file mode 100644 index 00000000..931fbccc --- /dev/null +++ b/src/vppinfra/elf.c @@ -0,0 +1,2040 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vppinfra/bitmap.h> +#include <vppinfra/byte_order.h> +#include <vppinfra/error.h> +#include <vppinfra/hash.h> +#include <vppinfra/vec.h> +#include <vppinfra/elf.h> + +always_inline void +elf_swap_first_header (elf_main_t * em, elf_first_header_t * h) +{ + h->architecture = elf_swap_u16 (em, h->architecture); + h->file_type = elf_swap_u16 (em, h->file_type); + h->file_version = elf_swap_u32 (em, h->file_version); +} + +always_inline void +elf_swap_verneed (elf_dynamic_version_need_t * n) +{ +#define _(t,f) n->f = clib_byte_swap_##t (n->f); + foreach_elf_dynamic_version_need_field +#undef _ +} + +always_inline void +elf_swap_verneed_aux (elf_dynamic_version_need_aux_t * n) +{ +#define _(t,f) n->f = clib_byte_swap_##t (n->f); + foreach_elf_dynamic_version_need_aux_field +#undef _ +} + +clib_error_t * +elf_get_section_by_name (elf_main_t * em, char *section_name, + elf_section_t ** result) +{ + uword *p; + + p = hash_get_mem (em->section_by_name, section_name); + if (!p) + return clib_error_return (0, "no such section `%s'", section_name); + + *result = vec_elt_at_index (em->sections, p[0]); + return 0; +} + +elf_section_t * +elf_get_section_by_start_address_no_check (elf_main_t * em, + uword start_address) +{ + uword *p = hash_get (em->section_by_start_address, start_address); + return p ? vec_elt_at_index (em->sections, p[0]) : 0; +} + +clib_error_t * +elf_get_section_by_start_address (elf_main_t * em, uword start_address, + elf_section_t ** result) +{ + elf_section_t *s = + elf_get_section_by_start_address_no_check (em, start_address); + if (!s) + return clib_error_return (0, "no section with address 0x%wx", + start_address); + *result = s; + return 0; +} + +static u8 * +format_elf_section_type (u8 * s, va_list * args) +{ + elf_section_type_t type = va_arg (*args, elf_section_type_t); + char *t = 0; + + switch (type) + { +#define _(f,i) case ELF_SECTION_##f: t = #f; break; + foreach_elf_section_type +#undef _ + } + + if (!t) + s = format (s, "unknown 0x%x", type); + else + s = format (s, "%s", t); + return s; +} + +static u8 * +format_elf_section (u8 * s, va_list * args) +{ + elf_main_t *em = va_arg (*args, elf_main_t *); + elf_section_t *es = va_arg (*args, elf_section_t *); + elf64_section_header_t *h = &es->header; + + if (!h) + return format (s, "%=40s%=10s%=20s%=8s%=16s%=16s%=16s", + "Name", "Index", "Type", "Size", "Align", "Address", + "File offset"); + + s = format (s, "%-40s%10d%=20U%8Lx%16d%16Lx %Lx-%Lx", + elf_section_name (em, es), + es->index, + format_elf_section_type, h->type, + h->file_size, + h->align, + h->exec_address, h->file_offset, h->file_offset + h->file_size); + + if (h->flags != 0) + { +#define _(f,i) \ + if (h->flags & ELF_SECTION_FLAG_##f) s = format (s, " %s", #f); + foreach_elf_section_flag; +#undef _ + } + + return s; +} + +static u8 * +format_elf_segment_type (u8 * s, va_list * args) +{ + elf_segment_type_t type = va_arg (*args, elf_segment_type_t); + char *t = 0; + + switch (type) + { +#define _(f,i) case ELF_SEGMENT_##f: t = #f; break; + foreach_elf_segment_type +#undef _ + } + + if (!t) + s = format (s, "unknown 0x%x", type); + else + s = format (s, "%s", t); + return s; +} + +static u8 * +format_elf_segment (u8 * s, va_list * args) +{ + elf_segment_t *es = va_arg (*args, elf_segment_t *); + elf64_segment_header_t *h = &es->header; + + if (!h) + return format (s, "%=16s%=16s%=16s%=16s", + "Type", "Virt. Address", "Phys. Address", "Size"); + + s = format (s, "%=16U%16Lx%16Lx%16Lx%16Lx", + format_elf_segment_type, h->type, + h->virtual_address, + h->physical_address, h->memory_size, h->file_offset); + + if (h->flags != 0) + { +#define _(f,i) \ + if (h->flags & ELF_SEGMENT_FLAG_##f) s = format (s, " %s", #f); + foreach_elf_segment_flag; +#undef _ + } + + return s; +} + +static u8 * +format_elf_symbol_binding_and_type (u8 * s, va_list * args) +{ + int bt = va_arg (*args, int); + int b, t; + char *type_string = 0; + char *binding_string = 0; + + switch ((b = ((bt >> 4) & 0xf))) + { +#define _(f,n) case n: binding_string = #f; break; + foreach_elf_symbol_binding; +#undef _ + default: + break; + } + + switch ((t = ((bt >> 0) & 0xf))) + { +#define _(f,n) case n: type_string = #f; break; + foreach_elf_symbol_type; +#undef _ + default: + break; + } + + if (binding_string) + s = format (s, "%s", binding_string); + else + s = format (s, "binding 0x%x", b); + + if (type_string) + s = format (s, " %s", type_string); + else + s = format (s, " type 0x%x", t); + + return s; +} + +static u8 * +format_elf_symbol_visibility (u8 * s, va_list * args) +{ + int visibility = va_arg (*args, int); + char *t = 0; + + switch (visibility) + { +#define _(f,n) case n: t = #f; break; + foreach_elf_symbol_visibility +#undef _ + } + + if (t) + return format (s, "%s", t); + else + return format (s, "unknown 0x%x", visibility); +} + +static u8 * +format_elf_symbol_section_name (u8 * s, va_list * args) +{ + elf_main_t *em = va_arg (*args, elf_main_t *); + int si = va_arg (*args, int); + char *t = 0; + + if (si < vec_len (em->sections)) + { + elf_section_t *es = vec_elt_at_index (em->sections, si); + return format (s, "%s", elf_section_name (em, es)); + } + + if (si >= ELF_SYMBOL_SECTION_RESERVED_LO + && si <= ELF_SYMBOL_SECTION_RESERVED_HI) + { + switch (si) + { +#define _(f,n) case n: t = #f; break; + foreach_elf_symbol_reserved_section_index +#undef _ + default: + break; + } + } + + if (t) + return format (s, "%s", t); + else + return format (s, "unknown 0x%x", si); +} + +u8 * +format_elf_symbol (u8 * s, va_list * args) +{ + elf_main_t *em = va_arg (*args, elf_main_t *); + elf_symbol_table_t *t = va_arg (*args, elf_symbol_table_t *); + elf64_symbol_t *sym = va_arg (*args, elf64_symbol_t *); + + if (!sym) + return format (s, "%=32s%=16s%=16s%=16s%=16s%=16s", + "Symbol", "Size", "Value", "Type", "Visibility", + "Section"); + + s = format (s, "%-32s%16Ld%16Lx%=16U%=16U%U", + elf_symbol_name (t, sym), + sym->size, sym->value, + format_elf_symbol_binding_and_type, sym->binding_and_type, + format_elf_symbol_visibility, sym->visibility, + format_elf_symbol_section_name, em, sym->section_index); + + return s; +} + +static u8 * +format_elf_relocation_type (u8 * s, va_list * args) +{ + elf_main_t *em = va_arg (*args, elf_main_t *); + int type = va_arg (*args, int); + char *t = 0; + + switch (em->first_header.architecture) + { +#define _(f,i) [i] = #f, + + case ELF_ARCH_X86_64: + { + static char *tab[] = { + foreach_elf_x86_64_relocation_type + }; + +#undef _ + if (type < ARRAY_LEN (tab)) + t = tab[type]; + break; + } + + default: + break; + } + + if (!t) + s = format (s, "0x%02x", type); + else + s = format (s, "%s", t); + + return s; +} + +static u8 * +format_elf_relocation (u8 * s, va_list * args) +{ + elf_main_t *em = va_arg (*args, elf_main_t *); + elf_relocation_with_addend_t *r = + va_arg (*args, elf_relocation_with_addend_t *); + elf_symbol_table_t *t; + elf64_symbol_t *sym; + + if (!r) + return format (s, "%=16s%=16s%=16s", "Address", "Type", "Symbol"); + + t = vec_elt_at_index (em->symbol_tables, 0); + sym = vec_elt_at_index (t->symbols, r->symbol_and_type >> 32); + + s = format (s, "%16Lx%16U", + r->address, + format_elf_relocation_type, em, r->symbol_and_type & 0xff); + + if (sym->section_index != 0) + { + elf_section_t *es; + es = vec_elt_at_index (em->sections, sym->section_index); + s = format (s, " (section %s)", elf_section_name (em, es)); + } + + if (sym->name != 0) + s = format (s, " %s", elf_symbol_name (t, sym)); + + { + i64 a = r->addend; + if (a != 0) + s = format (s, " %c 0x%Lx", a > 0 ? '+' : '-', a > 0 ? a : -a); + } + + return s; +} + +static u8 * +format_elf_dynamic_entry_type (u8 * s, va_list * args) +{ + u32 type = va_arg (*args, u32); + char *t = 0; + switch (type) + { +#define _(f,n) case n: t = #f; break; + foreach_elf_dynamic_entry_type; +#undef _ + default: + break; + } + if (t) + return format (s, "%s", t); + else + return format (s, "unknown 0x%x", type); +} + +static u8 * +format_elf_dynamic_entry (u8 * s, va_list * args) +{ + elf_main_t *em = va_arg (*args, elf_main_t *); + elf64_dynamic_entry_t *e = va_arg (*args, elf64_dynamic_entry_t *); + + if (!e) + return format (s, "%=40s%=16s", "Type", "Data"); + + s = format (s, "%=40U", format_elf_dynamic_entry_type, (u32) e->type); + switch (e->type) + { + case ELF_DYNAMIC_ENTRY_NEEDED_LIBRARY: + case ELF_DYNAMIC_ENTRY_RPATH: + case ELF_DYNAMIC_ENTRY_RUN_PATH: + s = format (s, "%s", em->dynamic_string_table + e->data); + break; + + case ELF_DYNAMIC_ENTRY_INIT_FUNCTION: + case ELF_DYNAMIC_ENTRY_FINI_FUNCTION: + case ELF_DYNAMIC_ENTRY_SYMBOL_HASH: + case ELF_DYNAMIC_ENTRY_GNU_HASH: + case ELF_DYNAMIC_ENTRY_STRING_TABLE: + case ELF_DYNAMIC_ENTRY_SYMBOL_TABLE: + case ELF_DYNAMIC_ENTRY_PLT_GOT: + case ELF_DYNAMIC_ENTRY_PLT_RELOCATION_ADDRESS: + case ELF_DYNAMIC_ENTRY_RELA_ADDRESS: + case ELF_DYNAMIC_ENTRY_VERSION_NEED: + case ELF_DYNAMIC_ENTRY_VERSYM: + { + elf_section_t *es = + elf_get_section_by_start_address_no_check (em, e->data); + if (es) + s = format (s, "section %s", elf_section_name (em, es)); + else + s = format (s, "0x%Lx", e->data); + break; + } + + default: + s = format (s, "0x%Lx", e->data); + break; + } + + return s; +} + +static u8 * +format_elf_architecture (u8 * s, va_list * args) +{ + int a = va_arg (*args, int); + char *t; + + switch (a) + { +#define _(f,n) case n: t = #f; break; + foreach_elf_architecture; +#undef _ + default: + return format (s, "unknown 0x%x", a); + } + + return format (s, "%s", t); +} + +static u8 * +format_elf_abi (u8 * s, va_list * args) +{ + int a = va_arg (*args, int); + char *t; + + switch (a) + { +#define _(f,n) case n: t = #f; break; + foreach_elf_abi; +#undef _ + default: + return format (s, "unknown 0x%x", a); + } + + return format (s, "%s", t); +} + +static u8 * +format_elf_file_class (u8 * s, va_list * args) +{ + int a = va_arg (*args, int); + char *t; + + switch (a) + { +#define _(f) case ELF_##f: t = #f; break; + foreach_elf_file_class; +#undef _ + default: + return format (s, "unknown 0x%x", a); + } + + return format (s, "%s", t); +} + +static u8 * +format_elf_file_type (u8 * s, va_list * args) +{ + int a = va_arg (*args, int); + char *t; + + if (a >= ELF_ARCH_SPECIFIC_LO && a <= ELF_ARCH_SPECIFIC_HI) + return format (s, "arch-specific 0x%x", a - ELF_ARCH_SPECIFIC_LO); + + if (a >= ELF_OS_SPECIFIC_LO && a <= ELF_OS_SPECIFIC_HI) + return format (s, "os-specific 0x%x", a - ELF_OS_SPECIFIC_LO); + + switch (a) + { +#define _(f,n) case n: t = #f; break; + foreach_elf_file_type; +#undef _ + default: + return format (s, "unknown 0x%x", a); + } + + return format (s, "%s", t); +} + +static u8 * +format_elf_data_encoding (u8 * s, va_list * args) +{ + int a = va_arg (*args, int); + char *t; + + switch (a) + { +#define _(f) case ELF_##f: t = #f; break; + foreach_elf_data_encoding; +#undef _ + default: + return format (s, "unknown 0x%x", a); + } + + return format (s, "%s", t); +} + +static int +elf_section_offset_compare (void *a1, void *a2) +{ + elf_section_t *s1 = a1; + elf_section_t *s2 = a2; + + return ((i64) s1->header.file_offset - (i64) s2->header.file_offset); +} + +static int +elf_segment_va_compare (void *a1, void *a2) +{ + elf_segment_t *s1 = a1; + elf_segment_t *s2 = a2; + + return ((i64) s1->header.virtual_address - + (i64) s2->header.virtual_address); +} + +u8 * +format_elf_main (u8 * s, va_list * args) +{ + elf_main_t *em = va_arg (*args, elf_main_t *); + u32 verbose = va_arg (*args, u32); + elf64_file_header_t *fh = &em->file_header; + + s = + format (s, + "File header: machine: %U, file type/class %U/%U, data-encoding: %U, abi: %U version %d\n", + format_elf_architecture, em->first_header.architecture, + format_elf_file_type, em->first_header.file_type, + format_elf_file_class, em->first_header.file_class, + format_elf_data_encoding, em->first_header.data_encoding, + format_elf_abi, em->first_header.abi, + em->first_header.abi_version); + + s = format (s, " entry 0x%Lx, arch-flags 0x%x", + em->file_header.entry_point, em->file_header.flags); + + if (em->interpreter) + s = format (s, "\n interpreter: %s", em->interpreter); + + { + elf_section_t *h, *copy; + + copy = 0; + vec_foreach (h, em->sections) if (h->header.type != ~0) + vec_add1 (copy, h[0]); + + vec_sort_with_function (copy, elf_section_offset_compare); + + s = format (s, "\nSections %d at file offset 0x%Lx-0x%Lx:\n", + fh->section_header_count, + fh->section_header_file_offset, + fh->section_header_file_offset + + (u64) fh->section_header_count * fh->section_header_size); + s = format (s, "%U\n", format_elf_section, em, 0); + vec_foreach (h, copy) s = format (s, "%U\n", format_elf_section, em, h); + + vec_free (copy); + } + + { + elf_segment_t *h, *copy; + + copy = 0; + vec_foreach (h, em->segments) + if (h->header.type != ELF_SEGMENT_UNUSED && h->header.type != ~0) + vec_add1 (copy, h[0]); + + /* Sort segments by address. */ + vec_sort_with_function (copy, elf_segment_va_compare); + + s = format (s, "\nSegments: %d at file offset 0x%Lx-0x%Lx:\n", + fh->segment_header_count, + fh->segment_header_file_offset, + (u64) fh->segment_header_file_offset + + (u64) fh->segment_header_count * + (u64) fh->segment_header_size); + + s = format (s, "%U\n", format_elf_segment, 0); + vec_foreach (h, copy) s = format (s, "%U\n", format_elf_segment, h); + + vec_free (copy); + } + + if ((verbose & FORMAT_ELF_MAIN_SYMBOLS) && vec_len (em->symbol_tables) > 0) + { + elf_symbol_table_t *t; + elf64_symbol_t *sym; + elf_section_t *es; + + vec_foreach (t, em->symbol_tables) + { + es = vec_elt_at_index (em->sections, t->section_index); + s = + format (s, "\nSymbols for section %s:\n", + elf_section_name (em, es)); + + s = format (s, "%U\n", format_elf_symbol, em, 0, 0); + vec_foreach (sym, t->symbols) + s = format (s, "%U\n", format_elf_symbol, em, t, sym); + } + } + + if ((verbose & FORMAT_ELF_MAIN_RELOCATIONS) + && vec_len (em->relocation_tables) > 0) + { + elf_relocation_table_t *t; + elf_relocation_with_addend_t *r; + elf_section_t *es; + + vec_foreach (t, em->relocation_tables) + { + es = vec_elt_at_index (em->sections, t->section_index); + r = t->relocations; + s = format (s, "\nRelocations for section %s:\n", + elf_section_name (em, es)); + + s = format (s, "%U\n", format_elf_relocation, em, 0); + vec_foreach (r, t->relocations) + { + s = format (s, "%U\n", format_elf_relocation, em, r); + } + } + } + + if ((verbose & FORMAT_ELF_MAIN_DYNAMIC) + && vec_len (em->dynamic_entries) > 0) + { + elf64_dynamic_entry_t *es, *e; + s = format (s, "\nDynamic linker information:\n"); + es = vec_dup (em->dynamic_entries); + s = format (s, "%U\n", format_elf_dynamic_entry, em, 0); + vec_foreach (e, es) + s = format (s, "%U\n", format_elf_dynamic_entry, em, e); + } + + return s; +} + +static void +elf_parse_segments (elf_main_t * em, void *data) +{ + void *d = data + em->file_header.segment_header_file_offset; + uword n = em->file_header.segment_header_count; + uword i; + + vec_resize (em->segments, n); + + for (i = 0; i < n; i++) + { + em->segments[i].index = i; + + if (em->first_header.file_class == ELF_64BIT) + { + elf64_segment_header_t *h = d; +#define _(t,f) em->segments[i].header.f = elf_swap_##t (em, h->f); + foreach_elf64_segment_header +#undef _ + d = (h + 1); + } + else + { + elf32_segment_header_t *h = d; +#define _(t,f) em->segments[i].header.f = elf_swap_##t (em, h->f); + foreach_elf32_segment_header +#undef _ + d = (h + 1); + } + } +} + +static void +elf_parse_sections (elf_main_t * em, void *data) +{ + elf64_file_header_t *fh = &em->file_header; + elf_section_t *s; + void *d = data + fh->section_header_file_offset; + uword n = fh->section_header_count; + uword i; + + vec_resize (em->sections, n); + + for (i = 0; i < n; i++) + { + s = em->sections + i; + + s->index = i; + + if (em->first_header.file_class == ELF_64BIT) + { + elf64_section_header_t *h = d; +#define _(t,f) em->sections[i].header.f = elf_swap_##t (em, h->f); + foreach_elf64_section_header +#undef _ + d = (h + 1); + } + else + { + elf32_section_header_t *h = d; +#define _(t,f) em->sections[i].header.f = elf_swap_##t (em, h->f); + foreach_elf32_section_header +#undef _ + d = (h + 1); + } + + if (s->header.type != ELF_SECTION_NO_BITS) + vec_add (s->contents, data + s->header.file_offset, + s->header.file_size); + } + + s = vec_elt_at_index (em->sections, fh->section_header_string_table_index); + + em->section_by_name + = hash_create_string ( /* # elts */ vec_len (em->sections), + /* sizeof of value */ sizeof (uword)); + + vec_foreach (s, em->sections) + { + hash_set_mem (em->section_by_name, + elf_section_name (em, s), s - em->sections); + hash_set (em->section_by_start_address, + s->header.exec_address, s - em->sections); + } +} + +static void +add_symbol_table (elf_main_t * em, elf_section_t * s) +{ + elf_symbol_table_t *tab; + elf32_symbol_t *sym32; + elf64_symbol_t *sym64; + uword i; + + if (s->header.type == ELF_SECTION_DYNAMIC_SYMBOL_TABLE) + em->dynamic_symbol_table_index = vec_len (em->symbol_tables); + + vec_add2 (em->symbol_tables, tab, 1); + + tab->section_index = s->index; + + if (em->first_header.file_class == ELF_64BIT) + { + tab->symbols = + elf_get_section_contents (em, s - em->sections, + sizeof (tab->symbols[0])); + for (i = 0; i < vec_len (tab->symbols); i++) + { +#define _(t,f) tab->symbols[i].f = elf_swap_##t (em, tab->symbols[i].f); + foreach_elf64_symbol_header; +#undef _ + } + } + else + { + sym32 = + elf_get_section_contents (em, s - em->sections, sizeof (sym32[0])); + vec_clone (tab->symbols, sym32); + for (i = 0; i < vec_len (tab->symbols); i++) + { +#define _(t,f) tab->symbols[i].f = elf_swap_##t (em, sym32[i].f); + foreach_elf32_symbol_header; +#undef _ + } + } + + if (s->header.link == 0) + return; + + tab->string_table = + elf_get_section_contents (em, s->header.link, + sizeof (tab->string_table[0])); + tab->symbol_by_name = + hash_create_string ( /* # elts */ vec_len (tab->symbols), + /* sizeof of value */ sizeof (uword)); + + vec_foreach (sym64, tab->symbols) + { + if (sym64->name != 0) + hash_set_mem (tab->symbol_by_name, + tab->string_table + sym64->name, sym64 - tab->symbols); + } +} + +static void +add_relocation_table (elf_main_t * em, elf_section_t * s) +{ + uword has_addend = s->header.type == ELF_SECTION_RELOCATION_ADD; + elf_relocation_table_t *t; + uword i; + + vec_add2 (em->relocation_tables, t, 1); + t->section_index = s - em->sections; + + if (em->first_header.file_class == ELF_64BIT) + { + elf64_relocation_t *r, *rs; + + rs = elf_get_section_contents (em, t->section_index, + sizeof (rs[0]) + + has_addend * sizeof (rs->addend[0])); + + if (em->need_byte_swap) + { + r = rs; + for (i = 0; i < vec_len (r); i++) + { + r->address = elf_swap_u64 (em, r->address); + r->symbol_and_type = elf_swap_u32 (em, r->symbol_and_type); + if (has_addend) + r->addend[0] = elf_swap_u64 (em, r->addend[0]); + r = elf_relocation_next (r, s->header.type); + } + } + + vec_resize (t->relocations, vec_len (rs)); + clib_memcpy (t->relocations, rs, vec_bytes (t->relocations)); + vec_free (rs); + } + else + { + elf_relocation_with_addend_t *r; + elf32_relocation_t *r32, *r32s; + + r32s = elf_get_section_contents (em, t->section_index, + sizeof (r32s[0]) + + has_addend * sizeof (r32s->addend[0])); + vec_resize (t->relocations, vec_len (r32s)); + + r32 = r32s; + vec_foreach (r, t->relocations) + { + r->address = elf_swap_u32 (em, r32->address); + r->symbol_and_type = elf_swap_u32 (em, r->symbol_and_type); + r->addend = has_addend ? elf_swap_u32 (em, r32->addend[0]) : 0; + r32 = elf_relocation_next (r32, s->header.type); + } + + vec_free (r32s); + } +} + +void +elf_parse_symbols (elf_main_t * em) +{ + elf_section_t *s; + + /* No need to parse symbols twice. */ + if (em->parsed_symbols) + return; + em->parsed_symbols = 1; + + vec_foreach (s, em->sections) + { + switch (s->header.type) + { + case ELF_SECTION_SYMBOL_TABLE: + case ELF_SECTION_DYNAMIC_SYMBOL_TABLE: + add_symbol_table (em, s); + break; + + case ELF_SECTION_RELOCATION_ADD: + case ELF_SECTION_RELOCATION: + add_relocation_table (em, s); + break; + + default: + break; + } + } +} + +void +elf_set_dynamic_entries (elf_main_t * em) +{ + uword i; + + /* Start address for sections may have changed. */ + { + elf64_dynamic_entry_t *e; + + vec_foreach (e, em->dynamic_entries) + { + switch (e->type) + { + case ELF_DYNAMIC_ENTRY_INIT_FUNCTION: + case ELF_DYNAMIC_ENTRY_FINI_FUNCTION: + case ELF_DYNAMIC_ENTRY_SYMBOL_HASH: + case ELF_DYNAMIC_ENTRY_GNU_HASH: + case ELF_DYNAMIC_ENTRY_STRING_TABLE: + case ELF_DYNAMIC_ENTRY_SYMBOL_TABLE: + case ELF_DYNAMIC_ENTRY_PLT_GOT: + case ELF_DYNAMIC_ENTRY_PLT_RELOCATION_ADDRESS: + case ELF_DYNAMIC_ENTRY_RELA_ADDRESS: + case ELF_DYNAMIC_ENTRY_VERSION_NEED: + case ELF_DYNAMIC_ENTRY_VERSYM: + { + elf_section_t *es = + elf_get_section_by_start_address_no_check (em, e->data); + /* If section is not found just leave e->data alone. */ + if (es) + e->data = es->header.exec_address; + break; + } + + default: + break; + } + } + } + + if (em->first_header.file_class == ELF_64BIT) + { + elf64_dynamic_entry_t *e, *es; + + es = em->dynamic_entries; + if (em->need_byte_swap) + { + es = vec_dup (es); + vec_foreach (e, es) + { + e->type = elf_swap_u64 (em, e->type); + e->data = elf_swap_u64 (em, e->data); + } + } + + elf_set_section_contents (em, em->dynamic_section_index, es, + vec_bytes (es)); + if (es != em->dynamic_entries) + vec_free (es); + } + else + { + elf32_dynamic_entry_t *es; + + vec_clone (es, em->dynamic_entries); + if (em->need_byte_swap) + { + for (i = 0; i < vec_len (es); i++) + { + es[i].type = elf_swap_u32 (em, em->dynamic_entries[i].type); + es[i].data = elf_swap_u32 (em, em->dynamic_entries[i].data); + } + } + + elf_set_section_contents (em, em->dynamic_section_index, es, + vec_bytes (es)); + vec_free (es); + } +} + +clib_error_t * +elf_parse (elf_main_t * em, void *data, uword data_bytes) +{ + elf_first_header_t *h = data; + elf64_file_header_t *fh = &em->file_header; + clib_error_t *error = 0; + + { + char *save = em->file_name; + memset (em, 0, sizeof (em[0])); + em->file_name = save; + } + + em->first_header = h[0]; + em->need_byte_swap = + CLIB_ARCH_IS_BIG_ENDIAN != (h->data_encoding == + ELF_TWOS_COMPLEMENT_BIG_ENDIAN); + elf_swap_first_header (em, &em->first_header); + + if (!(h->magic[0] == 0x7f + && h->magic[1] == 'E' && h->magic[2] == 'L' && h->magic[3] == 'F')) + return clib_error_return (0, "`%s': bad magic", em->file_name); + + if (h->file_class == ELF_64BIT) + { + elf64_file_header_t *h64 = (void *) (h + 1); +#define _(t,f) fh->f = elf_swap_##t (em, h64->f); + foreach_elf64_file_header +#undef _ + } + else + { + elf32_file_header_t *h32 = (void *) (h + 1); + +#define _(t,f) fh->f = elf_swap_##t (em, h32->f); + foreach_elf32_file_header +#undef _ + } + + elf_parse_segments (em, data); + elf_parse_sections (em, data); + + /* Figure which sections are contained in each segment. */ + { + elf_segment_t *g; + elf_section_t *s; + vec_foreach (g, em->segments) + { + u64 g_lo, g_hi; + u64 s_lo, s_hi; + + if (g->header.memory_size == 0) + continue; + + g_lo = g->header.virtual_address; + g_hi = g_lo + g->header.memory_size; + + vec_foreach (s, em->sections) + { + s_lo = s->header.exec_address; + s_hi = s_lo + s->header.file_size; + + if (s_lo >= g_lo && s_hi <= g_hi) + { + g->section_index_bitmap = + clib_bitmap_ori (g->section_index_bitmap, s->index); + s->segment_index_bitmap = + clib_bitmap_ori (s->segment_index_bitmap, g->index); + } + } + } + } + + return error; +} + +#ifdef CLIB_UNIX + +static void +add_dynamic_entries (elf_main_t * em, elf_section_t * s) +{ + uword i; + + /* Can't have more than one dynamic section. */ + ASSERT (em->dynamic_section_index == 0); + em->dynamic_section_index = s->index; + + if (em->first_header.file_class == ELF_64BIT) + { + elf64_dynamic_entry_t *e; + + e = elf_get_section_contents (em, s - em->sections, sizeof (e[0])); + if (em->need_byte_swap) + for (i = 0; i < vec_len (e); i++) + { + e[i].type = elf_swap_u64 (em, e[i].type); + e[i].data = elf_swap_u64 (em, e[i].data); + } + + em->dynamic_entries = e; + } + else + { + elf32_dynamic_entry_t *e; + + e = elf_get_section_contents (em, s - em->sections, sizeof (e[0])); + vec_clone (em->dynamic_entries, e); + if (em->need_byte_swap) + for (i = 0; i < vec_len (e); i++) + { + em->dynamic_entries[i].type = elf_swap_u32 (em, e[i].type); + em->dynamic_entries[i].data = elf_swap_u32 (em, e[i].data); + } + + vec_free (e); + } +} + +static void +byte_swap_verneed (elf_main_t * em, elf_dynamic_version_need_union_t * vus) +{ + uword *entries_swapped = 0; + uword i, j; + + for (i = 0; i < vec_len (vus); i++) + { + elf_dynamic_version_need_union_t *n = vec_elt_at_index (vus, i); + elf_dynamic_version_need_union_t *a; + + if (clib_bitmap_get (entries_swapped, i)) + continue; + + elf_swap_verneed (&n->need); + entries_swapped = clib_bitmap_set (entries_swapped, i, 1); + + if (n->need.first_aux_offset != 0) + { + ASSERT (n->need.first_aux_offset % sizeof (n[0]) == 0); + j = i + (n->need.first_aux_offset / sizeof (n[0])); + while (1) + { + a = vec_elt_at_index (vus, j); + if (!clib_bitmap_get (entries_swapped, j)) + { + entries_swapped = clib_bitmap_set (entries_swapped, j, 1); + elf_swap_verneed_aux (&a->aux); + } + if (a->aux.next_offset == 0) + break; + ASSERT (a->aux.next_offset % sizeof (a->aux) == 0); + j += (a->aux.next_offset / sizeof (a->aux)); + } + } + } + + clib_bitmap_free (entries_swapped); +} + +static void set_dynamic_verneed (elf_main_t * em) __attribute__ ((unused)); +static void +set_dynamic_verneed (elf_main_t * em) +{ + elf_dynamic_version_need_union_t *vus = em->verneed; + + if (em->need_byte_swap) + { + vus = vec_dup (vus); + byte_swap_verneed (em, vus); + } + + elf_set_section_contents (em, em->verneed_section_index, vus, + vec_bytes (vus)); + if (vus != em->verneed) + vec_free (vus); +} + +static void +set_symbol_table (elf_main_t * em, u32 table_index) __attribute__ ((unused)); +static void +set_symbol_table (elf_main_t * em, u32 table_index) +{ + elf_symbol_table_t *tab = vec_elt_at_index (em->symbol_tables, table_index); + + if (em->first_header.file_class == ELF_64BIT) + { + elf64_symbol_t *s, *syms; + + syms = vec_dup (tab->symbols); + vec_foreach (s, syms) + { +#define _(t,f) s->f = elf_swap_##t (em, s->f); + foreach_elf64_symbol_header; +#undef _ + } + + elf_set_section_contents (em, tab->section_index, + syms, vec_bytes (syms)); + } + else + { + elf32_symbol_t *syms; + uword i; + vec_clone (syms, tab->symbols); + for (i = 0; i < vec_len (tab->symbols); i++) + { +#define _(t,f) syms[i].f = elf_swap_##t (em, tab->symbols[i].f); + foreach_elf32_symbol_header; +#undef _ + } + + elf_set_section_contents (em, tab->section_index, + syms, vec_bytes (syms)); + } +} + +static char * +elf_find_interpreter (elf_main_t * em, void *data) +{ + elf_segment_t *g; + elf_section_t *s; + uword *p; + + vec_foreach (g, em->segments) + { + if (g->header.type == ELF_SEGMENT_INTERP) + break; + } + + if (g >= vec_end (em->segments)) + return 0; + + p = hash_get (em->section_by_start_address, g->header.virtual_address); + if (!p) + return 0; + + s = vec_elt_at_index (em->sections, p[0]); + return (char *) vec_dup (s->contents); +} + +static void * +elf_get_section_contents_with_starting_address (elf_main_t * em, + uword start_address, + uword elt_size, + u32 * section_index_result) +{ + elf_section_t *s = 0; + clib_error_t *error; + + error = elf_get_section_by_start_address (em, start_address, &s); + if (error) + { + clib_error_report (error); + return 0; + } + + if (section_index_result) + *section_index_result = s->index; + + return elf_get_section_contents (em, s->index, elt_size); +} + +static void +elf_parse_dynamic (elf_main_t * em) +{ + elf_section_t *s; + elf64_dynamic_entry_t *e; + + vec_foreach (s, em->sections) + { + switch (s->header.type) + { + case ELF_SECTION_DYNAMIC: + add_dynamic_entries (em, s); + break; + + default: + break; + } + } + + em->dynamic_string_table_section_index = ~0; + em->dynamic_string_table = 0; + + vec_foreach (e, em->dynamic_entries) + { + switch (e->type) + { + case ELF_DYNAMIC_ENTRY_STRING_TABLE: + ASSERT (vec_len (em->dynamic_string_table) == 0); + em->dynamic_string_table + = + elf_get_section_contents_with_starting_address (em, e->data, + sizeof (u8), + &em-> + dynamic_string_table_section_index); + break; + + case ELF_DYNAMIC_ENTRY_SYMBOL_TABLE: + { + elf_section_t *s = 0; + clib_error_t *error; + + error = elf_get_section_by_start_address (em, e->data, &s); + if (error) + { + clib_error_report (error); + return; + } + + em->dynamic_symbol_table_section_index = s - em->sections; + } + break; + + case ELF_DYNAMIC_ENTRY_VERSYM: + em->versym + = + elf_get_section_contents_with_starting_address (em, e->data, + sizeof (em->versym + [0]), + &em-> + versym_section_index); + if (em->need_byte_swap) + { + uword i; + for (i = 0; i < vec_len (em->versym); i++) + em->versym[i] = clib_byte_swap_u16 (em->versym[i]); + } + break; + + case ELF_DYNAMIC_ENTRY_VERSION_NEED: + em->verneed + = + elf_get_section_contents_with_starting_address (em, e->data, + sizeof (em->verneed + [0]), + &em-> + verneed_section_index); + if (em->need_byte_swap) + byte_swap_verneed (em, em->verneed); + break; + + default: + break; + } + } +} + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +clib_error_t * +elf_read_file (elf_main_t * em, char *file_name) +{ + int fd; + struct stat fd_stat; + uword mmap_length = 0; + void *data = 0; + clib_error_t *error = 0; + + elf_main_init (em); + + fd = open (file_name, 0); + if (fd < 0) + { + error = clib_error_return_unix (0, "open `%s'", file_name); + goto done; + } + + if (fstat (fd, &fd_stat) < 0) + { + error = clib_error_return_unix (0, "fstat `%s'", file_name); + goto done; + } + mmap_length = fd_stat.st_size; + + data = mmap (0, mmap_length, PROT_READ, MAP_SHARED, fd, /* offset */ 0); + if (~pointer_to_uword (data) == 0) + { + error = clib_error_return_unix (0, "mmap `%s'", file_name); + goto done; + } + + em->file_name = file_name; + + error = elf_parse (em, data, mmap_length); + if (error) + goto done; + + elf_parse_symbols (em); + elf_parse_dynamic (em); + + em->interpreter = elf_find_interpreter (em, data); + + munmap (data, mmap_length); + close (fd); + + return /* no error */ 0; + +done: + elf_main_free (em); + if (fd >= 0) + close (fd); + if (data) + munmap (data, mmap_length); + return error; +} + +typedef struct +{ + u8 *new_table; + + u8 *old_table; + + uword *hash; +} string_table_builder_t; + +static u32 +string_table_add_name (string_table_builder_t * b, u8 * n) +{ + uword *p, i, j, l; + + p = hash_get_mem (b->hash, n); + if (p) + return p[0]; + + l = strlen ((char *) n); + i = vec_len (b->new_table); + vec_add (b->new_table, n, l + 1); + + for (j = 0; j <= l; j++) + { + if (j > 0) + { + p = hash_get_mem (b->hash, n + j); + + /* Sub-string already in table? */ + if (p) + continue; + } + + hash_set_mem (b->hash, n + j, i + j); + } + + return i; +} + +static u32 string_table_add_name_index (string_table_builder_t * b, u32 index) + __attribute__ ((unused)); +static u32 +string_table_add_name_index (string_table_builder_t * b, u32 index) +{ + u8 *n = b->old_table + index; + return string_table_add_name (b, n); +} + +static void string_table_init (string_table_builder_t * b, u8 * old_table) + __attribute__ ((unused)); +static void +string_table_init (string_table_builder_t * b, u8 * old_table) +{ + memset (b, 0, sizeof (b[0])); + b->old_table = old_table; + b->hash = hash_create_string (0, sizeof (uword)); +} + +static u8 *string_table_done (string_table_builder_t * b) + __attribute__ ((unused)); +static u8 * +string_table_done (string_table_builder_t * b) +{ + hash_free (b->hash); + return b->new_table; +} + +static void +layout_sections (elf_main_t * em) +{ + elf_section_t *s; + u32 n_sections_with_changed_exec_address = 0; + u32 *deferred_symbol_and_string_sections = 0; + u32 n_deleted_sections = 0; + /* note: rebuild is always zero. Intent lost in the sands of time */ +#if 0 + int rebuild = 0; + + /* Re-build section string table (sections may have been deleted). */ + if (rebuild) + { + u8 *st = 0; + + vec_foreach (s, em->sections) + { + u8 *name; + if (s->header.type == ~0) + continue; + name = elf_section_name (em, s); + s->header.name = vec_len (st); + vec_add (st, name, strlen ((char *) name) + 1); + } + + s = + vec_elt_at_index (em->sections, + em->file_header.section_header_string_table_index); + + vec_free (s->contents); + s->contents = st; + } + + /* Re-build dynamic string table. */ + if (rebuild && em->dynamic_string_table_section_index != ~0) + { + string_table_builder_t b; + + string_table_init (&b, em->dynamic_string_table); + + /* Add all dynamic symbols. */ + { + elf_symbol_table_t *symtab; + elf64_symbol_t *sym; + + symtab = + vec_elt_at_index (em->symbol_tables, + em->dynamic_symbol_table_index); + vec_foreach (sym, symtab->symbols) + { + u8 *name = elf_symbol_name (symtab, sym); + sym->name = string_table_add_name (&b, name); + } + + set_symbol_table (em, em->dynamic_symbol_table_index); + } + + /* Add all dynamic entries. */ + { + elf64_dynamic_entry_t *e; + + vec_foreach (e, em->dynamic_entries) + { + switch (e->type) + { + case ELF_DYNAMIC_ENTRY_NEEDED_LIBRARY: + case ELF_DYNAMIC_ENTRY_RPATH: + case ELF_DYNAMIC_ENTRY_RUN_PATH: + e->data = string_table_add_name_index (&b, e->data); + break; + } + } + } + + /* Add all version needs. */ + if (vec_len (em->verneed) > 0) + { + elf_dynamic_version_need_union_t *n, *a; + + n = em->verneed; + while (1) + { + n->need.file_name_offset = + string_table_add_name_index (&b, n->need.file_name_offset); + + if (n->need.first_aux_offset != 0) + { + a = n + n->need.first_aux_offset / sizeof (n[0]); + while (1) + { + a->aux.name = + string_table_add_name_index (&b, a->aux.name); + if (a->aux.next_offset == 0) + break; + a += a->aux.next_offset / sizeof (a[0]); + } + } + + if (n->need.next_offset == 0) + break; + + n += n->need.next_offset / sizeof (n[0]); + } + + set_dynamic_verneed (em); + } + + s = + vec_elt_at_index (em->sections, + em->dynamic_string_table_section_index); + + vec_free (s->contents); + s->contents = string_table_done (&b); + } +#endif /* dead code */ + + /* Figure file offsets and exec addresses for sections. */ + { + u64 exec_address = 0, file_offset = 0; + u64 file_size, align_size; + + vec_foreach (s, em->sections) + { + /* Ignore deleted and unused sections. */ + switch (s->header.type) + { + case ~0: + n_deleted_sections++; + case ELF_SECTION_UNUSED: + continue; + + case ELF_SECTION_STRING_TABLE: + case ELF_SECTION_SYMBOL_TABLE: + if (!(s->index == em->dynamic_string_table_section_index + || s->index == + em->file_header.section_header_string_table_index)) + { + vec_add1 (deferred_symbol_and_string_sections, s->index); + continue; + } + break; + + default: + break; + } + + exec_address = round_pow2_u64 (exec_address, s->header.align); + + /* Put sections we added at end of file. */ + if (s->header.file_offset == ~0) + s->header.file_offset = file_offset; + + /* Follow gaps in original file. */ + if (s->header.exec_address > exec_address) + { + exec_address = s->header.exec_address; + file_offset = s->header.file_offset; + } + + if (s->header.flags & ELF_SECTION_FLAG_ALLOC) + { + s->exec_address_change = exec_address - s->header.exec_address; + n_sections_with_changed_exec_address += s->exec_address_change != 0; + s->header.exec_address = exec_address; + } + + if (s->header.type == ELF_SECTION_NO_BITS) + file_size = s->header.file_size; + else + file_size = vec_len (s->contents); + + { + u64 align; + + if (s + 1 >= vec_end (em->sections)) + align = 16; + else if (s[1].header.type == ELF_SECTION_NO_BITS) + align = 8; + else + align = s[1].header.align; + + if (s->header.flags & ELF_SECTION_FLAG_ALLOC) + { + u64 v = round_pow2_u64 (exec_address + file_size, align); + align_size = v - exec_address; + } + else + { + u64 v = round_pow2_u64 (file_offset + file_size, align); + align_size = v - file_offset; + } + } + + s->header.file_offset = file_offset; + s->header.file_size = file_size; + s->align_size = align_size; + + if (s->header.type != ELF_SECTION_NO_BITS) + file_offset += align_size; + exec_address += align_size; + } + + /* Section headers go after last section but before symbol/string + tables. */ + { + elf64_file_header_t *fh = &em->file_header; + + fh->section_header_file_offset = file_offset; + fh->section_header_count = vec_len (em->sections) - n_deleted_sections; + file_offset += (u64) fh->section_header_count * fh->section_header_size; + } + + { + int i; + for (i = 0; i < vec_len (deferred_symbol_and_string_sections); i++) + { + s = + vec_elt_at_index (em->sections, + deferred_symbol_and_string_sections[i]); + + s->header.file_offset = file_offset; + s->header.file_size = vec_len (s->contents); + + align_size = round_pow2 (vec_len (s->contents), 16); + s->align_size = align_size; + file_offset += align_size; + } + vec_free (deferred_symbol_and_string_sections); + } + } + + /* Update dynamic entries now that sections have been assigned + possibly new addresses. */ +#if 0 + if (rebuild) + elf_set_dynamic_entries (em); +#endif + + /* Update segments for changed section addresses. */ + { + elf_segment_t *g; + uword si; + + vec_foreach (g, em->segments) + { + u64 s_lo, s_hi, f_lo = 0; + u32 n_sections = 0; + + if (g->header.memory_size == 0) + continue; + + s_lo = s_hi = 0; + /* *INDENT-OFF* */ + clib_bitmap_foreach (si, g->section_index_bitmap, ({ + u64 lo, hi; + + s = vec_elt_at_index (em->sections, si); + lo = s->header.exec_address; + hi = lo + s->align_size; + if (n_sections == 0) + { + s_lo = lo; + s_hi = hi; + f_lo = s->header.file_offset; + n_sections++; + } + else + { + if (lo < s_lo) + { + s_lo = lo; + f_lo = s->header.file_offset; + } + if (hi > s_hi) + s_hi = hi; + } + })); + /* *INDENT-ON* */ + + if (n_sections == 0) + continue; + + /* File offset zero includes ELF headers/segment headers. + Don't change that. */ + if (g->header.file_offset == 0 && g->header.type == ELF_SEGMENT_LOAD) + { + s_lo = g->header.virtual_address; + f_lo = g->header.file_offset; + } + + g->header.virtual_address = s_lo; + g->header.physical_address = s_lo; + g->header.file_offset = f_lo; + g->header.memory_size = s_hi - s_lo; + } + } +} + +clib_error_t * +elf_write_file (elf_main_t * em, char *file_name) +{ + int fd; + FILE *f; + clib_error_t *error = 0; + + fd = open (file_name, O_CREAT | O_RDWR | O_TRUNC, 0755); + if (fd < 0) + return clib_error_return_unix (0, "open `%s'", file_name); + + f = fdopen (fd, "w"); + + /* Section contents may have changed. So, we need to update + stuff to reflect this. */ + layout_sections (em); + + /* Write first header. */ + { + elf_first_header_t h = em->first_header; + + elf_swap_first_header (em, &h); + if (fwrite (&h, sizeof (h), 1, f) != 1) + { + error = clib_error_return_unix (0, "write first header"); + goto error; + } + } + + /* Write file header. */ + { + elf64_file_header_t h = em->file_header; + + /* Segment headers are after first header. */ + h.segment_header_file_offset = sizeof (elf_first_header_t); + if (em->first_header.file_class == ELF_64BIT) + h.segment_header_file_offset += sizeof (elf64_file_header_t); + else + h.segment_header_file_offset += sizeof (elf32_file_header_t); + + if (em->first_header.file_class == ELF_64BIT) + { +#define _(t,field) h.field = elf_swap_##t (em, h.field); + foreach_elf64_file_header; +#undef _ + + if (fwrite (&h, sizeof (h), 1, f) != 1) + { + error = clib_error_return_unix (0, "write file header"); + goto error; + } + } + else + { + elf32_file_header_t h32; + +#define _(t,field) h32.field = elf_swap_##t (em, h.field); + foreach_elf32_file_header; +#undef _ + + if (fwrite (&h32, sizeof (h32), 1, f) != 1) + { + error = clib_error_return_unix (0, "write file header"); + goto error; + } + } + } + + /* Write segment headers. */ + { + elf_segment_t *s; + + vec_foreach (s, em->segments) + { + elf64_segment_header_t h; + + if (s->header.type == ~0) + continue; + + h = s->header; + + if (em->first_header.file_class == ELF_64BIT) + { +#define _(t,field) h.field = elf_swap_##t (em, h.field); + foreach_elf64_segment_header; +#undef _ + + if (fwrite (&h, sizeof (h), 1, f) != 1) + { + error = + clib_error_return_unix (0, "write segment header %U", + format_elf_segment, em, s); + goto error; + } + } + else + { + elf32_segment_header_t h32; + +#define _(t,field) h32.field = elf_swap_##t (em, h.field); + foreach_elf32_segment_header; +#undef _ + + if (fwrite (&h32, sizeof (h32), 1, f) != 1) + { + error = + clib_error_return_unix (0, "write segment header %U", + format_elf_segment, em, s); + goto error; + } + } + } + } + + /* Write contents for all sections. */ + { + elf_section_t *s; + + vec_foreach (s, em->sections) + { + if (s->header.file_size == 0) + continue; + + if (fseek (f, s->header.file_offset, SEEK_SET) < 0) + { + fclose (f); + return clib_error_return_unix (0, "fseek 0x%Lx", + s->header.file_offset); + } + + if (s->header.type == ELF_SECTION_NO_BITS) + /* don't write for .bss sections */ ; + else if (fwrite (s->contents, vec_len (s->contents), 1, f) != 1) + { + error = + clib_error_return_unix (0, "write %s section contents", + elf_section_name (em, s)); + goto error; + } + } + + /* Finally write section headers. */ + if (fseek (f, em->file_header.section_header_file_offset, SEEK_SET) < 0) + { + fclose (f); + return clib_error_return_unix + (0, "fseek 0x%Lx", em->file_header.section_header_file_offset); + } + + vec_foreach (s, em->sections) + { + elf64_section_header_t h; + + if (s->header.type == ~0) + continue; + + h = s->header; + + if (em->first_header.file_class == ELF_64BIT) + { +#define _(t,field) h.field = elf_swap_##t (em, h.field); + foreach_elf64_section_header; +#undef _ + + if (fwrite (&h, sizeof (h), 1, f) != 1) + { + error = + clib_error_return_unix (0, "write %s section header", + elf_section_name (em, s)); + goto error; + } + } + else + { + elf32_section_header_t h32; + +#define _(t,field) h32.field = elf_swap_##t (em, h.field); + foreach_elf32_section_header; +#undef _ + + if (fwrite (&h32, sizeof (h32), 1, f) != 1) + { + error = + clib_error_return_unix (0, "write %s section header", + elf_section_name (em, s)); + goto error; + } + } + } + } + +error: + fclose (f); + return error; +} + +clib_error_t * +elf_delete_named_section (elf_main_t * em, char *section_name) +{ + elf_section_t *s = 0; + clib_error_t *error; + + error = elf_get_section_by_name (em, section_name, &s); + if (error) + return error; + + s->header.type = ~0; + + return 0; +} + +void +elf_create_section_with_contents (elf_main_t * em, + char *section_name, + elf64_section_header_t * header, + void *contents, uword n_content_bytes) +{ + elf_section_t *s, *sts; + u8 *st, *c; + uword *p, is_new_section; + + /* See if section already exists with given name. + If so, just replace contents. */ + is_new_section = 0; + if ((p = hash_get_mem (em->section_by_name, section_name))) + { + s = vec_elt_at_index (em->sections, p[0]); + _vec_len (s->contents) = 0; + c = s->contents; + } + else + { + vec_add2 (em->sections, s, 1); + is_new_section = 1; + c = 0; + } + + sts = + vec_elt_at_index (em->sections, + em->file_header.section_header_string_table_index); + st = sts->contents; + + s->header = header[0]; + + s->header.file_offset = ~0; + s->header.file_size = n_content_bytes; + s->index = s - em->sections; + + /* Add name to string table. */ + s->header.name = vec_len (st); + vec_add (st, section_name, strlen (section_name)); + vec_add1 (st, 0); + sts->contents = st; + + vec_resize (c, n_content_bytes); + clib_memcpy (c, contents, n_content_bytes); + s->contents = c; + + em->file_header.section_header_count += is_new_section + && s->header.type != ~0; +} + +uword +elf_delete_segment_with_type (elf_main_t * em, + elf_segment_type_t segment_type) +{ + uword n_deleted = 0; + elf_segment_t *s; + + vec_foreach (s, em->segments) if (s->header.type == segment_type) + { + s->header.type = ~0; + n_deleted += 1; + } + + ASSERT (em->file_header.segment_header_count >= n_deleted); + em->file_header.segment_header_count -= n_deleted; + + return n_deleted; +} + +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/elf.h b/src/vppinfra/elf.h new file mode 100644 index 00000000..008ea284 --- /dev/null +++ b/src/vppinfra/elf.h @@ -0,0 +1,1062 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_elf_h +#define included_clib_elf_h + +#include <vppinfra/format.h> +#include <vppinfra/hash.h> +#include <vppinfra/vec.h> +#include <vppinfra/byte_order.h> + +#define foreach_elf_file_class \ + _ (CLASS_NONE) _ (32BIT) _ (64BIT) + +#define foreach_elf_data_encoding \ + _ (ENCODING_NONE) \ + _ (TWOS_COMPLEMENT_LITTLE_ENDIAN) \ + _ (TWOS_COMPLEMENT_BIG_ENDIAN) + +#define ELF_VERSION_NONE (0) +#define ELF_VERSION_CURRENT (1) + +#define foreach_elf_abi \ + _ (SYSV, 0) \ + _ (HPUX, 1) \ + _ (NETBSD, 2) \ + _ (LINUX, 3) \ + _ (SOLARIS, 6) \ + _ (AIX, 7) \ + _ (IRIX, 8) \ + _ (FREEBSD, 9) \ + _ (COMPAQ_TRU64, 10) \ + _ (MODESTO, 11) \ + _ (OPENBSD, 12) \ + _ (ARM, 97) \ + _ (STANDALONE, 255) + +/* Legal values for type (object file type). */ +#define foreach_elf_file_type \ + _ (NONE, 0) \ + _ (RELOC, 1) \ + _ (EXEC, 2) \ + _ (SHARED, 3) \ + _ (CORE, 4) \ + _ (OS_SPECIFIC_LO, 0xfe00) \ + _ (OS_SPECIFIC_HI, 0xfeff) \ + _ (ARCH_SPECIFIC_LO, 0xff00) \ + _ (ARCH_SPECIFIC_HI, 0xffff) + +/* Legal values for architecture. */ +#define foreach_elf_architecture \ + _ (NONE, 0) /* No machine */ \ + _ (M32, 1) /* AT&T WE 32100 */ \ + _ (SPARC, 2) /* SUN SPARC */ \ + _ (386, 3) /* Intel 80386 */ \ + _ (68K, 4) /* Motorola m68k family */ \ + _ (88K, 5) /* Motorola m88k family */ \ + _ (860, 7) /* Intel 80860 */ \ + _ (MIPS, 8) /* MIPS R3000 big-endian */ \ + _ (S370, 9) /* IBM System/370 */ \ + _ (MIPS_RS3_LE, 10) /* MIPS R3000 little-endian */ \ + _ (PARISC, 15) /* HPPA */ \ + _ (VPP500, 17) /* Fujitsu VPP500 */ \ + _ (SPARC32PLUS, 18) /* Sun's "v8plus" */ \ + _ (960, 19) /* Intel 80960 */ \ + _ (PPC, 20) /* PowerPC */ \ + _ (PPC64, 21) /* PowerPC 64-bit */ \ + _ (S390, 22) /* IBM S390 */ \ + _ (V800, 36) /* NEC V800 series */ \ + _ (FR20, 37) /* Fujitsu FR20 */ \ + _ (RH32, 38) /* TRW RH-32 */ \ + _ (RCE, 39) /* Motorola RCE */ \ + _ (ARM, 40) /* ARM */ \ + _ (FAKE_ALPHA, 41) /* Digital Alpha */ \ + _ (SH, 42) /* Hitachi SH */ \ + _ (SPARCV9, 43) /* SPARC v9 64-bit */ \ + _ (TRICORE, 44) /* Siemens Tricore */ \ + _ (ARC, 45) /* Argonaut RISC Core */ \ + _ (H8_300, 46) /* Hitachi H8/300 */ \ + _ (H8_300H, 47) /* Hitachi H8/300H */ \ + _ (H8S, 48) /* Hitachi H8S */ \ + _ (H8_500, 49) /* Hitachi H8/500 */ \ + _ (IA_64, 50) /* Intel Merced */ \ + _ (MIPS_X, 51) /* Stanford MIPS-X */ \ + _ (COLDFIRE, 52) /* Motorola Coldfire */ \ + _ (68HC12, 53) /* Motorola M68HC12 */ \ + _ (MMA, 54) /* Fujitsu MMA Multimedia Accel. */ \ + _ (PCP, 55) /* Siemens PCP */ \ + _ (NCPU, 56) /* Sony nCPU embeeded RISC */ \ + _ (NDR1, 57) /* Denso NDR1 microprocessor */ \ + _ (STARCORE, 58) /* Motorola Start*Core processor */ \ + _ (ME16, 59) /* Toyota ME16 processor */ \ + _ (ST100, 60) /* STMicroelectronic ST100 */ \ + _ (TINYJ, 61) /* Advanced Logic Corp. Tinyj */ \ + _ (X86_64, 62) /* AMD x86-64 architecture */ \ + _ (PDSP, 63) /* Sony DSP Processor */ \ + _ (FX66, 66) /* Siemens FX66 microcontroller */ \ + _ (ST9PLUS, 67) /* STMicroelectronics ST9+ 8/16 mc */ \ + _ (ST7, 68) /* STmicroelectronics ST7 8 bit mc */ \ + _ (68HC16, 69) /* Motorola MC68HC16 */ \ + _ (68HC11, 70) /* Motorola MC68HC11 */ \ + _ (68HC08, 71) /* Motorola MC68HC08 */ \ + _ (68HC05, 72) /* Motorola MC68HC05 */ \ + _ (SVX, 73) /* Silicon Graphics SVx */ \ + _ (ST19, 74) /* STMicroelectronics ST19 8 bit mc */ \ + _ (VAX, 75) /* Digital VAX */ \ + _ (CRIS, 76) /* Axis 32-bit embedded proc. */ \ + _ (JAVELIN, 77) /* Infineon 32-bit embedded proc. */ \ + _ (FIREPATH, 78) /* Element 14 64-bit DSP Processor */ \ + _ (ZSP, 79) /* LSI Logic 16-bit DSP Processor */ \ + _ (MMIX, 80) /* Knuth's 64-bit processor */ \ + _ (HUANY, 81) /* Harvard machine-independent */ \ + _ (PRISM, 82) /* SiTera Prism */ \ + _ (AVR, 83) /* Atmel AVR 8-bit microcontroller */ \ + _ (FR30, 84) /* Fujitsu FR30 */ \ + _ (D10V, 85) /* Mitsubishi D10V */ \ + _ (D30V, 86) /* Mitsubishi D30V */ \ + _ (V850, 87) /* NEC v850 */ \ + _ (M32R, 88) /* Mitsubishi M32R */ \ + _ (MN10300, 89) /* Matsushita MN10300 */ \ + _ (MN10200, 90) /* Matsushita MN10200 */ \ + _ (PJ, 91) /* picoJava */ \ + _ (OPENRISC, 92) /* OpenRISC 32-bit processor */ \ + _ (ARC_A5, 93) /* ARC Cores Tangent-A5 */ \ + _ (XTENSA, 94) /* Tensilica Xtensa Architecture */ \ + _ (ALPHA, 0x9026) + +#define _(f) ELF_##f, + +typedef enum +{ + foreach_elf_file_class ELF_N_FILE_CLASS, +} elf_file_class_t; + +typedef enum +{ + foreach_elf_data_encoding ELF_N_DATA_ENCODING, +} elf_data_encoding_t; + +#undef _ + +#define _(f,i) ELF_##f = i, + +typedef enum +{ + foreach_elf_abi +} elf_abi_t; + +typedef enum +{ + foreach_elf_file_type +} elf_file_type_t; + +#undef _ + +typedef enum +{ +#define _(f,i) ELF_ARCH_##f = i, + foreach_elf_architecture +#undef _ +} elf_architecture_t; + +typedef struct +{ + /* 0x7f ELF */ + u8 magic[4]; + + elf_file_class_t file_class:8; + elf_data_encoding_t data_encoding:8; + u8 file_version_ident; + elf_abi_t abi:8; + u8 abi_version; + + u8 pad[7]; + + elf_file_type_t file_type:16; + elf_architecture_t architecture:16; + + u32 file_version; +} elf_first_header_t; + +/* 32/64 bit file header following basic file header. */ +#define foreach_elf32_file_header \ + _ (u32, entry_point) \ + _ (u32, segment_header_file_offset) \ + _ (u32, section_header_file_offset) \ + _ (u32, flags) \ + _ (u16, n_bytes_this_header) \ + _ (u16, segment_header_size) \ + _ (u16, segment_header_count) \ + _ (u16, section_header_size) \ + _ (u16, section_header_count) \ + _ (u16, section_header_string_table_index) + +#define foreach_elf64_file_header \ + _ (u64, entry_point) \ + _ (u64, segment_header_file_offset) \ + _ (u64, section_header_file_offset) \ + _ (u32, flags) \ + _ (u16, n_bytes_this_header) \ + _ (u16, segment_header_size) \ + _ (u16, segment_header_count) \ + _ (u16, section_header_size) \ + _ (u16, section_header_count) \ + _ (u16, section_header_string_table_index) + +/* Section header. */ +#define foreach_elf32_section_header \ + _ (u32, name) \ + _ (u32, type) \ + _ (u32, flags) \ + _ (u32, exec_address) \ + _ (u32, file_offset) \ + _ (u32, file_size) \ + _ (u32, link) \ + _ (u32, additional_info) \ + _ (u32, align) \ + _ (u32, entry_size) + +#define foreach_elf64_section_header \ + _ (u32, name) \ + _ (u32, type) \ + _ (u64, flags) \ + _ (u64, exec_address) \ + _ (u64, file_offset) \ + _ (u64, file_size) \ + _ (u32, link) \ + _ (u32, additional_info) \ + _ (u64, align) \ + _ (u64, entry_size) + +/* Program segment header. */ +#define foreach_elf32_segment_header \ + _ (u32, type) \ + _ (u32, file_offset) \ + _ (u32, virtual_address) \ + _ (u32, physical_address) \ + _ (u32, file_size) \ + _ (u32, memory_size) \ + _ (u32, flags) \ + _ (u32, align) + +#define foreach_elf64_segment_header \ + _ (u32, type) \ + _ (u32, flags) \ + _ (u64, file_offset) \ + _ (u64, virtual_address) \ + _ (u64, physical_address) \ + _ (u64, file_size) \ + _ (u64, memory_size) \ + _ (u64, align) + +/* Symbol table. */ +#define foreach_elf32_symbol_header \ + _ (u32, name) \ + _ (u32, value) \ + _ (u32, size) \ + /* binding upper 4 bits; type lower 4 bits */ \ + _ (u8, binding_and_type) \ + _ (u8, visibility) \ + _ (u16, section_index) + +#define foreach_elf64_symbol_header \ + _ (u32, name) \ + _ (u8, binding_and_type) \ + _ (u8, visibility) \ + _ (u16, section_index) \ + _ (u64, value) \ + _ (u64, size) + +#define _(t,f) t f; + +typedef struct +{ +foreach_elf32_file_header} elf32_file_header_t; + +typedef struct +{ +foreach_elf64_file_header} elf64_file_header_t; + +typedef struct +{ +foreach_elf32_section_header} elf32_section_header_t; + +typedef struct +{ +foreach_elf64_section_header} elf64_section_header_t; + +typedef struct +{ +foreach_elf32_segment_header} elf32_segment_header_t; + +typedef struct +{ +foreach_elf64_segment_header} elf64_segment_header_t; + +typedef struct +{ +foreach_elf32_symbol_header} elf32_symbol_t; + +typedef struct +{ +foreach_elf64_symbol_header} elf64_symbol_t; +#undef _ + +/* Special section names. */ +#define foreach_elf_symbol_reserved_section_index \ + _ (ABSOLUTE, 0xfff1) /* Associated symbol is absolute */ \ + _ (COMMON, 0xfff2) /* Associated symbol is common */ \ + _ (XINDEX, 0xffff) /* Index is in extra table. */ + +#define ELF_SYMBOL_SECTION_RESERVED_LO 0xff00 +#define ELF_SYMBOL_SECTION_RESERVED_HI 0xffff +#define ELF_SYMBOL_SECTION_ARCH_SPECIFIC_LO 0xff00 +#define ELF_SYMBOL_SECTION_ARCH_SPECIFIC_HI 0xff1f +#define ELF_SYMBOL_SECTION_OS_SPECIFIC_LO 0xff20 +#define ELF_SYMBOL_SECTION_OS_SPECIFIC_HI 0xff3f + +/* Section types. */ +#define foreach_elf_section_type \ + _ (UNUSED, 0) \ + _ (PROGRAM_DATA, 1) \ + _ (SYMBOL_TABLE, 2) \ + _ (STRING_TABLE, 3) \ + _ (RELOCATION_ADD, 4) \ + _ (SYMBOL_TABLE_HASH, 5) \ + _ (DYNAMIC, 6) /* Dynamic linking information */ \ + _ (NOTE, 7) /* Notes */ \ + _ (NO_BITS, 8) /* Program space with no data (bss) */ \ + _ (RELOCATION, 9) /* Relocation entries, no addends */ \ + _ (DYNAMIC_SYMBOL_TABLE, 11) /* Dynamic linker symbol table */ \ + _ (INIT_ARRAY, 14) /* Array of constructors */ \ + _ (FINI_ARRAY, 15) /* Array of destructors */ \ + _ (PREINIT_ARRAY, 16) /* Array of pre-constructors */ \ + _ (GROUP, 17) /* Section group */ \ + _ (SYMTAB_SHNDX, 18) /* Extended section indices */ \ + _ (OS_SPECIFIC_LO, 0x60000000) /* Start OS-specific */ \ + _ (GNU_LIBLIST, 0x6ffffff7) /* Prelink library list */ \ + _ (CHECKSUM, 0x6ffffff8) /* Checksum for DSO content. */ \ + _ (SUNW_MOVE, 0x6ffffffa) \ + _ (SUNW_COMDAT, 0x6ffffffb) \ + _ (SUNW_SYMINFO, 0x6ffffffc) \ + _ (GNU_VERDEF, 0x6ffffffd) /* Version definition section. */ \ + _ (GNU_VERNEED, 0x6ffffffe) /* Version needs section. */ \ + _ (GNU_VERSYM, 0x6fffffff) /* Version symbol table. */ \ + _ (ARCH_SPECIFIC_LO, 0x70000000) /* Start of processor-specific */ \ + _ (ARCH_SPECIFIC_HI, 0x7fffffff) /* End of processor-specific */ \ + _ (APP_SPECIFIC_LO, 0x80000000) /* Start of application-specific */ \ + _ (APP_SPECIFIC_HI, 0x8fffffff) /* End of application-specific */ + +/* Section flags. */ +#define foreach_elf_section_flag \ + _ (WRITE, 0) \ + _ (ALLOC, 1) \ + _ (EXEC, 2) \ + _ (MERGE, 3) \ + _ (STRING_TABLE, 5) \ + _ (INFO_LINK, 6) \ + _ (PRESERVE_LINK_ORDER, 7) \ + _ (OS_NON_CONFORMING, 8) \ + _ (GROUP, 9) \ + _ (TLS, 10) \ + _ (OS_SPECIFIC_LO, 20) \ + _ (OS_SPECIFIC_HI, 27) \ + _ (ARCH_SPECIFIC_LO, 28) \ + _ (ARCH_SPECIFIC_HI, 31) + +typedef enum +{ +#define _(f,i) ELF_SECTION_##f = i, + foreach_elf_section_type +#undef _ + ELF_SECTION_OS_SPECIFIC_HI = 0x6fffffff, +} elf_section_type_t; + +typedef enum +{ +#define _(f,i) ELF_SECTION_FLAG_BIT_##f = i, + foreach_elf_section_flag +#undef _ +} elf_section_flag_bit_t; + +typedef enum +{ +#define _(f,i) ELF_SECTION_FLAG_##f = 1 << ELF_SECTION_FLAG_BIT_##f, + foreach_elf_section_flag +#undef _ +} elf_section_flag_t; + +/* Symbol bindings (upper 4 bits of binding_and_type). */ +#define foreach_elf_symbol_binding \ + _ (LOCAL, 0) /* Local symbol */ \ + _ (GLOBAL, 1) /* Global symbol */ \ + _ (WEAK, 2) /* Weak symbol */ \ + _ (OS_SPECIFIC_LO, 10) /* Start of OS-specific */ \ + _ (OS_SPECIFIC_HI, 12) /* End of OS-specific */ \ + _ (ARCH_SPECIFIC_LO, 13) /* Start of processor-specific */ \ + _ (ARCH_SPECIFIC_HI, 15) /* End of processor-specific */ + +/* Symbol types (lower 4 bits of binding_and_type). */ +#define foreach_elf_symbol_type \ + _ (NONE, 0) \ + _ (DATA, 1) /* Symbol is a data object */ \ + _ (CODE, 2) /* Symbol is a code object */ \ + _ (SECTION, 3) /* Symbol associated with a section */ \ + _ (FILE, 4) /* Symbol's name is file name */ \ + _ (COMMON, 5) /* Symbol is a common data object */ \ + _ (TLS, 6) /* Symbol is thread-local data */ \ + _ (OS_SPECIFIC_LO, 10) /* Start of OS-specific */ \ + _ (OS_SPECIFIC_HI, 12) /* End of OS-specific */ \ + _ (ARCH_SPECIFIC_LO, 13) /* Start of processor-specific */ \ + _ (ARCH_SPECIFIC_HI, 15) /* End of processor-specific */ + +/* Symbol visibility. */ +#define foreach_elf_symbol_visibility \ + _ (DEFAULT, 0) /* Default symbol visibility rules */ \ + _ (INTERNAL, 1) /* Processor specific hidden class */ \ + _ (HIDDEN, 2) /* Unavailable in other modules */ \ + _ (PROTECTED, 3) /* Not preemptible, not exported */ + +/* The syminfo section if available contains additional + information about every dynamic symbol. */ +typedef struct +{ + u16 bound_to; + u16 flags; +} elf_symbol_info_t; + +/* Possible values for bound_to. */ +#define foreach_elf_symbol_info_bound_to \ + _ (SELF, 0xffff) /* Symbol bound to self */ \ + _ (PARENT, 0xfffe) /* Symbol bound to parent */ \ + _ (RESERVED_LO, 0xff00) \ + _ (RESERVED_HI, 0xffff) + +/* Symbol info flags. */ +#define foreach_elf_symbol_info_flags \ + _ (DIRECT) /* Direct bound symbol */ \ + _ (PASS_THRU) /* Pass-thru symbol for translator */ \ + _ (COPY) /* Symbol is a copy-reloc */ \ + _ (LAZY_LOAD) /* Symbol bound to object to be lazy loaded */ + +/* Relocation table entry with/without addend. */ +typedef struct +{ + u32 address; + u32 symbol_and_type; /* high 24 symbol, low 8 type. */ + i32 addend[0]; +} elf32_relocation_t; + +typedef struct +{ + u64 address; + u64 symbol_and_type; /* high 32 symbol, low 32 type. */ + i64 addend[0]; +} elf64_relocation_t; + +typedef struct +{ + u64 address; + u64 symbol_and_type; + u64 addend; +} elf_relocation_with_addend_t; + +#define elf_relocation_next(r,type) \ + ((void *) ((r) + 1) \ + + ((type) == ELF_SECTION_RELOCATION_ADD ? sizeof ((r)->addend[0]) : 0)) + +/* Segment type. */ +#define foreach_elf_segment_type \ + _ (UNUSED, 0) \ + _ (LOAD, 1) /* Loadable program segment */ \ + _ (DYNAMIC, 2) /* Dynamic linking information */ \ + _ (INTERP, 3) /* Program interpreter */ \ + _ (NOTE, 4) /* Auxiliary information */ \ + _ (SEGMENT_TABLE, 6) /* Entry for header table itself */ \ + _ (TLS, 7) /* Thread-local storage segment */ \ + _ (OS_SPECIFIC_LO, 0x60000000) /* Start of OS-specific */ \ + _ (GNU_EH_FRAME, 0x6474e550) /* GCC .eh_frame_hdr segment */ \ + _ (GNU_STACK, 0x6474e551) /* Indicates stack executability */ \ + _ (GNU_RELRO, 0x6474e552) /* Read-only after relocation */ \ + _ (SUNW_BSS, 0x6ffffffa) /* Sun specific BSS */ \ + _ (SUNW_STACK, 0x6ffffffb) /* Sun specific stack */ \ + _ (OS_SPECIFIC_HI, 0x6fffffff) /* End of OS-specific */ \ + _ (ARCH_SPECIFIC_LO, 0x70000000) /* Start of processor-specific */ \ + _ (ARCH_SPECIFIC_HI, 0x7fffffff) /* End of processor-specific */ + +/* Segment flags. */ +#define foreach_elf_segment_flag \ + _ (EXEC, 0) \ + _ (WRITE, 1) \ + _ (READ, 2) \ + _ (OS_SPECIFIC_LO, 20) \ + _ (OS_SPECIFIC_HI, 27) \ + _ (ARCH_SPECIFIC_LO, 28) \ + _ (ARCH_SPECIFIC_HI, 31) + +typedef enum +{ +#define _(f,i) ELF_SEGMENT_##f = i, + foreach_elf_segment_type +#undef _ +} elf_segment_type_t; + +typedef enum +{ +#define _(f,i) ELF_SEGMENT_FLAG_BIT_##f = i, + foreach_elf_segment_flag +#undef _ +} elf_segment_flag_bit_t; + +typedef enum +{ +#define _(f,i) ELF_SEGMENT_FLAG_##f = 1 << ELF_SEGMENT_FLAG_BIT_##f, + foreach_elf_segment_flag +#undef _ +} elf_segment_flag_t; + +#define foreach_elf32_dynamic_entry_header \ + _ (u32, type) \ + _ (u32, data) + +#define foreach_elf64_dynamic_entry_header \ + _ (u64, type) \ + _ (u64, data) + +#define _(t,f) t f; + +typedef struct +{ +foreach_elf32_dynamic_entry_header} elf32_dynamic_entry_t; + +typedef struct +{ +foreach_elf64_dynamic_entry_header} elf64_dynamic_entry_t; + +#undef _ + +#define foreach_elf_dynamic_entry_type \ + _ (END, 0) /* Marks end of dynamic section */ \ + _ (NEEDED_LIBRARY, 1) /* Name of needed library */ \ + _ (PLT_RELOCATION_SIZE, 2) /* Size in bytes of PLT relocs */ \ + _ (PLT_GOT, 3) /* Processor defined value */ \ + _ (SYMBOL_HASH, 4) /* Address of symbol hash table */ \ + _ (STRING_TABLE, 5) /* Address of string table */ \ + _ (SYMBOL_TABLE, 6) /* Address of symbol table */ \ + _ (RELA_ADDRESS, 7) /* Address of Rela relocs */ \ + _ (RELA_SIZE, 8) /* Total size of Rela relocs */ \ + _ (RELA_ENTRY_SIZE, 9) /* Size of one Rela reloc */ \ + _ (STRING_TABLE_SIZE, 10) /* Size of string table */ \ + _ (SYMBOL_TABLE_ENTRY_SIZE, 11) /* Size of one symbol table entry */ \ + _ (INIT_FUNCTION, 12) /* Address of init function */ \ + _ (FINI_FUNCTION, 13) /* Address of termination function */ \ + _ (SONAME, 14) /* Name of shared object */ \ + _ (RPATH, 15) /* Library search path (deprecated) */ \ + _ (SYMBOLIC, 16) /* Start symbol search here */ \ + _ (REL, 17) /* Address of Rel relocs */ \ + _ (RELSZ, 18) /* Total size of Rel relocs */ \ + _ (RELENT, 19) /* Size of one Rel reloc */ \ + _ (PLT_RELOCATION_TYPE, 20) /* Type of reloc in PLT */ \ + _ (DEBUG, 21) /* For debugging; unspecified */ \ + _ (TEXTREL, 22) /* Reloc might modify .text */ \ + _ (PLT_RELOCATION_ADDRESS, 23) /* Address of PLT relocs */ \ + _ (BIND_NOW, 24) /* Process relocations of object */ \ + _ (INIT_ARRAY, 25) /* Array with addresses of init fct */ \ + _ (FINI_ARRAY, 26) /* Array with addresses of fini fct */ \ + _ (INIT_ARRAYSZ, 27) /* Size in bytes of DT_INIT_ARRAY */ \ + _ (FINI_ARRAYSZ, 28) /* Size in bytes of DT_FINI_ARRAY */ \ + _ (RUN_PATH, 29) /* Library search path */ \ + _ (FLAGS, 30) /* Flags for object being loaded */ \ + _ (ENCODING, 31) /* Start of encoded range */ \ + _ (PREINIT_ARRAY, 32) /* Array with addresses of fns */ \ + _ (PREINIT_ARRAY_SIZE, 33) /* Size of PREINIT_ARRAY in bytes. */ \ + _ (GNU_PRELINKED, 0x6ffffdf5) /* Prelinking timestamp */ \ + _ (GNU_CONFLICTSZ, 0x6ffffdf6) /* Size of conflict section */ \ + _ (GNU_LIBLISTSZ, 0x6ffffdf7) /* Size of library list */ \ + _ (CHECKSUM, 0x6ffffdf8) \ + _ (PLTPADSZ, 0x6ffffdf9) \ + _ (MOVEENT, 0x6ffffdfa) \ + _ (MOVESZ, 0x6ffffdfb) \ + _ (FEATURE_1, 0x6ffffdfc) /* Feature selection (DTF_*). */ \ + _ (POSFLAG_1, 0x6ffffdfd) /* Flags for following entries. */ \ + _ (SYMINSZ, 0x6ffffdfe) /* Size of syminfo table (in bytes) */ \ + _ (SYMINENT, 0x6ffffdff) /* Entry size of syminfo */ \ + _ (GNU_HASH, 0x6ffffef5) \ + _ (GNU_CONFLICT, 0x6ffffef8) /* Start of conflict section */ \ + _ (GNU_LIBLIST, 0x6ffffef9) /* Library list */ \ + _ (CONFIG, 0x6ffffefa) /* Configuration information. */ \ + _ (DEPAUDIT, 0x6ffffefb) /* Dependency auditing. */ \ + _ (AUDIT, 0x6ffffefc) /* Object auditing. */ \ + _ (PLTPAD, 0x6ffffefd) /* PLT padding. */ \ + _ (MOVETAB, 0x6ffffefe) /* Move table. */ \ + _ (SYMINFO, 0x6ffffeff) /* Syminfo table. */ \ + _ (VERSYM, 0x6ffffff0) \ + _ (RELACOUNT, 0x6ffffff9) \ + _ (RELCOUNT, 0x6ffffffa) \ + _ (FLAGS_1, 0x6ffffffb) /* State flags, see DF_1_* below. */ \ + _ (VERSION_DEF, 0x6ffffffc) /* Address of version definition table */ \ + _ (VERSION_DEF_COUNT, 0x6ffffffd) /* Number of version definitions */ \ + _ (VERSION_NEED, 0x6ffffffe) /* Address of table with needed versions */ \ + _ (VERSION_NEED_COUNT, 0x6fffffff) /* Number of needed versions */ \ + _ (AUXILIARY, 0x7ffffffd) /* Shared object to load before self */ \ + _ (FILTER, 0x7fffffff) /* Shared object to get values from */ + +typedef enum +{ +#define _(f,n) ELF_DYNAMIC_ENTRY_##f = (n), + foreach_elf_dynamic_entry_type +#undef _ +} elf_dynamic_entry_type_t; + +/* Values of `d_un.d_val' in the DT_FLAGS entry. */ +#define ELF_DYNAMIC_FLAGS_ORIGIN (1 << 0) /* Object may use DF_ORIGIN */ +#define ELF_DYNAMIC_FLAGS_SYMBOLIC (1 << 1) /* Symbol resolutions starts here */ +#define ELF_DYNAMIC_FLAGS_TEXT_RELOCATIONS (1 << 2) /* Object contains text relocations */ +#define ELF_DYNAMIC_FLAGS_BIND_NOW (1 << 3) /* No lazy binding for this object */ +#define ELF_DYNAMIC_FLAGS_STATIC_TLS (1 << 4) /* Module uses the static TLS model */ + +/* State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 + entry in the dynamic section. */ +#define DF_1_NOW 0x00000001 /* Set RTLD_NOW for this object. */ +#define DF_1_GLOBAL 0x00000002 /* Set RTLD_GLOBAL for this object. */ +#define DF_1_GROUP 0x00000004 /* Set RTLD_GROUP for this object. */ +#define DF_1_NODELETE 0x00000008 /* Set RTLD_NODELETE for this object. */ +#define DF_1_LOADFLTR 0x00000010 /* Trigger filtee loading at runtime. */ +#define DF_1_INITFIRST 0x00000020 /* Set RTLD_INITFIRST for this object */ +#define DF_1_NOOPEN 0x00000040 /* Set RTLD_NOOPEN for this object. */ +#define DF_1_ORIGIN 0x00000080 /* $ORIGIN must be handled. */ +#define DF_1_DIRECT 0x00000100 /* Direct binding enabled. */ +#define DF_1_TRANS 0x00000200 +#define DF_1_INTERPOSE 0x00000400 /* Object is used to interpose. */ +#define DF_1_NODEFLIB 0x00000800 /* Ignore default lib search path. */ +#define DF_1_NODUMP 0x00001000 /* Object can't be dldump'ed. */ +#define DF_1_CONFALT 0x00002000 /* Configuration alternative created. */ +#define DF_1_ENDFILTEE 0x00004000 /* Filtee terminates filters search. */ +#define DF_1_DISPRELDNE 0x00008000 /* Disp reloc applied at build time. */ +#define DF_1_DISPRELPND 0x00010000 /* Disp reloc applied at run-time. */ + +/* Flags for the feature selection in DT_FEATURE_1. */ +#define DTF_1_PARINIT 0x00000001 +#define DTF_1_CONFEXP 0x00000002 + +/* Flags in the DT_POSFLAG_1 entry effecting only the next DT_* entry. */ +#define DF_P1_LAZYLOAD 0x00000001 /* Lazyload following object. */ +#define DF_P1_GROUPPERM 0x00000002 /* Symbols from next object are not + generally available. */ + +/* Version definition sections. */ +typedef struct +{ + u16 version; + u16 flags; + u16 index; + u16 aux_count; + u32 name_hash; + u32 aux_byte_offset; + u32 byte_offset_next_version_definition; +} elf_dynamic_version_definition_t; + +typedef struct +{ + u32 name; + u32 next_offset; /* byte offset of ver def aux next entry */ +} elf_dynamic_version_definition_aux_t; + +/* Version definition flags. */ +#define ELF_DYNAMIC_VERSION_FILE (1 << 0) /* Version definition of file itself */ +#define ELF_DYNAMIC_VERSION_WEAK (1 << 1) /* Weak version identifier */ + +/* Version symbol index. */ +#define ELF_DYNAMIC_VERSYM_LOCAL 0 /* Symbol is local. */ +#define ELF_DYNAMIC_VERSYM_GLOBAL 1 /* Symbol is global. */ +#define ELF_DYNAMIC_VERSYM_RESERVED_LO 0xff00 /* Beginning of reserved entries. */ +#define ELF_DYNAMIC_VERSYM_ELIMINATE 0xff01 /* Symbol is to be eliminated. */ + +/* Version dependency section. */ +#define foreach_elf_dynamic_version_need_field \ + _ (u16, version) \ + _ (u16, aux_count) \ + _ (u32, file_name_offset) \ + _ (u32, first_aux_offset) \ + _ (u32, next_offset) + +#define foreach_elf_dynamic_version_need_aux_field \ + _ (u32, hash) \ + _ (u16, flags) \ + _ (u16, versym_index) \ + _ (u32, name) \ + _ (u32, next_offset) + +typedef struct +{ +#define _(t,f) t f; + foreach_elf_dynamic_version_need_field +#undef _ +} elf_dynamic_version_need_t; + +typedef struct +{ +#define _(t,f) t f; + foreach_elf_dynamic_version_need_aux_field +#undef _ +} elf_dynamic_version_need_aux_t; + +typedef union +{ + elf_dynamic_version_need_t need; + elf_dynamic_version_need_aux_t aux; +} elf_dynamic_version_need_union_t; + +/* Note section contents. Each entry in the note section begins with + a header of a fixed form. */ + +typedef struct +{ + u32 name_size; + u32 descriptor_size; + u32 type; +} elf_note_t; + +/* Known names of notes. */ + +/* Solaris entries in the note section have this name. */ +#define ELF_NOTE_SOLARIS "SUNW Solaris" + +/* Note entries for GNU systems have this name. */ +#define ELF_NOTE_GNU "GNU" + + +/* Defined types of notes for Solaris. */ + +/* Value of descriptor (one word) is desired pagesize for the binary. */ +#define ELF_NOTE_PAGESIZE_HINT 1 + + +/* Defined note types for GNU systems. */ + +/* ABI information. The descriptor consists of words: + word 0: OS descriptor + word 1: major version of the ABI + word 2: minor version of the ABI + word 3: subminor version of the ABI +*/ +#ifndef ELF_NOTE_ABI +#define ELF_NOTE_ABI 1 +#endif + +/* Known OSes. These value can appear in word 0 of an ELF_NOTE_ABI + note section entry. */ +#define ELF_NOTE_OS_LINUX 0 +#define ELF_NOTE_OS_GNU 1 +#define ELF_NOTE_OS_SOLARIS2 2 +#define ELF_NOTE_OS_FREEBSD 3 + +/* AMD x86-64 relocations. */ +#define foreach_elf_x86_64_relocation_type \ + _ (NONE, 0) /* No reloc */ \ + _ (DIRECT_64, 1) /* Direct 64 bit */ \ + _ (PC_REL_I32, 2) /* PC relative 32 bit signed */ \ + _ (GOT_REL_32, 3) /* 32 bit GOT entry */ \ + _ (PLT_REL_32, 4) /* 32 bit PLT address */ \ + _ (COPY, 5) /* Copy symbol at runtime */ \ + _ (CREATE_GOT, 6) /* Create GOT entry */ \ + _ (CREATE_PLT, 7) /* Create PLT entry */ \ + _ (RELATIVE, 8) /* Adjust by program base */ \ + _ (PC_REL_I32_GOT, 9) /* 32 bit PC relative offset to GOT */ \ + _ (DIRECT_U32, 10) /* Direct 32 bit zero extended */ \ + _ (DIRECT_I32, 11) /* Direct 32 bit sign extended */ \ + _ (DIRECT_U16, 12) /* Direct 16 bit zero extended */ \ + _ (PC_REL_I16, 13) /* 16 bit sign extended pc relative */ \ + _ (DIRECT_I8, 14) /* Direct 8 bit sign extended */ \ + _ (PC_REL_I8, 15) /* 8 bit sign extended pc relative */ \ + _ (DTPMOD64, 16) /* ID of module containing symbol */ \ + _ (DTPOFF64, 17) /* Offset in module's TLS block */ \ + _ (TPOFF64, 18) /* Offset in initial TLS block */ \ + _ (TLSGD, 19) /* 32 bit signed PC relative offset to two GOT entries for GD symbol */ \ + _ (TLSLD, 20) /* 32 bit signed PC relative offset to two GOT entries for LD symbol */ \ + _ (DTPOFF32, 21) /* Offset in TLS block */ \ + _ (GOTTPOFF, 22) /* 32 bit signed PC relative offset to GOT entry for IE symbol */ \ + _ (TPOFF32, 23) /* Offset in initial TLS, block) */ + +typedef struct +{ + elf64_symbol_t *symbols; + + u32 section_index; + + u8 *string_table; + + uword *symbol_by_name; +} elf_symbol_table_t; + +always_inline void +elf_symbol_table_free (elf_symbol_table_t * s) +{ + vec_free (s->symbols); + hash_free (s->symbol_by_name); +} + +always_inline u8 * +elf_symbol_name (elf_symbol_table_t * t, elf64_symbol_t * sym) +{ + return vec_elt_at_index (t->string_table, sym->name); +} + +typedef struct +{ + elf_relocation_with_addend_t *relocations; + + u32 section_index; +} elf_relocation_table_t; + +always_inline void +elf_relocation_table_free (elf_relocation_table_t * r) +{ + vec_free (r->relocations); +} + +typedef struct +{ + elf64_section_header_t header; + + u32 index; + + /* Index of segments containing this section. */ + uword *segment_index_bitmap; + + /* Aligned size (included padding not included in + header.file_size). */ + u64 align_size; + + i64 exec_address_change; + + u8 *contents; +} elf_section_t; + +typedef struct +{ + elf64_segment_header_t header; + + /* Sections contained in this segment. */ + uword *section_index_bitmap; + + u32 index; + + u8 *contents; +} elf_segment_t; + +typedef struct +{ + u8 need_byte_swap; + + u8 parsed_symbols; + + char *file_name; + + elf_first_header_t first_header; + + elf64_file_header_t file_header; + + elf_segment_t *segments; + + elf_section_t *sections; + + uword *section_by_name; + uword *section_by_start_address; + + elf_symbol_table_t *symbol_tables; + elf_relocation_table_t *relocation_tables; + + char *interpreter; + + elf64_dynamic_entry_t *dynamic_entries; + u8 *dynamic_string_table; + u32 dynamic_string_table_section_index; + u32 dynamic_symbol_table_section_index; + u32 dynamic_symbol_table_index; + u32 dynamic_section_index; + u16 *versym; + u32 versym_section_index; + elf_dynamic_version_need_union_t *verneed; + u32 verneed_section_index; +} elf_main_t; + +always_inline void +elf_main_init (elf_main_t * em) +{ + memset (em, 0, sizeof (em[0])); +} + +always_inline void +elf_main_free (elf_main_t * em) +{ + uword i; + + for (i = 0; i < vec_len (em->segments); i++) + vec_free (em->segments[i].contents); + vec_free (em->segments); + + for (i = 0; i < vec_len (em->sections); i++) + vec_free (em->sections[i].contents); + vec_free (em->sections); + + hash_free (em->section_by_name); + for (i = 0; i < vec_len (em->symbol_tables); i++) + elf_symbol_table_free (em->symbol_tables + i); + for (i = 0; i < vec_len (em->relocation_tables); i++) + elf_relocation_table_free (em->relocation_tables + i); + + vec_free (em->dynamic_entries); + vec_free (em->interpreter); +} + +always_inline void +elf_get_segment_contents (elf_main_t * em, void *data, uword segment_index) +{ + elf_segment_t *g = vec_elt_at_index (em->segments, segment_index); + if (!g->contents) + vec_add (g->contents, data + g->header.file_offset, + g->header.memory_size); +} + +always_inline void * +elf_get_section_contents (elf_main_t * em, + uword section_index, uword elt_size) +{ + elf_section_t *s; + void *result; + + s = vec_elt_at_index (em->sections, section_index); + + result = 0; + if (vec_len (s->contents) > 0) + { + /* Make vector copy of contents with given element size. */ + result = _vec_resize (result, + vec_len (s->contents) / elt_size, + vec_len (s->contents), + /* header_bytes */ 0, + /* align */ 0); + clib_memcpy (result, s->contents, vec_len (s->contents)); + } + + return result; +} + +always_inline void +elf_set_section_contents (elf_main_t * em, + uword section_index, + void *new_contents, uword n_content_bytes) +{ + elf_section_t *s; + + s = vec_elt_at_index (em->sections, section_index); + vec_free (s->contents); + vec_add (s->contents, new_contents, n_content_bytes); +} + +always_inline u8 * +elf_section_name (elf_main_t * em, elf_section_t * s) +{ + elf_section_t *es = vec_elt_at_index (em->sections, + em-> + file_header.section_header_string_table_index); + return vec_elt_at_index (es->contents, s->header.name); +} + +always_inline u8 +elf_swap_u8 (elf_main_t * em, u8 x) +{ + return x; +} + +always_inline u16 +elf_swap_u16 (elf_main_t * em, u16 x) +{ + return em->need_byte_swap ? clib_byte_swap_u16 (x) : x; +} + +always_inline u32 +elf_swap_u32 (elf_main_t * em, u32 x) +{ + return em->need_byte_swap ? clib_byte_swap_u32 (x) : x; +} + +always_inline u64 +elf_swap_u64 (elf_main_t * em, u64 x) +{ + return em->need_byte_swap ? clib_byte_swap_u64 (x) : x; +} + +#define FORMAT_ELF_MAIN_SYMBOLS (1 << 0) +#define FORMAT_ELF_MAIN_RELOCATIONS (1 << 1) +#define FORMAT_ELF_MAIN_DYNAMIC (1 << 2) + +format_function_t format_elf_main; +format_function_t format_elf_symbol; + +clib_error_t *elf_read_file (elf_main_t * em, char *file_name); +clib_error_t *elf_write_file (elf_main_t * em, char *file_name); +clib_error_t *elf_delete_named_section (elf_main_t * em, char *section_name); +clib_error_t *elf_parse (elf_main_t * em, void *data, uword data_bytes); +void elf_parse_symbols (elf_main_t * em); + +clib_error_t *elf_get_section_by_name (elf_main_t * em, char *section_name, + elf_section_t ** result); +clib_error_t *elf_get_section_by_start_address (elf_main_t * em, + uword start_address, + elf_section_t ** result); + +void +elf_create_section_with_contents (elf_main_t * em, + char *section_name, + elf64_section_header_t * header, + void *contents, uword n_content_bytes); +uword elf_delete_segment_with_type (elf_main_t * em, + elf_segment_type_t segment_type); +void elf_set_dynamic_entries (elf_main_t * em); + +#endif /* included_clib_elf_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/elf_clib.c b/src/vppinfra/elf_clib.c new file mode 100644 index 00000000..7bb72ee3 --- /dev/null +++ b/src/vppinfra/elf_clib.c @@ -0,0 +1,377 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vppinfra/elf_clib.h> + +#include <stdlib.h> +#include <fcntl.h> +#include <sys/stat.h> + +typedef struct +{ + char **path; +} path_search_t; + +always_inline void +path_search_free (path_search_t * p) +{ + uword i; + for (i = 0; i < vec_len (p->path); i++) + vec_free (p->path[i]); + vec_free (p->path); +} + +static char ** +split_string (char *string, u8 delimiter) +{ + char **result = 0; + char *p, *start, *s; + + p = string; + while (1) + { + start = p; + while (*p != 0 && *p != delimiter) + p++; + s = 0; + vec_add (s, start, p - start); + vec_add1 (s, 0); + vec_add1 (result, s); + if (*p == 0) + break; + p++; + } + + return result; +} + +static int +file_exists_and_is_executable (char *dir, char *file) +{ + char *path = (char *) format (0, "%s/%s%c", dir, file, 0); + struct stat s; + uword yes; + + yes = (stat (path, &s) >= 0 + && S_ISREG (s.st_mode) + && 0 != (s.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))); + + vec_free (path); + + return yes; +} + +static char * +path_search (char *file) +{ + path_search_t ps; + uword i; + char *result; + + /* Relative or absolute path. */ + if (file[0] == '.' || file[0] == '/') + return file; + + if (getenv ("PATH") == 0) + return file; + + ps.path = split_string (getenv ("PATH"), ':'); + + for (i = 0; i < vec_len (ps.path); i++) + if (file_exists_and_is_executable (ps.path[i], file)) + break; + + result = 0; + if (i < vec_len (ps.path)) + result = (char *) format (0, "%s/%s%c", ps.path[i], file); + + path_search_free (&ps); + + return result; +} + +static clib_error_t * +clib_elf_parse_file (clib_elf_main_t * cem, + char *file_name, void *link_address) +{ + elf_main_t *em; + elf_section_t *s; + int fd; + struct stat fd_stat; + uword mmap_length = 0; + void *data = 0; + clib_error_t *error = 0; + + vec_add2 (cem->elf_mains, em, 1); + + fd = open (file_name, 0); + if (fd < 0) + { + error = clib_error_return_unix (0, "open `%s'", file_name); + goto done; + } + + if (fstat (fd, &fd_stat) < 0) + { + error = clib_error_return_unix (0, "fstat `%s'", file_name); + goto done; + } + mmap_length = fd_stat.st_size; + + data = mmap (0, mmap_length, PROT_READ, MAP_SHARED, fd, /* offset */ 0); + if (~pointer_to_uword (data) == 0) + { + error = clib_error_return_unix (0, "mmap `%s'", file_name); + goto done; + } + + error = elf_parse (em, data, mmap_length); + if (error) + goto done; + + /* Look for CLIB special sections. */ + { + char *section_name_start = CLIB_ELF_SECTION_ADD_PREFIX (); + uword section_name_start_len = strlen (section_name_start); + + vec_foreach (s, em->sections) + { + u8 *name = elf_section_name (em, s); + uword *p; + clib_elf_section_t *vs; + clib_elf_section_bounds_t *b; + + /* Section name must begin with CLIB_ELF_SECTION key. */ + if (memcmp (name, section_name_start, section_name_start_len)) + continue; + + name += section_name_start_len; + p = hash_get_mem (cem->section_by_name, name); + if (p) + vs = vec_elt_at_index (cem->sections, p[0]); + else + { + name = format (0, "%s%c", name, 0); + if (!cem->section_by_name) + cem->section_by_name = hash_create_string (0, sizeof (uword)); + hash_set_mem (cem->section_by_name, name, vec_len (cem->sections)); + vec_add2 (cem->sections, vs, 1); + vs->name = name; + } + + vec_add2 (vs->bounds, b, 1); + b->lo = link_address + s->header.exec_address; + b->hi = b->lo + s->header.file_size; + } + } + + /* Parse symbols for this file. */ + { + elf_symbol_table_t *t; + elf64_symbol_t *s; + + elf_parse_symbols (em); + vec_foreach (t, em->symbol_tables) + { + vec_foreach (s, t->symbols) + { + s->value += pointer_to_uword (link_address); + } + } + } + + /* No need to keep section contents around. */ + { + elf_section_t *s; + vec_foreach (s, em->sections) + { + if (s->header.type != ELF_SECTION_STRING_TABLE) + vec_free (s->contents); + } + } + +done: + if (error) + elf_main_free (em); + if (fd >= 0) + close (fd); + if (data) + munmap (data, mmap_length); + return error; +} + +#define __USE_GNU +#include <link.h> + +static int +add_section (struct dl_phdr_info *info, size_t size, void *opaque) +{ + clib_elf_main_t *cem = opaque; + clib_error_t *error; + char *name = (char *) info->dlpi_name; + void *addr = (void *) info->dlpi_addr; + uword is_main; + + is_main = strlen (name) == 0; + if (is_main) + { + static int done; + + /* Only do main program once. */ + if (done++) + return 0; + + name = path_search (cem->exec_path); + if (!name) + { + clib_error ("failed to find %s on PATH", cem->exec_path); + return 0; + } + addr = 0; + } + + error = clib_elf_parse_file (cem, name, addr); + if (error) + clib_error_report (error); + + if (is_main && name != cem->exec_path) + vec_free (name); + + return 0; +} + +static clib_elf_main_t clib_elf_main; + +void +clib_elf_main_init (char *exec_path) +{ + clib_elf_main_t *cem = &clib_elf_main; + + cem->exec_path = exec_path; + + dl_iterate_phdr (add_section, cem); +} + +clib_elf_section_bounds_t * +clib_elf_get_section_bounds (char *name) +{ + clib_elf_main_t *em = &clib_elf_main; + uword *p = hash_get (em->section_by_name, name); + return p ? vec_elt_at_index (em->sections, p[0])->bounds : 0; +} + +static uword +symbol_by_address_or_name (char *by_name, + uword by_address, clib_elf_symbol_t * s) +{ + clib_elf_main_t *cem = &clib_elf_main; + elf_main_t *em; + + vec_foreach (em, cem->elf_mains) + { + elf_symbol_table_t *t; + s->elf_main_index = em - cem->elf_mains; + vec_foreach (t, em->symbol_tables) + { + s->symbol_table_index = t - em->symbol_tables; + if (by_name) + { + uword *p = hash_get (t->symbol_by_name, by_name); + if (p) + { + s->symbol = vec_elt (t->symbols, p[0]); + return 1; + } + } + else + { + elf64_symbol_t *x; + /* FIXME linear search. */ + vec_foreach (x, t->symbols) + { + if (by_address >= x->value && by_address < x->value + x->size) + { + s->symbol = x[0]; + return 1; + } + } + } + } + } + + return 0; +} + +uword +clib_elf_symbol_by_name (char *by_name, clib_elf_symbol_t * s) +{ + return symbol_by_address_or_name (by_name, /* by_address */ 0, s); +} + +uword +clib_elf_symbol_by_address (uword by_address, clib_elf_symbol_t * s) +{ + return symbol_by_address_or_name ( /* by_name */ 0, by_address, s); +} + +u8 * +format_clib_elf_symbol (u8 * s, va_list * args) +{ + clib_elf_main_t *cem = &clib_elf_main; + clib_elf_symbol_t *sym = va_arg (*args, clib_elf_symbol_t *); + elf_main_t *em; + elf_symbol_table_t *t; + + if (!sym) + /* Just print table headings. */ + return format (s, "%U", format_elf_symbol, 0, 0, 0); + + else + { + em = vec_elt_at_index (cem->elf_mains, sym->elf_main_index); + t = vec_elt_at_index (em->symbol_tables, sym->symbol_table_index); + return format (s, "%U", format_elf_symbol, em, t, &sym->symbol); + } +} + +u8 * +format_clib_elf_symbol_with_address (u8 * s, va_list * args) +{ + uword address = va_arg (*args, uword); + clib_elf_main_t *cem = &clib_elf_main; + clib_elf_symbol_t sym; + elf_main_t *em; + elf_symbol_table_t *t; + + if (clib_elf_symbol_by_address (address, &sym)) + { + em = vec_elt_at_index (cem->elf_mains, sym.elf_main_index); + t = vec_elt_at_index (em->symbol_tables, sym.symbol_table_index); + s = format (s, "%s + 0x%wx", + elf_symbol_name (t, &sym.symbol), + address - sym.symbol.value); + } + else + s = format (s, "0x%wx", address); + + return s; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/elf_clib.h b/src/vppinfra/elf_clib.h new file mode 100644 index 00000000..25b928c2 --- /dev/null +++ b/src/vppinfra/elf_clib.h @@ -0,0 +1,144 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2012 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_elf_self_h +#define included_clib_elf_self_h + +#include <vppinfra/elf.h> +#include <vppinfra/hash.h> + +#define CLIB_ELF_SECTION_DATA_ALIGN 32 + +#define CLIB_ELF_SECTION_ADD_PREFIX(n) "clib_elf_section_" n + +/* Attribute used is so that static registrations work even if + variable is not referenced. */ +#define CLIB_ELF_SECTION(SECTION) \ + __attribute__ ((used, \ + aligned (CLIB_ELF_SECTION_DATA_ALIGN), \ + section (CLIB_ELF_SECTION_ADD_PREFIX (SECTION)))) + +/* Given pointer to previous data A get next pointer. EXTRA gives extra + space beyond A + 1 used in object. */ +#define clib_elf_section_data_next(a,extra) \ + uword_to_pointer (round_pow2 (pointer_to_uword (a + 1) + (extra), \ + CLIB_ELF_SECTION_DATA_ALIGN), \ + void *) + +typedef struct +{ + void *lo, *hi; +} clib_elf_section_bounds_t; + +typedef struct +{ + /* Vector of bounds for this section. Multiple shared objects may have instances + of the same sections. */ + clib_elf_section_bounds_t *bounds; + + /* Name of ELF section (e.g. .text). */ + u8 *name; +} clib_elf_section_t; + +typedef struct +{ + /* Vector of sections. */ + clib_elf_section_t *sections; + + /* Hash map of name to section index. */ + uword *section_by_name; + + /* Unix path that we were exec()ed with. */ + char *exec_path; + + elf_main_t *elf_mains; +} clib_elf_main_t; + +always_inline void +clib_elf_main_free (clib_elf_main_t * m) +{ + clib_elf_section_t *s; + vec_foreach (s, m->sections) + { + vec_free (s->bounds); + vec_free (s->name); + } + vec_free (m->sections); + hash_free (m->section_by_name); + + { + elf_main_t *em; + vec_foreach (em, m->elf_mains) + { + elf_main_free (em); + } + vec_free (m->elf_mains); + } +} + +/* Call with exec_path equal to argv[0] from C main. */ +void clib_elf_main_init (char *exec_path); + +clib_elf_section_bounds_t *clib_elf_get_section_bounds (char *name); + +typedef struct +{ + /* The symbol. */ + elf64_symbol_t symbol; + + /* elf_main_t where symbol came from. */ + u32 elf_main_index; + + /* Symbol table in elf_main_t where this symbol came from. */ + u32 symbol_table_index; +} clib_elf_symbol_t; + +/* Returns 1 if found; otherwise zero. */ +uword clib_elf_symbol_by_name (char *name, clib_elf_symbol_t * result); +uword clib_elf_symbol_by_address (uword address, clib_elf_symbol_t * result); + +format_function_t format_clib_elf_symbol, format_clib_elf_symbol_with_address; + +#endif /* included_clib_elf_self_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/elog.c b/src/vppinfra/elog.c new file mode 100644 index 00000000..182ca127 --- /dev/null +++ b/src/vppinfra/elog.c @@ -0,0 +1,1113 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005,2009 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/elog.h> +#include <vppinfra/cache.h> +#include <vppinfra/error.h> +#include <vppinfra/format.h> +#include <vppinfra/hash.h> +#include <vppinfra/math.h> + +static inline void +elog_lock (elog_main_t * em) +{ + if (PREDICT_FALSE (em->lock != 0)) + while (__sync_lock_test_and_set (em->lock, 1)) + ; +} + +static inline void +elog_unlock (elog_main_t * em) +{ + if (PREDICT_FALSE (em->lock != 0)) + { + CLIB_MEMORY_BARRIER (); + *em->lock = 0; + } +} + +/* Non-inline version. */ +void * +elog_event_data (elog_main_t * em, + elog_event_type_t * type, elog_track_t * track, u64 cpu_time) +{ + return elog_event_data_inline (em, type, track, cpu_time); +} + +static void +new_event_type (elog_main_t * em, uword i) +{ + elog_event_type_t *t = vec_elt_at_index (em->event_types, i); + + if (!em->event_type_by_format) + em->event_type_by_format = + hash_create_vec ( /* size */ 0, sizeof (u8), sizeof (uword)); + + t->type_index_plus_one = i + 1; + hash_set_mem (em->event_type_by_format, t->format, i); +} + +static uword +find_or_create_type (elog_main_t * em, elog_event_type_t * t) +{ + uword *p = hash_get_mem (em->event_type_by_format, t->format); + uword i; + + if (p) + i = p[0]; + else + { + i = vec_len (em->event_types); + vec_add1 (em->event_types, t[0]); + new_event_type (em, i); + } + + return i; +} + +/* External function to register types. */ +word +elog_event_type_register (elog_main_t * em, elog_event_type_t * t) +{ + elog_event_type_t *static_type = t; + word l; + + elog_lock (em); + + /* Multiple simultaneous registration attempts, */ + if (t->type_index_plus_one > 0) + { + elog_unlock (em); + return t->type_index_plus_one - 1; + } + + l = vec_len (em->event_types); + + t->type_index_plus_one = 1 + l; + + ASSERT (t->format); + + /* If format args are not specified try to be smart about providing defaults + so most of the time user does not have to specify them. */ + if (!t->format_args) + { + uword i, l; + char *this_arg; + + l = strlen (t->format); + for (i = 0; i < l; i++) + { + if (t->format[i] != '%') + continue; + if (i + 1 >= l) + continue; + if (t->format[i + 1] == '%') /* %% */ + continue; + + switch (t->format[i + 1]) + { + default: + case 'd': + case 'x': + case 'u': + this_arg = "i4"; /* size of u32 */ + break; + case 'f': + this_arg = "f8"; /* defaults to f64 */ + break; + case 's': + this_arg = "s0"; /* defaults to null terminated string. */ + break; + } + + t->format_args = + (char *) format ((u8 *) t->format_args, "%s", this_arg); + } + + /* Null terminate. */ + vec_add1 (t->format_args, 0); + } + + vec_add1 (em->event_types, t[0]); + + t = em->event_types + l; + + /* Make copies of strings for hashing etc. */ + if (t->function) + t->format = (char *) format (0, "%s %s%c", t->function, t->format, 0); + else + t->format = (char *) format (0, "%s%c", t->format, 0); + + t->format_args = (char *) format (0, "%s%c", t->format_args, 0); + + /* Construct string table. */ + { + uword i; + t->n_enum_strings = static_type->n_enum_strings; + for (i = 0; i < t->n_enum_strings; i++) + { + if (!static_type->enum_strings[i]) + static_type->enum_strings[i] = "MISSING"; + vec_add1 (t->enum_strings_vector, + (char *) format (0, "%s%c", static_type->enum_strings[i], + 0)); + } + } + + new_event_type (em, l); + elog_unlock (em); + + return l; +} + +word +elog_track_register (elog_main_t * em, elog_track_t * t) +{ + word l; + + elog_lock (em); + + l = vec_len (em->tracks); + + t->track_index_plus_one = 1 + l; + + ASSERT (t->name); + + vec_add1 (em->tracks, t[0]); + + t = em->tracks + l; + + t->name = (char *) format (0, "%s%c", t->name, 0); + + elog_unlock (em); + + return l; +} + +static uword +parse_2digit_decimal (char *p, uword * number) +{ + uword i = 0; + u8 digits[2]; + + digits[0] = digits[1] = 0; + while (p[i] >= '0' && p[i] <= '9') + { + if (i >= 2) + break; + digits[i] = p[i] - '0'; + i++; + } + + if (i >= 1 && i <= 2) + { + if (i == 1) + *number = digits[0]; + else + *number = 10 * digits[0] + digits[1]; + return i; + } + else + return 0; +} + +static u8 * +fixed_format (u8 * s, char *fmt, char *result, uword * result_len) +{ + char *f = fmt; + char *percent; + uword l = 0; + + while (1) + { + if (f[0] == 0) + break; + if (f[0] == '%' && f[1] != '%') + break; + f++; + } + if (f > fmt) + vec_add (s, fmt, f - fmt); + + if (f[0] != '%') + goto done; + + /* Skip percent. */ + percent = f++; + + /* Skip possible +-= justification. */ + f += f[0] == '+' || f[0] == '-' || f[0] == '='; + + /* Skip possible X.Y width. */ + while ((f[0] >= '0' && f[0] <= '9') || f[0] == '.') + f++; + + /* Skip wlL as in e.g. %Ld. */ + f += f[0] == 'w' || f[0] == 'l' || f[0] == 'L'; + + /* Finally skip format letter. */ + f += f[0] != 0; + + ASSERT (*result_len > f - percent); + l = clib_min (f - percent, *result_len - 1); + clib_memcpy (result, percent, l); + result[l] = 0; + +done: + *result_len = f - fmt; + return s; +} + +u8 * +format_elog_event (u8 * s, va_list * va) +{ + elog_main_t *em = va_arg (*va, elog_main_t *); + elog_event_t *e = va_arg (*va, elog_event_t *); + elog_event_type_t *t; + char *a, *f; + void *d = (u8 *) e->data; + char arg_format[64]; + + t = vec_elt_at_index (em->event_types, e->type); + + f = t->format; + a = t->format_args; + while (1) + { + uword n_bytes = 0, n_digits, f_bytes = 0; + + f_bytes = sizeof (arg_format); + s = fixed_format (s, f, arg_format, &f_bytes); + f += f_bytes; + + if (a == 0 || a[0] == 0) + { + /* Format must also be at end. */ + ASSERT (f[0] == 0); + break; + } + + /* Don't go past end of event data. */ + ASSERT (d < (void *) (e->data + sizeof (e->data))); + + n_digits = parse_2digit_decimal (a + 1, &n_bytes); + switch (a[0]) + { + case 'i': + case 't': + case 'T': + { + u32 i = 0; + u64 l = 0; + + if (n_bytes == 1) + i = ((u8 *) d)[0]; + else if (n_bytes == 2) + i = clib_mem_unaligned (d, u16); + else if (n_bytes == 4) + i = clib_mem_unaligned (d, u32); + else if (n_bytes == 8) + l = clib_mem_unaligned (d, u64); + else + ASSERT (0); + if (a[0] == 't') + { + char *e = + vec_elt (t->enum_strings_vector, n_bytes == 8 ? l : i); + s = format (s, arg_format, e); + } + else if (a[0] == 'T') + { + char *e = + vec_elt_at_index (em->string_table, n_bytes == 8 ? l : i); + s = format (s, arg_format, e); + } + else if (n_bytes == 8) + s = format (s, arg_format, l); + else + s = format (s, arg_format, i); + } + break; + + case 'f': + { + f64 x = 0; + if (n_bytes == 4) + x = clib_mem_unaligned (d, f32); + else if (n_bytes == 8) + x = clib_mem_unaligned (d, f64); + else + ASSERT (0); + s = format (s, arg_format, x); + } + break; + + case 's': + s = format (s, arg_format, d); + if (n_bytes == 0) + n_bytes = strlen (d) + 1; + break; + + default: + ASSERT (0); + break; + } + + ASSERT (n_digits > 0 && n_digits <= 2); + a += 1 + n_digits; + d += n_bytes; + } + + return s; +} + +u8 * +format_elog_track (u8 * s, va_list * va) +{ + elog_main_t *em = va_arg (*va, elog_main_t *); + elog_event_t *e = va_arg (*va, elog_event_t *); + elog_track_t *t = vec_elt_at_index (em->tracks, e->track); + return format (s, "%s", t->name); +} + +void +elog_time_now (elog_time_stamp_t * et) +{ + u64 cpu_time_now, os_time_now_nsec; + struct timespec ts; + +#ifdef CLIB_UNIX + { +#include <sys/syscall.h> + syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts); + cpu_time_now = clib_cpu_time_now (); + /* Subtract 3/30/2017's worth of seconds to retain precision */ + os_time_now_nsec = 1e9 * (ts.tv_sec - 1490885108) + ts.tv_nsec; + } +#else + cpu_time_now = clib_cpu_time_now (); + os_time_now_nsec = 0; +#endif + + et->cpu = cpu_time_now; + et->os_nsec = os_time_now_nsec; +} + +always_inline i64 +elog_time_stamp_diff_os_nsec (elog_time_stamp_t * t1, elog_time_stamp_t * t2) +{ + return (i64) t1->os_nsec - (i64) t2->os_nsec; +} + +always_inline i64 +elog_time_stamp_diff_cpu (elog_time_stamp_t * t1, elog_time_stamp_t * t2) +{ + return (i64) t1->cpu - (i64) t2->cpu; +} + +always_inline f64 +elog_nsec_per_clock (elog_main_t * em) +{ + return ((f64) elog_time_stamp_diff_os_nsec (&em->serialize_time, + &em->init_time) + / (f64) elog_time_stamp_diff_cpu (&em->serialize_time, + &em->init_time)); +} + +void +elog_alloc (elog_main_t * em, u32 n_events) +{ + if (em->event_ring) + vec_free (em->event_ring); + + /* Ring size must be a power of 2. */ + em->event_ring_size = n_events = max_pow2 (n_events); + + /* Leave an empty ievent at end so we can always speculatively write + and event there (possibly a long form event). */ + vec_resize_aligned (em->event_ring, n_events, CLIB_CACHE_LINE_BYTES); +} + +void +elog_init (elog_main_t * em, u32 n_events) +{ + memset (em, 0, sizeof (em[0])); + + em->lock = 0; + + if (n_events > 0) + elog_alloc (em, n_events); + + clib_time_init (&em->cpu_timer); + + em->n_total_events_disable_limit = ~0; + + /* Make track 0. */ + em->default_track.name = "default"; + elog_track_register (em, &em->default_track); + + elog_time_now (&em->init_time); +} + +/* Returns number of events in ring and start index. */ +static uword +elog_event_range (elog_main_t * em, uword * lo) +{ + uword l = em->event_ring_size; + u64 i = em->n_total_events; + + /* Ring never wrapped? */ + if (i <= (u64) l) + { + if (lo) + *lo = 0; + return i; + } + else + { + if (lo) + *lo = i & (l - 1); + return l; + } +} + +elog_event_t * +elog_peek_events (elog_main_t * em) +{ + elog_event_t *e, *f, *es = 0; + uword i, j, n; + + n = elog_event_range (em, &j); + for (i = 0; i < n; i++) + { + vec_add2 (es, e, 1); + f = vec_elt_at_index (em->event_ring, j); + e[0] = f[0]; + + /* Convert absolute time from cycles to seconds from start. */ + e->time = + (e->time_cycles - + em->init_time.cpu) * em->cpu_timer.seconds_per_clock; + + j = (j + 1) & (em->event_ring_size - 1); + } + + return es; +} + +/* Add a formatted string to the string table. */ +u32 +elog_string (elog_main_t * em, char *fmt, ...) +{ + u32 offset; + va_list va; + + va_start (va, fmt); + offset = vec_len (em->string_table); + em->string_table = (char *) va_format ((u8 *) em->string_table, fmt, &va); + va_end (va); + + /* Null terminate string if it is not already. */ + if (vec_end (em->string_table)[-1] != 0) + vec_add1 (em->string_table, 0); + + return offset; +} + +elog_event_t * +elog_get_events (elog_main_t * em) +{ + if (!em->events) + em->events = elog_peek_events (em); + return em->events; +} + +static void +maybe_fix_string_table_offset (elog_event_t * e, + elog_event_type_t * t, u32 offset) +{ + void *d = (u8 *) e->data; + char *a; + + if (offset == 0) + return; + + a = t->format_args; + + while (1) + { + uword n_bytes = 0, n_digits; + + if (a[0] == 0) + break; + + /* Don't go past end of event data. */ + ASSERT (d < (void *) (e->data + sizeof (e->data))); + + n_digits = parse_2digit_decimal (a + 1, &n_bytes); + switch (a[0]) + { + case 'T': + ASSERT (n_bytes == 4); + clib_mem_unaligned (d, u32) += offset; + break; + + case 'i': + case 't': + case 'f': + case 's': + break; + + default: + ASSERT (0); + break; + } + + ASSERT (n_digits > 0 && n_digits <= 2); + a += 1 + n_digits; + d += n_bytes; + } +} + +static int +elog_cmp (void *a1, void *a2) +{ + elog_event_t *e1 = a1; + elog_event_t *e2 = a2; + + if (e1->time < e2->time) + return -1; + + if (e1->time > e2->time) + return 1; + + return 0; +} + +/* + * merge two event logs. Complicated and cranky. + */ +void +elog_merge (elog_main_t * dst, u8 * dst_tag, elog_main_t * src, u8 * src_tag, + f64 align_tweak) +{ + elog_event_t *e; + uword l; + u32 string_table_offset_for_src_events; + u32 track_offset_for_src_tracks; + elog_track_t newt; + int i; + + memset (&newt, 0, sizeof (newt)); + + /* Acquire src and dst events */ + elog_get_events (src); + elog_get_events (dst); + + string_table_offset_for_src_events = vec_len (dst->string_table); + vec_append (dst->string_table, src->string_table); + + l = vec_len (dst->events); + vec_append (dst->events, src->events); + + /* Prepend the supplied tag (if any) to all dst track names */ + if (dst_tag) + { + for (i = 0; i < vec_len (dst->tracks); i++) + { + elog_track_t *t = vec_elt_at_index (dst->tracks, i); + char *new_name; + + new_name = (char *) format (0, "%s:%s%c", dst_tag, t->name, 0); + vec_free (t->name); + t->name = new_name; + } + } + + /* + * Remember where we started allocating new tracks while merging + */ + track_offset_for_src_tracks = vec_len (dst->tracks); + + /* Copy / tag source tracks */ + for (i = 0; i < vec_len (src->tracks); i++) + { + elog_track_t *t = vec_elt_at_index (src->tracks, i); + if (src_tag) + newt.name = (char *) format (0, "%s:%s%c", src_tag, t->name, 0); + else + newt.name = (char *) format (0, "%s%c", t->name, 0); + (void) elog_track_register (dst, &newt); + vec_free (newt.name); + } + + /* Across all (copied) src events... */ + for (e = dst->events + l; e < vec_end (dst->events); e++) + { + elog_event_type_t *t = vec_elt_at_index (src->event_types, e->type); + + /* Remap type from src -> dst. */ + e->type = find_or_create_type (dst, t); + + /* Remap string table offsets for 'T' format args */ + maybe_fix_string_table_offset (e, t, + string_table_offset_for_src_events); + + /* Remap track */ + e->track += track_offset_for_src_tracks; + } + + /* Adjust event times for relative starting times of event streams. */ + { + f64 dt_event, dt_os_nsec, dt_clock_nsec; + + /* Set clock parameters if dst was not generated by unserialize. */ + if (dst->serialize_time.cpu == 0) + { + dst->init_time = src->init_time; + dst->serialize_time = src->serialize_time; + dst->nsec_per_cpu_clock = src->nsec_per_cpu_clock; + } + + dt_os_nsec = + elog_time_stamp_diff_os_nsec (&src->init_time, &dst->init_time); + + dt_event = dt_os_nsec; + dt_clock_nsec = + (elog_time_stamp_diff_cpu (&src->init_time, &dst->init_time) * .5 * + (dst->nsec_per_cpu_clock + src->nsec_per_cpu_clock)); + + /* + * Heuristic to see if src/dst came from same time source. + * If frequencies are "the same" and os clock and cpu clock agree + * to within 100e-9 secs about time difference between src/dst + * init_time, then we use cpu clock. Otherwise we use OS clock. + * + * When merging event logs from different systems, time paradoxes + * at the O(1ms) level are to be expected. Hence, the "align_tweak" + * parameter. If two events logged on different processors are known + * to occur in a specific order - and with a reasonably-estimated + * interval - supply a non-zero "align_tweak" parameter + */ + if (fabs (src->nsec_per_cpu_clock - dst->nsec_per_cpu_clock) < 1e-2 + && fabs (dt_os_nsec - dt_clock_nsec) < 100) + dt_event = dt_clock_nsec; + + /* Convert to seconds. */ + dt_event *= 1e-9; + + /* + * Move the earlier set of events later, to avoid creating + * events which preceed the Big Bang (aka have negative timestamps). + * + * Not to any scale, we have something like the following picture: + * + * DST capture start point + * ^ + * +--- dt_event --+ + * v + * SRC capture start point + * + * In this case dt_event is positive, src started after dst, + * to put src events onto a common timebase we have to move them + * forward in time. Naturally, the opposite case is + * possible, too: dt_event will be negative, and so we have to + * move dst events forward in time by the |dt_event|. + * In both cases, we add align_tweak. + */ + if (dt_event > 0) + { + /* Src started after dst. */ + for (e = dst->events + l; e < vec_end (dst->events); e++) + e->time += dt_event + align_tweak; + } + else + { + /* Dst started after src. */ + dt_event = -dt_event; + for (e = dst->events + 0; e < dst->events + l; e++) + e->time += dt_event + align_tweak; + } + } + + /* Sort events by increasing time. */ + vec_sort_with_function (dst->events, elog_cmp); + + dst->n_total_events = vec_len (dst->events); + + /* Recreate the event ring or the results won't serialize */ + { + int i; + + ASSERT (dst->cpu_timer.seconds_per_clock); + + elog_alloc (dst, vec_len (dst->events)); + for (i = 0; i < vec_len (dst->events); i++) + { + elog_event_t *es, *ed; + + es = dst->events + i; + ed = dst->event_ring + i; + + ed[0] = es[0]; + } + } +} + +static void +serialize_elog_event (serialize_main_t * m, va_list * va) +{ + elog_main_t *em = va_arg (*va, elog_main_t *); + elog_event_t *e = va_arg (*va, elog_event_t *); + elog_event_type_t *t = vec_elt_at_index (em->event_types, e->type); + u8 *d = e->data; + u8 *p = (u8 *) t->format_args; + + serialize_integer (m, e->type, sizeof (e->type)); + serialize_integer (m, e->track, sizeof (e->track)); + serialize (m, serialize_f64, e->time); + + while (*p) + { + uword n_digits, n_bytes = 0; + + n_digits = parse_2digit_decimal ((char *) p + 1, &n_bytes); + + switch (p[0]) + { + case 'i': + case 't': + case 'T': + if (n_bytes == 1) + serialize_integer (m, d[0], sizeof (u8)); + else if (n_bytes == 2) + serialize_integer (m, clib_mem_unaligned (d, u16), sizeof (u16)); + else if (n_bytes == 4) + serialize_integer (m, clib_mem_unaligned (d, u32), sizeof (u32)); + else if (n_bytes == 8) + serialize (m, serialize_64, clib_mem_unaligned (d, u64)); + else + ASSERT (0); + break; + + case 's': + serialize_cstring (m, (char *) d); + if (n_bytes == 0) + n_bytes = strlen ((char *) d) + 1; + break; + + case 'f': + if (n_bytes == 4) + serialize (m, serialize_f32, clib_mem_unaligned (d, f32)); + else if (n_bytes == 8) + serialize (m, serialize_f64, clib_mem_unaligned (d, f64)); + else + ASSERT (0); + break; + + default: + ASSERT (0); + break; + } + + p += 1 + n_digits; + d += n_bytes; + } +} + +static void +unserialize_elog_event (serialize_main_t * m, va_list * va) +{ + elog_main_t *em = va_arg (*va, elog_main_t *); + elog_event_t *e = va_arg (*va, elog_event_t *); + elog_event_type_t *t; + u8 *p, *d; + + { + u16 tmp[2]; + + unserialize_integer (m, &tmp[0], sizeof (e->type)); + unserialize_integer (m, &tmp[1], sizeof (e->track)); + + e->type = tmp[0]; + e->track = tmp[1]; + + /* Make sure it fits. */ + ASSERT (e->type == tmp[0]); + ASSERT (e->track == tmp[1]); + } + + t = vec_elt_at_index (em->event_types, e->type); + + unserialize (m, unserialize_f64, &e->time); + + d = e->data; + p = (u8 *) t->format_args; + + while (p && *p) + { + uword n_digits, n_bytes = 0; + u32 tmp; + + n_digits = parse_2digit_decimal ((char *) p + 1, &n_bytes); + + switch (p[0]) + { + case 'i': + case 't': + case 'T': + if (n_bytes == 1) + { + unserialize_integer (m, &tmp, sizeof (u8)); + d[0] = tmp; + } + else if (n_bytes == 2) + { + unserialize_integer (m, &tmp, sizeof (u16)); + clib_mem_unaligned (d, u16) = tmp; + } + else if (n_bytes == 4) + { + unserialize_integer (m, &tmp, sizeof (u32)); + clib_mem_unaligned (d, u32) = tmp; + } + else if (n_bytes == 8) + { + u64 x; + unserialize (m, unserialize_64, &x); + clib_mem_unaligned (d, u64) = x; + } + else + ASSERT (0); + break; + + case 's': + { + char *t; + unserialize_cstring (m, &t); + if (n_bytes == 0) + n_bytes = strlen (t) + 1; + clib_memcpy (d, t, clib_min (n_bytes, vec_len (t))); + vec_free (t); + break; + } + + case 'f': + if (n_bytes == 4) + { + f32 x; + unserialize (m, unserialize_f32, &x); + clib_mem_unaligned (d, f32) = x; + } + else if (n_bytes == 8) + { + f64 x; + unserialize (m, unserialize_f64, &x); + clib_mem_unaligned (d, f64) = x; + } + else + ASSERT (0); + break; + + default: + ASSERT (0); + break; + } + + p += 1 + n_digits; + d += n_bytes; + } +} + +static void +serialize_elog_event_type (serialize_main_t * m, va_list * va) +{ + elog_event_type_t *t = va_arg (*va, elog_event_type_t *); + int n = va_arg (*va, int); + int i, j; + for (i = 0; i < n; i++) + { + serialize_cstring (m, t[i].format); + serialize_cstring (m, t[i].format_args); + serialize_integer (m, t[i].type_index_plus_one, + sizeof (t->type_index_plus_one)); + serialize_integer (m, t[i].n_enum_strings, + sizeof (t[i].n_enum_strings)); + for (j = 0; j < t[i].n_enum_strings; j++) + serialize_cstring (m, t[i].enum_strings_vector[j]); + } +} + +static void +unserialize_elog_event_type (serialize_main_t * m, va_list * va) +{ + elog_event_type_t *t = va_arg (*va, elog_event_type_t *); + int n = va_arg (*va, int); + int i, j; + for (i = 0; i < n; i++) + { + unserialize_cstring (m, &t[i].format); + unserialize_cstring (m, &t[i].format_args); + unserialize_integer (m, &t[i].type_index_plus_one, + sizeof (t->type_index_plus_one)); + unserialize_integer (m, &t[i].n_enum_strings, + sizeof (t[i].n_enum_strings)); + vec_resize (t[i].enum_strings_vector, t[i].n_enum_strings); + for (j = 0; j < t[i].n_enum_strings; j++) + unserialize_cstring (m, &t[i].enum_strings_vector[j]); + } +} + +static void +serialize_elog_track (serialize_main_t * m, va_list * va) +{ + elog_track_t *t = va_arg (*va, elog_track_t *); + int n = va_arg (*va, int); + int i; + for (i = 0; i < n; i++) + { + serialize_cstring (m, t[i].name); + } +} + +static void +unserialize_elog_track (serialize_main_t * m, va_list * va) +{ + elog_track_t *t = va_arg (*va, elog_track_t *); + int n = va_arg (*va, int); + int i; + for (i = 0; i < n; i++) + { + unserialize_cstring (m, &t[i].name); + } +} + +static void +serialize_elog_time_stamp (serialize_main_t * m, va_list * va) +{ + elog_time_stamp_t *st = va_arg (*va, elog_time_stamp_t *); + serialize (m, serialize_64, st->os_nsec); + serialize (m, serialize_64, st->cpu); +} + +static void +unserialize_elog_time_stamp (serialize_main_t * m, va_list * va) +{ + elog_time_stamp_t *st = va_arg (*va, elog_time_stamp_t *); + unserialize (m, unserialize_64, &st->os_nsec); + unserialize (m, unserialize_64, &st->cpu); +} + +static char *elog_serialize_magic = "elog v0"; + +void +serialize_elog_main (serialize_main_t * m, va_list * va) +{ + elog_main_t *em = va_arg (*va, elog_main_t *); + int flush_ring = va_arg (*va, int); + elog_event_t *e; + + serialize_magic (m, elog_serialize_magic, strlen (elog_serialize_magic)); + + serialize_integer (m, em->event_ring_size, sizeof (u32)); + + elog_time_now (&em->serialize_time); + serialize (m, serialize_elog_time_stamp, &em->serialize_time); + serialize (m, serialize_elog_time_stamp, &em->init_time); + + vec_serialize (m, em->event_types, serialize_elog_event_type); + vec_serialize (m, em->tracks, serialize_elog_track); + vec_serialize (m, em->string_table, serialize_vec_8); + + /* Free old events (cached) in case they have changed. */ + if (flush_ring) + { + vec_free (em->events); + elog_get_events (em); + } + + serialize_integer (m, vec_len (em->events), sizeof (u32)); + + /* SMP logs can easily have local time paradoxes... */ + vec_sort_with_function (em->events, elog_cmp); + + vec_foreach (e, em->events) serialize (m, serialize_elog_event, em, e); +} + +void +unserialize_elog_main (serialize_main_t * m, va_list * va) +{ + elog_main_t *em = va_arg (*va, elog_main_t *); + uword i; + u32 rs; + + unserialize_check_magic (m, elog_serialize_magic, + strlen (elog_serialize_magic)); + + unserialize_integer (m, &rs, sizeof (u32)); + em->event_ring_size = rs; + elog_init (em, em->event_ring_size); + + unserialize (m, unserialize_elog_time_stamp, &em->serialize_time); + unserialize (m, unserialize_elog_time_stamp, &em->init_time); + em->nsec_per_cpu_clock = elog_nsec_per_clock (em); + + vec_unserialize (m, &em->event_types, unserialize_elog_event_type); + for (i = 0; i < vec_len (em->event_types); i++) + new_event_type (em, i); + + vec_unserialize (m, &em->tracks, unserialize_elog_track); + vec_unserialize (m, &em->string_table, unserialize_vec_8); + + { + u32 ne; + elog_event_t *e; + + unserialize_integer (m, &ne, sizeof (u32)); + vec_resize (em->events, ne); + vec_foreach (e, em->events) + unserialize (m, unserialize_elog_event, em, e); + } +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/elog.h b/src/vppinfra/elog.h new file mode 100644 index 00000000..05085b26 --- /dev/null +++ b/src/vppinfra/elog.h @@ -0,0 +1,567 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005,2009 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +/* High speed event logger */ + +/** \file + The fine-grained event logger allows lightweight, thread-safe + event logging at minimum cost. In typical operation, logging + a single event costs around 80ns on x86_64. It's appropriate + for at-least per-frame event-logging in vector packet processing. + + See https://wiki.fd.io/view/VPP/elog for more information. +*/ + +#ifndef included_clib_elog_h +#define included_clib_elog_h + +#include <vppinfra/cache.h> +#include <vppinfra/error.h> /* for ASSERT */ +#include <vppinfra/serialize.h> +#include <vppinfra/time.h> /* for clib_cpu_time_now */ +#include <vppinfra/mhash.h> + +typedef struct +{ + union + { + /** Absolute time stamp in CPU clock cycles. */ + u64 time_cycles; + + /** Absolute time as floating point number in seconds. */ + f64 time; + }; + + /** Event type index. */ + u16 type; + + /** Track for this event. Tracks allow events to be sorted and + displayed by track. Think of 2 dimensional display with time and + track being the x and y axes. */ + u16 track; + + /** 20-bytes of data follows, pads to 32 bytes. */ + u8 data[20]; +} elog_event_t; + +typedef struct +{ + /** Type index plus one assigned to this type. + This is used to mark type as seen. */ + u32 type_index_plus_one; + + /** String table as a vector constructed when type is registered. */ + char **enum_strings_vector; + + /** Format string. (example: "my-event (%d,%d)"). */ + char *format; + + /** Specifies how arguments to format are parsed from event data. + String of characters '0' '1' or '2' '3' to specify log2 size of data + (e.g. for u8, u16, u32 or u64), + 's' means a null-terminated C string + 't' means argument is an index into enum string table for this type. + 'e' is a float, + 'f' is a double. */ + char *format_args; + + /** Function name generating event. */ + char *function; + + /** Number of elements in string enum table. */ + u32 n_enum_strings; + + /** String table for enum/number to string formatting. */ + char *enum_strings[]; +} elog_event_type_t; + +typedef struct +{ + /** Track name vector. */ + char *name; + + /** Set to one when track has been added to + main structure. */ + u32 track_index_plus_one; +} elog_track_t; + +typedef struct +{ + /** CPU cycle counter. */ + u64 cpu; + + /** OS timer in nano secs since epoch 3/30/2017, see elog_time_now() */ + u64 os_nsec; +} elog_time_stamp_t; + +typedef struct +{ + /** Total number of events in buffer. */ + u32 n_total_events; + + /** When count reaches limit logging is disabled. This is + used for event triggers. */ + u32 n_total_events_disable_limit; + + /** Dummy event to use when logger is disabled. */ + elog_event_t dummy_event; + + /** Power of 2 number of elements in ring. */ + uword event_ring_size; + + /** Vector of events (circular buffer). Power of 2 size. + Used when events are being collected. */ + elog_event_t *event_ring; + + /** Vector of event types. */ + elog_event_type_t *event_types; + + /** Hash table mapping type format to type index. */ + uword *event_type_by_format; + + /** Events may refer to strings in string table. */ + char *string_table; + + /** Vector of tracks. */ + elog_track_t *tracks; + + /** Default track. */ + elog_track_t default_track; + + /** Place holder for CPU clock frequency. */ + clib_time_t cpu_timer; + + /** Timestamps */ + elog_time_stamp_t init_time, serialize_time; + + /** SMP lock, non-zero means locking required */ + uword *lock; + + /** Use serialize_time and init_time to give estimate for + cpu clock frequency. */ + f64 nsec_per_cpu_clock; + + /** Vector of events converted to generic form after collection. */ + elog_event_t *events; +} elog_main_t; + +/** @brief Return number of events in the event-log buffer + @param em elog_main_t * + @return number of events in the buffer +*/ + +always_inline uword +elog_n_events_in_buffer (elog_main_t * em) +{ + return clib_min (em->n_total_events, em->event_ring_size); +} + +/** @brief Return number of events which can fit in the event buffer + @param em elog_main_t * + @return number of events which can fit in the buffer +*/ +always_inline uword +elog_buffer_capacity (elog_main_t * em) +{ + return em->event_ring_size; +} + +/** @brief Reset the event buffer + @param em elog_main_t * +*/ +always_inline void +elog_reset_buffer (elog_main_t * em) +{ + em->n_total_events = 0; + em->n_total_events_disable_limit = ~0; +} + +/** @brief Enable or disable event logging + @param em elog_main_t * +*/ +always_inline void +elog_enable_disable (elog_main_t * em, int is_enabled) +{ + em->n_total_events = 0; + em->n_total_events_disable_limit = is_enabled ? ~0 : 0; +} + +/** @brief disable logging after specified number of ievents have been logged. + + This is used as a "debug trigger" when a certain event has occurred. + Events will be logged both before and after the "event" but the + event will not be lost as long as N < RING_SIZE. + + @param em elog_main_t * + @param n uword number of events before disabling event logging +*/ +always_inline void +elog_disable_after_events (elog_main_t * em, uword n) +{ + em->n_total_events_disable_limit = em->n_total_events + n; +} + +/* @brief mid-buffer logic-analyzer trigger + + Currently, only midpoint triggering is supported, but it's pretty obvious + how to generalize the scheme. + @param em elog_main_t * +*/ +always_inline void +elog_disable_trigger (elog_main_t * em) +{ + em->n_total_events_disable_limit = + em->n_total_events + vec_len (em->event_ring) / 2; +} + +/** @brief register an event type + @param em elog_main_t * + @param t elog_event_type_t * event to register + @return type index + @warning Typically not called directly +*/ + +word elog_event_type_register (elog_main_t * em, elog_event_type_t * t); + +/** @brief register an event track + @param em elog_main_t * + @param t elog_track_t * track to register + @return track index + @note this function is often called directly +*/ +word elog_track_register (elog_main_t * em, elog_track_t * t); + +/** @brief event logging enabled predicate + @param em elog_main_t * + @return 1 if enabled, 0 if not enabled +*/ +always_inline uword +elog_is_enabled (elog_main_t * em) +{ + return em->n_total_events < em->n_total_events_disable_limit; +} + +/** @brief Allocate an event to be filled in by the caller + + Not normally called directly; this function underlies the + ELOG_DATA and ELOG_TRACK_DATA macros + + @param em elog_main_t * + @param type elog_event_type_t * type + @param track elog_track_t * track + @param cpu_time u64 current cpu tick value + @returns event to be filled in +*/ +always_inline void * +elog_event_data_inline (elog_main_t * em, + elog_event_type_t * type, + elog_track_t * track, u64 cpu_time) +{ + elog_event_t *e; + uword ei; + word type_index, track_index; + + /* Return the user dummy memory to scribble data into. */ + if (PREDICT_FALSE (!elog_is_enabled (em))) + return em->dummy_event.data; + + type_index = (word) type->type_index_plus_one - 1; + track_index = (word) track->track_index_plus_one - 1; + if (PREDICT_FALSE ((type_index | track_index) < 0)) + { + if (type_index < 0) + type_index = elog_event_type_register (em, type); + if (track_index < 0) + track_index = elog_track_register (em, track); + } + + ASSERT (track_index < vec_len (em->tracks)); + ASSERT (is_pow2 (vec_len (em->event_ring))); + + if (em->lock) + ei = clib_smp_atomic_add (&em->n_total_events, 1); + else + ei = em->n_total_events++; + + ei &= em->event_ring_size - 1; + e = vec_elt_at_index (em->event_ring, ei); + + e->time_cycles = cpu_time; + e->type = type_index; + e->track = track_index; + + /* Return user data for caller to fill in. */ + return e->data; +} + +/* External version of inline. */ +void *elog_event_data (elog_main_t * em, + elog_event_type_t * type, + elog_track_t * track, u64 cpu_time); + +/** @brief Allocate an event to be filled in by the caller, non-inline + + Not normally called directly; this function underlies the + ELOG_DATA and ELOG_TRACK_DATA macros + + @param em elog_main_t * + @param type elog_event_type_t * type + @param track elog_track_t * track + @param cpu_time u64 current cpu tick value + @returns event to be filled in +*/ +always_inline void * +elog_event_data_not_inline (elog_main_t * em, + elog_event_type_t * type, + elog_track_t * track, u64 cpu_time) +{ + /* Return the user dummy memory to scribble data into. */ + if (PREDICT_FALSE (!elog_is_enabled (em))) + return em->dummy_event.data; + return elog_event_data (em, type, track, cpu_time); +} + +/** @brief Log a single-datum event + @param em elog_main_t * + @param type elog_event_type_t * type + @param data u32 single datum to capture +*/ +always_inline void +elog (elog_main_t * em, elog_event_type_t * type, u32 data) +{ + u32 *d = elog_event_data_not_inline (em, + type, + &em->default_track, + clib_cpu_time_now ()); + d[0] = data; +} + +/** @brief Log a single-datum event, inline version + @param em elog_main_t * + @param type elog_event_type_t * type + @param data u32 single datum to capture +*/ +always_inline void +elog_inline (elog_main_t * em, elog_event_type_t * type, u32 data) +{ + u32 *d = elog_event_data_inline (em, + type, + &em->default_track, + clib_cpu_time_now ()); + d[0] = data; +} + +/** @brief Log a single-datum event to a specific track, non-inline version + @param em elog_main_t * + @param type elog_event_type_t * type + @param type elog_event_track_t * track + @param data u32 single datum to capture +*/ +always_inline void +elog_track (elog_main_t * em, elog_event_type_t * type, elog_track_t * track, + u32 data) +{ + u32 *d = elog_event_data_not_inline (em, + type, + track, + clib_cpu_time_now ()); + d[0] = data; +} + +/** @brief Log a single-datum event to a specific track + @param em elog_main_t * + @param type elog_event_type_t * type + @param type elog_event_track_t * track + @param data u32 single datum to capture +*/ +always_inline void +elog_track_inline (elog_main_t * em, elog_event_type_t * type, + elog_track_t * track, u32 data) +{ + u32 *d = elog_event_data_inline (em, + type, + track, + clib_cpu_time_now ()); + d[0] = data; +} + +always_inline void * +elog_data (elog_main_t * em, elog_event_type_t * type, elog_track_t * track) +{ + return elog_event_data_not_inline (em, type, track, clib_cpu_time_now ()); +} + +always_inline void * +elog_data_inline (elog_main_t * em, elog_event_type_t * type, + elog_track_t * track) +{ + return elog_event_data_inline (em, type, track, clib_cpu_time_now ()); +} + +/* Macro shorthands for generating/declaring events. */ +#define __ELOG_TYPE_VAR(f) f +#define __ELOG_TRACK_VAR(f) f + +#define ELOG_TYPE_DECLARE(f) static elog_event_type_t __ELOG_TYPE_VAR(f) + +#define ELOG_TYPE_INIT_FORMAT_AND_FUNCTION(fmt,func) \ + { .format = fmt, .function = func, } + +#define ELOG_TYPE_INIT(fmt) \ + ELOG_TYPE_INIT_FORMAT_AND_FUNCTION(fmt,(char *) __FUNCTION__) + +#define ELOG_TYPE_DECLARE_HELPER(f,fmt,func) \ + static elog_event_type_t __ELOG_TYPE_VAR(f) = \ + ELOG_TYPE_INIT_FORMAT_AND_FUNCTION (fmt, func) + +#define ELOG_TYPE_DECLARE_FORMAT_AND_FUNCTION(f,fmt) \ + ELOG_TYPE_DECLARE_HELPER (f, fmt, (char *) __FUNCTION__) + +#define ELOG_TYPE_DECLARE_FORMAT(f,fmt) \ + ELOG_TYPE_DECLARE_HELPER (f, fmt, 0) + +/* Shorthands with and without __FUNCTION__. + D for decimal; X for hex. F for __FUNCTION__. */ +#define ELOG_TYPE(f,fmt) ELOG_TYPE_DECLARE_FORMAT_AND_FUNCTION(f,fmt) +#define ELOG_TYPE_D(f) ELOG_TYPE_DECLARE_FORMAT (f, #f " %d") +#define ELOG_TYPE_X(f) ELOG_TYPE_DECLARE_FORMAT (f, #f " 0x%x") +#define ELOG_TYPE_DF(f) ELOG_TYPE_DECLARE_FORMAT_AND_FUNCTION (f, #f " %d") +#define ELOG_TYPE_XF(f) ELOG_TYPE_DECLARE_FORMAT_AND_FUNCTION (f, #f " 0x%x") +#define ELOG_TYPE_FD(f) ELOG_TYPE_DECLARE_FORMAT_AND_FUNCTION (f, #f " %d") +#define ELOG_TYPE_FX(f) ELOG_TYPE_DECLARE_FORMAT_AND_FUNCTION (f, #f " 0x%x") + +#define ELOG_TRACK_DECLARE(f) static elog_track_t __ELOG_TRACK_VAR(f) +#define ELOG_TRACK(f) ELOG_TRACK_DECLARE(f) = { .name = #f, } + +/* Log 32 bits of data. */ +#define ELOG(em,f,data) elog ((em), &__ELOG_TYPE_VAR(f), data) +#define ELOG_INLINE(em,f,data) elog_inline ((em), &__ELOG_TYPE_VAR(f), data) + +/* Return data pointer to fill in. */ +#define ELOG_TRACK_DATA(em,f,track) \ + elog_data ((em), &__ELOG_TYPE_VAR(f), &__ELOG_TRACK_VAR(track)) +#define ELOG_TRACK_DATA_INLINE(em,f,track) \ + elog_data_inline ((em), &__ELOG_TYPE_VAR(f), &__ELOG_TRACK_VAR(track)) + +/* Shorthand with default track. */ +#define ELOG_DATA(em,f) elog_data ((em), &__ELOG_TYPE_VAR (f), &(em)->default_track) +#define ELOG_DATA_INLINE(em,f) elog_data_inline ((em), &__ELOG_TYPE_VAR (f), &(em)->default_track) + +/** @brief add a string to the event-log string table + + Often combined with hashing and the T4 elog format specifier to + display complex strings in offline tooling + + @param em elog_main_t * + @param format char * + @param VARARGS + @return u32 index to add to event log +*/ +u32 elog_string (elog_main_t * em, char *format, ...); + +void elog_time_now (elog_time_stamp_t * et); + +/** @brief convert event ring events to events, and return them as a vector. + @param em elog_main_t * + @return event vector with timestamps in f64 seconds + @note sets em->events to resulting vector. +*/ +elog_event_t *elog_get_events (elog_main_t * em); + +/** @brief convert event ring events to events, and return them as a vector. + @param em elog_main_t * + @return event vector with timestamps in f64 seconds + @note no side effects +*/ +elog_event_t *elog_peek_events (elog_main_t * em); + +/* Merge two logs, add supplied track tags. */ +void elog_merge (elog_main_t * dst, u8 * dst_tag, + elog_main_t * src, u8 * src_tag, f64 align_tweak); + +/* 2 arguments elog_main_t and elog_event_t to format event or track name. */ +u8 *format_elog_event (u8 * s, va_list * va); +u8 *format_elog_track (u8 * s, va_list * va); + +void serialize_elog_main (serialize_main_t * m, va_list * va); +void unserialize_elog_main (serialize_main_t * m, va_list * va); + +void elog_init (elog_main_t * em, u32 n_events); +void elog_alloc (elog_main_t * em, u32 n_events); + +#ifdef CLIB_UNIX +always_inline clib_error_t * +elog_write_file (elog_main_t * em, char *unix_file, int flush_ring) +{ + serialize_main_t m; + clib_error_t *error; + + error = serialize_open_unix_file (&m, unix_file); + if (error) + return error; + error = serialize (&m, serialize_elog_main, em, flush_ring); + if (!error) + serialize_close (&m); + return error; +} + +always_inline clib_error_t * +elog_read_file (elog_main_t * em, char *unix_file) +{ + serialize_main_t m; + clib_error_t *error; + + error = unserialize_open_unix_file (&m, unix_file); + if (error) + return error; + error = unserialize (&m, unserialize_elog_main, em); + if (!error) + unserialize_close (&m); + return error; +} + +#endif /* CLIB_UNIX */ + +#endif /* included_clib_elog_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/error.c b/src/vppinfra/error.c new file mode 100644 index 00000000..2722fb7b --- /dev/null +++ b/src/vppinfra/error.c @@ -0,0 +1,292 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +/* Error reporting. */ +#include <stdarg.h> + +#include <vppinfra/clib.h> /* for HAVE_ERRNO */ + +#ifdef CLIB_LINUX_KERNEL +#include <linux/unistd.h> /* for write */ +#include <linux/kernel.h> /* for printk */ +#endif + +#ifdef CLIB_UNIX +#include <unistd.h> /* for write */ +#include <stdio.h> /* for printf */ +#define HAVE_ERRNO +#endif + +#ifdef CLIB_STANDALONE +#include <vppinfra/standalone_stdio.h> /* for printf */ +#endif + +#include <vppinfra/string.h> +#include <vppinfra/mem.h> +#include <vppinfra/vec.h> +#include <vppinfra/format.h> +#include <vppinfra/error.h> +#include <vppinfra/hash.h> +#include <vppinfra/os.h> /* for os_panic/os_exit/os_puts */ + +typedef struct +{ + clib_error_handler_func_t *func; + void *arg; +} clib_error_handler_t; + +static clib_error_handler_t *handlers = 0; + +void +clib_error_register_handler (clib_error_handler_func_t func, void *arg) +{ + clib_error_handler_t h = {.func = func,.arg = arg, }; + vec_add1 (handlers, h); +} + +static void +debugger (void) +{ + os_panic (); +} + +static void +error_exit (int code) +{ + os_exit (code); +} + +static u8 * +dispatch_message (u8 * msg) +{ + word i; + + if (!msg) + return msg; + + for (i = 0; i < vec_len (handlers); i++) + handlers[i].func (handlers[i].arg, msg, vec_len (msg)); + + /* If no message handler is specified provide a default one. */ + if (vec_len (handlers) == 0) + os_puts (msg, vec_len (msg), /* is_error */ 1); + + return msg; +} + +void +_clib_error (int how_to_die, + char *function_name, uword line_number, char *fmt, ...) +{ + u8 *msg = 0; + va_list va; + + if (function_name) + { + msg = format (msg, "%s:", function_name); + if (line_number > 0) + msg = format (msg, "%wd:", line_number); + msg = format (msg, " "); + } + + va_start (va, fmt); + msg = va_format (msg, fmt, &va); + va_end (va); + +#ifdef HAVE_ERRNO + if (how_to_die & CLIB_ERROR_ERRNO_VALID) + msg = format (msg, ": %s (errno %d)", strerror (errno), errno); +#endif + + if (vec_end (msg)[-1] != '\n') + vec_add1 (msg, '\n'); + + msg = dispatch_message (msg); + + vec_free (msg); + + if (how_to_die & CLIB_ERROR_ABORT) + debugger (); + if (how_to_die & CLIB_ERROR_FATAL) + error_exit (1); +} + +clib_error_t * +_clib_error_return (clib_error_t * errors, + any code, uword flags, char *where, char *fmt, ...) +{ + clib_error_t *e; + va_list va; + +#ifdef HAVE_ERRNO + /* Save errno since it may be re-set before we'll need it. */ + word errno_save = errno; +#endif + + va_start (va, fmt); + vec_add2 (errors, e, 1); + if (fmt) + e->what = va_format (0, fmt, &va); + +#ifdef HAVE_ERRNO + if (flags & CLIB_ERROR_ERRNO_VALID) + { + if (e->what) + e->what = format (e->what, ": "); + e->what = format (e->what, "%s", strerror (errno_save)); + } +#endif + + e->where = (u8 *) where; + e->code = code; + e->flags = flags; + va_end (va); + return errors; +} + +void * +clib_error_free_vector (clib_error_t * errors) +{ + clib_error_t *e; + vec_foreach (e, errors) vec_free (e->what); + vec_free (errors); + return 0; +} + +u8 * +format_clib_error (u8 * s, va_list * va) +{ + clib_error_t *errors = va_arg (*va, clib_error_t *); + clib_error_t *e; + + vec_foreach (e, errors) + { + if (!e->what) + continue; + + if (e->where) + { + u8 *where = 0; + + if (e > errors) + where = format (where, "from "); + where = format (where, "%s", e->where); + + s = format (s, "%v: ", where); + vec_free (where); + } + + s = format (s, "%v\n", e->what); + } + + return s; +} + +clib_error_t * +_clib_error_report (clib_error_t * errors) +{ + if (errors) + { + u8 *msg = format (0, "%U", format_clib_error, errors); + + msg = dispatch_message (msg); + vec_free (msg); + + if (errors->flags & CLIB_ERROR_ABORT) + debugger (); + if (errors->flags & CLIB_ERROR_FATAL) + error_exit (1); + + clib_error_free (errors); + } + return 0; +} + +#ifdef TEST + +static error_t * +foo1 (int x) +{ + return error_return (0, "x is odd %d", x); +} + +static error_t * +foo2 (int x) +{ + return error_return (0, "x is even %d", x); +} + +static error_t * +foo (int x) +{ + error_t *e; + if (x & 1) + e = foo1 (x); + else + e = foo2 (x); + if (e) + return error_return (e, 0); +} + +static void +error_handler (void *arg, char *msg, int msg_len) +{ + write (2, msg, msg_len); +} + +int +main (int argc, char *argv[]) +{ + error_t *e; + + register_error_handler (error_handler, 0); + + e = foo (getpid ()); + if (e) + error_report (e); + return 0; +} + +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/error.h b/src/vppinfra/error.h new file mode 100644 index 00000000..e0e2d472 --- /dev/null +++ b/src/vppinfra/error.h @@ -0,0 +1,199 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_error_h +#define included_error_h + +#include <vppinfra/clib.h> /* for CLIB_LINUX_KERNEL */ +#include <vppinfra/error_bootstrap.h> + +#ifdef CLIB_UNIX +#include <errno.h> +#endif + +#ifdef CLIB_LINUX_KERNEL +#include <linux/errno.h> +#endif + +#include <stdarg.h> +#include <vppinfra/vec.h> + +/* Callback functions for error reporting. */ +typedef void clib_error_handler_func_t (void *arg, u8 * msg, int msg_len); +void clib_error_register_handler (clib_error_handler_func_t func, void *arg); + +#define clib_warning(format,args...) \ + _clib_error (CLIB_ERROR_WARNING, clib_error_function, __LINE__, format, ## args) + +#define clib_error(format,args...) \ + _clib_error (CLIB_ERROR_FATAL, clib_error_function, __LINE__, format, ## args) + +#define clib_unix_error(format,args...) \ + _clib_error (CLIB_ERROR_FATAL | CLIB_ERROR_ERRNO_VALID, clib_error_function, __LINE__, format, ## args) + +#define clib_unix_warning(format,args...) \ + _clib_error (CLIB_ERROR_WARNING | CLIB_ERROR_ERRNO_VALID, clib_error_function, __LINE__, format, ## args) + +/* For programming errors and assert. */ +#define clib_panic(format,args...) \ + _clib_error (CLIB_ERROR_ABORT, (char *) clib_error_function, __LINE__, format, ## args) + +#include <vppinfra/clib_error.h> + +#define clib_error_get_code(err) ((err) ? (err)->code : 0) +#define clib_error_set_code(err, c) \ +do { \ + if (err) \ + (err)->code = (c); \ +} while (0) + +extern void *clib_error_free_vector (clib_error_t * errors); + +#define clib_error_free(e) e = clib_error_free_vector(e) + +extern clib_error_t *_clib_error_return (clib_error_t * errors, + any code, + uword flags, + char *where, char *fmt, ...); + +#define clib_error_return_code(e,code,flags,args...) \ + _clib_error_return((e),(code),(flags),(char *)clib_error_function,args) + +#define clib_error_create(args...) \ + clib_error_return_code(0,0,0,args) + +#define clib_error_return(e,args...) \ + clib_error_return_code(e,0,0,args) + +#define clib_error_return_unix(e,args...) \ + clib_error_return_code(e,errno,CLIB_ERROR_ERRNO_VALID,args) + +#define clib_error_return_fatal(e,args...) \ + clib_error_return_code(e,0,CLIB_ERROR_FATAL,args) + +#define clib_error_return_unix_fatal(e,args...) \ + clib_error_return_code(e,errno,CLIB_ERROR_ERRNO_VALID|CLIB_ERROR_FATAL,args) + +extern clib_error_t *_clib_error_report (clib_error_t * errors); + +#define clib_error_report(e) do { (e) = _clib_error_report (e); } while (0) + +u8 *format_clib_error (u8 * s, va_list * va); + +always_inline word +unix_error_is_fatal (word error) +{ +#ifdef CLIB_UNIX + switch (error) + { + case EWOULDBLOCK: + case EINTR: + return 0; + } +#endif + return 1; +} + +#define IF_ERROR_IS_FATAL_RETURN_ELSE_FREE(e) \ +do { \ + if (e) \ + { \ + if (unix_error_is_fatal (clib_error_get_code (e))) \ + return (e); \ + else \ + clib_error_free (e); \ + } \ +} while (0) + +#define ERROR_RETURN_IF(x) \ +do { \ + clib_error_t * _error_return_if = (x); \ + if (_error_return_if) \ + return clib_error_return (_error_return_if, 0); \ +} while (0) + +#define ERROR_ASSERT(truth) \ +({ \ + clib_error_t * _error_assert = 0; \ + if (CLIB_DEBUG > 0 && ! (truth)) \ + { \ + _error_assert = clib_error_return_fatal \ + (0, "%s:%d (%s) assertion `%s' fails", \ + __FILE__, \ + (uword) __LINE__, \ + clib_error_function, \ + # truth); \ + } \ + _error_assert; \ +}) + +/* Assert to remain even if CLIB_DEBUG is set to 0. */ +#define CLIB_ERROR_ASSERT(truth) \ +({ \ + clib_error_t * _error_assert = 0; \ + if (! (truth)) \ + { \ + _error_assert = \ + clib_error_return_fatal \ + (0, "%s:%d (%s) assertion `%s' fails", \ + __FILE__, \ + (uword) __LINE__, \ + clib_error_function, \ + # truth); \ + } \ + _error_assert; \ +}) + +/* + * If we're running under Coverity, don't die on + * failed static assertions. + */ +#ifdef __COVERITY__ +#ifndef _Static_assert +#define _Static_assert(x,y) +#endif +#endif + +#endif /* included_error_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/error_bootstrap.h b/src/vppinfra/error_bootstrap.h new file mode 100644 index 00000000..3416c2f9 --- /dev/null +++ b/src/vppinfra/error_bootstrap.h @@ -0,0 +1,106 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_error_bootstrap_h +#define included_error_bootstrap_h + +/* Bootstrap include so that #include <vppinfra/mem.h> can include e.g. + <vppinfra/mheap.h> which depends on <vppinfra/vec.h>. */ + +#include <vppinfra/clib.h> /* for uword */ + +enum +{ + CLIB_ERROR_FATAL = 1 << 0, + CLIB_ERROR_ABORT = 1 << 1, + CLIB_ERROR_WARNING = 1 << 2, + CLIB_ERROR_ERRNO_VALID = 1 << 16, + CLIB_ERROR_NO_RATE_LIMIT = 1 << 17, +}; + +/* Current function name. Need (char *) cast to silence gcc4 pointer signedness warning. */ +#define clib_error_function ((char *) __FUNCTION__) + +#ifndef CLIB_ASSERT_ENABLE +#define CLIB_ASSERT_ENABLE (CLIB_DEBUG > 0) +#endif + +/* Low level error reporting function. + Code specifies whether to call exit, abort or nothing at + all (for non-fatal warnings). */ +extern void _clib_error (int code, + char *function_name, + uword line_number, char *format, ...); + +#define ASSERT(truth) \ +do { \ + if (CLIB_ASSERT_ENABLE && ! (truth)) \ + { \ + _clib_error (CLIB_ERROR_ABORT, 0, 0, \ + "%s:%d (%s) assertion `%s' fails", \ + __FILE__, \ + (uword) __LINE__, \ + clib_error_function, \ + # truth); \ + } \ +} while (0) + +#if defined(__clang__) +#define STATIC_ASSERT(truth,...) +#else +#define STATIC_ASSERT(truth,...) _Static_assert(truth, __VA_ARGS__) +#endif + +#define STATIC_ASSERT_SIZEOF(d, s) \ + STATIC_ASSERT (sizeof (d) == s, "Size of " #d " must be " # s " bytes") + +/* Assert without allocating memory. */ +#define ASSERT_AND_PANIC(truth) \ +do { \ + if (CLIB_ASSERT_ENABLE && ! (truth)) \ + os_panic (); \ +} while (0) + +#endif /* included_error_bootstrap_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/fheap.c b/src/vppinfra/fheap.c new file mode 100644 index 00000000..13692456 --- /dev/null +++ b/src/vppinfra/fheap.c @@ -0,0 +1,473 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vppinfra/fheap.h> + +/* Fibonacci heaps. */ +always_inline fheap_node_t * +fheap_get_node (fheap_t * f, u32 i) +{ + return i != ~0 ? vec_elt_at_index (f->nodes, i) : 0; +} + +always_inline fheap_node_t * +fheap_get_root (fheap_t * f) +{ + return fheap_get_node (f, f->min_root); +} + +static void +fheap_validate (fheap_t * f) +{ + fheap_node_t *n, *m; + uword ni, si; + + if (!CLIB_DEBUG || !f->enable_validate) + return; + + vec_foreach_index (ni, f->nodes) + { + n = vec_elt_at_index (f->nodes, ni); + + if (!n->is_valid) + continue; + + /* Min root must have minimal key. */ + m = vec_elt_at_index (f->nodes, f->min_root); + ASSERT (n->key >= m->key); + + /* Min root must have no parent. */ + if (ni == f->min_root) + ASSERT (n->parent == ~0); + + /* Check sibling linkages. */ + if (n->next_sibling == ~0) + ASSERT (n->prev_sibling == ~0); + else if (n->prev_sibling == ~0) + ASSERT (n->next_sibling == ~0); + else + { + fheap_node_t *prev, *next; + u32 si = n->next_sibling, si_start = si; + do + { + m = vec_elt_at_index (f->nodes, si); + prev = vec_elt_at_index (f->nodes, m->prev_sibling); + next = vec_elt_at_index (f->nodes, m->next_sibling); + ASSERT (prev->next_sibling == si); + ASSERT (next->prev_sibling == si); + si = m->next_sibling; + } + while (si != si_start); + } + + /* Loop through all siblings. */ + { + u32 n_siblings = 0; + + foreach_fheap_node_sibling (f, si, n->next_sibling, ( + { + m = + vec_elt_at_index + (f->nodes, si); + /* All siblings must have same parent. */ + ASSERT (m->parent + == + n-> + parent); + n_siblings += 1;} + )); + + /* Either parent is non-empty or there are siblings present. */ + if (n->parent == ~0 && ni != f->min_root) + ASSERT (n_siblings > 0); + } + + /* Loop through all children. */ + { + u32 found_first_child = n->first_child == ~0; + u32 n_children = 0; + + foreach_fheap_node_sibling (f, si, n->first_child, ( + { + m = + vec_elt_at_index + (f->nodes, si); + /* Children must have larger keys than their parent. */ + ASSERT (m->key >= + n->key); + if + (!found_first_child) + found_first_child = + si == + n->first_child; + n_children += 1;} + )); + + /* Check that first child is present on list. */ + ASSERT (found_first_child); + + /* Make sure rank is correct. */ + ASSERT (n->rank == n_children); + } + } + + /* Increment serial number for each successful validate. + Failure can be used as condition for gdb breakpoints. */ + f->validate_serial++; +} + +always_inline void +fheap_node_add_sibling (fheap_t * f, u32 ni, u32 ni_to_add) +{ + fheap_node_t *n = vec_elt_at_index (f->nodes, ni); + fheap_node_t *n_to_add = vec_elt_at_index (f->nodes, ni_to_add); + fheap_node_t *n_next = fheap_get_node (f, n->next_sibling); + fheap_node_t *parent; + + /* Empty list? */ + if (n->next_sibling == ~0) + { + ASSERT (n->prev_sibling == ~0); + n->next_sibling = n->prev_sibling = ni_to_add; + n_to_add->next_sibling = n_to_add->prev_sibling = ni; + } + else + { + /* Add node after existing node. */ + n_to_add->prev_sibling = ni; + n_to_add->next_sibling = n->next_sibling; + + n->next_sibling = ni_to_add; + n_next->prev_sibling = ni_to_add; + } + + n_to_add->parent = n->parent; + parent = fheap_get_node (f, n->parent); + if (parent) + parent->rank += 1; +} + +void +fheap_add (fheap_t * f, u32 ni, u32 key) +{ + fheap_node_t *r, *n; + u32 ri; + + n = vec_elt_at_index (f->nodes, ni); + + memset (n, 0, sizeof (n[0])); + n->parent = n->first_child = n->next_sibling = n->prev_sibling = ~0; + n->key = key; + + r = fheap_get_root (f); + ri = f->min_root; + if (!r) + { + /* No root? Add node as new root. */ + f->min_root = ni; + } + else + { + /* Add node as sibling of current root. */ + fheap_node_add_sibling (f, ri, ni); + + /* New node may become new root. */ + if (r->key > n->key) + f->min_root = ni; + } + + fheap_validate (f); +} + +always_inline u32 +fheap_node_remove_internal (fheap_t * f, u32 ni, u32 invalidate) +{ + fheap_node_t *n = vec_elt_at_index (f->nodes, ni); + u32 prev_ni = n->prev_sibling; + u32 next_ni = n->next_sibling; + u32 list_has_single_element = prev_ni == ni; + fheap_node_t *prev = fheap_get_node (f, prev_ni); + fheap_node_t *next = fheap_get_node (f, next_ni); + fheap_node_t *p = fheap_get_node (f, n->parent); + + if (p) + { + ASSERT (p->rank > 0); + p->rank -= 1; + p->first_child = list_has_single_element ? ~0 : next_ni; + } + + if (prev) + { + ASSERT (prev->next_sibling == ni); + prev->next_sibling = next_ni; + } + if (next) + { + ASSERT (next->prev_sibling == ni); + next->prev_sibling = prev_ni; + } + + n->prev_sibling = n->next_sibling = ni; + n->parent = ~0; + n->is_valid = invalidate == 0; + + return list_has_single_element ? ~0 : next_ni; +} + +always_inline u32 +fheap_node_remove (fheap_t * f, u32 ni) +{ + return fheap_node_remove_internal (f, ni, /* invalidate */ 0); +} + +always_inline u32 +fheap_node_remove_and_invalidate (fheap_t * f, u32 ni) +{ + return fheap_node_remove_internal (f, ni, /* invalidate */ 1); +} + +static void +fheap_link_root (fheap_t * f, u32 ni) +{ + fheap_node_t *n = vec_elt_at_index (f->nodes, ni); + fheap_node_t *r, *lo, *hi; + u32 ri, lo_i, hi_i, k; + + while (1) + { + k = n->rank; + vec_validate_init_empty (f->root_list_by_rank, k, ~0); + ri = f->root_list_by_rank[k]; + r = fheap_get_node (f, ri); + if (!r) + { + f->root_list_by_rank[k] = ni; + return; + } + + f->root_list_by_rank[k] = ~0; + + /* Sort n/r into lo/hi by their keys. */ + lo = r, lo_i = ri; + hi = n, hi_i = ni; + if (hi->key < lo->key) + { + u32 ti; + fheap_node_t *tn; + ti = lo_i, tn = lo; + lo = hi, lo_i = hi_i; + hi = tn, hi_i = ti; + } + + /* Remove larger key. */ + fheap_node_remove (f, hi_i); + + /* Add larger key as child of smaller one. */ + if (lo->first_child == ~0) + { + hi->parent = lo_i; + lo->first_child = hi_i; + lo->rank = 1; + } + else + fheap_node_add_sibling (f, lo->first_child, hi_i); + + /* Following Fredman & Trajan: "When making a root node X a child of another node in a linking step, + we unmark X". */ + hi->is_marked = 0; + + ni = lo_i; + n = lo; + } +} + +u32 +fheap_del_min (fheap_t * f, u32 * min_key) +{ + fheap_node_t *r = fheap_get_root (f); + u32 to_delete_min_ri = f->min_root; + u32 ri, ni; + + /* Empty heap? */ + if (!r) + return ~0; + + /* Root's children become siblings. Call this step a; see below. */ + if (r->first_child != ~0) + { + u32 ci, cni, rni; + fheap_node_t *c, *cn, *rn; + + /* Splice child & root circular lists together. */ + ci = r->first_child; + c = vec_elt_at_index (f->nodes, ci); + + cni = c->next_sibling; + rni = r->next_sibling; + cn = vec_elt_at_index (f->nodes, cni); + rn = vec_elt_at_index (f->nodes, rni); + + r->next_sibling = cni; + c->next_sibling = rni; + cn->prev_sibling = to_delete_min_ri; + rn->prev_sibling = ci; + } + + /* Remove min root. */ + ri = fheap_node_remove_and_invalidate (f, to_delete_min_ri); + + /* Find new min root from among siblings including the ones we've just added. */ + f->min_root = ~0; + if (ri != ~0) + { + u32 ri_last, ri_next, i, min_ds; + + r = fheap_get_node (f, ri); + ri_last = r->prev_sibling; + while (1) + { + /* Step a above can put children (with r->parent != ~0) on root list. */ + r->parent = ~0; + + ri_next = r->next_sibling; + fheap_link_root (f, ri); + if (ri == ri_last) + break; + ri = ri_next; + r = fheap_get_node (f, ri); + } + + min_ds = ~0; + vec_foreach_index (i, f->root_list_by_rank) + { + ni = f->root_list_by_rank[i]; + if (ni == ~0) + continue; + f->root_list_by_rank[i] = ~0; + r = fheap_get_node (f, ni); + if (r->key < min_ds) + { + f->min_root = ni; + min_ds = r->key; + ASSERT (r->parent == ~0); + } + } + } + + /* Return deleted min root. */ + r = vec_elt_at_index (f->nodes, to_delete_min_ri); + if (min_key) + *min_key = r->key; + + fheap_validate (f); + + return to_delete_min_ri; +} + +static void +fheap_mark_parent (fheap_t * f, u32 pi) +{ + fheap_node_t *p = vec_elt_at_index (f->nodes, pi); + + /* Parent is a root: do nothing. */ + if (p->parent == ~0) + return; + + /* If not marked, mark it. */ + if (!p->is_marked) + { + p->is_marked = 1; + return; + } + + /* Its a previously marked, non-root parent. + Cut edge to its parent and add to root list. */ + fheap_node_remove (f, pi); + fheap_node_add_sibling (f, f->min_root, pi); + + /* Unmark it since its now a root node. */ + p->is_marked = 0; + + /* "Cascading cuts": check parent. */ + if (p->parent != ~0) + fheap_mark_parent (f, p->parent); +} + +/* Set key to new smaller value. */ +void +fheap_decrease_key (fheap_t * f, u32 ni, u32 new_key) +{ + fheap_node_t *n = vec_elt_at_index (f->nodes, ni); + fheap_node_t *r = fheap_get_root (f); + + n->key = new_key; + + if (n->parent != ~0) + { + fheap_mark_parent (f, n->parent); + + /* Remove node and add to root list. */ + fheap_node_remove (f, ni); + fheap_node_add_sibling (f, f->min_root, ni); + } + + if (n->key < r->key) + f->min_root = ni; + + fheap_validate (f); +} + +void +fheap_del (fheap_t * f, u32 ni) +{ + fheap_node_t *n; + + n = vec_elt_at_index (f->nodes, ni); + + if (n->parent == ~0) + { + ASSERT (ni == f->min_root); + fheap_del_min (f, 0); + } + else + { + u32 ci; + + fheap_mark_parent (f, n->parent); + + /* Add children to root list. */ + foreach_fheap_node_sibling (f, ci, n->first_child, ( + { + fheap_node_remove + (f, ci); + fheap_node_add_sibling + (f, f->min_root, + ci);} + )); + + fheap_node_remove_and_invalidate (f, ni); + } + + fheap_validate (f); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/fheap.h b/src/vppinfra/fheap.h new file mode 100644 index 00000000..6d4965f1 --- /dev/null +++ b/src/vppinfra/fheap.h @@ -0,0 +1,140 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef included_clib_fheap_h +#define included_clib_fheap_h + +/* Fibonacci Heaps Fredman, M. L.; Tarjan (1987). + "Fibonacci heaps and their uses in improved network optimization algorithms" */ + +#include <vppinfra/vec.h> + +typedef struct +{ + /* Node index of parent. */ + u32 parent; + + /* Node index of first child. */ + u32 first_child; + + /* Next and previous nodes in doubly linked list of siblings. */ + u32 next_sibling, prev_sibling; + + /* Key (distance) for this node. Parent always has key + <= than keys of children. */ + u32 key; + + /* Number of children (as opposed to descendents). */ + u32 rank; + + u32 is_marked; + + /* Set to one when node is inserted; zero when deleted. */ + u32 is_valid; +} fheap_node_t; + +#define foreach_fheap_node_sibling(f,ni,first_ni,body) \ +do { \ + u32 __fheap_foreach_first_ni = (first_ni); \ + u32 __fheap_foreach_ni = __fheap_foreach_first_ni; \ + u32 __fheap_foreach_next_ni; \ + fheap_node_t * __fheap_foreach_n; \ + if (__fheap_foreach_ni != ~0) \ + while (1) \ + { \ + __fheap_foreach_n = fheap_get_node ((f), __fheap_foreach_ni); \ + __fheap_foreach_next_ni = __fheap_foreach_n -> next_sibling; \ + (ni) = __fheap_foreach_ni; \ + \ + body; \ + \ + /* End of circular list? */ \ + if (__fheap_foreach_next_ni == __fheap_foreach_first_ni) \ + break; \ + \ + __fheap_foreach_ni = __fheap_foreach_next_ni; \ + \ + } \ +} while (0) + +typedef struct +{ + u32 min_root; + + /* Vector of nodes. */ + fheap_node_t *nodes; + + u32 *root_list_by_rank; + + u32 enable_validate; + + u32 validate_serial; +} fheap_t; + +/* Initialize empty heap. */ +always_inline void +fheap_init (fheap_t * f, u32 n_nodes) +{ + fheap_node_t *save_nodes = f->nodes; + u32 *save_root_list = f->root_list_by_rank; + + memset (f, 0, sizeof (f[0])); + + f->nodes = save_nodes; + f->root_list_by_rank = save_root_list; + + vec_validate (f->nodes, n_nodes - 1); + vec_reset_length (f->root_list_by_rank); + + f->min_root = ~0; +} + +always_inline void +fheap_free (fheap_t * f) +{ + vec_free (f->nodes); + vec_free (f->root_list_by_rank); +} + +always_inline u32 +fheap_find_min (fheap_t * f) +{ + return f->min_root; +} + +always_inline u32 +fheap_is_empty (fheap_t * f) +{ + return f->min_root == ~0; +} + +/* Add/delete nodes. */ +void fheap_add (fheap_t * f, u32 ni, u32 key); +void fheap_del (fheap_t * f, u32 ni); + +/* Delete and return minimum. */ +u32 fheap_del_min (fheap_t * f, u32 * min_key); + +/* Change key value. */ +void fheap_decrease_key (fheap_t * f, u32 ni, u32 new_key); + +#endif /* included_clib_fheap_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/fifo.c b/src/vppinfra/fifo.c new file mode 100644 index 00000000..5b4c76d1 --- /dev/null +++ b/src/vppinfra/fifo.c @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/cache.h> +#include <vppinfra/fifo.h> +#include <vppinfra/error.h> +#include <vppinfra/string.h> + +/* + General first in/first out queues. + FIFOs can have arbitrary size and type. + Let T be any type (i.e. char, int, struct foo, etc.). + + A null fifo is initialized: + + T * f = 0; + + For example, typedef struct { int a, b; } T; + + Elements can be added in 3 ways. + + #1 1 element is added: + T x; + x.a = 10; x.b = 20; + fifo_add1 (f, x); + + #2 n elements are added + T buf[10]; + initialize buf[0] .. buf[9]; + fifo_add (f, buf, 10); + + #3 1 element is added, pointer is returned + T * x; + fifo_add2 (f, x); + x->a = 10; + x->b = 20; + + Elements are removed 1 at a time: + T x; + fifo_sub1 (f, x); + + fifo_free (f) frees fifo. +*/ + +void * +_clib_fifo_resize (void *v_old, uword n_new_elts, uword elt_bytes) +{ + void *v_new, *end, *head; + uword n_old_elts, header_bytes; + uword n_copy_bytes, n_zero_bytes; + clib_fifo_header_t *f_new, *f_old; + + n_old_elts = clib_fifo_elts (v_old); + n_new_elts += n_old_elts; + if (n_new_elts < 32) + n_new_elts = 32; + else + n_new_elts = max_pow2 (n_new_elts); + + header_bytes = vec_header_bytes (sizeof (clib_fifo_header_t)); + + v_new = clib_mem_alloc_no_fail (n_new_elts * elt_bytes + header_bytes); + v_new += header_bytes; + + f_new = clib_fifo_header (v_new); + f_new->head_index = 0; + f_new->tail_index = n_old_elts; + _vec_len (v_new) = n_new_elts; + + /* Copy old -> new. */ + n_copy_bytes = n_old_elts * elt_bytes; + if (n_copy_bytes > 0) + { + f_old = clib_fifo_header (v_old); + end = v_old + _vec_len (v_old) * elt_bytes; + head = v_old + f_old->head_index * elt_bytes; + + if (head + n_copy_bytes >= end) + { + uword n = end - head; + clib_memcpy (v_new, head, n); + clib_memcpy (v_new + n, v_old, n_copy_bytes - n); + } + else + clib_memcpy (v_new, head, n_copy_bytes); + } + + /* Zero empty space. */ + n_zero_bytes = (n_new_elts - n_old_elts) * elt_bytes; + memset (v_new + n_copy_bytes, 0, n_zero_bytes); + + clib_fifo_free (v_old); + + return v_new; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/fifo.h b/src/vppinfra/fifo.h new file mode 100644 index 00000000..b0b35e25 --- /dev/null +++ b/src/vppinfra/fifo.h @@ -0,0 +1,304 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_fifo_h +#define included_fifo_h + +#include <vppinfra/cache.h> +#include <vppinfra/error.h> /* for ASSERT */ +#include <vppinfra/vec.h> + +typedef struct +{ + /* First index of valid data in fifo. */ + u32 head_index; + + /* One beyond last index in fifo. */ + u32 tail_index; +} clib_fifo_header_t; + +always_inline clib_fifo_header_t * +clib_fifo_header (void *f) +{ + return vec_header (f, sizeof (clib_fifo_header_t)); +} + +/* Aliases. */ +#define clib_fifo_len(v) vec_len(v) +#define _clib_fifo_len(v) _vec_len(v) +#define clib_fifo_end(v) vec_end(v) + +always_inline uword +clib_fifo_elts (void *v) +{ + word l, r; + clib_fifo_header_t *f = clib_fifo_header (v); + + if (!v) + return 0; + + l = _clib_fifo_len (v); + r = (word) f->tail_index - (word) f->head_index; + r = r < 0 ? r + l : r; + ASSERT (r >= 0 && r <= l); + return r; +} + +always_inline uword +clib_fifo_free_elts (void *v) +{ + return clib_fifo_len (v) - clib_fifo_elts (v); +} + +always_inline void +clib_fifo_reset (void *v) +{ + clib_fifo_header_t *f = clib_fifo_header (v); + if (v) + { + f->head_index = f->tail_index = 0; + _vec_len (v) = 0; + } +} + +/* External resize function. */ +void *_clib_fifo_resize (void *v, uword n_elts, uword elt_bytes); + +#define clib_fifo_resize(f,n_elts) \ + f = _clib_fifo_resize ((f), (n_elts), sizeof ((f)[0])) + +always_inline void * +_clib_fifo_validate (void *v, uword n_elts, uword elt_bytes) +{ + if (clib_fifo_free_elts (v) < n_elts) + v = _clib_fifo_resize (v, n_elts, elt_bytes); + return v; +} + +#define clib_fifo_validate(f,n_elts) \ + f = _clib_fifo_validate ((f), (n_elts), sizeof (f[0])) + +/* Advance tail pointer by N_ELTS which can be either positive or negative. */ +always_inline void * +_clib_fifo_advance_tail (void *v, word n_elts, uword elt_bytes, + uword * tail_return) +{ + word i, l, n_free; + clib_fifo_header_t *f; + + n_free = clib_fifo_free_elts (v); + if (n_free < n_elts) + { + v = _clib_fifo_resize (v, n_elts, elt_bytes); + n_free = clib_fifo_free_elts (v); + } + + ASSERT (n_free >= n_elts); + n_free -= n_elts; + + f = clib_fifo_header (v); + l = _clib_fifo_len (v); + i = f->tail_index; + + if (n_free == 0) + { + /* Mark fifo full. */ + f->tail_index = f->head_index + l; + } + else + { + word n = f->tail_index + n_elts; + if (n >= l) + n -= l; + else if (n < 0) + n += l; + ASSERT (n >= 0 && n < l); + f->tail_index = n; + } + + ASSERT (clib_fifo_free_elts (v) == n_free); + + if (tail_return) + *tail_return = n_elts > 0 ? i : f->tail_index; + + return v; +} + +#define clib_fifo_advance_tail(f,n_elts) \ +({ \ + uword _i; \ + (f) = _clib_fifo_advance_tail ((f), (n_elts), sizeof ((f)[0]), &_i); \ + (f) + _i; \ +}) + +always_inline uword +clib_fifo_advance_head (void *v, uword n_elts) +{ + clib_fifo_header_t *f; + uword l, i, n; + + ASSERT (clib_fifo_elts (v) >= n_elts); + f = clib_fifo_header (v); + l = _clib_fifo_len (v); + + /* If fifo was full, restore tail pointer. */ + if (f->tail_index == f->head_index + l) + f->tail_index = f->head_index; + + n = i = f->head_index; + n += n_elts; + n = n >= l ? n - l : n; + ASSERT (n < l); + f->head_index = n; + + return i; +} + +/* Add given element to fifo. */ +#define clib_fifo_add1(f,e) \ +do { \ + uword _i; \ + (f) = _clib_fifo_advance_tail ((f), 1, sizeof ((f)[0]), &_i); \ + (f)[_i] = (e); \ +} while (0) + +/* Add element to fifo; return pointer to new element. */ +#define clib_fifo_add2(f,p) \ +do { \ + uword _i; \ + (f) = _clib_fifo_advance_tail ((f), 1, sizeof ((f)[0]), &_i); \ + (p) = (f) + _i; \ +} while (0) + +/* Add several elements to fifo. */ +#define clib_fifo_add(f,e,n) \ +do { \ + uword _i, _l; word _n0, _n1; \ + \ + _n0 = (n); \ + (f) = _clib_fifo_advance_tail ((f), _n0, sizeof ((f)[0]), &_i); \ + _l = clib_fifo_len (f); \ + _n1 = _i + _n0 - _l; \ + _n1 = _n1 < 0 ? 0 : _n1; \ + _n0 -= _n1; \ + clib_memcpy ((f) + _i, (e), _n0 * sizeof ((f)[0])); \ + if (_n1) \ + clib_memcpy ((f) + 0, (e) + _n0, _n1 * sizeof ((f)[0])); \ +} while (0) + +/* Subtract element from fifo. */ +#define clib_fifo_sub1(f,e) \ +do { \ + uword _i; \ + ASSERT (clib_fifo_elts (f) >= 1); \ + _i = clib_fifo_advance_head ((f), 1); \ + (e) = (f)[_i]; \ +} while (0) + +#define clib_fifo_sub2(f,p) \ +do { \ + uword _i; \ + ASSERT (clib_fifo_elts (f) >= 1); \ + _i = clib_fifo_advance_head ((f), 1); \ + (p) = (f) + _i; \ +} while (0) + +always_inline uword +clib_fifo_head_index (void *v) +{ + clib_fifo_header_t *f = clib_fifo_header (v); + return v ? f->head_index : 0; +} + +always_inline uword +clib_fifo_tail_index (void *v) +{ + clib_fifo_header_t *f = clib_fifo_header (v); + return v ? f->tail_index : 0; +} + +#define clib_fifo_head(v) ((v) + clib_fifo_head_index (v)) +#define clib_fifo_tail(v) ((v) + clib_fifo_tail_index (v)) + +#define clib_fifo_free(f) vec_free_h((f),sizeof(clib_fifo_header_t)) + +always_inline uword +clib_fifo_elt_index (void *v, uword i) +{ + clib_fifo_header_t *f = clib_fifo_header (v); + uword result = 0; + + ASSERT (i < clib_fifo_elts (v)); + + if (v) + { + result = f->head_index + i; + if (result >= _vec_len (v)) + result -= _vec_len (v); + } + + return result; +} + +#define clib_fifo_elt_at_index(v,i) ((v) + clib_fifo_elt_index (v, (i))) + +#define clib_fifo_foreach(v,f,body) \ +do { \ + uword _i, _l, _n; \ + \ + _i = clib_fifo_head_index (f); \ + _l = clib_fifo_len (f); \ + _n = clib_fifo_elts (f); \ + while (_n > 0) \ + { \ + (v) = (f) + _i; \ + do { body; } while (0); \ + _n--; \ + _i++; \ + _i = _i >= _l ? 0 : _i; \ + } \ +} while (0) + +#endif /* included_fifo_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/file.h b/src/vppinfra/file.h new file mode 100644 index 00000000..69facea9 --- /dev/null +++ b/src/vppinfra/file.h @@ -0,0 +1,134 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + * file.h: unix file handling + * + * Copyright (c) 2008 Eliot Dresselhaus + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef included_clib_file_h +#define included_clib_file_h + +#include <vppinfra/socket.h> +#include <termios.h> + + +struct clib_file; +typedef clib_error_t *(clib_file_function_t) (struct clib_file * f); + +typedef struct clib_file +{ + /* Unix file descriptor from open/socket. */ + u32 file_descriptor; + + u32 flags; +#define UNIX_FILE_DATA_AVAILABLE_TO_WRITE (1 << 0) +#define UNIX_FILE_EVENT_EDGE_TRIGGERED (1 << 1) + + /* Data available for function's use. */ + uword private_data; + + /* Functions to be called when read/write data becomes ready. */ + clib_file_function_t *read_function, *write_function, *error_function; +} clib_file_t; + +typedef enum +{ + UNIX_FILE_UPDATE_ADD, + UNIX_FILE_UPDATE_MODIFY, + UNIX_FILE_UPDATE_DELETE, +} unix_file_update_type_t; + +typedef struct +{ + /* Pool of files to poll for input/output. */ + clib_file_t *file_pool; + + void (*file_update) (clib_file_t * file, + unix_file_update_type_t update_type); + +} clib_file_main_t; + +always_inline uword +clib_file_add (clib_file_main_t * um, clib_file_t * template) +{ + clib_file_t *f; + pool_get (um->file_pool, f); + f[0] = template[0]; + um->file_update (f, UNIX_FILE_UPDATE_ADD); + return f - um->file_pool; +} + +always_inline void +clib_file_del (clib_file_main_t * um, clib_file_t * f) +{ + um->file_update (f, UNIX_FILE_UPDATE_DELETE); + close (f->file_descriptor); + f->file_descriptor = ~0; + pool_put (um->file_pool, f); +} + +always_inline void +clib_file_del_by_index (clib_file_main_t * um, uword index) +{ + clib_file_t *uf; + uf = pool_elt_at_index (um->file_pool, index); + clib_file_del (um, uf); +} + +always_inline uword +clib_file_set_data_available_to_write (clib_file_main_t * um, + u32 clib_file_index, + uword is_available) +{ + clib_file_t *uf = pool_elt_at_index (um->file_pool, clib_file_index); + uword was_available = (uf->flags & UNIX_FILE_DATA_AVAILABLE_TO_WRITE); + if ((was_available != 0) != (is_available != 0)) + { + uf->flags ^= UNIX_FILE_DATA_AVAILABLE_TO_WRITE; + um->file_update (uf, UNIX_FILE_UPDATE_MODIFY); + } + return was_available != 0; +} + + +#endif /* included_clib_file_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/format.c b/src/vppinfra/format.c new file mode 100644 index 00000000..70292c04 --- /dev/null +++ b/src/vppinfra/format.c @@ -0,0 +1,819 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/*------------------------------------------------------------------ + * format.c -- see notice below + * + * October 2003, Eliot Dresselhaus + * + * Modifications to this file Copyright (c) 2003 by cisco Systems, Inc. + * All rights reserved. + *------------------------------------------------------------------ + */ + +/* + Copyright (c) 2001, 2002, 2003, 2006 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <stdarg.h> /* va_start, etc */ + +#ifdef CLIB_UNIX +#include <unistd.h> +#include <stdio.h> +#endif + +#ifdef CLIB_STANDALONE +#include <vppinfra/standalone_stdio.h> +#endif + +#include <vppinfra/mem.h> +#include <vppinfra/format.h> +#include <vppinfra/vec.h> +#include <vppinfra/error.h> +#include <vppinfra/string.h> +#include <vppinfra/os.h> /* os_puts */ +#include <vppinfra/math.h> + +typedef struct +{ + /* Output number in this base. */ + u8 base; + + /* Number of show of 64 bit number. */ + u8 n_bits; + + /* Signed or unsigned. */ + u8 is_signed; + + /* Output digits uppercase (not lowercase) %X versus %x. */ + u8 uppercase_digits; +} format_integer_options_t; + +static u8 *format_integer (u8 * s, u64 number, + format_integer_options_t * options); +static u8 *format_float (u8 * s, f64 x, uword n_digits_to_print, + uword output_style); + +typedef struct +{ + /* String justification: + => right, - => left, = => center. */ + uword justify; + + /* Width of string (before and after decimal point for numbers). + 0 => natural width. */ + uword width[2]; + + /* Long => 'l', long long 'L', int 0. */ + uword how_long; + + /* Pad character. Defaults to space. */ + uword pad_char; +} format_info_t; + +static u8 * +justify (u8 * s, format_info_t * fi, uword s_len_orig) +{ + uword i0, l0, l1; + + i0 = s_len_orig; + l0 = i0 + fi->width[0]; + l1 = vec_len (s); + + /* If width is zero user returned width. */ + if (l0 == i0) + l0 = l1; + + if (l1 > l0) + _vec_len (s) = l0; + else if (l0 > l1) + { + uword n = l0 - l1; + uword n_left = 0, n_right = 0; + + switch (fi->justify) + { + case '-': + n_right = n; + break; + + case '+': + n_left = n; + break; + + case '=': + n_right = n_left = n / 2; + if (n % 2) + n_left++; + break; + } + if (n_left > 0) + { + vec_insert (s, n_left, i0); + memset (s + i0, fi->pad_char, n_left); + l1 = vec_len (s); + } + if (n_right > 0) + { + vec_resize (s, n_right); + memset (s + l1, fi->pad_char, n_right); + } + } + return s; +} + +static const u8 * +do_percent (u8 ** _s, const u8 * fmt, va_list * va) +{ + u8 *s = *_s; + uword c; + + const u8 *f = fmt; + + format_info_t fi = { + .justify = '+', + .width = {0}, + .pad_char = ' ', + .how_long = 0, + }; + + uword i; + + ASSERT (f[0] == '%'); + + switch (c = *++f) + { + case '%': + /* %% => % */ + vec_add1 (s, c); + f++; + goto done; + + case '-': + case '+': + case '=': + fi.justify = c; + c = *++f; + break; + } + + /* Parse width0 . width1. */ + { + uword is_first_digit = 1; + + fi.width[0] = fi.width[1] = 0; + for (i = 0; i < 2; i++) + { + if (c == '0' && i == 0 && is_first_digit) + fi.pad_char = '0'; + is_first_digit = 0; + if (c == '*') + { + fi.width[i] = va_arg (*va, int); + c = *++f; + } + else + { + while (c >= '0' && c <= '9') + { + fi.width[i] = 10 * fi.width[i] + (c - '0'); + c = *++f; + } + } + if (c != '.') + break; + c = *++f; + } + } + + /* Parse %l* and %L* */ + switch (c) + { + case 'w': + /* word format. */ + fi.how_long = 'w'; + c = *++f; + break; + + case 'L': + case 'l': + fi.how_long = c; + c = *++f; + if (c == 'l' && *f == 'l') + { + fi.how_long = 'L'; + c = *++f; + } + break; + } + + /* Finally we are ready for format letter. */ + if (c != 0) + { + uword s_initial_len = vec_len (s); + format_integer_options_t o = { + .is_signed = 0, + .base = 10, + .n_bits = BITS (uword), + .uppercase_digits = 0, + }; + + f++; + + switch (c) + { + default: + { + /* Try to give a helpful error message. */ + vec_free (s); + s = format (s, "**** CLIB unknown format `%%%c' ****", c); + goto done; + } + + case 'c': + vec_add1 (s, va_arg (*va, int)); + break; + + case 'p': + vec_add1 (s, '0'); + vec_add1 (s, 'x'); + + o.is_signed = 0; + o.n_bits = BITS (uword *); + o.base = 16; + o.uppercase_digits = 0; + + s = format_integer (s, pointer_to_uword (va_arg (*va, void *)), &o); + break; + + case 'x': + case 'X': + case 'u': + case 'd': + { + u64 number; + + o.base = 10; + if (c == 'x' || c == 'X') + o.base = 16; + o.is_signed = c == 'd'; + o.uppercase_digits = c == 'X'; + + switch (fi.how_long) + { + case 'L': + number = va_arg (*va, unsigned long long); + o.n_bits = BITS (unsigned long long); + break; + + case 'l': + number = va_arg (*va, long); + o.n_bits = BITS (long); + break; + + case 'w': + number = va_arg (*va, word); + o.n_bits = BITS (uword); + break; + + default: + number = va_arg (*va, int); + o.n_bits = BITS (int); + break; + } + + s = format_integer (s, number, &o); + } + break; + + case 's': + case 'S': + { + char *cstring = va_arg (*va, char *); + uword len; + + if (!cstring) + { + cstring = "(nil)"; + len = 5; + } + else if (fi.width[1] != 0) + len = clib_min (strlen (cstring), fi.width[1]); + else + len = strlen (cstring); + + /* %S => format string as C identifier (replace _ with space). */ + if (c == 'S') + { + for (i = 0; i < len; i++) + vec_add1 (s, cstring[i] == '_' ? ' ' : cstring[i]); + } + else + vec_add (s, cstring, len); + } + break; + + case 'v': + { + u8 *v = va_arg (*va, u8 *); + uword len; + + if (fi.width[1] != 0) + len = clib_min (vec_len (v), fi.width[1]); + else + len = vec_len (v); + + vec_add (s, v, len); + } + break; + + case 'f': + case 'g': + case 'e': + /* Floating point. */ + ASSERT (fi.how_long == 0 || fi.how_long == 'l'); + s = format_float (s, va_arg (*va, double), fi.width[1], c); + break; + + case 'U': + /* User defined function. */ + { + typedef u8 *(user_func_t) (u8 * s, va_list * args); + user_func_t *u = va_arg (*va, user_func_t *); + + s = (*u) (s, va); + } + break; + } + + s = justify (s, &fi, s_initial_len); + } + +done: + *_s = s; + return f; +} + +u8 * +va_format (u8 * s, const char *fmt, va_list * va) +{ + const u8 *f = (u8 *) fmt, *g; + u8 c; + + g = f; + while (1) + { + c = *f; + + if (!c) + break; + + if (c == '%') + { + if (f > g) + vec_add (s, g, f - g); + f = g = do_percent (&s, f, va); + } + else + { + f++; + } + } + + if (f > g) + vec_add (s, g, f - g); + + return s; +} + +u8 * +format (u8 * s, const char *fmt, ...) +{ + va_list va; + va_start (va, fmt); + s = va_format (s, fmt, &va); + va_end (va); + return s; +} + +word +va_fformat (FILE * f, char *fmt, va_list * va) +{ + word ret; + u8 *s; + + s = va_format (0, fmt, va); + +#ifdef CLIB_UNIX + if (f) + { + ret = fwrite (s, vec_len (s), 1, f); + } + else +#endif /* CLIB_UNIX */ + { + ret = 0; + os_puts (s, vec_len (s), /* is_error */ 0); + } + + vec_free (s); + return ret; +} + +word +fformat (FILE * f, char *fmt, ...) +{ + va_list va; + word ret; + + va_start (va, fmt); + ret = va_fformat (f, fmt, &va); + va_end (va); + + return (ret); +} + +#ifdef CLIB_UNIX +word +fdformat (int fd, char *fmt, ...) +{ + word ret; + u8 *s; + va_list va; + + va_start (va, fmt); + s = va_format (0, fmt, &va); + va_end (va); + + ret = write (fd, s, vec_len (s)); + vec_free (s); + return ret; +} +#endif + +/* Format integral type. */ +static u8 * +format_integer (u8 * s, u64 number, format_integer_options_t * options) +{ + u64 q; + u32 r; + u8 digit_buffer[128]; + u8 *d = digit_buffer + sizeof (digit_buffer); + word c, base; + + if (options->is_signed && (i64) number < 0) + { + number = -number; + vec_add1 (s, '-'); + } + + if (options->n_bits < BITS (number)) + number &= ((u64) 1 << options->n_bits) - 1; + + base = options->base; + + while (1) + { + q = number / base; + r = number % base; + + if (r < 10 + 26 + 26) + { + if (r < 10) + c = '0' + r; + else if (r < 10 + 26) + c = 'a' + (r - 10); + else + c = 'A' + (r - 10 - 26); + + if (options->uppercase_digits + && base <= 10 + 26 && c >= 'a' && c <= 'z') + c += 'A' - 'a'; + + *--d = c; + } + else /* will never happen, warning be gone */ + { + *--d = '?'; + } + + if (q == 0) + break; + + number = q; + } + + vec_add (s, d, digit_buffer + sizeof (digit_buffer) - d); + return s; +} + +/* Floating point formatting. */ +/* Deconstruct IEEE 64 bit number into sign exponent and fraction. */ +#define f64_down(f,sign,expon,fraction) \ +do { \ + union { u64 u; f64 f; } _f64_down_tmp; \ + _f64_down_tmp.f = (f); \ + (sign) = (_f64_down_tmp.u >> 63); \ + (expon) = ((_f64_down_tmp.u >> 52) & 0x7ff) - 1023; \ + (fraction) = ((_f64_down_tmp.u << 12) >> 12) | ((u64) 1 << 52); \ +} while (0) + +/* Construct IEEE 64 bit number. */ +static f64 +f64_up (uword sign, word expon, u64 fraction) +{ + union + { + u64 u; + f64 f; + } tmp; + + tmp.u = (u64) ((sign) != 0) << 63; + + expon += 1023; + if (expon > 1023) + expon = 1023; + if (expon < 0) + expon = 0; + tmp.u |= (u64) expon << 52; + + tmp.u |= fraction & (((u64) 1 << 52) - 1); + + return tmp.f; +} + +/* Returns approximate precision of number given its exponent. */ +static f64 +f64_precision (int base2_expon) +{ + static int n_bits = 0; + + if (!n_bits) + { + /* Compute number of significant bits in floating point representation. */ + f64 one = 0; + f64 small = 1; + + while (one != 1) + { + small *= .5; + n_bits++; + one = 1 + small; + } + } + + return f64_up (0, base2_expon - n_bits, 0); +} + +/* Return x 10^n */ +static f64 +times_power_of_ten (f64 x, int n) +{ + if (n >= 0) + { + static f64 t[8] = { 1e+0, 1e+1, 1e+2, 1e+3, 1e+4, 1e+5, 1e+6, 1e+7, }; + while (n >= 8) + { + x *= 1e+8; + n -= 8; + } + return x * t[n]; + } + else + { + static f64 t[8] = { 1e-0, 1e-1, 1e-2, 1e-3, 1e-4, 1e-5, 1e-6, 1e-7, }; + while (n <= -8) + { + x *= 1e-8; + n += 8; + } + return x * t[-n]; + } + +} + +/* Write x = y * 10^expon with 1 < y < 10. */ +static f64 +normalize (f64 x, word * expon_return, f64 * prec_return) +{ + word expon2, expon10; + CLIB_UNUSED (u64 fraction); + CLIB_UNUSED (word sign); + f64 prec; + + f64_down (x, sign, expon2, fraction); + + expon10 = + .5 + + expon2 * .301029995663981195213738894724493 /* Log (2) / Log (10) */ ; + + prec = f64_precision (expon2); + x = times_power_of_ten (x, -expon10); + prec = times_power_of_ten (prec, -expon10); + + while (x < 1) + { + x *= 10; + prec *= 10; + expon10--; + } + + while (x > 10) + { + x *= .1; + prec *= .1; + expon10++; + } + + if (x + prec >= 10) + { + x = 1; + expon10++; + } + + *expon_return = expon10; + *prec_return = prec; + + return x; +} + +static u8 * +add_some_zeros (u8 * s, uword n_zeros) +{ + while (n_zeros > 0) + { + vec_add1 (s, '0'); + n_zeros--; + } + return s; +} + +/* Format a floating point number with the given number of fractional + digits (e.g. 1.2345 with 2 fraction digits yields "1.23") and output style. */ +static u8 * +format_float (u8 * s, f64 x, uword n_fraction_digits, uword output_style) +{ + f64 prec; + word sign, expon, n_fraction_done, added_decimal_point; + /* Position of decimal point relative to where we are. */ + word decimal_point; + + /* Default number of digits to print when its not specified. */ + if (n_fraction_digits == ~0) + n_fraction_digits = 7; + n_fraction_done = 0; + decimal_point = 0; + added_decimal_point = 0; + sign = expon = 0; + + /* Special case: zero. */ + if (x == 0) + { + do_zero: + vec_add1 (s, '0'); + goto done; + } + + if (x < 0) + { + x = -x; + sign = 1; + } + + /* Check for not-a-number. */ + if (isnan (x)) + return format (s, "%cNaN", sign ? '-' : '+'); + + /* Check for infinity. */ + if (isinf (x)) + return format (s, "%cinfinity", sign ? '-' : '+'); + + x = normalize (x, &expon, &prec); + + /* Not enough digits to print anything: so just print 0 */ + if ((word) - expon > (word) n_fraction_digits + && (output_style == 'f' || (output_style == 'g'))) + goto do_zero; + + if (sign) + vec_add1 (s, '-'); + + if (output_style == 'f' + || (output_style == 'g' && expon > -10 && expon < 10)) + { + if (expon < 0) + { + /* Add decimal point and leading zeros. */ + vec_add1 (s, '.'); + n_fraction_done = clib_min (-(expon + 1), n_fraction_digits); + s = add_some_zeros (s, n_fraction_done); + decimal_point = -n_fraction_done; + added_decimal_point = 1; + } + else + decimal_point = expon + 1; + } + else + { + /* Exponential output style. */ + decimal_point = 1; + output_style = 'e'; + } + + while (1) + { + uword digit; + + /* Number is smaller than precision: call it zero. */ + if (x < prec) + break; + + digit = x; + x -= digit; + if (x + prec >= 1) + { + digit++; + x -= 1; + } + + /* Round last printed digit. */ + if (decimal_point <= 0 + && n_fraction_done + 1 == n_fraction_digits && digit < 9) + digit += x >= .5; + + vec_add1 (s, '0' + digit); + + /* Move rightwards towards/away from decimal point. */ + decimal_point--; + + n_fraction_done += decimal_point < 0; + if (decimal_point <= 0 && n_fraction_done >= n_fraction_digits) + break; + + if (decimal_point == 0 && x != 0) + { + vec_add1 (s, '.'); + added_decimal_point = 1; + } + + x *= 10; + prec *= 10; + } + +done: + if (decimal_point > 0) + { + s = add_some_zeros (s, decimal_point); + decimal_point = 0; + } + + if (n_fraction_done < n_fraction_digits) + { + if (!added_decimal_point) + vec_add1 (s, '.'); + s = add_some_zeros (s, n_fraction_digits - n_fraction_done); + } + + if (output_style == 'e') + s = format (s, "e%wd", expon); + + return s; +} + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/format.h b/src/vppinfra/format.h new file mode 100644 index 00000000..5b7023a3 --- /dev/null +++ b/src/vppinfra/format.h @@ -0,0 +1,334 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_format_h +#define included_format_h + +#include <stdarg.h> + +#include <vppinfra/clib.h> /* for CLIB_UNIX, etc. */ +#include <vppinfra/vec.h> +#include <vppinfra/error.h> /* for ASSERT */ +#include <vppinfra/string.h> + +typedef u8 *(format_function_t) (u8 * s, va_list * args); + +u8 *va_format (u8 * s, const char *format, va_list * args); +u8 *format (u8 * s, const char *format, ...); + +#ifdef CLIB_UNIX + +#include <stdio.h> + +#else /* ! CLIB_UNIX */ + +/* We're not Unix and have not stdio.h */ +#define FILE void +#define stdin ((FILE *) 0) +#define stdout ((FILE *) 1) +#define stderr ((FILE *) 2) + +#endif + +word va_fformat (FILE * f, char *fmt, va_list * va); +word fformat (FILE * f, char *fmt, ...); +word fdformat (int fd, char *fmt, ...); + +always_inline uword +format_get_indent (u8 * s) +{ + uword indent = 0; + u8 *nl; + + if (!s) + return indent; + + nl = vec_end (s) - 1; + while (nl >= s) + { + if (*nl-- == '\n') + break; + indent++; + } + return indent; +} + +#define _(f) u8 * f (u8 * s, va_list * va) + +/* Standard user-defined formats. */ +_(format_vec32); +_(format_vec_uword); +_(format_ascii_bytes); +_(format_hex_bytes); +_(format_white_space); +_(format_f64); +_(format_time_interval); + +#ifdef CLIB_UNIX +/* Unix specific formats. */ +_(format_address_family); +_(format_unix_arphrd); +_(format_unix_interface_flags); +_(format_network_address); +_(format_network_protocol); +_(format_network_port); +_(format_sockaddr); +_(format_ip4_tos_byte); +_(format_ip4_packet); +_(format_icmp4_type_and_code); +_(format_ethernet_packet); +_(format_hostname); +_(format_timeval); +_(format_time_float); +_(format_signal); +_(format_ucontext_pc); +#endif + +#undef _ + +/* Unformat. */ + +typedef struct _unformat_input_t +{ + /* Input buffer (vector). */ + u8 *buffer; + + /* Current index in input buffer. */ + uword index; + + /* Vector of buffer marks. Used to delineate pieces of the buffer + for error reporting and for parse recovery. */ + uword *buffer_marks; + + /* User's function to fill the buffer when its empty + (and argument). */ + uword (*fill_buffer) (struct _unformat_input_t * i); + + /* Return values for fill buffer function which indicate whether not + input has been exhausted. */ +#define UNFORMAT_END_OF_INPUT (~0) +#define UNFORMAT_MORE_INPUT 0 + + /* User controlled argument to fill buffer function. */ + void *fill_buffer_arg; +} unformat_input_t; + +always_inline void +unformat_init (unformat_input_t * i, + uword (*fill_buffer) (unformat_input_t *), + void *fill_buffer_arg) +{ + memset (i, 0, sizeof (i[0])); + i->fill_buffer = fill_buffer; + i->fill_buffer_arg = fill_buffer_arg; +} + +always_inline void +unformat_free (unformat_input_t * i) +{ + vec_free (i->buffer); + vec_free (i->buffer_marks); + memset (i, 0, sizeof (i[0])); +} + +always_inline uword +unformat_check_input (unformat_input_t * i) +{ + /* Low level fill input function. */ + extern uword _unformat_fill_input (unformat_input_t * i); + + if (i->index >= vec_len (i->buffer) && i->index != UNFORMAT_END_OF_INPUT) + _unformat_fill_input (i); + + return i->index; +} + +/* Return true if input is exhausted */ +always_inline uword +unformat_is_eof (unformat_input_t * input) +{ + return unformat_check_input (input) == UNFORMAT_END_OF_INPUT; +} + +/* Return next element in input vector, + possibly calling fill input to get more. */ +always_inline uword +unformat_get_input (unformat_input_t * input) +{ + uword i = unformat_check_input (input); + if (i < vec_len (input->buffer)) + { + input->index = i + 1; + i = input->buffer[i]; + } + return i; +} + +/* Back up input pointer by one. */ +always_inline void +unformat_put_input (unformat_input_t * input) +{ + input->index -= 1; +} + +/* Peek current input character without advancing. */ +always_inline uword +unformat_peek_input (unformat_input_t * input) +{ + uword c = unformat_get_input (input); + if (c != UNFORMAT_END_OF_INPUT) + unformat_put_input (input); + return c; +} + +/* Skip current input line. */ +always_inline void +unformat_skip_line (unformat_input_t * i) +{ + uword c; + + while ((c = unformat_get_input (i)) != UNFORMAT_END_OF_INPUT && c != '\n') + ; +} + +uword unformat_skip_white_space (unformat_input_t * input); + +/* Unformat function. */ +typedef uword (unformat_function_t) (unformat_input_t * input, + va_list * args); + +/* External functions. */ + +/* General unformatting function with programmable input stream. */ +uword unformat (unformat_input_t * i, const char *fmt, ...); + +/* Call user defined parse function. + unformat_user (i, f, ...) is equivalent to unformat (i, "%U", f, ...) */ +uword unformat_user (unformat_input_t * input, unformat_function_t * func, + ...); + +/* Alternate version which allows for extensions. */ +uword va_unformat (unformat_input_t * i, const char *fmt, va_list * args); + +/* Setup for unformat of Unix style command line. */ +void unformat_init_command_line (unformat_input_t * input, char *argv[]); + +/* Setup for unformat of given string. */ +void unformat_init_string (unformat_input_t * input, + char *string, int string_len); + +always_inline void +unformat_init_cstring (unformat_input_t * input, char *string) +{ + unformat_init_string (input, string, strlen (string)); +} + +/* Setup for unformat of given vector string; vector will be freed by unformat_string. */ +void unformat_init_vector (unformat_input_t * input, u8 * vector_string); + +/* Format function for unformat input usable when an unformat error + has occurred. */ +u8 *format_unformat_error (u8 * s, va_list * va); + +#define unformat_parse_error(input) \ + clib_error_return (0, "parse error `%U'", format_unformat_error, input) + +/* Print all input: not just error context. */ +u8 *format_unformat_input (u8 * s, va_list * va); + +/* Unformat (parse) function which reads a %s string and converts it + to and unformat_input_t. */ +unformat_function_t unformat_input; + +/* Parse a line ending with \n and return it. */ +unformat_function_t unformat_line; + +/* Parse a line ending with \n and return it as an unformat_input_t. */ +unformat_function_t unformat_line_input; + +/* Parse a token containing given set of characters. */ +unformat_function_t unformat_token; + +/* Parses a hexstring into a vector of bytes. */ +unformat_function_t unformat_hex_string; + +/* Returns non-zero match if input is exhausted. + Useful to ensure that the entire input matches with no trailing junk. */ +unformat_function_t unformat_eof; + +/* Parse memory size e.g. 100, 100k, 100m, 100g. */ +unformat_function_t unformat_memory_size; + +/* Unparse memory size e.g. 100, 100k, 100m, 100g. */ +u8 *format_memory_size (u8 * s, va_list * va); + +/* Format c identifier: e.g. a_name -> "a name". */ +u8 *format_c_identifier (u8 * s, va_list * va); + +/* Format hexdump with both hex and printable chars - compatible with text2pcap */ +u8 *format_hexdump (u8 * s, va_list * va); + +/* Unix specific formats. */ +#ifdef CLIB_UNIX +/* Setup input from Unix file. */ +void unformat_init_unix_file (unformat_input_t * input, int file_descriptor); + +/* Take input from Unix environment variable; returns + 1 if variable exists zero otherwise. */ +uword unformat_init_unix_env (unformat_input_t * input, char *var); + +/* Unformat unix group id (gid) specified as integer or string */ +unformat_function_t unformat_unix_gid; +#endif /* CLIB_UNIX */ + +/* Test code. */ +int test_format_main (unformat_input_t * input); +int test_unformat_main (unformat_input_t * input); + +/* This is not the right place for this, but putting it in vec.h +created circular dependency problems. */ +int test_vec_main (unformat_input_t * input); + +#endif /* included_format_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/graph.c b/src/vppinfra/graph.c new file mode 100644 index 00000000..98a29046 --- /dev/null +++ b/src/vppinfra/graph.c @@ -0,0 +1,182 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vppinfra/graph.h> + +/* Set link distance, creating link if not found. */ +u32 +graph_set_link (graph_t * g, u32 src, u32 dst, u32 distance) +{ + graph_node_t *src_node, *dst_node; + graph_link_t *l; + u32 old_distance; + + /* The following validate will not work if src or dst are on the + pool free list. */ + if (src < vec_len (g->nodes)) + ASSERT (!pool_is_free_index (g->nodes, src)); + if (dst < vec_len (g->nodes)) + ASSERT (!pool_is_free_index (g->nodes, dst)); + + /* Make new (empty) nodes to make src and dst valid. */ + pool_validate_index (g->nodes, clib_max (src, dst)); + + src_node = pool_elt_at_index (g->nodes, src); + dst_node = pool_elt_at_index (g->nodes, dst); + + l = graph_dir_get_link_to_node (&src_node->next, dst); + if (l) + { + old_distance = l->distance; + l->distance = distance; + + l = graph_dir_get_link_to_node (&dst_node->prev, src); + l->distance = distance; + } + else + { + uword li_next, li_prev; + + old_distance = ~0; + + li_next = graph_dir_add_link (&src_node->next, dst, distance); + li_prev = graph_dir_add_link (&dst_node->prev, src, distance); + + l = vec_elt_at_index (src_node->next.links, li_next); + l->link_to_self_index = li_prev; + + l = vec_elt_at_index (dst_node->prev.links, li_prev); + l->link_to_self_index = li_next; + } + + return old_distance; +} + +void +graph_del_link (graph_t * g, u32 src, u32 dst) +{ + graph_node_t *src_node, *dst_node; + + src_node = pool_elt_at_index (g->nodes, src); + dst_node = pool_elt_at_index (g->nodes, dst); + + graph_dir_del_link (&src_node->next, dst); + graph_dir_del_link (&dst_node->next, src); +} + +/* Delete source node and all links from other nodes from/to source. */ +uword +graph_del_node (graph_t * g, u32 src) +{ + graph_node_t *src_node, *n; + uword index; + graph_link_t *l; + + src_node = pool_elt_at_index (g->nodes, src); + + vec_foreach (l, src_node->next.links) + { + n = pool_elt_at_index (g->nodes, l->node_index); + graph_dir_del_link (&n->prev, src); + } + + vec_foreach (l, src_node->prev.links) + { + n = pool_elt_at_index (g->nodes, l->node_index); + graph_dir_del_link (&n->next, src); + } + + graph_dir_free (&src_node->next); + graph_dir_free (&src_node->prev); + + index = src_node - g->nodes; + pool_put (g->nodes, src_node); + memset (src_node, ~0, sizeof (src_node[0])); + + return index; +} + +uword +unformat_graph (unformat_input_t * input, va_list * args) +{ + graph_t *g = va_arg (*args, graph_t *); + typedef struct + { + u32 src, dst, distance; + } T; + T *links = 0, *l; + uword result; + + while (1) + { + vec_add2 (links, l, 1); + if (!unformat (input, "%d%d%d", &l->src, &l->dst, &l->distance)) + break; + } + _vec_len (links) -= 1; + result = vec_len (links) > 0; + vec_foreach (l, links) + { + graph_set_link (g, l->src, l->dst, l->distance); + graph_set_link (g, l->dst, l->src, l->distance); + } + + vec_free (links); + return result; +} + +u8 * +format_graph_node (u8 * s, va_list * args) +{ + graph_t *g = va_arg (*args, graph_t *); + u32 node_index = va_arg (*args, u32); + + if (g->format_node) + s = format (s, "%U", g->format_node, g, node_index); + else + s = format (s, "%d", node_index); + + return s; +} + +u8 * +format_graph (u8 * s, va_list * args) +{ + graph_t *g = va_arg (*args, graph_t *); + graph_node_t *n; + graph_link_t *l; + uword indent = format_get_indent (s); + + s = format (s, "graph %d nodes", pool_elts (g->nodes)); + /* *INDENT-OFF* */ + pool_foreach (n, g->nodes, ({ + s = format (s, "\n%U", format_white_space, indent + 2); + s = format (s, "%U -> ", format_graph_node, g, n - g->nodes); + vec_foreach (l, n->next.links) + s = format (s, "%U (%d), ", + format_graph_node, g, l->node_index, + l->distance); + })); + /* *INDENT-ON* */ + + return s; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/graph.h b/src/vppinfra/graph.h new file mode 100644 index 00000000..1c26118f --- /dev/null +++ b/src/vppinfra/graph.h @@ -0,0 +1,127 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef included_clib_graph_h +#define included_clib_graph_h + +#include <vppinfra/format.h> +#include <vppinfra/hash.h> +#include <vppinfra/pool.h> + +/* Generic graphs. */ +typedef struct +{ + /* Next node along this link. */ + u32 node_index; + + /* Other direction link index to reach back to current node. */ + u32 link_to_self_index; + + /* Distance to next node. */ + u32 distance; +} graph_link_t; + +/* Direction on graph: either next or previous. */ +typedef struct +{ + /* Vector of links. */ + graph_link_t *links; + + /* Hash mapping node index to link which visits this node. */ + uword *link_index_by_node_index; +} graph_dir_t; + +always_inline void +graph_dir_free (graph_dir_t * d) +{ + vec_free (d->links); + hash_free (d->link_index_by_node_index); +} + +always_inline graph_link_t * +graph_dir_get_link_to_node (graph_dir_t * d, u32 node_index) +{ + uword *p = hash_get (d->link_index_by_node_index, node_index); + return p ? vec_elt_at_index (d->links, p[0]) : 0; +} + +always_inline uword +graph_dir_add_link (graph_dir_t * d, u32 node_index, u32 distance) +{ + graph_link_t *l; + ASSERT (!graph_dir_get_link_to_node (d, node_index)); + vec_add2 (d->links, l, 1); + l->node_index = node_index; + l->distance = distance; + hash_set (d->link_index_by_node_index, node_index, l - d->links); + return l - d->links; +} + +always_inline void +graph_dir_del_link (graph_dir_t * d, u32 node_index) +{ + graph_link_t *l = graph_dir_get_link_to_node (d, node_index); + uword li = l - d->links; + uword n_links = vec_len (d->links); + + ASSERT (l != 0); + hash_unset (d->link_index_by_node_index, node_index); + n_links -= 1; + if (li < n_links) + d->links[li] = d->links[n_links]; + _vec_len (d->links) = n_links; +} + +typedef struct +{ + /* Nodes we are connected to plus distances. */ + graph_dir_t next, prev; +} graph_node_t; + +typedef struct +{ + /* Pool of nodes. */ + graph_node_t *nodes; + + void *opaque; + + format_function_t *format_node; +} graph_t; + +/* Set link distance, creating link if not found. */ +u32 graph_set_link (graph_t * g, u32 src, u32 dst, u32 distance); + +always_inline void +graph_set_bidirectional_link (graph_t * g, u32 src, u32 dst, u32 distance) +{ + graph_set_link (g, src, dst, distance); + graph_set_link (g, dst, src, distance); +} + +void graph_del_link (graph_t * g, u32 src, u32 dst); +uword graph_del_node (graph_t * g, u32 src); + +unformat_function_t unformat_graph; +format_function_t format_graph; +format_function_t format_graph_node; + +#endif /* included_clib_graph_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/hash.c b/src/vppinfra/hash.c new file mode 100644 index 00000000..062ad882 --- /dev/null +++ b/src/vppinfra/hash.c @@ -0,0 +1,1095 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001-2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/hash.h> +#include <vppinfra/error.h> +#include <vppinfra/mem.h> +#include <vppinfra/byte_order.h> /* for clib_arch_is_big_endian */ + +always_inline void +zero_pair (hash_t * h, hash_pair_t * p) +{ + memset (p, 0, hash_pair_bytes (h)); +} + +always_inline void +init_pair (hash_t * h, hash_pair_t * p) +{ + memset (p->value, ~0, hash_value_bytes (h)); +} + +always_inline hash_pair_union_t * +get_pair (void *v, uword i) +{ + hash_t *h = hash_header (v); + hash_pair_t *p; + ASSERT (i < vec_len (v)); + p = v; + p += i << h->log2_pair_size; + return (hash_pair_union_t *) p; +} + +always_inline void +set_is_user (void *v, uword i, uword is_user) +{ + hash_t *h = hash_header (v); + uword i0 = i / BITS (h->is_user[0]); + uword i1 = (uword) 1 << (i % BITS (h->is_user[0])); + if (is_user) + h->is_user[i0] |= i1; + else + h->is_user[i0] &= ~i1; +} + +static u8 *hash_format_pair_default (u8 * s, va_list * args); + +#if uword_bits == 64 + +static inline u64 +zap64 (u64 x, word n) +{ +#define _(n) (((u64) 1 << (u64) (8*(n))) - (u64) 1) + static u64 masks_little_endian[] = { + 0, _(1), _(2), _(3), _(4), _(5), _(6), _(7), + }; + static u64 masks_big_endian[] = { + 0, ~_(7), ~_(6), ~_(5), ~_(4), ~_(3), ~_(2), ~_(1), + }; +#undef _ + if (clib_arch_is_big_endian) + return x & masks_big_endian[n]; + else + return x & masks_little_endian[n]; +} + +static inline u64 +hash_memory64 (void *p, word n_bytes, u64 state) +{ + u64 *q = p; + u64 a, b, c, n; + + a = b = 0x9e3779b97f4a7c13LL; + c = state; + n = n_bytes; + + while (n >= 3 * sizeof (u64)) + { + a += clib_mem_unaligned (q + 0, u64); + b += clib_mem_unaligned (q + 1, u64); + c += clib_mem_unaligned (q + 2, u64); + hash_mix64 (a, b, c); + n -= 3 * sizeof (u64); + q += 3; + } + + c += n_bytes; + switch (n / sizeof (u64)) + { + case 2: + a += clib_mem_unaligned (q + 0, u64); + b += clib_mem_unaligned (q + 1, u64); + if (n % sizeof (u64)) + c += zap64 (clib_mem_unaligned (q + 2, u64), n % sizeof (u64)) << 8; + break; + + case 1: + a += clib_mem_unaligned (q + 0, u64); + if (n % sizeof (u64)) + b += zap64 (clib_mem_unaligned (q + 1, u64), n % sizeof (u64)); + break; + + case 0: + if (n % sizeof (u64)) + a += zap64 (clib_mem_unaligned (q + 0, u64), n % sizeof (u64)); + break; + } + + hash_mix64 (a, b, c); + + return c; +} + +#else /* if uword_bits == 64 */ + +static inline u32 +zap32 (u32 x, word n) +{ +#define _(n) (((u32) 1 << (u32) (8*(n))) - (u32) 1) + static u32 masks_little_endian[] = { + 0, _(1), _(2), _(3), + }; + static u32 masks_big_endian[] = { + 0, ~_(3), ~_(2), ~_(1), + }; +#undef _ + if (clib_arch_is_big_endian) + return x & masks_big_endian[n]; + else + return x & masks_little_endian[n]; +} + +static inline u32 +hash_memory32 (void *p, word n_bytes, u32 state) +{ + u32 *q = p; + u32 a, b, c, n; + + a = b = 0x9e3779b9; + c = state; + n = n_bytes; + + while (n >= 3 * sizeof (u32)) + { + a += clib_mem_unaligned (q + 0, u32); + b += clib_mem_unaligned (q + 1, u32); + c += clib_mem_unaligned (q + 2, u32); + hash_mix32 (a, b, c); + n -= 3 * sizeof (u32); + q += 3; + } + + c += n_bytes; + switch (n / sizeof (u32)) + { + case 2: + a += clib_mem_unaligned (q + 0, u32); + b += clib_mem_unaligned (q + 1, u32); + if (n % sizeof (u32)) + c += zap32 (clib_mem_unaligned (q + 2, u32), n % sizeof (u32)) << 8; + break; + + case 1: + a += clib_mem_unaligned (q + 0, u32); + if (n % sizeof (u32)) + b += zap32 (clib_mem_unaligned (q + 1, u32), n % sizeof (u32)); + break; + + case 0: + if (n % sizeof (u32)) + a += zap32 (clib_mem_unaligned (q + 0, u32), n % sizeof (u32)); + break; + } + + hash_mix32 (a, b, c); + + return c; +} +#endif + +uword +hash_memory (void *p, word n_bytes, uword state) +{ + uword *q = p; + +#if uword_bits == 64 + return hash_memory64 (q, n_bytes, state); +#else + return hash_memory32 (q, n_bytes, state); +#endif +} + +#if uword_bits == 64 +always_inline uword +hash_uword (uword x) +{ + u64 a, b, c; + + a = b = 0x9e3779b97f4a7c13LL; + c = 0; + a += x; + hash_mix64 (a, b, c); + return c; +} +#else +always_inline uword +hash_uword (uword x) +{ + u32 a, b, c; + + a = b = 0x9e3779b9; + c = 0; + a += x; + hash_mix32 (a, b, c); + return c; +} +#endif + +/* Call sum function. Hash code will be sum function value + modulo the prime length of the hash table. */ +always_inline uword +key_sum (hash_t * h, uword key) +{ + uword sum; + switch (pointer_to_uword ((void *) h->key_sum)) + { + case KEY_FUNC_NONE: + sum = hash_uword (key); + break; + + case KEY_FUNC_POINTER_UWORD: + sum = hash_uword (*uword_to_pointer (key, uword *)); + break; + + case KEY_FUNC_POINTER_U32: + sum = hash_uword (*uword_to_pointer (key, u32 *)); + break; + + case KEY_FUNC_STRING: + sum = string_key_sum (h, key); + break; + + default: + sum = h->key_sum (h, key); + break; + } + + return sum; +} + +always_inline uword +key_equal1 (hash_t * h, uword key1, uword key2, uword e) +{ + switch (pointer_to_uword ((void *) h->key_equal)) + { + case KEY_FUNC_NONE: + break; + + case KEY_FUNC_POINTER_UWORD: + e = + *uword_to_pointer (key1, uword *) == *uword_to_pointer (key2, + uword *); + break; + + case KEY_FUNC_POINTER_U32: + e = *uword_to_pointer (key1, u32 *) == *uword_to_pointer (key2, u32 *); + break; + + case KEY_FUNC_STRING: + e = string_key_equal (h, key1, key2); + break; + + default: + e = h->key_equal (h, key1, key2); + break; + } + return e; +} + +/* Compares two keys: returns 1 if equal, 0 if not. */ +always_inline uword +key_equal (hash_t * h, uword key1, uword key2) +{ + uword e = key1 == key2; + if (CLIB_DEBUG > 0 && key1 == key2) + ASSERT (key_equal1 (h, key1, key2, e)); + if (!e) + e = key_equal1 (h, key1, key2, e); + return e; +} + +static hash_pair_union_t * +get_indirect (void *v, hash_pair_indirect_t * pi, uword key) +{ + hash_t *h = hash_header (v); + hash_pair_t *p0, *p1; + + p0 = p1 = pi->pairs; + if (h->log2_pair_size > 0) + p1 = hash_forward (h, p0, indirect_pair_get_len (pi)); + else + p1 += vec_len (p0); + + while (p0 < p1) + { + if (key_equal (h, p0->key, key)) + return (hash_pair_union_t *) p0; + p0 = hash_forward1 (h, p0); + } + + return (hash_pair_union_t *) 0; +} + +static hash_pair_union_t * +set_indirect_is_user (void *v, uword i, hash_pair_union_t * p, uword key) +{ + hash_t *h = hash_header (v); + hash_pair_t *q; + hash_pair_indirect_t *pi = &p->indirect; + uword log2_bytes = 0; + + if (h->log2_pair_size == 0) + q = vec_new (hash_pair_t, 2); + else + { + log2_bytes = 1 + hash_pair_log2_bytes (h); + q = clib_mem_alloc (1ULL << log2_bytes); + } + clib_memcpy (q, &p->direct, hash_pair_bytes (h)); + + pi->pairs = q; + if (h->log2_pair_size > 0) + indirect_pair_set (pi, log2_bytes, 2); + + set_is_user (v, i, 0); + + /* First element is used by existing pair, second will be used by caller. */ + q = hash_forward1 (h, q); + q->key = key; + init_pair (h, q); + return (hash_pair_union_t *) q; +} + +static hash_pair_union_t * +set_indirect (void *v, hash_pair_indirect_t * pi, uword key, + uword * found_key) +{ + hash_t *h = hash_header (v); + hash_pair_t *new_pair; + hash_pair_union_t *q; + + q = get_indirect (v, pi, key); + if (q) + { + *found_key = 1; + return q; + } + + if (h->log2_pair_size == 0) + vec_add2 (pi->pairs, new_pair, 1); + else + { + uword len, new_len, log2_bytes; + + len = indirect_pair_get_len (pi); + log2_bytes = indirect_pair_get_log2_bytes (pi); + + new_len = len + 1; + if (new_len * hash_pair_bytes (h) > (1ULL << log2_bytes)) + { + pi->pairs = clib_mem_realloc (pi->pairs, + 1ULL << (log2_bytes + 1), + 1ULL << log2_bytes); + log2_bytes++; + } + + indirect_pair_set (pi, log2_bytes, new_len); + new_pair = pi->pairs + (len << h->log2_pair_size); + } + new_pair->key = key; + init_pair (h, new_pair); + *found_key = 0; + return (hash_pair_union_t *) new_pair; +} + +static void +unset_indirect (void *v, uword i, hash_pair_t * q) +{ + hash_t *h = hash_header (v); + hash_pair_union_t *p = get_pair (v, i); + hash_pair_t *e; + hash_pair_indirect_t *pi = &p->indirect; + uword len, is_vec; + + is_vec = h->log2_pair_size == 0; + + ASSERT (!hash_is_user (v, i)); + len = is_vec ? vec_len (pi->pairs) : indirect_pair_get_len (pi); + e = hash_forward (h, pi->pairs, len - 1); + ASSERT (q >= pi->pairs && q <= e); + + /* We have two or fewer pairs and we are delete one pair. + Make indirect pointer direct and free indirect memory. */ + if (len <= 2) + { + hash_pair_t *r = pi->pairs; + + if (len == 2) + { + clib_memcpy (p, q == r ? hash_forward1 (h, r) : r, + hash_pair_bytes (h)); + set_is_user (v, i, 1); + } + else + zero_pair (h, &p->direct); + + if (is_vec) + vec_free (r); + else if (r) + clib_mem_free (r); + } + else + { + /* If deleting a pair we need to keep non-null pairs together. */ + if (q < e) + clib_memcpy (q, e, hash_pair_bytes (h)); + else + zero_pair (h, q); + if (is_vec) + _vec_len (pi->pairs) -= 1; + else + indirect_pair_set (pi, indirect_pair_get_log2_bytes (pi), len - 1); + } +} + +enum lookup_opcode +{ + GET = 1, + SET = 2, + UNSET = 3, +}; + +static hash_pair_t * +lookup (void *v, uword key, enum lookup_opcode op, + void *new_value, void *old_value) +{ + hash_t *h = hash_header (v); + hash_pair_union_t *p = 0; + uword found_key = 0; + uword i; + + if (!v) + return 0; + + i = key_sum (h, key) & (_vec_len (v) - 1); + p = get_pair (v, i); + + if (hash_is_user (v, i)) + { + found_key = key_equal (h, p->direct.key, key); + if (found_key) + { + if (op == UNSET) + { + set_is_user (v, i, 0); + if (old_value) + clib_memcpy (old_value, p->direct.value, + hash_value_bytes (h)); + zero_pair (h, &p->direct); + } + } + else + { + if (op == SET) + p = set_indirect_is_user (v, i, p, key); + else + p = 0; + } + } + else + { + hash_pair_indirect_t *pi = &p->indirect; + + if (op == SET) + { + if (!pi->pairs) + { + p->direct.key = key; + set_is_user (v, i, 1); + } + else + p = set_indirect (v, pi, key, &found_key); + } + else + { + p = get_indirect (v, pi, key); + found_key = p != 0; + if (found_key && op == UNSET) + { + if (old_value) + clib_memcpy (old_value, &p->direct.value, + hash_value_bytes (h)); + + unset_indirect (v, i, &p->direct); + + /* Nullify p (since it's just been deleted). + Otherwise we might be tempted to play with it. */ + p = 0; + } + } + } + + if (op == SET && p != 0) + { + /* Save away old value for caller. */ + if (old_value && found_key) + clib_memcpy (old_value, &p->direct.value, hash_value_bytes (h)); + clib_memcpy (&p->direct.value, new_value, hash_value_bytes (h)); + } + + if (op == SET) + h->elts += !found_key; + if (op == UNSET) + h->elts -= found_key; + + return &p->direct; +} + +/* Fetch value of key. */ +uword * +_hash_get (void *v, uword key) +{ + hash_t *h = hash_header (v); + hash_pair_t *p; + + /* Don't even search table if its empty. */ + if (!v || h->elts == 0) + return 0; + + p = lookup (v, key, GET, 0, 0); + if (!p) + return 0; + if (h->log2_pair_size == 0) + return &p->key; + else + return &p->value[0]; +} + +hash_pair_t * +_hash_get_pair (void *v, uword key) +{ + return lookup (v, key, GET, 0, 0); +} + +hash_pair_t * +hash_next (void *v, hash_next_t * hn) +{ + hash_t *h = hash_header (v); + hash_pair_t *p; + + while (1) + { + if (hn->i == 0 && hn->j == 0) + { + /* Save flags. */ + hn->f = h->flags; + + /* Prevent others from re-sizing hash table. */ + h->flags |= + (HASH_FLAG_NO_AUTO_GROW + | HASH_FLAG_NO_AUTO_SHRINK | HASH_FLAG_HASH_NEXT_IN_PROGRESS); + } + else if (hn->i >= hash_capacity (v)) + { + /* Restore flags. */ + h->flags = hn->f; + memset (hn, 0, sizeof (hn[0])); + return 0; + } + + p = hash_forward (h, v, hn->i); + if (hash_is_user (v, hn->i)) + { + hn->i++; + return p; + } + else + { + hash_pair_indirect_t *pi = (void *) p; + uword n; + + if (h->log2_pair_size > 0) + n = indirect_pair_get_len (pi); + else + n = vec_len (pi->pairs); + + if (hn->j >= n) + { + hn->i++; + hn->j = 0; + } + else + return hash_forward (h, pi->pairs, hn->j++); + } + } +} + +/* Remove key from table. */ +void * +_hash_unset (void *v, uword key, void *old_value) +{ + hash_t *h; + + if (!v) + return v; + + (void) lookup (v, key, UNSET, 0, old_value); + + h = hash_header (v); + if (!(h->flags & HASH_FLAG_NO_AUTO_SHRINK)) + { + /* Resize when 1/4 full. */ + if (h->elts > 32 && 4 * (h->elts + 1) < vec_len (v)) + v = hash_resize (v, vec_len (v) / 2); + } + + return v; +} + +void * +_hash_create (uword elts, hash_t * h_user) +{ + hash_t *h; + uword log2_pair_size; + void *v; + + /* Size of hash is power of 2 >= ELTS and larger than + number of bits in is_user bitmap elements. */ + elts = clib_max (elts, BITS (h->is_user[0])); + elts = 1ULL << max_log2 (elts); + + log2_pair_size = 1; + if (h_user) + log2_pair_size = h_user->log2_pair_size; + + v = _vec_resize (0, + /* vec len: */ elts, + /* data bytes: */ + (elts << log2_pair_size) * sizeof (hash_pair_t), + /* header bytes: */ + sizeof (h[0]) + + (elts / BITS (h->is_user[0])) * sizeof (h->is_user[0]), + /* alignment */ sizeof (hash_pair_t)); + h = hash_header (v); + + if (h_user) + h[0] = h_user[0]; + + h->log2_pair_size = log2_pair_size; + h->elts = 0; + + /* Default flags to never shrinking hash tables. + Shrinking tables can cause "jackpot" cases. */ + if (!h_user) + h->flags = HASH_FLAG_NO_AUTO_SHRINK; + + if (!h->format_pair) + { + h->format_pair = hash_format_pair_default; + h->format_pair_arg = 0; + } + + return v; +} + +void * +_hash_free (void *v) +{ + hash_t *h = hash_header (v); + hash_pair_union_t *p; + uword i; + + if (!v) + return v; + + /* We zero all freed memory in case user would be tempted to use it. */ + for (i = 0; i < hash_capacity (v); i++) + { + if (hash_is_user (v, i)) + continue; + p = get_pair (v, i); + if (h->log2_pair_size == 0) + vec_free (p->indirect.pairs); + else if (p->indirect.pairs) + clib_mem_free (p->indirect.pairs); + } + + vec_free_header (h); + + return 0; +} + +static void * +hash_resize_internal (void *old, uword new_size, uword free_old) +{ + void *new; + hash_pair_t *p; + + new = 0; + if (new_size > 0) + { + hash_t *h = old ? hash_header (old) : 0; + new = _hash_create (new_size, h); + /* *INDENT-OFF* */ + hash_foreach_pair (p, old, { + new = _hash_set3 (new, p->key, &p->value[0], 0); + }); + /* *INDENT-ON* */ + } + + if (free_old) + hash_free (old); + return new; +} + +void * +hash_resize (void *old, uword new_size) +{ + return hash_resize_internal (old, new_size, 1); +} + +void * +hash_dup (void *old) +{ + return hash_resize_internal (old, vec_len (old), 0); +} + +void * +_hash_set3 (void *v, uword key, void *value, void *old_value) +{ + hash_t *h; + + if (!v) + v = hash_create (0, sizeof (uword)); + + h = hash_header (v); + (void) lookup (v, key, SET, value, old_value); + + if (!(h->flags & HASH_FLAG_NO_AUTO_GROW)) + { + /* Resize when 3/4 full. */ + if (4 * (h->elts + 1) > 3 * vec_len (v)) + v = hash_resize (v, 2 * vec_len (v)); + } + + return v; +} + +uword +vec_key_sum (hash_t * h, uword key) +{ + void *v = uword_to_pointer (key, void *); + return hash_memory (v, vec_len (v) * h->user, 0); +} + +uword +vec_key_equal (hash_t * h, uword key1, uword key2) +{ + void *v1 = uword_to_pointer (key1, void *); + void *v2 = uword_to_pointer (key2, void *); + uword l1 = vec_len (v1); + uword l2 = vec_len (v2); + return l1 == l2 && 0 == memcmp (v1, v2, l1 * h->user); +} + +u8 * +vec_key_format_pair (u8 * s, va_list * args) +{ + void *CLIB_UNUSED (user_arg) = va_arg (*args, void *); + void *v = va_arg (*args, void *); + hash_pair_t *p = va_arg (*args, hash_pair_t *); + hash_t *h = hash_header (v); + void *u = uword_to_pointer (p->key, void *); + int i; + + switch (h->user) + { + case 1: + s = format (s, "%v", u); + break; + + case 2: + { + u16 *w = u; + for (i = 0; i < vec_len (w); i++) + s = format (s, "0x%x, ", w[i]); + break; + } + + case 4: + { + u32 *w = u; + for (i = 0; i < vec_len (w); i++) + s = format (s, "0x%x, ", w[i]); + break; + } + + case 8: + { + u64 *w = u; + for (i = 0; i < vec_len (w); i++) + s = format (s, "0x%Lx, ", w[i]); + break; + } + + default: + s = format (s, "0x%U", format_hex_bytes, u, vec_len (u) * h->user); + break; + } + + if (hash_value_bytes (h) > 0) + s = format (s, " -> 0x%wx", p->value[0]); + + return s; +} + +uword +mem_key_sum (hash_t * h, uword key) +{ + uword *v = uword_to_pointer (key, void *); + return hash_memory (v, h->user, 0); +} + +uword +mem_key_equal (hash_t * h, uword key1, uword key2) +{ + void *v1 = uword_to_pointer (key1, void *); + void *v2 = uword_to_pointer (key2, void *); + return v1 && v2 && 0 == memcmp (v1, v2, h->user); +} + +uword +string_key_sum (hash_t * h, uword key) +{ + char *v = uword_to_pointer (key, char *); + return hash_memory (v, strlen (v), 0); +} + +uword +string_key_equal (hash_t * h, uword key1, uword key2) +{ + void *v1 = uword_to_pointer (key1, void *); + void *v2 = uword_to_pointer (key2, void *); + return v1 && v2 && 0 == strcmp (v1, v2); +} + +u8 * +string_key_format_pair (u8 * s, va_list * args) +{ + void *CLIB_UNUSED (user_arg) = va_arg (*args, void *); + void *v = va_arg (*args, void *); + hash_pair_t *p = va_arg (*args, hash_pair_t *); + hash_t *h = hash_header (v); + void *u = uword_to_pointer (p->key, void *); + + s = format (s, "%s", u); + + if (hash_value_bytes (h) > 0) + s = + format (s, " -> 0x%8U", format_hex_bytes, &p->value[0], + hash_value_bytes (h)); + + return s; +} + +static u8 * +hash_format_pair_default (u8 * s, va_list * args) +{ + void *CLIB_UNUSED (user_arg) = va_arg (*args, void *); + void *v = va_arg (*args, void *); + hash_pair_t *p = va_arg (*args, hash_pair_t *); + hash_t *h = hash_header (v); + + s = format (s, "0x%08x", p->key); + if (hash_value_bytes (h) > 0) + s = + format (s, " -> 0x%8U", format_hex_bytes, &p->value[0], + hash_value_bytes (h)); + return s; +} + +uword +hash_bytes (void *v) +{ + uword i, bytes; + hash_t *h = hash_header (v); + + if (!v) + return 0; + + bytes = vec_capacity (v, hash_header_bytes (v)); + + for (i = 0; i < hash_capacity (v); i++) + { + if (!hash_is_user (v, i)) + { + hash_pair_union_t *p = get_pair (v, i); + if (h->log2_pair_size > 0) + bytes += 1 << indirect_pair_get_log2_bytes (&p->indirect); + else + bytes += vec_capacity (p->indirect.pairs, 0); + } + } + return bytes; +} + +u8 * +format_hash (u8 * s, va_list * va) +{ + void *v = va_arg (*va, void *); + int verbose = va_arg (*va, int); + hash_pair_t *p; + hash_t *h = hash_header (v); + uword i; + + s = format (s, "hash %p, %wd elts, capacity %wd, %wd bytes used,\n", + v, hash_elts (v), hash_capacity (v), hash_bytes (v)); + + { + uword *occupancy = 0; + + /* Count number of buckets with each occupancy. */ + for (i = 0; i < hash_capacity (v); i++) + { + uword j; + + if (hash_is_user (v, i)) + { + j = 1; + } + else + { + hash_pair_union_t *p = get_pair (v, i); + if (h->log2_pair_size > 0) + j = indirect_pair_get_len (&p->indirect); + else + j = vec_len (p->indirect.pairs); + } + + vec_validate (occupancy, j); + occupancy[j]++; + } + + s = format (s, " profile "); + for (i = 0; i < vec_len (occupancy); i++) + s = format (s, "%wd%c", occupancy[i], + i + 1 == vec_len (occupancy) ? '\n' : ' '); + + s = format (s, " lookup # of compares: "); + for (i = 1; i < vec_len (occupancy); i++) + s = format (s, "%wd: .%03d%c", i, + (1000 * i * occupancy[i]) / hash_elts (v), + i + 1 == vec_len (occupancy) ? '\n' : ' '); + + vec_free (occupancy); + } + + if (verbose) + { + /* *INDENT-OFF* */ + hash_foreach_pair (p, v, { + s = format (s, " %U\n", h->format_pair, h->format_pair_arg, v, p); + }); + /* *INDENT-ON* */ + } + + return s; +} + +static uword +unformat_hash_string_internal (unformat_input_t * input, + va_list * va, int is_vec) +{ + uword *hash = va_arg (*va, uword *); + int *result = va_arg (*va, int *); + u8 *string = 0; + uword *p; + + if (!unformat (input, is_vec ? "%v%_" : "%s%_", &string)) + return 0; + + p = hash_get_mem (hash, string); + if (p) + *result = *p; + + vec_free (string); + return p ? 1 : 0; +} + +uword +unformat_hash_vec_string (unformat_input_t * input, va_list * va) +{ + return unformat_hash_string_internal (input, va, /* is_vec */ 1); +} + +uword +unformat_hash_string (unformat_input_t * input, va_list * va) +{ + return unformat_hash_string_internal (input, va, /* is_vec */ 0); +} + +clib_error_t * +hash_validate (void *v) +{ + hash_t *h = hash_header (v); + uword i, j; + uword *keys = 0; + clib_error_t *error = 0; + +#define CHECK(x) if ((error = ERROR_ASSERT (x))) goto done; + + for (i = 0; i < hash_capacity (v); i++) + { + hash_pair_union_t *pu = get_pair (v, i); + + if (hash_is_user (v, i)) + { + CHECK (pu->direct.key != 0); + vec_add1 (keys, pu->direct.key); + } + else + { + hash_pair_t *p; + hash_pair_indirect_t *pi = &pu->indirect; + uword n; + + n = h->log2_pair_size > 0 + ? indirect_pair_get_len (pi) : vec_len (pi->pairs); + + for (p = pi->pairs; n-- > 0; p = hash_forward1 (h, p)) + { + /* Assert key uniqueness. */ + for (j = 0; j < vec_len (keys); j++) + CHECK (keys[j] != p->key); + vec_add1 (keys, p->key); + } + } + } + + CHECK (vec_len (keys) == h->elts); + + vec_free (keys); +done: + return error; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/hash.h b/src/vppinfra/hash.h new file mode 100644 index 00000000..4db5a576 --- /dev/null +++ b/src/vppinfra/hash.h @@ -0,0 +1,694 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001-2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_hash_h +#define included_hash_h + +#include <vppinfra/error.h> +#include <vppinfra/format.h> +#include <vppinfra/vec.h> +#include <vppinfra/vector.h> + +struct hash_header; + +typedef uword (hash_key_sum_function_t) (struct hash_header *, uword key); +typedef uword (hash_key_equal_function_t) + (struct hash_header *, uword key1, uword key2); + +/* Vector header for hash tables. */ +typedef struct hash_header +{ + /* Number of elements in hash table. */ + uword elts; + + /* Flags as follows. */ + u32 flags; + + /* Set if user does not want table to auto-resize when sufficiently full. */ +#define HASH_FLAG_NO_AUTO_GROW (1 << 0) + /* Set if user does not want table to auto-resize when sufficiently empty. */ +#define HASH_FLAG_NO_AUTO_SHRINK (1 << 1) + /* Set when hash_next is in the process of iterating through this hash table. */ +#define HASH_FLAG_HASH_NEXT_IN_PROGRESS (1 << 2) + + u32 log2_pair_size; + + /* Function to compute the "sum" of a hash key. + Hash function is this sum modulo the prime size of + the hash table (vec_len (v)). */ + hash_key_sum_function_t *key_sum; + + /* Special values for key_sum "function". */ +#define KEY_FUNC_NONE (0) /*< sum = key */ +#define KEY_FUNC_POINTER_UWORD (1) /*< sum = *(uword *) key */ +#define KEY_FUNC_POINTER_U32 (2) /*< sum = *(u32 *) key */ +#define KEY_FUNC_STRING (3) /*< sum = string_key_sum, etc. */ + + /* key comparison function */ + hash_key_equal_function_t *key_equal; + + /* Hook for user's data. Used to parameterize sum/equal functions. */ + any user; + + /* Format a (k,v) pair */ + format_function_t *format_pair; + + /* Format function arg */ + void *format_pair_arg; + + /* Bit i is set if pair i is a user object (as opposed to being + either zero or an indirect array of pairs). */ + uword is_user[0]; +} hash_t; + +/* Hash header size in bytes */ +always_inline uword +hash_header_bytes (void *v) +{ + hash_t *h; + uword is_user_bytes = + (sizeof (h->is_user[0]) * vec_len (v)) / BITS (h->is_user[0]); + return sizeof (h[0]) + is_user_bytes; +} + +/* Returns a pointer to the hash header given the vector pointer */ +always_inline hash_t * +hash_header (void *v) +{ + return vec_header (v, hash_header_bytes (v)); +} + +/* Number of elements in the hash table */ +always_inline uword +hash_elts (void *v) +{ + hash_t *h = hash_header (v); + return v ? h->elts : 0; +} + +/* Number of elements the hash table can hold */ +always_inline uword +hash_capacity (void *v) +{ + return vec_len (v); +} + +/* Returns 1 if the hash pair contains user data */ +always_inline uword +hash_is_user (void *v, uword i) +{ + hash_t *h = hash_header (v); + uword i0 = i / BITS (h->is_user[0]); + uword i1 = i % BITS (h->is_user[0]); + return (h->is_user[i0] & ((uword) 1 << i1)) != 0; +} + +/* Set the format function and format argument for a hash table */ +always_inline void +hash_set_pair_format (void *v, + format_function_t * format_pair, void *format_pair_arg) +{ + hash_t *h = hash_header (v); + h->format_pair = format_pair; + h->format_pair_arg = format_pair_arg; +} + +/* Set hash table flags */ +always_inline void +hash_set_flags (void *v, uword flags) +{ + hash_header (v)->flags |= flags; +} + +/* Key value pairs. */ +typedef struct +{ + /* The Key */ + uword key; + + /* The Value. Length is 2^log2_pair_size - 1. */ + uword value[0]; +} hash_pair_t; + +/* The indirect pair structure + + If log2_pair_size > 0 we overload hash pairs + with indirect pairs for buckets with more than one + pair. */ +typedef struct +{ + /* pair vector */ + hash_pair_t *pairs; + /* padding */ + u8 pad[sizeof (uword) - sizeof (hash_pair_t *)]; + /* allocated length */ + uword alloc_len; +} +hash_pair_indirect_t; + +/* Direct / Indirect pair union */ +typedef union +{ + hash_pair_t direct; + hash_pair_indirect_t indirect; +} hash_pair_union_t; + +#define LOG2_ALLOC_BITS (5) +#define PAIR_BITS (BITS (uword) - LOG2_ALLOC_BITS) + +/* Log2 number of bytes allocated in pairs array. */ +always_inline uword +indirect_pair_get_log2_bytes (hash_pair_indirect_t * p) +{ + return p->alloc_len >> PAIR_BITS; +} + +/* Get the length of an indirect pair */ +always_inline uword +indirect_pair_get_len (hash_pair_indirect_t * p) +{ + if (!p->pairs) + return 0; + else + return p->alloc_len & (((uword) 1 << PAIR_BITS) - 1); +} + +/* Set the length of an indirect pair */ +always_inline void +indirect_pair_set (hash_pair_indirect_t * p, uword log2_alloc, uword len) +{ + ASSERT (len < ((uword) 1 << PAIR_BITS)); + ASSERT (log2_alloc < ((uword) 1 << LOG2_ALLOC_BITS)); + p->alloc_len = (log2_alloc << PAIR_BITS) | len; +} + +/* internal routine to fetch value for given key */ +uword *_hash_get (void *v, uword key); + +/* internal routine to fetch value (key, value) pair for given key */ +hash_pair_t *_hash_get_pair (void *v, uword key); + +/* internal routine to unset a (key, value) pair */ +void *_hash_unset (void *v, uword key, void *old_value); + +/* internal routine to set a (key, value) pair, return the old value */ +void *_hash_set3 (void *v, uword key, void *value, void *old_value); + +/* Resize a hash table */ +void *hash_resize (void *old, uword new_size); + +/* duplicate a hash table */ +void *hash_dup (void *old); + +/* Returns the number of bytes used by a hash table */ +uword hash_bytes (void *v); + +/* Public macro to set a (key, value) pair, return the old value */ +#define hash_set3(h,key,value,old_value) \ +({ \ + uword _v = (uword) (value); \ + (h) = _hash_set3 ((h), (uword) (key), (void *) &_v, (old_value)); \ +}) + +/* Public macro to fetch value for given key */ +#define hash_get(h,key) _hash_get ((h), (uword) (key)) + +/* Public macro to fetch value (key, value) pair for given key */ +#define hash_get_pair(h,key) _hash_get_pair ((h), (uword) (key)) + +/* Public macro to set a (key, value) pair */ +#define hash_set(h,key,value) hash_set3(h,key,value,0) + +/* Public macro to set (key, 0) pair */ +#define hash_set1(h,key) (h) = _hash_set3(h,(uword) (key),0,0) + +/* Public macro to unset a (key, value) pair */ +#define hash_unset(h,key) ((h) = _hash_unset ((h), (uword) (key),0)) + +/* Public macro to unset a (key, value) pair, return the old value */ +#define hash_unset3(h,key,old_value) ((h) = _hash_unset ((h), (uword) (key), (void *) (old_value))) + +/* get/set/unset for pointer keys. */ + +/* Public macro to fetch value for given pointer key */ +#define hash_get_mem(h,key) _hash_get ((h), pointer_to_uword (key)) + +/* Public macro to fetch (key, value) for given pointer key */ +#define hash_get_pair_mem(h,key) _hash_get_pair ((h), pointer_to_uword (key)) + +/* Public macro to set (key, value) for pointer key */ +#define hash_set_mem(h,key,value) hash_set3 (h, pointer_to_uword (key), (value), 0) + +/* Public macro to set (key, 0) for pointer key */ +#define hash_set1_mem(h,key) hash_set3 ((h), pointer_to_uword (key), 0, 0) + +/* Public macro to unset (key, value) for pointer key */ +#define hash_unset_mem(h,key) ((h) = _hash_unset ((h), pointer_to_uword (key),0)) + +/* internal routine to free a hash table */ +extern void *_hash_free (void *v); + +/* Public macro to free a hash table */ +#define hash_free(h) (h) = _hash_free ((h)) + +clib_error_t *hash_validate (void *v); + +/* Public inline funcion to get the number of value bytes for a hash table */ +always_inline uword +hash_value_bytes (hash_t * h) +{ + hash_pair_t *p; + return (sizeof (p->value[0]) << h->log2_pair_size) - sizeof (p->key); +} + +/* Public inline funcion to get log2(size of a (key,value) pair) */ +always_inline uword +hash_pair_log2_bytes (hash_t * h) +{ + uword log2_bytes = h->log2_pair_size; + ASSERT (BITS (hash_pair_t) == 32 || BITS (hash_pair_t) == 64); + if (BITS (hash_pair_t) == 32) + log2_bytes += 2; + else if (BITS (hash_pair_t) == 64) + log2_bytes += 3; + return log2_bytes; +} + +/* Public inline funcion to get size of a (key,value) pair */ +always_inline uword +hash_pair_bytes (hash_t * h) +{ + return (uword) 1 << hash_pair_log2_bytes (h); +} + +/* Public inline funcion to advance a pointer past one (key,value) pair */ +always_inline void * +hash_forward1 (hash_t * h, void *v) +{ + return (u8 *) v + hash_pair_bytes (h); +} + +/* Public inline funcion to advance a pointer past N (key,value) pairs */ +always_inline void * +hash_forward (hash_t * h, void *v, uword n) +{ + return (u8 *) v + ((n * sizeof (hash_pair_t)) << h->log2_pair_size); +} + +/** Iterate over hash pairs. + + @param p The current (key,value) pair. This should be of type + <code>(hash_pair_t *)</code>. + @param v The hash table to iterate. + @param body The operation to perform on each (key,value) pair. + + Executes the expression or code block @c body with each active hash pair. +*/ +/* A previous version of this macro made use of the hash_pair_union_t + * structure; this version does not since that approach mightily upset + * the static analysis tool. In the rare chance someone is reading this + * code, pretend that _p below is of type hash_pair_union_t and that when + * used as an rvalue it's really using one of the union members as the + * rvalue. If you were confused before you might be marginally less + * confused after. + */ +#define hash_foreach_pair(p,v,body) \ +do { \ + __label__ _hash_foreach_done; \ + hash_t * _h = hash_header (v); \ + void * _p; \ + hash_pair_t * _q, * _q_end; \ + uword _i, _i1, _id, _pair_increment; \ + \ + _p = (v); \ + _i = 0; \ + _pair_increment = 1; \ + if ((v)) \ + _pair_increment = 1 << _h->log2_pair_size; \ + while (_i < hash_capacity (v)) \ + { \ + _id = _h->is_user[_i / BITS (_h->is_user[0])]; \ + _i1 = _i + BITS (_h->is_user[0]); \ + \ + do { \ + if (_id & 1) \ + { \ + _q = _p; \ + _q_end = _q + _pair_increment; \ + } \ + else \ + { \ + hash_pair_indirect_t * _pi = _p; \ + _q = _pi->pairs; \ + if (_h->log2_pair_size > 0) \ + _q_end = hash_forward (_h, _q, indirect_pair_get_len (_pi)); \ + else \ + _q_end = vec_end (_q); \ + } \ + \ + /* Loop through all elements in bucket. \ + Bucket may have 0 1 or more (indirect case) pairs. */ \ + while (_q < _q_end) \ + { \ + uword _break_in_body = 1; \ + (p) = _q; \ + do { \ + body; \ + _break_in_body = 0; \ + } while (0); \ + if (_break_in_body) \ + goto _hash_foreach_done; \ + _q += _pair_increment; \ + } \ + \ + _p = (hash_pair_t *)_p + _pair_increment; \ + _id = _id / 2; \ + _i++; \ + } while (_i < _i1); \ + } \ + _hash_foreach_done: \ + /* Be silent Mr. Compiler-Warning. */ \ + ; \ + } while (0) + +/* Iterate over key/value pairs + + @param key_var the current key + @param value_var the current value + @param h the hash table to iterate across + @param body the operation to perform on each (key_var,value_var) pair. + + calls body with each active hash pair +*/ +/* Iteratate over key/value pairs. */ +#define hash_foreach(key_var,value_var,h,body) \ +do { \ + hash_pair_t * _r; \ + hash_foreach_pair (_r, (h), { \ + (key_var) = (__typeof__ (key_var)) _r->key; \ + (value_var) = (__typeof__ (value_var)) _r->value[0]; \ + do { body; } while (0); \ + }); \ +} while (0) + +/* Iterate over key/value pairs for pointer key hash tables + + @param key_var the current key + @param value_var the current value + @param h the hash table to iterate across + @param body the operation to perform on each (key_var,value_var) pair. + + calls body with each active hash pair +*/ +#define hash_foreach_mem(key_var,value_var,h,body) \ +do { \ + hash_pair_t * _r; \ + hash_foreach_pair (_r, (h), { \ + (key_var) = (__typeof__ (key_var)) uword_to_pointer (_r->key, void *); \ + (value_var) = (__typeof__ (value_var)) _r->value[0]; \ + do { body; } while (0); \ + }); \ +} while (0) + +/* Support for iteration through hash table. */ + +/* This struct saves iteration state for hash_next. + None of these fields are meant to be visible to the user. + Hence, the cryptic short-hand names. */ +typedef struct +{ + uword i, j, f; +} hash_next_t; + +hash_pair_t *hash_next (void *v, hash_next_t * hn); + +void *_hash_create (uword elts, hash_t * h); + +always_inline void +hash_set_value_bytes (hash_t * h, uword value_bytes) +{ + hash_pair_t *p; + h->log2_pair_size = + max_log2 ((sizeof (p->key) + value_bytes + sizeof (p->key) - + 1) / sizeof (p->key)); +} + +#define hash_create2(_elts,_user,_value_bytes, \ + _key_sum,_key_equal, \ + _format_pair,_format_pair_arg) \ +({ \ + hash_t _h; \ + memset (&_h, 0, sizeof (_h)); \ + _h.user = (_user); \ + _h.key_sum = (hash_key_sum_function_t *) (_key_sum); \ + _h.key_equal = (_key_equal); \ + hash_set_value_bytes (&_h, (_value_bytes)); \ + _h.format_pair = (format_function_t *) (_format_pair); \ + _h.format_pair_arg = (_format_pair_arg); \ + _hash_create ((_elts), &_h); \ +}) + +/* Hash function based on that of Bob Jenkins (bob_jenkins@compuserve.com). + Public domain per: http://www.burtleburtle.net/bob/hash/doobs.html + Thanks, Bob. */ + +#define hash_mix_step(a,b,c,s0,s1,s2) \ +do { \ + (a) -= (b) + (c); (a) ^= (c) >> (s0); \ + (b) -= (c) + (a); (b) ^= (a) << (s1); \ + (c) -= (a) + (b); (c) ^= (b) >> (s2); \ +} while (0) + +#define hash_mix32_step_1(a,b,c) hash_mix_step(a,b,c,13,8,13) +#define hash_mix32_step_2(a,b,c) hash_mix_step(a,b,c,12,16,5) +#define hash_mix32_step_3(a,b,c) hash_mix_step(a,b,c,3,10,15) + +#define hash_mix64_step_1(a,b,c) hash_mix_step(a,b,c,43,9,8) +#define hash_mix64_step_2(a,b,c) hash_mix_step(a,b,c,38,23,5) +#define hash_mix64_step_3(a,b,c) hash_mix_step(a,b,c,35,49,11) +#define hash_mix64_step_4(a,b,c) hash_mix_step(a,b,c,12,18,22) + +/* Hash function based on that of Bob Jenkins (bob_jenkins@compuserve.com). + Thanks, Bob. */ +#define hash_mix64(a0,b0,c0) \ +do { \ + hash_mix64_step_1 (a0, b0, c0); \ + hash_mix64_step_2 (a0, b0, c0); \ + hash_mix64_step_3 (a0, b0, c0); \ + hash_mix64_step_4 (a0, b0, c0); \ +} while (0) \ + +#define hash_mix32(a0,b0,c0) \ +do { \ + hash_mix32_step_1 (a0, b0, c0); \ + hash_mix32_step_2 (a0, b0, c0); \ + hash_mix32_step_3 (a0, b0, c0); \ +} while (0) \ + +/* Finalize from Bob Jenkins lookup3.c */ + +always_inline uword +hash32_rotate_left (u32 x, u32 i) +{ + return (x << i) | (x >> (BITS (i) - i)); +} + +#define hash_v3_mix32(a,b,c) \ +do { \ + (a) -= (c); (a) ^= hash32_rotate_left ((c), 4); (c) += (b); \ + (b) -= (a); (b) ^= hash32_rotate_left ((a), 6); (a) += (c); \ + (c) -= (b); (c) ^= hash32_rotate_left ((b), 8); (b) += (a); \ + (a) -= (c); (a) ^= hash32_rotate_left ((c),16); (c) += (b); \ + (b) -= (a); (b) ^= hash32_rotate_left ((a),19); (a) += (c); \ + (c) -= (b); (c) ^= hash32_rotate_left ((b), 4); (b) += (a); \ +} while (0) + +#define hash_v3_finalize32(a,b,c) \ +do { \ + (c) ^= (b); (c) -= hash32_rotate_left ((b), 14); \ + (a) ^= (c); (a) -= hash32_rotate_left ((c), 11); \ + (b) ^= (a); (b) -= hash32_rotate_left ((a), 25); \ + (c) ^= (b); (c) -= hash32_rotate_left ((b), 16); \ + (a) ^= (c); (a) -= hash32_rotate_left ((c), 4); \ + (b) ^= (a); (b) -= hash32_rotate_left ((a), 14); \ + (c) ^= (b); (c) -= hash32_rotate_left ((b), 24); \ +} while (0) + +/* 32 bit mixing/finalize in steps. */ + +#define hash_v3_mix32_step1(a,b,c) \ +do { \ + (a) -= (c); (a) ^= hash32_rotate_left ((c), 4); (c) += (b); \ + (b) -= (a); (b) ^= hash32_rotate_left ((a), 6); (a) += (c); \ +} while (0) + +#define hash_v3_mix32_step2(a,b,c) \ +do { \ + (c) -= (b); (c) ^= hash32_rotate_left ((b), 8); (b) += (a); \ + (a) -= (c); (a) ^= hash32_rotate_left ((c),16); (c) += (b); \ +} while (0) + +#define hash_v3_mix32_step3(a,b,c) \ +do { \ + (b) -= (a); (b) ^= hash32_rotate_left ((a),19); (a) += (c); \ + (c) -= (b); (c) ^= hash32_rotate_left ((b), 4); (b) += (a); \ +} while (0) + +#define hash_v3_finalize32_step1(a,b,c) \ +do { \ + (c) ^= (b); (c) -= hash32_rotate_left ((b), 14); \ + (a) ^= (c); (a) -= hash32_rotate_left ((c), 11); \ +} while (0) + +#define hash_v3_finalize32_step2(a,b,c) \ +do { \ + (b) ^= (a); (b) -= hash32_rotate_left ((a), 25); \ + (c) ^= (b); (c) -= hash32_rotate_left ((b), 16); \ +} while (0) + +#define hash_v3_finalize32_step3(a,b,c) \ +do { \ + (a) ^= (c); (a) -= hash32_rotate_left ((c), 4); \ + (b) ^= (a); (b) -= hash32_rotate_left ((a), 14); \ + (c) ^= (b); (c) -= hash32_rotate_left ((b), 24); \ +} while (0) + +/* Vector v3 mixing/finalize. */ +#define hash_v3_mix_step_1_u32x(a,b,c) \ +do { \ + (a) -= (c); (a) ^= u32x_irotate_left ((c), 4); (c) += (b); \ + (b) -= (a); (b) ^= u32x_irotate_left ((a), 6); (a) += (c); \ + (c) -= (b); (c) ^= u32x_irotate_left ((b), 8); (b) += (a); \ +} while (0) + +#define hash_v3_mix_step_2_u32x(a,b,c) \ +do { \ + (a) -= (c); (a) ^= u32x_irotate_left ((c),16); (c) += (b); \ + (b) -= (a); (b) ^= u32x_irotate_left ((a),19); (a) += (c); \ + (c) -= (b); (c) ^= u32x_irotate_left ((b), 4); (b) += (a); \ +} while (0) + +#define hash_v3_finalize_step_1_u32x(a,b,c) \ +do { \ + (c) ^= (b); (c) -= u32x_irotate_left ((b), 14); \ + (a) ^= (c); (a) -= u32x_irotate_left ((c), 11); \ + (b) ^= (a); (b) -= u32x_irotate_left ((a), 25); \ +} while (0) + +#define hash_v3_finalize_step_2_u32x(a,b,c) \ +do { \ + (c) ^= (b); (c) -= u32x_irotate_left ((b), 16); \ + (a) ^= (c); (a) -= u32x_irotate_left ((c), 4); \ + (b) ^= (a); (b) -= u32x_irotate_left ((a), 14); \ + (c) ^= (b); (c) -= u32x_irotate_left ((b), 24); \ +} while (0) + +#define hash_v3_mix_u32x(a,b,c) \ +do { \ + hash_v3_mix_step_1_u32x(a,b,c); \ + hash_v3_mix_step_2_u32x(a,b,c); \ +} while (0) + +#define hash_v3_finalize_u32x(a,b,c) \ +do { \ + hash_v3_finalize_step_1_u32x(a,b,c); \ + hash_v3_finalize_step_2_u32x(a,b,c); \ +} while (0) + +extern uword hash_memory (void *p, word n_bytes, uword state); + +extern uword mem_key_sum (hash_t * h, uword key); +extern uword mem_key_equal (hash_t * h, uword key1, uword key2); + +#define hash_create_mem(elts,key_bytes,value_bytes) \ + hash_create2((elts),(key_bytes),(value_bytes),mem_key_sum,mem_key_equal,0,0) + +extern uword vec_key_sum (hash_t * h, uword key); +extern uword vec_key_equal (hash_t * h, uword key1, uword key2); +extern u8 *vec_key_format_pair (u8 * s, va_list * args); + +#define hash_create_vec(elts,key_bytes,value_bytes) \ + hash_create2((elts),(key_bytes),(value_bytes),\ + vec_key_sum,vec_key_equal,vec_key_format_pair,0) + +extern uword string_key_sum (hash_t * h, uword key); +extern uword string_key_equal (hash_t * h, uword key1, uword key2); +extern u8 *string_key_format_pair (u8 * s, va_list * args); + +#define hash_create_string(elts,value_bytes) \ + hash_create2((elts),0,(value_bytes), \ + (hash_key_sum_function_t *) KEY_FUNC_STRING, \ + (hash_key_equal_function_t *)KEY_FUNC_STRING, \ + 0, 0) + +#define hash_create(elts,value_bytes) \ + hash_create2((elts),0,(value_bytes), \ + (hash_key_sum_function_t *) KEY_FUNC_NONE, \ + (hash_key_equal_function_t *) KEY_FUNC_NONE, \ + 0,0) + +#define hash_create_uword(elts,value_bytes) \ + hash_create2((elts),0,(value_bytes), \ + (hash_key_sum_function_t *) KEY_FUNC_POINTER_UWORD, \ + (hash_key_equal_function_t *) KEY_FUNC_POINTER_UWORD, \ + 0,0) + +#define hash_create_u32(elts,value_bytes) \ + hash_create2((elts),0,(value_bytes), \ + (hash_key_sum_function_t *) KEY_FUNC_POINTER_U32, \ + (hash_key_equal_function_t *) KEY_FUNC_POINTER_U32, \ + 0,0) + +u8 *format_hash (u8 * s, va_list * va); + +/* Looks up input in hash table indexed by either vec string or + c string (null terminated). */ +unformat_function_t unformat_hash_vec_string; +unformat_function_t unformat_hash_string; + +/* Main test routine. */ +int test_hash_main (unformat_input_t * input); + +#endif /* included_hash_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/heap.c b/src/vppinfra/heap.c new file mode 100644 index 00000000..2a5fb5c8 --- /dev/null +++ b/src/vppinfra/heap.c @@ -0,0 +1,828 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/cache.h> /* for CLIB_CACHE_LINE_BYTES */ +#include <vppinfra/mem.h> +#include <vppinfra/hash.h> +#include <vppinfra/vec.h> +#include <vppinfra/heap.h> +#include <vppinfra/error.h> + +always_inline heap_elt_t * +elt_at (heap_header_t * h, uword i) +{ + ASSERT (i < vec_len (h->elts)); + return h->elts + i; +} + +always_inline heap_elt_t * +last (heap_header_t * h) +{ + return elt_at (h, h->tail); +} + +always_inline heap_elt_t * +first (heap_header_t * h) +{ + return elt_at (h, h->head); +} + +/* Objects sizes are binned into N_BINS bins. + Objects with size <= SMALL_BINS have their own bins. + Larger objects are grouped together in power or 2 sized + bins. + + Sizes are in units of elt_bytes bytes. */ + +/* Convert size to bin. */ +always_inline uword +size_to_bin (uword size) +{ + uword bin; + + ASSERT (size > 0); + + if (size <= HEAP_SMALL_BINS) + { + bin = size - 1; + if (size == 0) + bin = 0; + } + else + { + bin = HEAP_SMALL_BINS + max_log2 (size) - (HEAP_LOG2_SMALL_BINS + 1); + if (bin >= HEAP_N_BINS) + bin = HEAP_N_BINS - 1; + } + + return bin; +} + +/* Convert bin to size. */ +always_inline __attribute__ ((unused)) + uword bin_to_size (uword bin) +{ + uword size; + + if (bin <= HEAP_SMALL_BINS - 1) + size = bin + 1; + else + size = (uword) 1 << ((bin - HEAP_SMALL_BINS) + HEAP_LOG2_SMALL_BINS + 1); + + return size; +} + +static void +elt_delete (heap_header_t * h, heap_elt_t * e) +{ + heap_elt_t *l = vec_end (h->elts) - 1; + + ASSERT (e >= h->elts && e <= l); + + /* Update doubly linked pointers. */ + { + heap_elt_t *p = heap_prev (e); + heap_elt_t *n = heap_next (e); + + if (p == e) + { + n->prev = 0; + h->head = n - h->elts; + } + else if (n == e) + { + p->next = 0; + h->tail = p - h->elts; + } + else + { + p->next = n - p; + n->prev = p - n; + } + } + + /* Add to index free list or delete from end. */ + if (e < l) + vec_add1 (h->free_elts, e - h->elts); + else + _vec_len (h->elts)--; +} + +/* + Before: P ... E + After : P ... NEW ... E +*/ +always_inline void +elt_insert_before (heap_header_t * h, heap_elt_t * e, heap_elt_t * new) +{ + heap_elt_t *p = heap_prev (e); + + if (p == e) + { + new->prev = 0; + new->next = e - new; + p->prev = new - p; + h->head = new - h->elts; + } + else + { + new->prev = p - new; + new->next = e - new; + e->prev = new - e; + p->next = new - p; + } +} + +/* + Before: E ... N + After : E ... NEW ... N +*/ +always_inline void +elt_insert_after (heap_header_t * h, heap_elt_t * e, heap_elt_t * new) +{ + heap_elt_t *n = heap_next (e); + + if (n == e) + { + new->next = 0; + new->prev = e - new; + e->next = new - e; + h->tail = new - h->elts; + } + else + { + new->prev = e - new; + new->next = n - new; + e->next = new - e; + n->prev = new - n; + } +} + +always_inline heap_elt_t * +elt_new (heap_header_t * h) +{ + heap_elt_t *e; + uword l; + if ((l = vec_len (h->free_elts)) > 0) + { + e = elt_at (h, h->free_elts[l - 1]); + _vec_len (h->free_elts) -= 1; + } + else + vec_add2 (h->elts, e, 1); + return e; +} + +/* Return pointer to object at given offset. + Used to write free list index of free objects. */ +always_inline u32 * +elt_data (void *v, heap_elt_t * e) +{ + heap_header_t *h = heap_header (v); + return v + heap_offset (e) * h->elt_bytes; +} + +always_inline void +set_free_elt (void *v, heap_elt_t * e, uword fi) +{ + heap_header_t *h = heap_header (v); + + e->offset |= HEAP_ELT_FREE_BIT; + if (h->elt_bytes >= sizeof (u32)) + { + *elt_data (v, e) = fi; + } + else + { + /* For elt_bytes < 4 we must store free index in separate + vector. */ + uword elt_index = e - h->elts; + vec_validate (h->small_free_elt_free_index, elt_index); + h->small_free_elt_free_index[elt_index] = fi; + } +} + +always_inline uword +get_free_elt (void *v, heap_elt_t * e, uword * bin_result) +{ + heap_header_t *h = heap_header (v); + uword fb, fi; + + ASSERT (heap_is_free (e)); + fb = size_to_bin (heap_elt_size (v, e)); + + if (h->elt_bytes >= sizeof (u32)) + { + fi = *elt_data (v, e); + } + else + { + uword elt_index = e - h->elts; + fi = vec_elt (h->small_free_elt_free_index, elt_index); + } + + *bin_result = fb; + return fi; +} + +always_inline void +remove_free_block (void *v, uword b, uword i) +{ + heap_header_t *h = heap_header (v); + uword l; + + ASSERT (b < vec_len (h->free_lists)); + ASSERT (i < vec_len (h->free_lists[b])); + + l = vec_len (h->free_lists[b]); + + if (i < l - 1) + { + uword t = h->free_lists[b][l - 1]; + h->free_lists[b][i] = t; + set_free_elt (v, elt_at (h, t), i); + } + _vec_len (h->free_lists[b]) = l - 1; +} + +static heap_elt_t * +search_free_list (void *v, uword size) +{ + heap_header_t *h = heap_header (v); + heap_elt_t *f, *u; + uword b, fb, f_size, f_index; + word s, l; + + if (!v) + return 0; + + /* Search free lists for bins >= given size. */ + for (b = size_to_bin (size); b < vec_len (h->free_lists); b++) + if ((l = vec_len (h->free_lists[b])) > 0) + { + /* Find an object that is large enough. + Search list in reverse so that more recently freed objects will be + allocated again sooner. */ + do + { + l--; + f_index = h->free_lists[b][l]; + f = elt_at (h, f_index); + f_size = heap_elt_size (v, f); + if ((s = f_size - size) >= 0) + break; + } + while (l >= 0); + + /* If we fail to find a large enough object, try the next larger size. */ + if (l < 0) + continue; + + ASSERT (heap_is_free (f)); + + /* Link in used object (u) after free object (f). */ + if (s == 0) + { + u = f; + fb = HEAP_N_BINS; + } + else + { + u = elt_new (h); + f = elt_at (h, f_index); + elt_insert_after (h, f, u); + fb = size_to_bin (s); + } + + u->offset = heap_offset (f) + s; + + if (fb != b) + { + if (fb < HEAP_N_BINS) + { + uword i; + vec_validate (h->free_lists, fb); + i = vec_len (h->free_lists[fb]); + vec_add1 (h->free_lists[fb], f - h->elts); + set_free_elt (v, f, i); + } + + remove_free_block (v, b, l); + } + + return u; + } + + return 0; +} + +static void combine_free_blocks (void *v, heap_elt_t * e0, heap_elt_t * e1); + +static inline void +dealloc_elt (void *v, heap_elt_t * e) +{ + heap_header_t *h = heap_header (v); + uword b, l; + heap_elt_t *n, *p; + + b = size_to_bin (heap_elt_size (v, e)); + vec_validate (h->free_lists, b); + l = vec_len (h->free_lists[b]); + vec_add1 (h->free_lists[b], e - h->elts); + set_free_elt (v, e, l); + + /* See if we can combine the block we just freed with neighboring free blocks. */ + p = heap_prev (e); + if (!heap_is_free (p)) + p = e; + + n = heap_next (e); + if (!heap_is_free (n)) + n = e; + + if (p != n) + combine_free_blocks (v, p, n); +} + +void * +_heap_alloc (void *v, + uword size, + uword align, + uword elt_bytes, uword * offset_return, uword * handle_return) +{ + uword offset = 0, align_size; + heap_header_t *h; + heap_elt_t *e; + + if (size == 0) + goto error; + + /* Round up alignment to power of 2. */ + if (align <= 1) + { + align = 0; + align_size = size; + } + else + { + align = max_pow2 (align); + align_size = size + align - 1; + } + + e = search_free_list (v, align_size); + + /* If nothing found on free list, allocate object from end of vector. */ + if (!e) + { + uword max_len; + + offset = vec_len (v); + max_len = heap_get_max_len (v); + + if (max_len && offset + align_size > max_len) + goto error; + + h = heap_header (v); + if (!v || !(h->flags & HEAP_IS_STATIC)) + v = _vec_resize (v, + align_size, + (offset + align_size) * elt_bytes, + sizeof (h[0]), HEAP_DATA_ALIGN); + else + _vec_len (v) += align_size; + + if (offset == 0) + { + h = heap_header (v); + h->elt_bytes = elt_bytes; + } + } + + h = heap_header (v); + + /* Add new element to doubly linked chain of elements. */ + if (!e) + { + e = elt_new (h); + e->offset = offset; + elt_insert_after (h, last (h), e); + } + + if (align > 0) + { + uword e_index; + uword new_offset, old_offset; + + old_offset = e->offset; + new_offset = (old_offset + align - 1) & ~(align - 1); + e->offset = new_offset; + e_index = e - h->elts; + + /* Free fragments before and after aligned object. */ + if (new_offset > old_offset) + { + heap_elt_t *before_e = elt_new (h); + before_e->offset = old_offset; + elt_insert_before (h, h->elts + e_index, before_e); + dealloc_elt (v, before_e); + } + + if (new_offset + size < old_offset + align_size) + { + heap_elt_t *after_e = elt_new (h); + after_e->offset = new_offset + size; + elt_insert_after (h, h->elts + e_index, after_e); + dealloc_elt (v, after_e); + } + + e = h->elts + e_index; + } + + h->used_count++; + + /* Keep track of used elements when debugging. + This allows deallocation to check that passed objects are valid. */ + if (CLIB_DEBUG > 0) + { + uword handle = e - h->elts; + ASSERT (!clib_bitmap_get (h->used_elt_bitmap, handle)); + h->used_elt_bitmap = clib_bitmap_ori (h->used_elt_bitmap, handle); + } + + *offset_return = e->offset; + *handle_return = e - h->elts; + return v; + +error: + *offset_return = *handle_return = ~0; + return v; +} + +void +heap_dealloc (void *v, uword handle) +{ + heap_header_t *h = heap_header (v); + heap_elt_t *e; + + ASSERT (handle < vec_len (h->elts)); + + /* For debugging we keep track of indices for valid objects. + We make sure user is not trying to free object with an invalid index. */ + if (CLIB_DEBUG > 0) + { + ASSERT (clib_bitmap_get (h->used_elt_bitmap, handle)); + h->used_elt_bitmap = clib_bitmap_andnoti (h->used_elt_bitmap, handle); + } + + h->used_count--; + + e = h->elts + handle; + ASSERT (!heap_is_free (e)); + + dealloc_elt (v, e); +} + +/* While freeing objects at INDEX we noticed free blocks i0 <= index and + i1 >= index. We combine these two or three blocks into one big free block. */ +static void +combine_free_blocks (void *v, heap_elt_t * e0, heap_elt_t * e1) +{ + heap_header_t *h = heap_header (v); + uword total_size, i, b, tb, ti, i_last, g_offset; + heap_elt_t *e; + + struct + { + u32 index; + u32 bin; + u32 bin_index; + } f[3], g; + + /* Compute total size of free objects i0 through i1. */ + total_size = 0; + for (i = 0, e = e0; 1; e = heap_next (e), i++) + { + ASSERT (i < ARRAY_LEN (f)); + + ti = get_free_elt (v, e, &tb); + + ASSERT (tb < vec_len (h->free_lists)); + ASSERT (ti < vec_len (h->free_lists[tb])); + + f[i].index = h->free_lists[tb][ti]; + f[i].bin = tb; + f[i].bin_index = ti; + + total_size += heap_elt_size (v, elt_at (h, f[i].index)); + + if (e == e1) + { + i_last = i; + break; + } + } + + /* Compute combined bin. See if all objects can be + combined into existing bin. */ + b = size_to_bin (total_size); + g.index = g.bin_index = 0; + for (i = 0; i <= i_last; i++) + if (b == f[i].bin) + { + g = f[i]; + break; + } + + /* Make sure we found a bin. */ + if (i > i_last) + { + g.index = elt_new (h) - h->elts; + vec_validate (h->free_lists, b); + g.bin_index = vec_len (h->free_lists[b]); + vec_add1 (h->free_lists[b], g.index); + elt_insert_before (h, elt_at (h, f[0].index), elt_at (h, g.index)); + } + + g_offset = elt_at (h, f[0].index)->offset; + + /* Delete unused bins. */ + for (i = 0; i <= i_last; i++) + if (g.index != f[i].index) + { + ti = get_free_elt (v, elt_at (h, f[i].index), &tb); + remove_free_block (v, tb, ti); + elt_delete (h, elt_at (h, f[i].index)); + } + + /* Initialize new element. */ + elt_at (h, g.index)->offset = g_offset; + set_free_elt (v, elt_at (h, g.index), g.bin_index); +} + +uword +heap_len (void *v, word handle) +{ + heap_header_t *h = heap_header (v); + + if (CLIB_DEBUG > 0) + ASSERT (clib_bitmap_get (h->used_elt_bitmap, handle)); + return heap_elt_size (v, elt_at (h, handle)); +} + +void * +_heap_free (void *v) +{ + heap_header_t *h = heap_header (v); + uword b; + + if (!v) + return v; + + clib_bitmap_free (h->used_elt_bitmap); + for (b = 0; b < vec_len (h->free_lists); b++) + vec_free (h->free_lists[b]); + vec_free (h->free_lists); + vec_free (h->elts); + vec_free (h->free_elts); + vec_free (h->small_free_elt_free_index); + if (!(h->flags & HEAP_IS_STATIC)) + vec_free_h (v, sizeof (h[0])); + return v; +} + +uword +heap_bytes (void *v) +{ + heap_header_t *h = heap_header (v); + uword bytes, b; + + if (!v) + return 0; + + bytes = sizeof (h[0]); + bytes += vec_len (v) * sizeof (h->elt_bytes); + for (b = 0; b < vec_len (h->free_lists); b++) + bytes += vec_capacity (h->free_lists[b], 0); + bytes += vec_bytes (h->free_lists); + bytes += vec_capacity (h->elts, 0); + bytes += vec_capacity (h->free_elts, 0); + bytes += vec_bytes (h->used_elt_bitmap); + + return bytes; +} + +static u8 * +debug_elt (u8 * s, void *v, word i, word n) +{ + heap_elt_t *e, *e0, *e1; + heap_header_t *h = heap_header (v); + word j; + + if (vec_len (h->elts) == 0) + return s; + + if (i < 0) + e0 = first (h); + else + { + e0 = h->elts + i; + for (j = 0; j < n / 2; j++) + e0 = heap_prev (e0); + } + + if (n < 0) + e1 = h->elts + h->tail; + else + { + e1 = h->elts + i; + for (j = 0; j < n / 2; j++) + e1 = heap_next (e1); + } + + i = -n / 2; + for (e = e0; 1; e = heap_next (e)) + { + if (heap_is_free (e)) + s = format (s, "index %4d, free\n", e - h->elts); + else if (h->format_elt) + s = format (s, "%U", h->format_elt, v, elt_data (v, e)); + else + s = format (s, "index %4d, used\n", e - h->elts); + i++; + if (e == e1) + break; + } + + return s; +} + +u8 * +format_heap (u8 * s, va_list * va) +{ + void *v = va_arg (*va, void *); + uword verbose = va_arg (*va, uword); + heap_header_t *h = heap_header (v); + heap_header_t zero; + + memset (&zero, 0, sizeof (zero)); + + if (!v) + h = &zero; + + { + f64 elt_bytes = vec_len (v) * h->elt_bytes; + f64 overhead_bytes = heap_bytes (v); + + s = format (s, "heap %p, %6d objects, size %.1fk + overhead %.1fk\n", + v, h->used_count, elt_bytes / 1024, + (overhead_bytes - elt_bytes) / 1024); + } + + if (v && verbose) + s = debug_elt (s, v, -1, -1); + + return s; +} + +void +heap_validate (void *v) +{ + heap_header_t *h = heap_header (v); + uword i, o, s; + u8 *free_map; + heap_elt_t *e, *n; + + uword used_count, total_size; + uword free_count, free_size; + + ASSERT (h->used_count == clib_bitmap_count_set_bits (h->used_elt_bitmap)); + + ASSERT (first (h)->prev == 0); + ASSERT (last (h)->next == 0); + + /* Validate number of elements and size. */ + free_size = free_count = 0; + for (i = 0; i < vec_len (h->free_lists); i++) + { + free_count += vec_len (h->free_lists[i]); + for (o = 0; o < vec_len (h->free_lists[i]); o++) + { + e = h->elts + h->free_lists[i][o]; + s = heap_elt_size (v, e); + ASSERT (size_to_bin (s) == i); + ASSERT (heap_is_free (e)); + free_size += s; + } + } + + { + uword elt_free_size, elt_free_count; + + used_count = total_size = elt_free_size = elt_free_count = 0; + for (e = first (h); 1; e = n) + { + int is_free = heap_is_free (e); + used_count++; + s = heap_elt_size (v, e); + total_size += s; + ASSERT (is_free == + !clib_bitmap_get (h->used_elt_bitmap, e - h->elts)); + if (is_free) + { + elt_free_count++; + elt_free_size += s; + } + n = heap_next (e); + if (e == n) + { + ASSERT (last (h) == n); + break; + } + + /* We should never have two free adjacent elements. */ + ASSERT (!(heap_is_free (e) && heap_is_free (n))); + } + + ASSERT (free_count == elt_free_count); + ASSERT (free_size == elt_free_size); + ASSERT (used_count == h->used_count + free_count); + ASSERT (total_size == vec_len (v)); + } + + free_map = vec_new (u8, used_count); + + e = first (h); + for (i = o = 0; 1; i++) + { + ASSERT (heap_offset (e) == o); + s = heap_elt_size (v, e); + + if (heap_is_free (e)) + { + uword fb, fi; + + fi = get_free_elt (v, e, &fb); + + ASSERT (fb < vec_len (h->free_lists)); + ASSERT (fi < vec_len (h->free_lists[fb])); + ASSERT (h->free_lists[fb][fi] == e - h->elts); + + ASSERT (!free_map[i]); + free_map[i] = 1; + } + + n = heap_next (e); + + if (e == n) + break; + + ASSERT (heap_prev (n) == e); + + o += s; + e = n; + } + + vec_free (free_map); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/heap.h b/src/vppinfra/heap.h new file mode 100644 index 00000000..8c1aae46 --- /dev/null +++ b/src/vppinfra/heap.h @@ -0,0 +1,357 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +/* Heaps of objects of type T (e.g. int, struct foo, ...). + + Usage. To declare a null heap: + + T * heap = 0; + + To allocate: + + offset = heap_alloc (heap, size, handle); + + New object is heap[offset] ... heap[offset + size] + Handle is used to free/query object. + + To free object: + + heap_dealloc (heap, handle); + + To query the size of an object: + + heap_size (heap, handle) + +*/ + +#ifndef included_heap_h +#define included_heap_h + +#include <vppinfra/clib.h> +#include <vppinfra/cache.h> +#include <vppinfra/hash.h> +#include <vppinfra/format.h> +#include <vppinfra/bitmap.h> + +/* Doubly linked list of elements. */ +typedef struct +{ + /* Offset of this element (plus free bit). + If element is free, data at offset contains pointer to free list. */ + u32 offset; + + /* Index of next and previous elements relative to current element. */ + i32 next, prev; +} heap_elt_t; + +/* Use high bit of offset as free bit. */ +#define HEAP_ELT_FREE_BIT (1 << 31) + +always_inline uword +heap_is_free (heap_elt_t * e) +{ + return (e->offset & HEAP_ELT_FREE_BIT) != 0; +} + +always_inline uword +heap_offset (heap_elt_t * e) +{ + return e->offset & ~HEAP_ELT_FREE_BIT; +} + +always_inline heap_elt_t * +heap_next (heap_elt_t * e) +{ + return e + e->next; +} + +always_inline heap_elt_t * +heap_prev (heap_elt_t * e) +{ + return e + e->prev; +} + +always_inline uword +heap_elt_size (void *v, heap_elt_t * e) +{ + heap_elt_t *n = heap_next (e); + uword next_offset = n != e ? heap_offset (n) : vec_len (v); + return next_offset - heap_offset (e); +} + +/* Sizes are binned. Sizes 1 to 2^log2_small_bins have their + own free lists. Larger sizes are grouped in powers of two. */ +#define HEAP_LOG2_SMALL_BINS (5) +#define HEAP_SMALL_BINS (1 << HEAP_LOG2_SMALL_BINS) +#define HEAP_N_BINS (2 * HEAP_SMALL_BINS) + +/* Header for heaps. */ +typedef struct +{ + /* Vector of used and free elements. */ + heap_elt_t *elts; + + /* For elt_bytes < sizeof (u32) we need some extra space + per elt to store free list index. */ + u32 *small_free_elt_free_index; + + /* Vector of free indices of elts array. */ + u32 *free_elts; + + /* Indices of free elts indexed by size bin. */ + u32 **free_lists; + + format_function_t *format_elt; + + /* Used for validattion/debugging. */ + uword *used_elt_bitmap; + + /* First and last element of doubly linked chain of elements. */ + u32 head, tail; + + u32 used_count, max_len; + + /* Number of bytes in a help element. */ + u32 elt_bytes; + + u32 flags; + /* Static heaps are made from external memory given to + us by user and are not re-sizeable vectors. */ +#define HEAP_IS_STATIC (1) +} heap_header_t; + +/* Start of heap elements is always cache aligned. */ +#define HEAP_DATA_ALIGN (CLIB_CACHE_LINE_BYTES) + +always_inline heap_header_t * +heap_header (void *v) +{ + return vec_header (v, sizeof (heap_header_t)); +} + +always_inline uword +heap_header_bytes () +{ + return vec_header_bytes (sizeof (heap_header_t)); +} + +always_inline void +heap_dup_header (heap_header_t * old, heap_header_t * new) +{ + uword i; + + new[0] = old[0]; + new->elts = vec_dup (new->elts); + new->free_elts = vec_dup (new->free_elts); + new->free_lists = vec_dup (new->free_lists); + for (i = 0; i < vec_len (new->free_lists); i++) + new->free_lists[i] = vec_dup (new->free_lists[i]); + new->used_elt_bitmap = clib_bitmap_dup (new->used_elt_bitmap); + new->small_free_elt_free_index = vec_dup (new->small_free_elt_free_index); +} + +/* Make a duplicate copy of a heap. */ +#define heap_dup(v) _heap_dup(v, vec_len (v) * sizeof (v[0])) + +always_inline void * +_heap_dup (void *v_old, uword v_bytes) +{ + heap_header_t *h_old, *h_new; + void *v_new; + + h_old = heap_header (v_old); + + if (!v_old) + return v_old; + + v_new = 0; + v_new = + _vec_resize (v_new, _vec_len (v_old), v_bytes, sizeof (heap_header_t), + HEAP_DATA_ALIGN); + h_new = heap_header (v_new); + heap_dup_header (h_old, h_new); + clib_memcpy (v_new, v_old, v_bytes); + return v_new; +} + +always_inline uword +heap_elts (void *v) +{ + heap_header_t *h = heap_header (v); + return h->used_count; +} + +uword heap_bytes (void *v); + +always_inline void * +_heap_new (u32 len, u32 n_elt_bytes) +{ + void *v = _vec_resize (0, len, (uword) len * n_elt_bytes, + sizeof (heap_header_t), + HEAP_DATA_ALIGN); + heap_header (v)->elt_bytes = n_elt_bytes; + return v; +} + +#define heap_new(v) (v) = _heap_new (0, sizeof ((v)[0])) + +always_inline void +heap_set_format (void *v, format_function_t * format_elt) +{ + ASSERT (v); + heap_header (v)->format_elt = format_elt; +} + +always_inline void +heap_set_max_len (void *v, uword max_len) +{ + ASSERT (v); + heap_header (v)->max_len = max_len; +} + +always_inline uword +heap_get_max_len (void *v) +{ + return v ? heap_header (v)->max_len : 0; +} + +/* Create fixed size heap with given block of memory. */ +always_inline void * +heap_create_from_memory (void *memory, uword max_len, uword elt_bytes) +{ + heap_header_t *h; + void *v; + + if (max_len * elt_bytes < sizeof (h[0])) + return 0; + + h = memory; + memset (h, 0, sizeof (h[0])); + h->max_len = max_len; + h->elt_bytes = elt_bytes; + h->flags = HEAP_IS_STATIC; + + v = (void *) (memory + heap_header_bytes ()); + _vec_len (v) = 0; + return v; +} + +/* Execute BODY for each allocated heap element. */ +#define heap_foreach(var,len,heap,body) \ +do { \ + if (vec_len (heap) > 0) \ + { \ + heap_header_t * _h = heap_header (heap); \ + heap_elt_t * _e = _h->elts + _h->head; \ + heap_elt_t * _end = _h->elts + _h->tail; \ + while (1) \ + { \ + if (! heap_is_free (_e)) \ + { \ + (var) = (heap) + heap_offset (_e); \ + (len) = heap_elt_size ((heap), _e); \ + do { body; } while (0); \ + } \ + if (_e == _end) \ + break; \ + _e = heap_next (_e); \ + } \ + } \ +} while (0) + +#define heap_elt_at_index(v,index) vec_elt_at_index(v,index) + +always_inline heap_elt_t * +heap_get_elt (void *v, uword handle) +{ + heap_header_t *h = heap_header (v); + heap_elt_t *e = vec_elt_at_index (h->elts, handle); + ASSERT (!heap_is_free (e)); + return e; +} + +#define heap_elt_with_handle(v,handle) \ +({ \ + heap_elt_t * _e = heap_get_elt ((v), (handle)); \ + (v) + heap_offset (_e); \ +}) + +always_inline uword +heap_is_free_handle (void *v, uword heap_handle) +{ + heap_header_t *h = heap_header (v); + heap_elt_t *e = vec_elt_at_index (h->elts, heap_handle); + return heap_is_free (e); +} + +extern uword heap_len (void *v, word handle); + +/* Low level allocation call. */ +extern void *_heap_alloc (void *v, uword size, uword alignment, + uword elt_bytes, uword * offset, uword * handle); + +#define heap_alloc_aligned(v,size,align,handle) \ +({ \ + uword _o, _h; \ + uword _a = (align); \ + uword _s = (size); \ + (v) = _heap_alloc ((v), _s, _a, sizeof ((v)[0]), &_o, &_h); \ + (handle) = _h; \ + _o; \ +}) + +#define heap_alloc(v,size,handle) heap_alloc_aligned((v),(size),0,(handle)) + +extern void heap_dealloc (void *v, uword handle); +extern void heap_validate (void *v); + +/* Format heap internal data structures as string. */ +extern u8 *format_heap (u8 * s, va_list * va); + +void *_heap_free (void *v); + +#define heap_free(v) (v)=_heap_free(v) + +#endif /* included_heap_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/linux/mem.c b/src/vppinfra/linux/mem.c new file mode 100644 index 00000000..2d8f593d --- /dev/null +++ b/src/vppinfra/linux/mem.c @@ -0,0 +1,266 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define _GNU_SOURCE +#include <stdlib.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <sys/mount.h> +#include <sys/mman.h> +#include <fcntl.h> +#include <linux/mempolicy.h> +#include <linux/memfd.h> + +#include <vppinfra/clib.h> +#include <vppinfra/mem.h> +#include <vppinfra/format.h> +#include <vppinfra/clib_error.h> +#include <vppinfra/linux/syscall.h> +#include <vppinfra/linux/sysfs.h> + +#ifndef F_LINUX_SPECIFIC_BASE +#define F_LINUX_SPECIFIC_BASE 1024 +#endif + +#ifndef F_ADD_SEALS +#define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9) +#define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10) + +#define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */ +#define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */ +#define F_SEAL_GROW 0x0004 /* prevent file from growing */ +#define F_SEAL_WRITE 0x0008 /* prevent writes */ +#endif + +int +clib_mem_vm_get_log2_page_size (int fd) +{ + struct stat st = { 0 }; + if (fstat (fd, &st) == -1) + return 0; + return min_log2 (st.st_blksize); +} + +clib_error_t * +clib_mem_vm_ext_alloc (clib_mem_vm_alloc_t * a) +{ + int fd = -1; + clib_error_t *err = 0; + void *addr = 0; + u8 *filename = 0; + int mmap_flags = MAP_SHARED; + int log2_page_size; + int n_pages; + int old_mpol = -1; + u64 old_mask[16] = { 0 }; + + /* save old numa mem policy if needed */ + if (a->flags & (CLIB_MEM_VM_F_NUMA_PREFER | CLIB_MEM_VM_F_NUMA_FORCE)) + { + int rv; + rv = + get_mempolicy (&old_mpol, old_mask, sizeof (old_mask) * 8 + 1, 0, 0); + + if (rv == -1) + { + if ((a->flags & CLIB_MEM_VM_F_NUMA_FORCE) != 0) + { + err = clib_error_return_unix (0, "get_mempolicy"); + goto error; + } + else + old_mpol = -1; + } + } + + /* if we are creating shared segment, we need file descriptor */ + if (a->flags & CLIB_MEM_VM_F_SHARED) + { + /* if hugepages are needed we need to create mount point */ + if (a->flags & CLIB_MEM_VM_F_HUGETLB) + { + char *mount_dir; + char template[] = "/tmp/hugepage_mount.XXXXXX"; + + mount_dir = mkdtemp (template); + if (mount_dir == 0) + return clib_error_return_unix (0, "mkdtemp \'%s\'", template); + + if (mount ("none", (char *) mount_dir, "hugetlbfs", 0, NULL)) + { + err = clib_error_return_unix (0, "mount hugetlb directory '%s'", + mount_dir); + goto error; + } + + filename = format (0, "%s/%s%c", mount_dir, a->name, 0); + + if ((fd = open ((char *) filename, O_CREAT | O_RDWR, 0755)) == -1) + { + err = clib_error_return_unix (0, "open"); + goto error; + } + umount2 ((char *) mount_dir, MNT_DETACH); + rmdir ((char *) mount_dir); + mmap_flags |= MAP_LOCKED; + } + else + { + if ((fd = memfd_create (a->name, MFD_ALLOW_SEALING)) == -1) + { + err = clib_error_return_unix (0, "memfd_create"); + goto error; + } + + if ((fcntl (fd, F_ADD_SEALS, F_SEAL_SHRINK)) == -1) + { + err = clib_error_return_unix (0, "fcntl (F_ADD_SEALS)"); + goto error; + } + } + log2_page_size = clib_mem_vm_get_log2_page_size (fd); + + if (log2_page_size == 0) + { + err = clib_error_return_unix (0, "cannot determine page size"); + goto error; + } + } + else /* not CLIB_MEM_VM_F_SHARED */ + { + if (a->flags & CLIB_MEM_VM_F_HUGETLB) + { + mmap_flags |= MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS; + log2_page_size = 21; + } + else + { + mmap_flags |= MAP_PRIVATE | MAP_ANONYMOUS; + log2_page_size = min_log2 (sysconf (_SC_PAGESIZE)); + } + } + + n_pages = ((a->size - 1) >> log2_page_size) + 1; + + + if (a->flags & CLIB_MEM_VM_F_HUGETLB_PREALLOC) + { + err = clib_sysfs_prealloc_hugepages (a->numa_node, + 1 << (log2_page_size - 10), + n_pages); + if (err) + goto error; + + } + + if (fd != -1) + if ((ftruncate (fd, a->size)) == -1) + { + err = clib_error_return_unix (0, "ftruncate"); + goto error; + } + + if (old_mpol != -1) + { + int rv; + u64 mask[16] = { 0 }; + mask[0] = 1 << a->numa_node; + rv = set_mempolicy (MPOL_BIND, mask, sizeof (mask) * 8 + 1); + if (rv) + { + err = clib_error_return_unix (0, "set_mempolicy"); + goto error; + } + } + + addr = mmap (0, a->size, (PROT_READ | PROT_WRITE), mmap_flags, fd, 0); + if (addr == MAP_FAILED) + { + err = clib_error_return_unix (0, "mmap"); + goto error; + } + + /* re-apply ole numa memory policy */ + if (old_mpol != -1 && + set_mempolicy (old_mpol, old_mask, sizeof (old_mask) * 8 + 1) == -1) + { + err = clib_error_return_unix (0, "set_mempolicy"); + goto error; + } + + a->log2_page_size = log2_page_size; + a->n_pages = n_pages; + a->addr = addr; + a->fd = fd; + goto done; + +error: + if (fd != -1) + close (fd); + +done: + vec_free (filename); + return err; +} + +u64 * +clib_mem_vm_get_paddr (void *mem, int log2_page_size, int n_pages) +{ + int pagesize = sysconf (_SC_PAGESIZE); + int fd; + int i; + u64 *r = 0; + + if ((fd = open ((char *) "/proc/self/pagemap", O_RDONLY)) == -1) + return 0; + + for (i = 0; i < n_pages; i++) + { + u64 seek, pagemap = 0; + uword vaddr = pointer_to_uword (mem) + (((u64) i) << log2_page_size); + seek = ((u64) vaddr / pagesize) * sizeof (u64); + if (lseek (fd, seek, SEEK_SET) != seek) + goto done; + + if (read (fd, &pagemap, sizeof (pagemap)) != (sizeof (pagemap))) + goto done; + + if ((pagemap & (1ULL << 63)) == 0) + goto done; + + pagemap &= pow2_mask (55); + vec_add1 (r, pagemap * pagesize); + } + +done: + close (fd); + if (vec_len (r) != n_pages) + { + vec_free (r); + return 0; + } + return r; +} + + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/linux/syscall.h b/src/vppinfra/linux/syscall.h new file mode 100644 index 00000000..f8ec5919 --- /dev/null +++ b/src/vppinfra/linux/syscall.h @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef included_linux_syscall_h +#define included_linux_syscall_h + +#include <unistd.h> +#include <sys/syscall.h> + +static inline long +set_mempolicy (int mode, const unsigned long *nodemask, unsigned long maxnode) +{ + return syscall (__NR_set_mempolicy, mode, nodemask, maxnode); +} + +static inline int +get_mempolicy (int *mode, unsigned long *nodemask, unsigned long maxnode, + void *addr, unsigned long flags) +{ + return syscall (__NR_get_mempolicy, mode, nodemask, maxnode, addr, flags); +} + +static inline long +move_pages (int pid, unsigned long count, void **pages, const int *nodes, + int *status, int flags) +{ + return syscall (__NR_move_pages, pid, count, pages, nodes, status, flags); +} + +static inline int +memfd_create (const char *name, unsigned int flags) +{ + return syscall (__NR_memfd_create, name, flags); +} + +#endif /* included_linux_syscall_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/linux/sysfs.c b/src/vppinfra/linux/sysfs.c new file mode 100644 index 00000000..5f611e6a --- /dev/null +++ b/src/vppinfra/linux/sysfs.c @@ -0,0 +1,250 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vppinfra/clib.h> +#include <vppinfra/clib_error.h> +#include <vppinfra/format.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <dirent.h> + +clib_error_t * +clib_sysfs_write (char *file_name, char *fmt, ...) +{ + u8 *s; + int fd; + clib_error_t *error = 0; + + fd = open (file_name, O_WRONLY); + if (fd < 0) + return clib_error_return_unix (0, "open `%s'", file_name); + + va_list va; + va_start (va, fmt); + s = va_format (0, fmt, &va); + va_end (va); + + if (write (fd, s, vec_len (s)) < 0) + error = clib_error_return_unix (0, "write `%s'", file_name); + + vec_free (s); + close (fd); + return error; +} + +clib_error_t * +clib_sysfs_read (char *file_name, char *fmt, ...) +{ + unformat_input_t input; + u8 *s = 0; + int fd; + ssize_t sz; + uword result; + + fd = open (file_name, O_RDONLY); + if (fd < 0) + return clib_error_return_unix (0, "open `%s'", file_name); + + vec_validate (s, 4095); + + sz = read (fd, s, vec_len (s)); + if (sz < 0) + { + close (fd); + vec_free (s); + return clib_error_return_unix (0, "read `%s'", file_name); + } + + _vec_len (s) = sz; + unformat_init_vector (&input, s); + + va_list va; + va_start (va, fmt); + result = va_unformat (&input, fmt, &va); + va_end (va); + + vec_free (s); + close (fd); + + if (result == 0) + return clib_error_return (0, "unformat error"); + + return 0; +} + +u8 * +clib_sysfs_link_to_name (char *link) +{ + char *p, buffer[64]; + unformat_input_t in; + u8 *s = 0; + int r; + + r = readlink (link, buffer, sizeof (buffer) - 1); + + if (r < 0) + return 0; + + buffer[r] = 0; + p = strrchr (buffer, '/'); + + if (!p) + return 0; + + unformat_init_string (&in, p + 1, strlen (p + 1)); + if (unformat (&in, "%s", &s) != 1) + clib_unix_warning ("no string?"); + unformat_free (&in); + + return s; +} + +clib_error_t * +clib_sysfs_set_nr_hugepages (int numa_node, int page_size, int nr) +{ + clib_error_t *error = 0; + struct stat sb; + u8 *p = 0; + + p = format (p, "/sys/devices/system/node/node%u%c", numa_node, 0); + + if (stat ((char *) p, &sb) == 0) + { + if (S_ISDIR (sb.st_mode) == 0) + { + error = clib_error_return (0, "'%s' is not directory", p); + goto done; + } + } + else if (numa_node == 0) + { + vec_reset_length (p); + p = format (p, "/sys/kernel/mm%c", 0); + if (stat ((char *) p, &sb) < 0 || S_ISDIR (sb.st_mode) == 0) + { + error = clib_error_return (0, "'%s' does not exist or it is not " + "directory", p); + goto done; + } + } + else + { + error = clib_error_return (0, "'%s' does not exist", p); + goto done; + } + + _vec_len (p) -= 1; + p = format (p, "/hugepages/hugepages-%ukB/nr_hugepages%c", page_size, 0); + clib_sysfs_write ((char *) p, "%d", nr); + +done: + vec_free (p); + return error; +} + + +static clib_error_t * +clib_sysfs_get_xxx_hugepages (char *type, int numa_node, + int page_size, int *val) +{ + clib_error_t *error = 0; + struct stat sb; + u8 *p = 0; + + p = format (p, "/sys/devices/system/node/node%u%c", numa_node, 0); + + if (stat ((char *) p, &sb) == 0) + { + if (S_ISDIR (sb.st_mode) == 0) + { + error = clib_error_return (0, "'%s' is not directory", p); + goto done; + } + } + else if (numa_node == 0) + { + vec_reset_length (p); + p = format (p, "/sys/kernel/mm%c", 0); + if (stat ((char *) p, &sb) < 0 || S_ISDIR (sb.st_mode) == 0) + { + error = clib_error_return (0, "'%s' does not exist or it is not " + "directory", p); + goto done; + } + } + else + { + error = clib_error_return (0, "'%s' does not exist", p); + goto done; + } + + _vec_len (p) -= 1; + p = format (p, "/hugepages/hugepages-%ukB/%s_hugepages%c", page_size, + type, 0); + error = clib_sysfs_read ((char *) p, "%d", val); + +done: + vec_free (p); + return error; +} + +clib_error_t * +clib_sysfs_get_free_hugepages (int numa_node, int page_size, int *v) +{ + return clib_sysfs_get_xxx_hugepages ("free", numa_node, page_size, v); +} + +clib_error_t * +clib_sysfs_get_nr_hugepages (int numa_node, int page_size, int *v) +{ + return clib_sysfs_get_xxx_hugepages ("nr", numa_node, page_size, v); +} + +clib_error_t * +clib_sysfs_get_surplus_hugepages (int numa_node, int page_size, int *v) +{ + return clib_sysfs_get_xxx_hugepages ("surplus", numa_node, page_size, v); +} + +clib_error_t * +clib_sysfs_prealloc_hugepages (int numa_node, int page_size, int nr) +{ + clib_error_t *error = 0; + int n, needed; + error = clib_sysfs_get_free_hugepages (numa_node, page_size, &n); + if (error) + return error; + needed = nr - n; + if (needed <= 0) + return 0; + + error = clib_sysfs_get_nr_hugepages (numa_node, page_size, &n); + if (error) + return error; + clib_warning ("pre-allocating %u additional %uK hugepages on numa node %u", + needed, page_size, numa_node); + return clib_sysfs_set_nr_hugepages (numa_node, page_size, n + needed); +} + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/linux/sysfs.h b/src/vppinfra/linux/sysfs.h new file mode 100644 index 00000000..6c80cf95 --- /dev/null +++ b/src/vppinfra/linux/sysfs.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef included_linux_sysfs_h +#define included_linux_sysfs_h + +#include <vppinfra/error.h> + +clib_error_t *clib_sysfs_write (char *file_name, char *fmt, ...); + +clib_error_t *clib_sysfs_read (char *file_name, char *fmt, ...); + +u8 *clib_sysfs_link_to_name (char *link); + +clib_error_t *clib_sysfs_set_nr_hugepages (int numa_node, + int page_size, int nr); +clib_error_t *clib_sysfs_get_nr_hugepages (int numa_node, + int page_size, int *v); +clib_error_t *clib_sysfs_get_free_hugepages (int numa_node, + int page_size, int *v); +clib_error_t *clib_sysfs_get_surplus_hugepages (int numa_node, + int page_size, int *v); +clib_error_t *clib_sysfs_prealloc_hugepages (int numa_node, + int page_size, int nr); + +#endif /* included_linux_sysfs_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/lock.h b/src/vppinfra/lock.h new file mode 100644 index 00000000..7d241675 --- /dev/null +++ b/src/vppinfra/lock.h @@ -0,0 +1,99 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef included_clib_lock_h +#define included_clib_lock_h + +#include <vppinfra/clib.h> + +typedef struct +{ + CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); + u32 lock; +#if CLIB_DEBUG > 0 + pid_t pid; + uword thread_index; + void *frame_address; +#endif +} *clib_spinlock_t; + +static inline void +clib_spinlock_init (clib_spinlock_t * p) +{ + *p = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES); + memset ((void *) *p, 0, CLIB_CACHE_LINE_BYTES); +} + +static inline void +clib_spinlock_free (clib_spinlock_t * p) +{ + if (*p) + { + clib_mem_free ((void *) *p); + *p = 0; + } +} + +static_always_inline void +clib_spinlock_lock (clib_spinlock_t * p) +{ + while (__sync_lock_test_and_set (&(*p)->lock, 1)) +#if __x86_64__ + __builtin_ia32_pause () +#endif + ; +#if CLIB_DEBUG > 0 + (*p)->frame_address = __builtin_frame_address (0); + (*p)->pid = getpid (); + (*p)->thread_index = os_get_thread_index (); +#endif +} + +static_always_inline void +clib_spinlock_lock_if_init (clib_spinlock_t * p) +{ + if (PREDICT_FALSE (*p != 0)) + clib_spinlock_lock (p); +} + +static_always_inline void +clib_spinlock_unlock (clib_spinlock_t * p) +{ +#if CLIB_DEBUG > 0 + (*p)->frame_address = 0; + (*p)->pid = 0; + (*p)->thread_index = 0; +#endif + /* Make sure all writes are complete before releasing the lock */ + CLIB_MEMORY_BARRIER (); + (*p)->lock = 0; +} + +static_always_inline void +clib_spinlock_unlock_if_init (clib_spinlock_t * p) +{ + if (PREDICT_FALSE (*p != 0)) + clib_spinlock_unlock (p); +} + +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/longjmp.S b/src/vppinfra/longjmp.S new file mode 100644 index 00000000..d4dd4c7d --- /dev/null +++ b/src/vppinfra/longjmp.S @@ -0,0 +1,690 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#if defined(__x86_64__) + .global clib_setjmp + .align 4 + .type clib_setjmp, @function +clib_setjmp: + movq %rbx, 8*0(%rdi) + movq %rbp, 8*1(%rdi) + movq %r12, 8*2(%rdi) + movq %r13, 8*3(%rdi) + movq %r14, 8*4(%rdi) + movq %r15, 8*5(%rdi) + + /* Save SP after return. */ + leaq 8(%rsp), %rdx + movq %rdx, 8*6(%rdi) + + /* Save PC we are returning to from stack frame. */ + movq 0(%rsp), %rax + movq %rax, 8*7(%rdi) + + /* Give back user's return value. */ + movq %rsi, %rax + ret + + .global clib_longjmp + .align 4 + .type clib_longjmp, @function +clib_longjmp: + /* Restore regs. */ + movq 8*0(%rdi), %rbx + movq 8*1(%rdi), %rbp + movq 8*2(%rdi), %r12 + movq 8*3(%rdi), %r13 + movq 8*4(%rdi), %r14 + movq 8*5(%rdi), %r15 + movq 8*6(%rdi), %rsp + movq 8*7(%rdi), %rdx + + /* Give back user's return value. */ + movq %rsi, %rax + + /* Away we go. */ + jmpq *%rdx + + .global clib_calljmp + .align 4 + .type clib_calljmp, @function +clib_calljmp: + /* Make sure stack is 16-byte aligned. */ + movq %rdx, %rax + andq $0xf, %rax + subq %rax, %rdx + + /* Get return address. */ + pop %rax + + /* Switch to new stack. */ + xchgq %rsp, %rdx + + /* Save return address on new stack. */ + push %rax + + /* Save old stack pointer on new stack. */ + push %rdx + + /* Get function. */ + movq %rdi, %rdx + + /* Move argument into place. */ + movq %rsi, %rdi + + /* Away we go. */ + callq *%rdx + + /* Switch back to old stack. */ + movq 8(%rsp), %rdx + movq 0(%rsp), %rcx + xchgq %rcx, %rsp + + /* Return to caller. */ + jmpq *%rdx + +#elif defined(i386) + .global clib_setjmp + .align 4 + .type clib_setjmp, @function +clib_setjmp: + movl 4(%esp), %ecx + + movl %ebp, 4*0(%ecx) + movl %ebx, 4*1(%ecx) + movl %edi, 4*2(%ecx) + movl %esi, 4*3(%ecx) + + /* Save SP after return. */ + leal 4(%esp), %edx + movl %edx, 4*4(%ecx) + + /* Save PC we are returning to from stack frame. */ + movl 0(%esp), %eax + movl %eax, 4*5(%ecx) + + /* Give back user's return value. */ + movl 8(%esp), %eax + ret + + .global clib_longjmp + .align 4 + .type clib_longjmp, @function +clib_longjmp: + movl 4(%esp), %ecx + + /* Give back user's return value. */ + movl 8(%esp), %eax + + /* Restore regs. */ + movl 4*0(%ecx), %ebp + movl 4*1(%ecx), %ebx + movl 4*2(%ecx), %edi + movl 4*3(%ecx), %esi + movl 4*4(%ecx), %esp + movl 4*5(%ecx), %edx + + /* Away we go. */ + jmp *%edx + + .global clib_calljmp + .align 4 + .type clib_calljmp, @function +clib_calljmp: + /* Get new stack pointer. */ + movl 12(%esp), %edx + + /* Switch stacks. */ + xchgl %esp, %edx + + /* Save old stack pointer on new stack. */ + sub $8, %esp + movl %edx, 4(%esp) + + /* Put function argument in stack frame. */ + movl 8(%edx), %eax + movl %eax, 0(%esp) + + /* Get function. */ + movl 4(%edx), %eax + + /* Away we go. */ + call *%eax + + /* Switch back to old stack. */ + movl 4(%esp), %edx + xchgl %edx, %esp + + /* Return to caller. */ + ret + +#elif defined(__SPU__) + +#elif defined(__powerpc64__) + + .text + +#define _prologue(n) \ + .align 2 ; \ + .globl n, .##n ; \ + .section ".opd", "aw" ; \ + .align 3 ; \ +n: .quad .##n, .TOC.@tocbase, 0 ; \ + .previous ; \ + .size n, 24 ; \ + .type .##n, @function ; \ +.##n: + +#define _foreach_14_31 \ +_ (14, 0) _ (15, 1) _ (16, 2) _ (17, 3) _ (18, 4) _ (19, 5) \ +_ (20, 6) _ (21, 7) _ (22, 8) _ (23, 9) _ (24, 10) _ (25, 11) \ +_ (26, 12) _ (27, 13) _ (28, 14) _ (29, 15) _ (30, 16) _ (31, 17) + +#define _foreach_20_31 \ +_ (20, 0) _ (21, 1) _ (22, 2) _ (23, 3) _ (24, 4) _ (25, 5) \ +_ (26, 6) _ (27, 7) _ (28, 8) _ (29, 9) _ (30, 10) _ (31, 11) + +#ifdef __ALTIVEC__ +#define CLIB_POWERPC_ALTIVEC_N_REGS 12 +#else +#define CLIB_POWERPC_ALTIVEC_N_REGS 0 +#endif + +_prologue (clib_setjmp) + mflr 0 + std 0, 8*0(3) + std 1, 8*1(3) + std 2, 8*2(3) + mfcr 0 + std 0, 8*3(3) + mfspr 0, 256 + stw 0, 8*4(3) + + /* gprs 14 - 31 */ +#define _(a,b) std a, 8*((b) + 4 + 18*0)(3) ; + _foreach_14_31 +#undef _ + + /* fprs 14 - 31 */ +#define _(a,b) stfd a, 8*((b) + 4 + 18*1)(3) ; + _foreach_14_31 +#undef _ + +#if CLIB_POWERPC_ALTIVEC_N_REGS > 0 + /* vrs 20 - 31 */ + li 5, 8*(4 + 18*2) +#define _(a,b) stvx a, 5, 3 ; addi 5, 5, 16 ; + _foreach_20_31 +#undef _ +#endif /* CLIB_POWERPC_ALTIVEC_N_REGS > 0 */ + + /* Return value. */ + mr 3, 4 + + blr + +_prologue (clib_longjmp) + ld 0, 8*0(3) + mtlr 0 + ld 1, 8*1(3) + ld 2, 8*2(3) + ld 0, 8*3(3) + mtcrf 0xff, 0 + lwz 0, 8*3(3) + mtspr 256, 0 + + /* gprs 14 - 31 */ +#define _(a,b) ld a, 8*((b) + 4 + 18*0)(3) ; + _foreach_14_31 +#undef _ + + /* fprs 14 - 31 */ +#define _(a,b) lfd a, 8*((b) + 4 + 18*1)(3) ; + _foreach_14_31 +#undef _ + +#if CLIB_POWERPC_ALTIVEC_N_REGS > 0 + /* vrs 20 - 31 */ + li 5, 8*(4 + 18*2) +#define _(a,b) lvx a, 5, 3 ; addi 5, 5, 16 ; + _foreach_20_31 +#undef _ +#endif /* CLIB_POWERPC_ALTIVEC_N_REGS > 0 */ + + /* Return value. */ + mr 3, 4 + + blr + + .globl clib_calljmp + .section ".opd","aw" + .align 3 +clib_calljmp: + .quad .L.clib_calljmp,.TOC.@tocbase,0 + .previous + .type clib_calljmp, @function +.L.clib_calljmp: + mflr 0 + mr 9,3 + std 0,16(1) + stdu 1,-112(1) +#APP + std 1,-8(5) + addi 5,5,-256 + mr 1,5 +#NO_APP + ld 10,0(9) + std 2,40(1) + mr 3,4 + mtctr 10 + ld 11,16(9) + ld 2,8(9) + bctrl + ld 2,40(1) +#APP + addi 1,1,256 + ld 1,-8(1) +#NO_APP + addi 1,1,112 + ld 0,16(1) + mtlr 0 + blr + .long 0 + .byte 0,0,0,1,128,0,0,0 + .size clib_calljmp,.-.L.clib_calljmp + +#elif defined(__powerpc__) + +#define _foreach_14_31 \ +_ (14, 0) _ (15, 1) _ (16, 2) _ (17, 3) _ (18, 4) _ (19, 5) \ +_ (20, 6) _ (21, 7) _ (22, 8) _ (23, 9) _ (24, 10) _ (25, 11) \ +_ (26, 12) _ (27, 13) _ (28, 14) _ (29, 15) _ (30, 16) _ (31, 17) + +#define _foreach_20_31 \ +_ (20, 0) _ (21, 1) _ (22, 2) _ (23, 3) _ (24, 4) _ (25, 5) \ +_ (26, 6) _ (27, 7) _ (28, 8) _ (29, 9) _ (30, 10) _ (31, 11) + +#ifdef __ALTIVEC__ +#define CLIB_POWERPC_ALTIVEC_N_REGS 12 +#else +#define CLIB_POWERPC_ALTIVEC_N_REGS 0 +#endif + + .global clib_setjmp + .align 4 + .type clib_setjmp, @function +clib_setjmp: + mflr 0 + stw 0, 4*0(3) + stw 1, 4*1(3) + mfcr 0 + stw 0, 4*2(3) +#if CLIB_POWERPC_ALTIVEC_N_REGS > 0 + mfspr 0, 256 +#endif + stw 0, 4*3(3) + +#if CLIB_POWERPC_ALTIVEC_N_REGS > 0 + li 5, 4*4 +#define _(a,b) stvx a, 3, 5 ; addi 5, 5, 16 ; + _foreach_20_31 +#undef _ +#endif /* CLIB_POWERPC_ALTIVEC_N_REGS > 0 */ + + /* gp 14 - 31 */ +#define _(a,b) stw a, 4*(1*(b) + 4 + 4*CLIB_POWERPC_ALTIVEC_N_REGS + 0*18)(3) ; + _foreach_14_31 +#undef _ + + /* fp 14 - 31 */ +#define _(a,b) stfd a, 4*(2*(b) + 4 + 4*CLIB_POWERPC_ALTIVEC_N_REGS + 1*18)(3) ; + _foreach_14_31 +#undef _ + + /* Return value. */ + mr 3, 4 + + blr + + .global clib_longjmp + .align 4 + .type clib_longjmp, @function +clib_longjmp: + + lwz 0, 4*0(3) + mtlr 0 + lwz 1, 4*1(3) + lwz 0, 4*2(3) + mtcr 0 + lwz 0, 4*3(3) +#if CLIB_POWERPC_ALTIVEC_N_REGS > 0 + mtspr 256, 0 +#endif + +#if CLIB_POWERPC_ALTIVEC_N_REGS > 0 + li 5, 4*4 +#define _(a,b) lvx a, 3, 5 ; addi 5, 5, 16 ; + _foreach_20_31 +#undef _ +#endif /* CLIB_POWERPC_ALTIVEC_N_REGS > 0 */ + + /* gp 14 - 31 */ +#define _(a,b) lwz a, 4*(1*(b) + 4 + 4*CLIB_POWERPC_ALTIVEC_N_REGS + 0*18)(3) ; + _foreach_14_31 +#undef _ + + /* fp 14 - 31 */ +#define _(a,b) lfd a, 4*(2*(b) + 4 + 4*CLIB_POWERPC_ALTIVEC_N_REGS + 1*18)(3) ; + _foreach_14_31 +#undef _ + + /* Return value. */ + mr 3, 4 + + blr + + .global clib_calljmp + .align 4 + .type clib_calljmp, @function +clib_calljmp: + /* Make sure stack is 16 byte aligned. */ + andi. 0, 5, 0xf + sub 5, 5, 0 + addi 5, 5, -16 + + /* Save old stack/link pointer on new stack. */ + stw 1, 0(5) + mflr 0 + stw 0, 4(5) + + /* account for (sp, lr) tuple, and keep aligned */ + addi 5, 5, -16 + + /* Switch stacks. */ + mr 1, 5 + + /* Move argument into place. */ + mtctr 3 + mr 3, 4 + + /* Away we go. */ + bctrl + + /* back to our synthetic frame */ + addi 1,1,16 + + /* Switch back to old stack. */ + lwz 0, 4(1) + mtlr 0 + lwz 0, 0(1) + mr 1, 0 + + /* Return to caller. */ + blr + +#elif defined(__arm__) + + .global clib_setjmp + .align 4 + .type clib_setjmp, %function +clib_setjmp: + mov ip, r0 /* jmp buffer */ + + /* Save integer registers */ + stmia ip!, {v1-v6, sl, fp, sp, lr} + +#ifdef __IWMMXT__ + /* Save the call-preserved iWMMXt registers. */ + wstrd wr10, [ip], #8 + wstrd wr11, [ip], #8 + wstrd wr12, [ip], #8 + wstrd wr13, [ip], #8 + wstrd wr14, [ip], #8 + wstrd wr15, [ip], #8 +#endif + + /* Give back user's return value. */ + mov r0, r1 + bx lr + + .global clib_longjmp + .align 4 + .type clib_longjmp, %function +clib_longjmp: + mov ip, r0 /* jmp buffer */ + + /* Restore integer registers. */ + ldmia ip!, {v1-v6, sl, fp, sp, lr} + +#ifdef __IWMMXT__ + /* Save the call-preserved iWMMXt registers. */ + wldrd wr10, [ip], #8 + wldrd wr11, [ip], #8 + wldrd wr12, [ip], #8 + wldrd wr13, [ip], #8 + wldrd wr14, [ip], #8 + wldrd wr15, [ip], #8 +#endif + + /* Give back user's return value. */ + mov r0, r1 + bx lr + + .global clib_calljmp + .align 4 + .type clib_calljmp, %function +clib_calljmp: + /* Make sure stack is 8 byte aligned. */ + bic r2, r2, #7 + + /* Allocate space for stack/link pointer on new stack. */ + sub r2, r2, #8 + + /* Save old stack/link pointer on new stack. */ + str sp, [r2, #0] + str lr, [r2, #4] + + /* Switch stacks. */ + mov sp, r2 + + /* Save function to call. */ + mov ip, r0 + + /* Move argument into place. */ + mov r0, r1 + + /* Away we go. */ + bx ip + + /* Switch back to old stack. */ + ldr lr, [sp, #4] + ldr ip, [sp, #0] + mov sp, ip + + /* Return to caller. */ + bx lr + +#elif defined(__xtensa__) + + /* FIXME implement if needed. */ + .global clib_setjmp + .align 4 + .type clib_setjmp, %function +clib_setjmp: +1: j 1b + + .global clib_longjmp + .align 4 + .type clib_longjmp, @function +clib_longjmp: +1: j 1b + + .global clib_calljmp + .align 4 + .type clib_calljmp, %function +clib_calljmp: +1: j 1b + +#elif defined(__TMS320C6X__) + + /* FIXME implement if needed. */ + .global clib_setjmp + .align 4 + .type clib_setjmp, %function +clib_setjmp: +1: B .S1 1b + + .global clib_longjmp + .align 4 + .type clib_longjmp, @function +clib_longjmp: +1: B .S1 1b + + .global clib_calljmp + .align 4 + .type clib_calljmp, %function +clib_calljmp: +1: B .S1 1b + +#elif defined (__aarch64__) +/* + Copyright (c) 2011, 2012 ARM Ltd + All rights reserved. + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + 3. The name of the company may not be used to endorse or promote + products derived from this software without specific prior written + permission. + THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#define GPR_LAYOUT \ + REG_PAIR (x19, x20, 0); \ + REG_PAIR (x21, x22, 16); \ + REG_PAIR (x23, x24, 32); \ + REG_PAIR (x25, x26, 48); \ + REG_PAIR (x27, x28, 64); \ + REG_PAIR (x29, x30, 80); \ + REG_ONE (x16, 96) +#define FPR_LAYOUT \ + REG_PAIR ( d8, d9, 112); \ + REG_PAIR (d10, d11, 128); \ + REG_PAIR (d12, d13, 144); \ + REG_PAIR (d14, d15, 160); +// int clib_setjmp (jmp_buf) + .global clib_setjmp + .type clib_setjmp, %function +clib_setjmp: + mov x16, sp +#define REG_PAIR(REG1, REG2, OFFS) stp REG1, REG2, [x0, OFFS] +#define REG_ONE(REG1, OFFS) str REG1, [x0, OFFS] + GPR_LAYOUT + FPR_LAYOUT +#undef REG_PAIR +#undef REG_ONE + mov x0, x1 + ret + .size clib_setjmp, .-clib_setjmp +// void clib_longjmp (jmp_buf, int) __attribute__ ((noreturn)) + .global clib_longjmp + .type clib_longjmp, %function +clib_longjmp: +#define REG_PAIR(REG1, REG2, OFFS) ldp REG1, REG2, [x0, OFFS] +#define REG_ONE(REG1, OFFS) ldr REG1, [x0, OFFS] + GPR_LAYOUT + FPR_LAYOUT +#undef REG_PAIR +#undef REG_ONE + mov sp, x16 + mov x0, x1 + // cmp w1, #0 + // cinc w0, w1, eq + // use br not ret, as ret is guaranteed to mispredict + br x30 + .size clib_longjmp, .-clib_longjmp + + +// void clib_calljmp (x0=function, x1=arg, x2=new_stack) + .global clib_calljmp + .type clib_calljmp, %function +clib_calljmp: + // save fn ptr + mov x3, x0 + // set up fn arg + mov x0, x1 + // switch stacks + mov x4, sp + + // space for saved sp, lr on new stack + sub x2, x2, #16 + mov sp, x2 + + // save old sp and link register on new stack + str x4, [sp] + str x30,[sp,#8] + mov x4, sp + + // go there + blr x3 + + // restore old sp and link register + mov x4, sp + + ldr x3, [x4] + ldr x30,[x4, #8] + mov sp, x3 + ret + .size clib_calljmp, .-clib_calljmp +#else +#error "unknown machine" +#endif + +.section .note.GNU-stack,"",%progbits diff --git a/src/vppinfra/longjmp.h b/src/vppinfra/longjmp.h new file mode 100644 index 00000000..8d83203e --- /dev/null +++ b/src/vppinfra/longjmp.h @@ -0,0 +1,124 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_longjmp_h +#define included_clib_longjmp_h + +#include <vppinfra/types.h> + +#if defined(__x86_64__) +/* rbx, rbp, r12, r13, r14, r15, eip, rsp */ +#define CLIB_ARCH_LONGJMP_REGS 8 + +#elif defined(i386) +/* ebx, ebp, esi, edi, eip, rsp */ +#define CLIB_ARCH_LONGJMP_REGS 6 + +#elif (defined(__powerpc64__) || defined(__powerpc__)) + +#ifdef __ALTIVEC__ +#define CLIB_POWERPC_ALTIVEC_N_REGS 12 +#else +#define CLIB_POWERPC_ALTIVEC_N_REGS 0 +#endif + +/* r1 r2 link condition+vsave regs 14-31 fp regs 14-31 vector regs 20-31 */ +#define CLIB_ARCH_LONGJMP_REGS \ + (/* r1 lr cr vrsave */ \ + 4 \ + /* gp */ \ + + (31 - 14 + 1) \ + /* fp */ \ + + (sizeof (f64) / sizeof (uword)) * (31 - 14 + 1) \ + /* vector regs */ \ + + (16 / sizeof (uword)) * CLIB_POWERPC_ALTIVEC_N_REGS) + +#elif defined(__SPU__) +/* FIXME */ +#define CLIB_ARCH_LONGJMP_REGS (10) + +#elif defined(__arm__) + +#ifndef __IWMMXT__ +/* v1-v6 sl fp sp lr */ +#define CLIB_ARCH_LONGJMP_REGS (10) +#else +/* For iwmmxt we save 6 extra 8 byte registers. */ +#define CLIB_ARCH_LONGJMP_REGS (10 + (6*2)) +#endif + +#elif defined(__xtensa__) + +/* setjmp/longjmp not supported for the moment. */ +#define CLIB_ARCH_LONGJMP_REGS 0 + +#elif defined(__TMS320C6X__) + +/* setjmp/longjmp not supported for the moment. */ +#define CLIB_ARCH_LONGJMP_REGS 0 + +#elif defined(__aarch64__) +#define CLIB_ARCH_LONGJMP_REGS (22) +#else +#error "unknown machine" +#endif + +typedef struct +{ + uword regs[CLIB_ARCH_LONGJMP_REGS]; +} clib_longjmp_t __attribute__ ((aligned (16))); + +/* Return given value to saved context. */ +void clib_longjmp (clib_longjmp_t * save, uword return_value); + +/* Save context. Returns given value if jump is not taken; + otherwise returns value from clib_longjmp if long jump is taken. */ +uword clib_setjmp (clib_longjmp_t * save, uword return_value_not_taken); + +/* Call function on given stack. */ +uword clib_calljmp (uword (*func) (uword func_arg), + uword func_arg, void *stack); + +#endif /* included_clib_longjmp_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/macros.c b/src/vppinfra/macros.c new file mode 100644 index 00000000..ce4cc9bc --- /dev/null +++ b/src/vppinfra/macros.c @@ -0,0 +1,266 @@ +/* + macros.c - a simple macro expander + + Copyright (c) 2010, 2014 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#include <vppinfra/macros.h> + +static inline int +macro_isalnum (i8 c) +{ + if ((c >= 'A' && c <= 'Z') + || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || (c == '_')) + return 1; + return 0; +} + +static i8 * +builtin_eval (macro_main_t * mm, i8 * varname, i32 complain) +{ + uword *p; + i8 *(*fp) (macro_main_t *, i32); + + p = hash_get_mem (mm->the_builtin_eval_hash, varname); + if (p == 0) + return 0; + fp = (void *) (p[0]); + return (*fp) (mm, complain); +} + +int +clib_macro_unset (macro_main_t * mm, char *name) +{ + hash_pair_t *p; + u8 *key, *value; + + p = hash_get_pair (mm->the_value_table_hash, name); + + if (p == 0) + return 1; + + key = (u8 *) (p->key); + value = (u8 *) (p->value[0]); + hash_unset_mem (mm->the_value_table_hash, name); + + vec_free (value); + vec_free (key); + return 0; +} + +int +clib_macro_set_value (macro_main_t * mm, char *name, char *value) +{ + u8 *key_copy, *value_copy; + int rv; + + rv = clib_macro_unset (mm, name); + + key_copy = format (0, "%s%c", name, 0); + value_copy = format (0, "%s%c", value, 0); + + hash_set_mem (mm->the_value_table_hash, key_copy, value_copy); + return rv; +} + +i8 * +clib_macro_get_value (macro_main_t * mm, char *name) +{ + uword *p; + + p = hash_get_mem (mm->the_value_table_hash, name); + if (p) + return (i8 *) (p[0]); + else + return 0; +} + +/* + * eval: takes a string, returns a vector. + * looks up $foobar in the variable table. + */ +i8 * +clib_macro_eval (macro_main_t * mm, i8 * s, i32 complain) +{ + i8 *rv = 0; + i8 *varname, *varvalue; + i8 *ts; + + while (*s) + { + switch (*s) + { + case '\\': + s++; + /* fallthrough */ + + default: + vec_add1 (rv, *s); + s++; + break; + + case '$': + s++; + varname = 0; + /* + * Make vector with variable name in it. + */ + while (*s && (macro_isalnum (*s) || (*s == '_') || (*s == '('))) + { + + /* handle $(foo) */ + if (*s == '(') + { + s++; /* skip '(' */ + while (*s && *s != ')') + { + vec_add1 (varname, *s); + s++; + } + if (*s) + s++; /* skip ')' */ + break; + } + vec_add1 (varname, *s); + s++; + } + /* null terminate */ + vec_add1 (varname, 0); + /* Look for a builtin, e.g. $my_hostname */ + if (!(varvalue = builtin_eval (mm, varname, complain))) + { + /* Look in value table */ + if (!varvalue) + { + char *tmp = clib_macro_get_value (mm, varname); + if (tmp) + varvalue = (i8 *) format (0, "%s%c", tmp, 0); + } +#ifdef CLIB_UNIX + /* Look in environment. */ + if (!varvalue) + { + char *tmp = getenv (varname); + if (tmp) + varvalue = (i8 *) format (0, "%s%c", tmp, 0); + } +#endif /* CLIB_UNIX */ + } + if (varvalue) + { + /* recursively evaluate */ + ts = clib_macro_eval (mm, varvalue, complain); + vec_free (varvalue); + /* add results to answer */ + vec_append (rv, ts); + /* Remove NULL termination or the results are sad */ + _vec_len (rv) = vec_len (rv) - 1; + vec_free (ts); + } + else + { + if (complain) + clib_warning ("Undefined Variable Reference: %s\n", varname); + vec_append (rv, format (0, "UNSET ")); + _vec_len (rv) = vec_len (rv) - 1; + + } + vec_free (varname); + } + } + vec_add1 (rv, 0); + return (rv); +} + +/* + * eval: takes a string, returns a vector. + * looks up $foobar in the variable table. + */ +i8 * +clib_macro_eval_dollar (macro_main_t * mm, i8 * s, i32 complain) +{ + i8 *s2; + i8 *rv; + + s2 = (i8 *) format (0, "$(%s)%c", s, 0); + rv = clib_macro_eval (mm, s2, complain); + vec_free (s2); + return (rv); +} + +void +clib_macro_add_builtin (macro_main_t * mm, char *name, void *eval_fn) +{ + hash_set_mem (mm->the_builtin_eval_hash, name, (uword) eval_fn); +} + +#ifdef CLIB_UNIX +static i8 * +eval_hostname (macro_main_t * mm, i32 complain) +{ + char tmp[128]; + if (gethostname (tmp, sizeof (tmp))) + return ((i8 *) format (0, "gethostname-error%c", 0)); + return ((i8 *) format (0, "%s%c", tmp, 0)); +} +#endif + +void +clib_macro_init (macro_main_t * mm) +{ + if (mm->the_builtin_eval_hash != 0) + { + clib_warning ("mm %p already initialized", mm); + return; + } + + mm->the_builtin_eval_hash = hash_create_string (0, sizeof (uword)); + mm->the_value_table_hash = hash_create_string (0, sizeof (uword)); + +#ifdef CLIB_UNIX + hash_set_mem (mm->the_builtin_eval_hash, "hostname", (uword) eval_hostname); +#endif +} + +void +clib_macro_free (macro_main_t * mm) +{ + hash_pair_t *p; + u8 **strings_to_free = 0; + int i; + + hash_free (mm->the_builtin_eval_hash); + + /* *INDENT-OFF* */ + hash_foreach_pair (p, mm->the_value_table_hash, + ({ + vec_add1 (strings_to_free, (u8 *) (p->key)); + vec_add1 (strings_to_free, (u8 *) (p->value[0])); + })); + /* *INDENT-ON* */ + + for (i = 0; i < vec_len (strings_to_free); i++) + vec_free (strings_to_free[i]); + vec_free (strings_to_free); + hash_free (mm->the_value_table_hash); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/macros.h b/src/vppinfra/macros.h new file mode 100644 index 00000000..5c2e7033 --- /dev/null +++ b/src/vppinfra/macros.h @@ -0,0 +1,54 @@ +/* + macros.h - definitions for a simple macro expander + + Copyright (c) 2010, 2014 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#ifndef included_macros_h +#define included_macros_h + +#include <vppinfra/vec.h> +#include <vppinfra/hash.h> +#include <vppinfra/format.h> + +#ifdef CLIB_UNIX +#include <stdlib.h> +#include <unistd.h> +#endif + +typedef struct +{ + uword *the_builtin_eval_hash; + uword *the_value_table_hash; +} macro_main_t; + +int clib_macro_unset (macro_main_t * mm, char *name); +int clib_macro_set_value (macro_main_t * mm, char *name, char *value); +void clib_macro_add_builtin (macro_main_t * mm, char *name, void *eval_fn); +i8 *clib_macro_get_value (macro_main_t * mm, char *name); +i8 *clib_macro_eval (macro_main_t * mm, i8 * s, i32 complain); +i8 *clib_macro_eval_dollar (macro_main_t * mm, i8 * s, i32 complain); +void clib_macro_init (macro_main_t * mm); +void clib_macro_free (macro_main_t * mm); + +#endif /* included_macros_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/math.h b/src/vppinfra/math.h new file mode 100644 index 00000000..cafa1cb3 --- /dev/null +++ b/src/vppinfra/math.h @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_math_h +#define included_math_h + +#include <vppinfra/clib.h> + +always_inline f64 +sqrt (f64 x) +{ + return __builtin_sqrt (x); +} + +always_inline f64 +fabs (f64 x) +{ + return __builtin_fabs (x); +} + +#ifndef isnan +#define isnan(x) __builtin_isnan(x) +#endif + +#ifndef isinf +#define isinf(x) __builtin_isinf(x) +#endif + +#endif /* included_math_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/md5.c b/src/vppinfra/md5.c new file mode 100644 index 00000000..9ac1efc7 --- /dev/null +++ b/src/vppinfra/md5.c @@ -0,0 +1,317 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm */ + +/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All +rights reserved. + +License to copy and use this software is granted provided that it +is identified as the "RSA Data Security, Inc. MD5 Message-Digest +Algorithm" in all material mentioning or referencing this software +or this function. + +License is also granted to make and use derivative works provided +that such works are identified as "derived from the RSA Data +Security, Inc. MD5 Message-Digest Algorithm" in all material +mentioning or referencing the derived work. + +RSA Data Security, Inc. makes no representations concerning either +the merchantability of this software or the suitability of this +software for any particular purpose. It is provided "as is" +without express or implied warranty of any kind. + +These notices must be retained in any copies of any part of this +documentation and/or software. + */ + +#include <vppinfra/string.h> /* for memset */ +#include <vppinfra/byte_order.h> +#include <vppinfra/md5.h> + +/* F, G, H and I are basic MD5 functions. */ +#define F(b, c, d) (d ^ (b & (c ^ d))) +#define G(b, c, d) F (d, b, c) +#define H(b, c, d) (b ^ c ^ d) +#define I(b, c, d) (c ^ (b | ~d)) + +/* ROTATE_LEFT rotates x left n bits. */ +#define ROTATE_LEFT(x,n) \ + (((x) << (n)) | ((x) >> (32 - (n)))) + +/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. + Rotation is separate from addition to prevent recomputation. */ +#define FF(a,b,c,d,x,s,ac) \ +do { \ + a += F (b, c, d) + x + ac; \ + a = ROTATE_LEFT (a, s); \ + a += b; \ +} while (0) + +#define GG(a,b,c,d,x,s,ac) \ +do { \ + a += G (b, c, d) + x + ac; \ + a = ROTATE_LEFT (a, s); \ + a += b; \ +} while (0) + +#define HH(a,b,c,d,x,s,ac) \ +do { \ + a += H (b, c, d) + x + ac; \ + a = ROTATE_LEFT (a, s); \ + a += b; \ +} while (0) + +#define II(a,b,c,d,x,s,ac) \ +do { \ + a += I (b, c, d) + x + ac; \ + a = ROTATE_LEFT (a, s); \ + a += b; \ +} while (0) + +#undef _ + +/* MD5 basic transformation. Transforms state based on block. */ +static void +md5_transform (md5_context_t * m, u32 * data, u32 * result, int zero_buffer) +{ + u32 a = m->state[0], b = m->state[1], c = m->state[2], d = m->state[3]; + u32 *x = data; + +/* Constants for MD5Transform routine. */ +#define S11 7 +#define S12 12 +#define S13 17 +#define S14 22 +#define S21 5 +#define S22 9 +#define S23 14 +#define S24 20 +#define S31 4 +#define S32 11 +#define S33 16 +#define S34 23 +#define S41 6 +#define S42 10 +#define S43 15 +#define S44 21 + + /* Round 1 */ + FF (a, b, c, d, clib_host_to_little_u32 (x[0]), S11, 0xd76aa478); /* 1 */ + FF (d, a, b, c, clib_host_to_little_u32 (x[1]), S12, 0xe8c7b756); /* 2 */ + FF (c, d, a, b, clib_host_to_little_u32 (x[2]), S13, 0x242070db); /* 3 */ + FF (b, c, d, a, clib_host_to_little_u32 (x[3]), S14, 0xc1bdceee); /* 4 */ + FF (a, b, c, d, clib_host_to_little_u32 (x[4]), S11, 0xf57c0faf); /* 5 */ + FF (d, a, b, c, clib_host_to_little_u32 (x[5]), S12, 0x4787c62a); /* 6 */ + FF (c, d, a, b, clib_host_to_little_u32 (x[6]), S13, 0xa8304613); /* 7 */ + FF (b, c, d, a, clib_host_to_little_u32 (x[7]), S14, 0xfd469501); /* 8 */ + FF (a, b, c, d, clib_host_to_little_u32 (x[8]), S11, 0x698098d8); /* 9 */ + FF (d, a, b, c, clib_host_to_little_u32 (x[9]), S12, 0x8b44f7af); /* 10 */ + FF (c, d, a, b, clib_host_to_little_u32 (x[10]), S13, 0xffff5bb1); /* 11 */ + FF (b, c, d, a, clib_host_to_little_u32 (x[11]), S14, 0x895cd7be); /* 12 */ + FF (a, b, c, d, clib_host_to_little_u32 (x[12]), S11, 0x6b901122); /* 13 */ + FF (d, a, b, c, clib_host_to_little_u32 (x[13]), S12, 0xfd987193); /* 14 */ + FF (c, d, a, b, clib_host_to_little_u32 (x[14]), S13, 0xa679438e); /* 15 */ + FF (b, c, d, a, clib_host_to_little_u32 (x[15]), S14, 0x49b40821); /* 16 */ + + /* Round 2 */ + GG (a, b, c, d, x[1], S21, 0xf61e2562); /* 17 */ + GG (d, a, b, c, x[6], S22, 0xc040b340); /* 18 */ + GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */ + GG (b, c, d, a, x[0], S24, 0xe9b6c7aa); /* 20 */ + GG (a, b, c, d, x[5], S21, 0xd62f105d); /* 21 */ + GG (d, a, b, c, x[10], S22, 0x02441453); /* 22 */ + GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */ + GG (b, c, d, a, x[4], S24, 0xe7d3fbc8); /* 24 */ + GG (a, b, c, d, x[9], S21, 0x21e1cde6); /* 25 */ + GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */ + GG (c, d, a, b, x[3], S23, 0xf4d50d87); /* 27 */ + GG (b, c, d, a, x[8], S24, 0x455a14ed); /* 28 */ + GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */ + GG (d, a, b, c, x[2], S22, 0xfcefa3f8); /* 30 */ + GG (c, d, a, b, x[7], S23, 0x676f02d9); /* 31 */ + GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */ + + /* Round 3 */ + HH (a, b, c, d, x[5], S31, 0xfffa3942); /* 33 */ + HH (d, a, b, c, x[8], S32, 0x8771f681); /* 34 */ + HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */ + HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */ + HH (a, b, c, d, x[1], S31, 0xa4beea44); /* 37 */ + HH (d, a, b, c, x[4], S32, 0x4bdecfa9); /* 38 */ + HH (c, d, a, b, x[7], S33, 0xf6bb4b60); /* 39 */ + HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */ + HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */ + HH (d, a, b, c, x[0], S32, 0xeaa127fa); /* 42 */ + HH (c, d, a, b, x[3], S33, 0xd4ef3085); /* 43 */ + HH (b, c, d, a, x[6], S34, 0x04881d05); /* 44 */ + HH (a, b, c, d, x[9], S31, 0xd9d4d039); /* 45 */ + HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */ + HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */ + HH (b, c, d, a, x[2], S34, 0xc4ac5665); /* 48 */ + + /* Round 4 */ + II (a, b, c, d, x[0], S41, 0xf4292244); /* 49 */ + II (d, a, b, c, x[7], S42, 0x432aff97); /* 50 */ + II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */ + II (b, c, d, a, x[5], S44, 0xfc93a039); /* 52 */ + II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */ + II (d, a, b, c, x[3], S42, 0x8f0ccc92); /* 54 */ + II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */ + II (b, c, d, a, x[1], S44, 0x85845dd1); /* 56 */ + II (a, b, c, d, x[8], S41, 0x6fa87e4f); /* 57 */ + II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */ + II (c, d, a, b, x[6], S43, 0xa3014314); /* 59 */ + II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */ + II (a, b, c, d, x[4], S41, 0xf7537e82); /* 61 */ + II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */ + II (c, d, a, b, x[2], S43, 0x2ad7d2bb); /* 63 */ + II (b, c, d, a, x[9], S44, 0xeb86d391); /* 64 */ + + a += m->state[0]; + b += m->state[1]; + c += m->state[2]; + d += m->state[3]; + + if (result) + { + result[0] = clib_host_to_little_u32 (a); + result[1] = clib_host_to_little_u32 (b); + result[2] = clib_host_to_little_u32 (c); + result[3] = clib_host_to_little_u32 (d); + } + else + { + m->state[0] = a; + m->state[1] = b; + m->state[2] = c; + m->state[3] = d; + } + + /* Zero sensitive information. */ + if (result) + memset (m, ~0, sizeof (m[0])); + else if (zero_buffer) + memset (m->input_buffer.b8, 0, sizeof (m->input_buffer)); +} + +/* MD5 initialization. Begins an MD5 operation, writing a new context. */ +void +md5_init (md5_context_t * c) +{ + memset (c, 0, sizeof (c[0])); + + /* Load magic initialization constants. */ + c->state[0] = 0x67452301; + c->state[1] = 0xefcdab89; + c->state[2] = 0x98badcfe; + c->state[3] = 0x10325476; +} + +always_inline void __attribute__ ((unused)) +md5_fill_buffer_aligned (md5_context_t * c, u32 * d32) +{ + int i; + for (i = 0; i < ARRAY_LEN (c->input_buffer.b32); i++) + c->input_buffer.b32[i] = d32[i]; +} + +/* MD5 block update operation. Continues an MD5 message-digest + operation, processing another message block, and updating the + context. + */ +void +md5_add (md5_context_t * c, void *data, int data_bytes) +{ + u32 data_bytes_left; + void *d; + + if (data_bytes == 0) + return; + + d = data; + data_bytes_left = data_bytes; + + if ((pointer_to_uword (d) % sizeof (u32)) == 0 + && (c->n_bits % BITS (c->input_buffer)) == 0 + && data_bytes >= sizeof (c->input_buffer)) + { + int is_last_iteration; + /* Fast aligned version. */ + do + { + data_bytes_left -= sizeof (c->input_buffer); + is_last_iteration = data_bytes_left < sizeof (c->input_buffer); + md5_transform (c, d, /* result */ 0, /* zero_buffer */ + is_last_iteration); + d += sizeof (c->input_buffer); + } + while (!is_last_iteration); + } + + /* Slow unaligned version. */ + { + int bi; + u8 *d8 = d; + + bi = (c->n_bits / BITS (u8)) % ARRAY_LEN (c->input_buffer.b8); + + while (data_bytes_left > 0) + { + c->input_buffer.b8[bi] = d8[0]; + data_bytes_left -= 1; + d8++; + bi++; + if (bi == ARRAY_LEN (c->input_buffer.b8)) + { + bi = 0; + md5_transform (c, c->input_buffer.b32, + /* result */ 0, + /* zero_buffer */ 1); + } + } + } + + c->n_bits += data_bytes * BITS (u8); +} + +void +md5_finish (md5_context_t * c, u8 * digest) +{ + u64 n_bits_save; + int bi, n_pad; + static u8 padding[sizeof (c->input_buffer)] = { 0x80, 0, }; + + n_bits_save = c->n_bits; + bi = (n_bits_save / BITS (u8)) % ARRAY_LEN (c->input_buffer.b8); + + n_pad = sizeof (c->input_buffer) - (bi + sizeof (u64)); + if (n_pad <= 0) + n_pad += sizeof (c->input_buffer); + md5_add (c, padding, n_pad); + + c->input_buffer.b64[ARRAY_LEN (c->input_buffer.b64) - 1] + = clib_host_to_little_u64 (n_bits_save); + + md5_transform (c, c->input_buffer.b32, (u32 *) digest, + /* zero_buffer */ 1); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/md5.h b/src/vppinfra/md5.h new file mode 100644 index 00000000..52123886 --- /dev/null +++ b/src/vppinfra/md5.h @@ -0,0 +1,57 @@ +/* + Copyright (c) 2004 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_md5_h +#define included_md5_h + +#include <vppinfra/clib.h> + +typedef struct +{ + u64 n_bits; + + u32 state[4]; + + union + { + u64 b64[8]; + u32 b32[16]; + u8 b8[16 * 4]; + } input_buffer; + + /* Resulting message digest filled in by md5_finish. */ +} md5_context_t; + +void md5_init (md5_context_t * c); +void md5_add (md5_context_t * c, void *data, int data_bytes); +void md5_finish (md5_context_t * c, u8 digest[16]); + +#endif /* included_md5_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/mem.h b/src/vppinfra/mem.h new file mode 100644 index 00000000..69ab8803 --- /dev/null +++ b/src/vppinfra/mem.h @@ -0,0 +1,365 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef _included_clib_mem_h +#define _included_clib_mem_h + +#include <stdarg.h> +#include <unistd.h> +#include <sys/mman.h> + +#include <vppinfra/clib.h> /* uword, etc */ +#include <vppinfra/clib_error.h> +#include <vppinfra/mheap_bootstrap.h> +#include <vppinfra/os.h> +#include <vppinfra/string.h> /* memcpy, memset */ +#include <vppinfra/valgrind.h> + +#define CLIB_MAX_MHEAPS 256 + +/* Per CPU heaps. */ +extern void *clib_per_cpu_mheaps[CLIB_MAX_MHEAPS]; + +always_inline void * +clib_mem_get_per_cpu_heap (void) +{ + int cpu = os_get_thread_index (); + return clib_per_cpu_mheaps[cpu]; +} + +always_inline void * +clib_mem_set_per_cpu_heap (u8 * new_heap) +{ + int cpu = os_get_thread_index (); + void *old = clib_per_cpu_mheaps[cpu]; + clib_per_cpu_mheaps[cpu] = new_heap; + return old; +} + +/* Memory allocator which may call os_out_of_memory() if it fails */ +always_inline void * +clib_mem_alloc_aligned_at_offset (uword size, uword align, uword align_offset, + int os_out_of_memory_on_failure) +{ + void *heap, *p; + uword offset, cpu; + + if (align_offset > align) + { + if (align > 0) + align_offset %= align; + else + align_offset = align; + } + + cpu = os_get_thread_index (); + heap = clib_per_cpu_mheaps[cpu]; + heap = mheap_get_aligned (heap, size, align, align_offset, &offset); + clib_per_cpu_mheaps[cpu] = heap; + + if (offset != ~0) + { + p = heap + offset; +#if CLIB_DEBUG > 0 + VALGRIND_MALLOCLIKE_BLOCK (p, mheap_data_bytes (heap, offset), 0, 0); +#endif + return p; + } + else + { + if (os_out_of_memory_on_failure) + os_out_of_memory (); + return 0; + } +} + +/* Memory allocator which calls os_out_of_memory() when it fails */ +always_inline void * +clib_mem_alloc (uword size) +{ + return clib_mem_alloc_aligned_at_offset (size, /* align */ 1, + /* align_offset */ 0, + /* os_out_of_memory */ 1); +} + +always_inline void * +clib_mem_alloc_aligned (uword size, uword align) +{ + return clib_mem_alloc_aligned_at_offset (size, align, /* align_offset */ 0, + /* os_out_of_memory */ 1); +} + +/* Memory allocator which calls os_out_of_memory() when it fails */ +always_inline void * +clib_mem_alloc_or_null (uword size) +{ + return clib_mem_alloc_aligned_at_offset (size, /* align */ 1, + /* align_offset */ 0, + /* os_out_of_memory */ 0); +} + +always_inline void * +clib_mem_alloc_aligned_or_null (uword size, uword align) +{ + return clib_mem_alloc_aligned_at_offset (size, align, /* align_offset */ 0, + /* os_out_of_memory */ 0); +} + + + +/* Memory allocator which panics when it fails. + Use macro so that clib_panic macro can expand __FUNCTION__ and __LINE__. */ +#define clib_mem_alloc_aligned_no_fail(size,align) \ +({ \ + uword _clib_mem_alloc_size = (size); \ + void * _clib_mem_alloc_p; \ + _clib_mem_alloc_p = clib_mem_alloc_aligned (_clib_mem_alloc_size, (align)); \ + if (! _clib_mem_alloc_p) \ + clib_panic ("failed to allocate %d bytes", _clib_mem_alloc_size); \ + _clib_mem_alloc_p; \ +}) + +#define clib_mem_alloc_no_fail(size) clib_mem_alloc_aligned_no_fail(size,1) + +/* Alias to stack allocator for naming consistency. */ +#define clib_mem_alloc_stack(bytes) __builtin_alloca(bytes) + +always_inline uword +clib_mem_is_heap_object (void *p) +{ + void *heap = clib_mem_get_per_cpu_heap (); + uword offset = (uword) p - (uword) heap; + mheap_elt_t *e, *n; + + if (offset >= vec_len (heap)) + return 0; + + e = mheap_elt_at_uoffset (heap, offset); + n = mheap_next_elt (e); + + /* Check that heap forward and reverse pointers agree. */ + return e->n_user_data == n->prev_n_user_data; +} + +always_inline void +clib_mem_free (void *p) +{ + u8 *heap = clib_mem_get_per_cpu_heap (); + + /* Make sure object is in the correct heap. */ + ASSERT (clib_mem_is_heap_object (p)); + + mheap_put (heap, (u8 *) p - heap); + +#if CLIB_DEBUG > 0 + VALGRIND_FREELIKE_BLOCK (p, 0); +#endif +} + +always_inline void * +clib_mem_realloc (void *p, uword new_size, uword old_size) +{ + /* By default use alloc, copy and free to emulate realloc. */ + void *q = clib_mem_alloc (new_size); + if (q) + { + uword copy_size; + if (old_size < new_size) + copy_size = old_size; + else + copy_size = new_size; + clib_memcpy (q, p, copy_size); + clib_mem_free (p); + } + return q; +} + +always_inline uword +clib_mem_size (void *p) +{ + ASSERT (clib_mem_is_heap_object (p)); + mheap_elt_t *e = mheap_user_pointer_to_elt (p); + return mheap_elt_data_bytes (e); +} + +always_inline void * +clib_mem_get_heap (void) +{ + return clib_mem_get_per_cpu_heap (); +} + +always_inline void * +clib_mem_set_heap (void *heap) +{ + return clib_mem_set_per_cpu_heap (heap); +} + +void *clib_mem_init (void *heap, uword size); + +void clib_mem_exit (void); + +uword clib_mem_get_page_size (void); + +void clib_mem_validate (void); + +void clib_mem_trace (int enable); + +typedef struct +{ + /* Total number of objects allocated. */ + uword object_count; + + /* Total allocated bytes. Bytes used and free. + used + free = total */ + uword bytes_total, bytes_used, bytes_free; + + /* Number of bytes used by mheap data structure overhead + (e.g. free lists, mheap header). */ + uword bytes_overhead; + + /* Amount of free space returned to operating system. */ + uword bytes_free_reclaimed; + + /* For malloc which puts small objects in sbrk region and + large objects in mmap'ed regions. */ + uword bytes_used_sbrk; + uword bytes_used_mmap; + + /* Max. number of bytes in this heap. */ + uword bytes_max; +} clib_mem_usage_t; + +void clib_mem_usage (clib_mem_usage_t * usage); + +u8 *format_clib_mem_usage (u8 * s, va_list * args); + +/* Allocate virtual address space. */ +always_inline void * +clib_mem_vm_alloc (uword size) +{ + void *mmap_addr; + uword flags = MAP_PRIVATE; + +#ifdef MAP_ANONYMOUS + flags |= MAP_ANONYMOUS; +#endif + + mmap_addr = mmap (0, size, PROT_READ | PROT_WRITE, flags, -1, 0); + if (mmap_addr == (void *) -1) + mmap_addr = 0; + + return mmap_addr; +} + +always_inline void +clib_mem_vm_free (void *addr, uword size) +{ + munmap (addr, size); +} + +always_inline void * +clib_mem_vm_unmap (void *addr, uword size) +{ + void *mmap_addr; + uword flags = MAP_PRIVATE | MAP_FIXED; + + /* To unmap we "map" with no protection. If we actually called + munmap then other callers could steal the address space. By + changing to PROT_NONE the kernel can free up the pages which is + really what we want "unmap" to mean. */ + mmap_addr = mmap (addr, size, PROT_NONE, flags, -1, 0); + if (mmap_addr == (void *) -1) + mmap_addr = 0; + + return mmap_addr; +} + +always_inline void * +clib_mem_vm_map (void *addr, uword size) +{ + void *mmap_addr; + uword flags = MAP_PRIVATE | MAP_FIXED; + + mmap_addr = mmap (addr, size, (PROT_READ | PROT_WRITE), flags, -1, 0); + if (mmap_addr == (void *) -1) + mmap_addr = 0; + + return mmap_addr; +} + +typedef struct +{ +#define CLIB_MEM_VM_F_SHARED (1 << 0) +#define CLIB_MEM_VM_F_HUGETLB (1 << 1) +#define CLIB_MEM_VM_F_NUMA_PREFER (1 << 2) +#define CLIB_MEM_VM_F_NUMA_FORCE (1 << 3) +#define CLIB_MEM_VM_F_HUGETLB_PREALLOC (1 << 4) + u32 flags; /**< vm allocation flags: + <br> CLIB_MEM_VM_F_SHARED: request shared memory, file + destiptor will be provided on successful allocation. + <br> CLIB_MEM_VM_F_HUGETLB: request hugepages. + <br> CLIB_MEM_VM_F_NUMA_PREFER: numa_node field contains valid + numa node preference. + <br> CLIB_MEM_VM_F_NUMA_FORCE: fail if setting numa policy fails. + <br> CLIB_MEM_VM_F_HUGETLB_PREALLOC: pre-allocate hugepages if + number of available pages is not sufficient. + */ + char *name; /**< Name for memory allocation, set by caller. */ + uword size; /**< Allocation size, set by caller. */ + int numa_node; /**< numa node preference. Valid if CLIB_MEM_VM_F_NUMA_PREFER set. */ + void *addr; /**< Pointer to allocated memory, set on successful allocation. */ + int fd; /**< File desriptor, set on successful allocation if CLIB_MEM_VM_F_SHARED is set. */ + int log2_page_size; /* Page size in log2 format, set on successful allocation. */ + int n_pages; /* Number of pages. */ +} clib_mem_vm_alloc_t; + +clib_error_t *clib_mem_vm_ext_alloc (clib_mem_vm_alloc_t * a); +int clib_mem_vm_get_log2_page_size (int fd); +u64 *clib_mem_vm_get_paddr (void *mem, int log2_page_size, int n_pages); + + +#include <vppinfra/error.h> /* clib_panic */ + +#endif /* _included_clib_mem_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/mem_mheap.c b/src/vppinfra/mem_mheap.c new file mode 100644 index 00000000..9b2af520 --- /dev/null +++ b/src/vppinfra/mem_mheap.c @@ -0,0 +1,165 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/format.h> +#include <vppinfra/mheap.h> +#include <vppinfra/os.h> + +/* Valgrind stuff. */ +#include <vppinfra/memcheck.h> +#include <vppinfra/valgrind.h> + +void *clib_per_cpu_mheaps[CLIB_MAX_MHEAPS]; + +void +clib_mem_exit (void) +{ + u8 *heap = clib_mem_get_per_cpu_heap (); + if (heap) + mheap_free (heap); + clib_mem_set_per_cpu_heap (0); +} + +/* Initialize CLIB heap based on memory/size given by user. + Set memory to 0 and CLIB will try to allocate its own heap. */ +void * +clib_mem_init (void *memory, uword memory_size) +{ + u8 *heap; + + if (memory || memory_size) + heap = mheap_alloc (memory, memory_size); + else + { + /* Allocate lots of address space since this will limit + the amount of memory the program can allocate. + In the kernel we're more conservative since some architectures + (e.g. mips) have pretty small kernel virtual address spaces. */ +#ifdef __KERNEL__ +#define MAX_VM_MEG 64 +#else +#define MAX_VM_MEG 1024 +#endif + + uword alloc_size = MAX_VM_MEG << 20; + uword tries = 16; + + while (1) + { + heap = mheap_alloc (0, alloc_size); + if (heap) + break; + alloc_size = (alloc_size * 3) / 4; + tries--; + if (tries == 0) + break; + } + } + + clib_mem_set_heap (heap); + + return heap; +} + +#ifdef CLIB_LINUX_KERNEL +#include <asm/page.h> + +uword +clib_mem_get_page_size (void) +{ + return PAGE_SIZE; +} +#endif + +#ifdef CLIB_UNIX +uword +clib_mem_get_page_size (void) +{ + return getpagesize (); +} +#endif + +/* Make a guess for standalone. */ +#ifdef CLIB_STANDALONE +uword +clib_mem_get_page_size (void) +{ + return 4096; +} +#endif + +u8 * +format_clib_mem_usage (u8 * s, va_list * va) +{ + int verbose = va_arg (*va, int); + return format (s, "%U", format_mheap, clib_mem_get_heap (), verbose); +} + +void +clib_mem_usage (clib_mem_usage_t * u) +{ + mheap_usage (clib_mem_get_heap (), u); +} + +/* Call serial number for debugger breakpoints. */ +uword clib_mem_validate_serial = 0; + +void +clib_mem_validate (void) +{ + if (MHEAP_HAVE_SMALL_OBJECT_CACHE) + clib_warning ("clib_mem_validate disabled (small object cache is ON)"); + else + { + mheap_validate (clib_mem_get_heap ()); + clib_mem_validate_serial++; + } +} + +void +clib_mem_trace (int enable) +{ + mheap_trace (clib_mem_get_heap (), enable); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/memcheck.h b/src/vppinfra/memcheck.h new file mode 100644 index 00000000..44db3a8a --- /dev/null +++ b/src/vppinfra/memcheck.h @@ -0,0 +1,317 @@ + +/* + ---------------------------------------------------------------- + + Notice that the following BSD-style license applies to this one + file (memcheck.h) only. The rest of Valgrind is licensed under the + terms of the GNU General Public License, version 2, unless + otherwise indicated. See the COPYING file in the source + distribution for details. + + ---------------------------------------------------------------- + + This file is part of MemCheck, a heavyweight Valgrind tool for + detecting memory errors. + + Copyright (C) 2000-2009 Julian Seward. All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + 2. The origin of this software must not be misrepresented; you must + not claim that you wrote the original software. If you use this + software in a product, an acknowledgment in the product + documentation would be appreciated but is not required. + + 3. Altered source versions must be plainly marked as such, and must + not be misrepresented as being the original software. + + 4. The name of the author may not be used to endorse or promote + products derived from this software without specific prior written + permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + ---------------------------------------------------------------- + + Notice that the above BSD-style license applies to this one file + (memcheck.h) only. The entire rest of Valgrind is licensed under + the terms of the GNU General Public License, version 2. See the + COPYING file in the source distribution for details. + + ---------------------------------------------------------------- +*/ + + +#ifndef __MEMCHECK_H +#define __MEMCHECK_H + + +/* This file is for inclusion into client (your!) code. + + You can use these macros to manipulate and query memory permissions + inside your own programs. + + See comment near the top of valgrind.h on how to use them. +*/ + +#include "valgrind.h" + +/* !! ABIWARNING !! ABIWARNING !! ABIWARNING !! ABIWARNING !! + This enum comprises an ABI exported by Valgrind to programs + which use client requests. DO NOT CHANGE THE ORDER OF THESE + ENTRIES, NOR DELETE ANY -- add new ones at the end. */ +typedef enum +{ + VG_USERREQ__MAKE_MEM_NOACCESS = VG_USERREQ_TOOL_BASE ('M', 'C'), + VG_USERREQ__MAKE_MEM_UNDEFINED, + VG_USERREQ__MAKE_MEM_DEFINED, + VG_USERREQ__DISCARD, + VG_USERREQ__CHECK_MEM_IS_ADDRESSABLE, + VG_USERREQ__CHECK_MEM_IS_DEFINED, + VG_USERREQ__DO_LEAK_CHECK, + VG_USERREQ__COUNT_LEAKS, + + VG_USERREQ__GET_VBITS, + VG_USERREQ__SET_VBITS, + + VG_USERREQ__CREATE_BLOCK, + + VG_USERREQ__MAKE_MEM_DEFINED_IF_ADDRESSABLE, + + /* Not next to VG_USERREQ__COUNT_LEAKS because it was added later. */ + VG_USERREQ__COUNT_LEAK_BLOCKS, + + /* This is just for memcheck's internal use - don't use it */ + _VG_USERREQ__MEMCHECK_RECORD_OVERLAP_ERROR + = VG_USERREQ_TOOL_BASE ('M', 'C') + 256 +} Vg_MemCheckClientRequest; + + + +/* Client-code macros to manipulate the state of memory. */ + +/* Mark memory at _qzz_addr as unaddressable for _qzz_len bytes. */ +#define VALGRIND_MAKE_MEM_NOACCESS(_qzz_addr,_qzz_len) \ + (__extension__({unsigned long _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0 /* default return */, \ + VG_USERREQ__MAKE_MEM_NOACCESS, \ + _qzz_addr, _qzz_len, 0, 0, 0); \ + _qzz_res; \ + })) + +/* Similarly, mark memory at _qzz_addr as addressable but undefined + for _qzz_len bytes. */ +#define VALGRIND_MAKE_MEM_UNDEFINED(_qzz_addr,_qzz_len) \ + (__extension__({unsigned long _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0 /* default return */, \ + VG_USERREQ__MAKE_MEM_UNDEFINED, \ + _qzz_addr, _qzz_len, 0, 0, 0); \ + _qzz_res; \ + })) + +/* Similarly, mark memory at _qzz_addr as addressable and defined + for _qzz_len bytes. */ +#define VALGRIND_MAKE_MEM_DEFINED(_qzz_addr,_qzz_len) \ + (__extension__({unsigned long _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0 /* default return */, \ + VG_USERREQ__MAKE_MEM_DEFINED, \ + _qzz_addr, _qzz_len, 0, 0, 0); \ + _qzz_res; \ + })) + +/* Similar to VALGRIND_MAKE_MEM_DEFINED except that addressability is + not altered: bytes which are addressable are marked as defined, + but those which are not addressable are left unchanged. */ +#define VALGRIND_MAKE_MEM_DEFINED_IF_ADDRESSABLE(_qzz_addr,_qzz_len) \ + (__extension__({unsigned long _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0 /* default return */, \ + VG_USERREQ__MAKE_MEM_DEFINED_IF_ADDRESSABLE, \ + _qzz_addr, _qzz_len, 0, 0, 0); \ + _qzz_res; \ + })) + +/* Create a block-description handle. The description is an ascii + string which is included in any messages pertaining to addresses + within the specified memory range. Has no other effect on the + properties of the memory range. */ +#define VALGRIND_CREATE_BLOCK(_qzz_addr,_qzz_len, _qzz_desc) \ + (__extension__({unsigned long _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0 /* default return */, \ + VG_USERREQ__CREATE_BLOCK, \ + _qzz_addr, _qzz_len, _qzz_desc, \ + 0, 0); \ + _qzz_res; \ + })) + +/* Discard a block-description-handle. Returns 1 for an + invalid handle, 0 for a valid handle. */ +#define VALGRIND_DISCARD(_qzz_blkindex) \ + (__extension__ ({unsigned long _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0 /* default return */, \ + VG_USERREQ__DISCARD, \ + 0, _qzz_blkindex, 0, 0, 0); \ + _qzz_res; \ + })) + + +/* Client-code macros to check the state of memory. */ + +/* Check that memory at _qzz_addr is addressable for _qzz_len bytes. + If suitable addressibility is not established, Valgrind prints an + error message and returns the address of the first offending byte. + Otherwise it returns zero. */ +#define VALGRIND_CHECK_MEM_IS_ADDRESSABLE(_qzz_addr,_qzz_len) \ + (__extension__({unsigned long _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__CHECK_MEM_IS_ADDRESSABLE,\ + _qzz_addr, _qzz_len, 0, 0, 0); \ + _qzz_res; \ + })) + +/* Check that memory at _qzz_addr is addressable and defined for + _qzz_len bytes. If suitable addressibility and definedness are not + established, Valgrind prints an error message and returns the + address of the first offending byte. Otherwise it returns zero. */ +#define VALGRIND_CHECK_MEM_IS_DEFINED(_qzz_addr,_qzz_len) \ + (__extension__({unsigned long _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__CHECK_MEM_IS_DEFINED, \ + _qzz_addr, _qzz_len, 0, 0, 0); \ + _qzz_res; \ + })) + +/* Use this macro to force the definedness and addressibility of an + lvalue to be checked. If suitable addressibility and definedness + are not established, Valgrind prints an error message and returns + the address of the first offending byte. Otherwise it returns + zero. */ +#define VALGRIND_CHECK_VALUE_IS_DEFINED(__lvalue) \ + VALGRIND_CHECK_MEM_IS_DEFINED( \ + (volatile unsigned char *)&(__lvalue), \ + (unsigned long)(sizeof (__lvalue))) + + +/* Do a full memory leak check (like --leak-check=full) mid-execution. */ +#define VALGRIND_DO_LEAK_CHECK \ + {unsigned long _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__DO_LEAK_CHECK, \ + 0, 0, 0, 0, 0); \ + } + +/* Do a summary memory leak check (like --leak-check=summary) mid-execution. */ +#define VALGRIND_DO_QUICK_LEAK_CHECK \ + {unsigned long _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__DO_LEAK_CHECK, \ + 1, 0, 0, 0, 0); \ + } + +/* Return number of leaked, dubious, reachable and suppressed bytes found by + all previous leak checks. They must be lvalues. */ +#define VALGRIND_COUNT_LEAKS(leaked, dubious, reachable, suppressed) \ + /* For safety on 64-bit platforms we assign the results to private + unsigned long variables, then assign these to the lvalues the user + specified, which works no matter what type 'leaked', 'dubious', etc + are. We also initialise '_qzz_leaked', etc because + VG_USERREQ__COUNT_LEAKS doesn't mark the values returned as + defined. */ \ + {unsigned long _qzz_res; \ + unsigned long _qzz_leaked = 0, _qzz_dubious = 0; \ + unsigned long _qzz_reachable = 0, _qzz_suppressed = 0; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__COUNT_LEAKS, \ + &_qzz_leaked, &_qzz_dubious, \ + &_qzz_reachable, &_qzz_suppressed, 0); \ + leaked = _qzz_leaked; \ + dubious = _qzz_dubious; \ + reachable = _qzz_reachable; \ + suppressed = _qzz_suppressed; \ + } + +/* Return number of leaked, dubious, reachable and suppressed bytes found by + all previous leak checks. They must be lvalues. */ +#define VALGRIND_COUNT_LEAK_BLOCKS(leaked, dubious, reachable, suppressed) \ + /* For safety on 64-bit platforms we assign the results to private + unsigned long variables, then assign these to the lvalues the user + specified, which works no matter what type 'leaked', 'dubious', etc + are. We also initialise '_qzz_leaked', etc because + VG_USERREQ__COUNT_LEAKS doesn't mark the values returned as + defined. */ \ + {unsigned long _qzz_res; \ + unsigned long _qzz_leaked = 0, _qzz_dubious = 0; \ + unsigned long _qzz_reachable = 0, _qzz_suppressed = 0; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__COUNT_LEAK_BLOCKS, \ + &_qzz_leaked, &_qzz_dubious, \ + &_qzz_reachable, &_qzz_suppressed, 0); \ + leaked = _qzz_leaked; \ + dubious = _qzz_dubious; \ + reachable = _qzz_reachable; \ + suppressed = _qzz_suppressed; \ + } + + +/* Get the validity data for addresses [zza..zza+zznbytes-1] and copy it + into the provided zzvbits array. Return values: + 0 if not running on valgrind + 1 success + 2 [previously indicated unaligned arrays; these are now allowed] + 3 if any parts of zzsrc/zzvbits are not addressable. + The metadata is not copied in cases 0, 2 or 3 so it should be + impossible to segfault your system by using this call. +*/ +#define VALGRIND_GET_VBITS(zza,zzvbits,zznbytes) \ + (__extension__({unsigned long _qzz_res; \ + char* czza = (char*)zza; \ + char* czzvbits = (char*)zzvbits; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__GET_VBITS, \ + czza, czzvbits, zznbytes, 0, 0 ); \ + _qzz_res; \ + })) + +/* Set the validity data for addresses [zza..zza+zznbytes-1], copying it + from the provided zzvbits array. Return values: + 0 if not running on valgrind + 1 success + 2 [previously indicated unaligned arrays; these are now allowed] + 3 if any parts of zza/zzvbits are not addressable. + The metadata is not copied in cases 0, 2 or 3 so it should be + impossible to segfault your system by using this call. +*/ +#define VALGRIND_SET_VBITS(zza,zzvbits,zznbytes) \ + (__extension__({unsigned int _qzz_res; \ + char* czza = (char*)zza; \ + char* czzvbits = (char*)zzvbits; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__SET_VBITS, \ + czza, czzvbits, zznbytes, 0, 0 ); \ + _qzz_res; \ + })) + +#endif + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/memcpy_avx.h b/src/vppinfra/memcpy_avx.h new file mode 100644 index 00000000..e987d044 --- /dev/null +++ b/src/vppinfra/memcpy_avx.h @@ -0,0 +1,296 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef included_clib_memcpy_avx_h +#define included_clib_memcpy_avx_h + +#include <stdint.h> +#include <x86intrin.h> + +static inline void +clib_mov16 (u8 * dst, const u8 * src) +{ + __m128i xmm0; + + xmm0 = _mm_loadu_si128 ((const __m128i *) src); + _mm_storeu_si128 ((__m128i *) dst, xmm0); +} + +static inline void +clib_mov32 (u8 * dst, const u8 * src) +{ + __m256i ymm0; + + ymm0 = _mm256_loadu_si256 ((const __m256i *) src); + _mm256_storeu_si256 ((__m256i *) dst, ymm0); +} + +static inline void +clib_mov64 (u8 * dst, const u8 * src) +{ + clib_mov32 ((u8 *) dst + 0 * 32, (const u8 *) src + 0 * 32); + clib_mov32 ((u8 *) dst + 1 * 32, (const u8 *) src + 1 * 32); +} + +static inline void +clib_mov128 (u8 * dst, const u8 * src) +{ + clib_mov64 ((u8 *) dst + 0 * 64, (const u8 *) src + 0 * 64); + clib_mov64 ((u8 *) dst + 1 * 64, (const u8 *) src + 1 * 64); +} + +static inline void +clib_mov256 (u8 * dst, const u8 * src) +{ + clib_mov128 ((u8 *) dst + 0 * 128, (const u8 *) src + 0 * 128); + clib_mov128 ((u8 *) dst + 1 * 128, (const u8 *) src + 1 * 128); +} + +static inline void +clib_mov64blocks (u8 * dst, const u8 * src, size_t n) +{ + __m256i ymm0, ymm1; + + while (n >= 64) + { + ymm0 = + _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 0 * 32)); + n -= 64; + ymm1 = + _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 1 * 32)); + src = (const u8 *) src + 64; + _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 0 * 32), ymm0); + _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 1 * 32), ymm1); + dst = (u8 *) dst + 64; + } +} + +static inline void +clib_mov256blocks (u8 * dst, const u8 * src, size_t n) +{ + __m256i ymm0, ymm1, ymm2, ymm3, ymm4, ymm5, ymm6, ymm7; + + while (n >= 256) + { + ymm0 = + _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 0 * 32)); + n -= 256; + ymm1 = + _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 1 * 32)); + ymm2 = + _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 2 * 32)); + ymm3 = + _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 3 * 32)); + ymm4 = + _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 4 * 32)); + ymm5 = + _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 5 * 32)); + ymm6 = + _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 6 * 32)); + ymm7 = + _mm256_loadu_si256 ((const __m256i *) ((const u8 *) src + 7 * 32)); + src = (const u8 *) src + 256; + _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 0 * 32), ymm0); + _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 1 * 32), ymm1); + _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 2 * 32), ymm2); + _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 3 * 32), ymm3); + _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 4 * 32), ymm4); + _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 5 * 32), ymm5); + _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 6 * 32), ymm6); + _mm256_storeu_si256 ((__m256i *) ((u8 *) dst + 7 * 32), ymm7); + dst = (u8 *) dst + 256; + } +} + +static inline void * +clib_memcpy (void *dst, const void *src, size_t n) +{ + uword dstu = (uword) dst; + uword srcu = (uword) src; + void *ret = dst; + size_t dstofss; + size_t bits; + + /** + * Copy less than 16 bytes + */ + if (n < 16) + { + if (n & 0x01) + { + *(u8 *) dstu = *(const u8 *) srcu; + srcu = (uword) ((const u8 *) srcu + 1); + dstu = (uword) ((u8 *) dstu + 1); + } + if (n & 0x02) + { + *(uint16_t *) dstu = *(const uint16_t *) srcu; + srcu = (uword) ((const uint16_t *) srcu + 1); + dstu = (uword) ((uint16_t *) dstu + 1); + } + if (n & 0x04) + { + *(uint32_t *) dstu = *(const uint32_t *) srcu; + srcu = (uword) ((const uint32_t *) srcu + 1); + dstu = (uword) ((uint32_t *) dstu + 1); + } + if (n & 0x08) + { + *(uint64_t *) dstu = *(const uint64_t *) srcu; + } + return ret; + } + + /** + * Fast way when copy size doesn't exceed 512 bytes + */ + if (n <= 32) + { + clib_mov16 ((u8 *) dst, (const u8 *) src); + clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n); + return ret; + } + if (n <= 64) + { + clib_mov32 ((u8 *) dst, (const u8 *) src); + clib_mov32 ((u8 *) dst - 32 + n, (const u8 *) src - 32 + n); + return ret; + } + if (n <= 512) + { + if (n >= 256) + { + n -= 256; + clib_mov256 ((u8 *) dst, (const u8 *) src); + src = (const u8 *) src + 256; + dst = (u8 *) dst + 256; + } + if (n >= 128) + { + n -= 128; + clib_mov128 ((u8 *) dst, (const u8 *) src); + src = (const u8 *) src + 128; + dst = (u8 *) dst + 128; + } + if (n >= 64) + { + n -= 64; + clib_mov64 ((u8 *) dst, (const u8 *) src); + src = (const u8 *) src + 64; + dst = (u8 *) dst + 64; + } + COPY_BLOCK_64_BACK31: + if (n > 32) + { + clib_mov32 ((u8 *) dst, (const u8 *) src); + clib_mov32 ((u8 *) dst - 32 + n, (const u8 *) src - 32 + n); + return ret; + } + if (n > 0) + { + clib_mov32 ((u8 *) dst - 32 + n, (const u8 *) src - 32 + n); + } + return ret; + } + + /** + * Make store aligned when copy size exceeds 512 bytes + */ + dstofss = (uword) dst & 0x1F; + if (dstofss > 0) + { + dstofss = 32 - dstofss; + n -= dstofss; + clib_mov32 ((u8 *) dst, (const u8 *) src); + src = (const u8 *) src + dstofss; + dst = (u8 *) dst + dstofss; + } + + /** + * Copy 256-byte blocks. + * Use copy block function for better instruction order control, + * which is important when load is unaligned. + */ + clib_mov256blocks ((u8 *) dst, (const u8 *) src, n); + bits = n; + n = n & 255; + bits -= n; + src = (const u8 *) src + bits; + dst = (u8 *) dst + bits; + + /** + * Copy 64-byte blocks. + * Use copy block function for better instruction order control, + * which is important when load is unaligned. + */ + if (n >= 64) + { + clib_mov64blocks ((u8 *) dst, (const u8 *) src, n); + bits = n; + n = n & 63; + bits -= n; + src = (const u8 *) src + bits; + dst = (u8 *) dst + bits; + } + + /** + * Copy whatever left + */ + goto COPY_BLOCK_64_BACK31; +} + + +#endif /* included_clib_mamcpy_avx_h */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/memcpy_sse3.h b/src/vppinfra/memcpy_sse3.h new file mode 100644 index 00000000..f61396c8 --- /dev/null +++ b/src/vppinfra/memcpy_sse3.h @@ -0,0 +1,356 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef included_clib_memcpy_sse3_h +#define included_clib_memcpy_sse3_h + +#include <stdint.h> +#include <x86intrin.h> + +static inline void +clib_mov16 (u8 * dst, const u8 * src) +{ + __m128i xmm0; + + xmm0 = _mm_loadu_si128 ((const __m128i *) src); + _mm_storeu_si128 ((__m128i *) dst, xmm0); +} + +static inline void +clib_mov32 (u8 * dst, const u8 * src) +{ + clib_mov16 ((u8 *) dst + 0 * 16, (const u8 *) src + 0 * 16); + clib_mov16 ((u8 *) dst + 1 * 16, (const u8 *) src + 1 * 16); +} + +static inline void +clib_mov64 (u8 * dst, const u8 * src) +{ + clib_mov32 ((u8 *) dst + 0 * 32, (const u8 *) src + 0 * 32); + clib_mov32 ((u8 *) dst + 1 * 32, (const u8 *) src + 1 * 32); +} + +static inline void +clib_mov128 (u8 * dst, const u8 * src) +{ + clib_mov64 ((u8 *) dst + 0 * 64, (const u8 *) src + 0 * 64); + clib_mov64 ((u8 *) dst + 1 * 64, (const u8 *) src + 1 * 64); +} + +static inline void +clib_mov256 (u8 * dst, const u8 * src) +{ + clib_mov128 ((u8 *) dst + 0 * 128, (const u8 *) src + 0 * 128); + clib_mov128 ((u8 *) dst + 1 * 128, (const u8 *) src + 1 * 128); +} + +/** + * Macro for copying unaligned block from one location to another with constant load offset, + * 47 bytes leftover maximum, + * locations should not overlap. + * Requirements: + * - Store is aligned + * - Load offset is <offset>, which must be immediate value within [1, 15] + * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading + * - <dst>, <src>, <len> must be variables + * - __m128i <xmm0> ~ <xmm8> must be pre-defined + */ +#define CLIB_MVUNALIGN_LEFT47_IMM(dst, src, len, offset) \ +({ \ + int tmp; \ + while (len >= 128 + 16 - offset) { \ + xmm0 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 0 * 16)); \ + len -= 128; \ + xmm1 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 1 * 16)); \ + xmm2 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 2 * 16)); \ + xmm3 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 3 * 16)); \ + xmm4 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 4 * 16)); \ + xmm5 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 5 * 16)); \ + xmm6 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 6 * 16)); \ + xmm7 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 7 * 16)); \ + xmm8 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 8 * 16)); \ + src = (const u8 *)src + 128; \ + _mm_storeu_si128((__m128i *)((u8 *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset)); \ + _mm_storeu_si128((__m128i *)((u8 *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset)); \ + _mm_storeu_si128((__m128i *)((u8 *)dst + 2 * 16), _mm_alignr_epi8(xmm3, xmm2, offset)); \ + _mm_storeu_si128((__m128i *)((u8 *)dst + 3 * 16), _mm_alignr_epi8(xmm4, xmm3, offset)); \ + _mm_storeu_si128((__m128i *)((u8 *)dst + 4 * 16), _mm_alignr_epi8(xmm5, xmm4, offset)); \ + _mm_storeu_si128((__m128i *)((u8 *)dst + 5 * 16), _mm_alignr_epi8(xmm6, xmm5, offset)); \ + _mm_storeu_si128((__m128i *)((u8 *)dst + 6 * 16), _mm_alignr_epi8(xmm7, xmm6, offset)); \ + _mm_storeu_si128((__m128i *)((u8 *)dst + 7 * 16), _mm_alignr_epi8(xmm8, xmm7, offset)); \ + dst = (u8 *)dst + 128; \ + } \ + tmp = len; \ + len = ((len - 16 + offset) & 127) + 16 - offset; \ + tmp -= len; \ + src = (const u8 *)src + tmp; \ + dst = (u8 *)dst + tmp; \ + if (len >= 32 + 16 - offset) { \ + while (len >= 32 + 16 - offset) { \ + xmm0 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 0 * 16)); \ + len -= 32; \ + xmm1 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 1 * 16)); \ + xmm2 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 2 * 16)); \ + src = (const u8 *)src + 32; \ + _mm_storeu_si128((__m128i *)((u8 *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset)); \ + _mm_storeu_si128((__m128i *)((u8 *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset)); \ + dst = (u8 *)dst + 32; \ + } \ + tmp = len; \ + len = ((len - 16 + offset) & 31) + 16 - offset; \ + tmp -= len; \ + src = (const u8 *)src + tmp; \ + dst = (u8 *)dst + tmp; \ + } \ +}) + +/** + * Macro for copying unaligned block from one location to another, + * 47 bytes leftover maximum, + * locations should not overlap. + * Use switch here because the aligning instruction requires immediate value for shift count. + * Requirements: + * - Store is aligned + * - Load offset is <offset>, which must be within [1, 15] + * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading + * - <dst>, <src>, <len> must be variables + * - __m128i <xmm0> ~ <xmm8> used in CLIB_MVUNALIGN_LEFT47_IMM must be pre-defined + */ +#define CLIB_MVUNALIGN_LEFT47(dst, src, len, offset) \ +({ \ + switch (offset) { \ + case 0x01: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x01); break; \ + case 0x02: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x02); break; \ + case 0x03: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x03); break; \ + case 0x04: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x04); break; \ + case 0x05: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x05); break; \ + case 0x06: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x06); break; \ + case 0x07: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x07); break; \ + case 0x08: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x08); break; \ + case 0x09: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x09); break; \ + case 0x0A: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0A); break; \ + case 0x0B: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0B); break; \ + case 0x0C: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0C); break; \ + case 0x0D: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0D); break; \ + case 0x0E: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0E); break; \ + case 0x0F: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0F); break; \ + default:; \ + } \ +}) + +static inline void * +clib_memcpy (void *dst, const void *src, size_t n) +{ + __m128i xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8; + uword dstu = (uword) dst; + uword srcu = (uword) src; + void *ret = dst; + size_t dstofss; + size_t srcofs; + + /** + * Copy less than 16 bytes + */ + if (n < 16) + { + if (n & 0x01) + { + *(u8 *) dstu = *(const u8 *) srcu; + srcu = (uword) ((const u8 *) srcu + 1); + dstu = (uword) ((u8 *) dstu + 1); + } + if (n & 0x02) + { + *(u16 *) dstu = *(const u16 *) srcu; + srcu = (uword) ((const u16 *) srcu + 1); + dstu = (uword) ((u16 *) dstu + 1); + } + if (n & 0x04) + { + *(u32 *) dstu = *(const u32 *) srcu; + srcu = (uword) ((const u32 *) srcu + 1); + dstu = (uword) ((u32 *) dstu + 1); + } + if (n & 0x08) + { + *(u64 *) dstu = *(const u64 *) srcu; + } + return ret; + } + + /** + * Fast way when copy size doesn't exceed 512 bytes + */ + if (n <= 32) + { + clib_mov16 ((u8 *) dst, (const u8 *) src); + clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n); + return ret; + } + if (n <= 48) + { + clib_mov32 ((u8 *) dst, (const u8 *) src); + clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n); + return ret; + } + if (n <= 64) + { + clib_mov32 ((u8 *) dst, (const u8 *) src); + clib_mov16 ((u8 *) dst + 32, (const u8 *) src + 32); + clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n); + return ret; + } + if (n <= 128) + { + goto COPY_BLOCK_128_BACK15; + } + if (n <= 512) + { + if (n >= 256) + { + n -= 256; + clib_mov128 ((u8 *) dst, (const u8 *) src); + clib_mov128 ((u8 *) dst + 128, (const u8 *) src + 128); + src = (const u8 *) src + 256; + dst = (u8 *) dst + 256; + } + COPY_BLOCK_255_BACK15: + if (n >= 128) + { + n -= 128; + clib_mov128 ((u8 *) dst, (const u8 *) src); + src = (const u8 *) src + 128; + dst = (u8 *) dst + 128; + } + COPY_BLOCK_128_BACK15: + if (n >= 64) + { + n -= 64; + clib_mov64 ((u8 *) dst, (const u8 *) src); + src = (const u8 *) src + 64; + dst = (u8 *) dst + 64; + } + COPY_BLOCK_64_BACK15: + if (n >= 32) + { + n -= 32; + clib_mov32 ((u8 *) dst, (const u8 *) src); + src = (const u8 *) src + 32; + dst = (u8 *) dst + 32; + } + if (n > 16) + { + clib_mov16 ((u8 *) dst, (const u8 *) src); + clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n); + return ret; + } + if (n > 0) + { + clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n); + } + return ret; + } + + /** + * Make store aligned when copy size exceeds 512 bytes, + * and make sure the first 15 bytes are copied, because + * unaligned copy functions require up to 15 bytes + * backwards access. + */ + dstofss = 16 - ((uword) dst & 0x0F) + 16; + n -= dstofss; + clib_mov32 ((u8 *) dst, (const u8 *) src); + src = (const u8 *) src + dstofss; + dst = (u8 *) dst + dstofss; + srcofs = ((uword) src & 0x0F); + + /** + * For aligned copy + */ + if (srcofs == 0) + { + /** + * Copy 256-byte blocks + */ + for (; n >= 256; n -= 256) + { + clib_mov256 ((u8 *) dst, (const u8 *) src); + dst = (u8 *) dst + 256; + src = (const u8 *) src + 256; + } + + /** + * Copy whatever left + */ + goto COPY_BLOCK_255_BACK15; + } + + /** + * For copy with unaligned load + */ + CLIB_MVUNALIGN_LEFT47 (dst, src, n, srcofs); + + /** + * Copy whatever left + */ + goto COPY_BLOCK_64_BACK15; +} + + +#undef CLIB_MVUNALIGN_LEFT47_IMM +#undef CLIB_MVUNALIGN_LEFT47 + +#endif /* included_clib_memcpy_sse3_h */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/mhash.c b/src/vppinfra/mhash.c new file mode 100644 index 00000000..00b67c49 --- /dev/null +++ b/src/vppinfra/mhash.c @@ -0,0 +1,408 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2010 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/mhash.h> + +always_inline u32 +load_partial_u32 (void *d, uword n) +{ + if (n == 4) + return ((u32 *) d)[0]; + if (n == 3) + return ((u16 *) d)[0] | (((u8 *) d)[2] << 16); + if (n == 2) + return ((u16 *) d)[0]; + if (n == 1) + return ((u8 *) d)[0]; + ASSERT (0); + return 0; +} + +always_inline u32 +mhash_key_sum_inline (void *data, uword n_data_bytes, u32 seed) +{ + u32 *d32 = data; + u32 a, b, c, n_left; + + a = b = c = seed; + n_left = n_data_bytes; + a ^= n_data_bytes; + + while (n_left > 12) + { + a += d32[0]; + b += d32[1]; + c += d32[2]; + hash_v3_mix32 (a, b, c); + n_left -= 12; + d32 += 3; + } + + if (n_left > 8) + { + c += load_partial_u32 (d32 + 2, n_left - 8); + n_left = 8; + } + if (n_left > 4) + { + b += load_partial_u32 (d32 + 1, n_left - 4); + n_left = 4; + } + if (n_left > 0) + a += load_partial_u32 (d32 + 0, n_left - 0); + + hash_v3_finalize32 (a, b, c); + + return c; +} + +#define foreach_mhash_key_size \ + _ (2) _ (3) _ (4) _ (5) _ (6) _ (7) \ + _ (8) _ (12) _ (16) _ (20) \ + _ (24) _ (28) _ (32) _ (36) \ + _ (40) _ (44) _ (48) _ (52) \ + _ (56) _ (60) _ (64) + +#define _(N_KEY_BYTES) \ + static uword \ + mhash_key_sum_##N_KEY_BYTES (hash_t * h, uword key) \ + { \ + mhash_t * hv = uword_to_pointer (h->user, mhash_t *); \ + return mhash_key_sum_inline (mhash_key_to_mem (hv, key), \ + (N_KEY_BYTES), \ + hv->hash_seed); \ + } \ + \ + static uword \ + mhash_key_equal_##N_KEY_BYTES (hash_t * h, uword key1, uword key2) \ + { \ + mhash_t * hv = uword_to_pointer (h->user, mhash_t *); \ + void * k1 = mhash_key_to_mem (hv, key1); \ + void * k2 = mhash_key_to_mem (hv, key2); \ + return ! memcmp (k1, k2, (N_KEY_BYTES)); \ + } + +foreach_mhash_key_size +#undef _ +static uword +mhash_key_sum_c_string (hash_t * h, uword key) +{ + mhash_t *hv = uword_to_pointer (h->user, mhash_t *); + void *k = mhash_key_to_mem (hv, key); + return mhash_key_sum_inline (k, strlen (k), hv->hash_seed); +} + +static uword +mhash_key_equal_c_string (hash_t * h, uword key1, uword key2) +{ + mhash_t *hv = uword_to_pointer (h->user, mhash_t *); + void *k1 = mhash_key_to_mem (hv, key1); + void *k2 = mhash_key_to_mem (hv, key2); + return strcmp (k1, k2) == 0; +} + +static uword +mhash_key_sum_vec_string (hash_t * h, uword key) +{ + mhash_t *hv = uword_to_pointer (h->user, mhash_t *); + void *k = mhash_key_to_mem (hv, key); + return mhash_key_sum_inline (k, vec_len (k), hv->hash_seed); +} + +static uword +mhash_key_equal_vec_string (hash_t * h, uword key1, uword key2) +{ + mhash_t *hv = uword_to_pointer (h->user, mhash_t *); + void *k1 = mhash_key_to_mem (hv, key1); + void *k2 = mhash_key_to_mem (hv, key2); + return vec_len (k1) == vec_len (k2) && memcmp (k1, k2, vec_len (k1)) == 0; +} + +/* The CLIB hash user pointer must always point to a valid mhash_t. + Now, the address of mhash_t can change (think vec_resize). + So we must always be careful that it points to the correct + address. */ +always_inline void +mhash_sanitize_hash_user (mhash_t * mh) +{ + uword *hash = mh->hash; + hash_t *h = hash_header (hash); + h->user = pointer_to_uword (mh); +} + +void +mhash_init (mhash_t * h, uword n_value_bytes, uword n_key_bytes) +{ + static struct + { + hash_key_sum_function_t *key_sum; + hash_key_equal_function_t *key_equal; + } t[] = + { +#define _(N_KEY_BYTES) \ + [N_KEY_BYTES] = { \ + .key_sum = mhash_key_sum_##N_KEY_BYTES, \ + .key_equal = mhash_key_equal_##N_KEY_BYTES, \ + }, + + foreach_mhash_key_size +#undef _ + [MHASH_C_STRING_KEY] = + { + .key_sum = mhash_key_sum_c_string,.key_equal = mhash_key_equal_c_string,}, + [MHASH_VEC_STRING_KEY] = + { + .key_sum = mhash_key_sum_vec_string,.key_equal = + mhash_key_equal_vec_string,},}; + + if (mhash_key_vector_is_heap (h)) + heap_free (h->key_vector_or_heap); + else + vec_free (h->key_vector_or_heap); + vec_free (h->key_vector_free_indices); + { + int i; + for (i = 0; i < vec_len (h->key_tmps); i++) + vec_free (h->key_tmps[i]); + } + vec_free (h->key_tmps); + hash_free (h->hash); + + memset (h, 0, sizeof (h[0])); + h->n_key_bytes = n_key_bytes; + +#if 0 + if (h->n_key_bytes > 0) + { + vec_validate (h->key_tmp, h->n_key_bytes - 1); + _vec_len (h->key_tmp) = 0; + } +#endif + + ASSERT (n_key_bytes < ARRAY_LEN (t)); + h->hash = hash_create2 ( /* elts */ 0, + /* user */ pointer_to_uword (h), + /* value_bytes */ n_value_bytes, + t[n_key_bytes].key_sum, t[n_key_bytes].key_equal, + /* format pair/arg */ + 0, 0); +} + +static uword +mhash_set_tmp_key (mhash_t * h, const void *key) +{ + u8 *key_tmp; + int my_cpu = os_get_thread_index (); + + vec_validate (h->key_tmps, my_cpu); + key_tmp = h->key_tmps[my_cpu]; + + vec_reset_length (key_tmp); + + if (mhash_key_vector_is_heap (h)) + { + uword is_c_string = h->n_key_bytes == MHASH_C_STRING_KEY; + + if (is_c_string) + vec_add (key_tmp, key, strlen (key) + 1); + else + vec_add (key_tmp, key, vec_len (key)); + } + else + vec_add (key_tmp, key, h->n_key_bytes); + + h->key_tmps[my_cpu] = key_tmp; + + return ~0; +} + +hash_pair_t * +mhash_get_pair (mhash_t * h, const void *key) +{ + uword ikey; + mhash_sanitize_hash_user (h); + ikey = mhash_set_tmp_key (h, key); + return hash_get_pair (h->hash, ikey); +} + +typedef struct +{ + u32 heap_handle; + + /* Must conincide with vec_header. */ + vec_header_t vec; +} mhash_string_key_t; + +uword +mhash_set_mem (mhash_t * h, void *key, uword * new_value, uword * old_value) +{ + u8 *k; + uword ikey, i, l = 0, n_key_bytes, old_n_elts, key_alloc_from_free_list = 0; + + mhash_sanitize_hash_user (h); + + if (mhash_key_vector_is_heap (h)) + { + mhash_string_key_t *sk; + uword is_c_string = h->n_key_bytes == MHASH_C_STRING_KEY; + uword handle; + + n_key_bytes = is_c_string ? (strlen (key) + 1) : vec_len (key); + i = + heap_alloc (h->key_vector_or_heap, n_key_bytes + sizeof (sk[0]), + handle); + + sk = (void *) (h->key_vector_or_heap + i); + sk->heap_handle = handle; + sk->vec.len = n_key_bytes; + clib_memcpy (sk->vec.vector_data, key, n_key_bytes); + + /* Advance key past vector header. */ + i += sizeof (sk[0]); + } + else + { + key_alloc_from_free_list = (l = + vec_len (h->key_vector_free_indices)) > 0; + if (key_alloc_from_free_list) + { + i = h->key_vector_free_indices[l - 1]; + k = vec_elt_at_index (h->key_vector_or_heap, i); + _vec_len (h->key_vector_free_indices) = l - 1; + } + else + { + vec_add2 (h->key_vector_or_heap, k, h->n_key_bytes); + i = k - h->key_vector_or_heap; + } + + n_key_bytes = h->n_key_bytes; + clib_memcpy (k, key, n_key_bytes); + } + ikey = i; + + old_n_elts = hash_elts (h->hash); + h->hash = _hash_set3 (h->hash, ikey, new_value, old_value); + + /* If element already existed remove duplicate key. */ + if (hash_elts (h->hash) == old_n_elts) + { + hash_pair_t *p; + + /* Fetch old key for return value. */ + p = hash_get_pair (h->hash, ikey); + ikey = p->key; + + /* Remove duplicate key. */ + if (mhash_key_vector_is_heap (h)) + { + mhash_string_key_t *sk; + sk = (void *) (h->key_vector_or_heap + i - sizeof (sk[0])); + heap_dealloc (h->key_vector_or_heap, sk->heap_handle); + } + else + { + if (key_alloc_from_free_list) + { + h->key_vector_free_indices[l] = i; + _vec_len (h->key_vector_free_indices) = l + 1; + } + else + _vec_len (h->key_vector_or_heap) -= h->n_key_bytes; + } + } + + return ikey; +} + +uword +mhash_unset (mhash_t * h, void *key, uword * old_value) +{ + hash_pair_t *p; + uword i; + + mhash_sanitize_hash_user (h); + i = mhash_set_tmp_key (h, key); + + p = hash_get_pair (h->hash, i); + if (!p) + return 0; + + ASSERT (p->key != ~0); + i = p->key; + + if (mhash_key_vector_is_heap (h)) + { + mhash_string_key_t *sk; + sk = (void *) (h->key_vector_or_heap + i) - sizeof (sk[0]); + heap_dealloc (h->key_vector_or_heap, sk->heap_handle); + } + else + vec_add1 (h->key_vector_free_indices, i); + + hash_unset3 (h->hash, i, old_value); + return 1; +} + +u8 * +format_mhash_key (u8 * s, va_list * va) +{ + mhash_t *h = va_arg (*va, mhash_t *); + u32 ki = va_arg (*va, u32); + void *k = mhash_key_to_mem (h, ki); + + if (mhash_key_vector_is_heap (h)) + { + uword is_c_string = h->n_key_bytes == MHASH_C_STRING_KEY; + u32 l = is_c_string ? strlen (k) : vec_len (k); + vec_add (s, k, l); + } + else if (h->format_key) + s = format (s, "%U", h->format_key, k); + else + s = format (s, "%U", format_hex_bytes, k, h->n_key_bytes); + + return s; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/mhash.h b/src/vppinfra/mhash.h new file mode 100644 index 00000000..7eb19183 --- /dev/null +++ b/src/vppinfra/mhash.h @@ -0,0 +1,179 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef included_clib_mhash_h +#define included_clib_mhash_h + +/* + Copyright (c) 2010 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/format.h> +#include <vppinfra/hash.h> +#include <vppinfra/heap.h> + +/* Hash table plus vector of keys. */ +typedef struct +{ + /* Vector or heap used to store keys. Hash table stores keys as byte + offsets into this vector. */ + u8 *key_vector_or_heap; + + /* Byte offsets of free keys in vector (used to store free keys when + n_key_bytes > 1). */ + u32 *key_vector_free_indices; + + u8 **key_tmps; + + /* Possibly fixed size of key. + 0 means keys are vectors of u8's. + 1 means keys are null terminated c strings. */ +#define MHASH_VEC_STRING_KEY 0 +#define MHASH_C_STRING_KEY 1 + u32 n_key_bytes; + + /* Seed value for Jenkins hash. */ + u32 hash_seed; + + /* Hash table mapping key -> value. */ + uword *hash; + + /* Format function for keys. */ + format_function_t *format_key; +} mhash_t; + +void mhash_init (mhash_t * h, uword n_value_bytes, uword n_key_bytes); + +always_inline void +mhash_init_c_string (mhash_t * h, uword n_value_bytes) +{ + mhash_init (h, n_value_bytes, MHASH_C_STRING_KEY); +} + +always_inline void +mhash_init_vec_string (mhash_t * h, uword n_value_bytes) +{ + mhash_init (h, n_value_bytes, MHASH_VEC_STRING_KEY); +} + +always_inline void * +mhash_key_to_mem (mhash_t * h, uword key) +{ + if (key == ~0) + { + u8 *key_tmp; + + int my_cpu = os_get_thread_index (); + vec_validate (h->key_tmps, my_cpu); + key_tmp = h->key_tmps[my_cpu]; + return key_tmp; + } + return vec_elt_at_index (h->key_vector_or_heap, key); +} + +hash_pair_t *mhash_get_pair (mhash_t * h, const void *key); +uword mhash_set_mem (mhash_t * h, void *key, uword * new_value, + uword * old_value); +uword mhash_unset (mhash_t * h, void *key, uword * old_value); + +always_inline uword * +mhash_get (mhash_t * h, const void *key) +{ + hash_pair_t *p = mhash_get_pair (h, key); + return p ? &p->value[0] : 0; +} + +always_inline uword +mhash_set (mhash_t * h, void *key, uword new_value, uword * old_value) +{ + return mhash_set_mem (h, key, &new_value, old_value); +} + +always_inline uword +mhash_unset_key (mhash_t * h, uword key, uword * old_value) +{ + void *k = mhash_key_to_mem (h, key); + return mhash_unset (h, k, old_value); +} + +always_inline uword +mhash_value_bytes (mhash_t * m) +{ + hash_t *h = hash_header (m->hash); + return hash_value_bytes (h); +} + +always_inline uword +mhash_elts (mhash_t * m) +{ + return hash_elts (m->hash); +} + +always_inline uword +mhash_key_vector_is_heap (mhash_t * h) +{ + return h->n_key_bytes <= 1; +} + +always_inline void +mhash_free (mhash_t * h) +{ + if (mhash_key_vector_is_heap (h)) + heap_free (h->key_vector_or_heap); + else + vec_free (h->key_vector_or_heap); + vec_free (h->key_vector_free_indices); + hash_free (h->hash); +} + +#define mhash_foreach(k,v,mh,body) \ +do { \ + hash_pair_t * _mhash_foreach_p; \ + hash_foreach_pair (_mhash_foreach_p, (mh)->hash, ({ \ + (k) = mhash_key_to_mem ((mh), _mhash_foreach_p->key); \ + (v) = &_mhash_foreach_p->value[0]; \ + body; \ + })); \ +} while (0) + +format_function_t format_mhash_key; + +#endif /* included_clib_mhash_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/mheap.c b/src/vppinfra/mheap.c new file mode 100644 index 00000000..5bbbc65f --- /dev/null +++ b/src/vppinfra/mheap.c @@ -0,0 +1,1643 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/bitops.h> +#include <vppinfra/hash.h> +#include <vppinfra/format.h> +#include <vppinfra/mheap.h> +#include <vppinfra/os.h> +#include <vppinfra/time.h> + +#ifdef CLIB_UNIX +#include <vppinfra/elf_clib.h> +#endif + +static void mheap_get_trace (void *v, uword offset, uword size); +static void mheap_put_trace (void *v, uword offset, uword size); +static int mheap_trace_sort (const void *t1, const void *t2); + +always_inline void +mheap_maybe_lock (void *v) +{ + mheap_t *h = mheap_header (v); + if (v && (h->flags & MHEAP_FLAG_THREAD_SAFE)) + { + u32 my_cpu = os_get_thread_index (); + if (h->owner_cpu == my_cpu) + { + h->recursion_count++; + return; + } + + while (__sync_lock_test_and_set (&h->lock, 1)) + ; + + h->owner_cpu = my_cpu; + h->recursion_count = 1; + } +} + +always_inline void +mheap_maybe_unlock (void *v) +{ + mheap_t *h = mheap_header (v); + if (v && h->flags & MHEAP_FLAG_THREAD_SAFE) + { + ASSERT (os_get_thread_index () == h->owner_cpu); + if (--h->recursion_count == 0) + { + h->owner_cpu = ~0; + CLIB_MEMORY_BARRIER (); + h->lock = 0; + } + } +} + +/* Find bin for objects with size at least n_user_data_bytes. */ +always_inline uword +user_data_size_to_bin_index (uword n_user_data_bytes) +{ + uword n_user_data_words; + word small_bin, large_bin; + + /* User size must be at least big enough to hold free elt. */ + n_user_data_bytes = clib_max (n_user_data_bytes, MHEAP_MIN_USER_DATA_BYTES); + + /* Round to words. */ + n_user_data_words = + (round_pow2 (n_user_data_bytes, MHEAP_USER_DATA_WORD_BYTES) / + MHEAP_USER_DATA_WORD_BYTES); + + ASSERT (n_user_data_words > 0); + small_bin = + n_user_data_words - + (MHEAP_MIN_USER_DATA_BYTES / MHEAP_USER_DATA_WORD_BYTES); + ASSERT (small_bin >= 0); + + large_bin = + MHEAP_N_SMALL_OBJECT_BINS + max_log2 (n_user_data_bytes) - + MHEAP_LOG2_N_SMALL_OBJECT_BINS; + + return small_bin < MHEAP_N_SMALL_OBJECT_BINS ? small_bin : large_bin; +} + +always_inline uword +mheap_elt_size_to_user_n_bytes (uword n_bytes) +{ + ASSERT (n_bytes >= sizeof (mheap_elt_t)); + return (n_bytes - STRUCT_OFFSET_OF (mheap_elt_t, user_data)); +} + +always_inline uword __attribute__ ((unused)) +mheap_elt_size_to_user_n_words (uword n_bytes) +{ + ASSERT (n_bytes % MHEAP_USER_DATA_WORD_BYTES == 0); + return mheap_elt_size_to_user_n_bytes (n_bytes) / + MHEAP_USER_DATA_WORD_BYTES; +} + +always_inline void +mheap_elt_set_size (void *v, + uword uoffset, uword n_user_data_bytes, uword is_free) +{ + mheap_elt_t *e, *n; + + e = mheap_elt_at_uoffset (v, uoffset); + + ASSERT (n_user_data_bytes % MHEAP_USER_DATA_WORD_BYTES == 0); + + e->n_user_data = n_user_data_bytes / MHEAP_USER_DATA_WORD_BYTES; + e->is_free = is_free; + ASSERT (e->prev_n_user_data * sizeof (e->user_data[0]) >= + MHEAP_MIN_USER_DATA_BYTES); + + n = mheap_next_elt (e); + n->prev_n_user_data = e->n_user_data; + n->prev_is_free = is_free; +} + +always_inline void +set_first_free_elt_offset (mheap_t * h, uword bin, uword uoffset) +{ + uword i0, i1; + + h->first_free_elt_uoffset_by_bin[bin] = uoffset; + + i0 = bin / BITS (h->non_empty_free_elt_heads[0]); + i1 = (uword) 1 << (uword) (bin % BITS (h->non_empty_free_elt_heads[0])); + + ASSERT (i0 < ARRAY_LEN (h->non_empty_free_elt_heads)); + if (h->first_free_elt_uoffset_by_bin[bin] == MHEAP_GROUNDED) + h->non_empty_free_elt_heads[i0] &= ~i1; + else + h->non_empty_free_elt_heads[i0] |= i1; +} + +always_inline void +set_free_elt (void *v, uword uoffset, uword n_user_data_bytes) +{ + mheap_t *h = mheap_header (v); + mheap_elt_t *e = mheap_elt_at_uoffset (v, uoffset); + mheap_elt_t *n = mheap_next_elt (e); + uword bin = user_data_size_to_bin_index (n_user_data_bytes); + + ASSERT (n->prev_is_free); + ASSERT (e->is_free); + + e->free_elt.prev_uoffset = MHEAP_GROUNDED; + e->free_elt.next_uoffset = h->first_free_elt_uoffset_by_bin[bin]; + + /* Fill in next free elt's previous pointer. */ + if (e->free_elt.next_uoffset != MHEAP_GROUNDED) + { + mheap_elt_t *nf = mheap_elt_at_uoffset (v, e->free_elt.next_uoffset); + ASSERT (nf->is_free); + nf->free_elt.prev_uoffset = uoffset; + } + + set_first_free_elt_offset (h, bin, uoffset); +} + +always_inline void +new_free_elt (void *v, uword uoffset, uword n_user_data_bytes) +{ + mheap_elt_set_size (v, uoffset, n_user_data_bytes, /* is_free */ 1); + set_free_elt (v, uoffset, n_user_data_bytes); +} + +always_inline void +remove_free_elt (void *v, mheap_elt_t * e, uword bin) +{ + mheap_t *h = mheap_header (v); + mheap_elt_t *p, *n; +#if CLIB_VEC64 > 0 + u64 no, po; +#else + u32 no, po; +#endif + + no = e->free_elt.next_uoffset; + + n = no != MHEAP_GROUNDED ? mheap_elt_at_uoffset (v, no) : 0; + po = e->free_elt.prev_uoffset; + p = po != MHEAP_GROUNDED ? mheap_elt_at_uoffset (v, po) : 0; + + if (!p) + set_first_free_elt_offset (h, bin, no); + else + p->free_elt.next_uoffset = no; + + if (n) + n->free_elt.prev_uoffset = po; +} + +always_inline void +remove_free_elt2 (void *v, mheap_elt_t * e) +{ + uword bin; + bin = user_data_size_to_bin_index (mheap_elt_data_bytes (e)); + remove_free_elt (v, e, bin); +} + +#define MHEAP_VM_MAP (1 << 0) +#define MHEAP_VM_UNMAP (1 << 1) +#define MHEAP_VM_NOMAP (0 << 1) +#define MHEAP_VM_ROUND (1 << 2) +#define MHEAP_VM_ROUND_UP MHEAP_VM_ROUND +#define MHEAP_VM_ROUND_DOWN (0 << 2) + +static uword mheap_page_size; + +static_always_inline uword +mheap_page_round (uword addr) +{ + return (addr + mheap_page_size - 1) & ~(mheap_page_size - 1); +} + +static_always_inline uword +mheap_page_truncate (uword addr) +{ + return addr & ~(mheap_page_size - 1); +} + +static_always_inline uword +mheap_vm (void *v, uword flags, clib_address_t start_addr, uword size) +{ + mheap_t *h = mheap_header (v); + clib_address_t start_page, end_page, end_addr; + uword mapped_bytes; + + ASSERT (!(h->flags & MHEAP_FLAG_DISABLE_VM)); + + end_addr = start_addr + size; + + /* Round start/end address up to page boundary. */ + start_page = mheap_page_round (start_addr); + + if ((flags & MHEAP_VM_ROUND) == MHEAP_VM_ROUND_UP) + end_page = mheap_page_round (end_addr); + else + end_page = mheap_page_truncate (end_addr); + + mapped_bytes = 0; + if (end_page > start_page) + { + mapped_bytes = end_page - start_page; + if (flags & MHEAP_VM_MAP) + clib_mem_vm_map ((void *) start_page, end_page - start_page); + else if (flags & MHEAP_VM_UNMAP) + clib_mem_vm_unmap ((void *) start_page, end_page - start_page); + } + + return mapped_bytes; +} + +static_always_inline uword +mheap_vm_elt (void *v, uword flags, uword offset) +{ + mheap_elt_t *e; + clib_address_t start_addr, end_addr; + + e = mheap_elt_at_uoffset (v, offset); + start_addr = (clib_address_t) ((void *) e->user_data); + end_addr = (clib_address_t) mheap_next_elt (e); + return mheap_vm (v, flags, start_addr, end_addr - start_addr); +} + +always_inline uword +mheap_small_object_cache_mask (mheap_small_object_cache_t * c, uword bin) +{ + uword mask; + +/* $$$$ ELIOT FIXME: add Altivec version of this routine */ +#if !defined (CLIB_HAVE_VEC128) || defined (__ALTIVEC__) || defined (__i386__) + mask = 0; +#else + u8x16 b = u8x16_splat (bin); + + ASSERT (bin < 256); + +#define _(i) ((uword) u8x16_compare_byte_mask (u8x16_is_equal (b, c->bins.as_u8x16[i])) << (uword) ((i)*16)) + mask = _(0) | _(1); + if (BITS (uword) > 32) + mask |= _(2) | _(3); +#undef _ + +#endif + return mask; +} + +always_inline uword +mheap_get_small_object (mheap_t * h, uword bin) +{ + mheap_small_object_cache_t *c = &h->small_object_cache; + uword mask = mheap_small_object_cache_mask (c, bin + 1); + uword offset = MHEAP_GROUNDED; + + if (mask) + { + uword i = min_log2 (mask); + uword o = c->offsets[i]; + ASSERT (o != MHEAP_GROUNDED); + c->bins.as_u8[i] = 0; + offset = o; + } + + return offset; +} + +always_inline uword +mheap_put_small_object (mheap_t * h, uword bin, uword offset) +{ + mheap_small_object_cache_t *c = &h->small_object_cache; + uword free_mask = mheap_small_object_cache_mask (c, 0); + uword b = bin + 1; + uword i; + + if (free_mask != 0) + { + i = min_log2 (free_mask); + c->bins.as_u8[i] = b; + c->offsets[i] = offset; + return 0; + } + else + /* Nothing free with right size: cyclic replacement. */ + { + uword old_offset; + + i = c->replacement_index++; + i %= BITS (uword); + c->bins.as_u8[i] = b; + old_offset = c->offsets[i]; + c->offsets[i] = offset; + + /* Return old offset so it can be freed. */ + return old_offset; + } +} + +static uword +mheap_get_search_free_bin (void *v, + uword bin, + uword * n_user_data_bytes_arg, + uword align, uword align_offset) +{ + mheap_t *h = mheap_header (v); + mheap_elt_t *e; + + /* Free object is at offset f0 ... f1; + Allocatted object is at offset o0 ... o1. */ + word o0, o1, f0, f1, search_n_user_data_bytes; + word lo_free_usize, hi_free_usize; + + ASSERT (h->first_free_elt_uoffset_by_bin[bin] != MHEAP_GROUNDED); + e = mheap_elt_at_uoffset (v, h->first_free_elt_uoffset_by_bin[bin]); + + search_n_user_data_bytes = *n_user_data_bytes_arg; + + /* Silence compiler warning. */ + o0 = o1 = f0 = f1 = 0; + + h->stats.free_list.n_search_attempts += 1; + + /* Find an object that is large enough with correct alignment at given alignment offset. */ + while (1) + { + uword this_object_n_user_data_bytes = mheap_elt_data_bytes (e); + + ASSERT (e->is_free); + if (bin < MHEAP_N_SMALL_OBJECT_BINS) + ASSERT (this_object_n_user_data_bytes >= search_n_user_data_bytes); + + h->stats.free_list.n_objects_searched += 1; + + if (this_object_n_user_data_bytes < search_n_user_data_bytes) + goto next; + + /* Bounds of free object: from f0 to f1. */ + f0 = ((void *) e->user_data - v); + f1 = f0 + this_object_n_user_data_bytes; + + /* Place candidate object at end of free block and align as requested. */ + o0 = ((f1 - search_n_user_data_bytes) & ~(align - 1)) - align_offset; + while (o0 < f0) + o0 += align; + + /* Make sure that first free fragment is either empty or + large enough to be valid. */ + while (1) + { + lo_free_usize = o0 != f0 ? o0 - f0 - MHEAP_ELT_OVERHEAD_BYTES : 0; + if (o0 <= f0 || lo_free_usize >= (word) MHEAP_MIN_USER_DATA_BYTES) + break; + o0 -= align; + } + + o1 = o0 + search_n_user_data_bytes; + + /* Does it fit? */ + if (o0 >= f0 && o1 <= f1) + goto found; + + next: + /* Reached end of free list without finding large enough object. */ + if (e->free_elt.next_uoffset == MHEAP_GROUNDED) + return MHEAP_GROUNDED; + + /* Otherwise keep searching for large enough object. */ + e = mheap_elt_at_uoffset (v, e->free_elt.next_uoffset); + } + +found: + /* Free fragment at end. */ + hi_free_usize = f1 != o1 ? f1 - o1 - MHEAP_ELT_OVERHEAD_BYTES : 0; + + /* If fragment at end is too small to be a new object, + give user's object a bit more space than requested. */ + if (hi_free_usize < (word) MHEAP_MIN_USER_DATA_BYTES) + { + search_n_user_data_bytes += f1 - o1; + o1 = f1; + hi_free_usize = 0; + } + + /* Need to make sure that relevant memory areas are mapped. */ + if (!(h->flags & MHEAP_FLAG_DISABLE_VM)) + { + mheap_elt_t *f0_elt = mheap_elt_at_uoffset (v, f0); + mheap_elt_t *f1_elt = mheap_elt_at_uoffset (v, f1); + mheap_elt_t *o0_elt = mheap_elt_at_uoffset (v, o0); + mheap_elt_t *o1_elt = mheap_elt_at_uoffset (v, o1); + + uword f0_page_start, f0_page_end; + uword o0_page_start, o0_page_end; + + /* Free elt is mapped. Addresses after that may not be mapped. */ + f0_page_start = mheap_page_round (pointer_to_uword (f0_elt->user_data)); + f0_page_end = mheap_page_truncate (pointer_to_uword (f1_elt)); + + o0_page_start = mheap_page_truncate (pointer_to_uword (o0_elt)); + o0_page_end = mheap_page_round (pointer_to_uword (o1_elt->user_data)); + + if (o0_page_start < f0_page_start) + o0_page_start = f0_page_start; + if (o0_page_end > f0_page_end) + o0_page_end = f0_page_end; + + if (o0_page_end > o0_page_start) + clib_mem_vm_map (uword_to_pointer (o0_page_start, void *), + o0_page_end - o0_page_start); + } + + /* Remove free object from free list. */ + remove_free_elt (v, e, bin); + + /* Free fragment at begining. */ + if (lo_free_usize > 0) + { + ASSERT (lo_free_usize >= (word) MHEAP_MIN_USER_DATA_BYTES); + mheap_elt_set_size (v, f0, lo_free_usize, /* is_free */ 1); + new_free_elt (v, f0, lo_free_usize); + } + + mheap_elt_set_size (v, o0, search_n_user_data_bytes, /* is_free */ 0); + + if (hi_free_usize > 0) + { + uword uo = o1 + MHEAP_ELT_OVERHEAD_BYTES; + mheap_elt_set_size (v, uo, hi_free_usize, /* is_free */ 1); + new_free_elt (v, uo, hi_free_usize); + } + + /* Return actual size of block. */ + *n_user_data_bytes_arg = search_n_user_data_bytes; + + h->stats.free_list.n_objects_found += 1; + + return o0; +} + +/* Search free lists for object with given size and alignment. */ +static uword +mheap_get_search_free_list (void *v, + uword * n_user_bytes_arg, + uword align, uword align_offset) +{ + mheap_t *h = mheap_header (v); + uword bin, n_user_bytes, i, bi; + + n_user_bytes = *n_user_bytes_arg; + bin = user_data_size_to_bin_index (n_user_bytes); + + if (MHEAP_HAVE_SMALL_OBJECT_CACHE + && (h->flags & MHEAP_FLAG_SMALL_OBJECT_CACHE) + && bin < 255 + && align == STRUCT_SIZE_OF (mheap_elt_t, user_data[0]) + && align_offset == 0) + { + uword r = mheap_get_small_object (h, bin); + h->stats.n_small_object_cache_attempts += 1; + if (r != MHEAP_GROUNDED) + { + h->stats.n_small_object_cache_hits += 1; + return r; + } + } + + for (i = bin / BITS (uword); i < ARRAY_LEN (h->non_empty_free_elt_heads); + i++) + { + uword non_empty_bin_mask = h->non_empty_free_elt_heads[i]; + + /* No need to search smaller bins. */ + if (i == bin / BITS (uword)) + non_empty_bin_mask &= ~pow2_mask (bin % BITS (uword)); + + /* Search each occupied free bin which is large enough. */ + /* *INDENT-OFF* */ + foreach_set_bit (bi, non_empty_bin_mask, + ({ + uword r = + mheap_get_search_free_bin (v, bi + i * BITS (uword), + n_user_bytes_arg, + align, + align_offset); + if (r != MHEAP_GROUNDED) return r; + })); + /* *INDENT-ON* */ + } + + return MHEAP_GROUNDED; +} + +static never_inline void * +mheap_get_extend_vector (void *v, + uword n_user_data_bytes, + uword align, + uword align_offset, uword * offset_return) +{ + /* Bounds of free and allocated objects (as above). */ + uword f0, f1, o0, o1; + word free_size; + mheap_t *h = mheap_header (v); + mheap_elt_t *e; + + if (_vec_len (v) == 0) + { + _vec_len (v) = MHEAP_ELT_OVERHEAD_BYTES; + + /* Create first element of heap. */ + e = mheap_elt_at_uoffset (v, _vec_len (v)); + e->prev_n_user_data = MHEAP_N_USER_DATA_INVALID; + } + + f0 = _vec_len (v); + + o0 = round_pow2 (f0, align) - align_offset; + while (1) + { + free_size = o0 - f0 - MHEAP_ELT_OVERHEAD_BYTES; + if (o0 == f0 || free_size >= (word) sizeof (mheap_elt_t)) + break; + + o0 += align; + } + + o1 = o0 + n_user_data_bytes; + f1 = o1 + MHEAP_ELT_OVERHEAD_BYTES; + + ASSERT (v != 0); + h = mheap_header (v); + + /* Make sure we have space for object plus overhead. */ + if (f1 > h->max_size) + { + *offset_return = MHEAP_GROUNDED; + return v; + } + + _vec_len (v) = f1; + + if (!(h->flags & MHEAP_FLAG_DISABLE_VM)) + { + mheap_elt_t *f0_elt = mheap_elt_at_uoffset (v, f0); + mheap_elt_t *f1_elt = mheap_elt_at_uoffset (v, f1); + + uword f0_page = mheap_page_round (pointer_to_uword (f0_elt->user_data)); + uword f1_page = mheap_page_round (pointer_to_uword (f1_elt->user_data)); + + if (f1_page > f0_page) + mheap_vm (v, MHEAP_VM_MAP, f0_page, f1_page - f0_page); + } + + if (free_size > 0) + new_free_elt (v, f0, free_size); + + mheap_elt_set_size (v, o0, n_user_data_bytes, /* is_free */ 0); + + /* Mark last element. */ + e = mheap_elt_at_uoffset (v, f1); + e->n_user_data = MHEAP_N_USER_DATA_INVALID; + + *offset_return = o0; + + return v; +} + +void * +mheap_get_aligned (void *v, + uword n_user_data_bytes, + uword align, uword align_offset, uword * offset_return) +{ + mheap_t *h; + uword offset; + u64 cpu_times[2]; + + cpu_times[0] = clib_cpu_time_now (); + + align = clib_max (align, STRUCT_SIZE_OF (mheap_elt_t, user_data[0])); + align = max_pow2 (align); + + /* Correct align offset to be smaller than alignment. */ + align_offset &= (align - 1); + + /* Align offset must be multiple of minimum object size. */ + if (align_offset % STRUCT_SIZE_OF (mheap_elt_t, user_data[0]) != 0) + { + *offset_return = MHEAP_GROUNDED; + return v; + } + + /* Round requested size. */ + n_user_data_bytes = clib_max (n_user_data_bytes, MHEAP_MIN_USER_DATA_BYTES); + n_user_data_bytes = + round_pow2 (n_user_data_bytes, + STRUCT_SIZE_OF (mheap_elt_t, user_data[0])); + + if (!v) + v = mheap_alloc (0, 64 << 20); + + mheap_maybe_lock (v); + + h = mheap_header (v); + + if (h->flags & MHEAP_FLAG_VALIDATE) + mheap_validate (v); + + /* First search free lists for object. */ + offset = + mheap_get_search_free_list (v, &n_user_data_bytes, align, align_offset); + + h = mheap_header (v); + + /* If that fails allocate object at end of heap by extending vector. */ + if (offset == MHEAP_GROUNDED && _vec_len (v) < h->max_size) + { + v = + mheap_get_extend_vector (v, n_user_data_bytes, align, align_offset, + &offset); + h = mheap_header (v); + h->stats.n_vector_expands += offset != MHEAP_GROUNDED; + } + + *offset_return = offset; + if (offset != MHEAP_GROUNDED) + { + h->n_elts += 1; + + if (h->flags & MHEAP_FLAG_TRACE) + { + /* Recursion block for case when we are traceing main clib heap. */ + h->flags &= ~MHEAP_FLAG_TRACE; + + mheap_get_trace (v, offset, n_user_data_bytes); + + h->flags |= MHEAP_FLAG_TRACE; + } + } + + if (h->flags & MHEAP_FLAG_VALIDATE) + mheap_validate (v); + + mheap_maybe_unlock (v); + + cpu_times[1] = clib_cpu_time_now (); + h->stats.n_clocks_get += cpu_times[1] - cpu_times[0]; + h->stats.n_gets += 1; + + return v; +} + +static void +free_last_elt (void *v, mheap_elt_t * e) +{ + mheap_t *h = mheap_header (v); + + /* Possibly delete preceeding free element also. */ + if (e->prev_is_free) + { + e = mheap_prev_elt (e); + remove_free_elt2 (v, e); + } + + if (e->prev_n_user_data == MHEAP_N_USER_DATA_INVALID) + { + if (!(h->flags & MHEAP_FLAG_DISABLE_VM)) + mheap_vm_elt (v, MHEAP_VM_UNMAP, mheap_elt_uoffset (v, e)); + _vec_len (v) = 0; + } + else + { + uword uo = mheap_elt_uoffset (v, e); + if (!(h->flags & MHEAP_FLAG_DISABLE_VM)) + mheap_vm_elt (v, MHEAP_VM_UNMAP, uo); + e->n_user_data = MHEAP_N_USER_DATA_INVALID; + _vec_len (v) = uo; + } +} + +void +mheap_put (void *v, uword uoffset) +{ + mheap_t *h; + uword n_user_data_bytes, bin; + mheap_elt_t *e, *n; + uword trace_uoffset, trace_n_user_data_bytes; + u64 cpu_times[2]; + + cpu_times[0] = clib_cpu_time_now (); + + h = mheap_header (v); + + mheap_maybe_lock (v); + + if (h->flags & MHEAP_FLAG_VALIDATE) + mheap_validate (v); + + ASSERT (h->n_elts > 0); + h->n_elts--; + h->stats.n_puts += 1; + + e = mheap_elt_at_uoffset (v, uoffset); + n = mheap_next_elt (e); + n_user_data_bytes = mheap_elt_data_bytes (e); + + trace_uoffset = uoffset; + trace_n_user_data_bytes = n_user_data_bytes; + + bin = user_data_size_to_bin_index (n_user_data_bytes); + if (MHEAP_HAVE_SMALL_OBJECT_CACHE + && bin < 255 && (h->flags & MHEAP_FLAG_SMALL_OBJECT_CACHE)) + { + uoffset = mheap_put_small_object (h, bin, uoffset); + if (uoffset == 0) + goto done; + + e = mheap_elt_at_uoffset (v, uoffset); + n = mheap_next_elt (e); + n_user_data_bytes = mheap_elt_data_bytes (e); + } + + /* Assert that forward and back pointers are equal. */ + if (e->n_user_data != n->prev_n_user_data) + os_panic (); + + /* Forward and backwards is_free must agree. */ + if (e->is_free != n->prev_is_free) + os_panic (); + + /* Object was already freed. */ + if (e->is_free) + os_panic (); + + /* Special case: delete last element in heap. */ + if (n->n_user_data == MHEAP_N_USER_DATA_INVALID) + free_last_elt (v, e); + + else + { + uword f0, f1, n_combine; + + f0 = uoffset; + f1 = f0 + n_user_data_bytes; + n_combine = 0; + + if (e->prev_is_free) + { + mheap_elt_t *p = mheap_prev_elt (e); + f0 = mheap_elt_uoffset (v, p); + remove_free_elt2 (v, p); + n_combine++; + } + + if (n->is_free) + { + mheap_elt_t *m = mheap_next_elt (n); + f1 = (void *) m - v; + remove_free_elt2 (v, n); + n_combine++; + } + + if (n_combine) + mheap_elt_set_size (v, f0, f1 - f0, /* is_free */ 1); + else + e->is_free = n->prev_is_free = 1; + set_free_elt (v, f0, f1 - f0); + + if (!(h->flags & MHEAP_FLAG_DISABLE_VM)) + mheap_vm_elt (v, MHEAP_VM_UNMAP, f0); + } + +done: + h = mheap_header (v); + + if (h->flags & MHEAP_FLAG_TRACE) + { + /* Recursion block for case when we are traceing main clib heap. */ + h->flags &= ~MHEAP_FLAG_TRACE; + + mheap_put_trace (v, trace_uoffset, trace_n_user_data_bytes); + + h->flags |= MHEAP_FLAG_TRACE; + } + + if (h->flags & MHEAP_FLAG_VALIDATE) + mheap_validate (v); + + mheap_maybe_unlock (v); + + cpu_times[1] = clib_cpu_time_now (); + h->stats.n_clocks_put += cpu_times[1] - cpu_times[0]; +} + +void * +mheap_alloc_with_flags (void *memory, uword memory_size, uword flags) +{ + mheap_t *h; + void *v; + uword size; + + if (!mheap_page_size) + mheap_page_size = clib_mem_get_page_size (); + + if (!memory) + { + /* No memory given, try to VM allocate some. */ + memory = clib_mem_vm_alloc (memory_size); + if (!memory) + return 0; + + /* No memory region implies we have virtual memory. */ + flags &= ~MHEAP_FLAG_DISABLE_VM; + } + + /* Make sure that given memory is page aligned. */ + { + uword am, av, ah; + + am = pointer_to_uword (memory); + av = mheap_page_round (am); + v = uword_to_pointer (av, void *); + h = mheap_header (v); + ah = pointer_to_uword (h); + while (ah < am) + ah += mheap_page_size; + + h = uword_to_pointer (ah, void *); + v = mheap_vector (h); + + if (PREDICT_FALSE (memory + memory_size < v)) + { + /* + * This will happen when the requested memory_size is too + * small to cope with the heap header and/or memory alignment. + */ + clib_mem_vm_free (memory, memory_size); + return 0; + } + + size = memory + memory_size - v; + } + + /* VM map header so we can use memory. */ + if (!(flags & MHEAP_FLAG_DISABLE_VM)) + clib_mem_vm_map (h, sizeof (h[0])); + + /* Zero vector header: both heap header and vector length. */ + memset (h, 0, sizeof (h[0])); + _vec_len (v) = 0; + + h->vm_alloc_offset_from_header = (void *) h - memory; + h->vm_alloc_size = memory_size; + + h->max_size = size; + h->owner_cpu = ~0; + + /* Set flags based on those given less builtin-flags. */ + h->flags |= (flags & ~MHEAP_FLAG_TRACE); + + /* Unmap remainder of heap until we will be ready to use it. */ + if (!(h->flags & MHEAP_FLAG_DISABLE_VM)) + mheap_vm (v, MHEAP_VM_UNMAP | MHEAP_VM_ROUND_UP, + (clib_address_t) v, h->max_size); + + /* Initialize free list heads to empty. */ + memset (h->first_free_elt_uoffset_by_bin, 0xFF, + sizeof (h->first_free_elt_uoffset_by_bin)); + + return v; +} + +void * +mheap_alloc (void *memory, uword size) +{ + uword flags = 0; + + if (memory != 0) + flags |= MHEAP_FLAG_DISABLE_VM; + +#ifdef CLIB_HAVE_VEC128 + flags |= MHEAP_FLAG_SMALL_OBJECT_CACHE; +#endif + + return mheap_alloc_with_flags (memory, size, flags); +} + +void * +_mheap_free (void *v) +{ + mheap_t *h = mheap_header (v); + + if (v) + clib_mem_vm_free ((void *) h - h->vm_alloc_offset_from_header, + h->vm_alloc_size); + + return 0; +} + +/* Call user's function with each object in heap. */ +void +mheap_foreach (void *v, + uword (*func) (void *arg, void *v, void *elt_data, + uword elt_size), void *arg) +{ + mheap_elt_t *e; + u8 *stack_heap, *clib_mem_mheap_save; + u8 tmp_heap_memory[16 * 1024]; + + mheap_maybe_lock (v); + + if (vec_len (v) == 0) + goto done; + + clib_mem_mheap_save = 0; + stack_heap = 0; + + /* Allocate a new temporary heap on the stack. + This is so that our hash table & user's callback function can + themselves allocate memory somewhere without getting in the way + of the heap we are looking at. */ + if (v == clib_mem_get_heap ()) + { + stack_heap = mheap_alloc (tmp_heap_memory, sizeof (tmp_heap_memory)); + clib_mem_mheap_save = v; + clib_mem_set_heap (stack_heap); + } + + for (e = v; + e->n_user_data != MHEAP_N_USER_DATA_INVALID; e = mheap_next_elt (e)) + { + void *p = mheap_elt_data (v, e); + if (e->is_free) + continue; + if ((*func) (arg, v, p, mheap_elt_data_bytes (e))) + break; + } + + /* Restore main CLIB heap. */ + if (clib_mem_mheap_save) + clib_mem_set_heap (clib_mem_mheap_save); + +done: + mheap_maybe_unlock (v); +} + +/* Bytes in mheap header overhead not including data bytes. */ +always_inline uword +mheap_bytes_overhead (void *v) +{ + mheap_t *h = mheap_header (v); + return v ? sizeof (h[0]) + h->n_elts * sizeof (mheap_elt_t) : 0; +} + +/* Total number of bytes including both data and overhead. */ +uword +mheap_bytes (void *v) +{ + return mheap_bytes_overhead (v) + vec_bytes (v); +} + +static void +mheap_usage_no_lock (void *v, clib_mem_usage_t * usage) +{ + mheap_t *h = mheap_header (v); + uword used = 0, free = 0, free_vm_unmapped = 0; + + if (vec_len (v) > 0) + { + mheap_elt_t *e; + + for (e = v; + e->n_user_data != MHEAP_N_USER_DATA_INVALID; + e = mheap_next_elt (e)) + { + uword size = mheap_elt_data_bytes (e); + if (e->is_free) + { + free += size; + if (!(h->flags & MHEAP_FLAG_DISABLE_VM)) + free_vm_unmapped += + mheap_vm_elt (v, MHEAP_VM_NOMAP, mheap_elt_uoffset (v, e)); + } + else + used += size; + } + } + + usage->object_count = mheap_elts (v); + usage->bytes_total = mheap_bytes (v); + usage->bytes_overhead = mheap_bytes_overhead (v); + usage->bytes_max = mheap_max_size (v); + usage->bytes_used = used; + usage->bytes_free = free; + usage->bytes_free_reclaimed = free_vm_unmapped; +} + +void +mheap_usage (void *v, clib_mem_usage_t * usage) +{ + mheap_maybe_lock (v); + mheap_usage_no_lock (v, usage); + mheap_maybe_unlock (v); +} + +static u8 * +format_mheap_byte_count (u8 * s, va_list * va) +{ + uword n_bytes = va_arg (*va, uword); + if (n_bytes < 1024) + return format (s, "%wd", n_bytes); + else + return format (s, "%wdk", n_bytes / 1024); +} + +/* Returns first corrupt heap element. */ +static mheap_elt_t * +mheap_first_corrupt (void *v) +{ + mheap_elt_t *e, *n; + + if (vec_len (v) == 0) + return 0; + + e = v; + while (1) + { + if (e->n_user_data == MHEAP_N_USER_DATA_INVALID) + break; + + n = mheap_next_elt (e); + + if (e->n_user_data != n->prev_n_user_data) + return e; + + if (e->is_free != n->prev_is_free) + return e; + + e = n; + } + + return 0; +} + +static u8 * +format_mheap_stats (u8 * s, va_list * va) +{ + mheap_t *h = va_arg (*va, mheap_t *); + mheap_stats_t *st = &h->stats; + uword indent = format_get_indent (s); + + s = + format (s, + "alloc. from small object cache: %Ld hits %Ld attempts (%.2f%%) replacements %d", + st->n_small_object_cache_hits, st->n_small_object_cache_attempts, + (st->n_small_object_cache_attempts != + 0 ? 100. * (f64) st->n_small_object_cache_hits / + (f64) st->n_small_object_cache_attempts : 0.), + h->small_object_cache.replacement_index); + + s = + format (s, + "\n%Ualloc. from free-list: %Ld attempts, %Ld hits (%.2f%%), %Ld considered (per-attempt %.2f)", + format_white_space, indent, st->free_list.n_search_attempts, + st->free_list.n_objects_found, + (st->free_list.n_search_attempts != + 0 ? 100. * (f64) st->free_list.n_objects_found / + (f64) st->free_list.n_search_attempts : 0.), + st->free_list.n_objects_searched, + (st->free_list.n_search_attempts != + 0 ? (f64) st->free_list.n_objects_searched / + (f64) st->free_list.n_search_attempts : 0.)); + + s = format (s, "\n%Ualloc. from vector-expand: %Ld", + format_white_space, indent, st->n_vector_expands); + + s = format (s, "\n%Uallocs: %Ld %.2f clocks/call", + format_white_space, indent, + st->n_gets, (f64) st->n_clocks_get / (f64) st->n_gets); + + s = format (s, "\n%Ufrees: %Ld %.2f clocks/call", + format_white_space, indent, + st->n_puts, (f64) st->n_clocks_put / (f64) st->n_puts); + + return s; +} + +u8 * +format_mheap (u8 * s, va_list * va) +{ + void *v = va_arg (*va, u8 *); + int verbose = va_arg (*va, int); + + mheap_t *h; + uword i, size, indent; + clib_mem_usage_t usage; + mheap_elt_t *first_corrupt; + + mheap_maybe_lock (v); + + h = mheap_header (v); + + mheap_usage_no_lock (v, &usage); + + indent = format_get_indent (s); + + s = + format (s, + "%d objects, %U of %U used, %U free, %U reclaimed, %U overhead", + usage.object_count, format_mheap_byte_count, usage.bytes_used, + format_mheap_byte_count, usage.bytes_total, + format_mheap_byte_count, usage.bytes_free, + format_mheap_byte_count, usage.bytes_free_reclaimed, + format_mheap_byte_count, usage.bytes_overhead); + + if (usage.bytes_max != ~0) + s = format (s, ", %U capacity", format_mheap_byte_count, usage.bytes_max); + + /* Show histogram of sizes. */ + if (verbose > 1) + { + uword hist[MHEAP_N_BINS]; + mheap_elt_t *e; + uword i, n_hist; + + memset (hist, 0, sizeof (hist)); + + n_hist = 0; + for (e = v; + e->n_user_data != MHEAP_N_USER_DATA_INVALID; + e = mheap_next_elt (e)) + { + uword n_user_data_bytes = mheap_elt_data_bytes (e); + uword bin = user_data_size_to_bin_index (n_user_data_bytes); + if (!e->is_free) + { + hist[bin] += 1; + n_hist += 1; + } + } + + s = format (s, "\n%U%=12s%=12s%=16s", + format_white_space, indent + 2, + "Size", "Count", "Fraction"); + + for (i = 0; i < ARRAY_LEN (hist); i++) + { + if (hist[i] == 0) + continue; + s = format (s, "\n%U%12d%12wd%16.4f", + format_white_space, indent + 2, + MHEAP_MIN_USER_DATA_BYTES + + i * MHEAP_USER_DATA_WORD_BYTES, hist[i], + (f64) hist[i] / (f64) n_hist); + } + } + + if (verbose) + s = format (s, "\n%U%U", + format_white_space, indent + 2, format_mheap_stats, h); + + if ((h->flags & MHEAP_FLAG_TRACE) && vec_len (h->trace_main.traces) > 0) + { + /* Make a copy of traces since we'll be sorting them. */ + mheap_trace_t *t, *traces_copy; + uword indent, total_objects_traced; + + traces_copy = vec_dup (h->trace_main.traces); + qsort (traces_copy, vec_len (traces_copy), sizeof (traces_copy[0]), + mheap_trace_sort); + + total_objects_traced = 0; + s = format (s, "\n"); + vec_foreach (t, traces_copy) + { + /* Skip over free elements. */ + if (t->n_allocations == 0) + continue; + + total_objects_traced += t->n_allocations; + + /* When not verbose only report allocations of more than 1k. */ + if (!verbose && t->n_bytes < 1024) + continue; + + if (t == traces_copy) + s = format (s, "%=9s%=9s %=10s Traceback\n", "Bytes", "Count", + "Sample"); + s = format (s, "%9d%9d %p", t->n_bytes, t->n_allocations, + t->offset + v); + indent = format_get_indent (s); + for (i = 0; i < ARRAY_LEN (t->callers) && t->callers[i]; i++) + { + if (i > 0) + s = format (s, "%U", format_white_space, indent); +#ifdef CLIB_UNIX + s = + format (s, " %U\n", format_clib_elf_symbol_with_address, + t->callers[i]); +#else + s = format (s, " %p\n", t->callers[i]); +#endif + } + } + + s = format (s, "%d total traced objects\n", total_objects_traced); + + vec_free (traces_copy); + } + + first_corrupt = mheap_first_corrupt (v); + if (first_corrupt) + { + size = mheap_elt_data_bytes (first_corrupt); + s = format (s, "\n first corrupt object: %p, size %wd\n %U", + first_corrupt, size, format_hex_bytes, first_corrupt, size); + } + + /* FIXME. This output could be wrong in the unlikely case that format + uses the same mheap as we are currently inspecting. */ + if (verbose > 1) + { + mheap_elt_t *e; + uword i, o; + + s = format (s, "\n"); + + e = mheap_elt_at_uoffset (v, 0); + i = 0; + while (1) + { + if ((i % 8) == 0) + s = format (s, "%8d: ", i); + + o = mheap_elt_uoffset (v, e); + + if (e->is_free) + s = format (s, "(%8d) ", o); + else + s = format (s, " %8d ", o); + + if ((i % 8) == 7 || (i + 1) >= h->n_elts) + s = format (s, "\n"); + } + } + + mheap_maybe_unlock (v); + + return s; +} + +void +dmh (void *v) +{ + fformat (stderr, "%U", format_mheap, v, 1); +} + +static void +mheap_validate_breakpoint () +{ + os_panic (); +} + +void +mheap_validate (void *v) +{ + mheap_t *h = mheap_header (v); + uword i, s; + + uword elt_count, elt_size; + uword free_count_from_free_lists, free_size_from_free_lists; + uword small_elt_free_count, small_elt_free_size; + +#define CHECK(x) if (! (x)) { mheap_validate_breakpoint (); os_panic (); } + + if (vec_len (v) == 0) + return; + + mheap_maybe_lock (v); + + /* Validate number of elements and size. */ + free_size_from_free_lists = free_count_from_free_lists = 0; + for (i = 0; i < ARRAY_LEN (h->first_free_elt_uoffset_by_bin); i++) + { + mheap_elt_t *e, *n; + uword is_first; + + CHECK ((h->first_free_elt_uoffset_by_bin[i] != MHEAP_GROUNDED) + == + ((h->non_empty_free_elt_heads[i / + BITS (uword)] & ((uword) 1 << + (uword) (i % + BITS + (uword)))) + != 0)); + + if (h->first_free_elt_uoffset_by_bin[i] == MHEAP_GROUNDED) + continue; + + e = mheap_elt_at_uoffset (v, h->first_free_elt_uoffset_by_bin[i]); + is_first = 1; + while (1) + { + uword s; + + n = mheap_next_elt (e); + + /* Object must be marked free. */ + CHECK (e->is_free); + + /* Next object's previous free bit must also be set. */ + CHECK (n->prev_is_free); + + if (is_first) + CHECK (e->free_elt.prev_uoffset == MHEAP_GROUNDED); + is_first = 0; + + s = mheap_elt_data_bytes (e); + CHECK (user_data_size_to_bin_index (s) == i); + + free_count_from_free_lists += 1; + free_size_from_free_lists += s; + + if (e->free_elt.next_uoffset == MHEAP_GROUNDED) + break; + + n = mheap_elt_at_uoffset (v, e->free_elt.next_uoffset); + + /* Check free element linkages. */ + CHECK (n->free_elt.prev_uoffset == mheap_elt_uoffset (v, e)); + + e = n; + } + } + + /* Go through small object cache. */ + small_elt_free_count = small_elt_free_size = 0; + for (i = 0; i < ARRAY_LEN (h->small_object_cache.bins.as_u8); i++) + { + if (h->small_object_cache.bins.as_u8[i] != 0) + { + mheap_elt_t *e; + uword b = h->small_object_cache.bins.as_u8[i] - 1; + uword o = h->small_object_cache.offsets[i]; + uword s; + + e = mheap_elt_at_uoffset (v, o); + + /* Object must be allocated. */ + CHECK (!e->is_free); + + s = mheap_elt_data_bytes (e); + CHECK (user_data_size_to_bin_index (s) == b); + + small_elt_free_count += 1; + small_elt_free_size += s; + } + } + + { + mheap_elt_t *e, *n; + uword elt_free_size, elt_free_count; + + elt_count = elt_size = elt_free_size = elt_free_count = 0; + for (e = v; e->n_user_data != MHEAP_N_USER_DATA_INVALID; e = n) + { + if (e->prev_n_user_data != MHEAP_N_USER_DATA_INVALID) + CHECK (e->prev_n_user_data * sizeof (e->user_data[0]) >= + MHEAP_MIN_USER_DATA_BYTES); + + CHECK (e->n_user_data * sizeof (e->user_data[0]) >= + MHEAP_MIN_USER_DATA_BYTES); + + n = mheap_next_elt (e); + + CHECK (e->is_free == n->prev_is_free); + + elt_count++; + s = mheap_elt_data_bytes (e); + elt_size += s; + + if (e->is_free) + { + elt_free_count++; + elt_free_size += s; + } + + /* Consecutive free objects should have been combined. */ + CHECK (!(e->prev_is_free && n->prev_is_free)); + } + + CHECK (free_count_from_free_lists == elt_free_count); + CHECK (free_size_from_free_lists == elt_free_size); + CHECK (elt_count == h->n_elts + elt_free_count + small_elt_free_count); + CHECK (elt_size + (elt_count + 1) * MHEAP_ELT_OVERHEAD_BYTES == + vec_len (v)); + } + + { + mheap_elt_t *e, *n; + + for (e = v; e->n_user_data == MHEAP_N_USER_DATA_INVALID; e = n) + { + n = mheap_next_elt (e); + CHECK (e->n_user_data == n->prev_n_user_data); + } + } + +#undef CHECK + + mheap_maybe_unlock (v); + + h->validate_serial += 1; +} + +static void +mheap_get_trace (void *v, uword offset, uword size) +{ + mheap_t *h; + mheap_trace_main_t *tm; + mheap_trace_t *t; + uword i, n_callers, trace_index, *p; + mheap_trace_t trace; + + /* Spurious Coverity warnings be gone. */ + memset (&trace, 0, sizeof (trace)); + + n_callers = clib_backtrace (trace.callers, ARRAY_LEN (trace.callers), + /* Skip mheap_get_aligned's frame */ 1); + if (n_callers == 0) + return; + + for (i = n_callers; i < ARRAY_LEN (trace.callers); i++) + trace.callers[i] = 0; + + h = mheap_header (v); + tm = &h->trace_main; + + if (!tm->trace_by_callers) + tm->trace_by_callers = + hash_create_mem (0, sizeof (trace.callers), sizeof (uword)); + + p = hash_get_mem (tm->trace_by_callers, &trace.callers); + if (p) + { + trace_index = p[0]; + t = tm->traces + trace_index; + } + else + { + i = vec_len (tm->trace_free_list); + if (i > 0) + { + trace_index = tm->trace_free_list[i - 1]; + _vec_len (tm->trace_free_list) = i - 1; + } + else + { + mheap_trace_t *old_start = tm->traces; + mheap_trace_t *old_end = vec_end (tm->traces); + + vec_add2 (tm->traces, t, 1); + + if (tm->traces != old_start) + { + hash_pair_t *p; + mheap_trace_t *q; + /* *INDENT-OFF* */ + hash_foreach_pair (p, tm->trace_by_callers, + ({ + q = uword_to_pointer (p->key, mheap_trace_t *); + ASSERT (q >= old_start && q < old_end); + p->key = pointer_to_uword (tm->traces + (q - old_start)); + })); + /* *INDENT-ON* */ + } + trace_index = t - tm->traces; + } + + t = tm->traces + trace_index; + t[0] = trace; + t->n_allocations = 0; + t->n_bytes = 0; + hash_set_mem (tm->trace_by_callers, t->callers, trace_index); + } + + t->n_allocations += 1; + t->n_bytes += size; + t->offset = offset; /* keep a sample to autopsy */ + hash_set (tm->trace_index_by_offset, offset, t - tm->traces); +} + +static void +mheap_put_trace (void *v, uword offset, uword size) +{ + mheap_t *h; + mheap_trace_main_t *tm; + mheap_trace_t *t; + uword trace_index, *p; + + h = mheap_header (v); + tm = &h->trace_main; + p = hash_get (tm->trace_index_by_offset, offset); + if (!p) + return; + + trace_index = p[0]; + hash_unset (tm->trace_index_by_offset, offset); + ASSERT (trace_index < vec_len (tm->traces)); + + t = tm->traces + trace_index; + ASSERT (t->n_allocations > 0); + ASSERT (t->n_bytes >= size); + t->n_allocations -= 1; + t->n_bytes -= size; + if (t->n_allocations == 0) + { + hash_unset_mem (tm->trace_by_callers, t->callers); + vec_add1 (tm->trace_free_list, trace_index); + memset (t, 0, sizeof (t[0])); + } +} + +static int +mheap_trace_sort (const void *_t1, const void *_t2) +{ + const mheap_trace_t *t1 = _t1; + const mheap_trace_t *t2 = _t2; + word cmp; + + cmp = (word) t2->n_bytes - (word) t1->n_bytes; + if (!cmp) + cmp = (word) t2->n_allocations - (word) t1->n_allocations; + return cmp; +} + +always_inline void +mheap_trace_main_free (mheap_trace_main_t * tm) +{ + vec_free (tm->traces); + vec_free (tm->trace_free_list); + hash_free (tm->trace_by_callers); + hash_free (tm->trace_index_by_offset); +} + +void +mheap_trace (void *v, int enable) +{ + mheap_t *h; + + h = mheap_header (v); + + if (enable) + { + h->flags |= MHEAP_FLAG_TRACE; + } + else + { + mheap_trace_main_free (&h->trace_main); + h->flags &= ~MHEAP_FLAG_TRACE; + } +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/mheap.h b/src/vppinfra/mheap.h new file mode 100644 index 00000000..5b7cdfba --- /dev/null +++ b/src/vppinfra/mheap.h @@ -0,0 +1,94 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_mheap_h +#define included_mheap_h + +#include <vppinfra/vec.h> +#include <vppinfra/error.h> /* clib_error_t */ +#include <vppinfra/mem.h> /* clib_mem_usage_t */ +#include <vppinfra/format.h> /* for unformat_input_t */ + +/* Allocate size bytes. New heap and offset are returned. + offset == ~0 means allocation failed. */ +always_inline void * +mheap_get (void *v, uword size, uword * offset_return) +{ + return mheap_get_aligned (v, size, 0, 0, offset_return); +} + +/* Create allocation heap of given size. + * The actual usable size is smaller than the requested size. + * memory_bytes must be greater than mheap_page_size + sizeof (mheap_t) + 16. + * Otherwise, allocation may fail and return 0. + */ +void *mheap_alloc (void *memory, uword memory_bytes); +void *mheap_alloc_with_flags (void *memory, uword memory_bytes, uword flags); + +#define mheap_free(v) (v) = _mheap_free(v) +void *_mheap_free (void *v); + +void mheap_foreach (void *v, + uword (*func) (void *arg, void *v, void *elt_data, + uword elt_size), void *arg); + +/* Format mheap data structures as string. */ +u8 *format_mheap (u8 * s, va_list * va); + +/* Validate internal consistency. */ +void mheap_validate (void *h); + +/* Query bytes used. */ +uword mheap_bytes (void *v); + +void mheap_usage (void *v, clib_mem_usage_t * usage); + +/* Enable disable traceing. */ +void mheap_trace (void *v, int enable); + +/* Test routine. */ +int test_mheap_main (unformat_input_t * input); + +#endif /* included_mheap_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/mheap_bootstrap.h b/src/vppinfra/mheap_bootstrap.h new file mode 100644 index 00000000..38f0ac84 --- /dev/null +++ b/src/vppinfra/mheap_bootstrap.h @@ -0,0 +1,374 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_mem_mheap_h +#define included_mem_mheap_h + +/* Bootstrap include so that #include <vppinfra/mem.h> can include e.g. + <vppinfra/mheap.h> which depends on <vppinfra/vec.h>. */ + +#include <vppinfra/vec_bootstrap.h> +#include <vppinfra/error_bootstrap.h> +#include <vppinfra/os.h> +#include <vppinfra/vector.h> + +/* Each element in heap is immediately followed by this struct. */ +typedef struct +{ + /* Number of mheap_size_t words of user data in previous object. + Used to find mheap_elt_t for previous object. */ +#if CLIB_VEC64 > 0 + u64 prev_n_user_data:63; + + /* Used to mark end/start of of doubly-linked list of mheap_elt_t's. */ +#define MHEAP_N_USER_DATA_INVALID (0x7fffffffffffffffULL) +#define MHEAP_GROUNDED (~0ULL) + + /* Set if previous object is free. */ + u64 prev_is_free:1; + + /* Number of mheap_size_t words of user data that follow this object. */ + u64 n_user_data:63; + + /* Set if this object is on free list (and therefore following free_elt + is valid). */ + u64 is_free:1; + +#else + u32 prev_n_user_data:31; + + /* Used to mark end/start of of doubly-linked list of mheap_elt_t's. */ +#define MHEAP_N_USER_DATA_INVALID (0x7fffffff) +#define MHEAP_GROUNDED (~0) + + /* Set if previous object is free. */ + u32 prev_is_free:1; + + /* Number of mheap_size_t words of user data that follow this object. */ + u32 n_user_data:31; + + /* Set if this object is on free list (and therefore following free_elt + is valid). */ + u32 is_free:1; +#endif + + union + { +#if CLIB_VEC64 > 0 + /* For allocated objects: user data follows. + User data is allocated in units of typeof (user_data[0]). */ + u64 user_data[0]; + + /* For free objects, offsets of next and previous free objects of this size; + ~0 means end of doubly-linked list. + This is stored in user data (guaranteed to be at least 8 bytes) + but only for *free* objects. */ + struct + { + u64 next_uoffset, prev_uoffset; + } free_elt; +#else + /* For allocated objects: user data follows. + User data is allocated in units of typeof (user_data[0]). */ + u32 user_data[0]; + + /* For free objects, offsets of next and previous free objects of this size; + ~0 means end of doubly-linked list. + This is stored in user data (guaranteed to be at least 8 bytes) + but only for *free* objects. */ + struct + { + u32 next_uoffset, prev_uoffset; + } free_elt; +#endif + }; +} mheap_elt_t; + +/* Number of bytes of "overhead": e.g. not user data. */ +#define MHEAP_ELT_OVERHEAD_BYTES (sizeof (mheap_elt_t) - STRUCT_OFFSET_OF (mheap_elt_t, user_data)) + +/* User objects must be large enough to hold 2 x u32 free offsets in free elt. */ +#define MHEAP_MIN_USER_DATA_BYTES MHEAP_ELT_OVERHEAD_BYTES + +/* Number of byte in user data "words". */ +#define MHEAP_USER_DATA_WORD_BYTES STRUCT_SIZE_OF (mheap_elt_t, user_data[0]) + +typedef struct +{ + /* Address of callers: outer first, inner last. */ + uword callers[12]; + + /* Count of allocations with this traceback. */ +#if CLIB_VEC64 > 0 + u64 n_allocations; +#else + u32 n_allocations; +#endif + + /* Count of bytes allocated with this traceback. */ + u32 n_bytes; + + /* Offset of this item */ + uword offset; +} mheap_trace_t; + +typedef struct +{ + mheap_trace_t *traces; + + /* Indices of free traces. */ + u32 *trace_free_list; + + /* Hash table mapping callers to trace index. */ + uword *trace_by_callers; + + /* Hash table mapping mheap offset to trace index. */ + uword *trace_index_by_offset; +} mheap_trace_main_t; + +/* Without vector instructions don't bother with small object cache. */ +#ifdef CLIB_HAVE_VEC128 +#define MHEAP_HAVE_SMALL_OBJECT_CACHE 1 +#else +#define MHEAP_HAVE_SMALL_OBJECT_CACHE 0 +#endif + + /* Small object bin i is for objects with + user_size > sizeof (mheap_elt_t) + sizeof (mheap_elt_t) * (i - 1) + user_size <= sizeof (mheap_elt_t) + sizeof (mheap_size_t) * i. */ +#if MHEAP_HAVE_SMALL_OBJECT_CACHE > 0 +#define MHEAP_LOG2_N_SMALL_OBJECT_BINS 8 +#define MHEAP_N_SMALL_OBJECT_BINS (1 << MHEAP_LOG2_N_SMALL_OBJECT_BINS) +#else +#define MHEAP_LOG2_N_SMALL_OBJECT_BINS 0 +#define MHEAP_N_SMALL_OBJECT_BINS 0 +#endif + +#define MHEAP_N_BINS \ + (MHEAP_N_SMALL_OBJECT_BINS \ + + (STRUCT_BITS_OF (mheap_elt_t, user_data[0]) - MHEAP_LOG2_N_SMALL_OBJECT_BINS)) + +typedef struct +{ + struct + { + u64 n_search_attempts; + u64 n_objects_searched; + u64 n_objects_found; + } free_list; + + u64 n_vector_expands; + + u64 n_small_object_cache_hits; + u64 n_small_object_cache_attempts; + + u64 n_gets, n_puts; + u64 n_clocks_get, n_clocks_put; +} mheap_stats_t; + +/* For objects with align == 4 and align_offset == 0 (e.g. vector strings). */ +typedef struct +{ + union + { +#ifdef CLIB_HAVE_VEC128 + u8x16 as_u8x16[BITS (uword) / 16]; +#endif + + /* Store bin + 1; zero means unused. */ + u8 as_u8[BITS (uword)]; + } bins; + + uword offsets[BITS (uword)]; + + u32 replacement_index; +} mheap_small_object_cache_t; + +/* Vec header for heaps. */ +typedef struct +{ + /* User offsets for head of doubly-linked list of free objects of this size. */ +#if CLIB_VEC64 > 0 + u64 first_free_elt_uoffset_by_bin[MHEAP_N_BINS]; +#else + u32 first_free_elt_uoffset_by_bin[MHEAP_N_BINS]; +#endif + + /* Bitmap of non-empty free list bins. */ + uword non_empty_free_elt_heads[(MHEAP_N_BINS + BITS (uword) - 1) / + BITS (uword)]; + + mheap_small_object_cache_t small_object_cache; + + u32 flags; +#define MHEAP_FLAG_TRACE (1 << 0) +#define MHEAP_FLAG_DISABLE_VM (1 << 1) +#define MHEAP_FLAG_THREAD_SAFE (1 << 2) +#define MHEAP_FLAG_SMALL_OBJECT_CACHE (1 << 3) +#define MHEAP_FLAG_VALIDATE (1 << 4) + + /* Lock use when MHEAP_FLAG_THREAD_SAFE is set. */ + volatile u32 lock; + volatile u32 owner_cpu; + int recursion_count; + + /* Number of allocated objects. */ + u64 n_elts; + + /* Maximum size (in bytes) this heap is allowed to grow to. + Set to ~0 to grow heap (via vec_resize) arbitrarily. */ + u64 max_size; + + uword vm_alloc_offset_from_header; + uword vm_alloc_size; + + /* Each successful mheap_validate call increments this serial number. + Used to debug heap corruption problems. GDB breakpoints can be + made conditional on validate_serial. */ + u64 validate_serial; + + mheap_trace_main_t trace_main; + + mheap_stats_t stats; +} mheap_t; + +always_inline mheap_t * +mheap_header (u8 * v) +{ + return vec_aligned_header (v, sizeof (mheap_t), 16); +} + +always_inline u8 * +mheap_vector (mheap_t * h) +{ + return vec_aligned_header_end (h, sizeof (mheap_t), 16); +} + +always_inline uword +mheap_elt_uoffset (void *v, mheap_elt_t * e) +{ + return (uword) e->user_data - (uword) v; +} + +always_inline mheap_elt_t * +mheap_user_pointer_to_elt (void *v) +{ + return v - STRUCT_OFFSET_OF (mheap_elt_t, user_data); +} + +/* For debugging we keep track of offsets for valid objects. + We make sure user is not trying to free object with invalid offset. */ +always_inline uword +mheap_offset_is_valid (void *v, uword uo) +{ + return uo >= MHEAP_ELT_OVERHEAD_BYTES && uo <= vec_len (v); +} + +always_inline mheap_elt_t * +mheap_elt_at_uoffset (void *v, uword uo) +{ + ASSERT (mheap_offset_is_valid (v, uo)); + return (mheap_elt_t *) (v + uo - STRUCT_OFFSET_OF (mheap_elt_t, user_data)); +} + +always_inline void * +mheap_elt_data (void *v, mheap_elt_t * e) +{ + return v + mheap_elt_uoffset (v, e); +} + +always_inline uword +mheap_elt_data_bytes (mheap_elt_t * e) +{ + return e->n_user_data * sizeof (e->user_data[0]); +} + +always_inline uword +mheap_data_bytes (void *v, uword uo) +{ + mheap_elt_t *e = mheap_elt_at_uoffset (v, uo); + return mheap_elt_data_bytes (e); +} + +#define mheap_len(v,d) (mheap_data_bytes((v),(void *) (d) - (void *) (v)) / sizeof ((d)[0])) + +always_inline mheap_elt_t * +mheap_next_elt (mheap_elt_t * e) +{ + ASSERT (e->n_user_data < MHEAP_N_USER_DATA_INVALID); + return (mheap_elt_t *) (e->user_data + e->n_user_data); +} + +always_inline mheap_elt_t * +mheap_prev_elt (mheap_elt_t * e) +{ + ASSERT (e->prev_n_user_data < MHEAP_N_USER_DATA_INVALID); + return ((void *) e + - e->prev_n_user_data * sizeof (e->user_data[0]) + - MHEAP_ELT_OVERHEAD_BYTES); +} + +/* Exported operations. */ + +always_inline uword +mheap_elts (void *v) +{ + return v ? mheap_header (v)->n_elts : 0; +} + +always_inline uword +mheap_max_size (void *v) +{ + return v ? mheap_header (v)->max_size : ~0; +} + +/* Free previously allocated offset. */ +void mheap_put (void *v, uword offset); + +/* Allocate object from mheap. */ +void *mheap_get_aligned (void *v, uword size, uword align, uword align_offset, + uword * offset_return); + +#endif /* included_mem_mheap_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/mod_test_hash.c b/src/vppinfra/mod_test_hash.c new file mode 100644 index 00000000..b3fa676d --- /dev/null +++ b/src/vppinfra/mod_test_hash.c @@ -0,0 +1,27 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vppinfra/linux_kernel_init.h> +#include <vppinfra/hash.h> + +CLIB_LINUX_KERNEL_MODULE ("test_hash", test_hash_main, + /* kernel-thread flags */ 0 & CLONE_KERNEL); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/os.h b/src/vppinfra/os.h new file mode 100644 index 00000000..33300716 --- /dev/null +++ b/src/vppinfra/os.h @@ -0,0 +1,88 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001-2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_os_h +#define included_os_h + +#include <vppinfra/clib.h> +#include <vppinfra/types.h> + +/* External panic function. */ +void os_panic (void); + +/* External exit function analagous to unix exit. */ +void os_exit (int code); + +/* External function to print a line. */ +void os_puts (u8 * string, uword length, uword is_error); + +/* External function to handle out of memory. */ +void os_out_of_memory (void); + +/* Estimate, measure or divine CPU timestamp clock frequency. */ +f64 os_cpu_clock_frequency (void); + +extern __thread uword __os_thread_index; + +static_always_inline uword +os_get_thread_index (void) +{ + return __os_thread_index; +} + +static_always_inline uword +os_get_cpu_number (void) __attribute__ ((deprecated)); + +static_always_inline uword +os_get_cpu_number (void) +{ + return __os_thread_index; +} + +uword os_get_nthreads (void); + +#include <vppinfra/smp.h> + +#endif /* included_os_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/pfhash.c b/src/vppinfra/pfhash.c new file mode 100644 index 00000000..3b9fa8f3 --- /dev/null +++ b/src/vppinfra/pfhash.c @@ -0,0 +1,689 @@ +/* + Copyright (c) 2013 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#include <vppinfra/pfhash.h> +#include <vppinfra/format.h> + +/* This is incredibly handy when debugging */ +u32 vl (void *v) __attribute__ ((weak)); +u32 +vl (void *v) +{ + return vec_len (v); +} + +#if defined(CLIB_HAVE_VEC128) && ! defined (__ALTIVEC__) + +typedef struct +{ + u8 *key[16]; + u64 value; +} pfhash_show_t; + +static int +sh_compare (pfhash_show_t * sh0, pfhash_show_t * sh1) +{ + return ((i32) (sh0->value) - ((i32) sh1->value)); +} + +u8 * +format_pfhash (u8 * s, va_list * args) +{ + pfhash_t *p = va_arg (*args, pfhash_t *); + int verbose = va_arg (*args, int); + + if (p == 0 || p->overflow_hash == 0 || p->buckets == 0) + { + s = format (s, "*** uninitialized ***"); + return s; + } + + s = format (s, "Prefetch hash '%s'\n", p->name); + s = + format (s, " %d buckets, %u bucket overflows, %.1f%% bucket overflow \n", + vec_len (p->buckets), p->overflow_count, + 100.0 * ((f64) p->overflow_count) / ((f64) vec_len (p->buckets))); + if (p->nitems) + s = + format (s, + " %u items, %u items in overflow, %.1f%% items in overflow\n", + p->nitems, p->nitems_in_overflow, + 100.0 * ((f64) p->nitems_in_overflow) / ((f64) p->nitems)); + + if (verbose) + { + pfhash_show_t *shs = 0, *sh; + hash_pair_t *hp; + int i, j; + + for (i = 0; i < vec_len (p->buckets); i++) + { + pfhash_kv_t *kv; + pfhash_kv_16_t *kv16; + pfhash_kv_8_t *kv8; + pfhash_kv_8v8_t *kv8v8; + pfhash_kv_4_t *kv4; + + if (p->buckets[i] == 0 || p->buckets[i] == PFHASH_BUCKET_OVERFLOW) + continue; + + kv = pool_elt_at_index (p->kvp, p->buckets[i]); + + switch (p->key_size) + { + case 16: + kv16 = &kv->kv16; + for (j = 0; j < 3; j++) + { + if (kv16->values[j] != (u32) ~ 0) + { + vec_add2 (shs, sh, 1); + clib_memcpy (sh->key, &kv16->kb.k_u32x4[j], + p->key_size); + sh->value = kv16->values[j]; + } + } + break; + case 8: + if (p->value_size == 4) + { + kv8 = &kv->kv8; + for (j = 0; j < 5; j++) + { + if (kv8->values[j] != (u32) ~ 0) + { + vec_add2 (shs, sh, 1); + clib_memcpy (sh->key, &kv8->kb.k_u64[j], + p->key_size); + sh->value = kv8->values[j]; + } + } + } + else + { + kv8v8 = &kv->kv8v8; + for (j = 0; j < 4; j++) + { + if (kv8v8->values[j] != (u64) ~ 0) + { + vec_add2 (shs, sh, 1); + clib_memcpy (sh->key, &kv8v8->kb.k_u64[j], + p->key_size); + sh->value = kv8v8->values[j]; + } + } + + } + break; + case 4: + kv4 = &kv->kv4; + for (j = 0; j < 8; j++) + { + if (kv4->values[j] != (u32) ~ 0) + { + vec_add2 (shs, sh, 1); + clib_memcpy (sh->key, &kv4->kb.kb[j], p->key_size); + sh->value = kv4->values[j]; + } + } + break; + } + } + + /* *INDENT-OFF* */ + hash_foreach_pair (hp, p->overflow_hash, + ({ + vec_add2 (shs, sh, 1); + clib_memcpy (sh->key, (u8 *)hp->key, p->key_size); + sh->value = hp->value[0]; + })); + /* *INDENT-ON* */ + + vec_sort_with_function (shs, sh_compare); + + for (i = 0; i < vec_len (shs); i++) + { + sh = vec_elt_at_index (shs, i); + s = format (s, " %U value %u\n", format_hex_bytes, sh->key, + p->key_size, sh->value); + } + vec_free (shs); + } + return s; +} + + +void abort (void); + +void +pfhash_init (pfhash_t * p, char *name, u32 key_size, u32 value_size, + u32 nbuckets) +{ + pfhash_kv_t *kv; + memset (p, 0, sizeof (*p)); + u32 key_bytes; + + switch (key_size) + { + case 4: + key_bytes = 4; + break; + case 8: + key_bytes = 8; + break; + case 16: + key_bytes = 16; + break; + default: + ASSERT (0); + abort (); + } + + switch (value_size) + { + case 4: + case 8: + break; + default: + ASSERT (0); + abort (); + } + + + p->name = format (0, "%s", name); + vec_add1 (p->name, 0); + p->overflow_hash = hash_create_mem (0, key_bytes, sizeof (uword)); + + nbuckets = 1 << (max_log2 (nbuckets)); + + /* This sets the entire bucket array to zero */ + vec_validate (p->buckets, nbuckets - 1); + p->key_size = key_size; + p->value_size = value_size; + + /* + * Unset buckets implicitly point at the 0th pool elt. + * All search routines will return ~0 if they go there. + */ + pool_get_aligned (p->kvp, kv, 16); + memset (kv, 0xff, sizeof (*kv)); +} + +static pfhash_kv_16_t * +pfhash_get_kv_16 (pfhash_t * p, u32 bucket_contents, + u32x4 * key, u32 * match_index) +{ + u32x4 diff[3]; + u32 is_equal[3]; + pfhash_kv_16_t *kv = 0; + + *match_index = (u32) ~ 0; + + kv = &p->kvp[bucket_contents].kv16; + + diff[0] = u32x4_sub (kv->kb.k_u32x4[0], key[0]); + diff[1] = u32x4_sub (kv->kb.k_u32x4[1], key[0]); + diff[2] = u32x4_sub (kv->kb.k_u32x4[2], key[0]); + + is_equal[0] = u32x4_zero_byte_mask (diff[0]) == 0xffff; + is_equal[1] = u32x4_zero_byte_mask (diff[1]) == 0xffff; + is_equal[2] = u32x4_zero_byte_mask (diff[2]) == 0xffff; + + if (is_equal[0]) + *match_index = 0; + if (is_equal[1]) + *match_index = 1; + if (is_equal[2]) + *match_index = 2; + + return kv; +} + +static pfhash_kv_8_t * +pfhash_get_kv_8 (pfhash_t * p, u32 bucket_contents, + u64 * key, u32 * match_index) +{ + pfhash_kv_8_t *kv; + + *match_index = (u32) ~ 0; + + kv = &p->kvp[bucket_contents].kv8; + + if (kv->kb.k_u64[0] == key[0]) + *match_index = 0; + if (kv->kb.k_u64[1] == key[0]) + *match_index = 1; + if (kv->kb.k_u64[2] == key[0]) + *match_index = 2; + if (kv->kb.k_u64[3] == key[0]) + *match_index = 3; + if (kv->kb.k_u64[4] == key[0]) + *match_index = 4; + + return kv; +} + +static pfhash_kv_8v8_t * +pfhash_get_kv_8v8 (pfhash_t * p, + u32 bucket_contents, u64 * key, u32 * match_index) +{ + pfhash_kv_8v8_t *kv; + + *match_index = (u32) ~ 0; + + kv = &p->kvp[bucket_contents].kv8v8; + + if (kv->kb.k_u64[0] == key[0]) + *match_index = 0; + if (kv->kb.k_u64[1] == key[0]) + *match_index = 1; + if (kv->kb.k_u64[2] == key[0]) + *match_index = 2; + if (kv->kb.k_u64[3] == key[0]) + *match_index = 3; + + return kv; +} + +static pfhash_kv_4_t * +pfhash_get_kv_4 (pfhash_t * p, u32 bucket_contents, + u32 * key, u32 * match_index) +{ + u32x4 vector_key; + u32x4 is_equal[2]; + u32 zbm[2], winner_index; + pfhash_kv_4_t *kv; + + *match_index = (u32) ~ 0; + + kv = &p->kvp[bucket_contents].kv4; + + vector_key = u32x4_splat (key[0]); + + is_equal[0] = u32x4_is_equal (kv->kb.k_u32x4[0], vector_key); + is_equal[1] = u32x4_is_equal (kv->kb.k_u32x4[1], vector_key); + zbm[0] = ~u32x4_zero_byte_mask (is_equal[0]) & 0xFFFF; + zbm[1] = ~u32x4_zero_byte_mask (is_equal[1]) & 0xFFFF; + + if (PREDICT_FALSE ((zbm[0] == 0) && (zbm[1] == 0))) + return kv; + + winner_index = min_log2 (zbm[0]) >> 2; + winner_index = zbm[1] ? (4 + (min_log2 (zbm[1]) >> 2)) : winner_index; + + *match_index = winner_index; + return kv; +} + +static pfhash_kv_t * +pfhash_get_internal (pfhash_t * p, u32 bucket_contents, + void *key, u32 * match_index) +{ + pfhash_kv_t *kv = 0; + + switch (p->key_size) + { + case 16: + kv = + (pfhash_kv_t *) pfhash_get_kv_16 (p, bucket_contents, key, + match_index); + break; + case 8: + if (p->value_size == 4) + kv = (pfhash_kv_t *) pfhash_get_kv_8 (p, bucket_contents, + key, match_index); + else + kv = (pfhash_kv_t *) pfhash_get_kv_8v8 (p, bucket_contents, + key, match_index); + break; + case 4: + kv = + (pfhash_kv_t *) pfhash_get_kv_4 (p, bucket_contents, key, + match_index); + break; + default: + ASSERT (0); + } + return kv; +} + +u64 +pfhash_get (pfhash_t * p, u32 bucket, void *key) +{ + pfhash_kv_t *kv; + u32 match_index = ~0; + pfhash_kv_16_t *kv16; + pfhash_kv_8_t *kv8; + pfhash_kv_8v8_t *kv8v8; + pfhash_kv_4_t *kv4; + + u32 bucket_contents = pfhash_read_bucket_prefetch_kv (p, bucket); + + if (bucket_contents == PFHASH_BUCKET_OVERFLOW) + { + uword *hp; + + hp = hash_get_mem (p->overflow_hash, key); + if (hp) + return hp[0]; + return (u64) ~ 0; + } + + kv = pfhash_get_internal (p, bucket_contents, key, &match_index); + if (match_index == (u32) ~ 0) + return (u64) ~ 0; + + kv16 = (void *) kv; + kv8 = (void *) kv; + kv4 = (void *) kv; + kv8v8 = (void *) kv; + + switch (p->key_size) + { + case 16: + return (kv16->values[match_index] == (u32) ~ 0) + ? (u64) ~ 0 : (u64) kv16->values[match_index]; + case 8: + if (p->value_size == 4) + return (kv8->values[match_index] == (u32) ~ 0) + ? (u64) ~ 0 : (u64) kv8->values[match_index]; + else + return kv8v8->values[match_index]; + case 4: + return (kv4->values[match_index] == (u32) ~ 0) + ? (u64) ~ 0 : (u64) kv4->values[match_index]; + default: + ASSERT (0); + } + return (u64) ~ 0; +} + +void +pfhash_set (pfhash_t * p, u32 bucket, void *key, void *value) +{ + u32 bucket_contents = pfhash_read_bucket_prefetch_kv (p, bucket); + u32 match_index = (u32) ~ 0; + pfhash_kv_t *kv; + pfhash_kv_16_t *kv16; + pfhash_kv_8_t *kv8; + pfhash_kv_8v8_t *kv8v8; + pfhash_kv_4_t *kv4; + int i; + u8 *kcopy; + + if (bucket_contents == PFHASH_BUCKET_OVERFLOW) + { + hash_pair_t *hp; + hp = hash_get_pair_mem (p->overflow_hash, key); + if (hp) + { + clib_warning ("replace value 0x%08x with value 0x%08x", + hp->value[0], (u64) value); + hp->value[0] = (u64) value; + return; + } + kcopy = clib_mem_alloc (p->key_size); + clib_memcpy (kcopy, key, p->key_size); + hash_set_mem (p->overflow_hash, kcopy, value); + p->nitems++; + p->nitems_in_overflow++; + return; + } + + if (bucket_contents == 0) + { + pool_get_aligned (p->kvp, kv, 16); + memset (kv, 0xff, sizeof (*kv)); + p->buckets[bucket] = kv - p->kvp; + } + else + kv = pfhash_get_internal (p, bucket_contents, key, &match_index); + + kv16 = (void *) kv; + kv8 = (void *) kv; + kv8v8 = (void *) kv; + kv4 = (void *) kv; + + p->nitems++; + + if (match_index != (u32) ~ 0) + { + switch (p->key_size) + { + case 16: + kv16->values[match_index] = (u32) (u64) value; + return; + + case 8: + if (p->value_size == 4) + kv8->values[match_index] = (u32) (u64) value; + else + kv8v8->values[match_index] = (u64) value; + return; + + case 4: + kv4->values[match_index] = (u64) value; + return; + + default: + ASSERT (0); + } + } + + switch (p->key_size) + { + case 16: + for (i = 0; i < 3; i++) + { + if (kv16->values[i] == (u32) ~ 0) + { + clib_memcpy (&kv16->kb.k_u32x4[i], key, p->key_size); + kv16->values[i] = (u32) (u64) value; + return; + } + } + /* copy bucket contents to overflow hash tbl */ + for (i = 0; i < 3; i++) + { + kcopy = clib_mem_alloc (p->key_size); + clib_memcpy (kcopy, &kv16->kb.k_u32x4[i], p->key_size); + hash_set_mem (p->overflow_hash, kcopy, kv16->values[i]); + p->nitems_in_overflow++; + } + /* Add new key to overflow */ + kcopy = clib_mem_alloc (p->key_size); + clib_memcpy (kcopy, key, p->key_size); + hash_set_mem (p->overflow_hash, kcopy, value); + p->buckets[bucket] = PFHASH_BUCKET_OVERFLOW; + p->overflow_count++; + p->nitems_in_overflow++; + return; + + case 8: + if (p->value_size == 4) + { + for (i = 0; i < 5; i++) + { + if (kv8->values[i] == (u32) ~ 0) + { + clib_memcpy (&kv8->kb.k_u64[i], key, 8); + kv8->values[i] = (u32) (u64) value; + return; + } + } + /* copy bucket contents to overflow hash tbl */ + for (i = 0; i < 5; i++) + { + kcopy = clib_mem_alloc (p->key_size); + clib_memcpy (kcopy, &kv8->kb.k_u64[i], 8); + hash_set_mem (p->overflow_hash, kcopy, kv8->values[i]); + p->nitems_in_overflow++; + } + } + else + { + for (i = 0; i < 4; i++) + { + if (kv8v8->values[i] == (u64) ~ 0) + { + clib_memcpy (&kv8v8->kb.k_u64[i], key, 8); + kv8v8->values[i] = (u64) value; + return; + } + } + /* copy bucket contents to overflow hash tbl */ + for (i = 0; i < 4; i++) + { + kcopy = clib_mem_alloc (p->key_size); + clib_memcpy (kcopy, &kv8v8->kb.k_u64[i], 8); + hash_set_mem (p->overflow_hash, kcopy, kv8v8->values[i]); + p->nitems_in_overflow++; + } + + } + /* Add new key to overflow */ + kcopy = clib_mem_alloc (p->key_size); + clib_memcpy (kcopy, key, p->key_size); + hash_set_mem (p->overflow_hash, kcopy, value); + p->buckets[bucket] = PFHASH_BUCKET_OVERFLOW; + p->overflow_count++; + p->nitems_in_overflow++; + return; + + case 4: + for (i = 0; i < 8; i++) + { + if (kv4->values[i] == (u32) ~ 0) + { + clib_memcpy (&kv4->kb.kb[i], key, 4); + kv4->values[i] = (u32) (u64) value; + return; + } + } + /* copy bucket contents to overflow hash tbl */ + for (i = 0; i < 8; i++) + { + kcopy = clib_mem_alloc (p->key_size); + clib_memcpy (kcopy, &kv4->kb.kb[i], 4); + hash_set_mem (p->overflow_hash, kcopy, kv4->values[i]); + p->nitems_in_overflow++; + } + /* Add new key to overflow */ + kcopy = clib_mem_alloc (p->key_size); + clib_memcpy (kcopy, key, p->key_size); + hash_set_mem (p->overflow_hash, kcopy, value); + p->buckets[bucket] = PFHASH_BUCKET_OVERFLOW; + p->overflow_count++; + p->nitems_in_overflow++; + return; + + default: + ASSERT (0); + } +} + +void +pfhash_unset (pfhash_t * p, u32 bucket, void *key) +{ + u32 bucket_contents = pfhash_read_bucket_prefetch_kv (p, bucket); + u32 match_index = (u32) ~ 0; + pfhash_kv_t *kv; + pfhash_kv_16_t *kv16; + pfhash_kv_8_t *kv8; + pfhash_kv_8v8_t *kv8v8; + pfhash_kv_4_t *kv4; + void *oldkey; + + if (bucket_contents == PFHASH_BUCKET_OVERFLOW) + { + hash_pair_t *hp; + hp = hash_get_pair_mem (p->overflow_hash, key); + if (hp) + { + oldkey = (void *) hp->key; + hash_unset_mem (p->overflow_hash, key); + clib_mem_free (oldkey); + p->nitems--; + p->nitems_in_overflow--; + } + return; + } + + kv = pfhash_get_internal (p, bucket_contents, key, &match_index); + if (match_index == (u32) ~ 0) + return; + + p->nitems--; + + kv16 = (void *) kv; + kv8 = (void *) kv; + kv8v8 = (void *) kv; + kv4 = (void *) kv; + + switch (p->key_size) + { + case 16: + kv16->values[match_index] = (u32) ~ 0; + return; + + case 8: + if (p->value_size == 4) + kv8->values[match_index] = (u32) ~ 0; + else + kv8v8->values[match_index] = (u64) ~ 0; + return; + + case 4: + kv4->values[match_index] = (u32) ~ 0; + return; + + default: + ASSERT (0); + } +} + +void +pfhash_free (pfhash_t * p) +{ + hash_pair_t *hp; + int i; + u8 **keys = 0; + + vec_free (p->name); + + pool_free (p->kvp); + + /* *INDENT-OFF* */ + hash_foreach_pair (hp, p->overflow_hash, + ({ + vec_add1 (keys, (u8 *)hp->key); + })); + /* *INDENT-ON* */ + hash_free (p->overflow_hash); + for (i = 0; i < vec_len (keys); i++) + vec_free (keys[i]); + vec_free (keys); +} + +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/pfhash.h b/src/vppinfra/pfhash.h new file mode 100644 index 00000000..e054c668 --- /dev/null +++ b/src/vppinfra/pfhash.h @@ -0,0 +1,276 @@ +/* + Copyright (c) 2013 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#ifndef included_clib_pfhash_h +#define included_clib_pfhash_h + + +#include <vppinfra/clib.h> +#include <vppinfra/hash.h> +#include <vppinfra/pool.h> + +#if defined(CLIB_HAVE_VEC128) && ! defined (__ALTIVEC__) + +typedef struct +{ + /* 3 x 16 = 48 key bytes */ + union + { + u32x4 k_u32x4[3]; + u64 k_u64[6]; + } kb; + /* 3 x 4 = 12 value bytes */ + u32 values[3]; + u32 pad; +} pfhash_kv_16_t; + +typedef struct +{ + /* 5 x 8 = 40 key bytes */ + union + { + u64 k_u64[5]; + } kb; + + /* 5 x 4 = 20 value bytes */ + u32 values[5]; + u32 pad; +} pfhash_kv_8_t; + +typedef struct +{ + /* 4 x 8 = 32 key bytes */ + union + { + u64 k_u64[4]; + } kb; + + /* 4 x 8 = 32 value bytes */ + u64 values[4]; +} pfhash_kv_8v8_t; + +typedef struct +{ + /* 8 x 4 = 32 key bytes */ + union + { + u32x4 k_u32x4[2]; + u32 kb[8]; + } kb; + + /* 8 x 4 = 32 value bytes */ + u32 values[8]; +} pfhash_kv_4_t; + +typedef union +{ + pfhash_kv_16_t kv16; + pfhash_kv_8_t kv8; + pfhash_kv_8v8_t kv8v8; + pfhash_kv_4_t kv4; +} pfhash_kv_t; + +typedef struct +{ + /* Bucket vector */ + u32 *buckets; +#define PFHASH_BUCKET_OVERFLOW (u32)~0 + + /* Pool of key/value pairs */ + pfhash_kv_t *kvp; + + /* overflow plain-o-hash */ + uword *overflow_hash; + + /* Pretty-print name */ + u8 *name; + + u32 key_size; + u32 value_size; + + u32 overflow_count; + u32 nitems; + u32 nitems_in_overflow; +} pfhash_t; + +void pfhash_init (pfhash_t * p, char *name, u32 key_size, u32 value_size, + u32 nbuckets); +void pfhash_free (pfhash_t * p); +u64 pfhash_get (pfhash_t * p, u32 bucket, void *key); +void pfhash_set (pfhash_t * p, u32 bucket, void *key, void *value); +void pfhash_unset (pfhash_t * p, u32 bucket, void *key); + +format_function_t format_pfhash; + +static inline void +pfhash_prefetch_bucket (pfhash_t * p, u32 bucket) +{ + CLIB_PREFETCH (&p->buckets[bucket], CLIB_CACHE_LINE_BYTES, LOAD); +} + +static inline u32 +pfhash_read_bucket_prefetch_kv (pfhash_t * p, u32 bucket) +{ + u32 bucket_contents = p->buckets[bucket]; + if (PREDICT_TRUE ((bucket_contents & PFHASH_BUCKET_OVERFLOW) == 0)) + CLIB_PREFETCH (&p->kvp[bucket_contents], CLIB_CACHE_LINE_BYTES, LOAD); + return bucket_contents; +} + +/* + * pfhash_search_kv_16 + * See if the supplied 16-byte key matches one of three 16-byte (key,value) pairs. + * Return the indicated value, or ~0 if no match + * + * Note: including the overflow test, the fast path is 35 instrs + * on x86_64. Elves will steal your keyboard in the middle of the night if + * you "improve" it without checking the generated code! + */ +static inline u32 +pfhash_search_kv_16 (pfhash_t * p, u32 bucket_contents, u32x4 * key) +{ + u32x4 diff0, diff1, diff2; + u32 is_equal0, is_equal1, is_equal2; + u32 no_match; + pfhash_kv_16_t *kv; + u32 rv; + + if (PREDICT_FALSE (bucket_contents == PFHASH_BUCKET_OVERFLOW)) + { + uword *hp; + hp = hash_get_mem (p->overflow_hash, key); + if (hp) + return hp[0]; + return (u32) ~ 0; + } + + kv = &p->kvp[bucket_contents].kv16; + + diff0 = u32x4_sub (kv->kb.k_u32x4[0], key[0]); + diff1 = u32x4_sub (kv->kb.k_u32x4[1], key[0]); + diff2 = u32x4_sub (kv->kb.k_u32x4[2], key[0]); + + no_match = is_equal0 = (i16) u32x4_zero_byte_mask (diff0); + is_equal1 = (i16) u32x4_zero_byte_mask (diff1); + no_match |= is_equal1; + is_equal2 = (i16) u32x4_zero_byte_mask (diff2); + no_match |= is_equal2; + /* If any of the three items matched, no_match will be zero after this line */ + no_match = ~no_match; + + rv = (is_equal0 & kv->values[0]) + | (is_equal1 & kv->values[1]) | (is_equal2 & kv->values[2]) | no_match; + + return rv; +} + +static inline u32 +pfhash_search_kv_8 (pfhash_t * p, u32 bucket_contents, u64 * key) +{ + pfhash_kv_8_t *kv; + u32 rv = (u32) ~ 0; + + if (PREDICT_FALSE (bucket_contents == PFHASH_BUCKET_OVERFLOW)) + { + uword *hp; + hp = hash_get_mem (p->overflow_hash, key); + if (hp) + return hp[0]; + return (u32) ~ 0; + } + + kv = &p->kvp[bucket_contents].kv8; + + rv = (kv->kb.k_u64[0] == key[0]) ? kv->values[0] : rv; + rv = (kv->kb.k_u64[1] == key[0]) ? kv->values[1] : rv; + rv = (kv->kb.k_u64[2] == key[0]) ? kv->values[2] : rv; + rv = (kv->kb.k_u64[3] == key[0]) ? kv->values[3] : rv; + rv = (kv->kb.k_u64[4] == key[0]) ? kv->values[4] : rv; + + return rv; +} + +static inline u64 +pfhash_search_kv_8v8 (pfhash_t * p, u32 bucket_contents, u64 * key) +{ + pfhash_kv_8v8_t *kv; + u64 rv = (u64) ~ 0; + + if (PREDICT_FALSE (bucket_contents == PFHASH_BUCKET_OVERFLOW)) + { + uword *hp; + hp = hash_get_mem (p->overflow_hash, key); + if (hp) + return hp[0]; + return (u64) ~ 0; + } + + kv = &p->kvp[bucket_contents].kv8v8; + + rv = (kv->kb.k_u64[0] == key[0]) ? kv->values[0] : rv; + rv = (kv->kb.k_u64[1] == key[0]) ? kv->values[1] : rv; + rv = (kv->kb.k_u64[2] == key[0]) ? kv->values[2] : rv; + rv = (kv->kb.k_u64[3] == key[0]) ? kv->values[3] : rv; + + return rv; +} + +static inline u32 +pfhash_search_kv_4 (pfhash_t * p, u32 bucket_contents, u32 * key) +{ + u32x4 vector_key; + u32x4 is_equal[2]; + u32 zbm[2], winner_index; + pfhash_kv_4_t *kv; + + if (PREDICT_FALSE (bucket_contents == PFHASH_BUCKET_OVERFLOW)) + { + uword *hp; + hp = hash_get_mem (p->overflow_hash, key); + if (hp) + return hp[0]; + return (u32) ~ 0; + } + + kv = &p->kvp[bucket_contents].kv4; + + vector_key = u32x4_splat (key[0]); + + is_equal[0] = u32x4_is_equal (kv->kb.k_u32x4[0], vector_key); + is_equal[1] = u32x4_is_equal (kv->kb.k_u32x4[1], vector_key); + zbm[0] = ~u32x4_zero_byte_mask (is_equal[0]) & 0xFFFF; + zbm[1] = ~u32x4_zero_byte_mask (is_equal[1]) & 0xFFFF; + + if (PREDICT_FALSE ((zbm[0] == 0) && (zbm[1] == 0))) + return (u32) ~ 0; + + winner_index = min_log2 (zbm[0]) >> 2; + winner_index = zbm[1] ? (4 + (min_log2 (zbm[1]) >> 2)) : winner_index; + + return kv->values[winner_index]; +} + +#endif /* CLIB_HAVE_VEC128 */ + +#endif /* included_clib_pfhash_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/phash.c b/src/vppinfra/phash.c new file mode 100644 index 00000000..14da5225 --- /dev/null +++ b/src/vppinfra/phash.c @@ -0,0 +1,1017 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +/* This is all stolen from Bob Jenkins and reworked for clib. Thanks + once again Bob for the great work. */ + +/* +------------------------------------------------------------------------------ +perfect.c: code to generate code for a hash for perfect hashing. +(c) Bob Jenkins, September 1996, December 1999 +You may use this code in any way you wish, and it is free. No warranty. +I hereby place this in the public domain. +Source is http://burtleburtle.net/bob/c/perfect.c + +This generates a minimal perfect hash function. That means, given a +set of n keys, this determines a hash function that maps each of +those keys into a value in 0..n-1 with no collisions. + +The perfect hash function first uses a normal hash function on the key +to determine (a,b) such that the pair (a,b) is distinct for all +keys, then it computes a^scramble[tab[b]] to get the final perfect hash. +tab[] is an array of 1-byte values and scramble[] is a 256-term array of +2-byte or 4-byte values. If there are n keys, the length of tab[] is a +power of two between n/3 and n. + +I found the idea of computing distinct (a,b) values in "Practical minimal +perfect hash functions for large databases", Fox, Heath, Chen, and Daoud, +Communications of the ACM, January 1992. They found the idea in Chichelli +(CACM Jan 1980). Beyond that, our methods differ. + +The key is hashed to a pair (a,b) where a in 0..*alen*-1 and b in +0..*blen*-1. A fast hash function determines both a and b +simultaneously. Any decent hash function is likely to produce +hashes so that (a,b) is distinct for all pairs. I try the hash +using different values of *salt* until all pairs are distinct. + +The final hash is (a XOR scramble[tab[b]]). *scramble* is a +predetermined mapping of 0..255 into 0..smax-1. *tab* is an +array that we fill in in such a way as to make the hash perfect. + +First we fill in all values of *tab* that are used by more than one +key. We try all possible values for each position until one works. + +This leaves m unmapped keys and m values that something could hash to. +If you treat unmapped keys as lefthand nodes and unused hash values +as righthand nodes, and draw a line connecting each key to each hash +value it could map to, you get a bipartite graph. We attempt to +find a perfect matching in this graph. If we succeed, we have +determined a perfect hash for the whole set of keys. + +*scramble* is used because (a^tab[i]) clusters keys around *a*. +------------------------------------------------------------------------------ +*/ + +#include <vppinfra/bitmap.h> +#include <vppinfra/format.h> +#include <vppinfra/phash.h> +#include <vppinfra/random.h> + +static void +init_keys_direct_u32 (phash_main_t * pm) +{ + int n_keys_left, b_mask, a_shift; + u32 seed; + phash_key_t *k; + + seed = pm->hash_seed; + b_mask = (1 << pm->b_bits) - 1; + a_shift = BITS (seed) - pm->a_bits; + + k = pm->keys; + n_keys_left = vec_len (pm->keys); + + while (n_keys_left >= 2) + { + u32 x0, y0, z0; + u32 x1, y1, z1; + + x0 = y0 = z0 = seed; + x1 = y1 = z1 = seed; + x0 += (u32) k[0].key; + x1 += (u32) k[1].key; + + hash_mix32 (x0, y0, z0); + hash_mix32 (x1, y1, z1); + + k[0].b = z0 & b_mask; + k[1].b = z1 & b_mask; + k[0].a = z0 >> a_shift; + k[1].a = z1 >> a_shift; + if (PREDICT_FALSE (a_shift >= BITS (z0))) + k[0].a = k[1].a = 0; + + k += 2; + n_keys_left -= 2; + } + + if (n_keys_left >= 1) + { + u32 x0, y0, z0; + + x0 = y0 = z0 = seed; + x0 += k[0].key; + + hash_mix32 (x0, y0, z0); + + k[0].b = z0 & b_mask; + k[0].a = z0 >> a_shift; + if (PREDICT_FALSE (a_shift >= BITS (z0))) + k[0].a = 0; + + k += 1; + n_keys_left -= 1; + } +} + +static void +init_keys_direct_u64 (phash_main_t * pm) +{ + int n_keys_left, b_mask, a_shift; + u64 seed; + phash_key_t *k; + + seed = pm->hash_seed; + b_mask = (1 << pm->b_bits) - 1; + a_shift = BITS (seed) - pm->a_bits; + + k = pm->keys; + n_keys_left = vec_len (pm->keys); + + while (n_keys_left >= 2) + { + u64 x0, y0, z0; + u64 x1, y1, z1; + + x0 = y0 = z0 = seed; + x1 = y1 = z1 = seed; + x0 += (u64) k[0].key; + x1 += (u64) k[1].key; + + hash_mix64 (x0, y0, z0); + hash_mix64 (x1, y1, z1); + + k[0].b = z0 & b_mask; + k[1].b = z1 & b_mask; + k[0].a = z0 >> a_shift; + k[1].a = z1 >> a_shift; + if (PREDICT_FALSE (a_shift >= BITS (z0))) + k[0].a = k[1].a = 0; + + k += 2; + n_keys_left -= 2; + } + + if (n_keys_left >= 1) + { + u64 x0, y0, z0; + + x0 = y0 = z0 = seed; + x0 += k[0].key; + + hash_mix64 (x0, y0, z0); + + k[0].b = z0 & b_mask; + k[0].a = z0 >> a_shift; + if (PREDICT_FALSE (a_shift >= BITS (z0))) + k[0].a = 0; + + k += 1; + n_keys_left -= 1; + } +} + +static void +init_keys_indirect_u32 (phash_main_t * pm) +{ + int n_keys_left, b_mask, a_shift; + u32 seed; + phash_key_t *k; + + seed = pm->hash_seed; + b_mask = (1 << pm->b_bits) - 1; + a_shift = BITS (seed) - pm->a_bits; + + k = pm->keys; + n_keys_left = vec_len (pm->keys); + + while (n_keys_left >= 2) + { + u32 xyz[6]; + u32 x0, y0, z0; + u32 x1, y1, z1; + + pm->key_seed2 (pm->private, k[0].key, k[1].key, &xyz); + + x0 = y0 = z0 = seed; + x1 = y1 = z1 = seed; + x0 += xyz[0]; + y0 += xyz[1]; + z0 += xyz[2]; + x1 += xyz[3]; + y1 += xyz[4]; + z1 += xyz[5]; + + hash_mix32 (x0, y0, z0); + hash_mix32 (x1, y1, z1); + + k[0].b = z0 & b_mask; + k[1].b = z1 & b_mask; + k[0].a = z0 >> a_shift; + k[1].a = z1 >> a_shift; + if (PREDICT_FALSE (a_shift >= BITS (z0))) + k[0].a = k[1].a = 0; + + k += 2; + n_keys_left -= 2; + } + + if (n_keys_left >= 1) + { + u32 xyz[3]; + u32 x0, y0, z0; + + pm->key_seed1 (pm->private, k[0].key, &xyz); + + x0 = y0 = z0 = seed; + x0 += xyz[0]; + y0 += xyz[1]; + z0 += xyz[2]; + + hash_mix32 (x0, y0, z0); + + k[0].b = z0 & b_mask; + k[0].a = z0 >> a_shift; + if (PREDICT_FALSE (a_shift >= BITS (z0))) + k[0].a = 0; + + k += 1; + n_keys_left -= 1; + } +} + +static void +init_keys_indirect_u64 (phash_main_t * pm) +{ + int n_keys_left, b_mask, a_shift; + u64 seed; + phash_key_t *k; + + seed = pm->hash_seed; + b_mask = (1 << pm->b_bits) - 1; + a_shift = BITS (seed) - pm->a_bits; + + k = pm->keys; + n_keys_left = vec_len (pm->keys); + + while (n_keys_left >= 2) + { + u64 xyz[6]; + u64 x0, y0, z0; + u64 x1, y1, z1; + + pm->key_seed2 (pm->private, k[0].key, k[1].key, &xyz); + + x0 = y0 = z0 = seed; + x1 = y1 = z1 = seed; + x0 += xyz[0]; + y0 += xyz[1]; + z0 += xyz[2]; + x1 += xyz[3]; + y1 += xyz[4]; + z1 += xyz[5]; + + hash_mix64 (x0, y0, z0); + hash_mix64 (x1, y1, z1); + + k[0].b = z0 & b_mask; + k[1].b = z1 & b_mask; + k[0].a = z0 >> a_shift; + k[1].a = z1 >> a_shift; + if (PREDICT_FALSE (a_shift >= BITS (z0))) + k[0].a = k[1].a = 0; + + k += 2; + n_keys_left -= 2; + } + + if (n_keys_left >= 1) + { + u64 xyz[3]; + u64 x0, y0, z0; + + pm->key_seed1 (pm->private, k[0].key, &xyz); + + x0 = y0 = z0 = seed; + x0 += xyz[0]; + y0 += xyz[1]; + z0 += xyz[2]; + + hash_mix64 (x0, y0, z0); + + k[0].b = z0 & b_mask; + k[0].a = z0 >> a_shift; + if (PREDICT_FALSE (a_shift >= BITS (z0))) + k[0].a = 0; + + k += 1; + n_keys_left -= 1; + } +} + +/* + * insert keys into table according to key->b + * check if the initial hash might work + */ +static int +init_tabb (phash_main_t * pm) +{ + int no_collisions; + phash_tabb_t *tb; + phash_key_t *k, *l; + + if (pm->key_seed1) + { + if (pm->flags & PHASH_FLAG_MIX64) + init_keys_indirect_u64 (pm); + else + init_keys_indirect_u32 (pm); + } + else + { + if (pm->flags & PHASH_FLAG_MIX64) + init_keys_direct_u64 (pm); + else + init_keys_direct_u32 (pm); + } + + if (!pm->tabb) + vec_resize (pm->tabb, 1 << pm->b_bits); + else + vec_foreach (tb, pm->tabb) phash_tabb_free (tb); + + /* Two keys with the same (a,b) guarantees a collision */ + no_collisions = 1; + vec_foreach (k, pm->keys) + { + u32 i, *ki; + + tb = pm->tabb + k->b; + ki = tb->keys; + for (i = 0; i < vec_len (ki); i++) + { + l = pm->keys + ki[i]; + if (k->a == l->a) + { + /* Given keys are supposed to be unique. */ + if (pm->key_is_equal + && pm->key_is_equal (pm->private, l->key, k->key)) + clib_error ("duplicate keys"); + no_collisions = 0; + goto done; + } + } + + vec_add1 (tb->keys, k - pm->keys); + } + +done: + return no_collisions; +} + +/* Try to apply an augmenting list */ +static int +apply (phash_main_t * pm, u32 tail, u32 rollback) +{ + phash_key_t *k; + phash_tabb_t *pb; + phash_tabq_t *q_child, *q_parent; + u32 ki, i, hash, child, parent; + u32 stabb; /* scramble[tab[b]] */ + int no_collision; + + no_collision = 1; + + /* Walk from child to parent until root is reached. */ + for (child = tail - 1; child; child = parent) + { + q_child = &pm->tabq[child]; + parent = q_child->parent_q; + q_parent = &pm->tabq[parent]; + + /* find parent's list of siblings */ + ASSERT (q_parent->b_q < vec_len (pm->tabb)); + pb = pm->tabb + q_parent->b_q; + + /* erase old hash values */ + stabb = pm->scramble[pb->val_b]; + for (i = 0; i < vec_len (pb->keys); i++) + { + ki = pb->keys[i]; + k = pm->keys + ki; + hash = k->a ^ stabb; + + /* Erase hash for all of child's siblings. */ + if (ki == pm->tabh[hash]) + pm->tabh[hash] = ~0; + } + + /* change pb->val_b, which will change the hashes of all parent siblings */ + pb->val_b = rollback ? q_child->oldval_q : q_child->newval_q; + + /* set new hash values */ + stabb = pm->scramble[pb->val_b]; + for (i = 0; i < vec_len (pb->keys); i++) + { + ki = pb->keys[i]; + k = pm->keys + ki; + + hash = k->a ^ stabb; + if (rollback) + { + if (parent == 0) + continue; /* root never had a hash */ + } + else if (pm->tabh[hash] != ~0) + { + /* Very rare case: roll back any changes. */ + apply (pm, tail, /* rollback changes */ 1); + no_collision = 0; + goto done; + } + pm->tabh[hash] = ki; + } + } + +done: + return no_collision; +} + + +/* +------------------------------------------------------------------------------- +augment(): Add item to the mapping. + +Construct a spanning tree of *b*s with *item* as root, where each +parent can have all its hashes changed (by some new val_b) with +at most one collision, and each child is the b of that collision. + +I got this from Tarjan's "Data Structures and Network Algorithms". The +path from *item* to a *b* that can be remapped with no collision is +an "augmenting path". Change values of tab[b] along the path so that +the unmapped key gets mapped and the unused hash value gets used. + +Assuming 1 key per b, if m out of n hash values are still unused, +you should expect the transitive closure to cover n/m nodes before +an unused node is found. Sum(i=1..n)(n/i) is about nlogn, so expect +this approach to take about nlogn time to map all single-key b's. +------------------------------------------------------------------------------- + +high_water: a value higher than any now in tabb[].water_b. +*/ +static int +augment (phash_main_t * pm, u32 b_root, u32 high_water) +{ + u32 q; /* current position walking through the queue */ + u32 tail; /* tail of the queue. 0 is the head of the queue. */ + phash_tabb_t *tb_parent, *tb_child, *tb_hit; + phash_key_t *k_parent, *k_child; + u32 v, v_limit; /* possible value for myb->val_b */ + u32 i, ki, hash; + + v_limit = + 1 << ((pm->flags & PHASH_FLAG_USE_SCRAMBLE) ? pm->s_bits : BITS (u8)); + + /* Initialize the root of the spanning tree. */ + pm->tabq[0].b_q = b_root; + tail = 1; + + /* construct the spanning tree by walking the queue, add children to tail */ + for (q = 0; q < tail; q++) + { + if ((pm->flags & PHASH_FLAG_FAST_MODE) + && !(pm->flags & PHASH_FLAG_MINIMAL) && q == 1) + break; /* don't do transitive closure */ + + tb_parent = pm->tabb + pm->tabq[q].b_q; /* the b for this node */ + + for (v = 0; v < v_limit; v++) + { + tb_child = 0; + + for (i = 0; i < vec_len (tb_parent->keys); i++) + { + ki = tb_parent->keys[i]; + k_parent = pm->keys + ki; + + hash = k_parent->a ^ pm->scramble[v]; + if (hash >= pm->hash_max) + goto try_next_v; /* hash code out of bounds => we can't use this v */ + + ki = pm->tabh[hash]; + if (ki == ~0) + continue; + + k_child = pm->keys + ki; + tb_hit = pm->tabb + k_child->b; + + if (tb_child) + { + /* Hit at most one child b. */ + if (tb_child == tb_hit) + goto try_next_v; + } + else + { + /* Remember this as child b. */ + tb_child = tb_hit; + if (tb_hit->water_b == high_water) + goto try_next_v; /* already explored */ + } + } + + /* tb_parent with v has either one or zero collisions. */ + + /* add childb to the queue of reachable things */ + if (tb_child) + tb_child->water_b = high_water; + pm->tabq[tail].b_q = tb_child ? tb_child - pm->tabb : ~0; + pm->tabq[tail].newval_q = v; /* how to make parent (myb) use this hash */ + pm->tabq[tail].oldval_q = tb_parent->val_b; /* need this for rollback */ + pm->tabq[tail].parent_q = q; + ++tail; + + /* Found a v with no collisions? */ + if (!tb_child) + { + /* Try to apply the augmenting path. */ + if (apply (pm, tail, /* rollback */ 0)) + return 1; /* success, item was added to the perfect hash */ + --tail; /* don't know how to handle such a child! */ + } + + try_next_v: + ; + } + } + return 0; +} + + +static phash_tabb_t *sort_tabb; + +static int +phash_tabb_compare (void *a1, void *a2) +{ + u32 *b1 = a1; + u32 *b2 = a2; + phash_tabb_t *tb1, *tb2; + + tb1 = sort_tabb + b1[0]; + tb2 = sort_tabb + b2[0]; + + return ((int) vec_len (tb2->keys) - (int) vec_len (tb1->keys)); +} + +/* find a mapping that makes this a perfect hash */ +static int +perfect (phash_main_t * pm) +{ + u32 i; + + /* clear any state from previous attempts */ + if (vec_bytes (pm->tabh)) + memset (pm->tabh, ~0, vec_bytes (pm->tabh)); + + vec_validate (pm->tabb_sort, vec_len (pm->tabb) - 1); + for (i = 0; i < vec_len (pm->tabb_sort); i++) + pm->tabb_sort[i] = i; + + sort_tabb = pm->tabb; + + vec_sort_with_function (pm->tabb_sort, phash_tabb_compare); + + /* In descending order by number of keys, map all *b*s */ + for (i = 0; i < vec_len (pm->tabb_sort); i++) + { + if (!augment (pm, pm->tabb_sort[i], i + 1)) + return 0; + } + + /* Success! We found a perfect hash of all keys into 0..nkeys-1. */ + return 1; +} + + +/* + * Find initial a_bits = log2 (a_max), b_bits = log2 (b_max). + * Initial a_max and b_max values were found empirically. Some factors: + * + * If s_max<256 there is no scramble, so tab[b] needs to cover 0..s_max-1. + * + * a_max and b_max must be powers of 2 because the values in 0..a_max-1 and + * 0..b_max-1 are produced by applying a bitmask to the initial hash function. + * + * a_max must be less than s_max, in fact less than n_keys, because otherwise + * there would often be no i such that a^scramble[i] is in 0..n_keys-1 for + * all the *a*s associated with a given *b*, so there would be no legal + * value to assign to tab[b]. This only matters when we're doing a minimal + * perfect hash. + * + * It takes around 800 trials to find distinct (a,b) with nkey=s_max*(5/8) + * and a_max*b_max = s_max*s_max/32. + * + * Values of b_max less than s_max/4 never work, and s_max/2 always works. + * + * We want b_max as small as possible because it is the number of bytes in + * the huge array we must create for the perfect hash. + * + * When nkey <= s_max*(5/8), b_max=s_max/4 works much more often with + * a_max=s_max/8 than with a_max=s_max/4. Above s_max*(5/8), b_max=s_max/4 + * doesn't seem to care whether a_max=s_max/8 or a_max=s_max/4. I think it + * has something to do with 5/8 = 1/8 * 5. For example examine 80000, + * 85000, and 90000 keys with different values of a_max. This only matters + * if we're doing a minimal perfect hash. + * + * When a_max*b_max <= 1<<U32BITS, the initial hash must produce one integer. + * Bigger than that it must produce two integers, which increases the + * cost of the hash per character hashed. + */ +static void +guess_initial_parameters (phash_main_t * pm) +{ + u32 s_bits, s_max, a_max, b_max, n_keys; + int is_minimal, is_fast_mode; + const u32 b_max_use_scramble_threshold = 4096; + + is_minimal = (pm->flags & PHASH_FLAG_MINIMAL) != 0; + is_fast_mode = (pm->flags & PHASH_FLAG_FAST_MODE) != 0; + + n_keys = vec_len (pm->keys); + s_bits = max_log2 (n_keys); + s_max = 1 << s_bits; + a_max = 0; + + if (is_minimal) + { + switch (s_bits) + { + case 0: + a_max = 1; + b_max = 1; + case 1: + case 2: + case 3: + case 4: + case 5: + case 6: + case 7: + case 8: + /* + * Was: a_max = is_minimal ? s_max / 2 : s_max; + * However, we know that is_minimal must be true, so the + * if-arm of the ternary expression is always executed. + */ + a_max = s_max / 2; + b_max = s_max / 2; + break; + case 9: + case 10: + case 11: + case 12: + case 13: + case 14: + case 15: + case 16: + case 17: + if (is_fast_mode) + { + a_max = s_max / 2; + b_max = s_max / 4; + } + else if (s_max / 4 < b_max_use_scramble_threshold) + { + if (n_keys <= s_max * 0.52) + a_max = b_max = s_max / 8; + else + a_max = b_max = s_max / 4; + } + else + { + a_max = ((n_keys <= s_max * (5.0 / 8.0)) ? s_max / 8 : + (n_keys <= + s_max * (3.0 / 4.0)) ? s_max / 4 : s_max / 2); + b_max = s_max / 4; /* always give the small size a shot */ + } + break; + case 18: + if (is_fast_mode) + a_max = b_max = s_max / 2; + else + { + a_max = s_max / 8; /* never require the multiword hash */ + b_max = (n_keys <= s_max * (5.0 / 8.0)) ? s_max / 4 : s_max / 2; + } + break; + case 19: + case 20: + a_max = (n_keys <= s_max * (5.0 / 8.0)) ? s_max / 8 : s_max / 2; + b_max = (n_keys <= s_max * (5.0 / 8.0)) ? s_max / 4 : s_max / 2; + break; + default: + /* Just find a hash as quick as possible. + We'll be thrashing virtual memory at this size. */ + a_max = b_max = s_max / 2; + break; + } + } + else + { + /* Non-minimal perfect hash. */ + if (is_fast_mode && n_keys > s_max * 0.8) + { + s_max *= 2; + s_bits += 1; + } + + if (s_max / 4 <= (1 << 14)) + b_max = ((n_keys <= s_max * 0.56) ? s_max / 32 : + (n_keys <= s_max * 0.74) ? s_max / 16 : s_max / 8); + else + b_max = ((n_keys <= s_max * 0.6) ? s_max / 16 : + (n_keys <= s_max * 0.8) ? s_max / 8 : s_max / 4); + + if (is_fast_mode && b_max < s_max / 8) + b_max = s_max / 8; + + if (a_max < 1) + a_max = 1; + if (b_max < 1) + b_max = 1; + } + + ASSERT (s_max == (1 << s_bits)); + ASSERT (is_pow2 (a_max)); + ASSERT (is_pow2 (b_max)); + pm->s_bits = s_bits; + pm->a_bits = min_log2 (a_max); + pm->b_bits = min_log2 (b_max); + if (b_max >= b_max_use_scramble_threshold) + pm->flags |= PHASH_FLAG_USE_SCRAMBLE; +} + +/* compute p(x), where p is a permutation of 0..(1<<nbits)-1 */ +/* permute(0)=0. This is intended and useful. */ +always_inline u32 +scramble_permute (u32 x, u32 nbits) +{ + int i; + int mask = (1 << nbits) - 1; + int const2 = 1 + nbits / 2; + int const3 = 1 + nbits / 3; + int const4 = 1 + nbits / 4; + int const5 = 1 + nbits / 5; + for (i = 0; i < 20; i++) + { + x = (x + (x << const2)) & mask; + x = (x ^ (x >> const3)); + x = (x + (x << const4)) & mask; + x = (x ^ (x >> const5)); + } + return x; +} + +/* initialize scramble[] with distinct random values in 0..smax-1 */ +static void +scramble_init (phash_main_t * pm) +{ + u32 i; + + /* fill scramble[] with distinct random integers in 0..smax-1 */ + vec_validate (pm->scramble, (1 << (pm->s_bits < 8 ? 8 : pm->s_bits)) - 1); + for (i = 0; i < vec_len (pm->scramble); i++) + pm->scramble[i] = scramble_permute (i, pm->s_bits); +} + +/* Try to find a perfect hash function. */ +clib_error_t * +phash_find_perfect_hash (phash_main_t * pm) +{ + clib_error_t *error = 0; + u32 max_a_bits, n_tries_this_a_b, want_minimal; + + /* guess initial values for s_max, a_max and b_max */ + guess_initial_parameters (pm); + + want_minimal = pm->flags & PHASH_FLAG_MINIMAL; + +new_s: + if (pm->b_bits == 0) + pm->a_bits = pm->s_bits; + + max_a_bits = pm->s_bits - want_minimal; + if (max_a_bits < 1) + max_a_bits = 1; + + pm->hash_max = want_minimal ? vec_len (pm->keys) : (1 << pm->s_bits); + + scramble_init (pm); + + /* Allocate working memory. */ + vec_free (pm->tabh); + vec_validate_init_empty (pm->tabh, pm->hash_max - 1, ~0); + vec_free (pm->tabq); + vec_validate (pm->tabq, 1 << pm->b_bits); + + /* Actually find the perfect hash */ + n_tries_this_a_b = 0; + while (1) + { + /* Choose random hash seeds until keys become unique. */ + pm->hash_seed = random_u64 (&pm->random_seed); + pm->n_seed_trials++; + if (init_tabb (pm)) + { + /* Found unique (A, B). */ + + /* Hash may already be perfect. */ + if (pm->b_bits == 0) + goto done; + + pm->n_perfect_calls++; + if (perfect (pm)) + goto done; + + goto increase_b; + } + + /* Keep trying with different seed value. */ + n_tries_this_a_b++; + if (n_tries_this_a_b < 2048) + continue; + + /* Try to put more bits in (A,B) to make distinct (A,B) more likely */ + if (pm->a_bits < max_a_bits) + pm->a_bits++; + else if (pm->b_bits < pm->s_bits) + { + increase_b: + vec_resize (pm->tabb, vec_len (pm->tabb)); + vec_resize (pm->tabq, vec_len (pm->tabq)); + pm->b_bits++; + } + else + { + /* Can't increase (A, B) any more, so try increasing S. */ + goto new_s; + } + } + +done: + /* Construct mapping table for hash lookups. */ + if (!error) + { + u32 b, v; + + pm->a_shift = ((pm->flags & PHASH_FLAG_MIX64) ? 64 : 32) - pm->a_bits; + pm->b_mask = (1 << pm->b_bits) - 1; + + vec_resize (pm->tab, vec_len (pm->tabb)); + for (b = 0; b < vec_len (pm->tabb); b++) + { + v = pm->tabb[b].val_b; + + /* Apply scramble now for small enough value of b_bits. */ + if (!(pm->flags & PHASH_FLAG_USE_SCRAMBLE)) + v = pm->scramble[v]; + + pm->tab[b] = v; + } + } + + /* Free working memory. */ + phash_main_free_working_memory (pm); + + return error; +} + +/* Slow hash computation for general keys. */ +uword +phash_hash_slow (phash_main_t * pm, uword key) +{ + u32 a, b, v; + + if (pm->flags & PHASH_FLAG_MIX64) + { + u64 x0, y0, z0; + + x0 = y0 = z0 = pm->hash_seed; + + if (pm->key_seed1) + { + u64 xyz[3]; + pm->key_seed1 (pm->private, key, &xyz); + x0 += xyz[0]; + y0 += xyz[1]; + z0 += xyz[2]; + } + else + x0 += key; + + hash_mix64 (x0, y0, z0); + + a = z0 >> pm->a_shift; + b = z0 & pm->b_mask; + } + else + { + u32 x0, y0, z0; + + x0 = y0 = z0 = pm->hash_seed; + + if (pm->key_seed1) + { + u32 xyz[3]; + pm->key_seed1 (pm->private, key, &xyz); + x0 += xyz[0]; + y0 += xyz[1]; + z0 += xyz[2]; + } + else + x0 += key; + + hash_mix32 (x0, y0, z0); + + a = z0 >> pm->a_shift; + b = z0 & pm->b_mask; + } + + v = pm->tab[b]; + if (pm->flags & PHASH_FLAG_USE_SCRAMBLE) + v = pm->scramble[v]; + return a ^ v; +} + +/* Verify that perfect hash is perfect. */ +clib_error_t * +phash_validate (phash_main_t * pm) +{ + phash_key_t *k; + uword *unique_bitmap = 0; + clib_error_t *error = 0; + + vec_foreach (k, pm->keys) + { + uword h = phash_hash_slow (pm, k->key); + + if (h >= pm->hash_max) + { + error = clib_error_return (0, "hash out of range %wd", h); + goto done; + } + + if (clib_bitmap_get (unique_bitmap, h)) + { + error = clib_error_return (0, "hash non-unique"); + goto done; + } + + unique_bitmap = clib_bitmap_ori (unique_bitmap, h); + } + +done: + clib_bitmap_free (unique_bitmap); + return error; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/phash.h b/src/vppinfra/phash.h new file mode 100644 index 00000000..746a0fdd --- /dev/null +++ b/src/vppinfra/phash.h @@ -0,0 +1,194 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_phash_h +#define included_phash_h + +#include <vppinfra/hash.h> /* for Bob's mixing functions */ + +typedef struct +{ + /* Maybe either pointer to vector or inline word. */ + uword key; + + /* Hash code (A, B). */ + u32 a, b; +} phash_key_t; + +/* Table indexed by B. */ +typedef struct +{ + /* Vector of key indices with this same value of B. */ + u32 *keys; + + /* hash=a^tabb[b].val_b */ + u32 val_b; + + /* High watermark of who has visited this map node. */ + u32 water_b; +} phash_tabb_t; + +always_inline void +phash_tabb_free (phash_tabb_t * b) +{ + vec_free (b->keys); + b->val_b = b->water_b = 0; +} + +typedef struct +{ + /* b that currently occupies this hash */ + u32 b_q; + + /* Queue position of parent that could use this hash. */ + u32 parent_q; + + /* What to change parent tab[b] to use this hash. */ + u32 newval_q; + + /* Original value of tab[b]. */ + u32 oldval_q; +} phash_tabq_t; + +typedef struct +{ + u8 a_bits, b_bits, s_bits, a_shift; + u32 b_mask; + u32 *tab; + u32 *scramble; + + /* Seed value for hash mixer. */ + u64 hash_seed; + + u32 flags; + + /* Key functions want 64 bit keys. + Use hash_mix64 rather than hash_mix32. */ +#define PHASH_FLAG_MIX64 (1 << 0) +#define PHASH_FLAG_MIX32 (0 << 0) + + /* When b_bits is large enough (>= 12) we scramble. */ +#define PHASH_FLAG_USE_SCRAMBLE (1 << 1) + + /* Slow mode gives smaller tables but at the expense of more run time. */ +#define PHASH_FLAG_SLOW_MODE (0 << 2) +#define PHASH_FLAG_FAST_MODE (1 << 2) + + /* Generate minimal perfect hash instead of perfect hash. */ +#define PHASH_FLAG_NON_MINIMAL (0 << 3) +#define PHASH_FLAG_MINIMAL (1 << 3) + + /* vec_len (keys) for minimal hash; + 1 << s_bits for non-minimal hash. */ + u32 hash_max; + + /* Vector of keys. */ + phash_key_t *keys; + + /* Used by callbacks to identify keys. */ + void *private; + + /* Key comparison callback. */ + int (*key_is_equal) (void *private, uword key1, uword key2); + + /* Callback to reduce single key -> hash seeds. */ + void (*key_seed1) (void *private, uword key, void *seed); + + /* Callback to reduce two key2 -> hash seeds. */ + void (*key_seed2) (void *private, uword key1, uword key2, void *seed); + + /* Stuff used to compute perfect hash. */ + u32 random_seed; + + /* Stuff indexed by B. */ + phash_tabb_t *tabb; + + /* Table of B ordered by number of keys in tabb[b]. */ + u32 *tabb_sort; + + /* Unique key (or ~0 if none) for a given hash + H = A ^ scramble[tab[B].val_b]. */ + u32 *tabh; + + /* Stuff indexed by q. */ + phash_tabq_t *tabq; + + /* Stats. */ + u32 n_seed_trials, n_perfect_calls; +} phash_main_t; + +always_inline void +phash_main_free_working_memory (phash_main_t * pm) +{ + vec_free (pm->tabb); + vec_free (pm->tabq); + vec_free (pm->tabh); + vec_free (pm->tabb_sort); + if (!(pm->flags & PHASH_FLAG_USE_SCRAMBLE)) + vec_free (pm->scramble); +} + +always_inline void +phash_main_free (phash_main_t * pm) +{ + phash_main_free_working_memory (pm); + vec_free (pm->tab); + vec_free (pm->keys); + memset (pm, 0, sizeof (pm[0])); +} + +/* Slow hash computation for general keys. */ +uword phash_hash_slow (phash_main_t * pm, uword key); + +/* Main routine to compute perfect hash. */ +clib_error_t *phash_find_perfect_hash (phash_main_t * pm); + +/* Validates that hash is indeed perfect. */ +clib_error_t *phash_validate (phash_main_t * pm); + +/* Unit test. */ +int phash_test_main (unformat_input_t * input); + +#endif /* included_phash_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/pipeline.h b/src/vppinfra/pipeline.h new file mode 100644 index 00000000..5a9799b4 --- /dev/null +++ b/src/vppinfra/pipeline.h @@ -0,0 +1,176 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + * pipeline.h: software pipeline infrastructure + * + * Copyright (c) 2010 Eliot Dresselhaus + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef included_clib_pipeline_h +#define included_clib_pipeline_h + +#define clib_pipeline_stage(F,TYPE,ARG,I,BODY) \ + always_inline void F##_inline (void * _, u32 I) \ + { TYPE ARG = _; { BODY; } } \ + never_inline void F##_no_inline (TYPE ARG, u32 I) \ + { F##_inline (ARG, I); } + +#define clib_pipeline_stage_static(F,TYPE,ARG,I,BODY) \ + static_always_inline void F##_inline (void * _, u32 I) \ + { TYPE ARG = _; { BODY; } } \ + never_inline void F##_no_inline (TYPE ARG, u32 I) \ + { F##_inline (ARG, I); } + +#define clib_pipeline_stage_no_inline(F,TYPE,ARG,I,BODY) \ + never_inline void F##_no_inline (void * _, u32 I) \ + { TYPE ARG = _; { BODY; } } \ + never_inline void F##_inline (TYPE ARG, u32 I) \ + { F##_no_inline (ARG, I); } + +#define _clib_pipeline_var(v) _clib_pipeline_##v + +#define clib_pipeline_stage_execute(F,A,I,S) \ + F##_##S (A, _clib_pipeline_var(i) - (I)) + +#define clib_pipeline_main_stage(F,A,I) \ + clib_pipeline_stage_execute (F, A, I, inline) +#define clib_pipeline_init_stage(F,A,I) \ + if (_clib_pipeline_var(i) >= (I)) clib_pipeline_stage_execute (F, A, I, no_inline) +#define clib_pipeline_exit_stage(F,A,I) \ + if (_clib_pipeline_var(i) >= (I) && _clib_pipeline_var(i) - (I) < _clib_pipeline_var(n_vectors)) \ + clib_pipeline_stage_execute (F, A, I, no_inline) + +#define clib_pipeline_init_loop \ + for (_clib_pipeline_var(i) = 0; \ + _clib_pipeline_var(i) < \ + clib_min (_clib_pipeline_var(n_stages) - 1, \ + _clib_pipeline_var(n_vectors)); \ + _clib_pipeline_var(i)++) + +#define clib_pipeline_main_loop \ + for (; _clib_pipeline_var(i) < _clib_pipeline_var(n_vectors); \ + _clib_pipeline_var(i)++) + +#define clib_pipeline_exit_loop \ + for (; _clib_pipeline_var(i) < (_clib_pipeline_var(n_vectors) \ + + _clib_pipeline_var(n_stages) - 1); \ + _clib_pipeline_var(i)++) + +#define clib_pipeline_run_2_stage(N,ARG,STAGE0,STAGE1) \ +do { \ + uword _clib_pipeline_var(n_vectors) = (N); \ + uword _clib_pipeline_var(n_stages) = 2; \ + uword _clib_pipeline_var(i); \ + \ + clib_pipeline_init_loop \ + { \ + clib_pipeline_init_stage (STAGE0, ARG, 0); \ + } \ + \ + clib_pipeline_main_loop \ + { \ + clib_pipeline_main_stage (STAGE0, ARG, 0); \ + clib_pipeline_main_stage (STAGE1, ARG, 1); \ + } \ + \ + clib_pipeline_exit_loop \ + { \ + clib_pipeline_exit_stage (STAGE1, ARG, 1); \ + } \ +} while (0) + +#define clib_pipeline_run_3_stage(N,ARG,STAGE0,STAGE1,STAGE2) \ +do { \ + uword _clib_pipeline_var(n_vectors) = (N); \ + uword _clib_pipeline_var(n_stages) = 3; \ + uword _clib_pipeline_var(i); \ + \ + clib_pipeline_init_loop \ + { \ + clib_pipeline_init_stage (STAGE0, ARG, 0); \ + clib_pipeline_init_stage (STAGE1, ARG, 1); \ + } \ + \ + clib_pipeline_main_loop \ + { \ + clib_pipeline_main_stage (STAGE0, ARG, 0); \ + clib_pipeline_main_stage (STAGE1, ARG, 1); \ + clib_pipeline_main_stage (STAGE2, ARG, 2); \ + } \ + \ + clib_pipeline_exit_loop \ + { \ + clib_pipeline_exit_stage (STAGE1, ARG, 1); \ + clib_pipeline_exit_stage (STAGE2, ARG, 2); \ + } \ +} while (0) + +#define clib_pipeline_run_4_stage(N,ARG,STAGE0,STAGE1,STAGE2,STAGE3) \ +do { \ + uword _clib_pipeline_var(n_vectors) = (N); \ + uword _clib_pipeline_var(n_stages) = 4; \ + uword _clib_pipeline_var(i); \ + \ + clib_pipeline_init_loop \ + { \ + clib_pipeline_init_stage (STAGE0, ARG, 0); \ + clib_pipeline_init_stage (STAGE1, ARG, 1); \ + clib_pipeline_init_stage (STAGE2, ARG, 2); \ + } \ + \ + clib_pipeline_main_loop \ + { \ + clib_pipeline_main_stage (STAGE0, ARG, 0); \ + clib_pipeline_main_stage (STAGE1, ARG, 1); \ + clib_pipeline_main_stage (STAGE2, ARG, 2); \ + clib_pipeline_main_stage (STAGE3, ARG, 3); \ + } \ + \ + clib_pipeline_exit_loop \ + { \ + clib_pipeline_exit_stage (STAGE1, ARG, 1); \ + clib_pipeline_exit_stage (STAGE2, ARG, 2); \ + clib_pipeline_exit_stage (STAGE3, ARG, 3); \ + } \ +} while (0) + +#endif /* included_clib_pipeline_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/pool.c b/src/vppinfra/pool.c new file mode 100644 index 00000000..ed83b41a --- /dev/null +++ b/src/vppinfra/pool.c @@ -0,0 +1,131 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003, 2004 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/pool.h> + +void +_pool_init_fixed (void **pool_ptr, u32 elt_size, u32 max_elts) +{ + u8 *mmap_base; + u64 vector_size; + u64 free_index_size; + u64 total_size; + u64 page_size; + pool_header_t *fh; + vec_header_t *vh; + u8 *v; + u32 *fi; + u32 i; + u32 set_bits; + + ASSERT (elt_size); + ASSERT (max_elts); + + vector_size = pool_aligned_header_bytes + vec_header_bytes (0) + + (u64) elt_size *max_elts; + + free_index_size = vec_header_bytes (0) + sizeof (u32) * max_elts; + + /* Round up to a cache line boundary */ + vector_size = (vector_size + CLIB_CACHE_LINE_BYTES - 1) + & ~(CLIB_CACHE_LINE_BYTES - 1); + + free_index_size = (free_index_size + CLIB_CACHE_LINE_BYTES - 1) + & ~(CLIB_CACHE_LINE_BYTES - 1); + + total_size = vector_size + free_index_size; + + /* Round up to an even number of pages */ + page_size = clib_mem_get_page_size (); + total_size = (total_size + page_size - 1) & ~(page_size - 1); + + /* mmap demand zero memory */ + + mmap_base = mmap (0, total_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (mmap_base == MAP_FAILED) + { + clib_unix_warning ("mmap"); + *pool_ptr = 0; + } + + /* First comes the pool header */ + fh = (pool_header_t *) mmap_base; + /* Find the user vector pointer */ + v = (u8 *) (mmap_base + pool_aligned_header_bytes); + /* Finally, the vector header */ + vh = _vec_find (v); + + fh->free_bitmap = 0; /* No free elts (yet) */ + fh->max_elts = max_elts; + fh->mmap_base = mmap_base; + fh->mmap_size = total_size; + + vh->len = max_elts; + + /* Build the free-index vector */ + vh = (vec_header_t *) (v + vector_size); + vh->len = max_elts; + fi = (u32 *) (vh + 1); + + fh->free_indices = fi; + + /* Set the entire free bitmap */ + clib_bitmap_alloc (fh->free_bitmap, max_elts); + memset (fh->free_bitmap, 0xff, vec_len (fh->free_bitmap) * sizeof (uword)); + + /* Clear any extraneous set bits */ + set_bits = vec_len (fh->free_bitmap) * BITS (uword); + + for (i = max_elts; i < set_bits; i++) + fh->free_bitmap = clib_bitmap_set (fh->free_bitmap, i, 0); + + /* Create the initial free vector */ + for (i = 0; i < max_elts; i++) + fi[i] = (max_elts - 1) - i; + + *pool_ptr = v; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/pool.h b/src/vppinfra/pool.h new file mode 100644 index 00000000..62d5b54e --- /dev/null +++ b/src/vppinfra/pool.h @@ -0,0 +1,519 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003, 2004 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ +/** @file + * @brief Fixed length block allocator. + Pools are built from clib vectors and bitmaps. Use pools when + repeatedly allocating and freeing fixed-size data. Pools are + fast, and avoid memory fragmentation. + */ + +#ifndef included_pool_h +#define included_pool_h + +#include <vppinfra/bitmap.h> +#include <vppinfra/error.h> +#include <vppinfra/mheap.h> + + +typedef struct +{ + /** Bitmap of indices of free objects. */ + uword *free_bitmap; + + /** Vector of free indices. One element for each set bit in bitmap. */ + u32 *free_indices; + + /* The following fields are set for fixed-size, preallocated pools */ + + /** Maximum size of the pool, in elements */ + u32 max_elts; + + /** mmap segment info: base + length */ + u8 *mmap_base; + u64 mmap_size; + +} pool_header_t; + +/** Align pool header so that pointers are naturally aligned. */ +#define pool_aligned_header_bytes \ + vec_aligned_header_bytes (sizeof (pool_header_t), sizeof (void *)) + +/** Get pool header from user pool pointer */ +always_inline pool_header_t * +pool_header (void *v) +{ + return vec_aligned_header (v, sizeof (pool_header_t), sizeof (void *)); +} + +extern void _pool_init_fixed (void **, u32, u32); +extern void fpool_free (void *); + +/** initialize a fixed-size, preallocated pool */ +#define pool_init_fixed(pool,max_elts) \ +{ \ + _pool_init_fixed((void **)&(pool),sizeof(pool[0]),max_elts); \ +} + +/** Validate a pool */ +always_inline void +pool_validate (void *v) +{ + pool_header_t *p = pool_header (v); + uword i, n_free_bitmap; + + if (!v) + return; + + n_free_bitmap = clib_bitmap_count_set_bits (p->free_bitmap); + ASSERT (n_free_bitmap == vec_len (p->free_indices)); + for (i = 0; i < vec_len (p->free_indices); i++) + ASSERT (clib_bitmap_get (p->free_bitmap, p->free_indices[i]) == 1); +} + +always_inline void +pool_header_validate_index (void *v, uword index) +{ + pool_header_t *p = pool_header (v); + + if (v) + vec_validate (p->free_bitmap, index / BITS (uword)); +} + +#define pool_validate_index(v,i) \ +do { \ + uword __pool_validate_index = (i); \ + vec_validate_ha ((v), __pool_validate_index, \ + pool_aligned_header_bytes, /* align */ 0); \ + pool_header_validate_index ((v), __pool_validate_index); \ +} while (0) + +/** Number of active elements in a pool. + * @return Number of active elements in a pool + */ +always_inline uword +pool_elts (void *v) +{ + uword ret = vec_len (v); + if (v) + ret -= vec_len (pool_header (v)->free_indices); + return ret; +} + +/** Number of elements in pool vector. + + @note You probably want to call pool_elts() instead. +*/ +#define pool_len(p) vec_len(p) + +/** Number of elements in pool vector (usable as an lvalue) + + @note You probably don't want to use this macro. +*/ +#define _pool_len(p) _vec_len(p) + +/** Memory usage of pool header. */ +always_inline uword +pool_header_bytes (void *v) +{ + pool_header_t *p = pool_header (v); + + if (!v) + return 0; + + return vec_bytes (p->free_bitmap) + vec_bytes (p->free_indices); +} + +/** Memory usage of pool. */ +#define pool_bytes(P) (vec_bytes (P) + pool_header_bytes (P)) + +/** Local variable naming macro. */ +#define _pool_var(v) _pool_##v + +/** Queries whether pool has at least N_FREE free elements. */ +always_inline uword +pool_free_elts (void *v) +{ + pool_header_t *p = pool_header (v); + uword n_free = 0; + + if (v) + { + n_free += vec_len (p->free_indices); + + /* Space left at end of vector? */ + n_free += vec_capacity (v, sizeof (p[0])) - vec_len (v); + } + + return n_free; +} + +/** Allocate an object E from a pool P (general version). + + First search free list. If nothing is free extend vector of objects. +*/ +#define pool_get_aligned(P,E,A) \ +do { \ + pool_header_t * _pool_var (p) = pool_header (P); \ + uword _pool_var (l); \ + \ + _pool_var (l) = 0; \ + if (P) \ + _pool_var (l) = vec_len (_pool_var (p)->free_indices); \ + \ + if (_pool_var (l) > 0) \ + { \ + /* Return free element from free list. */ \ + uword _pool_var (i) = _pool_var (p)->free_indices[_pool_var (l) - 1]; \ + (E) = (P) + _pool_var (i); \ + _pool_var (p)->free_bitmap = \ + clib_bitmap_andnoti (_pool_var (p)->free_bitmap, _pool_var (i)); \ + _vec_len (_pool_var (p)->free_indices) = _pool_var (l) - 1; \ + } \ + else \ + { \ + /* fixed-size, preallocated pools cannot expand */ \ + if ((P) && _pool_var(p)->max_elts) \ + { \ + clib_warning ("can't expand fixed-size pool"); \ + os_out_of_memory(); \ + } \ + /* Nothing on free list, make a new element and return it. */ \ + P = _vec_resize (P, \ + /* length_increment */ 1, \ + /* new size */ (vec_len (P) + 1) * sizeof (P[0]), \ + pool_aligned_header_bytes, \ + /* align */ (A)); \ + E = vec_end (P) - 1; \ + } \ +} while (0) + +/** Allocate an object E from a pool P (unspecified alignment). */ +#define pool_get(P,E) pool_get_aligned(P,E,0) + +/** See if pool_get will expand the pool or not */ +#define pool_get_aligned_will_expand(P,YESNO,A) \ +do { \ + pool_header_t * _pool_var (p) = pool_header (P); \ + uword _pool_var (l); \ + \ + _pool_var (l) = 0; \ + if (P) \ + { \ + if (_pool_var (p)->max_elts) \ + return 0; \ + _pool_var (l) = vec_len (_pool_var (p)->free_indices); \ + } \ + \ + /* Free elements, certainly won't expand */ \ + if (_pool_var (l) > 0) \ + YESNO=0; \ + else \ + { \ + /* Nothing on free list, make a new element and return it. */ \ + YESNO = _vec_resize_will_expand \ + (P, \ + /* length_increment */ 1, \ + /* new size */ (vec_len (P) + 1) * sizeof (P[0]), \ + pool_aligned_header_bytes, \ + /* align */ (A)); \ + } \ +} while (0) + +#define pool_get_will_expand(P,YESNO) pool_get_aligned_will_expand(P,YESNO,0) + +/** Use free bitmap to query whether given element is free. */ +#define pool_is_free(P,E) \ +({ \ + pool_header_t * _pool_var (p) = pool_header (P); \ + uword _pool_var (i) = (E) - (P); \ + (_pool_var (i) < vec_len (P)) ? clib_bitmap_get (_pool_var (p)->free_bitmap, _pool_i) : 1; \ +}) + +/** Use free bitmap to query whether given index is free */ +#define pool_is_free_index(P,I) pool_is_free((P),(P)+(I)) + +/** Free an object E in pool P. */ +#define pool_put(P,E) \ +do { \ + pool_header_t * _pool_var (p) = pool_header (P); \ + uword _pool_var (l) = (E) - (P); \ + ASSERT (vec_is_member (P, E)); \ + ASSERT (! pool_is_free (P, E)); \ + \ + /* Add element to free bitmap and to free list. */ \ + _pool_var (p)->free_bitmap = \ + clib_bitmap_ori (_pool_var (p)->free_bitmap, _pool_var (l)); \ + /* Preallocated pool? */ \ + if (_pool_var (p)->max_elts) \ + { \ + ASSERT(_pool_var(l) < _pool_var (p)->max_elts); \ + _pool_var(p)->free_indices[_vec_len(_pool_var(p)->free_indices)] = \ + _pool_var(l); \ + _vec_len(_pool_var(p)->free_indices) += 1; \ + } \ + else \ + vec_add1 (_pool_var (p)->free_indices, _pool_var (l)); \ +} while (0) + +/** Free pool element with given index. */ +#define pool_put_index(p,i) \ +do { \ + typeof (p) _e = (p) + (i); \ + pool_put (p, _e); \ +} while (0) + +/** Allocate N more free elements to pool (general version). */ +#define pool_alloc_aligned(P,N,A) \ +do { \ + pool_header_t * _p; \ + \ + if ((P)) \ + { \ + _p = pool_header (P); \ + if (_p->max_elts) \ + { \ + clib_warning ("Can't expand fixed-size pool"); \ + os_out_of_memory(); \ + } \ + } \ + \ + (P) = _vec_resize ((P), 0, (vec_len (P) + (N)) * sizeof (P[0]), \ + pool_aligned_header_bytes, \ + (A)); \ + _p = pool_header (P); \ + vec_resize (_p->free_indices, (N)); \ + _vec_len (_p->free_indices) -= (N); \ +} while (0) + +/** Allocate N more free elements to pool (unspecified alignment). */ +#define pool_alloc(P,N) pool_alloc_aligned(P,N,0) + +/** Low-level free pool operator (do not call directly). */ +always_inline void * +_pool_free (void *v) +{ + pool_header_t *p = pool_header (v); + if (!v) + return v; + clib_bitmap_free (p->free_bitmap); + + if (p->max_elts) + { + int rv; + + rv = munmap (p->mmap_base, p->mmap_size); + if (rv) + clib_unix_warning ("munmap"); + } + else + { + vec_free (p->free_indices); + vec_free_h (v, pool_aligned_header_bytes); + } + return 0; +} + +/** Free a pool. */ +#define pool_free(p) (p) = _pool_free(p) + +/** Optimized iteration through pool. + + @param LO pointer to first element in chunk + @param HI pointer to last element in chunk + @param POOL pool to iterate across + @param BODY operation to perform + + Optimized version which assumes that BODY is smart enough to + process multiple (LOW,HI) chunks. See also pool_foreach(). + */ +#define pool_foreach_region(LO,HI,POOL,BODY) \ +do { \ + uword _pool_var (i), _pool_var (lo), _pool_var (hi), _pool_var (len); \ + uword _pool_var (bl), * _pool_var (b); \ + pool_header_t * _pool_var (p); \ + \ + _pool_var (p) = pool_header (POOL); \ + _pool_var (b) = (POOL) ? _pool_var (p)->free_bitmap : 0; \ + _pool_var (bl) = vec_len (_pool_var (b)); \ + _pool_var (len) = vec_len (POOL); \ + _pool_var (lo) = 0; \ + \ + for (_pool_var (i) = 0; \ + _pool_var (i) <= _pool_var (bl); \ + _pool_var (i)++) \ + { \ + uword _pool_var (m), _pool_var (f); \ + _pool_var (m) = (_pool_var (i) < _pool_var (bl) \ + ? _pool_var (b) [_pool_var (i)] \ + : 1); \ + while (_pool_var (m) != 0) \ + { \ + _pool_var (f) = first_set (_pool_var (m)); \ + _pool_var (hi) = (_pool_var (i) * BITS (_pool_var (b)[0]) \ + + min_log2 (_pool_var (f))); \ + _pool_var (hi) = (_pool_var (i) < _pool_var (bl) \ + ? _pool_var (hi) : _pool_var (len)); \ + _pool_var (m) ^= _pool_var (f); \ + if (_pool_var (hi) > _pool_var (lo)) \ + { \ + (LO) = _pool_var (lo); \ + (HI) = _pool_var (hi); \ + do { BODY; } while (0); \ + } \ + _pool_var (lo) = _pool_var (hi) + 1; \ + } \ + } \ +} while (0) + +/** Iterate through pool. + + @param VAR A variable of same type as pool vector to be used as an + iterator. + @param POOL The pool to iterate across. + @param BODY The operation to perform, typically a code block. See + the example below. + + This macro will call @c BODY with each active pool element. + + It is a bad idea to allocate or free pool element from within + @c pool_foreach. Build a vector of indices and dispose of them later. + Or call pool_flush. + + + @par Example + @code{.c} + proc_t *procs; // a pool of processes. + proc_t *proc; // pointer to one process; used as the iterator. + + pool_foreach (proc, procs, ({ + if (proc->state != PROC_STATE_RUNNING) + continue; + + // check a running proc in some way + ... + })); + @endcode + + @warning Because @c pool_foreach is a macro, syntax errors can be + difficult to find inside @c BODY, let alone actual code bugs. One + can temporarily split a complex @c pool_foreach into a trivial + @c pool_foreach which builds a vector of active indices, and a + vec_foreach() (or plain for-loop) to walk the active index vector. + */ +#define pool_foreach(VAR,POOL,BODY) \ +do { \ + uword _pool_foreach_lo, _pool_foreach_hi; \ + pool_foreach_region (_pool_foreach_lo, _pool_foreach_hi, (POOL), \ + ({ \ + for ((VAR) = (POOL) + _pool_foreach_lo; \ + (VAR) < (POOL) + _pool_foreach_hi; \ + (VAR)++) \ + do { BODY; } while (0); \ + })); \ +} while (0) + +/** Returns pointer to element at given index. + + ASSERTs that the supplied index is valid. + Even though one can write correct code of the form + @code + p = pool_base + index; + @endcode + use of @c pool_elt_at_index is strongly suggested. + */ +#define pool_elt_at_index(p,i) \ +({ \ + typeof (p) _e = (p) + (i); \ + ASSERT (! pool_is_free (p, _e)); \ + _e; \ +}) + +/** Return next occupied pool index after @c i, useful for safe iteration. */ +#define pool_next_index(P,I) \ +({ \ + pool_header_t * _pool_var (p) = pool_header (P); \ + uword _pool_var (rv) = (I) + 1; \ + \ + _pool_var(rv) = \ + (_pool_var (rv) < vec_len (P) ? \ + clib_bitmap_next_clear (_pool_var (p)->free_bitmap, _pool_var(rv)) \ + : ~0); \ + _pool_var(rv); \ +}) + +/** Iterate pool by index. */ +#define pool_foreach_index(i,v,body) \ + for ((i) = 0; (i) < vec_len (v); (i)++) \ + { \ + if (! pool_is_free_index ((v), (i))) \ + do { body; } while (0); \ + } + +/** + * @brief Remove all elemenets from a pool in a safe way + * + * @param VAR each element in the pool + * @param POOL The pool to flush + * @param BODY The actions to perform on each element before it is returned to + * the pool. i.e. before it is 'freed' + */ +#define pool_flush(VAR, POOL, BODY) \ +{ \ + uword *_pool_var(ii), *_pool_var(dv) = NULL; \ + \ + pool_foreach((VAR), (POOL), \ + ({ \ + vec_add1(_pool_var(dv), (VAR) - (POOL)); \ + })); \ + vec_foreach(_pool_var(ii), _pool_var(dv)) \ + { \ + (VAR) = pool_elt_at_index((POOL), *_pool_var(ii)); \ + do { BODY; } while (0); \ + pool_put((POOL), (VAR)); \ + } \ + vec_free(_pool_var(dv)); \ +} + +#endif /* included_pool_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/ptclosure.c b/src/vppinfra/ptclosure.c new file mode 100644 index 00000000..cda873ef --- /dev/null +++ b/src/vppinfra/ptclosure.c @@ -0,0 +1,125 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vppinfra/ptclosure.h> + +u8 ** +clib_ptclosure_alloc (int n) +{ + u8 **rv = 0; + u8 *row; + int i; + + ASSERT (n > 0); + + vec_validate (rv, n - 1); + for (i = 0; i < n; i++) + { + row = 0; + vec_validate (row, n - 1); + + rv[i] = row; + } + return rv; +} + +void +clib_ptclosure_free (u8 ** ptc) +{ + u8 *row; + int n = vec_len (ptc); + int i; + + ASSERT (n > 0); + + for (i = 0; i < n; i++) + { + row = ptc[i]; + vec_free (row); + } + vec_free (ptc); +} + +void +clib_ptclosure_copy (u8 ** dst, u8 ** src) +{ + int i, n; + u8 *src_row, *dst_row; + + n = vec_len (dst); + + for (i = 0; i < vec_len (dst); i++) + { + src_row = src[i]; + dst_row = dst[i]; + clib_memcpy (dst_row, src_row, n); + } +} + +/* + * compute the positive transitive closure + * of a relation via Warshall's algorithm. + * + * Ref: + * Warshall, Stephen (January 1962). "A theorem on Boolean matrices". + * Journal of the ACM 9 (1): 11–12. + * + * foo[i][j] = 1 means that item i + * "bears the relation" to item j. + * + * For example: "item i must be before item j" + * + * You could use a bitmap, but since the algorithm is + * O(n**3) in the first place, large N is inadvisable... + * + */ + +u8 ** +clib_ptclosure (u8 ** orig) +{ + int i, j, k; + int n; + u8 **prev, **cur; + + n = vec_len (orig); + prev = clib_ptclosure_alloc (n); + cur = clib_ptclosure_alloc (n); + + clib_ptclosure_copy (prev, orig); + + for (k = 0; k < n; k++) + { + for (i = 0; i < n; i++) + { + for (j = 0; j < n; j++) + { + cur[i][j] = prev[i][j] || (prev[i][k] && prev[k][j]); + } + } + clib_ptclosure_copy (prev, cur); + } + clib_ptclosure_free (prev); + return cur; +} + + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/ptclosure.h b/src/vppinfra/ptclosure.h new file mode 100644 index 00000000..ee1609a1 --- /dev/null +++ b/src/vppinfra/ptclosure.h @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef included_clib_ptclosure_h +#define included_clib_ptclosure_h + +#include <vppinfra/vec.h> +#include <vppinfra/format.h> +#include <vppinfra/error.h> + +/* + * set r[i][j] if item i "bears the relation to" item j + * + */ + +u8 **clib_ptclosure_alloc (int n); +void clib_ptclosure_free (u8 ** ptc); +void clib_ptclosure_copy (u8 ** dst, u8 ** src); +u8 **clib_ptclosure (u8 ** orig); + +#endif /* included_clib_ptclosure_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/qhash.c b/src/vppinfra/qhash.c new file mode 100644 index 00000000..f4e38c4a --- /dev/null +++ b/src/vppinfra/qhash.c @@ -0,0 +1,858 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2006 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/qhash.h> + +#define QHASH_ALL_VALID ((1 << QHASH_KEYS_PER_BUCKET) - 1) + +void * +_qhash_resize (void *v, uword length, uword elt_bytes) +{ + qhash_t *h; + uword l; + + l = clib_max (max_log2 (length), 2 + QHASH_LOG2_KEYS_PER_BUCKET); + + /* Round up if less than 1/2 full. */ + l += ((f64) length / (f64) (1 << l)) < .5; + + v = _vec_resize (0, 1 << l, elt_bytes << l, sizeof (h[0]), + /* align */ sizeof (uword)); + + h = qhash_header (v); + h->n_elts = 0; + h->log2_hash_size = l; + h->hash_keys = + clib_mem_alloc_aligned_no_fail (sizeof (h->hash_keys[0]) << l, + CLIB_CACHE_LINE_BYTES); + vec_resize (h->hash_key_valid_bitmap, + 1 << (l - QHASH_LOG2_KEYS_PER_BUCKET)); + memset (v, ~0, elt_bytes << l); + + return v; +} + +static u8 min_log2_table[256]; + +static inline uword +qhash_min_log2 (uword x) +{ + ASSERT (is_pow2 (x)); + ASSERT (x < 256); + return min_log2_table[x]; +} + +static void +qhash_min_log2_init () +{ + int i; + for (i = 0; i < 256; i++) + min_log2_table[i] = min_log2 (i); +} + +always_inline uword +qhash_get_valid_elt_mask (qhash_t * h, uword i) +{ + return h->hash_key_valid_bitmap[i / QHASH_KEYS_PER_BUCKET]; +} + +always_inline void +qhash_set_valid_elt_mask (qhash_t * h, uword i, uword mask) +{ + h->hash_key_valid_bitmap[i / QHASH_KEYS_PER_BUCKET] = mask; +} + +always_inline uword +qhash_search_bucket (uword * hash_keys, uword search_key, uword m) +{ + uword t; +#define _(i) ((hash_keys[i] == search_key) << i) + t = (_(0) | _(1) | _(2) | _(3)); + if (QHASH_KEYS_PER_BUCKET > 4) + t |= (_(4) | _(5) | _(6) | _(7)); + if (QHASH_KEYS_PER_BUCKET > 8) + t |= (_(8) | _(9) | _(10) | _(11) | _(12) | _(13) | _(14) | _(15)); +#undef _ + return m & t; +} + +/* Lookup multiple keys in the same hash table. */ +void +qhash_get_multiple (void *v, + uword * search_keys, + uword n_search_keys, u32 * result_indices) +{ + qhash_t *h = qhash_header (v); + uword *k, *hash_keys; + uword n_left, bucket_mask; + u32 *r; + + if (!v) + { + memset (result_indices, ~0, sizeof (result_indices[0]) * n_search_keys); + return; + } + + bucket_mask = pow2_mask (h->log2_hash_size) & ~(QHASH_KEYS_PER_BUCKET - 1); + + k = search_keys; + n_left = n_search_keys; + hash_keys = h->hash_keys; + r = result_indices; + + while (n_left >= 2) + { + u32 a0, b0, c0, bi0, valid0, match0; + u32 a1, b1, c1, bi1, valid1, match1; + uword k0, k1, *h0, *h1; + + k0 = k[0]; + k1 = k[1]; + n_left -= 2; + k += 2; + + a0 = a1 = h->hash_seeds[0]; + b0 = b1 = h->hash_seeds[1]; + c0 = c1 = h->hash_seeds[2]; + a0 ^= k0; + a1 ^= k1; +#if uword_bits == 64 + b0 ^= k0 >> 32; + b1 ^= k1 >> 32; +#endif + + hash_mix32_step_1 (a0, b0, c0); + hash_mix32_step_1 (a1, b1, c1); + hash_mix32_step_2 (a0, b0, c0); + hash_mix32_step_2 (a1, b1, c1); + hash_mix32_step_3 (a0, b0, c0); + hash_mix32_step_3 (a1, b1, c1); + + bi0 = c0 & bucket_mask; + bi1 = c1 & bucket_mask; + + h0 = hash_keys + bi0; + h1 = hash_keys + bi1; + + /* Search two buckets. */ + valid0 = qhash_get_valid_elt_mask (h, bi0); + valid1 = qhash_get_valid_elt_mask (h, bi1); + + match0 = qhash_search_bucket (h0, k0, valid0); + match1 = qhash_search_bucket (h1, k1, valid1); + + bi0 += qhash_min_log2 (match0); + bi1 += qhash_min_log2 (match1); + + r[0] = match0 ? bi0 : ~0; + r[1] = match1 ? bi1 : ~0; + r += 2; + + /* Full buckets trigger search of overflow hash. */ + if (PREDICT_FALSE (!match0 && valid0 == QHASH_ALL_VALID)) + { + uword *p = hash_get (h->overflow_hash, k0); + r[-2] = p ? p[0] : ~0; + } + + /* Full buckets trigger search of overflow hash. */ + if (PREDICT_FALSE (!match1 && valid1 == QHASH_ALL_VALID)) + { + uword *p = hash_get (h->overflow_hash, k1); + r[-1] = p ? p[0] : ~0; + } + } + + while (n_left >= 1) + { + u32 a0, b0, c0, bi0, valid0, match0; + uword k0, *h0; + + k0 = k[0]; + n_left -= 1; + k += 1; + + a0 = h->hash_seeds[0]; + b0 = h->hash_seeds[1]; + c0 = h->hash_seeds[2]; + a0 ^= k0; +#if uword_bits == 64 + b0 ^= k0 >> 32; +#endif + + hash_mix32 (a0, b0, c0); + + bi0 = c0 & bucket_mask; + + h0 = hash_keys + bi0; + + /* Search one bucket. */ + valid0 = qhash_get_valid_elt_mask (h, bi0); + match0 = qhash_search_bucket (h0, k0, valid0); + + bi0 += qhash_min_log2 (match0); + + r[0] = match0 ? bi0 : ~0; + r += 1; + + /* Full buckets trigger search of overflow hash. */ + if (PREDICT_FALSE (!match0 && valid0 == QHASH_ALL_VALID)) + { + uword *p = hash_get (h->overflow_hash, k0); + r[-1] = p ? p[0] : ~0; + } + } +} + +/* Lookup multiple keys in the same hash table. + Returns index of first matching key. */ +u32 +qhash_get_first_match (void *v, + uword * search_keys, + uword n_search_keys, uword * matching_key) +{ + qhash_t *h = qhash_header (v); + uword *k, *hash_keys; + uword n_left, match_mask, bucket_mask; + + if (!v) + return ~0; + + match_mask = 0; + bucket_mask = pow2_mask (h->log2_hash_size) & ~(QHASH_KEYS_PER_BUCKET - 1); + + k = search_keys; + n_left = n_search_keys; + hash_keys = h->hash_keys; + while (n_left >= 2) + { + u32 a0, b0, c0, bi0, valid0; + u32 a1, b1, c1, bi1, valid1; + uword k0, k1, *h0, *h1; + + k0 = k[0]; + k1 = k[1]; + n_left -= 2; + k += 2; + + a0 = a1 = h->hash_seeds[0]; + b0 = b1 = h->hash_seeds[1]; + c0 = c1 = h->hash_seeds[2]; + a0 ^= k0; + a1 ^= k1; +#if uword_bits == 64 + b0 ^= k0 >> 32; + b1 ^= k1 >> 32; +#endif + + hash_mix32_step_1 (a0, b0, c0); + hash_mix32_step_1 (a1, b1, c1); + hash_mix32_step_2 (a0, b0, c0); + hash_mix32_step_2 (a1, b1, c1); + hash_mix32_step_3 (a0, b0, c0); + hash_mix32_step_3 (a1, b1, c1); + + bi0 = c0 & bucket_mask; + bi1 = c1 & bucket_mask; + + h0 = hash_keys + bi0; + h1 = hash_keys + bi1; + + /* Search two buckets. */ + valid0 = qhash_get_valid_elt_mask (h, bi0); + valid1 = qhash_get_valid_elt_mask (h, bi1); + match_mask = qhash_search_bucket (h0, k0, valid0); + match_mask |= (qhash_search_bucket (h1, k1, valid1) + << QHASH_KEYS_PER_BUCKET); + if (match_mask) + { + uword bi, is_match1; + + bi = qhash_min_log2 (match_mask); + is_match1 = bi >= QHASH_KEYS_PER_BUCKET; + + bi += ((is_match1 ? bi1 : bi0) + - (is_match1 << QHASH_LOG2_KEYS_PER_BUCKET)); + *matching_key = (k - 2 - search_keys) + is_match1; + return bi; + } + + /* Full buckets trigger search of overflow hash. */ + if (PREDICT_FALSE (valid0 == QHASH_ALL_VALID + || valid1 == QHASH_ALL_VALID)) + { + uword *p = 0; + uword ki = k - 2 - search_keys; + + if (valid0 == QHASH_ALL_VALID) + p = hash_get (h->overflow_hash, k0); + + if (!p && valid1 == QHASH_ALL_VALID) + { + p = hash_get (h->overflow_hash, k1); + ki++; + } + + if (p) + { + *matching_key = ki; + return p[0]; + } + } + } + + while (n_left >= 1) + { + u32 a0, b0, c0, bi0, valid0; + uword k0, *h0; + + k0 = k[0]; + n_left -= 1; + k += 1; + + a0 = h->hash_seeds[0]; + b0 = h->hash_seeds[1]; + c0 = h->hash_seeds[2]; + a0 ^= k0; +#if uword_bits == 64 + b0 ^= k0 >> 32; +#endif + + hash_mix32 (a0, b0, c0); + + bi0 = c0 & bucket_mask; + + h0 = hash_keys + bi0; + + /* Search one bucket. */ + valid0 = qhash_get_valid_elt_mask (h, bi0); + match_mask = qhash_search_bucket (h0, k0, valid0); + if (match_mask) + { + uword bi; + bi = bi0 + qhash_min_log2 (match_mask); + *matching_key = (k - 1 - search_keys); + return bi; + } + + /* Full buckets trigger search of overflow hash. */ + if (PREDICT_FALSE (valid0 == QHASH_ALL_VALID)) + { + uword *p = hash_get (h->overflow_hash, k0); + if (p) + { + *matching_key = (k - 1 - search_keys); + return p[0]; + } + } + } + + return ~0; +} + +static void * +qhash_set_overflow (void *v, uword elt_bytes, + uword key, uword bi, uword * n_elts, u32 * result) +{ + qhash_t *h = qhash_header (v); + uword *p = hash_get (h->overflow_hash, key); + uword i; + + bi /= QHASH_KEYS_PER_BUCKET; + + if (p) + i = p[0]; + else + { + uword l = vec_len (h->overflow_free_indices); + if (l > 0) + { + i = h->overflow_free_indices[l - 1]; + _vec_len (h->overflow_free_indices) = l - 1; + } + else + i = (1 << h->log2_hash_size) + hash_elts (h->overflow_hash); + hash_set (h->overflow_hash, key, i); + vec_validate (h->overflow_counts, bi); + h->overflow_counts[bi] += 1; + *n_elts += 1; + + l = vec_len (v); + if (i >= l) + { + uword dl = round_pow2 (1 + i - l, 8); + v = _vec_resize (v, dl, (l + dl) * elt_bytes, sizeof (h[0]), + /* align */ sizeof (uword)); + memset (v + l * elt_bytes, ~0, dl * elt_bytes); + } + } + + *result = i; + + return v; +} + +static uword +qhash_unset_overflow (void *v, uword key, uword bi, uword * n_elts) +{ + qhash_t *h = qhash_header (v); + uword *p = hash_get (h->overflow_hash, key); + uword result; + + bi /= QHASH_KEYS_PER_BUCKET; + + if (p) + { + result = p[0]; + hash_unset (h->overflow_hash, key); + ASSERT (bi < vec_len (h->overflow_counts)); + ASSERT (h->overflow_counts[bi] > 0); + ASSERT (*n_elts > 0); + vec_add1 (h->overflow_free_indices, result); + h->overflow_counts[bi] -= 1; + *n_elts -= 1; + } + else + result = ~0; + + return result; +} + +always_inline uword +qhash_find_free (uword i, uword valid_mask) +{ + return first_set (~valid_mask & pow2_mask (QHASH_KEYS_PER_BUCKET)); +} + +void * +_qhash_set_multiple (void *v, + uword elt_bytes, + uword * search_keys, + uword n_search_keys, u32 * result_indices) +{ + qhash_t *h = qhash_header (v); + uword *k, *hash_keys; + uword n_left, n_elts, bucket_mask; + u32 *r; + + if (vec_len (v) < n_search_keys) + v = _qhash_resize (v, n_search_keys, elt_bytes); + + if (qhash_min_log2 (2) != 1) + { + qhash_min_log2_init (); + ASSERT (qhash_min_log2 (2) == 1); + } + + ASSERT (v != 0); + + bucket_mask = pow2_mask (h->log2_hash_size) & ~(QHASH_KEYS_PER_BUCKET - 1); + + hash_keys = h->hash_keys; + k = search_keys; + r = result_indices; + n_left = n_search_keys; + n_elts = h->n_elts; + + while (n_left >= 2) + { + u32 a0, b0, c0, bi0, match0, valid0, free0; + u32 a1, b1, c1, bi1, match1, valid1, free1; + uword k0, *h0; + uword k1, *h1; + + k0 = k[0]; + k1 = k[1]; + + /* Keys must be unique. */ + ASSERT (k0 != k1); + + n_left -= 2; + k += 2; + + a0 = a1 = h->hash_seeds[0]; + b0 = b1 = h->hash_seeds[1]; + c0 = c1 = h->hash_seeds[2]; + a0 ^= k0; + a1 ^= k1; +#if uword_bits == 64 + b0 ^= k0 >> 32; + b1 ^= k1 >> 32; +#endif + + hash_mix32_step_1 (a0, b0, c0); + hash_mix32_step_1 (a1, b1, c1); + hash_mix32_step_2 (a0, b0, c0); + hash_mix32_step_2 (a1, b1, c1); + hash_mix32_step_3 (a0, b0, c0); + hash_mix32_step_3 (a1, b1, c1); + + bi0 = c0 & bucket_mask; + bi1 = c1 & bucket_mask; + + h0 = hash_keys + bi0; + h1 = hash_keys + bi1; + + /* Search two buckets. */ + valid0 = qhash_get_valid_elt_mask (h, bi0); + valid1 = qhash_get_valid_elt_mask (h, bi1); + + match0 = qhash_search_bucket (h0, k0, valid0); + match1 = qhash_search_bucket (h1, k1, valid1); + + /* Find first free element starting at hash offset into bucket. */ + free0 = qhash_find_free (c0 & (QHASH_KEYS_PER_BUCKET - 1), valid0); + + valid1 = valid1 | (bi0 == bi1 ? free0 : 0); + free1 = qhash_find_free (c1 & (QHASH_KEYS_PER_BUCKET - 1), valid1); + + n_elts += (match0 == 0) + (match1 == 0); + + match0 = match0 ? match0 : free0; + match1 = match1 ? match1 : free1; + + valid0 |= match0; + valid1 |= match1; + + h0 += qhash_min_log2 (match0); + h1 += qhash_min_log2 (match1); + + if (PREDICT_FALSE (!match0 || !match1)) + goto slow_path2; + + h0[0] = k0; + h1[0] = k1; + r[0] = h0 - hash_keys; + r[1] = h1 - hash_keys; + r += 2; + qhash_set_valid_elt_mask (h, bi0, valid0); + qhash_set_valid_elt_mask (h, bi1, valid1); + continue; + + slow_path2: + if (!match0) + { + n_elts -= 1; + v = qhash_set_overflow (v, elt_bytes, k0, bi0, &n_elts, &r[0]); + } + else + { + h0[0] = k0; + r[0] = h0 - hash_keys; + qhash_set_valid_elt_mask (h, bi0, valid0); + } + if (!match1) + { + n_elts -= 1; + v = qhash_set_overflow (v, elt_bytes, k1, bi1, &n_elts, &r[1]); + } + else + { + h1[0] = k1; + r[1] = h1 - hash_keys; + qhash_set_valid_elt_mask (h, bi1, valid1); + } + r += 2; + } + + while (n_left >= 1) + { + u32 a0, b0, c0, bi0, match0, valid0, free0; + uword k0, *h0; + + k0 = k[0]; + n_left -= 1; + k += 1; + + a0 = h->hash_seeds[0]; + b0 = h->hash_seeds[1]; + c0 = h->hash_seeds[2]; + a0 ^= k0; +#if uword_bits == 64 + b0 ^= k0 >> 32; +#endif + + hash_mix32 (a0, b0, c0); + + bi0 = c0 & bucket_mask; + + h0 = hash_keys + bi0; + + valid0 = qhash_get_valid_elt_mask (h, bi0); + + /* Find first free element starting at hash offset into bucket. */ + free0 = qhash_find_free (c0 & (QHASH_KEYS_PER_BUCKET - 1), valid0); + + match0 = qhash_search_bucket (h0, k0, valid0); + + n_elts += (match0 == 0); + + match0 = match0 ? match0 : free0; + + valid0 |= match0; + + h0 += qhash_min_log2 (match0); + + if (PREDICT_FALSE (!match0)) + goto slow_path1; + + h0[0] = k0; + r[0] = h0 - hash_keys; + r += 1; + qhash_set_valid_elt_mask (h, bi0, valid0); + continue; + + slow_path1: + n_elts -= 1; + v = qhash_set_overflow (v, elt_bytes, k0, bi0, &n_elts, &r[0]); + r += 1; + } + + h = qhash_header (v); + h->n_elts = n_elts; + + return v; +} + +static uword +unset_slow_path (void *v, uword elt_bytes, + uword k0, uword bi0, uword valid0, uword match0, + uword * n_elts) +{ + qhash_t *h = qhash_header (v); + uword i, j = 0, k, l, t = ~0; + hash_pair_t *p, *found; + + if (!match0) + { + if (valid0 == QHASH_ALL_VALID) + t = qhash_unset_overflow (v, k0, bi0, n_elts); + return t; + } + + i = bi0 / QHASH_KEYS_PER_BUCKET; + t = bi0 + qhash_min_log2 (match0); + + if (valid0 == QHASH_ALL_VALID + && i < vec_len (h->overflow_counts) && h->overflow_counts[i] > 0) + { + found = 0; + /* *INDENT-OFF* */ + hash_foreach_pair (p, h->overflow_hash, ({ + j = qhash_hash_mix (h, p->key) / QHASH_KEYS_PER_BUCKET; + if (j == i) + { + found = p; + break; + } + })); + /* *INDENT-ON* */ + ASSERT (found != 0); + ASSERT (j == i); + + l = found->value[0]; + k = found->key; + hash_unset3 (h->overflow_hash, k, &j); + vec_add1 (h->overflow_free_indices, j); + h->overflow_counts[i] -= 1; + + qhash_set_valid_elt_mask (h, bi0, valid0); + + h->hash_keys[t] = k; + clib_memswap (v + t * elt_bytes, v + l * elt_bytes, elt_bytes); + t = l; + } + else + qhash_set_valid_elt_mask (h, bi0, valid0 ^ match0); + + return t; +} + +void +_qhash_unset_multiple (void *v, + uword elt_bytes, + uword * search_keys, + uword n_search_keys, u32 * result_indices) +{ + qhash_t *h = qhash_header (v); + uword *k, *hash_keys; + uword n_left, n_elts, bucket_mask; + u32 *r; + + if (!v) + { + uword i; + for (i = 0; i < n_search_keys; i++) + result_indices[i] = ~0; + } + + bucket_mask = pow2_mask (h->log2_hash_size) & ~(QHASH_KEYS_PER_BUCKET - 1); + + hash_keys = h->hash_keys; + k = search_keys; + r = result_indices; + n_left = n_search_keys; + n_elts = h->n_elts; + + while (n_left >= 2) + { + u32 a0, b0, c0, bi0, match0, valid0; + u32 a1, b1, c1, bi1, match1, valid1; + uword k0, *h0; + uword k1, *h1; + + k0 = k[0]; + k1 = k[1]; + + /* Keys must be unique. */ + ASSERT (k0 != k1); + + n_left -= 2; + k += 2; + + a0 = a1 = h->hash_seeds[0]; + b0 = b1 = h->hash_seeds[1]; + c0 = c1 = h->hash_seeds[2]; + a0 ^= k0; + a1 ^= k1; +#if uword_bits == 64 + b0 ^= k0 >> 32; + b1 ^= k1 >> 32; +#endif + + hash_mix32_step_1 (a0, b0, c0); + hash_mix32_step_1 (a1, b1, c1); + hash_mix32_step_2 (a0, b0, c0); + hash_mix32_step_2 (a1, b1, c1); + hash_mix32_step_3 (a0, b0, c0); + hash_mix32_step_3 (a1, b1, c1); + + bi0 = c0 & bucket_mask; + bi1 = c1 & bucket_mask; + + h0 = hash_keys + bi0; + h1 = hash_keys + bi1; + + /* Search two buckets. */ + valid0 = qhash_get_valid_elt_mask (h, bi0); + valid1 = qhash_get_valid_elt_mask (h, bi1); + + match0 = qhash_search_bucket (h0, k0, valid0); + match1 = qhash_search_bucket (h1, k1, valid1); + + n_elts -= (match0 != 0) + (match1 != 0); + + if (PREDICT_FALSE (valid0 == QHASH_ALL_VALID + || valid1 == QHASH_ALL_VALID)) + goto slow_path2; + + valid0 ^= match0; + qhash_set_valid_elt_mask (h, bi0, valid0); + + valid1 = bi0 == bi1 ? valid0 : valid1; + valid1 ^= match1; + + qhash_set_valid_elt_mask (h, bi1, valid1); + + r[0] = match0 ? bi0 + qhash_min_log2 (match0) : ~0; + r[1] = match1 ? bi1 + qhash_min_log2 (match1) : ~0; + r += 2; + continue; + + slow_path2: + r[0] = unset_slow_path (v, elt_bytes, k0, bi0, valid0, match0, &n_elts); + if (bi0 == bi1) + { + /* Search again in same bucket to test new overflow element. */ + valid1 = qhash_get_valid_elt_mask (h, bi0); + if (!match1) + { + match1 = qhash_search_bucket (h1, k1, valid1); + n_elts -= (match1 != 0); + } + } + r[1] = unset_slow_path (v, elt_bytes, k1, bi1, valid1, match1, &n_elts); + r += 2; + } + + while (n_left >= 1) + { + u32 a0, b0, c0, bi0, match0, valid0; + uword k0, *h0; + + k0 = k[0]; + n_left -= 1; + k += 1; + + a0 = h->hash_seeds[0]; + b0 = h->hash_seeds[1]; + c0 = h->hash_seeds[2]; + a0 ^= k0; +#if uword_bits == 64 + b0 ^= k0 >> 32; +#endif + + hash_mix32 (a0, b0, c0); + + bi0 = c0 & bucket_mask; + + h0 = hash_keys + bi0; + + valid0 = qhash_get_valid_elt_mask (h, bi0); + + match0 = qhash_search_bucket (h0, k0, valid0); + n_elts -= (match0 != 0); + qhash_set_valid_elt_mask (h, bi0, valid0 ^ match0); + + r[0] = match0 ? bi0 + qhash_min_log2 (match0) : ~0; + r += 1; + + if (PREDICT_FALSE (valid0 == QHASH_ALL_VALID)) + r[-1] = unset_slow_path (v, elt_bytes, k0, bi0, valid0, match0, + &n_elts); + } + + h->n_elts = n_elts; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/qhash.h b/src/vppinfra/qhash.h new file mode 100644 index 00000000..9dbbd971 --- /dev/null +++ b/src/vppinfra/qhash.h @@ -0,0 +1,169 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2006 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_qhash_h +#define included_qhash_h + +#include <vppinfra/cache.h> +#include <vppinfra/hash.h> + +/* Word hash tables. */ +typedef struct +{ + /* Number of elements in hash. */ + u32 n_elts; + + u32 log2_hash_size; + + /* Jenkins hash seeds. */ + u32 hash_seeds[3]; + + /* Fall back CLIB hash for overflow in fixed sized buckets. */ + uword *overflow_hash; + + u32 *overflow_counts, *overflow_free_indices; + + u8 *hash_key_valid_bitmap; + + uword *hash_keys; +} qhash_t; + +always_inline qhash_t * +qhash_header (void *v) +{ + return vec_header (v, sizeof (qhash_t)); +} + +always_inline uword +qhash_elts (void *v) +{ + return v ? qhash_header (v)->n_elts : 0; +} + +always_inline uword +qhash_n_overflow (void *v) +{ + return v ? hash_elts (qhash_header (v)->overflow_hash) : 0; +} + +#define QHASH_LOG2_KEYS_PER_BUCKET 2 +#define QHASH_KEYS_PER_BUCKET (1 << QHASH_LOG2_KEYS_PER_BUCKET) + +always_inline uword +qhash_hash_mix (qhash_t * h, uword key) +{ + u32 a, b, c; + + a = h->hash_seeds[0]; + b = h->hash_seeds[1]; + c = h->hash_seeds[2]; + + a ^= key; +#if uword_bits == 64 + b ^= key >> 32; +#endif + + hash_mix32 (a, b, c); + + return c & pow2_mask (h->log2_hash_size); +} + +#define qhash_resize(v,n) (v) = _qhash_resize ((v), (n), sizeof ((v)[0])) + +#define qhash_foreach(var,v,body) + +#define qhash_set_multiple(v,keys,n,results) \ + (v) = _qhash_set_multiple ((v), sizeof ((v)[0]), (keys), (n), (results)) + +#define qhash_unset_multiple(v,keys,n,results) \ + _qhash_unset_multiple ((v), sizeof ((v)[0]), (keys), (n), (results)) + +#define qhash_get(v,key) \ +({ \ + uword _qhash_get_k = (key); \ + qhash_get_first_match ((v), &_qhash_get_k, 1, &_qhash_get_k); \ +}) + +#define qhash_set(v,k) \ +({ \ + uword _qhash_set_k = (k); \ + qhash_set_multiple ((v), &_qhash_set_k, 1, &_qhash_set_k); \ + _qhash_set_k; \ +}) + +#define qhash_unset(v,k) \ +({ \ + uword _qhash_unset_k = (k); \ + qhash_unset_multiple ((v), &_qhash_unset_k, 1, &_qhash_unset_k); \ + _qhash_unset_k; \ +}) + +void *_qhash_resize (void *v, uword length, uword elt_bytes); + +/* Lookup multiple keys in the same hash table. */ +void +qhash_get_multiple (void *v, + uword * search_keys, + uword n_search_keys, u32 * result_indices); + +/* Lookup multiple keys in the same hash table. + Returns index of first matching key. */ +u32 +qhash_get_first_match (void *v, + uword * search_keys, + uword n_search_keys, uword * matching_key); + +/* Set/unset helper functions. */ +void *_qhash_set_multiple (void *v, + uword elt_bytes, + uword * search_keys, + uword n_search_keys, u32 * result_indices); +void +_qhash_unset_multiple (void *v, + uword elt_bytes, + uword * search_keys, + uword n_search_keys, u32 * result_indices); + +#endif /* included_qhash_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/qsort.c b/src/vppinfra/qsort.c new file mode 100644 index 00000000..2faa5897 --- /dev/null +++ b/src/vppinfra/qsort.c @@ -0,0 +1,269 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + * Imported into CLIB by Eliot Dresselhaus from: + * + * This file is part of + * MakeIndex - A formatter and format independent index processor + * + * This file is public domain software donated by + * Nelson Beebe (beebe@science.utah.edu). + * + * modifications copyright (c) 2003 Cisco Systems, Inc. + */ + +#include <vppinfra/clib.h> + +/* + * qsort.c: Our own version of the system qsort routine which is faster by an + * average of 25%, with lows and highs of 10% and 50%. The THRESHold below is + * the insertion sort threshold, and has been adjusted for records of size 48 + * bytes. The MTHREShold is where we stop finding a better median. + */ + +#define THRESH 4 /* threshold for insertion */ +#define MTHRESH 6 /* threshold for median */ + +typedef struct +{ + word qsz; /* size of each record */ + word thresh; /* THRESHold in chars */ + word mthresh; /* MTHRESHold in chars */ + int (*qcmp) (const void *, const void *); /* the comparison routine */ +} qst_t; + +static void qst (qst_t * q, char *base, char *max); + +/* + * qqsort: First, set up some global parameters for qst to share. + * Then, quicksort with qst(), and then a cleanup insertion sort ourselves. + * Sound simple? It's not... + */ + +void +qsort (void *base, uword n, uword size, + int (*compar) (const void *, const void *)) +{ + char *i; + char *j; + char *lo; + char *hi; + char *min; + char c; + char *max; + qst_t _q, *q = &_q; + + if (n <= 1) + return; + + q->qsz = size; + q->qcmp = compar; + q->thresh = q->qsz * THRESH; + q->mthresh = q->qsz * MTHRESH; + max = base + n * q->qsz; + if (n >= THRESH) + { + qst (q, base, max); + hi = base + q->thresh; + } + else + { + hi = max; + } + /* + * First put smallest element, which must be in the first THRESH, in the + * first position as a sentinel. This is done just by searching the + * first THRESH elements (or the first n if n < THRESH), finding the min, + * and swapping it into the first position. + */ + for (j = lo = base; (lo += q->qsz) < hi;) + { + if ((*compar) (j, lo) > 0) + j = lo; + } + if (j != base) + { /* swap j into place */ + for (i = base, hi = base + q->qsz; i < hi;) + { + c = *j; + *j++ = *i; + *i++ = c; + } + } + /* + * With our sentinel in place, we now run the following hyper-fast + * insertion sort. For each remaining element, min, from [1] to [n-1], + * set hi to the index of the element AFTER which this one goes. Then, do + * the standard insertion sort shift on a character at a time basis for + * each element in the frob. + */ + for (min = base; (hi = min += q->qsz) < max;) + { + while ((*q->qcmp) (hi -= q->qsz, min) > 0); + if ((hi += q->qsz) != min) + { + for (lo = min + q->qsz; --lo >= min;) + { + c = *lo; + for (i = j = lo; (j -= q->qsz) >= hi; i = j) + *i = *j; + *i = c; + } + } + } +} + + + +/* + * qst: Do a quicksort. First, find the median element, and put that one in + * the first place as the discriminator. (This "median" is just the median + * of the first, last and middle elements). (Using this median instead of + * the first element is a big win). Then, the usual partitioning/swapping, + * followed by moving the discriminator into the right place. Then, figure + * out the sizes of the two partions, do the smaller one recursively and the + * larger one via a repeat of this code. Stopping when there are less than + * THRESH elements in a partition and cleaning up with an insertion sort (in + * our caller) is a huge win. All data swaps are done in-line, which is + * space-losing but time-saving. (And there are only three places where this + * is done). + */ + +static void +qst (qst_t * q, char *base, char *max) +{ + char *i; + char *j; + char *jj; + char *mid; + int ii; + char c; + char *tmp; + int lo; + int hi; + int qsz = q->qsz; + + lo = (int) (max - base); /* number of elements as chars */ + do + { + /* + * At the top here, lo is the number of characters of elements in the + * current partition. (Which should be max - base). Find the median + * of the first, last, and middle element and make that the middle + * element. Set j to largest of first and middle. If max is larger + * than that guy, then it's that guy, else compare max with loser of + * first and take larger. Things are set up to prefer the middle, + * then the first in case of ties. + */ + mid = i = base + qsz * ((unsigned) (lo / qsz) >> 1); + if (lo >= q->mthresh) + { + j = ((*q->qcmp) ((jj = base), i) > 0 ? jj : i); + if ((*q->qcmp) (j, (tmp = max - qsz)) > 0) + { + /* switch to first loser */ + j = (j == jj ? i : jj); + if ((*q->qcmp) (j, tmp) < 0) + j = tmp; + } + if (j != i) + { + ii = qsz; + do + { + c = *i; + *i++ = *j; + *j++ = c; + } + while (--ii); + } + } + /* Semi-standard quicksort partitioning/swapping */ + for (i = base, j = max - qsz;;) + { + while (i < mid && (*q->qcmp) (i, mid) <= 0) + i += qsz; + while (j > mid) + { + if ((*q->qcmp) (mid, j) <= 0) + { + j -= qsz; + continue; + } + tmp = i + qsz; /* value of i after swap */ + if (i == mid) + { /* j <-> mid, new mid is j */ + mid = jj = j; + } + else + { /* i <-> j */ + jj = j; + j -= qsz; + } + goto swap; + } + if (i == mid) + { + break; + } + else + { /* i <-> mid, new mid is i */ + jj = mid; + tmp = mid = i; /* value of i after swap */ + j -= qsz; + } + swap: + ii = qsz; + do + { + c = *i; + *i++ = *jj; + *jj++ = c; + } + while (--ii); + i = tmp; + } + /* + * Look at sizes of the two partitions, do the smaller one first by + * recursion, then do the larger one by making sure lo is its size, + * base and max are update correctly, and branching back. But only + * repeat (recursively or by branching) if the partition is of at + * least size THRESH. + */ + i = (j = mid) + qsz; + if ((lo = (int) (j - base)) <= (hi = (int) (max - i))) + { + if (lo >= q->thresh) + qst (q, base, j); + base = i; + lo = hi; + } + else + { + if (hi >= q->thresh) + qst (q, i, max); + max = j; + } + } + while (lo >= q->thresh); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/random.c b/src/vppinfra/random.c new file mode 100644 index 00000000..fa5bcc8c --- /dev/null +++ b/src/vppinfra/random.c @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/random.h> + +/* Default random seed for standalone version of library. + Value can be overridden by platform code from e.g. + machine's clock count register. */ +u32 standalone_random_default_seed = 1; + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/random.h b/src/vppinfra/random.h new file mode 100644 index 00000000..5c139d05 --- /dev/null +++ b/src/vppinfra/random.h @@ -0,0 +1,178 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_random_h +#define included_random_h + +#include <vppinfra/clib.h> +#include <vppinfra/vec.h> /* for vec_resize */ +#include <vppinfra/format.h> /* for unformat_input_t */ + +/** \file + Linear Congruential Random Number Generator + + This specific random number generator is described in + "Numerical Recipes in C", 2nd edition, page 284. If you need + random numbers with really excellent statistics, take a look + at Chapter 7... + + By definition, a linear congruential random number generator + is of the form: rand[i+1] = a*rand[i] + c (mod m) for specific + values of (a,c,m). + + In this case, choose m = 2**32 and use the low-order 32-bits of + the 64-bit product a*N[i]. Knuth suggests the use of a=1664525, + H.W. Lewis has tested C=1013904223 extensively. This routine is + reputedly as good as any 32-bit LCRN, and costs only a single + multiply-add. + + Several variants: 32/64-bit, machine word width, + f64 on the closed interval [0,1]. +*/ + +/** \brief 32-bit random number generator */ +always_inline u32 +random_u32 (u32 * seed) +{ + *seed = (1664525 * *seed) + 1013904223; + return *seed; +} + +/* External test routine. */ +int test_random_main (unformat_input_t * input); + +/** \brief Maximum value returned by random_u32() */ +always_inline u32 +random_u32_max (void) +{ + return 0xffffffff; +} + +#ifdef CLIB_UNIX + +#include <unistd.h> /* for getpid */ + +/** \brief Default random seed (unix/linux user-mode) */ +always_inline uword +random_default_seed (void) +{ + return getpid (); +} + +#endif + +#ifdef CLIB_LINUX_KERNEL + +#include <linux/sched.h> /* for jiffies */ + +/** \brief Default random seed (Linux kernel) */ +always_inline uword +random_default_seed (void) +{ + return jiffies; +} + +#endif + +#ifdef CLIB_STANDALONE +extern u32 standalone_random_default_seed; + +always_inline u32 +random_default_seed (void) +{ + return standalone_random_default_seed; +} +#endif + +/** \brief 64-bit random number generator + * Again, constants courtesy of Donald Knuth. + * + */ +always_inline u64 +random_u64 (u64 * seed) +{ + *seed = 6364136223846793005ULL * *seed + 1442695040888963407ULL; + return *seed; +} + +/** \brief machine word size random number generator */ + +always_inline uword +random_uword (u32 * seed) +{ + if (sizeof (uword) == sizeof (u64)) + return random_u64 ((u64 *) seed); + else + return random_u32 (seed); +} + +/** \brief Generate f64 random number in the interval [0,1] */ +always_inline f64 +random_f64 (u32 * seed) +{ + return (f64) random_u32 (seed) / (f64) random_u32_max (); +} + +/** \brief Generate random character vector + + From the alphabet a-z, lower case. + Returns a vector of the supplied length which is NOT guaranteed to be + NULL-terminated. FIXME? +*/ +always_inline u8 * +random_string (u32 * seed, uword len) +{ + u8 *alphabet = (u8 *) "abcdefghijklmnopqrstuvwxyz"; + u8 *s = 0; + word i; + + vec_resize (s, len); + for (i = 0; i < len; i++) + s[i] = alphabet[random_u32 (seed) % 26]; + + return s; +} + +#endif /* included_random_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/random_buffer.c b/src/vppinfra/random_buffer.c new file mode 100644 index 00000000..df036980 --- /dev/null +++ b/src/vppinfra/random_buffer.c @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/random_buffer.h> + +/* Fill random buffer. */ +void +clib_random_buffer_fill (clib_random_buffer_t * b, uword n_words) +{ + uword *w, n = n_words; + + if (n < 256) + n = 256; + + n = round_pow2 (n, 2 << ISAAC_LOG2_SIZE); + + vec_add2 (b->buffer, w, n); + do + { + isaac2 (b->ctx, w); + w += 2 * ISAAC_SIZE; + n -= 2 * ISAAC_SIZE; + } + while (n > 0); +} + +void +clib_random_buffer_init (clib_random_buffer_t * b, uword seed) +{ + uword i, j; + + memset (b, 0, sizeof (b[0])); + + /* Seed ISAAC. */ + for (i = 0; i < ARRAY_LEN (b->ctx); i++) + { + uword s[ISAAC_SIZE]; + + for (j = 0; j < ARRAY_LEN (s); j++) + s[j] = ARRAY_LEN (b->ctx) * (seed + j) + i; + + isaac_init (&b->ctx[i], s); + } +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/random_buffer.h b/src/vppinfra/random_buffer.h new file mode 100644 index 00000000..eb318548 --- /dev/null +++ b/src/vppinfra/random_buffer.h @@ -0,0 +1,118 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_random_buffer_h +#define included_clib_random_buffer_h + +#include <vppinfra/clib.h> +#include <vppinfra/random_isaac.h> + +typedef struct +{ + /* Two parallel ISAAC contexts for speed. */ + isaac_t ctx[2]; + + /* Random buffer. */ + uword *buffer; + + /* Cache up to 1 word worth of bytes for random data + less than one word at a time. */ + uword n_cached_bytes; + + union + { + u8 cached_bytes[sizeof (uword)]; + uword cached_word; + }; +} +clib_random_buffer_t; + +always_inline void +clib_random_buffer_free (clib_random_buffer_t * b) +{ + vec_free (b->buffer); +} + +/* Fill random buffer. */ +void clib_random_buffer_fill (clib_random_buffer_t * b, uword n_words); + +/* Initialize random buffer. */ +void clib_random_buffer_init (clib_random_buffer_t * b, uword seed); + +/* Returns word aligned random data, possibly filling buffer. */ +always_inline void * +clib_random_buffer_get_data (clib_random_buffer_t * b, uword n_bytes) +{ + uword n_words, i, l; + + l = b->n_cached_bytes; + if (n_bytes <= l) + { + b->n_cached_bytes = l - n_bytes; + return &b->cached_bytes[l]; + } + + n_words = n_bytes / sizeof (uword); + if (n_bytes % sizeof (uword)) + n_words++; + + /* Enough random words left? */ + if (PREDICT_FALSE (n_words > vec_len (b->buffer))) + clib_random_buffer_fill (b, n_words); + + i = vec_len (b->buffer) - n_words; + _vec_len (b->buffer) = i; + + if (n_bytes < sizeof (uword)) + { + b->cached_word = b->buffer[i]; + b->n_cached_bytes = sizeof (uword) - n_bytes; + return b->cached_bytes; + } + else + return b->buffer + i; +} + +#endif /* included_clib_random_buffer_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/random_isaac.c b/src/vppinfra/random_isaac.c new file mode 100644 index 00000000..6f00fc32 --- /dev/null +++ b/src/vppinfra/random_isaac.c @@ -0,0 +1,434 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + ------------------------------------------------------------------------------ + By Bob Jenkins, 1996, Public Domain + MODIFIED: + 960327: Creation (addition of randinit, really) + 970719: use context, not global variables, for internal state + 980324: renamed seed to flag + 980605: recommend ISAAC_LOG2_SIZE=4 for noncryptography. + 010626: note this is public domain + ------------------------------------------------------------------------------ + + Modified for CLIB by Eliot Dresselhaus. + Dear Bob, Thanks for all the great work. - Eliot + + modifications copyright (c) 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +/* ISAAC is Bob Jenkins' random number generator. + http://burtleburtle.net/bob/rand/isaacafa.html */ + +#include <vppinfra/random_isaac.h> + +#if uword_bits != 32 && uword_bits != 64 +#error "isaac only works for 32 or 64 bit words" +#endif + +#if uword_bits == 32 + +#define ind32(mm,x) (*(u32 *)((u8 *)(mm) + ((x) & ((ISAAC_SIZE-1)<<2)))) +#define rngstep32(mix,a,b,mm,m,m2,r,x,y) \ +{ \ + x = *m; \ + a = (a^(mix)) + *(m2++); \ + *(m++) = y = ind32(mm,x) + a + b; \ + *(r++) = b = ind32(mm,y>>ISAAC_LOG2_SIZE) + x; \ +} + +void +isaac (isaac_t * ctx, uword * results) +{ + u32 a, b, c, x, y, *m, *mm, *m2, *r, *mend; + + mm = ctx->memory; + r = results; + a = ctx->a; + b = ctx->b; + c = ctx->c; + + b += ++c; + mend = m2 = mm + ARRAY_LEN (ctx->memory) / 2; + m = mm; + while (m < mend) + { + rngstep32 (a << 13, a, b, mm, m, m2, r, x, y); + rngstep32 (a >> 6, a, b, mm, m, m2, r, x, y); + rngstep32 (a << 2, a, b, mm, m, m2, r, x, y); + rngstep32 (a >> 16, a, b, mm, m, m2, r, x, y); + } + + m2 = mm; + while (m2 < mend) + { + rngstep32 (a << 13, a, b, mm, m, m2, r, x, y); + rngstep32 (a >> 6, a, b, mm, m, m2, r, x, y); + rngstep32 (a << 2, a, b, mm, m, m2, r, x, y); + rngstep32 (a >> 16, a, b, mm, m, m2, r, x, y); + } + + ctx->a = a; + ctx->b = b; + ctx->c = c; +} + +/* Perform 2 isaac runs with different contexts simultaneously. */ +void +isaac2 (isaac_t * ctx, uword * results) +{ +#define _(n) \ + u32 a##n, b##n, c##n, x##n, y##n, * m##n, * mm##n, * m2##n, * r##n, * mend##n + + _(0); + _(1); + (void) mend1; /* "set but unused variable" error on mend1 with gcc 4.9 */ +#undef _ + +#define _(n) \ +do { \ + mm##n = ctx[(n)].memory; \ + r##n = results + (n) * ISAAC_SIZE; \ + a##n = ctx[(n)].a; \ + b##n = ctx[(n)].b; \ + c##n = ctx[(n)].c; \ + b##n += ++c##n; \ + mend##n = m2##n = mm##n + ARRAY_LEN (ctx[(n)].memory) / 2; \ + m##n = mm##n; \ +} while (0) + + _(0); + _(1); + +#undef _ + + while (m0 < mend0) + { + rngstep32 (a0 << 13, a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep32 (a1 << 13, a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep32 (a0 >> 6, a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep32 (a1 >> 6, a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep32 (a0 << 2, a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep32 (a1 << 2, a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep32 (a0 >> 16, a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep32 (a1 >> 16, a1, b1, mm1, m1, m21, r1, x1, y1); + } + + m20 = mm0; + m21 = mm1; + while (m20 < mend0) + { + rngstep32 (a0 << 13, a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep32 (a1 << 13, a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep32 (a0 >> 6, a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep32 (a1 >> 6, a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep32 (a0 << 2, a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep32 (a1 << 2, a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep32 (a0 >> 16, a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep32 (a1 >> 16, a1, b1, mm1, m1, m21, r1, x1, y1); + } + + ctx[0].a = a0; + ctx[0].b = b0; + ctx[0].c = c0; + ctx[1].a = a1; + ctx[1].b = b1; + ctx[1].c = c1; +} + +#define mix32(a,b,c,d,e,f,g,h) \ +{ \ + a^=b<<11; d+=a; b+=c; \ + b^=c>>2; e+=b; c+=d; \ + c^=d<<8; f+=c; d+=e; \ + d^=e>>16; g+=d; e+=f; \ + e^=f<<10; h+=e; f+=g; \ + f^=g>>4; a+=f; g+=h; \ + g^=h<<8; b+=g; h+=a; \ + h^=a>>9; c+=h; a+=b; \ +} + +void +isaac_init (isaac_t * ctx, uword * seeds) +{ + word i; + u32 a, b, c, d, e, f, g, h, *m, *r; + + ctx->a = ctx->b = ctx->c = 0; + m = ctx->memory; + r = seeds; + + a = b = c = d = e = f = g = h = 0x9e3779b9; /* the golden ratio */ + + for (i = 0; i < 4; ++i) /* scramble it */ + mix32 (a, b, c, d, e, f, g, h); + + /* initialize using the contents of r[] as the seed */ + for (i = 0; i < ISAAC_SIZE; i += 8) + { + a += r[i]; + b += r[i + 1]; + c += r[i + 2]; + d += r[i + 3]; + e += r[i + 4]; + f += r[i + 5]; + g += r[i + 6]; + h += r[i + 7]; + mix32 (a, b, c, d, e, f, g, h); + m[i] = a; + m[i + 1] = b; + m[i + 2] = c; + m[i + 3] = d; + m[i + 4] = e; + m[i + 5] = f; + m[i + 6] = g; + m[i + 7] = h; + } + + /* do a second pass to make all of the seed affect all of m */ + for (i = 0; i < ISAAC_SIZE; i += 8) + { + a += m[i]; + b += m[i + 1]; + c += m[i + 2]; + d += m[i + 3]; + e += m[i + 4]; + f += m[i + 5]; + g += m[i + 6]; + h += m[i + 7]; + mix32 (a, b, c, d, e, f, g, h); + m[i] = a; + m[i + 1] = b; + m[i + 2] = c; + m[i + 3] = d; + m[i + 4] = e; + m[i + 5] = f; + m[i + 6] = g; + m[i + 7] = h; + } +} +#endif /* uword_bits == 32 */ + +#if uword_bits == 64 + +#define ind64(mm,x) (*(u64 *)((u8 *)(mm) + ((x) & ((ISAAC_SIZE-1)<<3)))) +#define rngstep64(mix,a,b,mm,m,m2,r,x,y) \ +{ \ + x = *m; \ + a = (mix) + *(m2++); \ + *(m++) = y = ind64(mm,x) + a + b; \ + *(r++) = b = ind64(mm,y>>ISAAC_LOG2_SIZE) + x; \ +} + +void +isaac (isaac_t * ctx, uword * results) +{ + u64 a, b, c, x, y, *m, *mm, *m2, *r, *mend; + + mm = ctx->memory; + r = results; + a = ctx->a; + b = ctx->b; + c = ctx->c; + + b += ++c; + mend = m2 = mm + ARRAY_LEN (ctx->memory) / 2; + m = mm; + while (m < mend) + { + rngstep64 (~(a ^ (a << 21)), a, b, mm, m, m2, r, x, y); + rngstep64 (a ^ (a >> 5), a, b, mm, m, m2, r, x, y); + rngstep64 (a ^ (a << 12), a, b, mm, m, m2, r, x, y); + rngstep64 (a ^ (a >> 33), a, b, mm, m, m2, r, x, y); + } + + m2 = mm; + while (m2 < mend) + { + rngstep64 (~(a ^ (a << 21)), a, b, mm, m, m2, r, x, y); + rngstep64 (a ^ (a >> 5), a, b, mm, m, m2, r, x, y); + rngstep64 (a ^ (a << 12), a, b, mm, m, m2, r, x, y); + rngstep64 (a ^ (a >> 33), a, b, mm, m, m2, r, x, y); + } + + ctx->a = a; + ctx->b = b; + ctx->c = c; +} + +/* Perform 2 isaac runs with different contexts simultaneously. */ +void +isaac2 (isaac_t * ctx, uword * results) +{ +#define _(n) \ + u64 a##n, b##n, c##n, x##n, y##n, * m##n, * mm##n, * m2##n, * r##n, * mend##n + + _(0); + _(1); + +#undef _ + +#define _(n) \ +do { \ + mm##n = ctx[(n)].memory; \ + r##n = results + (n) * ISAAC_SIZE; \ + a##n = ctx[(n)].a; \ + b##n = ctx[(n)].b; \ + c##n = ctx[(n)].c; \ + b##n += ++c##n; \ + mend##n = m2##n = mm##n + ARRAY_LEN (ctx[(n)].memory) / 2; \ + m##n = mm##n; \ +} while (0) + + _(0); + _(1); + +#undef _ + + (void) mend1; /* compiler warning */ + + while (m0 < mend0) + { + rngstep64 (~(a0 ^ (a0 << 21)), a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep64 (~(a1 ^ (a1 << 21)), a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep64 (a0 ^ (a0 >> 5), a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep64 (a1 ^ (a1 >> 5), a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep64 (a0 ^ (a0 << 12), a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep64 (a1 ^ (a1 << 12), a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep64 (a0 ^ (a0 >> 33), a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep64 (a1 ^ (a1 >> 33), a1, b1, mm1, m1, m21, r1, x1, y1); + } + + m20 = mm0; + m21 = mm1; + while (m20 < mend0) + { + rngstep64 (~(a0 ^ (a0 << 21)), a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep64 (~(a1 ^ (a1 << 21)), a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep64 (a0 ^ (a0 >> 5), a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep64 (a1 ^ (a1 >> 5), a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep64 (a0 ^ (a0 << 12), a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep64 (a1 ^ (a1 << 12), a1, b1, mm1, m1, m21, r1, x1, y1); + rngstep64 (a0 ^ (a0 >> 33), a0, b0, mm0, m0, m20, r0, x0, y0); + rngstep64 (a1 ^ (a1 >> 33), a1, b1, mm1, m1, m21, r1, x1, y1); + } + + ctx[0].a = a0; + ctx[0].b = b0; + ctx[0].c = c0; + ctx[1].a = a1; + ctx[1].b = b1; + ctx[1].c = c1; +} + +#define mix64(a,b,c,d,e,f,g,h) \ +{ \ + a-=e; f^=h>>9; h+=a; \ + b-=f; g^=a<<9; a+=b; \ + c-=g; h^=b>>23; b+=c; \ + d-=h; a^=c<<15; c+=d; \ + e-=a; b^=d>>14; d+=e; \ + f-=b; c^=e<<20; e+=f; \ + g-=c; d^=f>>17; f+=g; \ + h-=d; e^=g<<14; g+=h; \ +} + +void +isaac_init (isaac_t * ctx, uword * seeds) +{ + word i; + u64 a, b, c, d, e, f, g, h, *m, *r; + + ctx->a = ctx->b = ctx->c = 0; + m = ctx->memory; + r = seeds; + + a = b = c = d = e = f = g = h = 0x9e3779b97f4a7c13LL; /* the golden ratio */ + + for (i = 0; i < 4; ++i) /* scramble it */ + mix64 (a, b, c, d, e, f, g, h); + + for (i = 0; i < ISAAC_SIZE; i += 8) /* fill in mm[] with messy stuff */ + { + a += r[i]; + b += r[i + 1]; + c += r[i + 2]; + d += r[i + 3]; + e += r[i + 4]; + f += r[i + 5]; + g += r[i + 6]; + h += r[i + 7]; + mix64 (a, b, c, d, e, f, g, h); + m[i] = a; + m[i + 1] = b; + m[i + 2] = c; + m[i + 3] = d; + m[i + 4] = e; + m[i + 5] = f; + m[i + 6] = g; + m[i + 7] = h; + } + + /* do a second pass to make all of the seed affect all of mm */ + for (i = 0; i < ISAAC_SIZE; i += 8) + { + a += m[i]; + b += m[i + 1]; + c += m[i + 2]; + d += m[i + 3]; + e += m[i + 4]; + f += m[i + 5]; + g += m[i + 6]; + h += m[i + 7]; + mix64 (a, b, c, d, e, f, g, h); + m[i] = a; + m[i + 1] = b; + m[i + 2] = c; + m[i + 3] = d; + m[i + 4] = e; + m[i + 5] = f; + m[i + 6] = g; + m[i + 7] = h; + } +} +#endif /* uword_bits == 64 */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/random_isaac.h b/src/vppinfra/random_isaac.h new file mode 100644 index 00000000..803fbd62 --- /dev/null +++ b/src/vppinfra/random_isaac.h @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + ------------------------------------------------------------------------------ + By Bob Jenkins, 1996, Public Domain + MODIFIED: + 960327: Creation (addition of randinit, really) + 970719: use context, not global variables, for internal state + 980324: renamed seed to flag + 980605: recommend ISAAC_LOG2_SIZE=4 for noncryptography. + 010626: note this is public domain + ------------------------------------------------------------------------------ + + Modified for CLIB by Eliot Dresselhaus. + Dear Bob, Thanks for all the great work. - Eliot + + modifications copyright (c) 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_random_isaac_h +#define included_random_isaac_h + +#include <vppinfra/clib.h> /* for u32/u64 */ +#include <vppinfra/format.h> /* for unformat_input_t */ + +/* Bob recommends 8 for crypto, 4 for simulations */ +#define ISAAC_LOG2_SIZE (4) +#define ISAAC_SIZE (1 << ISAAC_LOG2_SIZE) + +typedef struct +{ + uword memory[ISAAC_SIZE]; + uword a, b, c; +} isaac_t; + +void isaac (isaac_t * ctx, uword * results); +void isaac2 (isaac_t * ctx, uword * results); +void isaac_init (isaac_t * ctx, uword * results); + +int test_isaac_main (unformat_input_t * input); + +#endif /* included_random_isaac_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/serialize.c b/src/vppinfra/serialize.c new file mode 100644 index 00000000..5d401a08 --- /dev/null +++ b/src/vppinfra/serialize.c @@ -0,0 +1,1254 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +/* Turn data structures into byte streams for saving or transport. */ + +#include <vppinfra/heap.h> +#include <vppinfra/pool.h> +#include <vppinfra/serialize.h> + +void +serialize_64 (serialize_main_t * m, va_list * va) +{ + u64 x = va_arg (*va, u64); + u32 lo, hi; + lo = x; + hi = x >> 32; + serialize_integer (m, lo, sizeof (lo)); + serialize_integer (m, hi, sizeof (hi)); +} + +void +serialize_32 (serialize_main_t * m, va_list * va) +{ + u32 x = va_arg (*va, u32); + serialize_integer (m, x, sizeof (x)); +} + +void +serialize_16 (serialize_main_t * m, va_list * va) +{ + u32 x = va_arg (*va, u32); + serialize_integer (m, x, sizeof (u16)); +} + +void +serialize_8 (serialize_main_t * m, va_list * va) +{ + u32 x = va_arg (*va, u32); + serialize_integer (m, x, sizeof (u8)); +} + +void +unserialize_64 (serialize_main_t * m, va_list * va) +{ + u64 *x = va_arg (*va, u64 *); + u32 lo, hi; + unserialize_integer (m, &lo, sizeof (lo)); + unserialize_integer (m, &hi, sizeof (hi)); + *x = ((u64) hi << 32) | (u64) lo; +} + +void +unserialize_32 (serialize_main_t * m, va_list * va) +{ + u32 *x = va_arg (*va, u32 *); + unserialize_integer (m, x, sizeof (x[0])); +} + +void +unserialize_16 (serialize_main_t * m, va_list * va) +{ + u16 *x = va_arg (*va, u16 *); + u32 t; + unserialize_integer (m, &t, sizeof (x[0])); + x[0] = t; +} + +void +unserialize_8 (serialize_main_t * m, va_list * va) +{ + u8 *x = va_arg (*va, u8 *); + u32 t; + unserialize_integer (m, &t, sizeof (x[0])); + x[0] = t; +} + +void +serialize_f64 (serialize_main_t * m, va_list * va) +{ + f64 x = va_arg (*va, f64); + union + { + f64 f; + u64 i; + } y; + y.f = x; + serialize (m, serialize_64, y.i); +} + +void +serialize_f32 (serialize_main_t * m, va_list * va) +{ + f32 x = va_arg (*va, f64); + union + { + f32 f; + u32 i; + } y; + y.f = x; + serialize_integer (m, y.i, sizeof (y.i)); +} + +void +unserialize_f64 (serialize_main_t * m, va_list * va) +{ + f64 *x = va_arg (*va, f64 *); + union + { + f64 f; + u64 i; + } y; + unserialize (m, unserialize_64, &y.i); + *x = y.f; +} + +void +unserialize_f32 (serialize_main_t * m, va_list * va) +{ + f32 *x = va_arg (*va, f32 *); + union + { + f32 f; + u32 i; + } y; + unserialize_integer (m, &y.i, sizeof (y.i)); + *x = y.f; +} + +void +serialize_cstring (serialize_main_t * m, char *s) +{ + u32 len = s ? strlen (s) : 0; + void *p; + + serialize_likely_small_unsigned_integer (m, len); + if (len > 0) + { + p = serialize_get (m, len); + clib_memcpy (p, s, len); + } +} + +void +unserialize_cstring (serialize_main_t * m, char **s) +{ + char *p, *r = 0; + u32 len; + + len = unserialize_likely_small_unsigned_integer (m); + + /* + * Given broken enough data, we could get len = 0xFFFFFFFF. + * Add one, it overflows, we call vec_new (char, 0), then + * memcpy until we bus error. + */ + if (len > 0 && len != 0xFFFFFFFF) + { + r = vec_new (char, len + 1); + p = unserialize_get (m, len); + clib_memcpy (r, p, len); + + /* Null terminate. */ + r[len] = 0; + } + *s = r; +} + +/* vec_serialize/vec_unserialize helper functions for basic vector types. */ +void +serialize_vec_8 (serialize_main_t * m, va_list * va) +{ + u8 *s = va_arg (*va, u8 *); + u32 n = va_arg (*va, u32); + u8 *p = serialize_get (m, n * sizeof (u8)); + clib_memcpy (p, s, n * sizeof (u8)); +} + +void +unserialize_vec_8 (serialize_main_t * m, va_list * va) +{ + u8 *s = va_arg (*va, u8 *); + u32 n = va_arg (*va, u32); + u8 *p = unserialize_get (m, n); + clib_memcpy (s, p, n); +} + +#define _(n_bits) \ + void serialize_vec_##n_bits (serialize_main_t * m, va_list * va) \ + { \ + u##n_bits * s = va_arg (*va, u##n_bits *); \ + u32 n = va_arg (*va, u32); \ + u##n_bits * p = serialize_get (m, n * sizeof (s[0])); \ + \ + while (n >= 4) \ + { \ + p[0] = clib_host_to_net_u##n_bits (s[0]); \ + p[1] = clib_host_to_net_u##n_bits (s[1]); \ + p[2] = clib_host_to_net_u##n_bits (s[2]); \ + p[3] = clib_host_to_net_u##n_bits (s[3]); \ + s += 4; \ + p += 4; \ + n -= 4; \ + } \ + \ + while (n >= 1) \ + { \ + p[0] = clib_host_to_net_u##n_bits (s[0]); \ + s += 1; \ + p += 1; \ + n -= 1; \ + } \ + } \ + \ + void unserialize_vec_##n_bits (serialize_main_t * m, va_list * va) \ + { \ + u##n_bits * s = va_arg (*va, u##n_bits *); \ + u32 n = va_arg (*va, u32); \ + u##n_bits * p = unserialize_get (m, n * sizeof (s[0])); \ + \ + while (n >= 4) \ + { \ + s[0] = clib_net_to_host_mem_u##n_bits (&p[0]); \ + s[1] = clib_net_to_host_mem_u##n_bits (&p[1]); \ + s[2] = clib_net_to_host_mem_u##n_bits (&p[2]); \ + s[3] = clib_net_to_host_mem_u##n_bits (&p[3]); \ + s += 4; \ + p += 4; \ + n -= 4; \ + } \ + \ + while (n >= 1) \ + { \ + s[0] = clib_net_to_host_mem_u##n_bits (&p[0]); \ + s += 1; \ + p += 1; \ + n -= 1; \ + } \ + } + +_(16); +_(32); +_(64); + +#undef _ + +#define SERIALIZE_VECTOR_CHUNK_SIZE 64 + +void +serialize_vector (serialize_main_t * m, va_list * va) +{ + void *vec = va_arg (*va, void *); + u32 elt_bytes = va_arg (*va, u32); + serialize_function_t *f = va_arg (*va, serialize_function_t *); + u32 l = vec_len (vec); + void *p = vec; + + serialize_integer (m, l, sizeof (l)); + + /* Serialize vector in chunks for cache locality. */ + while (l != 0) + { + u32 n = clib_min (SERIALIZE_VECTOR_CHUNK_SIZE, l); + serialize (m, f, p, n); + l -= n; + p += SERIALIZE_VECTOR_CHUNK_SIZE * elt_bytes; + } +} + +void * +unserialize_vector_ha (serialize_main_t * m, + u32 elt_bytes, + u32 header_bytes, + u32 align, u32 max_length, serialize_function_t * f) +{ + void *v, *p; + u32 l; + + unserialize_integer (m, &l, sizeof (l)); + if (l > max_length) + serialize_error (&m->header, + clib_error_create ("bad vector length %d", l)); + p = v = _vec_resize (0, l, (uword) l * elt_bytes, header_bytes, + /* align */ align); + + while (l != 0) + { + u32 n = clib_min (SERIALIZE_VECTOR_CHUNK_SIZE, l); + unserialize (m, f, p, n); + l -= n; + p += SERIALIZE_VECTOR_CHUNK_SIZE * elt_bytes; + } + return v; +} + +void +unserialize_aligned_vector (serialize_main_t * m, va_list * va) +{ + void **vec = va_arg (*va, void **); + u32 elt_bytes = va_arg (*va, u32); + serialize_function_t *f = va_arg (*va, serialize_function_t *); + u32 align = va_arg (*va, u32); + + *vec = unserialize_vector_ha (m, elt_bytes, + /* header_bytes */ 0, + /* align */ align, + /* max_length */ ~0, + f); +} + +void +unserialize_vector (serialize_main_t * m, va_list * va) +{ + void **vec = va_arg (*va, void **); + u32 elt_bytes = va_arg (*va, u32); + serialize_function_t *f = va_arg (*va, serialize_function_t *); + + *vec = unserialize_vector_ha (m, elt_bytes, + /* header_bytes */ 0, + /* align */ 0, + /* max_length */ ~0, + f); +} + +void +serialize_bitmap (serialize_main_t * m, uword * b) +{ + u32 l, i, n_u32s; + + l = vec_len (b); + n_u32s = l * sizeof (b[0]) / sizeof (u32); + serialize_integer (m, n_u32s, sizeof (n_u32s)); + + /* Send 32 bit words, low-order word first on 64 bit. */ + for (i = 0; i < l; i++) + { + serialize_integer (m, b[i], sizeof (u32)); + if (BITS (uword) == 64) + serialize_integer (m, (u64) b[i] >> (u64) 32, sizeof (u32)); + } +} + +uword * +unserialize_bitmap (serialize_main_t * m) +{ + uword *b = 0; + u32 i, n_u32s; + + unserialize_integer (m, &n_u32s, sizeof (n_u32s)); + if (n_u32s == 0) + return b; + + i = (n_u32s * sizeof (u32) + sizeof (b[0]) - 1) / sizeof (b[0]); + vec_resize (b, i); + for (i = 0; i < n_u32s; i++) + { + u32 data; + unserialize_integer (m, &data, sizeof (u32)); + + /* Low-word is first on 64 bit. */ + if (BITS (uword) == 64) + { + if ((i % 2) == 0) + b[i / 2] |= (u64) data << (u64) 0; + else + b[i / 2] |= (u64) data << (u64) 32; + } + else + { + b[i] = data; + } + } + + return b; +} + +void +serialize_pool (serialize_main_t * m, va_list * va) +{ + void *pool = va_arg (*va, void *); + u32 elt_bytes = va_arg (*va, u32); + serialize_function_t *f = va_arg (*va, serialize_function_t *); + u32 l, lo, hi; + pool_header_t *p; + + l = vec_len (pool); + serialize_integer (m, l, sizeof (u32)); + if (l == 0) + return; + p = pool_header (pool); + + /* No need to send free bitmap. Need to send index vector + to guarantee that unserialized pool will be identical. */ + vec_serialize (m, p->free_indices, serialize_vec_32); + + pool_foreach_region (lo, hi, pool, + serialize (m, f, pool + lo * elt_bytes, hi - lo)); +} + +static void * +unserialize_pool_helper (serialize_main_t * m, + u32 elt_bytes, u32 align, serialize_function_t * f) +{ + void *v; + u32 i, l, lo, hi; + pool_header_t *p; + + unserialize_integer (m, &l, sizeof (l)); + if (l == 0) + { + return 0; + } + + v = _vec_resize (0, l, (uword) l * elt_bytes, sizeof (p[0]), align); + p = pool_header (v); + + vec_unserialize (m, &p->free_indices, unserialize_vec_32); + + /* Construct free bitmap. */ + p->free_bitmap = 0; + for (i = 0; i < vec_len (p->free_indices); i++) + p->free_bitmap = clib_bitmap_ori (p->free_bitmap, p->free_indices[i]); + + pool_foreach_region (lo, hi, v, + unserialize (m, f, v + lo * elt_bytes, hi - lo)); + + return v; +} + +void +unserialize_pool (serialize_main_t * m, va_list * va) +{ + void **result = va_arg (*va, void **); + u32 elt_bytes = va_arg (*va, u32); + serialize_function_t *f = va_arg (*va, serialize_function_t *); + *result = unserialize_pool_helper (m, elt_bytes, /* align */ 0, f); +} + +void +unserialize_aligned_pool (serialize_main_t * m, va_list * va) +{ + void **result = va_arg (*va, void **); + u32 elt_bytes = va_arg (*va, u32); + u32 align = va_arg (*va, u32); + serialize_function_t *f = va_arg (*va, serialize_function_t *); + *result = unserialize_pool_helper (m, elt_bytes, align, f); +} + +static void +serialize_vec_heap_elt (serialize_main_t * m, va_list * va) +{ + heap_elt_t *e = va_arg (*va, heap_elt_t *); + u32 i, n = va_arg (*va, u32); + for (i = 0; i < n; i++) + { + serialize_integer (m, e[i].offset, sizeof (e[i].offset)); + serialize_integer (m, e[i].next, sizeof (e[i].next)); + serialize_integer (m, e[i].prev, sizeof (e[i].prev)); + } +} + +static void +unserialize_vec_heap_elt (serialize_main_t * m, va_list * va) +{ + heap_elt_t *e = va_arg (*va, heap_elt_t *); + u32 i, n = va_arg (*va, u32); + for (i = 0; i < n; i++) + { + unserialize_integer (m, &e[i].offset, sizeof (e[i].offset)); + unserialize_integer (m, &e[i].next, sizeof (e[i].next)); + unserialize_integer (m, &e[i].prev, sizeof (e[i].prev)); + } +} + +void +serialize_heap (serialize_main_t * m, va_list * va) +{ + void *heap = va_arg (*va, void *); + serialize_function_t *f = va_arg (*va, serialize_function_t *); + u32 i, l; + heap_header_t *h; + + l = vec_len (heap); + serialize_integer (m, l, sizeof (u32)); + if (l == 0) + return; + + h = heap_header (heap); + +#define foreach_serialize_heap_header_integer \ + _ (head) _ (tail) _ (used_count) _ (max_len) _ (flags) _ (elt_bytes) + +#define _(f) serialize_integer (m, h->f, sizeof (h->f)); + foreach_serialize_heap_header_integer; +#undef _ + + serialize_integer (m, vec_len (h->free_lists), sizeof (u32)); + for (i = 0; i < vec_len (h->free_lists); i++) + vec_serialize (m, h->free_lists[i], serialize_vec_32); + + vec_serialize (m, h->elts, serialize_vec_heap_elt); + vec_serialize (m, h->small_free_elt_free_index, serialize_vec_32); + vec_serialize (m, h->free_elts, serialize_vec_32); + + /* Serialize data in heap. */ + { + heap_elt_t *e, *end; + e = h->elts + h->head; + end = h->elts + h->tail; + while (1) + { + if (!heap_is_free (e)) + { + void *v = heap + heap_offset (e) * h->elt_bytes; + u32 n = heap_elt_size (heap, e); + serialize (m, f, v, n); + } + if (e == end) + break; + e = heap_next (e); + } + } +} + +void +unserialize_heap (serialize_main_t * m, va_list * va) +{ + void **result = va_arg (*va, void **); + serialize_function_t *f = va_arg (*va, serialize_function_t *); + u32 i, vl, fl; + heap_header_t h; + void *heap; + + unserialize_integer (m, &vl, sizeof (u32)); + if (vl == 0) + { + *result = 0; + return; + } + + memset (&h, 0, sizeof (h)); +#define _(f) unserialize_integer (m, &h.f, sizeof (h.f)); + foreach_serialize_heap_header_integer; +#undef _ + + unserialize_integer (m, &fl, sizeof (u32)); + vec_resize (h.free_lists, fl); + + for (i = 0; i < vec_len (h.free_lists); i++) + vec_unserialize (m, &h.free_lists[i], unserialize_vec_32); + + vec_unserialize (m, &h.elts, unserialize_vec_heap_elt); + vec_unserialize (m, &h.small_free_elt_free_index, unserialize_vec_32); + vec_unserialize (m, &h.free_elts, unserialize_vec_32); + + /* Re-construct used elt bitmap. */ + if (CLIB_DEBUG > 0) + { + heap_elt_t *e; + vec_foreach (e, h.elts) + { + if (!heap_is_free (e)) + h.used_elt_bitmap = clib_bitmap_ori (h.used_elt_bitmap, e - h.elts); + } + } + + heap = *result = _heap_new (vl, h.elt_bytes); + heap_header (heap)[0] = h; + + /* Unserialize data in heap. */ + { + heap_elt_t *e, *end; + e = h.elts + h.head; + end = h.elts + h.tail; + while (1) + { + if (!heap_is_free (e)) + { + void *v = heap + heap_offset (e) * h.elt_bytes; + u32 n = heap_elt_size (heap, e); + unserialize (m, f, v, n); + } + if (e == end) + break; + e = heap_next (e); + } + } +} + +void +serialize_magic (serialize_main_t * m, void *magic, u32 magic_bytes) +{ + void *p; + serialize_integer (m, magic_bytes, sizeof (magic_bytes)); + p = serialize_get (m, magic_bytes); + clib_memcpy (p, magic, magic_bytes); +} + +void +unserialize_check_magic (serialize_main_t * m, void *magic, u32 magic_bytes) +{ + u32 l; + void *d; + + unserialize_integer (m, &l, sizeof (l)); + if (l != magic_bytes) + { + bad: + serialize_error_return (m, "bad magic number"); + } + d = serialize_get (m, magic_bytes); + if (memcmp (magic, d, magic_bytes)) + goto bad; +} + +clib_error_t * +va_serialize (serialize_main_t * sm, va_list * va) +{ + serialize_main_header_t *m = &sm->header; + serialize_function_t *f = va_arg (*va, serialize_function_t *); + clib_error_t *error = 0; + + m->recursion_level += 1; + if (m->recursion_level == 1) + { + uword r = clib_setjmp (&m->error_longjmp, 0); + error = uword_to_pointer (r, clib_error_t *); + } + + if (!error) + f (sm, va); + + m->recursion_level -= 1; + return error; +} + +clib_error_t * +serialize (serialize_main_t * m, ...) +{ + clib_error_t *error; + va_list va; + + va_start (va, m); + error = va_serialize (m, &va); + va_end (va); + return error; +} + +clib_error_t * +unserialize (serialize_main_t * m, ...) +{ + clib_error_t *error; + va_list va; + + va_start (va, m); + error = va_serialize (m, &va); + va_end (va); + return error; +} + +static void * +serialize_write_not_inline (serialize_main_header_t * m, + serialize_stream_t * s, + uword n_bytes_to_write, uword flags) +{ + uword cur_bi, n_left_b, n_left_o; + + ASSERT (s->current_buffer_index <= s->n_buffer_bytes); + cur_bi = s->current_buffer_index; + n_left_b = s->n_buffer_bytes - cur_bi; + n_left_o = vec_len (s->overflow_buffer); + + /* Prepend overflow buffer if present. */ + do + { + if (n_left_o > 0 && n_left_b > 0) + { + uword n = clib_min (n_left_b, n_left_o); + clib_memcpy (s->buffer + cur_bi, s->overflow_buffer, n); + cur_bi += n; + n_left_b -= n; + n_left_o -= n; + if (n_left_o == 0) + _vec_len (s->overflow_buffer) = 0; + else + vec_delete (s->overflow_buffer, n, 0); + } + + /* Call data function when buffer is complete. Data function should + dispatch with current buffer and give us a new one to write more + data into. */ + if (n_left_b == 0) + { + s->current_buffer_index = cur_bi; + m->data_function (m, s); + cur_bi = s->current_buffer_index; + n_left_b = s->n_buffer_bytes - cur_bi; + } + } + while (n_left_o > 0); + + if (n_left_o > 0 || n_left_b < n_bytes_to_write) + { + u8 *r; + vec_add2 (s->overflow_buffer, r, n_bytes_to_write); + return r; + } + else + { + s->current_buffer_index = cur_bi + n_bytes_to_write; + return s->buffer + cur_bi; + } +} + +static void * +serialize_read_not_inline (serialize_main_header_t * m, + serialize_stream_t * s, + uword n_bytes_to_read, uword flags) +{ + uword cur_bi, cur_oi, n_left_b, n_left_o, n_left_to_read; + + ASSERT (s->current_buffer_index <= s->n_buffer_bytes); + + cur_bi = s->current_buffer_index; + cur_oi = s->current_overflow_index; + + n_left_b = s->n_buffer_bytes - cur_bi; + n_left_o = vec_len (s->overflow_buffer) - cur_oi; + + /* Read from overflow? */ + if (n_left_o >= n_bytes_to_read) + { + s->current_overflow_index = cur_oi + n_bytes_to_read; + return vec_elt_at_index (s->overflow_buffer, cur_oi); + } + + /* Reset overflow buffer. */ + if (n_left_o == 0 && s->overflow_buffer) + { + s->current_overflow_index = 0; + _vec_len (s->overflow_buffer) = 0; + } + + n_left_to_read = n_bytes_to_read; + while (n_left_to_read > 0) + { + uword n; + + /* If we don't have enough data between overflow and normal buffer + call read function. */ + if (n_left_o + n_left_b < n_bytes_to_read) + { + /* Save any left over buffer in overflow vector. */ + if (n_left_b > 0) + { + vec_add (s->overflow_buffer, s->buffer + cur_bi, n_left_b); + n_left_o += n_left_b; + n_left_to_read -= n_left_b; + /* Advance buffer to end --- even if + SERIALIZE_FLAG_NO_ADVANCE_CURRENT_BUFFER_INDEX is set. */ + cur_bi = s->n_buffer_bytes; + n_left_b = 0; + } + + if (m->data_function) + { + m->data_function (m, s); + cur_bi = s->current_buffer_index; + n_left_b = s->n_buffer_bytes - cur_bi; + } + } + + /* For first time through loop return if we have enough data + in normal buffer and overflow vector is empty. */ + if (n_left_o == 0 + && n_left_to_read == n_bytes_to_read && n_left_b >= n_left_to_read) + { + s->current_buffer_index = cur_bi + n_bytes_to_read; + return s->buffer + cur_bi; + } + + if (!m->data_function || serialize_stream_is_end_of_stream (s)) + { + /* This can happen for a peek at end of file. + Pad overflow buffer with 0s. */ + vec_resize (s->overflow_buffer, n_left_to_read); + n_left_o += n_left_to_read; + n_left_to_read = 0; + } + else + { + /* Copy from buffer to overflow vector. */ + n = clib_min (n_left_to_read, n_left_b); + vec_add (s->overflow_buffer, s->buffer + cur_bi, n); + cur_bi += n; + n_left_b -= n; + n_left_o += n; + n_left_to_read -= n; + } + } + + s->current_buffer_index = cur_bi; + s->current_overflow_index = cur_oi + n_bytes_to_read; + return vec_elt_at_index (s->overflow_buffer, cur_oi); +} + +void * +serialize_read_write_not_inline (serialize_main_header_t * m, + serialize_stream_t * s, + uword n_bytes, uword flags) +{ + return (((flags & SERIALIZE_FLAG_IS_READ) ? serialize_read_not_inline : + serialize_write_not_inline) (m, s, n_bytes, flags)); +} + +static void +serialize_read_write_close (serialize_main_header_t * m, + serialize_stream_t * s, uword flags) +{ + if (serialize_stream_is_end_of_stream (s)) + return; + + if (flags & SERIALIZE_FLAG_IS_WRITE) + /* "Write" 0 bytes to flush overflow vector. */ + serialize_write_not_inline (m, s, /* n bytes */ 0, flags); + + serialize_stream_set_end_of_stream (s); + + /* Call it one last time to flush buffer and close. */ + m->data_function (m, s); + + vec_free (s->overflow_buffer); +} + +void +serialize_close (serialize_main_t * m) +{ + serialize_read_write_close (&m->header, &m->stream, + SERIALIZE_FLAG_IS_WRITE); +} + +void +unserialize_close (serialize_main_t * m) +{ + serialize_read_write_close (&m->header, &m->stream, SERIALIZE_FLAG_IS_READ); +} + +void +serialize_open_data (serialize_main_t * m, u8 * data, uword n_data_bytes) +{ + memset (m, 0, sizeof (m[0])); + m->stream.buffer = data; + m->stream.n_buffer_bytes = n_data_bytes; +} + +void +unserialize_open_data (serialize_main_t * m, u8 * data, uword n_data_bytes) +{ + serialize_open_data (m, data, n_data_bytes); +} + +static void +serialize_vector_write (serialize_main_header_t * m, serialize_stream_t * s) +{ + if (!serialize_stream_is_end_of_stream (s)) + { + /* Double buffer size. */ + uword l = vec_len (s->buffer); + vec_resize (s->buffer, l > 0 ? l : 64); + s->n_buffer_bytes = vec_len (s->buffer); + } +} + +void +serialize_open_vector (serialize_main_t * m, u8 * vector) +{ + memset (m, 0, sizeof (m[0])); + m->header.data_function = serialize_vector_write; + m->stream.buffer = vector; + m->stream.current_buffer_index = 0; + m->stream.n_buffer_bytes = vec_len (vector); +} + +void * +serialize_close_vector (serialize_main_t * m) +{ + serialize_stream_t *s = &m->stream; + void *result; + + serialize_close (m); /* frees overflow buffer */ + + if (s->buffer) + _vec_len (s->buffer) = s->current_buffer_index; + result = s->buffer; + memset (m, 0, sizeof (m[0])); + return result; +} + +void +serialize_multiple_1 (serialize_main_t * m, + void *data, uword data_stride, uword n_data) +{ + u8 *d = data; + u8 *p; + uword n_left = n_data; + + while (n_left >= 4) + { + p = serialize_get (m, 4 * sizeof (d[0])); + p[0] = d[0 * data_stride]; + p[1] = d[1 * data_stride]; + p[2] = d[2 * data_stride]; + p[3] = d[3 * data_stride]; + n_left -= 4; + d += 4 * data_stride; + } + + if (n_left > 0) + { + p = serialize_get (m, n_left * sizeof (p[0])); + while (n_left > 0) + { + p[0] = d[0]; + p += 1; + d += 1 * data_stride; + n_left -= 1; + } + } +} + +void +serialize_multiple_2 (serialize_main_t * m, + void *data, uword data_stride, uword n_data) +{ + void *d = data; + u16 *p; + uword n_left = n_data; + + while (n_left >= 4) + { + p = serialize_get (m, 4 * sizeof (p[0])); + clib_mem_unaligned (p + 0, u16) = + clib_host_to_net_mem_u16 (d + 0 * data_stride); + clib_mem_unaligned (p + 1, u16) = + clib_host_to_net_mem_u16 (d + 1 * data_stride); + clib_mem_unaligned (p + 2, u16) = + clib_host_to_net_mem_u16 (d + 2 * data_stride); + clib_mem_unaligned (p + 3, u16) = + clib_host_to_net_mem_u16 (d + 3 * data_stride); + n_left -= 4; + d += 4 * data_stride; + } + + if (n_left > 0) + { + p = serialize_get (m, n_left * sizeof (p[0])); + while (n_left > 0) + { + clib_mem_unaligned (p + 0, u16) = + clib_host_to_net_mem_u16 (d + 0 * data_stride); + p += 1; + d += 1 * data_stride; + n_left -= 1; + } + } +} + +void +serialize_multiple_4 (serialize_main_t * m, + void *data, uword data_stride, uword n_data) +{ + void *d = data; + u32 *p; + uword n_left = n_data; + + while (n_left >= 4) + { + p = serialize_get (m, 4 * sizeof (p[0])); + clib_mem_unaligned (p + 0, u32) = + clib_host_to_net_mem_u32 (d + 0 * data_stride); + clib_mem_unaligned (p + 1, u32) = + clib_host_to_net_mem_u32 (d + 1 * data_stride); + clib_mem_unaligned (p + 2, u32) = + clib_host_to_net_mem_u32 (d + 2 * data_stride); + clib_mem_unaligned (p + 3, u32) = + clib_host_to_net_mem_u32 (d + 3 * data_stride); + n_left -= 4; + d += 4 * data_stride; + } + + if (n_left > 0) + { + p = serialize_get (m, n_left * sizeof (p[0])); + while (n_left > 0) + { + clib_mem_unaligned (p + 0, u32) = + clib_host_to_net_mem_u32 (d + 0 * data_stride); + p += 1; + d += 1 * data_stride; + n_left -= 1; + } + } +} + +void +unserialize_multiple_1 (serialize_main_t * m, + void *data, uword data_stride, uword n_data) +{ + u8 *d = data; + u8 *p; + uword n_left = n_data; + + while (n_left >= 4) + { + p = unserialize_get (m, 4 * sizeof (d[0])); + d[0 * data_stride] = p[0]; + d[1 * data_stride] = p[1]; + d[2 * data_stride] = p[2]; + d[3 * data_stride] = p[3]; + n_left -= 4; + d += 4 * data_stride; + } + + if (n_left > 0) + { + p = unserialize_get (m, n_left * sizeof (p[0])); + while (n_left > 0) + { + d[0] = p[0]; + p += 1; + d += 1 * data_stride; + n_left -= 1; + } + } +} + +void +unserialize_multiple_2 (serialize_main_t * m, + void *data, uword data_stride, uword n_data) +{ + void *d = data; + u16 *p; + uword n_left = n_data; + + while (n_left >= 4) + { + p = unserialize_get (m, 4 * sizeof (p[0])); + clib_mem_unaligned (d + 0 * data_stride, u16) = + clib_net_to_host_mem_u16 (p + 0); + clib_mem_unaligned (d + 1 * data_stride, u16) = + clib_net_to_host_mem_u16 (p + 1); + clib_mem_unaligned (d + 2 * data_stride, u16) = + clib_net_to_host_mem_u16 (p + 2); + clib_mem_unaligned (d + 3 * data_stride, u16) = + clib_net_to_host_mem_u16 (p + 3); + n_left -= 4; + d += 4 * data_stride; + } + + if (n_left > 0) + { + p = unserialize_get (m, n_left * sizeof (p[0])); + while (n_left > 0) + { + clib_mem_unaligned (d + 0 * data_stride, u16) = + clib_net_to_host_mem_u16 (p + 0); + p += 1; + d += 1 * data_stride; + n_left -= 1; + } + } +} + +void +unserialize_multiple_4 (serialize_main_t * m, + void *data, uword data_stride, uword n_data) +{ + void *d = data; + u32 *p; + uword n_left = n_data; + + while (n_left >= 4) + { + p = unserialize_get (m, 4 * sizeof (p[0])); + clib_mem_unaligned (d + 0 * data_stride, u32) = + clib_net_to_host_mem_u32 (p + 0); + clib_mem_unaligned (d + 1 * data_stride, u32) = + clib_net_to_host_mem_u32 (p + 1); + clib_mem_unaligned (d + 2 * data_stride, u32) = + clib_net_to_host_mem_u32 (p + 2); + clib_mem_unaligned (d + 3 * data_stride, u32) = + clib_net_to_host_mem_u32 (p + 3); + n_left -= 4; + d += 4 * data_stride; + } + + if (n_left > 0) + { + p = unserialize_get (m, n_left * sizeof (p[0])); + while (n_left > 0) + { + clib_mem_unaligned (d + 0 * data_stride, u32) = + clib_net_to_host_mem_u32 (p + 0); + p += 1; + d += 1 * data_stride; + n_left -= 1; + } + } +} + +#ifdef CLIB_UNIX + +#include <unistd.h> +#include <fcntl.h> + +static void +unix_file_write (serialize_main_header_t * m, serialize_stream_t * s) +{ + int fd, n; + + fd = s->data_function_opaque; + n = write (fd, s->buffer, s->current_buffer_index); + if (n < 0) + { + if (!unix_error_is_fatal (errno)) + n = 0; + else + serialize_error (m, clib_error_return_unix (0, "write")); + } + if (n == s->current_buffer_index) + _vec_len (s->buffer) = 0; + else + vec_delete (s->buffer, n, 0); + s->current_buffer_index = vec_len (s->buffer); +} + +static void +unix_file_read (serialize_main_header_t * m, serialize_stream_t * s) +{ + int fd, n; + + fd = s->data_function_opaque; + n = read (fd, s->buffer, vec_len (s->buffer)); + if (n < 0) + { + if (!unix_error_is_fatal (errno)) + n = 0; + else + serialize_error (m, clib_error_return_unix (0, "read")); + } + else if (n == 0) + serialize_stream_set_end_of_stream (s); + s->current_buffer_index = 0; + s->n_buffer_bytes = n; +} + +static void +serialize_open_unix_file_descriptor_helper (serialize_main_t * m, int fd, + uword is_read) +{ + memset (m, 0, sizeof (m[0])); + vec_resize (m->stream.buffer, 4096); + + if (!is_read) + { + m->stream.n_buffer_bytes = vec_len (m->stream.buffer); + _vec_len (m->stream.buffer) = 0; + } + + m->header.data_function = is_read ? unix_file_read : unix_file_write; + m->stream.data_function_opaque = fd; +} + +void +serialize_open_unix_file_descriptor (serialize_main_t * m, int fd) +{ + serialize_open_unix_file_descriptor_helper (m, fd, /* is_read */ 0); +} + +void +unserialize_open_unix_file_descriptor (serialize_main_t * m, int fd) +{ + serialize_open_unix_file_descriptor_helper (m, fd, /* is_read */ 1); +} + +static clib_error_t * +serialize_open_unix_file_helper (serialize_main_t * m, char *file, + uword is_read) +{ + int fd, mode; + + mode = is_read ? O_RDONLY : O_RDWR | O_CREAT | O_TRUNC; + fd = open (file, mode, 0666); + if (fd < 0) + return clib_error_return_unix (0, "open `%s'", file); + + serialize_open_unix_file_descriptor_helper (m, fd, is_read); + return 0; +} + +clib_error_t * +serialize_open_unix_file (serialize_main_t * m, char *file) +{ + return serialize_open_unix_file_helper (m, file, /* is_read */ 0); +} + +clib_error_t * +unserialize_open_unix_file (serialize_main_t * m, char *file) +{ + return serialize_open_unix_file_helper (m, file, /* is_read */ 1); +} + +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/serialize.h b/src/vppinfra/serialize.h new file mode 100644 index 00000000..6cc2372e --- /dev/null +++ b/src/vppinfra/serialize.h @@ -0,0 +1,443 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_serialize_h +#define included_clib_serialize_h + +#include <stdarg.h> +#include <vppinfra/byte_order.h> +#include <vppinfra/types.h> +#include <vppinfra/vec.h> +#include <vppinfra/longjmp.h> + +struct serialize_main_header_t; +struct serialize_stream_t; + +typedef void (serialize_data_function_t) (struct serialize_main_header_t * h, + struct serialize_stream_t * s); + +typedef struct serialize_stream_t +{ + /* Current data buffer being serialized/unserialized. */ + u8 *buffer; + + /* Size of buffer in bytes. */ + u32 n_buffer_bytes; + + /* Current index into buffer. */ + u32 current_buffer_index; + + /* Overflow buffer for when there is not enough room at the end of + buffer to hold serialized/unserialized data. */ + u8 *overflow_buffer; + + /* Current index in overflow buffer for reads. */ + u32 current_overflow_index; + + u32 flags; +#define SERIALIZE_END_OF_STREAM (1 << 0) + + uword data_function_opaque; + + u32 opaque[64 - 4 * sizeof (u32) - 1 * sizeof (uword) - + 2 * sizeof (void *)]; +} serialize_stream_t; + +always_inline void +serialize_stream_set_end_of_stream (serialize_stream_t * s) +{ + s->flags |= SERIALIZE_END_OF_STREAM; +} + +always_inline uword +serialize_stream_is_end_of_stream (serialize_stream_t * s) +{ + return (s->flags & SERIALIZE_END_OF_STREAM) != 0; +} + +typedef struct serialize_main_header_t +{ + u32 recursion_level; + + /* Data callback function and opaque data. */ + serialize_data_function_t *data_function; + + /* Error if signaled by data function. */ + clib_error_t *error; + + /* Exit unwind point if error occurs. */ + clib_longjmp_t error_longjmp; +} serialize_main_header_t; + +always_inline void +serialize_error (serialize_main_header_t * m, clib_error_t * error) +{ + clib_longjmp (&m->error_longjmp, pointer_to_uword (error)); +} + +#define serialize_error_return(m,args...) \ + serialize_error (&(m)->header, clib_error_return (0, args)) + +void *serialize_read_write_not_inline (serialize_main_header_t * m, + serialize_stream_t * s, + uword n_bytes, uword flags); + +#define SERIALIZE_FLAG_IS_READ (1 << 0) +#define SERIALIZE_FLAG_IS_WRITE (1 << 1) + +always_inline void * +serialize_stream_read_write (serialize_main_header_t * header, + serialize_stream_t * s, + uword n_bytes, uword flags) +{ + uword i, j, l; + + l = vec_len (s->overflow_buffer); + i = s->current_buffer_index; + j = i + n_bytes; + s->current_buffer_index = j; + if (l == 0 && j <= s->n_buffer_bytes) + { + return s->buffer + i; + } + else + { + s->current_buffer_index = i; + return serialize_read_write_not_inline (header, s, n_bytes, flags); + } +} + +typedef struct +{ + serialize_main_header_t header; + serialize_stream_t stream; +} serialize_main_t; + +always_inline void +serialize_set_end_of_stream (serialize_main_t * m) +{ + serialize_stream_set_end_of_stream (&m->stream); +} + +always_inline uword +serialize_is_end_of_stream (serialize_main_t * m) +{ + return serialize_stream_is_end_of_stream (&m->stream); +} + +typedef struct +{ + serialize_main_header_t header; + serialize_stream_t *streams; +} serialize_multiple_main_t; + +typedef void (serialize_function_t) (serialize_main_t * m, va_list * va); + +always_inline void * +unserialize_get (serialize_main_t * m, uword n_bytes) +{ + return serialize_stream_read_write (&m->header, &m->stream, n_bytes, + SERIALIZE_FLAG_IS_READ); +} + +always_inline void * +serialize_get (serialize_main_t * m, uword n_bytes) +{ + return serialize_stream_read_write (&m->header, &m->stream, n_bytes, + SERIALIZE_FLAG_IS_WRITE); +} + +always_inline void +serialize_integer (serialize_main_t * m, u64 x, u32 n_bytes) +{ + u8 *p = serialize_get (m, n_bytes); + if (n_bytes == 1) + p[0] = x; + else if (n_bytes == 2) + clib_mem_unaligned (p, u16) = clib_host_to_net_u16 (x); + else if (n_bytes == 4) + clib_mem_unaligned (p, u32) = clib_host_to_net_u32 (x); + else if (n_bytes == 8) + clib_mem_unaligned (p, u64) = clib_host_to_net_u64 (x); + else + ASSERT (0); +} + +always_inline void +unserialize_integer (serialize_main_t * m, void *x, u32 n_bytes) +{ + u8 *p = unserialize_get (m, n_bytes); + if (n_bytes == 1) + *(u8 *) x = p[0]; + else if (n_bytes == 2) + *(u16 *) x = clib_net_to_host_unaligned_mem_u16 ((u16 *) p); + else if (n_bytes == 4) + *(u32 *) x = clib_net_to_host_unaligned_mem_u32 ((u32 *) p); + else if (n_bytes == 8) + *(u64 *) x = clib_net_to_host_unaligned_mem_u64 ((u64 *) p); + else + ASSERT (0); +} + +/* As above but tries to be more compact. */ +always_inline void +serialize_likely_small_unsigned_integer (serialize_main_t * m, u64 x) +{ + u64 r = x; + u8 *p; + + /* Low bit set means it fits into 1 byte. */ + if (r < (1 << 7)) + { + p = serialize_get (m, 1); + p[0] = 1 + 2 * r; + return; + } + + /* Low 2 bits 1 0 means it fits into 2 bytes. */ + r -= (1 << 7); + if (r < (1 << 14)) + { + p = serialize_get (m, 2); + clib_mem_unaligned (p, u16) = clib_host_to_little_u16 (4 * r + 2); + return; + } + + r -= (1 << 14); + if (r < (1 << 29)) + { + p = serialize_get (m, 4); + clib_mem_unaligned (p, u32) = clib_host_to_little_u32 (8 * r + 4); + return; + } + + p = serialize_get (m, 9); + p[0] = 0; /* Only low 3 bits are used. */ + clib_mem_unaligned (p + 1, u64) = clib_host_to_little_u64 (x); +} + +always_inline u64 +unserialize_likely_small_unsigned_integer (serialize_main_t * m) +{ + u8 *p = unserialize_get (m, 1); + u64 r; + u32 y = p[0]; + + if (y & 1) + return y / 2; + + r = 1 << 7; + if (y & 2) + { + p = unserialize_get (m, 1); + r += (y / 4) + (p[0] << 6); + return r; + } + + r += 1 << 14; + if (y & 4) + { + p = unserialize_get (m, 3); + r += ((y / 8) + + (p[0] << (5 + 8 * 0)) + + (p[1] << (5 + 8 * 1)) + (p[2] << (5 + 8 * 2))); + return r; + } + + p = unserialize_get (m, 8); + r = clib_mem_unaligned (p, u64); + r = clib_little_to_host_u64 (r); + + return r; +} + +always_inline void +serialize_likely_small_signed_integer (serialize_main_t * m, i64 s) +{ + u64 u = s < 0 ? -(2 * s + 1) : 2 * s; + serialize_likely_small_unsigned_integer (m, u); +} + +always_inline i64 +unserialize_likely_small_signed_integer (serialize_main_t * m) +{ + u64 u = unserialize_likely_small_unsigned_integer (m); + i64 s = u / 2; + return (u & 1) ? -s : s; +} + +void +serialize_multiple_1 (serialize_main_t * m, + void *data, uword data_stride, uword n_data); +void +serialize_multiple_2 (serialize_main_t * m, + void *data, uword data_stride, uword n_data); +void +serialize_multiple_4 (serialize_main_t * m, + void *data, uword data_stride, uword n_data); + +void +unserialize_multiple_1 (serialize_main_t * m, + void *data, uword data_stride, uword n_data); +void +unserialize_multiple_2 (serialize_main_t * m, + void *data, uword data_stride, uword n_data); +void +unserialize_multiple_4 (serialize_main_t * m, + void *data, uword data_stride, uword n_data); + +always_inline void +serialize_multiple (serialize_main_t * m, + void *data, + uword n_data_bytes, uword data_stride, uword n_data) +{ + if (n_data_bytes == 1) + serialize_multiple_1 (m, data, data_stride, n_data); + else if (n_data_bytes == 2) + serialize_multiple_2 (m, data, data_stride, n_data); + else if (n_data_bytes == 4) + serialize_multiple_4 (m, data, data_stride, n_data); + else + ASSERT (0); +} + +always_inline void +unserialize_multiple (serialize_main_t * m, + void *data, + uword n_data_bytes, uword data_stride, uword n_data) +{ + if (n_data_bytes == 1) + unserialize_multiple_1 (m, data, data_stride, n_data); + else if (n_data_bytes == 2) + unserialize_multiple_2 (m, data, data_stride, n_data); + else if (n_data_bytes == 4) + unserialize_multiple_4 (m, data, data_stride, n_data); + else + ASSERT (0); +} + +/* Basic types. */ +serialize_function_t serialize_64, unserialize_64; +serialize_function_t serialize_32, unserialize_32; +serialize_function_t serialize_16, unserialize_16; +serialize_function_t serialize_8, unserialize_8; +serialize_function_t serialize_f64, unserialize_f64; +serialize_function_t serialize_f32, unserialize_f32; + +/* Basic vector types. */ +serialize_function_t serialize_vec_8, unserialize_vec_8; +serialize_function_t serialize_vec_16, unserialize_vec_16; +serialize_function_t serialize_vec_32, unserialize_vec_32; +serialize_function_t serialize_vec_64, unserialize_vec_64; + +/* Serialize generic vectors. */ +serialize_function_t serialize_vector, unserialize_vector, + unserialize_aligned_vector; + +#define vec_serialize(m,v,f) \ + serialize ((m), serialize_vector, (v), sizeof ((v)[0]), (f)) + +#define vec_unserialize(m,v,f) \ + unserialize ((m), unserialize_vector, (v), sizeof ((*(v))[0]), (f)) + +#define vec_unserialize_aligned(m,v,f) \ + unserialize ((m), unserialize_aligned_vector, (v), sizeof ((*(v))[0]), (f)) + +/* Serialize pools. */ +serialize_function_t serialize_pool, unserialize_pool, + unserialize_aligned_pool; + +#define pool_serialize(m,v,f) \ + serialize ((m), serialize_pool, (v), sizeof ((v)[0]), (f)) + +#define pool_unserialize(m,v,f) \ + unserialize ((m), unserialize_pool, (v), sizeof ((*(v))[0]), (f)) + +#define pool_unserialize_aligned(m,v,a,f) \ + unserialize ((m), unserialize_aligned_pool, (v), sizeof ((*(v))[0]), (a), (f)) + +/* Serialize heaps. */ +serialize_function_t serialize_heap, unserialize_heap; + +void serialize_bitmap (serialize_main_t * m, uword * b); +uword *unserialize_bitmap (serialize_main_t * m); + +void serialize_cstring (serialize_main_t * m, char *string); +void unserialize_cstring (serialize_main_t * m, char **string); + +void serialize_close (serialize_main_t * m); +void unserialize_close (serialize_main_t * m); + +void serialize_open_data (serialize_main_t * m, u8 * data, + uword n_data_bytes); +void unserialize_open_data (serialize_main_t * m, u8 * data, + uword n_data_bytes); + +/* Starts serialization with expanding vector as buffer. */ +void serialize_open_vector (serialize_main_t * m, u8 * vector); + +/* Serialization is done: returns vector buffer to caller. */ +void *serialize_close_vector (serialize_main_t * m); + +void unserialize_open_vector (serialize_main_t * m, u8 * vector); + +#ifdef CLIB_UNIX +clib_error_t *serialize_open_unix_file (serialize_main_t * m, char *file); +clib_error_t *unserialize_open_unix_file (serialize_main_t * m, char *file); + +void serialize_open_unix_file_descriptor (serialize_main_t * m, int fd); +void unserialize_open_unix_file_descriptor (serialize_main_t * m, int fd); +#endif /* CLIB_UNIX */ + +/* Main routines. */ +clib_error_t *serialize (serialize_main_t * m, ...); +clib_error_t *unserialize (serialize_main_t * m, ...); +clib_error_t *va_serialize (serialize_main_t * m, va_list * va); + +void serialize_magic (serialize_main_t * m, void *magic, u32 magic_bytes); +void unserialize_check_magic (serialize_main_t * m, void *magic, + u32 magic_bytes); + +#endif /* included_clib_serialize_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/slist.c b/src/vppinfra/slist.c new file mode 100644 index 00000000..892517bb --- /dev/null +++ b/src/vppinfra/slist.c @@ -0,0 +1,336 @@ +/* + Copyright (c) 2012 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#include <vppinfra/slist.h> + +/* + * skip-list implementation + * + * Good news / bad news. As balanced binary tree schemes go, + * this one seems pretty fast and is reasonably simple. There's a very + * limited amount that can be done to mitigate sdram read latency. + * + * Each active clib_slist_elt_t is on from 1 to N lists. Each active element + * is always on the "level-0" list. Since most elements are *only* on + * level 0, we keep the level 0 (and level 1) in the element. For those + * elements on more than two lists, we switch to a vector. Hence, the + * "n" union in slib_slist_elt_t. + * + * The low-order bit of elt->n.next0[0] is 1 for inlined next indices, + * 0 for vector indices (since the allocator always aligns to at least + * a 4-byte boundary). We can only represent 2e9 items, but since the + * practical performance limit is O(1e7), it doesn't matter. + * + * We create a "head" element which (by construction) is always + * lexically lighter than any other element. This makes a large number + * of irritating special cases go away. + * + * User code is in charge of comparing a supplied key with + * the key component of a user pool element. The user tells this code + * to add or delete (opaque key, 32-bit integer) pairs to the skip-list. + * + * The algorithm adds new elements to one or more lists. + * For levels greater than zero, the probability of a new element landing on + * a list is branching_factor**N. Branching_factor = 0.2 seems to work + * OK, yielding about 50 compares per search at O(1e7) items. + */ + +clib_error_t * +clib_slist_init (clib_slist_t * sp, f64 branching_factor, + clib_slist_key_compare_function_t compare, + format_function_t format_user_element) +{ + clib_slist_elt_t *head; + memset (sp, 0, sizeof (sp[0])); + sp->branching_factor = branching_factor; + sp->format_user_element = format_user_element; + sp->compare = compare; + sp->seed = 0xdeaddabe; + pool_get (sp->elts, head); + vec_add1 (head->n.nexts, (u32) ~ 0); + head->user_pool_index = (u32) ~ 0; + vec_validate (sp->path, 1); + vec_validate (sp->occupancy, 0); + + return 0; +} + +/* + * slist_search_internal + */ +static inline clib_slist_search_result_t +slist_search_internal (clib_slist_t * sp, void *key, int need_full_path) +{ + int level, comp_result; + clib_slist_elt_t *search_elt, *head_elt; + + sp->ncompares = 0; + /* + * index 0 is the magic listhead element which is + * lexically lighter than / to the left of every element + */ + search_elt = head_elt = pool_elt_at_index (sp->elts, 0); + + /* + * Initial negotiating position, only the head_elt is + * lighter than the supplied key + */ + memset (sp->path, 0, vec_len (head_elt->n.nexts) * sizeof (u32)); + + /* Walk the fastest lane first */ + level = vec_len (head_elt->n.nexts) - 1; + _vec_len (sp->path) = level + 1; + + while (1) + { + u32 next_index_this_level; + clib_slist_elt_t *prefetch_elt; + + /* + * Prefetching the next element at this level makes a measurable + * difference, but doesn't fix the dependent read stall problem + */ + prefetch_elt = sp->elts + + clib_slist_get_next_at_level (search_elt, level); + + CLIB_PREFETCH (prefetch_elt, CLIB_CACHE_LINE_BYTES, READ); + + /* Compare the key with the current element */ + comp_result = (search_elt == head_elt) ? 1 : + sp->compare (key, search_elt->user_pool_index); + + sp->ncompares++; + /* key "lighter" than this element */ + if (comp_result < 0) + { + /* + * Back up to previous item on this list + * and search the next finer-grained list + * starting there. + */ + search_elt = pool_elt_at_index (sp->elts, sp->path[level]); + next_list: + if (level > 0) + { + level--; + continue; + } + else + { + return CLIB_SLIST_NO_MATCH; + } + } + /* Match */ + if (comp_result == 0) + { + /* + * If we're trying to delete an element, we need to + * track down all of the elements which point at it. + * Otherwise, don't bother with it + */ + if (need_full_path && level > 0) + { + search_elt = pool_elt_at_index (sp->elts, sp->path[level]); + level--; + continue; + } + level = vec_len (head_elt->n.nexts); + sp->path[level] = search_elt - sp->elts; + _vec_len (sp->path) = level + 1; + return CLIB_SLIST_MATCH; + } + /* + * comp_result positive, key is to the right of + * this element + */ + sp->path[level] = search_elt - sp->elts; + + /* Out of list at this level? */ + next_index_this_level = + clib_slist_get_next_at_level (search_elt, level); + if (next_index_this_level == (u32) ~ 0) + goto next_list; + + /* No, try the next element */ + search_elt = pool_elt_at_index (sp->elts, next_index_this_level); + } + return 0; /* notreached */ +} + +u32 +clib_slist_search (clib_slist_t * sp, void *key, u32 * ncompares) +{ + clib_slist_search_result_t rv; + + rv = slist_search_internal (sp, key, 0 /* dont need full path */ ); + if (rv == CLIB_SLIST_MATCH) + { + clib_slist_elt_t *elt; + elt = pool_elt_at_index (sp->elts, sp->path[vec_len (sp->path) - 1]); + if (ncompares) + *ncompares = sp->ncompares; + return elt->user_pool_index; + } + return (u32) ~ 0; +} + +void +clib_slist_add (clib_slist_t * sp, void *key, u32 user_pool_index) +{ + clib_slist_elt_t *new_elt; + clib_slist_search_result_t search_result; + int level; + + search_result = slist_search_internal (sp, key, + 0 /* don't need full path */ ); + + /* Special case: key exists, just replace user_pool_index */ + if (PREDICT_FALSE (search_result == CLIB_SLIST_MATCH)) + { + clib_slist_elt_t *elt; + elt = pool_elt_at_index (sp->elts, sp->path[0]); + elt->user_pool_index = user_pool_index; + return; + } + + pool_get (sp->elts, new_elt); + new_elt->n.nexts = 0; + new_elt->user_pool_index = user_pool_index; + + /* sp->path lists elements to the left of key, by level */ + for (level = 0; level < vec_len (sp->path); level++) + { + clib_slist_elt_t *prev_elt_this_level; + u32 prev_elt_next_index_this_level; + + /* Add to list at the current level */ + prev_elt_this_level = pool_elt_at_index (sp->elts, sp->path[level]); + prev_elt_next_index_this_level = clib_slist_get_next_at_level + (prev_elt_this_level, level); + + clib_slist_set_next_at_level (new_elt, prev_elt_next_index_this_level, + level); + + clib_slist_set_next_at_level (prev_elt_this_level, new_elt - sp->elts, + level); + sp->occupancy[level]++; + + /* Randomly add to the next-higher level */ + if (random_f64 (&sp->seed) > sp->branching_factor) + break; + } + { + /* Time to add a new ply? */ + clib_slist_elt_t *head_elt = pool_elt_at_index (sp->elts, 0); + int top_level = vec_len (head_elt->n.nexts) - 1; + if (((f64) sp->occupancy[top_level]) * sp->branching_factor > 1.0) + { + vec_add1 (sp->occupancy, 0); + vec_add1 (head_elt->n.nexts, (u32) ~ 0); + /* full match case returns n+1 items */ + vec_validate (sp->path, vec_len (head_elt->n.nexts)); + } + } +} + +clib_slist_search_result_t +clib_slist_del (clib_slist_t * sp, void *key) +{ + clib_slist_search_result_t search_result; + clib_slist_elt_t *del_elt; + int level; + + search_result = slist_search_internal (sp, key, 1 /* need full path */ ); + + if (PREDICT_FALSE (search_result == CLIB_SLIST_NO_MATCH)) + return search_result; + + del_elt = pool_elt_at_index (sp->elts, sp->path[vec_len (sp->path) - 1]); + ASSERT (vec_len (sp->path) > 1); + + for (level = 0; level < vec_len (sp->path) - 1; level++) + { + clib_slist_elt_t *path_elt; + u32 path_elt_next_index; + + path_elt = pool_elt_at_index (sp->elts, sp->path[level]); + path_elt_next_index = clib_slist_get_next_at_level (path_elt, level); + + /* Splice the item out of the list if it's adjacent to the victim */ + if (path_elt_next_index == del_elt - sp->elts) + { + sp->occupancy[level]--; + path_elt_next_index = clib_slist_get_next_at_level (del_elt, level); + clib_slist_set_next_at_level (path_elt, path_elt_next_index, level); + } + } + + /* If this element is on more than two lists it has a vector of nexts */ + if (!(del_elt->n.next0[0] & 1)) + vec_free (del_elt->n.nexts); + pool_put (sp->elts, del_elt); + return CLIB_SLIST_MATCH; +} + +u8 * +format_slist (u8 * s, va_list * args) +{ + clib_slist_t *sl = va_arg (*args, clib_slist_t *); + int verbose = va_arg (*args, int); + int i; + clib_slist_elt_t *head_elt, *elt; + + s = format (s, "slist 0x%x, %u items, branching_factor %.2f\n", sl, + sl->occupancy ? sl->occupancy[0] : 0, sl->branching_factor); + + if (pool_elts (sl->elts) == 0) + return s; + + head_elt = pool_elt_at_index (sl->elts, 0); + + for (i = 0; i < vec_len (head_elt->n.nexts); i++) + { + s = format (s, "level %d: %d elts\n", i, + sl->occupancy ? sl->occupancy[i] : 0); + + if (verbose && head_elt->n.nexts[i] != (u32) ~ 0) + { + elt = pool_elt_at_index (sl->elts, head_elt->n.nexts[i]); + while (elt) + { + u32 next_index; + s = format (s, "%U(%d) ", sl->format_user_element, + elt->user_pool_index, elt - sl->elts); + next_index = clib_slist_get_next_at_level (elt, i); + ASSERT (next_index != 0x7fffffff); + if (next_index == (u32) ~ 0) + break; + else + elt = pool_elt_at_index (sl->elts, next_index); + } + } + s = format (s, "\n"); + } + return s; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/slist.h b/src/vppinfra/slist.h new file mode 100644 index 00000000..a7c77e27 --- /dev/null +++ b/src/vppinfra/slist.h @@ -0,0 +1,145 @@ +/* + Copyright (c) 2012 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#ifndef included_slist_h +#define included_slist_h + +#include <stdarg.h> +#include <vppinfra/clib.h> +#include <vppinfra/vec.h> +#include <vppinfra/pool.h> +#include <vppinfra/error.h> +#include <vppinfra/format.h> +#include <vppinfra/cache.h> + +typedef word (clib_slist_key_compare_function_t) + (void *key, u32 elt_pool_index); + +typedef enum +{ + CLIB_SLIST_MATCH = 0, + CLIB_SLIST_NO_MATCH +} clib_slist_search_result_t; + +typedef struct +{ + /* Vector of next elements. Every valid instance has at least one */ + union + { + u32 next0[2]; + u32 *nexts; + } n; + + /* Index of item in user's pool */ + u32 user_pool_index; + /* $$$ pad to even divisor of cache line */ +} clib_slist_elt_t; + +static inline u32 +clib_slist_get_next_at_level (clib_slist_elt_t * elt, int level) +{ + if (elt->n.next0[0] & 1) + { + ASSERT (level < 2); + if (level == 1) + return elt->n.next0[1]; + /* preserve ~0 (end of list) */ + return (elt->n.next0[0] == (u32) ~ 0) ? elt->n.next0[0] : + (elt->n.next0[0] >> 1); + } + else + { + ASSERT (level < vec_len (elt->n.nexts)); + return elt->n.nexts[level]; + } +} + +static inline void +clib_slist_set_next_at_level (clib_slist_elt_t * elt, u32 index, int level) +{ + u32 old_level0_value[2]; + /* level0 and not a vector */ + if (level < 2 && (elt->n.next0[0] == 0 || elt->n.next0[0] & 1)) + { + if (level == 0) + { + elt->n.next0[0] = (index << 1) | 1; + return; + } + elt->n.next0[1] = index; + return; + } + /* have to save old level0 values? */ + if (elt->n.next0[0] & 1) + { + old_level0_value[0] = (elt->n.next0[0] == (u32) ~ 0) ? + elt->n.next0[0] : elt->n.next0[0] >> 1; + old_level0_value[1] = elt->n.next0[1]; + elt->n.nexts = 0; + vec_add1 (elt->n.nexts, old_level0_value[0]); + vec_add1 (elt->n.nexts, old_level0_value[1]); + } + vec_validate (elt->n.nexts, level); + elt->n.nexts[level] = index; +} + + +typedef struct +{ + /* pool of skip-list elements */ + clib_slist_elt_t *elts; + + /* last search path */ + u32 *path; + + /* last search number of compares */ + u32 ncompares; + + /* occupancy stats */ + u32 *occupancy; + + /* Comparison function */ + clib_slist_key_compare_function_t *compare; + + /* Format function */ + format_function_t *format_user_element; + + /* items appear in successive plies with Pr (1 / branching_factor) */ + f64 branching_factor; + + /* random seed */ + u32 seed; +} clib_slist_t; + +clib_error_t *clib_slist_init (clib_slist_t * sp, f64 branching_factor, + clib_slist_key_compare_function_t compare, + format_function_t format_user_element); + +format_function_t format_slist; + +void clib_slist_add (clib_slist_t * sp, void *key, u32 user_pool_index); +clib_slist_search_result_t clib_slist_del (clib_slist_t * sp, void *key); +u32 clib_slist_search (clib_slist_t * sp, void *key, u32 * ncompares); + +#endif /* included_slist_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/smp.c b/src/vppinfra/smp.c new file mode 100644 index 00000000..f603283e --- /dev/null +++ b/src/vppinfra/smp.c @@ -0,0 +1,325 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/longjmp.h> +#include <vppinfra/mheap.h> +#include <vppinfra/os.h> + +void +clib_smp_free (clib_smp_main_t * m) +{ + clib_mem_vm_free (m->vm_base, + (uword) ((1 + m->n_cpus) << m->log2_n_per_cpu_vm_bytes)); +} + +static uword +allocate_per_cpu_mheap (uword cpu) +{ + clib_smp_main_t *m = &clib_smp_main; + void *heap; + uword vm_size, stack_size, mheap_flags; + + ASSERT (os_get_thread_index () == cpu); + + vm_size = (uword) 1 << m->log2_n_per_cpu_vm_bytes; + stack_size = (uword) 1 << m->log2_n_per_cpu_stack_bytes; + + mheap_flags = MHEAP_FLAG_SMALL_OBJECT_CACHE; + + /* Heap extends up to start of stack. */ + heap = mheap_alloc_with_flags (clib_smp_vm_base_for_cpu (m, cpu), + vm_size - stack_size, mheap_flags); + clib_mem_set_heap (heap); + + if (cpu == 0) + { + /* Now that we have a heap, allocate main structure on cpu 0. */ + vec_resize (m->per_cpu_mains, m->n_cpus); + + /* Allocate shared global heap (thread safe). */ + m->global_heap = + mheap_alloc_with_flags (clib_smp_vm_base_for_cpu (m, cpu + m->n_cpus), + vm_size, + mheap_flags | MHEAP_FLAG_THREAD_SAFE); + } + + m->per_cpu_mains[cpu].heap = heap; + return 0; +} + +void +clib_smp_init (void) +{ + clib_smp_main_t *m = &clib_smp_main; + uword cpu; + + m->vm_base = + clib_mem_vm_alloc ((uword) (m->n_cpus + 1) << m->log2_n_per_cpu_vm_bytes); + if (!m->vm_base) + clib_error ("error allocating virtual memory"); + + for (cpu = 0; cpu < m->n_cpus; cpu++) + clib_calljmp (allocate_per_cpu_mheap, cpu, + clib_smp_stack_top_for_cpu (m, cpu)); +} + +void +clib_smp_lock_init (clib_smp_lock_t ** pl) +{ + clib_smp_lock_t *l; + uword i, n_bytes, n_fifo_elts; + + /* No locking necessary if n_cpus <= 1. + Null means no locking is necessary. */ + if (clib_smp_main.n_cpus < 2) + { + *pl = 0; + return; + } + + /* Need n_cpus - 1 elts in waiting fifo. One CPU holds lock + and others could potentially be waiting. */ + n_fifo_elts = clib_smp_main.n_cpus - 1; + + n_bytes = sizeof (l[0]) + n_fifo_elts * sizeof (l->waiting_fifo[0]); + ASSERT_AND_PANIC (n_bytes % CLIB_CACHE_LINE_BYTES == 0); + + l = clib_mem_alloc_aligned (n_bytes, CLIB_CACHE_LINE_BYTES); + + memset (l, 0, n_bytes); + l->n_waiting_fifo_elts = n_fifo_elts; + + for (i = 0; i < l->n_waiting_fifo_elts; i++) + l->waiting_fifo[i].wait_type = CLIB_SMP_LOCK_WAIT_EMPTY; + + *pl = l; +} + +void +clib_smp_lock_free (clib_smp_lock_t ** pl) +{ + if (*pl) + clib_mem_free (*pl); + *pl = 0; +} + +void +clib_smp_lock_slow_path (clib_smp_lock_t * l, + uword my_cpu, + clib_smp_lock_header_t h0, clib_smp_lock_type_t type) +{ + clib_smp_lock_header_t h1, h2, h3; + uword is_reader = type == CLIB_SMP_LOCK_TYPE_READER; + uword n_fifo_elts = l->n_waiting_fifo_elts; + uword my_tail; + + /* Atomically advance waiting FIFO tail pointer; my_tail will point + to entry where we can insert ourselves to wait for lock to be granted. */ + while (1) + { + h1 = h0; + my_tail = h1.waiting_fifo.head_index + h1.waiting_fifo.n_elts; + my_tail = my_tail >= n_fifo_elts ? my_tail - n_fifo_elts : my_tail; + h1.waiting_fifo.n_elts += 1; + h1.request_cpu = my_cpu; + + ASSERT_AND_PANIC (h1.waiting_fifo.n_elts <= n_fifo_elts); + ASSERT_AND_PANIC (my_tail >= 0 && my_tail < n_fifo_elts); + + h2 = clib_smp_lock_set_header (l, h1, h0); + + /* Tail successfully advanced? */ + if (clib_smp_lock_header_is_equal (h0, h2)) + break; + + /* It is possible that if head and tail are both zero, CPU with lock would have unlocked lock. */ + else if (type == CLIB_SMP_LOCK_TYPE_SPIN) + { + while (!h2.writer_has_lock) + { + ASSERT_AND_PANIC (h2.waiting_fifo.n_elts == 0); + h1 = h2; + h1.request_cpu = my_cpu; + h1.writer_has_lock = 1; + + h3 = clib_smp_lock_set_header (l, h1, h2); + + /* Got it? */ + if (clib_smp_lock_header_is_equal (h2, h3)) + return; + + h2 = h3; + } + } + + /* Try to advance tail again. */ + h0 = h2; + } + + { + clib_smp_lock_waiting_fifo_elt_t *w; + + w = l->waiting_fifo + my_tail; + + while (w->wait_type != CLIB_SMP_LOCK_WAIT_EMPTY) + clib_smp_pause (); + + w->wait_type = (is_reader + ? CLIB_SMP_LOCK_WAIT_READER : CLIB_SMP_LOCK_WAIT_WRITER); + + /* Wait until CPU holding the lock grants us the lock. */ + while (w->wait_type != CLIB_SMP_LOCK_WAIT_DONE) + clib_smp_pause (); + + w->wait_type = CLIB_SMP_LOCK_WAIT_EMPTY; + } +} + +void +clib_smp_unlock_slow_path (clib_smp_lock_t * l, + uword my_cpu, + clib_smp_lock_header_t h0, + clib_smp_lock_type_t type) +{ + clib_smp_lock_header_t h1, h2; + clib_smp_lock_waiting_fifo_elt_t *head; + clib_smp_lock_wait_type_t head_wait_type; + uword is_reader = type == CLIB_SMP_LOCK_TYPE_READER; + uword n_fifo_elts = l->n_waiting_fifo_elts; + uword head_index, must_wait_for_readers; + + while (1) + { + /* Advance waiting fifo giving lock to first waiter. */ + while (1) + { + ASSERT_AND_PANIC (h0.waiting_fifo.n_elts != 0); + + h1 = h0; + + head_index = h1.waiting_fifo.head_index; + head = l->waiting_fifo + head_index; + if (is_reader) + { + ASSERT_AND_PANIC (h1.n_readers_with_lock > 0); + h1.n_readers_with_lock -= 1; + } + else + { + /* Writer will already have lock. */ + ASSERT_AND_PANIC (h1.writer_has_lock); + } + + while ((head_wait_type = + head->wait_type) == CLIB_SMP_LOCK_WAIT_EMPTY) + clib_smp_pause (); + + /* Don't advance FIFO to writer unless all readers have unlocked. */ + must_wait_for_readers = + (type != CLIB_SMP_LOCK_TYPE_SPIN + && head_wait_type == CLIB_SMP_LOCK_WAIT_WRITER + && h1.n_readers_with_lock != 0); + + if (!must_wait_for_readers) + { + head_index += 1; + h1.waiting_fifo.n_elts -= 1; + if (type != CLIB_SMP_LOCK_TYPE_SPIN) + { + if (head_wait_type == CLIB_SMP_LOCK_WAIT_WRITER) + h1.writer_has_lock = h1.n_readers_with_lock == 0; + else + { + h1.writer_has_lock = 0; + h1.n_readers_with_lock += 1; + } + } + } + + h1.waiting_fifo.head_index = + head_index == n_fifo_elts ? 0 : head_index; + h1.request_cpu = my_cpu; + + ASSERT_AND_PANIC (h1.waiting_fifo.head_index >= 0 + && h1.waiting_fifo.head_index < n_fifo_elts); + ASSERT_AND_PANIC (h1.waiting_fifo.n_elts >= 0 + && h1.waiting_fifo.n_elts <= n_fifo_elts); + + h2 = clib_smp_lock_set_header (l, h1, h0); + + if (clib_smp_lock_header_is_equal (h2, h0)) + break; + + h0 = h2; + + if (h0.waiting_fifo.n_elts == 0) + return clib_smp_unlock_inline (l, type); + } + + if (must_wait_for_readers) + return; + + /* Wake up head of waiting fifo. */ + { + uword done_waking; + + /* Shift lock to first thread waiting in fifo. */ + head->wait_type = CLIB_SMP_LOCK_WAIT_DONE; + + /* For read locks we may be able to wake multiple readers. */ + done_waking = 1; + if (head_wait_type == CLIB_SMP_LOCK_WAIT_READER) + { + uword hi = h0.waiting_fifo.head_index; + if (h0.waiting_fifo.n_elts != 0 + && l->waiting_fifo[hi].wait_type == CLIB_SMP_LOCK_WAIT_READER) + done_waking = 0; + } + + if (done_waking) + break; + } + } +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/smp.h b/src/vppinfra/smp.h new file mode 100644 index 00000000..7e703b3d --- /dev/null +++ b/src/vppinfra/smp.h @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001-2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_smp_h +#define included_clib_smp_h + +#include <vppinfra/cache.h> +#include <vppinfra/os.h> /* for os_panic */ + +#define clib_smp_compare_and_swap(addr,new,old) __sync_val_compare_and_swap(addr,old,new) +#define clib_smp_swap(addr,new) __sync_lock_test_and_set(addr,new) +#define clib_smp_atomic_add(addr,increment) __sync_fetch_and_add(addr,increment) + +#if defined (i386) || defined (__x86_64__) +#define clib_smp_pause() do { asm volatile ("pause"); } while (0) +#endif + +#ifndef clib_smp_pause +#define clib_smp_pause() do { } while (0) +#endif + +#ifdef CLIB_UNIX +#include <sched.h> + +always_inline void +os_sched_yield (void) +{ + sched_yield (); +} +#else +always_inline void +os_sched_yield (void) +{ + clib_smp_pause (); +} +#endif + + +#endif /* included_clib_smp_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/smp_fifo.c b/src/vppinfra/smp_fifo.c new file mode 100644 index 00000000..bb74064d --- /dev/null +++ b/src/vppinfra/smp_fifo.c @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2012 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/smp_fifo.h> +#include <vppinfra/mem.h> + +clib_smp_fifo_t * +clib_smp_fifo_init (uword max_n_elts, uword n_bytes_per_elt) +{ + clib_smp_fifo_t *f; + uword n_bytes_per_elt_cache_aligned; + + f = clib_mem_alloc_aligned (sizeof (f[0]), CLIB_CACHE_LINE_BYTES); + + memset (f, 0, sizeof (f[0])); + + max_n_elts = max_n_elts ? max_n_elts : 32; + f->log2_max_n_elts = max_log2 (max_n_elts); + f->max_n_elts_less_one = (1 << f->log2_max_n_elts) - 1; + + n_bytes_per_elt_cache_aligned = + clib_smp_fifo_round_elt_bytes (n_bytes_per_elt); + clib_exec_on_global_heap ( + { + f->data = + clib_mem_alloc_aligned + (n_bytes_per_elt_cache_aligned << + f->log2_max_n_elts, CLIB_CACHE_LINE_BYTES);} + ); + + /* Zero all data and mark all elements free. */ + { + uword i; + for (i = 0; i <= f->max_n_elts_less_one; i++) + { + void *d = clib_smp_fifo_elt_at_index (f, n_bytes_per_elt, i); + clib_smp_fifo_data_footer_t *t; + + memset (d, 0, n_bytes_per_elt_cache_aligned); + + t = clib_smp_fifo_get_data_footer (d, n_bytes_per_elt); + clib_smp_fifo_data_footer_set_state (t, + CLIB_SMP_FIFO_DATA_STATE_free); + } + } + + return f; +} + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/smp_fifo.h b/src/vppinfra/smp_fifo.h new file mode 100644 index 00000000..c74a77c8 --- /dev/null +++ b/src/vppinfra/smp_fifo.h @@ -0,0 +1,313 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2012 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_smp_vec_h +#define included_clib_smp_vec_h + +#include <vppinfra/smp.h> + +#define foreach_clib_smp_fifo_data_state \ + _ (free) \ + _ (write_alloc) \ + _ (write_done) \ + _ (read_fetch) + +typedef enum +{ +#define _(f) CLIB_SMP_FIFO_DATA_STATE_##f, + foreach_clib_smp_fifo_data_state +#undef _ + CLIB_SMP_FIFO_N_DATA_STATE, +} clib_smp_fifo_data_state_t; + +/* Footer at end of each data element. */ +typedef struct +{ + /* Magic number marking valid footer plus state encoded in low bits. */ + u32 magic_state; +} clib_smp_fifo_data_footer_t; + +#define CLIB_SMP_DATA_FOOTER_MAGIC 0xfafbfcf0 + +always_inline clib_smp_fifo_data_state_t +clib_smp_fifo_data_footer_get_state (clib_smp_fifo_data_footer_t * f) +{ + u32 s = f->magic_state - CLIB_SMP_DATA_FOOTER_MAGIC; + + /* Check that magic number plus state is still valid. */ + if (s >= CLIB_SMP_FIFO_N_DATA_STATE) + os_panic (); + + return s; +} + +always_inline void +clib_smp_fifo_data_footer_set_state (clib_smp_fifo_data_footer_t * f, + clib_smp_fifo_data_state_t s) +{ + f->magic_state = CLIB_SMP_DATA_FOOTER_MAGIC + s; +} + +typedef struct +{ + /* Read/write indices each on their own cache line. + Atomic incremented for each read/write. */ + u32 read_index, write_index; + + /* Power of 2 number of elements in fifo less one. */ + u32 max_n_elts_less_one; + + /* Log2 of above. */ + u32 log2_max_n_elts; + + /* Cache aligned data. */ + void *data; +} clib_smp_fifo_t; + +/* External functions. */ +clib_smp_fifo_t *clib_smp_fifo_init (uword max_n_elts, uword n_bytes_per_elt); + +/* Elements are always cache-line sized; this is to avoid smp cache thrashing. */ +always_inline uword +clib_smp_fifo_round_elt_bytes (uword n_bytes_per_elt) +{ + return round_pow2 (n_bytes_per_elt, CLIB_CACHE_LINE_BYTES); +} + +always_inline uword +clib_smp_fifo_n_elts (clib_smp_fifo_t * f) +{ + uword n = f->write_index - f->read_index; + ASSERT (n <= f->max_n_elts_less_one + 1); + return n; +} + +always_inline clib_smp_fifo_data_footer_t * +clib_smp_fifo_get_data_footer (void *d, uword n_bytes_per_elt) +{ + clib_smp_fifo_data_footer_t *f; + f = d + clib_smp_fifo_round_elt_bytes (n_bytes_per_elt) - sizeof (f[0]); + return f; +} + +always_inline void * +clib_smp_fifo_elt_at_index (clib_smp_fifo_t * f, uword n_bytes_per_elt, + uword i) +{ + uword n_bytes_per_elt_cache_aligned; + + ASSERT (i <= f->max_n_elts_less_one); + + n_bytes_per_elt_cache_aligned = + clib_smp_fifo_round_elt_bytes (n_bytes_per_elt); + + return f->data + i * n_bytes_per_elt_cache_aligned; +} + +always_inline void * +clib_smp_fifo_write_alloc (clib_smp_fifo_t * f, uword n_bytes_per_elt) +{ + void *d; + clib_smp_fifo_data_footer_t *t; + clib_smp_fifo_data_state_t s; + u32 wi0, wi1; + + wi0 = f->write_index; + + /* Fifo full? */ + if (wi0 - f->read_index > f->max_n_elts_less_one) + return 0; + + while (1) + { + wi1 = wi0 + 1; + + d = + clib_smp_fifo_elt_at_index (f, n_bytes_per_elt, + wi0 & f->max_n_elts_less_one); + t = clib_smp_fifo_get_data_footer (d, n_bytes_per_elt); + + s = clib_smp_fifo_data_footer_get_state (t); + if (s != CLIB_SMP_FIFO_DATA_STATE_free) + { + d = 0; + break; + } + + wi1 = clib_smp_compare_and_swap (&f->write_index, wi1, wi0); + + if (wi1 == wi0) + { + clib_smp_fifo_data_footer_set_state (t, + CLIB_SMP_FIFO_DATA_STATE_write_alloc); + break; + } + + /* Other cpu wrote write index first: try again. */ + wi0 = wi1; + } + + return d; +} + +always_inline void +clib_smp_fifo_write_done (clib_smp_fifo_t * f, void *d, uword n_bytes_per_elt) +{ + clib_smp_fifo_data_footer_t *t; + + /* Flush out pending writes before we change state to write_done. + This will hold off readers until data is flushed. */ + CLIB_MEMORY_BARRIER (); + + t = clib_smp_fifo_get_data_footer (d, n_bytes_per_elt); + + ASSERT (clib_smp_fifo_data_footer_get_state (t) == + CLIB_SMP_FIFO_DATA_STATE_write_alloc); + clib_smp_fifo_data_footer_set_state (t, + CLIB_SMP_FIFO_DATA_STATE_write_done); +} + +always_inline void * +clib_smp_fifo_read_fetch (clib_smp_fifo_t * f, uword n_bytes_per_elt) +{ + void *d; + clib_smp_fifo_data_footer_t *t; + clib_smp_fifo_data_state_t s; + u32 ri0, ri1; + + ri0 = f->read_index; + + /* Fifo empty? */ + if (f->write_index - ri0 == 0) + return 0; + + while (1) + { + ri1 = ri0 + 1; + + d = + clib_smp_fifo_elt_at_index (f, n_bytes_per_elt, + ri0 & f->max_n_elts_less_one); + t = clib_smp_fifo_get_data_footer (d, n_bytes_per_elt); + + s = clib_smp_fifo_data_footer_get_state (t); + if (s != CLIB_SMP_FIFO_DATA_STATE_write_done) + { + d = 0; + break; + } + + ri1 = clib_smp_compare_and_swap (&f->read_index, ri1, ri0); + if (ri1 == ri0) + { + clib_smp_fifo_data_footer_set_state (t, + CLIB_SMP_FIFO_DATA_STATE_read_fetch); + break; + } + + ri0 = ri1; + } + + return d; +} + +always_inline void +clib_smp_fifo_read_done (clib_smp_fifo_t * f, void *d, uword n_bytes_per_elt) +{ + clib_smp_fifo_data_footer_t *t; + + t = clib_smp_fifo_get_data_footer (d, n_bytes_per_elt); + + ASSERT (clib_smp_fifo_data_footer_get_state (t) == + CLIB_SMP_FIFO_DATA_STATE_read_fetch); + clib_smp_fifo_data_footer_set_state (t, CLIB_SMP_FIFO_DATA_STATE_free); +} + +always_inline void +clib_smp_fifo_memcpy (uword * dst, uword * src, uword n_bytes) +{ + word n_bytes_left = n_bytes; + + while (n_bytes_left >= 4 * sizeof (uword)) + { + dst[0] = src[0]; + dst[1] = src[1]; + dst[2] = src[2]; + dst[3] = src[3]; + dst += 4; + src += 4; + n_bytes_left -= 4 * sizeof (dst[0]); + } + + while (n_bytes_left > 0) + { + dst[0] = src[0]; + dst += 1; + src += 1; + n_bytes_left -= 1 * sizeof (dst[0]); + } +} + +always_inline void +clib_smp_fifo_write_inline (clib_smp_fifo_t * f, void *elt_to_write, + uword n_bytes_per_elt) +{ + uword *dst; + dst = clib_smp_fifo_write_alloc (f, n_bytes_per_elt); + clib_smp_fifo_memcpy (dst, elt_to_write, n_bytes_per_elt); + clib_smp_fifo_write_done (f, dst, n_bytes_per_elt); +} + +always_inline void +clib_smp_fifo_read_inline (clib_smp_fifo_t * f, void *elt_to_read, + uword n_bytes_per_elt) +{ + uword *src; + src = clib_smp_fifo_read_fetch (f, n_bytes_per_elt); + clib_smp_fifo_memcpy (elt_to_read, src, n_bytes_per_elt); + clib_smp_fifo_read_done (f, src, n_bytes_per_elt); +} + +#endif /* included_clib_smp_vec_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/socket.c b/src/vppinfra/socket.c new file mode 100644 index 00000000..87a9333f --- /dev/null +++ b/src/vppinfra/socket.c @@ -0,0 +1,559 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003, 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <stdio.h> +#include <string.h> /* strchr */ +#define __USE_GNU +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <sys/stat.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <netdb.h> +#include <unistd.h> +#include <fcntl.h> + +#include <vppinfra/mem.h> +#include <vppinfra/vec.h> +#include <vppinfra/socket.h> +#include <vppinfra/format.h> +#include <vppinfra/error.h> + +void +clib_socket_tx_add_formatted (clib_socket_t * s, char *fmt, ...) +{ + va_list va; + va_start (va, fmt); + clib_socket_tx_add_va_formatted (s, fmt, &va); + va_end (va); +} + +/* Return and bind to an unused port. */ +static word +find_free_port (word sock) +{ + word port; + + for (port = IPPORT_USERRESERVED; port < 1 << 16; port++) + { + struct sockaddr_in a; + + memset (&a, 0, sizeof (a)); /* Warnings be gone */ + + a.sin_family = PF_INET; + a.sin_addr.s_addr = INADDR_ANY; + a.sin_port = htons (port); + + if (bind (sock, (struct sockaddr *) &a, sizeof (a)) >= 0) + break; + } + + return port < 1 << 16 ? port : -1; +} + +/* Convert a config string to a struct sockaddr and length for use + with bind or connect. */ +static clib_error_t * +socket_config (char *config, + void *addr, socklen_t * addr_len, u32 ip4_default_address) +{ + clib_error_t *error = 0; + + if (!config) + config = ""; + + /* Anything that begins with a / is a local PF_LOCAL socket. */ + if (config[0] == '/') + { + struct sockaddr_un *su = addr; + su->sun_family = PF_LOCAL; + clib_memcpy (&su->sun_path, config, + clib_min (sizeof (su->sun_path), 1 + strlen (config))); + *addr_len = sizeof (su[0]); + } + + /* Hostname or hostname:port or port. */ + else + { + char *host_name; + int port = -1; + struct sockaddr_in *sa = addr; + + host_name = 0; + port = -1; + if (config[0] != 0) + { + unformat_input_t i; + + unformat_init_string (&i, config, strlen (config)); + if (unformat (&i, "%s:%d", &host_name, &port) + || unformat (&i, "%s:0x%x", &host_name, &port)) + ; + else if (unformat (&i, "%s", &host_name)) + ; + else + error = clib_error_return (0, "unknown input `%U'", + format_unformat_error, &i); + unformat_free (&i); + + if (error) + goto done; + } + + sa->sin_family = PF_INET; + *addr_len = sizeof (sa[0]); + if (port != -1) + sa->sin_port = htons (port); + else + sa->sin_port = 0; + + if (host_name) + { + struct in_addr host_addr; + + /* Recognize localhost to avoid host lookup in most common cast. */ + if (!strcmp (host_name, "localhost")) + sa->sin_addr.s_addr = htonl (INADDR_LOOPBACK); + + else if (inet_aton (host_name, &host_addr)) + sa->sin_addr = host_addr; + + else if (host_name && strlen (host_name) > 0) + { + struct hostent *host = gethostbyname (host_name); + if (!host) + error = clib_error_return (0, "unknown host `%s'", config); + else + clib_memcpy (&sa->sin_addr.s_addr, host->h_addr_list[0], + host->h_length); + } + + else + sa->sin_addr.s_addr = htonl (ip4_default_address); + + vec_free (host_name); + if (error) + goto done; + } + } + +done: + return error; +} + +static clib_error_t * +default_socket_write (clib_socket_t * s) +{ + clib_error_t *err = 0; + word written = 0; + word fd = 0; + word tx_len; + + fd = s->fd; + + /* Map standard input to standard output. + Typically, fd is a socket for which read/write both work. */ + if (fd == 0) + fd = 1; + + tx_len = vec_len (s->tx_buffer); + written = write (fd, s->tx_buffer, tx_len); + + /* Ignore certain errors. */ + if (written < 0 && !unix_error_is_fatal (errno)) + written = 0; + + /* A "real" error occurred. */ + if (written < 0) + { + err = clib_error_return_unix (0, "write %wd bytes (fd %d, '%s')", + tx_len, s->fd, s->config); + vec_free (s->tx_buffer); + goto done; + } + + /* Reclaim the transmitted part of the tx buffer on successful writes. */ + else if (written > 0) + { + if (written == tx_len) + _vec_len (s->tx_buffer) = 0; + else + vec_delete (s->tx_buffer, written, 0); + } + + /* If a non-fatal error occurred AND + the buffer is full, then we must free it. */ + else if (written == 0 && tx_len > 64 * 1024) + { + vec_free (s->tx_buffer); + } + +done: + return err; +} + +static clib_error_t * +default_socket_read (clib_socket_t * sock, int n_bytes) +{ + word fd, n_read; + u8 *buf; + + /* RX side of socket is down once end of file is reached. */ + if (sock->flags & CLIB_SOCKET_F_RX_END_OF_FILE) + return 0; + + fd = sock->fd; + + n_bytes = clib_max (n_bytes, 4096); + vec_add2 (sock->rx_buffer, buf, n_bytes); + + if ((n_read = read (fd, buf, n_bytes)) < 0) + { + n_read = 0; + + /* Ignore certain errors. */ + if (!unix_error_is_fatal (errno)) + goto non_fatal; + + return clib_error_return_unix (0, "read %d bytes (fd %d, '%s')", + n_bytes, sock->fd, sock->config); + } + + /* Other side closed the socket. */ + if (n_read == 0) + sock->flags |= CLIB_SOCKET_F_RX_END_OF_FILE; + +non_fatal: + _vec_len (sock->rx_buffer) += n_read - n_bytes; + + return 0; +} + +static clib_error_t * +default_socket_close (clib_socket_t * s) +{ + if (close (s->fd) < 0) + return clib_error_return_unix (0, "close (fd %d, %s)", s->fd, s->config); + return 0; +} + +static clib_error_t * +default_socket_sendmsg (clib_socket_t * s, void *msg, int msglen, + int fds[], int num_fds) +{ + struct msghdr mh = { 0 }; + struct iovec iov[1]; + char ctl[CMSG_SPACE (sizeof (int)) * num_fds]; + int rv; + + iov[0].iov_base = msg; + iov[0].iov_len = msglen; + mh.msg_iov = iov; + mh.msg_iovlen = 1; + + if (num_fds > 0) + { + struct cmsghdr *cmsg; + memset (&ctl, 0, sizeof (ctl)); + mh.msg_control = ctl; + mh.msg_controllen = sizeof (ctl); + cmsg = CMSG_FIRSTHDR (&mh); + cmsg->cmsg_len = CMSG_LEN (sizeof (int) * num_fds); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_RIGHTS; + memcpy (CMSG_DATA (cmsg), fds, sizeof (int) * num_fds); + } + rv = sendmsg (s->fd, &mh, 0); + if (rv < 0) + return clib_error_return_unix (0, "sendmsg"); + return 0; +} + + +static clib_error_t * +default_socket_recvmsg (clib_socket_t * s, void *msg, int msglen, + int fds[], int num_fds) +{ + char ctl[CMSG_SPACE (sizeof (int) * num_fds) + + CMSG_SPACE (sizeof (struct ucred))]; + struct msghdr mh = { 0 }; + struct iovec iov[1]; + ssize_t size; + struct ucred *cr = 0; + struct cmsghdr *cmsg; + + iov[0].iov_base = msg; + iov[0].iov_len = msglen; + mh.msg_iov = iov; + mh.msg_iovlen = 1; + mh.msg_control = ctl; + mh.msg_controllen = sizeof (ctl); + + memset (ctl, 0, sizeof (ctl)); + + /* receive the incoming message */ + size = recvmsg (s->fd, &mh, 0); + if (size != msglen) + { + return (size == 0) ? clib_error_return (0, "disconnected") : + clib_error_return_unix (0, "recvmsg: malformed message (fd %d, '%s')", + s->fd, s->config); + } + + cmsg = CMSG_FIRSTHDR (&mh); + while (cmsg) + { + if (cmsg->cmsg_level == SOL_SOCKET) + { + if (cmsg->cmsg_type == SCM_CREDENTIALS) + { + cr = (struct ucred *) CMSG_DATA (cmsg); + s->uid = cr->uid; + s->gid = cr->gid; + s->pid = cr->pid; + } + else if (cmsg->cmsg_type == SCM_RIGHTS) + { + clib_memcpy (fds, CMSG_DATA (cmsg), num_fds * sizeof (int)); + } + } + cmsg = CMSG_NXTHDR (&mh, cmsg); + } + return 0; +} + +static void +socket_init_funcs (clib_socket_t * s) +{ + if (!s->write_func) + s->write_func = default_socket_write; + if (!s->read_func) + s->read_func = default_socket_read; + if (!s->close_func) + s->close_func = default_socket_close; + if (!s->sendmsg_func) + s->sendmsg_func = default_socket_sendmsg; + if (!s->recvmsg_func) + s->recvmsg_func = default_socket_recvmsg; +} + +clib_error_t * +clib_socket_init (clib_socket_t * s) +{ + union + { + struct sockaddr sa; + struct sockaddr_un su; + } addr; + socklen_t addr_len = 0; + int socket_type; + clib_error_t *error = 0; + word port; + + error = socket_config (s->config, &addr.sa, &addr_len, + (s->flags & CLIB_SOCKET_F_IS_SERVER + ? INADDR_LOOPBACK : INADDR_ANY)); + if (error) + goto done; + + socket_init_funcs (s); + + socket_type = s->flags & CLIB_SOCKET_F_SEQPACKET ? + SOCK_SEQPACKET : SOCK_STREAM; + + s->fd = socket (addr.sa.sa_family, socket_type, 0); + if (s->fd < 0) + { + error = clib_error_return_unix (0, "socket (fd %d, '%s')", + s->fd, s->config); + goto done; + } + + port = 0; + if (addr.sa.sa_family == PF_INET) + port = ((struct sockaddr_in *) &addr)->sin_port; + + if (s->flags & CLIB_SOCKET_F_IS_SERVER) + { + uword need_bind = 1; + + if (addr.sa.sa_family == PF_INET) + { + if (port == 0) + { + port = find_free_port (s->fd); + if (port < 0) + { + error = clib_error_return (0, "no free port (fd %d, '%s')", + s->fd, s->config); + goto done; + } + need_bind = 0; + } + } + if (addr.sa.sa_family == PF_LOCAL) + unlink (((struct sockaddr_un *) &addr)->sun_path); + + /* Make address available for multiple users. */ + { + int v = 1; + if (setsockopt (s->fd, SOL_SOCKET, SO_REUSEADDR, &v, sizeof (v)) < 0) + clib_unix_warning ("setsockopt SO_REUSEADDR fails"); + } + + if (addr.sa.sa_family == PF_LOCAL && s->flags & CLIB_SOCKET_F_PASSCRED) + { + int x = 1; + if (setsockopt (s->fd, SOL_SOCKET, SO_PASSCRED, &x, sizeof (x)) < 0) + { + error = clib_error_return_unix (0, "setsockopt (SO_PASSCRED, " + "fd %d, '%s')", s->fd, + s->config); + goto done; + } + } + + if (need_bind && bind (s->fd, &addr.sa, addr_len) < 0) + { + error = clib_error_return_unix (0, "bind (fd %d, '%s')", + s->fd, s->config); + goto done; + } + + if (listen (s->fd, 5) < 0) + { + error = clib_error_return_unix (0, "listen (fd %d, '%s')", + s->fd, s->config); + goto done; + } + if (addr.sa.sa_family == PF_LOCAL + && s->flags & CLIB_SOCKET_F_ALLOW_GROUP_WRITE) + { + struct stat st = { 0 }; + if (stat (((struct sockaddr_un *) &addr)->sun_path, &st) < 0) + { + error = clib_error_return_unix (0, "stat (fd %d, '%s')", + s->fd, s->config); + goto done; + } + st.st_mode |= S_IWGRP; + if (chmod (((struct sockaddr_un *) &addr)->sun_path, st.st_mode) < + 0) + { + error = + clib_error_return_unix (0, "chmod (fd %d, '%s', mode %o)", + s->fd, s->config, st.st_mode); + goto done; + } + } + } + else + { + if ((s->flags & CLIB_SOCKET_F_NON_BLOCKING_CONNECT) + && fcntl (s->fd, F_SETFL, O_NONBLOCK) < 0) + { + error = clib_error_return_unix (0, "fcntl NONBLOCK (fd %d, '%s')", + s->fd, s->config); + goto done; + } + + if (connect (s->fd, &addr.sa, addr_len) < 0 + && !((s->flags & CLIB_SOCKET_F_NON_BLOCKING_CONNECT) && + errno == EINPROGRESS)) + { + error = clib_error_return_unix (0, "connect (fd %d, '%s')", + s->fd, s->config); + goto done; + } + } + + return error; + +done: + if (s->fd > 0) + close (s->fd); + return error; +} + +clib_error_t * +clib_socket_accept (clib_socket_t * server, clib_socket_t * client) +{ + clib_error_t *err = 0; + socklen_t len = 0; + + memset (client, 0, sizeof (client[0])); + + /* Accept the new socket connection. */ + client->fd = accept (server->fd, 0, 0); + if (client->fd < 0) + return clib_error_return_unix (0, "accept (fd %d, '%s')", + server->fd, server->config); + + /* Set the new socket to be non-blocking. */ + if (fcntl (client->fd, F_SETFL, O_NONBLOCK) < 0) + { + err = clib_error_return_unix (0, "fcntl O_NONBLOCK (fd %d)", + client->fd); + goto close_client; + } + + /* Get peer info. */ + len = sizeof (client->peer); + if (getpeername (client->fd, (struct sockaddr *) &client->peer, &len) < 0) + { + err = clib_error_return_unix (0, "getpeername (fd %d)", client->fd); + goto close_client; + } + + client->flags = CLIB_SOCKET_F_IS_CLIENT; + + socket_init_funcs (client); + return 0; + +close_client: + close (client->fd); + return err; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/socket.h b/src/vppinfra/socket.h new file mode 100644 index 00000000..4f9e9509 --- /dev/null +++ b/src/vppinfra/socket.h @@ -0,0 +1,192 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef _clib_included_socket_h +#define _clib_included_socket_h + +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> + +#include <vppinfra/clib.h> +#include <vppinfra/error.h> +#include <vppinfra/format.h> + +typedef struct _socket_t +{ + /* File descriptor. */ + i32 fd; + + /* Config string for socket HOST:PORT or just HOST. */ + char *config; + + u32 flags; +#define CLIB_SOCKET_F_IS_SERVER (1 << 0) +#define CLIB_SOCKET_F_IS_CLIENT (0 << 0) +#define CLIB_SOCKET_F_RX_END_OF_FILE (1 << 2) +#define CLIB_SOCKET_F_NON_BLOCKING_CONNECT (1 << 3) +#define CLIB_SOCKET_F_ALLOW_GROUP_WRITE (1 << 4) +#define CLIB_SOCKET_F_SEQPACKET (1 << 5) +#define CLIB_SOCKET_F_PASSCRED (1 << 6) + + + /* Transmit buffer. Holds data waiting to be written. */ + u8 *tx_buffer; + + /* Receive buffer. Holds data read from socket. */ + u8 *rx_buffer; + + /* Peer socket we are connected to. */ + struct sockaddr_in peer; + + /* Credentials, populated if CLIB_SOCKET_F_PASSCRED is set */ + pid_t pid; + uid_t uid; + gid_t gid; + + clib_error_t *(*write_func) (struct _socket_t * sock); + clib_error_t *(*read_func) (struct _socket_t * sock, int min_bytes); + clib_error_t *(*close_func) (struct _socket_t * sock); + clib_error_t *(*recvmsg_func) (struct _socket_t * s, void *msg, int msglen, + int fds[], int num_fds); + clib_error_t *(*sendmsg_func) (struct _socket_t * s, void *msg, int msglen, + int fds[], int num_fds); + uword private_data; +} clib_socket_t; + +/* socket config format is host:port. + Unspecified port causes a free one to be chosen starting + from IPPORT_USERRESERVED (5000). */ +clib_error_t *clib_socket_init (clib_socket_t * socket); + +clib_error_t *clib_socket_accept (clib_socket_t * server, + clib_socket_t * client); + +always_inline uword +clib_socket_is_server (clib_socket_t * sock) +{ + return (sock->flags & CLIB_SOCKET_F_IS_SERVER) != 0; +} + +always_inline uword +clib_socket_is_client (clib_socket_t * s) +{ + return !clib_socket_is_server (s); +} + +always_inline uword +clib_socket_is_connected (clib_socket_t * sock) +{ + return sock->fd > 0; +} + + +always_inline int +clib_socket_rx_end_of_file (clib_socket_t * s) +{ + return s->flags & CLIB_SOCKET_F_RX_END_OF_FILE; +} + +always_inline void * +clib_socket_tx_add (clib_socket_t * s, int n_bytes) +{ + u8 *result; + vec_add2 (s->tx_buffer, result, n_bytes); + return result; +} + +always_inline void +clib_socket_tx_add_va_formatted (clib_socket_t * s, char *fmt, va_list * va) +{ + s->tx_buffer = va_format (s->tx_buffer, fmt, va); +} + +always_inline clib_error_t * +clib_socket_tx (clib_socket_t * s) +{ + return s->write_func (s); +} + +always_inline clib_error_t * +clib_socket_rx (clib_socket_t * s, int n_bytes) +{ + return s->read_func (s, n_bytes); +} + +always_inline clib_error_t * +clib_socket_sendmsg (clib_socket_t * s, void *msg, int msglen, + int fds[], int num_fds) +{ + return s->sendmsg_func (s, msg, msglen, fds, num_fds); +} + +always_inline clib_error_t * +clib_socket_recvmsg (clib_socket_t * s, void *msg, int msglen, + int fds[], int num_fds) +{ + return s->recvmsg_func (s, msg, msglen, fds, num_fds); +} + +always_inline void +clib_socket_free (clib_socket_t * s) +{ + vec_free (s->tx_buffer); + vec_free (s->rx_buffer); + if (clib_mem_is_heap_object (s->config)) + vec_free (s->config); + memset (s, 0, sizeof (s[0])); +} + +always_inline clib_error_t * +clib_socket_close (clib_socket_t * sock) +{ + clib_error_t *err; + err = (*sock->close_func) (sock); + return err; +} + +void clib_socket_tx_add_formatted (clib_socket_t * s, char *fmt, ...); + +#endif /* _clib_included_socket_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/sparse_vec.h b/src/vppinfra/sparse_vec.h new file mode 100644 index 00000000..ec8f0a1c --- /dev/null +++ b/src/vppinfra/sparse_vec.h @@ -0,0 +1,244 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_sparse_vec_h +#define included_sparse_vec_h + +#include <vppinfra/vec.h> +#include <vppinfra/bitops.h> + +/* Sparsely indexed vectors. Basic idea taken from Hacker's delight. + Eliot added ranges. */ +typedef struct +{ + /* Bitmap one for each sparse index. */ + uword *is_member_bitmap; + + /* member_counts[i] = total number of members with j < i. */ + u16 *member_counts; + +#define SPARSE_VEC_IS_RANGE (1 << 0) +#define SPARSE_VEC_IS_VALID_RANGE (1 << 1) + u8 *range_flags; +} sparse_vec_header_t; + +always_inline sparse_vec_header_t * +sparse_vec_header (void *v) +{ + return vec_header (v, sizeof (sparse_vec_header_t)); +} + +/* Index 0 is always used to mark indices that are not valid in + sparse vector. For example, you look up V[0x1234] and 0x1234 is not + known you'll get 0 back as an index. */ +#define SPARSE_VEC_INVALID_INDEX (0) + +always_inline void * +sparse_vec_new (uword elt_bytes, uword sparse_index_bits) +{ + void *v; + sparse_vec_header_t *h; + word n; + + ASSERT (sparse_index_bits <= 16); + + v = _vec_resize (0, + /* length increment */ 8, + /* data bytes */ 8 * elt_bytes, + /* header bytes */ sizeof (h[0]), + /* data align */ 0); + + /* Make space for invalid entry (entry 0). */ + _vec_len (v) = 1; + + h = sparse_vec_header (v); + + n = sparse_index_bits - min_log2 (BITS (uword)); + if (n < 0) + n = 0; + n = 1ULL << n; + vec_resize (h->is_member_bitmap, n); + vec_resize (h->member_counts, n); + + return v; +} + +always_inline uword +sparse_vec_index_internal (void *v, + uword sparse_index, + uword maybe_range, u32 * insert) +{ + sparse_vec_header_t *h; + uword i, b, d, w; + u8 is_member; + + h = sparse_vec_header (v); + i = sparse_index / BITS (h->is_member_bitmap[0]); + b = (uword) 1 << (uword) (sparse_index % BITS (h->is_member_bitmap[0])); + + ASSERT (i < vec_len (h->is_member_bitmap)); + ASSERT (i < vec_len (h->member_counts)); + + w = h->is_member_bitmap[i]; + d = h->member_counts[i] + count_set_bits (w & (b - 1)); + + is_member = (w & b) != 0; + if (maybe_range) + { + u8 r = h->range_flags[d]; + u8 is_range, is_valid_range; + + is_range = maybe_range & (r & SPARSE_VEC_IS_RANGE); + is_valid_range = (r & SPARSE_VEC_IS_VALID_RANGE) != 0; + + is_member = is_range ? is_valid_range : is_member; + } + + if (insert) + { + *insert = !is_member; + if (!is_member) + { + uword j; + w |= b; + h->is_member_bitmap[i] = w; + for (j = i + 1; j < vec_len (h->member_counts); j++) + h->member_counts[j] += 1; + } + + return 1 + d; + } + + d = is_member ? d : 0; + + return is_member + d; +} + +always_inline uword +sparse_vec_index (void *v, uword sparse_index) +{ + return sparse_vec_index_internal (v, sparse_index, + /* maybe range */ 0, + /* insert? */ 0); +} + +always_inline void +sparse_vec_index2 (void *v, + u32 si0, u32 si1, u32 * i0_return, u32 * i1_return) +{ + sparse_vec_header_t *h; + uword b0, b1, w0, w1, v0, v1; + u32 i0, i1, d0, d1; + u8 is_member0, is_member1; + + h = sparse_vec_header (v); + + i0 = si0 / BITS (h->is_member_bitmap[0]); + i1 = si1 / BITS (h->is_member_bitmap[0]); + + b0 = (uword) 1 << (uword) (si0 % BITS (h->is_member_bitmap[0])); + b1 = (uword) 1 << (uword) (si1 % BITS (h->is_member_bitmap[0])); + + ASSERT (i0 < vec_len (h->is_member_bitmap)); + ASSERT (i1 < vec_len (h->is_member_bitmap)); + + ASSERT (i0 < vec_len (h->member_counts)); + ASSERT (i1 < vec_len (h->member_counts)); + + w0 = h->is_member_bitmap[i0]; + w1 = h->is_member_bitmap[i1]; + + v0 = w0 & (b0 - 1); + v1 = w1 & (b1 - 1); + + /* Speculate that masks will have zero or one bits set. */ + d0 = h->member_counts[i0] + (v0 != 0); + d1 = h->member_counts[i1] + (v1 != 0); + + /* Validate speculation. */ + if (PREDICT_FALSE (!is_pow2 (v0) || !is_pow2 (v1))) + { + d0 += count_set_bits (v0) - (v0 != 0); + d1 += count_set_bits (v1) - (v1 != 0); + } + + is_member0 = (w0 & b0) != 0; + is_member1 = (w1 & b1) != 0; + + d0 = is_member0 ? d0 : 0; + d1 = is_member1 ? d1 : 0; + + *i0_return = is_member0 + d0; + *i1_return = is_member1 + d1; +} + +#define sparse_vec_free(v) vec_free(v) + +#define sparse_vec_elt_at_index(v,i) \ + vec_elt_at_index ((v), sparse_vec_index ((v), (i))) + +#define sparse_vec_validate(v,i) \ +({ \ + uword _i; \ + u32 _insert; \ + \ + if (! (v)) \ + (v) = sparse_vec_new (sizeof ((v)[0]), BITS (u16)); \ + \ + _i = sparse_vec_index_internal ((v), (i), \ + /* maybe range */ 0, \ + /* insert? */ &_insert); \ + if (_insert) \ + vec_insert_ha ((v), 1, _i, \ + /* header size */ sizeof (sparse_vec_header_t), \ + /* align */ 0); \ + \ + /* Invalid index is 0. */ \ + ASSERT (_i > 0); \ + \ + (v) + _i; \ +}) + +#endif /* included_sparse_vec_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/std-formats.c b/src/vppinfra/std-formats.c new file mode 100644 index 00000000..ac98f999 --- /dev/null +++ b/src/vppinfra/std-formats.c @@ -0,0 +1,330 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/format.h> +#include <ctype.h> + +/* Format vectors. */ +u8 * +format_vec32 (u8 * s, va_list * va) +{ + u32 *v = va_arg (*va, u32 *); + char *fmt = va_arg (*va, char *); + uword i; + for (i = 0; i < vec_len (v); i++) + { + if (i > 0) + s = format (s, ", "); + s = format (s, fmt, v[i]); + } + return s; +} + +u8 * +format_vec_uword (u8 * s, va_list * va) +{ + uword *v = va_arg (*va, uword *); + char *fmt = va_arg (*va, char *); + uword i; + for (i = 0; i < vec_len (v); i++) + { + if (i > 0) + s = format (s, ", "); + s = format (s, fmt, v[i]); + } + return s; +} + +/* Ascii buffer and length. */ +u8 * +format_ascii_bytes (u8 * s, va_list * va) +{ + u8 *v = va_arg (*va, u8 *); + uword n_bytes = va_arg (*va, uword); + vec_add (s, v, n_bytes); + return s; +} + +/* Format hex dump. */ +u8 * +format_hex_bytes (u8 * s, va_list * va) +{ + u8 *bytes = va_arg (*va, u8 *); + int n_bytes = va_arg (*va, int); + uword i; + + /* Print short or long form depending on byte count. */ + uword short_form = n_bytes <= 32; + uword indent = format_get_indent (s); + + if (n_bytes == 0) + return s; + + for (i = 0; i < n_bytes; i++) + { + if (!short_form && (i % 32) == 0) + s = format (s, "%08x: ", i); + + s = format (s, "%02x", bytes[i]); + + if (!short_form && ((i + 1) % 32) == 0 && (i + 1) < n_bytes) + s = format (s, "\n%U", format_white_space, indent); + } + + return s; +} + +/* Add variable number of spaces. */ +u8 * +format_white_space (u8 * s, va_list * va) +{ + uword n = va_arg (*va, uword); + while (n-- > 0) + vec_add1 (s, ' '); + return s; +} + +u8 * +format_time_interval (u8 * s, va_list * args) +{ + u8 *fmt = va_arg (*args, u8 *); + f64 t = va_arg (*args, f64); + u8 *f; + + const f64 seconds_per_minute = 60; + const f64 seconds_per_hour = 60 * seconds_per_minute; + const f64 seconds_per_day = 24 * seconds_per_hour; + uword days, hours, minutes, secs, msecs, usecs; + + days = t / seconds_per_day; + t -= days * seconds_per_day; + + hours = t / seconds_per_hour; + t -= hours * seconds_per_hour; + + minutes = t / seconds_per_minute; + t -= minutes * seconds_per_minute; + + secs = t; + t -= secs; + + msecs = 1e3 * t; + usecs = 1e6 * t; + + for (f = fmt; *f; f++) + { + uword what, c; + char *what_fmt = "%d"; + + switch (c = *f) + { + default: + vec_add1 (s, c); + continue; + + case 'd': + what = days; + what_fmt = "%d"; + break; + case 'h': + what = hours; + what_fmt = "%02d"; + break; + case 'm': + what = minutes; + what_fmt = "%02d"; + break; + case 's': + what = secs; + what_fmt = "%02d"; + break; + case 'f': + what = msecs; + what_fmt = "%03d"; + break; + case 'u': + what = usecs; + what_fmt = "%06d"; + break; + } + + s = format (s, what_fmt, what); + } + + return s; +} + +/* Unparse memory size e.g. 100, 100k, 100m, 100g. */ +u8 * +format_memory_size (u8 * s, va_list * va) +{ + uword size = va_arg (*va, uword); + uword l, u, log_u; + + l = size > 0 ? min_log2 (size) : 0; + if (l < 10) + log_u = 0; + else if (l < 20) + log_u = 10; + else if (l < 30) + log_u = 20; + else + log_u = 30; + + u = (uword) 1 << log_u; + if (size & (u - 1)) + s = format (s, "%.2f", (f64) size / (f64) u); + else + s = format (s, "%d", size >> log_u); + + if (log_u != 0) + s = format (s, "%c", " kmg"[log_u / 10]); + + return s; +} + +/* Parse memory size e.g. 100, 100k, 100m, 100g. */ +uword +unformat_memory_size (unformat_input_t * input, va_list * va) +{ + uword amount, shift, c; + uword *result = va_arg (*va, uword *); + + if (!unformat (input, "%wd%_", &amount)) + return 0; + + c = unformat_get_input (input); + switch (c) + { + case 'k': + case 'K': + shift = 10; + break; + case 'm': + case 'M': + shift = 20; + break; + case 'g': + case 'G': + shift = 30; + break; + default: + shift = 0; + unformat_put_input (input); + break; + } + + *result = amount << shift; + return 1; +} + +/* Format c identifier: e.g. a_name -> "a name". + Words for both vector names and null terminated c strings. */ +u8 * +format_c_identifier (u8 * s, va_list * va) +{ + u8 *id = va_arg (*va, u8 *); + uword i, l; + + l = ~0; + if (clib_mem_is_vec (id)) + l = vec_len (id); + + if (id) + for (i = 0; id[i] != 0 && i < l; i++) + { + u8 c = id[i]; + + if (c == '_') + c = ' '; + vec_add1 (s, c); + } + + return s; +} + +u8 * +format_hexdump (u8 * s, va_list * args) +{ + u8 *data = va_arg (*args, u8 *); + uword len = va_arg (*args, uword); + int i, index = 0; + const int line_len = 16; + u8 *line_hex = 0; + u8 *line_str = 0; + uword indent = format_get_indent (s); + + if (!len) + return s; + + for (i = 0; i < len; i++) + { + line_hex = format (line_hex, "%02x ", data[i]); + line_str = format (line_str, "%c", isprint (data[i]) ? data[i] : '.'); + if (!((i + 1) % line_len)) + { + s = format (s, "%U%05x: %v[%v]", + format_white_space, index ? indent : 0, + index, line_hex, line_str); + if (i < len - 1) + s = format (s, "\n"); + index = i + 1; + vec_reset_length (line_hex); + vec_reset_length (line_str); + } + } + + while (i++ % line_len) + line_hex = format (line_hex, " "); + + if (vec_len (line_hex)) + s = format (s, "%U%05x: %v[%v]", + format_white_space, indent, index, line_hex, line_str); + + vec_free (line_hex); + vec_free (line_str); + + return s; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/string.c b/src/vppinfra/string.c new file mode 100644 index 00000000..ba21e7b3 --- /dev/null +++ b/src/vppinfra/string.c @@ -0,0 +1,94 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2006 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/string.h> +#include <vppinfra/error.h> + +/* Exchanges source and destination. */ +void +clib_memswap (void *_a, void *_b, uword bytes) +{ + uword pa = pointer_to_uword (_a); + uword pb = pointer_to_uword (_b); + +#define _(TYPE) \ + if (0 == ((pa | pb) & (sizeof (TYPE) - 1))) \ + { \ + TYPE * a = uword_to_pointer (pa, TYPE *); \ + TYPE * b = uword_to_pointer (pb, TYPE *); \ + \ + while (bytes >= 2*sizeof (TYPE)) \ + { \ + TYPE a0, a1, b0, b1; \ + bytes -= 2*sizeof (TYPE); \ + a += 2; \ + b += 2; \ + a0 = a[-2]; a1 = a[-1]; \ + b0 = b[-2]; b1 = b[-1]; \ + a[-2] = b0; a[-1] = b1; \ + b[-2] = a0; b[-1] = a1; \ + } \ + pa = pointer_to_uword (a); \ + pb = pointer_to_uword (b); \ + } + + if (BITS (uword) == BITS (u64)) + _(u64); + _(u32); + _(u16); + _(u8); + +#undef _ + + ASSERT (bytes < 2); + if (bytes) + { + u8 *a = uword_to_pointer (pa, u8 *); + u8 *b = uword_to_pointer (pb, u8 *); + u8 a0 = a[0], b0 = b[0]; + a[0] = b0; + b[0] = a0; + } +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/string.h b/src/vppinfra/string.h new file mode 100644 index 00000000..69a99a3f --- /dev/null +++ b/src/vppinfra/string.h @@ -0,0 +1,83 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_string_h +#define included_clib_string_h + +#include <vppinfra/clib.h> /* for CLIB_LINUX_KERNEL */ +#include <vppinfra/vector.h> + +#ifdef CLIB_LINUX_KERNEL +#include <linux/string.h> +#endif + +#ifdef CLIB_UNIX +#include <string.h> +#endif + +#ifdef CLIB_STANDALONE +#include <vppinfra/standalone_string.h> +#endif + +/* Exchanges source and destination. */ +void clib_memswap (void *_a, void *_b, uword bytes); + +/* + * the vector unit memcpy variants confuse coverity + * so don't let it anywhere near them. + */ +#ifndef __COVERITY__ +#if __AVX__ +#include <vppinfra/memcpy_avx.h> +#elif __SSSE3__ +#include <vppinfra/memcpy_sse3.h> +#else +#define clib_memcpy(a,b,c) memcpy(a,b,c) +#endif +#else /* __COVERITY__ */ +#define clib_memcpy(a,b,c) memcpy(a,b,c) +#endif + +#endif /* included_clib_string_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_bihash_template.c b/src/vppinfra/test_bihash_template.c new file mode 100644 index 00000000..589c815d --- /dev/null +++ b/src/vppinfra/test_bihash_template.c @@ -0,0 +1,369 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vppinfra/time.h> +#include <vppinfra/cache.h> +#include <vppinfra/error.h> + +#include <vppinfra/bihash_8_8.h> +#include <vppinfra/bihash_template.h> + +#include <vppinfra/bihash_template.c> + +typedef struct +{ + u64 seed; + u32 nbuckets; + u32 nitems; + u32 search_iter; + int careful_delete_tests; + int verbose; + int non_random_keys; + uword *key_hash; + u64 *keys; + BVT (clib_bihash) hash; + clib_time_t clib_time; + + unformat_input_t *input; + +} test_main_t; + +test_main_t test_main; + +uword +vl (void *v) +{ + return vec_len (v); +} + +static clib_error_t * +test_bihash_vec64 (test_main_t * tm) +{ + u32 user_buckets = 1228800; + u32 user_memory_size = 209715200; + BVT (clib_bihash_kv) kv; + int i, j; + f64 before; + f64 *cum_times = 0; + BVT (clib_bihash) * h; + + h = &tm->hash; + + BV (clib_bihash_init) (h, "test", user_buckets, user_memory_size); + + before = clib_time_now (&tm->clib_time); + + for (j = 0; j < 10; j++) + { + for (i = 1; i <= j * 1000 + 1; i++) + { + kv.key = i; + kv.value = 1; + + BV (clib_bihash_add_del) (h, &kv, 1 /* is_add */ ); + } + + vec_add1 (cum_times, clib_time_now (&tm->clib_time) - before); + } + + for (j = 0; j < vec_len (cum_times); j++) + fformat (stdout, "Cum time for %d: %.4f (us)\n", (j + 1) * 1000, + cum_times[j] * 1e6); + + return 0; +} + +static clib_error_t * +test_bihash (test_main_t * tm) +{ + int i, j; + uword *p; + uword total_searches; + f64 before, delta; + BVT (clib_bihash) * h; + BVT (clib_bihash_kv) kv; + + h = &tm->hash; + + BV (clib_bihash_init) (h, "test", tm->nbuckets, 3ULL << 30); + + fformat (stdout, "Pick %lld unique %s keys...\n", + tm->nitems, tm->non_random_keys ? "non-random" : "random"); + + for (i = 0; i < tm->nitems; i++) + { + u64 rndkey; + + if (tm->non_random_keys == 0) + { + + again: + rndkey = random_u64 (&tm->seed); + + p = hash_get (tm->key_hash, rndkey); + if (p) + goto again; + } + else + rndkey = (u64) (i + 1) << 16; + + hash_set (tm->key_hash, rndkey, i + 1); + vec_add1 (tm->keys, rndkey); + } + + fformat (stdout, "Add items...\n"); + for (i = 0; i < tm->nitems; i++) + { + kv.key = tm->keys[i]; + kv.value = i + 1; + + BV (clib_bihash_add_del) (h, &kv, 1 /* is_add */ ); + + if (tm->verbose > 1) + { + fformat (stdout, "--------------------\n"); + fformat (stdout, "After adding key %llu value %lld...\n", + tm->keys[i], (u64) (i + 1)); + fformat (stdout, "%U", BV (format_bihash), h, + 2 /* very verbose */ ); + } + } + + fformat (stdout, "%U", BV (format_bihash), h, 0 /* very verbose */ ); + + fformat (stdout, "Search for items %d times...\n", tm->search_iter); + + before = clib_time_now (&tm->clib_time); + + for (j = 0; j < tm->search_iter; j++) + { + for (i = 0; i < tm->nitems; i++) + { + kv.key = tm->keys[i]; + if (BV (clib_bihash_search) (h, &kv, &kv) < 0) + if (BV (clib_bihash_search) (h, &kv, &kv) < 0) + clib_warning ("[%d] search for key %lld failed unexpectedly\n", + i, tm->keys[i]); + if (kv.value != (u64) (i + 1)) + clib_warning + ("[%d] search for key %lld returned %lld, not %lld\n", i, + tm->keys, kv.value, (u64) (i + 1)); + } + } + + delta = clib_time_now (&tm->clib_time) - before; + total_searches = (uword) tm->search_iter * (uword) tm->nitems; + + if (delta > 0) + fformat (stdout, "%.f searches per second\n", + ((f64) total_searches) / delta); + + fformat (stdout, "%lld searches in %.6f seconds\n", total_searches, delta); + + fformat (stdout, "Standard E-hash search for items %d times...\n", + tm->search_iter); + + before = clib_time_now (&tm->clib_time); + + for (j = 0; j < tm->search_iter; j++) + { + for (i = 0; i < tm->nitems; i++) + { + p = hash_get (tm->key_hash, tm->keys[i]); + if (p == 0 || p[0] != (uword) (i + 1)) + clib_warning ("ugh, couldn't find %lld\n", tm->keys[i]); + } + } + + delta = clib_time_now (&tm->clib_time) - before; + total_searches = (uword) tm->search_iter * (uword) tm->nitems; + + fformat (stdout, "%lld searches in %.6f seconds\n", total_searches, delta); + + if (delta > 0) + fformat (stdout, "%.f searches per second\n", + ((f64) total_searches) / delta); + + fformat (stdout, "Delete items...\n"); + + for (i = 0; i < tm->nitems; i++) + { + int j; + int rv; + + kv.key = tm->keys[i]; + kv.value = (u64) (i + 1); + rv = BV (clib_bihash_add_del) (h, &kv, 0 /* is_add */ ); + + if (rv < 0) + clib_warning ("delete key %lld not ok but should be", tm->keys[i]); + + if (tm->careful_delete_tests) + { + for (j = 0; j < tm->nitems; j++) + { + kv.key = tm->keys[j]; + rv = BV (clib_bihash_search) (h, &kv, &kv); + if (j <= i && rv >= 0) + { + clib_warning + ("i %d j %d search ok but should not be, value %lld", + i, j, kv.value); + } + if (j > i && rv < 0) + { + clib_warning ("i %d j %d search not ok but should be", + i, j); + } + } + } + } + + fformat (stdout, "After deletions, should be empty...\n"); + + fformat (stdout, "%U", BV (format_bihash), h, 0 /* very verbose */ ); + return 0; +} + +clib_error_t * +test_bihash_cache (test_main_t * tm) +{ + u32 lru; + BVT (clib_bihash_bucket) _b, *b = &_b; + + BV (clib_bihash_reset_cache) (b); + + fformat (stdout, "Initial LRU config: %U\n", BV (format_bihash_lru), b); + + BV (clib_bihash_update_lru_not_inline) (b, 3); + + fformat (stdout, "use slot 3, LRU config: %U\n", BV (format_bihash_lru), b); + + BV (clib_bihash_update_lru) (b, 1); + + fformat (stdout, "use slot 1 LRU config: %U\n", BV (format_bihash_lru), b); + + lru = BV (clib_bihash_get_lru) (b); + + fformat (stdout, "least-recently-used is %d\n", lru); + + BV (clib_bihash_update_lru) (b, 4); + + fformat (stdout, "use slot 4 LRU config: %U\n", BV (format_bihash_lru), b); + + lru = BV (clib_bihash_get_lru) (b); + + fformat (stdout, "least-recently-used is %d\n", lru); + + return 0; +} + +clib_error_t * +test_bihash_main (test_main_t * tm) +{ + unformat_input_t *i = tm->input; + clib_error_t *error; + int which = 0; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "seed %u", &tm->seed)) + ; + + else if (unformat (i, "nbuckets %d", &tm->nbuckets)) + ; + else if (unformat (i, "non-random-keys")) + tm->non_random_keys = 1; + else if (unformat (i, "nitems %d", &tm->nitems)) + ; + else if (unformat (i, "careful %d", &tm->careful_delete_tests)) + ; + else if (unformat (i, "verbose %d", &tm->verbose)) + ; + else if (unformat (i, "search %d", &tm->search_iter)) + ; + else if (unformat (i, "vec64")) + which = 1; + else if (unformat (i, "cache")) + which = 2; + + else if (unformat (i, "verbose")) + tm->verbose = 1; + else + return clib_error_return (0, "unknown input '%U'", + format_unformat_error, i); + } + + switch (which) + { + case 0: + error = test_bihash (tm); + break; + + case 1: + error = test_bihash_vec64 (tm); + break; + + case 2: + error = test_bihash_cache (tm); + break; + + default: + return clib_error_return (0, "no such test?"); + } + + return error; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + clib_error_t *error; + test_main_t *tm = &test_main; + + clib_mem_init (0, 3ULL << 30); + + tm->input = &i; + tm->seed = 0xdeaddabe; + + tm->nbuckets = 2; + tm->nitems = 5; + tm->verbose = 1; + tm->search_iter = 1; + tm->careful_delete_tests = 0; + tm->key_hash = hash_create (0, sizeof (uword)); + clib_time_init (&tm->clib_time); + + unformat_init_command_line (&i, argv); + error = test_bihash_main (tm); + unformat_free (&i); + + if (error) + { + clib_error_report (error); + return 1; + } + return 0; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_dlist.c b/src/vppinfra/test_dlist.c new file mode 100644 index 00000000..c5535c85 --- /dev/null +++ b/src/vppinfra/test_dlist.c @@ -0,0 +1,193 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vppinfra/dlist.h> + +typedef struct +{ + dlist_elt_t *test_pool; + u32 head_index; +} test_main_t; + +test_main_t test_main; + +int +test_dlist_main (unformat_input_t * input) +{ + test_main_t *tm = &test_main; + dlist_elt_t *head, *elt; + u32 elt_index, head_index; + u32 value; + int i; + + pool_get (tm->test_pool, head); + head_index = head - tm->test_pool; + clib_dlist_init (tm->test_pool, head - tm->test_pool); + + for (i = 1; i <= 3; i++) + { + pool_get (tm->test_pool, elt); + elt_index = elt - tm->test_pool; + + clib_dlist_init (tm->test_pool, elt_index); + elt->value = i; + clib_dlist_addtail (tm->test_pool, head_index, elt_index); + } + + head = pool_elt_at_index (tm->test_pool, head_index); + + fformat (stdout, "Dump forward links\n"); + elt_index = head->next; + i = 1; + value = 0; + while (value != ~0) + { + elt = pool_elt_at_index (tm->test_pool, elt_index); + fformat (stdout, "elt %d value %d\n", i++, elt->value); + elt_index = elt->next; + value = elt->value; + } + + fformat (stdout, "Dump reverse links\n"); + elt_index = head->prev; + i = 1; + value = 0; + while (value != ~0) + { + elt = pool_elt_at_index (tm->test_pool, elt_index); + fformat (stdout, "elt %d value %d\n", i++, elt->value); + elt_index = elt->prev; + value = elt->value; + } + + fformat (stdout, "remove first element\n"); + + elt_index = clib_dlist_remove_head (tm->test_pool, head_index); + elt = pool_elt_at_index (tm->test_pool, elt_index); + + fformat (stdout, "removed index %d value %d\n", elt_index, elt->value); + + head = pool_elt_at_index (tm->test_pool, head_index); + + fformat (stdout, "Dump forward links\n"); + elt_index = head->next; + i = 1; + value = 0; + while (value != ~0) + { + elt = pool_elt_at_index (tm->test_pool, elt_index); + fformat (stdout, "elt %d value %d\n", i++, elt->value); + elt_index = elt->next; + value = elt->value; + } + + fformat (stdout, "Dump reverse links\n"); + elt_index = head->prev; + i = 1; + value = 0; + while (value != ~0) + { + elt = pool_elt_at_index (tm->test_pool, elt_index); + fformat (stdout, "elt %d value %d\n", i++, elt->value); + elt_index = elt->prev; + value = elt->value; + } + + fformat (stdout, "re-insert index %d value %d at head\n", 1, 1); + + clib_dlist_addhead (tm->test_pool, head_index, 1); + + fformat (stdout, "Dump forward links\n"); + elt_index = head->next; + i = 1; + value = 0; + while (value != ~0) + { + elt = pool_elt_at_index (tm->test_pool, elt_index); + fformat (stdout, "elt %d value %d\n", i++, elt->value); + elt_index = elt->next; + value = elt->value; + } + + fformat (stdout, "Dump reverse links\n"); + elt_index = head->prev; + i = 1; + value = 0; + while (value != ~0) + { + elt = pool_elt_at_index (tm->test_pool, elt_index); + fformat (stdout, "elt %d value %d\n", i++, elt->value); + elt_index = elt->prev; + value = elt->value; + } + + fformat (stdout, "Remove middle element\n"); + + clib_dlist_remove (tm->test_pool, 2); + elt = pool_elt_at_index (tm->test_pool, 2); + + fformat (stdout, "removed index %d value %d\n", elt_index, elt->value); + + fformat (stdout, "Dump forward links\n"); + elt_index = head->next; + i = 1; + value = 0; + while (value != ~0) + { + elt = pool_elt_at_index (tm->test_pool, elt_index); + fformat (stdout, "elt %d value %d\n", i++, elt->value); + elt_index = elt->next; + value = elt->value; + } + + fformat (stdout, "Dump reverse links\n"); + elt_index = head->prev; + i = 1; + value = 0; + while (value != ~0) + { + elt = pool_elt_at_index (tm->test_pool, elt_index); + fformat (stdout, "elt %d value %d\n", i++, elt->value); + elt_index = elt->prev; + value = elt->value; + } + + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + clib_mem_init (0, 3ULL << 30); + + unformat_init_command_line (&i, argv); + ret = test_dlist_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_elf.c b/src/vppinfra/test_elf.c new file mode 100644 index 00000000..84fe0776 --- /dev/null +++ b/src/vppinfra/test_elf.c @@ -0,0 +1,217 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2008 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/elf.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +#ifndef CLIB_UNIX +#error "unix only" +#endif + +static clib_error_t * +elf_set_interpreter (elf_main_t * em, char *interp) +{ + elf_segment_t *g; + elf_section_t *s; + clib_error_t *error; + + vec_foreach (g, em->segments) + { + if (g->header.type == ELF_SEGMENT_INTERP) + break; + } + + if (g >= vec_end (em->segments)) + return clib_error_return (0, "interpreter not found"); + + if (g->header.memory_size < 1 + strlen (interp)) + return clib_error_return (0, + "given interpreter does not fit; must be less than %d bytes (`%s' given)", + g->header.memory_size, interp); + + error = + elf_get_section_by_start_address (em, g->header.virtual_address, &s); + if (error) + return error; + + /* Put in new null terminated string. */ + memset (s->contents, 0, vec_len (s->contents)); + clib_memcpy (s->contents, interp, strlen (interp)); + + return 0; +} + +static void +delete_dynamic_rpath_entries_from_section (elf_main_t * em, elf_section_t * s) +{ + elf64_dynamic_entry_t *e; + elf64_dynamic_entry_t *new_es = 0; + + vec_foreach (e, em->dynamic_entries) + { + switch (e->type) + { + case ELF_DYNAMIC_ENTRY_RPATH: + case ELF_DYNAMIC_ENTRY_RUN_PATH: + break; + + default: + vec_add1 (new_es, e[0]); + break; + } + } + + /* Pad so as to keep section size constant. */ + { + elf64_dynamic_entry_t e_end; + e_end.type = ELF_DYNAMIC_ENTRY_END; + e_end.data = 0; + while (vec_len (new_es) < vec_len (em->dynamic_entries)) + vec_add1 (new_es, e_end); + } + + elf_set_dynamic_entries (em); +} + +static void +elf_delete_dynamic_rpath_entries (elf_main_t * em) +{ + elf_section_t *s; + + vec_foreach (s, em->sections) + { + switch (s->header.type) + { + case ELF_SECTION_DYNAMIC: + delete_dynamic_rpath_entries_from_section (em, s); + break; + + default: + break; + } + } +} + +typedef struct +{ + elf_main_t elf_main; + char *input_file; + char *output_file; + char *set_interpreter; + int verbose; +} elf_test_main_t; + +int +main (int argc, char *argv[]) +{ + elf_test_main_t _tm, *tm = &_tm; + elf_main_t *em = &tm->elf_main; + unformat_input_t i; + clib_error_t *error = 0; + + memset (tm, 0, sizeof (tm[0])); + + unformat_init_command_line (&i, argv); + while (unformat_check_input (&i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (&i, "in %s", &tm->input_file)) + ; + else if (unformat (&i, "out %s", &tm->output_file)) + ; + else if (unformat (&i, "set-interpreter %s", &tm->set_interpreter)) + ; + else if (unformat (&i, "verbose")) + tm->verbose = ~0; + else if (unformat (&i, "verbose-symbols")) + tm->verbose |= FORMAT_ELF_MAIN_SYMBOLS; + else if (unformat (&i, "verbose-relocations")) + tm->verbose |= FORMAT_ELF_MAIN_RELOCATIONS; + else if (unformat (&i, "verbose-dynamic")) + tm->verbose |= FORMAT_ELF_MAIN_DYNAMIC; + else + { + error = unformat_parse_error (&i); + goto done; + } + } + + if (!tm->input_file) + { + clib_warning ("No input file! Using test_bihash_template"); + tm->input_file = "test_bihash_template"; + } + + error = elf_read_file (em, tm->input_file); + if (error) + goto done; + + if (tm->set_interpreter) + { + clib_error_t *error = elf_set_interpreter (em, tm->set_interpreter); + if (error) + goto done; + elf_delete_dynamic_rpath_entries (em); + } + + if (tm->verbose) + fformat (stdout, "%U", format_elf_main, em, tm->verbose); + + if (tm->output_file) + error = elf_write_file (em, tm->output_file); + + elf_main_free (em); + +done: + if (error) + { + clib_error_report (error); + return 1; + } + else + return 0; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_elog.c b/src/vppinfra/test_elog.c new file mode 100644 index 00000000..1cf5ba1f --- /dev/null +++ b/src/vppinfra/test_elog.c @@ -0,0 +1,315 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/elog.h> +#include <vppinfra/error.h> +#include <vppinfra/format.h> +#include <vppinfra/random.h> +#include <vppinfra/serialize.h> +#include <vppinfra/unix.h> + +int +test_elog_main (unformat_input_t * input) +{ + clib_error_t *error = 0; + u32 i, n_iter, seed, max_events; + elog_main_t _em, *em = &_em; + u32 verbose; + f64 min_sample_time; + char *dump_file, *load_file, *merge_file, **merge_files; + u8 *tag, **tags; + f64 align_tweak; + f64 *align_tweaks; + + n_iter = 100; + max_events = 100000; + seed = 1; + verbose = 0; + dump_file = 0; + load_file = 0; + merge_files = 0; + tags = 0; + align_tweaks = 0; + min_sample_time = 2; + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "iter %d", &n_iter)) + ; + else if (unformat (input, "seed %d", &seed)) + ; + else if (unformat (input, "dump %s", &dump_file)) + ; + else if (unformat (input, "load %s", &load_file)) + ; + else if (unformat (input, "tag %s", &tag)) + vec_add1 (tags, tag); + else if (unformat (input, "merge %s", &merge_file)) + vec_add1 (merge_files, merge_file); + + else if (unformat (input, "verbose %=", &verbose, 1)) + ; + else if (unformat (input, "max-events %d", &max_events)) + ; + else if (unformat (input, "sample-time %f", &min_sample_time)) + ; + else if (unformat (input, "align-tweak %f", &align_tweak)) + vec_add1 (align_tweaks, align_tweak); + else + { + error = clib_error_create ("unknown input `%U'\n", + format_unformat_error, input); + goto done; + } + } + +#ifdef CLIB_UNIX + if (load_file) + { + if ((error = elog_read_file (em, load_file))) + goto done; + } + + else if (merge_files) + { + uword i; + elog_main_t *ems; + vec_clone (ems, merge_files); + + /* Supply default tags as needed */ + if (vec_len (tags) < vec_len (ems)) + { + for (i = vec_len (tags); i < vec_len (ems); i++) + vec_add1 (tags, format (0, "F%d%c", i, 0)); + } + + elog_init (em, max_events); + for (i = 0; i < vec_len (ems); i++) + { + if ((error = + elog_read_file (i == 0 ? em : &ems[i], merge_files[i]))) + goto done; + if (i > 0) + { + align_tweak = 0.0; + if (i <= vec_len (align_tweaks)) + align_tweak = align_tweaks[i - 1]; + elog_merge (em, tags[0], &ems[i], tags[i], align_tweak); + tags[0] = 0; + } + } + } + + else +#endif /* CLIB_UNIX */ + { + f64 t[2]; + + elog_init (em, max_events); + elog_enable_disable (em, 1); + t[0] = unix_time_now (); + + for (i = 0; i < n_iter; i++) + { + u32 j, n, sum; + + n = 1 + (random_u32 (&seed) % 128); + sum = 0; + for (j = 0; j < n; j++) + sum += random_u32 (&seed); + + { + ELOG_TYPE_XF (e); + ELOG (em, e, sum); + } + + { + ELOG_TYPE_XF (e); + ELOG (em, e, sum + 1); + } + + { + struct + { + u32 string_index; + f32 f; + } *d; + ELOG_TYPE_DECLARE (e) = + { + .format = "fumble %s %.9f",.format_args = + "t4f4",.n_enum_strings = 4,.enum_strings = + { + "string0", "string1", "string2", "string3",},}; + + d = ELOG_DATA (em, e); + + d->string_index = sum & 3; + d->f = (sum & 0xff) / 128.; + } + + { + ELOG_TYPE_DECLARE (e) = + { + .format = "bar %d.%d.%d.%d",.format_args = "i1i1i1i1",}; + ELOG_TRACK (my_track); + u8 *d = ELOG_TRACK_DATA (em, e, my_track); + d[0] = i + 0; + d[1] = i + 1; + d[2] = i + 2; + d[3] = i + 3; + } + + { + ELOG_TYPE_DECLARE (e) = + { + .format = "bar `%s'",.format_args = "s20",}; + struct + { + char s[20]; + } *d; + u8 *v; + + d = ELOG_DATA (em, e); + v = format (0, "foo %d%c", i, 0); + clib_memcpy (d->s, v, clib_min (vec_len (v), sizeof (d->s))); + } + + { + ELOG_TYPE_DECLARE (e) = + { + .format = "bar `%s'",.format_args = "T4",}; + struct + { + u32 offset; + } *d; + + d = ELOG_DATA (em, e); + d->offset = elog_string (em, "string table %d", i); + } + } + + do + { + t[1] = unix_time_now (); + } + while (t[1] - t[0] < min_sample_time); + } + +#ifdef CLIB_UNIX + if (dump_file) + { + if ((error = + elog_write_file (em, dump_file, 0 /* do not flush ring */ ))) + goto done; + } +#endif + + if (verbose) + { + elog_event_t *e, *es; + es = elog_get_events (em); + vec_foreach (e, es) + { + clib_warning ("%18.9f: %12U %U\n", e->time, + format_elog_track, em, e, format_elog_event, em, e); + } + } + +done: + if (error) + clib_error_report (error); + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int r; + + clib_mem_init (0, 3ULL << 30); + + unformat_init_command_line (&i, argv); + r = test_elog_main (&i); + unformat_free (&i); + return r; +} +#endif + +/** + * @brief GDB callable function: vl - Return vector length of vector + * + * @param *p - void - address of vector + * + * @return length - u32 + * + */ +u32 +vl (void *p) +{ + return vec_len (p); +} + +/** + * @brief GDB callable function: pe - call pool_elts - number of elements in a pool + * + * @param *v - void - address of pool + * + * @return number - uword + * + */ +#include <vppinfra/pool.h> +uword +pe (void *v) +{ + return (pool_elts (v)); +} + +#include <vppinfra/hash.h> +uword +he (void *v) +{ + return (hash_elts (v)); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_fifo.c b/src/vppinfra/test_fifo.c new file mode 100644 index 00000000..45392bc3 --- /dev/null +++ b/src/vppinfra/test_fifo.c @@ -0,0 +1,144 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/fifo.h> +#include <vppinfra/random.h> + +typedef struct +{ + int a, b, c; +} A; + +always_inline void +A_set (A * a, int k) +{ + a->a = 1 * k; + a->b = 2 * k; + a->c = 3 * k; +} + +always_inline int +A_is_valid (A * a, int k) +{ + return a->a == 1 * k && a->b == 2 * k && a->c == 3 * k; +} + +int +test_fifo_main (unformat_input_t * input) +{ + u32 n_added, n_removed, i, j, n_iter, seed, verbose; + A *as = 0, *a; + + n_iter = 1000; + seed = random_default_seed (); + verbose = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "iter %d", &n_iter)) + ; + else if (unformat (input, "seed %d", &seed)) + ; + else if (unformat (input, "verbose %=", &verbose, 1)) + ; + else + { + clib_warning ("unknown input `%U'\n", format_unformat_error, input); + return 1; + } + } + + if (verbose) + clib_warning ("iter %d seed %d\n", n_iter, seed); + + n_added = n_removed = 0; + for (i = 0; i < n_iter; i++) + { + if (clib_fifo_elts (as) > 0 && (random_u32 (&seed) & 1)) + { + A tmp; + clib_fifo_sub1 (as, tmp); + ASSERT (A_is_valid (&tmp, n_removed)); + n_removed++; + } + else + { + clib_fifo_add2 (as, a); + A_set (a, n_added); + n_added++; + } + + ASSERT (clib_fifo_elts (as) == n_added - n_removed); + + j = 0; + /* *INDENT-OFF* */ + clib_fifo_foreach (a, as, { + ASSERT (A_is_valid (a, n_removed + j)); + j++; + }); + /* *INDENT-ON* */ + + ASSERT (j == clib_fifo_elts (as)); + } + + clib_fifo_free (as); + + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int r; + + unformat_init_command_line (&i, argv); + r = test_fifo_main (&i); + unformat_free (&i); + + return r; +} +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_format.c b/src/vppinfra/test_format.c new file mode 100644 index 00000000..cc95a00e --- /dev/null +++ b/src/vppinfra/test_format.c @@ -0,0 +1,199 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/format.h> + +static int verbose; +static u8 *test_vec; + +static u8 * +format_test1 (u8 * s, va_list * va) +{ + uword x = va_arg (*va, uword); + f64 y = va_arg (*va, f64); + return format (s, "%12d %12f%12.4e", x, y, y); +} + +static int +expectation (const char *exp, char *fmt, ...) +{ + int ret = 0; + + va_list va; + va_start (va, fmt); + test_vec = va_format (test_vec, fmt, &va); + va_end (va); + + vec_add1 (test_vec, 0); + if (strcmp (exp, (char *) test_vec)) + { + fformat (stdout, "FAIL: %s (expected vs. result)\n\"%s\"\n\"%v\"\n", + fmt, exp, test_vec); + ret = 1; + } + else if (verbose) + fformat (stdout, "PASS: %s\n", fmt); + vec_delete (test_vec, vec_len (test_vec), 0); + return ret; +} + +int +test_format_main (unformat_input_t * input) +{ + int ret = 0; + u8 *food = format (0, "food"); + + ret |= expectation ("foo", "foo"); + ret |= expectation ("foo", "%s", "foo"); + ret |= expectation ("9876", "%d", 9876); + ret |= expectation ("-9876", "%wd", (word) - 9876); + ret |= expectation ("98765432", "%u", 98765432); + ret |= expectation ("1200ffee", "%x", 0x1200ffee); + ret |= expectation ("BABEBABE", "%X", 0xbabebabe); + ret |= expectation ("10%a", "%d%%%c", 10, 'a'); + ret |= expectation ("123456789abcdef0", "%016Lx", 0x123456789abcdef0LL); + ret |= expectation ("00000123", "%08x", 0x123); + ret |= expectation (" 23 23 2.3037e1", + "%40U", format_test1, 23, 23.0367); + ret |= expectation ("left ", "%-10s", "left"); + ret |= expectation (" center ", "%=10s", "center"); + ret |= expectation (" right", "%+10s", "right"); + ret |= expectation ("123456", "%.0f", 123456.); + ret |= expectation ("1234567.0", "%.1f", 1234567.); + ret |= expectation ("foo", "%.*s", 3, "food"); + ret |= expectation ("food ", "%.*s", 10, "food "); + ret |= expectation ("(nil)", "%.*s", 3, (void *) 0); + ret |= expectation ("foo", "%.*v", 3, food); + ret |= expectation ("foobar", "%.*v%s", 3, food, "bar"); + ret |= expectation ("foo bar", "%S", "foo_bar"); + vec_free (food); + vec_free (test_vec); + return ret; +} + +typedef struct +{ + int a, b; +} foo_t; + +static u8 * +format_foo (u8 * s, va_list * va) +{ + foo_t *foo = va_arg (*va, foo_t *); + return format (s, "{a %d, b %d}", foo->a, foo->b); +} + +static uword +unformat_foo (unformat_input_t * i, va_list * va) +{ + foo_t *foo = va_arg (*va, foo_t *); + return unformat (i, "{%D,%D}", + sizeof (foo->a), &foo->a, sizeof (foo->b), &foo->b); +} + +int +test_unformat_main (unformat_input_t * input) +{ + u32 v[8]; + long l; + long long ll; + f64 f; + u8 *s; + foo_t foo = {.a = ~0,.b = ~0 }; + + v[0] = v[1] = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "01 %d %d", &v[0], &v[1])) + fformat (stdout, "got 01 %d %d\n", v[0], v[1]); + else if (unformat (input, "d %d", &v[0])) + fformat (stdout, "got it d %d\n", v[0]); + else if (unformat (input, "ld %ld", &l)) + fformat (stdout, "got it ld %ld\n", l); + else if (unformat (input, "lld %lld", &ll)) + fformat (stdout, "got it lld %lld\n", ll); + else if (unformat (input, "string %s", &s)) + fformat (stdout, "got string `%s'\n", s); + else if (unformat (input, "float %f", &f)) + fformat (stdout, "got float `%.4f'\n", f); + else if (unformat (input, "foo %U", unformat_foo, &foo)) + fformat (stdout, "got a foo `%U'\n", format_foo, &foo); + else if (unformat (input, "ignore-me1")) + fformat (stdout, "got an `ignore-me1'\n"); + else if (unformat (input, "ignore-me2")) + fformat (stdout, "got an `ignore-me2'\n"); + else if (unformat (input, "gi%d_%d@-", &v[0], &v[1])) + fformat (stdout, "got `gi%d_%d@-'\n", v[0], v[1]); + else if (unformat (input, "%_%d.%d.%d.%d%_->%_%d.%d.%d.%d%_", + &v[0], &v[1], &v[2], &v[3], + &v[4], &v[5], &v[6], &v[7])) + fformat (stdout, "got %d.%d.%d.%d -> %d.%d.%d.%d", + v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7]); + else + { + clib_warning ("unknown input `%U'\n", format_unformat_error, input); + return 1; + } + } + + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + + verbose = (argc > 1); + unformat_init_command_line (&i, argv); + + if (unformat (&i, "unformat")) + return test_unformat_main (&i); + else + return test_format_main (&i); +} +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_fpool.c b/src/vppinfra/test_fpool.c new file mode 100644 index 00000000..e2d67f16 --- /dev/null +++ b/src/vppinfra/test_fpool.c @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#include <vppinfra/pool.h> + +/* can be a very large size */ +#define NELTS 1024 + +int +main (int argc, char *argv[]) +{ + u32 *junk = 0; + int i; + u32 *tp = 0; + u32 *indices = 0; + + clib_mem_init (0, 3ULL << 30); + + vec_validate (indices, NELTS - 1); + _vec_len (indices) = 0; + + pool_init_fixed (tp, NELTS); + + for (i = 0; i < NELTS; i++) + { + pool_get (tp, junk); + vec_add1 (indices, junk - tp); + *junk = i; + } + + for (i = 0; i < NELTS; i++) + { + junk = pool_elt_at_index (tp, indices[i]); + ASSERT (*junk == i); + } + + fformat (stdout, "%d pool elts before deletes\n", pool_elts (tp)); + + pool_put_index (tp, indices[12]); + pool_put_index (tp, indices[43]); + + fformat (stdout, "%d pool elts after deletes\n", pool_elts (tp)); + + pool_validate (tp); + + pool_free (tp); + return 0; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_hash.c b/src/vppinfra/test_hash.c new file mode 100644 index 00000000..94110ab6 --- /dev/null +++ b/src/vppinfra/test_hash.c @@ -0,0 +1,458 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifdef CLIB_LINUX_KERNEL +#include <linux/unistd.h> +#endif + +#ifdef CLIB_UNIX +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <vppinfra/time.h> +#endif + +#include <vppinfra/random.h> +#include <vppinfra/mem.h> +#include <vppinfra/hash.h> +#include <vppinfra/error.h> +#include <vppinfra/format.h> +#include <vppinfra/bitmap.h> + +static int verbose; +#define if_verbose(format,args...) \ + if (verbose) { clib_warning(format, ## args); } + +typedef struct +{ + int n_iterations; + + int n_iterations_per_print; + + /* Number of pairs to insert into hash. */ + int n_pairs; + + /* True to validate correctness of hash functions. */ + int n_iterations_per_validate; + + /* Non-zero if hash table size is to be fixed. */ + int fixed_hash_size; + + /* Verbosity level for hash formats. */ + int verbose; + + /* Random number seed. */ + u32 seed; +} hash_test_t; + +static clib_error_t * +hash_next_test (word * h) +{ + hash_next_t hn = { 0 }; + hash_pair_t *p0, *p1; + clib_error_t *error = 0; + + /* *INDENT-OFF* */ + hash_foreach_pair (p0, h, { + p1 = hash_next (h, &hn); + error = CLIB_ERROR_ASSERT (p0 == p1); + if (error) + break; + }); + /* *INDENT-ON* */ + + if (!error) + error = CLIB_ERROR_ASSERT (!hash_next (h, &hn)); + + return error; +} + +static u8 * +test1_format (u8 * s, va_list * args) +{ + void *CLIB_UNUSED (user_arg) = va_arg (*args, void *); + void *v = va_arg (*args, void *); + hash_pair_t *p = va_arg (*args, hash_pair_t *); + hash_t *h = hash_header (v); + + return format (s, "0x%8U -> 0x%8U", + format_hex_bytes, &p->key, sizeof (p->key), + format_hex_bytes, &p->value[0], hash_value_bytes (h)); +} + +static clib_error_t * +test_word_key (hash_test_t * ht) +{ + word *h = 0; + word i, j; + + word *keys = 0, *vals = 0; + uword *is_inserted = 0; + + clib_error_t *error = 0; + + vec_resize (keys, ht->n_pairs); + vec_resize (vals, vec_len (keys)); + + h = hash_create (ht->fixed_hash_size, sizeof (vals[0])); + + hash_set_pair_format (h, test1_format, 0); + if (ht->fixed_hash_size) + hash_set_flags (h, HASH_FLAG_NO_AUTO_GROW | HASH_FLAG_NO_AUTO_SHRINK); + + { + uword *unique = 0; + u32 k; + + for (i = 0; i < vec_len (keys); i++) + { + do + { + k = random_u32 (&ht->seed) & 0xfffff; + } + while (clib_bitmap_get (unique, k)); + unique = clib_bitmap_ori (unique, k); + keys[i] = k; + vals[i] = i; + } + + clib_bitmap_free (unique); + } + + for (i = 0; i < ht->n_iterations; i++) + { + u32 vi = random_u32 (&ht->seed) % vec_len (keys); + + if (clib_bitmap_get (is_inserted, vi)) + hash_unset (h, keys[vi]); + else + hash_set (h, keys[vi], vals[vi]); + + is_inserted = clib_bitmap_xori (is_inserted, vi); + + if (ht->n_iterations_per_print > 0 + && ((i + 1) % ht->n_iterations_per_print) == 0) + if_verbose ("iteration %d\n %U", i + 1, format_hash, h, ht->verbose); + + if (ht->n_iterations_per_validate == 0 + || (i + 1) % ht->n_iterations_per_validate) + continue; + + { + hash_pair_t *p; + uword ki; + + /* *INDENT-OFF* */ + hash_foreach_pair (p, h, { + ki = p->value[0]; + ASSERT (keys[ki] == p->key); + }); + /* *INDENT-ON* */ + } + + clib_mem_validate (); + + if ((error = hash_validate (h))) + goto done; + + for (j = 0; j < vec_len (keys); j++) + { + uword *v; + v = hash_get (h, keys[j]); + if ((error = + CLIB_ERROR_ASSERT (clib_bitmap_get (is_inserted, j) == + (v != 0)))) + goto done; + if (v) + { + if ((error = CLIB_ERROR_ASSERT (v[0] == vals[j]))) + goto done; + } + } + } + + if ((error = hash_next_test (h))) + goto done; + + if_verbose ("%U", format_hash, h, ht->verbose); + + for (i = 0; i < vec_len (keys); i++) + { + if (!clib_bitmap_get (is_inserted, i)) + continue; + + hash_unset (h, keys[i]); + is_inserted = clib_bitmap_xori (is_inserted, i); + + if (ht->n_iterations_per_validate == 0 + || (i + 1) % ht->n_iterations_per_validate) + continue; + + clib_mem_validate (); + + if ((error = hash_validate (h))) + goto done; + + for (j = 0; j < vec_len (keys); j++) + { + uword *v; + v = hash_get (h, keys[j]); + if ((error = + CLIB_ERROR_ASSERT (clib_bitmap_get (is_inserted, j) == + (v != 0)))) + goto done; + if (v) + { + if ((error = CLIB_ERROR_ASSERT (v[0] == vals[j]))) + goto done; + } + } + } + +done: + hash_free (h); + vec_free (keys); + vec_free (vals); + clib_bitmap_free (is_inserted); + + if (verbose) + fformat (stderr, "%U\n", format_clib_mem_usage, /* verbose */ 0); + + return error; +} + +static u8 * +test2_format (u8 * s, va_list * args) +{ + void *CLIB_UNUSED (user_arg) = va_arg (*args, void *); + void *v = va_arg (*args, void *); + hash_pair_t *p = va_arg (*args, hash_pair_t *); + hash_t *h = hash_header (v); + + return format (s, "0x%8U <- %v", + format_hex_bytes, &p->value[0], hash_value_bytes (h), + p->key); +} + +static clib_error_t * +test_string_key (hash_test_t * ht) +{ + word i, j; + + u8 **keys = 0; + word *vals = 0; + uword *is_inserted = 0; + + word *h = 0; + + clib_error_t *error = 0; + + vec_resize (keys, ht->n_pairs); + vec_resize (vals, vec_len (keys)); + + h = + hash_create_vec (ht->fixed_hash_size, sizeof (keys[0][0]), + sizeof (uword)); + hash_set_pair_format (h, test2_format, 0); + if (ht->fixed_hash_size) + hash_set_flags (h, HASH_FLAG_NO_AUTO_SHRINK | HASH_FLAG_NO_AUTO_GROW); + + for (i = 0; i < vec_len (keys); i++) + { + keys[i] = random_string (&ht->seed, 5 + (random_u32 (&ht->seed) & 0xf)); + keys[i] = format (keys[i], "%x", i); + vals[i] = random_u32 (&ht->seed); + } + + for (i = 0; i < ht->n_iterations; i++) + { + u32 vi = random_u32 (&ht->seed) % vec_len (keys); + + if (clib_bitmap_get (is_inserted, vi)) + hash_unset_mem (h, keys[vi]); + else + hash_set_mem (h, keys[vi], vals[vi]); + + is_inserted = clib_bitmap_xori (is_inserted, vi); + + if (ht->n_iterations_per_print > 0 + && ((i + 1) % ht->n_iterations_per_print) == 0) + if_verbose ("iteration %d\n %U", i + 1, format_hash, h, ht->verbose); + + if (ht->n_iterations_per_validate == 0 + || (i + 1) % ht->n_iterations_per_validate) + continue; + + clib_mem_validate (); + + if ((error = hash_validate (h))) + goto done; + + for (j = 0; j < vec_len (keys); j++) + { + uword *v; + v = hash_get_mem (h, keys[j]); + if ((error = + CLIB_ERROR_ASSERT (clib_bitmap_get (is_inserted, j) == + (v != 0)))) + goto done; + if (v) + { + if ((error = CLIB_ERROR_ASSERT (v[0] == vals[j]))) + goto done; + } + } + } + + if ((error = hash_next_test (h))) + goto done; + + if_verbose ("%U", format_hash, h, ht->verbose); + + for (i = 0; i < vec_len (keys); i++) + { + if (!clib_bitmap_get (is_inserted, i)) + continue; + + hash_unset_mem (h, keys[i]); + is_inserted = clib_bitmap_xori (is_inserted, i); + + if (ht->n_iterations_per_validate == 0 + || (i + 1) % ht->n_iterations_per_validate) + continue; + + clib_mem_validate (); + + if ((error = hash_validate (h))) + goto done; + + for (j = 0; j < vec_len (keys); j++) + { + uword *v; + v = hash_get_mem (h, keys[j]); + if ((error = + CLIB_ERROR_ASSERT (clib_bitmap_get (is_inserted, j) == + (v != 0)))) + goto done; + if (v) + { + if ((error = CLIB_ERROR_ASSERT (v[0] == vals[j]))) + goto done; + } + } + } + +done: + hash_free (h); + vec_free (vals); + clib_bitmap_free (is_inserted); + + for (i = 0; i < vec_len (keys); i++) + vec_free (keys[i]); + vec_free (keys); + + if (verbose) + fformat (stderr, "%U\n", format_clib_mem_usage, /* verbose */ 0); + + return error; +} + +int +test_hash_main (unformat_input_t * input) +{ + hash_test_t _ht = { 0 }, *ht = &_ht; + clib_error_t *error; + + ht->n_iterations = 100; + ht->n_pairs = 10; + ht->fixed_hash_size = 0; /* zero means non-fixed size */ + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (0 == unformat (input, "iter %d", &ht->n_iterations) + && 0 == unformat (input, "print %d", &ht->n_iterations_per_print) + && 0 == unformat (input, "elts %d", &ht->n_pairs) + && 0 == unformat (input, "size %d", &ht->fixed_hash_size) + && 0 == unformat (input, "seed %d", &ht->seed) + && 0 == unformat (input, "verbose %=", &ht->verbose, 1) + && 0 == unformat (input, "valid %d", + &ht->n_iterations_per_validate)) + { + clib_warning ("unknown input `%U'", format_unformat_error, input); + return 1; + } + } + + if (!ht->seed) + ht->seed = random_default_seed (); + + if_verbose ("testing %d iterations, seed %d", ht->n_iterations, ht->seed); + + error = test_word_key (ht); + if (error) + clib_error_report (error); + + error = test_string_key (ht); + if (error) + clib_error_report (error); + + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + verbose = (argc > 1); + unformat_init_command_line (&i, argv); + ret = test_hash_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_heap.c b/src/vppinfra/test_heap.c new file mode 100644 index 00000000..3d5171bf --- /dev/null +++ b/src/vppinfra/test_heap.c @@ -0,0 +1,198 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <unistd.h> +#include <stdlib.h> + +#include <vppinfra/mem.h> +#include <vppinfra/heap.h> +#include <vppinfra/format.h> + +static int verbose; +#define if_verbose(format,args...) \ + if (verbose) { clib_warning(format, ## args); } + +int +main (int argc, char *argv[]) +{ + word i, j, k, n, check_mask; + u32 seed; + u32 *h = 0; + uword *objects = 0; + uword *handles = 0; + uword objects_used; + uword align, fixed_size; + + n = 10; + seed = (u32) getpid (); + check_mask = 0; + fixed_size = 0; + + if (argc > 1) + { + n = atoi (argv[1]); + verbose = 1; + } + if (argc > 2) + { + word i = atoi (argv[2]); + if (i) + seed = i; + } + if (argc > 3) + check_mask = atoi (argv[3]); + + align = 0; + if (argc > 4) + align = 1 << atoi (argv[4]); + + if_verbose ("testing %wd iterations seed %wd\n", n, seed); + + if (verbose) + fformat (stderr, "%U\n", format_clib_mem_usage, /* verbose */ 0); + + vec_resize (objects, 1000); + if (vec_bytes (objects)) /* stupid warning be gone */ + memset (objects, ~0, vec_bytes (objects)); + vec_resize (handles, vec_len (objects)); + + objects_used = 0; + + if (fixed_size) + { + uword max_len = 1024 * 1024; + void *memory = clib_mem_alloc (max_len * sizeof (h[0])); + h = heap_create_from_memory (memory, max_len, sizeof (h[0])); + } + + for (i = 0; i < n; i++) + { + while (1) + { + j = random_u32 (&seed) % vec_len (objects); + if (objects[j] != ~0 || i + objects_used < n) + break; + } + + if (objects[j] != ~0) + { + heap_dealloc (h, handles[j]); + objects_used--; + objects[j] = ~0; + } + else + { + u32 *data; + uword size; + + size = 1 + (random_u32 (&seed) % 100); + objects[j] = heap_alloc_aligned (h, size, align, handles[j]); + objects_used++; + + if (align) + ASSERT (0 == (objects[j] & (align - 1))); + ASSERT (objects[j] < vec_len (h)); + ASSERT (size <= heap_len (h, handles[j])); + + /* Set newly allocated object with test data. */ + if (check_mask & 2) + { + data = h + objects[j]; + + for (k = 0; k < size; k++) + data[k] = objects[j] + k; + } + } + + if (check_mask & 1) + heap_validate (h); + + if (check_mask & 4) + { + /* Duplicate heap at each iteration. */ + u32 *h1 = heap_dup (h); + heap_free (h); + h = h1; + } + + /* Verify that all used objects have correct test data. */ + if (check_mask & 2) + { + for (j = 0; j < vec_len (objects); j++) + if (objects[j] != ~0) + { + u32 *data = h + objects[j]; + for (k = 0; k < heap_len (h, handles[j]); k++) + ASSERT (data[k] == objects[j] + k); + } + } + } + + if (verbose) + fformat (stderr, "%U\n", format_heap, h, 1); + + { + u32 *h1 = heap_dup (h); + if (verbose) + fformat (stderr, "%U\n", format_heap, h1, 1); + heap_free (h1); + } + + heap_free (h); + if (verbose) + fformat (stderr, "%U\n", format_heap, h, 1); + ASSERT (objects_used == 0); + + vec_free (objects); + vec_free (handles); + + if (fixed_size) + vec_free_h (h, sizeof (heap_header_t)); + + if (verbose) + fformat (stderr, "%U\n", format_clib_mem_usage, /* verbose */ 0); + + return 0; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_longjmp.c b/src/vppinfra/test_longjmp.c new file mode 100644 index 00000000..2415c4f0 --- /dev/null +++ b/src/vppinfra/test_longjmp.c @@ -0,0 +1,129 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/clib.h> +#include <vppinfra/longjmp.h> +#include <vppinfra/format.h> + +static void test_calljmp (unformat_input_t * input); + +static int i; + +static int verbose; +#define if_verbose(format,args...) \ + if (verbose) { clib_warning(format, ## args); } + +static never_inline void +f2 (clib_longjmp_t * env) +{ + i++; + clib_longjmp (env, 1); +} + +static never_inline void +f1 (clib_longjmp_t * env) +{ + i++; + f2 (env); +} + +int +test_longjmp_main (unformat_input_t * input) +{ + clib_longjmp_t env; + + i = 0; + if (clib_setjmp (&env, 0) == 0) + { + if_verbose ("calling long jumper %d", i); + f1 (&env); + } + if_verbose ("back from long jump %d", i); + + test_calljmp (input); + + return 0; +} + +static uword +f3 (uword arg) +{ + uword i, j, array[10]; + + for (i = 0; i < ARRAY_LEN (array); i++) + array[i] = arg + i; + + j = 0; + for (i = 0; i < ARRAY_LEN (array); i++) + j ^= array[i]; + + return j; +} + +static void +test_calljmp (unformat_input_t * input) +{ + static u8 stack[32 * 1024] __attribute__ ((aligned (16))); + uword v; + + v = clib_calljmp (f3, 0, stack + sizeof (stack)); + ASSERT (v == f3 (0)); + if_verbose ("calljump ok"); +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int res; + + verbose = (argc > 1); + unformat_init_command_line (&i, argv); + res = test_longjmp_main (&i); + unformat_free (&i); + return res; +} +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_macros.c b/src/vppinfra/test_macros.c new file mode 100644 index 00000000..de8f2c49 --- /dev/null +++ b/src/vppinfra/test_macros.c @@ -0,0 +1,64 @@ +/* + Copyright (c) 2014 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#include <vppinfra/macros.h> + +macro_main_t macro_main; + +int +test_macros_main (unformat_input_t * input) +{ + macro_main_t *mm = ¯o_main; + + clib_macro_init (mm); + + fformat (stdout, "hostname: %s\n", + clib_macro_eval_dollar (mm, "hostname", 1 /* complain */ )); + + clib_macro_set_value (mm, "foo", "this is foo which contains $(bar)"); + clib_macro_set_value (mm, "bar", "bar"); + + fformat (stdout, "evaluate: %s\n", + clib_macro_eval (mm, "returns '$(foo)'", 1 /* complain */ )); + + clib_macro_free (mm); + + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + unformat_init_command_line (&i, argv); + ret = test_macros_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_md5.c b/src/vppinfra/test_md5.c new file mode 100644 index 00000000..4be6f964 --- /dev/null +++ b/src/vppinfra/test_md5.c @@ -0,0 +1,141 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2004 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/vec.h> +#include <vppinfra/format.h> +#include <vppinfra/error.h> +#include <vppinfra/md5.h> + +#include <fcntl.h> +#include <unistd.h> + +static clib_error_t *md5_test_suite (void); + +int +main (int argc, char *argv[]) +{ + int i; + + if (argc == 1) + { + clib_error_t *e; + e = md5_test_suite (); + if (e) + { + clib_error_report (e); + exit (1); + } + } + + for (i = 1; i < argc; i++) + { + md5_context_t m; + u8 digest[16]; + u8 buffer[64 * 1024]; + int fd, n; + + fd = open (argv[i], 0); + if (fd < 0) + clib_unix_error ("can't open %s", argv[i]); + + md5_init (&m); + while ((n = read (fd, buffer, sizeof (buffer))) > 0) + md5_add (&m, buffer, n); + close (fd); + md5_finish (&m, digest); + fformat (stdout, "%U %s\n", + format_hex_bytes, digest, sizeof (digest), argv[i]); + } + + return 0; +} + +static clib_error_t * +md5_test_suite (void) +{ + typedef struct + { + char *input; + char *output; + } md5_test_t; + + static md5_test_t tests[] = { + {.input = "", + .output = "d41d8cd98f00b204e9800998ecf8427e",}, + {.input = "a", + .output = "0cc175b9c0f1b6a831c399e269772661",}, + {.input = "abc", + .output = "900150983cd24fb0d6963f7d28e17f72",}, + {.input = "message digest", + .output = "f96b697d7cb7938d525a2f31aaf161d0",}, + {.input = "abcdefghijklmnopqrstuvwxyz", + .output = "c3fcd3d76192e4007dfb496cca67e13b",}, + {.input = + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", + .output = "d174ab98d277d9f5a5611c2c9f419d9f",}, + {.input = + "12345678901234567890123456789012345678901234567890123456789012345678901234567890", + .output = "57edf4a22be3c955ac49da2e2107b67a",}, + }; + + int i; + u8 *s; + md5_context_t m; + u8 digest[16]; + + for (i = 0; i < ARRAY_LEN (tests); i++) + { + md5_init (&m); + md5_add (&m, tests[i].input, strlen (tests[i].input)); + md5_finish (&m, digest); + s = format (0, "%U", format_hex_bytes, digest, sizeof (digest)); + if (memcmp (s, tests[i].output, 2 * sizeof (digest))) + return clib_error_return + (0, "%s -> %v expected %s", tests[i].input, s, tests[i].output); + vec_free (s); + } + + return 0; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_mheap.c b/src/vppinfra/test_mheap.c new file mode 100644 index 00000000..6bc36b89 --- /dev/null +++ b/src/vppinfra/test_mheap.c @@ -0,0 +1,242 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifdef CLIB_LINUX_KERNEL +#include <linux/unistd.h> +#endif + +#ifdef CLIB_UNIX +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> /* scanf */ +#endif + +#include <vppinfra/mheap.h> +#include <vppinfra/format.h> +#include <vppinfra/random.h> + +static int verbose = 0; +#define if_verbose(format,args...) \ + if (verbose) { clib_warning(format, ## args); } + +int +test_mheap_main (unformat_input_t * input) +{ + int i, j, k, n_iterations; + void *h, *h_mem; + uword *objects = 0; + u32 objects_used, really_verbose, n_objects, max_object_size; + u32 check_mask, seed, trace, use_vm; + u32 print_every = 0; + u32 *data; + mheap_t *mh; + + /* Validation flags. */ + check_mask = 0; +#define CHECK_VALIDITY 1 +#define CHECK_DATA 2 +#define CHECK_ALIGN 4 + + n_iterations = 10; + seed = 0; + max_object_size = 100; + n_objects = 1000; + trace = 0; + really_verbose = 0; + use_vm = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (0 == unformat (input, "iter %d", &n_iterations) + && 0 == unformat (input, "count %d", &n_objects) + && 0 == unformat (input, "size %d", &max_object_size) + && 0 == unformat (input, "seed %d", &seed) + && 0 == unformat (input, "print %d", &print_every) + && 0 == unformat (input, "validdata %|", + &check_mask, CHECK_DATA | CHECK_VALIDITY) + && 0 == unformat (input, "valid %|", + &check_mask, CHECK_VALIDITY) + && 0 == unformat (input, "verbose %=", &really_verbose, 1) + && 0 == unformat (input, "trace %=", &trace, 1) + && 0 == unformat (input, "vm %=", &use_vm, 1) + && 0 == unformat (input, "align %|", &check_mask, CHECK_ALIGN)) + { + clib_warning ("unknown input `%U'", format_unformat_error, input); + return 1; + } + } + + /* Zero seed means use default. */ + if (!seed) + seed = random_default_seed (); + + if_verbose + ("testing %d iterations, %d %saligned objects, max. size %d, seed %d", + n_iterations, n_objects, (check_mask & CHECK_ALIGN) ? "randomly " : "un", + max_object_size, seed); + + vec_resize (objects, n_objects); + if (vec_bytes (objects)) /* stupid warning be gone */ + memset (objects, ~0, vec_bytes (objects)); + objects_used = 0; + + /* Allocate initial heap. */ + { + uword size = + max_pow2 (2 * n_objects * max_object_size * sizeof (data[0])); + + h_mem = clib_mem_alloc (size); + if (!h_mem) + return 0; + + h = mheap_alloc (h_mem, size); + } + + if (trace) + mheap_trace (h, trace); + + mh = mheap_header (h); + + if (use_vm) + mh->flags &= ~MHEAP_FLAG_DISABLE_VM; + else + mh->flags |= MHEAP_FLAG_DISABLE_VM; + + if (check_mask & CHECK_VALIDITY) + mh->flags |= MHEAP_FLAG_VALIDATE; + + for (i = 0; i < n_iterations; i++) + { + while (1) + { + j = random_u32 (&seed) % vec_len (objects); + if (objects[j] != ~0 || i + objects_used < n_iterations) + break; + } + + if (objects[j] != ~0) + { + mheap_put (h, objects[j]); + objects_used--; + objects[j] = ~0; + } + else + { + uword size, align, align_offset; + + size = (random_u32 (&seed) % max_object_size) * sizeof (data[0]); + align = align_offset = 0; + if (check_mask & CHECK_ALIGN) + { + align = 1 << (random_u32 (&seed) % 10); + align_offset = round_pow2 (random_u32 (&seed) & (align - 1), + sizeof (u32)); + } + + h = mheap_get_aligned (h, size, align, align_offset, &objects[j]); + + if (align > 0) + ASSERT (0 == ((objects[j] + align_offset) & (align - 1))); + + ASSERT (objects[j] != ~0); + objects_used++; + + /* Set newly allocated object with test data. */ + if (check_mask & CHECK_DATA) + { + uword len; + + data = (void *) h + objects[j]; + len = mheap_len (h, data); + + ASSERT (size <= mheap_data_bytes (h, objects[j])); + + data[0] = len; + for (k = 1; k < len; k++) + data[k] = objects[j] + k; + } + } + + /* Verify that all used objects have correct test data. */ + if (check_mask & 2) + { + for (j = 0; j < vec_len (objects); j++) + if (objects[j] != ~0) + { + u32 *data = h + objects[j]; + uword len = data[0]; + for (k = 1; k < len; k++) + ASSERT (data[k] == objects[j] + k); + } + } + if (print_every != 0 && i > 0 && (i % print_every) == 0) + fformat (stderr, "iteration %d: %U\n", i, format_mheap, h, + really_verbose); + } + + if (verbose) + fformat (stderr, "%U\n", format_mheap, h, really_verbose); + mheap_free (h); + clib_mem_free (h_mem); + vec_free (objects); + + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + verbose = (argc > 1); + unformat_init_command_line (&i, argv); + ret = test_mheap_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_pfhash.c b/src/vppinfra/test_pfhash.c new file mode 100644 index 00000000..ddbdbb34 --- /dev/null +++ b/src/vppinfra/test_pfhash.c @@ -0,0 +1,322 @@ +/* + Copyright (c) 2013 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#include <vppinfra/pfhash.h> +#include <vppinfra/format.h> +#include <vppinfra/random.h> + +#if defined(CLIB_HAVE_VEC128) && ! defined (__ALTIVEC__) + +int verbose = 0; + +always_inline u8 * +random_aligned_string (u32 * seed, uword len) +{ + u8 *alphabet = (u8 *) "abcdefghijklmnopqrstuvwxyz"; + u8 *s = 0; + word i; + + vec_resize_aligned (s, len, 16); + for (i = 0; i < len; i++) + s[i] = alphabet[random_u32 (seed) % 26]; + + return s; +} + +void exit (int); + +int +test_pfhash_main (unformat_input_t * input) +{ + u32 seed = 0xdeaddabe; + int i, iter; + u32 nkeys = 4; + u32 niter = 1; + u32 nbuckets = 1; + u32 bucket; + u32 sizes[3] = { 16, 8, 4 }, this_size, size; + u8 **keys = 0; + pfhash_t _rec, *p = &_rec; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "seed %d", &seed)) + ; + else if (unformat (input, "niter %d", &niter)) + ; + else if (unformat (input, "nkeys %d", &nkeys)) + ; + else if (unformat (input, "nbuckets %d", &nbuckets)) + ; + else if (unformat (input, "verbose %d", &verbose)) + ; + else if (unformat (input, "verbose")) + verbose = 1; + else + clib_error ("unknown input `%U'", format_unformat_error, input); + } + + vec_validate (keys, nkeys - 1); + + for (i = 0; i < nkeys; i++) + { + int j, k; + + again: + keys[i] = random_aligned_string (&seed, 16); + for (j = 0; j < (i - 1); j++) + { + /* Make sure we don't have a dup key in the min key size */ + for (k = 0; k < 4; k++) + { + if (keys[i][k] != keys[j][k]) + goto check_next_key; + } + vec_free (keys[i]); + goto again; + check_next_key: + ; + } + } + + /* test 8 byte key, 8 byte value case separately */ + + for (size = 8; size < 9; size++) + { + this_size = 8; + + fformat (stdout, "%d-byte key 8 byte value test\n", this_size); + + pfhash_init (p, "test", 8 /* key size */ , 8 /* value size */ , + nbuckets + 1); + + for (iter = 0; iter < niter; iter++) + { + bucket = 0; + for (i = 0; i < nkeys; i++) + { + bucket = (i % nbuckets) + 1; + pfhash_set (p, bucket, keys[i], + (void *) (u64) 0x100000000ULL + i + 1); + } + + for (i = 0; i < nkeys; i++) + { + bucket = (i % nbuckets) + 1; + if (pfhash_get (p, bucket, keys[i]) + != (u64) 0x100000000ULL + i + 1) + { + clib_warning ("key %d bucket %d lookup FAIL\n", i, bucket); + (void) pfhash_get (p, bucket, keys[i]); + } + } + + /* test inline functions */ + for (i = 0; i < nkeys; i++) + { + u32 bucket_contents; + u64 value = 0xdeadbeef; + bucket = (i % nbuckets) + 1; + + pfhash_prefetch_bucket (p, bucket); + bucket_contents = pfhash_read_bucket_prefetch_kv (p, bucket); + + value = pfhash_search_kv_8v8 (p, bucket_contents, + (u64 *) keys[i]); + if (value != (u64) 0x100000000ULL + i + 1) + clib_warning ("key %d bucket %d lookup FAIL\n", i, bucket); + } + + if (verbose) + fformat (stdout, "%U\n", format_pfhash, p, verbose > 1); + + for (i = 0; i < nkeys; i++) + { + bucket = (i % nbuckets) + 1; + pfhash_unset (p, bucket, keys[i]); + } + + for (i = 0; i < nkeys; i++) + { + bucket = (i % nbuckets) + 1; + if (pfhash_get (p, bucket, keys[i]) != (u64) ~ 0) + { + clib_warning ("key %d bucket %d lookup FAIL\n", i, bucket); + (void) pfhash_get (p, bucket, keys[i]); + } + } + /* test inline functions */ + for (i = 0; i < nkeys; i++) + { + u32 bucket_contents; + u64 value = 0xdeadbeef; + bucket = (i % nbuckets) + 1; + + pfhash_prefetch_bucket (p, bucket); + bucket_contents = pfhash_read_bucket_prefetch_kv (p, bucket); + + value = pfhash_search_kv_8v8 (p, bucket_contents, + (u64 *) keys[i]); + + if (value != (u64) ~ 0) + clib_warning ("key %d bucket %d lookup FAIL\n", i, bucket); + } + } + pfhash_free (p); + } + + /* test other cases */ + + for (size = 0; size < ARRAY_LEN (sizes); size++) + { + this_size = sizes[size]; + + fformat (stdout, "%d-byte key test\n", this_size); + + pfhash_init (p, "test", this_size, 4 /* value size */ , nbuckets + 1); + + for (iter = 0; iter < niter; iter++) + { + bucket = 0; + for (i = 0; i < nkeys; i++) + { + bucket = (i % nbuckets) + 1; + pfhash_set (p, bucket, keys[i], (void *) (u64) i + 1); + } + + for (i = 0; i < nkeys; i++) + { + bucket = (i % nbuckets) + 1; + if (pfhash_get (p, bucket, keys[i]) != i + 1) + { + clib_warning ("key %d bucket %d lookup FAIL\n", i, bucket); + (void) pfhash_get (p, bucket, keys[i]); + } + } + + /* test inline functions */ + for (i = 0; i < nkeys; i++) + { + u32 bucket_contents; + u32 value = 0xdeadbeef; + bucket = (i % nbuckets) + 1; + + pfhash_prefetch_bucket (p, bucket); + bucket_contents = pfhash_read_bucket_prefetch_kv (p, bucket); + switch (p->key_size) + { + case 16: + value = + pfhash_search_kv_16 (p, bucket_contents, + (u32x4 *) keys[i]); + break; + case 8: + value = + pfhash_search_kv_8 (p, bucket_contents, (u64 *) keys[i]); + break; + case 4: + value = + pfhash_search_kv_4 (p, bucket_contents, (u32 *) keys[i]); + break; + } + + if (value != (i + 1)) + clib_warning ("key %d bucket %d lookup FAIL\n", i, bucket); + } + + if (verbose) + fformat (stdout, "%U\n", format_pfhash, p, verbose > 1); + + for (i = 0; i < nkeys; i++) + { + bucket = (i % nbuckets) + 1; + pfhash_unset (p, bucket, keys[i]); + } + + for (i = 0; i < nkeys; i++) + { + bucket = (i % nbuckets) + 1; + if (pfhash_get (p, bucket, keys[i]) != (u64) ~ 0) + { + clib_warning ("key %d bucket %d lookup FAIL\n", i, bucket); + (void) pfhash_get (p, bucket, keys[i]); + } + } + /* test inline functions */ + for (i = 0; i < nkeys; i++) + { + u32 bucket_contents; + u32 value = 0xdeadbeef; + bucket = (i % nbuckets) + 1; + + pfhash_prefetch_bucket (p, bucket); + bucket_contents = pfhash_read_bucket_prefetch_kv (p, bucket); + switch (p->key_size) + { + case 16: + value = + pfhash_search_kv_16 (p, bucket_contents, + (u32x4 *) keys[i]); + break; + case 8: + value = + pfhash_search_kv_8 (p, bucket_contents, (u64 *) keys[i]); + break; + case 4: + value = + pfhash_search_kv_4 (p, bucket_contents, (u32 *) keys[i]); + break; + } + if (value != (u32) ~ 0) + clib_warning ("key %d bucket %d lookup FAIL\n", i, bucket); + } + } + pfhash_free (p); + } + + exit (0); +} +#else +int +test_pfhash_main (unformat_input_t * input) +{ + clib_warning ("MMX unit not available"); + return 0; +} +#endif + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + unformat_init_command_line (&i, argv); + ret = test_pfhash_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_phash.c b/src/vppinfra/test_phash.c new file mode 100644 index 00000000..9ed2ac7b --- /dev/null +++ b/src/vppinfra/test_phash.c @@ -0,0 +1,149 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/phash.h> +#include <vppinfra/format.h> +#include <vppinfra/random.h> + +static int verbose; +#define if_verbose(format,args...) \ + if (verbose) { clib_warning(format, ## args); } + +int +test_phash_main (unformat_input_t * input) +{ + phash_main_t _pm = { 0 }, *pm = &_pm; + int n_keys, random_keys; + u32 seed; + clib_error_t *error; + + random_keys = 1; + n_keys = 1000; + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (0 == unformat (input, "keys %d", &n_keys) + && 0 == unformat (input, "verbose %=", &verbose, 1) + && 0 == unformat (input, "random-keys %=", &random_keys, 1) + && 0 == unformat (input, "sequential-keys %=", &random_keys, 0) + && 0 == unformat (input, "seed %d", &pm->random_seed) + && 0 == unformat (input, "64-bit %|", &pm->flags, PHASH_FLAG_MIX64) + && 0 == unformat (input, "32-bit %|", &pm->flags, PHASH_FLAG_MIX32) + && 0 == unformat (input, "fast %|", &pm->flags, + PHASH_FLAG_FAST_MODE) + && 0 == unformat (input, "slow %|", &pm->flags, + PHASH_FLAG_SLOW_MODE) + && 0 == unformat (input, "minimal %|", &pm->flags, + PHASH_FLAG_MINIMAL) + && 0 == unformat (input, "non-minimal %|", &pm->flags, + PHASH_FLAG_NON_MINIMAL)) + clib_error ("unknown input `%U'", format_unformat_error, input); + } + + if (!pm->random_seed) + pm->random_seed = random_default_seed (); + + if_verbose + ("%d %d-bit keys, random seed %d, %s mode, looking for %sminimal hash", + n_keys, (pm->flags & PHASH_FLAG_MIX64) ? 64 : 32, pm->random_seed, + (pm->flags & PHASH_FLAG_FAST_MODE) ? "fast" : "slow", + (pm->flags & PHASH_FLAG_MINIMAL) ? "" : "non-"); + + seed = pm->random_seed; + + /* Initialize random keys. */ + { + phash_key_t *k; + + vec_resize (pm->keys, n_keys); + vec_foreach (k, pm->keys) + { + k->key = k - pm->keys; + if (random_keys) + { + if (pm->flags & PHASH_FLAG_MIX64) + k->key = random_u64 (&seed); + else + k->key = random_u32 (&seed); + } + } + } + + error = phash_find_perfect_hash (pm); + if (error) + { + clib_error_report (error); + return 1; + } + else + { + if_verbose ("(%d,%d) (a,b) bits, %d seeds tried, %d tree walks", + pm->a_bits, pm->b_bits, + pm->n_seed_trials, pm->n_perfect_calls); + + error = phash_validate (pm); + if (error) + { + clib_error_report (error); + return 1; + } + } + + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int res; + + verbose = (argc > 1); + unformat_init_command_line (&i, argv); + res = test_phash_main (&i); + unformat_free (&i); + return res; +} +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_pool.c b/src/vppinfra/test_pool.c new file mode 100644 index 00000000..67a5e50a --- /dev/null +++ b/src/vppinfra/test_pool.c @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/mem.h> +#include <vppinfra/pool.h> + +#ifdef __KERNEL__ +#include <linux/unistd.h> +#else +#include <unistd.h> +#endif + +int +main (int argc, char *argv[]) +{ + int i, n, seed; + + int *p = 0, *e, j, *o = 0; + + n = atoi (argv[1]); + seed = getpid (); + srandom (1); + + for (i = 0; i < n; i++) + { + if (vec_len (o) < 10 || (random () & 1)) + { + pool_get (p, e); + j = e - p; + *e = j; + vec_add1 (o, j); + } + else + { + j = random () % vec_len (o); + e = p + j; + pool_put (p, e); + vec_delete (o, 1, j); + } + } + p = pool_free (p); + vec_free (o); + return 0; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_pool_iterate.c b/src/vppinfra/test_pool_iterate.c new file mode 100644 index 00000000..27ce4bb3 --- /dev/null +++ b/src/vppinfra/test_pool_iterate.c @@ -0,0 +1,59 @@ +/* + Copyright (c) 2011 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#include <vppinfra/mem.h> +#include <vppinfra/pool.h> + +#ifdef __KERNEL__ +#include <linux/unistd.h> +#else +#include <unistd.h> +#endif + +int +main (int argc, char *argv[]) +{ + int i; + uword next; + u32 *tp = 0; + u32 *junk; + + for (i = 0; i < 70; i++) + pool_get (tp, junk); + + (void) junk; /* compiler warning */ + + pool_put_index (tp, 1); + pool_put_index (tp, 65); + + next = ~0; + do + { + next = pool_next_index (tp, next); + fformat (stdout, "next index %d\n", next); + } + while (next != ~0); + + return 0; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_ptclosure.c b/src/vppinfra/test_ptclosure.c new file mode 100644 index 00000000..be7d51df --- /dev/null +++ b/src/vppinfra/test_ptclosure.c @@ -0,0 +1,212 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vppinfra/ptclosure.h> +#include <vppinfra/hash.h> + +typedef struct +{ + uword *index_by_name; + u8 *items; +} test_main_t; + +test_main_t test_main; + +static char *items[] = { + "d", + "a", + "b", + "c", +}; + +char *constraints[] = { + "a,b", + "b,c", + "d,b", + // "c,a", /* no partial order possible */ +}; + +u32 +vl (void *p) +{ + return vec_len (p); +} + +static void +dump_closure (test_main_t * tm, char *s, u8 ** orig) +{ + int i, j; + + fformat (stdout, "--------- %s --------------\n", s); + for (i = 0; i < vec_len (orig); i++) + { + for (j = 0; j < vec_len (orig); j++) + if (orig[i][j]) + { + fformat (stdout, "%s <before> %s\n", items[i], items[j]); + } + } +} + +int +comma_split (u8 * s, u8 ** a, u8 ** b) +{ + *a = s; + + while (*s && *s != ',') + s++; + + if (*s == ',') + *s = 0; + else + return 1; + + *b = (u8 *) (s + 1); + return 0; +} + +int +test_ptclosure_main (unformat_input_t * input) +{ + test_main_t *tm = &test_main; + u8 *item_name; + int i, j; + u8 **orig; + u8 **closure; + u8 *a_name, *b_name; + int a_index, b_index; + uword *p; + u8 *this_constraint; + int n; + u32 *result = 0; + + tm->index_by_name = hash_create_string (0, sizeof (uword)); + + n = ARRAY_LEN (items); + + for (i = 0; i < n; i++) + { + item_name = (u8 *) items[i]; + hash_set_mem (tm->index_by_name, item_name, i); + } + + orig = clib_ptclosure_alloc (n); + + for (i = 0; i < ARRAY_LEN (constraints); i++) + { + this_constraint = format (0, "%s%c", constraints[i], 0); + + if (comma_split (this_constraint, &a_name, &b_name)) + { + clib_warning ("couldn't split '%s'", constraints[i]); + return 1; + } + + p = hash_get_mem (tm->index_by_name, a_name); + if (p == 0) + { + clib_warning ("couldn't find '%s'", a_name); + return 1; + } + a_index = p[0]; + + p = hash_get_mem (tm->index_by_name, b_name); + if (p == 0) + { + clib_warning ("couldn't find '%s'", b_name); + return 1; + } + b_index = p[0]; + + orig[a_index][b_index] = 1; + vec_free (this_constraint); + } + + dump_closure (tm, "original relation", orig); + + closure = clib_ptclosure (orig); + + dump_closure (tm, "closure", closure); + + /* + * Output partial order + */ + +again: + for (i = 0; i < n; i++) + { + for (j = 0; j < n; j++) + { + if (closure[i][j]) + goto item_constrained; + } + /* Item i can be output */ + vec_add1 (result, i); + { + int k; + for (k = 0; k < n; k++) + closure[k][i] = 0; + /* "Magic" a before a, to keep from ever outputting it again */ + closure[i][i] = 1; + goto again; + } + item_constrained: + ; + } + + if (vec_len (result) != n) + { + clib_warning ("no partial order exists"); + exit (1); + } + + fformat (stdout, "Partial order:\n"); + + for (i = vec_len (result) - 1; i >= 0; i--) + { + fformat (stdout, "%s\n", items[result[i]]); + } + + vec_free (result); + clib_ptclosure_free (orig); + clib_ptclosure_free (closure); + + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + clib_mem_init (0, 3ULL << 30); + + unformat_init_command_line (&i, argv); + ret = test_ptclosure_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_qhash.c b/src/vppinfra/test_qhash.c new file mode 100644 index 00000000..fdbf0bbe --- /dev/null +++ b/src/vppinfra/test_qhash.c @@ -0,0 +1,333 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vppinfra/bitmap.h> +#include <vppinfra/os.h> +#include <vppinfra/qhash.h> +#include <vppinfra/random.h> +#include <vppinfra/time.h> + +typedef struct +{ + u32 n_iter, seed, n_keys, n_hash_keys, verbose; + + u32 max_vector; + + uword *hash; + + uword *keys_in_hash_bitmap; + + u32 *qhash; + + uword *keys; + + uword *lookup_keys; + uword *lookup_key_indices; + u32 *lookup_results; + + u32 *get_multiple_results; + + clib_time_t time; + + f64 overflow_fraction, ave_elts; + f64 get_time, hash_get_time; + f64 set_time, set_count; + f64 unset_time, unset_count; + f64 hash_set_time, hash_unset_time; +} test_qhash_main_t; + +clib_error_t * +test_qhash_main (unformat_input_t * input) +{ + clib_error_t *error = 0; + test_qhash_main_t _tm, *tm = &_tm; + uword i, iter; + + memset (tm, 0, sizeof (tm[0])); + tm->n_iter = 10; + tm->seed = 1; + tm->n_keys = 10; + tm->max_vector = 1; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "iter %d", &tm->n_iter)) + ; + else if (unformat (input, "seed %d", &tm->seed)) + ; + else if (unformat (input, "keys %d", &tm->n_keys)) + ; + else if (unformat (input, "size %d", &tm->n_hash_keys)) + ; + else if (unformat (input, "vector %d", &tm->max_vector)) + ; + else if (unformat (input, "verbose")) + tm->verbose = 1; + else + { + error = clib_error_create ("unknown input `%U'\n", + format_unformat_error, input); + goto done; + } + } + + if (!tm->seed) + tm->seed = random_default_seed (); + + clib_time_init (&tm->time); + + clib_warning ("iter %d, seed %u, keys %d, max vector %d, ", + tm->n_iter, tm->seed, tm->n_keys, tm->max_vector); + + vec_resize (tm->keys, tm->n_keys); + vec_resize (tm->get_multiple_results, tm->n_keys); + for (i = 0; i < vec_len (tm->keys); i++) + tm->keys[i] = random_uword (&tm->seed); + + if (!tm->n_hash_keys) + tm->n_hash_keys = 2 * max_pow2 (tm->n_keys); + tm->n_hash_keys = clib_max (tm->n_keys, tm->n_hash_keys); + qhash_resize (tm->qhash, tm->n_hash_keys); + + { + qhash_t *h = qhash_header (tm->qhash); + int i; + for (i = 0; i < ARRAY_LEN (h->hash_seeds); i++) + h->hash_seeds[i] = random_uword (&tm->seed); + } + + vec_resize (tm->lookup_keys, tm->max_vector); + vec_resize (tm->lookup_key_indices, tm->max_vector); + vec_resize (tm->lookup_results, tm->max_vector); + + for (iter = 0; iter < tm->n_iter; iter++) + { + uword *p, j, n, is_set; + + n = tm->max_vector; + + is_set = random_u32 (&tm->seed) & 1; + is_set |= hash_elts (tm->hash) < (tm->n_keys / 4); + if (hash_elts (tm->hash) > (3 * tm->n_keys) / 4) + is_set = 0; + + _vec_len (tm->lookup_keys) = n; + _vec_len (tm->lookup_key_indices) = n; + j = 0; + while (j < n) + { + i = random_u32 (&tm->seed) % vec_len (tm->keys); + if (clib_bitmap_get (tm->keys_in_hash_bitmap, i) != is_set) + { + f64 t[2]; + tm->lookup_key_indices[j] = i; + tm->lookup_keys[j] = tm->keys[i]; + t[0] = clib_time_now (&tm->time); + if (is_set) + hash_set (tm->hash, tm->keys[i], i); + else + hash_unset (tm->hash, tm->keys[i]); + t[1] = clib_time_now (&tm->time); + if (is_set) + tm->hash_set_time += t[1] - t[0]; + else + tm->hash_unset_time += t[1] - t[0]; + tm->keys_in_hash_bitmap + = clib_bitmap_set (tm->keys_in_hash_bitmap, i, is_set); + j++; + } + } + + { + f64 t[2]; + + if (is_set) + { + t[0] = clib_time_now (&tm->time); + qhash_set_multiple (tm->qhash, + tm->lookup_keys, + vec_len (tm->lookup_keys), + tm->lookup_results); + t[1] = clib_time_now (&tm->time); + tm->set_time += t[1] - t[0]; + tm->set_count += vec_len (tm->lookup_keys); + for (i = 0; i < vec_len (tm->lookup_keys); i++) + { + uword r = tm->lookup_results[i]; + *vec_elt_at_index (tm->qhash, r) = tm->lookup_key_indices[i]; + } + } + else + { + t[0] = clib_time_now (&tm->time); + qhash_unset_multiple (tm->qhash, + tm->lookup_keys, + vec_len (tm->lookup_keys), + tm->lookup_results); + t[1] = clib_time_now (&tm->time); + tm->unset_time += t[1] - t[0]; + tm->unset_count += vec_len (tm->lookup_keys); + + for (i = 0; i < vec_len (tm->lookup_keys); i++) + { + uword r = tm->lookup_results[i]; + *vec_elt_at_index (tm->qhash, r) = ~0; + } + } + } + + if (qhash_elts (tm->qhash) != hash_elts (tm->hash)) + os_panic (); + + { + qhash_t *h; + uword i, k, l, count; + + h = qhash_header (tm->qhash); + + for (i = k = 0; k < vec_len (h->hash_key_valid_bitmap); k++) + i += count_set_bits (h->hash_key_valid_bitmap[k]); + k = hash_elts (h->overflow_hash); + l = qhash_elts (tm->qhash); + if (i + k != l) + os_panic (); + + count = hash_elts (h->overflow_hash); + for (i = 0; i < (1 << h->log2_hash_size); i++) + count += tm->qhash[i] != ~0; + if (count != qhash_elts (tm->qhash)) + os_panic (); + + { + u32 *tmp = 0; + + /* *INDENT-OFF* */ + hash_foreach (k, l, h->overflow_hash, ({ + j = qhash_hash_mix (h, k) / QHASH_KEYS_PER_BUCKET; + vec_validate (tmp, j); + tmp[j] += 1; + })); + /* *INDENT-ON* */ + + for (k = 0; k < vec_len (tmp); k++) + { + if (k >= vec_len (h->overflow_counts)) + os_panic (); + if (h->overflow_counts[k] != tmp[k]) + os_panic (); + } + for (; k < vec_len (h->overflow_counts); k++) + if (h->overflow_counts[k] != 0) + os_panic (); + + vec_free (tmp); + } + } + + { + f64 t[2]; + + t[0] = clib_time_now (&tm->time); + qhash_get_multiple (tm->qhash, tm->keys, vec_len (tm->keys), + tm->get_multiple_results); + t[1] = clib_time_now (&tm->time); + tm->get_time += t[1] - t[0]; + + for (i = 0; i < vec_len (tm->keys); i++) + { + u32 r; + + t[0] = clib_time_now (&tm->time); + p = hash_get (tm->hash, tm->keys[i]); + t[1] = clib_time_now (&tm->time); + tm->hash_get_time += t[1] - t[0]; + + r = qhash_get (tm->qhash, tm->keys[i]); + if (p) + { + if (p[0] != i) + os_panic (); + if (*vec_elt_at_index (tm->qhash, r) != i) + os_panic (); + } + else + { + if (r != ~0) + os_panic (); + } + if (r != tm->get_multiple_results[i]) + os_panic (); + } + } + + tm->overflow_fraction += + ((f64) qhash_n_overflow (tm->qhash) / qhash_elts (tm->qhash)); + tm->ave_elts += qhash_elts (tm->qhash); + } + + fformat (stderr, "%d iter %.6e overflow, %.4f ave. elts\n", + tm->n_iter, + tm->overflow_fraction / tm->n_iter, tm->ave_elts / tm->n_iter); + + tm->get_time /= tm->n_iter * vec_len (tm->keys); + tm->hash_get_time /= tm->n_iter * vec_len (tm->keys); + + tm->set_time /= tm->set_count; + tm->unset_time /= tm->unset_count; + tm->hash_set_time /= tm->set_count; + tm->hash_unset_time /= tm->unset_count; + + fformat (stderr, + "get/set/unset clocks %.2e %.2e %.2e clib %.2e %.2e %.2e ratio %.2f %.2f %.2f\n", + tm->get_time * tm->time.clocks_per_second, + tm->set_time * tm->time.clocks_per_second, + tm->unset_time * tm->time.clocks_per_second, + tm->hash_get_time * tm->time.clocks_per_second, + tm->hash_set_time * tm->time.clocks_per_second, + tm->hash_unset_time * tm->time.clocks_per_second, + tm->hash_get_time / tm->get_time, tm->hash_set_time / tm->set_time, + tm->hash_unset_time / tm->unset_time); + + +done: + return error; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + clib_error_t *error; + + unformat_init_command_line (&i, argv); + error = test_qhash_main (&i); + unformat_free (&i); + if (error) + { + clib_error_report (error); + return 1; + } + else + return 0; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_random.c b/src/vppinfra/test_random.c new file mode 100644 index 00000000..49759eac --- /dev/null +++ b/src/vppinfra/test_random.c @@ -0,0 +1,148 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/format.h> +#include <vppinfra/bitmap.h> + +static u32 known_random_sequence[] = { + 0x00000000, 0x3c6ef35f, 0x47502932, 0xd1ccf6e9, + 0xaaf95334, 0x6252e503, 0x9f2ec686, 0x57fe6c2d, + 0xa3d95fa8, 0x81fdbee7, 0x94f0af1a, 0xcbf633b1, +}; + + +int +test_random_main (unformat_input_t * input) +{ + uword n_iterations; + uword i, repeat_count; + uword *bitmap = 0; + uword print; + u32 seed; + u32 *seedp = &seed; + + /* first, check known sequence from Numerical Recipes in C, 2nd ed. + page 284 */ + seed = known_random_sequence[0]; + for (i = 0; i < ARRAY_LEN (known_random_sequence) - 1; i++) + { + u32 rv; + rv = random_u32 (seedp); + if (rv != known_random_sequence[i + 1]) + { + fformat (stderr, "known sequence check FAILS at index %d", i + 1); + break; + } + } + + clib_warning ("known sequence check passes"); + + n_iterations = 1000; + seed = 0; + print = 1 << 24; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (0 == unformat (input, "iter %d", &n_iterations) + && 0 == unformat (input, "print %d", &print) + && 0 == unformat (input, "seed %d", &seed)) + clib_error ("unknown input `%U'", format_unformat_error, input); + } + + if (!seed) + seed = random_default_seed (); + + if (n_iterations == 0) + n_iterations = random_u32_max (); + + clib_warning ("%d iterations, seed %d\n", n_iterations, seed); + + repeat_count = 0; + for (i = 0; i < n_iterations; i++) + { + uword r = random_u32 (&seed); + uword b, ri, rj; + + ri = r / BITS (bitmap[0]); + rj = (uword) 1 << (r % BITS (bitmap[0])); + + vec_validate (bitmap, ri); + b = bitmap[ri]; + + if (b & rj) + goto repeat; + b |= rj; + bitmap[ri] = b; + + if (0 == (i & (print - 1))) + fformat (stderr, "0x%08x iterations %d repeats\n", i, repeat_count); + continue; + + repeat: + fformat (stderr, "repeat found at iteration %d/%d\n", i, n_iterations); + repeat_count++; + continue; + } + + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + clib_mem_init (0, 3ULL << 30); + + unformat_init_command_line (&i, argv); + ret = test_random_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_random_isaac.c b/src/vppinfra/test_random_isaac.c new file mode 100644 index 00000000..337d30dd --- /dev/null +++ b/src/vppinfra/test_random_isaac.c @@ -0,0 +1,142 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/format.h> +#include <vppinfra/hash.h> +#include <vppinfra/random.h> +#include <vppinfra/random_isaac.h> + +static int verbose; +#define if_verbose(format,args...) \ + if (verbose) { clib_warning(format, ## args); } + +int +test_isaac_main (unformat_input_t * input) +{ + uword n_iterations, seed; + uword i, repeat_count; + uword *hash = 0; + uword print; + isaac_t ctx; + uword results[ISAAC_SIZE] = { 0 }; + uword n_results; + + n_iterations = 1000; + seed = 0; + print = 1 << 24; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (0 == unformat (input, "iter %d", &n_iterations) + && 0 == unformat (input, "print %d", &print) + && 0 == unformat (input, "seed %d", &seed)) + clib_error ("unknown input `%U'", format_unformat_error, input); + } + + if (!seed) + seed = random_default_seed (); + + results[0] = seed; + + if (n_iterations == 0) + n_iterations = ~0; + + if_verbose ("%d iterations, seed %d\n", n_iterations, seed); + + repeat_count = 0; + isaac_init (&ctx, results); + isaac (&ctx, results); + n_results = 0; + for (i = 0; i < n_iterations; i++) + { + uword r = results[n_results++]; + + if (!hash) + hash = hash_create (0, /* value bytes */ 0); + + if (hash_get (hash, r)) + goto repeat; + + hash_set1 (hash, r); + + if (n_results >= ARRAY_LEN (results)) + { + isaac (&ctx, results); + n_results = 0; + } + + if (verbose && 0 == (i & (print - 1))) + fformat (stderr, "0x%08x iterations %d repeats\n", i, repeat_count); + + if (hash_elts (hash) > 0x100000) + hash_free (hash); + + continue; + + repeat: + fformat (stderr, "repeat found at iteration %d/%d\n", i, n_iterations); + repeat_count++; + continue; + } + + return repeat_count > 0 ? 1 : 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + verbose = (argc > 1); + unformat_init_command_line (&i, argv); + ret = test_isaac_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_serialize.c b/src/vppinfra/test_serialize.c new file mode 100644 index 00000000..e00eec32 --- /dev/null +++ b/src/vppinfra/test_serialize.c @@ -0,0 +1,274 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/format.h> +#include <vppinfra/random.h> +#include <vppinfra/serialize.h> +#include <vppinfra/os.h> + +#define foreach_my_vector_type \ + _ (u8, a8) \ + _ (u16, a16) \ + _ (u32, a32) + +typedef struct +{ +#define _(t,f) t f; + foreach_my_vector_type +#undef _ +} my_vector_type_t; + +static void +serialize_my_vector_type_single (serialize_main_t * m, va_list * va) +{ + my_vector_type_t *v = va_arg (*va, my_vector_type_t *); + u32 n = va_arg (*va, u32); + u32 i; + + for (i = 0; i < n; i++) + { +#define _(t,f) serialize_integer (m, v[i].f, sizeof (v[i].f)); + foreach_my_vector_type; + } +#undef _ +} + +static void +unserialize_my_vector_type_single (serialize_main_t * m, va_list * va) +{ + my_vector_type_t *v = va_arg (*va, my_vector_type_t *); + u32 n = va_arg (*va, u32); + u32 i; + + for (i = 0; i < n; i++) + { +#define _(t,f) { u32 tmp; unserialize_integer (m, &tmp, sizeof (v[i].f)); v[i].f = tmp; } + foreach_my_vector_type; +#undef _ + } +} + +static void +serialize_my_vector_type_multiple (serialize_main_t * m, va_list * va) +{ + my_vector_type_t *v = va_arg (*va, my_vector_type_t *); + u32 n = va_arg (*va, u32); + +#define _(t,f) \ + serialize_multiple \ + (m, \ + &v[0].f, \ + STRUCT_SIZE_OF (my_vector_type_t, f), \ + STRUCT_STRIDE_OF (my_vector_type_t, f), \ + n); + + foreach_my_vector_type; + +#undef _ +} + +static void +unserialize_my_vector_type_multiple (serialize_main_t * m, va_list * va) +{ + my_vector_type_t *v = va_arg (*va, my_vector_type_t *); + u32 n = va_arg (*va, u32); + +#define _(t,f) \ + unserialize_multiple \ + (m, \ + &v[0].f, \ + STRUCT_SIZE_OF (my_vector_type_t, f), \ + STRUCT_STRIDE_OF (my_vector_type_t, f), \ + n); + + foreach_my_vector_type; + +#undef _ +} + +typedef struct +{ + u32 n_iter; + u32 seed; + u32 verbose; + u32 multiple; + u32 max_len; + + my_vector_type_t **test_vectors; + + char *dump_file; + + serialize_main_t serialize_main; + serialize_main_t unserialize_main; +} test_serialize_main_t; + +int +test_serialize_main (unformat_input_t * input) +{ + clib_error_t *error = 0; + test_serialize_main_t _tm, *tm = &_tm; + serialize_main_t *sm = &tm->serialize_main; + serialize_main_t *um = &tm->unserialize_main; + uword i; + + memset (tm, 0, sizeof (tm[0])); + tm->n_iter = 100; + tm->seed = 1; + tm->max_len = 128; + tm->verbose = 0; + tm->multiple = 1; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "iter %d", &tm->n_iter)) + ; + else if (unformat (input, "seed %d", &tm->seed)) + ; + else if (unformat (input, "file %s", &tm->dump_file)) + ; + else if (unformat (input, "max-len %d", &tm->max_len)) + ; + else if (unformat (input, "multiple %=", &tm->multiple, 1)) + ; + else if (unformat (input, "single %=", &tm->multiple, 0)) + ; + else if (unformat (input, "verbose %=", &tm->verbose, 1)) + ; + else + { + error = clib_error_create ("unknown input `%U'\n", + format_unformat_error, input); + goto done; + } + } + + if (tm->seed == 0) + tm->seed = random_default_seed (); + + clib_warning ("iter %d seed %d max-len %d", tm->n_iter, tm->seed, + tm->max_len); + +#ifdef CLIB_UNIX + if (tm->dump_file) + serialize_open_unix_file (sm, tm->dump_file); + else +#endif + serialize_open_vector (sm, 0); + + vec_resize (tm->test_vectors, tm->n_iter); + for (i = 0; i < tm->n_iter; i++) + { + uword l = 1 + (random_u32 (&tm->seed) % tm->max_len); + my_vector_type_t *mv; + + vec_resize (tm->test_vectors[i], l); + vec_foreach (mv, tm->test_vectors[i]) + { +#define _(t,f) mv->f = random_u32 (&tm->seed) & pow2_mask (31); + foreach_my_vector_type; +#undef _ + } + + vec_serialize (sm, tm->test_vectors[i], + tm->multiple ? serialize_my_vector_type_multiple : + serialize_my_vector_type_single); + } + + if (tm->verbose) + clib_warning ("overflow vector max bytes %d", + vec_max_len (sm->stream.overflow_buffer)); + + serialize_close (sm); + +#ifdef CLIB_UNIX + if (tm->dump_file) + { + if ((error = unserialize_open_unix_file (um, tm->dump_file))) + goto done; + } + else +#endif + { + u8 *v = serialize_close_vector (sm); + unserialize_open_data (um, v, vec_len (v)); + } + + for (i = 0; i < tm->n_iter; i++) + { + my_vector_type_t *mv0; + my_vector_type_t *mv1; + + vec_unserialize (um, &mv0, + tm->multiple ? unserialize_my_vector_type_multiple : + unserialize_my_vector_type_single); + mv1 = tm->test_vectors[i]; + + if (vec_len (mv0) != vec_len (mv1)) + os_panic (); + if (memcmp (mv0, mv1, vec_len (mv0) * sizeof (mv0[0]))) + os_panic (); + + vec_free (mv0); + } + +done: + if (error) + clib_error_report (error); + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int r; + + unformat_init_command_line (&i, argv); + r = test_serialize_main (&i); + unformat_free (&i); + return r; +} +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_slist.c b/src/vppinfra/test_slist.c new file mode 100644 index 00000000..3c3cbf73 --- /dev/null +++ b/src/vppinfra/test_slist.c @@ -0,0 +1,228 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifdef CLIB_UNIX +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#endif + +#include <vppinfra/slist.h> + +typedef struct +{ + u32 *random_pool; + u32 seed; + u32 iter; + u32 verbose; + f64 branching_factor; + clib_slist_t slist; +} test_main_t; + +test_main_t test_main; + +#define foreach_simple_test \ +_(2) \ +_(4) \ +_(3) \ +_(1) + + +void +run_test (test_main_t * tm) +{ + int i; + u32 *tv; + u32 ncompares; + u64 total_compares = 0; + + if (1) + { + /* + * Add a bunch of random numbers to the skip-list, + * sorting them. + */ + for (i = 0; i < tm->iter; i++) + { + pool_get (tm->random_pool, tv); + *tv = random_u32 (&tm->seed); + clib_slist_add (&tm->slist, tv, tv - tm->random_pool); + } + /* make sure we can find each one */ + for (i = 0; i < tm->iter; i++) + { + u32 search_result; + tv = pool_elt_at_index (tm->random_pool, i); + + search_result = clib_slist_search (&tm->slist, tv, &ncompares); + ASSERT (search_result == i); + + total_compares += ncompares; + } + + fformat (stdout, "%.2f avg compares/search\n", + (f64) total_compares / (f64) i); + + fformat (stdout, "%U\n", format_slist, &tm->slist, + tm->iter < 1000 /* verbose */ ); + + /* delete half of them */ + for (i = tm->iter / 2; i < tm->iter; i++) + { + tv = pool_elt_at_index (tm->random_pool, i); + (void) clib_slist_del (&tm->slist, tv); + } + + /* make sure we can find the set we should find, and no others */ + for (i = 0; i < tm->iter; i++) + { + u32 search_result; + tv = pool_elt_at_index (tm->random_pool, i); + + search_result = clib_slist_search (&tm->slist, tv, &ncompares); + if (i >= tm->iter / 2) + ASSERT (search_result == (u32) ~ 0); + else + ASSERT (search_result == i); + + } + + fformat (stdout, "%U\n", format_slist, &tm->slist, + tm->iter < 1000 /* verbose */ ); + + /* delete the rest */ + for (i = 0; i < tm->iter; i++) + { + tv = pool_elt_at_index (tm->random_pool, i); + + (void) clib_slist_del (&tm->slist, tv); + } + + fformat (stdout, "%U\n", format_slist, &tm->slist, + tm->iter < 1000 /* verbose */ ); + } + else + { + +#define _(n) \ + do { \ + pool_get (tm->random_pool, tv); \ + *tv = n; \ + clib_slist_add (&tm->slist, tv, tv - tm->random_pool); \ + fformat(stdout, "%U\n", format_slist, &tm->slist, 1 /* verbose */); \ + } while (0); + foreach_simple_test; +#undef _ + } + + return; +} + +word +test_compare (void *key, u32 elt_index) +{ + u32 *k = (u32 *) key; + u32 elt = test_main.random_pool[elt_index]; + + if (*k < elt) + return -1; + if (*k > elt) + return 1; + return 0; +} + +u8 * +test_format (u8 * s, va_list * args) +{ + u32 elt_index = va_arg (*args, u32); + u32 elt = test_main.random_pool[elt_index]; + + return format (s, "%u", elt); +} + +void +initialize_slist (test_main_t * tm) +{ + clib_slist_init (&tm->slist, tm->branching_factor, + test_compare, test_format); +} + +int +test_slist_main (unformat_input_t * input) +{ + test_main_t *tm = &test_main; + u32 tmp; + + tm->seed = 0xbabeb00b; + tm->iter = 100000; + tm->verbose = 1; + tm->branching_factor = 1.0 / 5.0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "seed %d", &tm->seed)) + continue; + else if (unformat (input, "iter %d", &tm->iter)) + continue; + else if (unformat (input, "verbose")) + tm->verbose = 1; + else if (unformat (input, "branch %d", &tmp)) + { + if (tmp > 0) + tm->branching_factor = 1.0 / (f64) tmp; + else + fformat (stderr, "warning: branch = 0, ignored\n"); + } + else + { + clib_error ("unknown input `%U'", format_unformat_error, input); + goto usage; + } + } + initialize_slist (tm); + run_test (tm); + + return 0; + +usage: + fformat (stderr, "usage: test_slist seed <seed> iter <iter> [verbose]\n"); + return 1; + +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + clib_mem_init (0, (u64) 4 << 30); + + unformat_init_command_line (&i, argv); + ret = test_slist_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_socket.c b/src/vppinfra/test_socket.c new file mode 100644 index 00000000..2f25eccd --- /dev/null +++ b/src/vppinfra/test_socket.c @@ -0,0 +1,134 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/format.h> +#include <vppinfra/socket.h> + +static int verbose; +#define if_verbose(format,args...) \ + if (verbose) { clib_warning(format, ## args); } + +int +test_socket_main (unformat_input_t * input) +{ + clib_socket_t _s = { 0 }, *s = &_s; + char *config; + clib_error_t *error; + + s->config = "localhost:22"; + s->flags = CLIB_SOCKET_F_IS_CLIENT; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "server %s %=", &config, + &s->flags, CLIB_SOCKET_F_IS_SERVER)) + ; + else if (unformat (input, "client %s %=", &config, + &s->flags, CLIB_SOCKET_F_IS_CLIENT)) + ; + else + { + error = clib_error_create ("unknown input `%U'\n", + format_unformat_error, input); + goto done; + } + } + + error = clib_socket_init (s); + if (error) + goto done; + + if (0) + { + struct + { + int a, b; + } *msg; + msg = clib_socket_tx_add (s, sizeof (msg[0])); + msg->a = 99; + msg->b = 100; + } + else + clib_socket_tx_add_formatted (s, "hello there mr server %d\n", 99); + + error = clib_socket_tx (s); + if (error) + goto done; + + while (1) + { + error = clib_socket_rx (s, 100); + if (error) + break; + + if (clib_socket_rx_end_of_file (s)) + break; + + if_verbose ("%v", s->rx_buffer); + _vec_len (s->rx_buffer) = 0; + } + + error = clib_socket_close (s); + +done: + if (error) + clib_error_report (error); + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int r; + + verbose = (argc > 1); + unformat_init_command_line (&i, argv); + r = test_socket_main (&i); + unformat_free (&i); + return r; +} +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_time.c b/src/vppinfra/test_time.c new file mode 100644 index 00000000..63cfeac5 --- /dev/null +++ b/src/vppinfra/test_time.c @@ -0,0 +1,104 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/format.h> +#include <vppinfra/time.h> +#include <vppinfra/math.h> /* for sqrt */ + +static int verbose; +#define if_verbose(format,args...) \ + if (verbose) { clib_warning(format, ## args); } + +static int +test_time_main (unformat_input_t * input) +{ + f64 wait, error; + f64 t, tu[3], ave, rms; + clib_time_t c; + int i, n, j; + + clib_time_init (&c); + wait = 1e-3; + n = 1000; + unformat (input, "%f %d", &wait, &n); + ave = rms = 0; + tu[0] = unix_time_now (); + tu[1] = unix_time_now (); + for (i = 0; i < n; i++) + { + j = 0; + t = clib_time_now (&c); + while (clib_time_now (&c) < t + wait) + j++; + t = j; + ave += t; + rms += t * t; + } + tu[2] = unix_time_now (); + ave /= n; + rms = sqrt (rms / n - ave * ave); + + error = ((tu[2] - tu[1]) - 2 * (tu[1] - tu[0]) - n * wait) / n; + if_verbose ("tested %d x %.6e sec waits, error %.6e loops %.6e +- %.6e\n", + n, wait, error, ave, rms); + + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + verbose = (argc > 1); + unformat_init_command_line (&i, argv); + ret = test_time_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_timing_wheel.c b/src/vppinfra/test_timing_wheel.c new file mode 100644 index 00000000..0ce15ad8 --- /dev/null +++ b/src/vppinfra/test_timing_wheel.c @@ -0,0 +1,389 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vppinfra/bitmap.h> +#include <vppinfra/error.h> +#include <vppinfra/format.h> +#include <vppinfra/pool.h> +#include <vppinfra/random.h> +#include <vppinfra/time.h> +#include <vppinfra/timing_wheel.h> +#include <vppinfra/zvec.h> + +#include <vppinfra/math.h> + +#if __GNUC__ < 4 +#define SQRT(a) a +#else +#define SQRT(a) sqrt(a) +#endif + +typedef struct +{ + uword n_iter; + + u32 n_events; + u32 seed; + u32 verbose; + + /* Time is "synthetic" e.g. not taken from CPU timer. */ + u32 synthetic_time; + + clib_time_t time; + timing_wheel_t timing_wheel; + + u64 *events; + + f64 max_time; + f64 wait_time; + + f64 total_iterate_time; + f64 time_iterate_start; + + f64 time_per_status_update; + f64 time_next_status_update; +} test_timing_wheel_main_t; + +typedef struct +{ + f64 dt; + f64 fraction; + u64 count; +} test_timing_wheel_tmp_t; + +static void +set_event (test_timing_wheel_main_t * tm, uword i) +{ + timing_wheel_t *w = &tm->timing_wheel; + u64 cpu_time; + + cpu_time = w->current_time_index << w->log2_clocks_per_bin; + if (tm->synthetic_time) + cpu_time += random_u32 (&tm->seed) % tm->n_iter; + else + cpu_time += + random_f64 (&tm->seed) * tm->max_time * tm->time.clocks_per_second; + + timing_wheel_insert (w, cpu_time, i); + timing_wheel_validate (w); + tm->events[i] = cpu_time; +} + +static int +test_timing_wheel_tmp_cmp (void *a1, void *a2) +{ + test_timing_wheel_tmp_t *f1 = a1; + test_timing_wheel_tmp_t *f2 = a2; + + return f1->dt < f2->dt ? -1 : (f1->dt > f2->dt ? +1 : 0); +} + +clib_error_t * +test_timing_wheel_main (unformat_input_t * input) +{ + clib_error_t *error = 0; + test_timing_wheel_main_t _tm, *tm = &_tm; + timing_wheel_t *w = &tm->timing_wheel; + uword iter, i; + + memset (tm, 0, sizeof (tm[0])); + tm->n_iter = 10; + tm->time_per_status_update = 0; + tm->n_events = 100; + tm->seed = 1; + tm->synthetic_time = 1; + tm->max_time = 1; + tm->wait_time = 1e-3; + + w->validate = 0; + w->n_wheel_elt_time_bits = 32; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "iter %wd", &tm->n_iter)) + ; + else if (unformat (input, "events %d", &tm->n_events)) + ; + else + if (unformat (input, "elt-time-bits %d", &w->n_wheel_elt_time_bits)) + ; + else if (unformat (input, "seed %d", &tm->seed)) + ; + else if (unformat (input, "verbose")) + tm->verbose = 1; + else if (unformat (input, "validate")) + w->validate = 1; + + else if (unformat (input, "real-time")) + tm->synthetic_time = 0; + else if (unformat (input, "synthetic-time")) + tm->synthetic_time = 1; + else if (unformat (input, "max-time %f", &tm->max_time)) + ; + else if (unformat (input, "wait-time %f", &tm->wait_time)) + ; + else if (unformat (input, "iter-time %f", &tm->total_iterate_time)) + ; + else if (unformat (input, "print %f", &tm->time_per_status_update)) + ; + + else + { + error = clib_error_create ("unknown input `%U'\n", + format_unformat_error, input); + goto done; + } + } + + if (!tm->seed) + tm->seed = random_default_seed (); + + clib_time_init (&tm->time); + + if (tm->synthetic_time) + { + w->min_sched_time = tm->time.seconds_per_clock; + w->max_sched_time = w->min_sched_time * 256; + timing_wheel_init (w, 0, tm->time.clocks_per_second); + } + else + { + timing_wheel_init (w, clib_cpu_time_now (), tm->time.clocks_per_second); + } + + clib_warning ("iter %wd, events %d, seed %u, %U", + tm->n_iter, tm->n_events, tm->seed, + format_timing_wheel, &tm->timing_wheel, /* verbose */ 0); + + /* Make some events. */ + vec_resize (tm->events, tm->n_events); + for (i = 0; i < vec_len (tm->events); i++) + set_event (tm, i); + + { + u32 *expired = 0; + f64 ave_error = 0; + f64 rms_error = 0; + f64 max_error = 0, min_error = 1e30; + u32 *error_hist = 0; + uword n_expired = 0; + uword *expired_bitmap[2] = { 0 }; + uword n_events_in_wheel = vec_len (tm->events); + + vec_resize (expired, 32); + vec_resize (error_hist, 1024); + + tm->time_iterate_start = clib_time_now (&tm->time); + tm->time_next_status_update = + tm->time_iterate_start + tm->time_per_status_update; + + if (tm->total_iterate_time != 0) + tm->n_iter = ~0; + + for (iter = 0; iter < tm->n_iter || n_events_in_wheel > 0; iter++) + { + u64 cpu_time, min_next_time[2]; + + if (tm->synthetic_time) + cpu_time = iter << w->log2_clocks_per_bin; + else + cpu_time = clib_cpu_time_now (); + + _vec_len (expired) = 0; + expired = + timing_wheel_advance (w, cpu_time, expired, &min_next_time[0]); + timing_wheel_validate (w); + + /* Update bitmap of expired events. */ + if (w->validate) + { + for (i = 0; i < vec_len (tm->events); i++) + { + uword is_expired; + + is_expired = + (cpu_time >> w->log2_clocks_per_bin) >= + (tm->events[i] >> w->log2_clocks_per_bin); + expired_bitmap[0] = + clib_bitmap_set (expired_bitmap[0], i, is_expired); + + /* Validate min next time. */ + if (is_expired) + ASSERT (min_next_time[0] > tm->events[i]); + else + ASSERT (min_next_time[0] <= tm->events[i]); + } + } + + n_expired += vec_len (expired); + for (i = 0; i < vec_len (expired); i++) + { + word j, idt; + i64 dt_cpu; + f64 fdt_cpu; + + j = expired[i]; + expired_bitmap[1] = clib_bitmap_ori (expired_bitmap[1], j); + + dt_cpu = cpu_time - tm->events[j]; + + /* Event must be scheduled in correct bin. */ + if (tm->synthetic_time) + ASSERT (dt_cpu >= 0 && dt_cpu <= (1 << w->log2_clocks_per_bin)); + + fdt_cpu = dt_cpu * tm->time.seconds_per_clock; + + ave_error += fdt_cpu; + rms_error += fdt_cpu * fdt_cpu; + + if (fdt_cpu > max_error) + max_error = fdt_cpu; + if (fdt_cpu < min_error) + min_error = fdt_cpu; + + idt = + (cpu_time >> w->log2_clocks_per_bin) - + (tm->events[j] >> w->log2_clocks_per_bin); + idt = zvec_signed_to_unsigned (idt); + vec_validate (error_hist, idt); + error_hist[idt] += 1; + } + + if (w->validate) + for (i = 0; i < vec_len (tm->events); i++) + { + int is_expired = clib_bitmap_get (expired_bitmap[0], i); + int is_expired_w = clib_bitmap_get (expired_bitmap[1], i); + ASSERT (is_expired == is_expired_w); + } + + min_next_time[1] = ~0; + for (i = 0; i < vec_len (tm->events); i++) + { + if (!clib_bitmap_get (expired_bitmap[1], i)) + min_next_time[1] = clib_min (min_next_time[1], tm->events[i]); + } + if (min_next_time[0] != min_next_time[1]) + clib_error ("min next time wrong 0x%Lx != 0x%Lx", min_next_time[0], + min_next_time[1]); + + if (tm->time_per_status_update != 0 + && clib_time_now (&tm->time) >= tm->time_next_status_update) + { + f64 ave = 0, rms = 0; + + tm->time_next_status_update += tm->time_per_status_update; + if (n_expired > 0) + { + ave = ave_error / n_expired; + rms = SQRT (rms_error / n_expired - ave * ave); + } + + clib_warning + ("%12wd iter done %10wd expired; ave. error %.4e +- %.4e, range %.4e %.4e", + iter, n_expired, ave, rms, min_error, max_error); + } + + if (tm->total_iterate_time != 0 + && (clib_time_now (&tm->time) - tm->time_iterate_start + >= tm->total_iterate_time)) + tm->n_iter = iter; + + /* Add new events to wheel to replace expired ones. */ + n_events_in_wheel -= vec_len (expired); + if (iter < tm->n_iter) + { + for (i = 0; i < vec_len (expired); i++) + { + uword j = expired[i]; + set_event (tm, j); + expired_bitmap[1] = + clib_bitmap_andnoti (expired_bitmap[1], j); + } + n_events_in_wheel += vec_len (expired); + } + } + + ave_error /= n_expired; + rms_error = SQRT (rms_error / n_expired - ave_error * ave_error); + + clib_warning + ("%wd iter done %wd expired; ave. error %.4e +- %.4e, range %.4e %.4e", + 1 + iter, n_expired, ave_error, rms_error, min_error, max_error); + + { + test_timing_wheel_tmp_t *fs, *f; + f64 total_fraction; + + fs = 0; + for (i = 0; i < vec_len (error_hist); i++) + { + if (error_hist[i] == 0) + continue; + vec_add2 (fs, f, 1); + f->dt = + (((i64) zvec_unsigned_to_signed (i) << w->log2_clocks_per_bin) * + tm->time.seconds_per_clock); + f->fraction = (f64) error_hist[i] / (f64) n_expired; + f->count = error_hist[i]; + } + + vec_sort_with_function (fs, test_timing_wheel_tmp_cmp); + + total_fraction = 0; + vec_foreach (f, fs) + { + total_fraction += f->fraction; + if (f == fs) + fformat (stdout, "%=12s %=16s %=16s %s\n", "Error max", "Fraction", + "Total", "Count"); + fformat (stdout, "%12.4e %16.4f%% %16.4f%% %Ld\n", f->dt, + f->fraction * 100, total_fraction * 100, f->count); + } + } + + clib_warning ("%U", format_timing_wheel, w, /* verbose */ 1); + } + +done: + return error; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + clib_error_t *error; + + unformat_init_command_line (&i, argv); + error = test_timing_wheel_main (&i); + unformat_free (&i); + if (error) + { + clib_error_report (error); + return 1; + } + else + return 0; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_tw_timer.c b/src/vppinfra/test_tw_timer.c new file mode 100644 index 00000000..ec0baa07 --- /dev/null +++ b/src/vppinfra/test_tw_timer.c @@ -0,0 +1,1275 @@ +#include <vppinfra/time.h> +#include <vppinfra/cache.h> +#include <vppinfra/error.h> +#include <vppinfra/tw_timer_2t_1w_2048sl.h> +#include <vppinfra/tw_timer_16t_2w_512sl.h> +#include <vppinfra/tw_timer_4t_3w_256sl.h> +#include <vppinfra/tw_timer_1t_3w_1024sl_ov.h> + +typedef struct +{ + /** Handle returned from tw_start_timer */ + u32 stop_timer_handle; + + /** Test item should expire at this clock tick */ + u64 expected_to_expire; +} tw_timer_test_elt_t; + +typedef struct +{ + /** Pool of test objects */ + tw_timer_test_elt_t *test_elts; + + /** The single-wheel */ + tw_timer_wheel_2t_1w_2048sl_t single_wheel; + + /** The double-wheel */ + tw_timer_wheel_16t_2w_512sl_t double_wheel; + + /* The triple wheel */ + tw_timer_wheel_4t_3w_256sl_t triple_wheel; + + /* The triple wheel with overflow vector */ + tw_timer_wheel_1t_3w_1024sl_ov_t triple_ov_wheel; + + /** random number seed */ + u64 seed; + + /** number of timers */ + u32 ntimers; + + /** number of "churn" iterations */ + u32 niter; + + /** number of clock ticks per churn iteration */ + u32 ticks_per_iter; + + /** cpu timer */ + clib_time_t clib_time; +} tw_timer_test_main_t; + +tw_timer_test_main_t tw_timer_test_main; + +static void +run_single_wheel (tw_timer_wheel_2t_1w_2048sl_t * tw, u32 n_ticks) +{ + u32 i; + f64 now = tw->last_run_time + 1.01; + + for (i = 0; i < n_ticks; i++) + { + tw_timer_expire_timers_2t_1w_2048sl (tw, now); + now += 1.01; + } +} + +static void +run_double_wheel (tw_timer_wheel_16t_2w_512sl_t * tw, u32 n_ticks) +{ + u32 i; + f64 now = tw->last_run_time + 1.01; + + for (i = 0; i < n_ticks; i++) + { + tw_timer_expire_timers_16t_2w_512sl (tw, now); + now += 1.01; + } +} + +static void +run_triple_wheel (tw_timer_wheel_4t_3w_256sl_t * tw, u32 n_ticks) +{ + u32 i; + f64 now = tw->last_run_time + 1.01; + + for (i = 0; i < n_ticks; i++) + { + tw_timer_expire_timers_4t_3w_256sl (tw, now); + now += 1.01; + } +} + +static void +run_triple_ov_wheel (tw_timer_wheel_1t_3w_1024sl_ov_t * tw, u32 n_ticks) +{ + u32 i; + f64 now = tw->last_run_time + 1.01; + + for (i = 0; i < n_ticks; i++) + { + tw_timer_expire_timers_1t_3w_1024sl_ov (tw, now); + now += 1.01; + } +} + +static void +expired_timer_single_callback (u32 * expired_timers) +{ + int i; + u32 pool_index, timer_id; + tw_timer_test_elt_t *e; + tw_timer_test_main_t *tm = &tw_timer_test_main; + + for (i = 0; i < vec_len (expired_timers); i++) + { + pool_index = expired_timers[i] & 0x7FFFFFFF; + timer_id = expired_timers[i] >> 31; + + ASSERT (timer_id == 1); + + e = pool_elt_at_index (tm->test_elts, pool_index); + + if (e->expected_to_expire != tm->single_wheel.current_tick) + { + fformat (stdout, "[%d] expired at %lld not %lld\n", + e - tm->test_elts, tm->single_wheel.current_tick, + e->expected_to_expire); + } + pool_put (tm->test_elts, e); + } +} + +static void +expired_timer_double_callback (u32 * expired_timers) +{ + int i; + u32 pool_index, timer_id; + tw_timer_test_elt_t *e; + tw_timer_test_main_t *tm = &tw_timer_test_main; + + for (i = 0; i < vec_len (expired_timers); i++) + { + pool_index = expired_timers[i] & 0x0FFFFFFF; + timer_id = expired_timers[i] >> 28; + + ASSERT (timer_id == 14); + + e = pool_elt_at_index (tm->test_elts, pool_index); + + if (e->expected_to_expire != tm->double_wheel.current_tick) + { + fformat (stdout, "[%d] expired at %lld not %lld\n", + e - tm->test_elts, tm->double_wheel.current_tick, + e->expected_to_expire); + } + pool_put (tm->test_elts, e); + } +} + +static void +expired_timer_triple_callback (u32 * expired_timers) +{ + int i; + u32 pool_index, timer_id; + tw_timer_test_elt_t *e; + tw_timer_test_main_t *tm = &tw_timer_test_main; + + for (i = 0; i < vec_len (expired_timers); i++) + { + pool_index = expired_timers[i] & 0x3FFFFFFF; + timer_id = expired_timers[i] >> 30; + + ASSERT (timer_id == 3); + + e = pool_elt_at_index (tm->test_elts, pool_index); + + if (e->expected_to_expire != tm->triple_wheel.current_tick) + { + fformat (stdout, "[%d] expired at %lld not %lld\n", + e - tm->test_elts, tm->triple_wheel.current_tick, + e->expected_to_expire); + } + pool_put (tm->test_elts, e); + } +} + +static void +expired_timer_triple_ov_callback (u32 * expired_timers) +{ + int i; + u32 pool_index; + tw_timer_test_elt_t *e; + tw_timer_test_main_t *tm = &tw_timer_test_main; + + for (i = 0; i < vec_len (expired_timers); i++) + { + pool_index = expired_timers[i]; + + e = pool_elt_at_index (tm->test_elts, pool_index); + + if (e->expected_to_expire != tm->triple_ov_wheel.current_tick) + { + fformat (stdout, "[%d] expired at %lld not %lld\n", + e - tm->test_elts, tm->triple_ov_wheel.current_tick, + e->expected_to_expire); + } + pool_put (tm->test_elts, e); + } +} + +static clib_error_t * +test2_single (tw_timer_test_main_t * tm) +{ + u32 i, j; + tw_timer_test_elt_t *e; + u32 initial_wheel_offset; + u64 expiration_time; + u32 max_expiration_time = 0; + u32 *deleted_indices = 0; + u32 adds = 0, deletes = 0; + f64 before, after; + + clib_time_init (&tm->clib_time); + + tw_timer_wheel_init_2t_1w_2048sl (&tm->single_wheel, + expired_timer_single_callback, + 1.0 /* timer interval */ , ~0); + + /* Prime offset */ + initial_wheel_offset = 757; + + run_single_wheel (&tm->single_wheel, initial_wheel_offset); + + fformat (stdout, "initial wheel time %d, fast index %d\n", + tm->single_wheel.current_tick, + tm->single_wheel.current_index[TW_TIMER_RING_FAST]); + + initial_wheel_offset = tm->single_wheel.current_tick; + + fformat (stdout, + "test %d timers, %d iter, %d ticks per iter, 0x%llx seed\n", + tm->ntimers, tm->niter, tm->ticks_per_iter, tm->seed); + + before = clib_time_now (&tm->clib_time); + + /* Prime the pump */ + for (i = 0; i < tm->ntimers; i++) + { + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + do + { + expiration_time = random_u64 (&tm->seed) & (2047); + } + while (expiration_time == 0); + + if (expiration_time > max_expiration_time) + max_expiration_time = expiration_time; + + e->expected_to_expire = expiration_time + initial_wheel_offset; + e->stop_timer_handle = + tw_timer_start_2t_1w_2048sl (&tm->single_wheel, e - tm->test_elts, + 1 /* timer id */ , + expiration_time); + } + + adds += i; + + for (i = 0; i < tm->niter; i++) + { + run_single_wheel (&tm->single_wheel, tm->ticks_per_iter); + + j = 0; + vec_reset_length (deleted_indices); + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + tw_timer_stop_2t_1w_2048sl (&tm->single_wheel, e->stop_timer_handle); + vec_add1 (deleted_indices, e - tm->test_elts); + if (++j >= tm->ntimers / 4) + goto del_and_re_add; + })); + /* *INDENT-ON* */ + + del_and_re_add: + for (j = 0; j < vec_len (deleted_indices); j++) + { + pool_put_index (tm->test_elts, deleted_indices[j]); + } + + deletes += j; + + for (j = 0; j < tm->ntimers / 4; j++) + { + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + do + { + expiration_time = random_u64 (&tm->seed) & (2047); + } + while (expiration_time == 0); + + if (expiration_time > max_expiration_time) + max_expiration_time = expiration_time; + + e->expected_to_expire = + expiration_time + tm->single_wheel.current_tick; + e->stop_timer_handle = tw_timer_start_2t_1w_2048sl + (&tm->single_wheel, e - tm->test_elts, 1 /* timer id */ , + expiration_time); + } + adds += j; + } + + vec_free (deleted_indices); + + run_single_wheel (&tm->single_wheel, max_expiration_time + 1); + + after = clib_time_now (&tm->clib_time); + + fformat (stdout, "%d adds, %d deletes, %d ticks\n", adds, deletes, + tm->single_wheel.current_tick); + fformat (stdout, "test ran %.2f seconds, %.2f ops/second\n", + (after - before), + ((f64) adds + (f64) deletes + + (f64) tm->single_wheel.current_tick) / (after - before)); + + if (pool_elts (tm->test_elts)) + fformat (stdout, "Note: %d elements remain in pool\n", + pool_elts (tm->test_elts)); + + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + fformat (stdout, "[%d] expected to expire %d\n", + e - tm->test_elts, + e->expected_to_expire); + })); + /* *INDENT-ON* */ + + pool_free (tm->test_elts); + tw_timer_wheel_free_2t_1w_2048sl (&tm->single_wheel); + return 0; +} + +static clib_error_t * +test2_double (tw_timer_test_main_t * tm) +{ + u32 i, j; + tw_timer_test_elt_t *e; + u32 initial_wheel_offset; + u32 expiration_time; + u32 max_expiration_time = 0; + u32 *deleted_indices = 0; + u32 adds = 0, deletes = 0; + f64 before, after; + + clib_time_init (&tm->clib_time); + + tw_timer_wheel_init_16t_2w_512sl (&tm->double_wheel, + expired_timer_double_callback, + 1.0 /* timer interval */ , ~0); + + /* Prime offset */ + initial_wheel_offset = 7577; + + run_double_wheel (&tm->double_wheel, initial_wheel_offset); + + fformat (stdout, "initial wheel time %d, fast index %d slow index %d\n", + tm->double_wheel.current_tick, + tm->double_wheel.current_index[TW_TIMER_RING_FAST], + tm->double_wheel.current_index[TW_TIMER_RING_SLOW]); + + initial_wheel_offset = tm->double_wheel.current_tick; + + fformat (stdout, + "test %d timers, %d iter, %d ticks per iter, 0x%llx seed\n", + tm->ntimers, tm->niter, tm->ticks_per_iter, tm->seed); + + before = clib_time_now (&tm->clib_time); + + /* Prime the pump */ + for (i = 0; i < tm->ntimers; i++) + { + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + do + { + expiration_time = random_u64 (&tm->seed) & ((1 << 17) - 1); + } + while (expiration_time == 0); + + if (expiration_time > max_expiration_time) + max_expiration_time = expiration_time; + + e->expected_to_expire = expiration_time + initial_wheel_offset; + + e->stop_timer_handle = + tw_timer_start_16t_2w_512sl (&tm->double_wheel, e - tm->test_elts, + 14 /* timer id */ , + expiration_time); + } + + adds += i; + + for (i = 0; i < tm->niter; i++) + { + run_double_wheel (&tm->double_wheel, tm->ticks_per_iter); + + j = 0; + vec_reset_length (deleted_indices); + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + tw_timer_stop_16t_2w_512sl (&tm->double_wheel, e->stop_timer_handle); + vec_add1 (deleted_indices, e - tm->test_elts); + if (++j >= tm->ntimers / 4) + goto del_and_re_add; + })); + /* *INDENT-ON* */ + + del_and_re_add: + for (j = 0; j < vec_len (deleted_indices); j++) + pool_put_index (tm->test_elts, deleted_indices[j]); + + deletes += j; + + for (j = 0; j < tm->ntimers / 4; j++) + { + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + do + { + expiration_time = random_u64 (&tm->seed) & ((1 << 17) - 1); + } + while (expiration_time == 0); + + if (expiration_time > max_expiration_time) + max_expiration_time = expiration_time; + + e->expected_to_expire = expiration_time + + tm->double_wheel.current_tick; + + e->stop_timer_handle = tw_timer_start_16t_2w_512sl + (&tm->double_wheel, e - tm->test_elts, 14 /* timer id */ , + expiration_time); + } + adds += j; + } + + vec_free (deleted_indices); + + run_double_wheel (&tm->double_wheel, max_expiration_time + 1); + + after = clib_time_now (&tm->clib_time); + + fformat (stdout, "%d adds, %d deletes, %d ticks\n", adds, deletes, + tm->double_wheel.current_tick); + fformat (stdout, "test ran %.2f seconds, %.2f ops/second\n", + (after - before), + ((f64) adds + (f64) deletes + + (f64) tm->double_wheel.current_tick) / (after - before)); + + if (pool_elts (tm->test_elts)) + fformat (stdout, "Note: %d elements remain in pool\n", + pool_elts (tm->test_elts)); + + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + fformat (stdout, "[%d] expected to expire %d\n", + e - tm->test_elts, + e->expected_to_expire); + })); + /* *INDENT-ON* */ + + pool_free (tm->test_elts); + tw_timer_wheel_free_16t_2w_512sl (&tm->double_wheel); + return 0; +} + +static clib_error_t * +test2_triple (tw_timer_test_main_t * tm) +{ + u32 i, j; + tw_timer_test_elt_t *e; + u32 initial_wheel_offset = 0; + u32 expiration_time; + u32 max_expiration_time = 0; + u32 *deleted_indices = 0; + u32 adds = 0, deletes = 0; + f64 before, after; + + clib_time_init (&tm->clib_time); + + tw_timer_wheel_init_4t_3w_256sl (&tm->triple_wheel, + expired_timer_triple_callback, + 1.0 /* timer interval */ , ~0); + + + /* Prime offset */ + initial_wheel_offset = 75700; + run_triple_wheel (&tm->triple_wheel, initial_wheel_offset); + + fformat (stdout, + "initial wheel time %d, fi %d si %d gi %d\n", + tm->triple_wheel.current_tick, + tm->triple_wheel.current_index[TW_TIMER_RING_FAST], + tm->triple_wheel.current_index[TW_TIMER_RING_SLOW], + tm->triple_wheel.current_index[TW_TIMER_RING_GLACIER]); + + initial_wheel_offset = tm->triple_wheel.current_tick; + + fformat (stdout, + "test %d timers, %d iter, %d ticks per iter, 0x%llx seed\n", + tm->ntimers, tm->niter, tm->ticks_per_iter, tm->seed); + + before = clib_time_now (&tm->clib_time); + + /* Prime the pump */ + for (i = 0; i < tm->ntimers; i++) + { + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + do + { + expiration_time = random_u64 (&tm->seed) & ((1 << 17) - 1); + } + while (expiration_time == 0); + + if (expiration_time > max_expiration_time) + max_expiration_time = expiration_time; + + e->expected_to_expire = expiration_time + initial_wheel_offset; + + e->stop_timer_handle = + tw_timer_start_4t_3w_256sl (&tm->triple_wheel, e - tm->test_elts, + 3 /* timer id */ , + expiration_time); + } + + adds += i; + + for (i = 0; i < tm->niter; i++) + { + run_triple_wheel (&tm->triple_wheel, tm->ticks_per_iter); + + j = 0; + vec_reset_length (deleted_indices); + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + tw_timer_stop_4t_3w_256sl (&tm->triple_wheel, e->stop_timer_handle); + vec_add1 (deleted_indices, e - tm->test_elts); + if (++j >= tm->ntimers / 4) + goto del_and_re_add; + })); + /* *INDENT-ON* */ + + del_and_re_add: + for (j = 0; j < vec_len (deleted_indices); j++) + pool_put_index (tm->test_elts, deleted_indices[j]); + + deletes += j; + + for (j = 0; j < tm->ntimers / 4; j++) + { + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + do + { + expiration_time = random_u64 (&tm->seed) & ((1 << 17) - 1); + } + while (expiration_time == 0); + + if (expiration_time > max_expiration_time) + max_expiration_time = expiration_time; + + e->expected_to_expire = expiration_time + + tm->triple_wheel.current_tick; + + e->stop_timer_handle = tw_timer_start_4t_3w_256sl + (&tm->triple_wheel, e - tm->test_elts, 3 /* timer id */ , + expiration_time); + } + adds += j; + } + + vec_free (deleted_indices); + + run_triple_wheel (&tm->triple_wheel, max_expiration_time + 1); + + after = clib_time_now (&tm->clib_time); + + fformat (stdout, "%d adds, %d deletes, %d ticks\n", adds, deletes, + tm->triple_wheel.current_tick); + fformat (stdout, "test ran %.2f seconds, %.2f ops/second\n", + (after - before), + ((f64) adds + (f64) deletes + + (f64) tm->triple_wheel.current_tick) / (after - before)); + + if (pool_elts (tm->test_elts)) + fformat (stdout, "Note: %d elements remain in pool\n", + pool_elts (tm->test_elts)); + + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + fformat (stdout, "[%d] expected to expire %d\n", + e - tm->test_elts, + e->expected_to_expire); + })); + /* *INDENT-ON* */ + + pool_free (tm->test_elts); + tw_timer_wheel_free_4t_3w_256sl (&tm->triple_wheel); + return 0; +} + +static clib_error_t * +test2_triple_ov (tw_timer_test_main_t * tm) +{ + u32 i, j; + tw_timer_test_elt_t *e; + u32 initial_wheel_offset = 0; + u32 expiration_time; + u32 max_expiration_time = 0; + u32 *deleted_indices = 0; + u32 adds = 0, deletes = 0; + f64 before, after; + + clib_time_init (&tm->clib_time); + + tw_timer_wheel_init_1t_3w_1024sl_ov (&tm->triple_ov_wheel, + expired_timer_triple_ov_callback, + 1.0 /* timer interval */ , ~0); + + + /* Prime offset */ + initial_wheel_offset = 75700; + run_triple_ov_wheel (&tm->triple_ov_wheel, initial_wheel_offset); + + fformat (stdout, + "initial wheel time %d, fi %d si %d gi %d\n", + tm->triple_ov_wheel.current_tick, + tm->triple_ov_wheel.current_index[TW_TIMER_RING_FAST], + tm->triple_ov_wheel.current_index[TW_TIMER_RING_SLOW], + tm->triple_ov_wheel.current_index[TW_TIMER_RING_GLACIER]); + + initial_wheel_offset = tm->triple_ov_wheel.current_tick; + + fformat (stdout, + "test %d timers, %d iter, %d ticks per iter, 0x%llx seed\n", + tm->ntimers, tm->niter, tm->ticks_per_iter, tm->seed); + + before = clib_time_now (&tm->clib_time); + + /* Prime the pump */ + for (i = 0; i < tm->ntimers; i++) + { + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + do + { + expiration_time = random_u64 (&tm->seed) & ((1 << 17) - 1); + } + while (expiration_time == 0); + + if (expiration_time > max_expiration_time) + max_expiration_time = expiration_time; + + e->expected_to_expire = expiration_time + initial_wheel_offset; + + e->stop_timer_handle = + tw_timer_start_1t_3w_1024sl_ov (&tm->triple_ov_wheel, + e - tm->test_elts, 0 /* timer id */ , + expiration_time); + } + + adds += i; + + for (i = 0; i < tm->niter; i++) + { + run_triple_ov_wheel (&tm->triple_ov_wheel, tm->ticks_per_iter); + + j = 0; + vec_reset_length (deleted_indices); + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + tw_timer_stop_1t_3w_1024sl_ov (&tm->triple_ov_wheel, + e->stop_timer_handle); + vec_add1 (deleted_indices, e - tm->test_elts); + if (++j >= tm->ntimers / 4) + goto del_and_re_add; + })); + /* *INDENT-ON* */ + + del_and_re_add: + for (j = 0; j < vec_len (deleted_indices); j++) + pool_put_index (tm->test_elts, deleted_indices[j]); + + deletes += j; + + for (j = 0; j < tm->ntimers / 4; j++) + { + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + do + { + expiration_time = random_u64 (&tm->seed) & ((1 << 17) - 1); + } + while (expiration_time == 0); + + if (expiration_time > max_expiration_time) + max_expiration_time = expiration_time; + + e->expected_to_expire = expiration_time + + tm->triple_ov_wheel.current_tick; + + e->stop_timer_handle = tw_timer_start_1t_3w_1024sl_ov + (&tm->triple_ov_wheel, e - tm->test_elts, 0 /* timer id */ , + expiration_time); + } + adds += j; + } + + vec_free (deleted_indices); + + run_triple_ov_wheel (&tm->triple_ov_wheel, max_expiration_time + 1); + + after = clib_time_now (&tm->clib_time); + + fformat (stdout, "%d adds, %d deletes, %d ticks\n", adds, deletes, + tm->triple_ov_wheel.current_tick); + fformat (stdout, "test ran %.2f seconds, %.2f ops/second\n", + (after - before), + ((f64) adds + (f64) deletes + + (f64) tm->triple_ov_wheel.current_tick) / (after - before)); + + if (pool_elts (tm->test_elts)) + fformat (stdout, "Note: %d elements remain in pool\n", + pool_elts (tm->test_elts)); + + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + TWT (tw_timer) * t; + + fformat (stdout, "[%d] expected to expire %d\n", + e - tm->test_elts, + e->expected_to_expire); + t = pool_elt_at_index (tm->triple_ov_wheel.timers, e->stop_timer_handle); + fformat (stdout, " expiration_time %lld\n", t->expiration_time); + })); + /* *INDENT-ON* */ + + pool_free (tm->test_elts); + tw_timer_wheel_free_1t_3w_1024sl_ov (&tm->triple_ov_wheel); + return 0; +} + +static clib_error_t * +test1_single (tw_timer_test_main_t * tm) +{ + u32 i; + tw_timer_test_elt_t *e; + u32 offset; + + tw_timer_wheel_init_2t_1w_2048sl (&tm->single_wheel, + expired_timer_single_callback, + 1.0 /* timer interval */ , ~0); + + /* + * Prime offset, to make sure that the wheel starts in a + * non-trivial position + */ + offset = 123; + + run_single_wheel (&tm->single_wheel, offset); + + fformat (stdout, "initial wheel time %d, fast index %d\n", + tm->single_wheel.current_tick, + tm->single_wheel.current_index[TW_TIMER_RING_FAST]); + + offset = tm->single_wheel.current_tick; + + for (i = 0; i < tm->ntimers; i++) + { + u32 expected_to_expire; + u32 timer_arg; + + timer_arg = 1 + i; + timer_arg &= 2047; + if (timer_arg == 0) + timer_arg = 1; + + expected_to_expire = timer_arg + offset; + + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + e->expected_to_expire = expected_to_expire; + e->stop_timer_handle = tw_timer_start_2t_1w_2048sl + (&tm->single_wheel, e - tm->test_elts, 1 /* timer id */ , + timer_arg); + } + run_single_wheel (&tm->single_wheel, tm->ntimers + 3); + + if (pool_elts (tm->test_elts)) + fformat (stdout, "Note: %d elements remain in pool\n", + pool_elts (tm->test_elts)); + + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + fformat(stdout, "[%d] expected to expire %d\n", + e - tm->test_elts, + e->expected_to_expire); + })); + /* *INDENT-ON* */ + + fformat (stdout, + "final wheel time %d, fast index %d\n", + tm->single_wheel.current_tick, + tm->single_wheel.current_index[TW_TIMER_RING_FAST]); + + pool_free (tm->test_elts); + tw_timer_wheel_free_2t_1w_2048sl (&tm->single_wheel); + return 0; +} + +static clib_error_t * +test1_double (tw_timer_test_main_t * tm) +{ + u32 i; + tw_timer_test_elt_t *e; + u32 offset; + + tw_timer_wheel_init_16t_2w_512sl (&tm->double_wheel, + expired_timer_double_callback, + 1.0 /* timer interval */ , ~0); + + /* + * Prime offset, to make sure that the wheel starts in a + * non-trivial position + */ + offset = 227989; + + run_double_wheel (&tm->double_wheel, offset); + + fformat (stdout, "initial wheel time %d, fast index %d\n", + tm->double_wheel.current_tick, + tm->double_wheel.current_index[TW_TIMER_RING_FAST]); + + for (i = 0; i < tm->ntimers; i++) + { + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + e->expected_to_expire = i + offset + 1; + e->stop_timer_handle = tw_timer_start_16t_2w_512sl + (&tm->double_wheel, e - tm->test_elts, 14 /* timer id */ , + i + 1); + } + run_double_wheel (&tm->double_wheel, tm->ntimers + 3); + + if (pool_elts (tm->test_elts)) + fformat (stdout, "Note: %d elements remain in pool\n", + pool_elts (tm->test_elts)); + + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + fformat(stdout, "[%d] expected to expire %d\n", + e - tm->test_elts, + e->expected_to_expire); + })); + /* *INDENT-ON* */ + + fformat (stdout, + "final wheel time %d, fast index %d\n", + tm->double_wheel.current_tick, + tm->double_wheel.current_index[TW_TIMER_RING_FAST]); + + pool_free (tm->test_elts); + tw_timer_wheel_free_16t_2w_512sl (&tm->double_wheel); + return 0; +} + +static clib_error_t * +test3_triple_double (tw_timer_test_main_t * tm) +{ + tw_timer_test_elt_t *e; + u32 initial_wheel_offset = 0; + u32 expiration_time; + u32 max_expiration_time = 0; + u32 adds = 0, deletes = 0; + f64 before, after; + + clib_time_init (&tm->clib_time); + + tw_timer_wheel_init_4t_3w_256sl (&tm->triple_wheel, + expired_timer_triple_callback, + 1.0 /* timer interval */ , ~0); + + initial_wheel_offset = 0; + run_triple_wheel (&tm->triple_wheel, initial_wheel_offset); + + fformat (stdout, + "initial wheel time %d, fi %d si %d gi %d\n", + tm->triple_wheel.current_tick, + tm->triple_wheel.current_index[TW_TIMER_RING_FAST], + tm->triple_wheel.current_index[TW_TIMER_RING_SLOW], + tm->triple_wheel.current_index[TW_TIMER_RING_GLACIER]); + + initial_wheel_offset = tm->triple_wheel.current_tick; + + fformat (stdout, "Create a timer which expires at wheel-time (1, 0, 0)\n"); + + before = clib_time_now (&tm->clib_time); + + /* Prime the pump */ + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + /* 1 glacier ring tick from now */ + expiration_time = TW_SLOTS_PER_RING * TW_SLOTS_PER_RING; + e->expected_to_expire = expiration_time + initial_wheel_offset; + max_expiration_time = expiration_time; + + e->stop_timer_handle = + tw_timer_start_4t_3w_256sl (&tm->triple_wheel, e - tm->test_elts, + 3 /* timer id */ , + expiration_time); + + run_triple_wheel (&tm->triple_wheel, max_expiration_time + 1); + + after = clib_time_now (&tm->clib_time); + + fformat (stdout, "%d adds, %d deletes, %d ticks\n", adds, deletes, + tm->triple_wheel.current_tick); + fformat (stdout, "test ran %.2f seconds, %.2f ops/second\n", + (after - before), + ((f64) adds + (f64) deletes + + (f64) tm->triple_wheel.current_tick) / (after - before)); + + if (pool_elts (tm->test_elts)) + fformat (stdout, "Note: %d elements remain in pool\n", + pool_elts (tm->test_elts)); + + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + fformat (stdout, "[%d] expected to expire %d\n", + e - tm->test_elts, + e->expected_to_expire); + })); + /* *INDENT-ON* */ + + pool_free (tm->test_elts); + tw_timer_wheel_free_4t_3w_256sl (&tm->triple_wheel); + return 0; +} + +static clib_error_t * +test4_double_double (tw_timer_test_main_t * tm) +{ + u32 i; + tw_timer_test_elt_t *e; + u32 initial_wheel_offset; + u32 expiration_time; + u32 max_expiration_time = 0; + u32 *deleted_indices = 0; + u32 adds = 0, deletes = 0; + f64 before, after; + + clib_time_init (&tm->clib_time); + + tw_timer_wheel_init_16t_2w_512sl (&tm->double_wheel, + expired_timer_double_callback, + 1.0 /* timer interval */ , ~0); + /* Prime offset */ + initial_wheel_offset = 0; + + run_double_wheel (&tm->double_wheel, initial_wheel_offset); + + fformat (stdout, "initial wheel time %d, fast index %d slow index %d\n", + tm->double_wheel.current_tick, + tm->double_wheel.current_index[TW_TIMER_RING_FAST], + tm->double_wheel.current_index[TW_TIMER_RING_SLOW]); + + initial_wheel_offset = tm->double_wheel.current_tick; + + fformat (stdout, "test timer which expires at 512 ticks\n"); + + before = clib_time_now (&tm->clib_time); + + /* Prime the pump */ + for (i = 0; i < tm->ntimers; i++) + { + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + expiration_time = 512; + + if (expiration_time > max_expiration_time) + max_expiration_time = expiration_time; + + e->expected_to_expire = expiration_time + initial_wheel_offset; + e->stop_timer_handle = + tw_timer_start_16t_2w_512sl (&tm->double_wheel, e - tm->test_elts, + 14 /* timer id */ , + expiration_time); + } + + adds = 1; + + vec_free (deleted_indices); + + run_double_wheel (&tm->double_wheel, max_expiration_time + 1); + + after = clib_time_now (&tm->clib_time); + + fformat (stdout, "%d adds, %d deletes, %d ticks\n", adds, deletes, + tm->double_wheel.current_tick); + fformat (stdout, "test ran %.2f seconds, %.2f ops/second\n", + (after - before), + ((f64) adds + (f64) deletes + + (f64) tm->double_wheel.current_tick) / (after - before)); + + if (pool_elts (tm->test_elts)) + fformat (stdout, "Note: %d elements remain in pool\n", + pool_elts (tm->test_elts)); + + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + fformat (stdout, "[%d] expected to expire %d\n", + e - tm->test_elts, + e->expected_to_expire); + })); + /* *INDENT-ON* */ + + pool_free (tm->test_elts); + tw_timer_wheel_free_16t_2w_512sl (&tm->double_wheel); + return 0; +} + +static clib_error_t * +test5_double (tw_timer_test_main_t * tm) +{ + u32 i; + tw_timer_test_elt_t *e; + u32 initial_wheel_offset; + u32 expiration_time; + u32 max_expiration_time = 0; + u32 adds = 0, deletes = 0; + f64 before, after; + + clib_time_init (&tm->clib_time); + + tw_timer_wheel_init_16t_2w_512sl (&tm->double_wheel, + expired_timer_double_callback, + 1.0 /* timer interval */ , ~0); + + /* Prime offset */ + initial_wheel_offset = 7567; + + run_double_wheel (&tm->double_wheel, initial_wheel_offset); + + fformat (stdout, "initial wheel time %d, fast index %d slow index %d\n", + tm->double_wheel.current_tick, + tm->double_wheel.current_index[TW_TIMER_RING_FAST], + tm->double_wheel.current_index[TW_TIMER_RING_SLOW]); + + initial_wheel_offset = tm->double_wheel.current_tick; + + fformat (stdout, + "test %d timers, %d iter, %d ticks per iter, 0x%llx seed\n", + tm->ntimers, tm->niter, tm->ticks_per_iter, tm->seed); + + before = clib_time_now (&tm->clib_time); + + /* Prime the pump */ + for (i = 0; i < tm->ntimers; i++) + { + pool_get (tm->test_elts, e); + memset (e, 0, sizeof (*e)); + + expiration_time = i + 1; + + if (expiration_time > max_expiration_time) + max_expiration_time = expiration_time; + + e->expected_to_expire = expiration_time + initial_wheel_offset; + e->stop_timer_handle = + tw_timer_start_16t_2w_512sl (&tm->double_wheel, e - tm->test_elts, + 14 /* timer id */ , + expiration_time); + } + + adds += i; + + run_double_wheel (&tm->double_wheel, max_expiration_time + 1); + + after = clib_time_now (&tm->clib_time); + + fformat (stdout, "%d adds, %d deletes, %d ticks\n", adds, deletes, + tm->double_wheel.current_tick); + fformat (stdout, "test ran %.2f seconds, %.2f ops/second\n", + (after - before), + ((f64) adds + (f64) deletes + + (f64) tm->double_wheel.current_tick) / (after - before)); + + if (pool_elts (tm->test_elts)) + fformat (stdout, "Note: %d elements remain in pool\n", + pool_elts (tm->test_elts)); + + /* *INDENT-OFF* */ + pool_foreach (e, tm->test_elts, + ({ + fformat (stdout, "[%d] expected to expire %d\n", + e - tm->test_elts, + e->expected_to_expire); + })); + /* *INDENT-ON* */ + + pool_free (tm->test_elts); + tw_timer_wheel_free_16t_2w_512sl (&tm->double_wheel); + return 0; +} + +static clib_error_t * +timer_test_command_fn (tw_timer_test_main_t * tm, unformat_input_t * input) +{ + + int is_test1 = 0; + int num_wheels = 1; + int is_test2 = 0; + int is_test3 = 0; + int is_test4 = 0; + int is_test5 = 0; + int overflow = 0; + + memset (tm, 0, sizeof (*tm)); + /* Default values */ + tm->ntimers = 100000; + tm->seed = 0xDEADDABEB00BFACE; + tm->niter = 1000; + tm->ticks_per_iter = 727; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "seed %lld", &tm->seed)) + ; + else if (unformat (input, "test1")) + is_test1 = 1; + else if (unformat (input, "test2")) + is_test2 = 1; + else if (unformat (input, "overflow")) + overflow = 1; + else if (unformat (input, "lebron")) + is_test3 = 1; + else if (unformat (input, "wilt")) + is_test4 = 1; + else if (unformat (input, "linear")) + is_test5 = 1; + else if (unformat (input, "wheels %d", &num_wheels)) + ; + else if (unformat (input, "ntimers %d", &tm->ntimers)) + ; + else if (unformat (input, "niter %d", &tm->niter)) + ; + else if (unformat (input, "ticks_per_iter %d", &tm->ticks_per_iter)) + ; + else + break; + } + + if (is_test1 + is_test2 + is_test3 + is_test4 + is_test5 == 0) + return clib_error_return (0, "No test specified [test1..n]"); + + if (num_wheels < 1 || num_wheels > 3) + return clib_error_return (0, "unsupported... 1 or 2 wheels only"); + + if (is_test1) + { + if (num_wheels == 1) + return test1_single (tm); + else + return test1_double (tm); + } + if (is_test2) + { + if (num_wheels == 1) + return test2_single (tm); + else if (num_wheels == 2) + return test2_double (tm); + else if (num_wheels == 3) + { + if (overflow == 0) + return test2_triple (tm); + else + return test2_triple_ov (tm); + } + } + if (is_test3) + return test3_triple_double (tm); + + if (is_test4) + return test4_double_double (tm); + + if (is_test5) + return test5_double (tm); + + /* NOTREACHED */ + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + clib_error_t *error; + tw_timer_test_main_t *tm = &tw_timer_test_main; + + clib_mem_init (0, 3ULL << 30); + + unformat_init_command_line (&i, argv); + error = timer_test_command_fn (tm, &i); + unformat_free (&i); + + if (error) + { + clib_error_report (error); + return 1; + } + return 0; +} +#endif /* CLIB_UNIX */ + +/* For debugging... */ +int +pifi (void *p, u32 index) +{ + return pool_is_free_index (p, index); +} + +u32 +vl (void *p) +{ + return vec_len (p); +} + +uword +pe (void *v) +{ + return (pool_elts (v)); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_vec.c b/src/vppinfra/test_vec.c new file mode 100644 index 00000000..f0497ac6 --- /dev/null +++ b/src/vppinfra/test_vec.c @@ -0,0 +1,1159 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + Written by Fred Delley <fdelley@cisco.com> . + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifdef CLIB_LINUX_KERNEL +#include <linux/unistd.h> +#endif + +#ifdef CLIB_UNIX +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#endif + +#include <vppinfra/clib.h> +#include <vppinfra/mheap.h> +#include <vppinfra/format.h> +#include <vppinfra/error.h> +#include <vppinfra/random.h> +#include <vppinfra/time.h> + +#include "test_vec.h" + +static int verbose; +#define if_verbose(format,args...) \ + if (verbose) { clib_warning(format, ## args); } + +#define MAX_CHANGE 100 + + +typedef enum +{ + /* Values have to be sequential and start with 0. */ + OP_IS_VEC_RESIZE = 0, + OP_IS_VEC_ADD1, + OP_IS_VEC_ADD2, + OP_IS_VEC_ADD, + OP_IS_VEC_INSERT, + OP_IS_VEC_INSERT_ELTS, + OP_IS_VEC_DELETE, + OP_IS_VEC_DUP, + OP_IS_VEC_IS_EQUAL, + OP_IS_VEC_ZERO, + OP_IS_VEC_SET, + OP_IS_VEC_VALIDATE, + OP_IS_VEC_FREE, + OP_IS_VEC_INIT, + OP_IS_VEC_CLONE, + OP_IS_VEC_APPEND, + OP_IS_VEC_PREPEND, + /* Operations on vectors with custom headers. */ + OP_IS_VEC_INIT_H, + OP_IS_VEC_RESIZE_H, + OP_IS_VEC_FREE_H, + OP_MAX, +} op_t; + +#define FIRST_VEC_OP OP_IS_VEC_RESIZE +#define LAST_VEC_OP OP_IS_VEC_PREPEND +#define FIRST_VEC_HDR_OP OP_IS_VEC_INIT_H +#define LAST_VEC_HDR_OP OP_IS_VEC_FREE_H + +uword g_prob_ratio[] = { + [OP_IS_VEC_RESIZE] = 5, + [OP_IS_VEC_ADD1] = 5, + [OP_IS_VEC_ADD2] = 5, + [OP_IS_VEC_ADD] = 5, + [OP_IS_VEC_INSERT] = 5, + [OP_IS_VEC_INSERT_ELTS] = 5, + [OP_IS_VEC_DELETE] = 30, + [OP_IS_VEC_DUP] = 5, + [OP_IS_VEC_IS_EQUAL] = 5, + [OP_IS_VEC_ZERO] = 2, + [OP_IS_VEC_SET] = 3, + [OP_IS_VEC_VALIDATE] = 5, + [OP_IS_VEC_FREE] = 5, + [OP_IS_VEC_INIT] = 5, + [OP_IS_VEC_CLONE] = 5, + [OP_IS_VEC_APPEND] = 5, + [OP_IS_VEC_PREPEND] = 5, + /* Operations on vectors with custom headers. */ + [OP_IS_VEC_INIT_H] = 5, + [OP_IS_VEC_RESIZE_H] = 5, + [OP_IS_VEC_FREE_H] = 5, +}; + +op_t *g_prob; +op_t *g_prob_wh; + +uword g_call_stats[OP_MAX]; + + +/* A structure for both vector headers and vector elements might be useful to + uncover potential alignement issues. */ + +typedef struct +{ + u8 field1[4]; + CLIB_PACKED (u32 field2); +} hdr_t; + +typedef struct +{ + u8 field1[3]; + CLIB_PACKED (u32 field2); +} elt_t; + +#ifdef CLIB_UNIX +u32 g_seed = 0xdeadbabe; +uword g_verbose = 1; +#endif + +op_t *g_op_prob; +uword g_set_verbose_at = ~0; +uword g_dump_period = ~0; + + +static u8 * +format_vec_op_type (u8 * s, va_list * args) +{ + op_t op = va_arg (*args, int); + + switch (op) + { +#define _(n) \ + case OP_IS_##n: \ + s = format (s, "OP_IS_" #n); \ + break; + + _(VEC_RESIZE); + _(VEC_ADD1); + _(VEC_ADD2); + _(VEC_ADD); + _(VEC_INSERT); + _(VEC_INSERT_ELTS); + _(VEC_DELETE); + _(VEC_DUP); + _(VEC_IS_EQUAL); + _(VEC_ZERO); + _(VEC_SET); + _(VEC_VALIDATE); + _(VEC_FREE); + _(VEC_INIT); + _(VEC_CLONE); + _(VEC_APPEND); + _(VEC_PREPEND); + _(VEC_INIT_H); + _(VEC_RESIZE_H); + _(VEC_FREE_H); + + default: + s = format (s, "Unknown vec op (%d)", op); + break; + } + +#undef _ + + return s; +} + +static void +dump_call_stats (uword * stats) +{ + uword i; + + fformat (stdout, "Call Stats\n----------\n"); + + for (i = 0; i < OP_MAX; i++) + fformat (stdout, "%-8d %U\n", stats[i], format_vec_op_type, i); +} + + +/* XXX - Purposely low value for debugging the validator. Will be set it to a + more sensible value later. */ +#define MAX_VEC_LEN 10 + +#define create_random_vec_wh(elt_type, len, hdr_bytes, seed) \ +({ \ + elt_type * _v(v) = NULL; \ + uword _v(l) = (len); \ + uword _v(h) = (hdr_bytes); \ + u8 * _v(hdr); \ + \ + if (_v(l) == 0) \ + goto __done__; \ + \ + /* ~0 means select random length between 0 and MAX_VEC_LEN. */ \ + if (_v(l) == ~0) \ + _v(l) = bounded_random_u32 (&(seed), 0, MAX_VEC_LEN); \ + \ + _v(v) = _vec_resize (NULL, _v(l), _v(l) * sizeof (elt_type), _v(h), 0); \ + fill_with_random_data (_v(v), vec_bytes (_v(v)), (seed)); \ + \ + /* Fill header with random data as well. */ \ + if (_v(h) > 0) \ + { \ + _v(hdr) = vec_header (_v(v), _v(h)); \ + fill_with_random_data (_v(hdr), _v(h), (seed)); \ + } \ + \ +__done__: \ + _v(v); \ +}) + +#define create_random_vec(elt_type, len, seed) \ +create_random_vec_wh (elt_type, len, 0, seed) + +#define compute_vec_hash(hash, vec) \ +({ \ + u8 * _v(v) = (u8 *) (vec); \ + uword _v(n) = vec_len (vec) * sizeof ((vec)[0]); \ + u8 _v(hh) = (u8) (hash); \ + \ + compute_mem_hash (_v(hh), _v(v), _v(n)); \ +}) + +static elt_t * +validate_vec_free (elt_t * vec) +{ + vec_free (vec); + ASSERT (vec == NULL); + return vec; +} + +static elt_t * +validate_vec_free_h (elt_t * vec, uword hdr_bytes) +{ + vec_free_h (vec, hdr_bytes); + ASSERT (vec == NULL); + return vec; +} + +static void +validate_vec_hdr (elt_t * vec, uword hdr_bytes) +{ + u8 *hdr; + u8 *hdr_end; + vec_header_t *vh; + + if (!vec) + return; + + vh = _vec_find (vec); + hdr = vec_header (vec, hdr_bytes); + hdr_end = vec_header_end (hdr, hdr_bytes); + + ASSERT (hdr_end == (u8 *) vec); + ASSERT ((u8 *) vh - (u8 *) hdr >= hdr_bytes); +} + +static void +validate_vec_len (elt_t * vec) +{ + u8 *ptr; + u8 *end; + uword len; + uword bytes; + uword i; + elt_t *elt; + + if (!vec) + return; + + ptr = (u8 *) vec; + end = (u8 *) vec_end (vec); + len = vec_len (vec); + bytes = sizeof (vec[0]) * len; + + ASSERT (bytes == vec_bytes (vec)); + ASSERT ((ptr + bytes) == end); + + i = 0; + + /* XXX - TODO: confirm that auto-incrementing in vec_is_member() would not + have the expected result. */ + while (vec_is_member (vec, (__typeof__ (vec[0]) *) ptr)) + { + ptr++; + i++; + } + + ASSERT (ptr == end); + ASSERT (i == bytes); + + i = 0; + + vec_foreach (elt, vec) i++; + + ASSERT (i == len); +} + +static void +validate_vec (elt_t * vec, uword hdr_bytes) +{ + validate_vec_hdr (vec, hdr_bytes); + validate_vec_len (vec); + + if (!vec || vec_len (vec) == 0) + { + VERBOSE3 ("Vector at %p has zero elements.\n\n", vec); + } + else + { + if (hdr_bytes > 0) + VERBOSE3 ("Header: %U\n", + format_hex_bytes, vec_header (vec, sizeof (vec[0])), + sizeof (vec[0])); + + VERBOSE3 ("%U\n\n", + format_hex_bytes, vec, vec_len (vec) * sizeof (vec[0])); + } +} + +static elt_t * +validate_vec_resize (elt_t * vec, uword num_elts) +{ + uword len1 = vec_len (vec); + uword len2; + u8 hash = compute_vec_hash (0, vec); + + vec_resize (vec, num_elts); + len2 = vec_len (vec); + + ASSERT (len2 == len1 + num_elts); + ASSERT (compute_vec_hash (hash, vec) == 0); + validate_vec (vec, 0); + return vec; +} + +static elt_t * +validate_vec_resize_h (elt_t * vec, uword num_elts, uword hdr_bytes) +{ + uword len1, len2; + u8 *end1, *end2; + u8 *hdr = NULL; + u8 hash, hdr_hash; + + len1 = vec_len (vec); + + if (vec) + hdr = vec_header (vec, hdr_bytes); + + hash = compute_vec_hash (0, vec); + hdr_hash = compute_mem_hash (0, hdr, hdr_bytes); + + vec_resize_ha (vec, num_elts, hdr_bytes, 0); + len2 = vec_len (vec); + + ASSERT (len2 == len1 + num_elts); + + end1 = (u8 *) (vec + len1); + end2 = (u8 *) vec_end (vec); + + while (end1 != end2) + { + ASSERT (*end1 == 0); + end1++; + } + + if (vec) + hdr = vec_header (vec, hdr_bytes); + + ASSERT (compute_vec_hash (hash, vec) == 0); + ASSERT (compute_mem_hash (hdr_hash, hdr, hdr_bytes) == 0); + validate_vec (vec, 1); + return vec; +} + +static elt_t * +generic_validate_vec_add (elt_t * vec, uword num_elts, uword is_add2) +{ + uword len1 = vec_len (vec); + uword len2; + u8 hash = compute_vec_hash (0, vec); + elt_t *new; + + if (is_add2) + { + vec_add2 (vec, new, num_elts); + } + else + { + new = create_random_vec (elt_t, num_elts, g_seed); + + VERBOSE3 ("%U\n", format_hex_bytes, new, + vec_len (new) * sizeof (new[0])); + + /* Add the hash value of the new elements to that of the old vector. */ + hash = compute_vec_hash (hash, new); + + if (num_elts == 1) + vec_add1 (vec, new[0]); + else if (num_elts > 1) + vec_add (vec, new, num_elts); + + vec_free (new); + } + + len2 = vec_len (vec); + ASSERT (len2 == len1 + num_elts); + + ASSERT (compute_vec_hash (hash, vec) == 0); + validate_vec (vec, 0); + return vec; +} + +static elt_t * +validate_vec_add1 (elt_t * vec) +{ + return generic_validate_vec_add (vec, 1, 0); +} + +static elt_t * +validate_vec_add2 (elt_t * vec, uword num_elts) +{ + return generic_validate_vec_add (vec, num_elts, 1); +} + +static elt_t * +validate_vec_add (elt_t * vec, uword num_elts) +{ + return generic_validate_vec_add (vec, num_elts, 0); +} + +static elt_t * +validate_vec_insert (elt_t * vec, uword num_elts, uword start_elt) +{ + uword len1 = vec_len (vec); + uword len2; + u8 hash; + + /* vec_insert() would not handle it properly. */ + if (start_elt > len1 || num_elts == 0) + return vec; + + hash = compute_vec_hash (0, vec); + vec_insert (vec, num_elts, start_elt); + len2 = vec_len (vec); + + ASSERT (len2 == len1 + num_elts); + ASSERT (compute_vec_hash (hash, vec) == 0); + validate_vec (vec, 0); + return vec; +} + +static elt_t * +validate_vec_insert_elts (elt_t * vec, uword num_elts, uword start_elt) +{ + uword len1 = vec_len (vec); + uword len2; + elt_t *new; + u8 hash; + + /* vec_insert_elts() would not handle it properly. */ + if (start_elt > len1 || num_elts == 0) + return vec; + + new = create_random_vec (elt_t, num_elts, g_seed); + + VERBOSE3 ("%U\n", format_hex_bytes, new, vec_len (new) * sizeof (new[0])); + + /* Add the hash value of the new elements to that of the old vector. */ + hash = compute_vec_hash (0, vec); + hash = compute_vec_hash (hash, new); + + vec_insert_elts (vec, new, num_elts, start_elt); + len2 = vec_len (vec); + + vec_free (new); + + ASSERT (len2 == len1 + num_elts); + ASSERT (compute_vec_hash (hash, vec) == 0); + validate_vec (vec, 0); + return vec; +} + +static elt_t * +validate_vec_delete (elt_t * vec, uword num_elts, uword start_elt) +{ + uword len1 = vec_len (vec); + uword len2; + u8 *start; + u8 hash; + u8 hash_del; + + /* vec_delete() would not handle it properly. */ + if (start_elt + num_elts > len1) + return vec; + + start = (u8 *) vec + (start_elt * sizeof (vec[0])); + + hash = compute_vec_hash (0, vec); + hash_del = compute_mem_hash (0, start, num_elts * sizeof (vec[0])); + hash ^= hash_del; + + vec_delete (vec, num_elts, start_elt); + len2 = vec_len (vec); + + ASSERT (len2 == len1 - num_elts); + ASSERT (compute_vec_hash (hash, vec) == 0); + validate_vec (vec, 0); + return vec; +} + +static elt_t * +validate_vec_dup (elt_t * vec) +{ + elt_t *new; + u8 hash; + + hash = compute_vec_hash (0, vec); + new = vec_dup (vec); + + ASSERT (compute_vec_hash (hash, new) == 0); + + validate_vec (new, 0); + return new; +} + +static elt_t * +validate_vec_zero (elt_t * vec) +{ + u8 *ptr; + u8 *end; + + vec_zero (vec); + + ptr = (u8 *) vec; + end = (u8 *) (vec + vec_len (vec)); + + while (ptr != end) + { + ASSERT (ptr < (u8 *) vec_end (vec)); + ASSERT (ptr[0] == 0); + ptr++; + } + + validate_vec (vec, 0); + return vec; +} + +static void +validate_vec_is_equal (elt_t * vec) +{ + elt_t *new = NULL; + + if (vec_len (vec) <= 0) + return; + + new = vec_dup (vec); + ASSERT (vec_is_equal (new, vec)); + vec_free (new); +} + +static elt_t * +validate_vec_set (elt_t * vec) +{ + uword i; + uword len = vec_len (vec); + elt_t *new; + + if (!vec) + return NULL; + + new = create_random_vec (elt_t, 1, g_seed); + + VERBOSE3 ("%U\n", format_hex_bytes, new, vec_len (new) * sizeof (new[0])); + + vec_set (vec, new[0]); + + for (i = 0; i < len; i++) + ASSERT (memcmp (&vec[i], &new[0], sizeof (vec[0])) == 0); + + vec_free (new); + validate_vec (vec, 0); + return vec; +} + +static elt_t * +validate_vec_validate (elt_t * vec, uword index) +{ + uword len = vec_len (vec); + word num_new = index - len + 1; + u8 *ptr; + u8 *end; + u8 hash = compute_vec_hash (0, vec); + + if (num_new < 0) + num_new = 0; + + vec_validate (vec, index); + + /* Old len but new vec pointer! */ + ptr = (u8 *) (vec + len); + end = (u8 *) (vec + len + num_new); + + ASSERT (len + num_new == vec_len (vec)); + ASSERT (compute_vec_hash (hash, vec) == 0); + + while (ptr != end) + { + ASSERT (ptr < (u8 *) vec_end (vec)); + ASSERT (ptr[0] == 0); + ptr++; + } + + validate_vec (vec, 0); + return vec; +} + +static elt_t * +validate_vec_init (uword num_elts) +{ + u8 *ptr; + u8 *end; + uword len; + elt_t *new; + + new = vec_new (elt_t, num_elts); + len = vec_len (new); + + ASSERT (len == num_elts); + + ptr = (u8 *) new; + end = (u8 *) (new + len); + + while (ptr != end) + { + ASSERT (ptr < (u8 *) vec_end (new)); + ASSERT (ptr[0] == 0); + ptr++; + } + + validate_vec (new, 0); + return new; +} + +static elt_t * +validate_vec_init_h (uword num_elts, uword hdr_bytes) +{ + uword i = 0; + u8 *ptr; + u8 *end; + uword len; + elt_t *new; + + new = vec_new_ha (elt_t, num_elts, hdr_bytes, 0); + len = vec_len (new); + + ASSERT (len == num_elts); + + /* We have 2 zero-regions to check: header & vec data (skip _VEC struct). */ + for (i = 0; i < 2; i++) + { + if (i == 0) + { + ptr = (u8 *) vec_header (new, hdr_bytes); + end = ptr + hdr_bytes; + } + else + { + ptr = (u8 *) new; + end = (u8 *) (new + len); + } + + while (ptr != end) + { + ASSERT (ptr < (u8 *) vec_end (new)); + ASSERT (ptr[0] == 0); + ptr++; + } + } + + validate_vec (new, 1); + return new; +} + +/* XXX - I don't understand the purpose of the vec_clone() call. */ +static elt_t * +validate_vec_clone (elt_t * vec) +{ + elt_t *new; + + vec_clone (new, vec); + + ASSERT (vec_len (new) == vec_len (vec)); + ASSERT (compute_vec_hash (0, new) == 0); + validate_vec (new, 0); + return new; +} + +static elt_t * +validate_vec_append (elt_t * vec) +{ + elt_t *new; + uword num_elts = bounded_random_u32 (&g_seed, 0, MAX_CHANGE); + uword len; + u8 hash = 0; + + new = create_random_vec (elt_t, num_elts, g_seed); + + len = vec_len (vec) + vec_len (new); + hash = compute_vec_hash (0, vec); + hash = compute_vec_hash (hash, new); + + vec_append (vec, new); + vec_free (new); + + ASSERT (vec_len (vec) == len); + ASSERT (compute_vec_hash (hash, vec) == 0); + validate_vec (vec, 0); + return vec; +} + +static elt_t * +validate_vec_prepend (elt_t * vec) +{ + elt_t *new; + uword num_elts = bounded_random_u32 (&g_seed, 0, MAX_CHANGE); + uword len; + u8 hash = 0; + + new = create_random_vec (elt_t, num_elts, g_seed); + + len = vec_len (vec) + vec_len (new); + hash = compute_vec_hash (0, vec); + hash = compute_vec_hash (hash, new); + + vec_prepend (vec, new); + vec_free (new); + + ASSERT (vec_len (vec) == len); + ASSERT (compute_vec_hash (hash, vec) == 0); + validate_vec (vec, 0); + return vec; +} + +static void +run_validator_wh (uword iter) +{ + elt_t *vec; + uword i; + uword op; + uword num_elts; + uword len; + uword dump_time; + f64 time[3]; /* [0]: start, [1]: last, [2]: current */ + + vec = create_random_vec_wh (elt_t, ~0, sizeof (hdr_t), g_seed); + validate_vec (vec, 0); + VERBOSE2 ("Start with len %d\n", vec_len (vec)); + + time[0] = unix_time_now (); + time[1] = time[0]; + dump_time = g_dump_period; + + for (i = 1; i <= iter; i++) + { + if (i >= g_set_verbose_at) + g_verbose = 2; + + op = bounded_random_u32 (&g_seed, 0, vec_len (g_prob_wh) - 1); + op = g_prob_wh[op]; + + switch (op) + { + case OP_IS_VEC_INIT_H: + num_elts = bounded_random_u32 (&g_seed, 0, MAX_CHANGE); + vec_free_h (vec, sizeof (hdr_t)); + VERBOSE2 ("vec_init_h(), new elts %d\n", num_elts); + vec = validate_vec_init_h (num_elts, sizeof (hdr_t)); + break; + + case OP_IS_VEC_RESIZE_H: + len = vec_len (vec); + num_elts = bounded_random_u32 (&g_seed, len, len + MAX_CHANGE); + VERBOSE2 ("vec_resize_h(), %d new elts.\n", num_elts); + vec = validate_vec_resize_h (vec, num_elts, sizeof (hdr_t)); + break; + + case OP_IS_VEC_FREE_H: + VERBOSE2 ("vec_free_h()\n"); + vec = validate_vec_free_h (vec, sizeof (hdr_t)); + break; + + default: + ASSERT (0); + break; + } + + g_call_stats[op]++; + + if (i == dump_time) + { + time[2] = unix_time_now (); + VERBOSE1 ("%d vec ops in %f secs. (last %d in %f secs.).\n", + i, time[2] - time[0], g_dump_period, time[2] - time[1]); + time[1] = time[2]; + dump_time += g_dump_period; + + VERBOSE1 ("vec len %d\n", vec_len (vec)); + VERBOSE2 ("%U\n\n", + format_hex_bytes, vec, vec_len (vec) * sizeof (vec[0])); + } + + VERBOSE2 ("len %d\n", vec_len (vec)); + } + + validate_vec (vec, sizeof (hdr_t)); + vec_free_h (vec, sizeof (hdr_t)); +} + +static void +run_validator (uword iter) +{ + elt_t *vec; + elt_t *new; + uword i; + uword op; + uword num_elts; + uword index; + uword len; + uword dump_time; + f64 time[3]; /* [0]: start, [1]: last, [2]: current */ + + vec = create_random_vec (elt_t, ~0, g_seed); + validate_vec (vec, 0); + VERBOSE2 ("Start with len %d\n", vec_len (vec)); + + time[0] = unix_time_now (); + time[1] = time[0]; + dump_time = g_dump_period; + + for (i = 1; i <= iter; i++) + { + if (i >= g_set_verbose_at) + g_verbose = 2; + + op = bounded_random_u32 (&g_seed, 0, vec_len (g_prob) - 1); + op = g_prob[op]; + + switch (op) + { + case OP_IS_VEC_RESIZE: + len = vec_len (vec); + num_elts = bounded_random_u32 (&g_seed, len, len + MAX_CHANGE); + VERBOSE2 ("vec_resize(), %d new elts.\n", num_elts); + vec = validate_vec_resize (vec, num_elts); + break; + + case OP_IS_VEC_ADD1: + VERBOSE2 ("vec_add1()\n"); + vec = validate_vec_add1 (vec); + break; + + case OP_IS_VEC_ADD2: + num_elts = bounded_random_u32 (&g_seed, 0, MAX_CHANGE); + VERBOSE2 ("vec_add2(), %d new elts.\n", num_elts); + vec = validate_vec_add2 (vec, num_elts); + break; + + case OP_IS_VEC_ADD: + num_elts = bounded_random_u32 (&g_seed, 0, MAX_CHANGE); + VERBOSE2 ("vec_add(), %d new elts.\n", num_elts); + vec = validate_vec_add (vec, num_elts); + break; + + case OP_IS_VEC_INSERT: + len = vec_len (vec); + num_elts = bounded_random_u32 (&g_seed, 0, MAX_CHANGE); + index = bounded_random_u32 (&g_seed, 0, + (len > 0) ? (len - 1) : (0)); + VERBOSE2 ("vec_insert(), %d new elts, index %d.\n", num_elts, + index); + vec = validate_vec_insert (vec, num_elts, index); + break; + + case OP_IS_VEC_INSERT_ELTS: + len = vec_len (vec); + num_elts = bounded_random_u32 (&g_seed, 0, MAX_CHANGE); + index = bounded_random_u32 (&g_seed, 0, + (len > 0) ? (len - 1) : (0)); + VERBOSE2 ("vec_insert_elts(), %d new elts, index %d.\n", + num_elts, index); + vec = validate_vec_insert_elts (vec, num_elts, index); + break; + + case OP_IS_VEC_DELETE: + len = vec_len (vec); + index = bounded_random_u32 (&g_seed, 0, len - 1); + num_elts = bounded_random_u32 (&g_seed, 0, + (len > index) ? (len - index) : (0)); + VERBOSE2 ("vec_delete(), %d elts, index %d.\n", num_elts, index); + vec = validate_vec_delete (vec, num_elts, index); + break; + + case OP_IS_VEC_DUP: + VERBOSE2 ("vec_dup()\n"); + new = validate_vec_dup (vec); + vec_free (new); + break; + + case OP_IS_VEC_IS_EQUAL: + VERBOSE2 ("vec_is_equal()\n"); + validate_vec_is_equal (vec); + break; + + case OP_IS_VEC_ZERO: + VERBOSE2 ("vec_zero()\n"); + vec = validate_vec_zero (vec); + break; + + case OP_IS_VEC_SET: + VERBOSE2 ("vec_set()\n"); + vec = validate_vec_set (vec); + break; + + case OP_IS_VEC_VALIDATE: + len = vec_len (vec); + index = bounded_random_u32 (&g_seed, 0, len - 1 + MAX_CHANGE); + VERBOSE2 ("vec_validate(), index %d\n", index); + vec = validate_vec_validate (vec, index); + break; + + case OP_IS_VEC_FREE: + VERBOSE2 ("vec_free()\n"); + vec = validate_vec_free (vec); + break; + + case OP_IS_VEC_INIT: + num_elts = bounded_random_u32 (&g_seed, 0, MAX_CHANGE); + vec_free (vec); + VERBOSE2 ("vec_init(), new elts %d\n", num_elts); + vec = validate_vec_init (num_elts); + break; + + case OP_IS_VEC_CLONE: + VERBOSE2 ("vec_clone()\n"); + new = validate_vec_clone (vec); + vec_free (new); + break; + + case OP_IS_VEC_APPEND: + VERBOSE2 ("vec_append()\n"); + vec = validate_vec_append (vec); + break; + + case OP_IS_VEC_PREPEND: + VERBOSE2 ("vec_prepend()\n"); + vec = validate_vec_prepend (vec); + break; + + default: + ASSERT (0); + break; + } + + g_call_stats[op]++; + + if (i == dump_time) + { + time[2] = unix_time_now (); + VERBOSE1 ("%d vec ops in %f secs. (last %d in %f secs.).\n", + i, time[2] - time[0], g_dump_period, time[2] - time[1]); + time[1] = time[2]; + dump_time += g_dump_period; + + VERBOSE1 ("vec len %d\n", vec_len (vec)); + VERBOSE2 ("%U\n\n", + format_hex_bytes, vec, vec_len (vec) * sizeof (vec[0])); + } + + VERBOSE2 ("len %d\n", vec_len (vec)); + } + + validate_vec (vec, 0); + vec_free (vec); +} + +static void +prob_init (void) +{ + uword i, j, ratio, len, index; + + /* Create the vector to implement the statistical profile: + vec [ op1 op1 op1 op2 op3 op3 op3 op4 op4 .... ] */ + for (i = FIRST_VEC_OP; i <= LAST_VEC_OP; i++) + { + ratio = g_prob_ratio[i]; + if (ratio <= 0) + continue; + + len = vec_len (g_prob); + index = len - 1 + ratio; + ASSERT (index >= 0); + + /* Pre-allocate new elements. */ + vec_validate (g_prob, index); + + for (j = len; j <= index; j++) + g_prob[j] = i; + } + + /* Operations on vectors with headers. */ + for (i = FIRST_VEC_HDR_OP; i <= LAST_VEC_HDR_OP; i++) + { + ratio = g_prob_ratio[i]; + if (ratio <= 0) + continue; + + len = vec_len (g_prob_wh); + index = len - 1 + ratio; + ASSERT (index >= 0); + + /* Pre-allocate new elements. */ + vec_validate (g_prob_wh, index); + + for (j = len; j <= index; j++) + g_prob_wh[j] = i; + } + + VERBOSE3 ("prob_vec, len %d\n%U\n", vec_len (g_prob), + format_hex_bytes, g_prob, vec_len (g_prob) * sizeof (g_prob[0])); + VERBOSE3 ("prob_vec_wh, len %d\n%U\n", vec_len (g_prob_wh), + format_hex_bytes, g_prob_wh, + vec_len (g_prob_wh) * sizeof (g_prob_wh[0])); +} + +static void +prob_free (void) +{ + vec_free (g_prob); + vec_free (g_prob_wh); +} + +int +test_vec_main (unformat_input_t * input) +{ + uword iter = 1000; + uword help = 0; + uword big = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (0 == unformat (input, "iter %d", &iter) + && 0 == unformat (input, "seed %d", &g_seed) + && 0 == unformat (input, "verbose %d", &g_verbose) + && 0 == unformat (input, "set %d", &g_set_verbose_at) + && 0 == unformat (input, "dump %d", &g_dump_period) + && 0 == unformat (input, "help %=", &help, 1) + && 0 == unformat (input, "big %=", &big, 1)) + { + clib_error ("unknown input `%U'", format_unformat_error, input); + goto usage; + } + } + + if (big) + { + u8 *bigboy = 0; + u64 one_gig = (1 << 30); + u64 size; + u64 index; + + fformat (stdout, "giant vector test..."); + size = 5ULL * one_gig; + + vec_validate (bigboy, size); + + for (index = size; index >= 0; index--) + bigboy[index] = index & 0xff; + return 0; + } + + + if (help) + goto usage; + + prob_init (); + run_validator (iter); + run_validator_wh (iter); + if (verbose) + dump_call_stats (g_call_stats); + prob_free (); + + if (verbose) + { + memory_snap (); + } + return 0; + +usage: + fformat (stdout, "Usage: test_vec iter <N> seed <N> verbose <N> " + "set <N> dump <N>\n"); + if (help) + return 0; + + return -1; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + mheap_alloc (0, (uword) 10ULL << 30); + + verbose = (argc > 1); + unformat_init_command_line (&i, argv); + ret = test_vec_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_vec.h b/src/vppinfra/test_vec.h new file mode 100644 index 00000000..28e8e2a0 --- /dev/null +++ b/src/vppinfra/test_vec.h @@ -0,0 +1,243 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_test_vec_h +#define included_test_vec_h + + +#include <vppinfra/clib.h> +#include <vppinfra/mem.h> +#include <vppinfra/format.h> +#include <vppinfra/error.h> + + +extern uword g_verbose; +extern u32 g_seed; + +always_inline u8 * +format_u32_binary (u8 * s, va_list * va) +{ + u32 val = va_arg (*va, u32); + word i = 0; + + for (i = BITS (val) - 1; i >= 0; i--) + { + if (val & (1 << i)) + s = format (s, "1"); + else + s = format (s, "0"); + } + + return s; +} + +#define VERBOSE1(fmt, args...) \ +do { \ + if (g_verbose >= 1) \ + fformat (stdout, fmt, ## args); \ +} while (0) + +#define VERBOSE2(fmt, args...) \ +do { \ + if (g_verbose >= 2) \ + fformat (stdout, fmt, ## args); \ +} while (0) + +#define VERBOSE3(fmt, args...) \ +do { \ + if (g_verbose >= 3) \ + fformat (stdout, fmt, ## args); \ +} while (0) + +#define clib_mem_free_safe(p) \ +do { \ + if (p) \ + { \ + clib_mem_free (p); \ + (p) = NULL; \ + } \ +} while (0) + +/* XXX - I get undefined symbol trying to call random_u32() <vppinfra/random.h> */ +/* Simple random number generator with period 2^31 - 1. */ +static u32 +my_random_u32 (u32 * seed_return) +{ + /* Unlikely mask value to XOR into seed. + Otherwise small seed values would give + non-random seeming smallish numbers. */ + const u32 mask = 0x12345678; + u32 seed, a, b, result; + + seed = *seed_return; + seed ^= mask; + + a = seed / 127773; + b = seed % 127773; + seed = 16807 * b - 2836 * a; + + if ((i32) seed < 0) + seed += ((u32) 1 << 31) - 1; + + result = seed; + + *seed_return = seed ^ mask; + + return result; +} + +static u32 +bounded_random_u32 (u32 * seed, uword lo, uword hi) +{ + if (lo == hi) + return lo; + + ASSERT (lo < hi); + + return ((my_random_u32 (seed) % (hi - lo + ((hi != ~0) ? (1) : (0)))) + lo); +} + +#define fill_with_random_data(ptr, bytes, seed) \ +do { \ + u8 * _v(p) = (u8 *) (ptr); \ + uword _v(b) = (bytes); \ + uword _v(i); \ + \ + for (_v(i) = 0; _v(i) < _v(b); _v(i)++) \ + _v(p)[_v(i)] = (u8) bounded_random_u32 (&(seed), 0, 255); \ + \ +} while (0) + +#define compute_mem_hash(hash, ptr, bytes) \ +({ \ + u8 * _v(p) = (u8 *) (ptr); \ + uword _v(b) = (uword) (bytes); \ + uword _v(i); \ + uword _v(h) = (u8) (hash); \ + \ + if (_v(p) && _v(b) > 0) \ + { \ + for (_v(i) = 0; _v(i) < _v(b); _v(i)++) \ + _v(h) ^= _v(p)[_v(i)]; \ + } \ + \ + _v(h); \ +}) + +#define log2_align_down(value, align) \ +({ \ + uword _v = (uword) (value); \ + uword _a = (uword) (align); \ + uword _m = (1 << _a) - 1; \ + \ + _v = _v & ~_m; \ +}) + +#define log2_align_up(value, align) \ +({ \ + uword _v = (uword) (value); \ + uword _a = (uword) (align); \ + uword _m = (1 << _a) - 1; \ + \ + _v = (_v + _m) & ~_m; \ +}) + +#define log2_align_ptr_down(ptr, align) \ +uword_to_pointer (log2_align_down (pointer_to_uword (ptr), align), void *) + +#define log2_align_ptr_up(ptr, align) \ +uword_to_pointer (log2_align_up (pointer_to_uword (ptr), align), void *) + +#define MAX_LOG2_ALIGN 6 +#define MAX_UNALIGN_OFFSET ((1 << MAX_LOG2_ALIGN) - 1) + +/* Allocates pointer to memory whose address is: + addr = <log2_align>-aligned address */ +always_inline void * +alloc_aligned (uword size, uword log2_align, void **ptr_to_free) +{ + void *p; + + if (size <= 0) + return NULL; + + p = (void *) clib_mem_alloc (size + (1 << log2_align) - 1); + + if (ptr_to_free) + *ptr_to_free = p; + + return (p) ? log2_align_ptr_up (p, log2_align) : (NULL); +} + +/* Allocates pointer to memory whose address is: + addr = MAX_LOG2_ALIGN-aligned address + <offset> */ +always_inline void * +alloc_unaligned (uword size, uword offset, void **ptr_to_free) +{ + void *p; + + if (size <= 0) + return NULL; + + ASSERT (offset <= MAX_UNALIGN_OFFSET); + + p = + alloc_aligned (size + (1 << MAX_LOG2_ALIGN), MAX_LOG2_ALIGN, ptr_to_free); + + if (!p) + return NULL; + + return (void *) ((u8 *) p + (offset % MAX_UNALIGN_OFFSET)); +} + +#define memory_snap() \ +do { \ + clib_mem_usage_t _usage = { 0 }; \ + clib_mem_usage (&_usage); \ + fformat (stdout, "%U\n", format_clib_mem_usage, _usage, 0); \ +} while (0) + + +#endif /* included_test_vec_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_vhash.c b/src/vppinfra/test_vhash.c new file mode 100644 index 00000000..7293fdde --- /dev/null +++ b/src/vppinfra/test_vhash.c @@ -0,0 +1,757 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2010 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#if 0 +#ifdef __OPTIMIZE__ +#undef CLIB_DEBUG +#endif +#endif + +#include <vppinfra/bitmap.h> +#include <vppinfra/error.h> +#include <vppinfra/os.h> +#include <vppinfra/random.h> +#include <vppinfra/time.h> +#include <vppinfra/vhash.h> + +#ifdef CLIB_HAVE_VEC128 + +typedef struct +{ + u32 n_iter; + u32 seed; + u32 verbose; + u32 n_keys; + u32 log2_size; + u32 n_key_u32; + + u32 n_vectors_div_4; + u32 n_vectors_mod_4; + + u32 *keys; + u32 *results; + + u32 *vhash_get_key_indices; + u32 *vhash_get_results; + + u32 *vhash_key_indices; + u32 *vhash_results; + + vhash_t vhash; + + uword **key_hash; + + struct + { + u64 n_clocks; + u64 n_vectors; + u64 n_calls; + } get_stats, set_stats, unset_stats; +} test_vhash_main_t; + +always_inline u32 +test_vhash_key_gather (void *_tm, u32 vi, u32 wi, u32 n_key_u32s) +{ + test_vhash_main_t *tm = _tm; + ASSERT (n_key_u32s == tm->n_key_u32); + ASSERT (wi < n_key_u32s); + vi = vec_elt (tm->vhash_key_indices, vi); + return vec_elt (tm->keys, vi * n_key_u32s + wi); +} + +always_inline u32x4 +test_vhash_4key_gather (void *_tm, u32 vi, u32 wi, u32 n_key_u32s) +{ + test_vhash_main_t *tm = _tm; + u32 *p; + u32x4_union_t x; + + ASSERT (n_key_u32s == tm->n_key_u32); + ASSERT (wi < n_key_u32s); + + p = vec_elt_at_index (tm->vhash_key_indices, vi + 0); + x.as_u32[0] = tm->keys[p[0] * n_key_u32s + wi]; + x.as_u32[1] = tm->keys[p[1] * n_key_u32s + wi]; + x.as_u32[2] = tm->keys[p[2] * n_key_u32s + wi]; + x.as_u32[3] = tm->keys[p[3] * n_key_u32s + wi]; + return x.as_u32x4; +} + +always_inline u32 +test_vhash_get_result (void *_tm, + u32 vector_index, u32 result_index, u32 n_key_u32s) +{ + test_vhash_main_t *tm = _tm; + u32 *p = vec_elt_at_index (tm->vhash_results, vector_index); + p[0] = result_index; + return result_index; +} + +always_inline u32x4 +test_vhash_get_4result (void *_tm, + u32 vector_index, u32x4 results, u32 n_key_u32s) +{ + test_vhash_main_t *tm = _tm; + u32 *p = vec_elt_at_index (tm->vhash_results, vector_index); + *(u32x4 *) p = results; + return results; +} + +always_inline u32 +test_vhash_set_result (void *_tm, + u32 vector_index, u32 old_result, u32 n_key_u32s) +{ + test_vhash_main_t *tm = _tm; + u32 *p = vec_elt_at_index (tm->vhash_results, vector_index); + u32 new_result = p[0]; + p[0] = old_result; + return new_result; +} + +always_inline u32 +test_vhash_unset_result (void *_tm, u32 i, u32 old_result, u32 n_key_u32s) +{ + test_vhash_main_t *tm = _tm; + u32 *p = vec_elt_at_index (tm->vhash_results, i); + p[0] = old_result; + return 0; +} + +#define _(N_KEY_U32) \ + always_inline u32 \ + test_vhash_key_gather_##N_KEY_U32 (void * _tm, u32 vi, u32 i) \ + { return test_vhash_key_gather (_tm, vi, i, N_KEY_U32); } \ + \ + always_inline u32x4 \ + test_vhash_key_gather_4_##N_KEY_U32 (void * _tm, u32 vi, u32 i) \ + { return test_vhash_4key_gather (_tm, vi, i, N_KEY_U32); } \ + \ + clib_pipeline_stage \ + (test_vhash_gather_keys_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_gather_4key_stage \ + (&tm->vhash, \ + /* vector_index */ i, \ + test_vhash_key_gather_4_##N_KEY_U32, \ + tm, \ + N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (test_vhash_gather_keys_mod_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_gather_key_stage \ + (&tm->vhash, \ + /* vector_index */ tm->n_vectors_div_4, \ + /* n_vectors */ tm->n_vectors_mod_4, \ + test_vhash_key_gather_##N_KEY_U32, \ + tm, \ + N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage \ + (test_vhash_hash_finalize_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_finalize_stage (&tm->vhash, i, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (test_vhash_hash_finalize_mod_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_finalize_stage (&tm->vhash, tm->n_vectors_div_4, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage \ + (test_vhash_get_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_get_4_stage (&tm->vhash, \ + /* vector_index */ i, \ + test_vhash_get_4result, \ + tm, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (test_vhash_get_mod_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_get_stage (&tm->vhash, \ + /* vector_index */ tm->n_vectors_div_4, \ + /* n_vectors */ tm->n_vectors_mod_4, \ + test_vhash_get_result, \ + tm, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage \ + (test_vhash_set_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_set_stage (&tm->vhash, \ + /* vector_index */ i, \ + /* n_vectors */ VECTOR_WORD_TYPE_LEN (u32), \ + test_vhash_set_result, \ + tm, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (test_vhash_set_mod_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_set_stage (&tm->vhash, \ + /* vector_index */ tm->n_vectors_div_4, \ + /* n_vectors */ tm->n_vectors_mod_4, \ + test_vhash_set_result, \ + tm, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage \ + (test_vhash_unset_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_unset_stage (&tm->vhash, \ + /* vector_index */ i, \ + /* n_vectors */ VECTOR_WORD_TYPE_LEN (u32), \ + test_vhash_unset_result, \ + tm, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (test_vhash_unset_mod_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_unset_stage (&tm->vhash, \ + /* vector_index */ tm->n_vectors_div_4, \ + /* n_vectors */ tm->n_vectors_mod_4, \ + test_vhash_unset_result, \ + tm, N_KEY_U32); \ + }) + +_(1); +_(2); +_(3); +_(4); +_(5); +_(6); + +#undef _ + +#define _(N_KEY_U32) \ + clib_pipeline_stage \ + (test_vhash_hash_mix_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_mix_stage (&tm->vhash, i, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (test_vhash_hash_mix_mod_stage_##N_KEY_U32, \ + test_vhash_main_t *, tm, i, \ + { \ + vhash_mix_stage (&tm->vhash, tm->n_vectors_div_4, N_KEY_U32); \ + }) + +_(4); +_(5); +_(6); + +#undef _ + +typedef enum +{ + GET, SET, UNSET, +} test_vhash_op_t; + +static void +test_vhash_op (test_vhash_main_t * tm, + u32 * key_indices, + u32 * results, uword n_keys, test_vhash_op_t op) +{ + vhash_validate_sizes (&tm->vhash, tm->n_key_u32, n_keys); + + tm->vhash_results = results; + tm->vhash_key_indices = key_indices; + tm->n_vectors_div_4 = n_keys / 4; + tm->n_vectors_mod_4 = n_keys % 4; + + if (tm->n_vectors_div_4 > 0) + { + switch (tm->n_key_u32) + { + default: + ASSERT (0); + break; + +#define _(N_KEY_U32) \ + case N_KEY_U32: \ + if (op == GET) \ + clib_pipeline_run_3_stage \ + (tm->n_vectors_div_4, \ + tm, \ + test_vhash_gather_keys_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_stage_##N_KEY_U32, \ + test_vhash_get_stage_##N_KEY_U32); \ + else if (op == SET) \ + clib_pipeline_run_3_stage \ + (tm->n_vectors_div_4, \ + tm, \ + test_vhash_gather_keys_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_stage_##N_KEY_U32, \ + test_vhash_set_stage_##N_KEY_U32); \ + else \ + clib_pipeline_run_3_stage \ + (tm->n_vectors_div_4, \ + tm, \ + test_vhash_gather_keys_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_stage_##N_KEY_U32, \ + test_vhash_unset_stage_##N_KEY_U32); \ + break; + + _(1); + _(2); + _(3); + +#undef _ + +#define _(N_KEY_U32) \ + case N_KEY_U32: \ + if (op == GET) \ + clib_pipeline_run_4_stage \ + (tm->n_vectors_div_4, \ + tm, \ + test_vhash_gather_keys_stage_##N_KEY_U32, \ + test_vhash_hash_mix_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_stage_##N_KEY_U32, \ + test_vhash_get_stage_##N_KEY_U32); \ + else if (op == SET) \ + clib_pipeline_run_4_stage \ + (tm->n_vectors_div_4, \ + tm, \ + test_vhash_gather_keys_stage_##N_KEY_U32, \ + test_vhash_hash_mix_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_stage_##N_KEY_U32, \ + test_vhash_set_stage_##N_KEY_U32); \ + else \ + clib_pipeline_run_4_stage \ + (tm->n_vectors_div_4, \ + tm, \ + test_vhash_gather_keys_stage_##N_KEY_U32, \ + test_vhash_hash_mix_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_stage_##N_KEY_U32, \ + test_vhash_unset_stage_##N_KEY_U32); \ + break; + + _(4); + _(5); + _(6); + +#undef _ + } + } + + + if (tm->n_vectors_mod_4 > 0) + { + switch (tm->n_key_u32) + { + default: + ASSERT (0); + break; + +#define _(N_KEY_U32) \ + case N_KEY_U32: \ + if (op == GET) \ + clib_pipeline_run_3_stage \ + (1, \ + tm, \ + test_vhash_gather_keys_mod_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_mod_stage_##N_KEY_U32, \ + test_vhash_get_mod_stage_##N_KEY_U32); \ + else if (op == SET) \ + clib_pipeline_run_3_stage \ + (1, \ + tm, \ + test_vhash_gather_keys_mod_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_mod_stage_##N_KEY_U32, \ + test_vhash_set_mod_stage_##N_KEY_U32); \ + else \ + clib_pipeline_run_3_stage \ + (1, \ + tm, \ + test_vhash_gather_keys_mod_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_mod_stage_##N_KEY_U32, \ + test_vhash_unset_mod_stage_##N_KEY_U32); \ + break; + + _(1); + _(2); + _(3); + +#undef _ + +#define _(N_KEY_U32) \ + case N_KEY_U32: \ + if (op == GET) \ + clib_pipeline_run_4_stage \ + (1, \ + tm, \ + test_vhash_gather_keys_mod_stage_##N_KEY_U32, \ + test_vhash_hash_mix_mod_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_mod_stage_##N_KEY_U32, \ + test_vhash_get_mod_stage_##N_KEY_U32); \ + else if (op == SET) \ + clib_pipeline_run_4_stage \ + (1, \ + tm, \ + test_vhash_gather_keys_mod_stage_##N_KEY_U32, \ + test_vhash_hash_mix_mod_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_mod_stage_##N_KEY_U32, \ + test_vhash_set_mod_stage_##N_KEY_U32); \ + else \ + clib_pipeline_run_4_stage \ + (1, \ + tm, \ + test_vhash_gather_keys_mod_stage_##N_KEY_U32, \ + test_vhash_hash_mix_mod_stage_##N_KEY_U32, \ + test_vhash_hash_finalize_mod_stage_##N_KEY_U32, \ + test_vhash_unset_mod_stage_##N_KEY_U32); \ + break; + + _(4); + _(5); + _(6); + +#undef _ + } + } +} + +int +test_vhash_main (unformat_input_t * input) +{ + clib_error_t *error = 0; + test_vhash_main_t _tm, *tm = &_tm; + vhash_t *vh = &tm->vhash; + uword i, j; + + memset (tm, 0, sizeof (tm[0])); + tm->n_iter = 100; + tm->seed = 1; + tm->n_keys = 1; + tm->n_key_u32 = 1; + tm->log2_size = 8; + tm->verbose = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "iter %d", &tm->n_iter)) + ; + else if (unformat (input, "seed %d", &tm->seed)) + ; + else if (unformat (input, "n-keys %d", &tm->n_keys)) + ; + else if (unformat (input, "log2-size %d", &tm->log2_size)) + ; + else if (unformat (input, "key-words %d", &tm->n_key_u32)) + ; + else if (unformat (input, "verbose %=", &tm->verbose, 1)) + ; + else + { + error = clib_error_create ("unknown input `%U'\n", + format_unformat_error, input); + goto done; + } + } + + if (tm->seed == 0) + tm->seed = random_default_seed (); + + clib_warning ("iter %d seed %d n-keys %d log2-size %d key-words %d", + tm->n_iter, tm->seed, tm->n_keys, tm->log2_size, + tm->n_key_u32); + + { + u32 seeds[3]; + seeds[0] = seeds[1] = seeds[2] = 0xdeadbeef; + vhash_init (vh, tm->log2_size, tm->n_key_u32, seeds); + } + + /* Choose unique keys. */ + vec_resize (tm->keys, tm->n_keys * tm->n_key_u32); + vec_resize (tm->key_hash, tm->n_key_u32); + for (i = j = 0; i < vec_len (tm->keys); i++, j++) + { + j = j == tm->n_key_u32 ? 0 : j; + do + { + tm->keys[i] = random_u32 (&tm->seed); + } + while (hash_get (tm->key_hash[j], tm->keys[i])); + hash_set (tm->key_hash[j], tm->keys[i], 0); + } + + vec_resize (tm->results, tm->n_keys); + for (i = 0; i < vec_len (tm->results); i++) + { + do + { + tm->results[i] = random_u32 (&tm->seed); + } + while (tm->results[i] == ~0); + } + + vec_resize_aligned (tm->vhash_get_results, tm->n_keys, + CLIB_CACHE_LINE_BYTES); + vec_clone (tm->vhash_get_key_indices, tm->results); + for (i = 0; i < vec_len (tm->vhash_get_key_indices); i++) + tm->vhash_get_key_indices[i] = i; + + { + uword *is_set_bitmap = 0; + uword *to_set_bitmap = 0; + uword *to_unset_bitmap = 0; + u32 *to_set = 0, *to_unset = 0; + u32 *to_set_results = 0, *to_unset_results = 0; + u64 t[2]; + + for (i = 0; i < tm->n_iter; i++) + { + vec_reset_length (to_set); + vec_reset_length (to_unset); + vec_reset_length (to_set_results); + vec_reset_length (to_unset_results); + + do + { + to_set_bitmap = clib_bitmap_random (to_set_bitmap, + tm->n_keys, &tm->seed); + } + while (clib_bitmap_is_zero (to_set_bitmap)); + to_unset_bitmap = clib_bitmap_dup_and (to_set_bitmap, is_set_bitmap); + to_set_bitmap = clib_bitmap_andnot (to_set_bitmap, to_unset_bitmap); + + /* *INDENT-OFF* */ + clib_bitmap_foreach (j, to_set_bitmap, ({ + vec_add1 (to_set, j); + vec_add1 (to_set_results, tm->results[j]); + })); + /* *INDENT-ON* */ + /* *INDENT-OFF* */ + clib_bitmap_foreach (j, to_unset_bitmap, ({ + vec_add1 (to_unset, j); + vec_add1 (to_unset_results, 0xdeadbeef); + })); + /* *INDENT-ON* */ + + if (vec_len (to_set) > 0) + { + t[0] = clib_cpu_time_now (); + test_vhash_op (tm, to_set, to_set_results, vec_len (to_set), SET); + t[1] = clib_cpu_time_now (); + tm->set_stats.n_clocks += t[1] - t[0]; + tm->set_stats.n_vectors += vec_len (to_set); + tm->set_stats.n_calls += 1; + is_set_bitmap = clib_bitmap_or (is_set_bitmap, to_set_bitmap); + } + + t[0] = clib_cpu_time_now (); + test_vhash_op (tm, tm->vhash_get_key_indices, + tm->vhash_get_results, + vec_len (tm->vhash_get_key_indices), GET); + t[1] = clib_cpu_time_now (); + tm->get_stats.n_clocks += t[1] - t[0]; + tm->get_stats.n_vectors += vec_len (tm->vhash_get_key_indices); + tm->get_stats.n_calls += 1; + + for (j = 0; j < vec_len (tm->vhash_get_results); j++) + { + u32 r0 = tm->vhash_get_results[j]; + u32 r1 = tm->results[j]; + if (clib_bitmap_get (is_set_bitmap, j)) + { + if (r0 != r1) + os_panic (); + } + else + { + if (r0 != ~0) + os_panic (); + } + } + + if (vh->n_elts != clib_bitmap_count_set_bits (is_set_bitmap)) + os_panic (); + + if (vec_len (to_unset) > 0) + { + t[0] = clib_cpu_time_now (); + test_vhash_op (tm, to_unset, to_unset_results, + vec_len (to_unset), UNSET); + t[1] = clib_cpu_time_now (); + tm->unset_stats.n_clocks += t[1] - t[0]; + tm->unset_stats.n_vectors += vec_len (to_unset); + tm->unset_stats.n_calls += 1; + is_set_bitmap = + clib_bitmap_andnot (is_set_bitmap, to_unset_bitmap); + } + + t[0] = clib_cpu_time_now (); + test_vhash_op (tm, tm->vhash_get_key_indices, + tm->vhash_get_results, + vec_len (tm->vhash_get_key_indices), GET); + t[1] = clib_cpu_time_now (); + tm->get_stats.n_clocks += t[1] - t[0]; + tm->get_stats.n_vectors += vec_len (tm->vhash_get_key_indices); + tm->get_stats.n_calls += 1; + + for (j = 0; j < vec_len (tm->vhash_get_results); j++) + { + u32 r0 = tm->vhash_get_results[j]; + u32 r1 = tm->results[j]; + if (clib_bitmap_get (is_set_bitmap, j)) + { + if (r0 != r1) + os_panic (); + } + else + { + if (r0 != ~0) + os_panic (); + } + } + + if (vh->n_elts != clib_bitmap_count_set_bits (is_set_bitmap)) + os_panic (); + } + + vhash_resize (vh, tm->log2_size + 1); + + test_vhash_op (tm, tm->vhash_get_key_indices, + tm->vhash_get_results, + vec_len (tm->vhash_get_key_indices), GET); + + for (j = 0; j < vec_len (tm->vhash_get_results); j++) + { + u32 r0 = tm->vhash_get_results[j]; + u32 r1 = tm->results[j]; + if (clib_bitmap_get (is_set_bitmap, j)) + { + if (r0 != r1) + os_panic (); + } + else + { + if (r0 != ~0) + os_panic (); + } + } + + if (vh->n_elts != clib_bitmap_count_set_bits (is_set_bitmap)) + os_panic (); + } + + { + clib_time_t ct; + + clib_time_init (&ct); + + clib_warning ("%.4e clocks/get %.4e gets/call %.4e gets/sec", + (f64) tm->get_stats.n_clocks / + (f64) tm->get_stats.n_vectors, + (f64) tm->get_stats.n_vectors / (f64) tm->get_stats.n_calls, + (f64) tm->get_stats.n_vectors / + (f64) (tm->get_stats.n_clocks * ct.seconds_per_clock)); + if (tm->set_stats.n_calls > 0) + clib_warning ("%.4e clocks/set %.4e sets/call %.4e sets/sec", + (f64) tm->set_stats.n_clocks / + (f64) tm->set_stats.n_vectors, + (f64) tm->set_stats.n_vectors / + (f64) tm->set_stats.n_calls, + (f64) tm->set_stats.n_vectors / + (f64) (tm->set_stats.n_clocks * ct.seconds_per_clock)); + if (tm->unset_stats.n_calls > 0) + clib_warning ("%.4e clocks/unset %.4e unsets/call %.4e unsets/sec", + (f64) tm->unset_stats.n_clocks / + (f64) tm->unset_stats.n_vectors, + (f64) tm->unset_stats.n_vectors / + (f64) tm->unset_stats.n_calls, + (f64) tm->unset_stats.n_vectors / + (f64) (tm->unset_stats.n_clocks * ct.seconds_per_clock)); + } + +done: + if (error) + clib_error_report (error); + return 0; +} + +#endif /* CLIB_HAVE_VEC128 */ + +#ifndef CLIB_HAVE_VEC128 +int +test_vhash_main (unformat_input_t * input) +{ + clib_error ("compiled without vector support"); + return 0; +} +#endif + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int r; + + unformat_init_command_line (&i, argv); + r = test_vhash_main (&i); + unformat_free (&i); + return r; +} +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_zvec.c b/src/vppinfra/test_zvec.c new file mode 100644 index 00000000..874fdefa --- /dev/null +++ b/src/vppinfra/test_zvec.c @@ -0,0 +1,117 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/zvec.h> +#include <vppinfra/format.h> +#include <vppinfra/random.h> + +static int verbose; +#define if_verbose(format,args...) \ + if (verbose) { clib_warning(format, ## args); } + +int +test_zvec_main (unformat_input_t * input) +{ + uword n_iterations; + uword i; + u32 seed; + + n_iterations = 1024; + seed = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (0 == unformat (input, "iter %d", &n_iterations) + && 0 == unformat (input, "seed %d", &seed)) + clib_error ("unknown input `%U'", format_unformat_error, input); + } + + if_verbose ("%d iterations, seed %d\n", n_iterations, seed); + + for (i = 0; i < n_iterations; i++) + { + uword coding, data, d[2], limit, n_zdata_bits[2]; + + if (seed) + coding = random_u32 (&seed); + else + coding = i; + + limit = coding - 1; + if (limit > (1 << 16)) + limit = 1 << 16; + for (data = 0; data <= limit; data++) + { + d[0] = zvec_encode (coding, data, &n_zdata_bits[0]); + + if (coding != 0) + ASSERT ((d[0] >> n_zdata_bits[0]) == 0); + + d[1] = zvec_decode (coding, d[0], &n_zdata_bits[1]); + ASSERT (data == d[1]); + + ASSERT (n_zdata_bits[0] == n_zdata_bits[1]); + } + } + + return 0; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int ret; + + verbose = (argc > 1); + unformat_init_command_line (&i, argv); + ret = test_zvec_main (&i); + unformat_free (&i); + + return ret; +} +#endif /* CLIB_UNIX */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/time.c b/src/vppinfra/time.c new file mode 100644 index 00000000..168d7375 --- /dev/null +++ b/src/vppinfra/time.c @@ -0,0 +1,232 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/os.h> +#include <vppinfra/time.h> +#include <vppinfra/format.h> +#include <vppinfra/cpu.h> + +#ifdef CLIB_UNIX + +#include <math.h> +#include <sys/time.h> +#include <fcntl.h> + +/* Not very accurate way of determining cpu clock frequency + for unix. Better to use /proc/cpuinfo on linux. */ +static f64 +estimate_clock_frequency (f64 sample_time) +{ + /* Round to nearest 100KHz. */ + const f64 round_to_units = 100e5; + + f64 time_now, time_start, time_limit, freq; + u64 ifreq, t[2]; + + time_start = time_now = unix_time_now (); + time_limit = time_now + sample_time; + t[0] = clib_cpu_time_now (); + while (time_now < time_limit) + time_now = unix_time_now (); + t[1] = clib_cpu_time_now (); + + freq = (t[1] - t[0]) / (time_now - time_start); + ifreq = flt_round_nearest (freq / round_to_units); + freq = ifreq * round_to_units; + + return freq; +} + +/* Fetch cpu frequency via parseing /proc/cpuinfo. + Only works for Linux. */ +static f64 +clock_frequency_from_proc_filesystem (void) +{ + f64 cpu_freq = 1e9; /* better than 40... */ + f64 ppc_timebase = 0; /* warnings be gone */ + int fd; + unformat_input_t input; + +/* $$$$ aarch64 kernel doesn't report "cpu MHz" */ +#if defined(__aarch64__) + return 0.0; +#endif + + cpu_freq = 0; + fd = open ("/proc/cpuinfo", 0); + if (fd < 0) + return cpu_freq; + + unformat_init_unix_file (&input, fd); + + ppc_timebase = 0; + while (unformat_check_input (&input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (&input, "cpu MHz : %f", &cpu_freq)) + cpu_freq *= 1e6; + else if (unformat (&input, "timebase : %f", &ppc_timebase)) + ; + else + unformat_skip_line (&input); + } + + unformat_free (&input); + + close (fd); + + /* Override CPU frequency with time base for PPC. */ + if (ppc_timebase != 0) + cpu_freq = ppc_timebase; + + return cpu_freq; +} + +/* Fetch cpu frequency via reading /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq + Only works for Linux. */ +static f64 +clock_frequency_from_sys_filesystem (void) +{ + f64 cpu_freq; + int fd; + unformat_input_t input; + + /* Time stamp always runs at max frequency. */ + cpu_freq = 0; + fd = open ("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq", 0); + if (fd < 0) + goto done; + + unformat_init_unix_file (&input, fd); + unformat (&input, "%f", &cpu_freq); + cpu_freq *= 1e3; /* measured in kHz */ + unformat_free (&input); + close (fd); +done: + return cpu_freq; +} + +f64 +os_cpu_clock_frequency (void) +{ + f64 cpu_freq; + + if (clib_cpu_supports_invariant_tsc ()) + return estimate_clock_frequency (1e-3); + +#if defined (__aarch64__) + u64 tsc; + asm volatile ("mrs %0, CNTFRQ_EL0":"=r" (tsc)); + return (f64) tsc; +#endif + + /* First try /sys version. */ + cpu_freq = clock_frequency_from_sys_filesystem (); + if (cpu_freq != 0) + return cpu_freq; + + /* Next try /proc version. */ + cpu_freq = clock_frequency_from_proc_filesystem (); + if (cpu_freq != 0) + return cpu_freq; + + /* If /proc/cpuinfo fails (e.g. not running on Linux) fall back to + gettimeofday based estimated clock frequency. */ + return estimate_clock_frequency (1e-3); +} + +#endif /* CLIB_UNIX */ + +/* Initialize time. */ +void +clib_time_init (clib_time_t * c) +{ + memset (c, 0, sizeof (c[0])); + c->clocks_per_second = os_cpu_clock_frequency (); + c->seconds_per_clock = 1 / c->clocks_per_second; + c->log2_clocks_per_second = min_log2_u64 ((u64) c->clocks_per_second); + + /* Initially verify frequency every sec */ + c->log2_clocks_per_frequency_verify = c->log2_clocks_per_second; + + c->last_verify_reference_time = unix_time_now (); + c->last_cpu_time = clib_cpu_time_now (); + c->init_cpu_time = c->last_verify_cpu_time = c->last_cpu_time; +} + +void +clib_time_verify_frequency (clib_time_t * c) +{ + f64 now_reference = unix_time_now (); + f64 dtr = now_reference - c->last_verify_reference_time; + f64 dtr_max; + u64 dtc = c->last_cpu_time - c->last_verify_cpu_time; + f64 round_units = 100e5; + + c->last_verify_cpu_time = c->last_cpu_time; + c->last_verify_reference_time = now_reference; + + /* + * Is the reported reference interval non-positive, + * or off by a factor of two - or 8 seconds - whichever is larger? + * Someone reset the clock behind our back. + */ + dtr_max = (f64) (2ULL << c->log2_clocks_per_frequency_verify) / + (f64) (1ULL << c->log2_clocks_per_second); + dtr_max = dtr_max > 8.0 ? dtr_max : 8.0; + + if (dtr <= 0.0 || dtr > dtr_max) + { + c->log2_clocks_per_frequency_verify = c->log2_clocks_per_second; + return; + } + + c->clocks_per_second = + flt_round_nearest ((f64) dtc / (dtr * round_units)) * round_units; + c->seconds_per_clock = 1 / c->clocks_per_second; + + /* Double time between verifies; max at 64 secs ~ 1 minute. */ + if (c->log2_clocks_per_frequency_verify < c->log2_clocks_per_second + 6) + c->log2_clocks_per_frequency_verify += 1; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/time.h b/src/vppinfra/time.h new file mode 100644 index 00000000..3fdc7d43 --- /dev/null +++ b/src/vppinfra/time.h @@ -0,0 +1,312 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_time_h +#define included_time_h + +#include <vppinfra/clib.h> + +typedef struct +{ + /* Total run time in clock cycles + since clib_time_init call. */ + u64 total_cpu_time; + + /* Last recorded time stamp. */ + u64 last_cpu_time; + + /* CPU clock frequency. */ + f64 clocks_per_second; + + /* 1 / cpu clock frequency: conversion factor + from clock cycles into seconds. */ + f64 seconds_per_clock; + + /* Time stamp of call to clib_time_init call. */ + u64 init_cpu_time; + + u64 last_verify_cpu_time; + + /* Same but for reference time (if present). */ + f64 last_verify_reference_time; + + u32 log2_clocks_per_second, log2_clocks_per_frequency_verify; +} clib_time_t; + +/* Return CPU time stamp as 64bit number. */ +#if defined(__x86_64__) || defined(i386) +always_inline u64 +clib_cpu_time_now (void) +{ + u32 a, d; + asm volatile ("rdtsc":"=a" (a), "=d" (d)); + return (u64) a + ((u64) d << (u64) 32); +} + +#elif defined (__powerpc64__) + +always_inline u64 +clib_cpu_time_now (void) +{ + u64 t; + asm volatile ("mftb %0":"=r" (t)); + return t; +} + +#elif defined (__SPU__) + +always_inline u64 +clib_cpu_time_now (void) +{ +#ifdef _XLC + return spu_rdch (0x8); +#else + return 0 /* __builtin_si_rdch (0x8) FIXME */ ; +#endif +} + +#elif defined (__powerpc__) + +always_inline u64 +clib_cpu_time_now (void) +{ + u32 hi1, hi2, lo; + asm volatile ("1:\n" + "mftbu %[hi1]\n" + "mftb %[lo]\n" + "mftbu %[hi2]\n" + "cmpw %[hi1],%[hi2]\n" + "bne 1b\n":[hi1] "=r" (hi1),[hi2] "=r" (hi2),[lo] "=r" (lo)); + return (u64) lo + ((u64) hi2 << (u64) 32); +} + +#elif defined (__arm__) +#if defined(__ARM_ARCH_8A__) +always_inline u64 +clib_cpu_time_now (void) /* We may run arm64 in aarch32 mode, to leverage 64bit counter */ +{ + u64 tsc; + asm volatile ("mrrc p15, 0, %Q0, %R0, c9":"=r" (tsc)); + return tsc; +} +#elif defined(__ARM_ARCH_7A__) +always_inline u64 +clib_cpu_time_now (void) +{ + u32 tsc; + asm volatile ("mrc p15, 0, %0, c9, c13, 0":"=r" (tsc)); + return (u64) tsc; +} +#else +always_inline u64 +clib_cpu_time_now (void) +{ + u32 lo; + asm volatile ("mrc p15, 0, %[lo], c15, c12, 1":[lo] "=r" (lo)); + return (u64) lo; +} +#endif + +#elif defined (__xtensa__) + +/* Stub for now. */ +always_inline u64 +clib_cpu_time_now (void) +{ + return 0; +} + +#elif defined (__TMS320C6X__) + +always_inline u64 +clib_cpu_time_now (void) +{ + u32 l, h; + + asm volatile (" dint\n" + " mvc .s2 TSCL,%0\n" + " mvc .s2 TSCH,%1\n" " rint\n":"=b" (l), "=b" (h)); + + return ((u64) h << 32) | l; +} + +#elif defined (__aarch64__) +always_inline u64 +clib_cpu_time_now (void) +{ + u64 tsc; + + /* Works on Cavium ThunderX. Other platforms: YMMV */ + asm volatile ("mrs %0, cntvct_el0":"=r" (tsc)); + + return tsc; +} + +#else +#error "don't know how to read CPU time stamp" + +#endif + +void clib_time_verify_frequency (clib_time_t * c); + +always_inline f64 +clib_time_now_internal (clib_time_t * c, u64 n) +{ + u64 l = c->last_cpu_time; + u64 t = c->total_cpu_time; + t += n - l; + c->total_cpu_time = t; + c->last_cpu_time = n; + if (PREDICT_FALSE + ((c->last_cpu_time - + c->last_verify_cpu_time) >> c->log2_clocks_per_frequency_verify)) + clib_time_verify_frequency (c); + return t * c->seconds_per_clock; +} + +always_inline f64 +clib_time_now (clib_time_t * c) +{ + return clib_time_now_internal (c, clib_cpu_time_now ()); +} + +always_inline void +clib_cpu_time_wait (u64 dt) +{ + u64 t_end = clib_cpu_time_now () + dt; + while (clib_cpu_time_now () < t_end) + ; +} + +void clib_time_init (clib_time_t * c); + +#ifdef CLIB_UNIX + +#include <time.h> +#include <sys/time.h> +#include <sys/resource.h> +#include <unistd.h> +#include <sys/syscall.h> + +/* Use 64bit floating point to represent time offset from epoch. */ +always_inline f64 +unix_time_now (void) +{ + /* clock_gettime without indirect syscall uses GLIBC wrappers which + we don't want. Just the bare metal, please. */ + struct timespec ts; + syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts); + return ts.tv_sec + 1e-9 * ts.tv_nsec; +} + +/* As above but integer number of nano-seconds. */ +always_inline u64 +unix_time_now_nsec (void) +{ + struct timespec ts; + syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts); + return 1e9 * ts.tv_sec + ts.tv_nsec; +} + +always_inline void +unix_time_now_nsec_fraction (u32 * sec, u32 * nsec) +{ + struct timespec ts; + syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts); + *sec = ts.tv_sec; + *nsec = ts.tv_nsec; +} + +always_inline f64 +unix_usage_now (void) +{ + struct rusage u; + getrusage (RUSAGE_SELF, &u); + return u.ru_utime.tv_sec + 1e-6 * u.ru_utime.tv_usec + + u.ru_stime.tv_sec + 1e-6 * u.ru_stime.tv_usec; +} + +always_inline void +unix_sleep (f64 dt) +{ + struct timespec t; + t.tv_sec = dt; + t.tv_nsec = 1e9 * dt; + nanosleep (&t, 0); +} + +#else /* ! CLIB_UNIX */ + +always_inline f64 +unix_time_now (void) +{ + return 0; +} + +always_inline u64 +unix_time_now_nsec (void) +{ + return 0; +} + +always_inline void +unix_time_now_nsec_fraction (u32 * sec, u32 * nsec) +{ +} + +always_inline f64 +unix_usage_now (void) +{ + return 0; +} + +always_inline void +unix_sleep (f64 dt) +{ +} + +#endif + +#endif /* included_time_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/timer.c b/src/vppinfra/timer.c new file mode 100644 index 00000000..0221cb74 --- /dev/null +++ b/src/vppinfra/timer.c @@ -0,0 +1,322 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <math.h> +#include <stdlib.h> +#include <string.h> +#include <sys/param.h> + +#include <vppinfra/vec.h> +#include <vppinfra/time.h> +#include <vppinfra/timer.h> +#include <vppinfra/error.h> + +typedef struct +{ + f64 time; + timer_func_t *func; + any arg; +} timer_callback_t; + +/* Vector of currently unexpired timers. */ +static timer_callback_t *timers; + +/* Convert time from 64bit floating format to struct timeval. */ +always_inline void +f64_to_tv (f64 t, struct timeval *tv) +{ + tv->tv_sec = t; + tv->tv_usec = 1e6 * (t - tv->tv_sec); + while (tv->tv_usec >= 1000000) + { + tv->tv_usec -= 1000000; + tv->tv_sec += 1; + } +} + +/* Sort timers so that timer soonest to expire is at end. */ +static int +timer_compare (const void *_a, const void *_b) +{ + const timer_callback_t *a = _a; + const timer_callback_t *b = _b; + f64 dt = b->time - a->time; + return dt < 0 ? -1 : (dt > 0 ? +1 : 0); +} + +static inline void +sort_timers (timer_callback_t * timers) +{ + qsort (timers, vec_len (timers), sizeof (timers[0]), timer_compare); +} + +#define TIMER_SIGNAL SIGALRM + +/* Don't bother set timer if time different is less than this value. */ +/* We would like to initialize this to 0.75 / (f64) HZ, + * but HZ may not be a compile-time constant on some systems, + * so instead we do the initialization before first use. + */ +static f64 time_resolution; + +/* Interrupt handler. Call functions for all expired timers. + Set time for next timer interrupt. */ +static void +timer_interrupt (int signum) +{ + f64 now = unix_time_now (); + f64 dt; + timer_callback_t *t; + + while (1) + { + if (vec_len (timers) <= 0) + return; + + /* Consider last (earliest) timer in reverse sorted + vector of pending timers. */ + t = vec_end (timers) - 1; + + ASSERT (now >= 0 && finite (now)); + + /* Time difference between when timer goes off and now. */ + dt = t->time - now; + + /* If timer is within threshold of going off + call user's callback. */ + if (dt <= time_resolution && finite (dt)) + { + _vec_len (timers) -= 1; + (*t->func) (t->arg, -dt); + } + else + { + /* Set timer for to go off in future. */ + struct itimerval itv; + memset (&itv, 0, sizeof (itv)); + f64_to_tv (dt, &itv.it_value); + if (setitimer (ITIMER_REAL, &itv, 0) < 0) + clib_unix_error ("sititmer"); + return; + } + } +} + +void +timer_block (sigset_t * save) +{ + sigset_t block_timer; + + memset (&block_timer, 0, sizeof (block_timer)); + sigaddset (&block_timer, TIMER_SIGNAL); + sigprocmask (SIG_BLOCK, &block_timer, save); +} + +void +timer_unblock (sigset_t * save) +{ + sigprocmask (SIG_SETMASK, save, 0); +} + +/* Arrange for function to be called some time, + roughly equal to dt seconds, in the future. */ +void +timer_call (timer_func_t * func, any arg, f64 dt) +{ + timer_callback_t *t; + sigset_t save; + + /* Install signal handler on first call. */ + static word signal_installed = 0; + + if (!signal_installed) + { + struct sigaction sa; + + /* Initialize time_resolution before first call to timer_interrupt */ + time_resolution = 0.75 / (f64) HZ; + + memset (&sa, 0, sizeof (sa)); + sa.sa_handler = timer_interrupt; + + if (sigaction (TIMER_SIGNAL, &sa, 0) < 0) + clib_panic ("sigaction"); + + signal_installed = 1; + } + + timer_block (&save); + + /* Add new timer. */ + vec_add2 (timers, t, 1); + + t->time = unix_time_now () + dt; + t->func = func; + t->arg = arg; + + { + word reset_timer = vec_len (timers) == 1; + + if (_vec_len (timers) > 1) + { + reset_timer += t->time < (t - 1)->time; + sort_timers (timers); + } + + if (reset_timer) + timer_interrupt (TIMER_SIGNAL); + } + + timer_unblock (&save); +} + +#ifdef TEST + +#include <vppinfra/random.h> + +/* Compute average delay of function calls to foo. + If this is a small number over a lot of iterations we know + the code is working. */ + +static f64 ave_delay = 0; +static word ave_delay_count = 0; + +always_inline +update (f64 delay) +{ + ave_delay += delay; + ave_delay_count += 1; +} + +typedef struct +{ + f64 time_requested, time_called; +} foo_t; + +static f64 foo_base_time = 0; +static foo_t *foos = 0; + +void +foo (any arg, f64 delay) +{ + foos[arg].time_called = unix_time_now () - foo_base_time; + update (delay); +} + +typedef struct +{ + word count; + word limit; +} bar_t; + +void +bar (any arg, f64 delay) +{ + bar_t *b = (bar_t *) arg; + + fformat (stdout, "bar %d delay %g\n", b->count++, delay); + + update (delay); + if (b->count < b->limit) + timer_call (bar, arg, random_f64 ()); +} + +int +main (int argc, char *argv[]) +{ + word i, n = atoi (argv[1]); + word run_foo = argc > 2; +bar_t b = { limit:10 }; + + if (run_foo) + { + f64 time_limit; + + time_limit = atof (argv[2]); + + vec_resize (foos, n); + for (i = 0; i < n; i++) + { + foos[i].time_requested = time_limit * random_f64 (); + foos[i].time_called = 1e100; + } + + foo_base_time = unix_time_now (); + for (i = 0; i < n; i++) + timer_call (foo, i, foos[i].time_requested); + } + else + timer_call (bar, (any) & b, random_f64 ()); + + while (vec_len (timers) > 0) + sched_yield (); + + if (vec_len (foos) > 0) + { + f64 min = 1e100, max = -min; + f64 ave = 0, rms = 0; + + for (i = 0; i < n; i++) + { + f64 dt = foos[i].time_requested - foos[i].time_called; + if (dt < min) + min = dt; + if (dt > max) + max = dt; + ave += dt; + rms += dt * dt; + } + ave /= n; + rms = sqrt (rms / n - ave * ave); + fformat (stdout, "error min %g max %g ave %g +- %g\n", min, max, ave, + rms); + } + + fformat (stdout, "%d function calls, ave. timer delay %g secs\n", + ave_delay_count, ave_delay / ave_delay_count); + + return 0; +} +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/timer.h b/src/vppinfra/timer.h new file mode 100644 index 00000000..764103f7 --- /dev/null +++ b/src/vppinfra/timer.h @@ -0,0 +1,46 @@ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_timer_h +#define included_timer_h + +#include <signal.h> + +typedef void (timer_func_t) (any arg, f64 delay); + +/* Arrange for function to be called after time interval (in seconds) has elapsed. */ +extern void timer_call (timer_func_t * func, any arg, f64 time_interval); + +/* Block/unblock timer interrupts. */ +extern void timer_block (sigset_t * save); +extern void timer_unblock (sigset_t * save); + +#endif /* included_timer_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/timing_wheel.c b/src/vppinfra/timing_wheel.c new file mode 100644 index 00000000..064171ab --- /dev/null +++ b/src/vppinfra/timing_wheel.c @@ -0,0 +1,759 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include <vppinfra/bitmap.h> +#include <vppinfra/hash.h> +#include <vppinfra/pool.h> +#include <vppinfra/timing_wheel.h> + +void +timing_wheel_init (timing_wheel_t * w, u64 current_cpu_time, + f64 cpu_clocks_per_second) +{ + if (w->max_sched_time <= w->min_sched_time) + { + w->min_sched_time = 1e-6; + w->max_sched_time = 1e-3; + } + + w->cpu_clocks_per_second = cpu_clocks_per_second; + w->log2_clocks_per_bin = + max_log2 (w->cpu_clocks_per_second * w->min_sched_time); + w->log2_bins_per_wheel = + max_log2 (w->cpu_clocks_per_second * w->max_sched_time); + w->log2_bins_per_wheel -= w->log2_clocks_per_bin; + w->log2_clocks_per_wheel = w->log2_bins_per_wheel + w->log2_clocks_per_bin; + w->bins_per_wheel = 1 << w->log2_bins_per_wheel; + w->bins_per_wheel_mask = w->bins_per_wheel - 1; + + w->current_time_index = current_cpu_time >> w->log2_clocks_per_bin; + + if (w->n_wheel_elt_time_bits <= 0 || + w->n_wheel_elt_time_bits >= STRUCT_BITS_OF (timing_wheel_elt_t, + cpu_time_relative_to_base)) + w->n_wheel_elt_time_bits = + STRUCT_BITS_OF (timing_wheel_elt_t, cpu_time_relative_to_base) - 1; + + w->cpu_time_base = current_cpu_time; + w->time_index_next_cpu_time_base_update + = + w->current_time_index + + ((u64) 1 << (w->n_wheel_elt_time_bits - w->log2_clocks_per_bin)); +} + +always_inline uword +get_level_and_relative_time (timing_wheel_t * w, u64 cpu_time, + uword * rtime_result) +{ + u64 dt, rtime; + uword level_index; + + dt = (cpu_time >> w->log2_clocks_per_bin); + + /* Time should always move forward. */ + ASSERT (dt >= w->current_time_index); + + dt -= w->current_time_index; + + /* Find level and offset within level. Level i has bins of size 2^((i+1)*M) */ + rtime = dt; + for (level_index = 0; (rtime >> w->log2_bins_per_wheel) != 0; level_index++) + rtime = (rtime >> w->log2_bins_per_wheel) - 1; + + /* Return offset within level and level index. */ + ASSERT (rtime < w->bins_per_wheel); + *rtime_result = rtime; + return level_index; +} + +always_inline uword +time_index_to_wheel_index (timing_wheel_t * w, uword level_index, u64 ti) +{ + return (ti >> (level_index * w->log2_bins_per_wheel)) & + w->bins_per_wheel_mask; +} + +/* Find current time on this level. */ +always_inline uword +current_time_wheel_index (timing_wheel_t * w, uword level_index) +{ + return time_index_to_wheel_index (w, level_index, w->current_time_index); +} + +/* Circular wheel indexing. */ +always_inline uword +wheel_add (timing_wheel_t * w, word x) +{ + return x & w->bins_per_wheel_mask; +} + +always_inline uword +rtime_to_wheel_index (timing_wheel_t * w, uword level_index, uword rtime) +{ + uword t = current_time_wheel_index (w, level_index); + return wheel_add (w, t + rtime); +} + +static clib_error_t * +validate_level (timing_wheel_t * w, uword level_index, uword * n_elts) +{ + timing_wheel_level_t *level; + timing_wheel_elt_t *e; + uword wi; + clib_error_t *error = 0; + +#define _(x) \ + do { \ + error = CLIB_ERROR_ASSERT (x); \ + ASSERT (! error); \ + if (error) return error; \ + } while (0) + + level = vec_elt_at_index (w->levels, level_index); + for (wi = 0; wi < vec_len (level->elts); wi++) + { + /* Validate occupancy bitmap. */ + _(clib_bitmap_get_no_check (level->occupancy_bitmap, wi) == + (vec_len (level->elts[wi]) > 0)); + + *n_elts += vec_len (level->elts[wi]); + + vec_foreach (e, level->elts[wi]) + { + /* Validate time bin and level. */ + u64 e_time; + uword e_ti, e_li, e_wi; + + e_time = e->cpu_time_relative_to_base + w->cpu_time_base; + e_li = get_level_and_relative_time (w, e_time, &e_ti); + e_wi = rtime_to_wheel_index (w, level_index, e_ti); + + if (e_li == level_index - 1) + /* If this element was scheduled on the previous level + it must be wrapped. */ + _(e_ti + current_time_wheel_index (w, level_index - 1) + >= w->bins_per_wheel); + else + { + _(e_li == level_index); + if (e_li == 0) + _(e_wi == wi); + else + _(e_wi == wi || e_wi + 1 == wi || e_wi - 1 == wi); + } + } + } + +#undef _ + + return error; +} + +void +timing_wheel_validate (timing_wheel_t * w) +{ + uword l; + clib_error_t *error = 0; + uword n_elts; + + if (!w->validate) + return; + + n_elts = pool_elts (w->overflow_pool); + for (l = 0; l < vec_len (w->levels); l++) + { + error = validate_level (w, l, &n_elts); + if (error) + clib_error_report (error); + } +} + +always_inline void +free_elt_vector (timing_wheel_t * w, timing_wheel_elt_t * ev) +{ + /* Poison free elements so we never use them by mistake. */ + if (CLIB_DEBUG > 0) + memset (ev, ~0, vec_len (ev) * sizeof (ev[0])); + _vec_len (ev) = 0; + vec_add1 (w->free_elt_vectors, ev); +} + +static timing_wheel_elt_t * +insert_helper (timing_wheel_t * w, uword level_index, uword rtime) +{ + timing_wheel_level_t *level; + timing_wheel_elt_t *e; + uword wheel_index; + + /* Circular buffer. */ + vec_validate (w->levels, level_index); + level = vec_elt_at_index (w->levels, level_index); + + if (PREDICT_FALSE (!level->elts)) + { + uword max = w->bins_per_wheel - 1; + clib_bitmap_validate (level->occupancy_bitmap, max); + vec_validate (level->elts, max); + } + + wheel_index = rtime_to_wheel_index (w, level_index, rtime); + + level->occupancy_bitmap = + clib_bitmap_ori (level->occupancy_bitmap, wheel_index); + + /* Allocate an elt vector from free list if there is one. */ + if (!level->elts[wheel_index] && vec_len (w->free_elt_vectors)) + level->elts[wheel_index] = vec_pop (w->free_elt_vectors); + + /* Add element to vector for this time bin. */ + vec_add2 (level->elts[wheel_index], e, 1); + + return e; +} + +/* Insert user data on wheel at given CPU time stamp. */ +static void +timing_wheel_insert_helper (timing_wheel_t * w, u64 insert_cpu_time, + u32 user_data) +{ + timing_wheel_elt_t *e; + u64 dt; + uword rtime, level_index; + + level_index = get_level_and_relative_time (w, insert_cpu_time, &rtime); + + dt = insert_cpu_time - w->cpu_time_base; + if (PREDICT_TRUE (0 == (dt >> BITS (e->cpu_time_relative_to_base)))) + { + e = insert_helper (w, level_index, rtime); + e->user_data = user_data; + e->cpu_time_relative_to_base = dt; + if (insert_cpu_time < w->cached_min_cpu_time_on_wheel) + w->cached_min_cpu_time_on_wheel = insert_cpu_time; + } + else + { + /* Time too far in the future: add to overflow vector. */ + timing_wheel_overflow_elt_t *oe; + pool_get (w->overflow_pool, oe); + oe->user_data = user_data; + oe->cpu_time = insert_cpu_time; + } +} + +always_inline uword +elt_is_deleted (timing_wheel_t * w, u32 user_data) +{ + return (hash_elts (w->deleted_user_data_hash) > 0 + && hash_get (w->deleted_user_data_hash, user_data)); +} + +static timing_wheel_elt_t * +delete_user_data (timing_wheel_elt_t * elts, u32 user_data) +{ + uword found_match; + timing_wheel_elt_t *e, *new_elts; + + /* Quickly scan to see if there are any elements to delete + in this bucket. */ + found_match = 0; + vec_foreach (e, elts) + { + found_match = e->user_data == user_data; + if (found_match) + break; + } + if (!found_match) + return elts; + + /* Re-scan to build vector of new elts with matching user_data deleted. */ + new_elts = 0; + vec_foreach (e, elts) + { + if (e->user_data != user_data) + vec_add1 (new_elts, e[0]); + } + + vec_free (elts); + return new_elts; +} + +/* Insert user data on wheel at given CPU time stamp. */ +void +timing_wheel_insert (timing_wheel_t * w, u64 insert_cpu_time, u32 user_data) +{ + /* Remove previously deleted elements. */ + if (elt_is_deleted (w, user_data)) + { + timing_wheel_level_t *l; + uword wi; + + /* Delete elts with given user data so that stale events don't expire. */ + vec_foreach (l, w->levels) + { + /* *INDENT-OFF* */ + clib_bitmap_foreach (wi, l->occupancy_bitmap, ({ + l->elts[wi] = delete_user_data (l->elts[wi], user_data); + if (vec_len (l->elts[wi]) == 0) + l->occupancy_bitmap = clib_bitmap_andnoti (l->occupancy_bitmap, wi); + })); + /* *INDENT-ON* */ + } + + { + timing_wheel_overflow_elt_t *oe; + /* *INDENT-OFF* */ + pool_foreach (oe, w->overflow_pool, ({ + if (oe->user_data == user_data) + pool_put (w->overflow_pool, oe); + })); + /* *INDENT-ON* */ + } + + hash_unset (w->deleted_user_data_hash, user_data); + } + + timing_wheel_insert_helper (w, insert_cpu_time, user_data); +} + +void +timing_wheel_delete (timing_wheel_t * w, u32 user_data) +{ + if (!w->deleted_user_data_hash) + w->deleted_user_data_hash = + hash_create ( /* capacity */ 0, /* value bytes */ 0); + + hash_set1 (w->deleted_user_data_hash, user_data); +} + +/* Returns time of next expiring element. */ +u64 +timing_wheel_next_expiring_elt_time (timing_wheel_t * w) +{ + timing_wheel_level_t *l; + timing_wheel_elt_t *e; + uword li, wi, wi0; + u32 min_dt; + u64 min_t; + uword wrapped = 0; + + min_dt = ~0; + min_t = ~0ULL; + vec_foreach (l, w->levels) + { + if (!l->occupancy_bitmap) + continue; + + li = l - w->levels; + wi0 = wi = current_time_wheel_index (w, li); + wrapped = 0; + while (1) + { + if (clib_bitmap_get_no_check (l->occupancy_bitmap, wi)) + { + vec_foreach (e, l->elts[wi]) + min_dt = clib_min (min_dt, e->cpu_time_relative_to_base); + + if (wrapped && li + 1 < vec_len (w->levels)) + { + uword wi1 = current_time_wheel_index (w, li + 1); + if (l[1].occupancy_bitmap + && clib_bitmap_get_no_check (l[1].occupancy_bitmap, wi1)) + { + vec_foreach (e, l[1].elts[wi1]) + { + min_dt = + clib_min (min_dt, e->cpu_time_relative_to_base); + } + } + } + + min_t = w->cpu_time_base + min_dt; + goto done; + } + + wi = wheel_add (w, wi + 1); + if (wi == wi0) + break; + + wrapped = wi != wi + 1; + } + } + + { + timing_wheel_overflow_elt_t *oe; + + if (min_dt != ~0) + min_t = w->cpu_time_base + min_dt; + + /* *INDENT-OFF* */ + pool_foreach (oe, w->overflow_pool, + ({ min_t = clib_min (min_t, oe->cpu_time); })); + /* *INDENT-ON* */ + + done: + return min_t; + } +} + +static inline void +insert_elt (timing_wheel_t * w, timing_wheel_elt_t * e) +{ + u64 t = w->cpu_time_base + e->cpu_time_relative_to_base; + timing_wheel_insert_helper (w, t, e->user_data); +} + +always_inline u64 +elt_cpu_time (timing_wheel_t * w, timing_wheel_elt_t * e) +{ + return w->cpu_time_base + e->cpu_time_relative_to_base; +} + +always_inline void +validate_expired_elt (timing_wheel_t * w, timing_wheel_elt_t * e, + u64 current_cpu_time) +{ + if (CLIB_DEBUG > 0) + { + u64 e_time = elt_cpu_time (w, e); + + /* Verify that element is actually expired. */ + ASSERT ((e_time >> w->log2_clocks_per_bin) + <= (current_cpu_time >> w->log2_clocks_per_bin)); + } +} + +static u32 * +expire_bin (timing_wheel_t * w, + uword level_index, + uword wheel_index, u64 advance_cpu_time, u32 * expired_user_data) +{ + timing_wheel_level_t *level = vec_elt_at_index (w->levels, level_index); + timing_wheel_elt_t *e; + u32 *x; + uword i, j, e_len; + + e = vec_elt (level->elts, wheel_index); + e_len = vec_len (e); + + vec_add2 (expired_user_data, x, e_len); + for (i = j = 0; i < e_len; i++) + { + validate_expired_elt (w, &e[i], advance_cpu_time); + x[j] = e[i].user_data; + + /* Only advance if elt is not to be deleted. */ + j += !elt_is_deleted (w, e[i].user_data); + } + + /* Adjust for deleted elts. */ + if (j < e_len) + _vec_len (expired_user_data) -= e_len - j; + + free_elt_vector (w, e); + + level->elts[wheel_index] = 0; + clib_bitmap_set_no_check (level->occupancy_bitmap, wheel_index, 0); + + return expired_user_data; +} + +/* Called rarely. 32 bit times should only overflow every 4 seconds or so on a fast machine. */ +static u32 * +advance_cpu_time_base (timing_wheel_t * w, u32 * expired_user_data) +{ + timing_wheel_level_t *l; + timing_wheel_elt_t *e; + u64 delta; + + w->stats.cpu_time_base_advances++; + delta = ((u64) 1 << w->n_wheel_elt_time_bits); + w->cpu_time_base += delta; + w->time_index_next_cpu_time_base_update += delta >> w->log2_clocks_per_bin; + + vec_foreach (l, w->levels) + { + uword wi; + /* *INDENT-OFF* */ + clib_bitmap_foreach (wi, l->occupancy_bitmap, ({ + vec_foreach (e, l->elts[wi]) + { + /* This should always be true since otherwise we would have already expired + this element. Note that in the second half of this function we need + to take care not to place the expired elements ourselves. */ + ASSERT (e->cpu_time_relative_to_base >= delta); + e->cpu_time_relative_to_base -= delta; + } + })); + /* *INDENT-ON* */ + } + + /* See which overflow elements fit now. */ + { + timing_wheel_overflow_elt_t *oe; + /* *INDENT-OFF* */ + pool_foreach (oe, w->overflow_pool, ({ + /* It fits now into 32 bits. */ + if (0 == ((oe->cpu_time - w->cpu_time_base) >> BITS (e->cpu_time_relative_to_base))) + { + u64 ti = oe->cpu_time >> w->log2_clocks_per_bin; + if (ti <= w->current_time_index) + { + /* This can happen when timing wheel is not advanced for a long time + (for example when at a gdb breakpoint for a while). */ + /* Note: the ti == w->current_time_index means it is also an expired timer */ + if (! elt_is_deleted (w, oe->user_data)) + vec_add1 (expired_user_data, oe->user_data); + } + else + timing_wheel_insert_helper (w, oe->cpu_time, oe->user_data); + pool_put (w->overflow_pool, oe); + } + })); + /* *INDENT-ON* */ + } + return expired_user_data; +} + +static u32 * +refill_level (timing_wheel_t * w, + uword level_index, + u64 advance_cpu_time, + uword from_wheel_index, + uword to_wheel_index, u32 * expired_user_data) +{ + timing_wheel_level_t *level; + timing_wheel_elt_t *to_insert = w->unexpired_elts_pending_insert; + u64 advance_time_index = advance_cpu_time >> w->log2_clocks_per_bin; + + vec_validate (w->stats.refills, level_index); + w->stats.refills[level_index] += 1; + + if (level_index + 1 >= vec_len (w->levels)) + goto done; + + level = vec_elt_at_index (w->levels, level_index + 1); + if (!level->occupancy_bitmap) + goto done; + + while (1) + { + timing_wheel_elt_t *e, *es; + + if (clib_bitmap_get_no_check + (level->occupancy_bitmap, from_wheel_index)) + { + es = level->elts[from_wheel_index]; + level->elts[from_wheel_index] = 0; + clib_bitmap_set_no_check (level->occupancy_bitmap, from_wheel_index, + 0); + + vec_foreach (e, es) + { + u64 e_time = elt_cpu_time (w, e); + u64 ti = e_time >> w->log2_clocks_per_bin; + if (ti <= advance_time_index) + { + validate_expired_elt (w, e, advance_cpu_time); + if (!elt_is_deleted (w, e->user_data)) + vec_add1 (expired_user_data, e->user_data); + } + else + vec_add1 (to_insert, e[0]); + } + free_elt_vector (w, es); + } + + if (from_wheel_index == to_wheel_index) + break; + + from_wheel_index = wheel_add (w, from_wheel_index + 1); + } + + timing_wheel_validate (w); +done: + w->unexpired_elts_pending_insert = to_insert; + return expired_user_data; +} + +/* Advance wheel and return any expired user data in vector. */ +u32 * +timing_wheel_advance (timing_wheel_t * w, u64 advance_cpu_time, + u32 * expired_user_data, + u64 * next_expiring_element_cpu_time) +{ + timing_wheel_level_t *level; + uword level_index, advance_rtime, advance_level_index, advance_wheel_index; + uword n_expired_user_data_before; + u64 current_time_index, advance_time_index; + + n_expired_user_data_before = vec_len (expired_user_data); + + /* Re-fill lower levels when time wraps. */ + current_time_index = w->current_time_index; + advance_time_index = advance_cpu_time >> w->log2_clocks_per_bin; + + { + u64 current_ti, advance_ti; + + current_ti = current_time_index >> w->log2_bins_per_wheel; + advance_ti = advance_time_index >> w->log2_bins_per_wheel; + + if (PREDICT_FALSE (current_ti != advance_ti)) + { + if (w->unexpired_elts_pending_insert) + _vec_len (w->unexpired_elts_pending_insert) = 0; + + level_index = 0; + while (current_ti != advance_ti) + { + uword c, a; + c = current_ti & (w->bins_per_wheel - 1); + a = advance_ti & (w->bins_per_wheel - 1); + if (c != a) + expired_user_data = refill_level (w, + level_index, + advance_cpu_time, + c, a, expired_user_data); + current_ti >>= w->log2_bins_per_wheel; + advance_ti >>= w->log2_bins_per_wheel; + level_index++; + } + } + } + + advance_level_index = + get_level_and_relative_time (w, advance_cpu_time, &advance_rtime); + advance_wheel_index = + rtime_to_wheel_index (w, advance_level_index, advance_rtime); + + /* Empty all occupied bins for entire levels that we advance past. */ + for (level_index = 0; level_index < advance_level_index; level_index++) + { + uword wi; + + if (level_index >= vec_len (w->levels)) + break; + + level = vec_elt_at_index (w->levels, level_index); + /* *INDENT-OFF* */ + clib_bitmap_foreach (wi, level->occupancy_bitmap, ({ + expired_user_data = expire_bin (w, level_index, wi, advance_cpu_time, + expired_user_data); + })); + /* *INDENT-ON* */ + } + + if (PREDICT_TRUE (level_index < vec_len (w->levels))) + { + uword wi; + level = vec_elt_at_index (w->levels, level_index); + wi = current_time_wheel_index (w, level_index); + if (level->occupancy_bitmap) + while (1) + { + if (clib_bitmap_get_no_check (level->occupancy_bitmap, wi)) + expired_user_data = + expire_bin (w, advance_level_index, wi, advance_cpu_time, + expired_user_data); + + /* When we jump out, we have already just expired the bin, + corresponding to advance_wheel_index */ + if (wi == advance_wheel_index) + break; + + wi = wheel_add (w, wi + 1); + } + } + + /* Advance current time index. */ + w->current_time_index = advance_time_index; + + if (vec_len (w->unexpired_elts_pending_insert) > 0) + { + timing_wheel_elt_t *e; + vec_foreach (e, w->unexpired_elts_pending_insert) insert_elt (w, e); + _vec_len (w->unexpired_elts_pending_insert) = 0; + } + + /* Don't advance until necessary. */ + /* However, if the timing_wheel_advance() hasn't been called for some time, + the while() loop will ensure multiple calls to advance_cpu_time_base() + in a row until the w->cpu_time_base is fresh enough. */ + while (PREDICT_FALSE + (advance_time_index >= w->time_index_next_cpu_time_base_update)) + expired_user_data = advance_cpu_time_base (w, expired_user_data); + + if (next_expiring_element_cpu_time) + { + u64 min_t; + + /* Anything expired? If so we need to recompute next expiring elt time. */ + if (vec_len (expired_user_data) == n_expired_user_data_before + && w->cached_min_cpu_time_on_wheel != 0ULL) + min_t = w->cached_min_cpu_time_on_wheel; + else + { + min_t = timing_wheel_next_expiring_elt_time (w); + w->cached_min_cpu_time_on_wheel = min_t; + } + + *next_expiring_element_cpu_time = min_t; + } + + return expired_user_data; +} + +u8 * +format_timing_wheel (u8 * s, va_list * va) +{ + timing_wheel_t *w = va_arg (*va, timing_wheel_t *); + int verbose = va_arg (*va, int); + uword indent = format_get_indent (s); + + s = format (s, "level 0: %.4e - %.4e secs, 2^%d - 2^%d clocks", + (f64) (1 << w->log2_clocks_per_bin) / w->cpu_clocks_per_second, + (f64) (1 << w->log2_clocks_per_wheel) / + w->cpu_clocks_per_second, w->log2_clocks_per_bin, + w->log2_clocks_per_wheel); + + if (verbose) + { + int l; + + s = format (s, "\n%Utime base advances %Ld, every %.4e secs", + format_white_space, indent + 2, + w->stats.cpu_time_base_advances, + (f64) ((u64) 1 << w->n_wheel_elt_time_bits) / + w->cpu_clocks_per_second); + + for (l = 0; l < vec_len (w->levels); l++) + s = format (s, "\n%Ulevel %d: refills %Ld", + format_white_space, indent + 2, + l, + l < + vec_len (w->stats.refills) ? w->stats. + refills[l] : (u64) 0); + } + + return s; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/timing_wheel.h b/src/vppinfra/timing_wheel.h new file mode 100644 index 00000000..7daea994 --- /dev/null +++ b/src/vppinfra/timing_wheel.h @@ -0,0 +1,155 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef included_clib_timing_wheel_h +#define included_clib_timing_wheel_h + +#include <vppinfra/format.h> + +typedef struct +{ + /* Time of this element in units cpu clock ticks relative to time + base. 32 bits should be large enough for serveral kilo-seconds + to elapse before we have to re-set time base. */ + u32 cpu_time_relative_to_base; + + /* User data to store in this bin. */ + u32 user_data; +} timing_wheel_elt_t; + +/* Overflow wheel elements where time does not fit into 32 bits. */ +typedef struct +{ + /* Absolute time of this element. */ + u64 cpu_time; + + /* User data to store in this bin. */ + u32 user_data; + + u32 pad; +} timing_wheel_overflow_elt_t; + +typedef struct +{ + /* 2^M bits: 1 means vector is non-zero else zero. */ + uword *occupancy_bitmap; + + /* 2^M element table of element vectors, one for each time bin. */ + timing_wheel_elt_t **elts; +} timing_wheel_level_t; + +typedef struct +{ + /* Vector of refill counts per level. */ + u64 *refills; + + /* Number of times cpu time base was rescaled. */ + u64 cpu_time_base_advances; +} timing_wheel_stats_t; + +typedef struct +{ + /* Each bin is a power of two clock ticks (N) + chosen so that 2^N >= min_sched_time. */ + u8 log2_clocks_per_bin; + + /* Wheels are 2^M bins where 2^(N+M) >= max_sched_time. */ + u8 log2_bins_per_wheel; + + /* N + M. */ + u8 log2_clocks_per_wheel; + + /* Number of bits to use in cpu_time_relative_to_base field + of timing_wheel_elt_t. */ + u8 n_wheel_elt_time_bits; + + /* 2^M. */ + u32 bins_per_wheel; + + /* 2^M - 1. */ + u32 bins_per_wheel_mask; + + timing_wheel_level_t *levels; + + timing_wheel_overflow_elt_t *overflow_pool; + + /* Free list of element vector so we can recycle old allocated vectors. */ + timing_wheel_elt_t **free_elt_vectors; + + timing_wheel_elt_t *unexpired_elts_pending_insert; + + /* Hash table of user data values which have been deleted but not yet re-inserted. */ + uword *deleted_user_data_hash; + + /* Enable validation for debugging. */ + u32 validate; + + /* Time index. Measures time in units of 2^N clock ticks from + when wheel starts. */ + u64 current_time_index; + + /* All times are 32 bit numbers relative to cpu_time_base. + So, roughly every 2^(32 + N) clocks we'll need to subtract from + all timing_wheel_elt_t times to make sure they never overflow. */ + u64 cpu_time_base; + + /* When current_time_index is >= this we update cpu_time_base + to avoid overflowing 32 bit cpu_time_relative_to_base + in timing_wheel_elt_t. */ + u64 time_index_next_cpu_time_base_update; + + /* Cached earliest element on wheel; 0 if not valid. */ + u64 cached_min_cpu_time_on_wheel; + + f64 min_sched_time, max_sched_time, cpu_clocks_per_second; + + timing_wheel_stats_t stats; +} timing_wheel_t; + +/* Initialization function. */ +void timing_wheel_init (timing_wheel_t * w, + u64 current_cpu_time, f64 cpu_clocks_per_second); + +/* Insert user data on wheel at given CPU time stamp. */ +void timing_wheel_insert (timing_wheel_t * w, u64 insert_cpu_time, + u32 user_data); + +/* Delete user data from wheel (until it is again inserted). */ +void timing_wheel_delete (timing_wheel_t * w, u32 user_data); + +/* Advance wheel and return any expired user data in vector. If non-zero + min_next_expiring_element_cpu_time will return a cpu time stamp + before which there are guaranteed to be no elements in the current wheel. */ +u32 *timing_wheel_advance (timing_wheel_t * w, u64 advance_cpu_time, + u32 * expired_user_data, + u64 * min_next_expiring_element_cpu_time); + +/* Returns absolute time in clock cycles of next expiring element. */ +u64 timing_wheel_next_expiring_elt_time (timing_wheel_t * w); + +/* Format a timing wheel. */ +format_function_t format_timing_wheel; + +/* Testing function to validate wheel. */ +void timing_wheel_validate (timing_wheel_t * w); + +#endif /* included_clib_timing_wheel_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_16t_1w_2048sl.c b/src/vppinfra/tw_timer_16t_1w_2048sl.c new file mode 100644 index 00000000..3f342045 --- /dev/null +++ b/src/vppinfra/tw_timer_16t_1w_2048sl.c @@ -0,0 +1,26 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vppinfra/error.h> +#include "tw_timer_16t_1w_2048sl.h" +#include "tw_timer_template.c" + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_16t_1w_2048sl.h b/src/vppinfra/tw_timer_16t_1w_2048sl.h new file mode 100644 index 00000000..761646b3 --- /dev/null +++ b/src/vppinfra/tw_timer_16t_1w_2048sl.h @@ -0,0 +1,52 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __included_tw_timer_16t_2w_512sl_h__ +#define __included_tw_timer_16t_2w_512sl_h__ + +/* ... So that a client app can create multiple wheel geometries */ +#undef TW_TIMER_WHEELS +#undef TW_SLOTS_PER_RING +#undef TW_RING_SHIFT +#undef TW_RING_MASK +#undef TW_TIMERS_PER_OBJECT +#undef LOG2_TW_TIMERS_PER_OBJECT +#undef TW_SUFFIX +#undef TW_OVERFLOW_VECTOR +#undef TW_FAST_WHEEL_BITMAP +#undef TW_TIMER_ALLOW_DUPLICATE_STOP +#undef TW_START_STOP_TRACE_SIZE + +#define TW_TIMER_WHEELS 1 +#define TW_SLOTS_PER_RING 2048 +#define TW_RING_SHIFT 11 +#define TW_RING_MASK (TW_SLOTS_PER_RING -1) +#define TW_TIMERS_PER_OBJECT 16 +#define LOG2_TW_TIMERS_PER_OBJECT 4 +#define TW_SUFFIX _16t_1w_2048sl +#define TW_FAST_WHEEL_BITMAP 0 +#define TW_TIMER_ALLOW_DUPLICATE_STOP 0 + +#include <vppinfra/tw_timer_template.h> + +#endif /* __included_tw_timer_16t_2w_512sl_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_16t_2w_512sl.c b/src/vppinfra/tw_timer_16t_2w_512sl.c new file mode 100644 index 00000000..ad1b9a4a --- /dev/null +++ b/src/vppinfra/tw_timer_16t_2w_512sl.c @@ -0,0 +1,26 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vppinfra/error.h> +#include "tw_timer_16t_2w_512sl.h" +#include "tw_timer_template.c" + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_16t_2w_512sl.h b/src/vppinfra/tw_timer_16t_2w_512sl.h new file mode 100644 index 00000000..029f529d --- /dev/null +++ b/src/vppinfra/tw_timer_16t_2w_512sl.h @@ -0,0 +1,52 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __included_tw_timer_16t_2w_512sl_h__ +#define __included_tw_timer_16t_2w_512sl_h__ + +/* ... So that a client app can create multiple wheel geometries */ +#undef TW_TIMER_WHEELS +#undef TW_SLOTS_PER_RING +#undef TW_RING_SHIFT +#undef TW_RING_MASK +#undef TW_TIMERS_PER_OBJECT +#undef LOG2_TW_TIMERS_PER_OBJECT +#undef TW_SUFFIX +#undef TW_OVERFLOW_VECTOR +#undef TW_FAST_WHEEL_BITMAP +#undef TW_TIMER_ALLOW_DUPLICATE_STOP +#undef TW_START_STOP_TRACE_SIZE + +#define TW_TIMER_WHEELS 2 +#define TW_SLOTS_PER_RING 512 +#define TW_RING_SHIFT 9 +#define TW_RING_MASK (TW_SLOTS_PER_RING -1) +#define TW_TIMERS_PER_OBJECT 16 +#define LOG2_TW_TIMERS_PER_OBJECT 4 +#define TW_SUFFIX _16t_2w_512sl +#define TW_FAST_WHEEL_BITMAP 0 +#define TW_TIMER_ALLOW_DUPLICATE_STOP 1 + +#include <vppinfra/tw_timer_template.h> + +#endif /* __included_tw_timer_16t_2w_512sl_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_1t_3w_1024sl_ov.c b/src/vppinfra/tw_timer_1t_3w_1024sl_ov.c new file mode 100644 index 00000000..8a65752c --- /dev/null +++ b/src/vppinfra/tw_timer_1t_3w_1024sl_ov.c @@ -0,0 +1,26 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vppinfra/error.h> +#include "tw_timer_1t_3w_1024sl_ov.h" +#include "tw_timer_template.c" + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_1t_3w_1024sl_ov.h b/src/vppinfra/tw_timer_1t_3w_1024sl_ov.h new file mode 100644 index 00000000..0b455e02 --- /dev/null +++ b/src/vppinfra/tw_timer_1t_3w_1024sl_ov.h @@ -0,0 +1,53 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __included_tw_timer_1t_3w_1024sl_ov_h__ +#define __included_tw_timer_1t_3w_1024sl_ov_h__ + +/* ... So that a client app can create multiple wheel geometries */ +#undef TW_TIMER_WHEELS +#undef TW_SLOTS_PER_RING +#undef TW_RING_SHIFT +#undef TW_RING_MASK +#undef TW_TIMERS_PER_OBJECT +#undef LOG2_TW_TIMERS_PER_OBJECT +#undef TW_SUFFIX +#undef TW_OVERFLOW_VECTOR +#undef TW_FAST_WHEEL_BITMAP +#undef TW_TIMER_ALLOW_DUPLICATE_STOP +#undef TW_START_STOP_TRACE_SIZE + +#define TW_TIMER_WHEELS 3 +#define TW_SLOTS_PER_RING 1024 +#define TW_RING_SHIFT 10 +#define TW_RING_MASK (TW_SLOTS_PER_RING -1) +#define TW_TIMERS_PER_OBJECT 1 +#define LOG2_TW_TIMERS_PER_OBJECT 0 +#define TW_SUFFIX _1t_3w_1024sl_ov +#define TW_OVERFLOW_VECTOR 1 +#define TW_FAST_WHEEL_BITMAP 1 +#define TW_TIMER_ALLOW_DUPLICATE_STOP 1 + +#include <vppinfra/tw_timer_template.h> + +#endif /* __included_tw_timer_1t_3w_1024sl_ov_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_2t_1w_2048sl.c b/src/vppinfra/tw_timer_2t_1w_2048sl.c new file mode 100644 index 00000000..79d293e1 --- /dev/null +++ b/src/vppinfra/tw_timer_2t_1w_2048sl.c @@ -0,0 +1,26 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vppinfra/error.h> +#include "tw_timer_2t_1w_2048sl.h" +#include "tw_timer_template.c" + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_2t_1w_2048sl.h b/src/vppinfra/tw_timer_2t_1w_2048sl.h new file mode 100644 index 00000000..6ae86688 --- /dev/null +++ b/src/vppinfra/tw_timer_2t_1w_2048sl.h @@ -0,0 +1,52 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __included_tw_timer_2t_1w_2048sl_h__ +#define __included_tw_timer_2t_1w_2048sl_h__ + +/* ... So that a client app can create multiple wheel geometries */ +#undef TW_TIMER_WHEELS +#undef TW_SLOTS_PER_RING +#undef TW_RING_SHIFT +#undef TW_RING_MASK +#undef TW_TIMERS_PER_OBJECT +#undef LOG2_TW_TIMERS_PER_OBJECT +#undef TW_SUFFIX +#undef TW_OVERFLOW_VECTOR +#undef TW_FAST_WHEEL_BITMAP +#undef TW_TIMER_ALLOW_DUPLICATE_STOP +#undef TW_START_STOP_TRACE_SIZE + +#define TW_TIMER_WHEELS 1 +#define TW_SLOTS_PER_RING 2048 +#define TW_RING_SHIFT 11 +#define TW_RING_MASK (TW_SLOTS_PER_RING -1) +#define TW_TIMERS_PER_OBJECT 2 +#define LOG2_TW_TIMERS_PER_OBJECT 1 +#define TW_SUFFIX _2t_1w_2048sl +#define TW_FAST_WHEEL_BITMAP 0 +#define TW_TIMER_ALLOW_DUPLICATE_STOP 0 + +#include <vppinfra/tw_timer_template.h> + +#endif /* __included_tw_timer_2t_1w_2048sl_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_4t_3w_256sl.c b/src/vppinfra/tw_timer_4t_3w_256sl.c new file mode 100644 index 00000000..73bb34b2 --- /dev/null +++ b/src/vppinfra/tw_timer_4t_3w_256sl.c @@ -0,0 +1,26 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vppinfra/error.h> +#include "tw_timer_4t_3w_256sl.h" +#include "tw_timer_template.c" + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_4t_3w_256sl.h b/src/vppinfra/tw_timer_4t_3w_256sl.h new file mode 100644 index 00000000..16c41bcd --- /dev/null +++ b/src/vppinfra/tw_timer_4t_3w_256sl.h @@ -0,0 +1,52 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __included_tw_timer_4t_3w_256sl_h__ +#define __included_tw_timer_4t_3w_256sl_h__ + +/* ... So that a client app can create multiple wheel geometries */ +#undef TW_TIMER_WHEELS +#undef TW_SLOTS_PER_RING +#undef TW_RING_SHIFT +#undef TW_RING_MASK +#undef TW_TIMERS_PER_OBJECT +#undef LOG2_TW_TIMERS_PER_OBJECT +#undef TW_SUFFIX +#undef TW_OVERFLOW_VECTOR +#undef TW_FAST_WHEEL_BITMAP +#undef TW_TIMER_ALLOW_DUPLICATE_STOP +#undef TW_START_STOP_TRACE_SIZE + +#define TW_TIMER_WHEELS 3 +#define TW_SLOTS_PER_RING 256 +#define TW_RING_SHIFT 8 +#define TW_RING_MASK (TW_SLOTS_PER_RING -1) +#define TW_TIMERS_PER_OBJECT 4 +#define LOG2_TW_TIMERS_PER_OBJECT 2 +#define TW_SUFFIX _4t_3w_256sl +#define TW_FAST_WHEEL_BITMAP 0 +#define TW_TIMER_ALLOW_DUPLICATE_STOP 0 + +#include <vppinfra/tw_timer_template.h> + +#endif /* __included_tw_timer_4t_3w_256sl_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_4t_3w_4sl_ov.c b/src/vppinfra/tw_timer_4t_3w_4sl_ov.c new file mode 100644 index 00000000..e2af7b5d --- /dev/null +++ b/src/vppinfra/tw_timer_4t_3w_4sl_ov.c @@ -0,0 +1,32 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/* + * This wheel geometry is not prima facie useful, except for testing + */ + +#if TW_TIMER_TEST_GEOMETRY > 0 +#include <vppinfra/error.h> +#include "tw_timer_4t_3w_4sl_ov.h" +#include "tw_timer_template.c" +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_4t_3w_4sl_ov.h b/src/vppinfra/tw_timer_4t_3w_4sl_ov.h new file mode 100644 index 00000000..845ffeac --- /dev/null +++ b/src/vppinfra/tw_timer_4t_3w_4sl_ov.h @@ -0,0 +1,53 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __included_tw_timer_4t_3w_4sl_ov_h__ +#define __included_tw_timer_4t_3w_4sl_ov_h__ + +/* ... So that a client app can create multiple wheel geometries */ +#undef TW_TIMER_WHEELS +#undef TW_SLOTS_PER_RING +#undef TW_RING_SHIFT +#undef TW_RING_MASK +#undef TW_TIMERS_PER_OBJECT +#undef LOG2_TW_TIMERS_PER_OBJECT +#undef TW_SUFFIX +#undef TW_OVERFLOW_VECTOR +#undef TW_FAST_WHEEL_BITMAP +#undef TW_TIMER_ALLOW_DUPLICATE_STOP +#undef TW_START_STOP_TRACE_SIZE + +#define TW_TIMER_WHEELS 3 +#define TW_SLOTS_PER_RING 4 +#define TW_RING_SHIFT 2 +#define TW_RING_MASK (TW_SLOTS_PER_RING -1) +#define TW_TIMERS_PER_OBJECT 4 +#define LOG2_TW_TIMERS_PER_OBJECT 2 +#define TW_SUFFIX _4t_3w_4sl_ov +#define TW_OVERFLOW_VECTOR 1 +#define TW_FAST_WHEEL_BITMAP 0 +#define TW_TIMER_ALLOW_DUPLICATE_STOP 0 + +#include <vppinfra/tw_timer_template.h> + +#endif /* __included_tw_timer_4t_3w_256sl_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_template.c b/src/vppinfra/tw_timer_template.c new file mode 100644 index 00000000..abad3718 --- /dev/null +++ b/src/vppinfra/tw_timer_template.c @@ -0,0 +1,832 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/** @file + * @brief TW timer implementation TEMPLATE ONLY, do not compile directly + * + * + */ +#if TW_START_STOP_TRACE_SIZE > 0 + +void TW (tw_timer_trace) (TWT (tw_timer_wheel) * tw, u32 timer_id, + u32 pool_index, u32 handle) +{ + TWT (trace) * t = &tw->traces[tw->trace_index]; + + t->timer_id = timer_id; + t->pool_index = pool_index; + t->handle = handle; + + tw->trace_index++; + if (tw->trace_index == TW_START_STOP_TRACE_SIZE) + { + tw->trace_index = 0; + tw->trace_wrapped++; + } +} + +void TW (tw_search_trace) (TWT (tw_timer_wheel) * tw, u32 handle) +{ + u32 i, start_pos; + TWT (trace) * t; + char *s = "bogus!"; + + /* reverse search for the supplied handle */ + + start_pos = tw->trace_index; + if (start_pos == 0) + start_pos = TW_START_STOP_TRACE_SIZE - 1; + else + start_pos--; + + for (i = start_pos; i > 0; i--) + { + t = &tw->traces[i]; + if (t->handle == handle) + { + switch (t->timer_id) + { + case 0xFF: + s = "stopped"; + break; + case 0xFE: + s = "expired"; + break; + default: + s = "started"; + break; + } + fformat (stderr, "handle 0x%x (%d) %s at trace %d\n", + handle, handle, s, i); + } + } + if (tw->trace_wrapped > 0) + { + for (i = TW_START_STOP_TRACE_SIZE; i >= tw->trace_index; i--) + { + t = &tw->traces[i]; + if (t->handle == handle) + { + switch (t->timer_id) + { + case 0xFF: + s = "stopped"; + break; + case 0xFE: + s = "expired"; + break; + default: + s = "started"; + break; + } + fformat (stderr, "handle 0x%x (%d) %s at trace %d\n", + handle, handle, s, i); + } + } + } +} +#endif /* TW_START_STOP_TRACE_SIZE > 0 */ + +static inline u32 +TW (make_internal_timer_handle) (u32 pool_index, u32 timer_id) +{ + u32 handle; + + ASSERT (timer_id < TW_TIMERS_PER_OBJECT); +#if LOG2_TW_TIMERS_PER_OBJECT > 0 + ASSERT (pool_index < (1 << (32 - LOG2_TW_TIMERS_PER_OBJECT))); + + handle = (timer_id << (32 - LOG2_TW_TIMERS_PER_OBJECT)) | (pool_index); +#else + handle = pool_index; +#endif + return handle; +} + +static inline void +timer_addhead (TWT (tw_timer) * pool, u32 head_index, u32 new_index) +{ + TWT (tw_timer) * head = pool_elt_at_index (pool, head_index); + TWT (tw_timer) * old_first; + u32 old_first_index; + TWT (tw_timer) * new; + + new = pool_elt_at_index (pool, new_index); + + if (PREDICT_FALSE (head->next == head_index)) + { + head->next = head->prev = new_index; + new->next = new->prev = head_index; + return; + } + + old_first_index = head->next; + old_first = pool_elt_at_index (pool, old_first_index); + + new->next = old_first_index; + new->prev = old_first->prev; + old_first->prev = new_index; + head->next = new_index; +} + +static inline void +timer_remove (TWT (tw_timer) * pool, u32 index) +{ + TWT (tw_timer) * elt = pool_elt_at_index (pool, index); + TWT (tw_timer) * next_elt, *prev_elt; + + ASSERT (elt->user_handle != ~0); + + next_elt = pool_elt_at_index (pool, elt->next); + prev_elt = pool_elt_at_index (pool, elt->prev); + + next_elt->prev = elt->prev; + prev_elt->next = elt->next; + + elt->prev = elt->next = ~0; +} + +/** + * @brief Start a Tw Timer + * @param tw_timer_wheel_t * tw timer wheel object pointer + * @param u32 pool_index user pool index, presumably for a tw session + * @param u32 timer_id app-specific timer ID. 4 bits. + * @param u64 interval timer interval in ticks + * @returns handle needed to cancel the timer + */ +u32 +TW (tw_timer_start) (TWT (tw_timer_wheel) * tw, u32 pool_index, u32 timer_id, + u64 interval) +{ +#if TW_TIMER_WHEELS > 1 + u16 slow_ring_offset; + u32 carry; +#endif +#if TW_TIMER_WHEELS > 2 + u16 glacier_ring_offset; +#endif +#if TW_OVERFLOW_VECTOR > 0 + u64 interval_plus_time_to_wrap, triple_wrap_mask; +#endif + u16 fast_ring_offset; + tw_timer_wheel_slot_t *ts; + TWT (tw_timer) * t; + + ASSERT (interval); + + pool_get (tw->timers, t); + memset (t, 0xff, sizeof (*t)); + + t->user_handle = TW (make_internal_timer_handle) (pool_index, timer_id); + + /* Factor interval into 1..3 wheel offsets */ +#if TW_TIMER_WHEELS > 2 +#if TW_OVERFLOW_VECTOR > 0 + /* + * This is tricky. Put a timer onto the overflow + * vector if the interval PLUS the time + * until the next triple-wrap exceeds one full revolution + * of all three wheels. + */ + triple_wrap_mask = (1 << (3 * TW_RING_SHIFT)) - 1; + interval_plus_time_to_wrap = + interval + (tw->current_tick & triple_wrap_mask); + if ((interval_plus_time_to_wrap >= 1 << (3 * TW_RING_SHIFT))) + { + t->expiration_time = tw->current_tick + interval; + ts = &tw->overflow; + timer_addhead (tw->timers, ts->head_index, t - tw->timers); +#if TW_START_STOP_TRACE_SIZE > 0 + TW (tw_timer_trace) (tw, timer_id, pool_index, t - tw->timers); +#endif + return t - tw->timers; + } +#endif + + glacier_ring_offset = interval >> (2 * TW_RING_SHIFT); + ASSERT ((u64) glacier_ring_offset < TW_SLOTS_PER_RING); + interval -= (((u64) glacier_ring_offset) << (2 * TW_RING_SHIFT)); +#endif +#if TW_TIMER_WHEELS > 1 + slow_ring_offset = interval >> TW_RING_SHIFT; + ASSERT ((u64) slow_ring_offset < TW_SLOTS_PER_RING); + interval -= (((u64) slow_ring_offset) << TW_RING_SHIFT); +#endif + fast_ring_offset = interval & TW_RING_MASK; + + /* + * Account for the current wheel positions(s) + * This is made slightly complicated by the fact that the current + * index vector will contain (TW_SLOTS_PER_RING, ...) when + * the actual position is (0, ...) + */ + + fast_ring_offset += tw->current_index[TW_TIMER_RING_FAST] & TW_RING_MASK; + +#if TW_TIMER_WHEELS > 1 + carry = fast_ring_offset >= TW_SLOTS_PER_RING ? 1 : 0; + fast_ring_offset %= TW_SLOTS_PER_RING; + slow_ring_offset += (tw->current_index[TW_TIMER_RING_SLOW] & TW_RING_MASK) + + carry; + carry = slow_ring_offset >= TW_SLOTS_PER_RING ? 1 : 0; + slow_ring_offset %= TW_SLOTS_PER_RING; +#endif + +#if TW_TIMER_WHEELS > 2 + glacier_ring_offset += + (tw->current_index[TW_TIMER_RING_GLACIER] & TW_RING_MASK) + carry; + glacier_ring_offset %= TW_SLOTS_PER_RING; +#endif + +#if TW_TIMER_WHEELS > 2 + if (glacier_ring_offset != + (tw->current_index[TW_TIMER_RING_GLACIER] & TW_RING_MASK)) + { + /* We'll need slow and fast ring offsets later */ + t->slow_ring_offset = slow_ring_offset; + t->fast_ring_offset = fast_ring_offset; + + ts = &tw->w[TW_TIMER_RING_GLACIER][glacier_ring_offset]; + + timer_addhead (tw->timers, ts->head_index, t - tw->timers); +#if TW_START_STOP_TRACE_SIZE > 0 + TW (tw_timer_trace) (tw, timer_id, pool_index, t - tw->timers); +#endif + return t - tw->timers; + } +#endif + +#if TW_TIMER_WHEELS > 1 + /* Timer expires more than 51.2 seconds from now? */ + if (slow_ring_offset != + (tw->current_index[TW_TIMER_RING_SLOW] & TW_RING_MASK)) + { + /* We'll need the fast ring offset later... */ + t->fast_ring_offset = fast_ring_offset; + + ts = &tw->w[TW_TIMER_RING_SLOW][slow_ring_offset]; + + timer_addhead (tw->timers, ts->head_index, t - tw->timers); +#if TW_START_STOP_TRACE_SIZE > 0 + TW (tw_timer_trace) (tw, timer_id, pool_index, t - tw->timers); +#endif + return t - tw->timers; + } +#else + fast_ring_offset %= TW_SLOTS_PER_RING; +#endif + + /* Timer expires less than one fast-ring revolution from now */ + ts = &tw->w[TW_TIMER_RING_FAST][fast_ring_offset]; + + timer_addhead (tw->timers, ts->head_index, t - tw->timers); + +#if TW_FAST_WHEEL_BITMAP + tw->fast_slot_bitmap = clib_bitmap_set (tw->fast_slot_bitmap, + fast_ring_offset, 1); +#endif +#if TW_START_STOP_TRACE_SIZE > 0 + TW (tw_timer_trace) (tw, timer_id, pool_index, t - tw->timers); +#endif + return t - tw->timers; +} + +#if TW_TIMER_SCAN_FOR_HANDLE > 0 +int TW (scan_for_handle) (TWT (tw_timer_wheel) * tw, u32 handle) +{ + int i, j; + tw_timer_wheel_slot_t *ts; + TWT (tw_timer) * t, *head; + u32 next_index; + int rv = 0; + + for (i = 0; i < TW_TIMER_WHEELS; i++) + { + for (j = 0; j < TW_SLOTS_PER_RING; j++) + { + ts = &tw->w[i][j]; + head = pool_elt_at_index (tw->timers, ts->head_index); + next_index = head->next; + + while (next_index != ts->head_index) + { + t = pool_elt_at_index (tw->timers, next_index); + if (next_index == handle) + { + clib_warning ("handle %d found in ring %d slot %d", + handle, i, j); + clib_warning ("user handle 0x%x", t->user_handle); + rv = 1; + } + next_index = t->next; + } + } + } + return rv; +} +#endif /* TW_TIMER_SCAN_FOR_HANDLE */ + +/** + * @brief Stop a tw timer + * @param tw_timer_wheel_t * tw timer wheel object pointer + * @param u32 handle timer cancellation returned by tw_timer_start + */ +void TW (tw_timer_stop) (TWT (tw_timer_wheel) * tw, u32 handle) +{ + TWT (tw_timer) * t; + +#if TW_TIMER_ALLOW_DUPLICATE_STOP + /* + * A vlib process may have its timer expire, and receive + * an event before the expiration is processed. + * That results in a duplicate tw_timer_stop. + */ + if (pool_is_free_index (tw->timers, handle)) + return; +#endif +#if TW_START_STOP_TRACE_SIZE > 0 + TW (tw_timer_trace) (tw, ~0, ~0, handle); +#endif + + t = pool_elt_at_index (tw->timers, handle); + + /* in case of idiotic handle (e.g. passing a listhead index) */ + ASSERT (t->user_handle != ~0); + + timer_remove (tw->timers, handle); + + pool_put_index (tw->timers, handle); +} + +/** + * @brief Initialize a tw timer wheel template instance + * @param tw_timer_wheel_t * tw timer wheel object pointer + * @param void * expired_timer_callback. Passed a u32 * vector of + * expired timer handles. The callback is optional. + * @param f64 timer_interval_in_seconds + */ +void +TW (tw_timer_wheel_init) (TWT (tw_timer_wheel) * tw, + void *expired_timer_callback, + f64 timer_interval_in_seconds, u32 max_expirations) +{ + int ring, slot; + tw_timer_wheel_slot_t *ts; + TWT (tw_timer) * t; + memset (tw, 0, sizeof (*tw)); + tw->expired_timer_callback = expired_timer_callback; + tw->max_expirations = max_expirations; + if (timer_interval_in_seconds == 0.0) + { + clib_warning ("timer interval is zero"); + abort (); + } + tw->timer_interval = timer_interval_in_seconds; + tw->ticks_per_second = 1.0 / timer_interval_in_seconds; + tw->first_expires_tick = ~0ULL; + + vec_validate (tw->expired_timer_handles, 0); + _vec_len (tw->expired_timer_handles) = 0; + + for (ring = 0; ring < TW_TIMER_WHEELS; ring++) + { + for (slot = 0; slot < TW_SLOTS_PER_RING; slot++) + { + ts = &tw->w[ring][slot]; + pool_get (tw->timers, t); + memset (t, 0xff, sizeof (*t)); + t->next = t->prev = t - tw->timers; + ts->head_index = t - tw->timers; + } + } + +#if TW_OVERFLOW_VECTOR > 0 + ts = &tw->overflow; + pool_get (tw->timers, t); + memset (t, 0xff, sizeof (*t)); + t->next = t->prev = t - tw->timers; + ts->head_index = t - tw->timers; +#endif +} + +/** + * @brief Free a tw timer wheel template instance + * @param tw_timer_wheel_t * tw timer wheel object pointer + */ +void TW (tw_timer_wheel_free) (TWT (tw_timer_wheel) * tw) +{ + int i, j; + tw_timer_wheel_slot_t *ts; + TWT (tw_timer) * head, *t; + u32 next_index; + + for (i = 0; i < TW_TIMER_WHEELS; i++) + { + for (j = 0; j < TW_SLOTS_PER_RING; j++) + { + ts = &tw->w[i][j]; + head = pool_elt_at_index (tw->timers, ts->head_index); + next_index = head->next; + + while (next_index != ts->head_index) + { + t = pool_elt_at_index (tw->timers, next_index); + next_index = t->next; + pool_put (tw->timers, t); + } + pool_put (tw->timers, head); + } + } + +#if TW_OVERFLOW_VECVOR > 0 + ts = &tw->overflow; + head = pool_elt_at_index (tw->timers, ts->head_index); + next_index = head->next; + + while (next_index != ts->head_index) + { + t = pool_elt_at_index (tw->timers, next_index); + next_index = t->next; + pool_put (tw->timers, t); + } + pool_put (tw->timers, head); +#endif + + memset (tw, 0, sizeof (*tw)); +} + +/** + * @brief Advance a tw timer wheel. Calls the expired timer callback + * as needed. This routine should be called once every timer_interval seconds + * @param tw_timer_wheel_t * tw timer wheel template instance pointer + * @param f64 now the current time, e.g. from vlib_time_now(vm) + * @returns u32 * vector of expired user handles + */ +static inline + u32 * TW (tw_timer_expire_timers_internal) (TWT (tw_timer_wheel) * tw, + f64 now, + u32 * callback_vector_arg) +{ + u32 nticks, i; + tw_timer_wheel_slot_t *ts; + TWT (tw_timer) * t, *head; + u32 *callback_vector; + u32 fast_wheel_index; + u32 next_index; + u32 slow_wheel_index __attribute__ ((unused)); + u32 glacier_wheel_index __attribute__ ((unused)); + + /* Shouldn't happen */ + if (PREDICT_FALSE (now < tw->next_run_time)) + return callback_vector_arg; + + /* Number of ticks which have occurred */ + nticks = tw->ticks_per_second * (now - tw->last_run_time); + if (nticks == 0) + return callback_vector_arg; + + /* Remember when we ran, compute next runtime */ + tw->next_run_time = (now + tw->timer_interval); + + if (callback_vector_arg == 0) + { + _vec_len (tw->expired_timer_handles) = 0; + callback_vector = tw->expired_timer_handles; + } + else + callback_vector = callback_vector_arg; + + for (i = 0; i < nticks; i++) + { + fast_wheel_index = tw->current_index[TW_TIMER_RING_FAST]; + if (TW_TIMER_WHEELS > 1) + slow_wheel_index = tw->current_index[TW_TIMER_RING_SLOW]; + if (TW_TIMER_WHEELS > 2) + glacier_wheel_index = tw->current_index[TW_TIMER_RING_GLACIER]; + +#if TW_OVERFLOW_VECTOR > 0 + /* Triple odometer-click? Process the overflow vector... */ + if (PREDICT_FALSE (fast_wheel_index == TW_SLOTS_PER_RING + && slow_wheel_index == TW_SLOTS_PER_RING + && glacier_wheel_index == TW_SLOTS_PER_RING)) + { + u64 interval; + u32 new_glacier_ring_offset, new_slow_ring_offset; + u32 new_fast_ring_offset; + + ts = &tw->overflow; + head = pool_elt_at_index (tw->timers, ts->head_index); + next_index = head->next; + + /* Make slot empty */ + head->next = head->prev = ts->head_index; + + /* traverse slot, place timers wherever they go */ + while (next_index != head - tw->timers) + { + t = pool_elt_at_index (tw->timers, next_index); + next_index = t->next; + + /* Remove from the overflow vector (hammer) */ + t->next = t->prev = ~0; + + ASSERT (t->expiration_time >= tw->current_tick); + + interval = t->expiration_time - tw->current_tick; + + /* Right back onto the overflow vector? */ + if (interval >= (1 << (3 * TW_RING_SHIFT))) + { + ts = &tw->overflow; + timer_addhead (tw->timers, ts->head_index, t - tw->timers); + continue; + } + /* Compute ring offsets */ + new_glacier_ring_offset = interval >> (2 * TW_RING_SHIFT); + + interval -= (new_glacier_ring_offset << (2 * TW_RING_SHIFT)); + + /* Note: the wheels are at (0,0,0), no add-with-carry needed */ + new_slow_ring_offset = interval >> TW_RING_SHIFT; + interval -= (new_slow_ring_offset << TW_RING_SHIFT); + new_fast_ring_offset = interval & TW_RING_MASK; + t->slow_ring_offset = new_slow_ring_offset; + t->fast_ring_offset = new_fast_ring_offset; + + /* Timer expires Right Now */ + if (PREDICT_FALSE (t->slow_ring_offset == 0 && + t->fast_ring_offset == 0 && + new_glacier_ring_offset == 0)) + { + vec_add1 (callback_vector, t->user_handle); +#if TW_START_STOP_TRACE_SIZE > 0 + TW (tw_timer_trace) (tw, 0xfe, t->user_handle, + t - tw->timers); +#endif + pool_put (tw->timers, t); + } + /* Timer moves to the glacier ring */ + else if (new_glacier_ring_offset) + { + ts = &tw->w[TW_TIMER_RING_GLACIER][new_glacier_ring_offset]; + timer_addhead (tw->timers, ts->head_index, t - tw->timers); + } + /* Timer moves to the slow ring */ + else if (t->slow_ring_offset) + { + /* Add to slow ring */ + ts = &tw->w[TW_TIMER_RING_SLOW][t->slow_ring_offset]; + timer_addhead (tw->timers, ts->head_index, t - tw->timers); + } + /* Timer timer moves to the fast ring */ + else + { + ts = &tw->w[TW_TIMER_RING_FAST][t->fast_ring_offset]; + timer_addhead (tw->timers, ts->head_index, t - tw->timers); +#if TW_FAST_WHEEL_BITMAP + tw->fast_slot_bitmap = + clib_bitmap_set (tw->fast_slot_bitmap, + t->fast_ring_offset, 1); +#endif + } + } + } +#endif + +#if TW_TIMER_WHEELS > 2 + /* + * Double odometer-click? Process one slot in the glacier ring... + */ + if (PREDICT_FALSE (fast_wheel_index == TW_SLOTS_PER_RING + && slow_wheel_index == TW_SLOTS_PER_RING)) + { + glacier_wheel_index %= TW_SLOTS_PER_RING; + ts = &tw->w[TW_TIMER_RING_GLACIER][glacier_wheel_index]; + + head = pool_elt_at_index (tw->timers, ts->head_index); + next_index = head->next; + + /* Make slot empty */ + head->next = head->prev = ts->head_index; + + /* traverse slot, deal timers into slow ring */ + while (next_index != head - tw->timers) + { + t = pool_elt_at_index (tw->timers, next_index); + next_index = t->next; + + /* Remove from glacier ring slot (hammer) */ + t->next = t->prev = ~0; + + /* Timer expires Right Now */ + if (PREDICT_FALSE (t->slow_ring_offset == 0 && + t->fast_ring_offset == 0)) + { + vec_add1 (callback_vector, t->user_handle); +#if TW_START_STOP_TRACE_SIZE > 0 + TW (tw_timer_trace) (tw, 0xfe, t->user_handle, + t - tw->timers); +#endif + pool_put (tw->timers, t); + } + /* Timer expires during slow-wheel tick 0 */ + else if (PREDICT_FALSE (t->slow_ring_offset == 0)) + { + ts = &tw->w[TW_TIMER_RING_FAST][t->fast_ring_offset]; + timer_addhead (tw->timers, ts->head_index, t - tw->timers); +#if TW_FAST_WHEEL_BITMAP + tw->fast_slot_bitmap = + clib_bitmap_set (tw->fast_slot_bitmap, + t->fast_ring_offset, 1); +#endif + } + else /* typical case */ + { + /* Add to slow ring */ + ts = &tw->w[TW_TIMER_RING_SLOW][t->slow_ring_offset]; + timer_addhead (tw->timers, ts->head_index, t - tw->timers); + } + } + } +#endif + +#if TW_TIMER_WHEELS > 1 + /* + * Single odometer-click? Process a slot in the slow ring, + */ + if (PREDICT_FALSE (fast_wheel_index == TW_SLOTS_PER_RING)) + { + slow_wheel_index %= TW_SLOTS_PER_RING; + ts = &tw->w[TW_TIMER_RING_SLOW][slow_wheel_index]; + + head = pool_elt_at_index (tw->timers, ts->head_index); + next_index = head->next; + + /* Make slot empty */ + head->next = head->prev = ts->head_index; + + /* traverse slot, deal timers into fast ring */ + while (next_index != head - tw->timers) + { + t = pool_elt_at_index (tw->timers, next_index); + next_index = t->next; + + /* Remove from sloe ring slot (hammer) */ + t->next = t->prev = ~0; + + /* Timer expires Right Now */ + if (PREDICT_FALSE (t->fast_ring_offset == 0)) + { + vec_add1 (callback_vector, t->user_handle); +#if TW_START_STOP_TRACE_SIZE > 0 + TW (tw_timer_trace) (tw, 0xfe, t->user_handle, + t - tw->timers); +#endif + pool_put (tw->timers, t); + } + else /* typical case */ + { + /* Add to fast ring */ + ts = &tw->w[TW_TIMER_RING_FAST][t->fast_ring_offset]; + timer_addhead (tw->timers, ts->head_index, t - tw->timers); +#if TW_FAST_WHEEL_BITMAP + tw->fast_slot_bitmap = + clib_bitmap_set (tw->fast_slot_bitmap, + t->fast_ring_offset, 1); +#endif + } + } + } +#endif + + /* Handle the fast ring */ + fast_wheel_index %= TW_SLOTS_PER_RING; + ts = &tw->w[TW_TIMER_RING_FAST][fast_wheel_index]; + + head = pool_elt_at_index (tw->timers, ts->head_index); + next_index = head->next; + + /* Make slot empty */ + head->next = head->prev = ts->head_index; + + /* Construct vector of expired timer handles to give the user */ + while (next_index != ts->head_index) + { + t = pool_elt_at_index (tw->timers, next_index); + next_index = t->next; + vec_add1 (callback_vector, t->user_handle); +#if TW_START_STOP_TRACE_SIZE > 0 + TW (tw_timer_trace) (tw, 0xfe, t->user_handle, t - tw->timers); +#endif + pool_put (tw->timers, t); + } + + /* If any timers expired, tell the user */ + if (callback_vector_arg == 0 && vec_len (callback_vector)) + { + /* The callback is optional. We return the u32 * handle vector */ + if (tw->expired_timer_callback) + tw->expired_timer_callback (callback_vector); + tw->expired_timer_handles = callback_vector; + } + +#if TW_FAST_WHEEL_BITMAP + tw->fast_slot_bitmap = clib_bitmap_set (tw->fast_slot_bitmap, + fast_wheel_index, 0); +#endif + + tw->current_tick++; + fast_wheel_index++; + tw->current_index[TW_TIMER_RING_FAST] = fast_wheel_index; + +#if TW_TIMER_WHEELS > 1 + if (PREDICT_FALSE (fast_wheel_index == TW_SLOTS_PER_RING)) + slow_wheel_index++; + tw->current_index[TW_TIMER_RING_SLOW] = slow_wheel_index; +#endif + +#if TW_TIMER_WHEELS > 2 + if (PREDICT_FALSE (slow_wheel_index == TW_SLOTS_PER_RING)) + glacier_wheel_index++; + tw->current_index[TW_TIMER_RING_GLACIER] = glacier_wheel_index; +#endif + + if (vec_len (callback_vector) >= tw->max_expirations) + break; + } + + if (callback_vector_arg == 0) + tw->expired_timer_handles = callback_vector; + + tw->last_run_time += i * tw->timer_interval; + return callback_vector; +} + +u32 *TW (tw_timer_expire_timers) (TWT (tw_timer_wheel) * tw, f64 now) +{ + return TW (tw_timer_expire_timers_internal) (tw, now, 0 /* no vector */ ); +} + +u32 *TW (tw_timer_expire_timers_vec) (TWT (tw_timer_wheel) * tw, f64 now, + u32 * vec) +{ + return TW (tw_timer_expire_timers_internal) (tw, now, vec); +} + +#if TW_FAST_WHEEL_BITMAP +/** Returns an approximation to the first timer expiration in + * timer-ticks from "now". To avoid wasting an unjustifiable + * amount of time on the problem, we maintain an approximate fast-wheel slot + * occupancy bitmap. We don't worry about clearing fast wheel bits + * when timers are removed from fast wheel slots. + */ + +u32 TW (tw_timer_first_expires_in_ticks) (TWT (tw_timer_wheel) * tw) +{ + u32 first_expiring_index, fast_ring_index; + i32 delta; + + if (clib_bitmap_is_zero (tw->fast_slot_bitmap)) + return TW_SLOTS_PER_RING; + + fast_ring_index = tw->current_index[TW_TIMER_RING_FAST]; + if (fast_ring_index == TW_SLOTS_PER_RING) + fast_ring_index = 0; + + first_expiring_index = clib_bitmap_next_set (tw->fast_slot_bitmap, + fast_ring_index); + if (first_expiring_index == ~0 && fast_ring_index != 0) + first_expiring_index = clib_bitmap_first_set (tw->fast_slot_bitmap); + + ASSERT (first_expiring_index != ~0); + + delta = (i32) first_expiring_index - (i32) fast_ring_index; + if (delta < 0) + delta += TW_SLOTS_PER_RING; + + ASSERT (delta >= 0); + + return (u32) delta; +} + +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/tw_timer_template.h b/src/vppinfra/tw_timer_template.h new file mode 100644 index 00000000..0217644d --- /dev/null +++ b/src/vppinfra/tw_timer_template.h @@ -0,0 +1,267 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef TW_SUFFIX +#error do not include tw_timer_template.h directly +#endif + +#include <vppinfra/clib.h> +#include <vppinfra/pool.h> +#include <vppinfra/bitmap.h> + +#ifndef _twt +#define _twt(a,b) a##b##_t +#define __twt(a,b) _twt(a,b) +#define TWT(a) __twt(a,TW_SUFFIX) + +#define _tw(a,b) a##b +#define __tw(a,b) _tw(a,b) +#define TW(a) __tw(a,TW_SUFFIX) +#endif + +/** @file + @brief TW timer template header file, do not compile directly + +Instantiation of tw_timer_template.h generates named structures to +implement specific timer wheel geometries. Choices include: number of +timer wheels (currently, 1 or 2), number of slots per ring (a power of +two), and the number of timers per "object handle". + +Internally, user object/timer handles are 32-bit integers, so if one +selects 16 timers/object (4 bits), the resulting timer wheel handle is +limited to 2**28 objects. + +Here are the specific settings required to generate a single 2048 slot +wheel which supports 2 timers per object: + + #define TW_TIMER_WHEELS 1 + #define TW_SLOTS_PER_RING 2048 + #define TW_RING_SHIFT 11 + #define TW_RING_MASK (TW_SLOTS_PER_RING -1) + #define TW_TIMERS_PER_OBJECT 2 + #define LOG2_TW_TIMERS_PER_OBJECT 1 + #define TW_SUFFIX _2t_1w_2048sl + +See tw_timer_2t_1w_2048sl.h for a complete +example. + +tw_timer_template.h is not intended to be #included directly. Client +codes can include multiple timer geometry header files, although +extreme caution would required to use the TW and TWT macros in such a +case. + +API usage example: + +Initialize a two-timer, single 2048-slot wheel w/ a 1-second +timer granularity: + + tw_timer_wheel_init_2t_1w_2048sl (&tm->single_wheel, + expired_timer_single_callback, + 1.0 / * timer interval * / ); + +Start a timer: + + handle = tw_timer_start_2t_1w_2048sl (&tm->single_wheel, elt_index, + [0 | 1] / * timer id * / , + expiration_time_in_u32_ticks); + +Stop a timer: + + tw_timer_stop_2t_1w_2048sl (&tm->single_wheel, handle); + +Expired timer callback: + + static void + expired_timer_single_callback (u32 * expired_timers) + { + int i; + u32 pool_index, timer_id; + tw_timer_test_elt_t *e; + tw_timer_test_main_t *tm = &tw_timer_test_main; + + for (i = 0; i < vec_len (expired_timers); + { + pool_index = expired_timers[i] & 0x7FFFFFFF; + timer_id = expired_timers[i] >> 31; + + ASSERT (timer_id == 1); + + e = pool_elt_at_index (tm->test_elts, pool_index); + + if (e->expected_to_expire != tm->single_wheel.current_tick) + { + fformat (stdout, "[%d] expired at %d not %d\n", + e - tm->test_elts, tm->single_wheel.current_tick, + e->expected_to_expire); + } + pool_put (tm->test_elts, e); + } + } + */ + +#if (TW_TIMER_WHEELS != 1 && TW_TIMER_WHEELS != 2 && TW_TIMER_WHEELS != 3) +#error TW_TIMER_WHEELS must be 1, 2 or 3 +#endif + +typedef struct +{ + /** next, previous pool indices */ + u32 next; + u32 prev; + + union + { + struct + { +#if (TW_TIMER_WHEELS == 3) + /** fast ring offset, only valid in the slow ring */ + u16 fast_ring_offset; + /** slow ring offset, only valid in the glacier ring */ + u16 slow_ring_offset; +#endif +#if (TW_TIMER_WHEELS == 2) + /** fast ring offset, only valid in the slow ring */ + u16 fast_ring_offset; + /** slow ring offset, only valid in the glacier ring */ + u16 pad; +#endif + }; + +#if (TW_OVERFLOW_VECTOR > 0) + u64 expiration_time; +#endif + }; + + /** user timer handle */ + u32 user_handle; +} TWT (tw_timer); + +/* + * These structures ar used by all geometries, + * so they need a private #include block... + */ +#ifndef __defined_tw_timer_wheel_slot__ +#define __defined_tw_timer_wheel_slot__ +typedef struct +{ + /** Listhead of timers which expire in this interval */ + u32 head_index; +} tw_timer_wheel_slot_t; +typedef enum +{ + /** Fast timer ring ID */ + TW_TIMER_RING_FAST, + /** Slow timer ring ID */ + TW_TIMER_RING_SLOW, + /** Glacier ring ID */ + TW_TIMER_RING_GLACIER, +} tw_ring_index_t; +#endif /* __defined_tw_timer_wheel_slot__ */ + +typedef CLIB_PACKED (struct + { + u8 timer_id; + u32 pool_index; + u32 handle; + }) TWT (trace); + +typedef struct +{ + /** Timer pool */ + TWT (tw_timer) * timers; + + /** Next time the wheel should run */ + f64 next_run_time; + + /** Last time the wheel ran */ + f64 last_run_time; + + /** Timer ticks per second */ + f64 ticks_per_second; + + /** Timer interval, also needed to avoid fp divide in speed path */ + f64 timer_interval; + + /** current tick */ + u64 current_tick; + + /** first expiration time */ + u64 first_expires_tick; + + /** current wheel indices */ + u32 current_index[TW_TIMER_WHEELS]; + + /** wheel arrays */ + tw_timer_wheel_slot_t w[TW_TIMER_WHEELS][TW_SLOTS_PER_RING]; + +#if TW_OVERFLOW_VECTOR > 0 + tw_timer_wheel_slot_t overflow; +#endif + +#if TW_FAST_WHEEL_BITMAP > 0 + /** Fast wheel slot occupancy bitmap */ + uword *fast_slot_bitmap; +#endif + + /** expired timer callback, receives a vector of handles */ + void (*expired_timer_callback) (u32 * expired_timer_handles); + + /** vectors of expired timers */ + u32 *expired_timer_handles; + + /** maximum expirations */ + u32 max_expirations; + + /** current trace index */ +#if TW_START_STOP_TRACE_SIZE > 0 + /* Start/stop/expire tracing */ + u32 trace_index; + u32 trace_wrapped; + TWT (trace) traces[TW_START_STOP_TRACE_SIZE]; +#endif + +} TWT (tw_timer_wheel); + +u32 TW (tw_timer_start) (TWT (tw_timer_wheel) * tw, + u32 pool_index, u32 timer_id, u64 interval); + +void TW (tw_timer_stop) (TWT (tw_timer_wheel) * tw, u32 handle); + +void TW (tw_timer_wheel_init) (TWT (tw_timer_wheel) * tw, + void *expired_timer_callback, + f64 timer_interval, u32 max_expirations); + +void TW (tw_timer_wheel_free) (TWT (tw_timer_wheel) * tw); + +u32 *TW (tw_timer_expire_timers) (TWT (tw_timer_wheel) * tw, f64 now); +u32 *TW (tw_timer_expire_timers_vec) (TWT (tw_timer_wheel) * tw, f64 now, + u32 * vec); +#if TW_FAST_WHEEL_BITMAP +u32 TW (tw_timer_first_expires_in_ticks) (TWT (tw_timer_wheel) * tw); +#endif + +#if TW_START_STOP_TRACE_SIZE > 0 +void TW (tw_search_trace) (TWT (tw_timer_wheel) * tw, u32 handle); +void TW (tw_timer_trace) (TWT (tw_timer_wheel) * tw, u32 timer_id, + u32 pool_index, u32 handle); +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/types.h b/src/vppinfra/types.h new file mode 100644 index 00000000..f87bb48c --- /dev/null +++ b/src/vppinfra/types.h @@ -0,0 +1,174 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001-2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_types_h +#define included_clib_types_h + +/* Standard CLIB types. */ + +/* Define signed and unsigned 8, 16, 32, and 64 bit types + and machine signed/unsigned word for all architectures. */ +typedef char i8; +typedef short i16; + +/* Avoid conflicts with Linux asm/types.h when __KERNEL__ */ +#if defined(CLIB_LINUX_KERNEL) +/* Linux also defines u8/u16/u32/u64 types. */ +#include <asm/types.h> +#define CLIB_AVOID_CLASH_WITH_LINUX_TYPES + +#else /* ! CLIB_LINUX_KERNEL */ + +typedef unsigned char u8; +typedef unsigned short u16; +#endif /* ! CLIB_LINUX_KERNEL */ + +#if defined (__x86_64__) +#ifndef __COVERITY__ +typedef int i128 __attribute__ ((mode (TI))); +typedef unsigned int u128 __attribute__ ((mode (TI))); +#endif +#endif + +#if (defined(i386) || defined(_mips) || defined(powerpc) || defined (__SPU__) || defined(__sparc__) || defined(__arm__) || defined (__xtensa__) || defined(__TMS320C6X__)) +typedef int i32; +typedef long long i64; + +#ifndef CLIB_AVOID_CLASH_WITH_LINUX_TYPES +typedef unsigned int u32; +typedef unsigned long long u64; +#endif /* CLIB_AVOID_CLASH_WITH_LINUX_TYPES */ + +#elif defined(_mips) && __mips == 64 +#define log2_uword_bits 6 +#define clib_address_bits _MIPS_SZPTR + +#elif defined(alpha) || defined(__x86_64__) || defined (__powerpc64__) || defined (__aarch64__) +typedef int i32; +typedef long i64; + +#define log2_uword_bits 6 +#define clib_address_bits 64 + +#ifndef CLIB_AVOID_CLASH_WITH_LINUX_TYPES +typedef unsigned int u32; +typedef unsigned long u64; +#endif /* CLIB_AVOID_CLASH_WITH_LINUX_TYPES */ + +#else +#error "can't define types" +#endif + +/* Default to 32 bit machines with 32 bit addresses. */ +#ifndef log2_uword_bits +#define log2_uword_bits 5 +#endif + +/* #ifdef's above define log2_uword_bits. */ +#define uword_bits (1 << log2_uword_bits) + +#ifndef clib_address_bits +#define clib_address_bits 32 +#endif + +/* Word types. */ +#if uword_bits == 64 +/* 64 bit word machines. */ +typedef i64 word; +typedef u64 uword; +#else +/* 32 bit word machines. */ +typedef i32 word; +typedef u32 uword; +#endif + +/* integral type of a pointer (used to cast pointers). */ +#if clib_address_bits == 64 +typedef u64 clib_address_t; +#else +typedef u32 clib_address_t; +#endif + +/* These are needed to convert between pointers and machine words. + MIPS is currently the only machine that can have different sized + pointers and machine words (but only when compiling with 64 bit + registers and 32 bit pointers). */ +static inline __attribute__ ((always_inline)) uword +pointer_to_uword (const void *p) +{ + return (uword) (clib_address_t) p; +} + +#define uword_to_pointer(u,type) ((type) (clib_address_t) (u)) + +/* Any type: can be either word or pointer. */ +typedef word any; + +/* Floating point types. */ +typedef double f64; +typedef float f32; + +typedef __complex__ float cf32; +typedef __complex__ double cf64; + +/* Floating point word size. */ +typedef f64 fword; + +/* Can be used as either {r,l}value, e.g. these both work + clib_mem_unaligned (p, u64) = 99 + clib_mem_unaligned (p, u64) += 99 */ + +#define clib_mem_unaligned(pointer,type) \ + (((struct { CLIB_PACKED (type _data); } *) (pointer))->_data) + +/* Access memory with specified alignment depending on align argument. + As with clib_mem_unaligned, may be used as {r,l}value. */ +#define clib_mem_aligned(addr,type,align) \ + (((struct { \ + type _data \ + __attribute__ ((aligned (align), packed)); \ + } *) (addr))->_data) + +#endif /* included_clib_types_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/unformat.c b/src/vppinfra/unformat.c new file mode 100644 index 00000000..5b17562f --- /dev/null +++ b/src/vppinfra/unformat.c @@ -0,0 +1,1083 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/format.h> + +/* Call user's function to fill input buffer. */ +uword +_unformat_fill_input (unformat_input_t * i) +{ + uword l, first_mark; + + if (i->index == UNFORMAT_END_OF_INPUT) + return i->index; + + first_mark = l = vec_len (i->buffer); + if (vec_len (i->buffer_marks) > 0) + first_mark = i->buffer_marks[0]; + + /* Re-use buffer when no marks. */ + if (first_mark > 0) + vec_delete (i->buffer, first_mark, 0); + + i->index = vec_len (i->buffer); + for (l = 0; l < vec_len (i->buffer_marks); l++) + i->buffer_marks[l] -= first_mark; + + /* Call user's function to fill the buffer. */ + if (i->fill_buffer) + i->index = i->fill_buffer (i); + + /* If input pointer is still beyond end of buffer even after + fill then we've run out of input. */ + if (i->index >= vec_len (i->buffer)) + i->index = UNFORMAT_END_OF_INPUT; + + return i->index; +} + +always_inline uword +is_white_space (uword c) +{ + switch (c) + { + case ' ': + case '\t': + case '\n': + case '\r': + return 1; + + default: + return 0; + } +} + +/* Format function for dumping input stream. */ +u8 * +format_unformat_error (u8 * s, va_list * va) +{ + unformat_input_t *i = va_arg (*va, unformat_input_t *); + uword l = vec_len (i->buffer); + + /* Only show so much of the input buffer (it could be really large). */ + uword n_max = 30; + + if (i->index < l) + { + uword n = l - i->index; + u8 *p, *p_end; + + p = i->buffer + i->index; + p_end = p + (n > n_max ? n_max : n); + + /* Skip white space at end. */ + if (n <= n_max) + { + while (p_end > p && is_white_space (p_end[-1])) + p_end--; + } + + while (p < p_end) + { + switch (*p) + { + case '\r': + vec_add (s, "\\r", 2); + break; + case '\n': + vec_add (s, "\\n", 2); + break; + case '\t': + vec_add (s, "\\t", 2); + break; + default: + vec_add1 (s, *p); + break; + } + p++; + } + + if (n > n_max) + vec_add (s, "...", 3); + } + + return s; +} + +/* Print everything: not just error context. */ +u8 * +format_unformat_input (u8 * s, va_list * va) +{ + unformat_input_t *i = va_arg (*va, unformat_input_t *); + uword l, n; + + if (i->index == UNFORMAT_END_OF_INPUT) + s = format (s, "{END_OF_INPUT}"); + else + { + l = vec_len (i->buffer); + n = l - i->index; + if (n > 0) + vec_add (s, i->buffer + i->index, n); + } + + return s; +} + +#if CLIB_DEBUG > 0 +void +di (unformat_input_t * i) +{ + fformat (stderr, "%U\n", format_unformat_input, i); +} +#endif + +/* Parse delimited vector string. If string starts with { then string + is delimited by balenced parenthesis. Other string is delimited by + white space. {} were chosen since they are special to the shell. */ +static uword +unformat_string (unformat_input_t * input, + uword delimiter_character, + uword format_character, va_list * va) +{ + u8 **string_return = va_arg (*va, u8 **); + u8 *s = 0; + word paren = 0; + word is_paren_delimited = 0; + word backslash = 0; + uword c; + + switch (delimiter_character) + { + case '%': + case ' ': + case '\t': + delimiter_character = 0; + break; + } + + while ((c = unformat_get_input (input)) != UNFORMAT_END_OF_INPUT) + { + word add_to_vector; + + /* Null return string means to skip over delimited input. */ + add_to_vector = string_return != 0; + + if (backslash) + backslash = 0; + else + switch (c) + { + case '\\': + backslash = 1; + add_to_vector = 0; + break; + + case '{': + if (paren == 0 && vec_len (s) == 0) + { + is_paren_delimited = 1; + add_to_vector = 0; + } + paren++; + break; + + case '}': + paren--; + if (is_paren_delimited && paren == 0) + goto done; + break; + + case ' ': + case '\t': + case '\n': + case '\r': + if (!is_paren_delimited) + { + unformat_put_input (input); + goto done; + } + break; + + default: + if (!is_paren_delimited && c == delimiter_character) + { + unformat_put_input (input); + goto done; + } + } + + if (add_to_vector) + vec_add1 (s, c); + } + +done: + if (string_return) + { + /* Match the string { END-OF-INPUT as a single brace. */ + if (c == UNFORMAT_END_OF_INPUT && vec_len (s) == 0 && paren == 1) + vec_add1 (s, '{'); + + /* Don't match null string. */ + if (c == UNFORMAT_END_OF_INPUT && vec_len (s) == 0) + return 0; + + /* Null terminate C string. */ + if (format_character == 's') + vec_add1 (s, 0); + + *string_return = s; + } + else + vec_free (s); /* just to make sure */ + + return 1; +} + +uword +unformat_hex_string (unformat_input_t * input, va_list * va) +{ + u8 **hexstring_return = va_arg (*va, u8 **); + u8 *s; + uword n, d, c; + + n = 0; + d = 0; + s = 0; + while ((c = unformat_get_input (input)) != UNFORMAT_END_OF_INPUT) + { + if (c >= '0' && c <= '9') + d = 16 * d + c - '0'; + else if (c >= 'a' && c <= 'f') + d = 16 * d + 10 + c - 'a'; + else if (c >= 'A' && c <= 'F') + d = 16 * d + 10 + c - 'A'; + else + { + unformat_put_input (input); + break; + } + n++; + + if (n == 2) + { + vec_add1 (s, d); + n = d = 0; + } + } + + /* Hex string must have even number of digits. */ + if (n % 2) + { + vec_free (s); + return 0; + } + /* Make sure something was processed. */ + else if (s == 0) + { + return 0; + } + + *hexstring_return = s; + return 1; +} + +/* unformat (input "foo%U", unformat_eof) matches terminal foo only */ +uword +unformat_eof (unformat_input_t * input, va_list * va) +{ + return unformat_check_input (input) == UNFORMAT_END_OF_INPUT; +} + +/* Parse a token containing given set of characters. */ +uword +unformat_token (unformat_input_t * input, va_list * va) +{ + u8 *token_chars = va_arg (*va, u8 *); + u8 **string_return = va_arg (*va, u8 **); + u8 *s, map[256]; + uword i, c; + + if (!token_chars) + token_chars = (u8 *) "a-zA-Z0-9_"; + + memset (map, 0, sizeof (map)); + for (s = token_chars; *s;) + { + /* Parse range. */ + if (s[0] < s[2] && s[1] == '-') + { + for (i = s[0]; i <= s[2]; i++) + map[i] = 1; + s = s + 3; + } + else + { + map[s[0]] = 1; + s = s + 1; + } + } + + s = 0; + while ((c = unformat_get_input (input)) != UNFORMAT_END_OF_INPUT) + { + if (!map[c]) + { + unformat_put_input (input); + break; + } + + vec_add1 (s, c); + } + + if (vec_len (s) == 0) + return 0; + + *string_return = s; + return 1; +} + +/* Unformat (parse) function which reads a %s string and converts it + to and unformat_input_t. */ +uword +unformat_input (unformat_input_t * i, va_list * args) +{ + unformat_input_t *sub_input = va_arg (*args, unformat_input_t *); + u8 *s; + + if (unformat (i, "%v", &s)) + { + unformat_init_vector (sub_input, s); + return 1; + } + + return 0; +} + +/* Parse a line ending with \n and return it. */ +uword +unformat_line (unformat_input_t * i, va_list * va) +{ + u8 *line = 0, **result = va_arg (*va, u8 **); + uword c; + + while ((c = unformat_get_input (i)) != '\n' && c != UNFORMAT_END_OF_INPUT) + { + vec_add1 (line, c); + } + + *result = line; + return vec_len (line); +} + +/* Parse a line ending with \n and return it as an unformat_input_t. */ +uword +unformat_line_input (unformat_input_t * i, va_list * va) +{ + unformat_input_t *result = va_arg (*va, unformat_input_t *); + u8 *line; + if (!unformat_user (i, unformat_line, &line)) + return 0; + unformat_init_vector (result, line); + return 1; +} + +/* Values for is_signed. */ +#define UNFORMAT_INTEGER_SIGNED 1 +#define UNFORMAT_INTEGER_UNSIGNED 0 + +static uword +unformat_integer (unformat_input_t * input, + va_list * va, uword base, uword is_signed, uword data_bytes) +{ + uword c, digit; + uword value = 0; + uword n_digits = 0; + uword n_input = 0; + uword sign = 0; + + /* We only support bases <= 64. */ + if (base < 2 || base > 64) + goto error; + + while ((c = unformat_get_input (input)) != UNFORMAT_END_OF_INPUT) + { + switch (c) + { + case '-': + if (n_input == 0) + { + if (is_signed) + { + sign = 1; + goto next_digit; + } + else + /* Leading sign for unsigned number. */ + goto error; + } + /* Sign after input (e.g. 100-200). */ + goto put_input_done; + + case '+': + if (n_input > 0) + goto put_input_done; + sign = 0; + goto next_digit; + + case '0' ... '9': + digit = c - '0'; + break; + + case 'a' ... 'z': + digit = 10 + (c - 'a'); + break; + + case 'A' ... 'Z': + digit = 10 + (base >= 36 ? 26 : 0) + (c - 'A'); + break; + + case '/': + digit = 62; + break; + + case '?': + digit = 63; + break; + + default: + goto put_input_done; + } + + if (digit >= base) + { + put_input_done: + unformat_put_input (input); + goto done; + } + + { + uword new_value = base * value + digit; + + /* Check for overflow. */ + if (new_value < value) + goto error; + value = new_value; + } + n_digits += 1; + + next_digit: + n_input++; + } + +done: + if (sign) + value = -value; + + if (n_digits > 0) + { + void *v = va_arg (*va, void *); + + if (data_bytes == ~0) + data_bytes = sizeof (int); + + switch (data_bytes) + { + case 1: + *(u8 *) v = value; + break; + case 2: + *(u16 *) v = value; + break; + case 4: + *(u32 *) v = value; + break; + case 8: + *(u64 *) v = value; + break; + default: + goto error; + } + + return 1; + } + +error: + return 0; +} + +/* Return x 10^n */ +static f64 +times_power_of_ten (f64 x, int n) +{ + if (n >= 0) + { + static f64 t[8] = { 1e+0, 1e+1, 1e+2, 1e+3, 1e+4, 1e+5, 1e+6, 1e+7, }; + while (n >= 8) + { + x *= 1e+8; + n -= 8; + } + return x * t[n]; + } + else + { + static f64 t[8] = { 1e-0, 1e-1, 1e-2, 1e-3, 1e-4, 1e-5, 1e-6, 1e-7, }; + while (n <= -8) + { + x *= 1e-8; + n += 8; + } + return x * t[-n]; + } + +} + +static uword +unformat_float (unformat_input_t * input, va_list * va) +{ + uword c; + u64 values[3]; + uword n_digits[3], value_index = 0; + uword signs[2], sign_index = 0; + uword n_input = 0; + + memset (values, 0, sizeof (values)); + memset (n_digits, 0, sizeof (n_digits)); + memset (signs, 0, sizeof (signs)); + + while ((c = unformat_get_input (input)) != UNFORMAT_END_OF_INPUT) + { + switch (c) + { + case '-': + if (value_index == 2 && n_digits[2] == 0) + /* sign of exponent: it's ok. */ ; + + else if (value_index < 2 && n_digits[0] > 0) + { + /* 123- */ + unformat_put_input (input); + goto done; + } + + else if (n_input > 0) + goto error; + + signs[sign_index++] = 1; + goto next_digit; + + case '+': + if (value_index == 2 && n_digits[2] == 0) + /* sign of exponent: it's ok. */ ; + + else if (value_index < 2 && n_digits[0] > 0) + { + /* 123+ */ + unformat_put_input (input); + goto done; + } + + else if (n_input > 0) + goto error; + signs[sign_index++] = 0; + goto next_digit; + + case 'e': + case 'E': + if (n_input == 0) + goto error; + value_index = 2; + sign_index = 1; + break; + + case '.': + if (value_index > 0) + goto error; + value_index = 1; + break; + + case '0' ... '9': + { + u64 tmp; + + tmp = values[value_index] * 10 + c - '0'; + + /* Check for overflow. */ + if (tmp < values[value_index]) + goto error; + values[value_index] = tmp; + n_digits[value_index] += 1; + } + break; + + default: + unformat_put_input (input); + goto done; + } + + next_digit: + n_input++; + } + +done: + { + f64 f_values[2], *value_return; + word expon; + + /* Must have either whole or fraction digits. */ + if (n_digits[0] + n_digits[1] <= 0) + goto error; + + f_values[0] = values[0]; + if (signs[0]) + f_values[0] = -f_values[0]; + + f_values[1] = values[1]; + f_values[1] = times_power_of_ten (f_values[1], -n_digits[1]); + + f_values[0] += f_values[1]; + + expon = values[2]; + if (signs[1]) + expon = -expon; + + f_values[0] = times_power_of_ten (f_values[0], expon); + + value_return = va_arg (*va, f64 *); + *value_return = f_values[0]; + return 1; + } + +error: + return 0; +} + +static const char * +match_input_with_format (unformat_input_t * input, const char *f) +{ + uword cf, ci; + + ASSERT (*f != 0); + + while (1) + { + cf = *f; + if (cf == 0 || cf == '%' || cf == ' ') + break; + f++; + + ci = unformat_get_input (input); + + if (cf != ci) + return 0; + } + return f; +} + +static const char * +do_percent (unformat_input_t * input, va_list * va, const char *f) +{ + uword cf, n, data_bytes = ~0; + + cf = *f++; + + switch (cf) + { + default: + break; + + case 'w': + /* Word types. */ + cf = *f++; + data_bytes = sizeof (uword); + break; + + case 'l': + cf = *f++; + if (cf == 'l') + { + cf = *f++; + data_bytes = sizeof (long long); + } + else + { + data_bytes = sizeof (long); + } + break; + + case 'L': + cf = *f++; + data_bytes = sizeof (long long); + break; + } + + n = 0; + switch (cf) + { + case 'D': + data_bytes = va_arg (*va, int); + case 'd': + n = unformat_integer (input, va, 10, + UNFORMAT_INTEGER_SIGNED, data_bytes); + break; + + case 'u': + n = unformat_integer (input, va, 10, + UNFORMAT_INTEGER_UNSIGNED, data_bytes); + break; + + case 'b': + n = unformat_integer (input, va, 2, + UNFORMAT_INTEGER_UNSIGNED, data_bytes); + break; + + case 'o': + n = unformat_integer (input, va, 8, + UNFORMAT_INTEGER_UNSIGNED, data_bytes); + break; + + case 'X': + data_bytes = va_arg (*va, int); + case 'x': + n = unformat_integer (input, va, 16, + UNFORMAT_INTEGER_UNSIGNED, data_bytes); + break; + + case 'f': + n = unformat_float (input, va); + break; + + case 's': + case 'v': + n = unformat_string (input, f[0], cf, va); + break; + + case 'U': + { + unformat_function_t *f = va_arg (*va, unformat_function_t *); + n = f (input, va); + } + break; + + case '=': + case '|': + { + int *var = va_arg (*va, int *); + uword val = va_arg (*va, int); + + if (cf == '|') + val |= *var; + *var = val; + n = 1; + } + break; + } + + return n ? f : 0; +} + +uword +unformat_skip_white_space (unformat_input_t * input) +{ + uword n = 0; + uword c; + + while ((c = unformat_get_input (input)) != UNFORMAT_END_OF_INPUT) + { + if (!is_white_space (c)) + { + unformat_put_input (input); + break; + } + n++; + } + return n; +} + +uword +va_unformat (unformat_input_t * input, const char *fmt, va_list * va) +{ + const char *f; + uword input_matches_format; + uword default_skip_input_white_space; + uword n_input_white_space_skipped; + uword last_non_white_space_match_percent; + uword last_non_white_space_match_format; + + vec_add1_aligned (input->buffer_marks, input->index, + sizeof (input->buffer_marks[0])); + + f = fmt; + default_skip_input_white_space = 1; + input_matches_format = 0; + last_non_white_space_match_percent = 0; + last_non_white_space_match_format = 0; + + while (1) + { + char cf; + uword is_percent, skip_input_white_space; + + cf = *f; + is_percent = 0; + + /* Always skip input white space at start of format string. + Otherwise use default skip value which can be changed by %_ + (see below). */ + skip_input_white_space = f == fmt || default_skip_input_white_space; + + /* Spaces in format request skipping input white space. */ + if (is_white_space (cf)) + { + skip_input_white_space = 1; + + /* Multiple format spaces are equivalent to a single white + space. */ + while (is_white_space (*++f)) + ; + } + else if (cf == '%') + { + /* %_ toggles whether or not to skip input white space. */ + switch (*++f) + { + case '_': + default_skip_input_white_space = + !default_skip_input_white_space; + f++; + /* For transition from skip to no-skip in middle of format + string, skip input white space. For example, the following matches: + fmt = "%_%d.%d%_->%_%d.%d%_" + input "1.2 -> 3.4" + Without this the space after -> does not get skipped. */ + if (!default_skip_input_white_space + && !(f == fmt + 2 || *f == 0)) + unformat_skip_white_space (input); + continue; + + /* %% means match % */ + case '%': + break; + + /* % at end of format string. */ + case 0: + goto parse_fail; + + default: + is_percent = 1; + break; + } + } + + n_input_white_space_skipped = 0; + if (skip_input_white_space) + n_input_white_space_skipped = unformat_skip_white_space (input); + + /* End of format string. */ + if (cf == 0) + { + /* Force parse error when format string ends and input is + not white or at end. As an example, this is to prevent + format "foo" from matching input "food". + The last_non_white_space_match_percent is to make + "foo %d" match input "foo 10,bletch" with %d matching 10. */ + if (skip_input_white_space + && !last_non_white_space_match_percent + && !last_non_white_space_match_format + && n_input_white_space_skipped == 0 + && input->index != UNFORMAT_END_OF_INPUT) + goto parse_fail; + break; + } + + last_non_white_space_match_percent = is_percent; + last_non_white_space_match_format = 0; + + /* Explicit spaces in format must match input white space. */ + if (cf == ' ' && !default_skip_input_white_space) + { + if (n_input_white_space_skipped == 0) + goto parse_fail; + } + + else if (is_percent) + { + if (!(f = do_percent (input, va, f))) + goto parse_fail; + } + + else + { + const char *g = match_input_with_format (input, f); + if (!g) + goto parse_fail; + last_non_white_space_match_format = g > f; + f = g; + } + } + + input_matches_format = 1; +parse_fail: + + /* Rewind buffer marks. */ + { + uword l = vec_len (input->buffer_marks); + + /* If we did not match back up buffer to last mark. */ + if (!input_matches_format) + input->index = input->buffer_marks[l - 1]; + + _vec_len (input->buffer_marks) = l - 1; + } + + return input_matches_format; +} + +uword +unformat (unformat_input_t * input, const char *fmt, ...) +{ + va_list va; + uword result; + va_start (va, fmt); + result = va_unformat (input, fmt, &va); + va_end (va); + return result; +} + +uword +unformat_user (unformat_input_t * input, unformat_function_t * func, ...) +{ + va_list va; + uword result, l; + + /* Save place in input buffer in case parse fails. */ + l = vec_len (input->buffer_marks); + vec_add1_aligned (input->buffer_marks, input->index, + sizeof (input->buffer_marks[0])); + + va_start (va, func); + result = func (input, &va); + va_end (va); + + if (!result && input->index != UNFORMAT_END_OF_INPUT) + input->index = input->buffer_marks[l]; + + _vec_len (input->buffer_marks) = l; + + return result; +} + +/* Setup for unformat of Unix style command line. */ +void +unformat_init_command_line (unformat_input_t * input, char *argv[]) +{ + uword i; + + unformat_init (input, 0, 0); + + /* Concatenate argument strings with space in between. */ + for (i = 1; argv[i]; i++) + { + vec_add (input->buffer, argv[i], strlen (argv[i])); + if (argv[i + 1]) + vec_add1 (input->buffer, ' '); + } +} + +void +unformat_init_string (unformat_input_t * input, char *string, int string_len) +{ + unformat_init (input, 0, 0); + if (string_len > 0) + vec_add (input->buffer, string, string_len); +} + +void +unformat_init_vector (unformat_input_t * input, u8 * vector_string) +{ + unformat_init (input, 0, 0); + input->buffer = vector_string; +} + +#ifdef CLIB_UNIX + +static uword +unix_file_fill_buffer (unformat_input_t * input) +{ + int fd = pointer_to_uword (input->fill_buffer_arg); + uword l, n; + + l = vec_len (input->buffer); + vec_resize (input->buffer, 4096); + n = read (fd, input->buffer + l, 4096); + if (n > 0) + _vec_len (input->buffer) = l + n; + + if (n <= 0) + return UNFORMAT_END_OF_INPUT; + else + return input->index; +} + +void +unformat_init_unix_file (unformat_input_t * input, int file_descriptor) +{ + unformat_init (input, unix_file_fill_buffer, + uword_to_pointer (file_descriptor, void *)); +} + +/* Take input from Unix environment variable. */ +uword +unformat_init_unix_env (unformat_input_t * input, char *var) +{ + char *val = getenv (var); + if (val) + unformat_init_string (input, val, strlen (val)); + return val != 0; +} + +#endif /* CLIB_UNIX */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/unix-formats.c b/src/vppinfra/unix-formats.c new file mode 100644 index 00000000..b09433c9 --- /dev/null +++ b/src/vppinfra/unix-formats.c @@ -0,0 +1,956 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifdef __KERNEL__ + +# include <linux/unistd.h> +# include <linux/signal.h> + +#else /* ! __KERNEL__ */ + +#define _GNU_SOURCE /* to get REG_* in ucontext.h */ +#include <ucontext.h> +#undef _GNU_SOURCE +#undef __USE_GNU + +#include <unistd.h> +#include <signal.h> +#include <grp.h> + +#include <time.h> +#include <sys/socket.h> +#include <netdb.h> +#include <math.h> + +#include <vppinfra/time.h> + +#ifdef AF_NETLINK +#include <linux/types.h> +#include <linux/netlink.h> +#endif + +#endif /* ! __KERNEL__ */ + + +#ifdef __KERNEL__ +# include <linux/socket.h> +# include <linux/in.h> +# include <linux/ip.h> +# include <linux/tcp.h> +# include <linux/udp.h> +# include <linux/icmp.h> +# include <linux/if_ether.h> +# include <linux/if_arp.h> +#else +# include <net/if.h> /* struct ifnet may live here */ +# include <netinet/in.h> +# include <netinet/ip.h> +# include <netinet/tcp.h> +# include <netinet/udp.h> +# include <netinet/ip_icmp.h> +# include <netinet/if_ether.h> +#endif /* __KERNEL__ */ + +#include <vppinfra/bitops.h> /* foreach_set_bit */ +#include <vppinfra/format.h> +#include <vppinfra/error.h> + +/* Format unix network address family (e.g. AF_INET). */ +u8 * format_address_family (u8 * s, va_list * va) +{ + uword family = va_arg (*va, uword); + u8 * t = (u8 *) "UNKNOWN"; + switch (family) + { +#define _(x) case PF_##x: t = (u8 *) #x; break + _ (UNSPEC); + _ (UNIX); /* Unix domain sockets */ + _ (INET); /* Internet IP Protocol */ +#ifdef PF_AX25 + _ (AX25); /* Amateur Radio AX.25 */ +#endif +#ifdef PF_IPX + _ (IPX); /* Novell IPX */ +#endif +#ifdef PF_APPLETALK + _ (APPLETALK); /* AppleTalk DDP */ +#endif +#ifdef PF_NETROM + _ (NETROM); /* Amateur Radio NET/ROM */ +#endif +#ifdef PF_BRIDGE + _ (BRIDGE); /* Multiprotocol bridge */ +#endif +#ifdef PF_ATMPVC + _ (ATMPVC); /* ATM PVCs */ +#endif +#ifdef PF_X25 + _ (X25); /* Reserved for X.25 project */ +#endif +#ifdef PF_INET6 + _ (INET6); /* IP version 6 */ +#endif +#ifdef PF_ROSE + _ (ROSE); /* Amateur Radio X.25 PLP */ +#endif +#ifdef PF_DECnet + _ (DECnet); /* Reserved for DECnet project */ +#endif +#ifdef PF_NETBEUI + _ (NETBEUI); /* Reserved for 802.2LLC project*/ +#endif +#ifdef PF_SECURITY + _ (SECURITY); /* Security callback pseudo AF */ +#endif +#ifdef PF_KEY + _ (KEY); /* PF_KEY key management API */ +#endif +#ifdef PF_NETLINK + _ (NETLINK); +#endif +#ifdef PF_PACKET + _ (PACKET); /* Packet family */ +#endif +#ifdef PF_ASH + _ (ASH); /* Ash */ +#endif +#ifdef PF_ECONET + _ (ECONET); /* Acorn Econet */ +#endif +#ifdef PF_ATMSVC + _ (ATMSVC); /* ATM SVCs */ +#endif +#ifdef PF_SNA + _ (SNA); /* Linux SNA Project */ +#endif +#ifdef PF_IRDA + _ (IRDA); /* IRDA sockets */ +#endif +#undef _ + } + vec_add (s, t, strlen ((char *) t)); + return s; +} + +u8 * format_network_protocol (u8 * s, va_list * args) +{ + uword family = va_arg (*args, uword); + uword protocol = va_arg (*args, uword); + +#ifndef __KERNEL__ + struct protoent * p = getprotobynumber (protocol); + + ASSERT (family == AF_INET); + if (p) + return format (s, "%s", p->p_name); + else + return format (s, "%d", protocol); +#else + return format (s, "%d/%d", family, protocol); +#endif +} + +u8 * format_network_port (u8 * s, va_list * args) +{ + uword proto = va_arg (*args, uword); + uword port = va_arg (*args, uword); + +#ifndef __KERNEL__ + struct servent * p = getservbyport (port, proto == IPPROTO_UDP ? "udp" : "tcp"); + + if (p) + return format (s, "%s", p->s_name); + else + return format (s, "%d", port); +#else + return format (s, "%s/%d", proto == IPPROTO_UDP ? "udp" : "tcp", port); +#endif +} + +/* Format generic network address: takes two arguments family and address. + Assumes network byte order. */ +u8 * format_network_address (u8 * s, va_list * args) +{ + uword family = va_arg (*args, uword); + u8 * addr = va_arg (*args, u8 *); + + switch (family) + { + case AF_INET: + s = format (s, "%d.%d.%d.%d", addr[0], addr[1], addr[2], addr[3]); + break; + + case AF_UNSPEC: + /* We use AF_UNSPEC for ethernet addresses. */ + s = format (s, "%02x:%02x:%02x:%02x:%02x:%02x", + addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); + break; + + default: + clib_error ("unsupported address family %d", family); + } + + return s; +} + +u8 * format_sockaddr (u8 * s, va_list * args) +{ + void * v = va_arg (*args, void *); + struct sockaddr * sa = v; + static u32 local_counter; + + switch (sa->sa_family) + { + case AF_INET: + { + struct sockaddr_in * i = v; + s = format (s, "%U:%U", + format_network_address, AF_INET, &i->sin_addr.s_addr, + format_network_port, IPPROTO_TCP, ntohs (i->sin_port)); + } + break; + + case AF_LOCAL: + { + /* + * There isn't anything useful to print. + * The unix cli world uses the output to make a node name, + * so we need to return a unique name. + */ + s = format (s, "local:%u", local_counter++); + } + break; + +#ifndef __KERNEL__ +#ifdef AF_NETLINK + case AF_NETLINK: + { + struct sockaddr_nl * n = v; + s = format (s, "KERNEL-NETLINK"); + if (n->nl_groups) + s = format (s, " (groups 0x%x)", n->nl_groups); + break; + } +#endif +#endif + + default: + s = format (s, "sockaddr family %d", sa->sa_family); + break; + } + + return s; +} + +u8 * format_tcp4_packet (u8 * s, va_list * args) +{ + u8 * p = va_arg (*args, u8 *); + struct iphdr * ip = (void *) p; + struct tcphdr * tcp = (void *) (ip + 1); + + s = format (s, "tcp %U:%U -> %U:%U", + format_network_address, AF_INET, &ip->saddr, + format_network_port, IPPROTO_TCP, ntohs (tcp->source), + format_network_address, AF_INET, &ip->daddr, + format_network_port, IPPROTO_TCP, ntohs (tcp->dest)); + + s = format (s, ", seq 0x%08x -> 0x%08x", tcp->seq, tcp->ack_seq); +#define _(f) if (tcp->f) s = format (s, ", " #f); + _ (syn); _ (ack); _ (fin); _ (rst); _ (psh); _ (urg); +#undef _ + + if (tcp->window) + s = format (s, ", window 0x%04x", tcp->window); + if (tcp->urg) + s = format (s, ", urg 0x%04x", tcp->urg_ptr); + + return s; +} + +u8 * format_udp4_packet (u8 * s, va_list * args) +{ + u8 * p = va_arg (*args, u8 *); + struct iphdr * ip = (void *) p; + struct udphdr * udp = (void *) (ip + 1); + + s = format (s, "udp %U:%U -> %U:%U", + format_network_address, AF_INET, &ip->saddr, + format_network_port, IPPROTO_UDP, ntohs (udp->source), + format_network_address, AF_INET, &ip->daddr, + format_network_port, IPPROTO_UDP, ntohs (udp->dest)); + + return s; +} + +u8 * format_icmp4_type_and_code (u8 * s, va_list * args) +{ + uword icmp_type = va_arg (*args, uword); + uword icmp_code = va_arg (*args, uword); + + switch (icmp_type) + { +#define _(f,str) case ICMP_##f: s = format (s, str); break; + _ (ECHOREPLY, "echo reply"); + _ (DEST_UNREACH, "unreachable"); + _ (SOURCE_QUENCH, "source quench"); + _ (REDIRECT, "redirect"); + _ (ECHO, "echo request"); + _ (TIME_EXCEEDED, "time exceeded"); + _ (PARAMETERPROB, "parameter problem"); + _ (TIMESTAMP, "timestamp request"); + _ (TIMESTAMPREPLY, "timestamp reply"); + _ (INFO_REQUEST, "information request"); + _ (INFO_REPLY, "information reply"); + _ (ADDRESS, "address mask request"); + _ (ADDRESSREPLY, "address mask reply"); +#undef _ + default: + s = format (s, "unknown type 0x%x", icmp_type); + } + + if (icmp_type == ICMP_DEST_UNREACH) + { + switch (icmp_code) + { +#define _(f,str) case ICMP_##f: s = format (s, " " # str); break; + _ (NET_UNREACH, "network"); + _ (HOST_UNREACH, "host"); + _ (PROT_UNREACH, "protocol"); + _ (PORT_UNREACH, "port"); + _ (FRAG_NEEDED, ": fragmentation needed/DF set"); + _ (SR_FAILED, "source route failed"); + _ (NET_UNKNOWN, "network unknown"); + _ (HOST_UNKNOWN, "host unknown"); + _ (HOST_ISOLATED, "host isolated"); + _ (NET_ANO, "network: admin. prohibited"); + _ (HOST_ANO, "host: admin. prohibited"); + _ (NET_UNR_TOS, "network for type-of-service"); + _ (HOST_UNR_TOS, "host for type-of-service"); + _ (PKT_FILTERED, ": packet filtered"); + _ (PREC_VIOLATION, "precedence violation"); + _ (PREC_CUTOFF, "precedence cut off"); +#undef _ + default: + s = format (s, "unknown code 0x%x", icmp_code); + } + } + else if (icmp_type == ICMP_REDIRECT) + { + switch (icmp_code) + { +#define _(f,str) case ICMP_##f: s = format (s, " " # str); break; + _ (REDIR_NET, "network"); + _ (REDIR_HOST, "host"); + _ (REDIR_NETTOS, "network for type-of-service"); + _ (REDIR_HOSTTOS, "host for type-of-service"); +#undef _ + default: + s = format (s, "unknown code 0x%x", icmp_code); + } + } + else if (icmp_type == ICMP_TIME_EXCEEDED) + { + switch (icmp_code) + { +#define _(f,str) case ICMP_##f: s = format (s, " " # str); break; + _ (EXC_TTL, "time-to-live zero in transit"); + _ (EXC_FRAGTIME, "time-to-live zero during reassembly"); +#undef _ + default: + s = format (s, "unknown code 0x%x", icmp_code); + } + } + + return s; +} + +typedef struct { + u8 type; + u8 code; + u16 checksum; +} icmp4_t; + +u8 * format_icmp4_packet (u8 * s, va_list * args) +{ + u8 * p = va_arg (*args, u8 *); + struct iphdr * ip = (void *) p; + icmp4_t * icmp = (void *) (ip + 1); + s = format (s, "icmp %U %U -> %U", + format_icmp4_type_and_code, icmp->type, icmp->code, + format_network_address, AF_INET, &ip->saddr, + format_network_address, AF_INET, &ip->daddr); + + return s; +} + +u8 * format_ip4_tos_byte (u8 * s, va_list * args) +{ + uword tos = va_arg (*args, uword); + + if (tos & IPTOS_LOWDELAY) + s = format (s, "minimize-delay, "); + if (tos & IPTOS_MINCOST) + s = format (s, "minimize-cost, "); + if (tos & IPTOS_THROUGHPUT) + s = format (s, "maximize-throughput, "); + if (tos & IPTOS_RELIABILITY) + s = format (s, "maximize-reliability, "); + + switch (IPTOS_PREC (tos)) + { +#define _(x,y) case IPTOS_PREC_##x: s = format (s, y); break + _ (NETCONTROL, "network"); + _ (INTERNETCONTROL, "internet"); + _ (CRITIC_ECP, "critical"); + _ (FLASH, "flash"); + _ (FLASHOVERRIDE, "flash-override"); + _ (IMMEDIATE, "immediate"); + _ (PRIORITY, "priority"); + _ (ROUTINE, "routine"); +#undef _ + } + + return s; +} + +u8 * format_ip4_packet (u8 * s, va_list * args) +{ + u8 * p = va_arg (*args, u8 *); + struct iphdr * ip = (void *) p; + + static format_function_t * f[256]; + + if (! f[IPPROTO_TCP]) + { + f[IPPROTO_TCP] = format_tcp4_packet; + f[IPPROTO_UDP] = format_udp4_packet; + f[IPPROTO_ICMP] = format_icmp4_packet; + } + + if (f[ip->protocol]) + return format (s, "%U", f[ip->protocol], p); + + s = format (s, "%U: %U -> %U", + format_network_protocol, AF_INET, ip->protocol, + format_network_address, AF_INET, &ip->saddr, + format_network_address, AF_INET, &ip->daddr); + + return s; +} + +#define foreach_unix_arphrd_type \ + _ (NETROM, 0) \ + _ (ETHER, 1) \ + _ (EETHER, 2) \ + _ (AX25, 3) \ + _ (PRONET, 4) \ + _ (CHAOS, 5) \ + _ (IEEE802, 6) \ + _ (ARCNET, 7) \ + _ (APPLETLK, 8) \ + _ (DLCI, 15) \ + _ (ATM, 19) \ + _ (METRICOM, 23) \ + _ (IEEE1394, 24) \ + _ (EUI64, 27) \ + _ (INFINIBAND, 32) \ + _ (SLIP, 256) \ + _ (CSLIP, 257) \ + _ (SLIP6, 258) \ + _ (CSLIP6, 259) \ + _ (RSRVD, 260) \ + _ (ADAPT, 264) \ + _ (ROSE, 270) \ + _ (X25, 271) \ + _ (HWX25, 272) \ + _ (PPP, 512) \ + _ (HDLC, 513) \ + _ (LAPB, 516) \ + _ (DDCMP, 517) \ + _ (RAWHDLC, 518) \ + _ (TUNNEL, 768) \ + _ (TUNNEL6, 769) \ + _ (FRAD, 770) \ + _ (SKIP, 771) \ + _ (LOOPBACK, 772) \ + _ (LOCALTLK, 773) \ + _ (FDDI, 774) \ + _ (BIF, 775) \ + _ (SIT, 776) \ + _ (IPDDP, 777) \ + _ (IPGRE, 778) \ + _ (PIMREG, 779) \ + _ (HIPPI, 780) \ + _ (ASH, 781) \ + _ (ECONET, 782) \ + _ (IRDA, 783) \ + _ (FCPP, 784) \ + _ (FCAL, 785) \ + _ (FCPL, 786) \ + _ (FCFABRIC, 787) \ + _ (IEEE802_TR, 800) \ + _ (IEEE80211, 801) \ + _ (IEEE80211_PRISM, 802) \ + _ (IEEE80211_RADIOTAP, 803) \ + _ (VOID, 0xFFFF) \ + _ (NONE, 0xFFFE) + +u8 * format_unix_arphrd (u8 * s, va_list * args) +{ +#ifndef __COVERITY__ /* doesn't understand this at all... */ + u32 x = va_arg (*args, u32); + char * t; + switch (x) + { +#define _(f,n) case ARPHRD_##f: t = #f; break; + foreach_unix_arphrd_type +#undef _ + default: + t = 0; + break; + } + + if (t) + s = format (s, "%s", t); + else + s = format (s, "unknown 0x%x", x); +#endif + return s; +} + +#define foreach_unix_interface_flag \ + _ (up) \ + _ (broadcast) \ + _ (debug) \ + _ (loopback) \ + _ (pointopoint) \ + _ (notrailers) \ + _ (running) \ + _ (noarp) \ + _ (promisc) \ + _ (allmulti) \ + _ (master) \ + _ (slave) \ + _ (multicast) \ + _ (portsel) \ + _ (automedia) \ + _ (dynamic) \ + _ (lower_up) \ + _ (dormant) \ + _ (echo) + +static char * unix_interface_flag_names[] = { +#define _(f) #f, + foreach_unix_interface_flag +#undef _ +}; + +u8 * format_unix_interface_flags (u8 * s, va_list * args) +{ + u32 x = va_arg (*args, u32); + u32 i; + + if (x == 0) + s = format (s, "none"); + else foreach_set_bit (i, x, ({ + if (i < ARRAY_LEN (unix_interface_flag_names)) + s = format (s, "%s", unix_interface_flag_names[i]); + else + s = format (s, "unknown %d", i); + if (x >> (i + 1)) + s = format (s, ", "); + })); + return s; +} + +typedef struct { + u16 ar_hrd; /* format of hardware address */ + u16 ar_pro; /* format of protocol address */ + u8 ar_hln; /* length of hardware address */ + u8 ar_pln; /* length of protocol address */ + u16 ar_op; /* ARP opcode (command) */ + u8 ar_sha[6]; /* sender hardware address */ + u8 ar_spa[4]; /* sender IP address */ + u8 ar_tha[6]; /* target hardware address */ + u8 ar_tpa[4]; /* target IP address */ +} arp_ether_ip4_t; + +u8 * format_arp_packet (u8 * s, va_list * args) +{ + arp_ether_ip4_t * a = va_arg (*args, arp_ether_ip4_t *); + char * op = "unknown"; + + if (a->ar_pro != ETH_P_IP || + a->ar_hrd != ARPHRD_ETHER) + return s; + + switch (a->ar_op) + { +#define _(f) case ARPOP_##f: op = #f; break; + _ (REQUEST); + _ (REPLY); + _ (RREQUEST); + _ (RREPLY); +#undef _ + } + + s = format (s, "%s %U %U -> %U %U", + op, + format_network_address, AF_INET, a->ar_spa, + format_network_address, AF_UNSPEC, a->ar_sha, + format_network_address, AF_INET, a->ar_tpa, + format_network_address, AF_UNSPEC, a->ar_tha); + return s; +} + +u8 * format_ethernet_proto (u8 * s, va_list * args) +{ + uword type = va_arg (*args, uword); + char * t = 0; + + switch (type) + { + case 0: t = "BPDU"; break; +#define _(f) case ETH_P_##f: t = #f; break; + _ (LOOP); + _ (PUP); +#ifdef ETH_P_PUPAT + _ (PUPAT); +#endif + _ (IP); + _ (X25); + _ (ARP); + _ (BPQ); +#ifdef ETH_P_PUPAT + _ (IEEEPUP); + _ (IEEEPUPAT); +#endif + _ (DEC); + _ (DNA_DL); + _ (DNA_RC); + _ (DNA_RT); + _ (LAT); + _ (DIAG); + _ (CUST); + _ (SCA); + _ (RARP); + _ (ATALK); + _ (AARP); + _ (IPX); + _ (IPV6); +#ifdef ETH_P_PPP_DISC + _ (PPP_DISC); + _ (PPP_SES); +#endif +#ifdef ETH_P_ATMMPOA + _ (ATMMPOA); + _ (ATMFATE); +#endif + _ (802_3); + _ (AX25); + _ (ALL); + _ (802_2); + _ (SNAP); + _ (DDCMP); + _ (WAN_PPP); + _ (PPP_MP); + _ (LOCALTALK); + _ (PPPTALK); + _ (TR_802_2); + _ (MOBITEX); + _ (CONTROL); + _ (IRDA); +#ifdef ETH_P_ECONET + _ (ECONET); +#endif +#undef _ + } + + if (t) + vec_add (s, t, strlen (t)); + else + s = format (s, "ether-type 0x%x", type); + return s; +} + +u8 * format_ethernet_packet (u8 * s, va_list * args) +{ + struct ethhdr * h = va_arg (*args, struct ethhdr *); + uword proto = h->h_proto; + u8 * payload = (void *) (h + 1); + uword indent; + + /* Check for 802.2/802.3 encapsulation. */ + if (proto < ETH_DATA_LEN) + { + typedef struct { + u8 dsap, ssap, control; + u8 orig_code[3]; + u16 proto; + } ethhdr_802_t; + ethhdr_802_t * h1 = (void *) (h + 1); + proto = h1->proto; + payload = (void *) (h1 + 1); + } + + indent = format_get_indent (s); + + s = format (s, "%U: %U -> %U", + format_ethernet_proto, proto, + format_network_address, AF_UNSPEC, h->h_source, + format_network_address, AF_UNSPEC, h->h_dest); + + switch (proto) + { + case ETH_P_ARP: + s = format (s, "\n%U%U", + format_white_space, indent, + format_arp_packet, payload); + break; + } + + return s; +} + +#ifndef __KERNEL__ +u8 * format_hostname (u8 * s, va_list * args) +{ + char buffer[1024]; + char * b = buffer; + if (gethostname (b, sizeof (buffer)) < 0) + b = "noname"; + return format (s, "%s", b); +} +#endif + +#ifndef __KERNEL__ +u8 * format_timeval (u8 * s, va_list * args) +{ + char * fmt = va_arg (*args, char *); + struct timeval * tv = va_arg (*args, struct timeval *); + struct tm * tm; + word msec; + char * f, c; + + if (! fmt) + fmt = "y/m/d H:M:S:F"; + + if (! tv) + { + static struct timeval now; + gettimeofday (&now, 0); + tv = &now; + } + + msec = flt_round_nearest (1e-3 * tv->tv_usec); + if (msec >= 1000) + { msec = 0; tv->tv_sec++; } + + { + time_t t = tv->tv_sec; + tm = localtime (&t); + } + + for (f = fmt; *f; f++) + { + uword what; + char * what_fmt = "%d"; + + switch (c = *f) + { + default: + vec_add1 (s, c); + continue; + + case 'y': + what = 1900 + tm->tm_year; + what_fmt = "%4d"; + break; + case 'm': + what = tm->tm_mon + 1; + what_fmt = "%2d"; + break; + case 'd': + what = tm->tm_mday; + what_fmt = "%2d"; + break; + case 'H': + what = tm->tm_hour; + what_fmt = "%02d"; + break; + case 'M': + what = tm->tm_min; + what_fmt = "%02d"; + break; + case 'S': + what = tm->tm_sec; + what_fmt = "%02d"; + break; + case 'F': + what = msec; + what_fmt = "%03d"; + break; + } + + s = format (s, what_fmt, what); + } + + return s; +} + +u8 * format_time_float (u8 * s, va_list * args) +{ + u8 * fmt = va_arg (*args, u8 *); + f64 t = va_arg (*args, f64); + struct timeval tv; + if (t <= 0) + t = unix_time_now (); + tv.tv_sec = t; + tv.tv_usec = 1e6*(t - tv.tv_sec); + return format (s, "%U", format_timeval, fmt, &tv); +} + +u8 * format_signal (u8 * s, va_list * args) +{ + uword signum = va_arg (*args, uword); + char * t = 0; + switch (signum) + { +#define _(x) case x: t = #x; break; + _ (SIGHUP); + _ (SIGINT); + _ (SIGQUIT); + _ (SIGILL); + _ (SIGTRAP); + _ (SIGABRT); + _ (SIGBUS); + _ (SIGFPE); + _ (SIGKILL); + _ (SIGUSR1); + _ (SIGSEGV); + _ (SIGUSR2); + _ (SIGPIPE); + _ (SIGALRM); + _ (SIGTERM); +#ifdef SIGSTKFLT + _ (SIGSTKFLT); +#endif + _ (SIGCHLD); + _ (SIGCONT); + _ (SIGSTOP); + _ (SIGTSTP); + _ (SIGTTIN); + _ (SIGTTOU); + _ (SIGURG); + _ (SIGXCPU); + _ (SIGXFSZ); + _ (SIGVTALRM); + _ (SIGPROF); + _ (SIGWINCH); + _ (SIGIO); + _ (SIGPWR); +#ifdef SIGSYS + _ (SIGSYS); +#endif +#undef _ + default: + return format (s, "unknown %d", signum); + } + + vec_add (s, t, strlen (t)); + return s; +} + +u8 * format_ucontext_pc (u8 * s, va_list * args) +{ + ucontext_t * uc __attribute__((unused)); + unsigned long * regs = 0; + uword reg_no = 0; + + uc = va_arg (*args, ucontext_t *); + +#if defined (powerpc) + regs = &uc->uc_mcontext.uc_regs->gregs[0]; +#elif defined (powerpc64) + regs = &uc->uc_mcontext.uc_regs->gp_regs[0]; +#elif defined (i386) || defined (__x86_64__) + regs = (void *) &uc->uc_mcontext.gregs[0]; +#endif + +#if defined (powerpc) || defined (powerpc64) + reg_no = PT_NIP; +#elif defined (i386) + reg_no = REG_EIP; +#elif defined (__x86_64__) + reg_no = REG_RIP; +#else + reg_no = 0; + regs = 0; +#endif + + if (! regs) + return format (s, "unsupported"); + else + return format (s, "%p", regs[reg_no]); +} + +uword +unformat_unix_gid (unformat_input_t * input, va_list * args) +{ + gid_t *gid = va_arg (*args, gid_t *); + struct group *grp = 0; + int r; + u8 *s; + + if (unformat (input, "%d", &r)) + { + grp = getgrgid (r); + } + else if (unformat (input, "%s", &s)) + { + grp = getgrnam ((char *) s); + vec_free (s); + } + if (grp) + { + *gid = grp->gr_gid; + return 1; + } + return 0; +} + +#endif /* __KERNEL__ */ diff --git a/src/vppinfra/unix-kelog.c b/src/vppinfra/unix-kelog.c new file mode 100644 index 00000000..88428ee8 --- /dev/null +++ b/src/vppinfra/unix-kelog.c @@ -0,0 +1,415 @@ +/* + Copyright (c) 2010 Cisco and/or its affiliates. + + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. +*/ + +#include <vppinfra/error.h> +#include <vppinfra/unix.h> +#include <vppinfra/elog.h> +#include <vppinfra/format.h> +#include <vppinfra/os.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <time.h> + +typedef enum +{ + RUNNING = 0, + WAKEUP, +} sched_event_type_t; + +typedef struct +{ + u32 cpu; + u8 *task; + u32 pid; + f64 timestamp; + sched_event_type_t type; +} sched_event_t; + +void +kelog_init (elog_main_t * em, char *kernel_tracer, u32 n_events) +{ + int enable_fd, current_tracer_fd, data_fd; + int len; + struct timespec ts, ts2; + char *trace_enable = "/debug/tracing/tracing_enabled"; + char *current_tracer = "/debug/tracing/current_tracer"; + char *trace_data = "/debug/tracing/trace"; + f64 realtime, monotonic; + f64 freq, secs_per_clock; + + ASSERT (kernel_tracer); + + /*$$$$ fixme */ + n_events = 1 << 18; + + /* init first so we won't hurt ourselves if we bail */ + elog_init (em, n_events); + + enable_fd = open (trace_enable, O_RDWR); + if (enable_fd < 0) + { + clib_warning ("Couldn't open %s", trace_enable); + return; + } + /* disable kernel tracing */ + if (write (enable_fd, "0\n", 2) != 2) + { + clib_unix_warning ("disable tracing"); + close (enable_fd); + return; + } + + /* + * open + clear the data buffer. + * see .../linux/kernel/trace/trace.c:tracing_open() + */ + data_fd = open (trace_data, O_RDWR | O_TRUNC); + if (data_fd < 0) + { + clib_warning ("Couldn't open+clear %s", trace_data); + return; + } + close (data_fd); + + /* configure tracing */ + current_tracer_fd = open (current_tracer, O_RDWR); + + if (current_tracer_fd < 0) + { + clib_warning ("Couldn't open %s", current_tracer); + close (enable_fd); + return; + } + + len = strlen (kernel_tracer); + + if (write (current_tracer_fd, kernel_tracer, len) != len) + { + clib_unix_warning ("configure trace"); + close (current_tracer_fd); + close (enable_fd); + return; + } + + close (current_tracer_fd); + + /* + * The kernel event log uses CLOCK_MONOTONIC timestamps, + * not CLOCK_REALTIME timestamps. These differ by a constant + * but the constant is not available in user mode. + * This estimate will be off by one syscall round-trip. + */ + clib_time_init (&em->cpu_timer); + em->init_time.cpu = em->cpu_timer.init_cpu_time; + syscall (SYS_clock_gettime, CLOCK_MONOTONIC, &ts); + + /* enable kernel tracing */ + if (write (enable_fd, "1\n", 2) != 2) + { + clib_unix_warning ("enable tracing"); + close (enable_fd); + return; + } + + close (enable_fd); +} + + +u8 * +format_sched_event (u8 * s, va_list * va) +{ + sched_event_t *e = va_arg (*va, sched_event_t *); + + s = format (s, "cpu %d task %10s type %s timestamp %12.6f\n", + e->cpu, e->task, e->type ? "WAKEUP " : "RUNNING", e->timestamp); + + return s; +} + +sched_event_t * +parse_sched_switch_trace (u8 * tdata, u32 * index) +{ + u8 *cp = tdata + *index; + u8 *limit = tdata + vec_len (tdata); + int colons; + static sched_event_t event; + sched_event_t *e = &event; + static u8 *task_name; + u32 secs, usecs; + int i; + +again: + /* eat leading w/s */ + while (cp < limit && (*cp == ' ' && *cp == '\t')) + cp++; + if (cp == limit) + return 0; + + /* header line */ + if (*cp == '#') + { + while (cp < limit && (*cp != '\n')) + cp++; + if (*cp == '\n') + { + cp++; + goto again; + } + clib_warning ("bugger 0"); + return 0; + } + + while (cp < limit && *cp != ']') + cp++; + + if (*cp == 0) + return 0; + + if (*cp != ']') + { + clib_warning ("bugger 0.1"); + return 0; + } + + cp++; + while (cp < limit && (*cp == ' ' && *cp == '\t')) + cp++; + if (cp == limit) + { + clib_warning ("bugger 0.2"); + return 0; + } + + secs = atoi (cp); + + while (cp < limit && (*cp != '.')) + cp++; + + if (cp == limit) + { + clib_warning ("bugger 0.3"); + return 0; + } + + cp++; + + usecs = atoi (cp); + + e->timestamp = ((f64) secs) + ((f64) usecs) * 1e-6; + + /* eat up to third colon */ + for (i = 0; i < 3; i++) + { + while (cp < limit && *cp != ':') + cp++; + cp++; + } + --cp; + if (*cp != ':') + { + clib_warning ("bugger 1"); + return 0; + } + /* aim at '>' (switch-to) / '+' (wakeup) */ + cp += 5; + if (cp >= limit) + { + clib_warning ("bugger 2"); + return 0; + } + if (*cp == '>') + e->type = RUNNING; + else if (*cp == '+') + e->type = WAKEUP; + else + { + clib_warning ("bugger 3"); + return 0; + } + + cp += 3; + if (cp >= limit) + { + clib_warning ("bugger 4"); + return 0; + } + + e->cpu = atoi (cp); + cp += 4; + + if (cp >= limit) + { + clib_warning ("bugger 4"); + return 0; + } + while (cp < limit && (*cp == ' ' || *cp == '\t')) + cp++; + + e->pid = atoi (cp); + + for (i = 0; i < 2; i++) + { + while (cp < limit && *cp != ':') + cp++; + cp++; + } + --cp; + if (*cp != ':') + { + clib_warning ("bugger 5"); + return 0; + } + + cp += 3; + if (cp >= limit) + { + clib_warning ("bugger 6"); + return 0; + } + while (cp < limit && (*cp != ' ' && *cp != '\n')) + { + vec_add1 (task_name, *cp); + cp++; + } + vec_add1 (task_name, 0); + /* _vec_len() = 0 in caller */ + e->task = task_name; + + if (cp < limit) + cp++; + + *index = cp - tdata; + return e; +} + +static u32 +elog_id_for_pid (elog_main_t * em, u8 * name, u32 pid) +{ + uword *p, r; + mhash_t *h = &em->string_table_hash; + + if (!em->string_table_hash.hash) + mhash_init (h, sizeof (uword), sizeof (pid)); + + p = mhash_get (h, &pid); + if (p) + return p[0]; + r = elog_string (em, "%s(%d)", name, pid); + mhash_set (h, &pid, r, /* old_value */ 0); + return r; +} + +void +kelog_collect_sched_switch_trace (elog_main_t * em) +{ + int enable_fd, data_fd; + char *trace_enable = "/debug/tracing/tracing_enabled"; + char *trace_data = "/debug/tracing/trace"; + u8 *data = 0; + u8 *dp; + int bytes, total_bytes; + u32 pos; + sched_event_t *evt; + u64 nsec_to_add; + u32 index; + f64 clocks_per_sec; + + enable_fd = open (trace_enable, O_RDWR); + if (enable_fd < 0) + { + clib_warning ("Couldn't open %s", trace_enable); + return; + } + /* disable kernel tracing */ + if (write (enable_fd, "0\n", 2) != 2) + { + clib_unix_warning ("disable tracing"); + close (enable_fd); + return; + } + close (enable_fd); + + /* Read the trace data */ + data_fd = open (trace_data, O_RDWR); + if (data_fd < 0) + { + clib_warning ("Couldn't open %s", trace_data); + return; + } + + /* + * Extract trace into a vector. Note that seq_printf() [kernel] + * is not guaranteed to produce 4096 bytes at a time. + */ + vec_validate (data, 4095); + total_bytes = 0; + pos = 0; + while (1) + { + bytes = read (data_fd, data + pos, 4096); + if (bytes <= 0) + break; + + total_bytes += bytes; + _vec_len (data) = total_bytes; + + pos = vec_len (data); + vec_validate (data, vec_len (data) + 4095); + } + vec_add1 (data, 0); + + /* Synthesize events */ + em->is_enabled = 1; + + index = 0; + while ((evt = parse_sched_switch_trace (data, &index))) + { + u64 fake_cpu_clock; + + fake_cpu_clock = evt->timestamp * em->cpu_timer.clocks_per_second; + { + ELOG_TYPE_DECLARE (e) = + { + .format = "%d: %s %s",.format_args = "i4T4t4",.n_enum_strings = + 2,.enum_strings = + { + "running", "wakeup",} + ,}; + struct + { + u32 cpu, string_table_offset, which; + } *ed; + + ed = elog_event_data_not_inline (em, &__ELOG_TYPE_VAR (e), + &em->default_track, fake_cpu_clock); + ed->cpu = evt->cpu; + ed->string_table_offset = elog_id_for_pid (em, evt->task, evt->pid); + ed->which = evt->type; + } + _vec_len (evt->task) = 0; + } + em->is_enabled = 0; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/unix-misc.c b/src/vppinfra/unix-misc.c new file mode 100644 index 00000000..361015b4 --- /dev/null +++ b/src/vppinfra/unix-misc.c @@ -0,0 +1,237 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/error.h> +#include <vppinfra/os.h> +#include <vppinfra/unix.h> + +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/uio.h> /* writev */ +#include <fcntl.h> +#include <stdio.h> /* for sprintf */ + +__thread uword __os_thread_index = 0; + +clib_error_t * +unix_file_n_bytes (char *file, uword * result) +{ + struct stat s; + + if (stat (file, &s) < 0) + return clib_error_return_unix (0, "stat `%s'", file); + + if (S_ISREG (s.st_mode)) + *result = s.st_size; + else + *result = 0; + + return /* no error */ 0; +} + +clib_error_t * +unix_file_read_contents (char *file, u8 * result, uword n_bytes) +{ + int fd = -1; + uword n_done, n_left; + clib_error_t *error = 0; + u8 *v = result; + + if ((fd = open (file, 0)) < 0) + return clib_error_return_unix (0, "open `%s'", file); + + n_left = n_bytes; + n_done = 0; + while (n_left > 0) + { + int n_read; + if ((n_read = read (fd, v + n_done, n_left)) < 0) + { + error = clib_error_return_unix (0, "open `%s'", file); + goto done; + } + + /* End of file. */ + if (n_read == 0) + break; + + n_left -= n_read; + n_done += n_read; + } + + if (n_left > 0) + { + error = + clib_error_return (0, + " `%s' expected to read %wd bytes; read only %wd", + file, n_bytes, n_bytes - n_left); + goto done; + } + +done: + close (fd); + return error; +} + +clib_error_t * +unix_file_contents (char *file, u8 ** result) +{ + uword n_bytes; + clib_error_t *error = 0; + u8 *v; + + if ((error = unix_file_n_bytes (file, &n_bytes))) + return error; + + v = 0; + vec_resize (v, n_bytes); + + error = unix_file_read_contents (file, v, n_bytes); + + if (error) + vec_free (v); + else + *result = v; + + return error; +} + +clib_error_t * +unix_proc_file_contents (char *file, u8 ** result) +{ + u8 *rv = 0; + uword pos; + int bytes, fd; + + /* Unfortunately, stat(/proc/XXX) returns zero... */ + fd = open (file, O_RDONLY); + + if (fd < 0) + return clib_error_return_unix (0, "open `%s'", file); + + vec_validate (rv, 4095); + pos = 0; + while (1) + { + bytes = read (fd, rv + pos, 4096); + if (bytes < 0) + { + close (fd); + vec_free (rv); + return clib_error_return_unix (0, "read '%s'", file); + } + + if (bytes == 0) + { + _vec_len (rv) = pos; + break; + } + pos += bytes; + vec_validate (rv, pos + 4095); + } + *result = rv; + close (fd); + return 0; +} + +void os_panic (void) __attribute__ ((weak)); + +void +os_panic (void) +{ + abort (); +} + +void os_exit (int) __attribute__ ((weak)); + +void +os_exit (int code) +{ + exit (code); +} + +void os_puts (u8 * string, uword string_length, uword is_error) + __attribute__ ((weak)); + +void +os_puts (u8 * string, uword string_length, uword is_error) +{ + int cpu = os_get_thread_index (); + int nthreads = os_get_nthreads (); + char buf[64]; + int fd = is_error ? 2 : 1; + struct iovec iovs[2]; + int n_iovs = 0; + + if (nthreads > 1) + { + snprintf (buf, sizeof (buf), "%d: ", cpu); + + iovs[n_iovs].iov_base = buf; + iovs[n_iovs].iov_len = strlen (buf); + n_iovs++; + } + + iovs[n_iovs].iov_base = string; + iovs[n_iovs].iov_len = string_length; + n_iovs++; + + if (writev (fd, iovs, n_iovs) < 0) + ; +} + +void os_out_of_memory (void) __attribute__ ((weak)); +void +os_out_of_memory (void) +{ + os_panic (); +} + +uword os_get_nthreads (void) __attribute__ ((weak)); +uword +os_get_nthreads (void) +{ + return 1; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/unix.h b/src/vppinfra/unix.h new file mode 100644 index 00000000..29114cfe --- /dev/null +++ b/src/vppinfra/unix.h @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_unix_h +#define included_clib_unix_h + +#include <vppinfra/error.h> + +/* Number of bytes in a Unix file. */ +clib_error_t *unix_file_n_bytes (char *file, uword * result); + +/* Read file contents into given buffer. */ +clib_error_t *unix_file_read_contents (char *file, u8 * result, + uword n_bytes); + +/* Read and return contents of Unix file. */ +clib_error_t *unix_file_contents (char *file, u8 ** result); + +/* As above but for /proc file system on Linux. */ +clib_error_t *unix_proc_file_contents (char *file, u8 ** result); + +#endif /* included_clib_unix_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/unix_error.def b/src/vppinfra/unix_error.def new file mode 100644 index 00000000..76633dbb --- /dev/null +++ b/src/vppinfra/unix_error.def @@ -0,0 +1,145 @@ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +_ (EPERM, "Operation not permitted") +_ (ENOENT, "No such file or directory") +_ (ESRCH, "No such process") +_ (EINTR, "Interrupted system call") +_ (EIO, "I/O error") +_ (ENXIO, "No such device or address") +_ (E2BIG, "Arg list too long") +_ (ENOEXEC, "Exec format error") +_ (EBADF, "Bad file number") +_ (ECHILD, "No child processes") +_ (ENOMEM, "Out of memory") +_ (EACCES, "Permission denied") +_ (EFAULT, "Bad address") +_ (ENOTBLK, "Block device required") +_ (EBUSY, "Device or resource busy") +_ (EEXIST, "File exists") +_ (EXDEV, "Cross-device link") +_ (ENODEV, "No such device") +_ (ENOTDIR, "Not a directory") +_ (EISDIR, "Is a directory") +_ (EINVAL, "Invalid argument") +_ (ENFILE, "File table overflow") +_ (EMFILE, "Too many open files") +_ (ENOTTY, "Not a typewriter") +_ (ETXTBSY, "Text file busy") +_ (EFBIG, "File too large") +_ (ENOSPC, "No space left on device") +_ (ESPIPE, "Illegal seek") +_ (EROFS, "Read-only file system") +_ (EMLINK, "Too many links") +_ (EPIPE, "Broken pipe") +_ (EDOM, "Math argument out of domain of func") +_ (ERANGE, "Math result not representable") +_ (EDEADLK, "Resource deadlock would occur") +_ (ENAMETOOLONG, "File name too long") +_ (ENOLCK, "No record locks available") +_ (ENOSYS, "Function not implemented") +_ (ENOTEMPTY, "Directory not empty") +_ (ELOOP, "Too many symbolic links encountered") +_ (EWOULDBLOCK, "Operation would block") +_ (ENOMSG, "No message of desired type") +_ (EIDRM, "Identifier removed") +_ (ECHRNG, "Channel number out of range") +_ (EL2NSYNC, "Level 2 not synchronized") +_ (EL3HLT, "Level 3 halted") +_ (EL3RST, "Level 3 reset") +_ (ELNRNG, "Link number out of range") +_ (EUNATCH, "Protocol driver not attached") +_ (ENOCSI, "No CSI structure available") +_ (EL2HLT, "Level 2 halted") +_ (EBADE, "Invalid exchange") +_ (EBADR, "Invalid request descriptor") +_ (EXFULL, "Exchange full") +_ (ENOANO, "No anode") +_ (EBADRQC, "Invalid request code") +_ (EBADSLT, "Invalid slot") +_ (EBFONT, "Bad font file format") +_ (ENOSTR, "Device not a stream") +_ (ENODATA, "No data available") +_ (ETIME, "Timer expired") +_ (ENOSR, "Out of streams resources") +_ (ENONET, "Machine is not on the network") +_ (ENOPKG, "Package not installed") +_ (EREMOTE, "Object is remote") +_ (ENOLINK, "Link has been severed") +_ (EADV, "Advertise error") +_ (ESRMNT, "Srmount error") +_ (ECOMM, "Communication error on send") +_ (EPROTO, "Protocol error") +_ (EMULTIHOP, "Multihop attempted") +_ (EDOTDOT, "RFS specific error") +_ (EBADMSG, "Not a data message") +_ (EOVERFLOW, "Value too large for defined data type") +_ (ENOTUNIQ, "Name not unique on network") +_ (EBADFD, "File descriptor in bad state") +_ (EREMCHG, "Remote address changed") +_ (ELIBACC, "Can not access a needed shared library") +_ (ELIBBAD, "Accessing a corrupted shared library") +_ (ELIBSCN, "lib section in a.out corrupted") +_ (ELIBMAX, "Attempting to link in too many shared libraries") +_ (ELIBEXEC, "Cannot exec a shared library directly") +_ (EILSEQ, "Illegal byte sequence") +_ (ERESTART, "Interrupted system call should be restarted") +_ (ESTRPIPE, "Streams pipe error") +_ (EUSERS, "Too many users") +_ (ENOTSOCK, "Socket operation on non-socket") +_ (EDESTADDRREQ, "Destination address required") +_ (EMSGSIZE, "Message too long") +_ (EPROTOTYPE, "Protocol wrong type for socket") +_ (ENOPROTOOPT, "Protocol not available") +_ (EPROTONOSUPPORT, "Protocol not supported") +_ (ESOCKTNOSUPPORT, "Socket type not supported") +_ (EOPNOTSUPP, "Operation not supported on transport endpoint") +_ (EPFNOSUPPORT, "Protocol family not supported") +_ (EAFNOSUPPORT, "Address family not supported by protocol") +_ (EADDRINUSE, "Address already in use") +_ (EADDRNOTAVAIL, "Cannot assign requested address") +_ (ENETDOWN, "Network is down") +_ (ENETUNREACH, "Network is unreachable") +_ (ENETRESET, "Network dropped connection because of reset") +_ (ECONNABORTED, "Software caused connection abort") +_ (ECONNRESET, "Connection reset by peer") +_ (ENOBUFS, "No buffer space available") +_ (EISCONN, "Transport endpoint is already connected") +_ (ENOTCONN, "Transport endpoint is not connected") +_ (ESHUTDOWN, "Cannot send after transport endpoint shutdown") +_ (ETOOMANYREFS, "Too many references: cannot splice") +_ (ETIMEDOUT, "Connection timed out") +_ (ECONNREFUSED, "Connection refused") +_ (EHOSTDOWN, "Host is down") +_ (EHOSTUNREACH, "No route to host") +_ (EALREADY, "Operation already in progress") +_ (EINPROGRESS, "Operation now in progress") +_ (ESTALE, "Stale NFS file handle") +_ (EUCLEAN, "Structure needs cleaning") +_ (ENOTNAM, "Not a XENIX named type file") +_ (ENAVAIL, "No XENIX semaphores available") +_ (EISNAM, "Is a named type file") +_ (EREMOTEIO, "Remote I/O error") +_ (EDQUOT, "Quota exceeded") +_ (ENOMEDIUM, "No medium found") +_ (EMEDIUMTYPE, "Wrong medium type") diff --git a/src/vppinfra/valgrind.h b/src/vppinfra/valgrind.h new file mode 100644 index 00000000..e74d7e82 --- /dev/null +++ b/src/vppinfra/valgrind.h @@ -0,0 +1,4030 @@ +/* -*- c -*- + ---------------------------------------------------------------- + + Notice that the following BSD-style license applies to this one + file (valgrind.h) only. The rest of Valgrind is licensed under the + terms of the GNU General Public License, version 2, unless + otherwise indicated. See the COPYING file in the source + distribution for details. + + ---------------------------------------------------------------- + + This file is part of Valgrind, a dynamic binary instrumentation + framework. + + Copyright (C) 2000-2009 Julian Seward. All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + 2. The origin of this software must not be misrepresented; you must + not claim that you wrote the original software. If you use this + software in a product, an acknowledgment in the product + documentation would be appreciated but is not required. + + 3. Altered source versions must be plainly marked as such, and must + not be misrepresented as being the original software. + + 4. The name of the author may not be used to endorse or promote + products derived from this software without specific prior written + permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + ---------------------------------------------------------------- + + Notice that the above BSD-style license applies to this one file + (valgrind.h) only. The entire rest of Valgrind is licensed under + the terms of the GNU General Public License, version 2. See the + COPYING file in the source distribution for details. + + ---------------------------------------------------------------- +*/ + + +/* This file is for inclusion into client (your!) code. + + You can use these macros to manipulate and query Valgrind's + execution inside your own programs. + + The resulting executables will still run without Valgrind, just a + little bit more slowly than they otherwise would, but otherwise + unchanged. When not running on valgrind, each client request + consumes very few (eg. 7) instructions, so the resulting performance + loss is negligible unless you plan to execute client requests + millions of times per second. Nevertheless, if that is still a + problem, you can compile with the NVALGRIND symbol defined (gcc + -DNVALGRIND) so that client requests are not even compiled in. */ + +#ifndef __VALGRIND_H +#define __VALGRIND_H + +#include <stdarg.h> + +/* Nb: this file might be included in a file compiled with -ansi. So + we can't use C++ style "//" comments nor the "asm" keyword (instead + use "__asm__"). */ + +/* Derive some tags indicating what the target platform is. Note + that in this file we're using the compiler's CPP symbols for + identifying architectures, which are different to the ones we use + within the rest of Valgrind. Note, __powerpc__ is active for both + 32 and 64-bit PPC, whereas __powerpc64__ is only active for the + latter (on Linux, that is). */ +#undef PLAT_x86_linux +#undef PLAT_amd64_linux +#undef PLAT_ppc32_linux +#undef PLAT_ppc64_linux +#undef PLAT_ppc32_aix5 +#undef PLAT_ppc64_aix5 + + +#if defined(_AIX) && defined(__64BIT__) +#define PLAT_ppc64_aix5 1 +#elif defined(_AIX) && !defined(__64BIT__) +#define PLAT_ppc32_aix5 1 +#elif defined(__APPLE__) && defined(__i386__) +#define PLAT_x86_darwin 1 +#elif defined(__APPLE__) && defined(__x86_64__) +#define PLAT_amd64_darwin 1 +#elif defined(__i386__) +#define PLAT_x86_linux 1 +#elif defined(__x86_64__) +#define PLAT_amd64_linux 1 +#elif defined(__powerpc__) && !defined(__powerpc64__) +#define PLAT_ppc32_linux 1 +#elif defined(__powerpc__) && defined(__powerpc64__) +#define PLAT_ppc64_linux 1 +#else +/* If we're not compiling for our target platform, don't generate + any inline asms. */ +#if !defined(NVALGRIND) +#define NVALGRIND 1 +#endif +#endif + + +/* ------------------------------------------------------------------ */ +/* ARCHITECTURE SPECIFICS for SPECIAL INSTRUCTIONS. There is nothing */ +/* in here of use to end-users -- skip to the next section. */ +/* ------------------------------------------------------------------ */ + +#if defined(NVALGRIND) + +/* Define NVALGRIND to completely remove the Valgrind magic sequence + from the compiled code (analogous to NDEBUG's effects on + assert()) */ +#define VALGRIND_DO_CLIENT_REQUEST( \ + _zzq_rlval, _zzq_default, _zzq_request, \ + _zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5) \ + { \ + (_zzq_rlval) = (_zzq_default); \ + } + +#else /* ! NVALGRIND */ + +/* The following defines the magic code sequences which the JITter + spots and handles magically. Don't look too closely at them as + they will rot your brain. + + The assembly code sequences for all architectures is in this one + file. This is because this file must be stand-alone, and we don't + want to have multiple files. + + For VALGRIND_DO_CLIENT_REQUEST, we must ensure that the default + value gets put in the return slot, so that everything works when + this is executed not under Valgrind. Args are passed in a memory + block, and so there's no intrinsic limit to the number that could + be passed, but it's currently five. + + The macro args are: + _zzq_rlval result lvalue + _zzq_default default value (result returned when running on real CPU) + _zzq_request request code + _zzq_arg1..5 request params + + The other two macros are used to support function wrapping, and are + a lot simpler. VALGRIND_GET_NR_CONTEXT returns the value of the + guest's NRADDR pseudo-register and whatever other information is + needed to safely run the call original from the wrapper: on + ppc64-linux, the R2 value at the divert point is also needed. This + information is abstracted into a user-visible type, OrigFn. + + VALGRIND_CALL_NOREDIR_* behaves the same as the following on the + guest, but guarantees that the branch instruction will not be + redirected: x86: call *%eax, amd64: call *%rax, ppc32/ppc64: + branch-and-link-to-r11. VALGRIND_CALL_NOREDIR is just text, not a + complete inline asm, since it needs to be combined with more magic + inline asm stuff to be useful. +*/ + +/* ------------------------- x86-{linux,darwin} ---------------- */ + +#if defined(PLAT_x86_linux) || defined(PLAT_x86_darwin) + +typedef struct +{ + unsigned int nraddr; /* where's the code? */ +} +OrigFn; + +#define __SPECIAL_INSTRUCTION_PREAMBLE \ + "roll $3, %%edi ; roll $13, %%edi\n\t" \ + "roll $29, %%edi ; roll $19, %%edi\n\t" + +#define VALGRIND_DO_CLIENT_REQUEST( \ + _zzq_rlval, _zzq_default, _zzq_request, \ + _zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5) \ + { volatile unsigned int _zzq_args[6]; \ + volatile unsigned int _zzq_result; \ + _zzq_args[0] = (unsigned int)(_zzq_request); \ + _zzq_args[1] = (unsigned int)(_zzq_arg1); \ + _zzq_args[2] = (unsigned int)(_zzq_arg2); \ + _zzq_args[3] = (unsigned int)(_zzq_arg3); \ + _zzq_args[4] = (unsigned int)(_zzq_arg4); \ + _zzq_args[5] = (unsigned int)(_zzq_arg5); \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %EDX = client_request ( %EAX ) */ \ + "xchgl %%ebx,%%ebx" \ + : "=d" (_zzq_result) \ + : "a" (&_zzq_args[0]), "0" (_zzq_default) \ + : "cc", "memory" \ + ); \ + _zzq_rlval = _zzq_result; \ + } + +#define VALGRIND_GET_NR_CONTEXT(_zzq_rlval) \ + { volatile OrigFn* _zzq_orig = &(_zzq_rlval); \ + volatile unsigned int __addr; \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %EAX = guest_NRADDR */ \ + "xchgl %%ecx,%%ecx" \ + : "=a" (__addr) \ + : \ + : "cc", "memory" \ + ); \ + _zzq_orig->nraddr = __addr; \ + } + +#define VALGRIND_CALL_NOREDIR_EAX \ + __SPECIAL_INSTRUCTION_PREAMBLE \ + /* call-noredir *%EAX */ \ + "xchgl %%edx,%%edx\n\t" +#endif /* PLAT_x86_linux || PLAT_x86_darwin */ + +/* ------------------------ amd64-{linux,darwin} --------------- */ + +#if defined(PLAT_amd64_linux) || defined(PLAT_amd64_darwin) + +typedef struct +{ + unsigned long long int nraddr; /* where's the code? */ +} +OrigFn; + +#define __SPECIAL_INSTRUCTION_PREAMBLE \ + "rolq $3, %%rdi ; rolq $13, %%rdi\n\t" \ + "rolq $61, %%rdi ; rolq $51, %%rdi\n\t" + +#define VALGRIND_DO_CLIENT_REQUEST( \ + _zzq_rlval, _zzq_default, _zzq_request, \ + _zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5) \ + { volatile unsigned long long int _zzq_args[6]; \ + volatile unsigned long long int _zzq_result; \ + _zzq_args[0] = (unsigned long long int)(_zzq_request); \ + _zzq_args[1] = (unsigned long long int)(_zzq_arg1); \ + _zzq_args[2] = (unsigned long long int)(_zzq_arg2); \ + _zzq_args[3] = (unsigned long long int)(_zzq_arg3); \ + _zzq_args[4] = (unsigned long long int)(_zzq_arg4); \ + _zzq_args[5] = (unsigned long long int)(_zzq_arg5); \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %RDX = client_request ( %RAX ) */ \ + "xchgq %%rbx,%%rbx" \ + : "=d" (_zzq_result) \ + : "a" (&_zzq_args[0]), "0" (_zzq_default) \ + : "cc", "memory" \ + ); \ + _zzq_rlval = _zzq_result; \ + } + +#define VALGRIND_GET_NR_CONTEXT(_zzq_rlval) \ + { volatile OrigFn* _zzq_orig = &(_zzq_rlval); \ + volatile unsigned long long int __addr; \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %RAX = guest_NRADDR */ \ + "xchgq %%rcx,%%rcx" \ + : "=a" (__addr) \ + : \ + : "cc", "memory" \ + ); \ + _zzq_orig->nraddr = __addr; \ + } + +#define VALGRIND_CALL_NOREDIR_RAX \ + __SPECIAL_INSTRUCTION_PREAMBLE \ + /* call-noredir *%RAX */ \ + "xchgq %%rdx,%%rdx\n\t" +#endif /* PLAT_amd64_linux || PLAT_amd64_darwin */ + +/* ------------------------ ppc32-linux ------------------------ */ + +#if defined(PLAT_ppc32_linux) + +typedef struct +{ + unsigned int nraddr; /* where's the code? */ +} +OrigFn; + +#define __SPECIAL_INSTRUCTION_PREAMBLE \ + "rlwinm 0,0,3,0,0 ; rlwinm 0,0,13,0,0\n\t" \ + "rlwinm 0,0,29,0,0 ; rlwinm 0,0,19,0,0\n\t" + +#define VALGRIND_DO_CLIENT_REQUEST( \ + _zzq_rlval, _zzq_default, _zzq_request, \ + _zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5) \ + \ + { unsigned int _zzq_args[6]; \ + unsigned int _zzq_result; \ + unsigned int* _zzq_ptr; \ + _zzq_args[0] = (unsigned int)(_zzq_request); \ + _zzq_args[1] = (unsigned int)(_zzq_arg1); \ + _zzq_args[2] = (unsigned int)(_zzq_arg2); \ + _zzq_args[3] = (unsigned int)(_zzq_arg3); \ + _zzq_args[4] = (unsigned int)(_zzq_arg4); \ + _zzq_args[5] = (unsigned int)(_zzq_arg5); \ + _zzq_ptr = _zzq_args; \ + __asm__ volatile("mr 3,%1\n\t" /*default*/ \ + "mr 4,%2\n\t" /*ptr*/ \ + __SPECIAL_INSTRUCTION_PREAMBLE \ + /* %R3 = client_request ( %R4 ) */ \ + "or 1,1,1\n\t" \ + "mr %0,3" /*result*/ \ + : "=b" (_zzq_result) \ + : "b" (_zzq_default), "b" (_zzq_ptr) \ + : "cc", "memory", "r3", "r4"); \ + _zzq_rlval = _zzq_result; \ + } + +#define VALGRIND_GET_NR_CONTEXT(_zzq_rlval) \ + { volatile OrigFn* _zzq_orig = &(_zzq_rlval); \ + unsigned int __addr; \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %R3 = guest_NRADDR */ \ + "or 2,2,2\n\t" \ + "mr %0,3" \ + : "=b" (__addr) \ + : \ + : "cc", "memory", "r3" \ + ); \ + _zzq_orig->nraddr = __addr; \ + } + +#define VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + __SPECIAL_INSTRUCTION_PREAMBLE \ + /* branch-and-link-to-noredir *%R11 */ \ + "or 3,3,3\n\t" +#endif /* PLAT_ppc32_linux */ + +/* ------------------------ ppc64-linux ------------------------ */ + +#if defined(PLAT_ppc64_linux) + +typedef struct +{ + unsigned long long int nraddr; /* where's the code? */ + unsigned long long int r2; /* what tocptr do we need? */ +} +OrigFn; + +#define __SPECIAL_INSTRUCTION_PREAMBLE \ + "rotldi 0,0,3 ; rotldi 0,0,13\n\t" \ + "rotldi 0,0,61 ; rotldi 0,0,51\n\t" + +#define VALGRIND_DO_CLIENT_REQUEST( \ + _zzq_rlval, _zzq_default, _zzq_request, \ + _zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5) \ + \ + { unsigned long long int _zzq_args[6]; \ + register unsigned long long int _zzq_result __asm__("r3"); \ + register unsigned long long int* _zzq_ptr __asm__("r4"); \ + _zzq_args[0] = (unsigned long long int)(_zzq_request); \ + _zzq_args[1] = (unsigned long long int)(_zzq_arg1); \ + _zzq_args[2] = (unsigned long long int)(_zzq_arg2); \ + _zzq_args[3] = (unsigned long long int)(_zzq_arg3); \ + _zzq_args[4] = (unsigned long long int)(_zzq_arg4); \ + _zzq_args[5] = (unsigned long long int)(_zzq_arg5); \ + _zzq_ptr = _zzq_args; \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %R3 = client_request ( %R4 ) */ \ + "or 1,1,1" \ + : "=r" (_zzq_result) \ + : "0" (_zzq_default), "r" (_zzq_ptr) \ + : "cc", "memory"); \ + _zzq_rlval = _zzq_result; \ + } + +#define VALGRIND_GET_NR_CONTEXT(_zzq_rlval) \ + { volatile OrigFn* _zzq_orig = &(_zzq_rlval); \ + register unsigned long long int __addr __asm__("r3"); \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %R3 = guest_NRADDR */ \ + "or 2,2,2" \ + : "=r" (__addr) \ + : \ + : "cc", "memory" \ + ); \ + _zzq_orig->nraddr = __addr; \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %R3 = guest_NRADDR_GPR2 */ \ + "or 4,4,4" \ + : "=r" (__addr) \ + : \ + : "cc", "memory" \ + ); \ + _zzq_orig->r2 = __addr; \ + } + +#define VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + __SPECIAL_INSTRUCTION_PREAMBLE \ + /* branch-and-link-to-noredir *%R11 */ \ + "or 3,3,3\n\t" + +#endif /* PLAT_ppc64_linux */ + +/* ------------------------ ppc32-aix5 ------------------------- */ + +#if defined(PLAT_ppc32_aix5) + +typedef struct +{ + unsigned int nraddr; /* where's the code? */ + unsigned int r2; /* what tocptr do we need? */ +} +OrigFn; + +#define __SPECIAL_INSTRUCTION_PREAMBLE \ + "rlwinm 0,0,3,0,0 ; rlwinm 0,0,13,0,0\n\t" \ + "rlwinm 0,0,29,0,0 ; rlwinm 0,0,19,0,0\n\t" + +#define VALGRIND_DO_CLIENT_REQUEST( \ + _zzq_rlval, _zzq_default, _zzq_request, \ + _zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5) \ + \ + { unsigned int _zzq_args[7]; \ + register unsigned int _zzq_result; \ + register unsigned int* _zzq_ptr; \ + _zzq_args[0] = (unsigned int)(_zzq_request); \ + _zzq_args[1] = (unsigned int)(_zzq_arg1); \ + _zzq_args[2] = (unsigned int)(_zzq_arg2); \ + _zzq_args[3] = (unsigned int)(_zzq_arg3); \ + _zzq_args[4] = (unsigned int)(_zzq_arg4); \ + _zzq_args[5] = (unsigned int)(_zzq_arg5); \ + _zzq_args[6] = (unsigned int)(_zzq_default); \ + _zzq_ptr = _zzq_args; \ + __asm__ volatile("mr 4,%1\n\t" \ + "lwz 3, 24(4)\n\t" \ + __SPECIAL_INSTRUCTION_PREAMBLE \ + /* %R3 = client_request ( %R4 ) */ \ + "or 1,1,1\n\t" \ + "mr %0,3" \ + : "=b" (_zzq_result) \ + : "b" (_zzq_ptr) \ + : "r3", "r4", "cc", "memory"); \ + _zzq_rlval = _zzq_result; \ + } + +#define VALGRIND_GET_NR_CONTEXT(_zzq_rlval) \ + { volatile OrigFn* _zzq_orig = &(_zzq_rlval); \ + register unsigned int __addr; \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %R3 = guest_NRADDR */ \ + "or 2,2,2\n\t" \ + "mr %0,3" \ + : "=b" (__addr) \ + : \ + : "r3", "cc", "memory" \ + ); \ + _zzq_orig->nraddr = __addr; \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %R3 = guest_NRADDR_GPR2 */ \ + "or 4,4,4\n\t" \ + "mr %0,3" \ + : "=b" (__addr) \ + : \ + : "r3", "cc", "memory" \ + ); \ + _zzq_orig->r2 = __addr; \ + } + +#define VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + __SPECIAL_INSTRUCTION_PREAMBLE \ + /* branch-and-link-to-noredir *%R11 */ \ + "or 3,3,3\n\t" + +#endif /* PLAT_ppc32_aix5 */ + +/* ------------------------ ppc64-aix5 ------------------------- */ + +#if defined(PLAT_ppc64_aix5) + +typedef struct +{ + unsigned long long int nraddr; /* where's the code? */ + unsigned long long int r2; /* what tocptr do we need? */ +} +OrigFn; + +#define __SPECIAL_INSTRUCTION_PREAMBLE \ + "rotldi 0,0,3 ; rotldi 0,0,13\n\t" \ + "rotldi 0,0,61 ; rotldi 0,0,51\n\t" + +#define VALGRIND_DO_CLIENT_REQUEST( \ + _zzq_rlval, _zzq_default, _zzq_request, \ + _zzq_arg1, _zzq_arg2, _zzq_arg3, _zzq_arg4, _zzq_arg5) \ + \ + { unsigned long long int _zzq_args[7]; \ + register unsigned long long int _zzq_result; \ + register unsigned long long int* _zzq_ptr; \ + _zzq_args[0] = (unsigned int long long)(_zzq_request); \ + _zzq_args[1] = (unsigned int long long)(_zzq_arg1); \ + _zzq_args[2] = (unsigned int long long)(_zzq_arg2); \ + _zzq_args[3] = (unsigned int long long)(_zzq_arg3); \ + _zzq_args[4] = (unsigned int long long)(_zzq_arg4); \ + _zzq_args[5] = (unsigned int long long)(_zzq_arg5); \ + _zzq_args[6] = (unsigned int long long)(_zzq_default); \ + _zzq_ptr = _zzq_args; \ + __asm__ volatile("mr 4,%1\n\t" \ + "ld 3, 48(4)\n\t" \ + __SPECIAL_INSTRUCTION_PREAMBLE \ + /* %R3 = client_request ( %R4 ) */ \ + "or 1,1,1\n\t" \ + "mr %0,3" \ + : "=b" (_zzq_result) \ + : "b" (_zzq_ptr) \ + : "r3", "r4", "cc", "memory"); \ + _zzq_rlval = _zzq_result; \ + } + +#define VALGRIND_GET_NR_CONTEXT(_zzq_rlval) \ + { volatile OrigFn* _zzq_orig = &(_zzq_rlval); \ + register unsigned long long int __addr; \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %R3 = guest_NRADDR */ \ + "or 2,2,2\n\t" \ + "mr %0,3" \ + : "=b" (__addr) \ + : \ + : "r3", "cc", "memory" \ + ); \ + _zzq_orig->nraddr = __addr; \ + __asm__ volatile(__SPECIAL_INSTRUCTION_PREAMBLE \ + /* %R3 = guest_NRADDR_GPR2 */ \ + "or 4,4,4\n\t" \ + "mr %0,3" \ + : "=b" (__addr) \ + : \ + : "r3", "cc", "memory" \ + ); \ + _zzq_orig->r2 = __addr; \ + } + +#define VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + __SPECIAL_INSTRUCTION_PREAMBLE \ + /* branch-and-link-to-noredir *%R11 */ \ + "or 3,3,3\n\t" + +#endif /* PLAT_ppc64_aix5 */ + +/* Insert assembly code for other platforms here... */ + +#endif /* NVALGRIND */ + + +/* ------------------------------------------------------------------ */ +/* PLATFORM SPECIFICS for FUNCTION WRAPPING. This is all very */ +/* ugly. It's the least-worst tradeoff I can think of. */ +/* ------------------------------------------------------------------ */ + +/* This section defines magic (a.k.a appalling-hack) macros for doing + guaranteed-no-redirection macros, so as to get from function + wrappers to the functions they are wrapping. The whole point is to + construct standard call sequences, but to do the call itself with a + special no-redirect call pseudo-instruction that the JIT + understands and handles specially. This section is long and + repetitious, and I can't see a way to make it shorter. + + The naming scheme is as follows: + + CALL_FN_{W,v}_{v,W,WW,WWW,WWWW,5W,6W,7W,etc} + + 'W' stands for "word" and 'v' for "void". Hence there are + different macros for calling arity 0, 1, 2, 3, 4, etc, functions, + and for each, the possibility of returning a word-typed result, or + no result. +*/ + +/* Use these to write the name of your wrapper. NOTE: duplicates + VG_WRAP_FUNCTION_Z{U,Z} in pub_tool_redir.h. */ + +/* Use an extra level of macroisation so as to ensure the soname/fnname + args are fully macro-expanded before pasting them together. */ +#define VG_CONCAT4(_aa,_bb,_cc,_dd) _aa##_bb##_cc##_dd + +#define I_WRAP_SONAME_FNNAME_ZU(soname,fnname) \ + VG_CONCAT4(_vgwZU_,soname,_,fnname) + +#define I_WRAP_SONAME_FNNAME_ZZ(soname,fnname) \ + VG_CONCAT4(_vgwZZ_,soname,_,fnname) + +/* Use this macro from within a wrapper function to collect the + context (address and possibly other info) of the original function. + Once you have that you can then use it in one of the CALL_FN_ + macros. The type of the argument _lval is OrigFn. */ +#define VALGRIND_GET_ORIG_FN(_lval) VALGRIND_GET_NR_CONTEXT(_lval) + +/* Derivatives of the main macros below, for calling functions + returning void. */ + +#define CALL_FN_v_v(fnptr) \ + do { volatile unsigned long _junk; \ + CALL_FN_W_v(_junk,fnptr); } while (0) + +#define CALL_FN_v_W(fnptr, arg1) \ + do { volatile unsigned long _junk; \ + CALL_FN_W_W(_junk,fnptr,arg1); } while (0) + +#define CALL_FN_v_WW(fnptr, arg1,arg2) \ + do { volatile unsigned long _junk; \ + CALL_FN_W_WW(_junk,fnptr,arg1,arg2); } while (0) + +#define CALL_FN_v_WWW(fnptr, arg1,arg2,arg3) \ + do { volatile unsigned long _junk; \ + CALL_FN_W_WWW(_junk,fnptr,arg1,arg2,arg3); } while (0) + +#define CALL_FN_v_WWWW(fnptr, arg1,arg2,arg3,arg4) \ + do { volatile unsigned long _junk; \ + CALL_FN_W_WWWW(_junk,fnptr,arg1,arg2,arg3,arg4); } while (0) + +#define CALL_FN_v_5W(fnptr, arg1,arg2,arg3,arg4,arg5) \ + do { volatile unsigned long _junk; \ + CALL_FN_W_5W(_junk,fnptr,arg1,arg2,arg3,arg4,arg5); } while (0) + +#define CALL_FN_v_6W(fnptr, arg1,arg2,arg3,arg4,arg5,arg6) \ + do { volatile unsigned long _junk; \ + CALL_FN_W_6W(_junk,fnptr,arg1,arg2,arg3,arg4,arg5,arg6); } while (0) + +#define CALL_FN_v_7W(fnptr, arg1,arg2,arg3,arg4,arg5,arg6,arg7) \ + do { volatile unsigned long _junk; \ + CALL_FN_W_7W(_junk,fnptr,arg1,arg2,arg3,arg4,arg5,arg6,arg7); } while (0) + +/* ------------------------- x86-{linux,darwin} ---------------- */ + +#if defined(PLAT_x86_linux) || defined(PLAT_x86_darwin) + +/* These regs are trashed by the hidden call. No need to mention eax + as gcc can already see that, plus causes gcc to bomb. */ +#define __CALLER_SAVED_REGS /*"eax"*/ "ecx", "edx" + +/* These CALL_FN_ macros assume that on x86-linux, sizeof(unsigned + long) == 4. */ + +#define CALL_FN_W_v(lval, orig) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[1]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + __asm__ volatile( \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_W(lval, orig, arg1) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[2]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + __asm__ volatile( \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $4, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WW(lval, orig, arg1,arg2) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + __asm__ volatile( \ + "pushl 8(%%eax)\n\t" \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $8, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWW(lval, orig, arg1,arg2,arg3) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[4]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + __asm__ volatile( \ + "pushl 12(%%eax)\n\t" \ + "pushl 8(%%eax)\n\t" \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $12, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWWW(lval, orig, arg1,arg2,arg3,arg4) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[5]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + __asm__ volatile( \ + "pushl 16(%%eax)\n\t" \ + "pushl 12(%%eax)\n\t" \ + "pushl 8(%%eax)\n\t" \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $16, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_5W(lval, orig, arg1,arg2,arg3,arg4,arg5) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[6]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + __asm__ volatile( \ + "pushl 20(%%eax)\n\t" \ + "pushl 16(%%eax)\n\t" \ + "pushl 12(%%eax)\n\t" \ + "pushl 8(%%eax)\n\t" \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $20, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_6W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[7]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + __asm__ volatile( \ + "pushl 24(%%eax)\n\t" \ + "pushl 20(%%eax)\n\t" \ + "pushl 16(%%eax)\n\t" \ + "pushl 12(%%eax)\n\t" \ + "pushl 8(%%eax)\n\t" \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $24, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_7W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[8]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + __asm__ volatile( \ + "pushl 28(%%eax)\n\t" \ + "pushl 24(%%eax)\n\t" \ + "pushl 20(%%eax)\n\t" \ + "pushl 16(%%eax)\n\t" \ + "pushl 12(%%eax)\n\t" \ + "pushl 8(%%eax)\n\t" \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $28, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_8W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[9]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + _argvec[8] = (unsigned long)(arg8); \ + __asm__ volatile( \ + "pushl 32(%%eax)\n\t" \ + "pushl 28(%%eax)\n\t" \ + "pushl 24(%%eax)\n\t" \ + "pushl 20(%%eax)\n\t" \ + "pushl 16(%%eax)\n\t" \ + "pushl 12(%%eax)\n\t" \ + "pushl 8(%%eax)\n\t" \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $32, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_9W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[10]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + _argvec[8] = (unsigned long)(arg8); \ + _argvec[9] = (unsigned long)(arg9); \ + __asm__ volatile( \ + "pushl 36(%%eax)\n\t" \ + "pushl 32(%%eax)\n\t" \ + "pushl 28(%%eax)\n\t" \ + "pushl 24(%%eax)\n\t" \ + "pushl 20(%%eax)\n\t" \ + "pushl 16(%%eax)\n\t" \ + "pushl 12(%%eax)\n\t" \ + "pushl 8(%%eax)\n\t" \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $36, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_10W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[11]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + _argvec[8] = (unsigned long)(arg8); \ + _argvec[9] = (unsigned long)(arg9); \ + _argvec[10] = (unsigned long)(arg10); \ + __asm__ volatile( \ + "pushl 40(%%eax)\n\t" \ + "pushl 36(%%eax)\n\t" \ + "pushl 32(%%eax)\n\t" \ + "pushl 28(%%eax)\n\t" \ + "pushl 24(%%eax)\n\t" \ + "pushl 20(%%eax)\n\t" \ + "pushl 16(%%eax)\n\t" \ + "pushl 12(%%eax)\n\t" \ + "pushl 8(%%eax)\n\t" \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $40, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_11W(lval, orig, arg1,arg2,arg3,arg4,arg5, \ + arg6,arg7,arg8,arg9,arg10, \ + arg11) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[12]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + _argvec[8] = (unsigned long)(arg8); \ + _argvec[9] = (unsigned long)(arg9); \ + _argvec[10] = (unsigned long)(arg10); \ + _argvec[11] = (unsigned long)(arg11); \ + __asm__ volatile( \ + "pushl 44(%%eax)\n\t" \ + "pushl 40(%%eax)\n\t" \ + "pushl 36(%%eax)\n\t" \ + "pushl 32(%%eax)\n\t" \ + "pushl 28(%%eax)\n\t" \ + "pushl 24(%%eax)\n\t" \ + "pushl 20(%%eax)\n\t" \ + "pushl 16(%%eax)\n\t" \ + "pushl 12(%%eax)\n\t" \ + "pushl 8(%%eax)\n\t" \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $44, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_12W(lval, orig, arg1,arg2,arg3,arg4,arg5, \ + arg6,arg7,arg8,arg9,arg10, \ + arg11,arg12) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[13]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + _argvec[8] = (unsigned long)(arg8); \ + _argvec[9] = (unsigned long)(arg9); \ + _argvec[10] = (unsigned long)(arg10); \ + _argvec[11] = (unsigned long)(arg11); \ + _argvec[12] = (unsigned long)(arg12); \ + __asm__ volatile( \ + "pushl 48(%%eax)\n\t" \ + "pushl 44(%%eax)\n\t" \ + "pushl 40(%%eax)\n\t" \ + "pushl 36(%%eax)\n\t" \ + "pushl 32(%%eax)\n\t" \ + "pushl 28(%%eax)\n\t" \ + "pushl 24(%%eax)\n\t" \ + "pushl 20(%%eax)\n\t" \ + "pushl 16(%%eax)\n\t" \ + "pushl 12(%%eax)\n\t" \ + "pushl 8(%%eax)\n\t" \ + "pushl 4(%%eax)\n\t" \ + "movl (%%eax), %%eax\n\t" /* target->%eax */ \ + VALGRIND_CALL_NOREDIR_EAX \ + "addl $48, %%esp\n" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#endif /* PLAT_x86_linux || PLAT_x86_darwin */ + +/* ------------------------ amd64-{linux,darwin} --------------- */ + +#if defined(PLAT_amd64_linux) || defined(PLAT_amd64_darwin) + +/* ARGREGS: rdi rsi rdx rcx r8 r9 (the rest on stack in R-to-L order) */ + +/* These regs are trashed by the hidden call. */ +#define __CALLER_SAVED_REGS /*"rax",*/ "rcx", "rdx", "rsi", \ + "rdi", "r8", "r9", "r10", "r11" + +/* These CALL_FN_ macros assume that on amd64-linux, sizeof(unsigned + long) == 8. */ + +/* NB 9 Sept 07. There is a nasty kludge here in all these CALL_FN_ + macros. In order not to trash the stack redzone, we need to drop + %rsp by 128 before the hidden call, and restore afterwards. The + nastyness is that it is only by luck that the stack still appears + to be unwindable during the hidden call - since then the behaviour + of any routine using this macro does not match what the CFI data + says. Sigh. + + Why is this important? Imagine that a wrapper has a stack + allocated local, and passes to the hidden call, a pointer to it. + Because gcc does not know about the hidden call, it may allocate + that local in the redzone. Unfortunately the hidden call may then + trash it before it comes to use it. So we must step clear of the + redzone, for the duration of the hidden call, to make it safe. + + Probably the same problem afflicts the other redzone-style ABIs too + (ppc64-linux, ppc32-aix5, ppc64-aix5); but for those, the stack is + self describing (none of this CFI nonsense) so at least messing + with the stack pointer doesn't give a danger of non-unwindable + stack. */ + +#define CALL_FN_W_v(lval, orig) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[1]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_W(lval, orig, arg1) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[2]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WW(lval, orig, arg1,arg2) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "movq 16(%%rax), %%rsi\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWW(lval, orig, arg1,arg2,arg3) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[4]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "movq 24(%%rax), %%rdx\n\t" \ + "movq 16(%%rax), %%rsi\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWWW(lval, orig, arg1,arg2,arg3,arg4) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[5]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "movq 32(%%rax), %%rcx\n\t" \ + "movq 24(%%rax), %%rdx\n\t" \ + "movq 16(%%rax), %%rsi\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_5W(lval, orig, arg1,arg2,arg3,arg4,arg5) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[6]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "movq 40(%%rax), %%r8\n\t" \ + "movq 32(%%rax), %%rcx\n\t" \ + "movq 24(%%rax), %%rdx\n\t" \ + "movq 16(%%rax), %%rsi\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_6W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[7]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "movq 48(%%rax), %%r9\n\t" \ + "movq 40(%%rax), %%r8\n\t" \ + "movq 32(%%rax), %%rcx\n\t" \ + "movq 24(%%rax), %%rdx\n\t" \ + "movq 16(%%rax), %%rsi\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + "addq $128,%%rsp\n\t" \ + VALGRIND_CALL_NOREDIR_RAX \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_7W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[8]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "pushq 56(%%rax)\n\t" \ + "movq 48(%%rax), %%r9\n\t" \ + "movq 40(%%rax), %%r8\n\t" \ + "movq 32(%%rax), %%rcx\n\t" \ + "movq 24(%%rax), %%rdx\n\t" \ + "movq 16(%%rax), %%rsi\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $8, %%rsp\n" \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_8W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[9]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + _argvec[8] = (unsigned long)(arg8); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "pushq 64(%%rax)\n\t" \ + "pushq 56(%%rax)\n\t" \ + "movq 48(%%rax), %%r9\n\t" \ + "movq 40(%%rax), %%r8\n\t" \ + "movq 32(%%rax), %%rcx\n\t" \ + "movq 24(%%rax), %%rdx\n\t" \ + "movq 16(%%rax), %%rsi\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $16, %%rsp\n" \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_9W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[10]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + _argvec[8] = (unsigned long)(arg8); \ + _argvec[9] = (unsigned long)(arg9); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "pushq 72(%%rax)\n\t" \ + "pushq 64(%%rax)\n\t" \ + "pushq 56(%%rax)\n\t" \ + "movq 48(%%rax), %%r9\n\t" \ + "movq 40(%%rax), %%r8\n\t" \ + "movq 32(%%rax), %%rcx\n\t" \ + "movq 24(%%rax), %%rdx\n\t" \ + "movq 16(%%rax), %%rsi\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $24, %%rsp\n" \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_10W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[11]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + _argvec[8] = (unsigned long)(arg8); \ + _argvec[9] = (unsigned long)(arg9); \ + _argvec[10] = (unsigned long)(arg10); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "pushq 80(%%rax)\n\t" \ + "pushq 72(%%rax)\n\t" \ + "pushq 64(%%rax)\n\t" \ + "pushq 56(%%rax)\n\t" \ + "movq 48(%%rax), %%r9\n\t" \ + "movq 40(%%rax), %%r8\n\t" \ + "movq 32(%%rax), %%rcx\n\t" \ + "movq 24(%%rax), %%rdx\n\t" \ + "movq 16(%%rax), %%rsi\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $32, %%rsp\n" \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_11W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10,arg11) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[12]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + _argvec[8] = (unsigned long)(arg8); \ + _argvec[9] = (unsigned long)(arg9); \ + _argvec[10] = (unsigned long)(arg10); \ + _argvec[11] = (unsigned long)(arg11); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "pushq 88(%%rax)\n\t" \ + "pushq 80(%%rax)\n\t" \ + "pushq 72(%%rax)\n\t" \ + "pushq 64(%%rax)\n\t" \ + "pushq 56(%%rax)\n\t" \ + "movq 48(%%rax), %%r9\n\t" \ + "movq 40(%%rax), %%r8\n\t" \ + "movq 32(%%rax), %%rcx\n\t" \ + "movq 24(%%rax), %%rdx\n\t" \ + "movq 16(%%rax), %%rsi\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $40, %%rsp\n" \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_12W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10,arg11,arg12) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[13]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)(arg1); \ + _argvec[2] = (unsigned long)(arg2); \ + _argvec[3] = (unsigned long)(arg3); \ + _argvec[4] = (unsigned long)(arg4); \ + _argvec[5] = (unsigned long)(arg5); \ + _argvec[6] = (unsigned long)(arg6); \ + _argvec[7] = (unsigned long)(arg7); \ + _argvec[8] = (unsigned long)(arg8); \ + _argvec[9] = (unsigned long)(arg9); \ + _argvec[10] = (unsigned long)(arg10); \ + _argvec[11] = (unsigned long)(arg11); \ + _argvec[12] = (unsigned long)(arg12); \ + __asm__ volatile( \ + "subq $128,%%rsp\n\t" \ + "pushq 96(%%rax)\n\t" \ + "pushq 88(%%rax)\n\t" \ + "pushq 80(%%rax)\n\t" \ + "pushq 72(%%rax)\n\t" \ + "pushq 64(%%rax)\n\t" \ + "pushq 56(%%rax)\n\t" \ + "movq 48(%%rax), %%r9\n\t" \ + "movq 40(%%rax), %%r8\n\t" \ + "movq 32(%%rax), %%rcx\n\t" \ + "movq 24(%%rax), %%rdx\n\t" \ + "movq 16(%%rax), %%rsi\n\t" \ + "movq 8(%%rax), %%rdi\n\t" \ + "movq (%%rax), %%rax\n\t" /* target->%rax */ \ + VALGRIND_CALL_NOREDIR_RAX \ + "addq $48, %%rsp\n" \ + "addq $128,%%rsp\n\t" \ + : /*out*/ "=a" (_res) \ + : /*in*/ "a" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#endif /* PLAT_amd64_linux || PLAT_amd64_darwin */ + +/* ------------------------ ppc32-linux ------------------------ */ + +#if defined(PLAT_ppc32_linux) + +/* This is useful for finding out about the on-stack stuff: + + extern int f9 ( int,int,int,int,int,int,int,int,int ); + extern int f10 ( int,int,int,int,int,int,int,int,int,int ); + extern int f11 ( int,int,int,int,int,int,int,int,int,int,int ); + extern int f12 ( int,int,int,int,int,int,int,int,int,int,int,int ); + + int g9 ( void ) { + return f9(11,22,33,44,55,66,77,88,99); + } + int g10 ( void ) { + return f10(11,22,33,44,55,66,77,88,99,110); + } + int g11 ( void ) { + return f11(11,22,33,44,55,66,77,88,99,110,121); + } + int g12 ( void ) { + return f12(11,22,33,44,55,66,77,88,99,110,121,132); + } +*/ + +/* ARGREGS: r3 r4 r5 r6 r7 r8 r9 r10 (the rest on stack somewhere) */ + +/* These regs are trashed by the hidden call. */ +#define __CALLER_SAVED_REGS \ + "lr", "ctr", "xer", \ + "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", \ + "r0", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", \ + "r11", "r12", "r13" + +/* These CALL_FN_ macros assume that on ppc32-linux, + sizeof(unsigned long) == 4. */ + +#define CALL_FN_W_v(lval, orig) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[1]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_W(lval, orig, arg1) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[2]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WW(lval, orig, arg1,arg2) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + _argvec[2] = (unsigned long)arg2; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 4,8(11)\n\t" \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWW(lval, orig, arg1,arg2,arg3) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[4]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + _argvec[2] = (unsigned long)arg2; \ + _argvec[3] = (unsigned long)arg3; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 4,8(11)\n\t" \ + "lwz 5,12(11)\n\t" \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWWW(lval, orig, arg1,arg2,arg3,arg4) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[5]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + _argvec[2] = (unsigned long)arg2; \ + _argvec[3] = (unsigned long)arg3; \ + _argvec[4] = (unsigned long)arg4; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 4,8(11)\n\t" \ + "lwz 5,12(11)\n\t" \ + "lwz 6,16(11)\n\t" /* arg4->r6 */ \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_5W(lval, orig, arg1,arg2,arg3,arg4,arg5) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[6]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + _argvec[2] = (unsigned long)arg2; \ + _argvec[3] = (unsigned long)arg3; \ + _argvec[4] = (unsigned long)arg4; \ + _argvec[5] = (unsigned long)arg5; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 4,8(11)\n\t" \ + "lwz 5,12(11)\n\t" \ + "lwz 6,16(11)\n\t" /* arg4->r6 */ \ + "lwz 7,20(11)\n\t" \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_6W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[7]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + _argvec[2] = (unsigned long)arg2; \ + _argvec[3] = (unsigned long)arg3; \ + _argvec[4] = (unsigned long)arg4; \ + _argvec[5] = (unsigned long)arg5; \ + _argvec[6] = (unsigned long)arg6; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 4,8(11)\n\t" \ + "lwz 5,12(11)\n\t" \ + "lwz 6,16(11)\n\t" /* arg4->r6 */ \ + "lwz 7,20(11)\n\t" \ + "lwz 8,24(11)\n\t" \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_7W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[8]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + _argvec[2] = (unsigned long)arg2; \ + _argvec[3] = (unsigned long)arg3; \ + _argvec[4] = (unsigned long)arg4; \ + _argvec[5] = (unsigned long)arg5; \ + _argvec[6] = (unsigned long)arg6; \ + _argvec[7] = (unsigned long)arg7; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 4,8(11)\n\t" \ + "lwz 5,12(11)\n\t" \ + "lwz 6,16(11)\n\t" /* arg4->r6 */ \ + "lwz 7,20(11)\n\t" \ + "lwz 8,24(11)\n\t" \ + "lwz 9,28(11)\n\t" \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_8W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[9]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + _argvec[2] = (unsigned long)arg2; \ + _argvec[3] = (unsigned long)arg3; \ + _argvec[4] = (unsigned long)arg4; \ + _argvec[5] = (unsigned long)arg5; \ + _argvec[6] = (unsigned long)arg6; \ + _argvec[7] = (unsigned long)arg7; \ + _argvec[8] = (unsigned long)arg8; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 4,8(11)\n\t" \ + "lwz 5,12(11)\n\t" \ + "lwz 6,16(11)\n\t" /* arg4->r6 */ \ + "lwz 7,20(11)\n\t" \ + "lwz 8,24(11)\n\t" \ + "lwz 9,28(11)\n\t" \ + "lwz 10,32(11)\n\t" /* arg8->r10 */ \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_9W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[10]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + _argvec[2] = (unsigned long)arg2; \ + _argvec[3] = (unsigned long)arg3; \ + _argvec[4] = (unsigned long)arg4; \ + _argvec[5] = (unsigned long)arg5; \ + _argvec[6] = (unsigned long)arg6; \ + _argvec[7] = (unsigned long)arg7; \ + _argvec[8] = (unsigned long)arg8; \ + _argvec[9] = (unsigned long)arg9; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "addi 1,1,-16\n\t" \ + /* arg9 */ \ + "lwz 3,36(11)\n\t" \ + "stw 3,8(1)\n\t" \ + /* args1-8 */ \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 4,8(11)\n\t" \ + "lwz 5,12(11)\n\t" \ + "lwz 6,16(11)\n\t" /* arg4->r6 */ \ + "lwz 7,20(11)\n\t" \ + "lwz 8,24(11)\n\t" \ + "lwz 9,28(11)\n\t" \ + "lwz 10,32(11)\n\t" /* arg8->r10 */ \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "addi 1,1,16\n\t" \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_10W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[11]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + _argvec[2] = (unsigned long)arg2; \ + _argvec[3] = (unsigned long)arg3; \ + _argvec[4] = (unsigned long)arg4; \ + _argvec[5] = (unsigned long)arg5; \ + _argvec[6] = (unsigned long)arg6; \ + _argvec[7] = (unsigned long)arg7; \ + _argvec[8] = (unsigned long)arg8; \ + _argvec[9] = (unsigned long)arg9; \ + _argvec[10] = (unsigned long)arg10; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "addi 1,1,-16\n\t" \ + /* arg10 */ \ + "lwz 3,40(11)\n\t" \ + "stw 3,12(1)\n\t" \ + /* arg9 */ \ + "lwz 3,36(11)\n\t" \ + "stw 3,8(1)\n\t" \ + /* args1-8 */ \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 4,8(11)\n\t" \ + "lwz 5,12(11)\n\t" \ + "lwz 6,16(11)\n\t" /* arg4->r6 */ \ + "lwz 7,20(11)\n\t" \ + "lwz 8,24(11)\n\t" \ + "lwz 9,28(11)\n\t" \ + "lwz 10,32(11)\n\t" /* arg8->r10 */ \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "addi 1,1,16\n\t" \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_11W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10,arg11) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[12]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + _argvec[2] = (unsigned long)arg2; \ + _argvec[3] = (unsigned long)arg3; \ + _argvec[4] = (unsigned long)arg4; \ + _argvec[5] = (unsigned long)arg5; \ + _argvec[6] = (unsigned long)arg6; \ + _argvec[7] = (unsigned long)arg7; \ + _argvec[8] = (unsigned long)arg8; \ + _argvec[9] = (unsigned long)arg9; \ + _argvec[10] = (unsigned long)arg10; \ + _argvec[11] = (unsigned long)arg11; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "addi 1,1,-32\n\t" \ + /* arg11 */ \ + "lwz 3,44(11)\n\t" \ + "stw 3,16(1)\n\t" \ + /* arg10 */ \ + "lwz 3,40(11)\n\t" \ + "stw 3,12(1)\n\t" \ + /* arg9 */ \ + "lwz 3,36(11)\n\t" \ + "stw 3,8(1)\n\t" \ + /* args1-8 */ \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 4,8(11)\n\t" \ + "lwz 5,12(11)\n\t" \ + "lwz 6,16(11)\n\t" /* arg4->r6 */ \ + "lwz 7,20(11)\n\t" \ + "lwz 8,24(11)\n\t" \ + "lwz 9,28(11)\n\t" \ + "lwz 10,32(11)\n\t" /* arg8->r10 */ \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "addi 1,1,32\n\t" \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_12W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10,arg11,arg12) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[13]; \ + volatile unsigned long _res; \ + _argvec[0] = (unsigned long)_orig.nraddr; \ + _argvec[1] = (unsigned long)arg1; \ + _argvec[2] = (unsigned long)arg2; \ + _argvec[3] = (unsigned long)arg3; \ + _argvec[4] = (unsigned long)arg4; \ + _argvec[5] = (unsigned long)arg5; \ + _argvec[6] = (unsigned long)arg6; \ + _argvec[7] = (unsigned long)arg7; \ + _argvec[8] = (unsigned long)arg8; \ + _argvec[9] = (unsigned long)arg9; \ + _argvec[10] = (unsigned long)arg10; \ + _argvec[11] = (unsigned long)arg11; \ + _argvec[12] = (unsigned long)arg12; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "addi 1,1,-32\n\t" \ + /* arg12 */ \ + "lwz 3,48(11)\n\t" \ + "stw 3,20(1)\n\t" \ + /* arg11 */ \ + "lwz 3,44(11)\n\t" \ + "stw 3,16(1)\n\t" \ + /* arg10 */ \ + "lwz 3,40(11)\n\t" \ + "stw 3,12(1)\n\t" \ + /* arg9 */ \ + "lwz 3,36(11)\n\t" \ + "stw 3,8(1)\n\t" \ + /* args1-8 */ \ + "lwz 3,4(11)\n\t" /* arg1->r3 */ \ + "lwz 4,8(11)\n\t" \ + "lwz 5,12(11)\n\t" \ + "lwz 6,16(11)\n\t" /* arg4->r6 */ \ + "lwz 7,20(11)\n\t" \ + "lwz 8,24(11)\n\t" \ + "lwz 9,28(11)\n\t" \ + "lwz 10,32(11)\n\t" /* arg8->r10 */ \ + "lwz 11,0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "addi 1,1,32\n\t" \ + "mr %0,3" \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[0]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#endif /* PLAT_ppc32_linux */ + +/* ------------------------ ppc64-linux ------------------------ */ + +#if defined(PLAT_ppc64_linux) + +/* ARGREGS: r3 r4 r5 r6 r7 r8 r9 r10 (the rest on stack somewhere) */ + +/* These regs are trashed by the hidden call. */ +#define __CALLER_SAVED_REGS \ + "lr", "ctr", "xer", \ + "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", \ + "r0", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", \ + "r11", "r12", "r13" + +/* These CALL_FN_ macros assume that on ppc64-linux, sizeof(unsigned + long) == 8. */ + +#define CALL_FN_W_v(lval, orig) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+0]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)" /* restore tocptr */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_W(lval, orig, arg1) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+1]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)" /* restore tocptr */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WW(lval, orig, arg1,arg2) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+2]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)" /* restore tocptr */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWW(lval, orig, arg1,arg2,arg3) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+3]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)" /* restore tocptr */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWWW(lval, orig, arg1,arg2,arg3,arg4) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+4]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)" /* restore tocptr */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_5W(lval, orig, arg1,arg2,arg3,arg4,arg5) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+5]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)" /* restore tocptr */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_6W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+6]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)" /* restore tocptr */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_7W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+7]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)" /* restore tocptr */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_8W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+8]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 10, 64(11)\n\t" /* arg8->r10 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)" /* restore tocptr */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_9W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+9]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "addi 1,1,-128\n\t" /* expand stack frame */ \ + /* arg9 */ \ + "ld 3,72(11)\n\t" \ + "std 3,112(1)\n\t" \ + /* args1-8 */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 10, 64(11)\n\t" /* arg8->r10 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + "addi 1,1,128" /* restore frame */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_10W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+10]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + _argvec[2+10] = (unsigned long)arg10; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "addi 1,1,-128\n\t" /* expand stack frame */ \ + /* arg10 */ \ + "ld 3,80(11)\n\t" \ + "std 3,120(1)\n\t" \ + /* arg9 */ \ + "ld 3,72(11)\n\t" \ + "std 3,112(1)\n\t" \ + /* args1-8 */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 10, 64(11)\n\t" /* arg8->r10 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + "addi 1,1,128" /* restore frame */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_11W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10,arg11) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+11]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + _argvec[2+10] = (unsigned long)arg10; \ + _argvec[2+11] = (unsigned long)arg11; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "addi 1,1,-144\n\t" /* expand stack frame */ \ + /* arg11 */ \ + "ld 3,88(11)\n\t" \ + "std 3,128(1)\n\t" \ + /* arg10 */ \ + "ld 3,80(11)\n\t" \ + "std 3,120(1)\n\t" \ + /* arg9 */ \ + "ld 3,72(11)\n\t" \ + "std 3,112(1)\n\t" \ + /* args1-8 */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 10, 64(11)\n\t" /* arg8->r10 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + "addi 1,1,144" /* restore frame */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_12W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10,arg11,arg12) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+12]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + _argvec[2+10] = (unsigned long)arg10; \ + _argvec[2+11] = (unsigned long)arg11; \ + _argvec[2+12] = (unsigned long)arg12; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "addi 1,1,-144\n\t" /* expand stack frame */ \ + /* arg12 */ \ + "ld 3,96(11)\n\t" \ + "std 3,136(1)\n\t" \ + /* arg11 */ \ + "ld 3,88(11)\n\t" \ + "std 3,128(1)\n\t" \ + /* arg10 */ \ + "ld 3,80(11)\n\t" \ + "std 3,120(1)\n\t" \ + /* arg9 */ \ + "ld 3,72(11)\n\t" \ + "std 3,112(1)\n\t" \ + /* args1-8 */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 10, 64(11)\n\t" /* arg8->r10 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + "addi 1,1,144" /* restore frame */ \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#endif /* PLAT_ppc64_linux */ + +/* ------------------------ ppc32-aix5 ------------------------- */ + +#if defined(PLAT_ppc32_aix5) + +/* ARGREGS: r3 r4 r5 r6 r7 r8 r9 r10 (the rest on stack somewhere) */ + +/* These regs are trashed by the hidden call. */ +#define __CALLER_SAVED_REGS \ + "lr", "ctr", "xer", \ + "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", \ + "r0", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", \ + "r11", "r12", "r13" + +/* Expand the stack frame, copying enough info that unwinding + still works. Trashes r3. */ + +#define VG_EXPAND_FRAME_BY_trashes_r3(_n_fr) \ + "addi 1,1,-" #_n_fr "\n\t" \ + "lwz 3," #_n_fr "(1)\n\t" \ + "stw 3,0(1)\n\t" + +#define VG_CONTRACT_FRAME_BY(_n_fr) \ + "addi 1,1," #_n_fr "\n\t" + +/* These CALL_FN_ macros assume that on ppc32-aix5, sizeof(unsigned + long) == 4. */ + +#define CALL_FN_W_v(lval, orig) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+0]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_W(lval, orig, arg1) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+1]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WW(lval, orig, arg1,arg2) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+2]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 4, 8(11)\n\t" /* arg2->r4 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWW(lval, orig, arg1,arg2,arg3) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+3]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 4, 8(11)\n\t" /* arg2->r4 */ \ + "lwz 5, 12(11)\n\t" /* arg3->r5 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWWW(lval, orig, arg1,arg2,arg3,arg4) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+4]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 4, 8(11)\n\t" /* arg2->r4 */ \ + "lwz 5, 12(11)\n\t" /* arg3->r5 */ \ + "lwz 6, 16(11)\n\t" /* arg4->r6 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_5W(lval, orig, arg1,arg2,arg3,arg4,arg5) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+5]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 4, 8(11)\n\t" /* arg2->r4 */ \ + "lwz 5, 12(11)\n\t" /* arg3->r5 */ \ + "lwz 6, 16(11)\n\t" /* arg4->r6 */ \ + "lwz 7, 20(11)\n\t" /* arg5->r7 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_6W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+6]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 4, 8(11)\n\t" /* arg2->r4 */ \ + "lwz 5, 12(11)\n\t" /* arg3->r5 */ \ + "lwz 6, 16(11)\n\t" /* arg4->r6 */ \ + "lwz 7, 20(11)\n\t" /* arg5->r7 */ \ + "lwz 8, 24(11)\n\t" /* arg6->r8 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_7W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+7]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 4, 8(11)\n\t" /* arg2->r4 */ \ + "lwz 5, 12(11)\n\t" /* arg3->r5 */ \ + "lwz 6, 16(11)\n\t" /* arg4->r6 */ \ + "lwz 7, 20(11)\n\t" /* arg5->r7 */ \ + "lwz 8, 24(11)\n\t" /* arg6->r8 */ \ + "lwz 9, 28(11)\n\t" /* arg7->r9 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_8W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+8]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 4, 8(11)\n\t" /* arg2->r4 */ \ + "lwz 5, 12(11)\n\t" /* arg3->r5 */ \ + "lwz 6, 16(11)\n\t" /* arg4->r6 */ \ + "lwz 7, 20(11)\n\t" /* arg5->r7 */ \ + "lwz 8, 24(11)\n\t" /* arg6->r8 */ \ + "lwz 9, 28(11)\n\t" /* arg7->r9 */ \ + "lwz 10, 32(11)\n\t" /* arg8->r10 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_9W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+9]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + VG_EXPAND_FRAME_BY_trashes_r3(64) \ + /* arg9 */ \ + "lwz 3,36(11)\n\t" \ + "stw 3,56(1)\n\t" \ + /* args1-8 */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 4, 8(11)\n\t" /* arg2->r4 */ \ + "lwz 5, 12(11)\n\t" /* arg3->r5 */ \ + "lwz 6, 16(11)\n\t" /* arg4->r6 */ \ + "lwz 7, 20(11)\n\t" /* arg5->r7 */ \ + "lwz 8, 24(11)\n\t" /* arg6->r8 */ \ + "lwz 9, 28(11)\n\t" /* arg7->r9 */ \ + "lwz 10, 32(11)\n\t" /* arg8->r10 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(64) \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_10W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+10]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + _argvec[2+10] = (unsigned long)arg10; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + VG_EXPAND_FRAME_BY_trashes_r3(64) \ + /* arg10 */ \ + "lwz 3,40(11)\n\t" \ + "stw 3,60(1)\n\t" \ + /* arg9 */ \ + "lwz 3,36(11)\n\t" \ + "stw 3,56(1)\n\t" \ + /* args1-8 */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 4, 8(11)\n\t" /* arg2->r4 */ \ + "lwz 5, 12(11)\n\t" /* arg3->r5 */ \ + "lwz 6, 16(11)\n\t" /* arg4->r6 */ \ + "lwz 7, 20(11)\n\t" /* arg5->r7 */ \ + "lwz 8, 24(11)\n\t" /* arg6->r8 */ \ + "lwz 9, 28(11)\n\t" /* arg7->r9 */ \ + "lwz 10, 32(11)\n\t" /* arg8->r10 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(64) \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_11W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10,arg11) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+11]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + _argvec[2+10] = (unsigned long)arg10; \ + _argvec[2+11] = (unsigned long)arg11; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + VG_EXPAND_FRAME_BY_trashes_r3(72) \ + /* arg11 */ \ + "lwz 3,44(11)\n\t" \ + "stw 3,64(1)\n\t" \ + /* arg10 */ \ + "lwz 3,40(11)\n\t" \ + "stw 3,60(1)\n\t" \ + /* arg9 */ \ + "lwz 3,36(11)\n\t" \ + "stw 3,56(1)\n\t" \ + /* args1-8 */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 4, 8(11)\n\t" /* arg2->r4 */ \ + "lwz 5, 12(11)\n\t" /* arg3->r5 */ \ + "lwz 6, 16(11)\n\t" /* arg4->r6 */ \ + "lwz 7, 20(11)\n\t" /* arg5->r7 */ \ + "lwz 8, 24(11)\n\t" /* arg6->r8 */ \ + "lwz 9, 28(11)\n\t" /* arg7->r9 */ \ + "lwz 10, 32(11)\n\t" /* arg8->r10 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(72) \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_12W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10,arg11,arg12) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+12]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + _argvec[2+10] = (unsigned long)arg10; \ + _argvec[2+11] = (unsigned long)arg11; \ + _argvec[2+12] = (unsigned long)arg12; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "stw 2,-8(11)\n\t" /* save tocptr */ \ + "lwz 2,-4(11)\n\t" /* use nraddr's tocptr */ \ + VG_EXPAND_FRAME_BY_trashes_r3(72) \ + /* arg12 */ \ + "lwz 3,48(11)\n\t" \ + "stw 3,68(1)\n\t" \ + /* arg11 */ \ + "lwz 3,44(11)\n\t" \ + "stw 3,64(1)\n\t" \ + /* arg10 */ \ + "lwz 3,40(11)\n\t" \ + "stw 3,60(1)\n\t" \ + /* arg9 */ \ + "lwz 3,36(11)\n\t" \ + "stw 3,56(1)\n\t" \ + /* args1-8 */ \ + "lwz 3, 4(11)\n\t" /* arg1->r3 */ \ + "lwz 4, 8(11)\n\t" /* arg2->r4 */ \ + "lwz 5, 12(11)\n\t" /* arg3->r5 */ \ + "lwz 6, 16(11)\n\t" /* arg4->r6 */ \ + "lwz 7, 20(11)\n\t" /* arg5->r7 */ \ + "lwz 8, 24(11)\n\t" /* arg6->r8 */ \ + "lwz 9, 28(11)\n\t" /* arg7->r9 */ \ + "lwz 10, 32(11)\n\t" /* arg8->r10 */ \ + "lwz 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "lwz 2,-8(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(72) \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#endif /* PLAT_ppc32_aix5 */ + +/* ------------------------ ppc64-aix5 ------------------------- */ + +#if defined(PLAT_ppc64_aix5) + +/* ARGREGS: r3 r4 r5 r6 r7 r8 r9 r10 (the rest on stack somewhere) */ + +/* These regs are trashed by the hidden call. */ +#define __CALLER_SAVED_REGS \ + "lr", "ctr", "xer", \ + "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", \ + "r0", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", \ + "r11", "r12", "r13" + +/* Expand the stack frame, copying enough info that unwinding + still works. Trashes r3. */ + +#define VG_EXPAND_FRAME_BY_trashes_r3(_n_fr) \ + "addi 1,1,-" #_n_fr "\n\t" \ + "ld 3," #_n_fr "(1)\n\t" \ + "std 3,0(1)\n\t" + +#define VG_CONTRACT_FRAME_BY(_n_fr) \ + "addi 1,1," #_n_fr "\n\t" + +/* These CALL_FN_ macros assume that on ppc64-aix5, sizeof(unsigned + long) == 8. */ + +#define CALL_FN_W_v(lval, orig) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+0]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_W(lval, orig, arg1) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+1]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WW(lval, orig, arg1,arg2) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+2]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWW(lval, orig, arg1,arg2,arg3) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+3]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_WWWW(lval, orig, arg1,arg2,arg3,arg4) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+4]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_5W(lval, orig, arg1,arg2,arg3,arg4,arg5) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+5]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_6W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+6]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_7W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+7]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_8W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+8]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 10, 64(11)\n\t" /* arg8->r10 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_9W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+9]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + VG_EXPAND_FRAME_BY_trashes_r3(128) \ + /* arg9 */ \ + "ld 3,72(11)\n\t" \ + "std 3,112(1)\n\t" \ + /* args1-8 */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 10, 64(11)\n\t" /* arg8->r10 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(128) \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_10W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+10]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + _argvec[2+10] = (unsigned long)arg10; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + VG_EXPAND_FRAME_BY_trashes_r3(128) \ + /* arg10 */ \ + "ld 3,80(11)\n\t" \ + "std 3,120(1)\n\t" \ + /* arg9 */ \ + "ld 3,72(11)\n\t" \ + "std 3,112(1)\n\t" \ + /* args1-8 */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 10, 64(11)\n\t" /* arg8->r10 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(128) \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_11W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10,arg11) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+11]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + _argvec[2+10] = (unsigned long)arg10; \ + _argvec[2+11] = (unsigned long)arg11; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + VG_EXPAND_FRAME_BY_trashes_r3(144) \ + /* arg11 */ \ + "ld 3,88(11)\n\t" \ + "std 3,128(1)\n\t" \ + /* arg10 */ \ + "ld 3,80(11)\n\t" \ + "std 3,120(1)\n\t" \ + /* arg9 */ \ + "ld 3,72(11)\n\t" \ + "std 3,112(1)\n\t" \ + /* args1-8 */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 10, 64(11)\n\t" /* arg8->r10 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(144) \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#define CALL_FN_W_12W(lval, orig, arg1,arg2,arg3,arg4,arg5,arg6, \ + arg7,arg8,arg9,arg10,arg11,arg12) \ + do { \ + volatile OrigFn _orig = (orig); \ + volatile unsigned long _argvec[3+12]; \ + volatile unsigned long _res; \ + /* _argvec[0] holds current r2 across the call */ \ + _argvec[1] = (unsigned long)_orig.r2; \ + _argvec[2] = (unsigned long)_orig.nraddr; \ + _argvec[2+1] = (unsigned long)arg1; \ + _argvec[2+2] = (unsigned long)arg2; \ + _argvec[2+3] = (unsigned long)arg3; \ + _argvec[2+4] = (unsigned long)arg4; \ + _argvec[2+5] = (unsigned long)arg5; \ + _argvec[2+6] = (unsigned long)arg6; \ + _argvec[2+7] = (unsigned long)arg7; \ + _argvec[2+8] = (unsigned long)arg8; \ + _argvec[2+9] = (unsigned long)arg9; \ + _argvec[2+10] = (unsigned long)arg10; \ + _argvec[2+11] = (unsigned long)arg11; \ + _argvec[2+12] = (unsigned long)arg12; \ + __asm__ volatile( \ + "mr 11,%1\n\t" \ + VG_EXPAND_FRAME_BY_trashes_r3(512) \ + "std 2,-16(11)\n\t" /* save tocptr */ \ + "ld 2,-8(11)\n\t" /* use nraddr's tocptr */ \ + VG_EXPAND_FRAME_BY_trashes_r3(144) \ + /* arg12 */ \ + "ld 3,96(11)\n\t" \ + "std 3,136(1)\n\t" \ + /* arg11 */ \ + "ld 3,88(11)\n\t" \ + "std 3,128(1)\n\t" \ + /* arg10 */ \ + "ld 3,80(11)\n\t" \ + "std 3,120(1)\n\t" \ + /* arg9 */ \ + "ld 3,72(11)\n\t" \ + "std 3,112(1)\n\t" \ + /* args1-8 */ \ + "ld 3, 8(11)\n\t" /* arg1->r3 */ \ + "ld 4, 16(11)\n\t" /* arg2->r4 */ \ + "ld 5, 24(11)\n\t" /* arg3->r5 */ \ + "ld 6, 32(11)\n\t" /* arg4->r6 */ \ + "ld 7, 40(11)\n\t" /* arg5->r7 */ \ + "ld 8, 48(11)\n\t" /* arg6->r8 */ \ + "ld 9, 56(11)\n\t" /* arg7->r9 */ \ + "ld 10, 64(11)\n\t" /* arg8->r10 */ \ + "ld 11, 0(11)\n\t" /* target->r11 */ \ + VALGRIND_BRANCH_AND_LINK_TO_NOREDIR_R11 \ + "mr 11,%1\n\t" \ + "mr %0,3\n\t" \ + "ld 2,-16(11)\n\t" /* restore tocptr */ \ + VG_CONTRACT_FRAME_BY(144) \ + VG_CONTRACT_FRAME_BY(512) \ + : /*out*/ "=r" (_res) \ + : /*in*/ "r" (&_argvec[2]) \ + : /*trash*/ "cc", "memory", __CALLER_SAVED_REGS \ + ); \ + lval = (__typeof__(lval)) _res; \ + } while (0) + +#endif /* PLAT_ppc64_aix5 */ + + +/* ------------------------------------------------------------------ */ +/* ARCHITECTURE INDEPENDENT MACROS for CLIENT REQUESTS. */ +/* */ +/* ------------------------------------------------------------------ */ + +/* Some request codes. There are many more of these, but most are not + exposed to end-user view. These are the public ones, all of the + form 0x1000 + small_number. + + Core ones are in the range 0x00000000--0x0000ffff. The non-public + ones start at 0x2000. +*/ + +/* These macros are used by tools -- they must be public, but don't + embed them into other programs. */ +#define VG_USERREQ_TOOL_BASE(a,b) \ + ((unsigned int)(((a)&0xff) << 24 | ((b)&0xff) << 16)) +#define VG_IS_TOOL_USERREQ(a, b, v) \ + (VG_USERREQ_TOOL_BASE(a,b) == ((v) & 0xffff0000)) + +/* !! ABIWARNING !! ABIWARNING !! ABIWARNING !! ABIWARNING !! + This enum comprises an ABI exported by Valgrind to programs + which use client requests. DO NOT CHANGE THE ORDER OF THESE + ENTRIES, NOR DELETE ANY -- add new ones at the end. */ +typedef enum +{ VG_USERREQ__RUNNING_ON_VALGRIND = 0x1001, + VG_USERREQ__DISCARD_TRANSLATIONS = 0x1002, + + /* These allow any function to be called from the simulated + CPU but run on the real CPU. Nb: the first arg passed to + the function is always the ThreadId of the running + thread! So CLIENT_CALL0 actually requires a 1 arg + function, etc. */ + VG_USERREQ__CLIENT_CALL0 = 0x1101, + VG_USERREQ__CLIENT_CALL1 = 0x1102, + VG_USERREQ__CLIENT_CALL2 = 0x1103, + VG_USERREQ__CLIENT_CALL3 = 0x1104, + + /* Can be useful in regression testing suites -- eg. can + send Valgrind's output to /dev/null and still count + errors. */ + VG_USERREQ__COUNT_ERRORS = 0x1201, + + /* These are useful and can be interpreted by any tool that + tracks malloc() et al, by using vg_replace_malloc.c. */ + VG_USERREQ__MALLOCLIKE_BLOCK = 0x1301, + VG_USERREQ__FREELIKE_BLOCK = 0x1302, + /* Memory pool support. */ + VG_USERREQ__CREATE_MEMPOOL = 0x1303, + VG_USERREQ__DESTROY_MEMPOOL = 0x1304, + VG_USERREQ__MEMPOOL_ALLOC = 0x1305, + VG_USERREQ__MEMPOOL_FREE = 0x1306, + VG_USERREQ__MEMPOOL_TRIM = 0x1307, + VG_USERREQ__MOVE_MEMPOOL = 0x1308, + VG_USERREQ__MEMPOOL_CHANGE = 0x1309, + VG_USERREQ__MEMPOOL_EXISTS = 0x130a, + + /* Allow printfs to valgrind log. */ + VG_USERREQ__PRINTF = 0x1401, + VG_USERREQ__PRINTF_BACKTRACE = 0x1402, + + /* Stack support. */ + VG_USERREQ__STACK_REGISTER = 0x1501, + VG_USERREQ__STACK_DEREGISTER = 0x1502, + VG_USERREQ__STACK_CHANGE = 0x1503, + + /* Wine support */ + VG_USERREQ__LOAD_PDB_DEBUGINFO = 0x1601 +} Vg_ClientRequest; + +#if !defined(__GNUC__) +#define __extension__ /* */ +#endif + +/* Returns the number of Valgrinds this code is running under. That + is, 0 if running natively, 1 if running under Valgrind, 2 if + running under Valgrind which is running under another Valgrind, + etc. */ +#define RUNNING_ON_VALGRIND __extension__ \ + ({unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0 /* if not */, \ + VG_USERREQ__RUNNING_ON_VALGRIND, \ + 0, 0, 0, 0, 0); \ + _qzz_res; \ + }) + + +/* Discard translation of code in the range [_qzz_addr .. _qzz_addr + + _qzz_len - 1]. Useful if you are debugging a JITter or some such, + since it provides a way to make sure valgrind will retranslate the + invalidated area. Returns no value. */ +#define VALGRIND_DISCARD_TRANSLATIONS(_qzz_addr,_qzz_len) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__DISCARD_TRANSLATIONS, \ + _qzz_addr, _qzz_len, 0, 0, 0); \ + } + + +/* These requests are for getting Valgrind itself to print something. + Possibly with a backtrace. This is a really ugly hack. The return value + is the number of characters printed, excluding the "**<pid>** " part at the + start and the backtrace (if present). */ + +#if defined(NVALGRIND) + +#define VALGRIND_PRINTF(...) +#define VALGRIND_PRINTF_BACKTRACE(...) + +#else /* NVALGRIND */ + +/* Modern GCC will optimize the static routine out if unused, + and unused attribute will shut down warnings about it. */ +static int VALGRIND_PRINTF (const char *format, ...) + __attribute__ ((format (__printf__, 1, 2), __unused__)); +static int +VALGRIND_PRINTF (const char *format, ...) +{ + unsigned long _qzz_res; + va_list vargs; + va_start (vargs, format); + VALGRIND_DO_CLIENT_REQUEST (_qzz_res, 0, VG_USERREQ__PRINTF, + (unsigned long) format, (unsigned long) vargs, + 0, 0, 0); + va_end (vargs); + return (int) _qzz_res; +} + +static int VALGRIND_PRINTF_BACKTRACE (const char *format, ...) + __attribute__ ((format (__printf__, 1, 2), __unused__)); +static int +VALGRIND_PRINTF_BACKTRACE (const char *format, ...) +{ + unsigned long _qzz_res; + va_list vargs; + va_start (vargs, format); + VALGRIND_DO_CLIENT_REQUEST (_qzz_res, 0, VG_USERREQ__PRINTF_BACKTRACE, + (unsigned long) format, (unsigned long) vargs, + 0, 0, 0); + va_end (vargs); + return (int) _qzz_res; +} + +#endif /* NVALGRIND */ + + +/* These requests allow control to move from the simulated CPU to the + real CPU, calling an arbitary function. + + Note that the current ThreadId is inserted as the first argument. + So this call: + + VALGRIND_NON_SIMD_CALL2(f, arg1, arg2) + + requires f to have this signature: + + Word f(Word tid, Word arg1, Word arg2) + + where "Word" is a word-sized type. + + Note that these client requests are not entirely reliable. For example, + if you call a function with them that subsequently calls printf(), + there's a high chance Valgrind will crash. Generally, your prospects of + these working are made higher if the called function does not refer to + any global variables, and does not refer to any libc or other functions + (printf et al). Any kind of entanglement with libc or dynamic linking is + likely to have a bad outcome, for tricky reasons which we've grappled + with a lot in the past. +*/ +#define VALGRIND_NON_SIMD_CALL0(_qyy_fn) \ + __extension__ \ + ({unsigned long _qyy_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qyy_res, 0 /* default return */, \ + VG_USERREQ__CLIENT_CALL0, \ + _qyy_fn, \ + 0, 0, 0, 0); \ + _qyy_res; \ + }) + +#define VALGRIND_NON_SIMD_CALL1(_qyy_fn, _qyy_arg1) \ + __extension__ \ + ({unsigned long _qyy_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qyy_res, 0 /* default return */, \ + VG_USERREQ__CLIENT_CALL1, \ + _qyy_fn, \ + _qyy_arg1, 0, 0, 0); \ + _qyy_res; \ + }) + +#define VALGRIND_NON_SIMD_CALL2(_qyy_fn, _qyy_arg1, _qyy_arg2) \ + __extension__ \ + ({unsigned long _qyy_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qyy_res, 0 /* default return */, \ + VG_USERREQ__CLIENT_CALL2, \ + _qyy_fn, \ + _qyy_arg1, _qyy_arg2, 0, 0); \ + _qyy_res; \ + }) + +#define VALGRIND_NON_SIMD_CALL3(_qyy_fn, _qyy_arg1, _qyy_arg2, _qyy_arg3) \ + __extension__ \ + ({unsigned long _qyy_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qyy_res, 0 /* default return */, \ + VG_USERREQ__CLIENT_CALL3, \ + _qyy_fn, \ + _qyy_arg1, _qyy_arg2, \ + _qyy_arg3, 0); \ + _qyy_res; \ + }) + + +/* Counts the number of errors that have been recorded by a tool. Nb: + the tool must record the errors with VG_(maybe_record_error)() or + VG_(unique_error)() for them to be counted. */ +#define VALGRIND_COUNT_ERRORS \ + __extension__ \ + ({unsigned int _qyy_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qyy_res, 0 /* default return */, \ + VG_USERREQ__COUNT_ERRORS, \ + 0, 0, 0, 0, 0); \ + _qyy_res; \ + }) + +/* Several Valgrind tools (Memcheck, Massif, Helgrind, DRD) rely on knowing + when heap blocks are allocated in order to give accurate results. This + happens automatically for the standard allocator functions such as + malloc(), calloc(), realloc(), memalign(), new, new[], free(), delete, + delete[], etc. + + But if your program uses a custom allocator, this doesn't automatically + happen, and Valgrind will not do as well. For example, if you allocate + superblocks with mmap() and then allocates chunks of the superblocks, all + Valgrind's observations will be at the mmap() level and it won't know that + the chunks should be considered separate entities. In Memcheck's case, + that means you probably won't get heap block overrun detection (because + there won't be redzones marked as unaddressable) and you definitely won't + get any leak detection. + + The following client requests allow a custom allocator to be annotated so + that it can be handled accurately by Valgrind. + + VALGRIND_MALLOCLIKE_BLOCK marks a region of memory as having been allocated + by a malloc()-like function. For Memcheck (an illustrative case), this + does two things: + + - It records that the block has been allocated. This means any addresses + within the block mentioned in error messages will be + identified as belonging to the block. It also means that if the block + isn't freed it will be detected by the leak checker. + + - It marks the block as being addressable and undefined (if 'is_zeroed' is + not set), or addressable and defined (if 'is_zeroed' is set). This + controls how accesses to the block by the program are handled. + + 'addr' is the start of the usable block (ie. after any + redzone), 'sizeB' is its size. 'rzB' is the redzone size if the allocator + can apply redzones -- these are blocks of padding at the start and end of + each block. Adding redzones is recommended as it makes it much more likely + Valgrind will spot block overruns. `is_zeroed' indicates if the memory is + zeroed (or filled with another predictable value), as is the case for + calloc(). + + VALGRIND_MALLOCLIKE_BLOCK should be put immediately after the point where a + heap block -- that will be used by the client program -- is allocated. + It's best to put it at the outermost level of the allocator if possible; + for example, if you have a function my_alloc() which calls + internal_alloc(), and the client request is put inside internal_alloc(), + stack traces relating to the heap block will contain entries for both + my_alloc() and internal_alloc(), which is probably not what you want. + + For Memcheck users: if you use VALGRIND_MALLOCLIKE_BLOCK to carve out + custom blocks from within a heap block, B, that has been allocated with + malloc/calloc/new/etc, then block B will be *ignored* during leak-checking + -- the custom blocks will take precedence. + + VALGRIND_FREELIKE_BLOCK is the partner to VALGRIND_MALLOCLIKE_BLOCK. For + Memcheck, it does two things: + + - It records that the block has been deallocated. This assumes that the + block was annotated as having been allocated via + VALGRIND_MALLOCLIKE_BLOCK. Otherwise, an error will be issued. + + - It marks the block as being unaddressable. + + VALGRIND_FREELIKE_BLOCK should be put immediately after the point where a + heap block is deallocated. + + In many cases, these two client requests will not be enough to get your + allocator working well with Memcheck. More specifically, if your allocator + writes to freed blocks in any way then a VALGRIND_MAKE_MEM_UNDEFINED call + will be necessary to mark the memory as addressable just before the zeroing + occurs, otherwise you'll get a lot of invalid write errors. For example, + you'll need to do this if your allocator recycles freed blocks, but it + zeroes them before handing them back out (via VALGRIND_MALLOCLIKE_BLOCK). + Alternatively, if your allocator reuses freed blocks for allocator-internal + data structures, VALGRIND_MAKE_MEM_UNDEFINED calls will also be necessary. + + Really, what's happening is a blurring of the lines between the client + program and the allocator... after VALGRIND_FREELIKE_BLOCK is called, the + memory should be considered unaddressable to the client program, but the + allocator knows more than the rest of the client program and so may be able + to safely access it. Extra client requests are necessary for Valgrind to + understand the distinction between the allocator and the rest of the + program. + + Note: there is currently no VALGRIND_REALLOCLIKE_BLOCK client request; it + has to be emulated with MALLOCLIKE/FREELIKE and memory copying. + + Ignored if addr == 0. +*/ +#define VALGRIND_MALLOCLIKE_BLOCK(addr, sizeB, rzB, is_zeroed) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__MALLOCLIKE_BLOCK, \ + addr, sizeB, rzB, is_zeroed, 0); \ + (void) _qzz_res; /* compiler warning */ \ + } + +/* See the comment for VALGRIND_MALLOCLIKE_BLOCK for details. + Ignored if addr == 0. +*/ +#define VALGRIND_FREELIKE_BLOCK(addr, rzB) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__FREELIKE_BLOCK, \ + addr, rzB, 0, 0, 0); \ + (void) _qzz_res; /* compiler warning */ \ + } + +/* Create a memory pool. */ +#define VALGRIND_CREATE_MEMPOOL(pool, rzB, is_zeroed) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__CREATE_MEMPOOL, \ + pool, rzB, is_zeroed, 0, 0); \ + } + +/* Destroy a memory pool. */ +#define VALGRIND_DESTROY_MEMPOOL(pool) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__DESTROY_MEMPOOL, \ + pool, 0, 0, 0, 0); \ + } + +/* Associate a piece of memory with a memory pool. */ +#define VALGRIND_MEMPOOL_ALLOC(pool, addr, size) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__MEMPOOL_ALLOC, \ + pool, addr, size, 0, 0); \ + } + +/* Disassociate a piece of memory from a memory pool. */ +#define VALGRIND_MEMPOOL_FREE(pool, addr) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__MEMPOOL_FREE, \ + pool, addr, 0, 0, 0); \ + } + +/* Disassociate any pieces outside a particular range. */ +#define VALGRIND_MEMPOOL_TRIM(pool, addr, size) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__MEMPOOL_TRIM, \ + pool, addr, size, 0, 0); \ + } + +/* Resize and/or move a piece associated with a memory pool. */ +#define VALGRIND_MOVE_MEMPOOL(poolA, poolB) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__MOVE_MEMPOOL, \ + poolA, poolB, 0, 0, 0); \ + } + +/* Resize and/or move a piece associated with a memory pool. */ +#define VALGRIND_MEMPOOL_CHANGE(pool, addrA, addrB, size) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__MEMPOOL_CHANGE, \ + pool, addrA, addrB, size, 0); \ + } + +/* Return 1 if a mempool exists, else 0. */ +#define VALGRIND_MEMPOOL_EXISTS(pool) \ + __extension__ \ + ({unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__MEMPOOL_EXISTS, \ + pool, 0, 0, 0, 0); \ + _qzz_res; \ + }) + +/* Mark a piece of memory as being a stack. Returns a stack id. */ +#define VALGRIND_STACK_REGISTER(start, end) \ + __extension__ \ + ({unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__STACK_REGISTER, \ + start, end, 0, 0, 0); \ + _qzz_res; \ + }) + +/* Unmark the piece of memory associated with a stack id as being a + stack. */ +#define VALGRIND_STACK_DEREGISTER(id) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__STACK_DEREGISTER, \ + id, 0, 0, 0, 0); \ + } + +/* Change the start and end address of the stack id. */ +#define VALGRIND_STACK_CHANGE(id, start, end) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__STACK_CHANGE, \ + id, start, end, 0, 0); \ + } + +/* Load PDB debug info for Wine PE image_map. */ +#define VALGRIND_LOAD_PDB_DEBUGINFO(fd, ptr, total_size, delta) \ + {unsigned int _qzz_res; \ + VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \ + VG_USERREQ__LOAD_PDB_DEBUGINFO, \ + fd, ptr, total_size, delta, 0); \ + } + + +#undef PLAT_x86_linux +#undef PLAT_amd64_linux +#undef PLAT_ppc32_linux +#undef PLAT_ppc64_linux +#undef PLAT_ppc32_aix5 +#undef PLAT_ppc64_aix5 + +#endif /* __VALGRIND_H */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vec.c b/src/vppinfra/vec.c new file mode 100644 index 00000000..2d7ae1d4 --- /dev/null +++ b/src/vppinfra/vec.c @@ -0,0 +1,171 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/vec.h> +#include <vppinfra/mem.h> + +/* Vector resize operator. Called as needed by various macros such as + vec_add1() when we need to allocate memory. */ +void * +vec_resize_allocate_memory (void *v, + word length_increment, + uword data_bytes, + uword header_bytes, uword data_align) +{ + vec_header_t *vh = _vec_find (v); + uword old_alloc_bytes, new_alloc_bytes; + void *old, *new; + + header_bytes = vec_header_bytes (header_bytes); + + data_bytes += header_bytes; + + if (!v) + { + new = clib_mem_alloc_aligned_at_offset (data_bytes, data_align, header_bytes, 1 /* yes, call os_out_of_memory */ + ); + data_bytes = clib_mem_size (new); + memset (new, 0, data_bytes); + v = new + header_bytes; + _vec_len (v) = length_increment; + return v; + } + + vh->len += length_increment; + old = v - header_bytes; + + /* Vector header must start heap object. */ + ASSERT (clib_mem_is_heap_object (old)); + + old_alloc_bytes = clib_mem_size (old); + + /* Need to resize? */ + if (data_bytes <= old_alloc_bytes) + return v; + + new_alloc_bytes = (old_alloc_bytes * 3) / 2; + if (new_alloc_bytes < data_bytes) + new_alloc_bytes = data_bytes; + + new = + clib_mem_alloc_aligned_at_offset (new_alloc_bytes, data_align, + header_bytes, + 1 /* yes, call os_out_of_memory */ ); + + /* FIXME fail gracefully. */ + if (!new) + clib_panic + ("vec_resize fails, length increment %d, data bytes %d, alignment %d", + length_increment, data_bytes, data_align); + + clib_memcpy (new, old, old_alloc_bytes); + clib_mem_free (old); + v = new; + + /* Allocator may give a bit of extra room. */ + new_alloc_bytes = clib_mem_size (v); + + /* Zero new memory. */ + memset (v + old_alloc_bytes, 0, new_alloc_bytes - old_alloc_bytes); + + return v + header_bytes; +} + +uword +clib_mem_is_vec_h (void *v, uword header_bytes) +{ + return clib_mem_is_heap_object (vec_header (v, header_bytes)); +} + +/** \cond */ + +#ifdef TEST + +#include <stdio.h> + +void +main (int argc, char *argv[]) +{ + word n = atoi (argv[1]); + word i, *x = 0; + + typedef struct + { + word x, y, z; + } FOO; + + FOO *foos = vec_init (FOO, 10), *f; + + vec_validate (foos, 100); + foos[100].x = 99; + + _vec_len (foos) = 0; + for (i = 0; i < n; i++) + { + vec_add1 (x, i); + vec_add2 (foos, f, 1); + f->x = 2 * i; + f->y = 3 * i; + f->z = 4 * i; + } + + { + word n = 2; + word m = 42; + vec_delete (foos, n, m); + } + + { + word n = 2; + word m = 42; + vec_insert (foos, n, m); + } + + vec_free (x); + vec_free (foos); + exit (0); +} +#endif +/** \endcond */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vec.h b/src/vppinfra/vec.h new file mode 100644 index 00000000..e2cb24c5 --- /dev/null +++ b/src/vppinfra/vec.h @@ -0,0 +1,1009 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_vec_h +#define included_vec_h + +#include <vppinfra/clib.h> /* word, etc */ +#include <vppinfra/mem.h> /* clib_mem_free */ +#include <vppinfra/string.h> /* memcpy, memmove */ +#include <vppinfra/vec_bootstrap.h> + +/** \file + + CLIB vectors are ubiquitous dynamically resized arrays with by user + defined "headers". Many CLIB data structures (e.g. hash, heap, + pool) are vectors with various different headers. + + The memory layout looks like this: + +~~~~~~~~ + user header (aligned to uword boundary) + vector length: number of elements + user's pointer-> vector element #0 + vector element #1 + ... +~~~~~~~~ + + The user pointer contains the address of vector element # 0. Null + pointer vectors are valid and mean a zero length vector. + + You can reset the length of an allocated vector to zero via the + vec_reset_length(v) macro, or by setting the vector length field to + zero (e.g. _vec_len (v) = 0). Vec_reset_length(v) preferred: it + understands Null pointers. + + Typically, the header is not present. Headers allow for other + data structures to be built atop CLIB vectors. + + Users may specify the alignment for data elements via the + vec_*_aligned macros. + + Vectors elements can be any C type e.g. (int, double, struct bar). + This is also true for data types built atop vectors (e.g. heap, + pool, etc.). + + Many macros have _a variants supporting alignment of vector data + and _h variants supporting non zero length vector headers. + The _ha variants support both. + + Standard programming error: memorize a pointer to the ith element + of a vector then expand it. Vectors expand by 3/2, so such code + may appear to work for a period of time. Memorize vector indices + which are invariant. + */ + +/** \brief Low-level resize allocation function, usually not called directly + + @param v pointer to a vector + @param length_increment length increment in elements + @param data_bytes requested size in bytes + @param header_bytes header size in bytes (may be zero) + @param data_align alignment (may be zero) + @return v_prime pointer to resized vector, may or may not equal v +*/ +void *vec_resize_allocate_memory (void *v, + word length_increment, + uword data_bytes, + uword header_bytes, uword data_align); + +/** \brief Low-level vector resize function, usually not called directly + + @param v pointer to a vector + @param length_increment length increment in elements + @param data_bytes requested size in bytes + @param header_bytes header size in bytes (may be zero) + @param data_align alignment (may be zero) + @return v_prime pointer to resized vector, may or may not equal v +*/ + +always_inline void * +_vec_resize (void *v, + word length_increment, + uword data_bytes, uword header_bytes, uword data_align) +{ + vec_header_t *vh = _vec_find (v); + uword new_data_bytes, aligned_header_bytes; + + aligned_header_bytes = vec_header_bytes (header_bytes); + + new_data_bytes = data_bytes + aligned_header_bytes; + + if (PREDICT_TRUE (v != 0)) + { + void *p = v - aligned_header_bytes; + + /* Vector header must start heap object. */ + ASSERT (clib_mem_is_heap_object (p)); + + /* Typically we'll not need to resize. */ + if (new_data_bytes <= clib_mem_size (p)) + { + vh->len += length_increment; + return v; + } + } + + /* Slow path: call helper function. */ + return vec_resize_allocate_memory (v, length_increment, data_bytes, + header_bytes, + clib_max (sizeof (vec_header_t), + data_align)); +} + +/** \brief Determine if vector will resize with next allocation + + @param v pointer to a vector + @param length_increment length increment in elements + @param data_bytes requested size in bytes + @param header_bytes header size in bytes (may be zero) + @param data_align alignment (may be zero) + @return 1 if vector will resize 0 otherwise +*/ + +always_inline int +_vec_resize_will_expand (void *v, + word length_increment, + uword data_bytes, uword header_bytes, + uword data_align) +{ + uword new_data_bytes, aligned_header_bytes; + + aligned_header_bytes = vec_header_bytes (header_bytes); + + new_data_bytes = data_bytes + aligned_header_bytes; + + if (PREDICT_TRUE (v != 0)) + { + void *p = v - aligned_header_bytes; + + /* Vector header must start heap object. */ + ASSERT (clib_mem_is_heap_object (p)); + + /* Typically we'll not need to resize. */ + if (new_data_bytes <= clib_mem_size (p)) + return 0; + } + return 1; +} + +/** \brief Predicate function, says whether the supplied vector is a clib heap + object (general version). + + @param v pointer to a vector + @param header_bytes vector header size in bytes (may be zero) + @return 0 or 1 +*/ +uword clib_mem_is_vec_h (void *v, uword header_bytes); + + +/** \brief Predicate function, says whether the supplied vector is a clib heap + object + + @param v pointer to a vector + @return 0 or 1 +*/ +always_inline uword +clib_mem_is_vec (void *v) +{ + return clib_mem_is_vec_h (v, 0); +} + +/* Local variable naming macro (prevents collisions with other macro naming). */ +#define _v(var) _vec_##var + +/** \brief Resize a vector (general version). + Add N elements to end of given vector V, return pointer to start of vector. + Vector will have room for H header bytes and will have user's data aligned + at alignment A (rounded to next power of 2). + + @param V pointer to a vector + @param N number of elements to add + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ + +#define vec_resize_ha(V,N,H,A) \ +do { \ + word _v(n) = (N); \ + word _v(l) = vec_len (V); \ + V = _vec_resize ((V), _v(n), (_v(l) + _v(n)) * sizeof ((V)[0]), (H), (A)); \ +} while (0) + +/** \brief Resize a vector (no header, unspecified alignment) + Add N elements to end of given vector V, return pointer to start of vector. + Vector will have room for H header bytes and will have user's data aligned + at alignment A (rounded to next power of 2). + + @param V pointer to a vector + @param N number of elements to add + @return V (value-result macro parameter) +*/ +#define vec_resize(V,N) vec_resize_ha(V,N,0,0) + +/** \brief Resize a vector (no header, alignment specified). + Add N elements to end of given vector V, return pointer to start of vector. + Vector will have room for H header bytes and will have user's data aligned + at alignment A (rounded to next power of 2). + + @param V pointer to a vector + @param N number of elements to add + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ + +#define vec_resize_aligned(V,N,A) vec_resize_ha(V,N,0,A) + +/** \brief Allocate space for N more elements + + @param V pointer to a vector + @param N number of elements to add + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ + +#define vec_alloc_ha(V,N,H,A) \ +do { \ + uword _v(l) = vec_len (V); \ + vec_resize_ha (V, N, H, A); \ + _vec_len (V) = _v(l); \ +} while (0) + +/** \brief Allocate space for N more elements + (no header, unspecified alignment) + + @param V pointer to a vector + @param N number of elements to add + @return V (value-result macro parameter) +*/ +#define vec_alloc(V,N) vec_alloc_ha(V,N,0,0) + +/** \brief Allocate space for N more elements (no header, given alignment) + @param V pointer to a vector + @param N number of elements to add + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ + +#define vec_alloc_aligned(V,N,A) vec_alloc_ha(V,N,0,A) + +/** \brief Create new vector of given type and length (general version). + @param T type of elements in new vector + @param N number of elements to add + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V new vector +*/ +#define vec_new_ha(T,N,H,A) \ +({ \ + word _v(n) = (N); \ + _vec_resize ((T *) 0, _v(n), _v(n) * sizeof (T), (H), (A)); \ +}) + +/** \brief Create new vector of given type and length + (unspecified alignment, no header). + + @param T type of elements in new vector + @param N number of elements to add + @return V new vector +*/ +#define vec_new(T,N) vec_new_ha(T,N,0,0) +/** \brief Create new vector of given type and length + (alignment specified, no header). + + @param T type of elements in new vector + @param N number of elements to add + @param A alignment (may be zero) + @return V new vector +*/ +#define vec_new_aligned(T,N,A) vec_new_ha(T,N,0,A) + +/** \brief Free vector's memory (general version) + + @param V pointer to a vector + @param H size of header in bytes + @return V (value-result parameter, V=0) +*/ +#define vec_free_h(V,H) \ +do { \ + if (V) \ + { \ + clib_mem_free (vec_header ((V), (H))); \ + V = 0; \ + } \ +} while (0) + +/** \brief Free vector's memory (no header). + @param V pointer to a vector + @return V (value-result parameter, V=0) +*/ +#define vec_free(V) vec_free_h(V,0) + +/**\brief Free vector user header (syntactic sugar) + @param h vector header + @void +*/ +#define vec_free_header(h) clib_mem_free (h) + +/** \brief Return copy of vector (general version). + + @param V pointer to a vector + @param H size of header in bytes + @param A alignment (may be zero) + + @return Vdup copy of vector +*/ + +#define vec_dup_ha(V,H,A) \ +({ \ + __typeof__ ((V)[0]) * _v(v) = 0; \ + uword _v(l) = vec_len (V); \ + if (_v(l) > 0) \ + { \ + vec_resize_ha (_v(v), _v(l), (H), (A)); \ + clib_memcpy (_v(v), (V), _v(l) * sizeof ((V)[0]));\ + } \ + _v(v); \ +}) + +/** \brief Return copy of vector (no header, no alignment) + + @param V pointer to a vector + @return Vdup copy of vector +*/ +#define vec_dup(V) vec_dup_ha(V,0,0) + +/** \brief Return copy of vector (no header, alignment specified). + + @param V pointer to a vector + @param A alignment (may be zero) + + @return Vdup copy of vector +*/ +#define vec_dup_aligned(V,A) vec_dup_ha(V,0,A) + +/** \brief Copy a vector, memcpy wrapper. Assumes sizeof(SRC[0]) == + sizeof(DST[0]) + + @param DST destination + @param SRC source +*/ +#define vec_copy(DST,SRC) clib_memcpy (DST, SRC, vec_len (DST) * \ + sizeof ((DST)[0])) + +/** \brief Clone a vector. Make a new vector with the + same size as a given vector but possibly with a different type. + + @param NEW_V pointer to new vector + @param OLD_V pointer to old vector +*/ +#define vec_clone(NEW_V,OLD_V) \ +do { \ + (NEW_V) = 0; \ + (NEW_V) = _vec_resize ((NEW_V), vec_len (OLD_V), \ + vec_len (OLD_V) * sizeof ((NEW_V)[0]), (0), (0)); \ +} while (0) + +/** \brief Make sure vector is long enough for given index (general version). + + @param V (possibly NULL) pointer to a vector. + @param I vector index which will be valid upon return + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ + +#define vec_validate_ha(V,I,H,A) \ +do { \ + word _v(i) = (I); \ + word _v(l) = vec_len (V); \ + if (_v(i) >= _v(l)) \ + { \ + vec_resize_ha ((V), 1 + (_v(i) - _v(l)), (H), (A)); \ + /* Must zero new space since user may have previously \ + used e.g. _vec_len (v) -= 10 */ \ + memset ((V) + _v(l), 0, (1 + (_v(i) - _v(l))) * sizeof ((V)[0])); \ + } \ +} while (0) + +/** \brief Make sure vector is long enough for given index + (no header, unspecified alignment) + + @param V (possibly NULL) pointer to a vector. + @param I vector index which will be valid upon return + @return V (value-result macro parameter) +*/ +#define vec_validate(V,I) vec_validate_ha(V,I,0,0) + +/** \brief Make sure vector is long enough for given index + (no header, specified alignment) + + @param V (possibly NULL) pointer to a vector. + @param I vector index which will be valid upon return + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ + +#define vec_validate_aligned(V,I,A) vec_validate_ha(V,I,0,A) + +/** \brief Make sure vector is long enough for given index + and initialize empty space (general version) + + @param V (possibly NULL) pointer to a vector. + @param I vector index which will be valid upon return + @param INIT initial value (can be a complex expression!) + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ +#define vec_validate_init_empty_ha(V,I,INIT,H,A) \ +do { \ + word _v(i) = (I); \ + word _v(l) = vec_len (V); \ + if (_v(i) >= _v(l)) \ + { \ + vec_resize_ha ((V), 1 + (_v(i) - _v(l)), (H), (A)); \ + while (_v(l) <= _v(i)) \ + { \ + (V)[_v(l)] = (INIT); \ + _v(l)++; \ + } \ + } \ +} while (0) + +/** \brief Make sure vector is long enough for given index + and initialize empty space (no header, unspecified alignment) + + @param V (possibly NULL) pointer to a vector. + @param I vector index which will be valid upon return + @param INIT initial value (can be a complex expression!) + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ + +#define vec_validate_init_empty(V,I,INIT) \ + vec_validate_init_empty_ha(V,I,INIT,0,0) + +/** \brief Make sure vector is long enough for given index + and initialize empty space (no header, alignment alignment) + + @param V (possibly NULL) pointer to a vector. + @param I vector index which will be valid upon return + @param INIT initial value (can be a complex expression!) + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ +#define vec_validate_init_empty_aligned(V,I,INIT,A) \ + vec_validate_init_empty_ha(V,I,INIT,0,A) + +/** \brief Add 1 element to end of vector (general version). + + @param V pointer to a vector + @param E element to add + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ +#define vec_add1_ha(V,E,H,A) \ +do { \ + word _v(l) = vec_len (V); \ + V = _vec_resize ((V), 1, (_v(l) + 1) * sizeof ((V)[0]), (H), (A)); \ + (V)[_v(l)] = (E); \ +} while (0) + +/** \brief Add 1 element to end of vector (unspecified alignment). + + @param V pointer to a vector + @param E element to add + @return V (value-result macro parameter) +*/ +#define vec_add1(V,E) vec_add1_ha(V,E,0,0) + +/** \brief Add 1 element to end of vector (alignment specified). + + @param V pointer to a vector + @param E element to add + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ +#define vec_add1_aligned(V,E,A) vec_add1_ha(V,E,0,A) + +/** \brief Add N elements to end of vector V, + return pointer to new elements in P. (general version) + + @param V pointer to a vector + @param P pointer to new vector element(s) + @param N number of elements to add + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V and P (value-result macro parameters) +*/ +#define vec_add2_ha(V,P,N,H,A) \ +do { \ + word _v(n) = (N); \ + word _v(l) = vec_len (V); \ + V = _vec_resize ((V), _v(n), (_v(l) + _v(n)) * sizeof ((V)[0]), (H), (A)); \ + P = (V) + _v(l); \ +} while (0) + +/** \brief Add N elements to end of vector V, + return pointer to new elements in P. (no header, unspecified alignment) + + @param V pointer to a vector + @param P pointer to new vector element(s) + @param N number of elements to add + @return V and P (value-result macro parameters) +*/ + +#define vec_add2(V,P,N) vec_add2_ha(V,P,N,0,0) + +/** \brief Add N elements to end of vector V, + return pointer to new elements in P. (no header, alignment specified) + + @param V pointer to a vector + @param P pointer to new vector element(s) + @param N number of elements to add + @param A alignment (may be zero) + @return V and P (value-result macro parameters) +*/ + +#define vec_add2_aligned(V,P,N,A) vec_add2_ha(V,P,N,0,A) + +/** \brief Add N elements to end of vector V (general version) + + @param V pointer to a vector + @param E pointer to element(s) to add + @param N number of elements to add + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ +#define vec_add_ha(V,E,N,H,A) \ +do { \ + word _v(n) = (N); \ + word _v(l) = vec_len (V); \ + V = _vec_resize ((V), _v(n), (_v(l) + _v(n)) * sizeof ((V)[0]), (H), (A)); \ + clib_memcpy ((V) + _v(l), (E), _v(n) * sizeof ((V)[0])); \ +} while (0) + +/** \brief Add N elements to end of vector V (no header, unspecified alignment) + + @param V pointer to a vector + @param E pointer to element(s) to add + @param N number of elements to add + @return V (value-result macro parameter) +*/ +#define vec_add(V,E,N) vec_add_ha(V,E,N,0,0) + +/** \brief Add N elements to end of vector V (no header, specified alignment) + + @param V pointer to a vector + @param E pointer to element(s) to add + @param N number of elements to add + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ +#define vec_add_aligned(V,E,N,A) vec_add_ha(V,E,N,0,A) + +/** \brief Returns last element of a vector and decrements its length + + @param V pointer to a vector + @return E element removed from the end of the vector +*/ +#define vec_pop(V) \ +({ \ + uword _v(l) = vec_len (V); \ + ASSERT (_v(l) > 0); \ + _v(l) -= 1; \ + _vec_len (V) = _v (l); \ + (V)[_v(l)]; \ +}) + +/** \brief Set E to the last element of a vector, decrement vector length + @param V pointer to a vector + @param E pointer to the last vector element + @return E element removed from the end of the vector + (value-result macro parameter +*/ + +#define vec_pop2(V,E) \ +({ \ + uword _v(l) = vec_len (V); \ + if (_v(l) > 0) (E) = vec_pop (V); \ + _v(l) > 0; \ +}) + +/** \brief Insert N vector elements starting at element M, + initialize new elements (general version). + + @param V (possibly NULL) pointer to a vector. + @param N number of elements to insert + @param M insertion point + @param INIT initial value (can be a complex expression!) + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ +#define vec_insert_init_empty_ha(V,N,M,INIT,H,A) \ +do { \ + word _v(l) = vec_len (V); \ + word _v(n) = (N); \ + word _v(m) = (M); \ + V = _vec_resize ((V), \ + _v(n), \ + (_v(l) + _v(n))*sizeof((V)[0]), \ + (H), (A)); \ + ASSERT (_v(m) <= _v(l)); \ + memmove ((V) + _v(m) + _v(n), \ + (V) + _v(m), \ + (_v(l) - _v(m)) * sizeof ((V)[0])); \ + memset ((V) + _v(m), INIT, _v(n) * sizeof ((V)[0])); \ +} while (0) + +/** \brief Insert N vector elements starting at element M, + initialize new elements to zero (general version) + + @param V (possibly NULL) pointer to a vector. + @param N number of elements to insert + @param M insertion point + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ +#define vec_insert_ha(V,N,M,H,A) vec_insert_init_empty_ha(V,N,M,0,H,A) + +/** \brief Insert N vector elements starting at element M, + initialize new elements to zero (no header, unspecified alignment) + + @param V (possibly NULL) pointer to a vector. + @param N number of elements to insert + @param M insertion point + @return V (value-result macro parameter) +*/ +#define vec_insert(V,N,M) vec_insert_ha(V,N,M,0,0) + +/** \brief Insert N vector elements starting at element M, + initialize new elements to zero (no header, alignment specified) + + @param V (possibly NULL) pointer to a vector. + @param N number of elements to insert + @param M insertion point + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ +#define vec_insert_aligned(V,N,M,A) vec_insert_ha(V,N,M,0,A) + +/** \brief Insert N vector elements starting at element M, + initialize new elements (no header, unspecified alignment) + + @param V (possibly NULL) pointer to a vector. + @param N number of elements to insert + @param M insertion point + @param INIT initial value (can be a complex expression!) + @return V (value-result macro parameter) +*/ + +#define vec_insert_init_empty(V,N,M,INIT) \ + vec_insert_init_empty_ha(V,N,M,INIT,0,0) +/* Resize vector by N elements starting from element M, initialize new elements to INIT (alignment specified, no header). */ + +/** \brief Insert N vector elements starting at element M, + initialize new elements (no header, specified alignment) + + @param V (possibly NULL) pointer to a vector. + @param N number of elements to insert + @param M insertion point + @param INIT initial value (can be a complex expression!) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ +#define vec_insert_init_empty_aligned(V,N,M,INIT,A) \ + vec_insert_init_empty_ha(V,N,M,INIT,0,A) + +/** \brief Insert N vector elements starting at element M, + insert given elements (general version) + + @param V (possibly NULL) pointer to a vector. + @param E element(s) to insert + @param N number of elements to insert + @param M insertion point + @param H header size in bytes (may be zero) + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ + +#define vec_insert_elts_ha(V,E,N,M,H,A) \ +do { \ + word _v(l) = vec_len (V); \ + word _v(n) = (N); \ + word _v(m) = (M); \ + V = _vec_resize ((V), \ + _v(n), \ + (_v(l) + _v(n))*sizeof((V)[0]), \ + (H), (A)); \ + ASSERT (_v(m) <= _v(l)); \ + memmove ((V) + _v(m) + _v(n), \ + (V) + _v(m), \ + (_v(l) - _v(m)) * sizeof ((V)[0])); \ + clib_memcpy ((V) + _v(m), (E), \ + _v(n) * sizeof ((V)[0])); \ +} while (0) + +/** \brief Insert N vector elements starting at element M, + insert given elements (no header, unspecified alignment) + + @param V (possibly NULL) pointer to a vector. + @param E element(s) to insert + @param N number of elements to insert + @param M insertion point + @return V (value-result macro parameter) +*/ +#define vec_insert_elts(V,E,N,M) vec_insert_elts_ha(V,E,N,M,0,0) + +/** \brief Insert N vector elements starting at element M, + insert given elements (no header, specified alignment) + + @param V (possibly NULL) pointer to a vector. + @param E element(s) to insert + @param N number of elements to insert + @param M insertion point + @param A alignment (may be zero) + @return V (value-result macro parameter) +*/ +#define vec_insert_elts_aligned(V,E,N,M,A) vec_insert_elts_ha(V,E,N,M,0,A) + +/** \brief Delete N elements starting at element M + + @param V pointer to a vector + @param N number of elements to delete + @param M first element to delete + @return V (value-result macro parameter) +*/ +#define vec_delete(V,N,M) \ +do { \ + word _v(l) = vec_len (V); \ + word _v(n) = (N); \ + word _v(m) = (M); \ + /* Copy over deleted elements. */ \ + if (_v(l) - _v(n) - _v(m) > 0) \ + memmove ((V) + _v(m), (V) + _v(m) + _v(n), \ + (_v(l) - _v(n) - _v(m)) * sizeof ((V)[0])); \ + /* Zero empty space at end (for future re-allocation). */ \ + if (_v(n) > 0) \ + memset ((V) + _v(l) - _v(n), 0, _v(n) * sizeof ((V)[0])); \ + _vec_len (V) -= _v(n); \ +} while (0) + +/** \brief Delete the element at index I + + @param V pointer to a vector + @param I index to delete +*/ +#define vec_del1(v,i) \ +do { \ + uword _vec_del_l = _vec_len (v) - 1; \ + uword _vec_del_i = (i); \ + if (_vec_del_i < _vec_del_l) \ + (v)[_vec_del_i] = (v)[_vec_del_l]; \ + _vec_len (v) = _vec_del_l; \ +} while (0) + +/** \brief Append v2 after v1. Result in v1. + @param V1 target vector + @param V2 vector to append +*/ + +#define vec_append(v1,v2) \ +do { \ + uword _v(l1) = vec_len (v1); \ + uword _v(l2) = vec_len (v2); \ + \ + v1 = _vec_resize ((v1), _v(l2), \ + (_v(l1) + _v(l2)) * sizeof ((v1)[0]), 0, 0); \ + clib_memcpy ((v1) + _v(l1), (v2), _v(l2) * sizeof ((v2)[0])); \ +} while (0) + +/** \brief Append v2 after v1. Result in v1. Specified alignment. + @param V1 target vector + @param V2 vector to append + @param align required alignment +*/ + +#define vec_append_aligned(v1,v2,align) \ +do { \ + uword _v(l1) = vec_len (v1); \ + uword _v(l2) = vec_len (v2); \ + \ + v1 = _vec_resize ((v1), _v(l2), \ + (_v(l1) + _v(l2)) * sizeof ((v1)[0]), 0, align); \ + clib_memcpy ((v1) + _v(l1), (v2), _v(l2) * sizeof ((v2)[0])); \ +} while (0) + +/** \brief Prepend v2 before v1. Result in v1. + @param V1 target vector + @param V2 vector to prepend +*/ + +#define vec_prepend(v1,v2) \ +do { \ + uword _v(l1) = vec_len (v1); \ + uword _v(l2) = vec_len (v2); \ + \ + v1 = _vec_resize ((v1), _v(l2), \ + (_v(l1) + _v(l2)) * sizeof ((v1)[0]), 0, 0); \ + memmove ((v1) + _v(l2), (v1), _v(l1) * sizeof ((v1)[0])); \ + clib_memcpy ((v1), (v2), _v(l2) * sizeof ((v2)[0])); \ +} while (0) + +/** \brief Prepend v2 before v1. Result in v1. Specified alignment + @param V1 target vector + @param V2 vector to prepend + @param align required alignment +*/ + +#define vec_prepend_aligned(v1,v2,align) \ +do { \ + uword _v(l1) = vec_len (v1); \ + uword _v(l2) = vec_len (v2); \ + \ + v1 = _vec_resize ((v1), _v(l2), \ + (_v(l1) + _v(l2)) * sizeof ((v1)[0]), 0, align); \ + memmove ((v1) + _v(l2), (v1), _v(l1) * sizeof ((v1)[0])); \ + clib_memcpy ((v1), (v2), _v(l2) * sizeof ((v2)[0])); \ +} while (0) + + +/** \brief Zero all vector elements. Null-pointer tolerant. + @param var Vector to zero +*/ +#define vec_zero(var) \ +do { \ + if (var) \ + memset ((var), 0, vec_len (var) * sizeof ((var)[0])); \ +} while (0) + +/** \brief Set all vector elements to given value. Null-pointer tolerant. + @param v vector to set + @param val value for each vector element +*/ +#define vec_set(v,val) \ +do { \ + word _v(i); \ + __typeof__ ((v)[0]) _val = (val); \ + for (_v(i) = 0; _v(i) < vec_len (v); _v(i)++) \ + (v)[_v(i)] = _val; \ +} while (0) + +#ifdef CLIB_UNIX +#include <stdlib.h> /* for qsort */ +#endif + +/** \brief Compare two vectors, not NULL-pointer tolerant + + @param v1 Pointer to a vector + @param v2 Pointer to a vector + @return 1 if equal, 0 if unequal +*/ +#define vec_is_equal(v1,v2) \ + (vec_len (v1) == vec_len (v2) && ! memcmp ((v1), (v2), vec_len (v1) * sizeof ((v1)[0]))) + +/** \brief Compare two vectors (only applicable to vectors of signed numbers). + Used in qsort compare functions. + + @param v1 Pointer to a vector + @param v2 Pointer to a vector + @return -1, 0, +1 +*/ +#define vec_cmp(v1,v2) \ +({ \ + word _v(i), _v(cmp), _v(l); \ + _v(l) = clib_min (vec_len (v1), vec_len (v2)); \ + _v(cmp) = 0; \ + for (_v(i) = 0; _v(i) < _v(l); _v(i)++) { \ + _v(cmp) = (v1)[_v(i)] - (v2)[_v(i)]; \ + if (_v(cmp)) \ + break; \ + } \ + if (_v(cmp) == 0 && _v(l) > 0) \ + _v(cmp) = vec_len(v1) - vec_len(v2); \ + (_v(cmp) < 0 ? -1 : (_v(cmp) > 0 ? +1 : 0)); \ +}) + +/** \brief Search a vector for the index of the entry that matches. + + @param v1 Pointer to a vector + @param v2 Entry to match + @return index of match or ~0 +*/ +#define vec_search(v,E) \ +({ \ + word _v(i) = 0; \ + while (_v(i) < vec_len(v)) \ + { \ + if ((v)[_v(i)] == E) \ + break; \ + _v(i)++; \ + } \ + if (_v(i) == vec_len(v)) \ + _v(i) = ~0; \ + _v(i); \ +}) + +/** \brief Sort a vector using the supplied element comparison function + + @param vec vector to sort + @param f comparison function +*/ +#define vec_sort_with_function(vec,f) \ +do { \ + qsort (vec, vec_len (vec), sizeof (vec[0]), (void *) (f)); \ +} while (0) + +/** \brief Make a vector containing a NULL terminated c-string. + + @param V (possibly NULL) pointer to a vector. + @param S pointer to string buffer. + @param L string length (NOT including the terminating NULL; a la strlen()) +*/ +#define vec_validate_init_c_string(V, S, L) \ + do { \ + vec_reset_length (V); \ + vec_validate ((V), (L)); \ + if ((S) && (L)) \ + clib_memcpy ((V), (S), (L)); \ + (V)[(L)] = 0; \ + } while (0) + + +/** \brief Test whether a vector is a NULL terminated c-string. + + @param V (possibly NULL) pointer to a vector. + @return BOOLEAN indicating if the vector c-string is null terminated. +*/ +#define vec_c_string_is_terminated(V) \ + (((V) != 0) && (vec_len (V) != 0) && ((V)[vec_len ((V)) - 1] == 0)) + +/** \brief (If necessary) NULL terminate a vector containing a c-string. + + @param V (possibly NULL) pointer to a vector. + @return V (value-result macro parameter) +*/ +#define vec_terminate_c_string(V) \ + do { \ + u32 vl = vec_len ((V)); \ + if (!vec_c_string_is_terminated(V)) \ + { \ + vec_validate ((V), vl); \ + (V)[vl] = 0; \ + } \ + } while (0) + +#endif /* included_vec_h */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vec_bootstrap.h b/src/vppinfra/vec_bootstrap.h new file mode 100644 index 00000000..3b8c7707 --- /dev/null +++ b/src/vppinfra/vec_bootstrap.h @@ -0,0 +1,201 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_vec_bootstrap_h +#define included_clib_vec_bootstrap_h + +/** \file + Vector bootsrap header file +*/ + +/* Bootstrap include so that #include <vppinfra/mem.h> can include e.g. + <vppinfra/mheap.h> which depends on <vppinfra/vec.h>. */ + +/** \brief vector header structure + + Bookeeping header preceding vector elements in memory. + User header information may preceed standard vec header. + If you change u32 len -> u64 len, single vectors can + exceed 2**32 elements. Clib heaps are vectors. */ + +typedef struct +{ +#if CLIB_VEC64 > 0 + u64 len; +#else + u32 len; /**< Number of elements in vector (NOT its allocated length). */ +#endif + u8 vector_data[0]; /**< Vector data . */ +} vec_header_t; + +/** \brief Find the vector header + + Given the user's pointer to a vector, find the corresponding + vector header + + @param v pointer to a vector + @return pointer to the vector's vector_header_t +*/ +#define _vec_find(v) ((vec_header_t *) (v) - 1) + +#define _vec_round_size(s) \ + (((s) + sizeof (uword) - 1) &~ (sizeof (uword) - 1)) + +always_inline uword +vec_header_bytes (uword header_bytes) +{ + return round_pow2 (header_bytes + sizeof (vec_header_t), + sizeof (vec_header_t)); +} + +/** \brief Find a user vector header + + Finds the user header of a vector with unspecified alignment given + the user pointer to the vector. +*/ + +always_inline void * +vec_header (void *v, uword header_bytes) +{ + return v - vec_header_bytes (header_bytes); +} + +/** \brief Find the end of user vector header + + Finds the end of the user header of a vector with unspecified + alignment given the user pointer to the vector. +*/ + +always_inline void * +vec_header_end (void *v, uword header_bytes) +{ + return v + vec_header_bytes (header_bytes); +} + +always_inline uword +vec_aligned_header_bytes (uword header_bytes, uword align) +{ + return round_pow2 (header_bytes + sizeof (vec_header_t), align); +} + +always_inline void * +vec_aligned_header (void *v, uword header_bytes, uword align) +{ + return v - vec_aligned_header_bytes (header_bytes, align); +} + +always_inline void * +vec_aligned_header_end (void *v, uword header_bytes, uword align) +{ + return v + vec_aligned_header_bytes (header_bytes, align); +} + + +/** \brief Number of elements in vector (lvalue-capable) + + _vec_len (v) does not check for null, but can be used as a lvalue + (e.g. _vec_len (v) = 99). +*/ + +#define _vec_len(v) (_vec_find(v)->len) + +/** \brief Number of elements in vector (rvalue-only, NULL tolerant) + + vec_len (v) checks for NULL, but cannot be used as an lvalue. + If in doubt, use vec_len... +*/ + +#define vec_len(v) ((v) ? _vec_len(v) : 0) + +/** \brief Reset vector length to zero + NULL-pointer tolerant +*/ + +#define vec_reset_length(v) do { if (v) _vec_len (v) = 0; } while (0) + +/** \brief Number of data bytes in vector. */ + +#define vec_bytes(v) (vec_len (v) * sizeof (v[0])) + +/** \brief Total number of bytes that can fit in vector with current allocation. */ + +#define vec_capacity(v,b) \ +({ \ + void * _vec_capacity_v = (void *) (v); \ + uword _vec_capacity_b = (b); \ + _vec_capacity_b = sizeof (vec_header_t) + _vec_round_size (_vec_capacity_b); \ + _vec_capacity_v ? clib_mem_size (_vec_capacity_v - _vec_capacity_b) : 0; \ +}) + +/** \brief Total number of elements that can fit into vector. */ +#define vec_max_len(v) (vec_capacity(v,0) / sizeof (v[0])) + +/** \brief End (last data address) of vector. */ +#define vec_end(v) ((v) + vec_len (v)) + +/** \brief True if given pointer is within given vector. */ +#define vec_is_member(v,e) ((e) >= (v) && (e) < vec_end (v)) + +/** \brief Get vector value at index i checking that i is in bounds. */ +#define vec_elt_at_index(v,i) \ +({ \ + ASSERT ((i) < vec_len (v)); \ + (v) + (i); \ +}) + +/** \brief Get vector value at index i */ +#define vec_elt(v,i) (vec_elt_at_index(v,i))[0] + +/** \brief Vector iterator */ +#define vec_foreach(var,vec) for (var = (vec); var < vec_end (vec); var++) + +/** \brief Vector iterator (reverse) */ +#define vec_foreach_backwards(var,vec) \ +for (var = vec_end (vec) - 1; var >= (vec); var--) + +/** \brief Iterate over vector indices. */ +#define vec_foreach_index(var,v) for ((var) = 0; (var) < vec_len (v); (var)++) + +#endif /* included_clib_vec_bootstrap_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vector.c b/src/vppinfra/vector.c new file mode 100644 index 00000000..68b4fdc2 --- /dev/null +++ b/src/vppinfra/vector.c @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/types.h> + +#if defined (__SSE2__) +u8 u32x4_compare_word_mask_table[256] = { + [0xf0] = (1 << 1), + [0x0f] = (1 << 0), + [0xff] = (1 << 0) | (1 << 1), +}; +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vector.h b/src/vppinfra/vector.h new file mode 100644 index 00000000..491e7cfe --- /dev/null +++ b/src/vppinfra/vector.h @@ -0,0 +1,268 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_vector_h +#define included_clib_vector_h + +#include <vppinfra/clib.h> + +/* Vector types. */ + +#if defined (__MMX__) || defined (__IWMMXT__) || defined (__aarch64__) +#define CLIB_HAVE_VEC64 +#endif + +#if defined (__SSE2__) && __GNUC__ >= 4 +#define CLIB_HAVE_VEC128 +#endif + +#if defined (__ALTIVEC__) +#define CLIB_HAVE_VEC128 +#endif + +/* 128 implies 64 */ +#ifdef CLIB_HAVE_VEC128 +#define CLIB_HAVE_VEC64 +#endif + +#define _vector_size(n) __attribute__ ((vector_size (n))) + +#if defined (__aarch64__) || defined (__arm__) +typedef unsigned int u32x4 _vector_size (16); +typedef u8 u8x16 _vector_size (16); +typedef u16 u16x8 _vector_size (16); +typedef u32 u32x4 _vector_size (16); +typedef u64 u64x2 _vector_size (16); +#endif + +#ifdef CLIB_HAVE_VEC64 +/* Signed 64 bit. */ +typedef char i8x8 _vector_size (8); +typedef short i16x4 _vector_size (8); +typedef int i32x2 _vector_size (8); + +/* Unsigned 64 bit. */ +typedef unsigned char u8x8 _vector_size (8); +typedef unsigned short u16x4 _vector_size (8); +typedef unsigned int u32x2 _vector_size (8); + +/* Floating point 64 bit. */ +typedef float f32x2 _vector_size (8); +#endif /* CLIB_HAVE_VEC64 */ + +#ifdef CLIB_HAVE_VEC128 +/* Signed 128 bit. */ +typedef i8 i8x16 _vector_size (16); +typedef i16 i16x8 _vector_size (16); +typedef i32 i32x4 _vector_size (16); +typedef long long i64x2 _vector_size (16); + +/* Unsigned 128 bit. */ +typedef u8 u8x16 _vector_size (16); +typedef u16 u16x8 _vector_size (16); +typedef u32 u32x4 _vector_size (16); +typedef u64 u64x2 _vector_size (16); + +typedef f32 f32x4 _vector_size (16); +typedef f64 f64x2 _vector_size (16); + +/* Signed 256 bit. */ +typedef i8 i8x32 _vector_size (32); +typedef i16 i16x16 _vector_size (32); +typedef i32 i32x8 _vector_size (32); +typedef long long i64x4 _vector_size (32); + +/* Unsigned 256 bit. */ +typedef u8 u8x32 _vector_size (32); +typedef u16 u16x16 _vector_size (32); +typedef u32 u32x8 _vector_size (32); +typedef u64 u64x4 _vector_size (32); + +typedef f32 f32x8 _vector_size (32); +typedef f64 f64x4 _vector_size (32); +#endif /* CLIB_HAVE_VEC128 */ + +/* Vector word sized types. */ +#ifndef CLIB_VECTOR_WORD_BITS +#ifdef CLIB_HAVE_VEC128 +#define CLIB_VECTOR_WORD_BITS 128 +#else +#define CLIB_VECTOR_WORD_BITS 64 +#endif +#endif /* CLIB_VECTOR_WORD_BITS */ + +/* Vector word sized types. */ +#if CLIB_VECTOR_WORD_BITS == 128 +typedef i8 i8x _vector_size (16); +typedef i16 i16x _vector_size (16); +typedef i32 i32x _vector_size (16); +typedef i64 i64x _vector_size (16); +typedef u8 u8x _vector_size (16); +typedef u16 u16x _vector_size (16); +typedef u32 u32x _vector_size (16); +typedef u64 u64x _vector_size (16); +#endif +#if CLIB_VECTOR_WORD_BITS == 64 +typedef i8 i8x _vector_size (8); +typedef i16 i16x _vector_size (8); +typedef i32 i32x _vector_size (8); +typedef i64 i64x _vector_size (8); +typedef u8 u8x _vector_size (8); +typedef u16 u16x _vector_size (8); +typedef u32 u32x _vector_size (8); +typedef u64 u64x _vector_size (8); +#endif + +#undef _vector_size + +#define VECTOR_WORD_TYPE(t) t##x +#define VECTOR_WORD_TYPE_LEN(t) (sizeof (VECTOR_WORD_TYPE(t)) / sizeof (t)) + +/* Union types. */ +#if (defined(CLIB_HAVE_VEC128) || defined(CLIB_HAVE_VEC64)) + +#define _(t) \ + typedef union { \ + t##x as_##t##x; \ + t as_##t[VECTOR_WORD_TYPE_LEN (t)]; \ + } t##x##_union_t; + +_(u8); +_(u16); +_(u32); +_(u64); +_(i8); +_(i16); +_(i32); +_(i64); + +#undef _ + +#endif + +#ifdef CLIB_HAVE_VEC64 + +#define _(t,n) \ + typedef union { \ + t##x##n as_##t##x##n; \ + t as_##t[n]; \ + } t##x##n##_union_t; \ + +_(u8, 8); +_(u16, 4); +_(u32, 2); +_(i8, 8); +_(i16, 4); +_(i32, 2); + +#undef _ + +#endif + +#ifdef CLIB_HAVE_VEC128 + +#define _(t,n) \ + typedef union { \ + t##x##n as_##t##x##n; \ + t as_##t[n]; \ + } t##x##n##_union_t; \ + +_(u8, 16); +_(u16, 8); +_(u32, 4); +_(u64, 2); +_(i8, 16); +_(i16, 8); +_(i32, 4); +_(i64, 2); +_(f32, 4); +_(f64, 2); + +#undef _ + +#endif + +/* When we don't have vector types, still define e.g. u32x4_union_t but as an array. */ +#if !defined(CLIB_HAVE_VEC128) && !defined(CLIB_HAVE_VEC64) + +#define _(t,n) \ + typedef union { \ + t as_##t[n]; \ + } t##x##n##_union_t; \ + +_(u8, 16); +_(u16, 8); +_(u32, 4); +_(u64, 2); +_(i8, 16); +_(i16, 8); +_(i32, 4); +_(i64, 2); + +#undef _ + +#endif + +#if defined (__SSE2__) && __GNUC__ >= 4 +#include <vppinfra/vector_sse2.h> +#endif + +#if defined (__ALTIVEC__) +#include <vppinfra/vector_altivec.h> +#endif + +#if defined (__IWMMXT__) +#include <vppinfra/vector_iwmmxt.h> +#endif + +#if defined (__aarch64__) +#include <vppinfra/vector_neon.h> +#endif + +#if (defined(CLIB_HAVE_VEC128) || defined(CLIB_HAVE_VEC64)) +#include <vppinfra/vector_funcs.h> +#endif + +#endif /* included_clib_vector_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vector_altivec.h b/src/vppinfra/vector_altivec.h new file mode 100644 index 00000000..0e9de820 --- /dev/null +++ b/src/vppinfra/vector_altivec.h @@ -0,0 +1,178 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2009 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_vector_altivec_h +#define included_vector_altivec_h + +/* Splats. */ +#define _(t,n,ti,fi,tr,fr) \ + always_inline t##x##n t##x##n##_splat (t v) \ + { return (t##x##n) __builtin_altivec_##fi ((ti) v); } \ + \ + always_inline t##x##n t##x##n##_splat_word (t##x##n x, int word_index) \ + { return (t##x##n) __builtin_altivec_##fr ((tr) x, word_index); } + +#define u16x8_splat(i) ((u16x8) __builtin_altivec_vspltish (i)) +#define i16x8_splat(i) ((i16x8) __builtin_altivec_vspltish (i)) +#define u32x4_splat(i) ((u32x4) __builtin_altivec_vspltisw (i)) +#define i32x4_splat(i) ((i32x4) __builtin_altivec_vspltisw (i)) + +#define u16x8_splat_word(x,i) ((u16x8) __builtin_altivec_vsplth ((i16x8) (x), (i))) +#define i16x8_splat_word(x,i) ((i16x8) __builtin_altivec_vsplth ((i16x8) (x), (i))) +#define u32x4_splat_word(x,i) ((u32x4) __builtin_altivec_vspltw ((i32x4) (x), (i))) +#define i32x4_splat_word(x,i) ((i32x4) __builtin_altivec_vspltw ((i32x4) (x), (i))) + +#undef _ + +/* 128 bit shifts. */ +#define _(t,ti,lr,f) \ + always_inline t t##_##lr (t x, t y) \ + { return (t) __builtin_altivec_##f ((ti) x, (ti) y); } \ + \ + always_inline t t##_i##lr (t x, int i) \ + { \ + t j = {i,i,i,i}; \ + return t##_##lr (x, j); \ + } + +_(u16x8, i16x8, shift_left, vslh); +_(u32x4, i32x4, shift_left, vslw); +_(u16x8, i16x8, shift_right, vsrh); +_(u32x4, i32x4, shift_right, vsrw); +_(i16x8, i16x8, shift_right, vsrah); +_(i32x4, i32x4, shift_right, vsraw); +_(u16x8, i16x8, rotate_left, vrlh); +_(i16x8, i16x8, rotate_left, vrlh); +_(u32x4, i32x4, rotate_left, vrlw); +_(i32x4, i32x4, rotate_left, vrlw); + +#undef _ + +#define _(t,it,lr,f) \ + always_inline t t##_word_shift_##lr (t x, int n_words) \ + { \ + i32x4 n_bits = {0,0,0,n_words * BITS (it)}; \ + return (t) __builtin_altivec_##f ((i32x4) x, n_bits); \ + } + +_(u32x4, u32, left, vslo) +_(i32x4, i32, left, vslo) +_(u32x4, u32, right, vsro) +_(i32x4, i32, right, vsro) +_(u16x8, u16, left, vslo) +_(i16x8, i16, left, vslo) +_(u16x8, u16, right, vsro) _(i16x8, i16, right, vsro) +#undef _ + always_inline + u32 + u32x4_get0 (u32x4 x) +{ + u32x4_union_t y; + y.as_u32x4 = x; + return y.as_u32[3]; +} + +/* Interleave. */ +#define _(t,it,lh,f) \ + always_inline t t##_interleave_##lh (t x, t y) \ + { return (t) __builtin_altivec_##f ((it) x, (it) y); } + +_(u32x4, i32x4, lo, vmrglw) +_(i32x4, i32x4, lo, vmrglw) +_(u16x8, i16x8, lo, vmrglh) +_(i16x8, i16x8, lo, vmrglh) +_(u32x4, i32x4, hi, vmrghw) +_(i32x4, i32x4, hi, vmrghw) +_(u16x8, i16x8, hi, vmrghh) _(i16x8, i16x8, hi, vmrghh) +#undef _ +/* Unaligned loads/stores. */ +#ifndef __cplusplus +#define _(t) \ + always_inline void t##_store_unaligned (t x, t * a) \ + { clib_mem_unaligned (a, t) = x; } \ + always_inline t t##_load_unaligned (t * a) \ + { return clib_mem_unaligned (a, t); } + _(u8x16) _(u16x8) _(u32x4) _(u64x2) _(i8x16) _(i16x8) _(i32x4) _(i64x2) +#undef _ +#endif +#define _signed_binop(n,m,f,g) \ + /* Unsigned */ \ + always_inline u##n##x##m \ + u##n##x##m##_##f (u##n##x##m x, u##n##x##m y) \ + { return (u##n##x##m) __builtin_altivec_##g ((i##n##x##m) x, (i##n##x##m) y); } \ + \ + /* Signed */ \ + always_inline i##n##x##m \ + i##n##x##m##_##f (i##n##x##m x, i##n##x##m y) \ + { return (i##n##x##m) __builtin_altivec_##g ((i##n##x##m) x, (i##n##x##m) y); } +/* Compare operations. */ + _signed_binop (16, 8, is_equal, vcmpequh) +_signed_binop (32, 4, is_equal, vcmpequw) +#undef _signed_binop + always_inline u16x8 u16x8_is_zero (u16x8 x) +{ + u16x8 zero = { 0 }; + return u16x8_is_equal (x, zero); +} + +always_inline u32x4 +u32x4_is_zero (u32x4 x) +{ + u32x4 zero = { 0 }; + return u32x4_is_equal (x, zero); +} + +always_inline u32 +u32x4_zero_byte_mask (u32x4 x) +{ + u32x4 cmp = u32x4_is_zero (x); + u32x4 tmp = { 0x000f, 0x00f0, 0x0f00, 0xf000, }; + cmp &= tmp; + cmp |= u32x4_word_shift_right (cmp, 2); + cmp |= u32x4_word_shift_right (cmp, 1); + return u32x4_get0 (cmp); +} + +#endif /* included_vector_altivec_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vector_funcs.h b/src/vppinfra/vector_funcs.h new file mode 100644 index 00000000..db09de0f --- /dev/null +++ b/src/vppinfra/vector_funcs.h @@ -0,0 +1,334 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2008 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_vector_funcs_h +#define included_vector_funcs_h + +#include <vppinfra/byte_order.h> + +/* Addition/subtraction. */ +#if CLIB_VECTOR_WORD_BITS == 128 +#define u8x_add u8x16_add +#define u16x_add u16x8_add +#define u32x_add u32x4_add +#define u64x_add u64x2_add +#define i8x_add i8x16_add +#define i16x_add i16x8_add +#define i32x_add i32x4_add +#define i64x_add i64x2_add +#define u8x_sub u8x16_sub +#define u16x_sub u16x8_sub +#define u32x_sub u32x4_sub +#define u64x_sub u64x2_sub +#define i8x_sub i8x16_sub +#define i16x_sub i16x8_sub +#define i32x_sub i32x4_sub +#define i64x_sub i64x2_sub +#endif + +#if CLIB_VECTOR_WORD_BITS == 64 +#define u8x_add u8x8_add +#define u16x_add u16x4_add +#define u32x_add u32x2_add +#define i8x_add i8x8_add +#define i16x_add i16x4_add +#define i32x_add i32x2_add +#define u8x_sub u8x8_sub +#define u16x_sub u16x4_sub +#define u32x_sub u32x2_sub +#define i8x_sub i8x8_sub +#define i16x_sub i16x4_sub +#define i32x_sub i32x2_sub +#endif + +/* Saturating addition/subtraction. */ +#if CLIB_VECTOR_WORD_BITS == 128 +#define u8x_add_saturate u8x16_add_saturate +#define u16x_add_saturate u16x8_add_saturate +#define i8x_add_saturate i8x16_add_saturate +#define i16x_add_saturate i16x8_add_saturate +#define u8x_sub_saturate u8x16_sub_saturate +#define u16x_sub_saturate u16x8_sub_saturate +#define i8x_sub_saturate i8x16_sub_saturate +#define i16x_sub_saturate i16x8_sub_saturate +#endif + +#if CLIB_VECTOR_WORD_BITS == 64 +#define u8x_add_saturate u8x8_add_saturate +#define u16x_add_saturate u16x4_add_saturate +#define i8x_add_saturate i8x8_add_saturate +#define i16x_add_saturate i16x4_add_saturate +#define u8x_sub_saturate u8x8_sub_saturate +#define u16x_sub_saturate u16x4_sub_saturate +#define i8x_sub_saturate i8x8_sub_saturate +#define i16x_sub_saturate i16x4_sub_saturate +#endif + +#define _vector_interleave(a,b,t) \ +do { \ + t _tmp_lo = t##_interleave_lo (a, b); \ + t _tmp_hi = t##_interleave_hi (a, b); \ + if (CLIB_ARCH_IS_LITTLE_ENDIAN) \ + (a) = _tmp_lo, (b) = _tmp_hi; \ + else \ + (a) = _tmp_hi, (b) = _tmp_lo; \ +} while (0) + +/* 128 bit interleaves. */ +#define u8x16_interleave(a,b) _vector_interleave(a,b,u8x16) +#define i8x16_interleave(a,b) _vector_interleave(a,b,i8x16) +#define u16x8_interleave(a,b) _vector_interleave(a,b,u16x8) +#define i16x8_interleave(a,b) _vector_interleave(a,b,i16x8) +#define u32x4_interleave(a,b) _vector_interleave(a,b,u32x4) +#define i32x4_interleave(a,b) _vector_interleave(a,b,i32x4) +#define u64x2_interleave(a,b) _vector_interleave(a,b,u64x2) +#define i64x2_interleave(a,b) _vector_interleave(a,b,i64x2) + +/* 64 bit interleaves. */ +#define u8x8_interleave(a,b) _vector_interleave(a,b,u8x8) +#define i8x8_interleave(a,b) _vector_interleave(a,b,i8x8) +#define u16x4_interleave(a,b) _vector_interleave(a,b,u16x4) +#define i16x4_interleave(a,b) _vector_interleave(a,b,i16x4) +#define u32x2_interleave(a,b) _vector_interleave(a,b,u32x2) +#define i32x2_interleave(a,b) _vector_interleave(a,b,i32x2) + +/* Word sized interleaves. */ +#if CLIB_VECTOR_WORD_BITS == 128 +#define u8x_interleave u8x16_interleave +#define u16x_interleave u16x8_interleave +#define u32x_interleave u32x4_interleave +#define u64x_interleave u64x2_interleave +#endif + +#if CLIB_VECTOR_WORD_BITS == 64 +#define u8x_interleave u8x8_interleave +#define u16x_interleave u16x4_interleave +#define u32x_interleave u32x2_interleave +#define u64x_interleave(a,b) /* do nothing */ +#endif + +/* Vector word sized shifts. */ +#if CLIB_VECTOR_WORD_BITS == 128 +#define u8x_shift_left u8x16_shift_left +#define i8x_shift_left i8x16_shift_left +#define u16x_shift_left u16x8_shift_left +#define i16x_shift_left i16x8_shift_left +#define u32x_shift_left u32x4_shift_left +#define i32x_shift_left i32x4_shift_left +#define u64x_shift_left u64x2_shift_left +#define i64x_shift_left i64x2_shift_left +#define u8x_shift_right u8x16_shift_right +#define i8x_shift_right i8x16_shift_right +#define u16x_shift_right u16x8_shift_right +#define i16x_shift_right i16x8_shift_right +#define u32x_shift_right u32x4_shift_right +#define i32x_shift_right i32x4_shift_right +#define u64x_shift_right u64x2_shift_right +#define i64x_shift_right i64x2_shift_right +#define u8x_rotate_left u8x16_rotate_left +#define i8x_rotate_left i8x16_rotate_left +#define u16x_rotate_left u16x8_rotate_left +#define i16x_rotate_left i16x8_rotate_left +#define u32x_rotate_left u32x4_rotate_left +#define i32x_rotate_left i32x4_rotate_left +#define u64x_rotate_left u64x2_rotate_left +#define i64x_rotate_left i64x2_rotate_left +#define u8x_rotate_right u8x16_rotate_right +#define i8x_rotate_right i8x16_rotate_right +#define u16x_rotate_right u16x8_rotate_right +#define i16x_rotate_right i16x8_rotate_right +#define u32x_rotate_right u32x4_rotate_right +#define i32x_rotate_right i32x4_rotate_right +#define u64x_rotate_right u64x2_rotate_right +#define i64x_rotate_right i64x2_rotate_right +#define u8x_ishift_left u8x16_ishift_left +#define i8x_ishift_left i8x16_ishift_left +#define u16x_ishift_left u16x8_ishift_left +#define i16x_ishift_left i16x8_ishift_left +#define u32x_ishift_left u32x4_ishift_left +#define i32x_ishift_left i32x4_ishift_left +#define u64x_ishift_left u64x2_ishift_left +#define i64x_ishift_left i64x2_ishift_left +#define u8x_ishift_right u8x16_ishift_right +#define i8x_ishift_right i8x16_ishift_right +#define u16x_ishift_right u16x8_ishift_right +#define i16x_ishift_right i16x8_ishift_right +#define u32x_ishift_right u32x4_ishift_right +#define i32x_ishift_right i32x4_ishift_right +#define u64x_ishift_right u64x2_ishift_right +#define i64x_ishift_right i64x2_ishift_right +#define u8x_irotate_left u8x16_irotate_left +#define i8x_irotate_left i8x16_irotate_left +#define u16x_irotate_left u16x8_irotate_left +#define i16x_irotate_left i16x8_irotate_left +#define u32x_irotate_left u32x4_irotate_left +#define i32x_irotate_left i32x4_irotate_left +#define u64x_irotate_left u64x2_irotate_left +#define i64x_irotate_left i64x2_irotate_left +#define u8x_irotate_right u8x16_irotate_right +#define i8x_irotate_right i8x16_irotate_right +#define u16x_irotate_right u16x8_irotate_right +#define i16x_irotate_right i16x8_irotate_right +#define u32x_irotate_right u32x4_irotate_right +#define i32x_irotate_right i32x4_irotate_right +#define u64x_irotate_right u64x2_irotate_right +#define i64x_irotate_right i64x2_irotate_right +#endif + +#if CLIB_VECTOR_WORD_BITS == 64 +#define u8x_shift_left u8x8_shift_left +#define i8x_shift_left i8x8_shift_left +#define u16x_shift_left u16x4_shift_left +#define i16x_shift_left i16x4_shift_left +#define u32x_shift_left u32x2_shift_left +#define i32x_shift_left i32x2_shift_left +#define u8x_shift_right u8x8_shift_right +#define i8x_shift_right i8x8_shift_right +#define u16x_shift_right u16x4_shift_right +#define i16x_shift_right i16x4_shift_right +#define u32x_shift_right u32x2_shift_right +#define i32x_shift_right i32x2_shift_right +#define u8x_rotate_left u8x8_rotate_left +#define i8x_rotate_left i8x8_rotate_left +#define u16x_rotate_left u16x4_rotate_left +#define i16x_rotate_left i16x4_rotate_left +#define u32x_rotate_left u32x2_rotate_left +#define i32x_rotate_left i32x2_rotate_left +#define u8x_rotate_right u8x8_rotate_right +#define i8x_rotate_right i8x8_rotate_right +#define u16x_rotate_right u16x4_rotate_right +#define i16x_rotate_right i16x4_rotate_right +#define u32x_rotate_right u32x2_rotate_right +#define i32x_rotate_right i32x2_rotate_right +#define u8x_ishift_left u8x8_ishift_left +#define i8x_ishift_left i8x8_ishift_left +#define u16x_ishift_left u16x4_ishift_left +#define i16x_ishift_left i16x4_ishift_left +#define u32x_ishift_left u32x2_ishift_left +#define i32x_ishift_left i32x2_ishift_left +#define u8x_ishift_right u8x8_ishift_right +#define i8x_ishift_right i8x8_ishift_right +#define u16x_ishift_right u16x4_ishift_right +#define i16x_ishift_right i16x4_ishift_right +#define u32x_ishift_right u32x2_ishift_right +#define i32x_ishift_right i32x2_ishift_right +#define u8x_irotate_left u8x8_irotate_left +#define i8x_irotate_left i8x8_irotate_left +#define u16x_irotate_left u16x4_irotate_left +#define i16x_irotate_left i16x4_irotate_left +#define u32x_irotate_left u32x2_irotate_left +#define i32x_irotate_left i32x2_irotate_left +#define u8x_irotate_right u8x8_irotate_right +#define i8x_irotate_right i8x8_irotate_right +#define u16x_irotate_right u16x4_irotate_right +#define i16x_irotate_right i16x4_irotate_right +#define u32x_irotate_right u32x2_irotate_right +#define i32x_irotate_right i32x2_irotate_right +#endif + +#if CLIB_VECTOR_WORD_BITS == 128 +#define u8x_splat u8x16_splat +#define i8x_splat i8x16_splat +#define u16x_splat u16x8_splat +#define i16x_splat i16x8_splat +#define u32x_splat u32x4_splat +#define i32x_splat i32x4_splat +#define u64x_splat u64x2_splat +#define i64x_splat i64x2_splat +#endif + +#if CLIB_VECTOR_WORD_BITS == 64 +#define u8x_splat u8x8_splat +#define i8x_splat i8x8_splat +#define u16x_splat u16x4_splat +#define i16x_splat i16x4_splat +#define u32x_splat u32x2_splat +#define i32x_splat i32x2_splat +#endif + +#define u32x4_transpose_step(x,y) \ +do { \ + u32x4 _x = (x); \ + u32x4 _y = (y); \ + (x) = u32x4_interleave_lo (_x, _y); \ + (y) = u32x4_interleave_hi (_x, _y); \ +} while (0) + +/* 4x4 transpose: x_ij -> x_ji */ +#define u32x4_transpose(x0,x1,x2,x3) \ +do { \ + u32x4 _x0 = (u32x4) (x0); \ + u32x4 _x1 = (u32x4) (x1); \ + u32x4 _x2 = (u32x4) (x2); \ + u32x4 _x3 = (u32x4) (x3); \ + u32x4_transpose_step (_x0, _x2); \ + u32x4_transpose_step (_x1, _x3); \ + u32x4_transpose_step (_x0, _x1); \ + u32x4_transpose_step (_x2, _x3); \ + (x0) = (u32x4) _x0; \ + (x1) = (u32x4) _x1; \ + (x2) = (u32x4) _x2; \ + (x3) = (u32x4) _x3; \ +} while (0) + +#define i32x4_transpose(x0,x1,x2,x3) \ +do { \ + u32x4 _x0 = (u32x4) (x0); \ + u32x4 _x1 = (u32x4) (x1); \ + u32x4 _x2 = (u32x4) (x2); \ + u32x4 _x3 = (u32x4) (x3); \ + u32x4_transpose_step (_x0, _x2); \ + u32x4_transpose_step (_x1, _x3); \ + u32x4_transpose_step (_x0, _x1); \ + u32x4_transpose_step (_x2, _x3); \ + (x0) = (i32x4) _x0; \ + (x1) = (i32x4) _x1; \ + (x2) = (i32x4) _x2; \ + (x3) = (i32x4) _x3; \ +} while (0) + +#undef _ + +#endif /* included_vector_funcs_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vector_iwmmxt.h b/src/vppinfra/vector_iwmmxt.h new file mode 100644 index 00000000..8e662045 --- /dev/null +++ b/src/vppinfra/vector_iwmmxt.h @@ -0,0 +1,149 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2008 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_vector_iwmmxt_h +#define included_vector_iwmmxt_h + +#include <vppinfra/error.h> /* for ASSERT */ + +/* 64 bit interleaves. */ +always_inline u8x8 +u8x8_interleave_hi (u8x8 a, u8x8 b) +{ + return __builtin_arm_wunpckihb (a, b); +} + +always_inline u8x8 +u8x8_interleave_lo (u8x8 a, u8x8 b) +{ + return __builtin_arm_wunpckilb (a, b); +} + +always_inline u16x4 +u16x4_interleave_hi (u16x4 a, u16x4 b) +{ + return __builtin_arm_wunpckihh (a, b); +} + +always_inline u16x4 +u16x4_interleave_lo (u16x4 a, u16x4 b) +{ + return __builtin_arm_wunpckilh (a, b); +} + +always_inline u32x2 +u32x2_interleave_hi (u32x2 a, u32x2 b) +{ + return __builtin_arm_wunpckihw (a, b); +} + +always_inline u32x2 +u32x2_interleave_lo (u32x2 a, u32x2 b) +{ + return __builtin_arm_wunpckilw (a, b); +} + +always_inline u32x2 +u32x2_splat (u32 a) +{ + u32x2 x = { a }; + x = u32x2_interleave_lo (x, x); + return x; +} + +always_inline u16x4 +u16x4_splat (u16 a) +{ + u32 t = (u32) a | ((u32) a << 16); + return u32x2_splat (t); +} + +always_inline u8x8 +u8x8_splat (u8 a) +{ + u32 t = (u32) a | ((u32) a << 8); + t |= t << 16; + return u32x2_splat (t); +} + +#define i32x2_splat u32x2_splat +#define i16x4_splat u16x4_splat +#define i8x8_splat u8x8_splat + +/* 64 bit shifts. */ + +/* As of July 2008 the __builtin_arm shifts cause gcc-4.3.1 to crash + so we use asm versions. */ +#define _(t,u,lr,f) \ + always_inline t \ + t##_##lr (t x, int i) \ + { \ + i16x4 y; \ + asm (#f " %[y], %[x], %[shift]" \ + : [y] "=y" (y) \ + : [x] "y" (x), [shift] "i" (i * u)); \ + return y; \ + } + +_(u16x4, 1, shift_left, wsllhi) +_(u32x2, 1, shift_left, wsllwi) +_(u16x4, 1, shift_right, wsrlhi) +_(u32x2, 1, shift_right, wsrlwi) +_(i16x4, 1, shift_left, wsllhi) +_(i32x2, 1, shift_left, wsllwi) +_(i16x4, 1, shift_right, wsrahi) _(i32x2, 1, shift_right, wsrawi) +/* Word shifts. */ + _(u8x8, 8, word_shift_left, wslldi) +_(u16x4, 16, word_shift_left, wslldi) +_(u32x2, 32, word_shift_left, wslldi) +_(u8x8, 8, word_shift_right, wsrldi) +_(u16x4, 16, word_shift_right, wsrldi) +_(u32x2, 32, word_shift_right, wsrldi) +_(i8x8, 8, word_shift_left, wslldi) +_(i16x4, 16, word_shift_left, wslldi) +_(i32x2, 32, word_shift_left, wslldi) +_(i8x8, 8, word_shift_right, wsrldi) +_(i16x4, 16, word_shift_right, wsrldi) _(i32x2, 32, word_shift_right, wsrldi) +#undef _ +#endif /* included_vector_iwmmxt_h */ +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vector_neon.h b/src/vppinfra/vector_neon.h new file mode 100644 index 00000000..cea52759 --- /dev/null +++ b/src/vppinfra/vector_neon.h @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef included_vector_neon_h +#define included_vector_neon_h +#include <arm_neon.h> + +/* Splats. */ + +#define u8x16_splat(i) vdupq_n_u8(i) +#define u16x8_splat(i) vdupq_n_u16(i) +#define i16x8_splat(i) vdupq_n_s16(i) +#define u32x4_splat(i) vdupq_n_u32(i) +#define i32x4_splat(i) vdupq_n_s32(i) + +/* Arithmetic */ +#define u16x8_add(a,b) vaddq_u16(a,b) +#define i16x8_add(a,b) vaddq_s16(a,b) +#define u16x8_sub_saturate(a,b) vsubq_u16(a,b) +#define i16x8_sub_saturate(a,b) vsubq_s16(a,b) + +#define u16x8_is_equal(a,b) vceqq_u16(a,b) +#define i16x8_is_equal(a,b) vceqq_i16(a,b) + +always_inline u32 +u16x8_zero_byte_mask (u16x8 input) +{ + u8x16 vall_one = vdupq_n_u8 (0x0); + u8x16 res_values = { 0x01, 0x02, 0x04, 0x08, + 0x10, 0x20, 0x40, 0x80, + 0x01, 0x02, 0x04, 0x08, + 0x10, 0x20, 0x40, 0x80 + }; + + /* input --> [0x80, 0x40, 0x01, 0xf0, ... ] */ + u8x16 test_result = + vreinterpretq_u8_u16 (vceqq_u16 (input, vreinterpretq_u16_u8 (vall_one))); + u8x16 before_merge = vminq_u8 (test_result, res_values); + /*before_merge--> [0x80, 0x00, 0x00, 0x10, ... ] */ + /* u8x16 --> [a,b,c,d, e,f,g,h, i,j,k,l, m,n,o,p] */ + /* pair add until we have 2 uint64_t */ + u16x8 merge1 = vpaddlq_u8 (before_merge); + /* u16x8--> [a+b,c+d, e+f,g+h, i+j,k+l, m+n,o+p] */ + u32x4 merge2 = vpaddlq_u16 (merge1); + /* u32x4--> [a+b+c+d, e+f+g+h, i+j+k+l, m+n+o+p] */ + u64x2 merge3 = vpaddlq_u32 (merge2); + /* u64x2--> [a+b+c+d+e+f+g+h, i+j+k+l+m+n+o+p] */ + return (u32) (vgetq_lane_u64 (merge3, 1) << 8) + vgetq_lane_u64 (merge3, 0); +} + +#endif /* included_vector_neon_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vector_sse2.h b/src/vppinfra/vector_sse2.h new file mode 100644 index 00000000..6830d5c6 --- /dev/null +++ b/src/vppinfra/vector_sse2.h @@ -0,0 +1,705 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_vector_sse2_h +#define included_vector_sse2_h + +#include <vppinfra/error_bootstrap.h> /* for ASSERT */ +#include <x86intrin.h> + +/* 128 bit interleaves. */ +always_inline u8x16 +u8x16_interleave_hi (u8x16 a, u8x16 b) +{ + return (u8x16) _mm_unpackhi_epi8 ((__m128i) a, (__m128i) b); +} + +always_inline u8x16 +u8x16_interleave_lo (u8x16 a, u8x16 b) +{ + return (u8x16) _mm_unpacklo_epi8 ((__m128i) a, (__m128i) b); +} + +always_inline u16x8 +u16x8_interleave_hi (u16x8 a, u16x8 b) +{ + return (u16x8) _mm_unpackhi_epi16 ((__m128i) a, (__m128i) b); +} + +always_inline u16x8 +u16x8_interleave_lo (u16x8 a, u16x8 b) +{ + return (u16x8) _mm_unpacklo_epi16 ((__m128i) a, (__m128i) b); +} + +always_inline u32x4 +u32x4_interleave_hi (u32x4 a, u32x4 b) +{ + return (u32x4) _mm_unpackhi_epi32 ((__m128i) a, (__m128i) b); +} + +always_inline u32x4 +u32x4_interleave_lo (u32x4 a, u32x4 b) +{ + return (u32x4) _mm_unpacklo_epi32 ((__m128i) a, (__m128i) b); +} + +always_inline u64x2 +u64x2_interleave_hi (u64x2 a, u64x2 b) +{ + return (u64x2) _mm_unpackhi_epi64 ((__m128i) a, (__m128i) b); +} + +always_inline u64x2 +u64x2_interleave_lo (u64x2 a, u64x2 b) +{ + return (u64x2) _mm_unpacklo_epi64 ((__m128i) a, (__m128i) b); +} + +/* 64 bit interleaves. */ +always_inline u8x8 +u8x8_interleave_hi (u8x8 a, u8x8 b) +{ + return (u8x8) _m_punpckhbw ((__m64) a, (__m64) b); +} + +always_inline u8x8 +u8x8_interleave_lo (u8x8 a, u8x8 b) +{ + return (u8x8) _m_punpcklbw ((__m64) a, (__m64) b); +} + +always_inline u16x4 +u16x4_interleave_hi (u16x4 a, u16x4 b) +{ + return (u16x4) _m_punpckhwd ((__m64) a, (__m64) b); +} + +always_inline u16x4 +u16x4_interleave_lo (u16x4 a, u16x4 b) +{ + return (u16x4) _m_punpcklwd ((__m64) a, (__m64) b); +} + +always_inline u32x2 +u32x2_interleave_hi (u32x2 a, u32x2 b) +{ + return (u32x2) _m_punpckhdq ((__m64) a, (__m64) b); +} + +always_inline u32x2 +u32x2_interleave_lo (u32x2 a, u32x2 b) +{ + return (u32x2) _m_punpckldq ((__m64) a, (__m64) b); +} + +/* 128 bit packs. */ +always_inline u8x16 +u16x8_pack (u16x8 lo, u16x8 hi) +{ + return (u8x16) _mm_packus_epi16 ((__m128i) lo, (__m128i) hi); +} + +always_inline i8x16 +i16x8_pack (i16x8 lo, i16x8 hi) +{ + return (i8x16) _mm_packs_epi16 ((__m128i) lo, (__m128i) hi); +} + +always_inline u16x8 +u32x4_pack (u32x4 lo, u32x4 hi) +{ + return (u16x8) _mm_packs_epi32 ((__m128i) lo, (__m128i) hi); +} + +/* 64 bit packs. */ +always_inline u8x8 +u16x4_pack (u16x4 lo, u16x4 hi) +{ + return (u8x8) _m_packuswb ((__m64) lo, (__m64) hi); +} + +always_inline i8x8 +i16x4_pack (i16x4 lo, i16x4 hi) +{ + return (i8x8) _m_packsswb ((__m64) lo, (__m64) hi); +} + +always_inline u16x4 +u32x2_pack (u32x2 lo, u32x2 hi) +{ + return (u16x4) _m_packssdw ((__m64) lo, (__m64) hi); +} + +always_inline i16x4 +i32x2_pack (i32x2 lo, i32x2 hi) +{ + return (i16x4) _m_packssdw ((__m64) lo, (__m64) hi); +} + +/* Splats: replicate scalar value into vector. */ +always_inline u64x2 +u64x2_splat (u64 a) +{ + u64x2 x = { a, a }; + return x; +} + +always_inline u32x4 +u32x4_splat (u32 a) +{ + u32x4 x = { a, a, a, a }; + return x; +} + +always_inline u16x8 +u16x8_splat (u16 a) +{ + u16x8 x = { a, a, a, a, a, a, a, a }; + return x; +} + +always_inline u8x16 +u8x16_splat (u8 a) +{ + u8x16 x = { a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a }; + return x; +} + +always_inline u32x2 +u32x2_splat (u32 a) +{ + u32x2 x = { a, a }; + return x; +} + +always_inline u16x4 +u16x4_splat (u16 a) +{ + u16x4 x = { a, a, a, a }; + return x; +} + +always_inline u8x8 +u8x8_splat (u8 a) +{ + u8x8 x = { a, a, a, a, a, a, a, a }; + return x; +} + +#define i64x2_splat u64x2_splat +#define i32x4_splat u32x4_splat +#define i16x8_splat u16x8_splat +#define i8x16_splat u8x16_splat +#define i32x2_splat u32x2_splat +#define i16x4_splat u16x4_splat +#define i8x8_splat u8x8_splat + +#ifndef __ICC +always_inline u64x2 +u64x2_read_lo (u64x2 x, u64 * a) +{ + return (u64x2) _mm_loadl_pi ((__m128) x, (__m64 *) a); +} + +always_inline u64x2 +u64x2_read_hi (u64x2 x, u64 * a) +{ + return (u64x2) _mm_loadh_pi ((__m128) x, (__m64 *) a); +} + +always_inline void +u64x2_write_lo (u64x2 x, u64 * a) +{ + _mm_storel_pi ((__m64 *) a, (__m128) x); +} + +always_inline void +u64x2_write_hi (u64x2 x, u64 * a) +{ + _mm_storeh_pi ((__m64 *) a, (__m128) x); +} +#endif + +/* Unaligned loads/stores. */ + +#define _(t) \ + always_inline void t##_store_unaligned (t x, t * a) \ + { _mm_storeu_si128 ((__m128i *) a, (__m128i) x); } \ + always_inline t t##_load_unaligned (t * a) \ + { return (t) _mm_loadu_si128 ((__m128i *) a); } + +_(u8x16) _(u16x8) _(u32x4) _(u64x2) _(i8x16) _(i16x8) _(i32x4) _(i64x2) +#undef _ +#define _signed_binop(n,m,f,g) \ + /* Unsigned */ \ + always_inline u##n##x##m \ + u##n##x##m##_##f (u##n##x##m x, u##n##x##m y) \ + { return (u##n##x##m) _mm_##g##n ((__m128i) x, (__m128i) y); } \ + \ + /* Signed */ \ + always_inline i##n##x##m \ + i##n##x##m##_##f (i##n##x##m x, i##n##x##m y) \ + { return (i##n##x##m) _mm_##g##n ((__m128i) x, (__m128i) y); } +/* Addition/subtraction. */ + _signed_binop (8, 16, add, add_epi) +_signed_binop (16, 8, add, add_epi) +_signed_binop (32, 4, add, add_epi) +_signed_binop (64, 2, add, add_epi) +_signed_binop (8, 16, sub, sub_epi) +_signed_binop (16, 8, sub, sub_epi) +_signed_binop (32, 4, sub, sub_epi) _signed_binop (64, 2, sub, sub_epi) +/* Addition/subtraction with saturation. */ + _signed_binop (8, 16, add_saturate, adds_epu) +_signed_binop (16, 8, add_saturate, adds_epu) +_signed_binop (8, 16, sub_saturate, subs_epu) +_signed_binop (16, 8, sub_saturate, subs_epu) +/* Multiplication. */ + always_inline i16x8 i16x8_mul_lo (i16x8 x, i16x8 y) +{ + return (i16x8) _mm_mullo_epi16 ((__m128i) x, (__m128i) y); +} + +always_inline u16x8 +u16x8_mul_lo (u16x8 x, u16x8 y) +{ + return (u16x8) _mm_mullo_epi16 ((__m128i) x, (__m128i) y); +} + +always_inline i16x8 +i16x8_mul_hi (i16x8 x, i16x8 y) +{ + return (i16x8) _mm_mulhi_epu16 ((__m128i) x, (__m128i) y); +} + +always_inline u16x8 +u16x8_mul_hi (u16x8 x, u16x8 y) +{ + return (u16x8) _mm_mulhi_epu16 ((__m128i) x, (__m128i) y); +} + +/* 128 bit shifts. */ + +#define _(p,a,b,c,f) \ + always_inline p##a##x##b p##a##x##b##_ishift_##c (p##a##x##b x, int i) \ + { return (p##a##x##b) _mm_##f##i_epi##a ((__m128i) x, i); } \ + \ + always_inline p##a##x##b p##a##x##b##_shift_##c (p##a##x##b x, p##a##x##b y) \ + { return (p##a##x##b) _mm_##f##_epi##a ((__m128i) x, (__m128i) y); } + +_(u, 16, 8, left, sll) +_(u, 32, 4, left, sll) +_(u, 64, 2, left, sll) +_(u, 16, 8, right, srl) +_(u, 32, 4, right, srl) +_(u, 64, 2, right, srl) +_(i, 16, 8, left, sll) +_(i, 32, 4, left, sll) +_(i, 64, 2, left, sll) _(i, 16, 8, right, sra) _(i, 32, 4, right, sra) +#undef _ +/* 64 bit shifts. */ + always_inline u16x4 +u16x4_shift_left (u16x4 x, u16x4 i) +{ + return (u16x4) _m_psllw ((__m64) x, (__m64) i); +}; + +always_inline u32x2 +u32x2_shift_left (u32x2 x, u32x2 i) +{ + return (u32x2) _m_pslld ((__m64) x, (__m64) i); +}; + +always_inline u16x4 +u16x4_shift_right (u16x4 x, u16x4 i) +{ + return (u16x4) _m_psrlw ((__m64) x, (__m64) i); +}; + +always_inline u32x2 +u32x2_shift_right (u32x2 x, u32x2 i) +{ + return (u32x2) _m_psrld ((__m64) x, (__m64) i); +}; + +always_inline i16x4 +i16x4_shift_left (i16x4 x, i16x4 i) +{ + return (i16x4) _m_psllw ((__m64) x, (__m64) i); +}; + +always_inline i32x2 +i32x2_shift_left (i32x2 x, i32x2 i) +{ + return (i32x2) _m_pslld ((__m64) x, (__m64) i); +}; + +always_inline i16x4 +i16x4_shift_right (i16x4 x, i16x4 i) +{ + return (i16x4) _m_psraw ((__m64) x, (__m64) i); +}; + +always_inline i32x2 +i32x2_shift_right (i32x2 x, i32x2 i) +{ + return (i32x2) _m_psrad ((__m64) x, (__m64) i); +}; + +#define u8x16_word_shift_left(a,n) (u8x16) _mm_slli_si128((__m128i) a, n) +#define u8x16_word_shift_right(a,n) (u8x16) _mm_srli_si128((__m128i) a, n) + +#define i8x16_word_shift_left(a,n) \ + ((i8x16) u8x16_word_shift_left((u8x16) (a), (n))) +#define i8x16_word_shift_right(a,n) \ + ((i8x16) u8x16_word_shift_right((u8x16) (a), (n))) + +#define u16x8_word_shift_left(a,n) \ + ((u16x8) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u16))) +#define i16x8_word_shift_left(a,n) \ + ((u16x8) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u16))) +#define u16x8_word_shift_right(a,n) \ + ((u16x8) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u16))) +#define i16x8_word_shift_right(a,n) \ + ((i16x8) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u16))) + +#define u32x4_word_shift_left(a,n) \ + ((u32x4) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u32))) +#define i32x4_word_shift_left(a,n) \ + ((u32x4) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u32))) +#define u32x4_word_shift_right(a,n) \ + ((u32x4) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u32))) +#define i32x4_word_shift_right(a,n) \ + ((i32x4) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u32))) + +#define u64x2_word_shift_left(a,n) \ + ((u64x2) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u64))) +#define i64x2_word_shift_left(a,n) \ + ((u64x2) u8x16_word_shift_left((u8x16) (a), (n) * sizeof (u64))) +#define u64x2_word_shift_right(a,n) \ + ((u64x2) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u64))) +#define i64x2_word_shift_right(a,n) \ + ((i64x2) u8x16_word_shift_right((u8x16) (a), (n) * sizeof (u64))) + +/* SSE2 has no rotate instructions: use shifts to simulate them. */ +#define _(t,n,lr1,lr2) \ + always_inline t##x##n \ + t##x##n##_irotate_##lr1 (t##x##n w, int i) \ + { \ + ASSERT (i >= 0 && i <= BITS (t)); \ + return (t##x##n##_ishift_##lr1 (w, i) \ + | t##x##n##_ishift_##lr2 (w, BITS (t) - i)); \ + } \ + \ + always_inline t##x##n \ + t##x##n##_rotate_##lr1 (t##x##n w, t##x##n i) \ + { \ + t##x##n j = t##x##n##_splat (BITS (t)); \ + return (t##x##n##_shift_##lr1 (w, i) \ + | t##x##n##_shift_##lr2 (w, j - i)); \ + } + +_(u16, 8, left, right); +_(u16, 8, right, left); +_(u32, 4, left, right); +_(u32, 4, right, left); +_(u64, 2, left, right); +_(u64, 2, right, left); + +#undef _ + +#ifndef __clang__ +#define _(t,n,lr1,lr2) \ + always_inline t##x##n \ + t##x##n##_word_rotate2_##lr1 (t##x##n w0, t##x##n w1, int i) \ + { \ + int m = sizeof (t##x##n) / sizeof (t); \ + ASSERT (i >= 0 && i < m); \ + return (t##x##n##_word_shift_##lr1 (w0, i) \ + | t##x##n##_word_shift_##lr2 (w1, m - i)); \ + } \ + \ + always_inline t##x##n \ + t##x##n##_word_rotate_##lr1 (t##x##n w0, int i) \ + { return t##x##n##_word_rotate2_##lr1 (w0, w0, i); } + +_(u8, 16, left, right); +_(u8, 16, right, left); +_(u16, 8, left, right); +_(u16, 8, right, left); +_(u32, 4, left, right); +_(u32, 4, right, left); +_(u64, 2, left, right); +_(u64, 2, right, left); + +#undef _ +#endif + +/* Compare operations. */ +always_inline u8x16 +u8x16_is_equal (u8x16 x, u8x16 y) +{ + return (u8x16) _mm_cmpeq_epi8 ((__m128i) x, (__m128i) y); +} + +always_inline i8x16 +i8x16_is_equal (i8x16 x, i8x16 y) +{ + return (i8x16) _mm_cmpeq_epi8 ((__m128i) x, (__m128i) y); +} + +always_inline u16x8 +u16x8_is_equal (u16x8 x, u16x8 y) +{ + return (u16x8) _mm_cmpeq_epi16 ((__m128i) x, (__m128i) y); +} + +always_inline i16x8 +i16x8_is_equal (i16x8 x, i16x8 y) +{ + return (i16x8) _mm_cmpeq_epi16 ((__m128i) x, (__m128i) y); +} + +always_inline u32x4 +u32x4_is_equal (u32x4 x, u32x4 y) +{ + return (u32x4) _mm_cmpeq_epi32 ((__m128i) x, (__m128i) y); +} + +always_inline i32x4 +i32x4_is_equal (i32x4 x, i32x4 y) +{ + return (i32x4) _mm_cmpeq_epi32 ((__m128i) x, (__m128i) y); +} + +always_inline u8x16 +i8x16_is_greater (i8x16 x, i8x16 y) +{ + return (u8x16) _mm_cmpgt_epi8 ((__m128i) x, (__m128i) y); +} + +always_inline u16x8 +i16x8_is_greater (i16x8 x, i16x8 y) +{ + return (u16x8) _mm_cmpgt_epi16 ((__m128i) x, (__m128i) y); +} + +always_inline u32x4 +i32x4_is_greater (i32x4 x, i32x4 y) +{ + return (u32x4) _mm_cmpgt_epi32 ((__m128i) x, (__m128i) y); +} + +always_inline u8x16 +u8x16_is_zero (u8x16 x) +{ + u8x16 zero = { 0 }; + return u8x16_is_equal (x, zero); +} + +always_inline u16x8 +u16x8_is_zero (u16x8 x) +{ + u16x8 zero = { 0 }; + return u16x8_is_equal (x, zero); +} + +always_inline u32x4 +u32x4_is_zero (u32x4 x) +{ + u32x4 zero = { 0 }; + return u32x4_is_equal (x, zero); +} + +#define u32x4_select(A,MASK) \ +({ \ + u32x4 _x, _y; \ + _x = (A); \ + asm volatile ("pshufd %[mask], %[x], %[y]" \ + : /* outputs */ [y] "=x" (_y) \ + : /* inputs */ [x] "x" (_x), [mask] "i" (MASK)); \ + _y; \ +}) + +#define u32x4_splat_word(x,i) \ + u32x4_select ((x), (((i) << (2*0)) \ + | ((i) << (2*1)) \ + | ((i) << (2*2)) \ + | ((i) << (2*3)))) + +/* Extract low order 32 bit word. */ +always_inline u32 +u32x4_get0 (u32x4 x) +{ + u32 result; + asm volatile ("movd %[x], %[result]": /* outputs */ [result] "=r" (result) + : /* inputs */ [x] "x" (x)); + return result; +} + +always_inline u32x4 +u32x4_set0 (u32 x) +{ + u32x4 result; + asm volatile ("movd %[x], %[result]": /* outputs */ [result] "=x" (result) + : /* inputs */ [x] "r" (x)); + return result; +} + +always_inline i32x4 +i32x4_set0 (i32 x) +{ + return (i32x4) u32x4_set0 ((u32) x); +} + +always_inline i32 +i32x4_get0 (i32x4 x) +{ + return (i32) u32x4_get0 ((u32x4) x); +} + +/* Converts all ones/zeros compare mask to bitmap. */ +always_inline u32 +u8x16_compare_byte_mask (u8x16 x) +{ + return _mm_movemask_epi8 ((__m128i) x); +} + +extern u8 u32x4_compare_word_mask_table[256]; + +always_inline u32 +u32x4_compare_word_mask (u32x4 x) +{ + u32 m = u8x16_compare_byte_mask ((u8x16) x); + return (u32x4_compare_word_mask_table[(m >> 0) & 0xff] + | (u32x4_compare_word_mask_table[(m >> 8) & 0xff] << 2)); +} + +always_inline u32 +u8x16_zero_byte_mask (u8x16 x) +{ + u8x16 zero = { 0 }; + return u8x16_compare_byte_mask (u8x16_is_equal (x, zero)); +} + +always_inline u32 +u16x8_zero_byte_mask (u16x8 x) +{ + u16x8 zero = { 0 }; + return u8x16_compare_byte_mask ((u8x16) u16x8_is_equal (x, zero)); +} + +always_inline u32 +u32x4_zero_byte_mask (u32x4 x) +{ + u32x4 zero = { 0 }; + return u8x16_compare_byte_mask ((u8x16) u32x4_is_equal (x, zero)); +} + +always_inline u8x16 +u8x16_max (u8x16 x, u8x16 y) +{ + return (u8x16) _mm_max_epu8 ((__m128i) x, (__m128i) y); +} + +always_inline u32 +u8x16_max_scalar (u8x16 x) +{ + x = u8x16_max (x, u8x16_word_shift_right (x, 8)); + x = u8x16_max (x, u8x16_word_shift_right (x, 4)); + x = u8x16_max (x, u8x16_word_shift_right (x, 2)); + x = u8x16_max (x, u8x16_word_shift_right (x, 1)); + return _mm_extract_epi16 ((__m128i) x, 0) & 0xff; +} + +always_inline u8x16 +u8x16_min (u8x16 x, u8x16 y) +{ + return (u8x16) _mm_min_epu8 ((__m128i) x, (__m128i) y); +} + +always_inline u8 +u8x16_min_scalar (u8x16 x) +{ + x = u8x16_min (x, u8x16_word_shift_right (x, 8)); + x = u8x16_min (x, u8x16_word_shift_right (x, 4)); + x = u8x16_min (x, u8x16_word_shift_right (x, 2)); + x = u8x16_min (x, u8x16_word_shift_right (x, 1)); + return _mm_extract_epi16 ((__m128i) x, 0) & 0xff; +} + +always_inline i16x8 +i16x8_max (i16x8 x, i16x8 y) +{ + return (i16x8) _mm_max_epi16 ((__m128i) x, (__m128i) y); +} + +always_inline i16 +i16x8_max_scalar (i16x8 x) +{ + x = i16x8_max (x, i16x8_word_shift_right (x, 4)); + x = i16x8_max (x, i16x8_word_shift_right (x, 2)); + x = i16x8_max (x, i16x8_word_shift_right (x, 1)); + return _mm_extract_epi16 ((__m128i) x, 0); +} + +always_inline i16x8 +i16x8_min (i16x8 x, i16x8 y) +{ + return (i16x8) _mm_min_epi16 ((__m128i) x, (__m128i) y); +} + +always_inline i16 +i16x8_min_scalar (i16x8 x) +{ + x = i16x8_min (x, i16x8_word_shift_right (x, 4)); + x = i16x8_min (x, i16x8_word_shift_right (x, 2)); + x = i16x8_min (x, i16x8_word_shift_right (x, 1)); + return _mm_extract_epi16 ((__m128i) x, 0); +} + +#undef _signed_binop + +#endif /* included_vector_sse2_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vhash.c b/src/vppinfra/vhash.c new file mode 100644 index 00000000..f9dac0d9 --- /dev/null +++ b/src/vppinfra/vhash.c @@ -0,0 +1,772 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2010 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/vhash.h> + +#ifdef CLIB_HAVE_VEC128 + +/* Overflow search buckets have an extra u32x4 for saving key_hash data. + This makes it easier to refill main search bucket from overflow vector. */ +typedef struct +{ + /* 4 results for this bucket. */ + u32x4_union_t result; + + /* 4 hash codes for this bucket. These are used to refill main + search buckets from overflow buckets when space becomes available. */ + u32x4_union_t key_hash; + + /* n_key_u32s u32x4s of key data follow. */ + u32x4_union_t key[0]; +} vhash_overflow_search_bucket_t; + +always_inline void +set_overflow_result (vhash_overflow_search_bucket_t * b, + u32 i, u32 result, u32 key_hash) +{ + b->result.as_u32[i] = result; + b->key_hash.as_u32[i] = key_hash; +} + +always_inline void +free_overflow_bucket (vhash_overflow_buckets_t * ob, + vhash_overflow_search_bucket_t * b, u32 i) +{ + u32 o = (u32x4_union_t *) b - ob->search_buckets; + ASSERT (o < vec_len (ob->search_buckets)); + vec_add1 (ob->free_indices, 4 * o + i); +} + +always_inline vhash_overflow_search_bucket_t * +get_overflow_search_bucket (vhash_overflow_buckets_t * obs, u32 i, + u32 n_key_u32s) +{ + return ((vhash_overflow_search_bucket_t *) + vec_elt_at_index (obs->search_buckets, i)); +} + +always_inline vhash_overflow_search_bucket_t * +next_overflow_bucket (vhash_overflow_search_bucket_t * b, u32 n_key_u32s) +{ + return (vhash_overflow_search_bucket_t *) & b->key[n_key_u32s]; +} + +#define foreach_vhash_overflow_bucket(b,ob,n_key_u32s) \ + for ((b) = (vhash_overflow_search_bucket_t *) ob->search_buckets; \ + (u32x4_union_t *) (b) < vec_end (ob->search_buckets); \ + b = next_overflow_bucket (b, n_key_u32s)) + +u32 +vhash_get_overflow (vhash_t * h, u32 key_hash, u32 vi, u32 n_key_u32s) +{ + vhash_overflow_buckets_t *ob = vhash_get_overflow_buckets (h, key_hash); + vhash_overflow_search_bucket_t *b; + u32 i, result = 0; + + foreach_vhash_overflow_bucket (b, ob, n_key_u32s) + { + u32x4 r = b->result.as_u32x4; + + for (i = 0; i < n_key_u32s; i++) + r &= vhash_bucket_compare (h, &b->key[0], i, vi); + + result = vhash_merge_results (r); + if (result) + break; + } + + return result; +} + +u32 +vhash_set_overflow (vhash_t * h, + u32 key_hash, u32 vi, u32 new_result, u32 n_key_u32s) +{ + vhash_overflow_buckets_t *ob = vhash_get_overflow_buckets (h, key_hash); + vhash_overflow_search_bucket_t *b; + u32 i_set, i, old_result; + + foreach_vhash_overflow_bucket (b, ob, n_key_u32s) + { + u32x4 r; + + r = b->result.as_u32x4; + for (i = 0; i < n_key_u32s; i++) + r &= vhash_bucket_compare (h, &b->key[0], i, vi); + + old_result = vhash_merge_results (r); + if (old_result) + { + i_set = vhash_non_empty_result_index (r); + set_overflow_result (b, i_set, new_result, key_hash); + return old_result; + } + } + + /* Check free list. */ + if (vec_len (ob->free_indices) == 0) + { + /* Out of free overflow buckets. Resize. */ + u32 j, *p; + i = vec_len (ob->search_buckets); + vec_resize_aligned (ob->search_buckets, + sizeof (b[0]) / sizeof (u32x4) + n_key_u32s, + CLIB_CACHE_LINE_BYTES); + vec_add2 (ob->free_indices, p, 4); + for (j = 0; j < 4; j++) + p[j] = 4 * i + j; + } + + i = vec_pop (ob->free_indices); + + i_set = i & 3; + b = ((vhash_overflow_search_bucket_t *) + vec_elt_at_index (ob->search_buckets, i / 4)); + + /* Insert result. */ + set_overflow_result (b, i_set, new_result, key_hash); + + /* Insert key. */ + for (i = 0; i < n_key_u32s; i++) + b->key[i].as_u32[i_set] = vhash_get_key_word (h, i, vi); + + ob->n_overflow++; + h->n_elts++; + + return /* old result was invalid */ 0; +} + +u32 +vhash_unset_overflow (vhash_t * h, u32 key_hash, u32 vi, u32 n_key_u32s) +{ + vhash_overflow_buckets_t *ob = vhash_get_overflow_buckets (h, key_hash); + vhash_overflow_search_bucket_t *b; + u32 i_set, i, old_result; + + foreach_vhash_overflow_bucket (b, ob, n_key_u32s) + { + u32x4 r; + + r = b->result.as_u32x4; + for (i = 0; i < n_key_u32s; i++) + r &= vhash_bucket_compare (h, &b->key[0], i, vi); + + old_result = vhash_merge_results (r); + if (old_result) + { + i_set = vhash_non_empty_result_index (r); + + /* Invalidate result and invert key hash so that this will + never match since all keys in this overflow bucket have + matching key hashs. */ + set_overflow_result (b, i_set, 0, ~key_hash); + + free_overflow_bucket (ob, b, i_set); + + ASSERT (ob->n_overflow > 0); + ob->n_overflow--; + h->n_elts--; + return old_result; + } + } + + /* Could not find key. */ + return 0; +} + +void +vhash_unset_refill_from_overflow (vhash_t * h, + vhash_search_bucket_t * sb, + u32 key_hash, u32 n_key_u32s) +{ + vhash_overflow_buckets_t *obs = vhash_get_overflow_buckets (h, key_hash); + vhash_overflow_search_bucket_t *ob; + u32 i, j, i_refill, bucket_mask = h->bucket_mask.as_u32[0]; + + /* Find overflow element with matching key hash. */ + foreach_vhash_overflow_bucket (ob, obs, n_key_u32s) + { + for (i = 0; i < 4; i++) + { + if (!ob->result.as_u32[i]) + continue; + if ((ob->key_hash.as_u32[i] & bucket_mask) + != (key_hash & bucket_mask)) + continue; + + i_refill = vhash_empty_result_index (sb->result.as_u32x4); + sb->result.as_u32[i_refill] = ob->result.as_u32[i]; + for (j = 0; j < n_key_u32s; j++) + sb->key[j].as_u32[i_refill] = ob->key[j].as_u32[i]; + set_overflow_result (ob, i, 0, ~key_hash); + free_overflow_bucket (obs, ob, i); + return; + } + } +} + +void +vhash_init (vhash_t * h, u32 log2_n_keys, u32 n_key_u32, u32 * hash_seeds) +{ + uword i, j, m; + vhash_search_bucket_t *b; + + memset (h, 0, sizeof (h[0])); + + /* Must have at least 4 keys (e.g. one search bucket). */ + log2_n_keys = clib_max (log2_n_keys, 2); + + h->log2_n_keys = log2_n_keys; + h->n_key_u32 = n_key_u32; + m = pow2_mask (h->log2_n_keys) & ~3; + for (i = 0; i < VECTOR_WORD_TYPE_LEN (u32); i++) + h->bucket_mask.as_u32[i] = m; + + /* Allocate and zero search buckets. */ + i = (sizeof (b[0]) / sizeof (u32x4) + n_key_u32) << (log2_n_keys - 2); + vec_validate_aligned (h->search_buckets, i - 1, CLIB_CACHE_LINE_BYTES); + + for (i = 0; i < ARRAY_LEN (h->find_first_zero_table); i++) + h->find_first_zero_table[i] = min_log2 (first_set (~i)); + + for (i = 0; i < ARRAY_LEN (h->hash_seeds); i++) + for (j = 0; j < VECTOR_WORD_TYPE_LEN (u32); j++) + h->hash_seeds[i].as_u32[j] = hash_seeds[i]; +} + +static_always_inline u32 +vhash_main_key_gather (void *_vm, u32 vi, u32 wi, u32 n_key_u32) +{ + vhash_main_t *vm = _vm; + return vec_elt (vm->keys, vi * n_key_u32 + wi); +} + +static_always_inline u32x4 +vhash_main_4key_gather (void *_vm, u32 vi, u32 wi, u32 n_key_u32s) +{ + vhash_main_t *vm = _vm; + u32x4_union_t x; + + ASSERT (n_key_u32s == vm->n_key_u32); + ASSERT (wi < n_key_u32s); + + x.as_u32[0] = vec_elt (vm->keys, (vi + 0) * n_key_u32s + wi); + x.as_u32[1] = vec_elt (vm->keys, (vi + 1) * n_key_u32s + wi); + x.as_u32[2] = vec_elt (vm->keys, (vi + 2) * n_key_u32s + wi); + x.as_u32[3] = vec_elt (vm->keys, (vi + 3) * n_key_u32s + wi); + return x.as_u32x4; +} + +static_always_inline u32 +vhash_main_set_result (void *_vm, u32 vi, u32 old_result, u32 n_key_u32) +{ + vhash_main_t *vm = _vm; + u32 *p = vec_elt_at_index (vm->results, vi); + u32 new_result = p[0]; + p[0] = old_result; + return new_result; +} + +static_always_inline u32 +vhash_main_get_result (void *_vm, u32 vi, u32 old_result, u32 n_key_u32) +{ + vhash_main_t *vm = _vm; + vec_elt (vm->results, vi) = old_result; + return old_result; +} + +static_always_inline u32x4 +vhash_main_get_4result (void *_vm, u32 vi, u32x4 old_result, u32 n_key_u32) +{ + vhash_main_t *vm = _vm; + u32x4 *p = (u32x4 *) vec_elt_at_index (vm->results, vi); + p[0] = old_result; + return old_result; +} + +#define _(N_KEY_U32) \ + static_always_inline u32 \ + vhash_main_key_gather_##N_KEY_U32 (void * _vm, u32 vi, u32 i) \ + { return vhash_main_key_gather (_vm, vi, i, N_KEY_U32); } \ + \ + static_always_inline u32x4 \ + vhash_main_4key_gather_##N_KEY_U32 (void * _vm, u32 vi, u32 i) \ + { return vhash_main_4key_gather (_vm, vi, i, N_KEY_U32); } \ + \ + clib_pipeline_stage_static \ + (vhash_main_gather_keys_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_gather_4key_stage \ + (vm->vhash, \ + /* vector_index */ i, \ + vhash_main_4key_gather_##N_KEY_U32, \ + vm, \ + N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (vhash_main_gather_keys_mod_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_gather_key_stage \ + (vm->vhash, \ + /* vector_index */ vm->n_vectors_div_4, \ + /* n_vectors */ vm->n_vectors_mod_4, \ + vhash_main_key_gather_##N_KEY_U32, \ + vm, \ + N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage \ + (vhash_main_hash_finalize_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_finalize_stage (vm->vhash, i, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (vhash_main_hash_finalize_mod_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_finalize_stage (vm->vhash, vm->n_vectors_div_4, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_static \ + (vhash_main_get_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_get_4_stage (vm->vhash, \ + /* vector_index */ i, \ + vhash_main_get_4result, \ + vm, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (vhash_main_get_mod_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_get_stage (vm->vhash, \ + /* vector_index */ vm->n_vectors_div_4, \ + /* n_vectors */ vm->n_vectors_mod_4, \ + vhash_main_get_result, \ + vm, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_static \ + (vhash_main_set_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_set_stage (vm->vhash, \ + /* vector_index */ i, \ + /* n_vectors */ VECTOR_WORD_TYPE_LEN (u32), \ + vhash_main_set_result, \ + vm, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (vhash_main_set_mod_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_set_stage (vm->vhash, \ + /* vector_index */ vm->n_vectors_div_4, \ + /* n_vectors */ vm->n_vectors_mod_4, \ + vhash_main_set_result, \ + vm, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_static \ + (vhash_main_unset_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_unset_stage (vm->vhash, \ + /* vector_index */ i, \ + /* n_vectors */ VECTOR_WORD_TYPE_LEN (u32), \ + vhash_main_get_result, \ + vm, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (vhash_main_unset_mod_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_unset_stage (vm->vhash, \ + /* vector_index */ vm->n_vectors_div_4, \ + /* n_vectors */ vm->n_vectors_mod_4, \ + vhash_main_get_result, \ + vm, N_KEY_U32); \ + }) + +_(1); +_(2); +_(3); +_(4); +_(5); +_(6); + +#undef _ + +#define _(N_KEY_U32) \ + clib_pipeline_stage \ + (vhash_main_hash_mix_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_mix_stage (vm->vhash, i, N_KEY_U32); \ + }) \ + \ + clib_pipeline_stage_no_inline \ + (vhash_main_hash_mix_mod_stage_##N_KEY_U32, \ + vhash_main_t *, vm, i, \ + { \ + vhash_mix_stage (vm->vhash, vm->n_vectors_div_4, N_KEY_U32); \ + }) + +_(4); +_(5); +_(6); + +#undef _ + +typedef enum +{ + GET, SET, UNSET, +} vhash_main_op_t; + +static void +vhash_main_op (vhash_main_t * vm, vhash_main_op_t op) +{ + u32 n_keys = vec_len (vm->results); + + vm->n_key_u32 = vm->vhash->n_key_u32; + + vhash_validate_sizes (vm->vhash, vm->n_key_u32, n_keys); + + vm->n_vectors_div_4 = n_keys / 4; + vm->n_vectors_mod_4 = n_keys % 4; + + if (vm->n_vectors_div_4 > 0) + { + switch (vm->n_key_u32) + { + default: + ASSERT (0); + break; + +#define _(N_KEY_U32) \ + case N_KEY_U32: \ + if (op == GET) \ + clib_pipeline_run_3_stage \ + (vm->n_vectors_div_4, \ + vm, \ + vhash_main_gather_keys_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_stage_##N_KEY_U32, \ + vhash_main_get_stage_##N_KEY_U32); \ + else if (op == SET) \ + clib_pipeline_run_3_stage \ + (vm->n_vectors_div_4, \ + vm, \ + vhash_main_gather_keys_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_stage_##N_KEY_U32, \ + vhash_main_set_stage_##N_KEY_U32); \ + else \ + clib_pipeline_run_3_stage \ + (vm->n_vectors_div_4, \ + vm, \ + vhash_main_gather_keys_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_stage_##N_KEY_U32, \ + vhash_main_unset_stage_##N_KEY_U32); \ + break; + + _(1); + _(2); + _(3); + +#undef _ + +#define _(N_KEY_U32) \ + case N_KEY_U32: \ + if (op == GET) \ + clib_pipeline_run_4_stage \ + (vm->n_vectors_div_4, \ + vm, \ + vhash_main_gather_keys_stage_##N_KEY_U32, \ + vhash_main_hash_mix_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_stage_##N_KEY_U32, \ + vhash_main_get_stage_##N_KEY_U32); \ + else if (op == SET) \ + clib_pipeline_run_4_stage \ + (vm->n_vectors_div_4, \ + vm, \ + vhash_main_gather_keys_stage_##N_KEY_U32, \ + vhash_main_hash_mix_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_stage_##N_KEY_U32, \ + vhash_main_set_stage_##N_KEY_U32); \ + else \ + clib_pipeline_run_4_stage \ + (vm->n_vectors_div_4, \ + vm, \ + vhash_main_gather_keys_stage_##N_KEY_U32, \ + vhash_main_hash_mix_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_stage_##N_KEY_U32, \ + vhash_main_unset_stage_##N_KEY_U32); \ + break; + + _(4); + _(5); + _(6); + +#undef _ + } + } + + + if (vm->n_vectors_mod_4 > 0) + { + switch (vm->n_key_u32) + { + default: + ASSERT (0); + break; + +#define _(N_KEY_U32) \ + case N_KEY_U32: \ + if (op == GET) \ + clib_pipeline_run_3_stage \ + (1, \ + vm, \ + vhash_main_gather_keys_mod_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_mod_stage_##N_KEY_U32, \ + vhash_main_get_mod_stage_##N_KEY_U32); \ + else if (op == SET) \ + clib_pipeline_run_3_stage \ + (1, \ + vm, \ + vhash_main_gather_keys_mod_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_mod_stage_##N_KEY_U32, \ + vhash_main_set_mod_stage_##N_KEY_U32); \ + else \ + clib_pipeline_run_3_stage \ + (1, \ + vm, \ + vhash_main_gather_keys_mod_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_mod_stage_##N_KEY_U32, \ + vhash_main_unset_mod_stage_##N_KEY_U32); \ + break; + + _(1); + _(2); + _(3); + +#undef _ + +#define _(N_KEY_U32) \ + case N_KEY_U32: \ + if (op == GET) \ + clib_pipeline_run_4_stage \ + (1, \ + vm, \ + vhash_main_gather_keys_mod_stage_##N_KEY_U32, \ + vhash_main_hash_mix_mod_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_mod_stage_##N_KEY_U32, \ + vhash_main_get_mod_stage_##N_KEY_U32); \ + else if (op == SET) \ + clib_pipeline_run_4_stage \ + (1, \ + vm, \ + vhash_main_gather_keys_mod_stage_##N_KEY_U32, \ + vhash_main_hash_mix_mod_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_mod_stage_##N_KEY_U32, \ + vhash_main_set_mod_stage_##N_KEY_U32); \ + else \ + clib_pipeline_run_4_stage \ + (1, \ + vm, \ + vhash_main_gather_keys_mod_stage_##N_KEY_U32, \ + vhash_main_hash_mix_mod_stage_##N_KEY_U32, \ + vhash_main_hash_finalize_mod_stage_##N_KEY_U32, \ + vhash_main_unset_mod_stage_##N_KEY_U32); \ + break; + + _(4); + _(5); + _(6); + +#undef _ + } + } +} + +void +vhash_main_get (vhash_main_t * vm) +{ + vhash_main_op (vm, GET); +} + +void +vhash_main_set (vhash_main_t * vm) +{ + vhash_main_op (vm, SET); +} + +void +vhash_main_unset (vhash_main_t * vm) +{ + vhash_main_op (vm, UNSET); +} + +u32 +vhash_resize_incremental (vhash_resize_t * vr, u32 vector_index, + u32 n_keys_this_call) +{ + vhash_t *old = vr->old; + vhash_main_t *vm = &vr->new; + vhash_t *new = vm->vhash; + uword i, j, n_key_u32; + + n_key_u32 = old->n_key_u32; + + if (vector_index == 0) + { + u32 hash_seeds[3]; + hash_seeds[0] = old->hash_seeds[0].as_u32[0]; + hash_seeds[1] = old->hash_seeds[1].as_u32[0]; + hash_seeds[2] = old->hash_seeds[2].as_u32[0]; + vhash_init (new, old->log2_n_keys + 1, n_key_u32, hash_seeds); + } + + vec_reset_length (vm->keys); + vec_reset_length (vm->results); + + if (0 == (vector_index >> old->log2_n_keys)) + { + for (i = vector_index; 0 == (i >> (old->log2_n_keys - 2)); i++) + { + vhash_search_bucket_t *b = + vhash_get_search_bucket_with_index (old, 4 * i, n_key_u32); + u32 r, *k; + +#define _(I) \ + if ((r = b->result.as_u32[I]) != 0) \ + { \ + vec_add1 (vm->results, r - 1); \ + vec_add2 (vm->keys, k, n_key_u32); \ + for (j = 0; j < n_key_u32; j++) \ + k[j] = b->key[j].as_u32[I]; \ + } + + _(0); + _(1); + _(2); + _(3); + +#undef _ + + if (vec_len (vm->results) >= n_keys_this_call) + { + vhash_main_op (vm, SET); + return i; + } + } + } + + /* Add overflow buckets. */ + { + vhash_overflow_buckets_t *ob; + vhash_overflow_search_bucket_t *b; + + for (ob = old->overflow_buckets; + ob < old->overflow_buckets + ARRAY_LEN (old->overflow_buckets); ob++) + { + foreach_vhash_overflow_bucket (b, ob, old->n_key_u32) + { + u32 r, *k; + +#define _(I) \ + if ((r = b->result.as_u32[I]) != 0) \ + { \ + vec_add1 (vm->results, r - 1); \ + vec_add2 (vm->keys, k, n_key_u32); \ + for (j = 0; j < n_key_u32; j++) \ + k[j] = b->key[j].as_u32[I]; \ + } + + _(0); + _(1); + _(2); + _(3); + +#undef _ + } + } + } + + vhash_main_op (vm, SET); + + /* Let caller know we are done. */ + return ~0; +} + +void +vhash_resize (vhash_t * old, u32 log2_n_keys) +{ + static vhash_resize_t vr; + vhash_t new; + u32 i = 0; + + vr.old = old; + vr.new.vhash = &new; + + while (1) + { + i = vhash_resize_incremental (&vr, i, 1024); + if (i == ~0) + break; + } + + vhash_free (old); + *old = new; +} + +#endif /* CLIB_HAVE_VEC128 */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/vhash.h b/src/vppinfra/vhash.h new file mode 100644 index 00000000..5ab42292 --- /dev/null +++ b/src/vppinfra/vhash.h @@ -0,0 +1,850 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2010 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_vhash_h +#define included_clib_vhash_h + +#include <vppinfra/vector.h> + +#ifdef CLIB_HAVE_VEC128 + +#include <vppinfra/cache.h> +#include <vppinfra/hash.h> +#include <vppinfra/pipeline.h> + +/* Gathers 32 bits worth of key with given index. */ +typedef u32 (vhash_key_function_t) (void *state, u32 vector_index, + u32 key_word_index); +typedef u32x4 (vhash_4key_function_t) (void *state, u32 vector_index, + u32 key_word_index); +/* Sets/gets result of hash lookup. */ +typedef u32 (vhash_result_function_t) (void *state, u32 vector_index, + u32 result, u32 n_key_u32); +typedef u32x4 (vhash_4result_function_t) (void *state, u32 vector_index, + u32x4 results, u32 n_key_u32); + +typedef struct +{ + u32x4_union_t hashed_key[3]; +} vhash_hashed_key_t; + +/* Search buckets are really this structure. */ +typedef struct +{ + /* 4 results for this bucket. + Zero is used to mark empty results. This means user can't use the result ~0 + since user results differ from internal results stored in buckets by 1. + e.g. internal result = user result + 1. */ + u32x4_union_t result; + + /* n_key_u32s u32x4s of key data follow. */ + u32x4_union_t key[0]; +} vhash_search_bucket_t; + +typedef struct +{ + u32x4_union_t *search_buckets; + + /* Vector of bucket free indices. */ + u32 *free_indices; + + /* Number of entries in this overflow bucket. */ + u32 n_overflow; +} vhash_overflow_buckets_t; + +typedef struct +{ + /* 2^log2_n_keys keys grouped in groups of 4. + Each bucket contains 4 results plus 4 keys for a + total of (1 + n_key_u32) u32x4s. */ + u32x4_union_t *search_buckets; + + /* When a bucket of 4 results/keys are full we search + the overflow. hash_key is used to select which overflow + bucket. */ + vhash_overflow_buckets_t overflow_buckets[16]; + + /* Total count of occupied elements in hash table. */ + u32 n_elts; + + u32 log2_n_keys; + + /* Number of 32 bit words in a hash key. */ + u32 n_key_u32; + + u32x4_union_t bucket_mask; + + /* table[i] = min_log2 (first_set (~i)). */ + u8 find_first_zero_table[16]; + + /* Hash seeds for Jenkins hash. */ + u32x4_union_t hash_seeds[3]; + + /* Key work space is a vector of length + n_key_u32s << log2_n_key_word_len_u32x. */ + u32 log2_n_key_word_len_u32x; + + /* Work space to store keys between pipeline stages. */ + u32x4_union_t *key_work_space; + + /* Hash work space to store Jenkins hash values between + pipeline stages. */ + vhash_hashed_key_t *hash_work_space; +} vhash_t; + +always_inline vhash_overflow_buckets_t * +vhash_get_overflow_buckets (vhash_t * h, u32 key) +{ + u32 i = (((key & h->bucket_mask.as_u32[0]) >> 2) & 0xf); + ASSERT (i < ARRAY_LEN (h->overflow_buckets)); + return h->overflow_buckets + i; +} + +always_inline uword +vhash_is_non_empty_overflow_bucket (vhash_t * h, u32 key) +{ + u32 i = (((key & h->bucket_mask.as_u32[0]) >> 2) & 0xf); + ASSERT (i < ARRAY_LEN (h->overflow_buckets)); + return h->overflow_buckets[i].n_overflow > 0; +} + +always_inline void +vhash_free_overflow_buckets (vhash_overflow_buckets_t * obs) +{ + vec_free (obs->search_buckets); + vec_free (obs->free_indices); +} + +always_inline void +vhash_free (vhash_t * h) +{ + uword i; + for (i = 0; i < ARRAY_LEN (h->overflow_buckets); i++) + vhash_free_overflow_buckets (&h->overflow_buckets[i]); + vec_free (h->search_buckets); + vec_free (h->key_work_space); + vec_free (h->hash_work_space); +} + +always_inline void +vhash_set_key_word (vhash_t * h, u32 wi, u32 vi, u32 value) +{ + u32 i0 = (wi << h->log2_n_key_word_len_u32x) + (vi / 4); + u32 i1 = vi % 4; + vec_elt (h->key_work_space, i0).as_u32[i1] = value; +} + +always_inline void +vhash_set_key_word_u32x (vhash_t * h, u32 wi, u32 vi, u32x value) +{ + u32 i0 = (wi << h->log2_n_key_word_len_u32x) + (vi / 4); + vec_elt (h->key_work_space, i0).as_u32x4 = value; +} + +always_inline u32 +vhash_get_key_word (vhash_t * h, u32 wi, u32 vi) +{ + u32 i0 = (wi << h->log2_n_key_word_len_u32x) + (vi / 4); + u32 i1 = vi % 4; + return vec_elt (h->key_work_space, i0).as_u32[i1]; +} + +always_inline u32x +vhash_get_key_word_u32x (vhash_t * h, u32 wi, u32 vi) +{ + u32 i0 = (wi << h->log2_n_key_word_len_u32x) + vi; + return vec_elt (h->key_work_space, i0).as_u32x4; +} + +always_inline void +vhash_validate_sizes (vhash_t * h, u32 n_key_u32, u32 n_vectors) +{ + u32 n, l; + + n = max_pow2 (n_vectors) / 4; + n = clib_max (n, 8); + + h->log2_n_key_word_len_u32x = l = min_log2 (n); + vec_validate_aligned (h->key_work_space, (n_key_u32 << l) - 1, + CLIB_CACHE_LINE_BYTES); + vec_validate_aligned (h->hash_work_space, n - 1, CLIB_CACHE_LINE_BYTES); +} + +always_inline void +vhash_gather_key_stage (vhash_t * h, + u32 vector_index, + u32 n_vectors, + vhash_key_function_t key_function, + void *state, u32 n_key_u32s) +{ + u32 i, j, vi; + + /* Gather keys for 4 packets (for 128 bit vector length e.g. u32x4). */ + for (i = 0; i < n_vectors; i++) + { + vi = vector_index * 4 + i; + for (j = 0; j < n_key_u32s; j++) + vhash_set_key_word (h, j, vi, key_function (state, vi, j)); + } +} + +always_inline void +vhash_gather_4key_stage (vhash_t * h, + u32 vector_index, + vhash_4key_function_t key_function, + void *state, u32 n_key_u32s) +{ + u32 j, vi; + vi = vector_index * 4; + for (j = 0; j < n_key_u32s; j++) + vhash_set_key_word_u32x (h, j, vi, key_function (state, vi, j)); +} + +always_inline void +vhash_mix_stage (vhash_t * h, u32 vector_index, u32 n_key_u32s) +{ + i32 i, n_left; + u32x a, b, c; + + /* Only need to do this for keys longer than 12 bytes. */ + ASSERT (n_key_u32s > 3); + + a = h->hash_seeds[0].as_u32x4; + b = h->hash_seeds[1].as_u32x4; + c = h->hash_seeds[2].as_u32x4; + for (i = 0, n_left = n_key_u32s - 3; n_left > 0; n_left -= 3, i += 3) + { + a += + vhash_get_key_word_u32x (h, n_key_u32s - 1 - (i + 0), vector_index); + if (n_left > 1) + b += + vhash_get_key_word_u32x (h, n_key_u32s - 1 - (i + 1), vector_index); + if (n_left > 2) + c += + vhash_get_key_word_u32x (h, n_key_u32s - 1 - (i + 2), vector_index); + + hash_v3_mix_u32x (a, b, c); + } + + /* Save away a, b, c for later finalize. */ + { + vhash_hashed_key_t *hk = + vec_elt_at_index (h->hash_work_space, vector_index); + hk->hashed_key[0].as_u32x4 = a; + hk->hashed_key[1].as_u32x4 = b; + hk->hashed_key[2].as_u32x4 = c; + } +} + +always_inline vhash_search_bucket_t * +vhash_get_search_bucket_with_index (vhash_t * h, u32 i, u32 n_key_u32s) +{ + return ((vhash_search_bucket_t *) + vec_elt_at_index (h->search_buckets, + (i / 4) * + ((sizeof (vhash_search_bucket_t) / + sizeof (u32x4)) + n_key_u32s))); +} + +always_inline vhash_search_bucket_t * +vhash_get_search_bucket (vhash_t * h, u32 key_hash, u32 n_key_u32s) +{ + u32 i = key_hash & h->bucket_mask.as_u32[0]; + return vhash_get_search_bucket_with_index (h, i, n_key_u32s); +} + +always_inline u32x4 +vhash_get_4_search_bucket_byte_offsets (vhash_t * h, u32x4 key_hash, + u32 n_key_u32s) +{ + vhash_search_bucket_t *b; + u32 n_bytes_per_bucket = sizeof (b[0]) + n_key_u32s * sizeof (b->key[0]); + u32x4 r = key_hash & h->bucket_mask.as_u32x4; + + /* Multiply with shifts and adds to get bucket byte offset. */ +#define _(x) u32x4_ishift_left (r, (x) - 2) + if (n_bytes_per_bucket == (1 << 5)) + r = _(5); + else if (n_bytes_per_bucket == ((1 << 5) + (1 << 4))) + r = _(5) + _(4); + else if (n_bytes_per_bucket == (1 << 6)) + r = _(6); + else if (n_bytes_per_bucket == ((1 << 6) + (1 << 4))) + r = _(6) + _(4); + else if (n_bytes_per_bucket == ((1 << 6) + (1 << 5))) + r = _(6) + _(5); + else if (n_bytes_per_bucket == ((1 << 6) + (1 << 5) + (1 << 4))) + r = _(6) + _(5) + _(4); + else + ASSERT (0); +#undef _ + return r; +} + +always_inline void +vhash_finalize_stage (vhash_t * h, u32 vector_index, u32 n_key_u32s) +{ + i32 n_left; + u32x a, b, c; + vhash_hashed_key_t *hk = + vec_elt_at_index (h->hash_work_space, vector_index); + + if (n_key_u32s <= 3) + { + a = h->hash_seeds[0].as_u32x4; + b = h->hash_seeds[1].as_u32x4; + c = h->hash_seeds[2].as_u32x4; + n_left = n_key_u32s; + } + else + { + a = hk->hashed_key[0].as_u32x4; + b = hk->hashed_key[1].as_u32x4; + c = hk->hashed_key[2].as_u32x4; + n_left = 3; + } + + if (n_left > 0) + a += vhash_get_key_word_u32x (h, 0, vector_index); + if (n_left > 1) + b += vhash_get_key_word_u32x (h, 1, vector_index); + if (n_left > 2) + c += vhash_get_key_word_u32x (h, 2, vector_index); + + hash_v3_finalize_u32x (a, b, c); + + /* Only save away last 32 bits of hash code. */ + hk->hashed_key[2].as_u32x4 = c; + + /* Prefetch buckets. This costs a bit for small tables but saves + big for large ones. */ + { + vhash_search_bucket_t *b0, *b1, *b2, *b3; + u32x4_union_t kh; + + kh.as_u32x4 = vhash_get_4_search_bucket_byte_offsets (h, c, n_key_u32s); + hk->hashed_key[1].as_u32x4 = kh.as_u32x4; + + b0 = (void *) h->search_buckets + kh.as_u32[0]; + b1 = (void *) h->search_buckets + kh.as_u32[1]; + b2 = (void *) h->search_buckets + kh.as_u32[2]; + b3 = (void *) h->search_buckets + kh.as_u32[3]; + + CLIB_PREFETCH (b0, sizeof (b0[0]) + n_key_u32s * sizeof (b0->key[0]), + READ); + CLIB_PREFETCH (b1, sizeof (b1[0]) + n_key_u32s * sizeof (b1->key[0]), + READ); + CLIB_PREFETCH (b2, sizeof (b2[0]) + n_key_u32s * sizeof (b2->key[0]), + READ); + CLIB_PREFETCH (b3, sizeof (b3[0]) + n_key_u32s * sizeof (b3->key[0]), + READ); + } +} + +always_inline u32 +vhash_merge_results (u32x4 r) +{ + r = r | u32x4_word_shift_right (r, 2); + r = r | u32x4_word_shift_right (r, 1); + return u32x4_get0 (r); +} + +/* Bucket is full if none of its 4 results are 0. */ +always_inline u32 +vhash_search_bucket_is_full (u32x4 r) +{ + return u32x4_zero_byte_mask (r) == 0; +} + +always_inline u32 +vhash_non_empty_result_index (u32x4 x) +{ + u32 empty_mask = u32x4_zero_byte_mask (x); + ASSERT (empty_mask != 0xffff); + return min_log2 (0xffff & ~empty_mask) / 4; +} + +always_inline u32 +vhash_empty_result_index (u32x4 x) +{ + u32 empty_mask = u32x4_zero_byte_mask (x); + ASSERT (empty_mask != 0); + return min_log2 (0xffff & empty_mask) / 4; +} + +always_inline u32x4 +vhash_bucket_compare (vhash_t * h, + u32x4_union_t * bucket, u32 key_word_index, u32 vi) +{ + u32 k = vhash_get_key_word (h, key_word_index, vi); + u32x4 x = { k, k, k, k }; + return u32x4_is_equal (bucket[key_word_index].as_u32x4, x); +} + +#define vhash_bucket_compare_4(h,wi,vi,b0,b1,b2,b3,cmp0,cmp1,cmp2,cmp3) \ +do { \ + u32x4 _k4 = vhash_get_key_word_u32x ((h), (wi), (vi)); \ + u32x4 _k0 = u32x4_splat_word (_k4, 0); \ + u32x4 _k1 = u32x4_splat_word (_k4, 1); \ + u32x4 _k2 = u32x4_splat_word (_k4, 2); \ + u32x4 _k3 = u32x4_splat_word (_k4, 3); \ + \ + cmp0 = u32x4_is_equal (b0->key[wi].as_u32x4, _k0); \ + cmp1 = u32x4_is_equal (b1->key[wi].as_u32x4, _k1); \ + cmp2 = u32x4_is_equal (b2->key[wi].as_u32x4, _k2); \ + cmp3 = u32x4_is_equal (b3->key[wi].as_u32x4, _k3); \ +} while (0) + +u32 vhash_get_overflow (vhash_t * h, u32 key_hash, u32 vi, u32 n_key_u32s); + +always_inline void +vhash_get_stage (vhash_t * h, + u32 vector_index, + u32 n_vectors, + vhash_result_function_t result_function, + void *state, u32 n_key_u32s) +{ + u32 i, j; + vhash_hashed_key_t *hk = + vec_elt_at_index (h->hash_work_space, vector_index); + vhash_search_bucket_t *b; + + for (i = 0; i < n_vectors; i++) + { + u32 vi = vector_index * 4 + i; + u32 key_hash = hk->hashed_key[2].as_u32[i]; + u32 result; + u32x4 r, r0; + + b = vhash_get_search_bucket (h, key_hash, n_key_u32s); + + r = r0 = b->result.as_u32x4; + for (j = 0; j < n_key_u32s; j++) + r &= vhash_bucket_compare (h, &b->key[0], j, vi); + + /* At this point only one of 4 results should be non-zero. + So we can or all 4 together and get the valid result (if there is one). */ + result = vhash_merge_results (r); + + if (!result && vhash_search_bucket_is_full (r0)) + result = vhash_get_overflow (h, key_hash, vi, n_key_u32s); + + result_function (state, vi, result - 1, n_key_u32s); + } +} + +always_inline void +vhash_get_4_stage (vhash_t * h, + u32 vector_index, + vhash_4result_function_t result_function, + void *state, u32 n_key_u32s) +{ + u32 i, vi; + vhash_hashed_key_t *hk = + vec_elt_at_index (h->hash_work_space, vector_index); + vhash_search_bucket_t *b0, *b1, *b2, *b3; + u32x4 r0, r1, r2, r3, r0_before, r1_before, r2_before, r3_before; + u32x4_union_t kh; + + kh.as_u32x4 = hk->hashed_key[1].as_u32x4; + + b0 = (void *) h->search_buckets + kh.as_u32[0]; + b1 = (void *) h->search_buckets + kh.as_u32[1]; + b2 = (void *) h->search_buckets + kh.as_u32[2]; + b3 = (void *) h->search_buckets + kh.as_u32[3]; + + r0 = r0_before = b0->result.as_u32x4; + r1 = r1_before = b1->result.as_u32x4; + r2 = r2_before = b2->result.as_u32x4; + r3 = r3_before = b3->result.as_u32x4; + + vi = vector_index * 4; + + for (i = 0; i < n_key_u32s; i++) + { + u32x4 c0, c1, c2, c3; + vhash_bucket_compare_4 (h, i, vector_index, + b0, b1, b2, b3, c0, c1, c2, c3); + r0 &= c0; + r1 &= c1; + r2 &= c2; + r3 &= c3; + } + + u32x4_transpose (r0, r1, r2, r3); + + /* Gather together 4 results. */ + { + u32x4_union_t r; + u32x4 ones = { 1, 1, 1, 1 }; + u32 not_found_mask; + + r.as_u32x4 = r0 | r1 | r2 | r3; + not_found_mask = u32x4_zero_byte_mask (r.as_u32x4); + not_found_mask &= ((vhash_search_bucket_is_full (r0_before) << (4 * 0)) + | (vhash_search_bucket_is_full (r1_before) << (4 * 1)) + | (vhash_search_bucket_is_full (r2_before) << (4 * 2)) + | (vhash_search_bucket_is_full (r3_before) << + (4 * 3))); + if (not_found_mask) + { + u32x4_union_t key_hash; + + key_hash.as_u32x4 = + hk->hashed_key[2].as_u32x4 & h->bucket_mask.as_u32x4; + + /* Slow path: one of the buckets may have been full and we need to search overflow. */ + if (not_found_mask & (1 << (4 * 0))) + r.as_u32[0] = vhash_get_overflow (h, key_hash.as_u32[0], + vi + 0, n_key_u32s); + if (not_found_mask & (1 << (4 * 1))) + r.as_u32[1] = vhash_get_overflow (h, key_hash.as_u32[1], + vi + 1, n_key_u32s); + if (not_found_mask & (1 << (4 * 2))) + r.as_u32[2] = vhash_get_overflow (h, key_hash.as_u32[2], + vi + 2, n_key_u32s); + if (not_found_mask & (1 << (4 * 3))) + r.as_u32[3] = vhash_get_overflow (h, key_hash.as_u32[3], + vi + 3, n_key_u32s); + } + + result_function (state, vi, r.as_u32x4 - ones, n_key_u32s); + } +} + +u32 +vhash_set_overflow (vhash_t * h, + u32 key_hash, u32 vi, u32 new_result, u32 n_key_u32s); + +always_inline void +vhash_set_stage (vhash_t * h, + u32 vector_index, + u32 n_vectors, + vhash_result_function_t result_function, + void *state, u32 n_key_u32s) +{ + u32 i, j, n_new_elts = 0; + vhash_hashed_key_t *hk = + vec_elt_at_index (h->hash_work_space, vector_index); + vhash_search_bucket_t *b; + + for (i = 0; i < n_vectors; i++) + { + u32 vi = vector_index * 4 + i; + u32 key_hash = hk->hashed_key[2].as_u32[i]; + u32 old_result, new_result; + u32 i_set; + u32x4 r, r0, cmp; + + b = vhash_get_search_bucket (h, key_hash, n_key_u32s); + + cmp = vhash_bucket_compare (h, &b->key[0], 0, vi); + for (j = 1; j < n_key_u32s; j++) + cmp &= vhash_bucket_compare (h, &b->key[0], j, vi); + + r0 = b->result.as_u32x4; + r = r0 & cmp; + + /* At this point only one of 4 results should be non-zero. + So we can or all 4 together and get the valid result (if there is one). */ + old_result = vhash_merge_results (r); + + if (!old_result && vhash_search_bucket_is_full (r0)) + old_result = vhash_get_overflow (h, key_hash, vi, n_key_u32s); + + /* Get new result; possibly do something with old result. */ + new_result = result_function (state, vi, old_result - 1, n_key_u32s); + + /* User cannot use ~0 as a hash result since a result of 0 is + used to mark unused bucket entries. */ + ASSERT (new_result + 1 != 0); + new_result += 1; + + /* Set over-writes existing result. */ + if (old_result) + { + i_set = vhash_non_empty_result_index (r); + b->result.as_u32[i_set] = new_result; + } + else + { + /* Set allocates new result. */ + u32 valid_mask; + + valid_mask = (((b->result.as_u32[0] != 0) << 0) + | ((b->result.as_u32[1] != 0) << 1) + | ((b->result.as_u32[2] != 0) << 2) + | ((b->result.as_u32[3] != 0) << 3)); + + /* Rotate 4 bit valid mask so that key_hash corresponds to bit 0. */ + i_set = key_hash & 3; + valid_mask = + ((valid_mask >> i_set) | (valid_mask << (4 - i_set))) & 0xf; + + /* Insert into first empty position in bucket after key_hash. */ + i_set = (i_set + h->find_first_zero_table[valid_mask]) & 3; + + if (valid_mask != 0xf) + { + n_new_elts += 1; + + b->result.as_u32[i_set] = new_result; + + /* Insert new key into search bucket. */ + for (j = 0; j < n_key_u32s; j++) + b->key[j].as_u32[i_set] = vhash_get_key_word (h, j, vi); + } + else + vhash_set_overflow (h, key_hash, vi, new_result, n_key_u32s); + } + } + + h->n_elts += n_new_elts; +} + +u32 vhash_unset_overflow (vhash_t * h, u32 key_hash, u32 vi, u32 n_key_u32s); + +void +vhash_unset_refill_from_overflow (vhash_t * h, + vhash_search_bucket_t * b, + u32 key_hash, u32 n_key_u32s); + +/* Note: Eliot tried doing 4 unsets at once and could not get a speed up + and abandoned vhash_unset_4_stage. */ +always_inline void +vhash_unset_stage (vhash_t * h, + u32 vector_index, + u32 n_vectors, + vhash_result_function_t result_function, + void *state, u32 n_key_u32s) +{ + u32 i, j, n_elts_unset = 0; + vhash_hashed_key_t *hk = + vec_elt_at_index (h->hash_work_space, vector_index); + vhash_search_bucket_t *b; + + for (i = 0; i < n_vectors; i++) + { + u32 vi = vector_index * 4 + i; + u32 key_hash = hk->hashed_key[2].as_u32[i]; + u32 old_result; + u32x4 cmp, r0; + + b = vhash_get_search_bucket (h, key_hash, n_key_u32s); + + cmp = vhash_bucket_compare (h, &b->key[0], 0, vi); + for (j = 1; j < n_key_u32s; j++) + cmp &= vhash_bucket_compare (h, &b->key[0], j, vi); + + r0 = b->result.as_u32x4; + + /* At this point cmp is all ones where key matches and zero otherwise. + So, this will invalidate results for matching key and do nothing otherwise. */ + b->result.as_u32x4 = r0 & ~cmp; + + old_result = vhash_merge_results (r0 & cmp); + + n_elts_unset += old_result != 0; + + if (vhash_search_bucket_is_full (r0)) + { + if (old_result) + vhash_unset_refill_from_overflow (h, b, key_hash, n_key_u32s); + else + old_result = vhash_unset_overflow (h, key_hash, vi, n_key_u32s); + } + + result_function (state, vi, old_result - 1, n_key_u32s); + } + ASSERT (h->n_elts >= n_elts_unset); + h->n_elts -= n_elts_unset; +} + +void vhash_init (vhash_t * h, u32 log2_n_keys, u32 n_key_u32, + u32 * hash_seeds); + +void vhash_resize (vhash_t * old, u32 log2_n_keys); + +typedef struct +{ + vhash_t *vhash; + + union + { + struct + { + u32 *keys; + u32 *results; + }; + + /* Vector layout for get keys. */ + struct + { + u32x4_union_t *get_keys; + u32x4_union_t *get_results; + }; + }; + + u32 n_vectors_div_4; + u32 n_vectors_mod_4; + + u32 n_key_u32; + + u32 n_keys; +} vhash_main_t; + +always_inline u32 +vhash_get_alloc_keys (vhash_main_t * vm, u32 n_keys, u32 n_key_u32) +{ + u32 i, n; + + i = vm->n_keys; + vm->n_keys = i + n_keys; + + n = (round_pow2 (vm->n_keys, 4) / 4) * n_key_u32; + + vec_validate_aligned (vm->get_keys, n - 1, sizeof (vm->get_keys[0])); + vec_validate_aligned (vm->get_results, n - 1, sizeof (vm->get_results[0])); + + return i; +} + +always_inline void +vhash_get_set_key_word (vhash_main_t * vm, u32 vi, u32 wi, u32 n_key_u32, + u32 value) +{ + u32x4_union_t *k = vec_elt_at_index (vm->get_keys, (vi / 4) * n_key_u32); + ASSERT (wi < n_key_u32); + k[wi].as_u32[vi % 4] = value; +} + +always_inline u32 +vhash_get_fetch_result (vhash_main_t * vm, u32 vi) +{ + u32x4_union_t *r = vec_elt_at_index (vm->get_results, vi / 4); + return r->as_u32[vi % 4]; +} + +void vhash_main_get (vhash_main_t * vm); + +always_inline u32 +vhash_set_alloc_keys (vhash_main_t * vm, u32 n_keys, u32 n_key_u32) +{ + u32 i; + + i = vm->n_keys; + vm->n_keys = i + n_keys; + + vec_resize (vm->keys, n_keys * n_key_u32); + vec_resize (vm->results, n_keys); + + return i; +} + +always_inline void +vhash_set_set_key_word (vhash_main_t * vm, u32 vi, u32 wi, u32 n_key_u32, + u32 value) +{ + u32 *k = vec_elt_at_index (vm->keys, vi * n_key_u32); + ASSERT (wi < n_key_u32); + k[wi] = value; +} + +always_inline void +vhash_set_set_result (vhash_main_t * vm, u32 vi, u32 result) +{ + u32 *r = vec_elt_at_index (vm->results, vi); + r[0] = result; +} + +always_inline u32 +vhash_set_fetch_old_result (vhash_main_t * vm, u32 vi) +{ + u32 *r = vec_elt_at_index (vm->results, vi); + return r[0]; +} + +void vhash_main_set (vhash_main_t * vm); + +always_inline u32 +vhash_unset_alloc_keys (vhash_main_t * vm, u32 n_keys, u32 n_key_u32) +{ + return vhash_set_alloc_keys (vm, n_keys, n_key_u32); +} + +always_inline void +vhash_unset_set_key_word (vhash_main_t * vm, u32 vi, u32 wi, u32 n_key_u32, + u32 value) +{ + vhash_set_set_key_word (vm, vi, wi, n_key_u32, value); +} + +always_inline void +vhash_unset_set_result (vhash_main_t * vm, u32 vi, u32 result) +{ + vhash_set_set_result (vm, vi, result); +} + +always_inline u32 +vhash_unset_fetch_old_result (vhash_main_t * vm, u32 vi) +{ + return vhash_set_fetch_old_result (vm, vi); +} + +void vhash_main_unset (vhash_main_t * vm); + +typedef struct +{ + vhash_main_t new; + + vhash_t *old; +} vhash_resize_t; + +u32 vhash_resize_incremental (vhash_resize_t * vr, u32 vector_index, + u32 n_vectors); + +#endif /* CLIB_HAVE_VEC128 */ + +#endif /* included_clib_vhash_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/xxhash.h b/src/vppinfra/xxhash.h new file mode 100644 index 00000000..ea1e21bf --- /dev/null +++ b/src/vppinfra/xxhash.h @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Original license for the code used to construct + clib_xxhash(...). + + xxHash - Fast Hash algorithm + Copyright (C) 2012-2014, Yann Collet. + BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php) + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are + met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above + copyright notice, this list of conditions and the following disclaimer + in the documentation and/or other materials provided with the + distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#ifndef __included_xxhash_h__ +#define __included_xxhash_h__ + +#define PRIME64_1 11400714785074694791ULL +#define PRIME64_2 14029467366897019727ULL +#define PRIME64_3 1609587929392839161ULL +#define PRIME64_4 9650029242287828579ULL +#define PRIME64_5 2870177450012600261ULL +#define XXH_rotl64(x,r) ((x << r) | (x >> (64 - r))) + +static inline u64 +clib_xxhash (u64 key) +{ + u64 k1, h64; + + k1 = key; + h64 = 0x9e3779b97f4a7c13LL + PRIME64_5 + 8; + k1 *= PRIME64_2; + k1 = XXH_rotl64 (k1, 31); + k1 *= PRIME64_1; + h64 ^= k1; + h64 = XXH_rotl64 (h64, 27) * PRIME64_1 + PRIME64_4; + + h64 ^= h64 >> 33; + h64 *= PRIME64_2; + h64 ^= h64 >> 29; + h64 *= PRIME64_3; + h64 ^= h64 >> 32; + return h64; +} + +#endif /* __included_xxhash_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/xy.h b/src/vppinfra/xy.h new file mode 100644 index 00000000..fb562161 --- /dev/null +++ b/src/vppinfra/xy.h @@ -0,0 +1,56 @@ +/* (X,Y) coordinates. */ + +/* + Copyright (c) 2008 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_xy_h +#define included_clib_xy_h + +#include <vppinfra/types.h> + +/* Basic definitions: coordinates and points. */ +typedef double xy_float_t; +typedef __complex__ double xy_t; +typedef __complex__ int ixy_t; + +typedef __complex__ char i8xy_t; +typedef __complex__ short i16xy_t; +typedef __complex__ int i32xy_t; + +/* X/Y components of a point: can be used as either rvalue/lvalue. */ +#define xy_x(x) __real__ (x) +#define xy_y(x) __imag__ (x) + +/* Unit vectors in x/y directions. */ +#define xy_x_unit_vector (1) +#define xy_y_unit_vector (1I) + +#endif /* included_clib_xy_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/zvec.c b/src/vppinfra/zvec.c new file mode 100644 index 00000000..d062e5f7 --- /dev/null +++ b/src/vppinfra/zvec.c @@ -0,0 +1,442 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003, 2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <vppinfra/bitmap.h> +#include <vppinfra/bitops.h> /* for next_with_same_number_of_set_bits */ +#include <vppinfra/error.h> /* for ASSERT */ +#include <vppinfra/mem.h> +#include <vppinfra/os.h> /* for os_panic */ +#include <vppinfra/vec.h> +#include <vppinfra/zvec.h> + +/* Consider coding as bitmap, coding = 2^c_0 + 2^c_1 + ... + 2^c_n + With c_0 < c_1 < ... < c_n. coding == 0 represents c_n = BITS (uword). + + Unsigned integers i = 0 ... are represented as follows: + + 0 <= i < 2^c_0 (i << 1) | (1 << 0) binary: i 1 + 2^c_0 <= i < 2^c_0 + 2^c_1 (i << 2) | (1 << 1) binary: i 1 0 + ... binary: i 0 ... 0 + + Smaller numbers use less bits. Coding is chosen so that encoding + of given histogram of typical values gives smallest number of bits. + The number and position of coding bits c_i are used to best fit the + histogram of typical values. +*/ + +/* Decode given compressed data. Return number of compressed data + bits used. */ +uword +zvec_decode (uword coding, uword zdata, uword * n_zdata_bits) +{ + uword c, d, result, n_bits; + uword explicit_end, implicit_end; + + result = 0; + n_bits = 0; + while (1) + { + c = first_set (coding); + implicit_end = c == coding; + explicit_end = (zdata & 1) & ~implicit_end; + d = (zdata >> explicit_end) & (c - 1); + if (explicit_end | implicit_end) + { + result += d; + n_bits += min_log2 (c) + explicit_end; + break; + } + n_bits += 1; + result += c; + coding ^= c; + zdata >>= 1; + } + + if (coding == 0) + n_bits = BITS (uword); + + *n_zdata_bits = n_bits; + return result; +} + +uword +zvec_encode (uword coding, uword data, uword * n_result_bits) +{ + uword c, shift, result; + uword explicit_end, implicit_end; + + /* Data must be in range. Note special coding == 0 + would break for data - 1 <= coding. */ + ASSERT (data <= coding - 1); + + shift = 0; + while (1) + { + c = first_set (coding); + implicit_end = c == coding; + explicit_end = ((data & (c - 1)) == data); + if (explicit_end | implicit_end) + { + uword t = explicit_end & ~implicit_end; + result = ((data << t) | t) << shift; + *n_result_bits = + /* data bits */ (c == 0 ? BITS (uword) : min_log2 (c)) + /* shift bits */ + shift + t; + return result; + } + data -= c; + coding ^= c; + shift++; + } + + /* Never reached. */ + ASSERT (0); + return ~0; +} + +always_inline uword +get_data (void *data, uword data_bytes, uword is_signed) +{ + if (data_bytes == 1) + return is_signed ? zvec_signed_to_unsigned (*(i8 *) data) : *(u8 *) data; + else if (data_bytes == 2) + return is_signed ? zvec_signed_to_unsigned (*(i16 *) data) : *(u16 *) + data; + else if (data_bytes == 4) + return is_signed ? zvec_signed_to_unsigned (*(i32 *) data) : *(u32 *) + data; + else if (data_bytes == 8) + return is_signed ? zvec_signed_to_unsigned (*(i64 *) data) : *(u64 *) + data; + else + { + os_panic (); + return ~0; + } +} + +always_inline void +put_data (void *data, uword data_bytes, uword is_signed, uword x) +{ + if (data_bytes == 1) + { + if (is_signed) + *(i8 *) data = zvec_unsigned_to_signed (x); + else + *(u8 *) data = x; + } + else if (data_bytes == 2) + { + if (is_signed) + *(i16 *) data = zvec_unsigned_to_signed (x); + else + *(u16 *) data = x; + } + else if (data_bytes == 4) + { + if (is_signed) + *(i32 *) data = zvec_unsigned_to_signed (x); + else + *(u32 *) data = x; + } + else if (data_bytes == 8) + { + if (is_signed) + *(i64 *) data = zvec_unsigned_to_signed (x); + else + *(u64 *) data = x; + } + else + { + os_panic (); + } +} + +always_inline uword * +zvec_encode_inline (uword * zvec, + uword * zvec_n_bits, + uword coding, + void *data, + uword data_stride, + uword n_data, uword data_bytes, uword is_signed) +{ + uword i; + + i = *zvec_n_bits; + while (n_data >= 1) + { + uword d0, z0, l0; + + d0 = get_data (data + 0 * data_stride, data_bytes, is_signed); + data += 1 * data_stride; + n_data -= 1; + + z0 = zvec_encode (coding, d0, &l0); + zvec = clib_bitmap_set_multiple (zvec, i, z0, l0); + i += l0; + } + + *zvec_n_bits = i; + return zvec; +} + +#define _(TYPE,IS_SIGNED) \ + uword * zvec_encode_##TYPE (uword * zvec, \ + uword * zvec_n_bits, \ + uword coding, \ + void * data, \ + uword data_stride, \ + uword n_data) \ + { \ + return zvec_encode_inline (zvec, zvec_n_bits, \ + coding, \ + data, data_stride, n_data, \ + /* data_bytes */ sizeof (TYPE), \ + /* is_signed */ IS_SIGNED); \ + } + +_(u8, /* is_signed */ 0); +_(u16, /* is_signed */ 0); +_(u32, /* is_signed */ 0); +_(u64, /* is_signed */ 0); +_(i8, /* is_signed */ 1); +_(i16, /* is_signed */ 1); +_(i32, /* is_signed */ 1); +_(i64, /* is_signed */ 1); + +#undef _ + +always_inline uword +coding_max_n_bits (uword coding) +{ + uword n_bits; + (void) zvec_decode (coding, 0, &n_bits); + return n_bits; +} + +always_inline void +zvec_decode_inline (uword * zvec, + uword * zvec_n_bits, + uword coding, + void *data, + uword data_stride, + uword n_data, uword data_bytes, uword is_signed) +{ + uword i, n_max; + + i = *zvec_n_bits; + n_max = coding_max_n_bits (coding); + while (n_data >= 1) + { + uword d0, z0, l0; + + z0 = clib_bitmap_get_multiple (zvec, i, n_max); + d0 = zvec_decode (coding, z0, &l0); + i += l0; + put_data (data + 0 * data_stride, data_bytes, is_signed, d0); + data += 1 * data_stride; + n_data -= 1; + } + *zvec_n_bits = i; +} + +#define _(TYPE,IS_SIGNED) \ + void zvec_decode_##TYPE (uword * zvec, \ + uword * zvec_n_bits, \ + uword coding, \ + void * data, \ + uword data_stride, \ + uword n_data) \ + { \ + return zvec_decode_inline (zvec, zvec_n_bits, \ + coding, \ + data, data_stride, n_data, \ + /* data_bytes */ sizeof (TYPE), \ + /* is_signed */ IS_SIGNED); \ + } + +_(u8, /* is_signed */ 0); +_(u16, /* is_signed */ 0); +_(u32, /* is_signed */ 0); +_(u64, /* is_signed */ 0); +_(i8, /* is_signed */ 1); +_(i16, /* is_signed */ 1); +_(i32, /* is_signed */ 1); +_(i64, /* is_signed */ 1); + +#undef _ + +/* Compute number of bits needed to encode given histogram. */ +static uword +zvec_coding_bits (uword coding, uword * histogram_counts, uword min_bits) +{ + uword n_type_bits, n_bits; + uword this_count, last_count, max_count_index; + uword i, b, l; + + n_bits = 0; + n_type_bits = 1; + last_count = 0; + max_count_index = vec_len (histogram_counts) - 1; + + /* Coding is not large enough to encode given data. */ + if (coding <= max_count_index) + return ~0; + + i = 0; + while (coding != 0) + { + b = first_set (coding); + l = min_log2 (b); + i += b; + + this_count = + histogram_counts[i > max_count_index ? max_count_index : i - 1]; + + /* No more data to encode? */ + if (this_count == last_count) + break; + + /* Last coding is i 0 ... 0 so we don't need an extra type bit. */ + if (coding == b) + n_type_bits--; + + n_bits += (this_count - last_count) * (n_type_bits + l); + + /* This coding cannot be minimal: so return. */ + if (n_bits >= min_bits) + return ~0; + + last_count = this_count; + coding ^= b; + n_type_bits++; + } + + return n_bits; +} + +uword +_zvec_coding_from_histogram (void *histogram, + uword histogram_len, + uword histogram_elt_count_offset, + uword histogram_elt_bytes, + uword max_value_to_encode, + zvec_coding_info_t * coding_return) +{ + uword coding, min_coding; + uword min_coding_bits, coding_bits; + uword i, n_bits_set, total_count; + uword *counts; + zvec_histogram_count_t *h_count = histogram + histogram_elt_count_offset; + + if (histogram_len < 1) + { + coding_return->coding = 0; + coding_return->min_coding_bits = 0; + coding_return->n_data = 0; + coding_return->n_codes = 0; + coding_return->ave_coding_bits = 0; + return 0; + } + + total_count = 0; + counts = vec_new (uword, histogram_len); + for (i = 0; i < histogram_len; i++) + { + zvec_histogram_count_t this_count = h_count[0]; + total_count += this_count; + counts[i] = total_count; + h_count = + (zvec_histogram_count_t *) ((void *) h_count + histogram_elt_bytes); + } + + min_coding = 0; + min_coding_bits = ~0; + + { + uword base_coding = + max_value_to_encode != + ~0 ? (1 + max_value_to_encode) : vec_len (counts); + uword max_coding = max_pow2 (2 * base_coding); + + for (n_bits_set = 1; n_bits_set <= 8; n_bits_set++) + { + for (coding = pow2_mask (n_bits_set); + coding < max_coding; + coding = next_with_same_number_of_set_bits (coding)) + { + coding_bits = zvec_coding_bits (coding, counts, min_coding_bits); + if (coding_bits >= min_coding_bits) + continue; + min_coding_bits = coding_bits; + min_coding = coding; + } + } + } + + if (coding_return) + { + coding_return->coding = min_coding; + coding_return->min_coding_bits = min_coding_bits; + coding_return->n_data = total_count; + coding_return->n_codes = vec_len (counts); + coding_return->ave_coding_bits = + (f64) min_coding_bits / (f64) total_count; + } + + vec_free (counts); + + return min_coding; +} + +u8 * +format_zvec_coding (u8 * s, va_list * args) +{ + zvec_coding_info_t *c = va_arg (*args, zvec_coding_info_t *); + return format (s, + "zvec coding 0x%x, %d elts, %d codes, %d bits total, %.4f ave bits/code", + c->coding, c->n_data, c->n_codes, c->min_coding_bits, + c->ave_coding_bits); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/zvec.h b/src/vppinfra/zvec.h new file mode 100644 index 00000000..7d35a3fe --- /dev/null +++ b/src/vppinfra/zvec.h @@ -0,0 +1,166 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001, 2002, 2003 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_zvec_h +#define included_zvec_h + +#include <vppinfra/clib.h> +#include <vppinfra/error.h> /* for ASSERT */ +#include <vppinfra/format.h> + +/* zvec: compressed vectors. + + Data is entropy coded with 32 bit "codings". + + Consider coding as bitmap, coding = 2^c_0 + 2^c_1 + ... + 2^c_n + With c_0 < c_1 < ... < c_n. coding == 0 represents c_n = BITS (uword). + + Unsigned integers i = 0 ... are represented as follows: + + 0 <= i < 2^c_0 (i << 1) | (1 << 0) binary: i 1 + 2^c_0 <= i < 2^c_0 + 2^c_1 (i << 2) | (1 << 1) binary: i 1 0 + ... binary: i 0 ... 0 + + Smaller numbers use less bits. Coding is chosen so that encoding + of given histogram of typical values gives smallest number of bits. + The number and position of coding bits c_i are used to best fit the + histogram of typical values. +*/ + +typedef struct +{ + /* Smallest coding for given histogram of typical data. */ + u32 coding; + + /* Number of data in histogram. */ + u32 n_data; + + /* Number of codes (unique values) in histogram. */ + u32 n_codes; + + /* Number of bits in smallest coding of data. */ + u32 min_coding_bits; + + /* Average number of bits per code. */ + f64 ave_coding_bits; +} zvec_coding_info_t; + +/* Encode/decode data. */ +uword zvec_encode (uword coding, uword data, uword * n_result_bits); +uword zvec_decode (uword coding, uword zdata, uword * n_zdata_bits); + +format_function_t format_zvec_coding; + +typedef u32 zvec_histogram_count_t; + +#define zvec_coding_from_histogram(h,count_field,len,max_value_to_encode,zc) \ + _zvec_coding_from_histogram ((h), (len), \ + STRUCT_OFFSET_OF_VAR (h, count_field), \ + sizeof (h[0]), \ + max_value_to_encode, \ + (zc)) + +uword +_zvec_coding_from_histogram (void *_histogram, + uword histogram_len, + uword histogram_elt_count_offset, + uword histogram_elt_bytes, + uword max_value_to_encode, + zvec_coding_info_t * coding_info_return); + +#define _(TYPE,IS_SIGNED) \ + uword * zvec_encode_##TYPE (uword * zvec, uword * zvec_n_bits, uword coding, \ + void * data, uword data_stride, uword n_data); + +_(u8, /* is_signed */ 0); +_(u16, /* is_signed */ 0); +_(u32, /* is_signed */ 0); +_(u64, /* is_signed */ 0); +_(i8, /* is_signed */ 1); +_(i16, /* is_signed */ 1); +_(i32, /* is_signed */ 1); +_(i64, /* is_signed */ 1); + +#undef _ + +#define _(TYPE,IS_SIGNED) \ + void zvec_decode_##TYPE (uword * zvec, \ + uword * zvec_n_bits, \ + uword coding, \ + void * data, \ + uword data_stride, \ + uword n_data) + +_(u8, /* is_signed */ 0); +_(u16, /* is_signed */ 0); +_(u32, /* is_signed */ 0); +_(u64, /* is_signed */ 0); +_(i8, /* is_signed */ 1); +_(i16, /* is_signed */ 1); +_(i32, /* is_signed */ 1); +_(i64, /* is_signed */ 1); + +#undef _ + +/* Signed <=> unsigned conversion. + -1, -2, -3, ... => 1, 3, 5, ... odds + 0, +1, +2, +3, ... => 0, 2, 4, 6, ... evens */ +always_inline uword +zvec_signed_to_unsigned (word s) +{ + uword a = s < 0; + s = 2 * s + a; + return a ? -s : s; +} + +always_inline word +zvec_unsigned_to_signed (uword u) +{ + uword a = u & 1; + u >>= 1; + return a ? -u : u; +} + +#endif /* included_zvec_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |