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Diffstat (limited to 'vppinfra/vppinfra/time.h')
-rw-r--r-- | vppinfra/vppinfra/time.h | 298 |
1 files changed, 0 insertions, 298 deletions
diff --git a/vppinfra/vppinfra/time.h b/vppinfra/vppinfra/time.h deleted file mode 100644 index 3b89cf789fe..00000000000 --- a/vppinfra/vppinfra/time.h +++ /dev/null @@ -1,298 +0,0 @@ -/* - * 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 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 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: - */ |