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Diffstat (limited to 'vpp/vppinfra/vppinfra/pipeline.h')
| -rw-r--r-- | vpp/vppinfra/vppinfra/pipeline.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/vpp/vppinfra/vppinfra/pipeline.h b/vpp/vppinfra/vppinfra/pipeline.h new file mode 100644 index 00000000..5a9799b4 --- /dev/null +++ b/vpp/vppinfra/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: + */ |