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pipeline.h
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/*
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* Copyright (c) 2015 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* pipeline.h: software pipeline infrastructure
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*
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* Copyright (c) 2010 Eliot Dresselhaus
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef included_clib_pipeline_h
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#define included_clib_pipeline_h
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#define clib_pipeline_stage(F,TYPE,ARG,I,BODY) \
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always_inline void F##_inline (void * _, u32 I) \
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{ TYPE ARG = _; { BODY; } } \
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never_inline void F##_no_inline (TYPE ARG, u32 I) \
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{ F##_inline (ARG, I); }
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#define clib_pipeline_stage_static(F,TYPE,ARG,I,BODY) \
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static_always_inline void F##_inline (void * _, u32 I) \
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{ TYPE ARG = _; { BODY; } } \
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never_inline void F##_no_inline (TYPE ARG, u32 I) \
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{ F##_inline (ARG, I); }
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#define clib_pipeline_stage_no_inline(F,TYPE,ARG,I,BODY) \
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never_inline void F##_no_inline (void * _, u32 I) \
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{ TYPE ARG = _; { BODY; } } \
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never_inline void F##_inline (TYPE ARG, u32 I) \
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{ F##_no_inline (ARG, I); }
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#define _clib_pipeline_var(v) _clib_pipeline_##v
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#define clib_pipeline_stage_execute(F,A,I,S) \
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F##_##S (A, _clib_pipeline_var(i) - (I))
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#define clib_pipeline_main_stage(F,A,I) \
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clib_pipeline_stage_execute (F, A, I, inline)
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#define clib_pipeline_init_stage(F,A,I) \
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if (_clib_pipeline_var(i) >= (I)) clib_pipeline_stage_execute (F, A, I, no_inline)
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#define clib_pipeline_exit_stage(F,A,I) \
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if (_clib_pipeline_var(i) >= (I) && _clib_pipeline_var(i) - (I) < _clib_pipeline_var(n_vectors)) \
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clib_pipeline_stage_execute (F, A, I, no_inline)
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#define clib_pipeline_init_loop \
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for (_clib_pipeline_var(i) = 0; \
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_clib_pipeline_var(i) < \
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clib_min (_clib_pipeline_var(n_stages) - 1, \
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_clib_pipeline_var(n_vectors)); \
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_clib_pipeline_var(i)++)
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#define clib_pipeline_main_loop \
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for (; _clib_pipeline_var(i) < _clib_pipeline_var(n_vectors); \
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_clib_pipeline_var(i)++)
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#define clib_pipeline_exit_loop \
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for (; _clib_pipeline_var(i) < (_clib_pipeline_var(n_vectors) \
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+ _clib_pipeline_var(n_stages) - 1); \
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_clib_pipeline_var(i)++)
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#define clib_pipeline_run_2_stage(N,ARG,STAGE0,STAGE1) \
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do { \
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uword _clib_pipeline_var(n_vectors) = (N); \
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uword _clib_pipeline_var(n_stages) = 2; \
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uword _clib_pipeline_var(i); \
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\
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clib_pipeline_init_loop \
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{ \
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clib_pipeline_init_stage (STAGE0, ARG, 0); \
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} \
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\
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clib_pipeline_main_loop \
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{ \
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clib_pipeline_main_stage (STAGE0, ARG, 0); \
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clib_pipeline_main_stage (STAGE1, ARG, 1); \
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} \
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\
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clib_pipeline_exit_loop \
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{ \
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clib_pipeline_exit_stage (STAGE1, ARG, 1); \
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} \
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} while (0)
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#define clib_pipeline_run_3_stage(N,ARG,STAGE0,STAGE1,STAGE2) \
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do { \
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uword _clib_pipeline_var(n_vectors) = (N); \
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uword _clib_pipeline_var(n_stages) = 3; \
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uword _clib_pipeline_var(i); \
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\
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clib_pipeline_init_loop \
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{ \
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clib_pipeline_init_stage (STAGE0, ARG, 0); \
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clib_pipeline_init_stage (STAGE1, ARG, 1); \
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} \
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\
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clib_pipeline_main_loop \
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{ \
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clib_pipeline_main_stage (STAGE0, ARG, 0); \
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clib_pipeline_main_stage (STAGE1, ARG, 1); \
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clib_pipeline_main_stage (STAGE2, ARG, 2); \
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} \
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\
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clib_pipeline_exit_loop \
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{ \
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clib_pipeline_exit_stage (STAGE1, ARG, 1); \
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clib_pipeline_exit_stage (STAGE2, ARG, 2); \
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} \
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} while (0)
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#define clib_pipeline_run_4_stage(N,ARG,STAGE0,STAGE1,STAGE2,STAGE3) \
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do { \
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uword _clib_pipeline_var(n_vectors) = (N); \
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uword _clib_pipeline_var(n_stages) = 4; \
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uword _clib_pipeline_var(i); \
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\
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clib_pipeline_init_loop \
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{ \
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clib_pipeline_init_stage (STAGE0, ARG, 0); \
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clib_pipeline_init_stage (STAGE1, ARG, 1); \
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clib_pipeline_init_stage (STAGE2, ARG, 2); \
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} \
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\
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clib_pipeline_main_loop \
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{ \
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clib_pipeline_main_stage (STAGE0, ARG, 0); \
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clib_pipeline_main_stage (STAGE1, ARG, 1); \
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clib_pipeline_main_stage (STAGE2, ARG, 2); \
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clib_pipeline_main_stage (STAGE3, ARG, 3); \
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} \
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\
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clib_pipeline_exit_loop \
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{ \
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clib_pipeline_exit_stage (STAGE1, ARG, 1); \
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clib_pipeline_exit_stage (STAGE2, ARG, 2); \
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clib_pipeline_exit_stage (STAGE3, ARG, 3); \
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} \
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} while (0)
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#endif
/* included_clib_pipeline_h */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
src
vppinfra
pipeline.h
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