116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
/* SPDX-FileCopyrightText: 2013 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup bli
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* \brief Utility defines for timing/benchmarks.
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*/
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#pragma once
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#include "BLI_time.h" /* for BLI_time_now_seconds */
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#include "BLI_utildefines.h" /* for AT */
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#define TIMEIT_START(var) \
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{ \
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double _timeit_##var = BLI_time_now_seconds(); \
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printf("time start (" #var "): " AT "\n"); \
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fflush(stdout); \
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{ \
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(void)0
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/**
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* \return the time since TIMEIT_START was called.
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*/
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#define TIMEIT_VALUE(var) (float)(BLI_time_now_seconds() - _timeit_##var)
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#define TIMEIT_VALUE_PRINT(var) \
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{ \
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printf("time update (" #var \
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"): %.6f" \
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" " AT "\n", \
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TIMEIT_VALUE(var)); \
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fflush(stdout); \
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} \
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(void)0
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#define TIMEIT_END(var) \
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} \
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printf("time end (" #var \
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"): %.6f" \
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" " AT "\n", \
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TIMEIT_VALUE(var)); \
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fflush(stdout); \
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} \
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(void)0
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/**
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* _AVERAGED variants do same thing as their basic counterpart,
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* but additionally add elapsed time to an averaged static value,
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* useful to get sensible timing of code running fast and often.
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*/
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#define TIMEIT_START_AVERAGED(var) \
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{ \
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static float _sum_##var = 0.0f; \
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static float _num_##var = 0.0f; \
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double _timeit_##var = BLI_time_now_seconds(); \
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printf("time start (" #var "): " AT "\n"); \
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fflush(stdout); \
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{ \
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(void)0
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#define TIMEIT_AVERAGED_VALUE(var) (_num##var ? (_sum_##var / _num_##var) : 0.0f)
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#define TIMEIT_END_AVERAGED(var) \
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} \
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const float _delta_##var = TIMEIT_VALUE(var); \
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_sum_##var += _delta_##var; \
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_num_##var++; \
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printf("time end (" #var \
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"): %.6f" \
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" " AT "\n", \
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_delta_##var); \
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printf("time averaged (" #var "): %.6f (total: %.6f, in %d runs)\n", \
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(_sum_##var / _num_##var), \
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_sum_##var, \
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(int)_num_##var); \
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fflush(stdout); \
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} \
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(void)0
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/**
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* Given some function/expression:
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* TIMEIT_BENCH(some_function(), some_unique_description);
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*/
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#define TIMEIT_BENCH(expr, id) \
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{ \
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TIMEIT_START(id); \
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(expr); \
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TIMEIT_END(id); \
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} \
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(void)0
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#define TIMEIT_BLOCK_INIT(id) double _timeit_var_##id = 0
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#define TIMEIT_BLOCK_START(id) \
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{ \
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double _timeit_block_start_##id = BLI_time_now_seconds(); \
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{ \
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(void)0
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#define TIMEIT_BLOCK_END(id) \
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} \
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_timeit_var_##id += (BLI_time_now_seconds() - _timeit_block_start_##id); \
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} \
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(void)0
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#define TIMEIT_BLOCK_VALUE(id) (float)(_timeit_var_##id)
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#define TIMEIT_BLOCK_STATS(id) \
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{ \
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printf("%s time (in seconds): %f\n", #id, _timeit_var_##id); \
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fflush(stdout); \
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} \
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(void)0
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