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