it prevents declaring/using more than one of these timing blocks in a same code block (C rule, no var declaration and code mixing)...
		
			
				
	
	
		
			96 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			96 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/*
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 * ***** BEGIN GPL LICENSE BLOCK *****
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2
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 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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 *
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 * The Original Code is Copyright (C) 2013 Blender Foundation.
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 * All rights reserved.
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 *
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 * The Original Code is: all of this file.
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 *
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 * Contributor(s): Campbell Barton
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 *                 Sergey Sharybin
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 *
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 * ***** END GPL LICENSE BLOCK *****
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 */
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/** \file blender/blenlib/PIL_time_utildefines.h
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 *  \ingroup bli
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 *  \brief Utility defines for timing/benchmarks.
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 */
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#ifndef __PIL_TIME_UTILDEFINES_H__
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#define __PIL_TIME_UTILDEFINES_H__
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#include "PIL_time.h"  /* for PIL_check_seconds_timer */
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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 = PIL_check_seconds_timer();                     \
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		printf("time start (" #var "):  " AT "\n");                           \
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		fflush(stdout);                                                       \
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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)(PIL_check_seconds_timer() - _timeit_##var)
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#define TIMEIT_VALUE_PRINT(var)                                               \
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	{                                                                         \
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		printf("time update(" #var "): %.6f" "  " AT "\n", TIMEIT_VALUE(var));\
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		fflush(stdout);                                                       \
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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 "): %.6f" "  " AT "\n", TIMEIT_VALUE(var));    \
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	fflush(stdout);                                                           \
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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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	} (void)0
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#define TIMEIT_BLOCK_INIT(id)                                                 \
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	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 = PIL_check_seconds_timer();          \
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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 += (PIL_check_seconds_timer() -                      \
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		                     _timeit_block_start_##id);                       \
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	} (void)0
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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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	} (void)0
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#endif  /* __PIL_TIME_UTILDEFINES_H__ */
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