/*
 * @file PIL_time.h
 * 
 * Platform independant time functions.
 * $Id$
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/blenlib/PIL_time.h
 *  \ingroup bli
 */

 
#ifndef PIL_TIME_H
#define PIL_TIME_H

#ifdef __cplusplus
extern "C" { 
#endif

extern 
	/** Return an indication of time, expressed	as
	 * seconds since some fixed point. Successive calls
	 * are guarenteed to generate values greator than or 
	 * equal to the last call.
	 */
double	PIL_check_seconds_timer		(void);

	/**
	 * Platform-independant sleep function.
	 * @param ms Number of milliseconds to sleep
	 */
void	PIL_sleep_ms				(int ms);

/** Utility defines for timing.
 * requires BLI_utildefines.h for 'AT'
 * TIMEIT_VALUE returns the time since TIMEIT_START was called.
 */
#define TIMEIT_START(var)													\
{ 																			\
	double _timeit_##var= PIL_check_seconds_timer();						\
	printf("time start (" #var "):  " AT "\n");								\
	fflush(stdout);															\
	{																		\


#define TIMEIT_VALUE(var) (float)(PIL_check_seconds_timer() - _timeit_##var)


#define TIMEIT_END(var)														\
	}																		\
	printf("time end   (" #var "): %.6f" "  " AT "\n",	TIMEIT_VALUE(var));	\
	fflush(stdout);															\
}																			\

#ifdef __cplusplus
}
#endif

#endif /* !PIL_TIME_H */
