/*!
 * \copy
 *     Copyright (c)  2009-2013, Cisco Systems
 *     All rights reserved.
 *
 *     Redistribution and use in source and binary forms, with or without
 *     modification, are permitted provided that the following conditions
 *     are met:
 *
 *        * Redistributions of source code must retain the above copyright
 *          notice, this list of conditions and the following disclaimer.
 *
 *        * Redistributions in binary form must reproduce the above copyright
 *          notice, this list of conditions and the following disclaimer in
 *          the documentation and/or other materials provided with the
 *          distribution.
 *
 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *     COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 *     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 *     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *     POSSIBILITY OF SUCH DAMAGE.
 *
 *
 * \file	measure_time.h
 *
 * \brief	time cost measure utilization
 *
 * \date	04/28/2009 Created
 *
 *************************************************************************************
 */
#ifndef WELS_TIME_COST_MEASURE_UTIL_H__
#define WELS_TIME_COST_MEASURE_UTIL_H__

#include <stdlib.h>

#if !(defined(_MSC_VER) || defined(__MINGW32__))
#include <sys/time.h>
#else
#include "typedefs.h"
//#include <sys/types.h>
#include <sys/timeb.h>
#endif
#include <time.h>
#if defined(WIN32)
#include <windows.h>
#endif//#if WIN32

#ifdef __cplusplus
extern "C" {
#endif//__cplusplus

/*!
 * \brief	time cost measure utilization
 * \param	void_t
 * \return	time elapsed since run (unit: microsecond)
 */

int64_t WelsTime( void_t )
{
#if !(defined(_MSC_VER) || defined(__MINGW32__))
	struct timeval tv_date;
	
	gettimeofday( &tv_date, NULL );
	return( (int64_t) tv_date.tv_sec * 1000000 + (int64_t) tv_date.tv_usec );
#else
#if defined (WIN32)
	static int64_t iMtimeFreq = 0;
	int64_t iMtimeCur = 0;
	int64_t iResult = 0;
	if ( !iMtimeFreq ){
		QueryPerformanceFrequency((LARGE_INTEGER *)&iMtimeFreq);
		if ( !iMtimeFreq )
			iMtimeFreq = 1;
	}
	QueryPerformanceCounter((LARGE_INTEGER *)&iMtimeCur);
	iResult = (int64_t)((double)iMtimeCur * 1e6 / (double)iMtimeFreq + 0.5);
	return iResult;
#else
	struct _timeb sTime;
	
	_ftime(&sTime);
	return ((int64_t)sTime.time * (1000) + (int64_t)sTime.millitm) * (1000);
#endif//#if WIN32
#endif//!(defined(_MSC_VER) || defined(__MINGW32__))
}

#ifdef __cplusplus
}
#endif

#endif//WELS_TIME_COST_MEASURE_UTIL_H__