ref: 277242b3a0d52b6e01b28f48d26faad7aa174635
dir: /codec/encoder/core/inc/measure_time.h/
/*!
* \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>
//#include <mmsystem.h> // need static lib winmm.lib for link for such windows 95/98 mm timer
#endif//#if _WIN32
/*!
* \brief time cost measure utilization
* \param void
* \return time elapsed since run (unit: microsecond)
*/
static inline int64_t WelsTime() {
#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 iMeasureTimeFreq = 0;
// static BOOL_T support_high_resolution_perf_flag = TRUE;
int64_t iMeasureTimeCur = 0;
int64_t iResult = 0;
if (0 == iMeasureTimeFreq) {
// Per MSDN minimum supported OS is Windows 2000 Professional/Server above for high-resolution performance counter
/*BOOL_T ret = */QueryPerformanceFrequency ((LARGE_INTEGER*)&iMeasureTimeFreq);
// if ( !ret ) // the installed hardware can not support a high-resolution performance counter, we have to use others instead for well feature
// {
// support_high_resolution_perf_flag = FALSE;
// }
if (!iMeasureTimeFreq)
iMeasureTimeFreq = 1;
}
// if ( support_high_resolution_perf_flag )
// {
QueryPerformanceCounter ((LARGE_INTEGER*)&iMeasureTimeCur);
iResult = (int64_t) ((double)iMeasureTimeCur * 1e6 / (double)iMeasureTimeFreq + 0.5);
// }
// else
// {
// iResult = timeGetTime() * 1000; // 10 ms precision
// }
return iResult;
#else
struct _timeb tb;
_ftime (&tb);
return ((int64_t)tb.time * (1000) + (int64_t)tb.millitm) * (1000);
#endif//#if _WIN32
#endif//!(defined(_MSC_VER) || defined(__MINGW32__))
}
#endif//WELS_TIME_COST_MEASURE_UTIL_H__