e41a52bb
 Hu Chunming
1.优化数据读取线程；2. 添加A...
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/**
* Copyright 1993-2013 NVIDIA Corporation. All rights reserved.
*
* Please refer to the NVIDIA end user license agreement (EULA) associated
* with this source code for terms and conditions that govern your use of
* this software. Any use, reproduction, disclosure, or distribution of
* this software and related documentation outside the terms of the EULA
* is strictly prohibited.
*
*/
#ifndef TIMER_H
#define TIMER_H
#include <stdlib.h>
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#else
#include <sys/time.h>
#endif
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
double PCFreq = 0.0;
__int64 timerStart = 0;
#else
struct timeval timerStart;
#endif
void StartTimer()
{
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
LARGE_INTEGER li;
if (!QueryPerformanceFrequency(&li))
{
printf("QueryPerformanceFrequency failed!\n");
}
PCFreq = (double)li.QuadPart/1000.0;
QueryPerformanceCounter(&li);
timerStart = li.QuadPart;
#else
gettimeofday(&timerStart, NULL);
#endif
}
// time elapsed in ms
double GetTimer()
{
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
LARGE_INTEGER li;
QueryPerformanceCounter(&li);
return (double)(li.QuadPart-timerStart)/PCFreq;
#else
struct timeval timerStop, timerElapsed;
gettimeofday(&timerStop, NULL);
timersub(&timerStop, &timerStart, &timerElapsed);
return timerElapsed.tv_sec*1000.0+timerElapsed.tv_usec/1000.0;
#endif
}
#endif // TIMER_H
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