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