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timer.cpp
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timer.cpp
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// ****************************************************************************
// By Antonino Perricone
// http://amicoperry.altervista.org/luce/
//
// This work is licensed under the Creative Commons
// Attribution-NonCommercial-ShareAlike 3.0 Unported License.
// To view a copy of this license, visit
// http://creativecommons.org/licenses/by-nc-sa/3.0/.
// ****************************************************************************
#include "timer.h"
CTimer::CTimer()
{
#ifdef WIN32
QueryPerformanceFrequency(&frequency);
#endif
}
void CTimer::Start()
{
#ifdef WIN32
QueryPerformanceCounter(&startValue);
#else
gettimeofday(&startValue, NULL);
#endif
}
double CTimer::GetTime()
{
#ifdef WIN32
LARGE_INTEGER current;
QueryPerformanceCounter(¤t);
return (double)(current.QuadPart - startValue.QuadPart) / (double)frequency.QuadPart;
#else
timeval current;
gettimeofday(¤t, NULL);
return
double(current.tv_sec - startValue.tv_sec) +
double(current.tv_usec - startValue.tv_usec) / 1000000.;
#endif
}