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Timer.cpp
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Timer.cpp
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/*
* Timer.cpp
*
* Li-Yi Wei
* 4/15/2003
*
*/
#include <windows.h>
#include <mmsystem.h>
#include "Timer.hpp"
Timer::Timer(void) : _started(0)
{
// nothing to do
}
Timer::~Timer(void)
{
// nothing to do
}
int Timer::Start(void)
{
if(timeBeginPeriod(1) == TIMERR_NOERROR)
{
_started = 1;
_startRealTime = timeGetTime();
return 1;
}
else
{
return 0;
}
}
int Timer::Stop(void)
{
_started = 0;
_stopRealTime = timeGetTime();
timeEndPeriod(1);
return 1;
}
double Timer::ElapsedTime(const Time & startTime,
const Time & endTime) const
{
return (_stopRealTime - _startRealTime)*0.001;
}
double Timer::ElapsedTime(void) const
{
return ElapsedTime(_startRealTime, _stopRealTime);
}
double Timer::CurrentTime(void) const
{
if(_started)
{
return 0;
}
else
{
if(timeBeginPeriod(1) == TIMERR_NOERROR)
{
Time value = timeGetTime();
timeEndPeriod(1);
return value * 0.001;
}
else
{
return 0;
}
}
}