69 lines
1.1 KiB
C++
69 lines
1.1 KiB
C++
#pragma once
|
|
|
|
#include <windows.h>
|
|
|
|
class Timer
|
|
{
|
|
public:
|
|
Timer()
|
|
{
|
|
QueryPerformanceFrequency(&m_frequency);
|
|
m_startCount.QuadPart = 0;
|
|
m_endCount.QuadPart = 0;
|
|
|
|
m_stopped = 0;
|
|
m_startTimeInMicroSec = 0;
|
|
m_endTimeInMicroSec = 0;
|
|
}
|
|
|
|
~Timer()
|
|
{
|
|
|
|
}
|
|
|
|
void Start()
|
|
{
|
|
m_startCount.QuadPart = 0;
|
|
QueryPerformanceCounter(&m_startCount);
|
|
}
|
|
|
|
void Stop()
|
|
{
|
|
m_stopped = true;
|
|
QueryPerformanceCounter(&m_endCount);
|
|
}
|
|
|
|
double GetElapsedTimeInMicroSec()
|
|
{
|
|
if (!m_stopped)
|
|
QueryPerformanceCounter(&m_endCount);
|
|
|
|
m_startTimeInMicroSec = m_startCount.QuadPart * (1000000.0 / m_frequency.QuadPart);
|
|
m_endTimeInMicroSec = m_endCount.QuadPart * (1000000.0 / m_frequency.QuadPart);
|
|
|
|
return m_endTimeInMicroSec - m_startTimeInMicroSec;
|
|
}
|
|
|
|
double GetElapsedTimeInMilliSec()
|
|
{
|
|
return GetElapsedTimeInMicroSec() * 0.001;
|
|
}
|
|
|
|
double GetElapsedTimeInSec()
|
|
{
|
|
return GetElapsedTimeInMicroSec() * 0.000001;
|
|
}
|
|
|
|
double GetElapsedTime()
|
|
{
|
|
return GetElapsedTimeInSec();
|
|
}
|
|
|
|
private:
|
|
double m_startTimeInMicroSec;
|
|
double m_endTimeInMicroSec;
|
|
bool m_stopped;
|
|
LARGE_INTEGER m_frequency;
|
|
LARGE_INTEGER m_startCount;
|
|
LARGE_INTEGER m_endCount;
|
|
}; |