C++ Performance measuring utility classes
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| #ifdef _DEBUG
#define ENABLED_MEASURE_PERFORMANCE
#endif
#define ENABLED_MEASURE_PERFORMANCE
#ifdef ENABLED_MEASURE_PERFORMANCE
class MeasureTime
{
public:
MeasureTime()
{
memset(&m_startTick, 0, sizeof(m_startTick));
}
~MeasureTime()
{
}
void Start(std::wstring const& name)
{
wchar_t strFormat[512];
swprintf_s(strFormat, 512, L"[MEASURE TIME - BEGIN] %s\n", name.c_str());
OutputDebugString(strFormat);
m_name = name;
QueryPerformanceFrequency(&m_startTick);
m_frequency = ((double)m_startTick.QuadPart) / 1000.0;
QueryPerformanceCounter(&m_startTick);
}
void Stop()
{
LARGE_INTEGER curTick;
QueryPerformanceCounter(&curTick);
auto delay = curTick.QuadPart - m_startTick.QuadPart;
auto elapsed = (double)delay / m_frequency;
wchar_t strFormat[512];
swprintf_s(strFormat, 512, L"[MEASURE TIME - END ] %s - %lf(ms)\n", m_name.c_str(), elapsed);
OutputDebugString(strFormat);
}
private:
LARGE_INTEGER m_startTick;
double m_frequency;
std::wstring m_name;
};
class MeasureTimeScope
{
public:
MeasureTimeScope(std::wstring const& name)
{
m_measure.Start(name);
}
MeasureTimeScope(wchar_t const* name)
{
m_measure.Start(name);
}
~MeasureTimeScope()
{
m_measure.Stop();
}
private:
MeasureTime m_measure;
};
#define MEASURE_TIME_SCOPE(X) MeasureTimeScope measure(L#X)
#else
#define MEASURE_TIME_SCOPE(X)
#endif
|