#include "StdAfx.h"
#include "tickclock.h"

#pragma region TickClock
TickClock::TickClock()
{
	::memset(&m_freq, 0, sizeof(LARGE_INTEGER));
	::QueryPerformanceFrequency(&m_freq);
}

void TickClock::start()
{
	::memset(&m_start, 0, sizeof(LARGE_INTEGER));
	QueryPerformanceCounter(&m_start);
}

LONGLONG TickClock::end(bool bMillisecond)
{
	LARGE_INTEGER now;
	::memset(&now, 0, sizeof(LARGE_INTEGER));
	QueryPerformanceCounter(&now);
	LONGLONG delta(now.QuadPart - m_start.QuadPart);

	return bMillisecond ? (delta * 1000 / m_freq.QuadPart) : delta;
}
#pragma endregion