StopWatch/StopWatch.cpp at master · FJianC/StopWatch · GitHub

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#include "StopWatch.h"

#if defined(_MSC_VER) || defined(__MINGW32__) || defined(WIN32)
StopWatch::StopWatch():elapsed_(0)
{
		elapsed_ = 0;
		start_.QuadPart = 0;
		stop_.QuadPart = 0;
		QueryPerformanceFrequency(&frequency_);
}
#else
StopWatch::StopWatch():elapsed_(0),start_(MicroSeconds::zero()),stop_(MicroSeconds::zero())
{
}
#endif

StopWatch::~StopWatch()
{
}

void StopWatch::Start()
{
#if defined(_MSC_VER) || defined(__MINGW32__) || defined(WIN32)
	QueryPerformanceCounter(&start_);
#else
	start_ = Clock::now();
#endif

}

void StopWatch::Stop()
{
#if defined(_MSC_VER) || defined(__MINGW32__) || defined(WIN32)
	QueryPerformanceCounter(&stop_);
	elapsed_ += (stop_.QuadPart - start_.QuadPart) * 1000000 / frequency_.QuadPart;
#else
	stop_ = Clock::now();
	elapsed_ = std::chrono::duration_cast<MicroSeconds>(stop_ - start_).count();
#endif

}

void StopWatch::ReStart()
{
	elapsed_ = 0;
	Start();
}

double StopWatch::Elapsed()
{
	return static_cast<double>(elapsed_);
}

double StopWatch::ElapsedMS()
{
	return elapsed_ / 1000.0;
}

double StopWatch::ElapsedSecond()
{
	return elapsed_ / 1000000.0;
}