//
// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
//
// This software is provided 'as-is', without any express or implied
// warranty.  In no event will the authors be held liable for any damages
// arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not
//    claim that you wrote the original software. If you use this software
//    in a product, an acknowledgment in the product documentation would be
//    appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//    misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
//

#include "PerfTimer.h"

#ifdef WIN32
#	include <windows.h>
#else
#	include <sys/time.h>
#endif

TimeVal getPerfTime()
{
#ifdef WIN32
	int64_t count;
	QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER*>(&count));
	return count;
#else
	timeval now;
	gettimeofday(&now, 0);
	return (TimeVal)now.tv_sec * 1000000L + (TimeVal)now.tv_usec;
#endif
}

int getPerfTimeUsec(const TimeVal duration)
{
#ifdef WIN32
	static int64_t freq = 0;
	if (freq == 0)
	{
		QueryPerformanceFrequency(reinterpret_cast<LARGE_INTEGER*>(&freq));
	}
	return static_cast<int>(duration * 1000000 / freq);
#else
	return static_cast<int>(duration);
#endif
}