/******************************************************************************
* Filename:  		HighResTimer.h
* Date:      		12/06/2010
* Mod. Date: 		03/21/2018
* Author:    		Joseph R. Pollack
* Purpose:   		A high resolution timer suitable for profiling code. This new 
*					version	has stripped out the game specific functionality and 
*					does not include windows.h in the header.
******************************************************************************/

#ifndef HIGH_RES_TIMER_H_
#define HIGH_RES_TIMER_H_

#include <stdint.h>


namespace Lunarium
{

	class HighResTimer
	{
	public:
			// NOTE: Currently unused
			enum eUnits { SECONDS, MILLISECONDS, MICROSECONDS, NANOSECONDS, PICOSECONDS };

	public:

		HighResTimer();

		void Initialize();

		// Starts or re starts the timer.
		void Reset();

		// Returns the amount of time in microseconds since the last Reset() call.
		int64_t GetElapsedTime();

		// Returns the elapsed time in terms of seconds
		double GetElapsedSeconds();


	private:

		int64_t mStartTime;
		int64_t mTickFrequency;



		const int mcMils = 1000000;
		const int mcBils = 1000000000;
		const long long mcTrils = 1000000000000;

		/*	// OLD MEMBERS
			long long m_TickFreqQuadPart;
			double m_StartTime;
			*/

	};
}
#endif // HIGH_RES_TIMER_H_