highresolutiontimer.h

/*
	Actionaz
	Copyright (C) 2008-2012 Jonathan Mercier-Ganady

	Actionaz is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	Actionaz is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program. If not, see <http://www.gnu.org/licenses/>.

	Contact : jmgr@jmgr.info
*/

#ifndef HIGHRESOLUTIONTIMER_H
#define HIGHRESOLUTIONTIMER_H

#include "tools_global.h"

#include <QtGlobal>

#ifdef Q_WS_WIN
#include <Windows.h>
#else
#include <sys/time.h>
#endif

#include <QString>
#include <QTextStream>

namespace Tools
{
	class TOOLSSHARED_EXPORT HighResolutionTimer
	{
	public:
		HighResolutionTimer(const QString &taskName = QString());
		~HighResolutionTimer();

		void start();
		void stop();
		double elapsedMicroseconds();
		double elapsedMilliseconds();
		double elapsedSeconds();
	private:
		static int mLevel;
		bool mRunning;
		QString mTaskName;
		QTextStream mTextStream;
#ifdef Q_WS_WIN
		LARGE_INTEGER mTimeStart;
		LARGE_INTEGER mTimeStop;
		LARGE_INTEGER mFrequency;
#else
		timeval mTimeStart;
		timeval mTimeStop;
#endif
	};
}

#endif // HIGHRESOLUTIONTIMER_H