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#ifndef PERFORMANCETIMER_H
#define PERFORMANCETIMER_H

//
// This is a fork of QPerformanceTimer just without the Q prefix
// To fix interface changes issues in different QT versions
// Added restart() function
// return time in ns resolution
//

#include <QtCore/qglobal.h>

class PerformanceTimer
{
public:
    PerformanceTimer() {
      t1 = 0;
#if defined(Q_OS_UNIX) && !defined(Q_OS_MAC)
      t2 = 0;
#endif
    };
    void start();
    qint64 elapsed() const;
    qint64 restart();
    qint64 difference(PerformanceTimer* timer);

private:
    qint64 t1;
#if defined(Q_OS_UNIX) && !defined(Q_OS_MAC)
    qint64 t2;
#endif
};

#endif // PERFORMANCETIMER_H
