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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTIMESTAMP_H
#define QTIMESTAMP_H
#include <QtCore/qglobal.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
class Q_CORE_EXPORT QElapsedTimer
{
public:
enum ClockType {
SystemTime,
MonotonicClock,
TickCounter,
MachAbsoluteTime,
PerformanceCounter
};
static ClockType clockType();
static bool isMonotonic();
void start();
qint64 restart();
void invalidate();
bool isValid() const;
qint64 nsecsElapsed() const;
qint64 elapsed() const;
bool hasExpired(qint64 timeout) const;
qint64 msecsSinceReference() const;
qint64 msecsTo(const QElapsedTimer &other) const;
qint64 secsTo(const QElapsedTimer &other) const;
bool operator==(const QElapsedTimer &other) const
{ return t1 == other.t1 && t2 == other.t2; }
bool operator!=(const QElapsedTimer &other) const
{ return !(*this == other); }
friend bool Q_CORE_EXPORT operator<(const QElapsedTimer &v1, const QElapsedTimer &v2);
private:
qint64 t1;
qint64 t2;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QTIMESTAMP_H
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