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