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95 lines
3 KiB
C
95 lines
3 KiB
C
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/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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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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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company 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
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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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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