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110 lines
2.8 KiB
C++
110 lines
2.8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Copyright (C) 2016-2021 Ivailo Monev
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**
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** This file is part of the QtCore module of the Katie Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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**
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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
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: 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 QFUTRUESYNCHRONIZER_H
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#define QFUTRUESYNCHRONIZER_H
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#include <QtCore/qfuture.h>
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#ifndef QT_NO_CONCURRENT
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QT_BEGIN_NAMESPACE
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template <typename T>
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class QFutureSynchronizer
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{
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Q_DISABLE_COPY(QFutureSynchronizer)
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public:
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QFutureSynchronizer() : m_cancelOnWait(false) { }
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explicit QFutureSynchronizer(const QFuture<T> &future)
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: m_cancelOnWait(false)
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{ addFuture(future); }
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~QFutureSynchronizer() { waitForFinished(); }
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void setFuture(const QFuture<T> &future)
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{
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waitForFinished();
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m_futures.clear();
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addFuture(future);
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}
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void addFuture(const QFuture<T> &future)
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{
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m_futures.append(future);
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}
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void waitForFinished()
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{
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if (m_cancelOnWait) {
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foreach (QFuture<T> future, m_futures) {
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future.cancel();
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}
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}
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foreach (QFuture<T> future, m_futures) {
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future.waitForFinished();
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}
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}
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void clearFutures()
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{
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m_futures.clear();
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}
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QList<QFuture<T> > futures() const
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{
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return m_futures;
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}
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void setCancelOnWait(bool enabled)
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{
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m_cancelOnWait = enabled;
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}
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bool cancelOnWait() const
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{
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return m_cancelOnWait;
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}
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private:
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QList<QFuture<T> > m_futures;
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bool m_cancelOnWait;
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};
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QT_END_NAMESPACE
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#endif // QT_NO_CONCURRENT
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#endif // QFUTRUESYNCHRONIZER_H
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