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Diffstat (limited to 'src/corelib/concurrent/qfuturesynchronizer.h')
-rw-r--r-- | src/corelib/concurrent/qfuturesynchronizer.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/corelib/concurrent/qfuturesynchronizer.h b/src/corelib/concurrent/qfuturesynchronizer.h new file mode 100644 index 0000000000..23a2c242aa --- /dev/null +++ b/src/corelib/concurrent/qfuturesynchronizer.h @@ -0,0 +1,121 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, 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. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QFUTRUESYNCHRONIZER_H +#define QFUTRUESYNCHRONIZER_H + +#include <QtCore/qfuture.h> + +#ifndef QT_NO_CONCURRENT + +QT_BEGIN_HEADER +QT_BEGIN_NAMESPACE + +QT_MODULE(Core) + +template <typename T> +class QFutureSynchronizer +{ + Q_DISABLE_COPY(QFutureSynchronizer) + +public: + QFutureSynchronizer() : m_cancelOnWait(false) { } + explicit QFutureSynchronizer(const QFuture<T> &future) + : m_cancelOnWait(false) + { addFuture(future); } + ~QFutureSynchronizer() { waitForFinished(); } + + void setFuture(const QFuture<T> &future) + { + waitForFinished(); + m_futures.clear(); + addFuture(future); + } + + void addFuture(const QFuture<T> &future) + { + m_futures.append(future); + } + + void waitForFinished() + { + if (m_cancelOnWait) { + for (int i = 0; i < m_futures.count(); ++i) { + m_futures[i].cancel(); + } + } + + for (int i = 0; i < m_futures.count(); ++i) { + m_futures[i].waitForFinished(); + } + } + + void clearFutures() + { + m_futures.clear(); + } + + QList<QFuture<T> > futures() const + { + return m_futures; + } + + void setCancelOnWait(bool enabled) + { + m_cancelOnWait = enabled; + } + + bool cancelOnWait() const + { + return m_cancelOnWait; + } + +protected: + QList<QFuture<T> > m_futures; + bool m_cancelOnWait; +}; + +QT_END_NAMESPACE +QT_END_HEADER + +#endif // QT_NO_CONCURRENT + +#endif // QFUTRUESYNCHRONIZER_H |