/**************************************************************************** ** ** Copyright (C) 2015 The Qt Company Ltd. ** Contact: http://www.qt.io/licensing/ ** ** This file is part of the QtCore module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see http://www.qt.io/terms-conditions. For further ** information use the contact form at http://www.qt.io/contact-us. ** ** 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 or version 3 as published by the Free ** Software Foundation and appearing in the file LICENSE.LGPLv21 and ** LICENSE.LGPLv3 included in the packaging of this file. Please review the ** following information to ensure the GNU Lesser General Public License ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** As a special exception, The Qt Company gives you certain additional ** rights. These rights are described in The Qt Company 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. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef QFUTRUESYNCHRONIZER_H #define QFUTRUESYNCHRONIZER_H #include #ifndef QT_NO_CONCURRENT QT_BEGIN_HEADER QT_BEGIN_NAMESPACE QT_MODULE(Core) template class QFutureSynchronizer { Q_DISABLE_COPY(QFutureSynchronizer) public: QFutureSynchronizer() : m_cancelOnWait(false) { } explicit QFutureSynchronizer(const QFuture &future) : m_cancelOnWait(false) { addFuture(future); } ~QFutureSynchronizer() { waitForFinished(); } void setFuture(const QFuture &future) { waitForFinished(); m_futures.clear(); addFuture(future); } void addFuture(const QFuture &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 > futures() const { return m_futures; } void setCancelOnWait(bool enabled) { m_cancelOnWait = enabled; } bool cancelOnWait() const { return m_cancelOnWait; } protected: QList > m_futures; bool m_cancelOnWait; }; QT_END_NAMESPACE QT_END_HEADER #endif // QT_NO_CONCURRENT #endif // QFUTRUESYNCHRONIZER_H