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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@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
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