qfuturesynchronizer.h
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上传日期:2022-06-22
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- /****************************************************************************
- **
- ** Copyright (C) 2008 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.
- **
- ** Commercial Usage
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- ** accordance with the Qt Commercial License Agreement provided with the
- ** Software or, alternatively, in accordance with the terms contained in
- ** a written agreement between you and Nokia.
- **
- **
- ** GNU General Public License Usage
- ** Alternatively, this file may be used under the terms of the GNU
- ** General Public License versions 2.0 or 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
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- #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