| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
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| ** |
| ** This file is part of the QtCore module of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #ifndef QFUTURESYNCHRONIZER_H |
| #define QFUTURESYNCHRONIZER_H |
| |
| #include <QtCore/qfuture.h> |
| |
| #ifndef QT_NO_QFUTURE |
| |
| QT_BEGIN_NAMESPACE |
| |
| |
| 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 |
| #endif // QT_NO_QFUTURE |
| |
| #endif // QFUTURESYNCHRONIZER_H |