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Diffstat (limited to 'src/corelib/concurrent/qfutureinterface_p.h')
-rw-r--r-- | src/corelib/concurrent/qfutureinterface_p.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/corelib/concurrent/qfutureinterface_p.h b/src/corelib/concurrent/qfutureinterface_p.h new file mode 100644 index 0000000000..538947ead0 --- /dev/null +++ b/src/corelib/concurrent/qfutureinterface_p.h @@ -0,0 +1,167 @@ +/**************************************************************************** +** +** 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 QFUTUREINTERFACE_P_H +#define QFUTUREINTERFACE_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtCore/qelapsedtimer.h> +#include <QtCore/qcoreevent.h> +#include <QtCore/qlist.h> +#include <QtCore/qwaitcondition.h> +#include <QtCore/qrunnable.h> + +QT_BEGIN_NAMESPACE + +class QFutureCallOutEvent : public QEvent +{ +public: + enum CallOutType { + Started, + Finished, + Canceled, + Paused, + Resumed, + Progress, + ProgressRange, + ResultsReady + }; + + QFutureCallOutEvent() + : QEvent(QEvent::FutureCallOut), callOutType(CallOutType(0)), index1(-1), index2(-1) + { } + QFutureCallOutEvent(CallOutType callOutType, int index1 = -1) + : QEvent(QEvent::FutureCallOut), callOutType(callOutType), index1(index1), index2(-1) + { } + QFutureCallOutEvent(CallOutType callOutType, int index1, int index2) + : QEvent(QEvent::FutureCallOut), callOutType(callOutType), index1(index1), index2(index2) + { } + + QFutureCallOutEvent(CallOutType callOutType, int index1, const QString &text) + : QEvent(QEvent::FutureCallOut), + callOutType(callOutType), + index1(index1), + index2(-1), + text(text) + { } + + CallOutType callOutType; + int index1; + int index2; + QString text; + + QFutureCallOutEvent *clone() const + { + return new QFutureCallOutEvent(callOutType, index1, index2, text); + } + +private: + QFutureCallOutEvent(CallOutType callOutType, + int index1, + int index2, + const QString &text) + : QEvent(QEvent::FutureCallOut), + callOutType(callOutType), + index1(index1), + index2(index2), + text(text) + { } +}; + +class QFutureCallOutInterface +{ +public: + virtual ~QFutureCallOutInterface() {} + virtual void postCallOutEvent(const QFutureCallOutEvent &) = 0; + virtual void callOutInterfaceDisconnected() = 0; +}; + +class QFutureInterfaceBasePrivate +{ +public: + QFutureInterfaceBasePrivate(QFutureInterfaceBase::State initialState); + + QAtomicInt refCount; + mutable QMutex m_mutex; + QWaitCondition waitCondition; + QList<QFutureCallOutInterface *> outputConnections; + int m_progressValue; + int m_progressMinimum; + int m_progressMaximum; + QFutureInterfaceBase::State state; + QElapsedTimer progressTime; + QWaitCondition pausedWaitCondition; + int pendingResults; + QtConcurrent::ResultStoreBase m_results; + bool manualProgress; + int m_expectedResultCount; + QtConcurrent::internal::ExceptionStore m_exceptionStore; + QString m_progressText; + QRunnable *runnable; + + // Internal functions that does not change the mutex state. + // The mutex must be locked when calling these. + int internal_resultCount() const; + bool internal_isResultReadyAt(int index) const; + bool internal_waitForNextResult(); + bool internal_updateProgress(int progress, const QString &progressText = QString()); + void internal_setThrottled(bool enable); + void sendCallOut(const QFutureCallOutEvent &callOut); + void sendCallOuts(const QFutureCallOutEvent &callOut1, const QFutureCallOutEvent &callOut2); + void connectOutputInterface(QFutureCallOutInterface *iface); + void disconnectOutputInterface(QFutureCallOutInterface *iface); + + void setState(QFutureInterfaceBase::State state); +}; + +QT_END_NAMESPACE + +#endif |