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/****************************************************************************
**
** 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
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