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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTHREADPOOL_P_H
#define QTHREADPOOL_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/qmutex.h"
#include "QtCore/qwaitcondition.h"
#include "QtCore/qset.h"
#include "QtCore/qqueue.h"
#include "private/qobject_p.h"
#ifndef QT_NO_THREAD
QT_BEGIN_NAMESPACE
class QThreadPoolThread;
class QThreadPoolPrivate : public QObjectPrivate
{
Q_DECLARE_PUBLIC(QThreadPool)
friend class QThreadPoolThread;
public:
QThreadPoolPrivate();
bool tryStart(QRunnable *task);
void enqueueTask(QRunnable *task, int priority = 0);
int activeThreadCount() const;
void tryToStartMoreThreads();
bool tooManyThreadsActive() const;
void startThread(QRunnable *runnable = 0);
void reset();
bool waitForDone(int msecs = -1);
bool startFrontRunnable();
void stealRunnable(QRunnable *);
mutable QMutex mutex;
QSet<QThreadPoolThread *> allThreads;
QQueue<QThreadPoolThread *> waitingThreads;
QQueue<QThreadPoolThread *> expiredThreads;
QList<QPair<QRunnable *, int> > queue;
QWaitCondition noActiveThreads;
bool isExiting;
int expiryTimeout;
int maxThreadCount;
int reservedThreads;
int activeThreads;
};
QT_END_NAMESPACE
#endif // QT_NO_THREAD
#endif
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