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#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 Q_CORE_EXPORT 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);
    void clear();
    bool stealRunnable(QRunnable *runnable);
    void stealAndRunRunnable(QRunnable *runnable);

    mutable QMutex mutex;
    QSet<QThreadPoolThread *> allThreads;
    QQueue<QThreadPoolThread *> waitingThreads;
    QQueue<QThreadPoolThread *> expiredThreads;
    QVector<QPair<QRunnable *, int> > queue;
    QWaitCondition noActiveThreads;

    bool isExiting;
    int expiryTimeout;
    int maxThreadCount;
    int reservedThreads;
    int activeThreads;
};

QT_END_NAMESPACE

#endif // QT_NO_THREAD
#endif
