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

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the QtCore module of the Qt Toolkit.

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** 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

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**

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** rights.  These rights are described in the Nokia Qt LGPL Exception

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** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

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

#ifndef QTHREAD_H

#define QTHREAD_H

#include <QtCore/qobject.h>

#include <limits.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

class QThreadData;

class QThreadPrivate;

#ifndef QT_NO_THREAD

class Q_CORE_EXPORT QThread : public QObject

{

public:

    static Qt::HANDLE currentThreadId();

    static QThread *currentThread();

    static int idealThreadCount();

    static void yieldCurrentThread();

    explicit QThread(QObject *parent = 0);

    ~QThread();

    enum Priority {

        IdlePriority,

        LowestPriority,

        LowPriority,

        NormalPriority,

        HighPriority,

        HighestPriority,

        TimeCriticalPriority,

        InheritPriority

    };

    void setPriority(Priority priority);

    Priority priority() const;

    bool isFinished() const;

    bool isRunning() const;

    void setStackSize(uint stackSize);

    uint stackSize() const;

    void exit(int retcode = 0);

public Q_SLOTS:

    void start(Priority = InheritPriority);

    void terminate();

    void quit();

public:

    // default argument causes thread to block indefinately

    bool wait(unsigned long time = ULONG_MAX);

Q_SIGNALS:

    void started();

    void finished();

    void terminated();

protected:

    virtual void run();

    int exec();

    static void setTerminationEnabled(bool enabled = true);

    static void sleep(unsigned long);

    static void msleep(unsigned long);

    static void usleep(unsigned long);

#ifdef QT3_SUPPORT

public:

    inline QT3_SUPPORT bool finished() const { return isFinished(); }

    inline QT3_SUPPORT bool running() const { return isRunning(); }

#endif

protected:

    QThread(QThreadPrivate &dd, QObject *parent = 0);

private:

    Q_OBJECT

    Q_DECLARE_PRIVATE(QThread)

    static void initialize();

    static void cleanup();

    friend class QCoreApplication;

    friend class QThreadData;

};

#else // QT_NO_THREAD

class Q_CORE_EXPORT QThread : public QObject

{

public:

    static Qt::HANDLE currentThreadId() { return Qt::HANDLE(currentThread()); }

    static QThread* currentThread();

protected:

    QThread(QThreadPrivate &dd, QObject *parent = 0);

private:

    explicit QThread(QObject *parent = 0);

    static QThread *instance;

    friend class QCoreApplication;

    friend class QThreadData;

    friend class QAdoptedThread;

    Q_DECLARE_PRIVATE(QThread)

};

#endif // QT_NO_THREAD

QT_END_NAMESPACE

QT_END_HEADER

#endif // QTHREAD_H