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

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

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

**

** This file is part of the QtDBus 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

** 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.

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** $QT_END_LICENSE$

**

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

#ifndef QDBUSTHREADDEBUG_P_H

#define QDBUSTHREADDEBUG_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/qglobal.h>

#ifndef QT_NO_DBUS

#if !defined(QDBUS_THREAD_DEBUG) && defined(QT_BUILD_INTERNAL)

# define QDBUS_THREAD_DEBUG 1

#endif

#if QDBUS_THREAD_DEBUG

QT_BEGIN_NAMESPACE

typedef void (*qdbusThreadDebugFunc)(int, int, QDBusConnectionPrivate *);

QT_END_NAMESPACE

#endif

enum ThreadAction {

    ConnectAction = 0,

    DisconnectAction = 1,

    RegisterObjectAction = 2,

    UnregisterObjectAction = 3,

    ObjectRegisteredAtAction = 4,

    CloseConnectionAction = 10,

    ObjectDestroyedAction = 11,

    RelaySignalAction = 12,

    HandleObjectCallAction = 13,

    HandleSignalAction = 14,

    ConnectRelayAction = 15,

    DisconnectRelayAction = 16,

    FindMetaObject1Action = 17,

    FindMetaObject2Action = 18,

    RegisterServiceAction = 19,

    UnregisterServiceAction = 20,

    UpdateSignalHookOwnerAction = 21,

    HandleObjectCallPostEventAction = 22,

    HandleObjectCallSemaphoreAction = 23,

    DoDispatchAction = 24,

    SendWithReplyAsyncAction = 25,

    MessageResultReceivedAction = 26,

    ActivateSignalAction = 27,

    PendingCallBlockAction = 28,

    AddTimeoutAction = 50,

    RealAddTimeoutAction = 51,

    RemoveTimeoutAction = 52,

    KillTimerAction = 58,

    TimerEventAction = 59,

    AddWatchAction = 60,

    RemoveWatchAction = 61,

    ToggleWatchAction = 62,

    SocketReadAction = 63,

    SocketWriteAction = 64

};

struct QDBusLockerBase

{

    enum Condition

    {

        BeforeLock,

        AfterLock,

        BeforeUnlock,

        AfterUnlock,

        BeforePost,

        AfterPost,

        BeforeDeliver,

        AfterDeliver,

        BeforeAcquire,

        AfterAcquire,

        BeforeRelease,

        AfterRelease

    };

#if QDBUS_THREAD_DEBUG

    static inline void reportThreadAction(int action, int condition, QDBusConnectionPrivate *ptr)

    { if (qdbusThreadDebug) qdbusThreadDebug(action, condition, ptr); }

#else

    static inline void reportThreadAction(int, int, QDBusConnectionPrivate *) { }

#endif

};

struct QDBusReadLocker: QDBusLockerBase

{

    QDBusConnectionPrivate *self;

    ThreadAction action;

    inline QDBusReadLocker(ThreadAction a, QDBusConnectionPrivate *s)

        : self(s), action(a)

    {

        reportThreadAction(action, BeforeLock, self);

        self->lock.lockForRead();

        reportThreadAction(action, AfterLock, self);

    }

    inline ~QDBusReadLocker()

    {

        reportThreadAction(action, BeforeUnlock, self);

        self->lock.unlock();

        reportThreadAction(action, AfterUnlock, self);

    }

};

struct QDBusWriteLocker: QDBusLockerBase

{

    QDBusConnectionPrivate *self;

    ThreadAction action;

    inline QDBusWriteLocker(ThreadAction a, QDBusConnectionPrivate *s)

        : self(s), action(a)

    {

        reportThreadAction(action, BeforeLock, self);

        self->lock.lockForWrite();

        reportThreadAction(action, AfterLock, self);

    }

    inline ~QDBusWriteLocker()

    {

        reportThreadAction(action, BeforeUnlock, self);

        self->lock.unlock();

        reportThreadAction(action, AfterUnlock, self);

    }

};

struct QDBusMutexLocker: QDBusLockerBase

{

    QDBusConnectionPrivate *self;

    QMutex *mutex;

    ThreadAction action;

    inline QDBusMutexLocker(ThreadAction a, QDBusConnectionPrivate *s,

                            QMutex *m)

        : self(s), mutex(m), action(a)

    {

        reportThreadAction(action, BeforeLock, self);

        mutex->lock();

        reportThreadAction(action, AfterLock, self);

    }

    inline ~QDBusMutexLocker()

    {

        reportThreadAction(action, BeforeUnlock, self);

        mutex->unlock();

        reportThreadAction(action, AfterUnlock, self);

    }

};

struct QDBusDispatchLocker: QDBusMutexLocker

{

    inline QDBusDispatchLocker(ThreadAction a, QDBusConnectionPrivate *s)

        : QDBusMutexLocker(a, s, &s->dispatchLock)

    { }

};

struct QDBusWatchAndTimeoutLocker: QDBusMutexLocker

{

    inline QDBusWatchAndTimeoutLocker(ThreadAction a, QDBusConnectionPrivate *s)

        : QDBusMutexLocker(a, s, &s->watchAndTimeoutLock)

    { }

};

#if QDBUS_THREAD_DEBUG

# define SEM_ACQUIRE(action, sem)                                       \

    do {                                                                \

    QDBusLockerBase::reportThreadAction(action, QDBusLockerBase::BeforeAcquire, this); \

    sem.acquire();                                                      \

    QDBusLockerBase::reportThreadAction(action, QDBusLockerBase::AfterAcquire, this); \

    } while (0)

# define SEM_RELEASE(action, sem)                                       \

    do {                                                                \

    QDBusLockerBase::reportThreadAction(action, QDBusLockerBase::BeforeRelease, that); \

    sem.release();                                                      \

    QDBusLockerBase::reportThreadAction(action, QDBusLockerBase::AfterRelease, that); \

    } while (0)

#else

# define SEM_ACQUIRE(action, sem)       sem.acquire()

# define SEM_RELEASE(action, sem)       sem.release()

#endif

#endif // QT_NO_DBUS

#endif