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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTHREAD_P_H
#define QTHREAD_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 "qplatformdefs.h"
#include "QtCore/qthread.h"
#include "QtCore/qmutex.h"
#include "QtCore/qstack.h"
#include "QtCore/qwaitcondition.h"
#include "QtCore/qmap.h"
#include "private/qobject_p.h"
QT_BEGIN_NAMESPACE
class QAbstractEventDispatcher;
class QEventLoop;
class QPostEvent
{
public:
QObject *receiver;
QEvent *event;
int priority;
inline QPostEvent()
: receiver(0), event(0), priority(0)
{ }
inline QPostEvent(QObject *r, QEvent *e, int p)
: receiver(r), event(e), priority(p)
{ }
};
inline bool operator<(int priority, const QPostEvent &pe)
{
return pe.priority < priority;
}
inline bool operator<(const QPostEvent &pe, int priority)
{
return priority < pe.priority;
}
class QPostEventList : public QList<QPostEvent>
{
public:
// recursion == recursion count for sendPostedEvents()
int recursion;
// sendOffset == the current event to start sending
int startOffset;
// insertionOffset == set by sendPostedEvents to tell postEvent() where to start insertions
int insertionOffset;
QMutex mutex;
inline QPostEventList()
: QList<QPostEvent>(), recursion(0), startOffset(0), insertionOffset(0)
{ }
};
#ifndef QT_NO_THREAD
class QThreadPrivate : public QObjectPrivate
{
Q_DECLARE_PUBLIC(QThread)
public:
QThreadPrivate(QThreadData *d = 0);
~QThreadPrivate();
mutable QMutex mutex;
bool running;
bool finished;
bool terminated;
uint stackSize;
QThread::Priority priority;
static QThread *threadForId(int id);
#ifdef Q_OS_UNIX
pthread_t thread_id;
QWaitCondition thread_done;
static void *start(void *arg);
static void finish(void *arg);
#endif
#if defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
HANDLE handle;
unsigned int id;
int waiters;
bool terminationEnabled, terminatePending;
static unsigned int __stdcall start(void *);
static void finish(void *, bool lockAnyway=true);
#endif // Q_OS_WIN32
QThreadData *data;
static void createEventDispatcher(QThreadData *data);
};
// thread wrapper for the main() thread
class QAdoptedThread : public QThread
{
Q_DECLARE_PRIVATE(QThread)
public:
QAdoptedThread(QThreadData *data = 0);
~QAdoptedThread();
void init();
static QThread *createThreadForAdoption();
private:
void run();
};
#else // QT_NO_THREAD
class QThreadPrivate : public QObjectPrivate
{
public:
QThreadPrivate() : data(QThreadData::current()) {}
~QThreadPrivate() { }
QThreadData *data;
static void setCurrentThread(QThread*) {}
static QThread *threadForId(int) { return QThread::currentThread(); }
static void createEventDispatcher(QThreadData *data);
Q_DECLARE_PUBLIC(QThread)
};
#endif // QT_NO_THREAD
class QThreadData
{
QAtomicInt _ref;
public:
QThreadData(int initialRefCount = 1);
~QThreadData();
static QThreadData *current();
static QThreadData *get2(QThread *thread)
{ Q_ASSERT_X(thread != 0, "QThread", "internal error"); return thread->d_func()->data; }
void ref();
void deref();
QThread *thread;
bool quitNow;
int loopLevel;
QAbstractEventDispatcher *eventDispatcher;
QStack<QEventLoop *> eventLoops;
QPostEventList postEventList;
bool canWait;
QMap<int, void *> tls;
QMutex mutex;
};
QT_END_NAMESPACE
#endif // QTHREAD_P_H
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