src/corelib/kernel/qeventdispatcher_symbian_p.h
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/corelib/kernel/qeventdispatcher_symbian_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,309 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QEVENTDISPATCHER_SYMBIAN_P_H
+#define QEVENTDISPATCHER_SYMBIAN_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 <qhash.h>
+#include <qset.h>
+#include <qshareddata.h>
+#include <qabstracteventdispatcher.h>
+#include <private/qabstracteventdispatcher_p.h>
+#include <qthread.h>
+#include <qmutex.h>
+#include <qwaitcondition.h>
+#include <qsocketnotifier.h>
+
+#include <e32base.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/select.h>
+
+QT_BEGIN_NAMESPACE
+
+
+class QEventDispatcherSymbian;
+class QTimerActiveObject;
+
+class QActiveObject : public CActive
+{
+public:
+    QActiveObject(TInt priority, QEventDispatcherSymbian *dispatcher);
+    ~QActiveObject();
+
+    bool okToRun();
+
+    void reactivateAndComplete();
+
+protected:
+    QEventDispatcherSymbian *m_dispatcher;
+
+private:
+    bool m_hasAlreadyRun : 1;
+    bool m_hasRunAgain : 1;
+    int m_iterationCount;
+};
+
+class QWakeUpActiveObject : public CActive
+{
+public:
+    QWakeUpActiveObject(QEventDispatcherSymbian *dispatcher);
+    ~QWakeUpActiveObject();
+
+    void Complete();
+
+protected:
+    void DoCancel();
+    void RunL();
+
+private:
+    QEventDispatcherSymbian *m_dispatcher;
+};
+
+struct SymbianTimerInfo : public QSharedData
+{
+    SymbianTimerInfo();
+    ~SymbianTimerInfo();
+
+    int timerId;
+    int interval;
+    int msLeft;
+    bool inTimerEvent;
+    QObject *receiver;
+    QTimerActiveObject *timerAO;
+    QEventDispatcherSymbian *dispatcher;
+};
+
+typedef QExplicitlySharedDataPointer<SymbianTimerInfo> SymbianTimerInfoPtr;
+
+// This is a bit of a proxy class. See comments in SetActive and Start for details.
+class QTimerActiveObject : public QActiveObject
+{
+public:
+    QTimerActiveObject(QEventDispatcherSymbian *dispatcher, SymbianTimerInfo *timerInfo);
+    ~QTimerActiveObject();
+
+    void Start();
+
+protected:
+    void DoCancel();
+    void RunL();
+
+private:
+    void Run();
+    void StartTimer();
+
+private:
+    SymbianTimerInfo *m_timerInfo;
+    RTimer m_rTimer;
+};
+
+class QCompleteDeferredAOs : public CActive
+{
+public:
+    QCompleteDeferredAOs(QEventDispatcherSymbian *dispatcher);
+    ~QCompleteDeferredAOs();
+
+    void complete();
+
+protected:
+    void DoCancel();
+    void RunL();
+
+private:
+    QEventDispatcherSymbian *m_dispatcher;
+};
+
+class QSocketActiveObject : public QActiveObject
+{
+public:
+    QSocketActiveObject(QEventDispatcherSymbian *dispatcher, QSocketNotifier *notifier);
+    ~QSocketActiveObject();
+
+    void deleteLater();
+
+protected:
+    void DoCancel();
+    void RunL();
+
+private:
+    QSocketNotifier *m_notifier;
+    bool m_inSocketEvent;
+    bool m_deleteLater;
+
+    friend class QEventDispatcherSymbian;
+};
+
+class QSelectThread : public QThread
+{
+    Q_DECLARE_PRIVATE(QThread)
+
+public:
+    QSelectThread();
+    ~QSelectThread();
+
+    void requestSocketEvents ( QSocketNotifier *notifier, TRequestStatus *status );
+    void cancelSocketEvents ( QSocketNotifier *notifier );
+    void restart();
+    void stop();
+
+protected:
+    void run();
+
+private:
+    int updateSocketSet(QSocketNotifier::Type type, fd_set *fds);
+    void updateActivatedNotifiers(QSocketNotifier::Type type, fd_set *fds);
+
+private:
+    int m_pipeEnds[2];
+    QHash<QSocketNotifier *, TRequestStatus *> m_AOStatuses;
+    QMutex m_mutex;
+    QWaitCondition m_waitCond;
+    bool m_quit;
+};
+
+class Q_CORE_EXPORT CQtActiveScheduler : public CActiveScheduler
+{
+public: // from CActiveScheduler
+    virtual void Error(TInt aError) const;
+};
+
+class Q_CORE_EXPORT QEventDispatcherSymbian : public QAbstractEventDispatcher
+{
+    Q_DECLARE_PRIVATE(QAbstractEventDispatcher)
+
+public:
+    QEventDispatcherSymbian(QObject *parent = 0);
+    ~QEventDispatcherSymbian();
+
+    void flush();
+    bool hasPendingEvents();
+    void interrupt();
+    bool processEvents ( QEventLoop::ProcessEventsFlags flags );
+    void registerSocketNotifier ( QSocketNotifier * notifier );
+    void registerTimer ( int timerId, int interval, QObject * object );
+    QList<TimerInfo> registeredTimers ( QObject * object ) const;
+    void unregisterSocketNotifier ( QSocketNotifier * notifier );
+    bool unregisterTimer ( int timerId );
+    bool unregisterTimers ( QObject * object );
+    void wakeUp();
+
+    void startingUp();
+    void closingDown();
+
+    void timerFired(int timerId);
+    void socketFired(QSocketActiveObject *socketAO);
+    void wakeUpWasCalled();
+    void reactivateSocketNotifier(QSocketNotifier *notifier);
+
+    void addDeferredActiveObject(QActiveObject *object);
+    void removeDeferredActiveObject(QActiveObject *object);
+    void reactivateDeferredActiveObjects();
+
+    inline int iterationCount() const { return m_iterationCount; }
+
+    static void RequestComplete(TRequestStatus *&status, TInt reason);
+    static void RequestComplete(RThread &threadHandle, TRequestStatus *&status, TInt reason);
+
+private:
+    bool sendPostedEvents();
+    bool sendDeferredSocketEvents();
+
+private:
+    QSelectThread m_selectThread;
+
+    CQtActiveScheduler *m_activeScheduler;
+
+    QHash<int, SymbianTimerInfoPtr> m_timerList;
+    QHash<QSocketNotifier *, QSocketActiveObject *> m_notifiers;
+
+    QWakeUpActiveObject *m_wakeUpAO;
+    QCompleteDeferredAOs *m_completeDeferredAOs;
+
+    volatile bool m_interrupt;
+    QAtomicInt m_wakeUpDone;
+
+    unsigned char m_iterationCount;
+    bool m_noSocketEvents;
+    QList<QSocketActiveObject *> m_deferredSocketEvents;
+
+    QList<QActiveObject *> m_deferredActiveObjects;
+
+    RProcess m_processHandle;
+};
+
+#ifdef QT_DEBUG
+# define VERIFY_PENDING_REQUEST_STATUS \
+    Q_ASSERT(status->Int() == KRequestPending);
+#else
+# define VERIFY_PENDING_REQUEST_STATUS
+#endif
+
+// Convenience functions for doing some sanity checking on our own complete code.
+// Unless QT_DEBUG is defined, it is exactly equivalent to the Symbian version.
+inline void QEventDispatcherSymbian::RequestComplete(TRequestStatus *&status, TInt reason)
+{
+    VERIFY_PENDING_REQUEST_STATUS
+    User::RequestComplete(status, reason);
+}
+inline void QEventDispatcherSymbian::RequestComplete(RThread &threadHandle, TRequestStatus *&status, TInt reason)
+{
+    VERIFY_PENDING_REQUEST_STATUS
+    threadHandle.RequestComplete(status, reason);
+}
+
+#undef VERIFY_PENDING_REQUEST_STATUS
+
+QT_END_NAMESPACE
+
+#endif // QEVENTDISPATCHER_SYMBIAN_P_H