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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qeventdispatcher_symbian_p.h"
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#include <private/qthread_p.h>
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#include <qcoreapplication.h>
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#include <private/qcoreapplication_p.h>
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#include <qdatetime.h>
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#include <unistd.h>
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#include <errno.h>
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QT_BEGIN_NAMESPACE
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#define WAKE_UP_PRIORITY CActive::EPriorityStandard
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#define TIMER_PRIORITY CActive::EPriorityHigh
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#define NULLTIMER_PRIORITY CActive::EPriorityLow
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#define COMPLETE_DEFERRED_ACTIVE_OBJECTS_PRIORITY CActive::EPriorityIdle
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static inline int qt_pipe_write(int socket, const char *data, qint64 len)
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{
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return ::write(socket, data, len);
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}
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#if defined(write)
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# undef write
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#endif
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static inline int qt_pipe_close(int socket)
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{
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return ::close(socket);
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}
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#if defined(close)
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# undef close
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#endif
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static inline int qt_pipe_fcntl(int socket, int command)
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{
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return ::fcntl(socket, command);
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}
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static inline int qt_pipe2_fcntl(int socket, int command, int option)
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{
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return ::fcntl(socket, command, option);
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}
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#if defined(fcntl)
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# undef fcntl
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#endif
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static inline int qt_socket_select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout)
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{
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return ::select(nfds, readfds, writefds, exceptfds, timeout);
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}
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// This simply interrupts the select and locks the mutex until destroyed.
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class QSelectMutexGrabber
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{
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public:
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QSelectMutexGrabber(int fd, QMutex *mutex)
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: m_mutex(mutex)
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{
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if (m_mutex->tryLock())
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return;
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char dummy = 0;
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qt_pipe_write(fd, &dummy, 1);
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m_mutex->lock();
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}
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~QSelectMutexGrabber()
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{
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m_mutex->unlock();
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}
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private:
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QMutex *m_mutex;
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};
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/*
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* This class is designed to aid in implementing event handling in a more round robin fashion. We
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* cannot change active objects that we do not own, but the active objects that Qt owns will use
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* this as a base class with convenience functions.
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*
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* Here is how it works: On every RunL, the deriving class should call okToRun(). This will allow
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* exactly one run of the active object, and mark it as such. If it is called again, it will return
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* false, and add the object to a queue so it can be run later.
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*
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* The QCompleteDeferredAOs class is a special object that runs after all others, which will
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* reactivate the objects that were previously not run.
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*/
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inline QActiveObject::QActiveObject(TInt priority, QEventDispatcherSymbian *dispatcher)
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: CActive(priority),
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m_dispatcher(dispatcher),
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m_hasAlreadyRun(false),
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m_hasRunAgain(false),
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m_iterationCount(1)
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{
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}
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QActiveObject::~QActiveObject()
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{
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if (m_hasRunAgain)
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m_dispatcher->removeDeferredActiveObject(this);
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}
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bool QActiveObject::okToRun()
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{
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Q_ASSERT(!m_hasRunAgain);
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if (!m_hasAlreadyRun || m_dispatcher->iterationCount() != m_iterationCount) {
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// First occurrence of this event in this iteration.
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m_hasAlreadyRun = true;
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m_iterationCount = m_dispatcher->iterationCount();
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return true;
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} else {
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// The event has already occurred.
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m_dispatcher->addDeferredActiveObject(this);
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m_hasRunAgain = true;
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return false;
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}
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}
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void QActiveObject::reactivateAndComplete()
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{
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iStatus = KRequestPending;
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SetActive();
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TRequestStatus *status = &iStatus;
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QEventDispatcherSymbian::RequestComplete(status, KErrNone);
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m_hasRunAgain = false;
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m_hasAlreadyRun = false;
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}
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QWakeUpActiveObject::QWakeUpActiveObject(QEventDispatcherSymbian *dispatcher)
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: CActive(WAKE_UP_PRIORITY),
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m_dispatcher(dispatcher)
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{
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CActiveScheduler::Add(this);
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iStatus = KRequestPending;
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SetActive();
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}
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QWakeUpActiveObject::~QWakeUpActiveObject()
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{
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Cancel();
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}
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void QWakeUpActiveObject::DoCancel()
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{
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if (iStatus.Int() == KRequestPending) {
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TRequestStatus *status = &iStatus;
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QEventDispatcherSymbian::RequestComplete(status, KErrNone);
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}
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}
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void QWakeUpActiveObject::RunL()
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{
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iStatus = KRequestPending;
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SetActive();
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QT_TRYCATCH_LEAVING(m_dispatcher->wakeUpWasCalled());
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}
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QTimerActiveObject::QTimerActiveObject(QEventDispatcherSymbian *dispatcher, SymbianTimerInfo *timerInfo)
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: QActiveObject((timerInfo->interval) ? TIMER_PRIORITY : NULLTIMER_PRIORITY , dispatcher),
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m_timerInfo(timerInfo)
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{
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}
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QTimerActiveObject::~QTimerActiveObject()
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{
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Cancel();
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}
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void QTimerActiveObject::DoCancel()
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{
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if (m_timerInfo->interval > 0) {
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m_rTimer.Cancel();
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m_rTimer.Close();
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} else {
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if (iStatus.Int() == KRequestPending) {
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TRequestStatus *status = &iStatus;
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QEventDispatcherSymbian::RequestComplete(status, KErrNone);
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}
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}
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}
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void QTimerActiveObject::RunL()
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{
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int error;
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QT_TRYCATCH_ERROR(error, Run());
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// All Symbian error codes are negative.
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if (error < 0) {
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CActiveScheduler::Current()->Error(error); // stop and report here, as this timer will be deleted on scope exit
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}
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}
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#define MAX_SYMBIAN_TIMEOUT_MS 2000000
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void QTimerActiveObject::StartTimer()
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{
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if (m_timerInfo->msLeft > MAX_SYMBIAN_TIMEOUT_MS) {
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//There is loss of accuracy anyway due to needing to restart the timer every 33 minutes,
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//so the 1/64s res of After() is acceptable for these very long timers.
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m_rTimer.After(iStatus, MAX_SYMBIAN_TIMEOUT_MS * 1000);
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m_timerInfo->msLeft -= MAX_SYMBIAN_TIMEOUT_MS;
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} else {
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//HighRes gives the 1ms accuracy expected by Qt, the +1 is to ensure that
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//"Timers will never time out earlier than the specified timeout value"
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//condition is always met.
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m_rTimer.HighRes(iStatus, (m_timerInfo->msLeft + 1) * 1000);
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m_timerInfo->msLeft = 0;
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}
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SetActive();
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}
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void QTimerActiveObject::Run()
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{
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//restart timer immediately, if the timeout has been split because it overflows max for platform.
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if (m_timerInfo->msLeft > 0) {
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StartTimer();
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return;
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}
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if (!okToRun())
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return;
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if (m_timerInfo->interval > 0) {
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// Start a new timer immediately so that we don't lose time.
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m_timerInfo->msLeft = m_timerInfo->interval;
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StartTimer();
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m_timerInfo->dispatcher->timerFired(m_timerInfo->timerId);
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} else {
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// However, we only complete zero timers after the event has finished,
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// in order to prevent busy looping when doing nested loops.
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// Keep the refpointer around in order to avoid deletion until the end of this function.
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SymbianTimerInfoPtr timerInfoPtr(m_timerInfo);
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m_timerInfo->dispatcher->timerFired(m_timerInfo->timerId);
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iStatus = KRequestPending;
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SetActive();
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TRequestStatus *status = &iStatus;
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QEventDispatcherSymbian::RequestComplete(status, KErrNone);
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}
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}
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void QTimerActiveObject::Start()
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{
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CActiveScheduler::Add(this);
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m_timerInfo->msLeft = m_timerInfo->interval;
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if (m_timerInfo->interval > 0) {
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m_rTimer.CreateLocal();
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StartTimer();
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} else {
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iStatus = KRequestPending;
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SetActive();
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TRequestStatus *status = &iStatus;
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QEventDispatcherSymbian::RequestComplete(status, KErrNone);
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}
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}
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SymbianTimerInfo::SymbianTimerInfo()
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: timerAO(0)
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{
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}
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SymbianTimerInfo::~SymbianTimerInfo()
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{
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delete timerAO;
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}
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QCompleteDeferredAOs::QCompleteDeferredAOs(QEventDispatcherSymbian *dispatcher)
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: CActive(COMPLETE_DEFERRED_ACTIVE_OBJECTS_PRIORITY),
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m_dispatcher(dispatcher)
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{
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CActiveScheduler::Add(this);
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iStatus = KRequestPending;
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SetActive();
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}
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QCompleteDeferredAOs::~QCompleteDeferredAOs()
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{
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Cancel();
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}
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void QCompleteDeferredAOs::complete()
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{
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if (iStatus.Int() == KRequestPending) {
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TRequestStatus *status = &iStatus;
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QEventDispatcherSymbian::RequestComplete(status, KErrNone);
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}
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}
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void QCompleteDeferredAOs::DoCancel()
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{
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if (iStatus.Int() == KRequestPending) {
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TRequestStatus *status = &iStatus;
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QEventDispatcherSymbian::RequestComplete(status, KErrNone);
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}
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}
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void QCompleteDeferredAOs::RunL()
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{
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iStatus = KRequestPending;
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SetActive();
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QT_TRYCATCH_LEAVING(m_dispatcher->reactivateDeferredActiveObjects());
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}
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QSelectThread::QSelectThread()
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: m_quit(false)
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{
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if (::pipe(m_pipeEnds) != 0) {
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qWarning("Select thread was unable to open a pipe, errno: %i", errno);
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} else {
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int flags0 = qt_pipe_fcntl(m_pipeEnds[0], F_GETFL);
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int flags1 = qt_pipe_fcntl(m_pipeEnds[1], F_GETFL);
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// We should check the error code here, but Open C has a bug that returns
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// failure even though the operation was successful.
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qt_pipe2_fcntl(m_pipeEnds[0], F_SETFL, flags0 | O_NONBLOCK);
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qt_pipe2_fcntl(m_pipeEnds[1], F_SETFL, flags1 | O_NONBLOCK);
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}
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}
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QSelectThread::~QSelectThread()
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{
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qt_pipe_close(m_pipeEnds[1]);
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qt_pipe_close(m_pipeEnds[0]);
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}
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void QSelectThread::run()
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{
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Q_D(QThread);
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m_mutex.lock();
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while (!m_quit) {
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fd_set readfds;
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fd_set writefds;
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fd_set exceptionfds;
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FD_ZERO(&readfds);
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FD_ZERO(&writefds);
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FD_ZERO(&exceptionfds);
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int maxfd = 0;
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maxfd = qMax(maxfd, updateSocketSet(QSocketNotifier::Read, &readfds));
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maxfd = qMax(maxfd, updateSocketSet(QSocketNotifier::Write, &writefds));
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maxfd = qMax(maxfd, updateSocketSet(QSocketNotifier::Exception, &exceptionfds));
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maxfd = qMax(maxfd, m_pipeEnds[0]);
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maxfd++;
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FD_SET(m_pipeEnds[0], &readfds);
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int ret;
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int savedSelectErrno;
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ret = qt_socket_select(maxfd, &readfds, &writefds, &exceptionfds, 0);
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savedSelectErrno = errno;
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char buffer;
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while (::read(m_pipeEnds[0], &buffer, 1) > 0) {}
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if(ret == 0) {
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// do nothing
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} else if (ret < 0) {
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switch (savedSelectErrno) {
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case EBADF:
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case EINVAL:
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case ENOMEM:
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case EFAULT:
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qWarning("::select() returned an error: %i", savedSelectErrno);
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break;
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case ECONNREFUSED:
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case EPIPE:
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qWarning("::select() returned an error: %i (go through sockets)", savedSelectErrno);
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// prepare to go through all sockets
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// mark in fd sets both:
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// good ones
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// ones that return -1 in select
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419 |
// after loop update notifiers for all of them
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420 |
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421 |
// as we dont have "exception" notifier type
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422 |
// we should force monitoring fd_set of this
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423 |
// type as well
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424 |
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425 |
// clean @ start
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426 |
FD_ZERO(&readfds);
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427 |
FD_ZERO(&writefds);
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|
428 |
FD_ZERO(&exceptionfds);
|
|
429 |
for (QHash<QSocketNotifier *, TRequestStatus *>::const_iterator i = m_AOStatuses.begin();
|
|
430 |
i != m_AOStatuses.end(); ++i) {
|
|
431 |
|
|
432 |
fd_set onefds;
|
|
433 |
FD_ZERO(&onefds);
|
|
434 |
FD_SET(i.key()->socket(), &onefds);
|
|
435 |
|
|
436 |
fd_set excfds;
|
|
437 |
FD_ZERO(&excfds);
|
|
438 |
FD_SET(i.key()->socket(), &excfds);
|
|
439 |
|
|
440 |
maxfd = i.key()->socket() + 1;
|
|
441 |
|
|
442 |
struct timeval timeout;
|
|
443 |
timeout.tv_sec = 0;
|
|
444 |
timeout.tv_usec = 0;
|
|
445 |
|
|
446 |
ret = 0;
|
|
447 |
|
|
448 |
if(i.key()->type() == QSocketNotifier::Read) {
|
|
449 |
ret = ::select(maxfd, &onefds, 0, &excfds, &timeout);
|
|
450 |
if(ret != 0) FD_SET(i.key()->socket(), &readfds);
|
|
451 |
} else if(i.key()->type() == QSocketNotifier::Write) {
|
|
452 |
ret = ::select(maxfd, 0, &onefds, &excfds, &timeout);
|
|
453 |
if(ret != 0) FD_SET(i.key()->socket(), &writefds);
|
|
454 |
}
|
|
455 |
|
|
456 |
} // end for
|
|
457 |
|
|
458 |
// traversed all, so update
|
|
459 |
updateActivatedNotifiers(QSocketNotifier::Read, &readfds);
|
|
460 |
updateActivatedNotifiers(QSocketNotifier::Write, &writefds);
|
|
461 |
updateActivatedNotifiers(QSocketNotifier::Exception, &exceptionfds);
|
|
462 |
|
|
463 |
break;
|
|
464 |
case EINTR: // Should never occur on Symbian, but this is future proof!
|
|
465 |
default:
|
|
466 |
qWarning("::select() returned an unknown error: %i", savedSelectErrno);
|
|
467 |
|
|
468 |
break;
|
|
469 |
}
|
|
470 |
} else {
|
|
471 |
updateActivatedNotifiers(QSocketNotifier::Read, &readfds);
|
|
472 |
updateActivatedNotifiers(QSocketNotifier::Write, &writefds);
|
|
473 |
updateActivatedNotifiers(QSocketNotifier::Exception, &exceptionfds);
|
|
474 |
}
|
|
475 |
|
|
476 |
m_waitCond.wait(&m_mutex);
|
|
477 |
}
|
|
478 |
|
|
479 |
m_mutex.unlock();
|
|
480 |
}
|
|
481 |
|
|
482 |
void QSelectThread::requestSocketEvents ( QSocketNotifier *notifier, TRequestStatus *status )
|
|
483 |
{
|
|
484 |
Q_D(QThread);
|
|
485 |
|
|
486 |
if (!isRunning()) {
|
|
487 |
start();
|
|
488 |
}
|
|
489 |
|
|
490 |
QSelectMutexGrabber lock(m_pipeEnds[1], &m_mutex);
|
|
491 |
|
|
492 |
Q_ASSERT(!m_AOStatuses.contains(notifier));
|
|
493 |
|
|
494 |
m_AOStatuses.insert(notifier, status);
|
|
495 |
|
|
496 |
m_waitCond.wakeAll();
|
|
497 |
}
|
|
498 |
|
|
499 |
void QSelectThread::cancelSocketEvents ( QSocketNotifier *notifier )
|
|
500 |
{
|
|
501 |
QSelectMutexGrabber lock(m_pipeEnds[1], &m_mutex);
|
|
502 |
|
|
503 |
m_AOStatuses.remove(notifier);
|
|
504 |
|
|
505 |
m_waitCond.wakeAll();
|
|
506 |
}
|
|
507 |
|
|
508 |
void QSelectThread::restart()
|
|
509 |
{
|
|
510 |
QSelectMutexGrabber lock(m_pipeEnds[1], &m_mutex);
|
|
511 |
|
|
512 |
m_waitCond.wakeAll();
|
|
513 |
}
|
|
514 |
|
|
515 |
int QSelectThread::updateSocketSet(QSocketNotifier::Type type, fd_set *fds)
|
|
516 |
{
|
|
517 |
int maxfd = 0;
|
|
518 |
if(m_AOStatuses.isEmpty()) {
|
|
519 |
/*
|
|
520 |
* Wonder if should return -1
|
|
521 |
* to signal that no descriptors
|
|
522 |
* added to fds
|
|
523 |
*/
|
|
524 |
return maxfd;
|
|
525 |
}
|
|
526 |
for ( QHash<QSocketNotifier *, TRequestStatus *>::const_iterator i = m_AOStatuses.begin();
|
|
527 |
i != m_AOStatuses.end(); ++i) {
|
|
528 |
if (i.key()->type() == type) {
|
|
529 |
FD_SET(i.key()->socket(), fds);
|
|
530 |
maxfd = qMax(maxfd, i.key()->socket());
|
|
531 |
} else if(type == QSocketNotifier::Exception) {
|
|
532 |
/*
|
|
533 |
* We are registering existing sockets
|
|
534 |
* always to exception set
|
|
535 |
*
|
|
536 |
* Doing double FD_SET shouldn't
|
|
537 |
* matter
|
|
538 |
*/
|
|
539 |
FD_SET(i.key()->socket(), fds);
|
|
540 |
maxfd = qMax(maxfd, i.key()->socket());
|
|
541 |
}
|
|
542 |
}
|
|
543 |
|
|
544 |
return maxfd;
|
|
545 |
}
|
|
546 |
|
|
547 |
void QSelectThread::updateActivatedNotifiers(QSocketNotifier::Type type, fd_set *fds)
|
|
548 |
{
|
|
549 |
Q_D(QThread);
|
|
550 |
if(m_AOStatuses.isEmpty()) {
|
|
551 |
return;
|
|
552 |
}
|
|
553 |
QList<QSocketNotifier *> toRemove;
|
|
554 |
for (QHash<QSocketNotifier *, TRequestStatus *>::const_iterator i = m_AOStatuses.begin();
|
|
555 |
i != m_AOStatuses.end(); ++i) {
|
|
556 |
if (i.key()->type() == type && FD_ISSET(i.key()->socket(), fds)) {
|
|
557 |
toRemove.append(i.key());
|
|
558 |
TRequestStatus *status = i.value();
|
|
559 |
// Thread data is still owned by the main thread.
|
|
560 |
QEventDispatcherSymbian::RequestComplete(d->threadData->symbian_thread_handle, status, KErrNone);
|
|
561 |
} else if(type == QSocketNotifier::Exception && FD_ISSET(i.key()->socket(), fds)) {
|
|
562 |
/*
|
|
563 |
* check if socket is in exception set
|
|
564 |
* then signal RequestComplete for it
|
|
565 |
*/
|
|
566 |
qWarning("exception on %d", i.key()->socket());
|
|
567 |
toRemove.append(i.key());
|
|
568 |
TRequestStatus *status = i.value();
|
|
569 |
QEventDispatcherSymbian::RequestComplete(d->threadData->symbian_thread_handle, status, KErrNone);
|
|
570 |
}
|
|
571 |
}
|
|
572 |
|
|
573 |
for (int c = 0; c < toRemove.size(); ++c) {
|
|
574 |
m_AOStatuses.remove(toRemove[c]);
|
|
575 |
}
|
|
576 |
}
|
|
577 |
|
|
578 |
void QSelectThread::stop()
|
|
579 |
{
|
|
580 |
m_quit = true;
|
|
581 |
restart();
|
|
582 |
wait();
|
|
583 |
}
|
|
584 |
|
|
585 |
QSocketActiveObject::QSocketActiveObject(QEventDispatcherSymbian *dispatcher, QSocketNotifier *notifier)
|
|
586 |
: QActiveObject(CActive::EPriorityStandard, dispatcher),
|
|
587 |
m_notifier(notifier),
|
|
588 |
m_inSocketEvent(false),
|
|
589 |
m_deleteLater(false)
|
|
590 |
{
|
|
591 |
CActiveScheduler::Add(this);
|
|
592 |
iStatus = KRequestPending;
|
|
593 |
SetActive();
|
|
594 |
}
|
|
595 |
|
|
596 |
QSocketActiveObject::~QSocketActiveObject()
|
|
597 |
{
|
|
598 |
Cancel();
|
|
599 |
}
|
|
600 |
|
|
601 |
void QSocketActiveObject::DoCancel()
|
|
602 |
{
|
|
603 |
if (iStatus.Int() == KRequestPending) {
|
|
604 |
TRequestStatus *status = &iStatus;
|
|
605 |
QEventDispatcherSymbian::RequestComplete(status, KErrNone);
|
|
606 |
}
|
|
607 |
}
|
|
608 |
|
|
609 |
void QSocketActiveObject::RunL()
|
|
610 |
{
|
|
611 |
if (!okToRun())
|
|
612 |
return;
|
|
613 |
|
|
614 |
QT_TRYCATCH_LEAVING(m_dispatcher->socketFired(this));
|
|
615 |
}
|
|
616 |
|
|
617 |
void QSocketActiveObject::deleteLater()
|
|
618 |
{
|
|
619 |
if (m_inSocketEvent) {
|
|
620 |
m_deleteLater = true;
|
|
621 |
} else {
|
|
622 |
delete this;
|
|
623 |
}
|
|
624 |
}
|
|
625 |
|
|
626 |
QEventDispatcherSymbian::QEventDispatcherSymbian(QObject *parent)
|
|
627 |
: QAbstractEventDispatcher(parent),
|
|
628 |
m_activeScheduler(0),
|
|
629 |
m_wakeUpAO(0),
|
|
630 |
m_completeDeferredAOs(0),
|
|
631 |
m_interrupt(false),
|
|
632 |
m_wakeUpDone(0),
|
|
633 |
m_iterationCount(0),
|
|
634 |
m_noSocketEvents(false)
|
|
635 |
{
|
|
636 |
}
|
|
637 |
|
|
638 |
QEventDispatcherSymbian::~QEventDispatcherSymbian()
|
|
639 |
{
|
|
640 |
m_processHandle.Close();
|
|
641 |
}
|
|
642 |
|
|
643 |
void QEventDispatcherSymbian::startingUp()
|
|
644 |
{
|
|
645 |
if( !CActiveScheduler::Current() ) {
|
|
646 |
m_activeScheduler = q_check_ptr(new CQtActiveScheduler()); // CBase derived class needs to be checked on new
|
|
647 |
CActiveScheduler::Install(m_activeScheduler);
|
|
648 |
}
|
|
649 |
m_wakeUpAO = q_check_ptr(new QWakeUpActiveObject(this));
|
|
650 |
m_completeDeferredAOs = q_check_ptr(new QCompleteDeferredAOs(this));
|
|
651 |
// We already might have posted events, wakeup once to process them
|
|
652 |
wakeUp();
|
|
653 |
}
|
|
654 |
|
|
655 |
void QEventDispatcherSymbian::closingDown()
|
|
656 |
{
|
|
657 |
if (m_selectThread.isRunning()) {
|
|
658 |
m_selectThread.stop();
|
|
659 |
}
|
|
660 |
|
|
661 |
delete m_completeDeferredAOs;
|
|
662 |
delete m_wakeUpAO;
|
|
663 |
if (m_activeScheduler) {
|
|
664 |
delete m_activeScheduler;
|
|
665 |
}
|
|
666 |
}
|
|
667 |
|
|
668 |
bool QEventDispatcherSymbian::processEvents ( QEventLoop::ProcessEventsFlags flags )
|
|
669 |
{
|
|
670 |
bool handledAnyEvent = false;
|
|
671 |
bool oldNoSocketEventsValue = m_noSocketEvents;
|
|
672 |
|
|
673 |
QT_TRY {
|
|
674 |
Q_D(QAbstractEventDispatcher);
|
|
675 |
|
|
676 |
// It is safe if this counter overflows. The main importance is that each
|
|
677 |
// iteration count is different from the last.
|
|
678 |
m_iterationCount++;
|
|
679 |
|
|
680 |
RThread &thread = d->threadData->symbian_thread_handle;
|
|
681 |
|
|
682 |
bool block;
|
|
683 |
if (flags & QEventLoop::WaitForMoreEvents) {
|
|
684 |
block = true;
|
|
685 |
emit aboutToBlock();
|
|
686 |
} else {
|
|
687 |
block = false;
|
|
688 |
}
|
|
689 |
|
|
690 |
if (flags & QEventLoop::ExcludeSocketNotifiers) {
|
|
691 |
m_noSocketEvents = true;
|
|
692 |
} else {
|
|
693 |
m_noSocketEvents = false;
|
|
694 |
handledAnyEvent = sendDeferredSocketEvents();
|
|
695 |
}
|
|
696 |
|
|
697 |
bool handledSymbianEvent = false;
|
|
698 |
m_interrupt = false;
|
|
699 |
|
|
700 |
/*
|
|
701 |
* This QTime variable is used to measure the time it takes to finish
|
|
702 |
* the event loop. If we take too long in the loop, other processes
|
|
703 |
* may be starved and killed. After the first event has completed, we
|
|
704 |
* take the current time, and if the remaining events take longer than
|
|
705 |
* a preset time, we temporarily lower the priority to force a context
|
|
706 |
* switch. For applications that do not take unecessarily long in the
|
|
707 |
* event loop, the priority will not be altered.
|
|
708 |
*/
|
|
709 |
QTime time;
|
|
710 |
enum {
|
|
711 |
FirstRun,
|
|
712 |
SubsequentRun,
|
|
713 |
TimeStarted
|
|
714 |
} timeState = FirstRun;
|
|
715 |
|
|
716 |
TProcessPriority priority;
|
|
717 |
|
|
718 |
while (1) {
|
|
719 |
if (block) {
|
|
720 |
// This is where Qt will spend most of its time.
|
|
721 |
CActiveScheduler::Current()->WaitForAnyRequest();
|
|
722 |
} else {
|
|
723 |
if (thread.RequestCount() == 0) {
|
|
724 |
break;
|
|
725 |
}
|
|
726 |
// This one should return without delay.
|
|
727 |
CActiveScheduler::Current()->WaitForAnyRequest();
|
|
728 |
}
|
|
729 |
|
|
730 |
if (timeState == SubsequentRun) {
|
|
731 |
time.start();
|
|
732 |
timeState = TimeStarted;
|
|
733 |
}
|
|
734 |
|
|
735 |
TInt error;
|
|
736 |
handledSymbianEvent = CActiveScheduler::RunIfReady(error, CActive::EPriorityIdle);
|
|
737 |
if (error) {
|
|
738 |
qWarning("CActiveScheduler::RunIfReady() returned error: %i\n", error);
|
|
739 |
CActiveScheduler::Current()->Error(error);
|
|
740 |
}
|
|
741 |
|
|
742 |
if (!handledSymbianEvent) {
|
|
743 |
qFatal("QEventDispatcherSymbian::processEvents(): Caught Symbian stray signal");
|
|
744 |
}
|
|
745 |
handledAnyEvent = true;
|
|
746 |
if (m_interrupt) {
|
|
747 |
break;
|
|
748 |
}
|
|
749 |
block = false;
|
|
750 |
if (timeState == TimeStarted && time.elapsed() > 100) {
|
|
751 |
priority = m_processHandle.Priority();
|
|
752 |
m_processHandle.SetPriority(EPriorityBackground);
|
|
753 |
time.start();
|
|
754 |
// Slight chance of race condition in the next lines, but nothing fatal
|
|
755 |
// will happen, just wrong priority.
|
|
756 |
if (m_processHandle.Priority() == EPriorityBackground) {
|
|
757 |
m_processHandle.SetPriority(priority);
|
|
758 |
}
|
|
759 |
}
|
|
760 |
if (timeState == FirstRun)
|
|
761 |
timeState = SubsequentRun;
|
|
762 |
};
|
|
763 |
|
|
764 |
emit awake();
|
|
765 |
} QT_CATCH (const std::exception& ex) {
|
|
766 |
#ifndef QT_NO_EXCEPTIONS
|
|
767 |
CActiveScheduler::Current()->Error(qt_symbian_exception2Error(ex));
|
|
768 |
#endif
|
|
769 |
}
|
|
770 |
|
|
771 |
m_noSocketEvents = oldNoSocketEventsValue;
|
|
772 |
|
|
773 |
return handledAnyEvent;
|
|
774 |
}
|
|
775 |
|
|
776 |
void QEventDispatcherSymbian::timerFired(int timerId)
|
|
777 |
{
|
|
778 |
QHash<int, SymbianTimerInfoPtr>::iterator i = m_timerList.find(timerId);
|
|
779 |
if (i == m_timerList.end()) {
|
|
780 |
// The timer has been deleted. Ignore this event.
|
|
781 |
return;
|
|
782 |
}
|
|
783 |
|
|
784 |
SymbianTimerInfoPtr timerInfo = *i;
|
|
785 |
|
|
786 |
// Prevent infinite timer recursion.
|
|
787 |
if (timerInfo->inTimerEvent) {
|
|
788 |
return;
|
|
789 |
}
|
|
790 |
|
|
791 |
timerInfo->inTimerEvent = true;
|
|
792 |
|
|
793 |
QTimerEvent event(timerInfo->timerId);
|
|
794 |
QCoreApplication::sendEvent(timerInfo->receiver, &event);
|
|
795 |
|
|
796 |
timerInfo->inTimerEvent = false;
|
|
797 |
|
|
798 |
return;
|
|
799 |
}
|
|
800 |
|
|
801 |
void QEventDispatcherSymbian::socketFired(QSocketActiveObject *socketAO)
|
|
802 |
{
|
|
803 |
if (m_noSocketEvents) {
|
|
804 |
m_deferredSocketEvents.append(socketAO);
|
|
805 |
return;
|
|
806 |
}
|
|
807 |
|
|
808 |
QEvent e(QEvent::SockAct);
|
|
809 |
socketAO->m_inSocketEvent = true;
|
|
810 |
QCoreApplication::sendEvent(socketAO->m_notifier, &e);
|
|
811 |
socketAO->m_inSocketEvent = false;
|
|
812 |
|
|
813 |
if (socketAO->m_deleteLater) {
|
|
814 |
delete socketAO;
|
|
815 |
} else {
|
|
816 |
socketAO->iStatus = KRequestPending;
|
|
817 |
socketAO->SetActive();
|
|
818 |
reactivateSocketNotifier(socketAO->m_notifier);
|
|
819 |
}
|
|
820 |
}
|
|
821 |
|
|
822 |
void QEventDispatcherSymbian::wakeUpWasCalled()
|
|
823 |
{
|
|
824 |
// The reactivation should happen in RunL, right before the call to this function.
|
|
825 |
// This is because m_wakeUpDone is the "signal" that the object can be completed
|
|
826 |
// once more.
|
|
827 |
// Also, by dispatching the posted events after resetting m_wakeUpDone, we guarantee
|
|
828 |
// that no posted event notification will be lost. If we did it the other way
|
|
829 |
// around, it would be possible for another thread to post an event right after
|
|
830 |
// the sendPostedEvents was done, but before the object was ready to be completed
|
|
831 |
// again. This could deadlock the application if there are no other posted events.
|
|
832 |
m_wakeUpDone.fetchAndStoreOrdered(0);
|
|
833 |
sendPostedEvents();
|
|
834 |
}
|
|
835 |
|
|
836 |
void QEventDispatcherSymbian::interrupt()
|
|
837 |
{
|
|
838 |
m_interrupt = true;
|
|
839 |
wakeUp();
|
|
840 |
}
|
|
841 |
|
|
842 |
void QEventDispatcherSymbian::wakeUp()
|
|
843 |
{
|
|
844 |
Q_D(QAbstractEventDispatcher);
|
|
845 |
|
|
846 |
if (m_wakeUpAO && m_wakeUpDone.testAndSetAcquire(0, 1)) {
|
|
847 |
TRequestStatus *status = &m_wakeUpAO->iStatus;
|
|
848 |
QEventDispatcherSymbian::RequestComplete(d->threadData->symbian_thread_handle, status, KErrNone);
|
|
849 |
}
|
|
850 |
}
|
|
851 |
|
|
852 |
bool QEventDispatcherSymbian::sendPostedEvents()
|
|
853 |
{
|
|
854 |
Q_D(QAbstractEventDispatcher);
|
|
855 |
|
|
856 |
// moveToThread calls this and canWait == true -> Events will never get processed
|
|
857 |
// if we check for d->threadData->canWait
|
|
858 |
//
|
|
859 |
// QCoreApplication::postEvent sets canWait = false, but after the object and events
|
|
860 |
// are moved to a new thread, the canWait in new thread is true i.e. not changed to reflect
|
|
861 |
// the flag on old thread. That's why events in a new thread will not get processed.
|
|
862 |
// This migth be actually bug in moveToThread functionality, but because other platforms
|
|
863 |
// do not check canWait in wakeUp (where we essentially are now) - decided to remove it from
|
|
864 |
// here as well.
|
|
865 |
|
|
866 |
//if (!d->threadData->canWait) {
|
|
867 |
QCoreApplicationPrivate::sendPostedEvents(0, 0, d->threadData);
|
|
868 |
return true;
|
|
869 |
//}
|
|
870 |
//return false;
|
|
871 |
}
|
|
872 |
|
|
873 |
inline void QEventDispatcherSymbian::addDeferredActiveObject(QActiveObject *object)
|
|
874 |
{
|
|
875 |
if (m_deferredActiveObjects.isEmpty()) {
|
|
876 |
m_completeDeferredAOs->complete();
|
|
877 |
}
|
|
878 |
m_deferredActiveObjects.append(object);
|
|
879 |
}
|
|
880 |
|
|
881 |
inline void QEventDispatcherSymbian::removeDeferredActiveObject(QActiveObject *object)
|
|
882 |
{
|
|
883 |
m_deferredActiveObjects.removeAll(object);
|
|
884 |
}
|
|
885 |
|
|
886 |
void QEventDispatcherSymbian::reactivateDeferredActiveObjects()
|
|
887 |
{
|
|
888 |
while (!m_deferredActiveObjects.isEmpty()) {
|
|
889 |
QActiveObject *object = m_deferredActiveObjects.takeFirst();
|
|
890 |
object->reactivateAndComplete();
|
|
891 |
}
|
|
892 |
|
|
893 |
// We do this because we want to return from processEvents. This is because
|
|
894 |
// each invocation of processEvents should only run each active object once.
|
|
895 |
// The active scheduler should run them continously, however.
|
|
896 |
m_interrupt = true;
|
|
897 |
}
|
|
898 |
|
|
899 |
bool QEventDispatcherSymbian::sendDeferredSocketEvents()
|
|
900 |
{
|
|
901 |
bool sentAnyEvents = false;
|
|
902 |
while (!m_deferredSocketEvents.isEmpty()) {
|
|
903 |
sentAnyEvents = true;
|
|
904 |
socketFired(m_deferredSocketEvents.takeFirst());
|
|
905 |
}
|
|
906 |
|
|
907 |
return sentAnyEvents;
|
|
908 |
}
|
|
909 |
|
|
910 |
void QEventDispatcherSymbian::flush()
|
|
911 |
{
|
|
912 |
}
|
|
913 |
|
|
914 |
bool QEventDispatcherSymbian::hasPendingEvents()
|
|
915 |
{
|
|
916 |
Q_D(QAbstractEventDispatcher);
|
|
917 |
return (d->threadData->symbian_thread_handle.RequestCount() != 0
|
|
918 |
|| !d->threadData->canWait || !m_deferredSocketEvents.isEmpty());
|
|
919 |
}
|
|
920 |
|
|
921 |
void QEventDispatcherSymbian::registerSocketNotifier ( QSocketNotifier * notifier )
|
|
922 |
{
|
|
923 |
QSocketActiveObject *socketAO = q_check_ptr(new QSocketActiveObject(this, notifier));
|
|
924 |
m_notifiers.insert(notifier, socketAO);
|
|
925 |
m_selectThread.requestSocketEvents(notifier, &socketAO->iStatus);
|
|
926 |
}
|
|
927 |
|
|
928 |
void QEventDispatcherSymbian::unregisterSocketNotifier ( QSocketNotifier * notifier )
|
|
929 |
{
|
|
930 |
m_selectThread.cancelSocketEvents(notifier);
|
|
931 |
if (m_notifiers.contains(notifier)) {
|
|
932 |
QSocketActiveObject *sockObj = *m_notifiers.find(notifier);
|
|
933 |
m_deferredSocketEvents.removeAll(sockObj);
|
|
934 |
sockObj->deleteLater();
|
|
935 |
m_notifiers.remove(notifier);
|
|
936 |
}
|
|
937 |
}
|
|
938 |
|
|
939 |
void QEventDispatcherSymbian::reactivateSocketNotifier(QSocketNotifier *notifier)
|
|
940 |
{
|
|
941 |
m_selectThread.requestSocketEvents(notifier, &m_notifiers[notifier]->iStatus);
|
|
942 |
}
|
|
943 |
|
|
944 |
void QEventDispatcherSymbian::registerTimer ( int timerId, int interval, QObject * object )
|
|
945 |
{
|
|
946 |
if (interval < 0) {
|
|
947 |
qWarning("Timer interval < 0");
|
|
948 |
interval = 0;
|
|
949 |
}
|
|
950 |
|
|
951 |
SymbianTimerInfoPtr timer(new SymbianTimerInfo);
|
|
952 |
timer->timerId = timerId;
|
|
953 |
timer->interval = interval;
|
|
954 |
timer->inTimerEvent = false;
|
|
955 |
timer->receiver = object;
|
|
956 |
timer->dispatcher = this;
|
|
957 |
timer->timerAO = q_check_ptr(new QTimerActiveObject(this, timer.data()));
|
|
958 |
m_timerList.insert(timerId, timer);
|
|
959 |
|
|
960 |
timer->timerAO->Start();
|
|
961 |
}
|
|
962 |
|
|
963 |
bool QEventDispatcherSymbian::unregisterTimer ( int timerId )
|
|
964 |
{
|
|
965 |
if (!m_timerList.contains(timerId)) {
|
|
966 |
return false;
|
|
967 |
}
|
|
968 |
|
|
969 |
SymbianTimerInfoPtr timerInfo = m_timerList.take(timerId);
|
|
970 |
|
|
971 |
if (!QObjectPrivate::get(timerInfo->receiver)->inThreadChangeEvent)
|
|
972 |
QAbstractEventDispatcherPrivate::releaseTimerId(timerId);
|
|
973 |
|
|
974 |
return true;
|
|
975 |
}
|
|
976 |
|
|
977 |
bool QEventDispatcherSymbian::unregisterTimers ( QObject * object )
|
|
978 |
{
|
|
979 |
if (m_timerList.isEmpty())
|
|
980 |
return false;
|
|
981 |
|
|
982 |
bool unregistered = false;
|
|
983 |
for (QHash<int, SymbianTimerInfoPtr>::iterator i = m_timerList.begin(); i != m_timerList.end(); ) {
|
|
984 |
if ((*i)->receiver == object) {
|
|
985 |
i = m_timerList.erase(i);
|
|
986 |
unregistered = true;
|
|
987 |
} else {
|
|
988 |
++i;
|
|
989 |
}
|
|
990 |
}
|
|
991 |
|
|
992 |
return unregistered;
|
|
993 |
}
|
|
994 |
|
|
995 |
QList<QEventDispatcherSymbian::TimerInfo> QEventDispatcherSymbian::registeredTimers ( QObject * object ) const
|
|
996 |
{
|
|
997 |
QList<TimerInfo> list;
|
|
998 |
for (QHash<int, SymbianTimerInfoPtr>::const_iterator i = m_timerList.begin(); i != m_timerList.end(); ++i) {
|
|
999 |
if ((*i)->receiver == object) {
|
|
1000 |
list.push_back(TimerInfo((*i)->timerId, (*i)->interval));
|
|
1001 |
}
|
|
1002 |
}
|
|
1003 |
|
|
1004 |
return list;
|
|
1005 |
}
|
|
1006 |
|
|
1007 |
/*
|
|
1008 |
* This active scheduler class implements a simple report and continue policy, for Symbian OS leaves
|
|
1009 |
* or exceptions from Qt that fall back to the scheduler.
|
|
1010 |
* It will be used in cases where there is no existing active scheduler installed.
|
|
1011 |
* Apps which link to qts60main.lib will have the UI active scheduler installed in the main thread
|
|
1012 |
* instead of this one. But this would be used in other threads in the UI.
|
|
1013 |
* An app could replace this behaviour by installing an alternative active scheduler.
|
|
1014 |
*/
|
|
1015 |
void CQtActiveScheduler::Error(TInt aError) const
|
|
1016 |
{
|
|
1017 |
QT_TRY {
|
|
1018 |
qWarning("Error from active scheduler %d", aError);
|
|
1019 |
}
|
|
1020 |
QT_CATCH (const std::bad_alloc&) {} // ignore alloc fails, nothing more can be done
|
|
1021 |
}
|
|
1022 |
|
|
1023 |
QT_END_NAMESPACE
|