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authoraxis <qt-info@nokia.com>2009-04-24 11:34:15 (GMT)
committeraxis <qt-info@nokia.com>2009-04-24 11:34:15 (GMT)
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treea17e1a767a89542ab59907462206d7dcf2e504b2 /src/corelib/kernel/qeventdispatcher_unix_p.h
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Long live Qt for S60!
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QEVENTDISPATCHER_UNIX_P_H
+#define QEVENTDISPATCHER_UNIX_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/qabstracteventdispatcher.h"
+#include "QtCore/qlist.h"
+#include "private/qabstracteventdispatcher_p.h"
+#include "private/qpodlist_p.h"
+
+#include <sys/types.h>
+#include <sys/time.h>
+#if !defined(Q_OS_HPUX) || defined(__ia64)
+#include <sys/select.h>
+#endif
+#include <unistd.h>
+
+QT_BEGIN_NAMESPACE
+#if !defined(_POSIX_MONOTONIC_CLOCK)
+# define _POSIX_MONOTONIC_CLOCK -1
+#endif
+
+// Internal operator functions for timevals
+inline bool operator<(const timeval &t1, const timeval &t2)
+{ return t1.tv_sec < t2.tv_sec || (t1.tv_sec == t2.tv_sec && t1.tv_usec < t2.tv_usec); }
+inline bool operator==(const timeval &t1, const timeval &t2)
+{ return t1.tv_sec == t2.tv_sec && t1.tv_usec == t2.tv_usec; }
+inline timeval &operator+=(timeval &t1, const timeval &t2)
+{
+ t1.tv_sec += t2.tv_sec;
+ if ((t1.tv_usec += t2.tv_usec) >= 1000000l) {
+ ++t1.tv_sec;
+ t1.tv_usec -= 1000000l;
+ }
+ return t1;
+}
+inline timeval operator+(const timeval &t1, const timeval &t2)
+{
+ timeval tmp;
+ tmp.tv_sec = t1.tv_sec + t2.tv_sec;
+ if ((tmp.tv_usec = t1.tv_usec + t2.tv_usec) >= 1000000l) {
+ ++tmp.tv_sec;
+ tmp.tv_usec -= 1000000l;
+ }
+ return tmp;
+}
+inline timeval operator-(const timeval &t1, const timeval &t2)
+{
+ timeval tmp;
+ tmp.tv_sec = t1.tv_sec - t2.tv_sec;
+ if ((tmp.tv_usec = t1.tv_usec - t2.tv_usec) < 0l) {
+ --tmp.tv_sec;
+ tmp.tv_usec += 1000000l;
+ }
+ return tmp;
+}
+
+// internal timer info
+struct QTimerInfo {
+ int id; // - timer identifier
+ timeval interval; // - timer interval
+ timeval timeout; // - when to sent event
+ QObject *obj; // - object to receive event
+ bool inTimerEvent;
+};
+
+class QTimerInfoList : public QList<QTimerInfo*>
+{
+#if (_POSIX_MONOTONIC_CLOCK-0 <= 0) || defined(QT_BOOTSTRAPPED)
+ bool useMonotonicTimers;
+
+ timeval previousTime;
+ clock_t previousTicks;
+ int ticksPerSecond;
+ int msPerTick;
+
+ bool timeChanged(timeval *delta);
+#endif
+
+ // state variables used by activateTimers()
+ QTimerInfo *firstTimerInfo, *currentTimerInfo;
+
+public:
+ QTimerInfoList();
+
+ void getTime(timeval &t);
+
+ timeval currentTime;
+ timeval updateCurrentTime();
+
+ // must call updateCurrentTime() first!
+ void repairTimersIfNeeded();
+
+ bool timerWait(timeval &);
+ void timerInsert(QTimerInfo *);
+ void timerRepair(const timeval &);
+
+ void registerTimer(int timerId, int interval, QObject *object);
+ bool unregisterTimer(int timerId);
+ bool unregisterTimers(QObject *object);
+ QList<QPair<int, int> > registeredTimers(QObject *object) const;
+
+ int activateTimers();
+};
+
+struct Q_CORE_EXPORT QSockNot
+{
+ QSocketNotifier *obj;
+ int fd;
+ fd_set *queue;
+};
+
+class Q_CORE_EXPORT QSockNotType
+{
+public:
+ QSockNotType();
+ ~QSockNotType();
+
+ typedef QPodList<QSockNot*, 32> List;
+
+ List list;
+ fd_set select_fds;
+ fd_set enabled_fds;
+ fd_set pending_fds;
+
+};
+
+class QEventDispatcherUNIXPrivate;
+
+class Q_CORE_EXPORT QEventDispatcherUNIX : public QAbstractEventDispatcher
+{
+ Q_OBJECT
+ Q_DECLARE_PRIVATE(QEventDispatcherUNIX)
+
+public:
+ explicit QEventDispatcherUNIX(QObject *parent = 0);
+ ~QEventDispatcherUNIX();
+
+ bool processEvents(QEventLoop::ProcessEventsFlags flags);
+ bool hasPendingEvents();
+
+ void registerSocketNotifier(QSocketNotifier *notifier);
+ void unregisterSocketNotifier(QSocketNotifier *notifier);
+
+ void registerTimer(int timerId, int interval, QObject *object);
+ bool unregisterTimer(int timerId);
+ bool unregisterTimers(QObject *object);
+ QList<TimerInfo> registeredTimers(QObject *object) const;
+
+ void wakeUp();
+ void interrupt();
+ void flush();
+
+protected:
+ QEventDispatcherUNIX(QEventDispatcherUNIXPrivate &dd, QObject *parent = 0);
+
+ void setSocketNotifierPending(QSocketNotifier *notifier);
+
+ int activateTimers();
+ int activateSocketNotifiers();
+
+ virtual int select(int nfds,
+ fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
+ timeval *timeout);
+};
+
+class Q_CORE_EXPORT QEventDispatcherUNIXPrivate : public QAbstractEventDispatcherPrivate
+{
+ Q_DECLARE_PUBLIC(QEventDispatcherUNIX)
+
+public:
+ QEventDispatcherUNIXPrivate();
+ ~QEventDispatcherUNIXPrivate();
+
+ int doSelect(QEventLoop::ProcessEventsFlags flags, timeval *timeout);
+
+ bool mainThread;
+ int thread_pipe[2];
+
+ // highest fd for all socket notifiers
+ int sn_highest;
+ // 3 socket notifier types - read, write and exception
+ QSockNotType sn_vec[3];
+
+ QTimerInfoList timerList;
+
+ // pending socket notifiers list
+ QSockNotType::List sn_pending_list;
+
+ QAtomicInt wakeUps;
+ bool interrupt;
+};
+
+QT_END_NAMESPACE
+
+#endif // QEVENTDISPATCHER_UNIX_P_H