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Diffstat (limited to 'src/corelib/kernel/qeventdispatcher_unix_p.h')
| -rw-r--r-- | src/corelib/kernel/qeventdispatcher_unix_p.h | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/src/corelib/kernel/qeventdispatcher_unix_p.h b/src/corelib/kernel/qeventdispatcher_unix_p.h new file mode 100644 index 0000000..41329cf --- /dev/null +++ b/src/corelib/kernel/qeventdispatcher_unix_p.h @@ -0,0 +1,246 @@ +/**************************************************************************** +** +** 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 |