1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtCore module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see http://www.qt.io/terms-conditions. For further 15 ** information use the contact form at http://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 2.1 or version 3 as published by the Free 20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and 21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the 22 ** following information to ensure the GNU Lesser General Public License 23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and 24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 25 ** 26 ** As a special exception, The Qt Company gives you certain additional 27 ** rights. These rights are described in The Qt Company LGPL Exception 28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. 29 ** 30 ** GNU General Public License Usage 31 ** Alternatively, this file may be used under the terms of the GNU 32 ** General Public License version 3.0 as published by the Free Software 33 ** Foundation and appearing in the file LICENSE.GPL included in the 34 ** packaging of this file. Please review the following information to 35 ** ensure the GNU General Public License version 3.0 requirements will be 36 ** met: http://www.gnu.org/copyleft/gpl.html. 37 ** 38 ** $QT_END_LICENSE$ 39 ** 40 ****************************************************************************/ 41 42 #ifndef QEVENTDISPATCHER_UNIX_P_H 43 #define QEVENTDISPATCHER_UNIX_P_H 44 45 // 46 // W A R N I N G 47 // ------------- 48 // 49 // This file is not part of the Qt API. It exists purely as an 50 // implementation detail. This header file may change from version to 51 // version without notice, or even be removed. 52 // 53 // We mean it. 54 // 55 56 #include "QtCore/qabstracteventdispatcher.h" 57 #include "QtCore/qlist.h" 58 #include "private/qabstracteventdispatcher_p.h" 59 #include "private/qcore_unix_p.h" 60 #include "private/qpodlist_p.h" 61 #include "QtCore/qvarlengtharray.h" 62 63 #if !defined(Q_OS_VXWORKS) 64 # include <sys/time.h> 65 # if (!defined(Q_OS_HPUX) || defined(__ia64)) && !defined(Q_OS_NACL) 66 # include <sys/select.h> 67 # endif 68 #endif 69 70 QT_BEGIN_NAMESPACE 71 72 // internal timer info 73 struct QTimerInfo { 74 int id; // - timer identifier 75 timeval interval; // - timer interval 76 timeval timeout; // - when to sent event 77 QObject *obj; // - object to receive event 78 QTimerInfo **activateRef; // - ref from activateTimers 79 }; 80 81 class QTimerInfoList : public QList<QTimerInfo*> 82 { 83 #if ((_POSIX_MONOTONIC_CLOCK-0 <= 0) && !defined(Q_OS_MAC)) || defined(QT_BOOTSTRAPPED) 84 timeval previousTime; 85 clock_t previousTicks; 86 int ticksPerSecond; 87 int msPerTick; 88 89 bool timeChanged(timeval *delta); 90 #endif 91 92 // state variables used by activateTimers() 93 QTimerInfo *firstTimerInfo; 94 95 public: 96 QTimerInfoList(); 97 98 timeval currentTime; 99 timeval updateCurrentTime(); 100 101 // must call updateCurrentTime() first! 102 void repairTimersIfNeeded(); 103 104 bool timerWait(timeval &); 105 void timerInsert(QTimerInfo *); 106 void timerRepair(const timeval &); 107 108 void registerTimer(int timerId, int interval, QObject *object); 109 bool unregisterTimer(int timerId); 110 bool unregisterTimers(QObject *object); 111 QList<QPair<int, int> > registeredTimers(QObject *object) const; 112 113 int activateTimers(); 114 }; 115 116 struct QSockNot 117 { 118 QSocketNotifier *obj; 119 int fd; 120 fd_set *queue; 121 }; 122 123 class QSockNotType 124 { 125 public: 126 QSockNotType(); 127 ~QSockNotType(); 128 129 typedef QPodList<QSockNot*, 32> List; 130 131 List list; 132 fd_set select_fds; 133 fd_set enabled_fds; 134 fd_set pending_fds; 135 136 }; 137 138 class QEventDispatcherUNIXPrivate; 139 140 class Q_CORE_EXPORT QEventDispatcherUNIX : public QAbstractEventDispatcher 141 { 142 Q_OBJECT 143 Q_DECLARE_PRIVATE(QEventDispatcherUNIX) 144 145 public: 146 explicit QEventDispatcherUNIX(QObject *parent = 0); 147 ~QEventDispatcherUNIX(); 148 149 bool processEvents(QEventLoop::ProcessEventsFlags flags); 150 bool hasPendingEvents(); 151 152 void registerSocketNotifier(QSocketNotifier *notifier); 153 void unregisterSocketNotifier(QSocketNotifier *notifier); 154 155 void registerTimer(int timerId, int interval, QObject *object); 156 bool unregisterTimer(int timerId); 157 bool unregisterTimers(QObject *object); 158 QList<TimerInfo> registeredTimers(QObject *object) const; 159 160 void wakeUp(); 161 void interrupt(); 162 void flush(); 163 164 protected: 165 QEventDispatcherUNIX(QEventDispatcherUNIXPrivate &dd, QObject *parent = 0); 166 167 void setSocketNotifierPending(QSocketNotifier *notifier); 168 169 int activateTimers(); 170 int activateSocketNotifiers(); 171 172 virtual int select(int nfds, 173 fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 174 timeval *timeout); 175 }; 176 177 class Q_CORE_EXPORT QEventDispatcherUNIXPrivate : public QAbstractEventDispatcherPrivate 178 { 179 Q_DECLARE_PUBLIC(QEventDispatcherUNIX) 180 181 public: 182 QEventDispatcherUNIXPrivate(); 183 ~QEventDispatcherUNIXPrivate(); 184 185 int doSelect(QEventLoop::ProcessEventsFlags flags, timeval *timeout); 186 virtual int initThreadWakeUp(); 187 virtual int processThreadWakeUp(int nsel); 188 189 bool mainThread; 190 int thread_pipe[2]; 191 192 // highest fd for all socket notifiers 193 int sn_highest; 194 // 3 socket notifier types - read, write and exception 195 QSockNotType sn_vec[3]; 196 197 QTimerInfoList timerList; 198 199 // pending socket notifiers list 200 QSockNotType::List sn_pending_list; 201 202 QAtomicInt wakeUps; 203 bool interrupt; 204 }; 205 206 QT_END_NAMESPACE 207 208 #endif // QEVENTDISPATCHER_UNIX_P_H 209