1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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4 | ** All rights reserved.
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5 | ** Contact: Nokia Corporation ([email protected])
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6 | **
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7 | ** This file is part of the QtCore module of the Qt Toolkit.
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8 | **
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9 | ** $QT_BEGIN_LICENSE:LGPL$
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10 | ** Commercial Usage
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11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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12 | ** accordance with the Qt Commercial License Agreement provided with the
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13 | ** Software or, alternatively, in accordance with the terms contained in
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14 | ** a written agreement between you and Nokia.
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15 | **
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16 | ** GNU Lesser General Public License Usage
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17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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18 | ** General Public License version 2.1 as published by the Free Software
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19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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20 | ** packaging of this file. Please review the following information to
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21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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23 | **
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24 | ** In addition, as a special exception, Nokia gives you certain additional
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25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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27 | **
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28 | ** GNU General Public License Usage
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29 | ** Alternatively, this file may be used under the terms of the GNU
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30 | ** General Public License version 3.0 as published by the Free Software
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31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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32 | ** packaging of this file. Please review the following information to
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33 | ** ensure the GNU General Public License version 3.0 requirements will be
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34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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35 | **
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36 | ** If you have questions regarding the use of this file, please contact
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37 | ** Nokia at [email protected].
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38 | ** $QT_END_LICENSE$
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39 | **
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40 | ****************************************************************************/
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41 |
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42 | #ifndef QEVENTDISPATCHER_UNIX_P_H
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43 | #define QEVENTDISPATCHER_UNIX_P_H
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44 |
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45 | //
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46 | // W A R N I N G
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47 | // -------------
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48 | //
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49 | // This file is not part of the Qt API. It exists purely as an
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50 | // implementation detail. This header file may change from version to
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51 | // version without notice, or even be removed.
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52 | //
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53 | // We mean it.
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54 | //
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55 |
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56 | #include "QtCore/qabstracteventdispatcher.h"
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57 | #include "QtCore/qlist.h"
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58 | #include "private/qabstracteventdispatcher_p.h"
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59 | #include "private/qcore_unix_p.h"
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60 | #include "private/qpodlist_p.h"
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61 | #include "QtCore/qvarlengtharray.h"
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62 |
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63 | #if defined(Q_OS_VXWORKS)
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64 | # include <sys/times.h>
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65 | #else
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66 | # include <sys/time.h>
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67 | # if !defined(Q_OS_HPUX) || defined(__ia64)
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68 | # include <sys/select.h>
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69 | # endif
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70 | #endif
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71 |
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72 | QT_BEGIN_NAMESPACE
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73 |
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74 | // internal timer info
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75 | struct QTimerInfo {
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76 | int id; // - timer identifier
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77 | timeval interval; // - timer interval
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78 | timeval timeout; // - when to sent event
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79 | QObject *obj; // - object to receive event
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80 | QTimerInfo **activateRef; // - ref from activateTimers
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81 | };
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82 |
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83 | class QTimerInfoList : public QList<QTimerInfo*>
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84 | {
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85 | #if ((_POSIX_MONOTONIC_CLOCK-0 <= 0) && !defined(Q_OS_MAC)) || defined(QT_BOOTSTRAPPED)
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86 | timeval previousTime;
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87 | clock_t previousTicks;
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88 | int ticksPerSecond;
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89 | int msPerTick;
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90 |
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91 | bool timeChanged(timeval *delta);
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92 | #endif
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93 |
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94 | // state variables used by activateTimers()
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95 | QTimerInfo *firstTimerInfo;
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96 |
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97 | public:
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98 | QTimerInfoList();
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99 |
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100 | timeval currentTime;
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101 | timeval updateCurrentTime();
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102 |
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103 | // must call updateCurrentTime() first!
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104 | void repairTimersIfNeeded();
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105 |
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106 | bool timerWait(timeval &);
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107 | void timerInsert(QTimerInfo *);
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108 | void timerRepair(const timeval &);
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109 |
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110 | void registerTimer(int timerId, int interval, QObject *object);
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111 | bool unregisterTimer(int timerId);
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112 | bool unregisterTimers(QObject *object);
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113 | QList<QPair<int, int> > registeredTimers(QObject *object) const;
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114 |
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115 | int activateTimers();
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116 | };
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117 |
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118 | struct QSockNot
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119 | {
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120 | QSocketNotifier *obj;
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121 | int fd;
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122 | fd_set *queue;
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123 | };
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124 |
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125 | class QSockNotType
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126 | {
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127 | public:
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128 | QSockNotType();
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129 | ~QSockNotType();
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130 |
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131 | typedef QPodList<QSockNot*, 32> List;
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132 |
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133 | List list;
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134 | fd_set select_fds;
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135 | fd_set enabled_fds;
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136 | fd_set pending_fds;
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137 |
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138 | };
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139 |
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140 | class QEventDispatcherUNIXPrivate;
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141 |
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142 | class Q_CORE_EXPORT QEventDispatcherUNIX : public QAbstractEventDispatcher
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143 | {
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144 | Q_OBJECT
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145 | Q_DECLARE_PRIVATE(QEventDispatcherUNIX)
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146 |
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147 | public:
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148 | explicit QEventDispatcherUNIX(QObject *parent = 0);
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149 | ~QEventDispatcherUNIX();
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150 |
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151 | bool processEvents(QEventLoop::ProcessEventsFlags flags);
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152 | bool hasPendingEvents();
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153 |
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154 | void registerSocketNotifier(QSocketNotifier *notifier);
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155 | void unregisterSocketNotifier(QSocketNotifier *notifier);
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156 |
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157 | void registerTimer(int timerId, int interval, QObject *object);
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158 | bool unregisterTimer(int timerId);
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159 | bool unregisterTimers(QObject *object);
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160 | QList<TimerInfo> registeredTimers(QObject *object) const;
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161 |
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162 | void wakeUp();
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163 | void interrupt();
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164 | void flush();
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165 |
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166 | protected:
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167 | QEventDispatcherUNIX(QEventDispatcherUNIXPrivate &dd, QObject *parent = 0);
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168 |
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169 | void setSocketNotifierPending(QSocketNotifier *notifier);
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170 |
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171 | int activateTimers();
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172 | int activateSocketNotifiers();
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173 |
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174 | virtual int select(int nfds,
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175 | fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
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176 | timeval *timeout);
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177 | };
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178 |
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179 | class Q_CORE_EXPORT QEventDispatcherUNIXPrivate : public QAbstractEventDispatcherPrivate
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180 | {
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181 | Q_DECLARE_PUBLIC(QEventDispatcherUNIX)
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182 |
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183 | public:
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184 | QEventDispatcherUNIXPrivate();
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185 | ~QEventDispatcherUNIXPrivate();
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186 |
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187 | int doSelect(QEventLoop::ProcessEventsFlags flags, timeval *timeout);
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188 |
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189 | bool mainThread;
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190 | int thread_pipe[2];
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191 |
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192 | // highest fd for all socket notifiers
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193 | int sn_highest;
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194 | // 3 socket notifier types - read, write and exception
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195 | QSockNotType sn_vec[3];
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196 |
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197 | QTimerInfoList timerList;
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198 |
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199 | // pending socket notifiers list
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200 | QSockNotType::List sn_pending_list;
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201 |
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202 | QAtomicInt wakeUps;
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203 | bool interrupt;
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204 | };
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205 |
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206 | QT_END_NAMESPACE
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207 |
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208 | #endif // QEVENTDISPATCHER_UNIX_P_H
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