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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the Qt3Support module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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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 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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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 #include "qplatformdefs.h" |
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43 |
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44 // Solaris redefines connect -> __xnet_connect with _XOPEN_SOURCE_EXTENDED. |
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45 #if defined(connect) |
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46 #undef connect |
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47 #endif |
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48 |
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49 #include "q3process.h" |
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50 |
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51 #ifndef QT_NO_PROCESS |
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52 |
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53 #include "qapplication.h" |
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54 #include "q3cstring.h" |
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55 #include "q3ptrqueue.h" |
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56 #include "q3ptrlist.h" |
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57 #include "qsocketnotifier.h" |
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58 #include "qtimer.h" |
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59 #include "q3cleanuphandler.h" |
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60 #include "qregexp.h" |
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61 #include "private/q3membuf_p.h" |
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62 #include "private/qobject_p.h" |
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63 #include "private/qcore_unix_p.h" |
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64 |
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65 #include <stdlib.h> |
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66 #include <errno.h> |
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67 #include <sys/types.h> |
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68 |
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69 QT_BEGIN_NAMESPACE |
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70 |
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71 #ifdef __MIPSEL__ |
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72 # ifndef SOCK_DGRAM |
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73 # define SOCK_DGRAM 1 |
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74 # endif |
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75 # ifndef SOCK_STREAM |
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76 # define SOCK_STREAM 2 |
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77 # endif |
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78 #endif |
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79 |
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80 //#define QT_Q3PROCESS_DEBUG |
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81 |
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82 |
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83 #ifdef Q_C_CALLBACKS |
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84 extern "C" { |
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85 #endif // Q_C_CALLBACKS |
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86 |
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87 static QT_SIGNAL_RETTYPE qt_C_sigchldHnd(QT_SIGNAL_ARGS); |
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88 |
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89 #ifdef Q_C_CALLBACKS |
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90 } |
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91 #endif // Q_C_CALLBACKS |
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92 |
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93 |
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94 class QProc; |
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95 class Q3ProcessManager; |
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96 class Q3ProcessPrivate |
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97 { |
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98 public: |
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99 Q3ProcessPrivate(); |
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100 ~Q3ProcessPrivate(); |
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101 |
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102 void closeOpenSocketsForChild(); |
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103 void newProc( pid_t pid, Q3Process *process ); |
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104 |
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105 Q3Membuf bufStdout; |
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106 Q3Membuf bufStderr; |
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107 |
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108 Q3PtrQueue<QByteArray> stdinBuf; |
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109 |
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110 QSocketNotifier *notifierStdin; |
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111 QSocketNotifier *notifierStdout; |
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112 QSocketNotifier *notifierStderr; |
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113 |
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114 ssize_t stdinBufRead; |
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115 QProc *proc; |
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116 |
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117 bool exitValuesCalculated; |
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118 bool socketReadCalled; |
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119 |
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120 static Q3ProcessManager *procManager; |
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121 }; |
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122 |
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123 |
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124 /*********************************************************************** |
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125 * |
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126 * QProc |
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127 * |
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128 **********************************************************************/ |
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129 /* |
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130 The class Q3Process does not necessarily map exactly to the running |
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131 child processes: if the process is finished, the Q3Process class may still be |
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132 there; furthermore a user can use Q3Process to start more than one process. |
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133 |
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134 The helper-class QProc has the semantics that one instance of this class maps |
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135 directly to a running child process. |
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136 */ |
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137 class QProc |
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138 { |
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139 public: |
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140 QProc( pid_t p, Q3Process *proc=0 ) : pid(p), process(proc) |
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141 { |
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142 #if defined(QT_Q3PROCESS_DEBUG) |
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143 qDebug( "QProc: Constructor for pid %d and Q3Process %p", pid, process ); |
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144 #endif |
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145 socketStdin = 0; |
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146 socketStdout = 0; |
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147 socketStderr = 0; |
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148 } |
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149 ~QProc() |
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150 { |
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151 #if defined(QT_Q3PROCESS_DEBUG) |
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152 qDebug( "QProc: Destructor for pid %d and Q3Process %p", pid, process ); |
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153 #endif |
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154 if ( process ) { |
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155 if ( process->d->notifierStdin ) |
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156 process->d->notifierStdin->setEnabled( false ); |
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157 if ( process->d->notifierStdout ) |
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158 process->d->notifierStdout->setEnabled( false ); |
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159 if ( process->d->notifierStderr ) |
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160 process->d->notifierStderr->setEnabled( false ); |
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161 process->d->proc = 0; |
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162 } |
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163 if( socketStdin ) |
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164 qt_safe_close( socketStdin ); |
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165 if( socketStdout ) |
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166 qt_safe_close( socketStdout ); |
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167 if( socketStderr ) |
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168 qt_safe_close( socketStderr ); |
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169 } |
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170 |
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171 pid_t pid; |
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172 int socketStdin; |
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173 int socketStdout; |
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174 int socketStderr; |
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175 Q3Process *process; |
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176 }; |
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177 |
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178 /*********************************************************************** |
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179 * |
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180 * Q3ProcessManager |
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181 * |
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182 **********************************************************************/ |
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183 class Q3ProcessManager : public QObject |
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184 { |
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185 Q_OBJECT |
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186 |
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187 public: |
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188 Q3ProcessManager(); |
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189 ~Q3ProcessManager(); |
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190 |
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191 void append( QProc *p ); |
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192 void remove( QProc *p ); |
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193 |
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194 void cleanup(); |
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195 |
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196 public slots: |
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197 void removeMe(); |
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198 void sigchldHnd( int ); |
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199 |
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200 public: |
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201 struct sigaction oldactChld; |
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202 struct sigaction oldactPipe; |
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203 Q3PtrList<QProc> *procList; |
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204 int sigchldFd[2]; |
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205 |
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206 private: |
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207 QSocketNotifier *sn; |
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208 }; |
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209 |
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210 static void q3process_cleanup() |
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211 { |
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212 delete Q3ProcessPrivate::procManager; |
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213 Q3ProcessPrivate::procManager = 0; |
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214 } |
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215 |
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216 #ifdef Q_OS_QNX6 |
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217 #define BAILOUT qt_safe_close(tmpSocket);qt_safe_close(socketFD[1]);return -1; |
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218 int qnx6SocketPairReplacement (int socketFD[2]) { |
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219 int tmpSocket; |
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220 tmpSocket = socket (AF_INET, SOCK_STREAM, 0); |
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221 if (tmpSocket == -1) |
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222 return -1; |
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223 socketFD[1] = socket(AF_INET, SOCK_STREAM, 0); |
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224 if (socketFD[1] == -1) { BAILOUT }; |
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225 |
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226 sockaddr_in ipAddr; |
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227 memset(&ipAddr, 0, sizeof(ipAddr)); |
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228 ipAddr.sin_family = AF_INET; |
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229 ipAddr.sin_addr.s_addr = INADDR_ANY; |
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230 |
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231 int socketOptions = 1; |
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232 setsockopt(tmpSocket, SOL_SOCKET, SO_REUSEADDR, &socketOptions, sizeof(int)); |
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233 |
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234 bool found = false; |
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235 for (int socketIP = 2000; (socketIP < 2500) && !(found); socketIP++) { |
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236 ipAddr.sin_port = htons(socketIP); |
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237 if (bind(tmpSocket, (struct sockaddr *)&ipAddr, sizeof(ipAddr))) |
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238 found = true; |
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239 } |
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240 |
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241 if (listen(tmpSocket, 5)) { BAILOUT }; |
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242 |
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243 // Select non-blocking mode |
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244 int originalFlags = fcntl(socketFD[1], F_GETFL, 0); |
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245 fcntl(socketFD[1], F_SETFL, originalFlags | O_NONBLOCK); |
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246 |
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247 // Request connection |
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248 if (connect(socketFD[1], (struct sockaddr*)&ipAddr, sizeof(ipAddr))) |
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249 if (errno != EINPROGRESS) { BAILOUT }; |
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250 |
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251 // Accept connection |
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252 socketFD[0] = accept(tmpSocket, (struct sockaddr *)NULL, (size_t *)NULL); |
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253 if(socketFD[0] == -1) { BAILOUT }; |
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254 |
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255 // We're done |
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256 qt_safe_close(tmpSocket); |
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257 |
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258 // Restore original flags , ie return to blocking |
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259 fcntl(socketFD[1], F_SETFL, originalFlags); |
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260 return 0; |
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261 } |
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262 #undef BAILOUT |
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263 #endif |
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264 |
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265 Q3ProcessManager::Q3ProcessManager() : sn(0) |
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266 { |
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267 procList = new Q3PtrList<QProc>; |
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268 procList->setAutoDelete( true ); |
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269 |
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270 // The SIGCHLD handler writes to a socket to tell the manager that |
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271 // something happened. This is done to get the processing in sync with the |
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272 // event reporting. |
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273 #ifndef Q_OS_QNX6 |
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274 if ( ::socketpair( AF_UNIX, SOCK_STREAM, 0, sigchldFd ) ) { |
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275 #else |
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276 if ( qnx6SocketPairReplacement (sigchldFd) ) { |
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277 #endif |
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278 sigchldFd[0] = 0; |
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279 sigchldFd[1] = 0; |
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280 } else { |
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281 #if defined(QT_Q3PROCESS_DEBUG) |
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282 qDebug( "Q3ProcessManager: install socket notifier (%d)", sigchldFd[1] ); |
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283 #endif |
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284 sn = new QSocketNotifier( sigchldFd[1], |
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285 QSocketNotifier::Read, this ); |
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286 connect( sn, SIGNAL(activated(int)), |
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287 this, SLOT(sigchldHnd(int)) ); |
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288 sn->setEnabled( true ); |
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289 } |
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290 |
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291 // install a SIGCHLD handler and ignore SIGPIPE |
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292 struct sigaction act; |
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293 |
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294 #if defined(QT_Q3PROCESS_DEBUG) |
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295 qDebug( "Q3ProcessManager: install a SIGCHLD handler" ); |
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296 #endif |
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297 act.sa_handler = qt_C_sigchldHnd; |
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298 sigemptyset( &(act.sa_mask) ); |
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299 sigaddset( &(act.sa_mask), SIGCHLD ); |
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300 act.sa_flags = SA_NOCLDSTOP; |
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301 #if defined(SA_RESTART) |
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302 act.sa_flags |= SA_RESTART; |
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303 #endif |
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304 if ( sigaction( SIGCHLD, &act, &oldactChld ) != 0 ) |
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305 qWarning( "Error installing SIGCHLD handler" ); |
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306 |
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307 #if defined(QT_Q3PROCESS_DEBUG) |
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308 qDebug( "Q3ProcessManager: install a SIGPIPE handler (SIG_IGN)" ); |
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309 #endif |
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310 act.sa_handler = QT_SIGNAL_IGNORE; |
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311 sigemptyset( &(act.sa_mask) ); |
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312 sigaddset( &(act.sa_mask), SIGPIPE ); |
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313 act.sa_flags = 0; |
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314 if ( sigaction( SIGPIPE, &act, &oldactPipe ) != 0 ) |
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315 qWarning( "Error installing SIGPIPE handler" ); |
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316 } |
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317 |
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318 Q3ProcessManager::~Q3ProcessManager() |
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319 { |
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320 delete procList; |
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321 |
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322 if ( sigchldFd[0] != 0 ) |
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323 qt_safe_close( sigchldFd[0] ); |
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324 if ( sigchldFd[1] != 0 ) |
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325 qt_safe_close( sigchldFd[1] ); |
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326 |
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327 // restore SIGCHLD handler |
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328 #if defined(QT_Q3PROCESS_DEBUG) |
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329 qDebug( "Q3ProcessManager: restore old sigchild handler" ); |
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330 #endif |
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331 if ( sigaction( SIGCHLD, &oldactChld, 0 ) != 0 ) |
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332 qWarning( "Error restoring SIGCHLD handler" ); |
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333 |
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334 #if defined(QT_Q3PROCESS_DEBUG) |
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335 qDebug( "Q3ProcessManager: restore old sigpipe handler" ); |
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336 #endif |
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337 if ( sigaction( SIGPIPE, &oldactPipe, 0 ) != 0 ) |
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338 qWarning( "Error restoring SIGPIPE handler" ); |
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339 } |
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340 |
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341 void Q3ProcessManager::append( QProc *p ) |
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342 { |
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343 procList->append( p ); |
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344 #if defined(QT_Q3PROCESS_DEBUG) |
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345 qDebug( "Q3ProcessManager: append process (procList.count(): %d)", procList->count() ); |
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346 #endif |
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347 } |
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348 |
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349 void Q3ProcessManager::remove( QProc *p ) |
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350 { |
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351 procList->remove( p ); |
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352 #if defined(QT_Q3PROCESS_DEBUG) |
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353 qDebug( "Q3ProcessManager: remove process (procList.count(): %d)", procList->count() ); |
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354 #endif |
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355 cleanup(); |
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356 } |
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357 |
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358 void Q3ProcessManager::cleanup() |
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359 { |
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360 if ( procList->count() == 0 ) { |
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361 QTimer::singleShot( 0, this, SLOT(removeMe()) ); |
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362 } |
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363 } |
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364 |
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365 void Q3ProcessManager::removeMe() |
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366 { |
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367 if ( procList->count() == 0 ) { |
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368 qRemovePostRoutine(q3process_cleanup); |
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369 Q3ProcessPrivate::procManager = 0; |
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370 delete this; |
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371 } |
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372 } |
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373 |
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374 void Q3ProcessManager::sigchldHnd( int fd ) |
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375 { |
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376 // Disable the socket notifier to make sure that this function is not |
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377 // called recursively -- this can happen, if you enter the event loop in |
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378 // the slot connected to the processExited() signal (e.g. by showing a |
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379 // modal dialog) and there are more than one process which exited in the |
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380 // meantime. |
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381 if ( sn ) { |
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382 if ( !sn->isEnabled() ) |
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383 return; |
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384 sn->setEnabled( false ); |
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385 } |
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386 |
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387 char tmp; |
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388 qt_safe_read( fd, &tmp, sizeof(tmp) ); |
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389 #if defined(QT_Q3PROCESS_DEBUG) |
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390 qDebug( "Q3ProcessManager::sigchldHnd()" ); |
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391 #endif |
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392 QProc *proc; |
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393 Q3Process *process; |
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394 bool removeProc; |
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395 proc = procList->first(); |
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396 while ( proc != 0 ) { |
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397 removeProc = false; |
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398 process = proc->process; |
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399 if ( process != 0 ) { |
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400 if ( !process->isRunning() ) { |
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401 #if defined(QT_Q3PROCESS_DEBUG) |
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402 qDebug( "Q3ProcessManager::sigchldHnd() (PID: %d): process exited (Q3Process available)", proc->pid ); |
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403 #endif |
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404 /* |
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405 Apparently, there is not consistency among different |
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406 operating systems on how to use FIONREAD. |
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407 |
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408 FreeBSD, Linux and Solaris all expect the 3rd |
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409 argument to ioctl() to be an int, which is normally |
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410 32-bit even on 64-bit machines. |
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411 |
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412 IRIX, on the other hand, expects a size_t, which is |
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413 64-bit on 64-bit machines. |
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414 |
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415 So, the solution is to use size_t initialized to |
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416 zero to make sure all bits are set to zero, |
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417 preventing underflow with the FreeBSD/Linux/Solaris |
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418 ioctls. |
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419 */ |
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420 size_t nbytes = 0; |
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421 // read pending data |
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422 if ( proc->socketStdout && ::ioctl(proc->socketStdout, FIONREAD, (char*)&nbytes)==0 && nbytes>0 ) { |
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423 #if defined(QT_Q3PROCESS_DEBUG) |
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424 qDebug( "Q3ProcessManager::sigchldHnd() (PID: %d): reading %d bytes of pending data on stdout", proc->pid, nbytes ); |
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425 #endif |
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426 process->socketRead( proc->socketStdout ); |
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427 } |
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428 nbytes = 0; |
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429 if ( proc->socketStderr && ::ioctl(proc->socketStderr, FIONREAD, (char*)&nbytes)==0 && nbytes>0 ) { |
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430 #if defined(QT_Q3PROCESS_DEBUG) |
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431 qDebug( "Q3ProcessManager::sigchldHnd() (PID: %d): reading %d bytes of pending data on stderr", proc->pid, nbytes ); |
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432 #endif |
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433 process->socketRead( proc->socketStderr ); |
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434 } |
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435 // close filedescriptors if open, and disable the |
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436 // socket notifiers |
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437 if ( proc->socketStdout ) { |
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438 qt_safe_close( proc->socketStdout ); |
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439 proc->socketStdout = 0; |
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440 if (process->d->notifierStdout) |
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441 process->d->notifierStdout->setEnabled(false); |
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442 } |
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443 if ( proc->socketStderr ) { |
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444 qt_safe_close( proc->socketStderr ); |
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445 proc->socketStderr = 0; |
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446 if (process->d->notifierStderr) |
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447 process->d->notifierStderr->setEnabled(false); |
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448 } |
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449 |
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450 if ( process->notifyOnExit ) |
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451 emit process->processExited(); |
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452 |
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453 removeProc = true; |
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454 } |
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455 } else { |
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456 int status; |
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457 if ( ::waitpid( proc->pid, &status, WNOHANG ) == proc->pid ) { |
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458 #if defined(QT_Q3PROCESS_DEBUG) |
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459 qDebug( "Q3ProcessManager::sigchldHnd() (PID: %d): process exited (Q3Process not available)", proc->pid ); |
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460 #endif |
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461 removeProc = true; |
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462 } |
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463 } |
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464 if ( removeProc ) { |
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465 QProc *oldproc = proc; |
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466 proc = procList->next(); |
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467 remove( oldproc ); |
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468 } else { |
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469 proc = procList->next(); |
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470 } |
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471 } |
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472 if ( sn ) |
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473 sn->setEnabled( true ); |
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474 } |
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475 |
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476 QT_BEGIN_INCLUDE_NAMESPACE |
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477 #include "q3process_unix.moc" |
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478 QT_END_INCLUDE_NAMESPACE |
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479 |
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480 |
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481 /*********************************************************************** |
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482 * |
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483 * Q3ProcessPrivate |
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484 * |
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485 **********************************************************************/ |
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486 Q3ProcessManager *Q3ProcessPrivate::procManager = 0; |
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487 |
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488 Q3ProcessPrivate::Q3ProcessPrivate() |
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489 { |
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490 #if defined(QT_Q3PROCESS_DEBUG) |
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491 qDebug( "Q3ProcessPrivate: Constructor" ); |
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492 #endif |
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493 stdinBufRead = 0; |
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494 |
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495 notifierStdin = 0; |
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496 notifierStdout = 0; |
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497 notifierStderr = 0; |
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498 |
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499 exitValuesCalculated = false; |
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500 socketReadCalled = false; |
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501 |
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502 proc = 0; |
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503 } |
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504 |
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505 Q3ProcessPrivate::~Q3ProcessPrivate() |
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506 { |
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507 #if defined(QT_Q3PROCESS_DEBUG) |
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508 qDebug( "Q3ProcessPrivate: Destructor" ); |
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509 #endif |
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510 |
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511 if ( proc != 0 ) { |
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512 if ( proc->socketStdin != 0 ) { |
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513 qt_safe_close( proc->socketStdin ); |
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514 proc->socketStdin = 0; |
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515 } |
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516 proc->process = 0; |
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517 } |
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518 |
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519 while ( !stdinBuf.isEmpty() ) { |
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520 delete stdinBuf.dequeue(); |
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521 } |
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522 delete notifierStdin; |
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523 delete notifierStdout; |
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524 delete notifierStderr; |
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525 } |
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526 |
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527 /* |
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528 Closes all open sockets in the child process that are not needed by the child |
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529 process. Otherwise one child may have an open socket on standard input, etc. |
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530 of another child. |
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531 */ |
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532 void Q3ProcessPrivate::closeOpenSocketsForChild() |
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533 { |
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534 if ( procManager != 0 ) { |
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535 if ( procManager->sigchldFd[0] != 0 ) |
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536 qt_safe_close( procManager->sigchldFd[0] ); |
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537 if ( procManager->sigchldFd[1] != 0 ) |
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538 qt_safe_close( procManager->sigchldFd[1] ); |
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539 |
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540 // close also the sockets from other Q3Process instances |
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541 for ( QProc *p=procManager->procList->first(); p!=0; p=procManager->procList->next() ) { |
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542 qt_safe_close( p->socketStdin ); |
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543 qt_safe_close( p->socketStdout ); |
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544 qt_safe_close( p->socketStderr ); |
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545 } |
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546 } |
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547 } |
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548 |
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549 void Q3ProcessPrivate::newProc( pid_t pid, Q3Process *process ) |
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550 { |
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551 proc = new QProc( pid, process ); |
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552 if ( procManager == 0 ) { |
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553 procManager = new Q3ProcessManager; |
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554 qAddPostRoutine(q3process_cleanup); |
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555 } |
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556 // the Q3ProcessManager takes care of deleting the QProc instances |
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557 procManager->append( proc ); |
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558 } |
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559 |
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560 /*********************************************************************** |
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561 * |
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562 * sigchld handler callback |
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563 * |
|
564 **********************************************************************/ |
|
565 static QT_SIGNAL_RETTYPE qt_C_sigchldHnd(QT_SIGNAL_ARGS) |
|
566 { |
|
567 if ( Q3ProcessPrivate::procManager == 0 ) |
|
568 return; |
|
569 if ( Q3ProcessPrivate::procManager->sigchldFd[0] == 0 ) |
|
570 return; |
|
571 |
|
572 char a = 1; |
|
573 qt_safe_write( Q3ProcessPrivate::procManager->sigchldFd[0], &a, sizeof(a) ); |
|
574 } |
|
575 |
|
576 |
|
577 /*********************************************************************** |
|
578 * |
|
579 * Q3Process |
|
580 * |
|
581 **********************************************************************/ |
|
582 /* |
|
583 This private class does basic initialization. |
|
584 */ |
|
585 void Q3Process::init() |
|
586 { |
|
587 d = new Q3ProcessPrivate(); |
|
588 exitStat = 0; |
|
589 exitNormal = false; |
|
590 } |
|
591 |
|
592 /* |
|
593 This private class resets the process variables, etc. so that it can be used |
|
594 for another process to start. |
|
595 */ |
|
596 void Q3Process::reset() |
|
597 { |
|
598 delete d; |
|
599 d = new Q3ProcessPrivate(); |
|
600 exitStat = 0; |
|
601 exitNormal = false; |
|
602 d->bufStdout.clear(); |
|
603 d->bufStderr.clear(); |
|
604 } |
|
605 |
|
606 Q3Membuf* Q3Process::membufStdout() |
|
607 { |
|
608 if ( d->proc && d->proc->socketStdout ) { |
|
609 /* |
|
610 Apparently, there is not consistency among different |
|
611 operating systems on how to use FIONREAD. |
|
612 |
|
613 FreeBSD, Linux and Solaris all expect the 3rd argument to |
|
614 ioctl() to be an int, which is normally 32-bit even on |
|
615 64-bit machines. |
|
616 |
|
617 IRIX, on the other hand, expects a size_t, which is 64-bit |
|
618 on 64-bit machines. |
|
619 |
|
620 So, the solution is to use size_t initialized to zero to |
|
621 make sure all bits are set to zero, preventing underflow |
|
622 with the FreeBSD/Linux/Solaris ioctls. |
|
623 */ |
|
624 size_t nbytes = 0; |
|
625 if ( ::ioctl(d->proc->socketStdout, FIONREAD, (char*)&nbytes)==0 && nbytes>0 ) |
|
626 socketRead( d->proc->socketStdout ); |
|
627 } |
|
628 return &d->bufStdout; |
|
629 } |
|
630 |
|
631 Q3Membuf* Q3Process::membufStderr() |
|
632 { |
|
633 if ( d->proc && d->proc->socketStderr ) { |
|
634 /* |
|
635 Apparently, there is not consistency among different |
|
636 operating systems on how to use FIONREAD. |
|
637 |
|
638 FreeBSD, Linux and Solaris all expect the 3rd argument to |
|
639 ioctl() to be an int, which is normally 32-bit even on |
|
640 64-bit machines. |
|
641 |
|
642 IRIX, on the other hand, expects a size_t, which is 64-bit |
|
643 on 64-bit machines. |
|
644 |
|
645 So, the solution is to use size_t initialized to zero to |
|
646 make sure all bits are set to zero, preventing underflow |
|
647 with the FreeBSD/Linux/Solaris ioctls. |
|
648 */ |
|
649 size_t nbytes = 0; |
|
650 if ( ::ioctl(d->proc->socketStderr, FIONREAD, (char*)&nbytes)==0 && nbytes>0 ) |
|
651 socketRead( d->proc->socketStderr ); |
|
652 } |
|
653 return &d->bufStderr; |
|
654 } |
|
655 |
|
656 Q3Process::~Q3Process() |
|
657 { |
|
658 delete d; |
|
659 } |
|
660 |
|
661 bool Q3Process::start( QStringList *env ) |
|
662 { |
|
663 #if defined(QT_Q3PROCESS_DEBUG) |
|
664 qDebug( "Q3Process::start()" ); |
|
665 #endif |
|
666 reset(); |
|
667 |
|
668 int sStdin[2]; |
|
669 int sStdout[2]; |
|
670 int sStderr[2]; |
|
671 |
|
672 // open sockets for piping |
|
673 #ifndef Q_OS_QNX6 |
|
674 if ( (comms & Stdin) && ::socketpair( AF_UNIX, SOCK_STREAM, 0, sStdin ) == -1 ) { |
|
675 #else |
|
676 if ( (comms & Stdin) && qnx6SocketPairReplacement(sStdin) == -1 ) { |
|
677 #endif |
|
678 return false; |
|
679 } |
|
680 #ifndef Q_OS_QNX6 |
|
681 if ( (comms & Stderr) && ::socketpair( AF_UNIX, SOCK_STREAM, 0, sStderr ) == -1 ) { |
|
682 #else |
|
683 if ( (comms & Stderr) && qnx6SocketPairReplacement(sStderr) == -1 ) { |
|
684 #endif |
|
685 if ( comms & Stdin ) { |
|
686 qt_safe_close( sStdin[0] ); |
|
687 qt_safe_close( sStdin[1] ); |
|
688 } |
|
689 return false; |
|
690 } |
|
691 #ifndef Q_OS_QNX6 |
|
692 if ( (comms & Stdout) && ::socketpair( AF_UNIX, SOCK_STREAM, 0, sStdout ) == -1 ) { |
|
693 #else |
|
694 if ( (comms & Stdout) && qnx6SocketPairReplacement(sStdout) == -1 ) { |
|
695 #endif |
|
696 if ( comms & Stdin ) { |
|
697 qt_safe_close( sStdin[0] ); |
|
698 qt_safe_close( sStdin[1] ); |
|
699 } |
|
700 if ( comms & Stderr ) { |
|
701 qt_safe_close( sStderr[0] ); |
|
702 qt_safe_close( sStderr[1] ); |
|
703 } |
|
704 return false; |
|
705 } |
|
706 |
|
707 // the following pipe is only used to determine if the process could be |
|
708 // started |
|
709 int fd[2]; |
|
710 if ( pipe( fd ) < 0 ) { |
|
711 // non critical error, go on |
|
712 fd[0] = 0; |
|
713 fd[1] = 0; |
|
714 } |
|
715 |
|
716 // construct the arguments for exec |
|
717 Q3CString *arglistQ = new Q3CString[ _arguments.count() + 1 ]; |
|
718 const char** arglist = new const char*[ _arguments.count() + 1 ]; |
|
719 int i = 0; |
|
720 for ( QStringList::Iterator it = _arguments.begin(); it != _arguments.end(); ++it ) { |
|
721 arglistQ[i] = (*it).local8Bit(); |
|
722 arglist[i] = arglistQ[i]; |
|
723 #if defined(QT_Q3PROCESS_DEBUG) |
|
724 qDebug( "Q3Process::start(): arg %d = %s", i, arglist[i] ); |
|
725 #endif |
|
726 i++; |
|
727 } |
|
728 #ifdef Q_OS_MACX |
|
729 if(i) { |
|
730 Q3CString arg_bundle = arglistQ[0]; |
|
731 QFileInfo fi(QString::fromUtf8(arg_bundle.constData())); |
|
732 if(fi.exists() && fi.isDir() && arg_bundle.right(4) == ".app") { |
|
733 Q3CString exe = arg_bundle; |
|
734 int lslash = exe.findRev('/'); |
|
735 if(lslash != -1) |
|
736 exe = exe.mid(lslash+1); |
|
737 exe = Q3CString(arg_bundle + "/Contents/MacOS/" + exe); |
|
738 exe = exe.left(exe.length() - 4); //chop off the .app |
|
739 if(QFile::exists(QString::fromLatin1(exe.constData()))) { |
|
740 arglistQ[0] = exe; |
|
741 arglist[0] = arglistQ[0]; |
|
742 } |
|
743 } |
|
744 } |
|
745 #endif |
|
746 arglist[i] = 0; |
|
747 |
|
748 // Must make sure signal handlers are installed before exec'ing |
|
749 // in case the process exits quickly. |
|
750 if ( d->procManager == 0 ) { |
|
751 d->procManager = new Q3ProcessManager; |
|
752 qAddPostRoutine(q3process_cleanup); |
|
753 } |
|
754 |
|
755 // fork and exec |
|
756 QApplication::flushX(); |
|
757 pid_t pid = fork(); |
|
758 if ( pid == 0 ) { |
|
759 // child |
|
760 d->closeOpenSocketsForChild(); |
|
761 if ( comms & Stdin ) { |
|
762 qt_safe_close( sStdin[1] ); |
|
763 ::dup2( sStdin[0], STDIN_FILENO ); |
|
764 } |
|
765 if ( comms & Stdout ) { |
|
766 qt_safe_close( sStdout[0] ); |
|
767 ::dup2( sStdout[1], STDOUT_FILENO ); |
|
768 } |
|
769 if ( comms & Stderr ) { |
|
770 qt_safe_close( sStderr[0] ); |
|
771 ::dup2( sStderr[1], STDERR_FILENO ); |
|
772 } |
|
773 if ( comms & DupStderr ) { |
|
774 ::dup2( STDOUT_FILENO, STDERR_FILENO ); |
|
775 } |
|
776 #ifndef QT_NO_DIR |
|
777 ::chdir( workingDir.absPath().latin1() ); |
|
778 #endif |
|
779 if ( fd[0] ) |
|
780 qt_safe_close( fd[0] ); |
|
781 if ( fd[1] ) |
|
782 ::fcntl( fd[1], F_SETFD, FD_CLOEXEC ); // close on exec shows success |
|
783 |
|
784 if ( env == 0 ) { // inherit environment and start process |
|
785 #ifndef Q_OS_QNX4 |
|
786 ::execvp( arglist[0], (char*const*)arglist ); // ### cast not nice |
|
787 #else |
|
788 ::execvp( arglist[0], (char const*const*)arglist ); // ### cast not nice |
|
789 #endif |
|
790 } else { // start process with environment settins as specified in env |
|
791 // construct the environment for exec |
|
792 int numEntries = env->count(); |
|
793 #if defined(Q_OS_MACX) |
|
794 QString ld_library_path(QLatin1String("DYLD_LIBRARY_PATH")); |
|
795 #else |
|
796 QString ld_library_path(QLatin1String("LD_LIBRARY_PATH")); |
|
797 #endif |
|
798 bool setLibraryPath = |
|
799 env->grep( QRegExp( QLatin1Char('^') + ld_library_path + QLatin1Char('=') ) ).empty() && |
|
800 getenv( ld_library_path.local8Bit() ) != 0; |
|
801 if ( setLibraryPath ) |
|
802 numEntries++; |
|
803 Q3CString *envlistQ = new Q3CString[ numEntries + 1 ]; |
|
804 const char** envlist = new const char*[ numEntries + 1 ]; |
|
805 int i = 0; |
|
806 if ( setLibraryPath ) { |
|
807 envlistQ[i] = QString( ld_library_path + QLatin1String("=%1") ).arg( QString::fromLocal8Bit(getenv( ld_library_path.local8Bit() )) ).local8Bit(); |
|
808 envlist[i] = envlistQ[i]; |
|
809 i++; |
|
810 } |
|
811 for ( QStringList::Iterator it = env->begin(); it != env->end(); ++it ) { |
|
812 envlistQ[i] = (*it).local8Bit(); |
|
813 envlist[i] = envlistQ[i]; |
|
814 i++; |
|
815 } |
|
816 envlist[i] = 0; |
|
817 |
|
818 // look for the executable in the search path |
|
819 if ( _arguments.count()>0 && getenv("PATH")!=0 ) { |
|
820 QString command = _arguments[0]; |
|
821 if ( !command.contains( QLatin1Char('/') ) ) { |
|
822 QStringList pathList = QStringList::split( QLatin1Char(':'), QString::fromLocal8Bit(getenv( "PATH" )) ); |
|
823 for (QStringList::Iterator it = pathList.begin(); it != pathList.end(); ++it ) { |
|
824 QString dir = *it; |
|
825 #if defined(Q_OS_MACX) //look in a bundle |
|
826 if(!QFile::exists(dir + QLatin1Char('/') + command) && QFile::exists(dir + QLatin1Char('/') + command + QLatin1String(".app"))) |
|
827 dir += QLatin1Char('/') + command + QLatin1String(".app/Contents/MacOS"); |
|
828 #endif |
|
829 #ifndef QT_NO_DIR |
|
830 QFileInfo fileInfo( dir, command ); |
|
831 #else |
|
832 QFileInfo fileInfo( dir + QLatin1Char('/') + command ); |
|
833 #endif |
|
834 if ( fileInfo.isExecutable() ) { |
|
835 #if defined(Q_OS_MACX) |
|
836 arglistQ[0] = fileInfo.absFilePath().local8Bit(); |
|
837 #else |
|
838 arglistQ[0] = fileInfo.filePath().local8Bit(); |
|
839 #endif |
|
840 arglist[0] = arglistQ[0]; |
|
841 break; |
|
842 } |
|
843 } |
|
844 } |
|
845 } |
|
846 #ifndef Q_OS_QNX4 |
|
847 ::execve( arglist[0], (char*const*)arglist, (char*const*)envlist ); // ### casts not nice |
|
848 #else |
|
849 ::execve( arglist[0], (char const*const*)arglist,(char const*const*)envlist ); // ### casts not nice |
|
850 #endif |
|
851 } |
|
852 if ( fd[1] ) { |
|
853 char buf = 0; |
|
854 qt_safe_write( fd[1], &buf, 1 ); |
|
855 qt_safe_close( fd[1] ); |
|
856 } |
|
857 ::_exit( -1 ); |
|
858 } else if ( pid == -1 ) { |
|
859 // error forking |
|
860 goto error; |
|
861 } |
|
862 |
|
863 // test if exec was successful |
|
864 if ( fd[1] ) |
|
865 qt_safe_close( fd[1] ); |
|
866 if ( fd[0] ) { |
|
867 char buf; |
|
868 for ( ;; ) { |
|
869 int n = ::read( fd[0], &buf, 1 ); |
|
870 if ( n==1 ) { |
|
871 // socket was not closed => error |
|
872 if ( ::waitpid( pid, 0, WNOHANG ) != pid ) { |
|
873 // The wait did not succeed yet, so try again when we get |
|
874 // the sigchild (to avoid zombies). |
|
875 d->newProc( pid, 0 ); |
|
876 } |
|
877 d->proc = 0; |
|
878 goto error; |
|
879 } else if ( n==-1 ) { |
|
880 if ( errno==EAGAIN || errno==EINTR ) |
|
881 // try it again |
|
882 continue; |
|
883 } |
|
884 break; |
|
885 } |
|
886 qt_safe_close( fd[0] ); |
|
887 } |
|
888 |
|
889 d->newProc( pid, this ); |
|
890 |
|
891 if ( comms & Stdin ) { |
|
892 qt_safe_close( sStdin[0] ); |
|
893 d->proc->socketStdin = sStdin[1]; |
|
894 |
|
895 // Select non-blocking mode |
|
896 int originalFlags = fcntl(d->proc->socketStdin, F_GETFL, 0); |
|
897 fcntl(d->proc->socketStdin, F_SETFL, originalFlags | O_NONBLOCK); |
|
898 |
|
899 d->notifierStdin = new QSocketNotifier( sStdin[1], QSocketNotifier::Write ); |
|
900 connect( d->notifierStdin, SIGNAL(activated(int)), |
|
901 this, SLOT(socketWrite(int)) ); |
|
902 // setup notifiers for the sockets |
|
903 if ( !d->stdinBuf.isEmpty() ) { |
|
904 d->notifierStdin->setEnabled( true ); |
|
905 } |
|
906 } |
|
907 if ( comms & Stdout ) { |
|
908 qt_safe_close( sStdout[1] ); |
|
909 d->proc->socketStdout = sStdout[0]; |
|
910 d->notifierStdout = new QSocketNotifier( sStdout[0], QSocketNotifier::Read ); |
|
911 connect( d->notifierStdout, SIGNAL(activated(int)), |
|
912 this, SLOT(socketRead(int)) ); |
|
913 if ( ioRedirection ) |
|
914 d->notifierStdout->setEnabled( true ); |
|
915 } |
|
916 if ( comms & Stderr ) { |
|
917 qt_safe_close( sStderr[1] ); |
|
918 d->proc->socketStderr = sStderr[0]; |
|
919 d->notifierStderr = new QSocketNotifier( sStderr[0], QSocketNotifier::Read ); |
|
920 connect( d->notifierStderr, SIGNAL(activated(int)), |
|
921 this, SLOT(socketRead(int)) ); |
|
922 if ( ioRedirection ) |
|
923 d->notifierStderr->setEnabled( true ); |
|
924 } |
|
925 |
|
926 // cleanup and return |
|
927 delete[] arglistQ; |
|
928 delete[] arglist; |
|
929 return true; |
|
930 |
|
931 error: |
|
932 #if defined(QT_Q3PROCESS_DEBUG) |
|
933 qDebug( "Q3Process::start(): error starting process" ); |
|
934 #endif |
|
935 if ( d->procManager ) |
|
936 d->procManager->cleanup(); |
|
937 if ( comms & Stdin ) { |
|
938 qt_safe_close( sStdin[1] ); |
|
939 qt_safe_close( sStdin[0] ); |
|
940 } |
|
941 if ( comms & Stdout ) { |
|
942 qt_safe_close( sStdout[0] ); |
|
943 qt_safe_close( sStdout[1] ); |
|
944 } |
|
945 if ( comms & Stderr ) { |
|
946 qt_safe_close( sStderr[0] ); |
|
947 qt_safe_close( sStderr[1] ); |
|
948 } |
|
949 qt_safe_close( fd[0] ); |
|
950 qt_safe_close( fd[1] ); |
|
951 delete[] arglistQ; |
|
952 delete[] arglist; |
|
953 return false; |
|
954 } |
|
955 |
|
956 |
|
957 void Q3Process::tryTerminate() const |
|
958 { |
|
959 if ( d->proc != 0 ) |
|
960 ::kill( d->proc->pid, SIGTERM ); |
|
961 } |
|
962 |
|
963 void Q3Process::kill() const |
|
964 { |
|
965 if ( d->proc != 0 ) |
|
966 ::kill( d->proc->pid, SIGKILL ); |
|
967 } |
|
968 |
|
969 bool Q3Process::isRunning() const |
|
970 { |
|
971 if ( d->exitValuesCalculated ) { |
|
972 #if defined(QT_Q3PROCESS_DEBUG) |
|
973 qDebug( "Q3Process::isRunning(): false (already computed)" ); |
|
974 #endif |
|
975 return false; |
|
976 } |
|
977 if ( d->proc == 0 ) |
|
978 return false; |
|
979 int status; |
|
980 if ( ::waitpid( d->proc->pid, &status, WNOHANG ) == d->proc->pid ) { |
|
981 // compute the exit values |
|
982 Q3Process *that = (Q3Process*)this; // mutable |
|
983 that->exitNormal = WIFEXITED( status ) != 0; |
|
984 if ( exitNormal ) { |
|
985 that->exitStat = (char)WEXITSTATUS( status ); |
|
986 } |
|
987 d->exitValuesCalculated = true; |
|
988 |
|
989 // On heavy processing, the socket notifier for the sigchild might not |
|
990 // have found time to fire yet. |
|
991 if ( d->procManager && d->procManager->sigchldFd[1] < FD_SETSIZE ) { |
|
992 fd_set fds; |
|
993 struct timeval tv; |
|
994 FD_ZERO( &fds ); |
|
995 FD_SET( d->procManager->sigchldFd[1], &fds ); |
|
996 tv.tv_sec = 0; |
|
997 tv.tv_usec = 0; |
|
998 if ( ::select( d->procManager->sigchldFd[1]+1, &fds, 0, 0, &tv ) > 0 ) |
|
999 d->procManager->sigchldHnd( d->procManager->sigchldFd[1] ); |
|
1000 } |
|
1001 |
|
1002 #if defined(QT_Q3PROCESS_DEBUG) |
|
1003 qDebug( "Q3Process::isRunning() (PID: %d): false", d->proc->pid ); |
|
1004 #endif |
|
1005 return false; |
|
1006 } |
|
1007 #if defined(QT_Q3PROCESS_DEBUG) |
|
1008 qDebug( "Q3Process::isRunning() (PID: %d): true", d->proc->pid ); |
|
1009 #endif |
|
1010 return true; |
|
1011 } |
|
1012 |
|
1013 bool Q3Process::canReadLineStdout() const |
|
1014 { |
|
1015 if ( !d->proc || !d->proc->socketStdout ) |
|
1016 return d->bufStdout.size() != 0; |
|
1017 |
|
1018 Q3Process *that = (Q3Process*)this; |
|
1019 return that->membufStdout()->scanNewline( 0 ); |
|
1020 } |
|
1021 |
|
1022 bool Q3Process::canReadLineStderr() const |
|
1023 { |
|
1024 if ( !d->proc || !d->proc->socketStderr ) |
|
1025 return d->bufStderr.size() != 0; |
|
1026 |
|
1027 Q3Process *that = (Q3Process*)this; |
|
1028 return that->membufStderr()->scanNewline( 0 ); |
|
1029 } |
|
1030 |
|
1031 void Q3Process::writeToStdin( const QByteArray& buf ) |
|
1032 { |
|
1033 #if defined(QT_Q3PROCESS_DEBUG) |
|
1034 // qDebug( "Q3Process::writeToStdin(): write to stdin (%d)", d->socketStdin ); |
|
1035 #endif |
|
1036 d->stdinBuf.enqueue( new QByteArray(buf) ); |
|
1037 if ( d->notifierStdin != 0 ) |
|
1038 d->notifierStdin->setEnabled( true ); |
|
1039 } |
|
1040 |
|
1041 |
|
1042 void Q3Process::closeStdin() |
|
1043 { |
|
1044 if ( d->proc == 0 ) |
|
1045 return; |
|
1046 if ( d->proc->socketStdin !=0 ) { |
|
1047 while ( !d->stdinBuf.isEmpty() ) { |
|
1048 delete d->stdinBuf.dequeue(); |
|
1049 } |
|
1050 d->notifierStdin->setEnabled(false); |
|
1051 qDeleteInEventHandler(d->notifierStdin); |
|
1052 d->notifierStdin = 0; |
|
1053 if ( qt_safe_close( d->proc->socketStdin ) != 0 ) { |
|
1054 qWarning( "Could not close stdin of child process" ); |
|
1055 } |
|
1056 #if defined(QT_Q3PROCESS_DEBUG) |
|
1057 qDebug( "Q3Process::closeStdin(): stdin (%d) closed", d->proc->socketStdin ); |
|
1058 #endif |
|
1059 d->proc->socketStdin = 0; |
|
1060 } |
|
1061 } |
|
1062 |
|
1063 |
|
1064 /* |
|
1065 This private slot is called when the process has outputted data to either |
|
1066 standard output or standard error. |
|
1067 */ |
|
1068 void Q3Process::socketRead( int fd ) |
|
1069 { |
|
1070 if ( d->socketReadCalled ) { |
|
1071 // the slots that are connected to the readyRead...() signals might |
|
1072 // trigger a recursive call of socketRead(). Avoid this since you get a |
|
1073 // blocking read otherwise. |
|
1074 return; |
|
1075 } |
|
1076 |
|
1077 #if defined(QT_Q3PROCESS_DEBUG) |
|
1078 qDebug( "Q3Process::socketRead(): %d", fd ); |
|
1079 #endif |
|
1080 if ( fd == 0 ) |
|
1081 return; |
|
1082 if ( !d->proc ) |
|
1083 return; |
|
1084 Q3Membuf *buffer = 0; |
|
1085 int n; |
|
1086 if ( fd == d->proc->socketStdout ) { |
|
1087 buffer = &d->bufStdout; |
|
1088 } else if ( fd == d->proc->socketStderr ) { |
|
1089 buffer = &d->bufStderr; |
|
1090 } else { |
|
1091 // this case should never happen, but just to be safe |
|
1092 return; |
|
1093 } |
|
1094 #if defined(QT_Q3PROCESS_DEBUG) |
|
1095 uint oldSize = buffer->size(); |
|
1096 #endif |
|
1097 |
|
1098 // try to read data first (if it fails, the filedescriptor was closed) |
|
1099 const int basize = 4096; |
|
1100 QByteArray *ba = new QByteArray( basize ); |
|
1101 n = ::read( fd, ba->data(), basize ); |
|
1102 if ( n > 0 ) { |
|
1103 ba->resize( n ); |
|
1104 buffer->append( ba ); |
|
1105 ba = 0; |
|
1106 } else { |
|
1107 delete ba; |
|
1108 ba = 0; |
|
1109 } |
|
1110 // eof or error? |
|
1111 if ( n == 0 || n == -1 ) { |
|
1112 if ( fd == d->proc->socketStdout ) { |
|
1113 #if defined(QT_Q3PROCESS_DEBUG) |
|
1114 qDebug( "Q3Process::socketRead(): stdout (%d) closed", fd ); |
|
1115 #endif |
|
1116 d->notifierStdout->setEnabled( false ); |
|
1117 qDeleteInEventHandler(d->notifierStdout); |
|
1118 d->notifierStdout = 0; |
|
1119 qt_safe_close( d->proc->socketStdout ); |
|
1120 d->proc->socketStdout = 0; |
|
1121 return; |
|
1122 } else if ( fd == d->proc->socketStderr ) { |
|
1123 #if defined(QT_Q3PROCESS_DEBUG) |
|
1124 qDebug( "Q3Process::socketRead(): stderr (%d) closed", fd ); |
|
1125 #endif |
|
1126 d->notifierStderr->setEnabled( false ); |
|
1127 qDeleteInEventHandler(d->notifierStderr); |
|
1128 d->notifierStderr = 0; |
|
1129 qt_safe_close( d->proc->socketStderr ); |
|
1130 d->proc->socketStderr = 0; |
|
1131 return; |
|
1132 } |
|
1133 } |
|
1134 |
|
1135 if ( fd < FD_SETSIZE ) { |
|
1136 fd_set fds; |
|
1137 struct timeval tv; |
|
1138 FD_ZERO( &fds ); |
|
1139 FD_SET( fd, &fds ); |
|
1140 tv.tv_sec = 0; |
|
1141 tv.tv_usec = 0; |
|
1142 while ( ::select( fd+1, &fds, 0, 0, &tv ) > 0 ) { |
|
1143 // prepare for the next round |
|
1144 FD_ZERO( &fds ); |
|
1145 FD_SET( fd, &fds ); |
|
1146 // read data |
|
1147 ba = new QByteArray( basize ); |
|
1148 n = ::read( fd, ba->data(), basize ); |
|
1149 if ( n > 0 ) { |
|
1150 ba->resize( n ); |
|
1151 buffer->append( ba ); |
|
1152 ba = 0; |
|
1153 } else { |
|
1154 delete ba; |
|
1155 ba = 0; |
|
1156 break; |
|
1157 } |
|
1158 } |
|
1159 } |
|
1160 |
|
1161 d->socketReadCalled = true; |
|
1162 if ( fd == d->proc->socketStdout ) { |
|
1163 #if defined(QT_Q3PROCESS_DEBUG) |
|
1164 qDebug( "Q3Process::socketRead(): %d bytes read from stdout (%d)", |
|
1165 buffer->size()-oldSize, fd ); |
|
1166 #endif |
|
1167 emit readyReadStdout(); |
|
1168 } else if ( fd == d->proc->socketStderr ) { |
|
1169 #if defined(QT_Q3PROCESS_DEBUG) |
|
1170 qDebug( "Q3Process::socketRead(): %d bytes read from stderr (%d)", |
|
1171 buffer->size()-oldSize, fd ); |
|
1172 #endif |
|
1173 emit readyReadStderr(); |
|
1174 } |
|
1175 d->socketReadCalled = false; |
|
1176 } |
|
1177 |
|
1178 |
|
1179 /* |
|
1180 This private slot is called when the process tries to read data from standard |
|
1181 input. |
|
1182 */ |
|
1183 void Q3Process::socketWrite( int fd ) |
|
1184 { |
|
1185 while ( fd == d->proc->socketStdin && d->proc->socketStdin != 0 ) { |
|
1186 if ( d->stdinBuf.isEmpty() ) { |
|
1187 d->notifierStdin->setEnabled( false ); |
|
1188 return; |
|
1189 } |
|
1190 ssize_t ret = ::write( fd, |
|
1191 d->stdinBuf.head()->data() + d->stdinBufRead, |
|
1192 d->stdinBuf.head()->size() - d->stdinBufRead ); |
|
1193 #if defined(QT_Q3PROCESS_DEBUG) |
|
1194 qDebug( "Q3Process::socketWrite(): wrote %d bytes to stdin (%d)", ret, fd ); |
|
1195 #endif |
|
1196 if ( ret == -1 ) |
|
1197 return; |
|
1198 d->stdinBufRead += ret; |
|
1199 if ( d->stdinBufRead == (ssize_t)d->stdinBuf.head()->size() ) { |
|
1200 d->stdinBufRead = 0; |
|
1201 delete d->stdinBuf.dequeue(); |
|
1202 if ( wroteToStdinConnected && d->stdinBuf.isEmpty() ) |
|
1203 emit wroteToStdin(); |
|
1204 } |
|
1205 } |
|
1206 } |
|
1207 |
|
1208 /*! |
|
1209 \internal |
|
1210 Flushes standard input. This is useful if you want to use Q3Process in a |
|
1211 synchronous manner. |
|
1212 |
|
1213 This function should probably go into the public API. |
|
1214 */ |
|
1215 void Q3Process::flushStdin() |
|
1216 { |
|
1217 if (d->proc) |
|
1218 socketWrite(d->proc->socketStdin); |
|
1219 } |
|
1220 |
|
1221 /* |
|
1222 This private slot is only used under Windows (but moc does not know about #if |
|
1223 defined()). |
|
1224 */ |
|
1225 void Q3Process::timeout() |
|
1226 { |
|
1227 } |
|
1228 |
|
1229 |
|
1230 /* |
|
1231 This private function is used by connectNotify() and disconnectNotify() to |
|
1232 change the value of ioRedirection (and related behaviour) |
|
1233 */ |
|
1234 void Q3Process::setIoRedirection( bool value ) |
|
1235 { |
|
1236 ioRedirection = value; |
|
1237 if ( ioRedirection ) { |
|
1238 if ( d->notifierStdout ) |
|
1239 d->notifierStdout->setEnabled( true ); |
|
1240 if ( d->notifierStderr ) |
|
1241 d->notifierStderr->setEnabled( true ); |
|
1242 } else { |
|
1243 if ( d->notifierStdout ) |
|
1244 d->notifierStdout->setEnabled( false ); |
|
1245 if ( d->notifierStderr ) |
|
1246 d->notifierStderr->setEnabled( false ); |
|
1247 } |
|
1248 } |
|
1249 |
|
1250 /* |
|
1251 This private function is used by connectNotify() and |
|
1252 disconnectNotify() to change the value of notifyOnExit (and related |
|
1253 behaviour) |
|
1254 */ |
|
1255 void Q3Process::setNotifyOnExit( bool value ) |
|
1256 { |
|
1257 notifyOnExit = value; |
|
1258 } |
|
1259 |
|
1260 /* |
|
1261 This private function is used by connectNotify() and disconnectNotify() to |
|
1262 change the value of wroteToStdinConnected (and related behaviour) |
|
1263 */ |
|
1264 void Q3Process::setWroteStdinConnected( bool value ) |
|
1265 { |
|
1266 wroteToStdinConnected = value; |
|
1267 } |
|
1268 |
|
1269 /*! |
|
1270 \typedef Q3Process::PID |
|
1271 \internal |
|
1272 */ |
|
1273 |
|
1274 Q3Process::PID Q3Process::processIdentifier() |
|
1275 { |
|
1276 if ( d->proc == 0 ) |
|
1277 return -1; |
|
1278 return d->proc->pid; |
|
1279 } |
|
1280 |
|
1281 QT_END_NAMESPACE |
|
1282 |
|
1283 #endif // QT_NO_PROCESS |