<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <title>lock.cpp Source File</title> <style type="text/css"> .cp-doNotDisplay { display: none; } @media aural, braille, handheld, tty { .cp-doNotDisplay { display: inline; speak: normal; }} .cp-edit { text-align: right; } @media print, embossed { .cp-edit { display: none; }} </style> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <link rel="meta" href="http://www.kde.org/labels.rdf" type="application/rdf+xml" title="ICRA labels" /> <meta name="trademark" content="KDE e.V." /> <meta name="description" content="K Desktop Environment Homepage, KDE.org" /> <meta name="MSSmartTagsPreventParsing" content="true" /> <meta name="robots" content="all" /> <meta name="no-email-collection" content="http://www.unspam.com/noemailcollection" /> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link rel="shortcut icon" href="../../favicon.ico" /><link rel="icon" href="../../favicon.ico" /> <link rel="stylesheet" media="screen" type="text/css" title="KDE Colors" href="../../kde.css" /> <link rel="stylesheet" media="print, embossed" type="text/css" href="../../print.css" /> <link rel="stylesheet" media="screen, aural, handheld, tty, braille" type="text/css" title="Flat" href="../../flat.css" /> <link rel="stylesheet" type="text/css" href="../../doxygen.css" /> <link rel="stylesheet" type="text/css" href="../../tabs.css" /> </head> <body> <ul class="cp-doNotDisplay"> <li><a href="#cp-content" accesskey="2">Skip to content</a></li> <li><a href="#cp-menu" accesskey="5">Skip to link menu</a></li> </ul> <div id="container"> <div id="header"> <div id="header_top"><div><div> <img alt ="" src="../../top-kde.jpg"/> </div></div></div> <div id="header_bottom"> <div id="location"> <ul> <li><a href="http://api.kde.org">KDE API Reference</a></li> <li><a href="../../index.html">kdepimlibs-4.10.5 API Reference</a></li> </ul> </div> <div id="menu"> <ul> <li><a href="http://www.kde.org/">KDE Home</a></li> <li><a href="http://kde.org/contact/">Contact Us</a></li> </ul> </div> </div> </div> <!-- End page header --> <div id="body_wrapper"> <div id="body"> <!-- begin main content --> <div id="right"> <div class="content"> <div id="main"> <div class="clearer"> </div> <h2><a name="content"></a>kabc</h2> <!-- BC --> <div id="top"> <!-- Generated by Doxygen 1.8.3.1 --> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_8a932cd075db1bb2631d0824afd00337.html">kabc</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="headertitle"> <div class="title">lock.cpp</div> </div> </div><!--header--> <div class="contents"> <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div> <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> This file is part of libkabc.</span></div> <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> Copyright (c) 2001,2003 Cornelius Schumacher <schumacher@kde.org></span></div> <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"></span></div> <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> This library is free software; you can redistribute it and/or</span></div> <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> modify it under the terms of the GNU Library General Public</span></div> <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> License as published by the Free Software Foundation; either</span></div> <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> version 2 of the License, or (at your option) any later version.</span></div> <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span></div> <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> This library is distributed in the hope that it will be useful,</span></div> <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div> <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div> <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> Library General Public License for more details.</span></div> <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"></span></div> <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> You should have received a copy of the GNU Library General Public License</span></div> <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> along with this library; see the file COPYING.LIB. If not, write to</span></div> <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span></div> <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> Boston, MA 02110-1301, USA.</span></div> <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">*/</span></div> <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div> <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "lock.h"</span></div> <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div> <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <krandom.h></span></div> <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <kcomponentdata.h></span></div> <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <kdebug.h></span></div> <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <klocale.h></span></div> <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <kstandarddirs.h></span></div> <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div> <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <QtCore/QFile></span></div> <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <QtCore/QTextStream></span></div> <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div> <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <errno.h></span></div> <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <signal.h></span></div> <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <sys/types.h></span></div> <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <sys/stat.h></span></div> <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <unistd.h></span></div> <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div> <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">using namespace </span>KABC;</div> <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div> <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">class </span>Lock::Private</div> <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> {</div> <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">public</span>:</div> <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  Private( <span class="keyword">const</span> QString &identifier )</div> <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  : mIdentifier( identifier ),</div> <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  mOrigIdentifier( identifier )</div> <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  {</div> <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  mIdentifier.replace( QLatin1Char( <span class="charliteral">'/'</span> ), QLatin1Char( <span class="charliteral">'_'</span> ) );</div> <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#ifdef Q_WS_WIN</span></div> <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor"></span> mIdentifier.replace( QLatin1Char( <span class="charliteral">':'</span> ), QLatin1Char( <span class="charliteral">'_'</span> ) );</div> <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#endif</span></div> <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor"></span> }</div> <div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div> <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  QString mIdentifier;</div> <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  QString mOrigIdentifier;</div> <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  QString mLockUniqueName;</div> <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  QString mError;</div> <div class="line"><a name="l00057"></a><span class="lineno"> 57</span> };</div> <div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div> <div class="line"><a name="l00059"></a><span class="lineno"><a class="code" href="classKABC_1_1Lock.html#a2b0bb3f15b645e77c72a386c890df8e2"> 59</a></span> <a class="code" href="classKABC_1_1Lock.html#a2b0bb3f15b645e77c72a386c890df8e2" title="Constructor.">Lock::Lock</a>( <span class="keyword">const</span> QString &identifier )</div> <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  : d( new Private( identifier ) )</div> <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> {</div> <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> }</div> <div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div> <div class="line"><a name="l00064"></a><span class="lineno"><a class="code" href="classKABC_1_1Lock.html#a7ab6d9485c8665bb3643710432882971"> 64</a></span> <a class="code" href="classKABC_1_1Lock.html#a7ab6d9485c8665bb3643710432882971" title="Destruct lock object.">Lock::~Lock</a>()</div> <div class="line"><a name="l00065"></a><span class="lineno"> 65</span> {</div> <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <a class="code" href="classKABC_1_1Lock.html#af51df18839060f5a4862cc35065706f1" title="Unlock resource.">unlock</a>();</div> <div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div> <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">delete</span> d;</div> <div class="line"><a name="l00069"></a><span class="lineno"> 69</span> }</div> <div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div> <div class="line"><a name="l00071"></a><span class="lineno"><a class="code" href="classKABC_1_1Lock.html#ada795539d5f73cf1f220d97961456b07"> 71</a></span> QString <a class="code" href="classKABC_1_1Lock.html#ada795539d5f73cf1f220d97961456b07" title="Returns the path of the directory where locks are created.">Lock::locksDir</a>()</div> <div class="line"><a name="l00072"></a><span class="lineno"> 72</span> {</div> <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">return</span> KStandardDirs::locateLocal( <span class="stringliteral">"data"</span>, QLatin1String( <span class="stringliteral">"kabc/lock/"</span> ) );</div> <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> }</div> <div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div> <div class="line"><a name="l00076"></a><span class="lineno"><a class="code" href="classKABC_1_1Lock.html#a8723bbe2e6dc88c263eac3c4810b6147"> 76</a></span> <span class="keywordtype">bool</span> <a class="code" href="classKABC_1_1Lock.html#a8723bbe2e6dc88c263eac3c4810b6147" title="Reads the process ID and the application name from a lock file.">Lock::readLockFile</a>( <span class="keyword">const</span> QString &filename, <span class="keywordtype">int</span> &pid, QString &app )</div> <div class="line"><a name="l00077"></a><span class="lineno"> 77</span> {</div> <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  QFile file( filename );</div> <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> ( !file.open( QIODevice::ReadOnly ) ) {</div> <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  }</div> <div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div> <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  QTextStream t( &file );</div> <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  t >> pid >> ws >> app;</div> <div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div> <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> <div class="line"><a name="l00087"></a><span class="lineno"> 87</span> }</div> <div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div> <div class="line"><a name="l00089"></a><span class="lineno"><a class="code" href="classKABC_1_1Lock.html#a9ffc9bf5a49f59d63d39390ffbff47b1"> 89</a></span> <span class="keywordtype">bool</span> <a class="code" href="classKABC_1_1Lock.html#a9ffc9bf5a49f59d63d39390ffbff47b1" title="Writes the process ID and the application name to a lock file.">Lock::writeLockFile</a>( <span class="keyword">const</span> QString &filename )</div> <div class="line"><a name="l00090"></a><span class="lineno"> 90</span> {</div> <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  QFile file( filename );</div> <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">if</span> ( !file.open( QIODevice::WriteOnly ) ) {</div> <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div> <div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div> <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  QTextStream t( &file );</div> <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  t << ::getpid() << endl << QString( KGlobal::mainComponent().componentName() );</div> <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div> <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> <div class="line"><a name="l00100"></a><span class="lineno"> 100</span> }</div> <div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div> <div class="line"><a name="l00102"></a><span class="lineno"><a class="code" href="classKABC_1_1Lock.html#abdac65d1caba94c7ed047186a2635a3e"> 102</a></span> QString <a class="code" href="classKABC_1_1Lock.html#abdac65d1caba94c7ed047186a2635a3e" title="Returns the path of the lock file.">Lock::lockFileName</a>()<span class="keyword"> const</span></div> <div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="keyword"></span>{</div> <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> <a class="code" href="classKABC_1_1Lock.html#ada795539d5f73cf1f220d97961456b07" title="Returns the path of the directory where locks are created.">locksDir</a>() + d->mIdentifier + QLatin1String( <span class="stringliteral">".lock"</span> );</div> <div class="line"><a name="l00105"></a><span class="lineno"> 105</span> }</div> <div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div> <div class="line"><a name="l00107"></a><span class="lineno"><a class="code" href="classKABC_1_1Lock.html#af7f60cb0f7176ad0b7704e49993afaa2"> 107</a></span> <span class="keywordtype">bool</span> <a class="code" href="classKABC_1_1Lock.html#af7f60cb0f7176ad0b7704e49993afaa2" title="Lock resource.">Lock::lock</a>()</div> <div class="line"><a name="l00108"></a><span class="lineno"> 108</span> {</div> <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  QString lockName = <a class="code" href="classKABC_1_1Lock.html#abdac65d1caba94c7ed047186a2635a3e" title="Returns the path of the lock file.">lockFileName</a>();</div> <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  kDebug() << <span class="stringliteral">"-- lock name:"</span> << lockName;</div> <div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div> <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">if</span> ( QFile::exists( lockName ) ) { <span class="comment">// check if it is a stale lock file</span></div> <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">int</span> pid;</div> <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  QString app;</div> <div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div> <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">if</span> ( !<a class="code" href="classKABC_1_1Lock.html#a8723bbe2e6dc88c263eac3c4810b6147" title="Reads the process ID and the application name from a lock file.">readLockFile</a>( <a class="code" href="classKABC_1_1Lock.html#abdac65d1caba94c7ed047186a2635a3e" title="Returns the path of the lock file.">lockFileName</a>(), pid, app ) ) {</div> <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  d->mError = i18n( <span class="stringliteral">"Unable to open lock file."</span> );</div> <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div> <div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div> <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordtype">int</span> retval = ::kill( pid, 0 );</div> <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">if</span> ( retval == -1 && errno == ESRCH ) { <span class="comment">// process doesn't exists anymore</span></div> <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  QFile::remove( lockName );</div> <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  kWarning() << <span class="stringliteral">"Removed stale lock file from process '"</span> << app << <span class="stringliteral">"'"</span>;</div> <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  } <span class="keywordflow">else</span> {</div> <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  d->mError = i18n( <span class="stringliteral">"The resource '%1' is locked by application '%2'."</span>,</div> <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  d->mOrigIdentifier, app );</div> <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  }</div> <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  }</div> <div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div> <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  QString lockUniqueName;</div> <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  lockUniqueName = d->mIdentifier + KRandom::randomString( 8 );</div> <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  d->mLockUniqueName = KStandardDirs::locateLocal(</div> <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="stringliteral">"data"</span>, QLatin1String( <span class="stringliteral">"kabc/lock/"</span> ) + lockUniqueName );</div> <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  kDebug() << <span class="stringliteral">"-- lock unique name:"</span> << d->mLockUniqueName;</div> <div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div> <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">// Create unique file</span></div> <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <a class="code" href="classKABC_1_1Lock.html#a9ffc9bf5a49f59d63d39390ffbff47b1" title="Writes the process ID and the application name to a lock file.">writeLockFile</a>( d->mLockUniqueName );</div> <div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div> <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="comment">// Create lock file</span></div> <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordtype">int</span> result = ::link( QFile::encodeName( d->mLockUniqueName ),</div> <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  QFile::encodeName( lockName ) );</div> <div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div> <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">if</span> ( result == 0 ) {</div> <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  d->mError.clear();</div> <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  emit <a class="code" href="classKABC_1_1Lock.html#a5ccd6a7a2353dc4f62646652acf9f3d0" title="Emitted after the lock has been locked.">locked</a>();</div> <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  }</div> <div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div> <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="comment">// TODO: check stat</span></div> <div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div> <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  d->mError = i18n( <span class="stringliteral">"Error"</span> );</div> <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> <div class="line"><a name="l00155"></a><span class="lineno"> 155</span> }</div> <div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div> <div class="line"><a name="l00157"></a><span class="lineno"><a class="code" href="classKABC_1_1Lock.html#af51df18839060f5a4862cc35065706f1"> 157</a></span> <span class="keywordtype">bool</span> <a class="code" href="classKABC_1_1Lock.html#af51df18839060f5a4862cc35065706f1" title="Unlock resource.">Lock::unlock</a>()</div> <div class="line"><a name="l00158"></a><span class="lineno"> 158</span> {</div> <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordtype">int</span> pid;</div> <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  QString app;</div> <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">if</span> ( <a class="code" href="classKABC_1_1Lock.html#a8723bbe2e6dc88c263eac3c4810b6147" title="Reads the process ID and the application name from a lock file.">readLockFile</a>( <a class="code" href="classKABC_1_1Lock.html#abdac65d1caba94c7ed047186a2635a3e" title="Returns the path of the lock file.">lockFileName</a>(), pid, app ) ) {</div> <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">if</span> ( pid == getpid() ) {</div> <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  QFile::remove( <a class="code" href="classKABC_1_1Lock.html#abdac65d1caba94c7ed047186a2635a3e" title="Returns the path of the lock file.">lockFileName</a>() );</div> <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  QFile::remove( d->mLockUniqueName );</div> <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  emit <a class="code" href="classKABC_1_1Lock.html#a3c03dcf60fcf33dbeb3f59d1c4f3a676" title="Emitted after the lock has been unlocked.">unlocked</a>();</div> <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  } <span class="keywordflow">else</span> {</div> <div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  d->mError = i18n( <span class="stringliteral">"Unlock failed. Lock file is owned by other process: %1 (%2)"</span>, app, pid );</div> <div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  kDebug() << d->mError;</div> <div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> <div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div> <div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  }</div> <div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div> <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  d->mError.clear();</div> <div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div> <div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> <div class="line"><a name="l00176"></a><span class="lineno"> 176</span> }</div> <div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div> <div class="line"><a name="l00178"></a><span class="lineno"><a class="code" href="classKABC_1_1Lock.html#ac79c33fa67c3ec756aac89899bbb838b"> 178</a></span> QString <a class="code" href="classKABC_1_1Lock.html#ac79c33fa67c3ec756aac89899bbb838b" title="Returns the lastest error message.">Lock::error</a>()<span class="keyword"> const</span></div> <div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="keyword"></span>{</div> <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">return</span> d->mError;</div> <div class="line"><a name="l00181"></a><span class="lineno"> 181</span> }</div> <div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div> </div><!-- fragment --></div><!-- contents --> <div class="copyrights"> This file is part of the KDE documentation.<br/> Documentation copyright © 1996-2013 The KDE developers.<br/> 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