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<a href="PThreads_8hh.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//</span>
<a name="l00002"></a>00002 <span class="comment">// PThreads.hh</span>
<a name="l00003"></a>00003 <span class="comment">//</span>
<a name="l00004"></a>00004 <span class="comment">// Copyright (C) : 2000 - 2002</span>
<a name="l00005"></a>00005 <span class="comment">// LifeLine Networks BV (www.lifeline.nl). All rights reserved.</span>
<a name="l00006"></a>00006 <span class="comment">// Bastiaan Bakker. All rights reserved. </span>
<a name="l00007"></a>00007 <span class="comment">// </span>
<a name="l00008"></a>00008 <span class="comment">// 2004,2005,2006,2007,2008,2009,2010</span>
<a name="l00009"></a>00009 <span class="comment">// Synchrotron SOLEIL</span>
<a name="l00010"></a>00010 <span class="comment">// L'Orme des Merisiers</span>
<a name="l00011"></a>00011 <span class="comment">// Saint-Aubin - BP 48 - France</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// This file is part of log4tango.</span>
<a name="l00014"></a>00014 <span class="comment">//</span>
<a name="l00015"></a>00015 <span class="comment">// Log4ango is free software: you can redistribute it and/or modify</span>
<a name="l00016"></a>00016 <span class="comment">// it under the terms of the GNU Lesser General Public License as published by</span>
<a name="l00017"></a>00017 <span class="comment">// the Free Software Foundation, either version 3 of the License, or</span>
<a name="l00018"></a>00018 <span class="comment">// (at your option) any later version.</span>
<a name="l00019"></a>00019 <span class="comment">// </span>
<a name="l00020"></a>00020 <span class="comment">// Log4tango is distributed in the hope that it will be useful,</span>
<a name="l00021"></a>00021 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00022"></a>00022 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00023"></a>00023 <span class="comment">// GNU Lesser General Public License for more details.</span>
<a name="l00024"></a>00024 <span class="comment">// </span>
<a name="l00025"></a>00025 <span class="comment">// You should have received a copy of the GNU Lesser General Public License</span>
<a name="l00026"></a>00026 <span class="comment">// along with Log4Tango. If not, see <http://www.gnu.org/licenses/>.</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="preprocessor">#ifndef _LOG4TANGO_THREADING_PTHREADS_H</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#define _LOG4TANGO_THREADING_PTHREADS_H</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <<a class="code" href="Portability_8hh.html">log4tango/Portability.hh</a>></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <stdio.h></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <pthread.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <string></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <assert.h></span>
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="keyword">namespace </span>log4tango {
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="keyword">namespace </span>threading {
<a name="l00040"></a>00040
<a name="l00041"></a>00041 std::string <a class="code" href="namespacelog4tango_1_1threading.html#a91163823bc4a91e103ecad618f8b146a">get_thread_id</a> (<span class="keywordtype">void</span>);
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="keywordtype">long</span> <a class="code" href="namespacelog4tango_1_1threading.html#a078567483c4ee7490efecaa30047117f">thread_id</a> (<span class="keywordtype">void</span>);
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <span class="comment">//-----------------------------------------------------------------------------</span>
<a name="l00046"></a>00046 <span class="comment">// Class : Mutex</span>
<a name="l00047"></a>00047 <span class="comment">//-----------------------------------------------------------------------------</span>
<a name="l00048"></a>00048 <span class="keyword">class </span><a class="code" href="namespacelog4tango_1_1threading.html#a6ab044c515d422f490f47a2499bf1f0a">Mutex</a>
<a name="l00049"></a>00049 {
<a name="l00050"></a>00050 <span class="keyword">private</span>:
<a name="l00051"></a>00051 pthread_mutex_t mutex;
<a name="l00052"></a>00052
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keyword">public</span>:
<a name="l00055"></a><a class="code" href="classlog4tango_1_1threading_1_1Mutex.html#abc347dc995fca40b2017977630c173bc">00055</a> <span class="keyword">inline</span> <a class="code" href="classlog4tango_1_1threading_1_1Mutex.html#abc347dc995fca40b2017977630c173bc">Mutex</a>() {
<a name="l00056"></a>00056 ::pthread_mutex_init(&mutex, NULL);
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058
<a name="l00059"></a><a class="code" href="classlog4tango_1_1threading_1_1Mutex.html#ad75cb2944b40e951cb131c66a573ef3c">00059</a> <span class="keyword">inline</span> <a class="code" href="classlog4tango_1_1threading_1_1Mutex.html#ad75cb2944b40e951cb131c66a573ef3c">~Mutex</a>() {
<a name="l00060"></a>00060 ::pthread_mutex_destroy(&mutex);
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062
<a name="l00063"></a><a class="code" href="classlog4tango_1_1threading_1_1Mutex.html#a121bae8bb2ca8d412983fbb303441ed0">00063</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classlog4tango_1_1threading_1_1Mutex.html#a121bae8bb2ca8d412983fbb303441ed0">lock</a>() {
<a name="l00064"></a>00064 ::pthread_mutex_lock(&mutex);
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066
<a name="l00067"></a><a class="code" href="classlog4tango_1_1threading_1_1Mutex.html#a0689618bc67462cc3646e86de6b5f261">00067</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classlog4tango_1_1threading_1_1Mutex.html#a0689618bc67462cc3646e86de6b5f261">unlock</a>() {
<a name="l00068"></a>00068 ::pthread_mutex_unlock(&mutex);
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070 };
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="comment">//-----------------------------------------------------------------------------</span>
<a name="l00073"></a>00073 <span class="comment">// Class : ScopedLock</span>
<a name="l00074"></a>00074 <span class="comment">//-----------------------------------------------------------------------------</span>
<a name="l00075"></a>00075 <span class="keyword">class </span><a class="code" href="namespacelog4tango_1_1threading.html#ae0fb75dd01061ba7df4e4a68120507f1">ScopedLock</a>
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077 <span class="keyword">private</span>:
<a name="l00078"></a>00078 <a class="code" href="namespacelog4tango_1_1threading.html#a6ab044c515d422f490f47a2499bf1f0a">Mutex</a>& _mutex;
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="keyword">public</span>:
<a name="l00081"></a><a class="code" href="classlog4tango_1_1threading_1_1ScopedLock.html#a3c6e5abbb0fada2b3ea6432bd19862dd">00081</a> <span class="keyword">inline</span> <a class="code" href="classlog4tango_1_1threading_1_1ScopedLock.html#a3c6e5abbb0fada2b3ea6432bd19862dd">ScopedLock</a>(<a class="code" href="classlog4tango_1_1threading_1_1Mutex.html">Mutex</a> &m) : _mutex(m) {
<a name="l00082"></a>00082 _mutex.<a class="code" href="classlog4tango_1_1threading_1_1Mutex.html#a121bae8bb2ca8d412983fbb303441ed0">lock</a>();
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a><a class="code" href="classlog4tango_1_1threading_1_1ScopedLock.html#ab03de73986f5bb51e7e40d5725e725bb">00085</a> <span class="keyword">inline</span> <a class="code" href="classlog4tango_1_1threading_1_1ScopedLock.html#ab03de73986f5bb51e7e40d5725e725bb">~ScopedLock</a>() {
<a name="l00086"></a>00086 _mutex.<a class="code" href="classlog4tango_1_1threading_1_1Mutex.html#a0689618bc67462cc3646e86de6b5f261">unlock</a>();
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088 };
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <span class="comment">//-----------------------------------------------------------------------------</span>
<a name="l00091"></a>00091 <span class="comment">// Class : RecursiveMutex</span>
<a name="l00092"></a>00092 <span class="comment">//-----------------------------------------------------------------------------</span>
<a name="l00093"></a>00093 <span class="keyword">class </span>RecursiveMutex
<a name="l00094"></a>00094 {
<a name="l00095"></a>00095 <span class="keyword">public</span>:
<a name="l00096"></a>00096 <span class="comment">// ctor</span>
<a name="l00097"></a>00097 <a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html#a7bb6f1bb4ca7072b24bda6321e196fc8">RecursiveMutex</a> (<span class="keywordtype">void</span>);
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="comment">// dtor</span>
<a name="l00100"></a>00100 <a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html#a7210fe141d367494415cf8b580910fdf">~RecursiveMutex</a> (<span class="keywordtype">void</span>);
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="comment">// Locking an RecursiveMutex:</span>
<a name="l00103"></a>00103 <span class="comment">// If <timeout_> is null (the default), <lock> blocks until </span>
<a name="l00104"></a>00104 <span class="comment">// the mutex is acquired and returns 1 (true). Otherwise, </span>
<a name="l00105"></a>00105 <span class="comment">// <lock> blocks until the mutex is acquired or times out </span>
<a name="l00106"></a>00106 <span class="comment">// after <timeout_> milliseconds in which case 0 (false) is </span>
<a name="l00107"></a>00107 <span class="comment">// returned. </span>
<a name="l00108"></a>00108 <span class="keywordtype">int</span> <a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html#ab25b75795eeed61c179ba00d3b9cd4e0">lock</a> (<span class="keywordtype">long</span> timeout_ = 0);
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="comment">// Releasing an RecursiveMutex:</span>
<a name="l00111"></a>00111 <span class="comment">// Call unlock <recursion level> times (i.e. one call for </span>
<a name="l00112"></a>00112 <span class="comment">// each previous call to lock) or call unlockn just once. </span>
<a name="l00113"></a>00113 <span class="comment">// These two methods do nothing if the caller is not the</span>
<a name="l00114"></a>00114 <span class="comment">// current owner of the mutex.</span>
<a name="l00115"></a>00115 <span class="keywordtype">void</span> <a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html#a35bcfd9220d32eb5d8974acde72e9820">unlock</a> (<span class="keywordtype">void</span>);
<a name="l00116"></a>00116 <span class="keywordtype">void</span> <a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html#ae8ca497191c6f8ac476f50fe5172f777">unlockn</a> (<span class="keywordtype">void</span>);
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <span class="keyword">protected</span>:
<a name="l00119"></a>00119 <span class="comment">// guards the <recursion level> and <owner id></span>
<a name="l00120"></a><a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html#a84a463cd8c14c629e9449a1ab16aecfb">00120</a> pthread_mutex_t <a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html#a84a463cd8c14c629e9449a1ab16aecfb">guard_</a>;
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="comment">// this condition variable suspends other waiting threads </span>
<a name="l00123"></a>00123 <span class="comment">// until the mutex is available</span>
<a name="l00124"></a><a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html#abafc328ab69204599821730c657c3cba">00124</a> pthread_cond_t <a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html#abafc328ab69204599821730c657c3cba">mutex_available_</a>;
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="keyword">private</span>:
<a name="l00127"></a>00127 <span class="comment">// current level of the recursion</span>
<a name="l00128"></a>00128 <span class="keywordtype">long</span> recursion_level_;
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="comment">// current owner of the lock.</span>
<a name="l00131"></a>00131 pthread_t owner_id_;
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="comment">// dummy copy constructor and operator= to prevent copying</span>
<a name="l00134"></a>00134 <a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html#a7bb6f1bb4ca7072b24bda6321e196fc8">RecursiveMutex</a> (<span class="keyword">const</span> <a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html">RecursiveMutex</a>&);
<a name="l00135"></a>00135 <a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html">RecursiveMutex</a>& operator= (<span class="keyword">const</span> <a class="code" href="classlog4tango_1_1threading_1_1RecursiveMutex.html">RecursiveMutex</a>&);
<a name="l00136"></a>00136 };
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <span class="comment">//-----------------------------------------------------------------------------</span>
<a name="l00139"></a>00139 <span class="comment">// Class : ThreadLocalDataHolder</span>
<a name="l00140"></a>00140 <span class="comment">//-----------------------------------------------------------------------------</span>
<a name="l00141"></a>00141 <span class="preprocessor">#ifdef LOG4TANGO_HAS_NDC</span>
<a name="l00142"></a>00142 <span class="preprocessor"></span><span class="keyword">template</span><<span class="keyword">typename</span> T> <span class="keyword">class </span>ThreadLocalDataHolder {
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="keyword">private</span>:
<a name="l00145"></a>00145 pthread_key_t _key;
<a name="l00146"></a>00146
<a name="l00147"></a>00147 <span class="keyword">public</span>:
<a name="l00148"></a>00148 <span class="keyword">typedef</span> T data_type;
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="keyword">inline</span> ThreadLocalDataHolder() {
<a name="l00151"></a>00151 ::pthread_key_create(&_key, freeHolder);
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keyword">inline</span> <span class="keyword">static</span> <span class="keywordtype">void</span> freeHolder(<span class="keywordtype">void</span> *p) {
<a name="l00155"></a>00155 assert(p != NULL);
<a name="l00156"></a>00156 <span class="keyword">delete</span> <span class="keyword">reinterpret_cast<</span>T *<span class="keyword">></span>(p);
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="keyword">inline</span> ~ThreadLocalDataHolder() {
<a name="l00160"></a>00160 T *data = <span class="keyword">get</span>();
<a name="l00161"></a>00161 <span class="keywordflow">if</span> (data != NULL) {
<a name="l00162"></a>00162 <span class="keyword">delete</span> data;
<a name="l00163"></a>00163 }
<a name="l00164"></a>00164 ::pthread_key_delete(_key);
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166
<a name="l00167"></a>00167 <span class="keyword">inline</span> T* <span class="keyword">get</span>() <span class="keyword">const</span> {
<a name="l00168"></a>00168 <span class="keywordflow">return</span> <span class="keyword">reinterpret_cast<</span>T *<span class="keyword">></span>(::pthread_getspecific(_key));
<a name="l00169"></a>00169 }
<a name="l00170"></a>00170
<a name="l00171"></a>00171 <span class="keyword">inline</span> T* operator->()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keyword">get</span>(); }
<a name="l00172"></a>00172 <span class="keyword">inline</span> T& operator*()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> *<span class="keyword">get</span>(); }
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="keyword">inline</span> T* release() {
<a name="l00175"></a>00175 T* result = <span class="keyword">get</span>();
<a name="l00176"></a>00176 ::pthread_setspecific(_key, NULL);
<a name="l00177"></a>00177 <span class="keywordflow">return</span> result;
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="keyword">inline</span> <span class="keywordtype">void</span> reset(T* p = NULL) {
<a name="l00181"></a>00181 T *data = <span class="keyword">get</span>();
<a name="l00182"></a>00182 <span class="keywordflow">if</span> (data != NULL) {
<a name="l00183"></a>00183 <span class="keyword">delete</span> data;
<a name="l00184"></a>00184 }
<a name="l00185"></a>00185 ::pthread_setspecific(_key, p);
<a name="l00186"></a>00186 }
<a name="l00187"></a>00187 };
<a name="l00188"></a>00188 <span class="preprocessor">#endif //LOG4TANGO_HAS_NDC</span>
<a name="l00189"></a>00189 <span class="preprocessor"></span>
<a name="l00190"></a>00190 } <span class="comment">// namespace threading</span>
<a name="l00191"></a>00191
<a name="l00192"></a>00192 } <span class="comment">// namespace log4tango</span>
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="preprocessor">#endif // _LOG4TANGO_THREADING_PTHREADS_H</span>
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