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<h1>threadUtils.hpp</h1><a href="threadUtils_8hpp.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"> * anytun</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * The secure anycast tunneling protocol (satp) defines a protocol used</span>
<a name="l00005"></a>00005 <span class="comment"> * for communication between any combination of unicast and anycast</span>
<a name="l00006"></a>00006 <span class="comment"> * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel</span>
<a name="l00007"></a>00007 <span class="comment"> * mode and allows tunneling of every ETHER TYPE protocol (e.g.</span>
<a name="l00008"></a>00008 <span class="comment"> * ethernet, ip, arp ...). satp directly includes cryptography and</span>
<a name="l00009"></a>00009 <span class="comment"> * message authentication based on the methodes used by SRTP. It is</span>
<a name="l00010"></a>00010 <span class="comment"> * intended to deliver a generic, scaleable and secure solution for</span>
<a name="l00011"></a>00011 <span class="comment"> * tunneling and relaying of packets of any protocol.</span>
<a name="l00012"></a>00012 <span class="comment"> *</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * Copyright (C) 2007 anytun.org <satp@wirdorange.org></span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * This program is free software; you can redistribute it and/or modify</span>
<a name="l00017"></a>00017 <span class="comment"> * it under the terms of the GNU General Public License version 2</span>
<a name="l00018"></a>00018 <span class="comment"> * as published by the Free Software Foundation.</span>
<a name="l00019"></a>00019 <span class="comment"> *</span>
<a name="l00020"></a>00020 <span class="comment"> * This program 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 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 General Public License</span>
<a name="l00026"></a>00026 <span class="comment"> * along with this program (see the file COPYING included with this</span>
<a name="l00027"></a>00027 <span class="comment"> * distribution); if not, write to the Free Software Foundation, Inc.,</span>
<a name="l00028"></a>00028 <span class="comment"> * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
<a name="l00029"></a>00029 <span class="comment"> */</span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="preprocessor">#ifndef _THREADUTILS_HPP_</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#define _THREADUTILS_HPP_</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <stdexcept></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <semaphore.h></span>
<a name="l00036"></a>00036
<a name="l00037"></a><a class="code" href="classMutex.html">00037</a> <span class="keyword">class </span><a class="code" href="classMutex.html">Mutex</a>
<a name="l00038"></a>00038 {
<a name="l00039"></a>00039 <span class="keyword">public</span>:
<a name="l00040"></a><a class="code" href="classMutex.html#593423d868daf926c7b0d63a833ae29a">00040</a> <a class="code" href="classMutex.html#593423d868daf926c7b0d63a833ae29a">Mutex</a>()
<a name="l00041"></a>00041 {
<a name="l00042"></a>00042 <span class="keywordflow">if</span>(pthread_mutex_init(&<a class="code" href="classMutex.html#8feb0b01916c1feedd1f0c0dcd74081b">mutex</a>,NULL))
<a name="l00043"></a>00043 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"can't create mutex"</span>);
<a name="l00044"></a>00044 }
<a name="l00045"></a>00045
<a name="l00046"></a><a class="code" href="classMutex.html#c9e9182407f5f74892318607888e9be4">00046</a> <a class="code" href="classMutex.html#c9e9182407f5f74892318607888e9be4">~Mutex</a>()
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048 pthread_mutex_destroy(&<a class="code" href="classMutex.html#8feb0b01916c1feedd1f0c0dcd74081b">mutex</a>);
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keyword">private</span>:
<a name="l00052"></a>00052 <a class="code" href="classMutex.html#593423d868daf926c7b0d63a833ae29a">Mutex</a>(<span class="keyword">const</span> <a class="code" href="classMutex.html">Mutex</a>& src);
<a name="l00053"></a>00053 <span class="keywordtype">void</span> <a class="code" href="classMutex.html#030a11400d00ef97813c6b232a5e3f43">operator=</a>(<span class="keyword">const</span> <a class="code" href="classMutex.html">Mutex</a>& src);
<a name="l00054"></a>00054
<a name="l00055"></a><a class="code" href="classMutex.html#d91be808bf0a60a16f10b897ec246d3a">00055</a> <span class="keywordtype">void</span> <a class="code" href="classMutex.html#d91be808bf0a60a16f10b897ec246d3a">lock</a>()
<a name="l00056"></a>00056 {
<a name="l00057"></a>00057 <span class="keywordflow">if</span>(pthread_mutex_lock(&<a class="code" href="classMutex.html#8feb0b01916c1feedd1f0c0dcd74081b">mutex</a>))
<a name="l00058"></a>00058 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"can't lock mutex"</span>);
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060
<a name="l00061"></a><a class="code" href="classMutex.html#546a5b797ba29959357586aa2b3740a8">00061</a> <span class="keywordtype">void</span> <a class="code" href="classMutex.html#546a5b797ba29959357586aa2b3740a8">unlock</a>()
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063 <span class="keywordflow">if</span>(pthread_mutex_unlock(&<a class="code" href="classMutex.html#8feb0b01916c1feedd1f0c0dcd74081b">mutex</a>))
<a name="l00064"></a>00064 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"can't unlock mutex"</span>);
<a name="l00065"></a>00065 }
<a name="l00066"></a><a class="code" href="classMutex.html#5bf7608e05250fb524a1229bcf83ece3">00066</a> <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classLock.html">Lock</a>;
<a name="l00067"></a><a class="code" href="classMutex.html#0705c7682858f6dcf7fe85cba92f0a5c">00067</a> <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classCondition.html">Condition</a>;
<a name="l00068"></a><a class="code" href="classMutex.html#8feb0b01916c1feedd1f0c0dcd74081b">00068</a> pthread_mutex_t <a class="code" href="classMutex.html#8feb0b01916c1feedd1f0c0dcd74081b">mutex</a>;
<a name="l00069"></a>00069 };
<a name="l00070"></a>00070
<a name="l00071"></a>00071
<a name="l00072"></a><a class="code" href="classLock.html">00072</a> <span class="keyword">class </span><a class="code" href="classLock.html">Lock</a>
<a name="l00073"></a>00073 {
<a name="l00074"></a>00074 <span class="keyword">public</span>:
<a name="l00075"></a><a class="code" href="classLock.html#2c786576eddddb484a6a02a7dea52904">00075</a> <a class="code" href="classLock.html#2c786576eddddb484a6a02a7dea52904">Lock</a>(<a class="code" href="classMutex.html">Mutex</a> &m) : <a class="code" href="classLock.html#41f8817641e260bddb93a7a710736037">mutex</a>(m)
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077 <a class="code" href="classLock.html#41f8817641e260bddb93a7a710736037">mutex</a>.<a class="code" href="classMutex.html#d91be808bf0a60a16f10b897ec246d3a">lock</a>();
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079
<a name="l00080"></a><a class="code" href="classLock.html#7ab6d9485c8665bb3643710432882971">00080</a> <a class="code" href="classLock.html#7ab6d9485c8665bb3643710432882971">~Lock</a>()
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 <a class="code" href="classLock.html#41f8817641e260bddb93a7a710736037">mutex</a>.<a class="code" href="classMutex.html#546a5b797ba29959357586aa2b3740a8">unlock</a>();
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keyword">private</span>:
<a name="l00086"></a>00086 <a class="code" href="classLock.html#2c786576eddddb484a6a02a7dea52904">Lock</a>(<span class="keyword">const</span> <a class="code" href="classLock.html">Lock</a>& src);
<a name="l00087"></a>00087 <span class="keywordtype">void</span> <a class="code" href="classLock.html#6beb534a89b213d70e4b3bb9b3cde217">operator=</a>(<span class="keyword">const</span> <a class="code" href="classLock.html">Lock</a>& src);
<a name="l00088"></a>00088
<a name="l00089"></a><a class="code" href="classLock.html#41f8817641e260bddb93a7a710736037">00089</a> <a class="code" href="classMutex.html">Mutex</a> &<a class="code" href="classLock.html#41f8817641e260bddb93a7a710736037">mutex</a>;
<a name="l00090"></a>00090 };
<a name="l00091"></a>00091
<a name="l00092"></a><a class="code" href="classCondition.html">00092</a> <span class="keyword">class </span><a class="code" href="classCondition.html">Condition</a>
<a name="l00093"></a>00093 {
<a name="l00094"></a>00094 <span class="keyword">public</span>:
<a name="l00095"></a><a class="code" href="classCondition.html#f11513db4fcbde93961fa0b65e7ab764">00095</a> <a class="code" href="classCondition.html#f11513db4fcbde93961fa0b65e7ab764">Condition</a>()
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 <span class="keywordflow">if</span>(pthread_cond_init(&<a class="code" href="classCondition.html#4c8982005641d63b696f671b28e3706d">cond</a>, NULL))
<a name="l00098"></a>00098 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"can't create condition"</span>);
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100
<a name="l00101"></a><a class="code" href="classCondition.html#b42f6d2dfb2d0de4bed4ed5032d4a8fc">00101</a> <a class="code" href="classCondition.html#b42f6d2dfb2d0de4bed4ed5032d4a8fc">~Condition</a>()
<a name="l00102"></a>00102 {
<a name="l00103"></a>00103 pthread_cond_destroy(&<a class="code" href="classCondition.html#4c8982005641d63b696f671b28e3706d">cond</a>);
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105
<a name="l00106"></a><a class="code" href="classCondition.html#0bb9ca22c3c755d0ed8c7483a857567a">00106</a> <span class="keywordtype">void</span> <a class="code" href="classCondition.html#0bb9ca22c3c755d0ed8c7483a857567a">wait</a>()
<a name="l00107"></a>00107 {
<a name="l00108"></a>00108 <a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">mutex</a>.<a class="code" href="classMutex.html#d91be808bf0a60a16f10b897ec246d3a">lock</a>();
<a name="l00109"></a>00109 <span class="keywordflow">if</span>(pthread_cond_wait(&<a class="code" href="classCondition.html#4c8982005641d63b696f671b28e3706d">cond</a>, &<a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">mutex</a>.<a class="code" href="classMutex.html#8feb0b01916c1feedd1f0c0dcd74081b">mutex</a>))
<a name="l00110"></a>00110 {
<a name="l00111"></a>00111 <a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">mutex</a>.<a class="code" href="classMutex.html#546a5b797ba29959357586aa2b3740a8">unlock</a>();
<a name="l00112"></a>00112 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error on waiting for condition"</span>);
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114 <a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">mutex</a>.<a class="code" href="classMutex.html#546a5b797ba29959357586aa2b3740a8">unlock</a>();
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116
<a name="l00117"></a><a class="code" href="classCondition.html#974c8fd419e6014028dc4147cc49ce56">00117</a> <span class="keywordtype">void</span> <a class="code" href="classCondition.html#974c8fd419e6014028dc4147cc49ce56">signal</a>()
<a name="l00118"></a>00118 {
<a name="l00119"></a>00119 <a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">mutex</a>.<a class="code" href="classMutex.html#d91be808bf0a60a16f10b897ec246d3a">lock</a>();
<a name="l00120"></a>00120 <span class="keywordflow">if</span>(pthread_cond_signal(&<a class="code" href="classCondition.html#4c8982005641d63b696f671b28e3706d">cond</a>))
<a name="l00121"></a>00121 {
<a name="l00122"></a>00122 <a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">mutex</a>.<a class="code" href="classMutex.html#546a5b797ba29959357586aa2b3740a8">unlock</a>();
<a name="l00123"></a>00123 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"can't signal condition"</span>);
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125 <a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">mutex</a>.<a class="code" href="classMutex.html#546a5b797ba29959357586aa2b3740a8">unlock</a>();
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a><a class="code" href="classCondition.html#15d88ea71e837f967d13d805d675cc5b">00128</a> <span class="keywordtype">void</span> <a class="code" href="classCondition.html#15d88ea71e837f967d13d805d675cc5b">broadcast</a>()
<a name="l00129"></a>00129 {
<a name="l00130"></a>00130 <a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">mutex</a>.<a class="code" href="classMutex.html#d91be808bf0a60a16f10b897ec246d3a">lock</a>();
<a name="l00131"></a>00131 <span class="keywordflow">if</span>(pthread_cond_broadcast(&<a class="code" href="classCondition.html#4c8982005641d63b696f671b28e3706d">cond</a>))
<a name="l00132"></a>00132 {
<a name="l00133"></a>00133 <a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">mutex</a>.<a class="code" href="classMutex.html#546a5b797ba29959357586aa2b3740a8">unlock</a>();
<a name="l00134"></a>00134 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"can't broadcast condition"</span>);
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136 <a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">mutex</a>.<a class="code" href="classMutex.html#546a5b797ba29959357586aa2b3740a8">unlock</a>();
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="keyword">private</span>:
<a name="l00140"></a><a class="code" href="classCondition.html#4c8982005641d63b696f671b28e3706d">00140</a> pthread_cond_t <a class="code" href="classCondition.html#4c8982005641d63b696f671b28e3706d">cond</a>;
<a name="l00141"></a><a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">00141</a> <a class="code" href="classMutex.html">Mutex</a> <a class="code" href="classCondition.html#01622814c6a21250677c2b9cbfc86bfb">mutex</a>;
<a name="l00142"></a>00142 };
<a name="l00143"></a>00143
<a name="l00144"></a><a class="code" href="classSemaphore.html">00144</a> <span class="keyword">class </span><a class="code" href="classSemaphore.html">Semaphore</a>
<a name="l00145"></a>00145 {
<a name="l00146"></a>00146 <span class="keyword">public</span>:
<a name="l00147"></a><a class="code" href="classSemaphore.html#570698c680a467b9b0a708635149d54a">00147</a> <a class="code" href="classSemaphore.html#570698c680a467b9b0a708635149d54a">Semaphore</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> initVal=0)
<a name="l00148"></a>00148 {
<a name="l00149"></a>00149 <span class="keywordflow">if</span>(sem_init(&<a class="code" href="classSemaphore.html#23e62b0971c229ddf106e3ff71d688d6">sem</a>, 0, initVal))
<a name="l00150"></a>00150 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"can't create semaphore"</span>);
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152
<a name="l00153"></a><a class="code" href="classSemaphore.html#633658a6fde276bffc912028725c6ade">00153</a> <a class="code" href="classSemaphore.html#633658a6fde276bffc912028725c6ade">~Semaphore</a>()
<a name="l00154"></a>00154 {
<a name="l00155"></a>00155 sem_destroy(&<a class="code" href="classSemaphore.html#23e62b0971c229ddf106e3ff71d688d6">sem</a>);
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157
<a name="l00158"></a><a class="code" href="classSemaphore.html#71126a13a22f2722e22a2b69860a5371">00158</a> <span class="keywordtype">void</span> <a class="code" href="classSemaphore.html#71126a13a22f2722e22a2b69860a5371">down</a>()
<a name="l00159"></a>00159 {
<a name="l00160"></a>00160 <span class="keywordflow">if</span>(sem_wait(&<a class="code" href="classSemaphore.html#23e62b0971c229ddf106e3ff71d688d6">sem</a>))
<a name="l00161"></a>00161 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error on semaphore down"</span>);
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163
<a name="l00164"></a><a class="code" href="classSemaphore.html#15fb190263808234fc2562f39f523082">00164</a> <span class="keywordtype">void</span> <a class="code" href="classSemaphore.html#15fb190263808234fc2562f39f523082">up</a>()
<a name="l00165"></a>00165 {
<a name="l00166"></a>00166 <span class="keywordflow">if</span>(sem_post(&<a class="code" href="classSemaphore.html#23e62b0971c229ddf106e3ff71d688d6">sem</a>))
<a name="l00167"></a>00167 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error on semaphore up"</span>);
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="keyword">private</span>:
<a name="l00171"></a><a class="code" href="classSemaphore.html#23e62b0971c229ddf106e3ff71d688d6">00171</a> sem_t <a class="code" href="classSemaphore.html#23e62b0971c229ddf106e3ff71d688d6">sem</a>;
<a name="l00172"></a>00172 };
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="preprocessor">#endif</span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Tue Nov 27 14:11:51 2007 for anytun by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.1 </small></address>
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