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<h1>communicable.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// "comm.cpp"</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">// (c) OPAC Team, LIFL, August 2005</span>
<a name="l00004"></a>00004
<a name="l00005"></a>00005 <span class="comment">/* </span>
<a name="l00006"></a>00006 <span class="comment"> Contact: paradiseo-help@lists.gforge.inria.fr</span>
<a name="l00007"></a>00007 <span class="comment">*/</span>
<a name="l00008"></a>00008
<a name="l00009"></a>00009 <span class="preprocessor">#include &lt;vector&gt;</span>
<a name="l00010"></a>00010 <span class="preprocessor">#include &lt;map&gt;</span>
<a name="l00011"></a>00011 <span class="preprocessor">#include &lt;cassert&gt;</span>
<a name="l00012"></a>00012
<a name="l00013"></a>00013 <span class="preprocessor">#include "communicable.h"</span>
<a name="l00014"></a>00014
<a name="l00015"></a>00015 <span class="keyword">static</span> std :: vector &lt;Communicable *&gt; key_to_comm (1); <span class="comment">/* Vector of registered cooperators */</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="keyword">static</span> std :: map &lt;const Communicable *, unsigned&gt; comm_to_key; <span class="comment">/* Map of registered cooperators */</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="keywordtype">unsigned</span> <a class="code" href="classCommunicable.html#7a6acfdc781a67c9c0ec4f17893f86c3">Communicable :: num_comm</a> = 0;
<a name="l00020"></a>00020
<a name="l00021"></a><a class="code" href="classCommunicable.html#8ae1827ecf7569b3db1ed386c7d8ad78">00021</a> <a class="code" href="classCommunicable.html#8ae1827ecf7569b3db1ed386c7d8ad78">Communicable :: Communicable</a> () {
<a name="l00022"></a>00022
<a name="l00023"></a>00023 comm_to_key [<span class="keyword">this</span>] = <a class="code" href="classCommunicable.html#605b0efeffe81326f216c9903f5bbf4c">key</a> = ++ <a class="code" href="classCommunicable.html#7a6acfdc781a67c9c0ec4f17893f86c3">num_comm</a>;
<a name="l00024"></a>00024 key_to_comm.push_back (<span class="keyword">this</span>);
<a name="l00025"></a>00025 sem_init (&amp; <a class="code" href="classCommunicable.html#cf9639312f71a2f348bc1e7789ccbd9d">sem_lock</a>, 0, 1);
<a name="l00026"></a>00026 sem_init (&amp; <a class="code" href="classCommunicable.html#29c53b9191348e0505e3bcba6d8b82b1">sem_stop</a>, 0, 0);
<a name="l00027"></a>00027 }
<a name="l00028"></a>00028
<a name="l00029"></a><a class="code" href="classCommunicable.html#2280b0dfa0d3a515fccf62c2a9fd5f41">00029</a> <a class="code" href="classCommunicable.html#2280b0dfa0d3a515fccf62c2a9fd5f41">Communicable :: ~ Communicable</a> () {
<a name="l00030"></a>00030
<a name="l00031"></a>00031 }
<a name="l00032"></a>00032
<a name="l00033"></a><a class="code" href="classCommunicable.html#db4307b69b9ccacff55fdbf84b8f50e4">00033</a> COMM_ID <a class="code" href="classCommunicable.html#db4307b69b9ccacff55fdbf84b8f50e4">Communicable :: getKey</a> () {
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="keywordflow">return</span> <a class="code" href="classCommunicable.html#605b0efeffe81326f216c9903f5bbf4c">key</a>;
<a name="l00036"></a>00036 }
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <a class="code" href="classCommunicable.html">Communicable</a> * getCommunicable (COMM_ID __key) {
<a name="l00039"></a>00039
<a name="l00040"></a>00040 assert (__key &lt; key_to_comm.size ());
<a name="l00041"></a>00041 <span class="keywordflow">return</span> key_to_comm [__key];
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043
<a name="l00044"></a>00044 COMM_ID getKey (<span class="keyword">const</span> <a class="code" href="classCommunicable.html">Communicable</a> * __comm) {
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="keywordflow">return</span> comm_to_key [__comm];
<a name="l00047"></a>00047 }
<a name="l00048"></a>00048
<a name="l00049"></a><a class="code" href="classCommunicable.html#e1f8bd1ee810fd73d44315c95998d19d">00049</a> <span class="keywordtype">void</span> <a class="code" href="classCommunicable.html#e1f8bd1ee810fd73d44315c95998d19d">Communicable :: lock</a> () {
<a name="l00050"></a>00050
<a name="l00051"></a>00051 sem_wait (&amp; <a class="code" href="classCommunicable.html#cf9639312f71a2f348bc1e7789ccbd9d">sem_lock</a>);
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053
<a name="l00054"></a><a class="code" href="classCommunicable.html#caa814847192e71f434fbf9479ede862">00054</a> <span class="keywordtype">void</span> <a class="code" href="classCommunicable.html#caa814847192e71f434fbf9479ede862">Communicable :: unlock</a> () {
<a name="l00055"></a>00055
<a name="l00056"></a>00056 sem_post (&amp; <a class="code" href="classCommunicable.html#cf9639312f71a2f348bc1e7789ccbd9d">sem_lock</a>);
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058
<a name="l00059"></a><a class="code" href="classCommunicable.html#cb53e6534b947bc889aa181d9dbbd13b">00059</a> <span class="keywordtype">void</span> <a class="code" href="classCommunicable.html#cb53e6534b947bc889aa181d9dbbd13b">Communicable :: stop</a> () {
<a name="l00060"></a>00060
<a name="l00061"></a>00061 sem_wait (&amp; <a class="code" href="classCommunicable.html#29c53b9191348e0505e3bcba6d8b82b1">sem_stop</a>);
<a name="l00062"></a>00062 }
<a name="l00063"></a>00063
<a name="l00064"></a><a class="code" href="classCommunicable.html#3306a9adb11a0ab5af342c0db9f7bb2a">00064</a> <span class="keywordtype">void</span> <a class="code" href="classCommunicable.html#3306a9adb11a0ab5af342c0db9f7bb2a">Communicable :: resume</a> () {
<a name="l00065"></a>00065
<a name="l00066"></a>00066 sem_post (&amp; <a class="code" href="classCommunicable.html#29c53b9191348e0505e3bcba6d8b82b1">sem_stop</a>);
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068
<a name="l00069"></a>00069
<a name="l00070"></a>00070
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