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legrand cd4b27992a ParadisEO-PEO sources added 
git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@94 331e1502-861f-0410-8da2-ba01fb791d7f
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<h1>thread.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">// "thread.cpp"</span>
<a name="l00004"></a>00004
<a name="l00005"></a>00005 <span class="comment">// (c) OPAC Team, LIFL, August 2005</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 <span class="comment">/* This library is free software; you can redistribute it and/or</span>
<a name="l00008"></a>00008 <span class="comment"> modify it under the terms of the GNU Lesser General Public</span>
<a name="l00009"></a>00009 <span class="comment"> License as published by the Free Software Foundation; either</span>
<a name="l00010"></a>00010 <span class="comment"> version 2 of the License, or (at your option) any later version.</span>
<a name="l00011"></a>00011 <span class="comment"> </span>
<a name="l00012"></a>00012 <span class="comment"> This library is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00015"></a>00015 <span class="comment"> Lesser General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> </span>
<a name="l00017"></a>00017 <span class="comment"> You should have received a copy of the GNU Lesser General Public</span>
<a name="l00018"></a>00018 <span class="comment"> License along with this library; if not, write to the Free Software</span>
<a name="l00019"></a>00019 <span class="comment"> Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
<a name="l00020"></a>00020 <span class="comment"> </span>
<a name="l00021"></a>00021 <span class="comment"> Contact: paradiseo-help@lists.gforge.inria.fr</span>
<a name="l00022"></a>00022 <span class="comment">*/</span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include &lt;map&gt;</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="preprocessor">#include "thread.h"</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="keyword">static</span> std :: vector &lt;Thread *&gt; threads;
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="keywordtype">unsigned</span> num_act = 0;
<a name="l00031"></a>00031
<a name="l00032"></a><a class="code" href="class_thread.html#95c703fb8f2f27cb64f475a8c940864a">00032</a> <a class="code" href="class_thread.html#95c703fb8f2f27cb64f475a8c940864a">Thread :: Thread</a> () {
<a name="l00033"></a>00033
<a name="l00034"></a>00034 threads.push_back (<span class="keyword">this</span>);
<a name="l00035"></a>00035 <a class="code" href="class_thread.html#1b155d63bca3096ac4a1d039aea83c7c">act</a> = <span class="keyword">false</span>;
<a name="l00036"></a>00036 }
<a name="l00037"></a>00037
<a name="l00038"></a><a class="code" href="class_thread.html#37d9edd3a1a776cbc27dedff949c9726">00038</a> <a class="code" href="class_thread.html#37d9edd3a1a776cbc27dedff949c9726">Thread :: ~ Thread</a> () {
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="comment">/* Nothing ! */</span>
<a name="l00041"></a>00041 }
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="keyword">extern</span> <span class="keywordtype">int</span> getNodeRank ();
<a name="l00044"></a>00044
<a name="l00045"></a><a class="code" href="class_thread.html#e197c46f8f62ecce6d2a7fe95bdc5b38">00045</a> <span class="keywordtype">void</span> <a class="code" href="class_thread.html#e197c46f8f62ecce6d2a7fe95bdc5b38">Thread :: setActive</a> () {
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="keywordflow">if</span> (! <a class="code" href="class_thread.html#1b155d63bca3096ac4a1d039aea83c7c">act</a> ) {
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <a class="code" href="class_thread.html#1b155d63bca3096ac4a1d039aea83c7c">act</a> = <span class="keyword">true</span>;
<a name="l00050"></a>00050 num_act ++;
<a name="l00051"></a>00051 <span class="comment">// if (getNodeRank () == 1) </span>
<a name="l00052"></a>00052 <span class="comment">// printf ("On passe a %d\n", num_act);</span>
<a name="l00053"></a>00053 }
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055
<a name="l00056"></a><a class="code" href="class_thread.html#20632ffe9ddfa2a478afb0c84dc1096b">00056</a> <span class="keywordtype">void</span> <a class="code" href="class_thread.html#20632ffe9ddfa2a478afb0c84dc1096b">Thread :: setPassive</a> () {
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="keywordflow">if</span> (<a class="code" href="class_thread.html#1b155d63bca3096ac4a1d039aea83c7c">act</a>) {
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <a class="code" href="class_thread.html#1b155d63bca3096ac4a1d039aea83c7c">act</a> = <span class="keyword">false</span>;
<a name="l00061"></a>00061 num_act --;
<a name="l00062"></a>00062 <span class="comment">// if (getNodeRank () == 1) </span>
<a name="l00063"></a>00063 <span class="comment">// printf ("On passe a %d\n", num_act);</span>
<a name="l00064"></a>00064
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keywordtype">bool</span> atLeastOneActiveThread () {
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keywordflow">return</span> num_act;
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keywordtype">unsigned</span> numberOfActiveThreads () {
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="keywordflow">return</span> num_act;
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keyword">static</span> <span class="keywordtype">void</span> * launch (<span class="keywordtype">void</span> * __arg) {
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <a class="code" href="class_thread.html">Thread</a> * thr = (<a class="code" href="class_thread.html">Thread</a> *) __arg;
<a name="l00081"></a>00081 thr -&gt; start ();
<a name="l00082"></a>00082 <span class="keywordflow">return</span> 0;
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keywordtype">void</span> addThread (<a class="code" href="class_thread.html">Thread</a> * __hl_thread, std :: vector &lt;pthread_t *&gt; &amp; __ll_threads) {
<a name="l00086"></a>00086
<a name="l00087"></a>00087 pthread_t * ll_thr = <span class="keyword">new</span> pthread_t;
<a name="l00088"></a>00088 __ll_threads.push_back (ll_thr);
<a name="l00089"></a>00089 pthread_create (ll_thr, 0, launch, __hl_thread);
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="keywordtype">void</span> joinThreads (std :: vector &lt;pthread_t *&gt; &amp; __threads) {
<a name="l00093"></a>00093
<a name="l00094"></a>00094 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i &lt; __threads.size (); i ++)
<a name="l00095"></a>00095 pthread_join (* __threads [i], 0);
<a name="l00096"></a>00096 }
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