runner.cpp

00001 /* 
00002 * <runner.cpp>
00003 * Copyright (C) DOLPHIN Project-Team, INRIA Futurs, 2006-2007
00004 * (C) OPAC Team, LIFL, 2002-2007
00005 *
00006 * Sebastien Cahon, Alexandru-Adrian Tantar
00007 *
00008 * This software is governed by the CeCILL license under French law and
00009 * abiding by the rules of distribution of free software.  You can  use,
00010 * modify and/ or redistribute the software under the terms of the CeCILL
00011 * license as circulated by CEA, CNRS and INRIA at the following URL
00012 * "http://www.cecill.info".
00013 *
00014 * As a counterpart to the access to the source code and  rights to copy,
00015 * modify and redistribute granted by the license, users are provided only
00016 * with a limited warranty  and the software's author,  the holder of the
00017 * economic rights,  and the successive licensors  have only  limited liability.
00018 *
00019 * In this respect, the user's attention is drawn to the risks associated
00020 * with loading,  using,  modifying and/or developing or reproducing the
00021 * software by the user in light of its specific status of free software,
00022 * that may mean  that it is complicated to manipulate,  and  that  also
00023 * therefore means  that it is reserved for developers  and  experienced
00024 * professionals having in-depth computer knowledge. Users are therefore
00025 * encouraged to load and test the software's suitability as regards their
00026 * requirements in conditions enabling the security of their systems and/or
00027 * data to be ensured and,  more generally, to use and operate it in the
00028 * same conditions as regards security.
00029 * The fact that you are presently reading this means that you have had
00030 * knowledge of the CeCILL license and that you accept its terms.
00031 *
00032 * ParadisEO WebSite : http://paradiseo.gforge.inria.fr
00033 * Contact: paradiseo-help@lists.gforge.inria.fr
00034 *
00035 */
00036 
00037 #include <vector>
00038 
00039 #include "runner.h"
00040 #include "reac_thread.h"
00041 #include "peo_debug.h"
00042 #include "messaging.h"
00043 
00044 static unsigned num_act = 0; /* Number of active runners */
00045 
00046 static std :: vector <pthread_t *> ll_threads; /* Low-level runner threads */ 
00047 
00048 static std :: vector <Runner *> the_runners;
00049 
00050 static unsigned num_runners = 0;
00051 
00052 Runner :: Runner () {
00053 
00054   id = ++ num_runners;
00055   the_runners.push_back (this);
00056   sem_init (& sem_start, 0, 0);
00057   num_act ++;  
00058 }
00059 
00060 extern int getNodeRank ();
00061 
00062 extern int getNumberOfNodes ();
00063 
00064 void unpackTerminationOfRunner () {
00065   
00066   RUNNER_ID id;
00067   unpack (id);    
00068   num_act --;
00069   printDebugMessage ("I'm noticed of the termination of a runner");
00070   if (! num_act) {
00071     printDebugMessage ("all the runners have terminated. Now stopping the reactive threads.");
00072     stopReactiveThreads ();
00073   }
00074 }
00075 
00076 bool atLeastOneActiveRunner () {
00077 
00078   return num_act;
00079 }
00080 
00081 RUNNER_ID Runner :: getID () {
00082 
00083   return id;
00084 }
00085 
00086 void Runner :: start () {
00087 
00088   setActive ();
00089   sem_post (& sem_start);
00090   run ();
00091   terminate ();
00092 }
00093 
00094 void Runner :: notifySendingTermination () {
00095 
00096   /*
00097   char b [1000];
00098   sprintf (b, "Il reste encore %d !!!!!!!!!!!!", n);
00099   printDebugMessage (b);
00100   */
00101   printDebugMessage ("je suis informe que tout le monde a recu ma terminaison");
00102   setPassive ();
00103   
00104 }
00105 
00106 void Runner :: waitStarting () {
00107 
00108   sem_wait (& sem_start);
00109 }
00110 
00111 Runner * getRunner (RUNNER_ID __key) {
00112 
00113   return dynamic_cast <Runner *> (getCommunicable (__key));
00114 }
00115 
00116 void startRunners () {
00117   
00118   /* Runners */
00119   for (unsigned i = 0; i < the_runners.size (); i ++)
00120     if (the_runners [i] -> isLocal ()) {
00121       addThread (the_runners [i], ll_threads);
00122       the_runners [i] -> waitStarting ();
00123     }
00124   printDebugMessage ("launched the parallel runners");
00125 }
00126 
00127 
00128 void joinRunners () {
00129 
00130 
00131   joinThreads (ll_threads);
00132 }

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