comm.cpp

00001 /* 
00002 * <comm.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 
00038 #include <mpi.h>
00039 
00040 #include "comm.h"
00041 #include "mess.h"
00042 #include "node.h"
00043 #include "param.h"
00044 #include "../../core/peo_debug.h"
00045 #include "../../core/runner.h"
00046 #include "send.h"
00047 #include "recv.h"
00048 #include "scheduler.h"
00049 
00050 static sem_t sem_comm_init;
00051 
00052 static Communicator * the_thread;
00053 
00054 Communicator :: Communicator (int * __argc, char * * * __argv) {
00055 
00056   the_thread = this;  
00057   initNode  (__argc, __argv);
00058   loadRMCParameters (* __argc, * __argv);  
00059   sem_post (& sem_comm_init);
00060 }
00061 
00062 void Communicator :: start () {
00063 
00064   while (true) {
00065     
00066     /* Zzz Zzz Zzz :-))) */
00067     sleep ();
00068     sendMessages ();
00069 
00070     if (! atLeastOneActiveRunner ())     
00071       break;
00072     receiveMessages ();    
00073   }
00074   waitBuffers ();  
00075   printDebugMessage ("finalizing");
00076   MPI_Finalize ();  
00077 }
00078 
00079 void initCommunication () {
00080 
00081   sem_init (& sem_comm_init, 0, 0);
00082 }
00083 
00084 void waitNodeInitialization () {
00085 
00086   sem_wait (& sem_comm_init);
00087 }
00088 
00089 void wakeUpCommunicator () {
00090 
00091   the_thread -> wakeUp ();
00092 }
00093 
00094 
00095 

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