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# comm.cpp

    00001 // -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
    00002
    00003 // "comm.cpp"
    00004
    00005 // (c) OPAC Team, LIFL, August 2005
    00006
    00007 /* This library is free software; you can redistribute it and/or
    00008    modify it under the terms of the GNU Lesser General Public
    00009    License as published by the Free Software Foundation; either
    00010    version 2 of the License, or (at your option) any later version.
    00011
    00012    This library is distributed in the hope that it will be useful,
    00013    but WITHOUT ANY WARRANTY; without even the implied warranty of
    00014    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00015    Lesser General Public License for more details.
    00016
    00017    You should have received a copy of the GNU Lesser General Public
    00018    License along with this library; if not, write to the Free Software
    00019    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
    00020
    00021    Contact: paradiseo-help@lists.gforge.inria.fr
    00022 */
    00023
    00024
    00025 #include <mpi.h>
    00026
    00027 #include "comm.h"
    00028 #include "mess.h"
    00029 #include "node.h"
    00030 #include "param.h"
    00031 #include "../../core/peo_debug.h"
    00032 #include "../../core/runner.h"
    00033 #include "send.h"
    00034 #include "recv.h"
    00035 #include "scheduler.h"
    00036
    00037 static sem_t sem_comm_init;
    00038
    00039 static Communicator * the_thread;
    00040
    00041 Communicator :: Communicator (int * __argc, char * * * __argv) {
    00042
    00043   the_thread = this;
    00044   initNode  (__argc, __argv);
    00045   loadRMCParameters (* __argc, * __argv);
    00046   sem_post (& sem_comm_init);
    00047 }
    00048
    00049 void Communicator :: start () {
    00050
    00051   while (true) {
    00052
    00053     /* Zzz Zzz Zzz :-))) */
    00054     sleep ();
    00055     sendMessages ();
    00056
    00057     if (! atLeastOneActiveRunner ())
    00058       break;
    00059     receiveMessages ();
    00060   }
    00061   waitBuffers ();
    00062   printDebugMessage ("finalizing");
    00063   MPI_Finalize ();
    00064 }
    00065
    00066 void initCommunication () {
    00067
    00068   sem_init (& sem_comm_init, 0, 0);
    00069 }
    00070
    00071 void waitNodeInitialization () {
    00072
    00073   sem_wait (& sem_comm_init);
    00074 }
    00075
    00076 void wakeUpCommunicator () {
    00077
    00078   the_thread -> wakeUp ();
    00079 }
    00080
    00081
    00082