send.cpp

00001 /* 
00002 * <send.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 <mpi.h>
00038 #include <semaphore.h>
00039 #include <queue>
00040 
00041 #include "tags.h"
00042 #include "comm.h"
00043 #include "worker.h"
00044 #include "scheduler.h"
00045 #include "mess.h"
00046 #include "node.h"
00047 #include "../../core/cooperative.h"
00048 #include "../../core/peo_debug.h"
00049 
00050 #define TO_ALL -1
00051 
00052 typedef struct {
00053 
00054   Communicable * comm;
00055   int to;
00056   int tag;
00057 
00058 } SEND_REQUEST;
00059         
00060 static std :: queue <SEND_REQUEST> mess;
00061 
00062 static sem_t sem_send;
00063 
00064 void initSending () {
00065 
00066   sem_init (& sem_send, 0, 1);
00067 }
00068 
00069 void send (Communicable * __comm, int __to, int __tag) {
00070 
00071   SEND_REQUEST req;  
00072   req.comm = __comm;
00073   req.to = __to;
00074   req.tag = __tag;
00075 
00076   sem_wait (& sem_send);
00077   mess.push (req);
00078   sem_post (& sem_send);
00079   wakeUpCommunicator ();
00080 }
00081 
00082 void sendToAll (Communicable * __comm, int __tag) {
00083   
00084   send (__comm, TO_ALL, __tag);
00085 }
00086 
00087 void sendMessages () {
00088 
00089   sem_wait (& sem_send);
00090 
00091   while (! mess.empty ()) {
00092     
00093     SEND_REQUEST req = mess.front ();
00094     /*
00095     char b [1000];
00096     sprintf (b, "traitement send %d\n", req.tag);
00097     printDebugMessage (b);
00098     */
00099     
00100     Communicable * comm = req.comm;
00101 
00102     initMessage ();
00103 
00104     switch (req.tag) {
00105 
00106     case RUNNER_STOP_TAG:
00107       dynamic_cast <Runner *> (comm) -> packTermination ();            
00108       dynamic_cast <Runner *> (comm) -> notifySendingTermination ();            
00109       break;
00110 
00111     case COOP_TAG:
00112       dynamic_cast <Cooperative *> (comm) -> pack ();      
00113       dynamic_cast <Cooperative *> (comm) -> notifySending ();      
00114       break;
00115           
00116     case SCHED_REQUEST_TAG:
00117       dynamic_cast <Service *> (comm) -> packResourceRequest ();
00118       dynamic_cast <Service *> (comm) -> notifySendingResourceRequest ();            
00119       break;
00120 
00121     case TASK_RESULT_TAG:
00122       dynamic_cast <Worker *> (comm) -> packResult ();
00123       dynamic_cast <Worker *> (comm) -> notifySendingResult ();
00124       break;
00125 
00126     case TASK_DONE_TAG:
00127       dynamic_cast <Worker *> (comm) -> packTaskDone ();
00128       dynamic_cast <Worker *> (comm) -> notifySendingTaskDone ();
00129       break;
00130       
00131     default :
00132       break;
00133 
00134     };
00135     
00136     if (req.to == TO_ALL)
00137       sendMessageToAll (req.tag);
00138     else
00139       sendMessage (req.to, req.tag);
00140     mess.pop ();
00141   }
00142 
00143   sem_post (& sem_send);  
00144 }

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