recv.cpp

00001 /* 
00002 * <recv.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 "comm.h"
00038 #include "tags.h"
00039 #include "worker.h"
00040 #include "scheduler.h"
00041 #include "mess.h"
00042 #include "node.h"
00043 #include "../../core/runner.h"
00044 #include "../../core/cooperative.h"
00045 #include "../../core/peo_debug.h"
00046 
00047 void receiveMessages () {
00048 
00049   cleanBuffers ();
00050     
00051   do {
00052 
00053     if (! atLeastOneActiveThread ()) {
00054       //      printDebugMessage ("debut wait");
00055       waitMessage ();
00056       //printDebugMessage ("fin wait");
00057     }
00058     
00059     int src, tag;
00060 
00061     while (probeMessage (src, tag)) {
00062       
00063       receiveMessage (src, tag);
00064       initMessage ();
00065       /*
00066       char b [1000];
00067       sprintf (b, "traitement recv %d\n", tag);
00068       printDebugMessage (b);
00069       */
00070       
00071       switch (tag) {
00072         
00073       case RUNNER_STOP_TAG:     
00074         unpackTerminationOfRunner ();   
00075         wakeUpCommunicator ();
00076         break;
00077       
00078       case COOP_TAG:
00079         //      printDebugMessage ("reception de message de cooperation");
00080         COOP_ID coop_id;
00081         unpack (coop_id);
00082         getCooperative (coop_id) -> unpack ();
00083         break;
00084 
00085       case SCHED_REQUEST_TAG:   
00086         unpackResourceRequest ();
00087         break;
00088         
00089       case SCHED_RESULT_TAG:
00090         {         
00091           /* Unpacking the resource */
00092           SERVICE_ID serv_id;
00093           unpack (serv_id);
00094           Service * serv = getService (serv_id);
00095           int dest;
00096           unpack (dest);
00097           WORKER_ID worker_id;
00098           unpack (worker_id);
00099 
00100           /* Going back ... */
00101           initMessage ();
00102           pack (worker_id);
00103           pack (serv_id); 
00104           serv -> packData ();
00105           serv -> notifySendingData ();
00106           sendMessage (dest, TASK_DATA_TAG);
00107           break;
00108         }
00109 
00110       case TASK_DATA_TAG:
00111       {
00112         WORKER_ID worker_id;
00113         unpack (worker_id);             
00114         Worker * worker = getWorker (worker_id);
00115         worker -> setSource (src);
00116         worker -> unpackData ();
00117         worker -> wakeUp ();
00118         break; 
00119       }
00120       
00121       case TASK_RESULT_TAG:
00122         {
00123           SERVICE_ID serv_id;
00124           unpack (serv_id);
00125           Service * serv = getService (serv_id);
00126           serv -> unpackResult ();
00127           break;
00128         }
00129 
00130       case TASK_DONE_TAG:
00131         unpackTaskDone ();
00132         break;
00133 
00134       default:
00135         ;
00136       };
00137     }
00138         
00139   } while (! atLeastOneActiveThread () && atLeastOneActiveRunner () /*&& ! allResourcesFree ()*/);
00140 }

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