worker.cpp

00001 /* 
00002 * <worker.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 "tags.h"
00040 #include "send.h"
00041 #include "node.h"
00042 #include "schema.h"
00043 #include "worker.h"
00044 #include "mess.h"
00045 #include "../../core/peo_debug.h"
00046 
00047 static std :: vector <Worker *> key_to_worker (1); /* Vector of registered workers */
00048 
00049 Worker * getWorker (WORKER_ID __key) {
00050 
00051   return key_to_worker [__key];  
00052 }
00053 
00054 Worker :: Worker () {
00055   
00056   toto = false;
00057   id = key_to_worker.size ();
00058   key_to_worker.push_back (this);
00059 }
00060 
00061 void Worker :: packResult () {
00062   
00063   pack (serv_id);
00064   serv -> packResult ();    
00065 }
00066 
00067 void Worker :: unpackData () {
00068 
00069   printDebugMessage ("unpacking the ID. of the service.");
00070   unpack (serv_id);
00071   serv = getService (serv_id); 
00072   printDebugMessage ("found the service.");
00073   serv -> unpackData (); 
00074   printDebugMessage ("unpacking the data.");
00075   setActive ();
00076 }
00077 
00078 void Worker :: packTaskDone () {
00079 
00080   pack (getNodeRank ());
00081   pack (id);
00082 }
00083 
00084 void Worker :: notifySendingResult () {
00085 
00086   /* Notifying the scheduler of the termination */
00087   toto = true;
00088   wakeUp ();
00089 }
00090 
00091 void Worker :: notifySendingTaskDone () {
00092 
00093   setPassive ();
00094 }
00095   
00096 void Worker :: setSource (int __rank) {
00097 
00098   src = __rank;
00099 }
00100 
00101 void Worker :: start () {
00102 
00103   while (true) {
00104     
00105     sleep (); 
00106 
00107     if (! atLeastOneActiveRunner ())
00108       break;
00109     
00110     if (toto) {
00111       send (this, my_node -> rk_sched, TASK_DONE_TAG);  
00112       toto = false;
00113     }
00114     else {
00115 
00116       printDebugMessage ("executing the task.");
00117       serv -> execute ();   
00118       send (this, src, TASK_RESULT_TAG);    
00119     }
00120   }
00121 }

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