thread.cpp

00001 /* 
00002 * <thread.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 <map>
00038 
00039 #include "thread.h"
00040 
00041 static std :: vector <Thread *> threads;
00042 
00043 unsigned num_act = 0;
00044 
00045 Thread :: Thread () {
00046         
00047   threads.push_back (this);
00048   act = false;
00049 }
00050 
00051 Thread :: ~ Thread () {
00052 
00053   /* Nothing ! */
00054 }
00055 
00056 extern int getNodeRank ();
00057 
00058 void Thread :: setActive () {
00059 
00060   if (! act ) {
00061 
00062     act = true;
00063     num_act ++;
00064     //    if (getNodeRank () == 1)      
00065     //   printf ("On passe a %d\n", num_act);
00066   }
00067 }
00068 
00069 void Thread :: setPassive () {
00070 
00071   if (act) {
00072 
00073    act = false;
00074     num_act --;
00075     //    if (getNodeRank () == 1)      
00076     //  printf ("On passe a %d\n", num_act);
00077 
00078   } 
00079 }
00080 
00081 bool atLeastOneActiveThread () {
00082 
00083   return num_act;
00084 }
00085 
00086 unsigned numberOfActiveThreads () {
00087 
00088   return num_act;
00089 }
00090 
00091 static void * launch (void * __arg) {
00092 
00093   Thread * thr = (Thread *) __arg;  
00094   thr -> start ();
00095   return 0;
00096 }
00097 
00098 void addThread (Thread * __hl_thread, std :: vector <pthread_t *> & __ll_threads) {
00099 
00100   pthread_t * ll_thr = new pthread_t;
00101   __ll_threads.push_back (ll_thr);
00102   pthread_create (ll_thr, 0, launch, __hl_thread); 
00103 }
00104 
00105 void joinThreads (std :: vector <pthread_t *> & __threads) {
00106 
00107   for (unsigned i = 0; i < __threads.size (); i ++)    
00108     pthread_join (* __threads [i], 0);  
00109 }

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