# ParadisEO-PEOMovingObjects: thread.cpp Source File

# 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 }