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# communicable.cpp

    00001 /*
    00002 * <communicable.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 #include <map>
    00039 #include <cassert>
    00040
    00041 #include "communicable.h"
    00042
    00043 static std :: vector <Communicable *> key_to_comm (1); /* Vector of registered cooperators */
    00044
    00045 static std :: map <const Communicable *, unsigned> comm_to_key; /* Map of registered cooperators */
    00046
    00047 unsigned Communicable :: num_comm = 0;
    00048
    00049 Communicable :: Communicable () {
    00050
    00051   comm_to_key [this] = key = ++ num_comm;
    00052   key_to_comm.push_back (this);
    00053   sem_init (& sem_lock, 0, 1);
    00054   sem_init (& sem_stop, 0, 0);
    00055 }
    00056
    00057 Communicable :: ~ Communicable () {
    00058
    00059 }
    00060
    00061 COMM_ID Communicable :: getKey () {
    00062
    00063   return key;
    00064 }
    00065
    00066 Communicable * getCommunicable (COMM_ID __key) {
    00067
    00068   assert (__key < key_to_comm.size ());
    00069   return key_to_comm [__key];
    00070 }
    00071
    00072 COMM_ID getKey (const Communicable * __comm) {
    00073
    00074   return comm_to_key [__comm];
    00075 }
    00076
    00077 void Communicable :: lock () {
    00078
    00079   sem_wait (& sem_lock);
    00080 }
    00081
    00082 void Communicable :: unlock () {
    00083
    00084   sem_post (& sem_lock);
    00085 }
    00086
    00087 void Communicable :: stop () {
    00088
    00089   sem_wait (& sem_stop);
    00090 }
    00091
    00092 void Communicable :: resume () {
    00093
    00094   sem_post (& sem_stop);
    00095 }
    00096
    00097
    00098