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# communicable.cpp

    00001 // -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
    00002
    00003 // "comm.cpp"
    00004
    00005 // (c) OPAC Team, LIFL, August 2005
    00006
    00007 /* This library is free software; you can redistribute it and/or
    00008    modify it under the terms of the GNU Lesser General Public
    00009    License as published by the Free Software Foundation; either
    00010    version 2 of the License, or (at your option) any later version.
    00011
    00012    This library is distributed in the hope that it will be useful,
    00013    but WITHOUT ANY WARRANTY; without even the implied warranty of
    00014    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00015    Lesser General Public License for more details.
    00016
    00017    You should have received a copy of the GNU Lesser General Public
    00018    License along with this library; if not, write to the Free Software
    00019    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
    00020
    00021    Contact: paradiseo-help@lists.gforge.inria.fr
    00022 */
    00023
    00024 #include <vector>
    00025 #include <map>
    00026 #include <cassert>
    00027
    00028 #include "communicable.h"
    00029
    00030 static std :: vector <Communicable *> key_to_comm (1); /* Vector of registered cooperators */
    00031
    00032 static std :: map <const Communicable *, unsigned> comm_to_key; /* Map of registered cooperators */
    00033
    00034 unsigned Communicable :: num_comm = 0;
    00035
    00036 Communicable :: Communicable () {
    00037
    00038   comm_to_key [this] = key = ++ num_comm;
    00039   key_to_comm.push_back (this);
    00040   sem_init (& sem_lock, 0, 1);
    00041   sem_init (& sem_stop, 0, 0);
    00042 }
    00043
    00044 Communicable :: ~ Communicable () {
    00045
    00046 }
    00047
    00048 COMM_ID Communicable :: getKey () {
    00049
    00050   return key;
    00051 }
    00052
    00053 Communicable * getCommunicable (COMM_ID __key) {
    00054
    00055   assert (__key < key_to_comm.size ());
    00056   return key_to_comm [__key];
    00057 }
    00058
    00059 COMM_ID getKey (const Communicable * __comm) {
    00060
    00061   return comm_to_key [__comm];
    00062 }
    00063
    00064 void Communicable :: lock () {
    00065
    00066   sem_wait (& sem_lock);
    00067 }
    00068
    00069 void Communicable :: unlock () {
    00070
    00071   sem_post (& sem_lock);
    00072 }
    00073
    00074 void Communicable :: stop () {
    00075
    00076   sem_wait (& sem_stop);
    00077 }
    00078
    00079 void Communicable :: resume () {
    00080
    00081   sem_post (& sem_stop);
    00082 }
    00083
    00084
    00085