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PsnSprocSemaphore.cxx

Go to the documentation of this file.

/*
 * This file is part of openMask © INRIA, CNRS, Universite de Rennes 1 1993-2002, thereinafter the Software
 * 
 * The Software has been developped within the Siames Project. 
 * INRIA, the University of Rennes 1 and CNRS jointly hold intellectual property rights
 * 
 * The Software has been registered with the Agence pour la Protection des
 * Programmes (APP) under registration number IDDN.FR.001.510008.00.S.P.2001.000.41200
 *  
 * This file may be distributed under the terms of the Q Public License
 * version 1.0 as defined by Trolltech AS of Norway and appearing in the file
 * LICENSE.QPL included in the packaging of this file.
 *
 * Licensees holding valid specific licenses issued by INRIA, CNRS or Université de Rennes 1 
 * for the software may use this file in accordance with that specific license
 *
 */
#ifdef _SGI
#include <PsnSprocSemaphore.h>
#include <stdlib.h> //pour exit
#include <iostream>

PsnSprocSemaphore::PsnSprocSemaphore(const int valeurInitiale) : PsnSemaphore(valeurInitiale) {
  if(sem_init(&_semaphore,0, valeurInitiale)) {
    perror("PsnSprocSemaphore : constructeur : impossible de creer le semaphore");
    exit(0);
  }
}

PsnSprocSemaphore::~PsnSprocSemaphore() {
  sem_destroy(&_semaphore);
}

int PsnSprocSemaphore::V() {
  int ret;
#ifdef _DEBUG
  cout <<"V "<<endl;
#endif
  ret=sem_post(&_semaphore);
  if(ret) {
    perror("PsnSprocSemaphore : v() a échoué");
    exit(0);
  }
  return(ret);
}

int PsnSprocSemaphore::P() {
  int ret;
#ifdef _DEBUG
  cout <<"P ";
#endif
  ret=sem_wait(&_semaphore);
  if(ret) {
    perror("PsnSprocSemaphore : P a echoue");
  }
#ifdef _DEBUG
  cout<<ret<<";"<<endl;
#endif
  return (ret);
}

#endif

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