basicsemaphore.h

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/*******************************************************************\

                   SESAME project software license

          Copyright (C) 2002, 2003 University of Amsterdam

    This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
        of the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
             GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
      Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
                           02111-1307, USA.

      For information regarding the SESAME software project see
              http://sesamesim.sourceforge.net or email
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\*******************************************************************/

#ifndef BASICSEMAPHORE_H
#define BASICSEMAPHORE_H

#include <sys/ipc.h>

class BasicSemaphore {
  bool amOwner;
  bool isLocked;
  int id;
  key_t key;

 public:
  BasicSemaphore();
  virtual ~BasicSemaphore();

  virtual bool isConnected();

  virtual key_t create(key_t key);
  virtual void destroy();
  virtual int open(key_t key);

  virtual int tryLock();
  virtual void lock();
  virtual void unlock();
};
#endif

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