sharedmemmapping.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.

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    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
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                           02111-1307, USA.

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

#ifndef SHAREDMEMMAPPING_H
#define SHAREDMEMMAPPING_H

#include "basicsharedmemqueue.h"
#include "sharedmemmappingfactory.h"
#include "mappingsaxhandler.h"
#include "mappingcontainer.h"
#include "mapping.h"

class SAX2XMLReader;

class SharedMemMapping : public Mapping {
  SharedMemMappingFactory factory;
  BasicSharedMemQueue keyChannel;
  key_t keyChannelKey;

 public:

  SharedMemMapping(const char *filename, side_t side);
  virtual ~SharedMemMapping();

  key_t openKeyChannel(key_t key);

  key_t getKey() {return keyChannelKey;}

  bool open();
  void close();

 private:
  bool openChannel(ChannelMapping *channel);
  void closeChannel(ChannelMapping *channel);

  bool sendKey(key_t);
  key_t receiveKey();
};
#endif

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