/* -*- C++ -*- */
// $Id: Shared_Memory.h,v 4.6 1998/10/20 02:34:05 levine Exp $


// ============================================================================
//
// = LIBRARY
//    ace
//
// = FILENAME
//    Shared_Memory.h
//
// = AUTHOR
//    Doug Schmidt
//
// ============================================================================

#ifndef ACE_SHARED_MEMORY_H
#define ACE_SHARED_MEMORY_H

#include "ace/ACE.h"

#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */

class ACE_Export ACE_Shared_Memory
{
  // = TITLE
  //     This base class adapts both System V shared memory and "BSD"
  //     mmap to a common API.
  //
  // = DESCRIPTION
  //     This is a very simple-minded wrapper, i.e., it really is only
  //     useful for allocating large contiguous chunks of shared
  //     memory.  For a much more sophisticated version, please check
  //     out the <ACE_Malloc> class.
public:
  virtual ~ACE_Shared_Memory (void);

  // = Note that all the following methods are pure virtual.
  virtual int close (void) = 0;
  virtual int remove (void) = 0;
  virtual void *malloc (size_t = 0) = 0;
  virtual int free (void *p) = 0;
  virtual int get_segment_size (void) const = 0;
  virtual ACE_HANDLE get_id (void) const = 0;
};
#endif /* ACE_SHARED_MEMORY_H */
