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/* -*- C++ -*- */
//=============================================================================
/**
* @file Shared_Memory_SV.h
*
* $Id$
*
* @author Doug Schmidt
*/
//=============================================================================
#ifndef ACE_SHARED_MALLOC_SV_H
#define ACE_SHARED_MALLOC_SV_H
#include "ace/pre.h"
#include "ace/Shared_Memory.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/SV_Shared_Memory.h"
/**
* @class ACE_Shared_Memory_SV
*
* @brief Shared memory wrapper based on System V shared memory.
*
* This class provides a very simple-minded shared memory
* manager. For more a powerful memory allocator please see
* <ACE_Malloc>.
*/
class ACE_Export ACE_Shared_Memory_SV : public ACE_Shared_Memory
{
public:
enum
{
ACE_CREATE = IPC_CREAT,
ACE_OPEN = 0
};
// = Initialization and termination methods.
ACE_Shared_Memory_SV (void);
ACE_Shared_Memory_SV (key_t id,
int length,
int create = ACE_Shared_Memory_SV::ACE_OPEN,
int perms = ACE_DEFAULT_FILE_PERMS,
void *addr = 0,
int flags = 0);
int open (key_t id,
int length,
int create = ACE_Shared_Memory_SV::ACE_OPEN,
int perms = ACE_DEFAULT_FILE_PERMS,
void *addr = 0,
int flags = 0);
/// Close down the shared memory segment.
virtual int close (void);
/// Remove the underlying shared memory segment.
virtual int remove (void);
// = Allocation and deallocation methods.
/// Create a new chuck of memory containing <size> bytes.
virtual void *malloc (size_t = 0);
/// Free a chuck of memory allocated by <ACE_Shared_Memory_SV::malloc>.
virtual int free (void *p);
/// Return the size of the shared memory segment.
virtual int get_segment_size (void) const;
/// Return the ID of the shared memory segment (i.e., a System V
/// shared memory internal id).
virtual ACE_HANDLE get_id (void) const;
/// Dump the state of an object.
void dump (void) const;
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
private:
/// This version is implemented with System V shared memory
/// segments.
ACE_SV_Shared_Memory shared_memory_;
};
#if defined (__ACE_INLINE__)
#include "ace/Shared_Memory_SV.i"
#endif /* __ACE_INLINE__ */
#include "ace/post.h"
#endif /* ACE_SHARED_MALLOC_SV_H */
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