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101 lines
2.7 KiB
C++
101 lines
2.7 KiB
C++
// -*- C++ -*-
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//=============================================================================
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/**
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* @file Shared_Memory_SV.h
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*
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* $Id: Shared_Memory_SV.h 80826 2008-03-04 14:51:23Z wotte $
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*
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* @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
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*/
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//=============================================================================
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#ifndef ACE_SHARED_MALLOC_SV_H
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#define ACE_SHARED_MALLOC_SV_H
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#include /**/ "ace/pre.h"
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#include "ace/Shared_Memory.h"
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#if !defined (ACE_LACKS_PRAGMA_ONCE)
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# pragma once
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#endif /* ACE_LACKS_PRAGMA_ONCE */
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#include "ace/SV_Shared_Memory.h"
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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/**
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* @class ACE_Shared_Memory_SV
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*
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* @brief Shared memory wrapper based on System V shared memory.
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*
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* This class provides a very simple-minded shared memory manager. We
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* strongly recommend that you do NOT use this class. Instead, please
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* use @c ACE_Malloc, which has much more powerful capabilities.
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*/
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class ACE_Export ACE_Shared_Memory_SV : public ACE_Shared_Memory
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{
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public:
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enum
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{
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ACE_CREATE = IPC_CREAT,
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ACE_OPEN = 0
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};
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// = Initialization and termination methods.
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ACE_Shared_Memory_SV (void);
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ACE_Shared_Memory_SV (key_t id,
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size_t length,
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int create = ACE_Shared_Memory_SV::ACE_OPEN,
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int perms = ACE_DEFAULT_FILE_PERMS,
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void *addr = 0,
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int flags = 0);
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int open (key_t id,
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size_t length,
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int create = ACE_Shared_Memory_SV::ACE_OPEN,
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int perms = ACE_DEFAULT_FILE_PERMS,
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void *addr = 0,
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int flags = 0);
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/// Close down the shared memory segment.
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virtual int close (void);
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/// Remove the underlying shared memory segment.
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virtual int remove (void);
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// = Allocation and deallocation methods.
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/// Create a new chuck of memory containing @a size bytes.
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virtual void *malloc (size_t = 0);
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/// Free a chuck of memory allocated by <ACE_Shared_Memory_SV::malloc>.
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virtual int free (void *p);
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/// Return the size of the shared memory segment.
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virtual size_t get_segment_size (void) const;
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/// Return the ID of the shared memory segment (i.e., a System V
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/// shared memory internal id).
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virtual ACE_HANDLE get_id (void) const;
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/// Dump the state of an object.
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void dump (void) const;
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/// Declare the dynamic allocation hooks.
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ACE_ALLOC_HOOK_DECLARE;
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private:
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/// This version is implemented with System V shared memory
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/// segments.
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ACE_SV_Shared_Memory shared_memory_;
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};
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ACE_END_VERSIONED_NAMESPACE_DECL
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#if defined (__ACE_INLINE__)
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#include "ace/Shared_Memory_SV.inl"
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#endif /* __ACE_INLINE__ */
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#include /**/ "ace/post.h"
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#endif /* ACE_SHARED_MALLOC_SV_H */
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