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// -*- C++ -*-
//=============================================================================
/**
* @file Based_Pointer_Repository.h
*
* $Id$
*
* @author Dietrich Quehl <Dietrich.Quehl@med.siemens.de>
* @author Douglas C. Schmidt <schmidt@.cs.wustl.edu>
*/
//=============================================================================
#ifndef ACE_BASED_POINTER_REPOSITORY_H
#define ACE_BASED_POINTER_REPOSITORY_H
#include /**/ "ace/pre.h"
#include "ace/ACE_export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/os_include/os_stddef.h"
#include "ace/Synch_Traits.h"
// Forward decl., using the "Cheshire Cat" technique.
class ACE_Based_Pointer_Repository_Rep;
/**
* @class ACE_Based_Pointer_Repository
*
* @brief Maps pointers to the base address of the region to which each
* pointer belongs.
*/
class ACE_Export ACE_Based_Pointer_Repository
{
public:
// = Use <ACE_Null_Mutex> to allow locking while iterating.
// = Initialization and termination methods.
ACE_Based_Pointer_Repository (void);
~ACE_Based_Pointer_Repository (void);
// = Search structure methods.
/**
* Return the appropriate <base_addr> region that contains <addr>.
* Returns 1 on success and 0 if the <addr> isn't contained in any
* <base_addr> region.
*/
int find (void *addr,
void *&base_addr);
/// Bind a new entry to the repository or update the size of an
/// existing entry. Returns 0 on success and -1 on failure.
int bind (void *addr,
size_t size);
/// Unbind from the repository the <base_addr> that <addr> is
/// contained within.
int unbind (void *addr);
private:
/// Use the "Cheshire-Cat" technique to hide the implementation in
/// order to avoid circular #include dependencies.
ACE_Based_Pointer_Repository_Rep *rep_;
};
#include "ace/Singleton.h"
/// Provide a Singleton access point to the based pointer repository.
typedef ACE_Singleton<ACE_Based_Pointer_Repository, ACE_SYNCH_RW_MUTEX>
ACE_BASED_POINTER_REPOSITORY;
#include /**/ "ace/post.h"
#endif /* ACE_BASED_POINTER_REPOSITORY_H */
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