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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// ace
//
// = FILENAME
// Based_Pointer_Repository.h
//
// = AUTHOR
// Dietrich Quehl <Dietrich.Quehl@med.siemens.de> and
// Douglas C. Schmidt <schmidt@.cs.wustl.edu>
//
// ============================================================================
#ifndef ACE_BASED_POINTER_REPOSITORY_H
#define ACE_BASED_POINTER_REPOSITORY_H
#include "ace/OS.h" // Need ACE_Export
// Forward decl., using the "Cheshire Cat" technique.
class ACE_Based_Pointer_Repository_Rep;
class ACE_Export ACE_Based_Pointer_Repository
{
// = TITLE
// Maps pointers to the base address of the region to which each
// pointer belongs.
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.
int find (void *addr,
void *&base_addr);
// 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 bind (void *addr,
size_t size);
// Bind a new entry to the repository or update the size of an
// existing entry. Returns 0 on success and -1 on failure.
int unbind (void *addr);
// Unbind from the repository the <base_addr> that <addr> is
// contained within.
private:
ACE_Based_Pointer_Repository_Rep *rep_;
// Use the "Cheshire-Cat" technique to hide the implementation in
// order to avoid circular #include dependencies.
};
#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;
#endif /* ACE_BASED_POINTER_REPOSITORY_H */
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