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/* -*- C++ -*- */
//=============================================================================
/**
* @file Active_Map_Manager.h
*
* @author Irfan Pyarali
*/
//=============================================================================
#ifndef ACE_ACTIVE_MAP_MANAGER_H
#define ACE_ACTIVE_MAP_MANAGER_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/Basic_Types.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class ACE_Active_Map_Manager_Key
*
* @brief Key used in the Active Object Map.
*
* This key keeps information of the index and the generation
* count of the slot it represents. Since the index information
* is part of the key, lookups are super fast and predictable,
*/
class ACE_Export ACE_Active_Map_Manager_Key
{
public:
/// Default constructor.
ACE_Active_Map_Manager_Key ();
/**
* Constructor given the @a slot_index and @a slot_generation number.
* This is useful once the user has somehow recovered the
* @a slot_index and @a slot_generation number from the client.
*/
ACE_Active_Map_Manager_Key (ACE_UINT32 slot_index,
ACE_UINT32 slot_generation);
/// Get the slot_index.
ACE_UINT32 slot_index () const;
/// Set the slot_index.
void slot_index (ACE_UINT32 i);
/// Get the slot_generation number.
ACE_UINT32 slot_generation () const;
/// Set the slot_generation number.
void slot_generation (ACE_UINT32 g);
/// Size required to store information about active key.
static size_t size ();
/// Recover state of active key from @a data. User must make sure
/// that @a data encoded using the encode() method.
void decode (const void *data);
/// Encode state of the active key into @a data. @a data must be as
/// big as the value returned from size().
void encode (void *data) const;
/// Compare keys.
bool operator== (const ACE_Active_Map_Manager_Key &rhs) const;
bool operator!= (const ACE_Active_Map_Manager_Key &rhs) const;
// = This really should be protected but because of template
// friends, they are not.
/// Increment the slot_generation number.
void increment_slot_generation_count ();
private:
/**
* @brief Data for the Active Object Map Key.
*
* This separate structure makes it easier to manage copying
* the index and the generation to and from the user buffer.
*
*/
struct key_data
{
/// Slot index in the active map.
ACE_UINT32 slot_index_;
/// Slot generation number of @c slot_index_ slot in the active map.
ACE_UINT32 slot_generation_;
};
/// Data for the Active Object Map Key.
key_data key_data_;
};
ACE_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
#include "ace/Active_Map_Manager.inl"
#endif /* __ACE_INLINE__ */
// Include the templates here.
#include "ace/Active_Map_Manager_T.h"
#include /**/ "ace/post.h"
#endif /* ACE_ACTIVE_MAP_MANAGER_H */
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