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/* -*- C++ -*- */
//=============================================================================
/**
* @file Active_Map_Manager.h
*
* $Id$
*
* @author Irfan Pyarali
*/
//=============================================================================
#ifndef ACE_ACTIVE_MAP_MANAGER_H
#define ACE_ACTIVE_MAP_MANAGER_H
#include "ace/pre.h"
#include "ace/OS_String.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
/**
* @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 (void);
/**
* Constructor given the <slot_index> and <slot_generation> number.
* This is useful once the user has somehow recovered the
* <slot_index> and <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 (void) const;
/// Set the <slot_index>.
void slot_index (ACE_UINT32 i);
/// Get the <slot_generation> number.
ACE_UINT32 slot_generation (void) const;
/// Set the <slot_generation> number.
void slot_generation (ACE_UINT32 g);
/// Size required to store information about active key.
static size_t size (void);
/// Recover state of active key from <data>. User must make sure
/// that <data> encoded using the <encode> method.
void decode (const void *data);
/// Encode state of the active key into <data>. <data> must be as
/// big as the value returned from <size>.
void encode (void *data) const;
/// Compare keys.
int operator== (const ACE_Active_Map_Manager_Key &rhs) const;
int 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 (void);
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 <slot_index_> slot in the active map.
ACE_UINT32 slot_generation_;
};
/// Data for the Active Object Map Key.
key_data key_data_;
};
#if defined (__ACE_INLINE__)
#include "ace/Active_Map_Manager.i"
#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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