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ACE_Cache_Map_Manager<> Class Template Reference

Defines a abstraction that will purge entries from a map. More...

#include <Cache_Map_Manager_T.h>

List of all members.

Public Types
typedef KEY	key_type
typedef VALUE	mapped_type
typedef MAP	map_type
typedef CACHING_STRATEGY	caching_strategy_type
typedef ITERATOR_IMPL	ITERATOR_IMPLEMENTATION
typedef REVERSE_ITERATOR_IMPL	REVERSE_ITERATOR_IMPLEMENTATION
typedef ACE_Cache_Map_Iterator< KEY, VALUE, ITERATOR_IMPLEMENTATION, CACHING_STRATEGY, ATTRIBUTES >	ITERATOR
typedef ACE_Cache_Map_Reverse_Iterator< KEY, VALUE, REVERSE_ITERATOR_IMPLEMENTATION, CACHING_STRATEGY, ATTRIBUTES >	REVERSE_ITERATOR
typedef ITERATOR	iterator
typedef REVERSE_ITERATOR	reverse_iterator
typedef ACE_Pair< VALUE, ATTRIBUTES >	CACHE_VALUE
Public Methods
	ACE_Cache_Map_Manager (CACHING_STRATEGY &caching_strategy, size_t size=ACE_DEFAULT_MAP_SIZE, ACE_Allocator *alloc=0)
virtual	~ACE_Cache_Map_Manager (void)
int	open (size_t length=ACE_DEFAULT_MAP_SIZE, ACE_Allocator *alloc=0)
	Initialize a cache with size <length>.
int	close (void)
	Close down a cache and release dynamically allocated resources.
int	bind (const KEY &key, const VALUE &value)
int	find (const KEY &key, VALUE &value)
int	find (const KEY &key)
int	rebind (const KEY &key, const VALUE &value)
int	rebind (const KEY &key, const VALUE &value, VALUE &old_value)
int	rebind (const KEY &key, const VALUE &value, KEY &old_key, VALUE &old_value)
int	trybind (const KEY &key, VALUE &value)
int	unbind (const KEY &key)
	Remove <key> from the cache.
int	unbind (const KEY &key, VALUE &value)
int	purge (void)
	Remove entries from the cache depending upon the strategy.
size_t	current_size (void) const
	Return the current size of the cache.
size_t	total_size (void) const
	Return the total size of the cache.
void	dump (void) const
	Dumps the state of the object.
ITERATOR	begin (void)
	Return forward iterator.
ITERATOR	end (void)
REVERSE_ITERATOR	rbegin (void)
	Return reverse iterator.
REVERSE_ITERATOR	rend (void)
MAP &	map (void)
	The map managed by the Cache_Map_Manager.
CACHING_STRATEGY &	caching_strategy (void)
	The caching strategy used on the cache.
Protected Attributes
MAP	map_
	The underlying map which needs to be cached.
CACHING_STRATEGY &	caching_strategy_
	The strategy to be followed for caching entries in the map.
Private Methods
void	operator= (const ACMM< KEY, VALUE, MAP, ITERATOR_IMPL, REVERSE_ITERATOR_IMPL, CACHING_STRATEGY, ATTRIBUTES > &)
	ACMM (const ACMM< KEY, VALUE, MAP, ITERATOR_IMPL, REVERSE_ITERATOR_IMPL, CACHING_STRATEGY, ATTRIBUTES > &)
Friends
class	ACE_Cache_Map_Iterator< KEY, VALUE, ITERATOR_IMPLEMENTATION, CACHING_STRATEGY, ATTRIBUTES >
class	ACE_Cache_Map_Reverse_Iterator< KEY, VALUE, REVERSE_ITERATOR_IMPLEMENTATION, CACHING_STRATEGY, ATTRIBUTES >

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Detailed Description

template<ACE_T1>
class ACE_Cache_Map_Manager<>

Defines a abstraction that will purge entries from a map.

The <ACE_Cache_Map_Manager> will manage the map it contains and provide purging on demand from the map. The strategy for caching is decided by the user and provided to the Cache Manager. The Cache Manager acts as a agent and communicates between the Map and the Strategy for purging entries from the map. No locking mechanism provided since locking at this level isn't efficient. Locking has to be provided by the application.

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Member Typedef Documentation

template<ACE_T1 > typedef ACE_Pair<VALUE, ATTRIBUTES> ACE_Cache_Map_Manager<>::CACHE_VALUE

The actual value mapped to the key in the map. The <attributes> are used by the strategy and is transparent to the user of this class.

template<ACE_T1 > typedef CACHING_STRATEGY ACE_Cache_Map_Manager<>::caching_strategy_type

template<ACE_T1 > typedef ITERATOR ACE_Cache_Map_Manager<>::iterator

template<ACE_T1 > typedef ACE_Cache_Map_Iterator<KEY, VALUE, ITERATOR_IMPLEMENTATION, CACHING_STRATEGY, ATTRIBUTES> ACE_Cache_Map_Manager<>::ITERATOR

template<ACE_T1 > typedef ITERATOR_IMPL ACE_Cache_Map_Manager<>::ITERATOR_IMPLEMENTATION

template<ACE_T1 > typedef KEY ACE_Cache_Map_Manager<>::key_type

template<ACE_T1 > typedef MAP ACE_Cache_Map_Manager<>::map_type

template<ACE_T1 > typedef VALUE ACE_Cache_Map_Manager<>::mapped_type

template<ACE_T1 > typedef REVERSE_ITERATOR ACE_Cache_Map_Manager<>::reverse_iterator

template<ACE_T1 > typedef ACE_Cache_Map_Reverse_Iterator<KEY, VALUE, REVERSE_ITERATOR_IMPLEMENTATION, CACHING_STRATEGY, ATTRIBUTES> ACE_Cache_Map_Manager<>::REVERSE_ITERATOR

template<ACE_T1 > typedef REVERSE_ITERATOR_IMPL ACE_Cache_Map_Manager<>::REVERSE_ITERATOR_IMPLEMENTATION

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Constructor & Destructor Documentation

template<ACE_T1 > ACE_Cache_Map_Manager<>::ACE_Cache_Map_Manager (  CACHING_STRATEGY &    caching_strategy, size_t    size = ACE_DEFAULT_MAP_SIZE, ACE_Allocator *    alloc = 0 )

Initialize a <Cache_Map_Manager> with <caching_strategy> and <size> entries.

template<ACE_T1 > ACE_Cache_Map_Manager<>::~ACE_Cache_Map_Manager (  void    )  [virtual]

Close down a <Cache_Map_Manager> and release dynamically allocated resources.

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Member Function Documentation

template<ACE_T1 > ACE_Cache_Map_Manager<>::ACMM (  const ACMM< KEY, VALUE, MAP, ITERATOR_IMPL, REVERSE_ITERATOR_IMPL, CACHING_STRATEGY, ATTRIBUTES > &    )  [private]

template<ACE_T1 > ACE_INLINE ACE_Cache_Map_Iterator< KEY, VALUE, ITERATOR_IMPL, CACHING_STRATEGY, ATTRIBUTES > ACE_Cache_Map_Manager<>::begin (  void    )

Return forward iterator.

template<ACE_T1 > int ACE_Cache_Map_Manager<>::bind (  const KEY &    key, const VALUE &    value )

Associate <key> with <value>. If <key> is already in the MAP then the ENTRY is not changed. Returns 0 if a new entry is bound successfully, returns 1 if an attempt is made to bind an existing entry, and returns -1 if failures occur.

template<ACE_T1 > ACE_INLINE CACHING_STRATEGY & ACE_Cache_Map_Manager<>::caching_strategy (  void    )

The caching strategy used on the cache.

template<ACE_T1 > int ACE_Cache_Map_Manager<>::close (  void    )

Close down a cache and release dynamically allocated resources.

template<ACE_T1 > ACE_INLINE size_t ACE_Cache_Map_Manager<>::current_size (  void    )  const

Return the current size of the cache.

template<ACE_T1 > void ACE_Cache_Map_Manager<>::dump (  void    )  const

Dumps the state of the object.

template<ACE_T1 > ACE_INLINE ACE_Cache_Map_Iterator< KEY, VALUE, ITERATOR_IMPL, CACHING_STRATEGY, ATTRIBUTES > ACE_Cache_Map_Manager<>::end (  void    )

template<ACE_T1 > int ACE_Cache_Map_Manager<>::find (  const KEY &    key )

Lookup entry<key,value> in the cache. If it is not found, returns -1. If the <key> is located in the MAP object, the CACHING_STRATEGY is notified of it via notify_find (int result, ATTRIBUTES &attribute). If notify_find also returns 0 (success), then this function returns 0 (success).

template<ACE_T1 > int ACE_Cache_Map_Manager<>::find (  const KEY &    key, VALUE &    value )

Lookup entry<key,value> in the cache. If it is not found, returns -1. If the <key> is located in the MAP object, the CACHING_STRATEGY is notified of it via notify_find (int result, ATTRIBUTES &attribute). If notify_find also returns 0 (success), then this function returns 0 (success) and sets the cached value in <value>.

template<ACE_T1 > ACE_INLINE MAP & ACE_Cache_Map_Manager<>::map (  void    )

The map managed by the Cache_Map_Manager.

template<ACE_T1 > int ACE_Cache_Map_Manager<>::open (  size_t    length = ACE_DEFAULT_MAP_SIZE, ACE_Allocator *    alloc = 0 )

Initialize a cache with size <length>.

template<ACE_T1 > void ACE_Cache_Map_Manager<>::operator= (  const ACMM< KEY, VALUE, MAP, ITERATOR_IMPL, REVERSE_ITERATOR_IMPL, CACHING_STRATEGY, ATTRIBUTES > &    )  [private]

template<ACE_T1 > ACE_INLINE int ACE_Cache_Map_Manager<>::purge (  void    )

Remove entries from the cache depending upon the strategy.

template<ACE_T1 > ACE_INLINE ACE_Cache_Map_Reverse_Iterator< KEY, VALUE, REVERSE_ITERATOR_IMPL, CACHING_STRATEGY, ATTRIBUTES > ACE_Cache_Map_Manager<>::rbegin (  void    )

Return reverse iterator.

template<ACE_T1 > int ACE_Cache_Map_Manager<>::rebind (  const KEY &    key, const VALUE &    value, KEY &    old_key, VALUE &    old_value )

Reassociate <key> with <value>, storing the old key and value into the "out" parameters <old_key> and <old_value>. The function fails if <key> is not in the cache for caches that do not allow user specified keys. However, for caches that allow user specified keys, if the key is not in the cache, a new <key>/<value> association is created.

template<ACE_T1 > int ACE_Cache_Map_Manager<>::rebind (  const KEY &    key, const VALUE &    value, VALUE &    old_value )

Reassociate <key> with <value>, storing the old value into the "out" parameter <old_value>. The function fails if <key> is not in the cache for caches that do not allow user specified keys. However, for caches that allow user specified keys, if the key is not in the cache, a new <key>/<value> association is created.

template<ACE_T1 > int ACE_Cache_Map_Manager<>::rebind (  const KEY &    key, const VALUE &    value )

Reassociate the <key> with <value>. If the <key> already exists in the cache then returns 1, on a new bind returns 0 and returns -1 in case of any failures.

template<ACE_T1 > ACE_INLINE ACE_Cache_Map_Reverse_Iterator< KEY, VALUE, REVERSE_ITERATOR_IMPL, CACHING_STRATEGY, ATTRIBUTES > ACE_Cache_Map_Manager<>::rend (  void    )

template<ACE_T1 > ACE_INLINE size_t ACE_Cache_Map_Manager<>::total_size (  void    )  const

Return the total size of the cache.

template<ACE_T1 > int ACE_Cache_Map_Manager<>::trybind (  const KEY &    key, VALUE &    value )

Associate <key> with <value> if and only if <key> is not in the cache. If <key> is already in the cache, then the <value> parameter is overwritten with the existing value in the cache. Returns 0 if a new <key>/<value> association is created. Returns 1 if an attempt is made to bind an existing entry. This function fails for maps that do not allow user specified keys.

template<ACE_T1 > int ACE_Cache_Map_Manager<>::unbind (  const KEY &    key, VALUE &    value )

Remove <key> from the cache, and return the <value> associated with <key>.

template<ACE_T1 > int ACE_Cache_Map_Manager<>::unbind (  const KEY &    key )

Remove <key> from the cache.

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Friends And Related Function Documentation

template<ACE_T1 > friend class ACE_Cache_Map_Iterator< KEY, VALUE, ITERATOR_IMPLEMENTATION, CACHING_STRATEGY, ATTRIBUTES > [friend]

template<ACE_T1 > friend class ACE_Cache_Map_Reverse_Iterator< KEY, VALUE, REVERSE_ITERATOR_IMPLEMENTATION, CACHING_STRATEGY, ATTRIBUTES > [friend]

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Member Data Documentation

template<ACE_T1 > CACHING_STRATEGY& ACE_Cache_Map_Manager<>::caching_strategy_ [protected]

The strategy to be followed for caching entries in the map.

template<ACE_T1 > MAP ACE_Cache_Map_Manager<>::map_ [protected]

The underlying map which needs to be cached.

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The documentation for this class was generated from the following files:

• /export2/deucetmp/bala/release_try/ACE_wrappers/ace/Cache_Map_Manager_T.h
• /export2/deucetmp/bala/release_try/ACE_wrappers/ace/Cache_Map_Manager_T.cpp
• /export2/deucetmp/bala/release_try/ACE_wrappers/ace/Cache_Map_Manager_T.i

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