ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY > Class Template Reference

The First In First Out strategy is implemented wherein each item is ordered. More...

#include <Caching_Strategies_T.h>

Collaboration diagram for ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >:

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Public Types

typedef ATTRIBUTES CACHING_ATTRIBUTES

Public Member Functions

 ACE_FIFO_Caching_Strategy (void)
ATTRIBUTES attributes (void)
 Accessor method.
double purge_percent (void)
 Get the percentage of entries to purge.
void purge_percent (double percentage)
 Set the percentage of entries to purge.
int notify_bind (int result, const ATTRIBUTES &attr)
 Notification for an item getting bound into the cache.
int notify_find (int result, ATTRIBUTES &attr)
int notify_unbind (int result, const ATTRIBUTES &attr)
int notify_trybind (int result, ATTRIBUTES &attr)
int notify_rebind (int result, const ATTRIBUTES &attr)
 Notification for an item getting bound again into the cache.
CACHING_UTILITY & caching_utility (void)
 Purge the cache.
void dump (void) const
 Dumps the state of the object.

Private Attributes

ATTRIBUTES order_
double purge_percent_
 The level about which the purging will happen automagically.
CACHING_UTILITY caching_utility_

Detailed Description

template<class ATTRIBUTES, class CACHING_UTILITY>
class ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >

The First In First Out strategy is implemented wherein each item is ordered.

The order tag of each item is used to decide the item to be removed from the cache. The items with least order are removed. Explanation of the template parameter list: CONTAINER is any map with entries of type <KEY, VALUE>. The ATTRIBUTES are the deciding factor for purging of entries and should logically be included with the VALUE. Some ways of doing this are: As being a member of the VALUE or VALUE being ACE_Pair<x, ATTRIBUTES>. The CACHING_UTILITY is the class which can be plugged in and which decides the entries to purge.


Member Typedef Documentation

template<class ATTRIBUTES, class CACHING_UTILITY>
typedef ATTRIBUTES ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::CACHING_ATTRIBUTES
 


Constructor & Destructor Documentation

template<class ATTRIBUTES, class CACHING_UTILITY>
ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::ACE_FIFO_Caching_Strategy void   ) 
 

The <container> is the map in which the entries reside. The timer attribute is initialed to zero in this constructor. And the <purge_percent> field denotes the percentage of the entries in the cache which can be purged automagically and by default is set to 10%.


Member Function Documentation

template<class ATTRIBUTES, class CACHING_UTILITY>
ACE_INLINE ATTRIBUTES ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::attributes void   ) 
 

Accessor method.

template<class ATTRIBUTES, class CACHING_UTILITY>
ACE_INLINE CACHING_UTILITY & ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::caching_utility void   ) 
 

Purge the cache.

template<class ATTRIBUTES, class CACHING_UTILITY>
ACE_INLINE void ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::dump void   )  const
 

Dumps the state of the object.

template<class ATTRIBUTES, class CACHING_UTILITY>
ACE_INLINE int ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::notify_bind int  result,
const ATTRIBUTES &  attr
 

Notification for an item getting bound into the cache.

template<class ATTRIBUTES, class CACHING_UTILITY>
ACE_INLINE int ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::notify_find int  result,
ATTRIBUTES &  attr
 

This method acts as a notification about the CONTAINERs find method call

template<class ATTRIBUTES, class CACHING_UTILITY>
ACE_INLINE int ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::notify_rebind int  result,
const ATTRIBUTES &  attr
 

Notification for an item getting bound again into the cache.

template<class ATTRIBUTES, class CACHING_UTILITY>
ACE_INLINE int ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::notify_trybind int  result,
ATTRIBUTES &  attr
 

This method acts as a notification about the CONTAINERs trybind method call

template<class ATTRIBUTES, class CACHING_UTILITY>
ACE_INLINE int ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::notify_unbind int  result,
const ATTRIBUTES &  attr
 

This method acts as a notification about the CONTAINERs unbind method call

template<class ATTRIBUTES, class CACHING_UTILITY>
ACE_INLINE void ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::purge_percent double  percentage  ) 
 

Set the percentage of entries to purge.

template<class ATTRIBUTES, class CACHING_UTILITY>
ACE_INLINE double ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::purge_percent void   ) 
 

Get the percentage of entries to purge.


Member Data Documentation

template<class ATTRIBUTES, class CACHING_UTILITY>
CACHING_UTILITY ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::caching_utility_ [private]
 

This is the helper class which will decide and expunge entries from the cache.

template<class ATTRIBUTES, class CACHING_UTILITY>
ATTRIBUTES ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::order_ [private]
 

The order is the deciding factor for the item to be removed from the cache.

template<class ATTRIBUTES, class CACHING_UTILITY>
double ACE_FIFO_Caching_Strategy< ATTRIBUTES, CACHING_UTILITY >::purge_percent_ [private]
 

The level about which the purging will happen automagically.


The documentation for this class was generated from the following files:
Generated on Wed Nov 23 15:48:38 2005 for ACE by  doxygen 1.4.5