Public Types |
typedef ATTRIBUTES | CACHING_ATTRIBUTES |
Public Methods |
| ACE_LRU_Caching_Strategy (void) |
ATTRIBUTES | attributes (void) |
| Accessor method for the timer attributes.
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double | purge_percent (void) |
void | purge_percent (double percentage) |
int | notify_bind (int result, const ATTRIBUTES &attr) |
| This method acts as a notification about the CONTAINERs bind method call.
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int | notify_find (int result, ATTRIBUTES &attr) |
| This method acts as a notification about the CONTAINERs find method call.
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int | notify_unbind (int result, const ATTRIBUTES &attr) |
| This method acts as a notification about the CONTAINERs unbind method call.
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int | notify_trybind (int result, ATTRIBUTES &attr) |
| This method acts as a notification about the CONTAINERs trybind method call.
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int | notify_rebind (int result, const ATTRIBUTES &attr) |
| This method acts as a notification about the CONTAINERs rebind method call.
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CACHING_UTILITY& | caching_utility (void) |
| Purge the cache.
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void | dump (void) const |
| Dumps the state of the object.
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Private Attributes |
ATTRIBUTES | timer_ |
| This element is the one which is the deciding factor for purging of an ITEM.
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double | purge_percent_ |
| The level about which the purging will happen automagically.
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CACHING_UTILITY | caching_utility_ |
| This is the helper class which will decide and expunge entries from the cache.
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This is a strategy which makes use of a virtual timer which is updated whenever an item is inserted or looked up in the container. When the need of purging entries arises, the items with the lowest timer values 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.