AdaptiveLruPage

Inheritance:

Methods of AdaptiveLruPage:

AdaptiveLruPage
AdaptiveLruPage::AdaptiveLruPage(unsigned int lru_size);

Description:

dequeueLru
void AdaptiveLruPage::dequeue_lru(void);

Description: Removes the page from its AdaptiveLru.

enqueueLru
void AdaptiveLruPage::enqueue_lru(AdaptiveLru *lru);

Description: Adds the page to the LRU for the first time, or marks it recently-accessed if it has already been added.
If lru is NULL, it means to remove this page from its LRU.

evictLru
virtual void AdaptiveLruPage::evict_lru(void);

Description: Evicts the page from the LRU. Called internally when the LRU determines that it is full. May also be called externally when necessary to explicitly evict the page.
It is legal for this method to either evict the page as requested, do nothing (in which case the eviction will be requested again at the next epoch), or requeue itself on the tail of the queue (in which case the eviction will be requested again much later).

getLru
AdaptiveLru *AdaptiveLruPage::get_lru(void) const;

Description: Returns the LRU that manages this page, or NULL if it is not currently managed by any LRU.

getLruSize
unsigned int AdaptiveLruPage::get_lru_size(void) const;

Description: Returns the size of this page as reported to the LRU, presumably in bytes.

getNumFrames
unsigned int AdaptiveLruPage::get_num_frames(void) const;

Not defined in SimpleLruPage.
Description: Returns the number of frames since the page was first added to its LRU. Returns 0 if it does not have an LRU.

getNumInactiveFrames
unsigned int AdaptiveLruPage::get_num_inactive_frames(void) const;

Not defined in SimpleLruPage.
Description: Returns the number of frames since the page was last accessed on its LRU. Returns 0 if it does not have an LRU.

markUsedLru
void AdaptiveLruPage::mark_used_lru(void) const;

Description: To be called when the page is used; this will move it to the tail of the AdaptiveLru queue it is already on.
This method is const because it's not technically modifying the contents of the page itself.
Description: To be called when the page is used; this will move it to the tail of the specified AdaptiveLru queue.

operator =
void AdaptiveLruPage::operator =(AdaptiveLruPage const &copy);

Description:

output
virtual void AdaptiveLruPage::output(ostream &out) const;

Description:

setLruSize
void AdaptiveLruPage::set_lru_size(unsigned int lru_size);

Description: Specifies the size of this page, presumably in bytes, although any unit is possible.

write
virtual void AdaptiveLruPage::write(ostream &out, int indent_level) const;

Description: