AdaptiveLruPage
from panda3d.core import AdaptiveLruPage
- class AdaptiveLruPage
Bases:
DTOOL_SUPER_BASEOne atomic piece that may be managed by a AdaptiveLru chain. To use this class, inherit from it and override evict_lru().
This class multiply inherits from two classes which in turn both inherit from LinkedListNode. This is just a sneaky C++ trick to allow this class to inherit from LinkedListNode twice, so that pages can be stored on two different linked lists simultaneously. The AdaptiveLru class depends on this; it maintains its pages in two different lists, one grouped by priority, and one in order by next partial update needs.
Inheritance diagram
- __init__(*args, **kwargs)
- assign()
C++ Interface: assign(const AdaptiveLruPage self, const AdaptiveLruPage copy)
- dequeueLru()
C++ Interface: dequeue_lru(const AdaptiveLruPage self)
- /**
Removes the page from its AdaptiveLru.
*/
- dequeue_lru()
C++ Interface: dequeue_lru(const AdaptiveLruPage self)
- /**
Removes the page from its AdaptiveLru.
*/
- enqueueLru()
C++ Interface: enqueue_lru(const AdaptiveLruPage self, AdaptiveLru lru)
- /**
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.
*/
- enqueue_lru()
C++ Interface: enqueue_lru(const AdaptiveLruPage self, AdaptiveLru lru)
- /**
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()
C++ Interface: evict_lru(const AdaptiveLruPage self)
- /**
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).
*/
- evict_lru()
C++ Interface: evict_lru(const AdaptiveLruPage self)
- /**
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()
C++ Interface: get_lru(AdaptiveLruPage self)
- /**
Returns the LRU that manages this page, or NULL if it is not currently
managed by any LRU.
*/
- getLruSize()
C++ Interface: get_lru_size(AdaptiveLruPage self)
- /**
Returns the size of this page as reported to the LRU, presumably in bytes.
*/
- getNumFrames()
C++ Interface: get_num_frames(AdaptiveLruPage self)
// Not defined in SimpleLruPage.
- /**
Returns the number of frames since the page was first added to its LRU.
Returns 0 if it does not have an LRU.
*/
- getNumInactiveFrames()
C++ Interface: get_num_inactive_frames(AdaptiveLruPage self)
- /**
Returns the number of frames since the page was last accessed on its LRU.
Returns 0 if it does not have an LRU.
*/
- get_lru()
C++ Interface: get_lru(AdaptiveLruPage self)
- /**
Returns the LRU that manages this page, or NULL if it is not currently
managed by any LRU.
*/
- get_lru_size()
C++ Interface: get_lru_size(AdaptiveLruPage self)
- /**
Returns the size of this page as reported to the LRU, presumably in bytes.
*/
- get_num_frames()
C++ Interface: get_num_frames(AdaptiveLruPage self)
// Not defined in SimpleLruPage.
- /**
Returns the number of frames since the page was first added to its LRU.
Returns 0 if it does not have an LRU.
*/
- get_num_inactive_frames()
C++ Interface: get_num_inactive_frames(AdaptiveLruPage self)
- /**
Returns the number of frames since the page was last accessed on its LRU.
Returns 0 if it does not have an LRU.
*/
- markUsedLru()
C++ Interface: mark_used_lru(AdaptiveLruPage self) mark_used_lru(const AdaptiveLruPage self, AdaptiveLru lru)
- /**
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.
*/
- /**
To be called when the page is used; this will move it to the tail of the
specified AdaptiveLru queue.
*/
- mark_used_lru()
C++ Interface: mark_used_lru(AdaptiveLruPage self) mark_used_lru(const AdaptiveLruPage self, AdaptiveLru lru)
- /**
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.
*/
- /**
To be called when the page is used; this will move it to the tail of the
specified AdaptiveLru queue.
*/
- setLruSize()
C++ Interface: set_lru_size(const AdaptiveLruPage self, int lru_size)
- /**
Specifies the size of this page, presumably in bytes, although any unit is
possible.
*/