from panda3d.core import AdaptiveLru
A basic LRU-type algorithm, except that it is adaptive and attempts to avoid evicting pages that have been used more frequently (even if less recently) than other pages.
The interface is designed to be identical to that for
SimpleLru, so that it may be used as a drop-in replacement.
beginEpoch() → None¶
Marks the end of the previous epoch and the beginning of the next one. This will evict any objects that are pending eviction, and also update any internal bookkeeping.
countActiveSize() → int¶
Returns the total size of the pages that were enqueued since the last call to
evictTo(target_size: int) → None¶
Evicts a sequence of objects until the queue fits within the indicated target size, regardless of its normal max size.
getMaxUpdatesPerFrame() → int¶
Returns the maximum number of pages the
AdaptiveLruwill update each frame.
setMaxSize(max_size: int) → None¶
Changes the max size of all objects that are allowed to be active on the LRU.
If the size is (size_t)-1, there is no limit.
setMaxUpdatesPerFrame(max_updates_per_frame: int) → None¶
Specifies the maximum number of pages the
AdaptiveLruwill update each frame. This is a performance optimization: keeping this number low limits the impact of the AdaptiveLru’s adaptive algorithm.
setWeight(weight: float) → None¶
validate() → bool¶
Checks that the LRU is internally self-consistent. Returns true if successful, false if there is some problem.