Panda3D
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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. More...
#include <pandadoc.hpp>
Public Member Functions | |
__init__ (str name, int max_size) | |
beginEpoch () | |
Marks the end of the previous epoch and the beginning of the next one. | |
considerEvict () | |
Evicts a sequence of objects if the queue is full. | |
int | countActiveSize () |
Returns the total size of the pages that were enqueued since the last call to begin_epoch(). | |
evictTo (int target_size) | |
Evicts a sequence of objects until the queue fits within the indicated target size, regardless of its normal max size. | |
int | getMaxSize () |
Returns the max size of all objects that are allowed to be active on the LRU. | |
int | getMaxUpdatesPerFrame () |
Returns the maximum number of pages the AdaptiveLru will update each frame. | |
int | getTotalSize () |
Returns the total size of all objects currently active on the LRU. | |
float | getWeight () |
Returns the weight value used to compute the exponential moving average. | |
output (Ostream out) | |
setMaxSize (int max_size) | |
Changes the max size of all objects that are allowed to be active on the LRU. | |
setMaxUpdatesPerFrame (int max_updates_per_frame) | |
Specifies the maximum number of pages the AdaptiveLru will update each frame. | |
setWeight (float weight) | |
bool | validate () |
Checks that the LRU is internally self-consistent. | |
write (Ostream out, int indent_level) | |
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__init__ (const Namable) | |
__init__ (str initial_name) | |
clearName () | |
Resets the Namable's name to empty. | |
str | getName () |
bool | hasName () |
Returns true if the Namable has a nonempty name set, false if the name is empty. | |
output (Ostream out) | |
Outputs the Namable. | |
setName (str name) | |
Additional Inherited Members | |
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static TypeHandle | getClassType () |
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const String | name |
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.
__init__ | ( | str | name, |
int | max_size ) |
beginEpoch | ( | ) |
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.
considerEvict | ( | ) |
Evicts a sequence of objects if the queue is full.
int countActiveSize | ( | ) |
Returns the total size of the pages that were enqueued since the last call to begin_epoch().
evictTo | ( | int | target_size | ) |
Evicts a sequence of objects until the queue fits within the indicated target size, regardless of its normal max size.
int getMaxSize | ( | ) |
Returns the max size of all objects that are allowed to be active on the LRU.
int getMaxUpdatesPerFrame | ( | ) |
Returns the maximum number of pages the AdaptiveLru will update each frame.
int getTotalSize | ( | ) |
Returns the total size of all objects currently active on the LRU.
float getWeight | ( | ) |
Returns the weight value used to compute the exponential moving average.
output | ( | Ostream | out | ) |
setMaxSize | ( | int | max_size | ) |
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 | ( | int | max_updates_per_frame | ) |
Specifies the maximum number of pages the AdaptiveLru will update each frame.
This is a performance optimization: keeping this number low limits the impact of the AdaptiveLru's adaptive algorithm.
setWeight | ( | float | weight | ) |
bool validate | ( | ) |
Checks that the LRU is internally self-consistent.
Returns true if successful, false if there is some problem.
write | ( | Ostream | out, |
int | indent_level ) |