Panda3D
|
An implementation of a very simple LRU algorithm. More...
#include "simpleLru.h"
Public Member Functions | |
SimpleLru (const string &name, size_t max_size) | |
void | begin_epoch () |
Marks the end of the previous epoch and the beginning of the next one. | |
void | consider_evict () |
Evicts a sequence of objects if the queue is full. | |
size_t | count_active_size () const |
Returns the total size of the pages that were enqueued since the last call to begin_epoch(). | |
void | evict_to (size_t target_size) |
Evicts a sequence of objects until the queue fits within the indicated target size, regardless of its normal max size. | |
size_t | get_max_size () const |
Returns the max size of all objects that are allowed to be active on the LRU. | |
size_t | get_total_size () const |
Returns the total size of all objects currently active on the LRU. | |
void | output (ostream &out) const |
Outputs the Namable. | |
void | set_max_size (size_t max_size) |
Changes the max size of all objects that are allowed to be active on the LRU. | |
bool | validate () |
Checks that the LRU is internally self-consistent. | |
void | write (ostream &out, int indent_level) const |
Static Public Attributes | |
static LightMutex & | _global_lock = *new LightMutex |
Friends | |
class | SimpleLruPage |
An implementation of a very simple LRU algorithm.
Also see AdaptiveLru.
Definition at line 31 of file simpleLru.h.
void SimpleLru::begin_epoch | ( | ) | [inline] |
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.
Definition at line 94 of file simpleLru.I.
References consider_evict(), and SimpleLruPage::enqueue_lru().
Referenced by GeomVertexArrayData::lru_epoch().
void SimpleLru::consider_evict | ( | ) | [inline] |
Evicts a sequence of objects if the queue is full.
Definition at line 63 of file simpleLru.I.
Referenced by begin_epoch().
size_t SimpleLru::count_active_size | ( | ) | const |
Returns the total size of the pages that were enqueued since the last call to begin_epoch().
Definition at line 106 of file simpleLru.cxx.
void SimpleLru::evict_to | ( | size_t | target_size | ) | [inline] |
Evicts a sequence of objects until the queue fits within the indicated target size, regardless of its normal max size.
Definition at line 78 of file simpleLru.I.
size_t SimpleLru::get_max_size | ( | ) | const [inline] |
Returns the max size of all objects that are allowed to be active on the LRU.
Definition at line 35 of file simpleLru.I.
Referenced by VertexDataPage::evict_lru().
size_t SimpleLru::get_total_size | ( | ) | const [inline] |
Returns the total size of all objects currently active on the LRU.
Definition at line 23 of file simpleLru.I.
Referenced by GraphicsEngine::render_frame().
void SimpleLru::output | ( | ostream & | out | ) | const |
Outputs the Namable.
This function simply writes the name to the output stream; most Namable derivatives will probably redefine this.
Reimplemented from Namable.
Definition at line 125 of file simpleLru.cxx.
void SimpleLru::set_max_size | ( | size_t | max_size | ) | [inline] |
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.
Definition at line 49 of file simpleLru.I.
bool SimpleLru::validate | ( | ) | [inline] |
Checks that the LRU is internally self-consistent.
Returns true if successful, false if there is some problem.
Definition at line 107 of file simpleLru.I.