GeomCacheManager Class Reference

This is used to keep track of, and limit the size of, the cache of munged vertices, which would otherwise be distributed through all of the GeomVertexData objects in the system. More...

#include "geomCacheManager.h"

Public Member Functions
void	evict_old_entries ()
	Trims the cache size down to get_max_size() by evicting old cache entries as needed. More...
void	evict_old_entries (int max_size, bool keep_current)
	Trims the cache size down to the specified size by evicting old cache entries as needed. More...
void	flush ()
	Immediately empties all elements in the cache. More...
int	get_max_size () const
	Returns the maximum number of entries in the cache for storing pre- processed data for rendering vertices. More...
int	get_total_size () const
	Returns the number of entries currently in the cache. More...
void	set_max_size (int max_size) const
	Specifies the maximum number of entries in the cache for storing pre- processed data for rendering vertices. More...

Static Public Member Functions
static void	flush_level ()
	Flushes the PStatCollectors used during traversal. More...
static GeomCacheManager *	get_global_ptr ()
	Returns the global cache manager pointer. More...

Static Public Attributes
static PStatCollector	_geom_cache_active_pcollector
static PStatCollector	_geom_cache_erase_pcollector
static PStatCollector	_geom_cache_evict_pcollector
static PStatCollector	_geom_cache_record_pcollector
static PStatCollector	_geom_cache_size_pcollector

Friends
class	GeomCacheEntry

Detailed Description

This is used to keep track of, and limit the size of, the cache of munged vertices, which would otherwise be distributed through all of the GeomVertexData objects in the system.

The actual data in the cache is not stored here, but rather it is distributed among the various GeomVertexData source objects. This allows the cache data to propagate through the multiprocess pipeline.

This structure actually caches any of a number of different types of pointers, and mixes them all up in the same LRU cache list. Some of them (such as GeomMunger) are reference-counted here in the cache; most are not.

Definition at line 37 of file geomCacheManager.h.

Member Function Documentation

evict_old_entries() [1/2]

void GeomCacheManager::evict_old_entries ( )

inline

Trims the cache size down to get_max_size() by evicting old cache entries as needed.

It is assumed that you already hold the lock before calling this method.

Definition at line 53 of file geomCacheManager.I.

References get_max_size().

Referenced by flush().

evict_old_entries() [2/2]

void GeomCacheManager::evict_old_entries	(	int	max_size,
		bool	keep_current
	)

Trims the cache size down to the specified size by evicting old cache entries as needed.

It is assumed that you already hold the lock before calling this method.

Definition at line 82 of file geomCacheManager.cxx.

References ClockObject::get_frame_count, and ClockObject::get_global_clock().

flush()

void GeomCacheManager::flush

(

void

)

Immediately empties all elements in the cache.

Definition at line 57 of file geomCacheManager.cxx.

References evict_old_entries().

flush_level()

void GeomCacheManager::flush_level ( )

inlinestatic

Flushes the PStatCollectors used during traversal.

Definition at line 61 of file geomCacheManager.I.

get_global_ptr()

GeomCacheManager * GeomCacheManager::get_global_ptr ( )

static

Returns the global cache manager pointer.

Definition at line 69 of file geomCacheManager.cxx.

Referenced by GeomCacheEntry::refresh().

get_max_size()

int GeomCacheManager::get_max_size ( ) const

inline

Returns the maximum number of entries in the cache for storing pre- processed data for rendering vertices.

See set_max_size().

Definition at line 35 of file geomCacheManager.I.

Referenced by evict_old_entries().

get_total_size()

int GeomCacheManager::get_total_size ( ) const

inline

Returns the number of entries currently in the cache.

Definition at line 43 of file geomCacheManager.I.

set_max_size()

void GeomCacheManager::set_max_size ( int  max_size ) const

inline

Specifies the maximum number of entries in the cache for storing pre- processed data for rendering vertices.

This limit is flexible, and may be temporarily exceeded if many different Geoms are pre-processed during the space of a single frame.

This is not a limit on the actual vertex data, which is what it is; it is also not a limit on the amount of memory used by the video driver or the system graphics interface, which Panda has no control over.

Definition at line 25 of file geomCacheManager.I.

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The documentation for this class was generated from the following files:

• panda/src/gobj/geomCacheManager.h
• panda/src/gobj/geomCacheManager.cxx
• panda/src/gobj/geomCacheManager.I