Resource::ObjectCache Class Reference

#include <objectcache.hpp>

Inheritance diagram for Resource::ObjectCache:

Collaboration diagram for Resource::ObjectCache:

Public Member Functions
	ObjectCache ()
void	updateTimeStampOfObjectsInCacheWithExternalReferences (double referenceTime)
void	removeExpiredObjectsInCache (double expiryTime)
void	clear ()
void	addEntryToObjectCache (const std::string &filename, osg::Object *object, double timestamp=0.0)
void	removeFromObjectCache (const std::string &fileName)
osg::ref_ptr< osg::Object >	getRefFromObjectCache (const std::string &fileName)
void	releaseGLObjects (osg::State *state)
void	accept (osg::NodeVisitor &nv)

Protected Types
typedef std::pair < osg::ref_ptr< osg::Object > , double >	ObjectTimeStampPair
typedef std::map< std::string, ObjectTimeStampPair >	ObjectCacheMap

Protected Member Functions
virtual	~ObjectCache ()

Protected Attributes
ObjectCacheMap	_objectCache
OpenThreads::Mutex	_objectCacheMutex

Member Typedef Documentation

typedef std::map<std::string, ObjectTimeStampPair > Resource::ObjectCache::ObjectCacheMap

protected

typedef std::pair<osg::ref_ptr<osg::Object>, double > Resource::ObjectCache::ObjectTimeStampPair

protected

Constructor & Destructor Documentation

Resource::ObjectCache::ObjectCache

(

)

Resource::ObjectCache::~ObjectCache ( )

protectedvirtual

Member Function Documentation

void Resource::ObjectCache::accept

(

osg::NodeVisitor &

nv

)

call node->accept(nv); for all nodes in the objectCache.

void Resource::ObjectCache::addEntryToObjectCache	(	const std::string &	filename,
		osg::Object *	object,
		double	timestamp = 0.0
	)

Add a filename,object,timestamp triple to the Registry::ObjectCache.

void Resource::ObjectCache::clear

(

)

Remove all objects in the cache regardless of having external references or expiry times.

osg::ref_ptr< osg::Object > Resource::ObjectCache::getRefFromObjectCache

(

const std::string &

fileName

)

Get an ref_ptr<Object> from the object cache

void Resource::ObjectCache::releaseGLObjects

(

osg::State *

state

)

call releaseGLObjects on all objects attached to the object cache.

void Resource::ObjectCache::removeExpiredObjectsInCache

(

double

expiryTime

)

Removed object in the cache which have a time stamp at or before the specified expiry time. This would typically be called once per frame by applications which are doing database paging, and need to prune objects that are no longer required, and called after the a called after the call to updateTimeStampOfObjectsInCacheWithExternalReferences(expirtyTime).

void Resource::ObjectCache::removeFromObjectCache

(

const std::string &

fileName

)

Remove Object from cache.

void Resource::ObjectCache::updateTimeStampOfObjectsInCacheWithExternalReferences

(

double

referenceTime

)

For each object in the cache which has an reference count greater than 1 (and therefore referenced by elsewhere in the application) set the time stamp for that object in the cache to specified time. This would typically be called once per frame by applications which are doing database paging, and need to prune objects that are no longer required. The time used should be taken from the FrameStamp::getReferenceTime().

Member Data Documentation

ObjectCacheMap Resource::ObjectCache::_objectCache

protected

OpenThreads::Mutex Resource::ObjectCache::_objectCacheMutex

protected

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

• /home/travis/build/OpenMW/openmw/components/resource/objectcache.hpp
• /home/travis/build/OpenMW/openmw/components/resource/objectcache.cpp