osg::Referenced Class Reference

#include <Referenced>

Inheritance diagram for osg::Referenced:

Public Member Functions
	Referenced ()
	Referenced (bool threadSafeRefUnref)
	Referenced (const Referenced &)
Referenced &	operator= (const Referenced &)
virtual void	setThreadSafeRefUnref (bool)
bool	getThreadSafeRefUnref () const
OpenThreads::Mutex *	getRefMutex () const
int	ref () const
int	unref () const
int	unref_nodelete () const
int	referenceCount () const
ObserverSet *	getObserverSet () const
ObserverSet *	getOrCreateObserverSet () const
void	addObserver (Observer *observer) const
void	removeObserver (Observer *observer) const

Static Public Member Functions
static OpenThreads::Mutex *	getGlobalReferencedMutex ()
static void	setDeleteHandler (DeleteHandler *handler)
static DeleteHandler *	getDeleteHandler ()

Protected Member Functions
virtual	~Referenced ()
void	signalObserversAndDelete (bool signalDelete, bool doDelete) const
void	deleteUsingDeleteHandler () const

Protected Attributes
OpenThreads::AtomicPtr	_observerSet
OpenThreads::Atomic	_refCount

Friends
class	DeleteHandler

Detailed Description

Base class for providing reference counted objects.

Constructor & Destructor Documentation

Referenced() [1/3]

osg::Referenced::Referenced

(

)

Referenced by osg::ObserverSet::addRefLock(), osgWidget::Callback::Callback(), osg::CullingSet::CullingSet(), osgDB::DatabasePager::DatabaseRequest::DatabaseRequest(), osg::NodeVisitor::DatabaseRequestHandler::DatabaseRequestHandler(), osg::Image::DimensionsChangedCallback::DimensionsChangedCallback(), osg::DisplaySettings::DisplaySettings(), osg::DisplaySettings::DisplaySettings(), osgDB::DotOsgWrapper::DotOsgWrapper(), osgDB::DynamicLibrary::DynamicLibrary(), osgDB::DynamicLibrary::DynamicLibrary(), osgText::Font::FontImplementation::FontImplementation(), osg::ObserverSet::getObserverdObject(), osg::ObserverSet::getObserverdObject(), osg::Object::getUserData(), osg::Object::getUserData(), osgDB::ImagePager::ImageRequest::ImageRequest(), osg::NodeVisitor::ImageRequestHandler::ImageRequestHandler(), osg::LineSegment::LineSegment(), osg::Object::Object(), osg::Object::Object(), osg::ObserverSet::ObserverSet(), osg::ObserverSet::ObserverSet(), operator=(), osgGA::PointerData::PointerData(), osg::RefBlock::RefBlock(), osg::RefBlockCount::RefBlockCount(), Referenced(), osgUtil::RenderLeaf::RenderLeaf(), osg::Object::setUserData(), and osgFX::Technique::Technique().

Referenced() [2/3]

osg::Referenced::Referenced ( bool threadSafeRefUnref )

explicit

Deprecated, Referenced is now always uses thread safe ref/unref, use default Referenced() constructor instead

Referenced() [3/3]

osg::Referenced::Referenced

(

const Referenced &

)

References Referenced().

~Referenced()

virtual osg::Referenced::~Referenced ( )

protectedvirtual

Member Function Documentation

addObserver()

void osg::Referenced::addObserver

(

Observer *

observer

)

const

Add a Observer that is observing this object, notify the Observer when this object gets deleted.

deleteUsingDeleteHandler()

void osg::Referenced::deleteUsingDeleteHandler ( ) const

protected

getDeleteHandler()

DeleteHandler * osg::Referenced::getDeleteHandler ( )

static

Get a DeleteHandler.

References DeleteHandler.

getGlobalReferencedMutex()

OpenThreads::Mutex * osg::Referenced::getGlobalReferencedMutex ( )

static

Get the optional global Referenced mutex, this can be shared between all osg::Referenced.

References ref(), and unref().

Referenced by getRefMutex().

getObserverSet()

ObserverSet * osg::Referenced::getObserverSet ( ) const

inline

Get the ObserverSet if one is attached, otherwise return NULL.

References _observerSet.

getOrCreateObserverSet()

ObserverSet * osg::Referenced::getOrCreateObserverSet

(

)

const

Get the ObserverSet if one is attached, otherwise create an ObserverSet, attach it, then return this newly created ObserverSet.

getRefMutex()

OpenThreads::Mutex * osg::Referenced::getRefMutex ( ) const

inline

Get the mutex used to ensure thread safety of ref()/unref().

References getGlobalReferencedMutex().

getThreadSafeRefUnref()

bool osg::Referenced::getThreadSafeRefUnref ( ) const

inline

Get whether a mutex is used to ensure ref() and unref() are thread safe.

operator=()

Referenced & osg::Referenced::operator= ( const Referenced & )

inline

References Referenced().

ref()

int osg::Referenced::ref ( ) const

inline

Increment the reference count by one, indicating that this object has another pointer which is referencing it.

References _refCount.

Referenced by osg::AlphaFunc::AlphaFunc(), getGlobalReferencedMutex(), osg::intrusive_ptr_add_ref(), osgPresentation::PropertyManager::ref(), osg::AlphaFunc::setFunction(), osg::Stencil::setFunction(), osg::StencilTwoSided::setFunction(), osg::Stencil::setFunctionRef(), and osg::StencilTwoSided::setFunctionRef().

referenceCount()

int osg::Referenced::referenceCount ( ) const

inline

Return the number of pointers currently referencing this object.

References _refCount.

Referenced by osgAnimation::Target::getCount().

removeObserver()

void osg::Referenced::removeObserver

(

Observer *

observer

)

const

Remove Observer that is observing this object.

References osg::resizeGLObjectBuffers().

setDeleteHandler()

void osg::Referenced::setDeleteHandler ( DeleteHandler * handler )

static

Set a DeleteHandler to which deletion of all referenced counted objects will be delegated.

References DeleteHandler.

setThreadSafeRefUnref()

virtual void osg::Referenced::setThreadSafeRefUnref ( bool )

inlinevirtual

Deprecated, Referenced is always theadsafe so there method now has no effect and does not need to be called.

Reimplemented in osg::Drawable, osg::Group, osg::LightSource, osg::Node, osg::Object, osg::Program, osg::StateSet, osg::TexGenNode, osgSim::OverlayNode::OverlayData, osgSim::OverlayNode, osgText::Font, osgText::Glyph3D, osgText::GlyphGeometry, and osgText::GlyphTexture.

Referenced by osg::TestResult::TestResult().

signalObserversAndDelete()

void osg::Referenced::signalObserversAndDelete ( bool signalDelete, bool doDelete ) const

protected

Referenced by unref().

unref()

int osg::Referenced::unref ( ) const

inline

Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. If the reference count goes to zero, it is assumed that this object is no longer referenced and is automatically deleted.

References _refCount, and signalObserversAndDelete().

Referenced by getGlobalReferencedMutex(), osg::intrusive_ptr_release(), and osgPresentation::PropertyManager::unref().

unref_nodelete()

int osg::Referenced::unref_nodelete

(

)

const

Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. However, do not delete it, even if ref count goes to 0. Warning, unref_nodelete() should only be called if the user knows exactly who will be responsible for, one should prefer unref() over unref_nodelete() as the latter can lead to memory leaks.

Referenced by osg::observer_ptr< object_type >::lock(), and osg::ref_ptr< osg::Vec3Array >::release().

Friends And Related Symbol Documentation

DeleteHandler

friend class DeleteHandler

friend

References DeleteHandler.

Referenced by DeleteHandler, getDeleteHandler(), and setDeleteHandler().

Member Data Documentation

_observerSet

OpenThreads::AtomicPtr osg::Referenced::_observerSet

mutableprotected

Referenced by getObserverSet().

_refCount

OpenThreads::Atomic osg::Referenced::_refCount

mutableprotected

Referenced by ref(), referenceCount(), and unref().

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

• Referenced