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NodeReferenceCount Class Reference

This class specializes ReferenceCount to add an additional counter, called node_ref_count, for the purposes of counting the number of times the object is referenced by a "node", whatever that may mean in context. More...

Inheritance diagram for NodeReferenceCount:
ReferenceCount

Public Member Functions

int getNodeRefCount ()
 Returns the current reference count. More...
 
 nodeRef ()
 Explicitly increments the node reference count and the normal reference count simultaneously. More...
 
bool nodeUnref ()
 Explicitly decrements the node reference count and the normal reference count simultaneously. More...
 
 nodeUnrefOnly ()
 Decrements the node reference count without affecting the normal reference count. More...
 
bool testRefCountIntegrity ()
 Does some easy checks to make sure that the reference count isn't completely bogus. More...
 
- Public Member Functions inherited from ReferenceCount
int getRefCount ()
 Returns the current reference count. More...
 
 ref ()
 Explicitly increments the reference count. More...
 
bool testRefCountIntegrity ()
 Does some easy checks to make sure that the reference count isn't completely bogus. More...
 
bool testRefCountNonzero ()
 Does some easy checks to make sure that the reference count isn't zero, or completely bogus. More...
 
bool unref ()
 Explicitly decrements the reference count. More...
 

Static Public Member Functions

static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from ReferenceCount
static TypeHandle getClassType ()
 

Additional Inherited Members

- Public Attributes inherited from ReferenceCount
int ref_count
 The current reference count. More...
 

Detailed Description

This class specializes ReferenceCount to add an additional counter, called node_ref_count, for the purposes of counting the number of times the object is referenced by a "node", whatever that may mean in context.

The new methods node_ref() and node_unref() automatically increment and decrement the primary reference count as well. There also exists a NodePointerTo<> class to maintain the node_ref counters automatically.

See also CachedTypedWritableReferenceCount, which is similar in principle, as well as NodeCachedReferenceCount, which combines both of these.

Member Function Documentation

◆ getClassType()

static TypeHandle getClassType ( )
static

◆ getNodeRefCount()

int getNodeRefCount ( )

Returns the current reference count.

◆ nodeRef()

nodeRef ( )

Explicitly increments the node reference count and the normal reference count simultaneously.

◆ nodeUnref()

bool nodeUnref ( )

Explicitly decrements the node reference count and the normal reference count simultaneously.

The return value is true if the new reference count is nonzero, false if it is zero.

◆ nodeUnrefOnly()

nodeUnrefOnly ( )

Decrements the node reference count without affecting the normal reference count.

Intended to be called by derived classes only, presumably to reimplement node_unref().

◆ testRefCountIntegrity()

bool testRefCountIntegrity ( )

Does some easy checks to make sure that the reference count isn't completely bogus.