SkRefCntBase Class Reference

SkRefCntBase is the base class for objects that may be shared by multiple objects. More...

#include <SkRefCnt.h>

Inheritance diagram for SkRefCntBase:

Public Member Functions
	SkRefCntBase ()
	Default construct, initializing the reference count to 1. More...
virtual	~SkRefCntBase ()
	Destruct, asserting that the reference count is 1. More...
bool	unique () const
	May return true if the caller is the only owner. More...
void	ref () const
	Increment the reference count. More...
void	unref () const
	Decrement the reference count. More...

Friends
class	SkWeakRefCnt

Detailed Description

SkRefCntBase is the base class for objects that may be shared by multiple objects.

When an existing owner wants to share a reference, it calls ref(). When an owner wants to release its reference, it calls unref(). When the shared object's reference count goes to zero as the result of an unref() call, its (virtual) destructor is called. It is an error for the destructor to be called explicitly (or via the object going out of scope on the stack or calling delete) if getRefCnt() > 1.

Constructor & Destructor Documentation

SkRefCntBase()

SkRefCntBase::SkRefCntBase ( )

inline

Default construct, initializing the reference count to 1.

~SkRefCntBase()

virtual SkRefCntBase::~SkRefCntBase ( )

inlinevirtual

Destruct, asserting that the reference count is 1.

Member Function Documentation

ref()

void SkRefCntBase::ref ( ) const

inline

Increment the reference count.

Must be balanced by a call to unref().

unique()

bool SkRefCntBase::unique ( ) const

inline

May return true if the caller is the only owner.

Ensures that all previous owner's actions are complete.

unref()

void SkRefCntBase::unref ( ) const

inline

Decrement the reference count.

If the reference count is 1 before the decrement, then delete the object. Note that if this is the case, then the object needs to have been allocated via new, and not on the stack.

Friends And Related Function Documentation

SkWeakRefCnt

friend class SkWeakRefCnt

friend

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

• /CHECKOUT/include/core/SkRefCnt.h