TMCCountedObject Class Reference
[MCCore]

Inheritance diagram for TMCCountedObject:

List of all members.

Public Member Functions
virtual MCErr MCCOMAPI	QueryInterface (const MCIID &riid, void **ppvObj)
virtual uint32 MCCOMAPI	AddRef ()
virtual uint32 MCCOMAPI	Release ()
Static Public Member Functions
void	Create (TMCCountedObject **outObject)
Protected Member Functions
	TMCCountedObject (void)
virtual	~TMCCountedObject ()
Protected Attributes
uint32	fRefCount

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Detailed Description

Counted objects are objects that use a counter to keep track of how many other objects need them, and delete themselves when nobody needs them anymore. A counted object has an AddRef method that increments its counter, and a Release method that decrements it. When the value of the counter reaches zero, the object is deleted.

Take a look at TMCCountedCreateHelper to see how to create and return a counted object

Note:

If your object can be accessed by two threads at the same time, you ought to derive it from TMCSMPCountedObject (it uses an atomic counter).

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Constructor & Destructor Documentation

TMCCountedObject::TMCCountedObject (  void   )  [protected]

virtual TMCCountedObject::~TMCCountedObject (   )  [protected, virtual]

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Member Function Documentation

uint32 TMCCountedObject::AddRef (   )  [inline, virtual]

Increments the reference count of the object Implements IMCUnknown. Reimplemented in TBasicMenuCallBack, and TBasicThread.

void TMCCountedObject::Create (  TMCCountedObject **  outObject  )  [static]

virtual MCErr MCCOMAPI TMCCountedObject::QueryInterface (  const MCIID &  riid, void **  ppvObj )  [virtual]

Check if the object supports a given interface and returns a pointer to that interface if it does. Note that QueryInterface will increment the reference count of the object by one if the interface is found. Parameters: riid  GUID of the interface ppvObj  A pointer to the pointer being returned. Implements IMCUnknown. Reimplemented in TBasicMenuCallBack, and TBasicThread.

uint32 TMCCountedObject::Release (   )  [inline, virtual]

Decrements the reference count of the object. If the reference count reaches zero, the object is destroyed. Implements IMCUnknown. Reimplemented in TBasicMenuCallBack, and TBasicThread.

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Member Data Documentation

uint32 TMCCountedObject::fRefCount [protected]

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

• MCCountedObject.h

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