93 lines
1.8 KiB
C++
93 lines
1.8 KiB
C++
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//+----------------------------------------------------------------------------
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//
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// Copyright (C) 1996, Microsoft Corporation
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//
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// File: cref.hxx
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//
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// Contents: Class to implement simple reference counting suitable for
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// object life cycle management.
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//
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// Classes: CReference
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//
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// Functions:
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//
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// History: Sept 17, 1996 Milans created.
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//
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//-----------------------------------------------------------------------------
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#ifndef _DFSM_REFERENCE_
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#define _DFSM_REFERENCE_
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//+----------------------------------------------------------------------------
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//
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// Class: CReference
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//
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// Synopsis: Class to abstract object life cycle management via ref
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// counting.
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//
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//-----------------------------------------------------------------------------
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class CReference {
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public:
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CReference();
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virtual ~CReference();
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virtual ULONG AddRef();
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virtual ULONG Release();
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protected:
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ULONG _cRef;
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};
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//---------------------------------------------------------------------------
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//
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// Inline Methods
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//
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//---------------------------------------------------------------------------
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inline CReference::CReference() {
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IDfsVolInlineDebOut((
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DEB_TRACE, "CReference::+CReference(0x%x)\n",
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this));
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_cRef = 1;
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}
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inline CReference::~CReference() {
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IDfsVolInlineDebOut((
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DEB_TRACE, "CReference::~CReference(0x%x)\n",
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this));
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ASSERT(_cRef == 0);
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}
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inline ULONG CReference::AddRef() {
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_cRef++;
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return( _cRef);
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}
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inline ULONG CReference::Release() {
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ULONG cReturn;
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IDfsVolInlineDebOut((DEB_TRACE, "CReference::Release()\n"));
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cReturn = --_cRef;
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if (_cRef == 0) {
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delete this;
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}
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IDfsVolInlineDebOut((DEB_TRACE, "CReference::Release() exit\n"));
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return( cReturn );
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}
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#endif _DFSM_REFERENCE_
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