105 lines
1.7 KiB
C++
105 lines
1.7 KiB
C++
/*
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* refcount.cpp - RefCount class implementation.
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*/
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/* Headers
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**********/
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#include "project.hpp"
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#pragma hdrstop
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#include "clsfact.h"
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/****************************** Public Functions *****************************/
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#ifdef DEBUG
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PUBLIC_CODE BOOL IsValidPCRefCount(PCRefCount pcrefcnt)
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{
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// m_ulcRef may be any value.
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return(IS_VALID_READ_PTR(pcrefcnt, CRefCount));
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}
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#endif
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/********************************** Methods **********************************/
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RefCount::RefCount(void)
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{
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DebugEntry(RefCount::RefCount);
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/* Don't validate this until after initialization. */
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m_ulcRef = 1;
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DLLAddRef();
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ASSERT(IS_VALID_STRUCT_PTR(this, CRefCount));
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DebugExitVOID(RefCount::RefCount);
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return;
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}
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RefCount::~RefCount(void)
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{
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DebugEntry(RefCount::~RefCount);
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ASSERT(IS_VALID_STRUCT_PTR(this, CRefCount));
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// m_ulcRef may be any value.
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DLLRelease();
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ASSERT(IS_VALID_STRUCT_PTR(this, CRefCount));
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DebugExitVOID(RefCount::~RefCount);
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return;
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}
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ULONG STDMETHODCALLTYPE RefCount::AddRef(void)
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{
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DebugEntry(RefCount::AddRef);
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ASSERT(IS_VALID_STRUCT_PTR(this, CRefCount));
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ASSERT(m_ulcRef < ULONG_MAX);
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m_ulcRef++;
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ASSERT(IS_VALID_STRUCT_PTR(this, CRefCount));
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DebugExitULONG(RefCount::AddRef, m_ulcRef);
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return(m_ulcRef);
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}
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ULONG STDMETHODCALLTYPE RefCount::Release(void)
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{
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ULONG ulcRef;
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DebugEntry(RefCount::Release);
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ASSERT(IS_VALID_STRUCT_PTR(this, CRefCount));
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if (EVAL(m_ulcRef > 0))
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m_ulcRef--;
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ulcRef = m_ulcRef;
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if (! ulcRef)
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delete this;
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DebugExitULONG(RefCount::Release, ulcRef);
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return(ulcRef);
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}
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