122 lines
2.3 KiB
C++
122 lines
2.3 KiB
C++
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/*
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* refcount.cpp - RefCount class implementation.
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*
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* Taken from URL code - essentially identical to DavidDi's original code
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*
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* Created: ChrisPi 9-11-95
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*
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*/
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/* Headers
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**********/
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#include "precomp.h"
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#include "clrefcnt.hpp"
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/****************************** Public Functions *****************************/
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#ifdef DEBUG
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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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(! pcrefcnt->m_ObjectDestroyed ||
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IS_VALID_CODE_PTR(pcrefcnt->m_ObjectDestroyed, OBJECTDESTROYEDPROC)));
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}
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#endif
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/********************************** Methods **********************************/
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RefCount::RefCount(OBJECTDESTROYEDPROC ObjectDestroyed)
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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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ASSERT(! ObjectDestroyed ||
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IS_VALID_CODE_PTR(ObjectDestroyed, OBJECTDESTROYEDPROC));
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m_ulcRef = 1;
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m_ObjectDestroyed = ObjectDestroyed;
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DBGAPI_REF("Ref: %08X c=%d (created)", this, m_ulcRef);
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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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DBGAPI_REF("Ref: %08X c=%d (destroyed)", this, m_ulcRef);
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if (m_ObjectDestroyed)
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{
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m_ObjectDestroyed();
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m_ObjectDestroyed = NULL;
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}
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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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DBGAPI_REF("Ref: %08X c=%d (AddRef)", this, 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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DBGAPI_REF("Ref: %08X c=%d (Release)", this, 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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