57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
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/*==========================================================================*\
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Module: baseobj.h
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Copyright Microsoft Corporation 1996, All Rights Reserved.
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Owner: mikepurt
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Descriptions: Provide OLE COM consistent reference counting.
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\*==========================================================================*/
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#ifndef __BASEOBJ_H__
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#define __BASEOBJ_H__
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#include "dbgtrace.h" //make sure we get _ASSERT
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class CBaseObject {
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public:
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CBaseObject()
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{ m_lReferences = 1; }; // consistent with OLE COM
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virtual ~CBaseObject() {};
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// Included so the vtable is in a standard format ...
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virtual HRESULT STDMETHODCALLTYPE QueryInterface(
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IID FAR& riid,
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LPVOID FAR* ppvObj) { return E_NOTIMPL; }
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ULONG AddRef()
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{ return (ULONG)(InterlockedExchangeAdd(&m_lReferences, 1) + 1); };
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ULONG Release()
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{
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LONG lRef;
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lRef = InterlockedExchangeAdd(&m_lReferences, -1) - 1;
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_ASSERT(lRef >= 0);
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_ASSERT(lRef < 0x00100000); // Sanity check against freed memory.
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if (0 == lRef)
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delete this; // Don't touch any member vars after this.
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return (ULONG)lRef;
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};
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protected:
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LONG m_lReferences;
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CBaseObject(CBaseObject&); // Force an error in instances where a copy constructor
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// was needed, but none was provided.
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};
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#endif // __BASEOBJ_H__
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