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56 lines
1.1 KiB
56 lines
1.1 KiB
#ifndef _REFCOUNTER_H_
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#define _REFCOUNTER_H_
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//----------------------------------------------------------------------------
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//
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// CRefCounter
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//
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// This class is supplementary to the TRefPtr template. It provides an
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// easy way to mix in reference counting properties with other classes
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//
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// Note that the destructor is protected. It must be protected so derivatives
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// can use it, but derivatives should not have a public destructor (since
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// this violates the reference counting pattern)
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//
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//---------------------------------------------------------------------------
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class CRefCounter
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{
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public:
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CRefCounter();
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void AddRef();
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void Release();
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protected:
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virtual ~CRefCounter();
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private:
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long m_lRefCount;
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};
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inline
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CRefCounter::CRefCounter()
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: m_lRefCount(0)
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{}
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inline
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CRefCounter::~CRefCounter()
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{
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_ASSERT( m_lRefCount == 0 );
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}
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inline void
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CRefCounter::AddRef()
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{
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::InterlockedIncrement( &m_lRefCount );
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}
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inline void
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CRefCounter::Release()
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{
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if ( ::InterlockedDecrement( &m_lRefCount ) == 0 )
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{
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delete this;
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}
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}
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#endif // !_REFCOUNTER_H_
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