mi32/autorefcount.h

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#ifndef  INC_MI32_AUTOREFCOUNT_H
#define  INC_MI32_AUTOREFCOUNT_H

template <typename _TT> class AUTOREFCOUNT {
   public:

      AUTOREFCOUNT (
         ): m_pInstance(new _TT) { if (m_pInstance->GetRefCount() == 0) m_pInstance->AddRef(); }

      AUTOREFCOUNT (
         const AUTOREFCOUNT<_TT>& rhs
         ): m_pInstance(rhs.m_pInstance) { m_pInstance->AddRef(); }

      ~AUTOREFCOUNT (
         ) { m_pInstance->Release(); }

      AUTOREFCOUNT& operator= (
         const AUTOREFCOUNT<_TT>& rhs
         ) {
         if (this != &rhs) {
            m_pInstance->Release();
            m_pInstance = rhs.m_pInstance;
            m_pInstance->AddRef();
            }
         return (*this);
         }

      const _TT& operator* (
         ) const { return (*m_pInstance); }

      _TT& operator* (
         ) { return (*m_pInstance); }

      const _TT* operator-> (
         ) const { return (&*m_pInstance); }

      _TT* operator-> (
         ) { return (&*m_pInstance); }

      void GetExclusive (
         ) {
         if (m_pInstance->GetRefCount() > 1) {
            m_pInstance = new _TT(*m_pInstance);
            if (m_pInstance->GetRefCount() == 0) m_pInstance->AddRef();
            }
         }

   private:
      #ifndef GENERATING_DOXYGEN_OUTPUT
      _TT *m_pInstance;
      #endif // GENERATING_DOXYGEN_OUTPUT
   };

#endif   // INC_MI32_AUTOREFCOUNT_H

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