it_bus/ref_counted_base.h

#ifndef _IT_BUS_REF_COUNTED_BASE_H_
#define _IT_BUS_REF_COUNTED_BASE_H_

// @Copyright 2004 IONA Technologies, Plc. All Rights Reserved.
//
#include <it_tsdsa/atomic_counter.h>
#include <it_bus/api_defines.h>

namespace IT_Bus
{
    class IT_AFC_API RefCountedBase
    {
      public:
        void
        _add_ref() const
            throw(())
        {
            ++ IT_CONST_CAST(IT_AtomicCounter&, m_ref_count);
        }

        void
        _remove_ref() const
            throw(())
        {
            if (-- IT_CONST_CAST(IT_AtomicCounter&, m_ref_count) == 0)
            {
                destroy();
            }
        }

        IT_ULong
        _ref_count() const
            throw(())
        {
            IT_AtomicCounter& ref_count = IT_CONST_CAST(IT_AtomicCounter&, m_ref_count); 
            return ref_count;            
        }

      protected:
        RefCountedBase(
        ) throw(()) :
            m_ref_count(1)
        {}

        virtual ~RefCountedBase();

        virtual void
        destroy() const throw(());

      private:
        IT_AtomicCounter m_ref_count;
    };
}

#endif  

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