MCRefCount.h

#if !defined(__MCREFCOUNT_H_)
#define __MCREFCOUNT_H_

#ident "@(#)$Id: MCRefCount.h,v 1.7 2004/12/02 07:05:20 mike Exp $"

/*
 * Copyright Miba Consulting Ltd. (c) 2000-2003
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#include "mcllib/MCTypes.h"
#include "mcllib/MCTypeTraits.h"

namespace mcllib
{
    class MCRefCountAccessorBase;

    class MCRefCount
    {
    public:
        MCRefCount();
        MCRefCount(const MCRefCount& rc);
        MCRefCount& operator=(const MCRefCount& rc);
        ~MCRefCount();
    private:
        mcatomic_t m_cnt;
        friend class MCRefCountAccessorBase;
    };

    template<typename T>
    class MCRefCountWrap : public MCRefCount
    {
    private:
        typedef MCTypeTraits<T> traits;
        typedef typename traits::copy_param_type copy_param_type;
        typedef typename traits::copy_return_type copy_return_type;
    public:
        MCRefCountWrap();
        MCRefCountWrap(copy_param_type data)
            : m_data(data)
        {
        }
        inline operator T&()
        {
            return(m_data);
        }
    private:
        T m_data;
    };

    // This is here (rather than in the template itself)
    // because the wrapped class might not have a default
    // constructor
    template<typename T>
    MCRefCountWrap<T>::MCRefCountWrap()
    {
    }

};

#endif

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