Ref.h

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//-----------------------------------------------------------------------------
//
//  Ref.h
//
//  Reference counting for objects.
//
//  Copyright (c) 2010 Mal Lansell <mal@lansell.org>
//  All rights reserved.
//
//  SOFTWARE NOTICE AND LICENSE
//
//  This file is part of OpenZWave.
//
//  OpenZWave 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 3 of the License,
//  or (at your option) any later version.
//
//  OpenZWave 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 OpenZWave.  If not, see <http://www.gnu.org/licenses/>.
//
//-----------------------------------------------------------------------------
#ifndef _Ref_H
#define _Ref_H

#pragma once

#include "Defs.h"

namespace OpenZWave
{
    namespace Internal
    {
        namespace Platform
        {
            class Ref
            {
                public:
                    Ref()
                    {
                        m_refs = 1;
                    }

                    void AddRef()
                    {
                        ++m_refs;
                    }

                    int32 Release()
                    {
                        if (0 >= (--m_refs))
                        {
                            delete this;
                            return 0;
                        }
                        return m_refs;
                    }

                protected:
                    virtual ~Ref()
                    {
                    }

                private:
                    // Reference counting
                    int32 m_refs;

            };
        // class Ref
        }// namespace Platform
    } // namespace Internal
} // namespace OpenZWave

#endif // _Ref_H