IReferenceCounted.h

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// Copyright (C) 2002-2011 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h

#ifndef __I_IREFERENCE_COUNTED_H_INCLUDED__
#define __I_IREFERENCE_COUNTED_H_INCLUDED__

#include "irrTypes.h"

namespace irr
{


        class IReferenceCounted
        {
        public:

                IReferenceCounted()
                        : DebugName(0), ReferenceCounter(1)
                {
                }

                virtual ~IReferenceCounted()
                {
                }


                void grab() const { ++ReferenceCounter; }


                bool drop() const
                {
                        // someone is doing bad reference counting.
                        _IRR_DEBUG_BREAK_IF(ReferenceCounter <= 0)

                        --ReferenceCounter;
                        if (!ReferenceCounter)
                        {
                                delete this;
                                return true;
                        }

                        return false;
                }


                s32 getReferenceCount() const
                {
                        return ReferenceCounter;
                }


                const c8* getDebugName() const
                {
                        return DebugName;
                }

        protected:


                void setDebugName(const c8* newName)
                {
                        DebugName = newName;
                }

        private:

                const c8* DebugName;

                mutable s32 ReferenceCounter;
        };

} // end namespace irr

#endif