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65 lines
1.9 KiB
65 lines
1.9 KiB
/***************************************************************************
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referencecounted.h - description
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-------------------
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begin : Mo Apr 18 2005
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copyright : (C) 2005 by Dominik Seichter
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email : domseichter@web.de
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***************************************************************************/
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/***************************************************************************
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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***************************************************************************/
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#ifndef REFERENCE_COUNTED_H
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#define REFERENCE_COUNTED_H
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/**
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* A class to make objects reference counted.
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* Most likely you will want to subclass this class.
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* @see TCanvasItem for an example.
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*
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* Whenever you get a reference to a ReferenceCounted
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* object, call addRef(). Whenever you do not need
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* the object anymore, call remRef().
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*
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* When the reference count reaches 0, the object
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* deletes itself.
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*/
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class ReferenceCounted {
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public:
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ReferenceCounted():m_counter(0) {}
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virtual ~ReferenceCounted() {}
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inline void addRef()
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{
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m_counter++;
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}
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inline void remRef()
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{
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if(--m_counter == 0) delete this;
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}
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inline unsigned int refCount()
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{
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return m_counter;
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}
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private:
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unsigned int m_counter;
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};
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#endif // REFERENCE_COUNTED_H
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