///////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2002-2016, Open Design Alliance (the "Alliance").
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// All rights reserved.
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//
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// This software and its documentation and related materials are owned by
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// the Alliance. The software may only be incorporated into application
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// programs owned by members of the Alliance, subject to a signed
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// Membership Agreement and Supplemental Software License Agreement with the
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// Alliance. The structure and organization of this software are the valuable
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// trade secrets of the Alliance and its suppliers. The software is also
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// protected by copyright law and international treaty provisions. Application
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// programs incorporating this software must include the following statement
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// with their copyright notices:
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//
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// This application incorporates Teigha(R) software pursuant to a license
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// agreement with Open Design Alliance.
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// Teigha(R) Copyright (C) 2002-2016 by Open Design Alliance.
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// All rights reserved.
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//
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// By use of this software, its documentation or related materials, you
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// acknowledge and accept the above terms.
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///////////////////////////////////////////////////////////////////////////////
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#if !defined(OdRxObjectImpl_INCLUDED_)
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#define OdRxObjectImpl_INCLUDED_
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#include "OdaCommon.h"
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#include "TD_PackPush.h"
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#include "RxObject.h"
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#include "OdMutex.h"
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/** \details
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<group OdRx_Classes>
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The template class provides the <link smart_pointers_definition_standard.html, standard implementation of the counting references>
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for instances of objects derived from the OdRxObject class.
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\sa
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TD_Db
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\sa
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<link smart_pointers_example_count_standard.html, Example of Counting References>
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\sa
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<link smart_pointers_overview.html, Overview of Smart Pointer Classes>
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The OdStaticRxObject class
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*/
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template<class T, class TInterface = T>
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class OdRxObjectImpl : public T
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{
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/** \details
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Allows to create OdRxObjectImpl<T> instances inside this class only.
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*/
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OdRefCounter m_nRefCounter;
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/** \details
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Assignment operator prohibited.
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*/
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OdRxObjectImpl& operator = (const OdRxObjectImpl&);
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protected:
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ODRX_HEAP_OPERATORS();
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public:
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/** \details
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Constructor sets the reference counter to one.
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*/
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OdRxObjectImpl()
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{
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m_nRefCounter = 1;
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}
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/** \details
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Increments the reference counter.
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*/
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void addRef()
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{
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++m_nRefCounter;
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}
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/** \details
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Decrements the reference counter, checks the reference counter, and destroys the instance
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when the reference counter reaches zero.
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*/
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void release()
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{
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ODA_ASSERT((m_nRefCounter > 0));
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if (!(--m_nRefCounter))
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{
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delete this;
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}
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}
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/** \details
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Returns the number of references to an instance of this class.
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*/
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long numRefs() const { return m_nRefCounter; }
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/** \details
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It is the pseudo-constructor that creates an instance of this class and returns the typified smart pointer to it.
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*/
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static OdSmartPtr<TInterface> createObject()
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{
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return OdSmartPtr<TInterface>(static_cast<TInterface*>(new OdRxObjectImpl<T, TInterface>), kOdRxObjAttach);
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}
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};
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/** \details
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Defines the pseudo-constructor for the specified class that is equivalent the pseudo-constructor of the wrapper class using the standard implementation.
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*/
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#define RXIMPL_CONSTR(ClassName) OdRxObjectImpl<ClassName>::createObject()
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/** \details
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Defines a pseudo-constructor for the specified class.
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*/
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#define ABSTRACTIMPL_CONSTR(CLASS) OdRxObjectImpl<CLASS##Impl>::createObject()
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#include "TD_PackPop.h"
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#endif // !defined(OdRxObjectImpl_INCLUDED_)
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