RefCountImpl.h

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// Copyright (C) 2002-2017, Open Design Alliance (the "Alliance"). 
// All rights reserved. 
// 
// This software and its documentation and related materials are owned by 
// the Alliance. The software may only be incorporated into application 
// programs owned by members of the Alliance, subject to a signed 
// Membership Agreement and Supplemental Software License Agreement with the
// Alliance. The structure and organization of this software are the valuable  
// trade secrets of the Alliance and its suppliers. The software is also 
// protected by copyright law and international treaty provisions. Application  
// programs incorporating this software must include the following statement 
// with their copyright notices:
//   
//   This application incorporates Teigha(R) software pursuant to a license 
//   agreement with Open Design Alliance.
//   Teigha(R) Copyright (C) 2002-2017 by Open Design Alliance. 
//   All rights reserved.
//
// By use of this software, its documentation or related materials, you 
// acknowledge and accept the above terms.
 
 
 
 
#if !defined(_ODREFCOUNTIMPL_INCLUDED_)
#define _ODREFCOUNTIMPL_INCLUDED_
 
#include "TD_PackPush.h"
 
#include "RxObject.h"
 
template<class T, class TInterface = T>
class OdRefCountImpl : public T
{
  OdUInt32 m_nRefCounter;
 
  OdRefCountImpl& operator = (const OdRefCountImpl&);
 
  ODRX_HEAP_OPERATORS();
 
  OdRefCountImpl() : m_nRefCounter(1) {}
public:
 
  void addRef()
  {
    ++m_nRefCounter;
  }
 
  void release()
  {
                ODA_ASSERT((m_nRefCounter > 0));
                if (!(--m_nRefCounter))
                {
      T::onFinalRelease();
      delete this;
                }
  }
 
  long numRefs() const { return m_nRefCounter; }
 
  static OdSmartPtr<TInterface> createObject()
  {
    return OdSmartPtr<TInterface>(static_cast<TInterface*>(new OdRefCountImpl<T, TInterface>), kOdRxObjAttach);
  }
};
 
#define ODREFCOUNTIMPL_CONSTR(CLASS, pRes) pRes = OdRefCountImpl<CLASS>::createObject()
 
#include "TD_PackPop.h"
 
#endif // !defined(_ODREFCOUNTIMPL_INCLUDED_)