AutoDestroyUserData.h

// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
//-----------------------------------------------------------------------------
// Copyright 2000-2022 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
// See the top-level COPYRIGHT file for details.
// SPDX-License-Identifier: Apache-2.0
//-----------------------------------------------------------------------------
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/* AutoDestroyUserData.h                                       (C) 2000-2012 */
/*                                                                           */
/* UserData s'auto-détruisant une fois détaché.                              */
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#ifndef ARCANE_UTILS_AUTODESTROYUSERDATA_H
#define ARCANE_UTILS_AUTODESTROYUSERDATA_H
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#include "arcane/utils/IUserData.h"
 
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ARCANE_BEGIN_NAMESPACE
 
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template<typename T>
class DeleteOnDestroyBehaviour
{
 public:
  static void destroy(T* t){ delete t; }
};
 
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template<typename T,typename DestroyBehaviour = DeleteOnDestroyBehaviour<T> >
class AutoDestroyUserData
: public IUserData
{
 public:
  
  AutoDestroyUserData(T* adata): m_data(adata){}
 private:
  ~AutoDestroyUserData()
  {
  }
 
 public:
 
  virtual void notifyAttach(){}
 
  virtual void notifyDetach()
  {
    DestroyBehaviour::destroy(m_data);
    m_data = 0;
    delete this;
  }
  
  T* data() { return m_data; }
 
 private:
  T* m_data;
};
 
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ARCANE_END_NAMESPACE
 
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#endif