ObjectImpl.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
//-----------------------------------------------------------------------------
/*---------------------------------------------------------------------------*/
/* ObjectImpl.h                                                (C) 2000-2022 */
/*                                                                           */
/* Classe de base de l'implémentation d'un objet d'Arcane.                   */
/*---------------------------------------------------------------------------*/
#ifndef ARCANE_UTILS_OBJECTIMPL_H
#define ARCANE_UTILS_OBJECTIMPL_H
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
#include "arcane/utils/UtilsTypes.h"
 
#include <atomic>
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
namespace Arcane
{
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
class ARCANE_UTILS_EXPORT ObjectImpl
{
 public:
 
  ObjectImpl()
  : m_ref_count(0)
  {}
  ObjectImpl(const ObjectImpl& rhs) = delete;
  virtual ~ObjectImpl() {}
  ObjectImpl& operator=(const ObjectImpl& rhs) = delete;
 
 public:
 
  void addRef() { ++m_ref_count; }
  void removeRef()
  {
    Int32 r = --m_ref_count;
    if (r < 0)
      arcaneNoReferenceErrorCallTerminate(this);
    if (r == 0)
      deleteMe();
  }
  Int32 refCount() const { return m_ref_count.load(); }
 
 public:
 
  virtual void deleteMe() { delete this; }
 
 private:
 
  std::atomic<Int32> m_ref_count; 
};
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
} // namespace Arcane
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
#endif