SharedReference.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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/* SharedReference.h                                           (C) 2000-2022 */
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/* Classe de base d'un compteur de référence.                                */
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#ifndef ARCANE_SHAREDREFERENCE_H
#define ARCANE_SHAREDREFERENCE_H
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#include "arcane/ISharedReference.h"
 
#include <atomic>
 
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namespace Arcane
{
 
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/*!
 * \ingroup Core
 * \brief Implémentation d'un compteur de référence utilisant std::atomic.
 */
class ARCANE_CORE_EXPORT SharedReference
: public ISharedReference
{
 public:
 
  SharedReference() : m_ref_count(0) {}
  
 public:
  
  void addRef() override;
  void removeRef() override;
  Int32 refCount() const override { return m_ref_count; }
 
  //! Détruit l'objet référencé
  virtual void deleteMe() =0;
 
 private:
 
  std::atomic<Int32> m_ref_count; //!< Nombre de références sur l'objet.
};
 
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} // End namespace Arcane
 
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#endif