KeosSmartPtrPolicies.h

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/*
 * This source file is part of KEOS (Free 3D Engine)
 * For the latest info, see http://www.keosengine.org/
 * E-mails : thierry.vouriot@keosengine.org, yeri@keosengine.org
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307, USA, or go to
 * http://www.gnu.org/copyleft/lesser.txt.
 *
 */

#ifndef KEOS_SMARTPTRPOLICIES_H
#define KEOS_SMARTPTRPOLICIES_H

#include "KeosPrerequisites.h"

namespace Keos
{
  //-----------------------------------------------------------------------
  template <class T>
  class CRefCount
  {
  public :

    CRefCount() : m_pCounter(new int(1))
    {}

    T* Clone(T* Ptr)
    {
      ++*m_pCounter;
      return Ptr;
    }

    void Release(T* pPtr)
    {
      if (--*m_pCounter == 0)
      {
        delete m_pCounter;
        delete pPtr;
      }
    }

    void Swap(CRefCount& RefCount)
    {
      std::swap(RefCount.m_pCounter, m_pCounter);
    }

  private :

    int* m_pCounter;
  };


  //-----------------------------------------------------------------------
  template <class T>
  class CCOMRefCounted
  {
  public :

    static T* Clone(T* pPtr)
    {
      if (pPtr)
        pPtr->AddRef();
      return pPtr;
    }

    static void Release(T* pPtr)
    {
      if (pPtr)
        pPtr->Release();
    }

    static void Swap(CCOMRefCounted&)
  {}
  };

}
; // namespace Keos

#endif // KEOS_SMARTPTRPOLICIES_H

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