MEM_RefCounted.h

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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 */
 
#ifndef __MEM_REFCOUNTED_H__
#define __MEM_REFCOUNTED_H__
 
class MEM_RefCounted {
 public:
  MEM_RefCounted() : m_refCount(1)
  {
  }
 
  inline virtual int getRef() const;
 
  inline virtual int incRef();
 
  inline virtual int decRef();
 
 protected:
  virtual ~MEM_RefCounted()
  {
  }
 
 protected:
  int m_refCount;
};
 
inline int MEM_RefCounted::getRef() const
{
  return m_refCount;
}
 
inline int MEM_RefCounted::incRef()
{
  return ++m_refCount;
}
 
inline int MEM_RefCounted::decRef()
{
  m_refCount--;
  if (m_refCount == 0) {
    delete this;
    return 0;
  }
  return m_refCount;
}
 
#endif  // __MEM_REFCOUNTED_H__