cond_dtor_entry_dealtor.hpp   [plain text]

// -*- C++ -*-

// Copyright (C) 2005, 2006 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library 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, or (at your option) any later
// version.

// This library 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 library; see the file COPYING.  If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
// MA 02111-1307, USA.

// As a special exception, you may use this file as part of a free
// software library without restriction.  Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to
// produce an executable, this file does not by itself cause the
// resulting executable to be covered by the GNU General Public
// License.  This exception does not however invalidate any other
// reasons why the executable file might be covered by the GNU General
// Public License.

// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.

// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice
// and this permission notice appear in supporting documentation. None
// of the above authors, nor IBM Haifa Research Laboratories, make any
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/**
 * @file cond_dtor_entry_dealtor.hpp
 * Contains a binary tree container conditional deallocator
 */

class cond_dealtor
{
public:
  inline
  cond_dealtor(leaf_pointer p_nd) : m_p_nd(p_nd),
				    m_no_action_dtor(false),
				    m_call_destructor(false)
  { }

  inline void
  set_no_action_dtor()
  {
    m_no_action_dtor = true;
  }

  inline void
  set_call_destructor()
  {
    m_call_destructor = true;
  }

  inline
  ~cond_dealtor()
  {
    if (m_no_action_dtor)
      return;

    if (m_call_destructor)
      m_p_nd->~leaf();

    s_leaf_allocator.deallocate(m_p_nd, 1);
  }

protected:
  leaf_pointer m_p_nd;
  bool m_no_action_dtor;
  bool m_call_destructor;
};