cond_key_dtor_entry_dealtor.hpp

linux下编程用 编译软件

// -*- C++ -*-

// Copyright (C) 2005 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// 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
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied warranty.

/**
 * @file cond_key_dtor_entry_dealtor.hpp
 * Contains a binary tree container conditional deallocator
 */

class bin_seach_tree_cond_key_dtor_entry_dealtor_
{
public:
  inline
  bin_seach_tree_cond_key_dtor_entry_dealtor_(node_pointer p_nd) : m_p_nd(p_nd),
								   m_no_action_dtor(false),
								   m_key_destruct(false)
  { }

  inline void
  set_no_action_dtor()
  {
    m_no_action_dtor = true;
  }

  inline void
  set_key_destruct()
  {
    m_key_destruct = true;
  }

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

    if (m_key_destruct)
      m_p_nd->m_value.first.~Key();

    my_bin_tree_base::s_alloc.deallocate(m_p_nd, 1);
  }

protected:
  node_pointer m_p_nd;

  bool m_no_action_dtor;

  bool m_key_destruct;
};