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      1 // -*- C++ -*-
      2 
      3 // Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
      4 //
      5 // This file is part of the GNU ISO C++ Library.  This library is free
      6 // software; you can redistribute it and/or modify it under the terms
      7 // of the GNU General Public License as published by the Free Software
      8 // Foundation; either version 3, or (at your option) any later
      9 // version.
     10 
     11 // This library is distributed in the hope that it will be useful, but
     12 // WITHOUT ANY WARRANTY; without even the implied warranty of
     13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14 // General Public License for more details.
     15 
     16 // Under Section 7 of GPL version 3, you are granted additional
     17 // permissions described in the GCC Runtime Library Exception, version
     18 // 3.1, as published by the Free Software Foundation.
     19 
     20 // You should have received a copy of the GNU General Public License and
     21 // a copy of the GCC Runtime Library Exception along with this program;
     22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
     23 // <http://www.gnu.org/licenses/>.
     24 
     25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
     26 
     27 // Permission to use, copy, modify, sell, and distribute this software
     28 // is hereby granted without fee, provided that the above copyright
     29 // notice appears in all copies, and that both that copyright notice
     30 // and this permission notice appear in supporting documentation. None
     31 // of the above authors, nor IBM Haifa Research Laboratories, make any
     32 // representation about the suitability of this software for any
     33 // purpose. It is provided "as is" without express or implied
     34 // warranty.
     35 
     36 /**
     37  * @file cond_dtor_entry_dealtor.hpp
     38  * Contains a binary tree container conditional deallocator
     39  */
     40 
     41 class cond_dealtor
     42 {
     43 public:
     44   inline
     45   cond_dealtor(leaf_pointer p_nd) : m_p_nd(p_nd),
     46 				    m_no_action_dtor(false),
     47 				    m_call_destructor(false)
     48   { }
     49 
     50   inline void
     51   set_no_action_dtor()
     52   {
     53     m_no_action_dtor = true;
     54   }
     55 
     56   inline void
     57   set_call_destructor()
     58   {
     59     m_call_destructor = true;
     60   }
     61 
     62   inline
     63   ~cond_dealtor()
     64   {
     65     if (m_no_action_dtor)
     66       return;
     67 
     68     if (m_call_destructor)
     69       m_p_nd->~leaf();
     70 
     71     s_leaf_allocator.deallocate(m_p_nd, 1);
     72   }
     73 
     74 protected:
     75   leaf_pointer m_p_nd;
     76   bool m_no_action_dtor;
     77   bool m_call_destructor;
     78 };
     79 
     80