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.hpp 38 * Contains a conditional destructor 39 */ 40 41 template<typename Size_Type> 42 class cond_dtor 43 { 44 public: 45 cond_dtor(value_vector a_vec, iterator& r_last_it, Size_Type total_size) 46 : m_a_vec(a_vec), m_r_last_it(r_last_it), m_max_size(total_size), 47 m_no_action(false) 48 { } 49 50 ~cond_dtor() 51 { 52 if (m_no_action) 53 return; 54 iterator it = m_a_vec; 55 while (it != m_r_last_it) 56 { 57 it->~value_type(); 58 ++it; 59 } 60 61 if (m_max_size > 0) 62 value_allocator().deallocate(m_a_vec, m_max_size); 63 } 64 65 inline void 66 set_no_action() 67 { m_no_action = true; } 68 69 protected: 70 value_vector m_a_vec; 71 iterator& m_r_last_it; 72 const Size_Type m_max_size; 73 bool m_no_action; 74 }; 75
