| // -*- C++ -*- |
| |
| // Copyright (C) 2005-2013 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 3, 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. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| // 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 detail/cond_dealtor.hpp |
| * Contains a conditional deallocator. |
| */ |
| |
| #ifndef PB_DS_COND_DEALTOR_HPP |
| #define PB_DS_COND_DEALTOR_HPP |
| |
| namespace __gnu_pbds |
| { |
| namespace detail |
| { |
| /// Conditional deallocate constructor argument. |
| template<typename Entry, typename _Alloc> |
| class cond_dealtor |
| { |
| typedef typename _Alloc::template rebind<Entry> __rebind_e; |
| |
| public: |
| typedef typename __rebind_e::other entry_allocator; |
| typedef typename entry_allocator::pointer entry_pointer; |
| |
| cond_dealtor(entry_pointer p_e) |
| : m_p_e(p_e), m_no_action_destructor(false) { } |
| |
| ~cond_dealtor() |
| { |
| if (m_no_action_destructor) |
| return; |
| s_alloc.deallocate(m_p_e, 1); |
| } |
| |
| void |
| set_no_action() |
| { m_no_action_destructor = true; } |
| |
| private: |
| entry_pointer m_p_e; |
| bool m_no_action_destructor; |
| static entry_allocator s_alloc; |
| }; |
| |
| template<typename Entry, class _Alloc> |
| typename cond_dealtor<Entry, _Alloc>::entry_allocator |
| cond_dealtor<Entry, _Alloc>::s_alloc; |
| } // namespace detail |
| } // namespace __gnu_pbds |
| |
| #endif // #ifndef PB_DS_COND_DEALTOR_HPP |
