// -*- C++ -*- // Copyright (C) 2005-2021 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 #include <ext/pb_ds/detail/types_traits.hpp> namespace __gnu_pbds { namespace detail { /// Conditional deallocate constructor argument. template<typename Entry, typename _Alloc> class cond_dealtor { typedef rebind_traits<_Alloc, Entry> alloc_traits; public: typedef typename alloc_traits::allocator_type entry_allocator; typedef typename alloc_traits::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 SIMPAN PERUBAHAN