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1 | // -*- C++ -*- |
2 | ||
a345e45d | 3 | // Copyright (C) 2005, 2006, 2009, 2011 Free Software Foundation, Inc. |
4569a895 AT |
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 | |
748086b7 | 8 | // Foundation; either version 3, or (at your option) any later |
4569a895 AT |
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 | ||
748086b7 JJ |
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. | |
4569a895 | 19 | |
748086b7 JJ |
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/>. | |
4569a895 AT |
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 | /** | |
a345e45d | 37 | * @file detail/cond_dealtor.hpp |
4569a895 AT |
38 | * Contains a conditional deallocator. |
39 | */ | |
40 | ||
41 | #ifndef PB_DS_COND_DEALTOR_HPP | |
42 | #define PB_DS_COND_DEALTOR_HPP | |
43 | ||
5e11f978 | 44 | namespace __gnu_pbds |
4569a895 | 45 | { |
4569a895 AT |
46 | namespace detail |
47 | { | |
a345e45d BK |
48 | /// Conditional deallocate constructor argument. |
49 | template<typename Entry, typename _Alloc> | |
50 | class cond_dealtor | |
51 | { | |
52 | typedef typename _Alloc::template rebind<Entry> __rebind_e; | |
53 | ||
54 | public: | |
55 | typedef typename __rebind_e::other entry_allocator; | |
56 | typedef typename entry_allocator::pointer entry_pointer; | |
57 | ||
58 | cond_dealtor(entry_pointer p_e) | |
59 | : m_p_e(p_e), m_no_action_destructor(false) { } | |
60 | ||
61 | ~cond_dealtor() | |
62 | { | |
63 | if (m_no_action_destructor) | |
64 | return; | |
65 | s_alloc.deallocate(m_p_e, 1); | |
66 | } | |
67 | ||
68 | void | |
69 | set_no_action() | |
70 | { m_no_action_destructor = true; } | |
71 | ||
72 | private: | |
73 | entry_pointer m_p_e; | |
74 | bool m_no_action_destructor; | |
75 | static entry_allocator s_alloc; | |
76 | }; | |
77 | ||
78 | template<typename Entry, class _Alloc> | |
79 | typename cond_dealtor<Entry, _Alloc>::entry_allocator | |
80 | cond_dealtor<Entry, _Alloc>::s_alloc; | |
4569a895 | 81 | } // namespace detail |
5e11f978 | 82 | } // namespace __gnu_pbds |
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83 | |
84 | #endif // #ifndef PB_DS_COND_DEALTOR_HPP |