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42526146 PE |
1 | // nonstandard construct and destroy functions -*- C++ -*- |
2 | ||
882b3d5c PC |
3 | // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
4 | // 2009, 2010 | |
ff2ea587 | 5 | // Free Software Foundation, Inc. |
42526146 PE |
6 | // |
7 | // This file is part of the GNU ISO C++ Library. This library is free | |
8 | // software; you can redistribute it and/or modify it under the | |
9 | // terms of the GNU General Public License as published by the | |
748086b7 | 10 | // Free Software Foundation; either version 3, or (at your option) |
42526146 PE |
11 | // any later version. |
12 | ||
13 | // This library is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
748086b7 JJ |
18 | // Under Section 7 of GPL version 3, you are granted additional |
19 | // permissions described in the GCC Runtime Library Exception, version | |
20 | // 3.1, as published by the Free Software Foundation. | |
42526146 | 21 | |
748086b7 JJ |
22 | // You should have received a copy of the GNU General Public License and |
23 | // a copy of the GCC Runtime Library Exception along with this program; | |
24 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
25 | // <http://www.gnu.org/licenses/>. | |
42526146 | 26 | |
725dc051 BK |
27 | /* |
28 | * | |
29 | * Copyright (c) 1994 | |
30 | * Hewlett-Packard Company | |
31 | * | |
32 | * Permission to use, copy, modify, distribute and sell this software | |
33 | * and its documentation for any purpose is hereby granted without fee, | |
34 | * provided that the above copyright notice appear in all copies and | |
35 | * that both that copyright notice and this permission notice appear | |
36 | * in supporting documentation. Hewlett-Packard Company makes no | |
37 | * representations about the suitability of this software for any | |
38 | * purpose. It is provided "as is" without express or implied warranty. | |
39 | * | |
40 | * | |
41 | * Copyright (c) 1996,1997 | |
42 | * Silicon Graphics Computer Systems, Inc. | |
43 | * | |
44 | * Permission to use, copy, modify, distribute and sell this software | |
45 | * and its documentation for any purpose is hereby granted without fee, | |
46 | * provided that the above copyright notice appear in all copies and | |
47 | * that both that copyright notice and this permission notice appear | |
48 | * in supporting documentation. Silicon Graphics makes no | |
49 | * representations about the suitability of this software for any | |
50 | * purpose. It is provided "as is" without express or implied warranty. | |
51 | */ | |
52 | ||
f910786b | 53 | /** @file bits/stl_construct.h |
729e3d3f | 54 | * This is an internal header file, included by other library headers. |
f910786b | 55 | * Do not attempt to use it directly. @headername{memory} |
725dc051 BK |
56 | */ |
57 | ||
3d7c150e BK |
58 | #ifndef _STL_CONSTRUCT_H |
59 | #define _STL_CONSTRUCT_H 1 | |
725dc051 | 60 | |
a6863e25 | 61 | #include <new> |
6401164d | 62 | #include <bits/move.h> |
725dc051 | 63 | |
3cbc7af0 BK |
64 | _GLIBCXX_BEGIN_NAMESPACE(std) |
65 | ||
494fff4c | 66 | /** |
b0037845 PE |
67 | * Constructs an object in existing memory by invoking an allocated |
68 | * object's constructor with an initializer. | |
494fff4c | 69 | */ |
55dd8445 | 70 | #ifdef __GXX_EXPERIMENTAL_CXX0X__ |
fe27aa8b PC |
71 | template<typename _T1, typename... _Args> |
72 | inline void | |
73 | _Construct(_T1* __p, _Args&&... __args) | |
74 | { ::new(static_cast<void*>(__p)) _T1(std::forward<_Args>(__args)...); } | |
55dd8445 | 75 | #else |
fe27aa8b PC |
76 | template<typename _T1, typename _T2> |
77 | inline void | |
494fff4c | 78 | _Construct(_T1* __p, const _T2& __value) |
9dbaa948 PC |
79 | { |
80 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
81 | // 402. wrong new expression in [some_]allocator::construct | |
fe27aa8b | 82 | ::new(static_cast<void*>(__p)) _T1(__value); |
9dbaa948 | 83 | } |
fe27aa8b | 84 | #endif |
ed6814f7 | 85 | |
da73f9de | 86 | /** |
da73f9de | 87 | * Destroy the object pointed to by a pointer type. |
da73f9de | 88 | */ |
d78e147a | 89 | template<typename _Tp> |
da73f9de PC |
90 | inline void |
91 | _Destroy(_Tp* __pointer) | |
92 | { __pointer->~_Tp(); } | |
93 | ||
cf0e6fff PC |
94 | template<bool> |
95 | struct _Destroy_aux | |
96 | { | |
97 | template<typename _ForwardIterator> | |
98 | static void | |
99 | __destroy(_ForwardIterator __first, _ForwardIterator __last) | |
100 | { | |
101 | for (; __first != __last; ++__first) | |
882b3d5c | 102 | std::_Destroy(std::__addressof(*__first)); |
cf0e6fff PC |
103 | } |
104 | }; | |
105 | ||
106 | template<> | |
107 | struct _Destroy_aux<true> | |
108 | { | |
109 | template<typename _ForwardIterator> | |
110 | static void | |
111 | __destroy(_ForwardIterator, _ForwardIterator) { } | |
112 | }; | |
113 | ||
494fff4c SW |
114 | /** |
115 | * Destroy a range of objects. If the value_type of the object has | |
116 | * a trivial destructor, the compiler should optimize all of this | |
117 | * away, otherwise the objects' destructors must be invoked. | |
494fff4c | 118 | */ |
d78e147a | 119 | template<typename _ForwardIterator> |
494fff4c SW |
120 | inline void |
121 | _Destroy(_ForwardIterator __first, _ForwardIterator __last) | |
122 | { | |
123 | typedef typename iterator_traits<_ForwardIterator>::value_type | |
124 | _Value_type; | |
cf0e6fff PC |
125 | std::_Destroy_aux<__has_trivial_destructor(_Value_type)>:: |
126 | __destroy(__first, __last); | |
494fff4c | 127 | } |
1985f1cd MA |
128 | |
129 | /** | |
1985f1cd MA |
130 | * Destroy a range of objects using the supplied allocator. For |
131 | * nondefault allocators we do not optimize away invocation of | |
132 | * destroy() even if _Tp has a trivial destructor. | |
1985f1cd MA |
133 | */ |
134 | ||
135 | template <typename _Tp> class allocator; | |
136 | ||
137 | template<typename _ForwardIterator, typename _Allocator> | |
138 | void | |
139 | _Destroy(_ForwardIterator __first, _ForwardIterator __last, | |
c531371e | 140 | _Allocator& __alloc) |
1985f1cd MA |
141 | { |
142 | for (; __first != __last; ++__first) | |
882b3d5c | 143 | __alloc.destroy(std::__addressof(*__first)); |
1985f1cd MA |
144 | } |
145 | ||
9191d641 | 146 | template<typename _ForwardIterator, typename _Tp> |
1985f1cd MA |
147 | inline void |
148 | _Destroy(_ForwardIterator __first, _ForwardIterator __last, | |
c531371e | 149 | allocator<_Tp>&) |
1985f1cd MA |
150 | { |
151 | _Destroy(__first, __last); | |
152 | } | |
1985f1cd | 153 | |
3cbc7af0 | 154 | _GLIBCXX_END_NAMESPACE |
725dc051 | 155 | |
3d7c150e | 156 | #endif /* _STL_CONSTRUCT_H */ |
725dc051 | 157 |