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42526146 PE |
1 | // nonstandard construct and destroy functions -*- C++ -*- |
2 | ||
c0736a9d | 3 | // Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
42526146 PE |
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 | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 2, or (at your option) | |
9 | // any later version. | |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING. If not, write to the Free | |
83f51799 | 18 | // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
42526146 PE |
19 | // USA. |
20 | ||
21 | // As a special exception, you may use this file as part of a free software | |
22 | // library without restriction. Specifically, if other files instantiate | |
23 | // templates or use macros or inline functions from this file, or you compile | |
24 | // this file and link it with other files to produce an executable, this | |
25 | // file does not by itself cause the resulting executable to be covered by | |
26 | // the GNU General Public License. This exception does not however | |
27 | // invalidate any other reasons why the executable file might be covered by | |
28 | // the GNU General Public License. | |
29 | ||
725dc051 BK |
30 | /* |
31 | * | |
32 | * Copyright (c) 1994 | |
33 | * Hewlett-Packard Company | |
34 | * | |
35 | * Permission to use, copy, modify, distribute and sell this software | |
36 | * and its documentation for any purpose is hereby granted without fee, | |
37 | * provided that the above copyright notice appear in all copies and | |
38 | * that both that copyright notice and this permission notice appear | |
39 | * in supporting documentation. Hewlett-Packard Company makes no | |
40 | * representations about the suitability of this software for any | |
41 | * purpose. It is provided "as is" without express or implied warranty. | |
42 | * | |
43 | * | |
44 | * Copyright (c) 1996,1997 | |
45 | * Silicon Graphics Computer Systems, Inc. | |
46 | * | |
47 | * Permission to use, copy, modify, distribute and sell this software | |
48 | * and its documentation for any purpose is hereby granted without fee, | |
49 | * provided that the above copyright notice appear in all copies and | |
50 | * that both that copyright notice and this permission notice appear | |
51 | * in supporting documentation. Silicon Graphics makes no | |
52 | * representations about the suitability of this software for any | |
53 | * purpose. It is provided "as is" without express or implied warranty. | |
54 | */ | |
55 | ||
729e3d3f PE |
56 | /** @file stl_construct.h |
57 | * This is an internal header file, included by other library headers. | |
58 | * You should not attempt to use it directly. | |
725dc051 BK |
59 | */ |
60 | ||
3d7c150e BK |
61 | #ifndef _STL_CONSTRUCT_H |
62 | #define _STL_CONSTRUCT_H 1 | |
725dc051 | 63 | |
c0736a9d | 64 | #include <bits/cpp_type_traits.h> |
a6863e25 | 65 | #include <new> |
725dc051 | 66 | |
d53d7f6e PE |
67 | namespace std |
68 | { | |
494fff4c | 69 | /** |
04b7c941 | 70 | * @if maint |
b0037845 PE |
71 | * Constructs an object in existing memory by invoking an allocated |
72 | * object's constructor with an initializer. | |
04b7c941 | 73 | * @endif |
494fff4c | 74 | */ |
d78e147a | 75 | template<typename _T1, typename _T2> |
494fff4c SW |
76 | inline void |
77 | _Construct(_T1* __p, const _T2& __value) | |
9dbaa948 PC |
78 | { |
79 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
80 | // 402. wrong new expression in [some_]allocator::construct | |
ed6814f7 | 81 | ::new(static_cast<void*>(__p)) _T1(__value); |
9dbaa948 | 82 | } |
ed6814f7 | 83 | |
494fff4c | 84 | /** |
04b7c941 | 85 | * @if maint |
b0037845 PE |
86 | * Constructs an object in existing memory by invoking an allocated |
87 | * object's default constructor (no initializers). | |
04b7c941 | 88 | * @endif |
494fff4c | 89 | */ |
d78e147a | 90 | template<typename _T1> |
494fff4c SW |
91 | inline void |
92 | _Construct(_T1* __p) | |
9dbaa948 PC |
93 | { |
94 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
ed6814f7 | 95 | // 402. wrong new expression in [some_]allocator::construct |
d78e147a | 96 | ::new(static_cast<void*>(__p)) _T1(); |
9dbaa948 | 97 | } |
494fff4c | 98 | |
da73f9de PC |
99 | /** |
100 | * @if maint | |
101 | * Destroy the object pointed to by a pointer type. | |
102 | * @endif | |
103 | */ | |
d78e147a | 104 | template<typename _Tp> |
da73f9de PC |
105 | inline void |
106 | _Destroy(_Tp* __pointer) | |
107 | { __pointer->~_Tp(); } | |
108 | ||
494fff4c | 109 | /** |
04b7c941 | 110 | * @if maint |
ed6814f7 | 111 | * Destroy a range of objects with nontrivial destructors. |
494fff4c SW |
112 | * |
113 | * This is a helper function used only by _Destroy(). | |
04b7c941 | 114 | * @endif |
494fff4c | 115 | */ |
d78e147a | 116 | template<typename _ForwardIterator> |
494fff4c | 117 | inline void |
15d72060 PC |
118 | __destroy_aux(_ForwardIterator __first, _ForwardIterator __last, |
119 | __false_type) | |
43da93a7 PC |
120 | { |
121 | for (; __first != __last; ++__first) | |
122 | std::_Destroy(&*__first); | |
123 | } | |
494fff4c SW |
124 | |
125 | /** | |
04b7c941 | 126 | * @if maint |
494fff4c SW |
127 | * Destroy a range of objects with trivial destructors. Since the destructors |
128 | * are trivial, there's nothing to do and hopefully this function will be | |
129 | * entirely optimized away. | |
130 | * | |
131 | * This is a helper function used only by _Destroy(). | |
04b7c941 | 132 | * @endif |
494fff4c | 133 | */ |
ed6814f7 | 134 | template<typename _ForwardIterator> |
494fff4c SW |
135 | inline void |
136 | __destroy_aux(_ForwardIterator, _ForwardIterator, __true_type) | |
137 | { } | |
138 | ||
494fff4c | 139 | /** |
04b7c941 | 140 | * @if maint |
494fff4c SW |
141 | * Destroy a range of objects. If the value_type of the object has |
142 | * a trivial destructor, the compiler should optimize all of this | |
143 | * away, otherwise the objects' destructors must be invoked. | |
04b7c941 | 144 | * @endif |
494fff4c | 145 | */ |
d78e147a | 146 | template<typename _ForwardIterator> |
494fff4c SW |
147 | inline void |
148 | _Destroy(_ForwardIterator __first, _ForwardIterator __last) | |
149 | { | |
150 | typedef typename iterator_traits<_ForwardIterator>::value_type | |
151 | _Value_type; | |
c0736a9d PC |
152 | typedef typename std::__is_scalar<_Value_type>::__type |
153 | _Has_trivial_destructor; | |
494fff4c | 154 | |
da73f9de | 155 | std::__destroy_aux(__first, __last, _Has_trivial_destructor()); |
494fff4c | 156 | } |
1985f1cd MA |
157 | |
158 | /** | |
159 | * @if maint | |
160 | * Destroy a range of objects using the supplied allocator. For | |
161 | * nondefault allocators we do not optimize away invocation of | |
162 | * destroy() even if _Tp has a trivial destructor. | |
163 | * @endif | |
164 | */ | |
165 | ||
166 | template <typename _Tp> class allocator; | |
167 | ||
168 | template<typename _ForwardIterator, typename _Allocator> | |
169 | void | |
170 | _Destroy(_ForwardIterator __first, _ForwardIterator __last, | |
171 | _Allocator __alloc) | |
172 | { | |
173 | for (; __first != __last; ++__first) | |
174 | __alloc.destroy(&*__first); | |
175 | } | |
176 | ||
177 | template<typename _ForwardIterator, typename _Allocator, typename _Tp> | |
178 | inline void | |
179 | _Destroy(_ForwardIterator __first, _ForwardIterator __last, | |
180 | allocator<_Tp>) | |
181 | { | |
182 | _Destroy(__first, __last); | |
183 | } | |
184 | ||
185 | ||
d53d7f6e | 186 | } // namespace std |
725dc051 | 187 | |
3d7c150e | 188 | #endif /* _STL_CONSTRUCT_H */ |
725dc051 | 189 |