1 : // nonstandard construct and destroy functions -*- C++ -*-
2 :
3 : // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
4 : // Free Software Foundation, Inc.
5 : //
6 : // This file is part of the GNU ISO C++ Library. This library is free
7 : // software; you can redistribute it and/or modify it under the
8 : // terms of the GNU General Public License as published by the
9 : // Free Software Foundation; either version 3, or (at your option)
10 : // any later version.
11 :
12 : // This library is distributed in the hope that it will be useful,
13 : // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 : // GNU General Public License for more details.
16 :
17 : // Under Section 7 of GPL version 3, you are granted additional
18 : // permissions described in the GCC Runtime Library Exception, version
19 : // 3.1, as published by the Free Software Foundation.
20 :
21 : // You should have received a copy of the GNU General Public License and
22 : // a copy of the GCC Runtime Library Exception along with this program;
23 : // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 : // <http://www.gnu.org/licenses/>.
25 :
26 : /*
27 : *
28 : * Copyright (c) 1994
29 : * Hewlett-Packard Company
30 : *
31 : * Permission to use, copy, modify, distribute and sell this software
32 : * and its documentation for any purpose is hereby granted without fee,
33 : * provided that the above copyright notice appear in all copies and
34 : * that both that copyright notice and this permission notice appear
35 : * in supporting documentation. Hewlett-Packard Company makes no
36 : * representations about the suitability of this software for any
37 : * purpose. It is provided "as is" without express or implied warranty.
38 : *
39 : *
40 : * Copyright (c) 1996,1997
41 : * Silicon Graphics Computer Systems, Inc.
42 : *
43 : * Permission to use, copy, modify, distribute and sell this software
44 : * and its documentation for any purpose is hereby granted without fee,
45 : * provided that the above copyright notice appear in all copies and
46 : * that both that copyright notice and this permission notice appear
47 : * in supporting documentation. Silicon Graphics makes no
48 : * representations about the suitability of this software for any
49 : * purpose. It is provided "as is" without express or implied warranty.
50 : */
51 :
52 : /** @file stl_construct.h
53 : * This is an internal header file, included by other library headers.
54 : * You should not attempt to use it directly.
55 : */
56 :
57 : #ifndef _STL_CONSTRUCT_H
58 : #define _STL_CONSTRUCT_H 1
59 :
60 : #include <new>
61 : #include <bits/move.h>
62 :
63 : _GLIBCXX_BEGIN_NAMESPACE(std)
64 :
65 : /**
66 : * Constructs an object in existing memory by invoking an allocated
67 : * object's constructor with an initializer.
68 : */
69 : template<typename _T1, typename _T2>
70 : inline void
71 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
72 : // Allow perfect forwarding
73 1075764 : _Construct(_T1* __p, _T2&& __value)
74 : #else
75 : _Construct(_T1* __p, const _T2& __value)
76 : #endif
77 : {
78 : // _GLIBCXX_RESOLVE_LIB_DEFECTS
79 : // 402. wrong new expression in [some_]allocator::construct
80 1075764 : ::new(static_cast<void*>(__p)) _T1(_GLIBCXX_FORWARD(_T2, __value));
81 1075764 : }
82 :
83 : /**
84 : * Destroy the object pointed to by a pointer type.
85 : */
86 : template<typename _Tp>
87 : inline void
88 1302364 : _Destroy(_Tp* __pointer)
89 1302364 : { __pointer->~_Tp(); }
90 :
91 : template<bool>
92 : struct _Destroy_aux
93 : {
94 : template<typename _ForwardIterator>
95 : static void
96 50526 : __destroy(_ForwardIterator __first, _ForwardIterator __last)
97 : {
98 1352890 : for (; __first != __last; ++__first)
99 1302364 : std::_Destroy(&*__first);
100 50526 : }
101 : };
102 :
103 : template<>
104 : struct _Destroy_aux<true>
105 : {
106 : template<typename _ForwardIterator>
107 : static void
108 2918321 : __destroy(_ForwardIterator, _ForwardIterator) { }
109 : };
110 :
111 : /**
112 : * Destroy a range of objects. If the value_type of the object has
113 : * a trivial destructor, the compiler should optimize all of this
114 : * away, otherwise the objects' destructors must be invoked.
115 : */
116 : template<typename _ForwardIterator>
117 : inline void
118 2968847 : _Destroy(_ForwardIterator __first, _ForwardIterator __last)
119 : {
120 : typedef typename iterator_traits<_ForwardIterator>::value_type
121 : _Value_type;
122 2968847 : std::_Destroy_aux<__has_trivial_destructor(_Value_type)>::
123 : __destroy(__first, __last);
124 2968847 : }
125 :
126 : /**
127 : * Destroy a range of objects using the supplied allocator. For
128 : * nondefault allocators we do not optimize away invocation of
129 : * destroy() even if _Tp has a trivial destructor.
130 : */
131 :
132 : template <typename _Tp> class allocator;
133 :
134 : template<typename _ForwardIterator, typename _Allocator>
135 : void
136 0 : _Destroy(_ForwardIterator __first, _ForwardIterator __last,
137 : _Allocator& __alloc)
138 : {
139 0 : for (; __first != __last; ++__first)
140 0 : __alloc.destroy(&*__first);
141 0 : }
142 :
143 : template<typename _ForwardIterator, typename _Tp>
144 : inline void
145 2968847 : _Destroy(_ForwardIterator __first, _ForwardIterator __last,
146 : allocator<_Tp>&)
147 : {
148 2968847 : _Destroy(__first, __last);
149 2968847 : }
150 :
151 : _GLIBCXX_END_NAMESPACE
152 :
153 : #endif /* _STL_CONSTRUCT_H */
154 :
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