Line data Source code
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 :
62 : _GLIBCXX_BEGIN_NAMESPACE(std)
63 :
64 : /**
65 : * Constructs an object in existing memory by invoking an allocated
66 : * object's constructor with an initializer.
67 : */
68 : template<typename _T1, typename _T2>
69 : inline void
70 : _Construct(_T1* __p, const _T2& __value)
71 : {
72 : // _GLIBCXX_RESOLVE_LIB_DEFECTS
73 : // 402. wrong new expression in [some_]allocator::construct
74 : ::new(static_cast<void*>(__p)) _T1(__value);
75 : }
76 :
77 : /**
78 : * Destroy the object pointed to by a pointer type.
79 : */
80 : template<typename _Tp>
81 : inline void
82 : _Destroy(_Tp* __pointer)
83 : { __pointer->~_Tp(); }
84 :
85 : template<bool>
86 : struct _Destroy_aux
87 : {
88 : template<typename _ForwardIterator>
89 : static void
90 : __destroy(_ForwardIterator __first, _ForwardIterator __last)
91 : {
92 : for (; __first != __last; ++__first)
93 : std::_Destroy(&*__first);
94 : }
95 : };
96 :
97 : template<>
98 : struct _Destroy_aux<true>
99 : {
100 : template<typename _ForwardIterator>
101 : static void
102 2839156 : __destroy(_ForwardIterator, _ForwardIterator) { }
103 : };
104 :
105 : /**
106 : * Destroy a range of objects. If the value_type of the object has
107 : * a trivial destructor, the compiler should optimize all of this
108 : * away, otherwise the objects' destructors must be invoked.
109 : */
110 : template<typename _ForwardIterator>
111 : inline void
112 2839126 : _Destroy(_ForwardIterator __first, _ForwardIterator __last)
113 : {
114 : typedef typename iterator_traits<_ForwardIterator>::value_type
115 : _Value_type;
116 2839126 : std::_Destroy_aux<__has_trivial_destructor(_Value_type)>::
117 : __destroy(__first, __last);
118 2839125 : }
119 :
120 : /**
121 : * Destroy a range of objects using the supplied allocator. For
122 : * nondefault allocators we do not optimize away invocation of
123 : * destroy() even if _Tp has a trivial destructor.
124 : */
125 :
126 : template <typename _Tp> class allocator;
127 :
128 : template<typename _ForwardIterator, typename _Allocator>
129 : void
130 165 : _Destroy(_ForwardIterator __first, _ForwardIterator __last,
131 : _Allocator& __alloc)
132 : {
133 165 : for (; __first != __last; ++__first)
134 0 : __alloc.destroy(&*__first);
135 165 : }
136 :
137 : template<typename _ForwardIterator, typename _Tp>
138 : inline void
139 2839114 : _Destroy(_ForwardIterator __first, _ForwardIterator __last,
140 : allocator<_Tp>&)
141 : {
142 2839114 : _Destroy(__first, __last);
143 2839126 : }
144 :
145 : _GLIBCXX_END_NAMESPACE
146 :
147 : #endif /* _STL_CONSTRUCT_H */
148 :
|
