1 : // nonstandard construct and destroy functions -*- C++ -*-
2 :
3 : // Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
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
18 : // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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 :
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 :
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.
59 : */
60 :
61 : #ifndef _STL_CONSTRUCT_H
62 : #define _STL_CONSTRUCT_H 1
63 :
64 : #include <bits/cpp_type_traits.h>
65 : #include <new>
66 :
67 : namespace std
68 : {
69 : /**
70 : * @if maint
71 : * Constructs an object in existing memory by invoking an allocated
72 : * object's constructor with an initializer.
73 : * @endif
74 : */
75 : template<typename _T1, typename _T2>
76 : inline void
77 14667629 : _Construct(_T1* __p, const _T2& __value)
78 : {
79 : // _GLIBCXX_RESOLVE_LIB_DEFECTS
80 : // 402. wrong new expression in [some_]allocator::construct
81 14667629 : ::new(static_cast<void*>(__p)) _T1(__value);
82 : }
83 :
84 : /**
85 : * @if maint
86 : * Constructs an object in existing memory by invoking an allocated
87 : * object's default constructor (no initializers).
88 : * @endif
89 : */
90 : template<typename _T1>
91 : inline void
92 : _Construct(_T1* __p)
93 : {
94 : // _GLIBCXX_RESOLVE_LIB_DEFECTS
95 : // 402. wrong new expression in [some_]allocator::construct
96 : ::new(static_cast<void*>(__p)) _T1();
97 : }
98 :
99 : /**
100 : * @if maint
101 : * Destroy the object pointed to by a pointer type.
102 : * @endif
103 : */
104 : template<typename _Tp>
105 : inline void
106 14400281 : _Destroy(_Tp* __pointer)
107 14400281 : { __pointer->~_Tp(); }
108 :
109 : /**
110 : * @if maint
111 : * Destroy a range of objects with nontrivial destructors.
112 : *
113 : * This is a helper function used only by _Destroy().
114 : * @endif
115 : */
116 : template<typename _ForwardIterator>
117 : inline void
118 : __destroy_aux(_ForwardIterator __first, _ForwardIterator __last,
119 6283814 : __false_type)
120 : {
121 20684095 : for (; __first != __last; ++__first)
122 20684095 : std::_Destroy(&*__first);
123 : }
124 :
125 : /**
126 : * @if maint
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().
132 : * @endif
133 : */
134 : template<typename _ForwardIterator>
135 : inline void
136 61870131 : __destroy_aux(_ForwardIterator, _ForwardIterator, __true_type)
137 61870131 : { }
138 :
139 : /**
140 : * @if maint
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.
144 : * @endif
145 : */
146 : template<typename _ForwardIterator>
147 : inline void
148 68153945 : _Destroy(_ForwardIterator __first, _ForwardIterator __last)
149 : {
150 : typedef typename iterator_traits<_ForwardIterator>::value_type
151 : _Value_type;
152 : typedef typename std::__is_scalar<_Value_type>::__type
153 : _Has_trivial_destructor;
154 :
155 68153945 : std::__destroy_aux(__first, __last, _Has_trivial_destructor());
156 : }
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 _Tp>
178 : inline void
179 : _Destroy(_ForwardIterator __first, _ForwardIterator __last,
180 68153945 : allocator<_Tp>)
181 : {
182 68153945 : _Destroy(__first, __last);
183 : }
184 :
185 :
186 : } // namespace std
187 :
188 : #endif /* _STL_CONSTRUCT_H */
189 :
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