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1 : : // nonstandard construct and destroy functions -*- C++ -*-
2 : :
3 : : // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
4 : : // 2009, 2010, 2011
5 : : // Free Software Foundation, Inc.
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
10 : : // Free Software Foundation; either version 3, or (at your option)
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 : :
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.
21 : :
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/>.
26 : :
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 : :
53 : : /** @file bits/stl_construct.h
54 : : * This is an internal header file, included by other library headers.
55 : : * Do not attempt to use it directly. @headername{memory}
56 : : */
57 : :
58 : : #ifndef _STL_CONSTRUCT_H
59 : : #define _STL_CONSTRUCT_H 1
60 : :
61 : : #include <new>
62 : : #include <bits/move.h>
63 : : #include <ext/alloc_traits.h>
64 : :
65 : : namespace std _GLIBCXX_VISIBILITY(default)
66 : : {
67 : : _GLIBCXX_BEGIN_NAMESPACE_VERSION
68 : :
69 : : /**
70 : : * Constructs an object in existing memory by invoking an allocated
71 : : * object's constructor with an initializer.
72 : : */
73 : : #ifdef __GXX_EXPERIMENTAL_CXX0X__
74 : : template<typename _T1, typename... _Args>
75 : : inline void
76 : : _Construct(_T1* __p, _Args&&... __args)
77 : : { ::new(static_cast<void*>(__p)) _T1(std::forward<_Args>(__args)...); }
78 : : #else
79 : : template<typename _T1, typename _T2>
80 : : inline void
81 : 65679268 : _Construct(_T1* __p, const _T2& __value)
82 : : {
83 : : // _GLIBCXX_RESOLVE_LIB_DEFECTS
84 : : // 402. wrong new expression in [some_]allocator::construct
85 [ + - ][ + - ]: 65679268 : ::new(static_cast<void*>(__p)) _T1(__value);
[ + - ][ # # ]
[ # # ][ + - ]
[ + - ][ + - ]
[ + - ][ + - ]
[ # # ][ # # ]
[ # # ][ # # ]
[ # # ][ # # ]
86 : 65679268 : }
87 : : #endif
88 : :
89 : : /**
90 : : * Destroy the object pointed to by a pointer type.
91 : : */
92 : : template<typename _Tp>
93 : : inline void
94 : 124813472 : _Destroy(_Tp* __pointer)
95 : 124813472 : { __pointer->~_Tp(); }
96 : :
97 : : template<bool>
98 : : struct _Destroy_aux
99 : : {
100 : : template<typename _ForwardIterator>
101 : : static void
102 : 75987292 : __destroy(_ForwardIterator __first, _ForwardIterator __last)
103 : : {
104 [ + + - + ]: 200800764 : for (; __first != __last; ++__first)
[ + + ][ + + ]
[ - + ][ # # ]
[ - + ][ # # ]
[ + + ][ + + ]
[ # # ][ # # ]
[ # # ][ # # ]
[ # # ]
105 : 124813472 : std::_Destroy(std::__addressof(*__first));
106 : 75987292 : }
107 : : };
108 : :
109 : : template<>
110 : : struct _Destroy_aux<true>
111 : : {
112 : : template<typename _ForwardIterator>
113 : : static void
114 : 235849065 : __destroy(_ForwardIterator, _ForwardIterator) { }
115 : : };
116 : :
117 : : /**
118 : : * Destroy a range of objects. If the value_type of the object has
119 : : * a trivial destructor, the compiler should optimize all of this
120 : : * away, otherwise the objects' destructors must be invoked.
121 : : */
122 : : template<typename _ForwardIterator>
123 : : inline void
124 : 311836357 : _Destroy(_ForwardIterator __first, _ForwardIterator __last)
125 : : {
126 : : typedef typename iterator_traits<_ForwardIterator>::value_type
127 : : _Value_type;
128 : 311836357 : std::_Destroy_aux<__has_trivial_destructor(_Value_type)>::
129 : : __destroy(__first, __last);
130 : 311836356 : }
131 : :
132 : : /**
133 : : * Destroy a range of objects using the supplied allocator. For
134 : : * nondefault allocators we do not optimize away invocation of
135 : : * destroy() even if _Tp has a trivial destructor.
136 : : */
137 : :
138 : : template <typename _Tp> class allocator;
139 : :
140 : : template<typename _ForwardIterator, typename _Allocator>
141 : : void
142 : : _Destroy(_ForwardIterator __first, _ForwardIterator __last,
143 : : _Allocator& __alloc)
144 : : {
145 : : typedef __gnu_cxx::__alloc_traits<_Allocator> __traits;
146 : : for (; __first != __last; ++__first)
147 : : __traits::destroy(__alloc, std::__addressof(*__first));
148 : : }
149 : :
150 : : template<typename _ForwardIterator, typename _Tp>
151 : : inline void
152 : 311836357 : _Destroy(_ForwardIterator __first, _ForwardIterator __last,
153 : : allocator<_Tp>&)
154 : : {
155 [ # # ][ # # ]: 311836357 : _Destroy(__first, __last);
156 : 311836356 : }
157 : :
158 : : _GLIBCXX_END_NAMESPACE_VERSION
159 : : } // namespace
160 : :
161 : : #endif /* _STL_CONSTRUCT_H */
162 : :
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