File Coverage

/usr/include/c++/5/bits/stl_construct.h
Criterion Covered Total %
statement 2 2 100.0
branch n/a
condition n/a
subroutine n/a
pod n/a
total 2 2 100.0


line stmt bran cond sub pod time code
1             // nonstandard construct and destroy functions -*- C++ -*-
2              
3             // Copyright (C) 2001-2015 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 3, 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             // Under Section 7 of GPL version 3, you are granted additional
17             // permissions described in the GCC Runtime Library Exception, version
18             // 3.1, as published by the Free Software Foundation.
19              
20             // You should have received a copy of the GNU General Public License and
21             // a copy of the GCC Runtime Library Exception along with this program;
22             // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23             // <http://www.gnu.org/licenses/>.
24              
25             /*
26             *
27             * Copyright (c) 1994
28             * Hewlett-Packard Company
29             *
30             * Permission to use, copy, modify, distribute and sell this software
31             * and its documentation for any purpose is hereby granted without fee,
32             * provided that the above copyright notice appear in all copies and
33             * that both that copyright notice and this permission notice appear
34             * in supporting documentation. Hewlett-Packard Company makes no
35             * representations about the suitability of this software for any
36             * purpose. It is provided "as is" without express or implied warranty.
37             *
38             *
39             * Copyright (c) 1996,1997
40             * Silicon Graphics Computer Systems, Inc.
41             *
42             * Permission to use, copy, modify, distribute and sell this software
43             * and its documentation for any purpose is hereby granted without fee,
44             * provided that the above copyright notice appear in all copies and
45             * that both that copyright notice and this permission notice appear
46             * in supporting documentation. Silicon Graphics makes no
47             * representations about the suitability of this software for any
48             * purpose. It is provided "as is" without express or implied warranty.
49             */
50              
51             /** @file bits/stl_construct.h
52             * This is an internal header file, included by other library headers.
53             * Do not attempt to use it directly. @headername{memory}
54             */
55              
56             #ifndef _STL_CONSTRUCT_H
57             #define _STL_CONSTRUCT_H 1
58              
59             #include <new>
60             #include <bits/move.h>
61             #include <ext/alloc_traits.h>
62              
63             namespace std _GLIBCXX_VISIBILITY(default)
64             {
65             _GLIBCXX_BEGIN_NAMESPACE_VERSION
66              
67             /**
68             * Constructs an object in existing memory by invoking an allocated
69             * object's constructor with an initializer.
70             */
71             #if __cplusplus >= 201103L
72             template<typename _T1, typename... _Args>
73             inline void
74             _Construct(_T1* __p, _Args&&... __args)
75             { ::new(static_cast<void*>(__p)) _T1(std::forward<_Args>(__args)...); }
76             #else
77             template<typename _T1, typename _T2>
78             inline void
79             _Construct(_T1* __p, const _T2& __value)
80             {
81             // _GLIBCXX_RESOLVE_LIB_DEFECTS
82             // 402. wrong new expression in [some_]allocator::construct
83             ::new(static_cast<void*>(__p)) _T1(__value);
84             }
85             #endif
86              
87             /**
88             * Destroy the object pointed to by a pointer type.
89             */
90             template<typename _Tp>
91             inline void
92             _Destroy(_Tp* __pointer)
93             { __pointer->~_Tp(); }
94              
95             template<bool>
96             struct _Destroy_aux
97             {
98             template<typename _ForwardIterator>
99             static void
100             __destroy(_ForwardIterator __first, _ForwardIterator __last)
101             {
102             for (; __first != __last; ++__first)
103             std::_Destroy(std::__addressof(*__first));
104             }
105             };
106              
107             template<>
108             struct _Destroy_aux<true>
109             {
110             template<typename _ForwardIterator>
111             static void
112             __destroy(_ForwardIterator, _ForwardIterator) { }
113             };
114              
115             /**
116             * Destroy a range of objects. If the value_type of the object has
117             * a trivial destructor, the compiler should optimize all of this
118             * away, otherwise the objects' destructors must be invoked.
119             */
120             template<typename _ForwardIterator>
121             inline void
122             _Destroy(_ForwardIterator __first, _ForwardIterator __last)
123             {
124             typedef typename iterator_traits<_ForwardIterator>::value_type
125             _Value_type;
126 5348           std::_Destroy_aux<__has_trivial_destructor(_Value_type)>::
127             __destroy(__first, __last);
128             }
129              
130             /**
131             * Destroy a range of objects using the supplied allocator. For
132             * nondefault allocators we do not optimize away invocation of
133             * destroy() even if _Tp has a trivial destructor.
134             */
135              
136             template<typename _ForwardIterator, typename _Allocator>
137             void
138             _Destroy(_ForwardIterator __first, _ForwardIterator __last,
139             _Allocator& __alloc)
140             {
141             typedef __gnu_cxx::__alloc_traits<_Allocator> __traits;
142             for (; __first != __last; ++__first)
143             __traits::destroy(__alloc, std::__addressof(*__first));
144             }
145              
146             template<typename _ForwardIterator, typename _Tp>
147             inline void
148             _Destroy(_ForwardIterator __first, _ForwardIterator __last,
149             allocator<_Tp>&)
150             {
151 5348           _Destroy(__first, __last);
152             }
153              
154             _GLIBCXX_END_NAMESPACE_VERSION
155             } // namespace std
156              
157             #endif /* _STL_CONSTRUCT_H */
158