1*e4b17023SJohn Marino // nonstandard construct and destroy functions -*- C++ -*-
2*e4b17023SJohn Marino
3*e4b17023SJohn Marino // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
4*e4b17023SJohn Marino // 2009, 2010, 2011
5*e4b17023SJohn Marino // Free Software Foundation, Inc.
6*e4b17023SJohn Marino //
7*e4b17023SJohn Marino // This file is part of the GNU ISO C++ Library. This library is free
8*e4b17023SJohn Marino // software; you can redistribute it and/or modify it under the
9*e4b17023SJohn Marino // terms of the GNU General Public License as published by the
10*e4b17023SJohn Marino // Free Software Foundation; either version 3, or (at your option)
11*e4b17023SJohn Marino // any later version.
12*e4b17023SJohn Marino
13*e4b17023SJohn Marino // This library is distributed in the hope that it will be useful,
14*e4b17023SJohn Marino // but WITHOUT ANY WARRANTY; without even the implied warranty of
15*e4b17023SJohn Marino // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16*e4b17023SJohn Marino // GNU General Public License for more details.
17*e4b17023SJohn Marino
18*e4b17023SJohn Marino // Under Section 7 of GPL version 3, you are granted additional
19*e4b17023SJohn Marino // permissions described in the GCC Runtime Library Exception, version
20*e4b17023SJohn Marino // 3.1, as published by the Free Software Foundation.
21*e4b17023SJohn Marino
22*e4b17023SJohn Marino // You should have received a copy of the GNU General Public License and
23*e4b17023SJohn Marino // a copy of the GCC Runtime Library Exception along with this program;
24*e4b17023SJohn Marino // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
25*e4b17023SJohn Marino // <http://www.gnu.org/licenses/>.
26*e4b17023SJohn Marino
27*e4b17023SJohn Marino /*
28*e4b17023SJohn Marino *
29*e4b17023SJohn Marino * Copyright (c) 1994
30*e4b17023SJohn Marino * Hewlett-Packard Company
31*e4b17023SJohn Marino *
32*e4b17023SJohn Marino * Permission to use, copy, modify, distribute and sell this software
33*e4b17023SJohn Marino * and its documentation for any purpose is hereby granted without fee,
34*e4b17023SJohn Marino * provided that the above copyright notice appear in all copies and
35*e4b17023SJohn Marino * that both that copyright notice and this permission notice appear
36*e4b17023SJohn Marino * in supporting documentation. Hewlett-Packard Company makes no
37*e4b17023SJohn Marino * representations about the suitability of this software for any
38*e4b17023SJohn Marino * purpose. It is provided "as is" without express or implied warranty.
39*e4b17023SJohn Marino *
40*e4b17023SJohn Marino *
41*e4b17023SJohn Marino * Copyright (c) 1996,1997
42*e4b17023SJohn Marino * Silicon Graphics Computer Systems, Inc.
43*e4b17023SJohn Marino *
44*e4b17023SJohn Marino * Permission to use, copy, modify, distribute and sell this software
45*e4b17023SJohn Marino * and its documentation for any purpose is hereby granted without fee,
46*e4b17023SJohn Marino * provided that the above copyright notice appear in all copies and
47*e4b17023SJohn Marino * that both that copyright notice and this permission notice appear
48*e4b17023SJohn Marino * in supporting documentation. Silicon Graphics makes no
49*e4b17023SJohn Marino * representations about the suitability of this software for any
50*e4b17023SJohn Marino * purpose. It is provided "as is" without express or implied warranty.
51*e4b17023SJohn Marino */
52*e4b17023SJohn Marino
53*e4b17023SJohn Marino /** @file bits/stl_construct.h
54*e4b17023SJohn Marino * This is an internal header file, included by other library headers.
55*e4b17023SJohn Marino * Do not attempt to use it directly. @headername{memory}
56*e4b17023SJohn Marino */
57*e4b17023SJohn Marino
58*e4b17023SJohn Marino #ifndef _STL_CONSTRUCT_H
59*e4b17023SJohn Marino #define _STL_CONSTRUCT_H 1
60*e4b17023SJohn Marino
61*e4b17023SJohn Marino #include <new>
62*e4b17023SJohn Marino #include <bits/move.h>
63*e4b17023SJohn Marino #include <ext/alloc_traits.h>
64*e4b17023SJohn Marino
_GLIBCXX_VISIBILITY(default)65*e4b17023SJohn Marino namespace std _GLIBCXX_VISIBILITY(default)
66*e4b17023SJohn Marino {
67*e4b17023SJohn Marino _GLIBCXX_BEGIN_NAMESPACE_VERSION
68*e4b17023SJohn Marino
69*e4b17023SJohn Marino /**
70*e4b17023SJohn Marino * Constructs an object in existing memory by invoking an allocated
71*e4b17023SJohn Marino * object's constructor with an initializer.
72*e4b17023SJohn Marino */
73*e4b17023SJohn Marino #ifdef __GXX_EXPERIMENTAL_CXX0X__
74*e4b17023SJohn Marino template<typename _T1, typename... _Args>
75*e4b17023SJohn Marino inline void
76*e4b17023SJohn Marino _Construct(_T1* __p, _Args&&... __args)
77*e4b17023SJohn Marino { ::new(static_cast<void*>(__p)) _T1(std::forward<_Args>(__args)...); }
78*e4b17023SJohn Marino #else
79*e4b17023SJohn Marino template<typename _T1, typename _T2>
80*e4b17023SJohn Marino inline void
81*e4b17023SJohn Marino _Construct(_T1* __p, const _T2& __value)
82*e4b17023SJohn Marino {
83*e4b17023SJohn Marino // _GLIBCXX_RESOLVE_LIB_DEFECTS
84*e4b17023SJohn Marino // 402. wrong new expression in [some_]allocator::construct
85*e4b17023SJohn Marino ::new(static_cast<void*>(__p)) _T1(__value);
86*e4b17023SJohn Marino }
87*e4b17023SJohn Marino #endif
88*e4b17023SJohn Marino
89*e4b17023SJohn Marino /**
90*e4b17023SJohn Marino * Destroy the object pointed to by a pointer type.
91*e4b17023SJohn Marino */
92*e4b17023SJohn Marino template<typename _Tp>
93*e4b17023SJohn Marino inline void
94*e4b17023SJohn Marino _Destroy(_Tp* __pointer)
95*e4b17023SJohn Marino { __pointer->~_Tp(); }
96*e4b17023SJohn Marino
97*e4b17023SJohn Marino template<bool>
98*e4b17023SJohn Marino struct _Destroy_aux
99*e4b17023SJohn Marino {
100*e4b17023SJohn Marino template<typename _ForwardIterator>
101*e4b17023SJohn Marino static void
102*e4b17023SJohn Marino __destroy(_ForwardIterator __first, _ForwardIterator __last)
103*e4b17023SJohn Marino {
104*e4b17023SJohn Marino for (; __first != __last; ++__first)
105*e4b17023SJohn Marino std::_Destroy(std::__addressof(*__first));
106*e4b17023SJohn Marino }
107*e4b17023SJohn Marino };
108*e4b17023SJohn Marino
109*e4b17023SJohn Marino template<>
110*e4b17023SJohn Marino struct _Destroy_aux<true>
111*e4b17023SJohn Marino {
112*e4b17023SJohn Marino template<typename _ForwardIterator>
113*e4b17023SJohn Marino static void
114*e4b17023SJohn Marino __destroy(_ForwardIterator, _ForwardIterator) { }
115*e4b17023SJohn Marino };
116*e4b17023SJohn Marino
117*e4b17023SJohn Marino /**
118*e4b17023SJohn Marino * Destroy a range of objects. If the value_type of the object has
119*e4b17023SJohn Marino * a trivial destructor, the compiler should optimize all of this
120*e4b17023SJohn Marino * away, otherwise the objects' destructors must be invoked.
121*e4b17023SJohn Marino */
122*e4b17023SJohn Marino template<typename _ForwardIterator>
123*e4b17023SJohn Marino inline void
124*e4b17023SJohn Marino _Destroy(_ForwardIterator __first, _ForwardIterator __last)
125*e4b17023SJohn Marino {
126*e4b17023SJohn Marino typedef typename iterator_traits<_ForwardIterator>::value_type
127*e4b17023SJohn Marino _Value_type;
128*e4b17023SJohn Marino std::_Destroy_aux<__has_trivial_destructor(_Value_type)>::
129*e4b17023SJohn Marino __destroy(__first, __last);
130*e4b17023SJohn Marino }
131*e4b17023SJohn Marino
132*e4b17023SJohn Marino /**
133*e4b17023SJohn Marino * Destroy a range of objects using the supplied allocator. For
134*e4b17023SJohn Marino * nondefault allocators we do not optimize away invocation of
135*e4b17023SJohn Marino * destroy() even if _Tp has a trivial destructor.
136*e4b17023SJohn Marino */
137*e4b17023SJohn Marino
138*e4b17023SJohn Marino template <typename _Tp> class allocator;
139*e4b17023SJohn Marino
140*e4b17023SJohn Marino template<typename _ForwardIterator, typename _Allocator>
141*e4b17023SJohn Marino void
142*e4b17023SJohn Marino _Destroy(_ForwardIterator __first, _ForwardIterator __last,
143*e4b17023SJohn Marino _Allocator& __alloc)
144*e4b17023SJohn Marino {
145*e4b17023SJohn Marino typedef __gnu_cxx::__alloc_traits<_Allocator> __traits;
146*e4b17023SJohn Marino for (; __first != __last; ++__first)
147*e4b17023SJohn Marino __traits::destroy(__alloc, std::__addressof(*__first));
148*e4b17023SJohn Marino }
149*e4b17023SJohn Marino
150*e4b17023SJohn Marino template<typename _ForwardIterator, typename _Tp>
151*e4b17023SJohn Marino inline void
152*e4b17023SJohn Marino _Destroy(_ForwardIterator __first, _ForwardIterator __last,
153*e4b17023SJohn Marino allocator<_Tp>&)
154*e4b17023SJohn Marino {
155*e4b17023SJohn Marino _Destroy(__first, __last);
156*e4b17023SJohn Marino }
157*e4b17023SJohn Marino
158*e4b17023SJohn Marino _GLIBCXX_END_NAMESPACE_VERSION
159*e4b17023SJohn Marino } // namespace
160*e4b17023SJohn Marino
161*e4b17023SJohn Marino #endif /* _STL_CONSTRUCT_H */
162*e4b17023SJohn Marino
163