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 __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 _Destroy(_ForwardIterator __first, _ForwardIterator __last) 113 { 114 typedef typename iterator_traits<_ForwardIterator>::value_type 115 _Value_type; 116 std::_Destroy_aux<__has_trivial_destructor(_Value_type)>:: 117 __destroy(__first, __last); 118 } 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 _Destroy(_ForwardIterator __first, _ForwardIterator __last, 131 _Allocator& __alloc) 132 { 133 for (; __first != __last; ++__first) 134 __alloc.destroy(&*__first); 135 } 136 137 template<typename _ForwardIterator, typename _Tp> 138 inline void 139 _Destroy(_ForwardIterator __first, _ForwardIterator __last, 140 allocator<_Tp>&) 141 { 142 _Destroy(__first, __last); 143 } 144 145 _GLIBCXX_END_NAMESPACE 146 147 #endif /* _STL_CONSTRUCT_H */ 148 149
