1 // Allocator that wraps operator new -*- C++ -*-
2
3 // Copyright (C) 2001-2017 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 /** @file ext/new_allocator.h
26 * This file is a GNU extension to the Standard C++ Library.
27 */
28
29 #ifndef _NEW_ALLOCATOR_H
30 #define _NEW_ALLOCATOR_H 1
31
32 #include <bits/c++config.h>
33 #include <new>
34 #include <bits/functexcept.h>
35 #include <bits/move.h>
36 #if __cplusplus >= 201103L
37 #include <type_traits>
38 #endif
39
40 namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
41 {
42 _GLIBCXX_BEGIN_NAMESPACE_VERSION
43
44 using std::size_t;
45 using std::ptrdiff_t;
46
47 /**
48 * @brief An allocator that uses global new, as per [20.4].
49 * @ingroup allocators
50 *
51 * This is precisely the allocator defined in the C++ Standard.
52 * - all allocation calls operator new
53 * - all deallocation calls operator delete
54 *
55 * @tparam _Tp Type of allocated object.
56 */
57 template<typename _Tp>
|
(1) Event copy_without_assign: |
Class "__gnu_cxx::new_allocator<soplex::SoPlexBase<double>::RowViolation>" has a user-written copy constructor "__gnu_cxx::new_allocator<soplex::SoPlexBase<double>::RowViolation>::new_allocator(__gnu_cxx::new_allocator<soplex::SoPlexBase<double>::RowViolation> const &)" but no corresponding user-written assignment operator. |
| Also see events: |
[copy_ctor] |
58 class new_allocator
59 {
60 public:
61 typedef size_t size_type;
62 typedef ptrdiff_t difference_type;
63 typedef _Tp* pointer;
64 typedef const _Tp* const_pointer;
65 typedef _Tp& reference;
66 typedef const _Tp& const_reference;
67 typedef _Tp value_type;
68
69 template<typename _Tp1>
70 struct rebind
71 { typedef new_allocator<_Tp1> other; };
72
73 #if __cplusplus >= 201103L
74 // _GLIBCXX_RESOLVE_LIB_DEFECTS
75 // 2103. propagate_on_container_move_assignment
76 typedef std::true_type propagate_on_container_move_assignment;
77 #endif
78
79 new_allocator() _GLIBCXX_USE_NOEXCEPT { }
80
81 new_allocator(const new_allocator&) _GLIBCXX_USE_NOEXCEPT { }
82
83 template<typename _Tp1>
84 new_allocator(const new_allocator<_Tp1>&) _GLIBCXX_USE_NOEXCEPT { }
85
86 ~new_allocator() _GLIBCXX_USE_NOEXCEPT { }
87
88 pointer
89 address(reference __x) const _GLIBCXX_NOEXCEPT
90 { return std::__addressof(__x); }
91
92 const_pointer
93 address(const_reference __x) const _GLIBCXX_NOEXCEPT
94 { return std::__addressof(__x); }
95
96 // NB: __n is permitted to be 0. The C++ standard says nothing
97 // about what the return value is when __n == 0.
98 pointer
99 allocate(size_type __n, const void* = static_cast<const void*>(0))
100 {
101 if (__n > this->max_size())
102 std::__throw_bad_alloc();
103
104 #if __cpp_aligned_new
105 if (alignof(_Tp) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
106 {
107 std::align_val_t __al = std::align_val_t(alignof(_Tp));
108 return static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), __al));
109 }
110 #endif
111 return static_cast<_Tp*>(::operator new(__n * sizeof(_Tp)));
112 }
113
114 // __p is not permitted to be a null pointer.
115 void
116 deallocate(pointer __p, size_type)
117 {
118 #if __cpp_aligned_new
119 if (alignof(_Tp) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)
120 {
121 ::operator delete(__p, std::align_val_t(alignof(_Tp)));
122 return;
123 }
124 #endif
125 ::operator delete(__p);
126 }
127
128 size_type
129 max_size() const _GLIBCXX_USE_NOEXCEPT
130 { return size_t(-1) / sizeof(_Tp); }
131
132 #if __cplusplus >= 201103L
133 template<typename _Up, typename... _Args>
134 void
135 construct(_Up* __p, _Args&&... __args)
136 { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
137
138 template<typename _Up>
139 void
140 destroy(_Up* __p) { __p->~_Up(); }
141 #else
142 // _GLIBCXX_RESOLVE_LIB_DEFECTS
143 // 402. wrong new expression in [some_] allocator::construct
144 void
145 construct(pointer __p, const _Tp& __val)
146 { ::new((void *)__p) _Tp(__val); }
147
148 void
149 destroy(pointer __p) { __p->~_Tp(); }
150 #endif
151 };
152
153 template<typename _Tp>
154 inline bool
155 operator==(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
156 { return true; }
157
158 template<typename _Tp>
159 inline bool
160 operator!=(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
161 { return false; }
162
163 _GLIBCXX_END_NAMESPACE_VERSION
164 } // namespace
165
166 #endif
167