1 // Safe container implementation -*- C++ -*-
3 // Copyright (C) 2014-2018 Free Software Foundation, Inc.
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)
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.
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.
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/>.
25 /** @file debug/safe_container.h
26 * This file is a GNU debug extension to the Standard C++ Library.
29 #ifndef _GLIBCXX_DEBUG_SAFE_CONTAINER_H
30 #define _GLIBCXX_DEBUG_SAFE_CONTAINER_H 1
32 #include <ext/alloc_traits.h>
36 /// Safe class dealing with some allocator dependent operations.
37 template<typename _SafeContainer,
39 template<typename> class _SafeBase,
40 bool _IsCxx11AllocatorAware = true>
42 : public _SafeBase<_SafeContainer>
44 typedef _SafeBase<_SafeContainer> _Base;
47 _M_cont() _GLIBCXX_NOEXCEPT
48 { return *static_cast<_SafeContainer*>(this); }
52 _M_safe() _GLIBCXX_NOEXCEPT
55 #if __cplusplus >= 201103L
56 _Safe_container() = default;
57 _Safe_container(const _Safe_container&) = default;
58 _Safe_container(_Safe_container&&) = default;
60 _Safe_container(_Safe_container&& __x, const _Alloc& __a)
63 if (__x._M_cont().get_allocator() == __a)
66 __x._M_invalidate_all();
71 // Copy assignment invalidate all iterators.
73 operator=(const _Safe_container&) _GLIBCXX_NOEXCEPT
75 this->_M_invalidate_all();
79 #if __cplusplus >= 201103L
81 operator=(_Safe_container&& __x) noexcept
83 __glibcxx_check_self_move_assign(__x);
85 if (_IsCxx11AllocatorAware)
87 typedef __gnu_cxx::__alloc_traits<_Alloc> _Alloc_traits;
89 bool __xfer_memory = _Alloc_traits::_S_propagate_on_move_assign()
90 || _M_cont().get_allocator() == __x._M_cont().get_allocator();
94 this->_M_invalidate_all();
99 __x._M_invalidate_all();
104 _M_swap(_Safe_container& __x) noexcept
106 if (_IsCxx11AllocatorAware)
108 typedef __gnu_cxx::__alloc_traits<_Alloc> _Alloc_traits;
110 if (!_Alloc_traits::_S_propagate_on_swap())
111 __glibcxx_check_equal_allocs(this->_M_cont()._M_base(),
112 __x._M_cont()._M_base());
120 } // namespace __gnu_debug