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// Allocator traits -*- C++ -*- |
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// Copyright (C) 2011-2015 Free Software Foundation, Inc. |
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// |
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// This file is part of the GNU ISO C++ Library. This library is free |
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// software; you can redistribute it and/or modify it under the |
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// terms of the GNU General Public License as published by the |
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// Free Software Foundation; either version 3, or (at your option) |
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// any later version. |
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// This library is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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// GNU General Public License for more details. |
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// Under Section 7 of GPL version 3, you are granted additional |
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// permissions described in the GCC Runtime Library Exception, version |
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// 3.1, as published by the Free Software Foundation. |
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// You should have received a copy of the GNU General Public License and |
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// a copy of the GCC Runtime Library Exception along with this program; |
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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// . |
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/** @file bits/alloc_traits.h |
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* This is an internal header file, included by other library headers. |
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* Do not attempt to use it directly. @headername{memory} |
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*/ |
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#ifndef _ALLOC_TRAITS_H |
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#define _ALLOC_TRAITS_H 1 |
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#if __cplusplus >= 201103L |
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#include |
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#include |
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#include |
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namespace std _GLIBCXX_VISIBILITY(default) |
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{ |
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_GLIBCXX_BEGIN_NAMESPACE_VERSION |
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template |
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class __alloctr_rebind_helper |
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{ |
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template |
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static constexpr true_type |
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_S_chk(typename _Alloc2::template rebind<_Tp2>::other*); |
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template |
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static constexpr false_type |
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_S_chk(...); |
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public: |
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using __type = decltype(_S_chk<_Alloc, _Tp>(nullptr)); |
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}; |
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template
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bool = __alloctr_rebind_helper<_Alloc, _Tp>::__type::value> |
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struct __alloctr_rebind; |
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template |
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struct __alloctr_rebind<_Alloc, _Tp, true> |
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{ |
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typedef typename _Alloc::template rebind<_Tp>::other __type; |
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}; |
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template class _Alloc, typename _Tp, |
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typename _Up, typename... _Args> |
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struct __alloctr_rebind<_Alloc<_Up, _Args...>, _Tp, false> |
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{ |
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typedef _Alloc<_Tp, _Args...> __type; |
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}; |
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template |
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using __alloc_rebind = typename __alloctr_rebind<_Alloc, _Tp>::__type; |
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/** |
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* @brief Uniform interface to all allocator types. |
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* @ingroup allocators |
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*/ |
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template |
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struct allocator_traits |
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{ |
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/// The allocator type |
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typedef _Alloc allocator_type; |
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/// The allocated type |
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typedef typename _Alloc::value_type value_type; |
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#define _GLIBCXX_ALLOC_TR_NESTED_TYPE(_NTYPE, _ALT) \ |
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private: \ |
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template \ |
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static typename _Tp::_NTYPE _S_##_NTYPE##_helper(_Tp*); \ |
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static _ALT _S_##_NTYPE##_helper(...); \ |
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typedef decltype(_S_##_NTYPE##_helper((_Alloc*)0)) __##_NTYPE; \ |
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public: |
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_GLIBCXX_ALLOC_TR_NESTED_TYPE(pointer, value_type*) |
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/** |
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* @brief The allocator's pointer type. |
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* |
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* @c Alloc::pointer if that type exists, otherwise @c value_type* |
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*/ |
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typedef __pointer pointer; |
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_GLIBCXX_ALLOC_TR_NESTED_TYPE(const_pointer, |
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typename pointer_traits::template rebind) |
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/** |
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* @brief The allocator's const pointer type. |
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* |
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* @c Alloc::const_pointer if that type exists, otherwise |
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* pointer_traits::rebind |
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*/ |
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typedef __const_pointer const_pointer; |
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_GLIBCXX_ALLOC_TR_NESTED_TYPE(void_pointer, |
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typename pointer_traits::template rebind) |
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/** |
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* @brief The allocator's void pointer type. |
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* |
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* @c Alloc::void_pointer if that type exists, otherwise |
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* pointer_traits::rebind |
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*/ |
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typedef __void_pointer void_pointer; |
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_GLIBCXX_ALLOC_TR_NESTED_TYPE(const_void_pointer, |
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typename pointer_traits::template rebind) |
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/** |
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* @brief The allocator's const void pointer type. |
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* |
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* @c Alloc::const_void_pointer if that type exists, otherwise |
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* pointer_traits::rebind |
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*/ |
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typedef __const_void_pointer const_void_pointer; |
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_GLIBCXX_ALLOC_TR_NESTED_TYPE(difference_type, |
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typename pointer_traits::difference_type) |
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/** |
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* @brief The allocator's difference type |
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* |
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* @c Alloc::difference_type if that type exists, otherwise |
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* pointer_traits::difference_type |
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*/ |
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typedef __difference_type difference_type; |
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_GLIBCXX_ALLOC_TR_NESTED_TYPE(size_type, |
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typename make_unsigned::type) |
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/** |
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* @brief The allocator's size type |
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* |
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* @c Alloc::size_type if that type exists, otherwise |
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* make_unsigned::type |
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*/ |
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typedef __size_type size_type; |
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_GLIBCXX_ALLOC_TR_NESTED_TYPE(propagate_on_container_copy_assignment, |
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false_type) |
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/** |
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* @brief How the allocator is propagated on copy assignment |
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* |
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* @c Alloc::propagate_on_container_copy_assignment if that type exists, |
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* otherwise @c false_type |
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*/ |
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typedef __propagate_on_container_copy_assignment |
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propagate_on_container_copy_assignment; |
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174
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_GLIBCXX_ALLOC_TR_NESTED_TYPE(propagate_on_container_move_assignment, |
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false_type) |
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/** |
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* @brief How the allocator is propagated on move assignment |
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* |
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* @c Alloc::propagate_on_container_move_assignment if that type exists, |
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* otherwise @c false_type |
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*/ |
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typedef __propagate_on_container_move_assignment |
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propagate_on_container_move_assignment; |
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_GLIBCXX_ALLOC_TR_NESTED_TYPE(propagate_on_container_swap, |
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false_type) |
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/** |
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* @brief How the allocator is propagated on swap |
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* |
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* @c Alloc::propagate_on_container_swap if that type exists, |
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* otherwise @c false_type |
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*/ |
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typedef __propagate_on_container_swap propagate_on_container_swap; |
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197
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#undef _GLIBCXX_ALLOC_TR_NESTED_TYPE |
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199
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template |
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using rebind_alloc = typename __alloctr_rebind<_Alloc, _Tp>::__type; |
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template |
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using rebind_traits = allocator_traits>; |
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204
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private: |
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template |
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struct __allocate_helper |
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{ |
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template
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209
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typename = decltype(std::declval<_Alloc3*>()->allocate( |
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std::declval(), |
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std::declval()))> |
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static true_type __test(int); |
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template |
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static false_type __test(...); |
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217
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using type = decltype(__test<_Alloc>(0)); |
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}; |
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220
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template |
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using __has_allocate = typename __allocate_helper<_Alloc2>::type; |
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223
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template
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224
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typename = _Require<__has_allocate<_Alloc2>>> |
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static pointer |
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_S_allocate(_Alloc2& __a, size_type __n, const_void_pointer __hint) |
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{ return __a.allocate(__n, __hint); } |
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229
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template
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230
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typename = _Require<__not_<__has_allocate<_Alloc2>>>> |
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static pointer |
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_S_allocate(_Alloc2& __a, size_type __n, _UnusedHint) |
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{ return __a.allocate(__n); } |
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235
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template |
236
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struct __construct_helper |
237
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{ |
238
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template
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239
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typename = decltype(std::declval<_Alloc2*>()->construct( |
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std::declval<_Tp*>(), std::declval<_Args>()...))> |
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static true_type __test(int); |
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template |
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static false_type __test(...); |
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using type = decltype(__test<_Alloc>(0)); |
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}; |
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template |
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using __has_construct |
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= typename __construct_helper<_Tp, _Args...>::type; |
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template |
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static _Require<__has_construct<_Tp, _Args...>> |
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_S_construct(_Alloc& __a, _Tp* __p, _Args&&... __args) |
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{ __a.construct(__p, std::forward<_Args>(__args)...); } |
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template |
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static |
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_Require<__and_<__not_<__has_construct<_Tp, _Args...>>, |
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is_constructible<_Tp, _Args...>>> |
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_S_construct(_Alloc&, _Tp* __p, _Args&&... __args) |
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{ ::new((void*)__p) _Tp(std::forward<_Args>(__args)...); } |
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template |
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struct __destroy_helper |
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{ |
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template
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typename = decltype(std::declval<_Alloc2*>()->destroy( |
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std::declval<_Tp*>()))> |
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static true_type __test(int); |
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template |
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static false_type __test(...); |
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using type = decltype(__test<_Alloc>(0)); |
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}; |
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template |
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using __has_destroy = typename __destroy_helper<_Tp>::type; |
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template |
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static _Require<__has_destroy<_Tp>> |
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_S_destroy(_Alloc& __a, _Tp* __p) |
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{ __a.destroy(__p); } |
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template |
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static _Require<__not_<__has_destroy<_Tp>>> |
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_S_destroy(_Alloc&, _Tp* __p) |
290
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{ __p->~_Tp(); } |
291
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292
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template |
293
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struct __maxsize_helper |
294
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{ |
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template
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typename = decltype(std::declval<_Alloc3*>()->max_size())> |
297
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static true_type __test(int); |
298
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299
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template |
300
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static false_type __test(...); |
301
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302
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using type = decltype(__test<_Alloc2>(0)); |
303
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}; |
304
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305
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template |
306
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using __has_max_size = typename __maxsize_helper<_Alloc2>::type; |
307
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308
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template
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309
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typename = _Require<__has_max_size<_Alloc2>>> |
310
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static size_type |
311
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_S_max_size(_Alloc2& __a, int) |
312
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{ return __a.max_size(); } |
313
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314
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template
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315
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typename = _Require<__not_<__has_max_size<_Alloc2>>>> |
316
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static size_type |
317
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_S_max_size(_Alloc2&, ...) |
318
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{ return __gnu_cxx::__numeric_traits::__max; } |
319
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320
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template |
321
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struct __select_helper |
322
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{ |
323
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template
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324
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= decltype(std::declval<_Alloc3*>() |
325
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->select_on_container_copy_construction())> |
326
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static true_type __test(int); |
327
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328
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template |
329
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static false_type __test(...); |
330
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331
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using type = decltype(__test<_Alloc2>(0)); |
332
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}; |
333
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334
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template |
335
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using __has_soccc = typename __select_helper<_Alloc2>::type; |
336
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337
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template
|
338
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typename = _Require<__has_soccc<_Alloc2>>> |
339
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static _Alloc2 |
340
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_S_select(_Alloc2& __a, int) |
341
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{ return __a.select_on_container_copy_construction(); } |
342
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343
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template
|
344
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typename = _Require<__not_<__has_soccc<_Alloc2>>>> |
345
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static _Alloc2 |
346
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_S_select(_Alloc2& __a, ...) |
347
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{ return __a; } |
348
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349
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public: |
350
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351
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/** |
352
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* @brief Allocate memory. |
353
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* @param __a An allocator. |
354
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* @param __n The number of objects to allocate space for. |
355
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* |
356
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|
* Calls @c a.allocate(n) |
357
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*/ |
358
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static pointer |
359
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|
allocate(_Alloc& __a, size_type __n) |
360
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|
{ return __a.allocate(__n); } |
361
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362
|
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|
/** |
363
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* @brief Allocate memory. |
364
|
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* @param __a An allocator. |
365
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|
* @param __n The number of objects to allocate space for. |
366
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* @param __hint Aid to locality. |
367
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|
* @return Memory of suitable size and alignment for @a n objects |
368
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* of type @c value_type |
369
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* |
370
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|
* Returns a.allocate(n, hint) if that expression is |
371
|
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|
* well-formed, otherwise returns @c a.allocate(n) |
372
|
|
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|
*/ |
373
|
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|
static pointer |
374
|
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|
|
allocate(_Alloc& __a, size_type __n, const_void_pointer __hint) |
375
|
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|
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|
{ return _S_allocate(__a, __n, __hint); } |
376
|
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377
|
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|
|
/** |
378
|
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|
* @brief Deallocate memory. |
379
|
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|
|
* @param __a An allocator. |
380
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|
|
* @param __p Pointer to the memory to deallocate. |
381
|
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|
|
* @param __n The number of objects space was allocated for. |
382
|
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|
* |
383
|
|
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|
|
* Calls a.deallocate(p, n) |
384
|
|
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|
|
|
|
*/ |
385
|
|
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|
|
|
|
static void deallocate(_Alloc& __a, pointer __p, size_type __n) |
386
|
|
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|
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|
|
{ __a.deallocate(__p, __n); } |
387
|
|
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|
388
|
|
|
|
|
|
|
/** |
389
|
|
|
|
|
|
|
* @brief Construct an object of type @a _Tp |
390
|
|
|
|
|
|
|
* @param __a An allocator. |
391
|
|
|
|
|
|
|
* @param __p Pointer to memory of suitable size and alignment for Tp |
392
|
|
|
|
|
|
|
* @param __args Constructor arguments. |
393
|
|
|
|
|
|
|
* |
394
|
|
|
|
|
|
|
* Calls __a.construct(__p, std::forward(__args)...) |
395
|
|
|
|
|
|
|
* if that expression is well-formed, otherwise uses placement-new |
396
|
|
|
|
|
|
|
* to construct an object of type @a _Tp at location @a __p from the |
397
|
|
|
|
|
|
|
* arguments @a __args... |
398
|
|
|
|
|
|
|
*/ |
399
|
|
|
|
|
|
|
template |
400
|
|
|
|
|
|
|
static auto construct(_Alloc& __a, _Tp* __p, _Args&&... __args) |
401
|
|
|
|
|
|
|
-> decltype(_S_construct(__a, __p, std::forward<_Args>(__args)...)) |
402
|
|
|
|
|
|
|
{ _S_construct(__a, __p, std::forward<_Args>(__args)...); } |
403
|
|
|
|
|
|
|
|
404
|
|
|
|
|
|
|
/** |
405
|
|
|
|
|
|
|
* @brief Destroy an object of type @a _Tp |
406
|
|
|
|
|
|
|
* @param __a An allocator. |
407
|
|
|
|
|
|
|
* @param __p Pointer to the object to destroy |
408
|
|
|
|
|
|
|
* |
409
|
|
|
|
|
|
|
* Calls @c __a.destroy(__p) if that expression is well-formed, |
410
|
|
|
|
|
|
|
* otherwise calls @c __p->~_Tp() |
411
|
|
|
|
|
|
|
*/ |
412
|
|
|
|
|
|
|
template |
413
|
|
|
|
|
|
|
static void destroy(_Alloc& __a, _Tp* __p) |
414
|
|
|
|
|
|
|
{ _S_destroy(__a, __p); } |
415
|
|
|
|
|
|
|
|
416
|
|
|
|
|
|
|
/** |
417
|
|
|
|
|
|
|
* @brief The maximum supported allocation size |
418
|
|
|
|
|
|
|
* @param __a An allocator. |
419
|
|
|
|
|
|
|
* @return @c __a.max_size() or @c numeric_limits::max() |
420
|
|
|
|
|
|
|
* |
421
|
|
|
|
|
|
|
* Returns @c __a.max_size() if that expression is well-formed, |
422
|
|
|
|
|
|
|
* otherwise returns @c numeric_limits::max() |
423
|
|
|
|
|
|
|
*/ |
424
|
|
|
|
|
|
|
static size_type max_size(const _Alloc& __a) noexcept |
425
|
|
|
|
|
|
|
{ return _S_max_size(__a, 0); } |
426
|
|
|
|
|
|
|
|
427
|
|
|
|
|
|
|
/** |
428
|
|
|
|
|
|
|
* @brief Obtain an allocator to use when copying a container. |
429
|
|
|
|
|
|
|
* @param __rhs An allocator. |
430
|
|
|
|
|
|
|
* @return @c __rhs.select_on_container_copy_construction() or @a __rhs |
431
|
|
|
|
|
|
|
* |
432
|
|
|
|
|
|
|
* Returns @c __rhs.select_on_container_copy_construction() if that |
433
|
|
|
|
|
|
|
* expression is well-formed, otherwise returns @a __rhs |
434
|
|
|
|
|
|
|
*/ |
435
|
|
|
|
|
|
|
static _Alloc |
436
|
|
|
|
|
|
|
select_on_container_copy_construction(const _Alloc& __rhs) |
437
|
|
|
|
|
|
|
{ return _S_select(__rhs, 0); } |
438
|
|
|
|
|
|
|
}; |
439
|
|
|
|
|
|
|
|
440
|
|
|
|
|
|
|
/// Partial specialization for std::allocator. |
441
|
|
|
|
|
|
|
template |
442
|
|
|
|
|
|
|
struct allocator_traits> |
443
|
|
|
|
|
|
|
{ |
444
|
|
|
|
|
|
|
/// The allocator type |
445
|
|
|
|
|
|
|
using allocator_type = allocator<_Tp>; |
446
|
|
|
|
|
|
|
/// The allocated type |
447
|
|
|
|
|
|
|
using value_type = _Tp; |
448
|
|
|
|
|
|
|
|
449
|
|
|
|
|
|
|
/// The allocator's pointer type. |
450
|
|
|
|
|
|
|
using pointer = _Tp*; |
451
|
|
|
|
|
|
|
|
452
|
|
|
|
|
|
|
/// The allocator's const pointer type. |
453
|
|
|
|
|
|
|
using const_pointer = const _Tp*; |
454
|
|
|
|
|
|
|
|
455
|
|
|
|
|
|
|
/// The allocator's void pointer type. |
456
|
|
|
|
|
|
|
using void_pointer = void*; |
457
|
|
|
|
|
|
|
|
458
|
|
|
|
|
|
|
/// The allocator's const void pointer type. |
459
|
|
|
|
|
|
|
using const_void_pointer = const void*; |
460
|
|
|
|
|
|
|
|
461
|
|
|
|
|
|
|
/// The allocator's difference type |
462
|
|
|
|
|
|
|
using difference_type = std::ptrdiff_t; |
463
|
|
|
|
|
|
|
|
464
|
|
|
|
|
|
|
/// The allocator's size type |
465
|
|
|
|
|
|
|
using size_type = std::size_t; |
466
|
|
|
|
|
|
|
|
467
|
|
|
|
|
|
|
/// How the allocator is propagated on copy assignment |
468
|
|
|
|
|
|
|
using propagate_on_container_copy_assignment = false_type; |
469
|
|
|
|
|
|
|
|
470
|
|
|
|
|
|
|
/// How the allocator is propagated on move assignment |
471
|
|
|
|
|
|
|
using propagate_on_container_move_assignment = true_type; |
472
|
|
|
|
|
|
|
|
473
|
|
|
|
|
|
|
/// How the allocator is propagated on swap |
474
|
|
|
|
|
|
|
using propagate_on_container_swap = false_type; |
475
|
|
|
|
|
|
|
|
476
|
|
|
|
|
|
|
template |
477
|
|
|
|
|
|
|
using rebind_alloc = allocator<_Up>; |
478
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479
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template |
480
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using rebind_traits = allocator_traits>; |
481
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482
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/** |
483
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* @brief Allocate memory. |
484
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* @param __a An allocator. |
485
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* @param __n The number of objects to allocate space for. |
486
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* |
487
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* Calls @c a.allocate(n) |
488
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*/ |
489
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static pointer |
490
|
18
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|
allocate(allocator_type& __a, size_type __n) |
491
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18
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{ return __a.allocate(__n); } |
492
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493
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/** |
494
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* @brief Allocate memory. |
495
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* @param __a An allocator. |
496
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* @param __n The number of objects to allocate space for. |
497
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* @param __hint Aid to locality. |
498
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* @return Memory of suitable size and alignment for @a n objects |
499
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* of type @c value_type |
500
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* |
501
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* Returns a.allocate(n, hint) |
502
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|
*/ |
503
|
|
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static pointer |
504
|
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|
allocate(allocator_type& __a, size_type __n, const_void_pointer __hint) |
505
|
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{ return __a.allocate(__n, __hint); } |
506
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507
|
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/** |
508
|
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* @brief Deallocate memory. |
509
|
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* @param __a An allocator. |
510
|
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|
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* @param __p Pointer to the memory to deallocate. |
511
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* @param __n The number of objects space was allocated for. |
512
|
|
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* |
513
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|
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|
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|
* Calls a.deallocate(p, n) |
514
|
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|
*/ |
515
|
|
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|
|
|
static void |
516
|
18
|
|
|
|
|
|
deallocate(allocator_type& __a, pointer __p, size_type __n) |
517
|
18
|
|
|
|
|
|
{ __a.deallocate(__p, __n); } |
518
|
|
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|
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519
|
|
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|
/** |
520
|
|
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|
|
|
|
* @brief Construct an object of type @a _Up |
521
|
|
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|
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|
* @param __a An allocator. |
522
|
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|
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|
* @param __p Pointer to memory of suitable size and alignment for Tp |
523
|
|
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|
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|
* @param __args Constructor arguments. |
524
|
|
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|
* |
525
|
|
|
|
|
|
|
* Calls __a.construct(__p, std::forward(__args)...) |
526
|
|
|
|
|
|
|
*/ |
527
|
|
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|
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|
|
template |
528
|
|
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|
|
|
static void |
529
|
18
|
|
|
|
|
|
construct(allocator_type& __a, _Up* __p, _Args&&... __args) |
530
|
18
|
|
|
|
|
|
{ __a.construct(__p, std::forward<_Args>(__args)...); } |
531
|
|
|
|
|
|
|
|
532
|
|
|
|
|
|
|
/** |
533
|
|
|
|
|
|
|
* @brief Destroy an object of type @a _Up |
534
|
|
|
|
|
|
|
* @param __a An allocator. |
535
|
|
|
|
|
|
|
* @param __p Pointer to the object to destroy |
536
|
|
|
|
|
|
|
* |
537
|
|
|
|
|
|
|
* Calls @c __a.destroy(__p). |
538
|
|
|
|
|
|
|
*/ |
539
|
|
|
|
|
|
|
template |
540
|
|
|
|
|
|
|
static void |
541
|
16
|
|
|
|
|
|
destroy(allocator_type& __a, _Up* __p) |
542
|
16
|
|
|
|
|
|
{ __a.destroy(__p); } |
543
|
|
|
|
|
|
|
|
544
|
|
|
|
|
|
|
/** |
545
|
|
|
|
|
|
|
* @brief The maximum supported allocation size |
546
|
|
|
|
|
|
|
* @param __a An allocator. |
547
|
|
|
|
|
|
|
* @return @c __a.max_size() |
548
|
|
|
|
|
|
|
*/ |
549
|
|
|
|
|
|
|
static size_type |
550
|
4
|
|
|
|
|
|
max_size(const allocator_type& __a) noexcept |
551
|
4
|
|
|
|
|
|
{ return __a.max_size(); } |
552
|
|
|
|
|
|
|
|
553
|
|
|
|
|
|
|
/** |
554
|
|
|
|
|
|
|
* @brief Obtain an allocator to use when copying a container. |
555
|
|
|
|
|
|
|
* @param __rhs An allocator. |
556
|
|
|
|
|
|
|
* @return @c __rhs |
557
|
|
|
|
|
|
|
*/ |
558
|
|
|
|
|
|
|
static allocator_type |
559
|
|
|
|
|
|
|
select_on_container_copy_construction(const allocator_type& __rhs) |
560
|
|
|
|
|
|
|
{ return __rhs; } |
561
|
|
|
|
|
|
|
}; |
562
|
|
|
|
|
|
|
|
563
|
|
|
|
|
|
|
|
564
|
|
|
|
|
|
|
template |
565
|
|
|
|
|
|
|
inline void |
566
|
|
|
|
|
|
|
__do_alloc_on_copy(_Alloc& __one, const _Alloc& __two, true_type) |
567
|
|
|
|
|
|
|
{ __one = __two; } |
568
|
|
|
|
|
|
|
|
569
|
|
|
|
|
|
|
template |
570
|
|
|
|
|
|
|
inline void |
571
|
|
|
|
|
|
|
__do_alloc_on_copy(_Alloc&, const _Alloc&, false_type) |
572
|
|
|
|
|
|
|
{ } |
573
|
|
|
|
|
|
|
|
574
|
|
|
|
|
|
|
template |
575
|
|
|
|
|
|
|
inline void __alloc_on_copy(_Alloc& __one, const _Alloc& __two) |
576
|
|
|
|
|
|
|
{ |
577
|
|
|
|
|
|
|
typedef allocator_traits<_Alloc> __traits; |
578
|
|
|
|
|
|
|
typedef typename __traits::propagate_on_container_copy_assignment __pocca; |
579
|
|
|
|
|
|
|
__do_alloc_on_copy(__one, __two, __pocca()); |
580
|
|
|
|
|
|
|
} |
581
|
|
|
|
|
|
|
|
582
|
|
|
|
|
|
|
template |
583
|
|
|
|
|
|
|
inline _Alloc __alloc_on_copy(const _Alloc& __a) |
584
|
|
|
|
|
|
|
{ |
585
|
|
|
|
|
|
|
typedef allocator_traits<_Alloc> __traits; |
586
|
|
|
|
|
|
|
return __traits::select_on_container_copy_construction(__a); |
587
|
|
|
|
|
|
|
} |
588
|
|
|
|
|
|
|
|
589
|
|
|
|
|
|
|
template |
590
|
|
|
|
|
|
|
inline void __do_alloc_on_move(_Alloc& __one, _Alloc& __two, true_type) |
591
|
|
|
|
|
|
|
{ __one = std::move(__two); } |
592
|
|
|
|
|
|
|
|
593
|
|
|
|
|
|
|
template |
594
|
|
|
|
|
|
|
inline void __do_alloc_on_move(_Alloc&, _Alloc&, false_type) |
595
|
|
|
|
|
|
|
{ } |
596
|
|
|
|
|
|
|
|
597
|
|
|
|
|
|
|
template |
598
|
|
|
|
|
|
|
inline void __alloc_on_move(_Alloc& __one, _Alloc& __two) |
599
|
|
|
|
|
|
|
{ |
600
|
|
|
|
|
|
|
typedef allocator_traits<_Alloc> __traits; |
601
|
|
|
|
|
|
|
typedef typename __traits::propagate_on_container_move_assignment __pocma; |
602
|
|
|
|
|
|
|
__do_alloc_on_move(__one, __two, __pocma()); |
603
|
|
|
|
|
|
|
} |
604
|
|
|
|
|
|
|
|
605
|
|
|
|
|
|
|
template |
606
|
|
|
|
|
|
|
inline void __do_alloc_on_swap(_Alloc& __one, _Alloc& __two, true_type) |
607
|
|
|
|
|
|
|
{ |
608
|
|
|
|
|
|
|
using std::swap; |
609
|
|
|
|
|
|
|
swap(__one, __two); |
610
|
|
|
|
|
|
|
} |
611
|
|
|
|
|
|
|
|
612
|
|
|
|
|
|
|
template |
613
|
|
|
|
|
|
|
inline void __do_alloc_on_swap(_Alloc&, _Alloc&, false_type) |
614
|
|
|
|
|
|
|
{ } |
615
|
|
|
|
|
|
|
|
616
|
|
|
|
|
|
|
template |
617
|
|
|
|
|
|
|
inline void __alloc_on_swap(_Alloc& __one, _Alloc& __two) |
618
|
|
|
|
|
|
|
{ |
619
|
|
|
|
|
|
|
typedef allocator_traits<_Alloc> __traits; |
620
|
|
|
|
|
|
|
typedef typename __traits::propagate_on_container_swap __pocs; |
621
|
|
|
|
|
|
|
__do_alloc_on_swap(__one, __two, __pocs()); |
622
|
|
|
|
|
|
|
} |
623
|
|
|
|
|
|
|
|
624
|
|
|
|
|
|
|
template |
625
|
|
|
|
|
|
|
class __is_copy_insertable_impl |
626
|
|
|
|
|
|
|
{ |
627
|
|
|
|
|
|
|
typedef allocator_traits<_Alloc> _Traits; |
628
|
|
|
|
|
|
|
|
629
|
|
|
|
|
|
|
template
|
630
|
|
|
|
|
|
|
= decltype(_Traits::construct(std::declval<_Alloc&>(), |
631
|
|
|
|
|
|
|
std::declval<_Up*>(), |
632
|
|
|
|
|
|
|
std::declval()))> |
633
|
|
|
|
|
|
|
static true_type |
634
|
|
|
|
|
|
|
_M_select(int); |
635
|
|
|
|
|
|
|
|
636
|
|
|
|
|
|
|
template |
637
|
|
|
|
|
|
|
static false_type |
638
|
|
|
|
|
|
|
_M_select(...); |
639
|
|
|
|
|
|
|
|
640
|
|
|
|
|
|
|
public: |
641
|
|
|
|
|
|
|
typedef decltype(_M_select(0)) type; |
642
|
|
|
|
|
|
|
}; |
643
|
|
|
|
|
|
|
|
644
|
|
|
|
|
|
|
// true if _Alloc::value_type is CopyInsertable into containers using _Alloc |
645
|
|
|
|
|
|
|
template |
646
|
|
|
|
|
|
|
struct __is_copy_insertable |
647
|
|
|
|
|
|
|
: __is_copy_insertable_impl<_Alloc>::type |
648
|
|
|
|
|
|
|
{ }; |
649
|
|
|
|
|
|
|
|
650
|
|
|
|
|
|
|
// std::allocator<_Tp> just requires CopyConstructible |
651
|
|
|
|
|
|
|
template |
652
|
|
|
|
|
|
|
struct __is_copy_insertable> |
653
|
|
|
|
|
|
|
: is_copy_constructible<_Tp> |
654
|
|
|
|
|
|
|
{ }; |
655
|
|
|
|
|
|
|
|
656
|
|
|
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION |
657
|
|
|
|
|
|
|
} // namespace std |
658
|
|
|
|
|
|
|
|
659
|
|
|
|
|
|
|
#endif |
660
|
|
|
|
|
|
|
#endif |