29 #ifndef _SCOPED_ALLOCATOR 30 #define _SCOPED_ALLOCATOR 1 32 #pragma GCC system_header 34 #if __cplusplus < 201103L 42 namespace std _GLIBCXX_VISIBILITY(default)
44 _GLIBCXX_BEGIN_NAMESPACE_VERSION
46 template<
template<
typename>
class _Pred,
typename... _Allocs>
49 template<
template<
typename>
class _Pred,
typename _Alloc,
typename... _Allocs>
50 struct __any_of<_Pred, _Alloc, _Allocs...>
51 : __or_<_Pred<_Alloc>, __any_of<_Pred, _Allocs...>>
54 template<
template<
typename>
class _Pred,
typename _Alloc>
55 struct __any_of<_Pred, _Alloc>
64 template<
typename _Alloc>
65 struct __propagate_on_copy
66 : allocator_traits<_Alloc>::propagate_on_container_copy_assignment
68 template<
typename _Alloc>
69 struct __propagate_on_move
70 : allocator_traits<_Alloc>::propagate_on_container_move_assignment
72 template<
typename _Alloc>
73 struct __propagate_on_swap
74 : allocator_traits<_Alloc>::propagate_on_container_swap
77 template<
typename _Alloc>
78 using __outer_allocator_t
79 = decltype(std::declval<_Alloc>().outer_allocator());
81 template<
typename _Alloc,
typename =
void>
82 struct __outermost_type
85 static type& _S_outermost(_Alloc& __a) {
return __a; }
88 template<
typename _Alloc>
89 struct __outermost_type<_Alloc, __void_t<__outer_allocator_t<_Alloc>>>
91 typename remove_reference<__outer_allocator_t<_Alloc>>::type
94 using __base = __outermost_type<
95 typename remove_reference<__outer_allocator_t<_Alloc>>::type
98 static typename __base::type&
99 _S_outermost(_Alloc& __a)
100 {
return __base::_S_outermost(__a.outer_allocator()); }
103 template<
typename _Alloc>
104 inline typename __outermost_type<_Alloc>::type&
105 __outermost(_Alloc& __a)
106 {
return __outermost_type<_Alloc>::_S_outermost(__a); }
108 template<
typename _OuterAlloc,
typename... _InnerAllocs>
111 template<
typename...>
112 struct __inner_type_impl;
114 template<
typename _Outer>
115 struct __inner_type_impl<_Outer>
119 __inner_type_impl() =
default;
120 __inner_type_impl(
const __inner_type_impl&) =
default;
121 __inner_type_impl(__inner_type_impl&&) =
default;
122 __inner_type_impl& operator=(
const __inner_type_impl&) =
default;
123 __inner_type_impl& operator=(__inner_type_impl&&) =
default;
125 template<
typename _Alloc>
126 __inner_type_impl(
const __inner_type_impl<_Alloc>& __other)
129 template<
typename _Alloc>
130 __inner_type_impl(__inner_type_impl<_Alloc>&& __other)
134 _M_get(__type* __p) noexcept {
return *__p; }
137 _M_get(
const __type* __p)
const noexcept {
return *__p; }
140 _M_tie() const noexcept {
return tuple<>(); }
143 operator==(
const __inner_type_impl&)
const noexcept
147 template<
typename _Outer,
typename _InnerHead,
typename... _InnerTail>
148 struct __inner_type_impl<_Outer, _InnerHead, _InnerTail...>
152 __inner_type_impl() =
default;
153 __inner_type_impl(
const __inner_type_impl&) =
default;
154 __inner_type_impl(__inner_type_impl&&) =
default;
155 __inner_type_impl& operator=(
const __inner_type_impl&) =
default;
156 __inner_type_impl& operator=(__inner_type_impl&&) =
default;
158 template<
typename... _Allocs>
159 __inner_type_impl(
const __inner_type_impl<_Allocs...>& __other)
160 : _M_inner(__other._M_inner) { }
162 template<
typename... _Allocs>
163 __inner_type_impl(__inner_type_impl<_Allocs...>&& __other)
164 : _M_inner(
std::move(__other._M_inner)) { }
166 template<
typename... _Args>
168 __inner_type_impl(_Args&&... __args)
169 : _M_inner(
std::
forward<_Args>(__args)...) { }
172 _M_get(
void*) noexcept {
return _M_inner; }
175 _M_get(
const void*)
const noexcept {
return _M_inner; }
177 tuple<
const _InnerHead&,
const _InnerTail&...>
178 _M_tie() const noexcept
179 {
return _M_inner._M_tie(); }
182 operator==(
const __inner_type_impl& __other)
const noexcept
183 {
return _M_inner == __other._M_inner; }
186 template<
typename...>
friend class __inner_type_impl;
193 template<
typename _OuterAlloc,
typename... _InnerAllocs>
199 typedef __inner_type_impl<_OuterAlloc, _InnerAllocs...> __inner_type;
200 __inner_type _M_inner;
202 template<
typename _Outer,
typename... _Inner>
205 template<
typename...>
206 friend class __inner_type_impl;
208 tuple<
const _OuterAlloc&,
const _InnerAllocs&...>
209 _M_tie() const noexcept
212 template<
typename _Alloc>
216 template<
typename _Tp,
typename... _Args>
218 _M_construct(__uses_alloc0, _Tp* __p, _Args&&... __args)
221 _O_traits::construct(__outermost(*
this), __p,
222 std::forward<_Args>(__args)...);
225 typedef __uses_alloc1<typename __inner_type::__type> __uses_alloc1_;
226 typedef __uses_alloc2<typename __inner_type::__type> __uses_alloc2_;
228 template<
typename _Tp,
typename... _Args>
230 _M_construct(__uses_alloc1_, _Tp* __p, _Args&&... __args)
233 _O_traits::construct(__outermost(*
this), __p,
234 allocator_arg, inner_allocator(),
235 std::forward<_Args>(__args)...);
238 template<
typename _Tp,
typename... _Args>
240 _M_construct(__uses_alloc2_, _Tp* __p, _Args&&... __args)
243 _O_traits::construct(__outermost(*
this), __p,
244 std::forward<_Args>(__args)...,
248 template<
typename _Alloc>
250 _S_select_on_copy(
const _Alloc& __a)
253 return __a_traits::select_on_container_copy_construction(__a);
256 template<std::size_t... _Indices>
258 const _InnerAllocs&...> __refs,
259 _Index_tuple<_Indices...>)
260 : _OuterAlloc(_S_select_on_copy(
std::get<0>(__refs))),
261 _M_inner(_S_select_on_copy(
std::get<_Indices+1>(__refs))...)
265 template<
typename _Alloc>
266 using _Constructible =
typename enable_if<
267 is_constructible<_OuterAlloc, _Alloc>::value
271 typedef _OuterAlloc outer_allocator_type;
272 typedef typename __inner_type::__type inner_allocator_type;
282 typedef typename conditional<
283 __any_of<__propagate_on_copy, _OuterAlloc, _InnerAllocs...>::value,
285 typedef typename conditional<
286 __any_of<__propagate_on_move, _OuterAlloc, _InnerAllocs...>::value,
288 typedef typename conditional<
289 __any_of<__propagate_on_swap, _OuterAlloc, _InnerAllocs...>::value,
296 typename __traits::template rebind_alloc<_Tp>,
297 _InnerAllocs...> other;
302 template<
typename _Outer2,
typename = _Constructible<_Outer2>>
304 const _InnerAllocs&... __inner)
305 : _OuterAlloc(
std::
forward<_Outer2>(__outer)),
310 : _OuterAlloc(__other.outer_allocator()),
311 _M_inner(__other._M_inner)
315 : _OuterAlloc(
std::move(__other.outer_allocator())),
316 _M_inner(
std::move(__other._M_inner))
319 template<
typename _Outer2,
typename = _Constructible<const _Outer2&>>
322 : _OuterAlloc(__other.outer_allocator()),
323 _M_inner(__other._M_inner)
326 template<
typename _Outer2,
typename = _Constructible<_Outer2>>
329 : _OuterAlloc(
std::move(__other.outer_allocator())),
330 _M_inner(
std::move(__other._M_inner))
339 inner_allocator_type& inner_allocator() noexcept
340 {
return _M_inner._M_get(
this); }
342 const inner_allocator_type& inner_allocator() const noexcept
343 {
return _M_inner._M_get(
this); }
345 outer_allocator_type& outer_allocator() noexcept
346 {
return static_cast<_OuterAlloc&
>(*this); }
348 const outer_allocator_type& outer_allocator() const noexcept
349 {
return static_cast<const _OuterAlloc&
>(*this); }
351 pointer allocate(size_type __n)
352 {
return __traits::allocate(outer_allocator(), __n); }
354 pointer allocate(size_type __n, const_void_pointer __hint)
355 {
return __traits::allocate(outer_allocator(), __n, __hint); }
357 void deallocate(pointer __p, size_type __n)
358 {
return __traits::deallocate(outer_allocator(), __p, __n); }
360 size_type max_size()
const 361 {
return __traits::max_size(outer_allocator()); }
363 template<
typename _Tp,
typename... _Args>
364 void construct(_Tp* __p, _Args&&... __args)
366 auto& __inner = inner_allocator();
368 = __use_alloc<_Tp, inner_allocator_type, _Args...>(__inner);
369 _M_construct(__use_tag, __p, std::forward<_Args>(__args)...);
372 template<
typename _T1,
typename _T2,
typename... _Args1,
380 auto& __inner = inner_allocator();
382 = __use_alloc<_T1, inner_allocator_type, _Args1...>(__inner);
384 = __use_alloc<_T2, inner_allocator_type, _Args2...>(__inner);
387 _M_construct_p(__x_use_tag, __x),
388 _M_construct_p(__y_use_tag, __y));
391 template<
typename _T1,
typename _T2>
396 template<
typename _T1,
typename _T2,
typename _Up,
typename _Vp>
401 std::forward_as_tuple(std::forward<_Up>(__u)),
402 std::forward_as_tuple(std::forward<_Vp>(__v)));
405 template<
typename _T1,
typename _T2,
typename _Up,
typename _Vp>
410 std::forward_as_tuple(__x.
first),
411 std::forward_as_tuple(__x.
second));
414 template<
typename _T1,
typename _T2,
typename _Up,
typename _Vp>
419 std::forward_as_tuple(std::forward<_Up>(__x.
first)),
420 std::forward_as_tuple(std::forward<_Vp>(__x.
second)));
423 template<
typename _Tp>
424 void destroy(_Tp* __p)
427 _O_traits::destroy(__outermost(*
this), __p);
431 select_on_container_copy_construction()
const 433 typedef typename _Build_index_tuple<
sizeof...(_InnerAllocs)>::__type
438 template <
typename _OutA1,
typename _OutA2,
typename... _InA>
444 template<
typename _Tuple>
446 _M_construct_p(__uses_alloc0, _Tuple& __t)
447 {
return std::move(__t); }
449 template<
typename... _Args>
458 template<
typename... _Args>
467 template <
typename _OutA1,
typename _OutA2,
typename... _InA>
472 return __a.outer_allocator() == __b.outer_allocator()
473 && __a._M_inner == __b._M_inner;
476 template <
typename _OutA1,
typename _OutA2,
typename... _InA>
480 {
return !(__a == __b); }
484 _GLIBCXX_END_NAMESPACE_VERSION
489 #endif // _SCOPED_ALLOCATOR
Uniform interface to all allocator types.
__size_type size_type
The allocator's size type.
__void_pointer void_pointer
The allocator's void pointer type.
_T2 second
first is a copy of the first object
_Alloc::value_type value_type
The allocated type.
ISO C++ entities toplevel namespace is std.
_Siter_base< _Iterator >::iterator_type __base(_Iterator __it)
__difference_type difference_type
The allocator's difference type.
Primary class template, tuple.
constexpr piecewise_construct_t piecewise_construct
piecewise_construct
Struct holding two objects of arbitrary type.
__pointer pointer
The allocator's pointer type.
__const_pointer const_pointer
The allocator's const pointer type.
constexpr _Tp && forward(typename std::remove_reference< _Tp >::type &__t) noexcept
Forward an lvalue.
tuple< _Elements &... > tie(_Elements &... __args) noexcept
tie
_T1 first
second_type is the second bound type
integral_constant< bool, true > true_type
The type used as a compile-time boolean with true value.
constexpr auto tuple_cat(_Tpls &&... __tpls) -> typename __tuple_cat_result< _Tpls... >::__type
tuple_cat
__const_void_pointer const_void_pointer
The allocator's const void pointer type.