xref: /freebsd/contrib/llvm-project/libcxx/include/memory (revision 0b57cec536236d46e3dba9bd041533462f33dbb7)
1*0b57cec5SDimitry Andric// -*- C++ -*-
2*0b57cec5SDimitry Andric//===-------------------------- memory ------------------------------------===//
3*0b57cec5SDimitry Andric//
4*0b57cec5SDimitry Andric// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5*0b57cec5SDimitry Andric// See https://llvm.org/LICENSE.txt for license information.
6*0b57cec5SDimitry Andric// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7*0b57cec5SDimitry Andric//
8*0b57cec5SDimitry Andric//===----------------------------------------------------------------------===//
9*0b57cec5SDimitry Andric
10*0b57cec5SDimitry Andric#ifndef _LIBCPP_MEMORY
11*0b57cec5SDimitry Andric#define _LIBCPP_MEMORY
12*0b57cec5SDimitry Andric
13*0b57cec5SDimitry Andric/*
14*0b57cec5SDimitry Andric    memory synopsis
15*0b57cec5SDimitry Andric
16*0b57cec5SDimitry Andricnamespace std
17*0b57cec5SDimitry Andric{
18*0b57cec5SDimitry Andric
19*0b57cec5SDimitry Andricstruct allocator_arg_t { };
20*0b57cec5SDimitry Andricinline constexpr allocator_arg_t allocator_arg = allocator_arg_t();
21*0b57cec5SDimitry Andric
22*0b57cec5SDimitry Andrictemplate <class T, class Alloc> struct uses_allocator;
23*0b57cec5SDimitry Andric
24*0b57cec5SDimitry Andrictemplate <class Ptr>
25*0b57cec5SDimitry Andricstruct pointer_traits
26*0b57cec5SDimitry Andric{
27*0b57cec5SDimitry Andric    typedef Ptr pointer;
28*0b57cec5SDimitry Andric    typedef <details> element_type;
29*0b57cec5SDimitry Andric    typedef <details> difference_type;
30*0b57cec5SDimitry Andric
31*0b57cec5SDimitry Andric    template <class U> using rebind = <details>;
32*0b57cec5SDimitry Andric
33*0b57cec5SDimitry Andric    static pointer pointer_to(<details>);
34*0b57cec5SDimitry Andric};
35*0b57cec5SDimitry Andric
36*0b57cec5SDimitry Andrictemplate <class T>
37*0b57cec5SDimitry Andricstruct pointer_traits<T*>
38*0b57cec5SDimitry Andric{
39*0b57cec5SDimitry Andric    typedef T* pointer;
40*0b57cec5SDimitry Andric    typedef T element_type;
41*0b57cec5SDimitry Andric    typedef ptrdiff_t difference_type;
42*0b57cec5SDimitry Andric
43*0b57cec5SDimitry Andric    template <class U> using rebind = U*;
44*0b57cec5SDimitry Andric
45*0b57cec5SDimitry Andric    static pointer pointer_to(<details>) noexcept; // constexpr in C++20
46*0b57cec5SDimitry Andric};
47*0b57cec5SDimitry Andric
48*0b57cec5SDimitry Andrictemplate <class T> constexpr T* to_address(T* p) noexcept; // C++20
49*0b57cec5SDimitry Andrictemplate <class Ptr> auto to_address(const Ptr& p) noexcept; // C++20
50*0b57cec5SDimitry Andric
51*0b57cec5SDimitry Andrictemplate <class Alloc>
52*0b57cec5SDimitry Andricstruct allocator_traits
53*0b57cec5SDimitry Andric{
54*0b57cec5SDimitry Andric    typedef Alloc                        allocator_type;
55*0b57cec5SDimitry Andric    typedef typename allocator_type::value_type
56*0b57cec5SDimitry Andric                                         value_type;
57*0b57cec5SDimitry Andric
58*0b57cec5SDimitry Andric    typedef Alloc::pointer | value_type* pointer;
59*0b57cec5SDimitry Andric    typedef Alloc::const_pointer
60*0b57cec5SDimitry Andric          | pointer_traits<pointer>::rebind<const value_type>
61*0b57cec5SDimitry Andric                                         const_pointer;
62*0b57cec5SDimitry Andric    typedef Alloc::void_pointer
63*0b57cec5SDimitry Andric          | pointer_traits<pointer>::rebind<void>
64*0b57cec5SDimitry Andric                                         void_pointer;
65*0b57cec5SDimitry Andric    typedef Alloc::const_void_pointer
66*0b57cec5SDimitry Andric          | pointer_traits<pointer>::rebind<const void>
67*0b57cec5SDimitry Andric                                         const_void_pointer;
68*0b57cec5SDimitry Andric    typedef Alloc::difference_type
69*0b57cec5SDimitry Andric          | pointer_traits<pointer>::difference_type
70*0b57cec5SDimitry Andric                                         difference_type;
71*0b57cec5SDimitry Andric    typedef Alloc::size_type
72*0b57cec5SDimitry Andric          | make_unsigned<difference_type>::type
73*0b57cec5SDimitry Andric                                         size_type;
74*0b57cec5SDimitry Andric    typedef Alloc::propagate_on_container_copy_assignment
75*0b57cec5SDimitry Andric          | false_type                   propagate_on_container_copy_assignment;
76*0b57cec5SDimitry Andric    typedef Alloc::propagate_on_container_move_assignment
77*0b57cec5SDimitry Andric          | false_type                   propagate_on_container_move_assignment;
78*0b57cec5SDimitry Andric    typedef Alloc::propagate_on_container_swap
79*0b57cec5SDimitry Andric          | false_type                   propagate_on_container_swap;
80*0b57cec5SDimitry Andric    typedef Alloc::is_always_equal
81*0b57cec5SDimitry Andric          | is_empty                     is_always_equal;
82*0b57cec5SDimitry Andric
83*0b57cec5SDimitry Andric    template <class T> using rebind_alloc  = Alloc::rebind<U>::other | Alloc<T, Args...>;
84*0b57cec5SDimitry Andric    template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>;
85*0b57cec5SDimitry Andric
86*0b57cec5SDimitry Andric    static pointer allocate(allocator_type& a, size_type n);                          // [[nodiscard]] in C++20
87*0b57cec5SDimitry Andric    static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint); // [[nodiscard]] in C++20
88*0b57cec5SDimitry Andric
89*0b57cec5SDimitry Andric    static void deallocate(allocator_type& a, pointer p, size_type n) noexcept;
90*0b57cec5SDimitry Andric
91*0b57cec5SDimitry Andric    template <class T, class... Args>
92*0b57cec5SDimitry Andric        static void construct(allocator_type& a, T* p, Args&&... args);
93*0b57cec5SDimitry Andric
94*0b57cec5SDimitry Andric    template <class T>
95*0b57cec5SDimitry Andric        static void destroy(allocator_type& a, T* p);
96*0b57cec5SDimitry Andric
97*0b57cec5SDimitry Andric    static size_type max_size(const allocator_type& a); // noexcept in C++14
98*0b57cec5SDimitry Andric
99*0b57cec5SDimitry Andric    static allocator_type
100*0b57cec5SDimitry Andric        select_on_container_copy_construction(const allocator_type& a);
101*0b57cec5SDimitry Andric};
102*0b57cec5SDimitry Andric
103*0b57cec5SDimitry Andrictemplate <>
104*0b57cec5SDimitry Andricclass allocator<void>
105*0b57cec5SDimitry Andric{
106*0b57cec5SDimitry Andricpublic:
107*0b57cec5SDimitry Andric    typedef void*                                 pointer;
108*0b57cec5SDimitry Andric    typedef const void*                           const_pointer;
109*0b57cec5SDimitry Andric    typedef void                                  value_type;
110*0b57cec5SDimitry Andric
111*0b57cec5SDimitry Andric    template <class _Up> struct rebind {typedef allocator<_Up> other;};
112*0b57cec5SDimitry Andric};
113*0b57cec5SDimitry Andric
114*0b57cec5SDimitry Andrictemplate <class T>
115*0b57cec5SDimitry Andricclass allocator
116*0b57cec5SDimitry Andric{
117*0b57cec5SDimitry Andricpublic:
118*0b57cec5SDimitry Andric    typedef size_t                                size_type;
119*0b57cec5SDimitry Andric    typedef ptrdiff_t                             difference_type;
120*0b57cec5SDimitry Andric    typedef T*                                    pointer;
121*0b57cec5SDimitry Andric    typedef const T*                              const_pointer;
122*0b57cec5SDimitry Andric    typedef typename add_lvalue_reference<T>::type       reference;
123*0b57cec5SDimitry Andric    typedef typename add_lvalue_reference<const T>::type const_reference;
124*0b57cec5SDimitry Andric    typedef T                                     value_type;
125*0b57cec5SDimitry Andric
126*0b57cec5SDimitry Andric    template <class U> struct rebind {typedef allocator<U> other;};
127*0b57cec5SDimitry Andric
128*0b57cec5SDimitry Andric    constexpr allocator() noexcept;                      // constexpr in C++20
129*0b57cec5SDimitry Andric    constexpr allocator(const allocator&) noexcept;      // constexpr in C++20
130*0b57cec5SDimitry Andric    template <class U>
131*0b57cec5SDimitry Andric      constexpr allocator(const allocator<U>&) noexcept; // constexpr in C++20
132*0b57cec5SDimitry Andric    ~allocator();
133*0b57cec5SDimitry Andric    pointer address(reference x) const noexcept;
134*0b57cec5SDimitry Andric    const_pointer address(const_reference x) const noexcept;
135*0b57cec5SDimitry Andric    pointer allocate(size_type, allocator<void>::const_pointer hint = 0);
136*0b57cec5SDimitry Andric    void deallocate(pointer p, size_type n) noexcept;
137*0b57cec5SDimitry Andric    size_type max_size() const noexcept;
138*0b57cec5SDimitry Andric    template<class U, class... Args>
139*0b57cec5SDimitry Andric        void construct(U* p, Args&&... args);
140*0b57cec5SDimitry Andric    template <class U>
141*0b57cec5SDimitry Andric        void destroy(U* p);
142*0b57cec5SDimitry Andric};
143*0b57cec5SDimitry Andric
144*0b57cec5SDimitry Andrictemplate <class T, class U>
145*0b57cec5SDimitry Andricbool operator==(const allocator<T>&, const allocator<U>&) noexcept;
146*0b57cec5SDimitry Andric
147*0b57cec5SDimitry Andrictemplate <class T, class U>
148*0b57cec5SDimitry Andricbool operator!=(const allocator<T>&, const allocator<U>&) noexcept;
149*0b57cec5SDimitry Andric
150*0b57cec5SDimitry Andrictemplate <class OutputIterator, class T>
151*0b57cec5SDimitry Andricclass raw_storage_iterator
152*0b57cec5SDimitry Andric    : public iterator<output_iterator_tag,
153*0b57cec5SDimitry Andric                      T,                               // purposefully not C++03
154*0b57cec5SDimitry Andric                      ptrdiff_t,                       // purposefully not C++03
155*0b57cec5SDimitry Andric                      T*,                              // purposefully not C++03
156*0b57cec5SDimitry Andric                      raw_storage_iterator&>           // purposefully not C++03
157*0b57cec5SDimitry Andric{
158*0b57cec5SDimitry Andricpublic:
159*0b57cec5SDimitry Andric    explicit raw_storage_iterator(OutputIterator x);
160*0b57cec5SDimitry Andric    raw_storage_iterator& operator*();
161*0b57cec5SDimitry Andric    raw_storage_iterator& operator=(const T& element);
162*0b57cec5SDimitry Andric    raw_storage_iterator& operator++();
163*0b57cec5SDimitry Andric    raw_storage_iterator  operator++(int);
164*0b57cec5SDimitry Andric};
165*0b57cec5SDimitry Andric
166*0b57cec5SDimitry Andrictemplate <class T> pair<T*,ptrdiff_t> get_temporary_buffer(ptrdiff_t n) noexcept;
167*0b57cec5SDimitry Andrictemplate <class T> void               return_temporary_buffer(T* p) noexcept;
168*0b57cec5SDimitry Andric
169*0b57cec5SDimitry Andrictemplate <class T> T* addressof(T& r) noexcept;
170*0b57cec5SDimitry Andrictemplate <class T> T* addressof(const T&& r) noexcept = delete;
171*0b57cec5SDimitry Andric
172*0b57cec5SDimitry Andrictemplate <class InputIterator, class ForwardIterator>
173*0b57cec5SDimitry AndricForwardIterator
174*0b57cec5SDimitry Andricuninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result);
175*0b57cec5SDimitry Andric
176*0b57cec5SDimitry Andrictemplate <class InputIterator, class Size, class ForwardIterator>
177*0b57cec5SDimitry AndricForwardIterator
178*0b57cec5SDimitry Andricuninitialized_copy_n(InputIterator first, Size n, ForwardIterator result);
179*0b57cec5SDimitry Andric
180*0b57cec5SDimitry Andrictemplate <class ForwardIterator, class T>
181*0b57cec5SDimitry Andricvoid uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x);
182*0b57cec5SDimitry Andric
183*0b57cec5SDimitry Andrictemplate <class ForwardIterator, class Size, class T>
184*0b57cec5SDimitry AndricForwardIterator
185*0b57cec5SDimitry Andricuninitialized_fill_n(ForwardIterator first, Size n, const T& x);
186*0b57cec5SDimitry Andric
187*0b57cec5SDimitry Andrictemplate <class T>
188*0b57cec5SDimitry Andricvoid destroy_at(T* location);
189*0b57cec5SDimitry Andric
190*0b57cec5SDimitry Andrictemplate <class ForwardIterator>
191*0b57cec5SDimitry Andric void destroy(ForwardIterator first, ForwardIterator last);
192*0b57cec5SDimitry Andric
193*0b57cec5SDimitry Andrictemplate <class ForwardIterator, class Size>
194*0b57cec5SDimitry Andric ForwardIterator destroy_n(ForwardIterator first, Size n);
195*0b57cec5SDimitry Andric
196*0b57cec5SDimitry Andrictemplate <class InputIterator, class ForwardIterator>
197*0b57cec5SDimitry Andric ForwardIterator uninitialized_move(InputIterator first, InputIterator last, ForwardIterator result);
198*0b57cec5SDimitry Andric
199*0b57cec5SDimitry Andrictemplate <class InputIterator, class Size, class ForwardIterator>
200*0b57cec5SDimitry Andric pair<InputIterator,ForwardIterator> uninitialized_move_n(InputIterator first, Size n, ForwardIterator result);
201*0b57cec5SDimitry Andric
202*0b57cec5SDimitry Andrictemplate <class ForwardIterator>
203*0b57cec5SDimitry Andric void uninitialized_value_construct(ForwardIterator first, ForwardIterator last);
204*0b57cec5SDimitry Andric
205*0b57cec5SDimitry Andrictemplate <class ForwardIterator, class Size>
206*0b57cec5SDimitry Andric ForwardIterator uninitialized_value_construct_n(ForwardIterator first, Size n);
207*0b57cec5SDimitry Andric
208*0b57cec5SDimitry Andrictemplate <class ForwardIterator>
209*0b57cec5SDimitry Andric void uninitialized_default_construct(ForwardIterator first, ForwardIterator last);
210*0b57cec5SDimitry Andric
211*0b57cec5SDimitry Andrictemplate <class ForwardIterator, class Size>
212*0b57cec5SDimitry Andric ForwardIterator uninitialized_default_construct_n(ForwardIterator first, Size n);
213*0b57cec5SDimitry Andric
214*0b57cec5SDimitry Andrictemplate <class Y> struct auto_ptr_ref {};      // deprecated in C++11, removed in C++17
215*0b57cec5SDimitry Andric
216*0b57cec5SDimitry Andrictemplate<class X>
217*0b57cec5SDimitry Andricclass auto_ptr                                  // deprecated in C++11, removed in C++17
218*0b57cec5SDimitry Andric{
219*0b57cec5SDimitry Andricpublic:
220*0b57cec5SDimitry Andric    typedef X element_type;
221*0b57cec5SDimitry Andric
222*0b57cec5SDimitry Andric    explicit auto_ptr(X* p =0) throw();
223*0b57cec5SDimitry Andric    auto_ptr(auto_ptr&) throw();
224*0b57cec5SDimitry Andric    template<class Y> auto_ptr(auto_ptr<Y>&) throw();
225*0b57cec5SDimitry Andric    auto_ptr& operator=(auto_ptr&) throw();
226*0b57cec5SDimitry Andric    template<class Y> auto_ptr& operator=(auto_ptr<Y>&) throw();
227*0b57cec5SDimitry Andric    auto_ptr& operator=(auto_ptr_ref<X> r) throw();
228*0b57cec5SDimitry Andric    ~auto_ptr() throw();
229*0b57cec5SDimitry Andric
230*0b57cec5SDimitry Andric    typename add_lvalue_reference<X>::type operator*() const throw();
231*0b57cec5SDimitry Andric    X* operator->() const throw();
232*0b57cec5SDimitry Andric    X* get() const throw();
233*0b57cec5SDimitry Andric    X* release() throw();
234*0b57cec5SDimitry Andric    void reset(X* p =0) throw();
235*0b57cec5SDimitry Andric
236*0b57cec5SDimitry Andric    auto_ptr(auto_ptr_ref<X>) throw();
237*0b57cec5SDimitry Andric    template<class Y> operator auto_ptr_ref<Y>() throw();
238*0b57cec5SDimitry Andric    template<class Y> operator auto_ptr<Y>() throw();
239*0b57cec5SDimitry Andric};
240*0b57cec5SDimitry Andric
241*0b57cec5SDimitry Andrictemplate <class T>
242*0b57cec5SDimitry Andricstruct default_delete
243*0b57cec5SDimitry Andric{
244*0b57cec5SDimitry Andric    constexpr default_delete() noexcept = default;
245*0b57cec5SDimitry Andric    template <class U> default_delete(const default_delete<U>&) noexcept;
246*0b57cec5SDimitry Andric
247*0b57cec5SDimitry Andric    void operator()(T*) const noexcept;
248*0b57cec5SDimitry Andric};
249*0b57cec5SDimitry Andric
250*0b57cec5SDimitry Andrictemplate <class T>
251*0b57cec5SDimitry Andricstruct default_delete<T[]>
252*0b57cec5SDimitry Andric{
253*0b57cec5SDimitry Andric    constexpr default_delete() noexcept = default;
254*0b57cec5SDimitry Andric    void operator()(T*) const noexcept;
255*0b57cec5SDimitry Andric    template <class U> void operator()(U*) const = delete;
256*0b57cec5SDimitry Andric};
257*0b57cec5SDimitry Andric
258*0b57cec5SDimitry Andrictemplate <class T, class D = default_delete<T>>
259*0b57cec5SDimitry Andricclass unique_ptr
260*0b57cec5SDimitry Andric{
261*0b57cec5SDimitry Andricpublic:
262*0b57cec5SDimitry Andric    typedef see below pointer;
263*0b57cec5SDimitry Andric    typedef T element_type;
264*0b57cec5SDimitry Andric    typedef D deleter_type;
265*0b57cec5SDimitry Andric
266*0b57cec5SDimitry Andric    // constructors
267*0b57cec5SDimitry Andric    constexpr unique_ptr() noexcept;
268*0b57cec5SDimitry Andric    explicit unique_ptr(pointer p) noexcept;
269*0b57cec5SDimitry Andric    unique_ptr(pointer p, see below d1) noexcept;
270*0b57cec5SDimitry Andric    unique_ptr(pointer p, see below d2) noexcept;
271*0b57cec5SDimitry Andric    unique_ptr(unique_ptr&& u) noexcept;
272*0b57cec5SDimitry Andric    unique_ptr(nullptr_t) noexcept : unique_ptr() { }
273*0b57cec5SDimitry Andric    template <class U, class E>
274*0b57cec5SDimitry Andric        unique_ptr(unique_ptr<U, E>&& u) noexcept;
275*0b57cec5SDimitry Andric    template <class U>
276*0b57cec5SDimitry Andric        unique_ptr(auto_ptr<U>&& u) noexcept;       // removed in C++17
277*0b57cec5SDimitry Andric
278*0b57cec5SDimitry Andric    // destructor
279*0b57cec5SDimitry Andric    ~unique_ptr();
280*0b57cec5SDimitry Andric
281*0b57cec5SDimitry Andric    // assignment
282*0b57cec5SDimitry Andric    unique_ptr& operator=(unique_ptr&& u) noexcept;
283*0b57cec5SDimitry Andric    template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept;
284*0b57cec5SDimitry Andric    unique_ptr& operator=(nullptr_t) noexcept;
285*0b57cec5SDimitry Andric
286*0b57cec5SDimitry Andric    // observers
287*0b57cec5SDimitry Andric    typename add_lvalue_reference<T>::type operator*() const;
288*0b57cec5SDimitry Andric    pointer operator->() const noexcept;
289*0b57cec5SDimitry Andric    pointer get() const noexcept;
290*0b57cec5SDimitry Andric    deleter_type& get_deleter() noexcept;
291*0b57cec5SDimitry Andric    const deleter_type& get_deleter() const noexcept;
292*0b57cec5SDimitry Andric    explicit operator bool() const noexcept;
293*0b57cec5SDimitry Andric
294*0b57cec5SDimitry Andric    // modifiers
295*0b57cec5SDimitry Andric    pointer release() noexcept;
296*0b57cec5SDimitry Andric    void reset(pointer p = pointer()) noexcept;
297*0b57cec5SDimitry Andric    void swap(unique_ptr& u) noexcept;
298*0b57cec5SDimitry Andric};
299*0b57cec5SDimitry Andric
300*0b57cec5SDimitry Andrictemplate <class T, class D>
301*0b57cec5SDimitry Andricclass unique_ptr<T[], D>
302*0b57cec5SDimitry Andric{
303*0b57cec5SDimitry Andricpublic:
304*0b57cec5SDimitry Andric    typedef implementation-defined pointer;
305*0b57cec5SDimitry Andric    typedef T element_type;
306*0b57cec5SDimitry Andric    typedef D deleter_type;
307*0b57cec5SDimitry Andric
308*0b57cec5SDimitry Andric    // constructors
309*0b57cec5SDimitry Andric    constexpr unique_ptr() noexcept;
310*0b57cec5SDimitry Andric    explicit unique_ptr(pointer p) noexcept;
311*0b57cec5SDimitry Andric    unique_ptr(pointer p, see below d) noexcept;
312*0b57cec5SDimitry Andric    unique_ptr(pointer p, see below d) noexcept;
313*0b57cec5SDimitry Andric    unique_ptr(unique_ptr&& u) noexcept;
314*0b57cec5SDimitry Andric    unique_ptr(nullptr_t) noexcept : unique_ptr() { }
315*0b57cec5SDimitry Andric
316*0b57cec5SDimitry Andric    // destructor
317*0b57cec5SDimitry Andric    ~unique_ptr();
318*0b57cec5SDimitry Andric
319*0b57cec5SDimitry Andric    // assignment
320*0b57cec5SDimitry Andric    unique_ptr& operator=(unique_ptr&& u) noexcept;
321*0b57cec5SDimitry Andric    unique_ptr& operator=(nullptr_t) noexcept;
322*0b57cec5SDimitry Andric
323*0b57cec5SDimitry Andric    // observers
324*0b57cec5SDimitry Andric    T& operator[](size_t i) const;
325*0b57cec5SDimitry Andric    pointer get() const noexcept;
326*0b57cec5SDimitry Andric    deleter_type& get_deleter() noexcept;
327*0b57cec5SDimitry Andric    const deleter_type& get_deleter() const noexcept;
328*0b57cec5SDimitry Andric    explicit operator bool() const noexcept;
329*0b57cec5SDimitry Andric
330*0b57cec5SDimitry Andric    // modifiers
331*0b57cec5SDimitry Andric    pointer release() noexcept;
332*0b57cec5SDimitry Andric    void reset(pointer p = pointer()) noexcept;
333*0b57cec5SDimitry Andric    void reset(nullptr_t) noexcept;
334*0b57cec5SDimitry Andric    template <class U> void reset(U) = delete;
335*0b57cec5SDimitry Andric    void swap(unique_ptr& u) noexcept;
336*0b57cec5SDimitry Andric};
337*0b57cec5SDimitry Andric
338*0b57cec5SDimitry Andrictemplate <class T, class D>
339*0b57cec5SDimitry Andric    void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept;
340*0b57cec5SDimitry Andric
341*0b57cec5SDimitry Andrictemplate <class T1, class D1, class T2, class D2>
342*0b57cec5SDimitry Andric    bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
343*0b57cec5SDimitry Andrictemplate <class T1, class D1, class T2, class D2>
344*0b57cec5SDimitry Andric    bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
345*0b57cec5SDimitry Andrictemplate <class T1, class D1, class T2, class D2>
346*0b57cec5SDimitry Andric    bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
347*0b57cec5SDimitry Andrictemplate <class T1, class D1, class T2, class D2>
348*0b57cec5SDimitry Andric    bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
349*0b57cec5SDimitry Andrictemplate <class T1, class D1, class T2, class D2>
350*0b57cec5SDimitry Andric    bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
351*0b57cec5SDimitry Andrictemplate <class T1, class D1, class T2, class D2>
352*0b57cec5SDimitry Andric    bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
353*0b57cec5SDimitry Andric
354*0b57cec5SDimitry Andrictemplate <class T, class D>
355*0b57cec5SDimitry Andric    bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept;
356*0b57cec5SDimitry Andrictemplate <class T, class D>
357*0b57cec5SDimitry Andric    bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept;
358*0b57cec5SDimitry Andrictemplate <class T, class D>
359*0b57cec5SDimitry Andric    bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept;
360*0b57cec5SDimitry Andrictemplate <class T, class D>
361*0b57cec5SDimitry Andric    bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept;
362*0b57cec5SDimitry Andric
363*0b57cec5SDimitry Andrictemplate <class T, class D>
364*0b57cec5SDimitry Andric    bool operator<(const unique_ptr<T, D>& x, nullptr_t);
365*0b57cec5SDimitry Andrictemplate <class T, class D>
366*0b57cec5SDimitry Andric    bool operator<(nullptr_t, const unique_ptr<T, D>& y);
367*0b57cec5SDimitry Andrictemplate <class T, class D>
368*0b57cec5SDimitry Andric    bool operator<=(const unique_ptr<T, D>& x, nullptr_t);
369*0b57cec5SDimitry Andrictemplate <class T, class D>
370*0b57cec5SDimitry Andric    bool operator<=(nullptr_t, const unique_ptr<T, D>& y);
371*0b57cec5SDimitry Andrictemplate <class T, class D>
372*0b57cec5SDimitry Andric    bool operator>(const unique_ptr<T, D>& x, nullptr_t);
373*0b57cec5SDimitry Andrictemplate <class T, class D>
374*0b57cec5SDimitry Andric    bool operator>(nullptr_t, const unique_ptr<T, D>& y);
375*0b57cec5SDimitry Andrictemplate <class T, class D>
376*0b57cec5SDimitry Andric    bool operator>=(const unique_ptr<T, D>& x, nullptr_t);
377*0b57cec5SDimitry Andrictemplate <class T, class D>
378*0b57cec5SDimitry Andric    bool operator>=(nullptr_t, const unique_ptr<T, D>& y);
379*0b57cec5SDimitry Andric
380*0b57cec5SDimitry Andricclass bad_weak_ptr
381*0b57cec5SDimitry Andric    : public std::exception
382*0b57cec5SDimitry Andric{
383*0b57cec5SDimitry Andric    bad_weak_ptr() noexcept;
384*0b57cec5SDimitry Andric};
385*0b57cec5SDimitry Andric
386*0b57cec5SDimitry Andrictemplate<class T, class... Args> unique_ptr<T> make_unique(Args&&... args);     // C++14
387*0b57cec5SDimitry Andrictemplate<class T>                unique_ptr<T> make_unique(size_t n);           // C++14
388*0b57cec5SDimitry Andrictemplate<class T, class... Args> unspecified   make_unique(Args&&...) = delete; // C++14, T == U[N]
389*0b57cec5SDimitry Andric
390*0b57cec5SDimitry Andrictemplate<class E, class T, class Y, class D>
391*0b57cec5SDimitry Andric    basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, unique_ptr<Y, D> const& p);
392*0b57cec5SDimitry Andric
393*0b57cec5SDimitry Andrictemplate<class T>
394*0b57cec5SDimitry Andricclass shared_ptr
395*0b57cec5SDimitry Andric{
396*0b57cec5SDimitry Andricpublic:
397*0b57cec5SDimitry Andric    typedef T element_type;
398*0b57cec5SDimitry Andric    typedef weak_ptr<T> weak_type; // C++17
399*0b57cec5SDimitry Andric
400*0b57cec5SDimitry Andric    // constructors:
401*0b57cec5SDimitry Andric    constexpr shared_ptr() noexcept;
402*0b57cec5SDimitry Andric    template<class Y> explicit shared_ptr(Y* p);
403*0b57cec5SDimitry Andric    template<class Y, class D> shared_ptr(Y* p, D d);
404*0b57cec5SDimitry Andric    template<class Y, class D, class A> shared_ptr(Y* p, D d, A a);
405*0b57cec5SDimitry Andric    template <class D> shared_ptr(nullptr_t p, D d);
406*0b57cec5SDimitry Andric    template <class D, class A> shared_ptr(nullptr_t p, D d, A a);
407*0b57cec5SDimitry Andric    template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p) noexcept;
408*0b57cec5SDimitry Andric    shared_ptr(const shared_ptr& r) noexcept;
409*0b57cec5SDimitry Andric    template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept;
410*0b57cec5SDimitry Andric    shared_ptr(shared_ptr&& r) noexcept;
411*0b57cec5SDimitry Andric    template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept;
412*0b57cec5SDimitry Andric    template<class Y> explicit shared_ptr(const weak_ptr<Y>& r);
413*0b57cec5SDimitry Andric    template<class Y> shared_ptr(auto_ptr<Y>&& r);          // removed in C++17
414*0b57cec5SDimitry Andric    template <class Y, class D> shared_ptr(unique_ptr<Y, D>&& r);
415*0b57cec5SDimitry Andric    shared_ptr(nullptr_t) : shared_ptr() { }
416*0b57cec5SDimitry Andric
417*0b57cec5SDimitry Andric    // destructor:
418*0b57cec5SDimitry Andric    ~shared_ptr();
419*0b57cec5SDimitry Andric
420*0b57cec5SDimitry Andric    // assignment:
421*0b57cec5SDimitry Andric    shared_ptr& operator=(const shared_ptr& r) noexcept;
422*0b57cec5SDimitry Andric    template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept;
423*0b57cec5SDimitry Andric    shared_ptr& operator=(shared_ptr&& r) noexcept;
424*0b57cec5SDimitry Andric    template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r);
425*0b57cec5SDimitry Andric    template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); // removed in C++17
426*0b57cec5SDimitry Andric    template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r);
427*0b57cec5SDimitry Andric
428*0b57cec5SDimitry Andric    // modifiers:
429*0b57cec5SDimitry Andric    void swap(shared_ptr& r) noexcept;
430*0b57cec5SDimitry Andric    void reset() noexcept;
431*0b57cec5SDimitry Andric    template<class Y> void reset(Y* p);
432*0b57cec5SDimitry Andric    template<class Y, class D> void reset(Y* p, D d);
433*0b57cec5SDimitry Andric    template<class Y, class D, class A> void reset(Y* p, D d, A a);
434*0b57cec5SDimitry Andric
435*0b57cec5SDimitry Andric    // observers:
436*0b57cec5SDimitry Andric    T* get() const noexcept;
437*0b57cec5SDimitry Andric    T& operator*() const noexcept;
438*0b57cec5SDimitry Andric    T* operator->() const noexcept;
439*0b57cec5SDimitry Andric    long use_count() const noexcept;
440*0b57cec5SDimitry Andric    bool unique() const noexcept;
441*0b57cec5SDimitry Andric    explicit operator bool() const noexcept;
442*0b57cec5SDimitry Andric    template<class U> bool owner_before(shared_ptr<U> const& b) const noexcept;
443*0b57cec5SDimitry Andric    template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept;
444*0b57cec5SDimitry Andric};
445*0b57cec5SDimitry Andric
446*0b57cec5SDimitry Andric// shared_ptr comparisons:
447*0b57cec5SDimitry Andrictemplate<class T, class U>
448*0b57cec5SDimitry Andric    bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
449*0b57cec5SDimitry Andrictemplate<class T, class U>
450*0b57cec5SDimitry Andric    bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
451*0b57cec5SDimitry Andrictemplate<class T, class U>
452*0b57cec5SDimitry Andric    bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
453*0b57cec5SDimitry Andrictemplate<class T, class U>
454*0b57cec5SDimitry Andric    bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
455*0b57cec5SDimitry Andrictemplate<class T, class U>
456*0b57cec5SDimitry Andric    bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
457*0b57cec5SDimitry Andrictemplate<class T, class U>
458*0b57cec5SDimitry Andric    bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
459*0b57cec5SDimitry Andric
460*0b57cec5SDimitry Andrictemplate <class T>
461*0b57cec5SDimitry Andric    bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept;
462*0b57cec5SDimitry Andrictemplate <class T>
463*0b57cec5SDimitry Andric    bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept;
464*0b57cec5SDimitry Andrictemplate <class T>
465*0b57cec5SDimitry Andric    bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept;
466*0b57cec5SDimitry Andrictemplate <class T>
467*0b57cec5SDimitry Andric    bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept;
468*0b57cec5SDimitry Andrictemplate <class T>
469*0b57cec5SDimitry Andric    bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept;
470*0b57cec5SDimitry Andrictemplate <class T>
471*0b57cec5SDimitry Andricbool operator<(nullptr_t, const shared_ptr<T>& y) noexcept;
472*0b57cec5SDimitry Andrictemplate <class T>
473*0b57cec5SDimitry Andric    bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept;
474*0b57cec5SDimitry Andrictemplate <class T>
475*0b57cec5SDimitry Andric    bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept;
476*0b57cec5SDimitry Andrictemplate <class T>
477*0b57cec5SDimitry Andric    bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept;
478*0b57cec5SDimitry Andrictemplate <class T>
479*0b57cec5SDimitry Andric    bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept;
480*0b57cec5SDimitry Andrictemplate <class T>
481*0b57cec5SDimitry Andric    bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept;
482*0b57cec5SDimitry Andrictemplate <class T>
483*0b57cec5SDimitry Andric    bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept;
484*0b57cec5SDimitry Andric
485*0b57cec5SDimitry Andric// shared_ptr specialized algorithms:
486*0b57cec5SDimitry Andrictemplate<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept;
487*0b57cec5SDimitry Andric
488*0b57cec5SDimitry Andric// shared_ptr casts:
489*0b57cec5SDimitry Andrictemplate<class T, class U>
490*0b57cec5SDimitry Andric    shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept;
491*0b57cec5SDimitry Andrictemplate<class T, class U>
492*0b57cec5SDimitry Andric    shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept;
493*0b57cec5SDimitry Andrictemplate<class T, class U>
494*0b57cec5SDimitry Andric    shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept;
495*0b57cec5SDimitry Andric
496*0b57cec5SDimitry Andric// shared_ptr I/O:
497*0b57cec5SDimitry Andrictemplate<class E, class T, class Y>
498*0b57cec5SDimitry Andric    basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, shared_ptr<Y> const& p);
499*0b57cec5SDimitry Andric
500*0b57cec5SDimitry Andric// shared_ptr get_deleter:
501*0b57cec5SDimitry Andrictemplate<class D, class T> D* get_deleter(shared_ptr<T> const& p) noexcept;
502*0b57cec5SDimitry Andric
503*0b57cec5SDimitry Andrictemplate<class T, class... Args>
504*0b57cec5SDimitry Andric    shared_ptr<T> make_shared(Args&&... args);
505*0b57cec5SDimitry Andrictemplate<class T, class A, class... Args>
506*0b57cec5SDimitry Andric    shared_ptr<T> allocate_shared(const A& a, Args&&... args);
507*0b57cec5SDimitry Andric
508*0b57cec5SDimitry Andrictemplate<class T>
509*0b57cec5SDimitry Andricclass weak_ptr
510*0b57cec5SDimitry Andric{
511*0b57cec5SDimitry Andricpublic:
512*0b57cec5SDimitry Andric    typedef T element_type;
513*0b57cec5SDimitry Andric
514*0b57cec5SDimitry Andric    // constructors
515*0b57cec5SDimitry Andric    constexpr weak_ptr() noexcept;
516*0b57cec5SDimitry Andric    template<class Y> weak_ptr(shared_ptr<Y> const& r) noexcept;
517*0b57cec5SDimitry Andric    weak_ptr(weak_ptr const& r) noexcept;
518*0b57cec5SDimitry Andric    template<class Y> weak_ptr(weak_ptr<Y> const& r) noexcept;
519*0b57cec5SDimitry Andric    weak_ptr(weak_ptr&& r) noexcept;                      // C++14
520*0b57cec5SDimitry Andric    template<class Y> weak_ptr(weak_ptr<Y>&& r) noexcept; // C++14
521*0b57cec5SDimitry Andric
522*0b57cec5SDimitry Andric    // destructor
523*0b57cec5SDimitry Andric    ~weak_ptr();
524*0b57cec5SDimitry Andric
525*0b57cec5SDimitry Andric    // assignment
526*0b57cec5SDimitry Andric    weak_ptr& operator=(weak_ptr const& r) noexcept;
527*0b57cec5SDimitry Andric    template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r) noexcept;
528*0b57cec5SDimitry Andric    template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r) noexcept;
529*0b57cec5SDimitry Andric    weak_ptr& operator=(weak_ptr&& r) noexcept;                      // C++14
530*0b57cec5SDimitry Andric    template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r) noexcept; // C++14
531*0b57cec5SDimitry Andric
532*0b57cec5SDimitry Andric    // modifiers
533*0b57cec5SDimitry Andric    void swap(weak_ptr& r) noexcept;
534*0b57cec5SDimitry Andric    void reset() noexcept;
535*0b57cec5SDimitry Andric
536*0b57cec5SDimitry Andric    // observers
537*0b57cec5SDimitry Andric    long use_count() const noexcept;
538*0b57cec5SDimitry Andric    bool expired() const noexcept;
539*0b57cec5SDimitry Andric    shared_ptr<T> lock() const noexcept;
540*0b57cec5SDimitry Andric    template<class U> bool owner_before(shared_ptr<U> const& b) const noexcept;
541*0b57cec5SDimitry Andric    template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept;
542*0b57cec5SDimitry Andric};
543*0b57cec5SDimitry Andric
544*0b57cec5SDimitry Andric// weak_ptr specialized algorithms:
545*0b57cec5SDimitry Andrictemplate<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept;
546*0b57cec5SDimitry Andric
547*0b57cec5SDimitry Andric// class owner_less:
548*0b57cec5SDimitry Andrictemplate<class T> struct owner_less;
549*0b57cec5SDimitry Andric
550*0b57cec5SDimitry Andrictemplate<class T>
551*0b57cec5SDimitry Andricstruct owner_less<shared_ptr<T> >
552*0b57cec5SDimitry Andric    : binary_function<shared_ptr<T>, shared_ptr<T>, bool>
553*0b57cec5SDimitry Andric{
554*0b57cec5SDimitry Andric    typedef bool result_type;
555*0b57cec5SDimitry Andric    bool operator()(shared_ptr<T> const&, shared_ptr<T> const&) const noexcept;
556*0b57cec5SDimitry Andric    bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept;
557*0b57cec5SDimitry Andric    bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept;
558*0b57cec5SDimitry Andric};
559*0b57cec5SDimitry Andric
560*0b57cec5SDimitry Andrictemplate<class T>
561*0b57cec5SDimitry Andricstruct owner_less<weak_ptr<T> >
562*0b57cec5SDimitry Andric    : binary_function<weak_ptr<T>, weak_ptr<T>, bool>
563*0b57cec5SDimitry Andric{
564*0b57cec5SDimitry Andric    typedef bool result_type;
565*0b57cec5SDimitry Andric    bool operator()(weak_ptr<T> const&, weak_ptr<T> const&) const noexcept;
566*0b57cec5SDimitry Andric    bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept;
567*0b57cec5SDimitry Andric    bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept;
568*0b57cec5SDimitry Andric};
569*0b57cec5SDimitry Andric
570*0b57cec5SDimitry Andrictemplate <>  // Added in C++14
571*0b57cec5SDimitry Andricstruct owner_less<void>
572*0b57cec5SDimitry Andric{
573*0b57cec5SDimitry Andric    template <class _Tp, class _Up>
574*0b57cec5SDimitry Andric    bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept;
575*0b57cec5SDimitry Andric    template <class _Tp, class _Up>
576*0b57cec5SDimitry Andric    bool operator()( shared_ptr<_Tp> const& __x,   weak_ptr<_Up> const& __y) const noexcept;
577*0b57cec5SDimitry Andric    template <class _Tp, class _Up>
578*0b57cec5SDimitry Andric    bool operator()(   weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept;
579*0b57cec5SDimitry Andric    template <class _Tp, class _Up>
580*0b57cec5SDimitry Andric    bool operator()(   weak_ptr<_Tp> const& __x,   weak_ptr<_Up> const& __y) const noexcept;
581*0b57cec5SDimitry Andric
582*0b57cec5SDimitry Andric    typedef void is_transparent;
583*0b57cec5SDimitry Andric};
584*0b57cec5SDimitry Andric
585*0b57cec5SDimitry Andrictemplate<class T>
586*0b57cec5SDimitry Andricclass enable_shared_from_this
587*0b57cec5SDimitry Andric{
588*0b57cec5SDimitry Andricprotected:
589*0b57cec5SDimitry Andric    constexpr enable_shared_from_this() noexcept;
590*0b57cec5SDimitry Andric    enable_shared_from_this(enable_shared_from_this const&) noexcept;
591*0b57cec5SDimitry Andric    enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept;
592*0b57cec5SDimitry Andric    ~enable_shared_from_this();
593*0b57cec5SDimitry Andricpublic:
594*0b57cec5SDimitry Andric    shared_ptr<T> shared_from_this();
595*0b57cec5SDimitry Andric    shared_ptr<T const> shared_from_this() const;
596*0b57cec5SDimitry Andric};
597*0b57cec5SDimitry Andric
598*0b57cec5SDimitry Andrictemplate<class T>
599*0b57cec5SDimitry Andric    bool atomic_is_lock_free(const shared_ptr<T>* p);
600*0b57cec5SDimitry Andrictemplate<class T>
601*0b57cec5SDimitry Andric    shared_ptr<T> atomic_load(const shared_ptr<T>* p);
602*0b57cec5SDimitry Andrictemplate<class T>
603*0b57cec5SDimitry Andric    shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo);
604*0b57cec5SDimitry Andrictemplate<class T>
605*0b57cec5SDimitry Andric    void atomic_store(shared_ptr<T>* p, shared_ptr<T> r);
606*0b57cec5SDimitry Andrictemplate<class T>
607*0b57cec5SDimitry Andric    void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo);
608*0b57cec5SDimitry Andrictemplate<class T>
609*0b57cec5SDimitry Andric    shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r);
610*0b57cec5SDimitry Andrictemplate<class T>
611*0b57cec5SDimitry Andric    shared_ptr<T>
612*0b57cec5SDimitry Andric    atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo);
613*0b57cec5SDimitry Andrictemplate<class T>
614*0b57cec5SDimitry Andric    bool
615*0b57cec5SDimitry Andric    atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w);
616*0b57cec5SDimitry Andrictemplate<class T>
617*0b57cec5SDimitry Andric    bool
618*0b57cec5SDimitry Andric    atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w);
619*0b57cec5SDimitry Andrictemplate<class T>
620*0b57cec5SDimitry Andric    bool
621*0b57cec5SDimitry Andric    atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v,
622*0b57cec5SDimitry Andric                                          shared_ptr<T> w, memory_order success,
623*0b57cec5SDimitry Andric                                          memory_order failure);
624*0b57cec5SDimitry Andrictemplate<class T>
625*0b57cec5SDimitry Andric    bool
626*0b57cec5SDimitry Andric    atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v,
627*0b57cec5SDimitry Andric                                            shared_ptr<T> w, memory_order success,
628*0b57cec5SDimitry Andric                                            memory_order failure);
629*0b57cec5SDimitry Andric// Hash support
630*0b57cec5SDimitry Andrictemplate <class T> struct hash;
631*0b57cec5SDimitry Andrictemplate <class T, class D> struct hash<unique_ptr<T, D> >;
632*0b57cec5SDimitry Andrictemplate <class T> struct hash<shared_ptr<T> >;
633*0b57cec5SDimitry Andric
634*0b57cec5SDimitry Andrictemplate <class T, class Alloc>
635*0b57cec5SDimitry Andric  inline constexpr bool uses_allocator_v = uses_allocator<T, Alloc>::value;
636*0b57cec5SDimitry Andric
637*0b57cec5SDimitry Andric// Pointer safety
638*0b57cec5SDimitry Andricenum class pointer_safety { relaxed, preferred, strict };
639*0b57cec5SDimitry Andricvoid declare_reachable(void *p);
640*0b57cec5SDimitry Andrictemplate <class T> T *undeclare_reachable(T *p);
641*0b57cec5SDimitry Andricvoid declare_no_pointers(char *p, size_t n);
642*0b57cec5SDimitry Andricvoid undeclare_no_pointers(char *p, size_t n);
643*0b57cec5SDimitry Andricpointer_safety get_pointer_safety() noexcept;
644*0b57cec5SDimitry Andric
645*0b57cec5SDimitry Andricvoid* align(size_t alignment, size_t size, void*& ptr, size_t& space);
646*0b57cec5SDimitry Andric
647*0b57cec5SDimitry Andric}  // std
648*0b57cec5SDimitry Andric
649*0b57cec5SDimitry Andric*/
650*0b57cec5SDimitry Andric
651*0b57cec5SDimitry Andric#include <__config>
652*0b57cec5SDimitry Andric#include <type_traits>
653*0b57cec5SDimitry Andric#include <typeinfo>
654*0b57cec5SDimitry Andric#include <cstddef>
655*0b57cec5SDimitry Andric#include <cstdint>
656*0b57cec5SDimitry Andric#include <new>
657*0b57cec5SDimitry Andric#include <utility>
658*0b57cec5SDimitry Andric#include <limits>
659*0b57cec5SDimitry Andric#include <iterator>
660*0b57cec5SDimitry Andric#include <__functional_base>
661*0b57cec5SDimitry Andric#include <iosfwd>
662*0b57cec5SDimitry Andric#include <tuple>
663*0b57cec5SDimitry Andric#include <stdexcept>
664*0b57cec5SDimitry Andric#include <cstring>
665*0b57cec5SDimitry Andric#include <cassert>
666*0b57cec5SDimitry Andric#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
667*0b57cec5SDimitry Andric#  include <atomic>
668*0b57cec5SDimitry Andric#endif
669*0b57cec5SDimitry Andric#include <version>
670*0b57cec5SDimitry Andric
671*0b57cec5SDimitry Andric#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
672*0b57cec5SDimitry Andric#pragma GCC system_header
673*0b57cec5SDimitry Andric#endif
674*0b57cec5SDimitry Andric
675*0b57cec5SDimitry Andric_LIBCPP_PUSH_MACROS
676*0b57cec5SDimitry Andric#include <__undef_macros>
677*0b57cec5SDimitry Andric
678*0b57cec5SDimitry Andric
679*0b57cec5SDimitry Andric_LIBCPP_BEGIN_NAMESPACE_STD
680*0b57cec5SDimitry Andric
681*0b57cec5SDimitry Andrictemplate <class _ValueType>
682*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
683*0b57cec5SDimitry Andric_ValueType __libcpp_relaxed_load(_ValueType const* __value) {
684*0b57cec5SDimitry Andric#if !defined(_LIBCPP_HAS_NO_THREADS) && \
685*0b57cec5SDimitry Andric    defined(__ATOMIC_RELAXED) &&        \
686*0b57cec5SDimitry Andric    (__has_builtin(__atomic_load_n) || defined(_LIBCPP_COMPILER_GCC))
687*0b57cec5SDimitry Andric    return __atomic_load_n(__value, __ATOMIC_RELAXED);
688*0b57cec5SDimitry Andric#else
689*0b57cec5SDimitry Andric    return *__value;
690*0b57cec5SDimitry Andric#endif
691*0b57cec5SDimitry Andric}
692*0b57cec5SDimitry Andric
693*0b57cec5SDimitry Andrictemplate <class _ValueType>
694*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
695*0b57cec5SDimitry Andric_ValueType __libcpp_acquire_load(_ValueType const* __value) {
696*0b57cec5SDimitry Andric#if !defined(_LIBCPP_HAS_NO_THREADS) && \
697*0b57cec5SDimitry Andric    defined(__ATOMIC_ACQUIRE) &&        \
698*0b57cec5SDimitry Andric    (__has_builtin(__atomic_load_n) || defined(_LIBCPP_COMPILER_GCC))
699*0b57cec5SDimitry Andric    return __atomic_load_n(__value, __ATOMIC_ACQUIRE);
700*0b57cec5SDimitry Andric#else
701*0b57cec5SDimitry Andric    return *__value;
702*0b57cec5SDimitry Andric#endif
703*0b57cec5SDimitry Andric}
704*0b57cec5SDimitry Andric
705*0b57cec5SDimitry Andric// addressof moved to <type_traits>
706*0b57cec5SDimitry Andric
707*0b57cec5SDimitry Andrictemplate <class _Tp> class allocator;
708*0b57cec5SDimitry Andric
709*0b57cec5SDimitry Andrictemplate <>
710*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS allocator<void>
711*0b57cec5SDimitry Andric{
712*0b57cec5SDimitry Andricpublic:
713*0b57cec5SDimitry Andric    typedef void*             pointer;
714*0b57cec5SDimitry Andric    typedef const void*       const_pointer;
715*0b57cec5SDimitry Andric    typedef void              value_type;
716*0b57cec5SDimitry Andric
717*0b57cec5SDimitry Andric    template <class _Up> struct rebind {typedef allocator<_Up> other;};
718*0b57cec5SDimitry Andric};
719*0b57cec5SDimitry Andric
720*0b57cec5SDimitry Andrictemplate <>
721*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS allocator<const void>
722*0b57cec5SDimitry Andric{
723*0b57cec5SDimitry Andricpublic:
724*0b57cec5SDimitry Andric    typedef const void*       pointer;
725*0b57cec5SDimitry Andric    typedef const void*       const_pointer;
726*0b57cec5SDimitry Andric    typedef const void        value_type;
727*0b57cec5SDimitry Andric
728*0b57cec5SDimitry Andric    template <class _Up> struct rebind {typedef allocator<_Up> other;};
729*0b57cec5SDimitry Andric};
730*0b57cec5SDimitry Andric
731*0b57cec5SDimitry Andric// pointer_traits
732*0b57cec5SDimitry Andric
733*0b57cec5SDimitry Andrictemplate <class _Tp, class = void>
734*0b57cec5SDimitry Andricstruct __has_element_type : false_type {};
735*0b57cec5SDimitry Andric
736*0b57cec5SDimitry Andrictemplate <class _Tp>
737*0b57cec5SDimitry Andricstruct __has_element_type<_Tp,
738*0b57cec5SDimitry Andric              typename __void_t<typename _Tp::element_type>::type> : true_type {};
739*0b57cec5SDimitry Andric
740*0b57cec5SDimitry Andrictemplate <class _Ptr, bool = __has_element_type<_Ptr>::value>
741*0b57cec5SDimitry Andricstruct __pointer_traits_element_type;
742*0b57cec5SDimitry Andric
743*0b57cec5SDimitry Andrictemplate <class _Ptr>
744*0b57cec5SDimitry Andricstruct __pointer_traits_element_type<_Ptr, true>
745*0b57cec5SDimitry Andric{
746*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Ptr::element_type type;
747*0b57cec5SDimitry Andric};
748*0b57cec5SDimitry Andric
749*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_VARIADICS
750*0b57cec5SDimitry Andric
751*0b57cec5SDimitry Andrictemplate <template <class, class...> class _Sp, class _Tp, class ..._Args>
752*0b57cec5SDimitry Andricstruct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true>
753*0b57cec5SDimitry Andric{
754*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Sp<_Tp, _Args...>::element_type type;
755*0b57cec5SDimitry Andric};
756*0b57cec5SDimitry Andric
757*0b57cec5SDimitry Andrictemplate <template <class, class...> class _Sp, class _Tp, class ..._Args>
758*0b57cec5SDimitry Andricstruct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false>
759*0b57cec5SDimitry Andric{
760*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE _Tp type;
761*0b57cec5SDimitry Andric};
762*0b57cec5SDimitry Andric
763*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_VARIADICS
764*0b57cec5SDimitry Andric
765*0b57cec5SDimitry Andrictemplate <template <class> class _Sp, class _Tp>
766*0b57cec5SDimitry Andricstruct __pointer_traits_element_type<_Sp<_Tp>, true>
767*0b57cec5SDimitry Andric{
768*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp>::element_type type;
769*0b57cec5SDimitry Andric};
770*0b57cec5SDimitry Andric
771*0b57cec5SDimitry Andrictemplate <template <class> class _Sp, class _Tp>
772*0b57cec5SDimitry Andricstruct __pointer_traits_element_type<_Sp<_Tp>, false>
773*0b57cec5SDimitry Andric{
774*0b57cec5SDimitry Andric    typedef _Tp type;
775*0b57cec5SDimitry Andric};
776*0b57cec5SDimitry Andric
777*0b57cec5SDimitry Andrictemplate <template <class, class> class _Sp, class _Tp, class _A0>
778*0b57cec5SDimitry Andricstruct __pointer_traits_element_type<_Sp<_Tp, _A0>, true>
779*0b57cec5SDimitry Andric{
780*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp, _A0>::element_type type;
781*0b57cec5SDimitry Andric};
782*0b57cec5SDimitry Andric
783*0b57cec5SDimitry Andrictemplate <template <class, class> class _Sp, class _Tp, class _A0>
784*0b57cec5SDimitry Andricstruct __pointer_traits_element_type<_Sp<_Tp, _A0>, false>
785*0b57cec5SDimitry Andric{
786*0b57cec5SDimitry Andric    typedef _Tp type;
787*0b57cec5SDimitry Andric};
788*0b57cec5SDimitry Andric
789*0b57cec5SDimitry Andrictemplate <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1>
790*0b57cec5SDimitry Andricstruct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true>
791*0b57cec5SDimitry Andric{
792*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp, _A0, _A1>::element_type type;
793*0b57cec5SDimitry Andric};
794*0b57cec5SDimitry Andric
795*0b57cec5SDimitry Andrictemplate <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1>
796*0b57cec5SDimitry Andricstruct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false>
797*0b57cec5SDimitry Andric{
798*0b57cec5SDimitry Andric    typedef _Tp type;
799*0b57cec5SDimitry Andric};
800*0b57cec5SDimitry Andric
801*0b57cec5SDimitry Andrictemplate <template <class, class, class, class> class _Sp, class _Tp, class _A0,
802*0b57cec5SDimitry Andric                                                           class _A1, class _A2>
803*0b57cec5SDimitry Andricstruct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true>
804*0b57cec5SDimitry Andric{
805*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type;
806*0b57cec5SDimitry Andric};
807*0b57cec5SDimitry Andric
808*0b57cec5SDimitry Andrictemplate <template <class, class, class, class> class _Sp, class _Tp, class _A0,
809*0b57cec5SDimitry Andric                                                           class _A1, class _A2>
810*0b57cec5SDimitry Andricstruct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false>
811*0b57cec5SDimitry Andric{
812*0b57cec5SDimitry Andric    typedef _Tp type;
813*0b57cec5SDimitry Andric};
814*0b57cec5SDimitry Andric
815*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_VARIADICS
816*0b57cec5SDimitry Andric
817*0b57cec5SDimitry Andrictemplate <class _Tp, class = void>
818*0b57cec5SDimitry Andricstruct __has_difference_type : false_type {};
819*0b57cec5SDimitry Andric
820*0b57cec5SDimitry Andrictemplate <class _Tp>
821*0b57cec5SDimitry Andricstruct __has_difference_type<_Tp,
822*0b57cec5SDimitry Andric            typename __void_t<typename _Tp::difference_type>::type> : true_type {};
823*0b57cec5SDimitry Andric
824*0b57cec5SDimitry Andrictemplate <class _Ptr, bool = __has_difference_type<_Ptr>::value>
825*0b57cec5SDimitry Andricstruct __pointer_traits_difference_type
826*0b57cec5SDimitry Andric{
827*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE ptrdiff_t type;
828*0b57cec5SDimitry Andric};
829*0b57cec5SDimitry Andric
830*0b57cec5SDimitry Andrictemplate <class _Ptr>
831*0b57cec5SDimitry Andricstruct __pointer_traits_difference_type<_Ptr, true>
832*0b57cec5SDimitry Andric{
833*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Ptr::difference_type type;
834*0b57cec5SDimitry Andric};
835*0b57cec5SDimitry Andric
836*0b57cec5SDimitry Andrictemplate <class _Tp, class _Up>
837*0b57cec5SDimitry Andricstruct __has_rebind
838*0b57cec5SDimitry Andric{
839*0b57cec5SDimitry Andricprivate:
840*0b57cec5SDimitry Andric    struct __two {char __lx; char __lxx;};
841*0b57cec5SDimitry Andric    template <class _Xp> static __two __test(...);
842*0b57cec5SDimitry Andric    template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0);
843*0b57cec5SDimitry Andricpublic:
844*0b57cec5SDimitry Andric    static const bool value = sizeof(__test<_Tp>(0)) == 1;
845*0b57cec5SDimitry Andric};
846*0b57cec5SDimitry Andric
847*0b57cec5SDimitry Andrictemplate <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value>
848*0b57cec5SDimitry Andricstruct __pointer_traits_rebind
849*0b57cec5SDimitry Andric{
850*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
851*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Tp::template rebind<_Up> type;
852*0b57cec5SDimitry Andric#else
853*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Tp::template rebind<_Up>::other type;
854*0b57cec5SDimitry Andric#endif
855*0b57cec5SDimitry Andric};
856*0b57cec5SDimitry Andric
857*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_VARIADICS
858*0b57cec5SDimitry Andric
859*0b57cec5SDimitry Andrictemplate <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up>
860*0b57cec5SDimitry Andricstruct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true>
861*0b57cec5SDimitry Andric{
862*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
863*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Sp<_Tp, _Args...>::template rebind<_Up> type;
864*0b57cec5SDimitry Andric#else
865*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type;
866*0b57cec5SDimitry Andric#endif
867*0b57cec5SDimitry Andric};
868*0b57cec5SDimitry Andric
869*0b57cec5SDimitry Andrictemplate <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up>
870*0b57cec5SDimitry Andricstruct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false>
871*0b57cec5SDimitry Andric{
872*0b57cec5SDimitry Andric    typedef _Sp<_Up, _Args...> type;
873*0b57cec5SDimitry Andric};
874*0b57cec5SDimitry Andric
875*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_VARIADICS
876*0b57cec5SDimitry Andric
877*0b57cec5SDimitry Andrictemplate <template <class> class _Sp, class _Tp, class _Up>
878*0b57cec5SDimitry Andricstruct __pointer_traits_rebind<_Sp<_Tp>, _Up, true>
879*0b57cec5SDimitry Andric{
880*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
881*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp>::template rebind<_Up> type;
882*0b57cec5SDimitry Andric#else
883*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp>::template rebind<_Up>::other type;
884*0b57cec5SDimitry Andric#endif
885*0b57cec5SDimitry Andric};
886*0b57cec5SDimitry Andric
887*0b57cec5SDimitry Andrictemplate <template <class> class _Sp, class _Tp, class _Up>
888*0b57cec5SDimitry Andricstruct __pointer_traits_rebind<_Sp<_Tp>, _Up, false>
889*0b57cec5SDimitry Andric{
890*0b57cec5SDimitry Andric    typedef _Sp<_Up> type;
891*0b57cec5SDimitry Andric};
892*0b57cec5SDimitry Andric
893*0b57cec5SDimitry Andrictemplate <template <class, class> class _Sp, class _Tp, class _A0, class _Up>
894*0b57cec5SDimitry Andricstruct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true>
895*0b57cec5SDimitry Andric{
896*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
897*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type;
898*0b57cec5SDimitry Andric#else
899*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type;
900*0b57cec5SDimitry Andric#endif
901*0b57cec5SDimitry Andric};
902*0b57cec5SDimitry Andric
903*0b57cec5SDimitry Andrictemplate <template <class, class> class _Sp, class _Tp, class _A0, class _Up>
904*0b57cec5SDimitry Andricstruct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false>
905*0b57cec5SDimitry Andric{
906*0b57cec5SDimitry Andric    typedef _Sp<_Up, _A0> type;
907*0b57cec5SDimitry Andric};
908*0b57cec5SDimitry Andric
909*0b57cec5SDimitry Andrictemplate <template <class, class, class> class _Sp, class _Tp, class _A0,
910*0b57cec5SDimitry Andric                                         class _A1, class _Up>
911*0b57cec5SDimitry Andricstruct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true>
912*0b57cec5SDimitry Andric{
913*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
914*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type;
915*0b57cec5SDimitry Andric#else
916*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type;
917*0b57cec5SDimitry Andric#endif
918*0b57cec5SDimitry Andric};
919*0b57cec5SDimitry Andric
920*0b57cec5SDimitry Andrictemplate <template <class, class, class> class _Sp, class _Tp, class _A0,
921*0b57cec5SDimitry Andric                                         class _A1, class _Up>
922*0b57cec5SDimitry Andricstruct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false>
923*0b57cec5SDimitry Andric{
924*0b57cec5SDimitry Andric    typedef _Sp<_Up, _A0, _A1> type;
925*0b57cec5SDimitry Andric};
926*0b57cec5SDimitry Andric
927*0b57cec5SDimitry Andrictemplate <template <class, class, class, class> class _Sp, class _Tp, class _A0,
928*0b57cec5SDimitry Andric                                                class _A1, class _A2, class _Up>
929*0b57cec5SDimitry Andricstruct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true>
930*0b57cec5SDimitry Andric{
931*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
932*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type;
933*0b57cec5SDimitry Andric#else
934*0b57cec5SDimitry Andric    typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type;
935*0b57cec5SDimitry Andric#endif
936*0b57cec5SDimitry Andric};
937*0b57cec5SDimitry Andric
938*0b57cec5SDimitry Andrictemplate <template <class, class, class, class> class _Sp, class _Tp, class _A0,
939*0b57cec5SDimitry Andric                                                class _A1, class _A2, class _Up>
940*0b57cec5SDimitry Andricstruct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false>
941*0b57cec5SDimitry Andric{
942*0b57cec5SDimitry Andric    typedef _Sp<_Up, _A0, _A1, _A2> type;
943*0b57cec5SDimitry Andric};
944*0b57cec5SDimitry Andric
945*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_VARIADICS
946*0b57cec5SDimitry Andric
947*0b57cec5SDimitry Andrictemplate <class _Ptr>
948*0b57cec5SDimitry Andricstruct _LIBCPP_TEMPLATE_VIS pointer_traits
949*0b57cec5SDimitry Andric{
950*0b57cec5SDimitry Andric    typedef _Ptr                                                     pointer;
951*0b57cec5SDimitry Andric    typedef typename __pointer_traits_element_type<pointer>::type    element_type;
952*0b57cec5SDimitry Andric    typedef typename __pointer_traits_difference_type<pointer>::type difference_type;
953*0b57cec5SDimitry Andric
954*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
955*0b57cec5SDimitry Andric    template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type;
956*0b57cec5SDimitry Andric#else
957*0b57cec5SDimitry Andric    template <class _Up> struct rebind
958*0b57cec5SDimitry Andric        {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;};
959*0b57cec5SDimitry Andric#endif  // _LIBCPP_CXX03_LANG
960*0b57cec5SDimitry Andric
961*0b57cec5SDimitry Andricprivate:
962*0b57cec5SDimitry Andric    struct __nat {};
963*0b57cec5SDimitry Andricpublic:
964*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
965*0b57cec5SDimitry Andric    static pointer pointer_to(typename conditional<is_void<element_type>::value,
966*0b57cec5SDimitry Andric                                           __nat, element_type>::type& __r)
967*0b57cec5SDimitry Andric        {return pointer::pointer_to(__r);}
968*0b57cec5SDimitry Andric};
969*0b57cec5SDimitry Andric
970*0b57cec5SDimitry Andrictemplate <class _Tp>
971*0b57cec5SDimitry Andricstruct _LIBCPP_TEMPLATE_VIS pointer_traits<_Tp*>
972*0b57cec5SDimitry Andric{
973*0b57cec5SDimitry Andric    typedef _Tp*      pointer;
974*0b57cec5SDimitry Andric    typedef _Tp       element_type;
975*0b57cec5SDimitry Andric    typedef ptrdiff_t difference_type;
976*0b57cec5SDimitry Andric
977*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
978*0b57cec5SDimitry Andric    template <class _Up> using rebind = _Up*;
979*0b57cec5SDimitry Andric#else
980*0b57cec5SDimitry Andric    template <class _Up> struct rebind {typedef _Up* other;};
981*0b57cec5SDimitry Andric#endif
982*0b57cec5SDimitry Andric
983*0b57cec5SDimitry Andricprivate:
984*0b57cec5SDimitry Andric    struct __nat {};
985*0b57cec5SDimitry Andricpublic:
986*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
987*0b57cec5SDimitry Andric    static pointer pointer_to(typename conditional<is_void<element_type>::value,
988*0b57cec5SDimitry Andric                                      __nat, element_type>::type& __r) _NOEXCEPT
989*0b57cec5SDimitry Andric        {return _VSTD::addressof(__r);}
990*0b57cec5SDimitry Andric};
991*0b57cec5SDimitry Andric
992*0b57cec5SDimitry Andrictemplate <class _From, class _To>
993*0b57cec5SDimitry Andricstruct __rebind_pointer {
994*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
995*0b57cec5SDimitry Andric    typedef typename pointer_traits<_From>::template rebind<_To>        type;
996*0b57cec5SDimitry Andric#else
997*0b57cec5SDimitry Andric    typedef typename pointer_traits<_From>::template rebind<_To>::other type;
998*0b57cec5SDimitry Andric#endif
999*0b57cec5SDimitry Andric};
1000*0b57cec5SDimitry Andric
1001*0b57cec5SDimitry Andric// allocator_traits
1002*0b57cec5SDimitry Andric
1003*0b57cec5SDimitry Andrictemplate <class _Tp, class = void>
1004*0b57cec5SDimitry Andricstruct __has_pointer_type : false_type {};
1005*0b57cec5SDimitry Andric
1006*0b57cec5SDimitry Andrictemplate <class _Tp>
1007*0b57cec5SDimitry Andricstruct __has_pointer_type<_Tp,
1008*0b57cec5SDimitry Andric          typename __void_t<typename _Tp::pointer>::type> : true_type {};
1009*0b57cec5SDimitry Andric
1010*0b57cec5SDimitry Andricnamespace __pointer_type_imp
1011*0b57cec5SDimitry Andric{
1012*0b57cec5SDimitry Andric
1013*0b57cec5SDimitry Andrictemplate <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value>
1014*0b57cec5SDimitry Andricstruct __pointer_type
1015*0b57cec5SDimitry Andric{
1016*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Dp::pointer type;
1017*0b57cec5SDimitry Andric};
1018*0b57cec5SDimitry Andric
1019*0b57cec5SDimitry Andrictemplate <class _Tp, class _Dp>
1020*0b57cec5SDimitry Andricstruct __pointer_type<_Tp, _Dp, false>
1021*0b57cec5SDimitry Andric{
1022*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE _Tp* type;
1023*0b57cec5SDimitry Andric};
1024*0b57cec5SDimitry Andric
1025*0b57cec5SDimitry Andric}  // __pointer_type_imp
1026*0b57cec5SDimitry Andric
1027*0b57cec5SDimitry Andrictemplate <class _Tp, class _Dp>
1028*0b57cec5SDimitry Andricstruct __pointer_type
1029*0b57cec5SDimitry Andric{
1030*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type;
1031*0b57cec5SDimitry Andric};
1032*0b57cec5SDimitry Andric
1033*0b57cec5SDimitry Andrictemplate <class _Tp, class = void>
1034*0b57cec5SDimitry Andricstruct __has_const_pointer : false_type {};
1035*0b57cec5SDimitry Andric
1036*0b57cec5SDimitry Andrictemplate <class _Tp>
1037*0b57cec5SDimitry Andricstruct __has_const_pointer<_Tp,
1038*0b57cec5SDimitry Andric            typename __void_t<typename _Tp::const_pointer>::type> : true_type {};
1039*0b57cec5SDimitry Andric
1040*0b57cec5SDimitry Andrictemplate <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value>
1041*0b57cec5SDimitry Andricstruct __const_pointer
1042*0b57cec5SDimitry Andric{
1043*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Alloc::const_pointer type;
1044*0b57cec5SDimitry Andric};
1045*0b57cec5SDimitry Andric
1046*0b57cec5SDimitry Andrictemplate <class _Tp, class _Ptr, class _Alloc>
1047*0b57cec5SDimitry Andricstruct __const_pointer<_Tp, _Ptr, _Alloc, false>
1048*0b57cec5SDimitry Andric{
1049*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
1050*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename pointer_traits<_Ptr>::template rebind<const _Tp> type;
1051*0b57cec5SDimitry Andric#else
1052*0b57cec5SDimitry Andric    typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type;
1053*0b57cec5SDimitry Andric#endif
1054*0b57cec5SDimitry Andric};
1055*0b57cec5SDimitry Andric
1056*0b57cec5SDimitry Andrictemplate <class _Tp, class = void>
1057*0b57cec5SDimitry Andricstruct __has_void_pointer : false_type {};
1058*0b57cec5SDimitry Andric
1059*0b57cec5SDimitry Andrictemplate <class _Tp>
1060*0b57cec5SDimitry Andricstruct __has_void_pointer<_Tp,
1061*0b57cec5SDimitry Andric               typename __void_t<typename _Tp::void_pointer>::type> : true_type {};
1062*0b57cec5SDimitry Andric
1063*0b57cec5SDimitry Andrictemplate <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value>
1064*0b57cec5SDimitry Andricstruct __void_pointer
1065*0b57cec5SDimitry Andric{
1066*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Alloc::void_pointer type;
1067*0b57cec5SDimitry Andric};
1068*0b57cec5SDimitry Andric
1069*0b57cec5SDimitry Andrictemplate <class _Ptr, class _Alloc>
1070*0b57cec5SDimitry Andricstruct __void_pointer<_Ptr, _Alloc, false>
1071*0b57cec5SDimitry Andric{
1072*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
1073*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename pointer_traits<_Ptr>::template rebind<void> type;
1074*0b57cec5SDimitry Andric#else
1075*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename pointer_traits<_Ptr>::template rebind<void>::other type;
1076*0b57cec5SDimitry Andric#endif
1077*0b57cec5SDimitry Andric};
1078*0b57cec5SDimitry Andric
1079*0b57cec5SDimitry Andrictemplate <class _Tp, class = void>
1080*0b57cec5SDimitry Andricstruct __has_const_void_pointer : false_type {};
1081*0b57cec5SDimitry Andric
1082*0b57cec5SDimitry Andrictemplate <class _Tp>
1083*0b57cec5SDimitry Andricstruct __has_const_void_pointer<_Tp,
1084*0b57cec5SDimitry Andric            typename __void_t<typename _Tp::const_void_pointer>::type> : true_type {};
1085*0b57cec5SDimitry Andric
1086*0b57cec5SDimitry Andrictemplate <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value>
1087*0b57cec5SDimitry Andricstruct __const_void_pointer
1088*0b57cec5SDimitry Andric{
1089*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Alloc::const_void_pointer type;
1090*0b57cec5SDimitry Andric};
1091*0b57cec5SDimitry Andric
1092*0b57cec5SDimitry Andrictemplate <class _Ptr, class _Alloc>
1093*0b57cec5SDimitry Andricstruct __const_void_pointer<_Ptr, _Alloc, false>
1094*0b57cec5SDimitry Andric{
1095*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
1096*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename pointer_traits<_Ptr>::template rebind<const void> type;
1097*0b57cec5SDimitry Andric#else
1098*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename pointer_traits<_Ptr>::template rebind<const void>::other type;
1099*0b57cec5SDimitry Andric#endif
1100*0b57cec5SDimitry Andric};
1101*0b57cec5SDimitry Andric
1102*0b57cec5SDimitry Andrictemplate <class _Tp>
1103*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1104*0b57cec5SDimitry Andric_Tp*
1105*0b57cec5SDimitry Andric__to_raw_pointer(_Tp* __p) _NOEXCEPT
1106*0b57cec5SDimitry Andric{
1107*0b57cec5SDimitry Andric    return __p;
1108*0b57cec5SDimitry Andric}
1109*0b57cec5SDimitry Andric
1110*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER <= 17
1111*0b57cec5SDimitry Andrictemplate <class _Pointer>
1112*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
1113*0b57cec5SDimitry Andrictypename pointer_traits<_Pointer>::element_type*
1114*0b57cec5SDimitry Andric__to_raw_pointer(_Pointer __p) _NOEXCEPT
1115*0b57cec5SDimitry Andric{
1116*0b57cec5SDimitry Andric    return _VSTD::__to_raw_pointer(__p.operator->());
1117*0b57cec5SDimitry Andric}
1118*0b57cec5SDimitry Andric#else
1119*0b57cec5SDimitry Andrictemplate <class _Pointer>
1120*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
1121*0b57cec5SDimitry Andricauto
1122*0b57cec5SDimitry Andric__to_raw_pointer(const _Pointer& __p) _NOEXCEPT
1123*0b57cec5SDimitry Andric-> decltype(pointer_traits<_Pointer>::to_address(__p))
1124*0b57cec5SDimitry Andric{
1125*0b57cec5SDimitry Andric    return pointer_traits<_Pointer>::to_address(__p);
1126*0b57cec5SDimitry Andric}
1127*0b57cec5SDimitry Andric
1128*0b57cec5SDimitry Andrictemplate <class _Pointer, class... _None>
1129*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
1130*0b57cec5SDimitry Andricauto
1131*0b57cec5SDimitry Andric__to_raw_pointer(const _Pointer& __p, _None...) _NOEXCEPT
1132*0b57cec5SDimitry Andric{
1133*0b57cec5SDimitry Andric    return _VSTD::__to_raw_pointer(__p.operator->());
1134*0b57cec5SDimitry Andric}
1135*0b57cec5SDimitry Andric
1136*0b57cec5SDimitry Andrictemplate <class _Tp>
1137*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY constexpr
1138*0b57cec5SDimitry Andric_Tp*
1139*0b57cec5SDimitry Andricto_address(_Tp* __p) _NOEXCEPT
1140*0b57cec5SDimitry Andric{
1141*0b57cec5SDimitry Andric    static_assert(!is_function_v<_Tp>, "_Tp is a function type");
1142*0b57cec5SDimitry Andric    return __p;
1143*0b57cec5SDimitry Andric}
1144*0b57cec5SDimitry Andric
1145*0b57cec5SDimitry Andrictemplate <class _Pointer>
1146*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
1147*0b57cec5SDimitry Andricauto
1148*0b57cec5SDimitry Andricto_address(const _Pointer& __p) _NOEXCEPT
1149*0b57cec5SDimitry Andric{
1150*0b57cec5SDimitry Andric    return _VSTD::__to_raw_pointer(__p);
1151*0b57cec5SDimitry Andric}
1152*0b57cec5SDimitry Andric#endif
1153*0b57cec5SDimitry Andric
1154*0b57cec5SDimitry Andrictemplate <class _Tp, class = void>
1155*0b57cec5SDimitry Andricstruct __has_size_type : false_type {};
1156*0b57cec5SDimitry Andric
1157*0b57cec5SDimitry Andrictemplate <class _Tp>
1158*0b57cec5SDimitry Andricstruct __has_size_type<_Tp,
1159*0b57cec5SDimitry Andric               typename __void_t<typename _Tp::size_type>::type> : true_type {};
1160*0b57cec5SDimitry Andric
1161*0b57cec5SDimitry Andrictemplate <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value>
1162*0b57cec5SDimitry Andricstruct __size_type
1163*0b57cec5SDimitry Andric{
1164*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename make_unsigned<_DiffType>::type type;
1165*0b57cec5SDimitry Andric};
1166*0b57cec5SDimitry Andric
1167*0b57cec5SDimitry Andrictemplate <class _Alloc, class _DiffType>
1168*0b57cec5SDimitry Andricstruct __size_type<_Alloc, _DiffType, true>
1169*0b57cec5SDimitry Andric{
1170*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Alloc::size_type type;
1171*0b57cec5SDimitry Andric};
1172*0b57cec5SDimitry Andric
1173*0b57cec5SDimitry Andrictemplate <class _Tp, class = void>
1174*0b57cec5SDimitry Andricstruct __has_propagate_on_container_copy_assignment : false_type {};
1175*0b57cec5SDimitry Andric
1176*0b57cec5SDimitry Andrictemplate <class _Tp>
1177*0b57cec5SDimitry Andricstruct __has_propagate_on_container_copy_assignment<_Tp,
1178*0b57cec5SDimitry Andric    typename __void_t<typename _Tp::propagate_on_container_copy_assignment>::type>
1179*0b57cec5SDimitry Andric        : true_type {};
1180*0b57cec5SDimitry Andric
1181*0b57cec5SDimitry Andrictemplate <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value>
1182*0b57cec5SDimitry Andricstruct __propagate_on_container_copy_assignment
1183*0b57cec5SDimitry Andric{
1184*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE false_type type;
1185*0b57cec5SDimitry Andric};
1186*0b57cec5SDimitry Andric
1187*0b57cec5SDimitry Andrictemplate <class _Alloc>
1188*0b57cec5SDimitry Andricstruct __propagate_on_container_copy_assignment<_Alloc, true>
1189*0b57cec5SDimitry Andric{
1190*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Alloc::propagate_on_container_copy_assignment type;
1191*0b57cec5SDimitry Andric};
1192*0b57cec5SDimitry Andric
1193*0b57cec5SDimitry Andrictemplate <class _Tp, class = void>
1194*0b57cec5SDimitry Andricstruct __has_propagate_on_container_move_assignment : false_type {};
1195*0b57cec5SDimitry Andric
1196*0b57cec5SDimitry Andrictemplate <class _Tp>
1197*0b57cec5SDimitry Andricstruct __has_propagate_on_container_move_assignment<_Tp,
1198*0b57cec5SDimitry Andric           typename __void_t<typename _Tp::propagate_on_container_move_assignment>::type>
1199*0b57cec5SDimitry Andric               : true_type {};
1200*0b57cec5SDimitry Andric
1201*0b57cec5SDimitry Andrictemplate <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value>
1202*0b57cec5SDimitry Andricstruct __propagate_on_container_move_assignment
1203*0b57cec5SDimitry Andric{
1204*0b57cec5SDimitry Andric    typedef false_type type;
1205*0b57cec5SDimitry Andric};
1206*0b57cec5SDimitry Andric
1207*0b57cec5SDimitry Andrictemplate <class _Alloc>
1208*0b57cec5SDimitry Andricstruct __propagate_on_container_move_assignment<_Alloc, true>
1209*0b57cec5SDimitry Andric{
1210*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Alloc::propagate_on_container_move_assignment type;
1211*0b57cec5SDimitry Andric};
1212*0b57cec5SDimitry Andric
1213*0b57cec5SDimitry Andrictemplate <class _Tp, class = void>
1214*0b57cec5SDimitry Andricstruct __has_propagate_on_container_swap : false_type {};
1215*0b57cec5SDimitry Andric
1216*0b57cec5SDimitry Andrictemplate <class _Tp>
1217*0b57cec5SDimitry Andricstruct __has_propagate_on_container_swap<_Tp,
1218*0b57cec5SDimitry Andric           typename __void_t<typename _Tp::propagate_on_container_swap>::type>
1219*0b57cec5SDimitry Andric               : true_type {};
1220*0b57cec5SDimitry Andric
1221*0b57cec5SDimitry Andrictemplate <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value>
1222*0b57cec5SDimitry Andricstruct __propagate_on_container_swap
1223*0b57cec5SDimitry Andric{
1224*0b57cec5SDimitry Andric    typedef false_type type;
1225*0b57cec5SDimitry Andric};
1226*0b57cec5SDimitry Andric
1227*0b57cec5SDimitry Andrictemplate <class _Alloc>
1228*0b57cec5SDimitry Andricstruct __propagate_on_container_swap<_Alloc, true>
1229*0b57cec5SDimitry Andric{
1230*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Alloc::propagate_on_container_swap type;
1231*0b57cec5SDimitry Andric};
1232*0b57cec5SDimitry Andric
1233*0b57cec5SDimitry Andrictemplate <class _Tp, class = void>
1234*0b57cec5SDimitry Andricstruct __has_is_always_equal : false_type {};
1235*0b57cec5SDimitry Andric
1236*0b57cec5SDimitry Andrictemplate <class _Tp>
1237*0b57cec5SDimitry Andricstruct __has_is_always_equal<_Tp,
1238*0b57cec5SDimitry Andric           typename __void_t<typename _Tp::is_always_equal>::type>
1239*0b57cec5SDimitry Andric               : true_type {};
1240*0b57cec5SDimitry Andric
1241*0b57cec5SDimitry Andrictemplate <class _Alloc, bool = __has_is_always_equal<_Alloc>::value>
1242*0b57cec5SDimitry Andricstruct __is_always_equal
1243*0b57cec5SDimitry Andric{
1244*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _VSTD::is_empty<_Alloc>::type type;
1245*0b57cec5SDimitry Andric};
1246*0b57cec5SDimitry Andric
1247*0b57cec5SDimitry Andrictemplate <class _Alloc>
1248*0b57cec5SDimitry Andricstruct __is_always_equal<_Alloc, true>
1249*0b57cec5SDimitry Andric{
1250*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Alloc::is_always_equal type;
1251*0b57cec5SDimitry Andric};
1252*0b57cec5SDimitry Andric
1253*0b57cec5SDimitry Andrictemplate <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value>
1254*0b57cec5SDimitry Andricstruct __has_rebind_other
1255*0b57cec5SDimitry Andric{
1256*0b57cec5SDimitry Andricprivate:
1257*0b57cec5SDimitry Andric    struct __two {char __lx; char __lxx;};
1258*0b57cec5SDimitry Andric    template <class _Xp> static __two __test(...);
1259*0b57cec5SDimitry Andric    template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0);
1260*0b57cec5SDimitry Andricpublic:
1261*0b57cec5SDimitry Andric    static const bool value = sizeof(__test<_Tp>(0)) == 1;
1262*0b57cec5SDimitry Andric};
1263*0b57cec5SDimitry Andric
1264*0b57cec5SDimitry Andrictemplate <class _Tp, class _Up>
1265*0b57cec5SDimitry Andricstruct __has_rebind_other<_Tp, _Up, false>
1266*0b57cec5SDimitry Andric{
1267*0b57cec5SDimitry Andric    static const bool value = false;
1268*0b57cec5SDimitry Andric};
1269*0b57cec5SDimitry Andric
1270*0b57cec5SDimitry Andrictemplate <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value>
1271*0b57cec5SDimitry Andricstruct __allocator_traits_rebind
1272*0b57cec5SDimitry Andric{
1273*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Tp::template rebind<_Up>::other type;
1274*0b57cec5SDimitry Andric};
1275*0b57cec5SDimitry Andric
1276*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_VARIADICS
1277*0b57cec5SDimitry Andric
1278*0b57cec5SDimitry Andrictemplate <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up>
1279*0b57cec5SDimitry Andricstruct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true>
1280*0b57cec5SDimitry Andric{
1281*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type;
1282*0b57cec5SDimitry Andric};
1283*0b57cec5SDimitry Andric
1284*0b57cec5SDimitry Andrictemplate <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up>
1285*0b57cec5SDimitry Andricstruct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false>
1286*0b57cec5SDimitry Andric{
1287*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE _Alloc<_Up, _Args...> type;
1288*0b57cec5SDimitry Andric};
1289*0b57cec5SDimitry Andric
1290*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_VARIADICS
1291*0b57cec5SDimitry Andric
1292*0b57cec5SDimitry Andrictemplate <template <class> class _Alloc, class _Tp, class _Up>
1293*0b57cec5SDimitry Andricstruct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true>
1294*0b57cec5SDimitry Andric{
1295*0b57cec5SDimitry Andric    typedef typename _Alloc<_Tp>::template rebind<_Up>::other type;
1296*0b57cec5SDimitry Andric};
1297*0b57cec5SDimitry Andric
1298*0b57cec5SDimitry Andrictemplate <template <class> class _Alloc, class _Tp, class _Up>
1299*0b57cec5SDimitry Andricstruct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false>
1300*0b57cec5SDimitry Andric{
1301*0b57cec5SDimitry Andric    typedef _Alloc<_Up> type;
1302*0b57cec5SDimitry Andric};
1303*0b57cec5SDimitry Andric
1304*0b57cec5SDimitry Andrictemplate <template <class, class> class _Alloc, class _Tp, class _A0, class _Up>
1305*0b57cec5SDimitry Andricstruct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true>
1306*0b57cec5SDimitry Andric{
1307*0b57cec5SDimitry Andric    typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type;
1308*0b57cec5SDimitry Andric};
1309*0b57cec5SDimitry Andric
1310*0b57cec5SDimitry Andrictemplate <template <class, class> class _Alloc, class _Tp, class _A0, class _Up>
1311*0b57cec5SDimitry Andricstruct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false>
1312*0b57cec5SDimitry Andric{
1313*0b57cec5SDimitry Andric    typedef _Alloc<_Up, _A0> type;
1314*0b57cec5SDimitry Andric};
1315*0b57cec5SDimitry Andric
1316*0b57cec5SDimitry Andrictemplate <template <class, class, class> class _Alloc, class _Tp, class _A0,
1317*0b57cec5SDimitry Andric                                         class _A1, class _Up>
1318*0b57cec5SDimitry Andricstruct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true>
1319*0b57cec5SDimitry Andric{
1320*0b57cec5SDimitry Andric    typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type;
1321*0b57cec5SDimitry Andric};
1322*0b57cec5SDimitry Andric
1323*0b57cec5SDimitry Andrictemplate <template <class, class, class> class _Alloc, class _Tp, class _A0,
1324*0b57cec5SDimitry Andric                                         class _A1, class _Up>
1325*0b57cec5SDimitry Andricstruct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false>
1326*0b57cec5SDimitry Andric{
1327*0b57cec5SDimitry Andric    typedef _Alloc<_Up, _A0, _A1> type;
1328*0b57cec5SDimitry Andric};
1329*0b57cec5SDimitry Andric
1330*0b57cec5SDimitry Andrictemplate <template <class, class, class, class> class _Alloc, class _Tp, class _A0,
1331*0b57cec5SDimitry Andric                                                class _A1, class _A2, class _Up>
1332*0b57cec5SDimitry Andricstruct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true>
1333*0b57cec5SDimitry Andric{
1334*0b57cec5SDimitry Andric    typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type;
1335*0b57cec5SDimitry Andric};
1336*0b57cec5SDimitry Andric
1337*0b57cec5SDimitry Andrictemplate <template <class, class, class, class> class _Alloc, class _Tp, class _A0,
1338*0b57cec5SDimitry Andric                                                class _A1, class _A2, class _Up>
1339*0b57cec5SDimitry Andricstruct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false>
1340*0b57cec5SDimitry Andric{
1341*0b57cec5SDimitry Andric    typedef _Alloc<_Up, _A0, _A1, _A2> type;
1342*0b57cec5SDimitry Andric};
1343*0b57cec5SDimitry Andric
1344*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_VARIADICS
1345*0b57cec5SDimitry Andric
1346*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
1347*0b57cec5SDimitry Andric
1348*0b57cec5SDimitry Andrictemplate <class _Alloc, class _SizeType, class _ConstVoidPtr>
1349*0b57cec5SDimitry Andricauto
1350*0b57cec5SDimitry Andric__has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p)
1351*0b57cec5SDimitry Andric    -> decltype((void)__a.allocate(__sz, __p), true_type());
1352*0b57cec5SDimitry Andric
1353*0b57cec5SDimitry Andrictemplate <class _Alloc, class _SizeType, class _ConstVoidPtr>
1354*0b57cec5SDimitry Andricauto
1355*0b57cec5SDimitry Andric__has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p)
1356*0b57cec5SDimitry Andric    -> false_type;
1357*0b57cec5SDimitry Andric
1358*0b57cec5SDimitry Andrictemplate <class _Alloc, class _SizeType, class _ConstVoidPtr>
1359*0b57cec5SDimitry Andricstruct __has_allocate_hint
1360*0b57cec5SDimitry Andric    : integral_constant<bool,
1361*0b57cec5SDimitry Andric        is_same<
1362*0b57cec5SDimitry Andric            decltype(_VSTD::__has_allocate_hint_test(declval<_Alloc>(),
1363*0b57cec5SDimitry Andric                                          declval<_SizeType>(),
1364*0b57cec5SDimitry Andric                                          declval<_ConstVoidPtr>())),
1365*0b57cec5SDimitry Andric            true_type>::value>
1366*0b57cec5SDimitry Andric{
1367*0b57cec5SDimitry Andric};
1368*0b57cec5SDimitry Andric
1369*0b57cec5SDimitry Andric#else  // _LIBCPP_CXX03_LANG
1370*0b57cec5SDimitry Andric
1371*0b57cec5SDimitry Andrictemplate <class _Alloc, class _SizeType, class _ConstVoidPtr>
1372*0b57cec5SDimitry Andricstruct __has_allocate_hint
1373*0b57cec5SDimitry Andric    : true_type
1374*0b57cec5SDimitry Andric{
1375*0b57cec5SDimitry Andric};
1376*0b57cec5SDimitry Andric
1377*0b57cec5SDimitry Andric#endif  // _LIBCPP_CXX03_LANG
1378*0b57cec5SDimitry Andric
1379*0b57cec5SDimitry Andric#if !defined(_LIBCPP_CXX03_LANG)
1380*0b57cec5SDimitry Andric
1381*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Tp, class ..._Args>
1382*0b57cec5SDimitry Andricdecltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(),
1383*0b57cec5SDimitry Andric                                           _VSTD::declval<_Args>()...),
1384*0b57cec5SDimitry Andric                                           true_type())
1385*0b57cec5SDimitry Andric__has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args);
1386*0b57cec5SDimitry Andric
1387*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Pointer, class ..._Args>
1388*0b57cec5SDimitry Andricfalse_type
1389*0b57cec5SDimitry Andric__has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args);
1390*0b57cec5SDimitry Andric
1391*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Pointer, class ..._Args>
1392*0b57cec5SDimitry Andricstruct __has_construct
1393*0b57cec5SDimitry Andric    : integral_constant<bool,
1394*0b57cec5SDimitry Andric        is_same<
1395*0b57cec5SDimitry Andric            decltype(_VSTD::__has_construct_test(declval<_Alloc>(),
1396*0b57cec5SDimitry Andric                                          declval<_Pointer>(),
1397*0b57cec5SDimitry Andric                                          declval<_Args>()...)),
1398*0b57cec5SDimitry Andric            true_type>::value>
1399*0b57cec5SDimitry Andric{
1400*0b57cec5SDimitry Andric};
1401*0b57cec5SDimitry Andric
1402*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Pointer>
1403*0b57cec5SDimitry Andricauto
1404*0b57cec5SDimitry Andric__has_destroy_test(_Alloc&& __a, _Pointer&& __p)
1405*0b57cec5SDimitry Andric    -> decltype(__a.destroy(__p), true_type());
1406*0b57cec5SDimitry Andric
1407*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Pointer>
1408*0b57cec5SDimitry Andricauto
1409*0b57cec5SDimitry Andric__has_destroy_test(const _Alloc& __a, _Pointer&& __p)
1410*0b57cec5SDimitry Andric    -> false_type;
1411*0b57cec5SDimitry Andric
1412*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Pointer>
1413*0b57cec5SDimitry Andricstruct __has_destroy
1414*0b57cec5SDimitry Andric    : integral_constant<bool,
1415*0b57cec5SDimitry Andric        is_same<
1416*0b57cec5SDimitry Andric            decltype(_VSTD::__has_destroy_test(declval<_Alloc>(),
1417*0b57cec5SDimitry Andric                                        declval<_Pointer>())),
1418*0b57cec5SDimitry Andric            true_type>::value>
1419*0b57cec5SDimitry Andric{
1420*0b57cec5SDimitry Andric};
1421*0b57cec5SDimitry Andric
1422*0b57cec5SDimitry Andrictemplate <class _Alloc>
1423*0b57cec5SDimitry Andricauto
1424*0b57cec5SDimitry Andric__has_max_size_test(_Alloc&& __a)
1425*0b57cec5SDimitry Andric    -> decltype(__a.max_size(), true_type());
1426*0b57cec5SDimitry Andric
1427*0b57cec5SDimitry Andrictemplate <class _Alloc>
1428*0b57cec5SDimitry Andricauto
1429*0b57cec5SDimitry Andric__has_max_size_test(const volatile _Alloc& __a)
1430*0b57cec5SDimitry Andric    -> false_type;
1431*0b57cec5SDimitry Andric
1432*0b57cec5SDimitry Andrictemplate <class _Alloc>
1433*0b57cec5SDimitry Andricstruct __has_max_size
1434*0b57cec5SDimitry Andric    : integral_constant<bool,
1435*0b57cec5SDimitry Andric        is_same<
1436*0b57cec5SDimitry Andric            decltype(_VSTD::__has_max_size_test(declval<_Alloc&>())),
1437*0b57cec5SDimitry Andric            true_type>::value>
1438*0b57cec5SDimitry Andric{
1439*0b57cec5SDimitry Andric};
1440*0b57cec5SDimitry Andric
1441*0b57cec5SDimitry Andrictemplate <class _Alloc>
1442*0b57cec5SDimitry Andricauto
1443*0b57cec5SDimitry Andric__has_select_on_container_copy_construction_test(_Alloc&& __a)
1444*0b57cec5SDimitry Andric    -> decltype(__a.select_on_container_copy_construction(), true_type());
1445*0b57cec5SDimitry Andric
1446*0b57cec5SDimitry Andrictemplate <class _Alloc>
1447*0b57cec5SDimitry Andricauto
1448*0b57cec5SDimitry Andric__has_select_on_container_copy_construction_test(const volatile _Alloc& __a)
1449*0b57cec5SDimitry Andric    -> false_type;
1450*0b57cec5SDimitry Andric
1451*0b57cec5SDimitry Andrictemplate <class _Alloc>
1452*0b57cec5SDimitry Andricstruct __has_select_on_container_copy_construction
1453*0b57cec5SDimitry Andric    : integral_constant<bool,
1454*0b57cec5SDimitry Andric        is_same<
1455*0b57cec5SDimitry Andric            decltype(_VSTD::__has_select_on_container_copy_construction_test(declval<_Alloc&>())),
1456*0b57cec5SDimitry Andric            true_type>::value>
1457*0b57cec5SDimitry Andric{
1458*0b57cec5SDimitry Andric};
1459*0b57cec5SDimitry Andric
1460*0b57cec5SDimitry Andric#else  // _LIBCPP_CXX03_LANG
1461*0b57cec5SDimitry Andric
1462*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Pointer, class _Tp, class = void>
1463*0b57cec5SDimitry Andricstruct __has_construct : std::false_type {};
1464*0b57cec5SDimitry Andric
1465*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Pointer, class _Tp>
1466*0b57cec5SDimitry Andricstruct __has_construct<_Alloc, _Pointer, _Tp, typename __void_t<
1467*0b57cec5SDimitry Andric    decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Pointer>(), _VSTD::declval<_Tp>()))
1468*0b57cec5SDimitry Andric>::type> : std::true_type {};
1469*0b57cec5SDimitry Andric
1470*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Pointer, class = void>
1471*0b57cec5SDimitry Andricstruct __has_destroy : false_type {};
1472*0b57cec5SDimitry Andric
1473*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Pointer>
1474*0b57cec5SDimitry Andricstruct __has_destroy<_Alloc, _Pointer, typename __void_t<
1475*0b57cec5SDimitry Andric    decltype(_VSTD::declval<_Alloc>().destroy(_VSTD::declval<_Pointer>()))
1476*0b57cec5SDimitry Andric>::type> : std::true_type {};
1477*0b57cec5SDimitry Andric
1478*0b57cec5SDimitry Andrictemplate <class _Alloc>
1479*0b57cec5SDimitry Andricstruct __has_max_size
1480*0b57cec5SDimitry Andric    : true_type
1481*0b57cec5SDimitry Andric{
1482*0b57cec5SDimitry Andric};
1483*0b57cec5SDimitry Andric
1484*0b57cec5SDimitry Andrictemplate <class _Alloc>
1485*0b57cec5SDimitry Andricstruct __has_select_on_container_copy_construction
1486*0b57cec5SDimitry Andric    : false_type
1487*0b57cec5SDimitry Andric{
1488*0b57cec5SDimitry Andric};
1489*0b57cec5SDimitry Andric
1490*0b57cec5SDimitry Andric#endif  // _LIBCPP_CXX03_LANG
1491*0b57cec5SDimitry Andric
1492*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value>
1493*0b57cec5SDimitry Andricstruct __alloc_traits_difference_type
1494*0b57cec5SDimitry Andric{
1495*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename pointer_traits<_Ptr>::difference_type type;
1496*0b57cec5SDimitry Andric};
1497*0b57cec5SDimitry Andric
1498*0b57cec5SDimitry Andrictemplate <class _Alloc, class _Ptr>
1499*0b57cec5SDimitry Andricstruct __alloc_traits_difference_type<_Alloc, _Ptr, true>
1500*0b57cec5SDimitry Andric{
1501*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Alloc::difference_type type;
1502*0b57cec5SDimitry Andric};
1503*0b57cec5SDimitry Andric
1504*0b57cec5SDimitry Andrictemplate <class _Tp>
1505*0b57cec5SDimitry Andricstruct __is_default_allocator : false_type {};
1506*0b57cec5SDimitry Andric
1507*0b57cec5SDimitry Andrictemplate <class _Tp>
1508*0b57cec5SDimitry Andricstruct __is_default_allocator<_VSTD::allocator<_Tp> > : true_type {};
1509*0b57cec5SDimitry Andric
1510*0b57cec5SDimitry Andrictemplate <class _Alloc>
1511*0b57cec5SDimitry Andricstruct _LIBCPP_TEMPLATE_VIS allocator_traits
1512*0b57cec5SDimitry Andric{
1513*0b57cec5SDimitry Andric    typedef _Alloc                              allocator_type;
1514*0b57cec5SDimitry Andric    typedef typename allocator_type::value_type value_type;
1515*0b57cec5SDimitry Andric
1516*0b57cec5SDimitry Andric    typedef typename __pointer_type<value_type, allocator_type>::type pointer;
1517*0b57cec5SDimitry Andric    typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer;
1518*0b57cec5SDimitry Andric    typedef typename __void_pointer<pointer, allocator_type>::type void_pointer;
1519*0b57cec5SDimitry Andric    typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer;
1520*0b57cec5SDimitry Andric
1521*0b57cec5SDimitry Andric    typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type;
1522*0b57cec5SDimitry Andric    typedef typename __size_type<allocator_type, difference_type>::type size_type;
1523*0b57cec5SDimitry Andric
1524*0b57cec5SDimitry Andric    typedef typename __propagate_on_container_copy_assignment<allocator_type>::type
1525*0b57cec5SDimitry Andric                     propagate_on_container_copy_assignment;
1526*0b57cec5SDimitry Andric    typedef typename __propagate_on_container_move_assignment<allocator_type>::type
1527*0b57cec5SDimitry Andric                     propagate_on_container_move_assignment;
1528*0b57cec5SDimitry Andric    typedef typename __propagate_on_container_swap<allocator_type>::type
1529*0b57cec5SDimitry Andric                     propagate_on_container_swap;
1530*0b57cec5SDimitry Andric    typedef typename __is_always_equal<allocator_type>::type
1531*0b57cec5SDimitry Andric                     is_always_equal;
1532*0b57cec5SDimitry Andric
1533*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
1534*0b57cec5SDimitry Andric    template <class _Tp> using rebind_alloc =
1535*0b57cec5SDimitry Andric                  typename __allocator_traits_rebind<allocator_type, _Tp>::type;
1536*0b57cec5SDimitry Andric    template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp> >;
1537*0b57cec5SDimitry Andric#else  // _LIBCPP_CXX03_LANG
1538*0b57cec5SDimitry Andric    template <class _Tp> struct rebind_alloc
1539*0b57cec5SDimitry Andric        {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;};
1540*0b57cec5SDimitry Andric    template <class _Tp> struct rebind_traits
1541*0b57cec5SDimitry Andric        {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;};
1542*0b57cec5SDimitry Andric#endif  // _LIBCPP_CXX03_LANG
1543*0b57cec5SDimitry Andric
1544*0b57cec5SDimitry Andric    _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
1545*0b57cec5SDimitry Andric    static pointer allocate(allocator_type& __a, size_type __n)
1546*0b57cec5SDimitry Andric        {return __a.allocate(__n);}
1547*0b57cec5SDimitry Andric    _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
1548*0b57cec5SDimitry Andric    static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint)
1549*0b57cec5SDimitry Andric        {return __allocate(__a, __n, __hint,
1550*0b57cec5SDimitry Andric            __has_allocate_hint<allocator_type, size_type, const_void_pointer>());}
1551*0b57cec5SDimitry Andric
1552*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
1553*0b57cec5SDimitry Andric    static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT
1554*0b57cec5SDimitry Andric        {__a.deallocate(__p, __n);}
1555*0b57cec5SDimitry Andric
1556*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_VARIADICS
1557*0b57cec5SDimitry Andric    template <class _Tp, class... _Args>
1558*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1559*0b57cec5SDimitry Andric        static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args)
1560*0b57cec5SDimitry Andric            {__construct(__has_construct<allocator_type, _Tp*, _Args...>(),
1561*0b57cec5SDimitry Andric                         __a, __p, _VSTD::forward<_Args>(__args)...);}
1562*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_VARIADICS
1563*0b57cec5SDimitry Andric    template <class _Tp>
1564*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1565*0b57cec5SDimitry Andric        static void construct(allocator_type&, _Tp* __p)
1566*0b57cec5SDimitry Andric            {
1567*0b57cec5SDimitry Andric                ::new ((void*)__p) _Tp();
1568*0b57cec5SDimitry Andric            }
1569*0b57cec5SDimitry Andric    template <class _Tp, class _A0>
1570*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1571*0b57cec5SDimitry Andric        static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0)
1572*0b57cec5SDimitry Andric            {
1573*0b57cec5SDimitry Andric                __construct(__has_construct<allocator_type, _Tp*, const _A0&>(),
1574*0b57cec5SDimitry Andric                            __a, __p, __a0);
1575*0b57cec5SDimitry Andric            }
1576*0b57cec5SDimitry Andric    template <class _Tp, class _A0, class _A1>
1577*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1578*0b57cec5SDimitry Andric        static void construct(allocator_type&, _Tp* __p, const _A0& __a0,
1579*0b57cec5SDimitry Andric                              const _A1& __a1)
1580*0b57cec5SDimitry Andric            {
1581*0b57cec5SDimitry Andric                ::new ((void*)__p) _Tp(__a0, __a1);
1582*0b57cec5SDimitry Andric            }
1583*0b57cec5SDimitry Andric    template <class _Tp, class _A0, class _A1, class _A2>
1584*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1585*0b57cec5SDimitry Andric        static void construct(allocator_type&, _Tp* __p, const _A0& __a0,
1586*0b57cec5SDimitry Andric                              const _A1& __a1, const _A2& __a2)
1587*0b57cec5SDimitry Andric            {
1588*0b57cec5SDimitry Andric                ::new ((void*)__p) _Tp(__a0, __a1, __a2);
1589*0b57cec5SDimitry Andric            }
1590*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_VARIADICS
1591*0b57cec5SDimitry Andric
1592*0b57cec5SDimitry Andric    template <class _Tp>
1593*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1594*0b57cec5SDimitry Andric        static void destroy(allocator_type& __a, _Tp* __p)
1595*0b57cec5SDimitry Andric            {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);}
1596*0b57cec5SDimitry Andric
1597*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
1598*0b57cec5SDimitry Andric    static size_type max_size(const allocator_type& __a) _NOEXCEPT
1599*0b57cec5SDimitry Andric        {return __max_size(__has_max_size<const allocator_type>(), __a);}
1600*0b57cec5SDimitry Andric
1601*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
1602*0b57cec5SDimitry Andric    static allocator_type
1603*0b57cec5SDimitry Andric        select_on_container_copy_construction(const allocator_type& __a)
1604*0b57cec5SDimitry Andric            {return __select_on_container_copy_construction(
1605*0b57cec5SDimitry Andric                __has_select_on_container_copy_construction<const allocator_type>(),
1606*0b57cec5SDimitry Andric                __a);}
1607*0b57cec5SDimitry Andric
1608*0b57cec5SDimitry Andric    template <class _Ptr>
1609*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1610*0b57cec5SDimitry Andric        static
1611*0b57cec5SDimitry Andric        void
1612*0b57cec5SDimitry Andric        __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2)
1613*0b57cec5SDimitry Andric        {
1614*0b57cec5SDimitry Andric            for (; __begin1 != __end1; ++__begin1, (void) ++__begin2)
1615*0b57cec5SDimitry Andric                construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1));
1616*0b57cec5SDimitry Andric        }
1617*0b57cec5SDimitry Andric
1618*0b57cec5SDimitry Andric    template <class _Tp>
1619*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1620*0b57cec5SDimitry Andric        static
1621*0b57cec5SDimitry Andric        typename enable_if
1622*0b57cec5SDimitry Andric        <
1623*0b57cec5SDimitry Andric            (__is_default_allocator<allocator_type>::value
1624*0b57cec5SDimitry Andric                || !__has_construct<allocator_type, _Tp*, _Tp>::value) &&
1625*0b57cec5SDimitry Andric             is_trivially_move_constructible<_Tp>::value,
1626*0b57cec5SDimitry Andric            void
1627*0b57cec5SDimitry Andric        >::type
1628*0b57cec5SDimitry Andric        __construct_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2)
1629*0b57cec5SDimitry Andric        {
1630*0b57cec5SDimitry Andric            ptrdiff_t _Np = __end1 - __begin1;
1631*0b57cec5SDimitry Andric            if (_Np > 0)
1632*0b57cec5SDimitry Andric            {
1633*0b57cec5SDimitry Andric                _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp));
1634*0b57cec5SDimitry Andric                __begin2 += _Np;
1635*0b57cec5SDimitry Andric            }
1636*0b57cec5SDimitry Andric        }
1637*0b57cec5SDimitry Andric
1638*0b57cec5SDimitry Andric    template <class _Iter, class _Ptr>
1639*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1640*0b57cec5SDimitry Andric        static
1641*0b57cec5SDimitry Andric        void
1642*0b57cec5SDimitry Andric        __construct_range_forward(allocator_type& __a, _Iter __begin1, _Iter __end1, _Ptr& __begin2)
1643*0b57cec5SDimitry Andric        {
1644*0b57cec5SDimitry Andric            for (; __begin1 != __end1; ++__begin1, (void) ++__begin2)
1645*0b57cec5SDimitry Andric                construct(__a, _VSTD::__to_raw_pointer(__begin2), *__begin1);
1646*0b57cec5SDimitry Andric        }
1647*0b57cec5SDimitry Andric
1648*0b57cec5SDimitry Andric    template <class _SourceTp, class _DestTp,
1649*0b57cec5SDimitry Andric              class _RawSourceTp = typename remove_const<_SourceTp>::type,
1650*0b57cec5SDimitry Andric              class _RawDestTp = typename remove_const<_DestTp>::type>
1651*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1652*0b57cec5SDimitry Andric        static
1653*0b57cec5SDimitry Andric        typename enable_if
1654*0b57cec5SDimitry Andric        <
1655*0b57cec5SDimitry Andric            is_trivially_move_constructible<_DestTp>::value &&
1656*0b57cec5SDimitry Andric            is_same<_RawSourceTp, _RawDestTp>::value &&
1657*0b57cec5SDimitry Andric            (__is_default_allocator<allocator_type>::value ||
1658*0b57cec5SDimitry Andric             !__has_construct<allocator_type, _DestTp*, _SourceTp&>::value),
1659*0b57cec5SDimitry Andric            void
1660*0b57cec5SDimitry Andric        >::type
1661*0b57cec5SDimitry Andric        __construct_range_forward(allocator_type&, _SourceTp* __begin1, _SourceTp* __end1, _DestTp*& __begin2)
1662*0b57cec5SDimitry Andric        {
1663*0b57cec5SDimitry Andric            ptrdiff_t _Np = __end1 - __begin1;
1664*0b57cec5SDimitry Andric            if (_Np > 0)
1665*0b57cec5SDimitry Andric            {
1666*0b57cec5SDimitry Andric                _VSTD::memcpy(const_cast<_RawDestTp*>(__begin2), __begin1, _Np * sizeof(_DestTp));
1667*0b57cec5SDimitry Andric                __begin2 += _Np;
1668*0b57cec5SDimitry Andric            }
1669*0b57cec5SDimitry Andric        }
1670*0b57cec5SDimitry Andric
1671*0b57cec5SDimitry Andric    template <class _Ptr>
1672*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1673*0b57cec5SDimitry Andric        static
1674*0b57cec5SDimitry Andric        void
1675*0b57cec5SDimitry Andric        __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2)
1676*0b57cec5SDimitry Andric        {
1677*0b57cec5SDimitry Andric            while (__end1 != __begin1)
1678*0b57cec5SDimitry Andric            {
1679*0b57cec5SDimitry Andric                construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1));
1680*0b57cec5SDimitry Andric                --__end2;
1681*0b57cec5SDimitry Andric            }
1682*0b57cec5SDimitry Andric        }
1683*0b57cec5SDimitry Andric
1684*0b57cec5SDimitry Andric    template <class _Tp>
1685*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1686*0b57cec5SDimitry Andric        static
1687*0b57cec5SDimitry Andric        typename enable_if
1688*0b57cec5SDimitry Andric        <
1689*0b57cec5SDimitry Andric            (__is_default_allocator<allocator_type>::value
1690*0b57cec5SDimitry Andric                || !__has_construct<allocator_type, _Tp*, _Tp>::value) &&
1691*0b57cec5SDimitry Andric             is_trivially_move_constructible<_Tp>::value,
1692*0b57cec5SDimitry Andric            void
1693*0b57cec5SDimitry Andric        >::type
1694*0b57cec5SDimitry Andric        __construct_backward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __end2)
1695*0b57cec5SDimitry Andric        {
1696*0b57cec5SDimitry Andric            ptrdiff_t _Np = __end1 - __begin1;
1697*0b57cec5SDimitry Andric            __end2 -= _Np;
1698*0b57cec5SDimitry Andric            if (_Np > 0)
1699*0b57cec5SDimitry Andric                _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp));
1700*0b57cec5SDimitry Andric        }
1701*0b57cec5SDimitry Andric
1702*0b57cec5SDimitry Andricprivate:
1703*0b57cec5SDimitry Andric
1704*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
1705*0b57cec5SDimitry Andric    static pointer __allocate(allocator_type& __a, size_type __n,
1706*0b57cec5SDimitry Andric        const_void_pointer __hint, true_type)
1707*0b57cec5SDimitry Andric        {return __a.allocate(__n, __hint);}
1708*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
1709*0b57cec5SDimitry Andric    static pointer __allocate(allocator_type& __a, size_type __n,
1710*0b57cec5SDimitry Andric        const_void_pointer, false_type)
1711*0b57cec5SDimitry Andric        {return __a.allocate(__n);}
1712*0b57cec5SDimitry Andric
1713*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_VARIADICS
1714*0b57cec5SDimitry Andric    template <class _Tp, class... _Args>
1715*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1716*0b57cec5SDimitry Andric        static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args)
1717*0b57cec5SDimitry Andric            {__a.construct(__p, _VSTD::forward<_Args>(__args)...);}
1718*0b57cec5SDimitry Andric    template <class _Tp, class... _Args>
1719*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1720*0b57cec5SDimitry Andric        static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args)
1721*0b57cec5SDimitry Andric            {
1722*0b57cec5SDimitry Andric                ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...);
1723*0b57cec5SDimitry Andric            }
1724*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_VARIADICS
1725*0b57cec5SDimitry Andric    template <class _Tp, class _A0>
1726*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1727*0b57cec5SDimitry Andric        static void __construct(true_type, allocator_type& __a, _Tp* __p,
1728*0b57cec5SDimitry Andric                                const _A0& __a0)
1729*0b57cec5SDimitry Andric            {__a.construct(__p, __a0);}
1730*0b57cec5SDimitry Andric    template <class _Tp, class _A0>
1731*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1732*0b57cec5SDimitry Andric        static void __construct(false_type, allocator_type&, _Tp* __p,
1733*0b57cec5SDimitry Andric                                const _A0& __a0)
1734*0b57cec5SDimitry Andric            {
1735*0b57cec5SDimitry Andric                ::new ((void*)__p) _Tp(__a0);
1736*0b57cec5SDimitry Andric            }
1737*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_VARIADICS
1738*0b57cec5SDimitry Andric
1739*0b57cec5SDimitry Andric    template <class _Tp>
1740*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1741*0b57cec5SDimitry Andric        static void __destroy(true_type, allocator_type& __a, _Tp* __p)
1742*0b57cec5SDimitry Andric            {__a.destroy(__p);}
1743*0b57cec5SDimitry Andric    template <class _Tp>
1744*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1745*0b57cec5SDimitry Andric        static void __destroy(false_type, allocator_type&, _Tp* __p)
1746*0b57cec5SDimitry Andric            {
1747*0b57cec5SDimitry Andric                __p->~_Tp();
1748*0b57cec5SDimitry Andric            }
1749*0b57cec5SDimitry Andric
1750*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
1751*0b57cec5SDimitry Andric    static size_type __max_size(true_type, const allocator_type& __a) _NOEXCEPT
1752*0b57cec5SDimitry Andric            {return __a.max_size();}
1753*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
1754*0b57cec5SDimitry Andric    static size_type __max_size(false_type, const allocator_type&) _NOEXCEPT
1755*0b57cec5SDimitry Andric            {return numeric_limits<size_type>::max() / sizeof(value_type);}
1756*0b57cec5SDimitry Andric
1757*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
1758*0b57cec5SDimitry Andric    static allocator_type
1759*0b57cec5SDimitry Andric        __select_on_container_copy_construction(true_type, const allocator_type& __a)
1760*0b57cec5SDimitry Andric            {return __a.select_on_container_copy_construction();}
1761*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
1762*0b57cec5SDimitry Andric    static allocator_type
1763*0b57cec5SDimitry Andric        __select_on_container_copy_construction(false_type, const allocator_type& __a)
1764*0b57cec5SDimitry Andric            {return __a;}
1765*0b57cec5SDimitry Andric};
1766*0b57cec5SDimitry Andric
1767*0b57cec5SDimitry Andrictemplate <class _Traits, class _Tp>
1768*0b57cec5SDimitry Andricstruct __rebind_alloc_helper
1769*0b57cec5SDimitry Andric{
1770*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
1771*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename _Traits::template rebind_alloc<_Tp>        type;
1772*0b57cec5SDimitry Andric#else
1773*0b57cec5SDimitry Andric    typedef typename _Traits::template rebind_alloc<_Tp>::other type;
1774*0b57cec5SDimitry Andric#endif
1775*0b57cec5SDimitry Andric};
1776*0b57cec5SDimitry Andric
1777*0b57cec5SDimitry Andric// allocator
1778*0b57cec5SDimitry Andric
1779*0b57cec5SDimitry Andrictemplate <class _Tp>
1780*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS allocator
1781*0b57cec5SDimitry Andric{
1782*0b57cec5SDimitry Andricpublic:
1783*0b57cec5SDimitry Andric    typedef size_t            size_type;
1784*0b57cec5SDimitry Andric    typedef ptrdiff_t         difference_type;
1785*0b57cec5SDimitry Andric    typedef _Tp*              pointer;
1786*0b57cec5SDimitry Andric    typedef const _Tp*        const_pointer;
1787*0b57cec5SDimitry Andric    typedef _Tp&              reference;
1788*0b57cec5SDimitry Andric    typedef const _Tp&        const_reference;
1789*0b57cec5SDimitry Andric    typedef _Tp               value_type;
1790*0b57cec5SDimitry Andric
1791*0b57cec5SDimitry Andric    typedef true_type propagate_on_container_move_assignment;
1792*0b57cec5SDimitry Andric    typedef true_type is_always_equal;
1793*0b57cec5SDimitry Andric
1794*0b57cec5SDimitry Andric    template <class _Up> struct rebind {typedef allocator<_Up> other;};
1795*0b57cec5SDimitry Andric
1796*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
1797*0b57cec5SDimitry Andric    allocator() _NOEXCEPT {}
1798*0b57cec5SDimitry Andric
1799*0b57cec5SDimitry Andric    template <class _Up>
1800*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
1801*0b57cec5SDimitry Andric    allocator(const allocator<_Up>&) _NOEXCEPT {}
1802*0b57cec5SDimitry Andric
1803*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT
1804*0b57cec5SDimitry Andric        {return _VSTD::addressof(__x);}
1805*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT
1806*0b57cec5SDimitry Andric        {return _VSTD::addressof(__x);}
1807*0b57cec5SDimitry Andric    _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
1808*0b57cec5SDimitry Andric    pointer allocate(size_type __n, allocator<void>::const_pointer = 0)
1809*0b57cec5SDimitry Andric        {
1810*0b57cec5SDimitry Andric        if (__n > max_size())
1811*0b57cec5SDimitry Andric            __throw_length_error("allocator<T>::allocate(size_t n)"
1812*0b57cec5SDimitry Andric                                 " 'n' exceeds maximum supported size");
1813*0b57cec5SDimitry Andric        return static_cast<pointer>(_VSTD::__libcpp_allocate(__n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp)));
1814*0b57cec5SDimitry Andric        }
1815*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type __n) _NOEXCEPT
1816*0b57cec5SDimitry Andric        {_VSTD::__libcpp_deallocate((void*)__p, __n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp));}
1817*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT
1818*0b57cec5SDimitry Andric        {return size_type(~0) / sizeof(_Tp);}
1819*0b57cec5SDimitry Andric#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1820*0b57cec5SDimitry Andric    template <class _Up, class... _Args>
1821*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1822*0b57cec5SDimitry Andric        void
1823*0b57cec5SDimitry Andric        construct(_Up* __p, _Args&&... __args)
1824*0b57cec5SDimitry Andric        {
1825*0b57cec5SDimitry Andric            ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...);
1826*0b57cec5SDimitry Andric        }
1827*0b57cec5SDimitry Andric#else  // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1828*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1829*0b57cec5SDimitry Andric        void
1830*0b57cec5SDimitry Andric        construct(pointer __p)
1831*0b57cec5SDimitry Andric        {
1832*0b57cec5SDimitry Andric            ::new((void*)__p) _Tp();
1833*0b57cec5SDimitry Andric        }
1834*0b57cec5SDimitry Andric# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1835*0b57cec5SDimitry Andric
1836*0b57cec5SDimitry Andric    template <class _A0>
1837*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1838*0b57cec5SDimitry Andric        void
1839*0b57cec5SDimitry Andric        construct(pointer __p, _A0& __a0)
1840*0b57cec5SDimitry Andric        {
1841*0b57cec5SDimitry Andric            ::new((void*)__p) _Tp(__a0);
1842*0b57cec5SDimitry Andric        }
1843*0b57cec5SDimitry Andric    template <class _A0>
1844*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1845*0b57cec5SDimitry Andric        void
1846*0b57cec5SDimitry Andric        construct(pointer __p, const _A0& __a0)
1847*0b57cec5SDimitry Andric        {
1848*0b57cec5SDimitry Andric            ::new((void*)__p) _Tp(__a0);
1849*0b57cec5SDimitry Andric        }
1850*0b57cec5SDimitry Andric# endif  // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1851*0b57cec5SDimitry Andric    template <class _A0, class _A1>
1852*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1853*0b57cec5SDimitry Andric        void
1854*0b57cec5SDimitry Andric        construct(pointer __p, _A0& __a0, _A1& __a1)
1855*0b57cec5SDimitry Andric        {
1856*0b57cec5SDimitry Andric            ::new((void*)__p) _Tp(__a0, __a1);
1857*0b57cec5SDimitry Andric        }
1858*0b57cec5SDimitry Andric    template <class _A0, class _A1>
1859*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1860*0b57cec5SDimitry Andric        void
1861*0b57cec5SDimitry Andric        construct(pointer __p, const _A0& __a0, _A1& __a1)
1862*0b57cec5SDimitry Andric        {
1863*0b57cec5SDimitry Andric            ::new((void*)__p) _Tp(__a0, __a1);
1864*0b57cec5SDimitry Andric        }
1865*0b57cec5SDimitry Andric    template <class _A0, class _A1>
1866*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1867*0b57cec5SDimitry Andric        void
1868*0b57cec5SDimitry Andric        construct(pointer __p, _A0& __a0, const _A1& __a1)
1869*0b57cec5SDimitry Andric        {
1870*0b57cec5SDimitry Andric            ::new((void*)__p) _Tp(__a0, __a1);
1871*0b57cec5SDimitry Andric        }
1872*0b57cec5SDimitry Andric    template <class _A0, class _A1>
1873*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1874*0b57cec5SDimitry Andric        void
1875*0b57cec5SDimitry Andric        construct(pointer __p, const _A0& __a0, const _A1& __a1)
1876*0b57cec5SDimitry Andric        {
1877*0b57cec5SDimitry Andric            ::new((void*)__p) _Tp(__a0, __a1);
1878*0b57cec5SDimitry Andric        }
1879*0b57cec5SDimitry Andric#endif  // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1880*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();}
1881*0b57cec5SDimitry Andric};
1882*0b57cec5SDimitry Andric
1883*0b57cec5SDimitry Andrictemplate <class _Tp>
1884*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS allocator<const _Tp>
1885*0b57cec5SDimitry Andric{
1886*0b57cec5SDimitry Andricpublic:
1887*0b57cec5SDimitry Andric    typedef size_t            size_type;
1888*0b57cec5SDimitry Andric    typedef ptrdiff_t         difference_type;
1889*0b57cec5SDimitry Andric    typedef const _Tp*        pointer;
1890*0b57cec5SDimitry Andric    typedef const _Tp*        const_pointer;
1891*0b57cec5SDimitry Andric    typedef const _Tp&        reference;
1892*0b57cec5SDimitry Andric    typedef const _Tp&        const_reference;
1893*0b57cec5SDimitry Andric    typedef const _Tp         value_type;
1894*0b57cec5SDimitry Andric
1895*0b57cec5SDimitry Andric    typedef true_type propagate_on_container_move_assignment;
1896*0b57cec5SDimitry Andric    typedef true_type is_always_equal;
1897*0b57cec5SDimitry Andric
1898*0b57cec5SDimitry Andric    template <class _Up> struct rebind {typedef allocator<_Up> other;};
1899*0b57cec5SDimitry Andric
1900*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
1901*0b57cec5SDimitry Andric    allocator() _NOEXCEPT {}
1902*0b57cec5SDimitry Andric
1903*0b57cec5SDimitry Andric    template <class _Up>
1904*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
1905*0b57cec5SDimitry Andric    allocator(const allocator<_Up>&) _NOEXCEPT {}
1906*0b57cec5SDimitry Andric
1907*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT
1908*0b57cec5SDimitry Andric        {return _VSTD::addressof(__x);}
1909*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0)
1910*0b57cec5SDimitry Andric    {
1911*0b57cec5SDimitry Andric        if (__n > max_size())
1912*0b57cec5SDimitry Andric            __throw_length_error("allocator<const T>::allocate(size_t n)"
1913*0b57cec5SDimitry Andric                                 " 'n' exceeds maximum supported size");
1914*0b57cec5SDimitry Andric        return static_cast<pointer>(_VSTD::__libcpp_allocate(__n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp)));
1915*0b57cec5SDimitry Andric    }
1916*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type __n) _NOEXCEPT
1917*0b57cec5SDimitry Andric        {_VSTD::__libcpp_deallocate((void*) const_cast<_Tp *>(__p), __n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp));}
1918*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT
1919*0b57cec5SDimitry Andric        {return size_type(~0) / sizeof(_Tp);}
1920*0b57cec5SDimitry Andric#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1921*0b57cec5SDimitry Andric    template <class _Up, class... _Args>
1922*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1923*0b57cec5SDimitry Andric        void
1924*0b57cec5SDimitry Andric        construct(_Up* __p, _Args&&... __args)
1925*0b57cec5SDimitry Andric        {
1926*0b57cec5SDimitry Andric            ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...);
1927*0b57cec5SDimitry Andric        }
1928*0b57cec5SDimitry Andric#else  // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1929*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1930*0b57cec5SDimitry Andric        void
1931*0b57cec5SDimitry Andric        construct(pointer __p)
1932*0b57cec5SDimitry Andric        {
1933*0b57cec5SDimitry Andric            ::new((void*) const_cast<_Tp *>(__p)) _Tp();
1934*0b57cec5SDimitry Andric        }
1935*0b57cec5SDimitry Andric# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1936*0b57cec5SDimitry Andric
1937*0b57cec5SDimitry Andric    template <class _A0>
1938*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1939*0b57cec5SDimitry Andric        void
1940*0b57cec5SDimitry Andric        construct(pointer __p, _A0& __a0)
1941*0b57cec5SDimitry Andric        {
1942*0b57cec5SDimitry Andric            ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0);
1943*0b57cec5SDimitry Andric        }
1944*0b57cec5SDimitry Andric    template <class _A0>
1945*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1946*0b57cec5SDimitry Andric        void
1947*0b57cec5SDimitry Andric        construct(pointer __p, const _A0& __a0)
1948*0b57cec5SDimitry Andric        {
1949*0b57cec5SDimitry Andric            ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0);
1950*0b57cec5SDimitry Andric        }
1951*0b57cec5SDimitry Andric# endif  // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1952*0b57cec5SDimitry Andric    template <class _A0, class _A1>
1953*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1954*0b57cec5SDimitry Andric        void
1955*0b57cec5SDimitry Andric        construct(pointer __p, _A0& __a0, _A1& __a1)
1956*0b57cec5SDimitry Andric        {
1957*0b57cec5SDimitry Andric            ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1);
1958*0b57cec5SDimitry Andric        }
1959*0b57cec5SDimitry Andric    template <class _A0, class _A1>
1960*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1961*0b57cec5SDimitry Andric        void
1962*0b57cec5SDimitry Andric        construct(pointer __p, const _A0& __a0, _A1& __a1)
1963*0b57cec5SDimitry Andric        {
1964*0b57cec5SDimitry Andric            ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1);
1965*0b57cec5SDimitry Andric        }
1966*0b57cec5SDimitry Andric    template <class _A0, class _A1>
1967*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1968*0b57cec5SDimitry Andric        void
1969*0b57cec5SDimitry Andric        construct(pointer __p, _A0& __a0, const _A1& __a1)
1970*0b57cec5SDimitry Andric        {
1971*0b57cec5SDimitry Andric            ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1);
1972*0b57cec5SDimitry Andric        }
1973*0b57cec5SDimitry Andric    template <class _A0, class _A1>
1974*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
1975*0b57cec5SDimitry Andric        void
1976*0b57cec5SDimitry Andric        construct(pointer __p, const _A0& __a0, const _A1& __a1)
1977*0b57cec5SDimitry Andric        {
1978*0b57cec5SDimitry Andric            ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1);
1979*0b57cec5SDimitry Andric        }
1980*0b57cec5SDimitry Andric#endif  // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1981*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();}
1982*0b57cec5SDimitry Andric};
1983*0b57cec5SDimitry Andric
1984*0b57cec5SDimitry Andrictemplate <class _Tp, class _Up>
1985*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
1986*0b57cec5SDimitry Andricbool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;}
1987*0b57cec5SDimitry Andric
1988*0b57cec5SDimitry Andrictemplate <class _Tp, class _Up>
1989*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
1990*0b57cec5SDimitry Andricbool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;}
1991*0b57cec5SDimitry Andric
1992*0b57cec5SDimitry Andrictemplate <class _OutputIterator, class _Tp>
1993*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS raw_storage_iterator
1994*0b57cec5SDimitry Andric    : public iterator<output_iterator_tag,
1995*0b57cec5SDimitry Andric                      _Tp,                                         // purposefully not C++03
1996*0b57cec5SDimitry Andric                      ptrdiff_t,                                   // purposefully not C++03
1997*0b57cec5SDimitry Andric                      _Tp*,                                        // purposefully not C++03
1998*0b57cec5SDimitry Andric                      raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03
1999*0b57cec5SDimitry Andric{
2000*0b57cec5SDimitry Andricprivate:
2001*0b57cec5SDimitry Andric    _OutputIterator __x_;
2002*0b57cec5SDimitry Andricpublic:
2003*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {}
2004*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;}
2005*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element)
2006*0b57cec5SDimitry Andric        {::new(_VSTD::addressof(*__x_)) _Tp(__element); return *this;}
2007*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER >= 14
2008*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element)
2009*0b57cec5SDimitry Andric        {::new(_VSTD::addressof(*__x_)) _Tp(_VSTD::move(__element)); return *this;}
2010*0b57cec5SDimitry Andric#endif
2011*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;}
2012*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY raw_storage_iterator  operator++(int)
2013*0b57cec5SDimitry Andric        {raw_storage_iterator __t(*this); ++__x_; return __t;}
2014*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER >= 14
2015*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; }
2016*0b57cec5SDimitry Andric#endif
2017*0b57cec5SDimitry Andric};
2018*0b57cec5SDimitry Andric
2019*0b57cec5SDimitry Andrictemplate <class _Tp>
2020*0b57cec5SDimitry Andric_LIBCPP_NODISCARD_EXT _LIBCPP_NO_CFI
2021*0b57cec5SDimitry Andricpair<_Tp*, ptrdiff_t>
2022*0b57cec5SDimitry Andricget_temporary_buffer(ptrdiff_t __n) _NOEXCEPT
2023*0b57cec5SDimitry Andric{
2024*0b57cec5SDimitry Andric    pair<_Tp*, ptrdiff_t> __r(0, 0);
2025*0b57cec5SDimitry Andric    const ptrdiff_t __m = (~ptrdiff_t(0) ^
2026*0b57cec5SDimitry Andric                           ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1)))
2027*0b57cec5SDimitry Andric                           / sizeof(_Tp);
2028*0b57cec5SDimitry Andric    if (__n > __m)
2029*0b57cec5SDimitry Andric        __n = __m;
2030*0b57cec5SDimitry Andric    while (__n > 0)
2031*0b57cec5SDimitry Andric    {
2032*0b57cec5SDimitry Andric#if !defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION)
2033*0b57cec5SDimitry Andric    if (__is_overaligned_for_new(_LIBCPP_ALIGNOF(_Tp)))
2034*0b57cec5SDimitry Andric        {
2035*0b57cec5SDimitry Andric            std::align_val_t __al =
2036*0b57cec5SDimitry Andric                std::align_val_t(std::alignment_of<_Tp>::value);
2037*0b57cec5SDimitry Andric            __r.first = static_cast<_Tp*>(::operator new(
2038*0b57cec5SDimitry Andric                __n * sizeof(_Tp), __al, nothrow));
2039*0b57cec5SDimitry Andric        } else {
2040*0b57cec5SDimitry Andric            __r.first = static_cast<_Tp*>(::operator new(
2041*0b57cec5SDimitry Andric                __n * sizeof(_Tp), nothrow));
2042*0b57cec5SDimitry Andric        }
2043*0b57cec5SDimitry Andric#else
2044*0b57cec5SDimitry Andric    if (__is_overaligned_for_new(_LIBCPP_ALIGNOF(_Tp)))
2045*0b57cec5SDimitry Andric        {
2046*0b57cec5SDimitry Andric            // Since aligned operator new is unavailable, return an empty
2047*0b57cec5SDimitry Andric            // buffer rather than one with invalid alignment.
2048*0b57cec5SDimitry Andric            return __r;
2049*0b57cec5SDimitry Andric        }
2050*0b57cec5SDimitry Andric
2051*0b57cec5SDimitry Andric        __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow));
2052*0b57cec5SDimitry Andric#endif
2053*0b57cec5SDimitry Andric
2054*0b57cec5SDimitry Andric        if (__r.first)
2055*0b57cec5SDimitry Andric        {
2056*0b57cec5SDimitry Andric            __r.second = __n;
2057*0b57cec5SDimitry Andric            break;
2058*0b57cec5SDimitry Andric        }
2059*0b57cec5SDimitry Andric        __n /= 2;
2060*0b57cec5SDimitry Andric    }
2061*0b57cec5SDimitry Andric    return __r;
2062*0b57cec5SDimitry Andric}
2063*0b57cec5SDimitry Andric
2064*0b57cec5SDimitry Andrictemplate <class _Tp>
2065*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2066*0b57cec5SDimitry Andricvoid return_temporary_buffer(_Tp* __p) _NOEXCEPT
2067*0b57cec5SDimitry Andric{
2068*0b57cec5SDimitry Andric  _VSTD::__libcpp_deallocate_unsized((void*)__p, _LIBCPP_ALIGNOF(_Tp));
2069*0b57cec5SDimitry Andric}
2070*0b57cec5SDimitry Andric
2071*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
2072*0b57cec5SDimitry Andrictemplate <class _Tp>
2073*0b57cec5SDimitry Andricstruct _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr_ref
2074*0b57cec5SDimitry Andric{
2075*0b57cec5SDimitry Andric    _Tp* __ptr_;
2076*0b57cec5SDimitry Andric};
2077*0b57cec5SDimitry Andric
2078*0b57cec5SDimitry Andrictemplate<class _Tp>
2079*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr
2080*0b57cec5SDimitry Andric{
2081*0b57cec5SDimitry Andricprivate:
2082*0b57cec5SDimitry Andric    _Tp* __ptr_;
2083*0b57cec5SDimitry Andricpublic:
2084*0b57cec5SDimitry Andric    typedef _Tp element_type;
2085*0b57cec5SDimitry Andric
2086*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {}
2087*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {}
2088*0b57cec5SDimitry Andric    template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw()
2089*0b57cec5SDimitry Andric        : __ptr_(__p.release()) {}
2090*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw()
2091*0b57cec5SDimitry Andric        {reset(__p.release()); return *this;}
2092*0b57cec5SDimitry Andric    template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw()
2093*0b57cec5SDimitry Andric        {reset(__p.release()); return *this;}
2094*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw()
2095*0b57cec5SDimitry Andric        {reset(__p.__ptr_); return *this;}
2096*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;}
2097*0b57cec5SDimitry Andric
2098*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw()
2099*0b57cec5SDimitry Andric        {return *__ptr_;}
2100*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;}
2101*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;}
2102*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY _Tp* release() throw()
2103*0b57cec5SDimitry Andric    {
2104*0b57cec5SDimitry Andric        _Tp* __t = __ptr_;
2105*0b57cec5SDimitry Andric        __ptr_ = 0;
2106*0b57cec5SDimitry Andric        return __t;
2107*0b57cec5SDimitry Andric    }
2108*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw()
2109*0b57cec5SDimitry Andric    {
2110*0b57cec5SDimitry Andric        if (__ptr_ != __p)
2111*0b57cec5SDimitry Andric            delete __ptr_;
2112*0b57cec5SDimitry Andric        __ptr_ = __p;
2113*0b57cec5SDimitry Andric    }
2114*0b57cec5SDimitry Andric
2115*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {}
2116*0b57cec5SDimitry Andric    template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw()
2117*0b57cec5SDimitry Andric        {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;}
2118*0b57cec5SDimitry Andric    template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw()
2119*0b57cec5SDimitry Andric        {return auto_ptr<_Up>(release());}
2120*0b57cec5SDimitry Andric};
2121*0b57cec5SDimitry Andric
2122*0b57cec5SDimitry Andrictemplate <>
2123*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 auto_ptr<void>
2124*0b57cec5SDimitry Andric{
2125*0b57cec5SDimitry Andricpublic:
2126*0b57cec5SDimitry Andric    typedef void element_type;
2127*0b57cec5SDimitry Andric};
2128*0b57cec5SDimitry Andric#endif
2129*0b57cec5SDimitry Andric
2130*0b57cec5SDimitry Andrictemplate <class _Tp, int _Idx,
2131*0b57cec5SDimitry Andric          bool _CanBeEmptyBase =
2132*0b57cec5SDimitry Andric              is_empty<_Tp>::value && !__libcpp_is_final<_Tp>::value>
2133*0b57cec5SDimitry Andricstruct __compressed_pair_elem {
2134*0b57cec5SDimitry Andric  typedef _Tp _ParamT;
2135*0b57cec5SDimitry Andric  typedef _Tp& reference;
2136*0b57cec5SDimitry Andric  typedef const _Tp& const_reference;
2137*0b57cec5SDimitry Andric
2138*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
2139*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY constexpr __compressed_pair_elem() : __value_() {}
2140*0b57cec5SDimitry Andric
2141*0b57cec5SDimitry Andric  template <class _Up, class = typename enable_if<
2142*0b57cec5SDimitry Andric      !is_same<__compressed_pair_elem, typename decay<_Up>::type>::value
2143*0b57cec5SDimitry Andric  >::type>
2144*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2145*0b57cec5SDimitry Andric  constexpr explicit
2146*0b57cec5SDimitry Andric  __compressed_pair_elem(_Up&& __u)
2147*0b57cec5SDimitry Andric      : __value_(_VSTD::forward<_Up>(__u))
2148*0b57cec5SDimitry Andric    {
2149*0b57cec5SDimitry Andric    }
2150*0b57cec5SDimitry Andric
2151*0b57cec5SDimitry Andric  template <class... _Args, size_t... _Indexes>
2152*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
2153*0b57cec5SDimitry Andric  __compressed_pair_elem(piecewise_construct_t, tuple<_Args...> __args,
2154*0b57cec5SDimitry Andric                         __tuple_indices<_Indexes...>)
2155*0b57cec5SDimitry Andric      : __value_(_VSTD::forward<_Args>(_VSTD::get<_Indexes>(__args))...) {}
2156*0b57cec5SDimitry Andric#else
2157*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY __compressed_pair_elem() : __value_() {}
2158*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2159*0b57cec5SDimitry Andric  __compressed_pair_elem(_ParamT __p) : __value_(std::forward<_ParamT>(__p)) {}
2160*0b57cec5SDimitry Andric#endif
2161*0b57cec5SDimitry Andric
2162*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY reference __get() _NOEXCEPT { return __value_; }
2163*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2164*0b57cec5SDimitry Andric  const_reference __get() const _NOEXCEPT { return __value_; }
2165*0b57cec5SDimitry Andric
2166*0b57cec5SDimitry Andricprivate:
2167*0b57cec5SDimitry Andric  _Tp __value_;
2168*0b57cec5SDimitry Andric};
2169*0b57cec5SDimitry Andric
2170*0b57cec5SDimitry Andrictemplate <class _Tp, int _Idx>
2171*0b57cec5SDimitry Andricstruct __compressed_pair_elem<_Tp, _Idx, true> : private _Tp {
2172*0b57cec5SDimitry Andric  typedef _Tp _ParamT;
2173*0b57cec5SDimitry Andric  typedef _Tp& reference;
2174*0b57cec5SDimitry Andric  typedef const _Tp& const_reference;
2175*0b57cec5SDimitry Andric  typedef _Tp __value_type;
2176*0b57cec5SDimitry Andric
2177*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
2178*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY constexpr __compressed_pair_elem() = default;
2179*0b57cec5SDimitry Andric
2180*0b57cec5SDimitry Andric  template <class _Up, class = typename enable_if<
2181*0b57cec5SDimitry Andric        !is_same<__compressed_pair_elem, typename decay<_Up>::type>::value
2182*0b57cec5SDimitry Andric  >::type>
2183*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2184*0b57cec5SDimitry Andric  constexpr explicit
2185*0b57cec5SDimitry Andric  __compressed_pair_elem(_Up&& __u)
2186*0b57cec5SDimitry Andric      : __value_type(_VSTD::forward<_Up>(__u))
2187*0b57cec5SDimitry Andric  {}
2188*0b57cec5SDimitry Andric
2189*0b57cec5SDimitry Andric  template <class... _Args, size_t... _Indexes>
2190*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
2191*0b57cec5SDimitry Andric  __compressed_pair_elem(piecewise_construct_t, tuple<_Args...> __args,
2192*0b57cec5SDimitry Andric                         __tuple_indices<_Indexes...>)
2193*0b57cec5SDimitry Andric      : __value_type(_VSTD::forward<_Args>(_VSTD::get<_Indexes>(__args))...) {}
2194*0b57cec5SDimitry Andric#else
2195*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY __compressed_pair_elem() : __value_type() {}
2196*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2197*0b57cec5SDimitry Andric  __compressed_pair_elem(_ParamT __p)
2198*0b57cec5SDimitry Andric      : __value_type(std::forward<_ParamT>(__p)) {}
2199*0b57cec5SDimitry Andric#endif
2200*0b57cec5SDimitry Andric
2201*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY reference __get() _NOEXCEPT { return *this; }
2202*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2203*0b57cec5SDimitry Andric  const_reference __get() const _NOEXCEPT { return *this; }
2204*0b57cec5SDimitry Andric};
2205*0b57cec5SDimitry Andric
2206*0b57cec5SDimitry Andric// Tag used to construct the second element of the compressed pair.
2207*0b57cec5SDimitry Andricstruct __second_tag {};
2208*0b57cec5SDimitry Andric
2209*0b57cec5SDimitry Andrictemplate <class _T1, class _T2>
2210*0b57cec5SDimitry Andricclass __compressed_pair : private __compressed_pair_elem<_T1, 0>,
2211*0b57cec5SDimitry Andric                          private __compressed_pair_elem<_T2, 1> {
2212*0b57cec5SDimitry Andric  typedef _LIBCPP_NODEBUG_TYPE __compressed_pair_elem<_T1, 0> _Base1;
2213*0b57cec5SDimitry Andric  typedef _LIBCPP_NODEBUG_TYPE __compressed_pair_elem<_T2, 1> _Base2;
2214*0b57cec5SDimitry Andric
2215*0b57cec5SDimitry Andric  // NOTE: This static assert should never fire because __compressed_pair
2216*0b57cec5SDimitry Andric  // is *almost never* used in a scenario where it's possible for T1 == T2.
2217*0b57cec5SDimitry Andric  // (The exception is std::function where it is possible that the function
2218*0b57cec5SDimitry Andric  //  object and the allocator have the same type).
2219*0b57cec5SDimitry Andric  static_assert((!is_same<_T1, _T2>::value),
2220*0b57cec5SDimitry Andric    "__compressed_pair cannot be instantated when T1 and T2 are the same type; "
2221*0b57cec5SDimitry Andric    "The current implementation is NOT ABI-compatible with the previous "
2222*0b57cec5SDimitry Andric    "implementation for this configuration");
2223*0b57cec5SDimitry Andric
2224*0b57cec5SDimitry Andricpublic:
2225*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
2226*0b57cec5SDimitry Andric  template <bool _Dummy = true,
2227*0b57cec5SDimitry Andric      class = typename enable_if<
2228*0b57cec5SDimitry Andric          __dependent_type<is_default_constructible<_T1>, _Dummy>::value &&
2229*0b57cec5SDimitry Andric          __dependent_type<is_default_constructible<_T2>, _Dummy>::value
2230*0b57cec5SDimitry Andric      >::type
2231*0b57cec5SDimitry Andric  >
2232*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2233*0b57cec5SDimitry Andric  constexpr __compressed_pair() {}
2234*0b57cec5SDimitry Andric
2235*0b57cec5SDimitry Andric  template <class _Tp, typename enable_if<!is_same<typename decay<_Tp>::type,
2236*0b57cec5SDimitry Andric                                                   __compressed_pair>::value,
2237*0b57cec5SDimitry Andric                                          bool>::type = true>
2238*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY constexpr explicit
2239*0b57cec5SDimitry Andric  __compressed_pair(_Tp&& __t)
2240*0b57cec5SDimitry Andric      : _Base1(std::forward<_Tp>(__t)), _Base2() {}
2241*0b57cec5SDimitry Andric
2242*0b57cec5SDimitry Andric  template <class _Tp>
2243*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY constexpr
2244*0b57cec5SDimitry Andric  __compressed_pair(__second_tag, _Tp&& __t)
2245*0b57cec5SDimitry Andric      : _Base1(), _Base2(std::forward<_Tp>(__t)) {}
2246*0b57cec5SDimitry Andric
2247*0b57cec5SDimitry Andric  template <class _U1, class _U2>
2248*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY constexpr
2249*0b57cec5SDimitry Andric  __compressed_pair(_U1&& __t1, _U2&& __t2)
2250*0b57cec5SDimitry Andric      : _Base1(std::forward<_U1>(__t1)), _Base2(std::forward<_U2>(__t2)) {}
2251*0b57cec5SDimitry Andric
2252*0b57cec5SDimitry Andric  template <class... _Args1, class... _Args2>
2253*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
2254*0b57cec5SDimitry Andric  __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args,
2255*0b57cec5SDimitry Andric                    tuple<_Args2...> __second_args)
2256*0b57cec5SDimitry Andric      : _Base1(__pc, _VSTD::move(__first_args),
2257*0b57cec5SDimitry Andric               typename __make_tuple_indices<sizeof...(_Args1)>::type()),
2258*0b57cec5SDimitry Andric        _Base2(__pc, _VSTD::move(__second_args),
2259*0b57cec5SDimitry Andric               typename __make_tuple_indices<sizeof...(_Args2)>::type()) {}
2260*0b57cec5SDimitry Andric
2261*0b57cec5SDimitry Andric#else
2262*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2263*0b57cec5SDimitry Andric  __compressed_pair() {}
2264*0b57cec5SDimitry Andric
2265*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY explicit
2266*0b57cec5SDimitry Andric  __compressed_pair(_T1 __t1) : _Base1(_VSTD::forward<_T1>(__t1)) {}
2267*0b57cec5SDimitry Andric
2268*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2269*0b57cec5SDimitry Andric  __compressed_pair(__second_tag, _T2 __t2)
2270*0b57cec5SDimitry Andric      : _Base1(), _Base2(_VSTD::forward<_T2>(__t2)) {}
2271*0b57cec5SDimitry Andric
2272*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2273*0b57cec5SDimitry Andric  __compressed_pair(_T1 __t1, _T2 __t2)
2274*0b57cec5SDimitry Andric      : _Base1(_VSTD::forward<_T1>(__t1)), _Base2(_VSTD::forward<_T2>(__t2)) {}
2275*0b57cec5SDimitry Andric#endif
2276*0b57cec5SDimitry Andric
2277*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2278*0b57cec5SDimitry Andric  typename _Base1::reference first() _NOEXCEPT {
2279*0b57cec5SDimitry Andric    return static_cast<_Base1&>(*this).__get();
2280*0b57cec5SDimitry Andric  }
2281*0b57cec5SDimitry Andric
2282*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2283*0b57cec5SDimitry Andric  typename _Base1::const_reference first() const _NOEXCEPT {
2284*0b57cec5SDimitry Andric    return static_cast<_Base1 const&>(*this).__get();
2285*0b57cec5SDimitry Andric  }
2286*0b57cec5SDimitry Andric
2287*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2288*0b57cec5SDimitry Andric  typename _Base2::reference second() _NOEXCEPT {
2289*0b57cec5SDimitry Andric    return static_cast<_Base2&>(*this).__get();
2290*0b57cec5SDimitry Andric  }
2291*0b57cec5SDimitry Andric
2292*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2293*0b57cec5SDimitry Andric  typename _Base2::const_reference second() const _NOEXCEPT {
2294*0b57cec5SDimitry Andric    return static_cast<_Base2 const&>(*this).__get();
2295*0b57cec5SDimitry Andric  }
2296*0b57cec5SDimitry Andric
2297*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2298*0b57cec5SDimitry Andric  void swap(__compressed_pair& __x)
2299*0b57cec5SDimitry Andric    _NOEXCEPT_(__is_nothrow_swappable<_T1>::value &&
2300*0b57cec5SDimitry Andric               __is_nothrow_swappable<_T2>::value)
2301*0b57cec5SDimitry Andric  {
2302*0b57cec5SDimitry Andric    using std::swap;
2303*0b57cec5SDimitry Andric    swap(first(), __x.first());
2304*0b57cec5SDimitry Andric    swap(second(), __x.second());
2305*0b57cec5SDimitry Andric  }
2306*0b57cec5SDimitry Andric};
2307*0b57cec5SDimitry Andric
2308*0b57cec5SDimitry Andrictemplate <class _T1, class _T2>
2309*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2310*0b57cec5SDimitry Andricvoid swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y)
2311*0b57cec5SDimitry Andric    _NOEXCEPT_(__is_nothrow_swappable<_T1>::value &&
2312*0b57cec5SDimitry Andric               __is_nothrow_swappable<_T2>::value) {
2313*0b57cec5SDimitry Andric  __x.swap(__y);
2314*0b57cec5SDimitry Andric}
2315*0b57cec5SDimitry Andric
2316*0b57cec5SDimitry Andric// default_delete
2317*0b57cec5SDimitry Andric
2318*0b57cec5SDimitry Andrictemplate <class _Tp>
2319*0b57cec5SDimitry Andricstruct _LIBCPP_TEMPLATE_VIS default_delete {
2320*0b57cec5SDimitry Andric    static_assert(!is_function<_Tp>::value,
2321*0b57cec5SDimitry Andric                  "default_delete cannot be instantiated for function types");
2322*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
2323*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY constexpr default_delete() _NOEXCEPT = default;
2324*0b57cec5SDimitry Andric#else
2325*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY default_delete() {}
2326*0b57cec5SDimitry Andric#endif
2327*0b57cec5SDimitry Andric  template <class _Up>
2328*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2329*0b57cec5SDimitry Andric  default_delete(const default_delete<_Up>&,
2330*0b57cec5SDimitry Andric                 typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* =
2331*0b57cec5SDimitry Andric                     0) _NOEXCEPT {}
2332*0b57cec5SDimitry Andric
2333*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __ptr) const _NOEXCEPT {
2334*0b57cec5SDimitry Andric    static_assert(sizeof(_Tp) > 0,
2335*0b57cec5SDimitry Andric                  "default_delete can not delete incomplete type");
2336*0b57cec5SDimitry Andric    static_assert(!is_void<_Tp>::value,
2337*0b57cec5SDimitry Andric                  "default_delete can not delete incomplete type");
2338*0b57cec5SDimitry Andric    delete __ptr;
2339*0b57cec5SDimitry Andric  }
2340*0b57cec5SDimitry Andric};
2341*0b57cec5SDimitry Andric
2342*0b57cec5SDimitry Andrictemplate <class _Tp>
2343*0b57cec5SDimitry Andricstruct _LIBCPP_TEMPLATE_VIS default_delete<_Tp[]> {
2344*0b57cec5SDimitry Andricprivate:
2345*0b57cec5SDimitry Andric  template <class _Up>
2346*0b57cec5SDimitry Andric  struct _EnableIfConvertible
2347*0b57cec5SDimitry Andric      : enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value> {};
2348*0b57cec5SDimitry Andric
2349*0b57cec5SDimitry Andricpublic:
2350*0b57cec5SDimitry Andric#ifndef _LIBCPP_CXX03_LANG
2351*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY constexpr default_delete() _NOEXCEPT = default;
2352*0b57cec5SDimitry Andric#else
2353*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY default_delete() {}
2354*0b57cec5SDimitry Andric#endif
2355*0b57cec5SDimitry Andric
2356*0b57cec5SDimitry Andric  template <class _Up>
2357*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2358*0b57cec5SDimitry Andric  default_delete(const default_delete<_Up[]>&,
2359*0b57cec5SDimitry Andric                 typename _EnableIfConvertible<_Up>::type* = 0) _NOEXCEPT {}
2360*0b57cec5SDimitry Andric
2361*0b57cec5SDimitry Andric  template <class _Up>
2362*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2363*0b57cec5SDimitry Andric  typename _EnableIfConvertible<_Up>::type
2364*0b57cec5SDimitry Andric  operator()(_Up* __ptr) const _NOEXCEPT {
2365*0b57cec5SDimitry Andric    static_assert(sizeof(_Tp) > 0,
2366*0b57cec5SDimitry Andric                  "default_delete can not delete incomplete type");
2367*0b57cec5SDimitry Andric    static_assert(!is_void<_Tp>::value,
2368*0b57cec5SDimitry Andric                  "default_delete can not delete void type");
2369*0b57cec5SDimitry Andric    delete[] __ptr;
2370*0b57cec5SDimitry Andric  }
2371*0b57cec5SDimitry Andric};
2372*0b57cec5SDimitry Andric
2373*0b57cec5SDimitry Andrictemplate <class _Deleter>
2374*0b57cec5SDimitry Andricstruct __unique_ptr_deleter_sfinae {
2375*0b57cec5SDimitry Andric  static_assert(!is_reference<_Deleter>::value, "incorrect specialization");
2376*0b57cec5SDimitry Andric  typedef const _Deleter& __lval_ref_type;
2377*0b57cec5SDimitry Andric  typedef _Deleter&& __good_rval_ref_type;
2378*0b57cec5SDimitry Andric  typedef true_type __enable_rval_overload;
2379*0b57cec5SDimitry Andric};
2380*0b57cec5SDimitry Andric
2381*0b57cec5SDimitry Andrictemplate <class _Deleter>
2382*0b57cec5SDimitry Andricstruct __unique_ptr_deleter_sfinae<_Deleter const&> {
2383*0b57cec5SDimitry Andric  typedef const _Deleter& __lval_ref_type;
2384*0b57cec5SDimitry Andric  typedef const _Deleter&& __bad_rval_ref_type;
2385*0b57cec5SDimitry Andric  typedef false_type __enable_rval_overload;
2386*0b57cec5SDimitry Andric};
2387*0b57cec5SDimitry Andric
2388*0b57cec5SDimitry Andrictemplate <class _Deleter>
2389*0b57cec5SDimitry Andricstruct __unique_ptr_deleter_sfinae<_Deleter&> {
2390*0b57cec5SDimitry Andric  typedef _Deleter& __lval_ref_type;
2391*0b57cec5SDimitry Andric  typedef _Deleter&& __bad_rval_ref_type;
2392*0b57cec5SDimitry Andric  typedef false_type __enable_rval_overload;
2393*0b57cec5SDimitry Andric};
2394*0b57cec5SDimitry Andric
2395*0b57cec5SDimitry Andrictemplate <class _Tp, class _Dp = default_delete<_Tp> >
2396*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS unique_ptr {
2397*0b57cec5SDimitry Andricpublic:
2398*0b57cec5SDimitry Andric  typedef _Tp element_type;
2399*0b57cec5SDimitry Andric  typedef _Dp deleter_type;
2400*0b57cec5SDimitry Andric  typedef _LIBCPP_NODEBUG_TYPE typename __pointer_type<_Tp, deleter_type>::type pointer;
2401*0b57cec5SDimitry Andric
2402*0b57cec5SDimitry Andric  static_assert(!is_rvalue_reference<deleter_type>::value,
2403*0b57cec5SDimitry Andric                "the specified deleter type cannot be an rvalue reference");
2404*0b57cec5SDimitry Andric
2405*0b57cec5SDimitry Andricprivate:
2406*0b57cec5SDimitry Andric  __compressed_pair<pointer, deleter_type> __ptr_;
2407*0b57cec5SDimitry Andric
2408*0b57cec5SDimitry Andric  struct __nat { int __for_bool_; };
2409*0b57cec5SDimitry Andric
2410*0b57cec5SDimitry Andric  typedef _LIBCPP_NODEBUG_TYPE __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE;
2411*0b57cec5SDimitry Andric
2412*0b57cec5SDimitry Andric  template <bool _Dummy>
2413*0b57cec5SDimitry Andric  using _LValRefType _LIBCPP_NODEBUG_TYPE =
2414*0b57cec5SDimitry Andric      typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type;
2415*0b57cec5SDimitry Andric
2416*0b57cec5SDimitry Andric  template <bool _Dummy>
2417*0b57cec5SDimitry Andric  using _GoodRValRefType _LIBCPP_NODEBUG_TYPE =
2418*0b57cec5SDimitry Andric      typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type;
2419*0b57cec5SDimitry Andric
2420*0b57cec5SDimitry Andric  template <bool _Dummy>
2421*0b57cec5SDimitry Andric  using _BadRValRefType _LIBCPP_NODEBUG_TYPE  =
2422*0b57cec5SDimitry Andric      typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type;
2423*0b57cec5SDimitry Andric
2424*0b57cec5SDimitry Andric  template <bool _Dummy, class _Deleter = typename __dependent_type<
2425*0b57cec5SDimitry Andric                             __identity<deleter_type>, _Dummy>::type>
2426*0b57cec5SDimitry Andric  using _EnableIfDeleterDefaultConstructible _LIBCPP_NODEBUG_TYPE =
2427*0b57cec5SDimitry Andric      typename enable_if<is_default_constructible<_Deleter>::value &&
2428*0b57cec5SDimitry Andric                         !is_pointer<_Deleter>::value>::type;
2429*0b57cec5SDimitry Andric
2430*0b57cec5SDimitry Andric  template <class _ArgType>
2431*0b57cec5SDimitry Andric  using _EnableIfDeleterConstructible _LIBCPP_NODEBUG_TYPE  =
2432*0b57cec5SDimitry Andric      typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type;
2433*0b57cec5SDimitry Andric
2434*0b57cec5SDimitry Andric  template <class _UPtr, class _Up>
2435*0b57cec5SDimitry Andric  using _EnableIfMoveConvertible _LIBCPP_NODEBUG_TYPE  = typename enable_if<
2436*0b57cec5SDimitry Andric      is_convertible<typename _UPtr::pointer, pointer>::value &&
2437*0b57cec5SDimitry Andric      !is_array<_Up>::value
2438*0b57cec5SDimitry Andric  >::type;
2439*0b57cec5SDimitry Andric
2440*0b57cec5SDimitry Andric  template <class _UDel>
2441*0b57cec5SDimitry Andric  using _EnableIfDeleterConvertible _LIBCPP_NODEBUG_TYPE  = typename enable_if<
2442*0b57cec5SDimitry Andric      (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) ||
2443*0b57cec5SDimitry Andric      (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value)
2444*0b57cec5SDimitry Andric    >::type;
2445*0b57cec5SDimitry Andric
2446*0b57cec5SDimitry Andric  template <class _UDel>
2447*0b57cec5SDimitry Andric  using _EnableIfDeleterAssignable = typename enable_if<
2448*0b57cec5SDimitry Andric      is_assignable<_Dp&, _UDel&&>::value
2449*0b57cec5SDimitry Andric    >::type;
2450*0b57cec5SDimitry Andric
2451*0b57cec5SDimitry Andricpublic:
2452*0b57cec5SDimitry Andric  template <bool _Dummy = true,
2453*0b57cec5SDimitry Andric            class = _EnableIfDeleterDefaultConstructible<_Dummy> >
2454*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2455*0b57cec5SDimitry Andric  _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT : __ptr_(pointer()) {}
2456*0b57cec5SDimitry Andric
2457*0b57cec5SDimitry Andric  template <bool _Dummy = true,
2458*0b57cec5SDimitry Andric            class = _EnableIfDeleterDefaultConstructible<_Dummy> >
2459*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2460*0b57cec5SDimitry Andric  _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT : __ptr_(pointer()) {}
2461*0b57cec5SDimitry Andric
2462*0b57cec5SDimitry Andric  template <bool _Dummy = true,
2463*0b57cec5SDimitry Andric            class = _EnableIfDeleterDefaultConstructible<_Dummy> >
2464*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2465*0b57cec5SDimitry Andric  explicit unique_ptr(pointer __p) _NOEXCEPT : __ptr_(__p) {}
2466*0b57cec5SDimitry Andric
2467*0b57cec5SDimitry Andric  template <bool _Dummy = true,
2468*0b57cec5SDimitry Andric            class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> > >
2469*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2470*0b57cec5SDimitry Andric  unique_ptr(pointer __p, _LValRefType<_Dummy> __d) _NOEXCEPT
2471*0b57cec5SDimitry Andric      : __ptr_(__p, __d) {}
2472*0b57cec5SDimitry Andric
2473*0b57cec5SDimitry Andric  template <bool _Dummy = true,
2474*0b57cec5SDimitry Andric            class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> > >
2475*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2476*0b57cec5SDimitry Andric  unique_ptr(pointer __p, _GoodRValRefType<_Dummy> __d) _NOEXCEPT
2477*0b57cec5SDimitry Andric      : __ptr_(__p, _VSTD::move(__d)) {
2478*0b57cec5SDimitry Andric    static_assert(!is_reference<deleter_type>::value,
2479*0b57cec5SDimitry Andric                  "rvalue deleter bound to reference");
2480*0b57cec5SDimitry Andric  }
2481*0b57cec5SDimitry Andric
2482*0b57cec5SDimitry Andric  template <bool _Dummy = true,
2483*0b57cec5SDimitry Andric            class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy> > >
2484*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2485*0b57cec5SDimitry Andric  unique_ptr(pointer __p, _BadRValRefType<_Dummy> __d) = delete;
2486*0b57cec5SDimitry Andric
2487*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2488*0b57cec5SDimitry Andric  unique_ptr(unique_ptr&& __u) _NOEXCEPT
2489*0b57cec5SDimitry Andric      : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {
2490*0b57cec5SDimitry Andric  }
2491*0b57cec5SDimitry Andric
2492*0b57cec5SDimitry Andric  template <class _Up, class _Ep,
2493*0b57cec5SDimitry Andric      class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
2494*0b57cec5SDimitry Andric      class = _EnableIfDeleterConvertible<_Ep>
2495*0b57cec5SDimitry Andric  >
2496*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2497*0b57cec5SDimitry Andric  unique_ptr(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT
2498*0b57cec5SDimitry Andric      : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {}
2499*0b57cec5SDimitry Andric
2500*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
2501*0b57cec5SDimitry Andric  template <class _Up>
2502*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2503*0b57cec5SDimitry Andric  unique_ptr(auto_ptr<_Up>&& __p,
2504*0b57cec5SDimitry Andric             typename enable_if<is_convertible<_Up*, _Tp*>::value &&
2505*0b57cec5SDimitry Andric                                    is_same<_Dp, default_delete<_Tp> >::value,
2506*0b57cec5SDimitry Andric                                __nat>::type = __nat()) _NOEXCEPT
2507*0b57cec5SDimitry Andric      : __ptr_(__p.release()) {}
2508*0b57cec5SDimitry Andric#endif
2509*0b57cec5SDimitry Andric
2510*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2511*0b57cec5SDimitry Andric  unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT {
2512*0b57cec5SDimitry Andric    reset(__u.release());
2513*0b57cec5SDimitry Andric    __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter());
2514*0b57cec5SDimitry Andric    return *this;
2515*0b57cec5SDimitry Andric  }
2516*0b57cec5SDimitry Andric
2517*0b57cec5SDimitry Andric  template <class _Up, class _Ep,
2518*0b57cec5SDimitry Andric      class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
2519*0b57cec5SDimitry Andric      class = _EnableIfDeleterAssignable<_Ep>
2520*0b57cec5SDimitry Andric  >
2521*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2522*0b57cec5SDimitry Andric  unique_ptr& operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT {
2523*0b57cec5SDimitry Andric    reset(__u.release());
2524*0b57cec5SDimitry Andric    __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter());
2525*0b57cec5SDimitry Andric    return *this;
2526*0b57cec5SDimitry Andric  }
2527*0b57cec5SDimitry Andric
2528*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
2529*0b57cec5SDimitry Andric  template <class _Up>
2530*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2531*0b57cec5SDimitry Andric      typename enable_if<is_convertible<_Up*, _Tp*>::value &&
2532*0b57cec5SDimitry Andric                             is_same<_Dp, default_delete<_Tp> >::value,
2533*0b57cec5SDimitry Andric                         unique_ptr&>::type
2534*0b57cec5SDimitry Andric      operator=(auto_ptr<_Up> __p) {
2535*0b57cec5SDimitry Andric    reset(__p.release());
2536*0b57cec5SDimitry Andric    return *this;
2537*0b57cec5SDimitry Andric  }
2538*0b57cec5SDimitry Andric#endif
2539*0b57cec5SDimitry Andric
2540*0b57cec5SDimitry Andric#ifdef _LIBCPP_CXX03_LANG
2541*0b57cec5SDimitry Andric  unique_ptr(unique_ptr const&) = delete;
2542*0b57cec5SDimitry Andric  unique_ptr& operator=(unique_ptr const&) = delete;
2543*0b57cec5SDimitry Andric#endif
2544*0b57cec5SDimitry Andric
2545*0b57cec5SDimitry Andric
2546*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2547*0b57cec5SDimitry Andric  ~unique_ptr() { reset(); }
2548*0b57cec5SDimitry Andric
2549*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2550*0b57cec5SDimitry Andric  unique_ptr& operator=(nullptr_t) _NOEXCEPT {
2551*0b57cec5SDimitry Andric    reset();
2552*0b57cec5SDimitry Andric    return *this;
2553*0b57cec5SDimitry Andric  }
2554*0b57cec5SDimitry Andric
2555*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2556*0b57cec5SDimitry Andric  typename add_lvalue_reference<_Tp>::type
2557*0b57cec5SDimitry Andric  operator*() const {
2558*0b57cec5SDimitry Andric    return *__ptr_.first();
2559*0b57cec5SDimitry Andric  }
2560*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2561*0b57cec5SDimitry Andric  pointer operator->() const _NOEXCEPT {
2562*0b57cec5SDimitry Andric    return __ptr_.first();
2563*0b57cec5SDimitry Andric  }
2564*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2565*0b57cec5SDimitry Andric  pointer get() const _NOEXCEPT {
2566*0b57cec5SDimitry Andric    return __ptr_.first();
2567*0b57cec5SDimitry Andric  }
2568*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2569*0b57cec5SDimitry Andric  deleter_type& get_deleter() _NOEXCEPT {
2570*0b57cec5SDimitry Andric    return __ptr_.second();
2571*0b57cec5SDimitry Andric  }
2572*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2573*0b57cec5SDimitry Andric  const deleter_type& get_deleter() const _NOEXCEPT {
2574*0b57cec5SDimitry Andric    return __ptr_.second();
2575*0b57cec5SDimitry Andric  }
2576*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2577*0b57cec5SDimitry Andric  _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {
2578*0b57cec5SDimitry Andric    return __ptr_.first() != nullptr;
2579*0b57cec5SDimitry Andric  }
2580*0b57cec5SDimitry Andric
2581*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2582*0b57cec5SDimitry Andric  pointer release() _NOEXCEPT {
2583*0b57cec5SDimitry Andric    pointer __t = __ptr_.first();
2584*0b57cec5SDimitry Andric    __ptr_.first() = pointer();
2585*0b57cec5SDimitry Andric    return __t;
2586*0b57cec5SDimitry Andric  }
2587*0b57cec5SDimitry Andric
2588*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2589*0b57cec5SDimitry Andric  void reset(pointer __p = pointer()) _NOEXCEPT {
2590*0b57cec5SDimitry Andric    pointer __tmp = __ptr_.first();
2591*0b57cec5SDimitry Andric    __ptr_.first() = __p;
2592*0b57cec5SDimitry Andric    if (__tmp)
2593*0b57cec5SDimitry Andric      __ptr_.second()(__tmp);
2594*0b57cec5SDimitry Andric  }
2595*0b57cec5SDimitry Andric
2596*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2597*0b57cec5SDimitry Andric  void swap(unique_ptr& __u) _NOEXCEPT {
2598*0b57cec5SDimitry Andric    __ptr_.swap(__u.__ptr_);
2599*0b57cec5SDimitry Andric  }
2600*0b57cec5SDimitry Andric};
2601*0b57cec5SDimitry Andric
2602*0b57cec5SDimitry Andric
2603*0b57cec5SDimitry Andrictemplate <class _Tp, class _Dp>
2604*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS unique_ptr<_Tp[], _Dp> {
2605*0b57cec5SDimitry Andricpublic:
2606*0b57cec5SDimitry Andric  typedef _Tp element_type;
2607*0b57cec5SDimitry Andric  typedef _Dp deleter_type;
2608*0b57cec5SDimitry Andric  typedef typename __pointer_type<_Tp, deleter_type>::type pointer;
2609*0b57cec5SDimitry Andric
2610*0b57cec5SDimitry Andricprivate:
2611*0b57cec5SDimitry Andric  __compressed_pair<pointer, deleter_type> __ptr_;
2612*0b57cec5SDimitry Andric
2613*0b57cec5SDimitry Andric  template <class _From>
2614*0b57cec5SDimitry Andric  struct _CheckArrayPointerConversion : is_same<_From, pointer> {};
2615*0b57cec5SDimitry Andric
2616*0b57cec5SDimitry Andric  template <class _FromElem>
2617*0b57cec5SDimitry Andric  struct _CheckArrayPointerConversion<_FromElem*>
2618*0b57cec5SDimitry Andric      : integral_constant<bool,
2619*0b57cec5SDimitry Andric          is_same<_FromElem*, pointer>::value ||
2620*0b57cec5SDimitry Andric            (is_same<pointer, element_type*>::value &&
2621*0b57cec5SDimitry Andric             is_convertible<_FromElem(*)[], element_type(*)[]>::value)
2622*0b57cec5SDimitry Andric      >
2623*0b57cec5SDimitry Andric  {};
2624*0b57cec5SDimitry Andric
2625*0b57cec5SDimitry Andric  typedef __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE;
2626*0b57cec5SDimitry Andric
2627*0b57cec5SDimitry Andric  template <bool _Dummy>
2628*0b57cec5SDimitry Andric  using _LValRefType _LIBCPP_NODEBUG_TYPE =
2629*0b57cec5SDimitry Andric      typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type;
2630*0b57cec5SDimitry Andric
2631*0b57cec5SDimitry Andric  template <bool _Dummy>
2632*0b57cec5SDimitry Andric  using _GoodRValRefType _LIBCPP_NODEBUG_TYPE =
2633*0b57cec5SDimitry Andric      typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type;
2634*0b57cec5SDimitry Andric
2635*0b57cec5SDimitry Andric  template <bool _Dummy>
2636*0b57cec5SDimitry Andric  using _BadRValRefType _LIBCPP_NODEBUG_TYPE =
2637*0b57cec5SDimitry Andric      typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type;
2638*0b57cec5SDimitry Andric
2639*0b57cec5SDimitry Andric  template <bool _Dummy, class _Deleter = typename __dependent_type<
2640*0b57cec5SDimitry Andric                             __identity<deleter_type>, _Dummy>::type>
2641*0b57cec5SDimitry Andric  using _EnableIfDeleterDefaultConstructible _LIBCPP_NODEBUG_TYPE  =
2642*0b57cec5SDimitry Andric      typename enable_if<is_default_constructible<_Deleter>::value &&
2643*0b57cec5SDimitry Andric                         !is_pointer<_Deleter>::value>::type;
2644*0b57cec5SDimitry Andric
2645*0b57cec5SDimitry Andric  template <class _ArgType>
2646*0b57cec5SDimitry Andric  using _EnableIfDeleterConstructible _LIBCPP_NODEBUG_TYPE  =
2647*0b57cec5SDimitry Andric      typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type;
2648*0b57cec5SDimitry Andric
2649*0b57cec5SDimitry Andric  template <class _Pp>
2650*0b57cec5SDimitry Andric  using _EnableIfPointerConvertible _LIBCPP_NODEBUG_TYPE  = typename enable_if<
2651*0b57cec5SDimitry Andric      _CheckArrayPointerConversion<_Pp>::value
2652*0b57cec5SDimitry Andric  >::type;
2653*0b57cec5SDimitry Andric
2654*0b57cec5SDimitry Andric  template <class _UPtr, class _Up,
2655*0b57cec5SDimitry Andric        class _ElemT = typename _UPtr::element_type>
2656*0b57cec5SDimitry Andric  using _EnableIfMoveConvertible _LIBCPP_NODEBUG_TYPE  = typename enable_if<
2657*0b57cec5SDimitry Andric      is_array<_Up>::value &&
2658*0b57cec5SDimitry Andric      is_same<pointer, element_type*>::value &&
2659*0b57cec5SDimitry Andric      is_same<typename _UPtr::pointer, _ElemT*>::value &&
2660*0b57cec5SDimitry Andric      is_convertible<_ElemT(*)[], element_type(*)[]>::value
2661*0b57cec5SDimitry Andric    >::type;
2662*0b57cec5SDimitry Andric
2663*0b57cec5SDimitry Andric  template <class _UDel>
2664*0b57cec5SDimitry Andric  using _EnableIfDeleterConvertible _LIBCPP_NODEBUG_TYPE  = typename enable_if<
2665*0b57cec5SDimitry Andric      (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) ||
2666*0b57cec5SDimitry Andric      (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value)
2667*0b57cec5SDimitry Andric    >::type;
2668*0b57cec5SDimitry Andric
2669*0b57cec5SDimitry Andric  template <class _UDel>
2670*0b57cec5SDimitry Andric  using _EnableIfDeleterAssignable _LIBCPP_NODEBUG_TYPE  = typename enable_if<
2671*0b57cec5SDimitry Andric      is_assignable<_Dp&, _UDel&&>::value
2672*0b57cec5SDimitry Andric    >::type;
2673*0b57cec5SDimitry Andric
2674*0b57cec5SDimitry Andricpublic:
2675*0b57cec5SDimitry Andric  template <bool _Dummy = true,
2676*0b57cec5SDimitry Andric            class = _EnableIfDeleterDefaultConstructible<_Dummy> >
2677*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2678*0b57cec5SDimitry Andric  _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT : __ptr_(pointer()) {}
2679*0b57cec5SDimitry Andric
2680*0b57cec5SDimitry Andric  template <bool _Dummy = true,
2681*0b57cec5SDimitry Andric            class = _EnableIfDeleterDefaultConstructible<_Dummy> >
2682*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2683*0b57cec5SDimitry Andric  _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT : __ptr_(pointer()) {}
2684*0b57cec5SDimitry Andric
2685*0b57cec5SDimitry Andric  template <class _Pp, bool _Dummy = true,
2686*0b57cec5SDimitry Andric            class = _EnableIfDeleterDefaultConstructible<_Dummy>,
2687*0b57cec5SDimitry Andric            class = _EnableIfPointerConvertible<_Pp> >
2688*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2689*0b57cec5SDimitry Andric  explicit unique_ptr(_Pp __p) _NOEXCEPT
2690*0b57cec5SDimitry Andric      : __ptr_(__p) {}
2691*0b57cec5SDimitry Andric
2692*0b57cec5SDimitry Andric  template <class _Pp, bool _Dummy = true,
2693*0b57cec5SDimitry Andric            class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> >,
2694*0b57cec5SDimitry Andric            class = _EnableIfPointerConvertible<_Pp> >
2695*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2696*0b57cec5SDimitry Andric  unique_ptr(_Pp __p, _LValRefType<_Dummy> __d) _NOEXCEPT
2697*0b57cec5SDimitry Andric      : __ptr_(__p, __d) {}
2698*0b57cec5SDimitry Andric
2699*0b57cec5SDimitry Andric  template <bool _Dummy = true,
2700*0b57cec5SDimitry Andric            class = _EnableIfDeleterConstructible<_LValRefType<_Dummy> > >
2701*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2702*0b57cec5SDimitry Andric  unique_ptr(nullptr_t, _LValRefType<_Dummy> __d) _NOEXCEPT
2703*0b57cec5SDimitry Andric      : __ptr_(nullptr, __d) {}
2704*0b57cec5SDimitry Andric
2705*0b57cec5SDimitry Andric  template <class _Pp, bool _Dummy = true,
2706*0b57cec5SDimitry Andric            class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> >,
2707*0b57cec5SDimitry Andric            class = _EnableIfPointerConvertible<_Pp> >
2708*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2709*0b57cec5SDimitry Andric  unique_ptr(_Pp __p, _GoodRValRefType<_Dummy> __d) _NOEXCEPT
2710*0b57cec5SDimitry Andric      : __ptr_(__p, _VSTD::move(__d)) {
2711*0b57cec5SDimitry Andric    static_assert(!is_reference<deleter_type>::value,
2712*0b57cec5SDimitry Andric                  "rvalue deleter bound to reference");
2713*0b57cec5SDimitry Andric  }
2714*0b57cec5SDimitry Andric
2715*0b57cec5SDimitry Andric  template <bool _Dummy = true,
2716*0b57cec5SDimitry Andric            class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy> > >
2717*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2718*0b57cec5SDimitry Andric  unique_ptr(nullptr_t, _GoodRValRefType<_Dummy> __d) _NOEXCEPT
2719*0b57cec5SDimitry Andric      : __ptr_(nullptr, _VSTD::move(__d)) {
2720*0b57cec5SDimitry Andric    static_assert(!is_reference<deleter_type>::value,
2721*0b57cec5SDimitry Andric                  "rvalue deleter bound to reference");
2722*0b57cec5SDimitry Andric  }
2723*0b57cec5SDimitry Andric
2724*0b57cec5SDimitry Andric  template <class _Pp, bool _Dummy = true,
2725*0b57cec5SDimitry Andric            class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy> >,
2726*0b57cec5SDimitry Andric            class = _EnableIfPointerConvertible<_Pp> >
2727*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2728*0b57cec5SDimitry Andric  unique_ptr(_Pp __p, _BadRValRefType<_Dummy> __d) = delete;
2729*0b57cec5SDimitry Andric
2730*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2731*0b57cec5SDimitry Andric  unique_ptr(unique_ptr&& __u) _NOEXCEPT
2732*0b57cec5SDimitry Andric      : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {
2733*0b57cec5SDimitry Andric  }
2734*0b57cec5SDimitry Andric
2735*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2736*0b57cec5SDimitry Andric  unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT {
2737*0b57cec5SDimitry Andric    reset(__u.release());
2738*0b57cec5SDimitry Andric    __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter());
2739*0b57cec5SDimitry Andric    return *this;
2740*0b57cec5SDimitry Andric  }
2741*0b57cec5SDimitry Andric
2742*0b57cec5SDimitry Andric  template <class _Up, class _Ep,
2743*0b57cec5SDimitry Andric      class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
2744*0b57cec5SDimitry Andric      class = _EnableIfDeleterConvertible<_Ep>
2745*0b57cec5SDimitry Andric  >
2746*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2747*0b57cec5SDimitry Andric  unique_ptr(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT
2748*0b57cec5SDimitry Andric      : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {
2749*0b57cec5SDimitry Andric  }
2750*0b57cec5SDimitry Andric
2751*0b57cec5SDimitry Andric  template <class _Up, class _Ep,
2752*0b57cec5SDimitry Andric      class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
2753*0b57cec5SDimitry Andric      class = _EnableIfDeleterAssignable<_Ep>
2754*0b57cec5SDimitry Andric  >
2755*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2756*0b57cec5SDimitry Andric  unique_ptr&
2757*0b57cec5SDimitry Andric  operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT {
2758*0b57cec5SDimitry Andric    reset(__u.release());
2759*0b57cec5SDimitry Andric    __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter());
2760*0b57cec5SDimitry Andric    return *this;
2761*0b57cec5SDimitry Andric  }
2762*0b57cec5SDimitry Andric
2763*0b57cec5SDimitry Andric#ifdef _LIBCPP_CXX03_LANG
2764*0b57cec5SDimitry Andric  unique_ptr(unique_ptr const&) = delete;
2765*0b57cec5SDimitry Andric  unique_ptr& operator=(unique_ptr const&) = delete;
2766*0b57cec5SDimitry Andric#endif
2767*0b57cec5SDimitry Andric
2768*0b57cec5SDimitry Andricpublic:
2769*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2770*0b57cec5SDimitry Andric  ~unique_ptr() { reset(); }
2771*0b57cec5SDimitry Andric
2772*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2773*0b57cec5SDimitry Andric  unique_ptr& operator=(nullptr_t) _NOEXCEPT {
2774*0b57cec5SDimitry Andric    reset();
2775*0b57cec5SDimitry Andric    return *this;
2776*0b57cec5SDimitry Andric  }
2777*0b57cec5SDimitry Andric
2778*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2779*0b57cec5SDimitry Andric  typename add_lvalue_reference<_Tp>::type
2780*0b57cec5SDimitry Andric  operator[](size_t __i) const {
2781*0b57cec5SDimitry Andric    return __ptr_.first()[__i];
2782*0b57cec5SDimitry Andric  }
2783*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2784*0b57cec5SDimitry Andric  pointer get() const _NOEXCEPT {
2785*0b57cec5SDimitry Andric    return __ptr_.first();
2786*0b57cec5SDimitry Andric  }
2787*0b57cec5SDimitry Andric
2788*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2789*0b57cec5SDimitry Andric  deleter_type& get_deleter() _NOEXCEPT {
2790*0b57cec5SDimitry Andric    return __ptr_.second();
2791*0b57cec5SDimitry Andric  }
2792*0b57cec5SDimitry Andric
2793*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2794*0b57cec5SDimitry Andric  const deleter_type& get_deleter() const _NOEXCEPT {
2795*0b57cec5SDimitry Andric    return __ptr_.second();
2796*0b57cec5SDimitry Andric  }
2797*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2798*0b57cec5SDimitry Andric  _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {
2799*0b57cec5SDimitry Andric    return __ptr_.first() != nullptr;
2800*0b57cec5SDimitry Andric  }
2801*0b57cec5SDimitry Andric
2802*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2803*0b57cec5SDimitry Andric  pointer release() _NOEXCEPT {
2804*0b57cec5SDimitry Andric    pointer __t = __ptr_.first();
2805*0b57cec5SDimitry Andric    __ptr_.first() = pointer();
2806*0b57cec5SDimitry Andric    return __t;
2807*0b57cec5SDimitry Andric  }
2808*0b57cec5SDimitry Andric
2809*0b57cec5SDimitry Andric  template <class _Pp>
2810*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2811*0b57cec5SDimitry Andric  typename enable_if<
2812*0b57cec5SDimitry Andric      _CheckArrayPointerConversion<_Pp>::value
2813*0b57cec5SDimitry Andric  >::type
2814*0b57cec5SDimitry Andric  reset(_Pp __p) _NOEXCEPT {
2815*0b57cec5SDimitry Andric    pointer __tmp = __ptr_.first();
2816*0b57cec5SDimitry Andric    __ptr_.first() = __p;
2817*0b57cec5SDimitry Andric    if (__tmp)
2818*0b57cec5SDimitry Andric      __ptr_.second()(__tmp);
2819*0b57cec5SDimitry Andric  }
2820*0b57cec5SDimitry Andric
2821*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2822*0b57cec5SDimitry Andric  void reset(nullptr_t = nullptr) _NOEXCEPT {
2823*0b57cec5SDimitry Andric    pointer __tmp = __ptr_.first();
2824*0b57cec5SDimitry Andric    __ptr_.first() = nullptr;
2825*0b57cec5SDimitry Andric    if (__tmp)
2826*0b57cec5SDimitry Andric      __ptr_.second()(__tmp);
2827*0b57cec5SDimitry Andric  }
2828*0b57cec5SDimitry Andric
2829*0b57cec5SDimitry Andric  _LIBCPP_INLINE_VISIBILITY
2830*0b57cec5SDimitry Andric  void swap(unique_ptr& __u) _NOEXCEPT {
2831*0b57cec5SDimitry Andric    __ptr_.swap(__u.__ptr_);
2832*0b57cec5SDimitry Andric  }
2833*0b57cec5SDimitry Andric
2834*0b57cec5SDimitry Andric};
2835*0b57cec5SDimitry Andric
2836*0b57cec5SDimitry Andrictemplate <class _Tp, class _Dp>
2837*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2838*0b57cec5SDimitry Andrictypename enable_if<
2839*0b57cec5SDimitry Andric    __is_swappable<_Dp>::value,
2840*0b57cec5SDimitry Andric    void
2841*0b57cec5SDimitry Andric>::type
2842*0b57cec5SDimitry Andricswap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);}
2843*0b57cec5SDimitry Andric
2844*0b57cec5SDimitry Andrictemplate <class _T1, class _D1, class _T2, class _D2>
2845*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2846*0b57cec5SDimitry Andricbool
2847*0b57cec5SDimitry Andricoperator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();}
2848*0b57cec5SDimitry Andric
2849*0b57cec5SDimitry Andrictemplate <class _T1, class _D1, class _T2, class _D2>
2850*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2851*0b57cec5SDimitry Andricbool
2852*0b57cec5SDimitry Andricoperator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);}
2853*0b57cec5SDimitry Andric
2854*0b57cec5SDimitry Andrictemplate <class _T1, class _D1, class _T2, class _D2>
2855*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2856*0b57cec5SDimitry Andricbool
2857*0b57cec5SDimitry Andricoperator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y)
2858*0b57cec5SDimitry Andric{
2859*0b57cec5SDimitry Andric    typedef typename unique_ptr<_T1, _D1>::pointer _P1;
2860*0b57cec5SDimitry Andric    typedef typename unique_ptr<_T2, _D2>::pointer _P2;
2861*0b57cec5SDimitry Andric    typedef typename common_type<_P1, _P2>::type _Vp;
2862*0b57cec5SDimitry Andric    return less<_Vp>()(__x.get(), __y.get());
2863*0b57cec5SDimitry Andric}
2864*0b57cec5SDimitry Andric
2865*0b57cec5SDimitry Andrictemplate <class _T1, class _D1, class _T2, class _D2>
2866*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2867*0b57cec5SDimitry Andricbool
2868*0b57cec5SDimitry Andricoperator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;}
2869*0b57cec5SDimitry Andric
2870*0b57cec5SDimitry Andrictemplate <class _T1, class _D1, class _T2, class _D2>
2871*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2872*0b57cec5SDimitry Andricbool
2873*0b57cec5SDimitry Andricoperator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);}
2874*0b57cec5SDimitry Andric
2875*0b57cec5SDimitry Andrictemplate <class _T1, class _D1, class _T2, class _D2>
2876*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2877*0b57cec5SDimitry Andricbool
2878*0b57cec5SDimitry Andricoperator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);}
2879*0b57cec5SDimitry Andric
2880*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2881*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2882*0b57cec5SDimitry Andricbool
2883*0b57cec5SDimitry Andricoperator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT
2884*0b57cec5SDimitry Andric{
2885*0b57cec5SDimitry Andric    return !__x;
2886*0b57cec5SDimitry Andric}
2887*0b57cec5SDimitry Andric
2888*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2889*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2890*0b57cec5SDimitry Andricbool
2891*0b57cec5SDimitry Andricoperator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT
2892*0b57cec5SDimitry Andric{
2893*0b57cec5SDimitry Andric    return !__x;
2894*0b57cec5SDimitry Andric}
2895*0b57cec5SDimitry Andric
2896*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2897*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2898*0b57cec5SDimitry Andricbool
2899*0b57cec5SDimitry Andricoperator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT
2900*0b57cec5SDimitry Andric{
2901*0b57cec5SDimitry Andric    return static_cast<bool>(__x);
2902*0b57cec5SDimitry Andric}
2903*0b57cec5SDimitry Andric
2904*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2905*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2906*0b57cec5SDimitry Andricbool
2907*0b57cec5SDimitry Andricoperator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT
2908*0b57cec5SDimitry Andric{
2909*0b57cec5SDimitry Andric    return static_cast<bool>(__x);
2910*0b57cec5SDimitry Andric}
2911*0b57cec5SDimitry Andric
2912*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2913*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2914*0b57cec5SDimitry Andricbool
2915*0b57cec5SDimitry Andricoperator<(const unique_ptr<_T1, _D1>& __x, nullptr_t)
2916*0b57cec5SDimitry Andric{
2917*0b57cec5SDimitry Andric    typedef typename unique_ptr<_T1, _D1>::pointer _P1;
2918*0b57cec5SDimitry Andric    return less<_P1>()(__x.get(), nullptr);
2919*0b57cec5SDimitry Andric}
2920*0b57cec5SDimitry Andric
2921*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2922*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2923*0b57cec5SDimitry Andricbool
2924*0b57cec5SDimitry Andricoperator<(nullptr_t, const unique_ptr<_T1, _D1>& __x)
2925*0b57cec5SDimitry Andric{
2926*0b57cec5SDimitry Andric    typedef typename unique_ptr<_T1, _D1>::pointer _P1;
2927*0b57cec5SDimitry Andric    return less<_P1>()(nullptr, __x.get());
2928*0b57cec5SDimitry Andric}
2929*0b57cec5SDimitry Andric
2930*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2931*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2932*0b57cec5SDimitry Andricbool
2933*0b57cec5SDimitry Andricoperator>(const unique_ptr<_T1, _D1>& __x, nullptr_t)
2934*0b57cec5SDimitry Andric{
2935*0b57cec5SDimitry Andric    return nullptr < __x;
2936*0b57cec5SDimitry Andric}
2937*0b57cec5SDimitry Andric
2938*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2939*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2940*0b57cec5SDimitry Andricbool
2941*0b57cec5SDimitry Andricoperator>(nullptr_t, const unique_ptr<_T1, _D1>& __x)
2942*0b57cec5SDimitry Andric{
2943*0b57cec5SDimitry Andric    return __x < nullptr;
2944*0b57cec5SDimitry Andric}
2945*0b57cec5SDimitry Andric
2946*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2947*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2948*0b57cec5SDimitry Andricbool
2949*0b57cec5SDimitry Andricoperator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t)
2950*0b57cec5SDimitry Andric{
2951*0b57cec5SDimitry Andric    return !(nullptr < __x);
2952*0b57cec5SDimitry Andric}
2953*0b57cec5SDimitry Andric
2954*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2955*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2956*0b57cec5SDimitry Andricbool
2957*0b57cec5SDimitry Andricoperator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x)
2958*0b57cec5SDimitry Andric{
2959*0b57cec5SDimitry Andric    return !(__x < nullptr);
2960*0b57cec5SDimitry Andric}
2961*0b57cec5SDimitry Andric
2962*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2963*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2964*0b57cec5SDimitry Andricbool
2965*0b57cec5SDimitry Andricoperator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t)
2966*0b57cec5SDimitry Andric{
2967*0b57cec5SDimitry Andric    return !(__x < nullptr);
2968*0b57cec5SDimitry Andric}
2969*0b57cec5SDimitry Andric
2970*0b57cec5SDimitry Andrictemplate <class _T1, class _D1>
2971*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
2972*0b57cec5SDimitry Andricbool
2973*0b57cec5SDimitry Andricoperator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x)
2974*0b57cec5SDimitry Andric{
2975*0b57cec5SDimitry Andric    return !(nullptr < __x);
2976*0b57cec5SDimitry Andric}
2977*0b57cec5SDimitry Andric
2978*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER > 11
2979*0b57cec5SDimitry Andric
2980*0b57cec5SDimitry Andrictemplate<class _Tp>
2981*0b57cec5SDimitry Andricstruct __unique_if
2982*0b57cec5SDimitry Andric{
2983*0b57cec5SDimitry Andric    typedef unique_ptr<_Tp> __unique_single;
2984*0b57cec5SDimitry Andric};
2985*0b57cec5SDimitry Andric
2986*0b57cec5SDimitry Andrictemplate<class _Tp>
2987*0b57cec5SDimitry Andricstruct __unique_if<_Tp[]>
2988*0b57cec5SDimitry Andric{
2989*0b57cec5SDimitry Andric    typedef unique_ptr<_Tp[]> __unique_array_unknown_bound;
2990*0b57cec5SDimitry Andric};
2991*0b57cec5SDimitry Andric
2992*0b57cec5SDimitry Andrictemplate<class _Tp, size_t _Np>
2993*0b57cec5SDimitry Andricstruct __unique_if<_Tp[_Np]>
2994*0b57cec5SDimitry Andric{
2995*0b57cec5SDimitry Andric    typedef void __unique_array_known_bound;
2996*0b57cec5SDimitry Andric};
2997*0b57cec5SDimitry Andric
2998*0b57cec5SDimitry Andrictemplate<class _Tp, class... _Args>
2999*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
3000*0b57cec5SDimitry Andrictypename __unique_if<_Tp>::__unique_single
3001*0b57cec5SDimitry Andricmake_unique(_Args&&... __args)
3002*0b57cec5SDimitry Andric{
3003*0b57cec5SDimitry Andric    return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...));
3004*0b57cec5SDimitry Andric}
3005*0b57cec5SDimitry Andric
3006*0b57cec5SDimitry Andrictemplate<class _Tp>
3007*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
3008*0b57cec5SDimitry Andrictypename __unique_if<_Tp>::__unique_array_unknown_bound
3009*0b57cec5SDimitry Andricmake_unique(size_t __n)
3010*0b57cec5SDimitry Andric{
3011*0b57cec5SDimitry Andric    typedef typename remove_extent<_Tp>::type _Up;
3012*0b57cec5SDimitry Andric    return unique_ptr<_Tp>(new _Up[__n]());
3013*0b57cec5SDimitry Andric}
3014*0b57cec5SDimitry Andric
3015*0b57cec5SDimitry Andrictemplate<class _Tp, class... _Args>
3016*0b57cec5SDimitry Andric    typename __unique_if<_Tp>::__unique_array_known_bound
3017*0b57cec5SDimitry Andric    make_unique(_Args&&...) = delete;
3018*0b57cec5SDimitry Andric
3019*0b57cec5SDimitry Andric#endif  // _LIBCPP_STD_VER > 11
3020*0b57cec5SDimitry Andric
3021*0b57cec5SDimitry Andrictemplate <class _Tp, class _Dp>
3022*0b57cec5SDimitry Andric#ifdef _LIBCPP_CXX03_LANG
3023*0b57cec5SDimitry Andricstruct _LIBCPP_TEMPLATE_VIS hash<unique_ptr<_Tp, _Dp> >
3024*0b57cec5SDimitry Andric#else
3025*0b57cec5SDimitry Andricstruct _LIBCPP_TEMPLATE_VIS hash<__enable_hash_helper<
3026*0b57cec5SDimitry Andric    unique_ptr<_Tp, _Dp>, typename unique_ptr<_Tp, _Dp>::pointer> >
3027*0b57cec5SDimitry Andric#endif
3028*0b57cec5SDimitry Andric{
3029*0b57cec5SDimitry Andric    typedef unique_ptr<_Tp, _Dp> argument_type;
3030*0b57cec5SDimitry Andric    typedef size_t               result_type;
3031*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3032*0b57cec5SDimitry Andric    result_type operator()(const argument_type& __ptr) const
3033*0b57cec5SDimitry Andric    {
3034*0b57cec5SDimitry Andric        typedef typename argument_type::pointer pointer;
3035*0b57cec5SDimitry Andric        return hash<pointer>()(__ptr.get());
3036*0b57cec5SDimitry Andric    }
3037*0b57cec5SDimitry Andric};
3038*0b57cec5SDimitry Andric
3039*0b57cec5SDimitry Andricstruct __destruct_n
3040*0b57cec5SDimitry Andric{
3041*0b57cec5SDimitry Andricprivate:
3042*0b57cec5SDimitry Andric    size_t __size_;
3043*0b57cec5SDimitry Andric
3044*0b57cec5SDimitry Andric    template <class _Tp>
3045*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT
3046*0b57cec5SDimitry Andric        {for (size_t __i = 0; __i < __size_; ++__i, ++__p) __p->~_Tp();}
3047*0b57cec5SDimitry Andric
3048*0b57cec5SDimitry Andric    template <class _Tp>
3049*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT
3050*0b57cec5SDimitry Andric        {}
3051*0b57cec5SDimitry Andric
3052*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT
3053*0b57cec5SDimitry Andric        {++__size_;}
3054*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT
3055*0b57cec5SDimitry Andric        {}
3056*0b57cec5SDimitry Andric
3057*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT
3058*0b57cec5SDimitry Andric        {__size_ = __s;}
3059*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT
3060*0b57cec5SDimitry Andric        {}
3061*0b57cec5SDimitry Andricpublic:
3062*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT
3063*0b57cec5SDimitry Andric        : __size_(__s) {}
3064*0b57cec5SDimitry Andric
3065*0b57cec5SDimitry Andric    template <class _Tp>
3066*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT
3067*0b57cec5SDimitry Andric        {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
3068*0b57cec5SDimitry Andric
3069*0b57cec5SDimitry Andric    template <class _Tp>
3070*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT
3071*0b57cec5SDimitry Andric        {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
3072*0b57cec5SDimitry Andric
3073*0b57cec5SDimitry Andric    template <class _Tp>
3074*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT
3075*0b57cec5SDimitry Andric        {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
3076*0b57cec5SDimitry Andric};
3077*0b57cec5SDimitry Andric
3078*0b57cec5SDimitry Andrictemplate <class _Alloc>
3079*0b57cec5SDimitry Andricclass __allocator_destructor
3080*0b57cec5SDimitry Andric{
3081*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE allocator_traits<_Alloc> __alloc_traits;
3082*0b57cec5SDimitry Andricpublic:
3083*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename __alloc_traits::pointer pointer;
3084*0b57cec5SDimitry Andric    typedef _LIBCPP_NODEBUG_TYPE typename __alloc_traits::size_type size_type;
3085*0b57cec5SDimitry Andricprivate:
3086*0b57cec5SDimitry Andric    _Alloc& __alloc_;
3087*0b57cec5SDimitry Andric    size_type __s_;
3088*0b57cec5SDimitry Andricpublic:
3089*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s)
3090*0b57cec5SDimitry Andric             _NOEXCEPT
3091*0b57cec5SDimitry Andric        : __alloc_(__a), __s_(__s) {}
3092*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3093*0b57cec5SDimitry Andric    void operator()(pointer __p) _NOEXCEPT
3094*0b57cec5SDimitry Andric        {__alloc_traits::deallocate(__alloc_, __p, __s_);}
3095*0b57cec5SDimitry Andric};
3096*0b57cec5SDimitry Andric
3097*0b57cec5SDimitry Andrictemplate <class _InputIterator, class _ForwardIterator>
3098*0b57cec5SDimitry Andric_ForwardIterator
3099*0b57cec5SDimitry Andricuninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r)
3100*0b57cec5SDimitry Andric{
3101*0b57cec5SDimitry Andric    typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3102*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3103*0b57cec5SDimitry Andric    _ForwardIterator __s = __r;
3104*0b57cec5SDimitry Andric    try
3105*0b57cec5SDimitry Andric    {
3106*0b57cec5SDimitry Andric#endif
3107*0b57cec5SDimitry Andric        for (; __f != __l; ++__f, (void) ++__r)
3108*0b57cec5SDimitry Andric            ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f);
3109*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3110*0b57cec5SDimitry Andric    }
3111*0b57cec5SDimitry Andric    catch (...)
3112*0b57cec5SDimitry Andric    {
3113*0b57cec5SDimitry Andric        for (; __s != __r; ++__s)
3114*0b57cec5SDimitry Andric            __s->~value_type();
3115*0b57cec5SDimitry Andric        throw;
3116*0b57cec5SDimitry Andric    }
3117*0b57cec5SDimitry Andric#endif
3118*0b57cec5SDimitry Andric    return __r;
3119*0b57cec5SDimitry Andric}
3120*0b57cec5SDimitry Andric
3121*0b57cec5SDimitry Andrictemplate <class _InputIterator, class _Size, class _ForwardIterator>
3122*0b57cec5SDimitry Andric_ForwardIterator
3123*0b57cec5SDimitry Andricuninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r)
3124*0b57cec5SDimitry Andric{
3125*0b57cec5SDimitry Andric    typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3126*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3127*0b57cec5SDimitry Andric    _ForwardIterator __s = __r;
3128*0b57cec5SDimitry Andric    try
3129*0b57cec5SDimitry Andric    {
3130*0b57cec5SDimitry Andric#endif
3131*0b57cec5SDimitry Andric        for (; __n > 0; ++__f, (void) ++__r, (void) --__n)
3132*0b57cec5SDimitry Andric            ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f);
3133*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3134*0b57cec5SDimitry Andric    }
3135*0b57cec5SDimitry Andric    catch (...)
3136*0b57cec5SDimitry Andric    {
3137*0b57cec5SDimitry Andric        for (; __s != __r; ++__s)
3138*0b57cec5SDimitry Andric            __s->~value_type();
3139*0b57cec5SDimitry Andric        throw;
3140*0b57cec5SDimitry Andric    }
3141*0b57cec5SDimitry Andric#endif
3142*0b57cec5SDimitry Andric    return __r;
3143*0b57cec5SDimitry Andric}
3144*0b57cec5SDimitry Andric
3145*0b57cec5SDimitry Andrictemplate <class _ForwardIterator, class _Tp>
3146*0b57cec5SDimitry Andricvoid
3147*0b57cec5SDimitry Andricuninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x)
3148*0b57cec5SDimitry Andric{
3149*0b57cec5SDimitry Andric    typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3150*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3151*0b57cec5SDimitry Andric    _ForwardIterator __s = __f;
3152*0b57cec5SDimitry Andric    try
3153*0b57cec5SDimitry Andric    {
3154*0b57cec5SDimitry Andric#endif
3155*0b57cec5SDimitry Andric        for (; __f != __l; ++__f)
3156*0b57cec5SDimitry Andric            ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x);
3157*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3158*0b57cec5SDimitry Andric    }
3159*0b57cec5SDimitry Andric    catch (...)
3160*0b57cec5SDimitry Andric    {
3161*0b57cec5SDimitry Andric        for (; __s != __f; ++__s)
3162*0b57cec5SDimitry Andric            __s->~value_type();
3163*0b57cec5SDimitry Andric        throw;
3164*0b57cec5SDimitry Andric    }
3165*0b57cec5SDimitry Andric#endif
3166*0b57cec5SDimitry Andric}
3167*0b57cec5SDimitry Andric
3168*0b57cec5SDimitry Andrictemplate <class _ForwardIterator, class _Size, class _Tp>
3169*0b57cec5SDimitry Andric_ForwardIterator
3170*0b57cec5SDimitry Andricuninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x)
3171*0b57cec5SDimitry Andric{
3172*0b57cec5SDimitry Andric    typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3173*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3174*0b57cec5SDimitry Andric    _ForwardIterator __s = __f;
3175*0b57cec5SDimitry Andric    try
3176*0b57cec5SDimitry Andric    {
3177*0b57cec5SDimitry Andric#endif
3178*0b57cec5SDimitry Andric        for (; __n > 0; ++__f, (void) --__n)
3179*0b57cec5SDimitry Andric            ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x);
3180*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3181*0b57cec5SDimitry Andric    }
3182*0b57cec5SDimitry Andric    catch (...)
3183*0b57cec5SDimitry Andric    {
3184*0b57cec5SDimitry Andric        for (; __s != __f; ++__s)
3185*0b57cec5SDimitry Andric            __s->~value_type();
3186*0b57cec5SDimitry Andric        throw;
3187*0b57cec5SDimitry Andric    }
3188*0b57cec5SDimitry Andric#endif
3189*0b57cec5SDimitry Andric    return __f;
3190*0b57cec5SDimitry Andric}
3191*0b57cec5SDimitry Andric
3192*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER > 14
3193*0b57cec5SDimitry Andric
3194*0b57cec5SDimitry Andrictemplate <class _Tp>
3195*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
3196*0b57cec5SDimitry Andricvoid destroy_at(_Tp* __loc) {
3197*0b57cec5SDimitry Andric    _LIBCPP_ASSERT(__loc, "null pointer given to destroy_at");
3198*0b57cec5SDimitry Andric    __loc->~_Tp();
3199*0b57cec5SDimitry Andric}
3200*0b57cec5SDimitry Andric
3201*0b57cec5SDimitry Andrictemplate <class _ForwardIterator>
3202*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
3203*0b57cec5SDimitry Andricvoid destroy(_ForwardIterator __first, _ForwardIterator __last) {
3204*0b57cec5SDimitry Andric    for (; __first != __last; ++__first)
3205*0b57cec5SDimitry Andric        _VSTD::destroy_at(_VSTD::addressof(*__first));
3206*0b57cec5SDimitry Andric}
3207*0b57cec5SDimitry Andric
3208*0b57cec5SDimitry Andrictemplate <class _ForwardIterator, class _Size>
3209*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
3210*0b57cec5SDimitry Andric_ForwardIterator destroy_n(_ForwardIterator __first, _Size __n) {
3211*0b57cec5SDimitry Andric    for (; __n > 0; (void)++__first, --__n)
3212*0b57cec5SDimitry Andric        _VSTD::destroy_at(_VSTD::addressof(*__first));
3213*0b57cec5SDimitry Andric    return __first;
3214*0b57cec5SDimitry Andric}
3215*0b57cec5SDimitry Andric
3216*0b57cec5SDimitry Andrictemplate <class _ForwardIterator>
3217*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
3218*0b57cec5SDimitry Andricvoid uninitialized_default_construct(_ForwardIterator __first, _ForwardIterator __last) {
3219*0b57cec5SDimitry Andric    using _Vt = typename iterator_traits<_ForwardIterator>::value_type;
3220*0b57cec5SDimitry Andric    auto __idx = __first;
3221*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3222*0b57cec5SDimitry Andric    try {
3223*0b57cec5SDimitry Andric#endif
3224*0b57cec5SDimitry Andric    for (; __idx != __last; ++__idx)
3225*0b57cec5SDimitry Andric        ::new((void*)_VSTD::addressof(*__idx)) _Vt;
3226*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3227*0b57cec5SDimitry Andric    } catch (...) {
3228*0b57cec5SDimitry Andric        _VSTD::destroy(__first, __idx);
3229*0b57cec5SDimitry Andric        throw;
3230*0b57cec5SDimitry Andric    }
3231*0b57cec5SDimitry Andric#endif
3232*0b57cec5SDimitry Andric}
3233*0b57cec5SDimitry Andric
3234*0b57cec5SDimitry Andrictemplate <class _ForwardIterator, class _Size>
3235*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
3236*0b57cec5SDimitry Andric_ForwardIterator uninitialized_default_construct_n(_ForwardIterator __first, _Size __n) {
3237*0b57cec5SDimitry Andric    using _Vt = typename iterator_traits<_ForwardIterator>::value_type;
3238*0b57cec5SDimitry Andric    auto __idx = __first;
3239*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3240*0b57cec5SDimitry Andric    try {
3241*0b57cec5SDimitry Andric#endif
3242*0b57cec5SDimitry Andric    for (; __n > 0; (void)++__idx, --__n)
3243*0b57cec5SDimitry Andric        ::new((void*)_VSTD::addressof(*__idx)) _Vt;
3244*0b57cec5SDimitry Andric    return __idx;
3245*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3246*0b57cec5SDimitry Andric    } catch (...) {
3247*0b57cec5SDimitry Andric        _VSTD::destroy(__first, __idx);
3248*0b57cec5SDimitry Andric        throw;
3249*0b57cec5SDimitry Andric    }
3250*0b57cec5SDimitry Andric#endif
3251*0b57cec5SDimitry Andric}
3252*0b57cec5SDimitry Andric
3253*0b57cec5SDimitry Andric
3254*0b57cec5SDimitry Andrictemplate <class _ForwardIterator>
3255*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
3256*0b57cec5SDimitry Andricvoid uninitialized_value_construct(_ForwardIterator __first, _ForwardIterator __last) {
3257*0b57cec5SDimitry Andric    using _Vt = typename iterator_traits<_ForwardIterator>::value_type;
3258*0b57cec5SDimitry Andric    auto __idx = __first;
3259*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3260*0b57cec5SDimitry Andric    try {
3261*0b57cec5SDimitry Andric#endif
3262*0b57cec5SDimitry Andric    for (; __idx != __last; ++__idx)
3263*0b57cec5SDimitry Andric        ::new((void*)_VSTD::addressof(*__idx)) _Vt();
3264*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3265*0b57cec5SDimitry Andric    } catch (...) {
3266*0b57cec5SDimitry Andric        _VSTD::destroy(__first, __idx);
3267*0b57cec5SDimitry Andric        throw;
3268*0b57cec5SDimitry Andric    }
3269*0b57cec5SDimitry Andric#endif
3270*0b57cec5SDimitry Andric}
3271*0b57cec5SDimitry Andric
3272*0b57cec5SDimitry Andrictemplate <class _ForwardIterator, class _Size>
3273*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
3274*0b57cec5SDimitry Andric_ForwardIterator uninitialized_value_construct_n(_ForwardIterator __first, _Size __n) {
3275*0b57cec5SDimitry Andric    using _Vt = typename iterator_traits<_ForwardIterator>::value_type;
3276*0b57cec5SDimitry Andric    auto __idx = __first;
3277*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3278*0b57cec5SDimitry Andric    try {
3279*0b57cec5SDimitry Andric#endif
3280*0b57cec5SDimitry Andric    for (; __n > 0; (void)++__idx, --__n)
3281*0b57cec5SDimitry Andric        ::new((void*)_VSTD::addressof(*__idx)) _Vt();
3282*0b57cec5SDimitry Andric    return __idx;
3283*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3284*0b57cec5SDimitry Andric    } catch (...) {
3285*0b57cec5SDimitry Andric        _VSTD::destroy(__first, __idx);
3286*0b57cec5SDimitry Andric        throw;
3287*0b57cec5SDimitry Andric    }
3288*0b57cec5SDimitry Andric#endif
3289*0b57cec5SDimitry Andric}
3290*0b57cec5SDimitry Andric
3291*0b57cec5SDimitry Andric
3292*0b57cec5SDimitry Andrictemplate <class _InputIt, class _ForwardIt>
3293*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
3294*0b57cec5SDimitry Andric_ForwardIt uninitialized_move(_InputIt __first, _InputIt __last, _ForwardIt __first_res) {
3295*0b57cec5SDimitry Andric    using _Vt = typename iterator_traits<_ForwardIt>::value_type;
3296*0b57cec5SDimitry Andric    auto __idx = __first_res;
3297*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3298*0b57cec5SDimitry Andric    try {
3299*0b57cec5SDimitry Andric#endif
3300*0b57cec5SDimitry Andric    for (; __first != __last; (void)++__idx, ++__first)
3301*0b57cec5SDimitry Andric        ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first));
3302*0b57cec5SDimitry Andric    return __idx;
3303*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3304*0b57cec5SDimitry Andric    } catch (...) {
3305*0b57cec5SDimitry Andric        _VSTD::destroy(__first_res, __idx);
3306*0b57cec5SDimitry Andric        throw;
3307*0b57cec5SDimitry Andric    }
3308*0b57cec5SDimitry Andric#endif
3309*0b57cec5SDimitry Andric}
3310*0b57cec5SDimitry Andric
3311*0b57cec5SDimitry Andrictemplate <class _InputIt, class _Size, class _ForwardIt>
3312*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
3313*0b57cec5SDimitry Andricpair<_InputIt, _ForwardIt>
3314*0b57cec5SDimitry Andricuninitialized_move_n(_InputIt __first, _Size __n, _ForwardIt __first_res) {
3315*0b57cec5SDimitry Andric    using _Vt = typename iterator_traits<_ForwardIt>::value_type;
3316*0b57cec5SDimitry Andric    auto __idx = __first_res;
3317*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3318*0b57cec5SDimitry Andric    try {
3319*0b57cec5SDimitry Andric#endif
3320*0b57cec5SDimitry Andric    for (; __n > 0; ++__idx, (void)++__first, --__n)
3321*0b57cec5SDimitry Andric        ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first));
3322*0b57cec5SDimitry Andric    return {__first, __idx};
3323*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3324*0b57cec5SDimitry Andric    } catch (...) {
3325*0b57cec5SDimitry Andric        _VSTD::destroy(__first_res, __idx);
3326*0b57cec5SDimitry Andric        throw;
3327*0b57cec5SDimitry Andric    }
3328*0b57cec5SDimitry Andric#endif
3329*0b57cec5SDimitry Andric}
3330*0b57cec5SDimitry Andric
3331*0b57cec5SDimitry Andric
3332*0b57cec5SDimitry Andric#endif // _LIBCPP_STD_VER > 14
3333*0b57cec5SDimitry Andric
3334*0b57cec5SDimitry Andric// NOTE: Relaxed and acq/rel atomics (for increment and decrement respectively)
3335*0b57cec5SDimitry Andric// should be sufficient for thread safety.
3336*0b57cec5SDimitry Andric// See https://bugs.llvm.org/show_bug.cgi?id=22803
3337*0b57cec5SDimitry Andric#if defined(__clang__) && __has_builtin(__atomic_add_fetch)          \
3338*0b57cec5SDimitry Andric                       && defined(__ATOMIC_RELAXED)                  \
3339*0b57cec5SDimitry Andric                       && defined(__ATOMIC_ACQ_REL)
3340*0b57cec5SDimitry Andric#   define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT
3341*0b57cec5SDimitry Andric#elif defined(_LIBCPP_COMPILER_GCC)
3342*0b57cec5SDimitry Andric#   define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT
3343*0b57cec5SDimitry Andric#endif
3344*0b57cec5SDimitry Andric
3345*0b57cec5SDimitry Andrictemplate <class _Tp>
3346*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY _Tp
3347*0b57cec5SDimitry Andric__libcpp_atomic_refcount_increment(_Tp& __t) _NOEXCEPT
3348*0b57cec5SDimitry Andric{
3349*0b57cec5SDimitry Andric#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS)
3350*0b57cec5SDimitry Andric    return __atomic_add_fetch(&__t, 1, __ATOMIC_RELAXED);
3351*0b57cec5SDimitry Andric#else
3352*0b57cec5SDimitry Andric    return __t += 1;
3353*0b57cec5SDimitry Andric#endif
3354*0b57cec5SDimitry Andric}
3355*0b57cec5SDimitry Andric
3356*0b57cec5SDimitry Andrictemplate <class _Tp>
3357*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY _Tp
3358*0b57cec5SDimitry Andric__libcpp_atomic_refcount_decrement(_Tp& __t) _NOEXCEPT
3359*0b57cec5SDimitry Andric{
3360*0b57cec5SDimitry Andric#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS)
3361*0b57cec5SDimitry Andric    return __atomic_add_fetch(&__t, -1, __ATOMIC_ACQ_REL);
3362*0b57cec5SDimitry Andric#else
3363*0b57cec5SDimitry Andric    return __t -= 1;
3364*0b57cec5SDimitry Andric#endif
3365*0b57cec5SDimitry Andric}
3366*0b57cec5SDimitry Andric
3367*0b57cec5SDimitry Andricclass _LIBCPP_EXCEPTION_ABI bad_weak_ptr
3368*0b57cec5SDimitry Andric    : public std::exception
3369*0b57cec5SDimitry Andric{
3370*0b57cec5SDimitry Andricpublic:
3371*0b57cec5SDimitry Andric    virtual ~bad_weak_ptr() _NOEXCEPT;
3372*0b57cec5SDimitry Andric    virtual const char* what() const  _NOEXCEPT;
3373*0b57cec5SDimitry Andric};
3374*0b57cec5SDimitry Andric
3375*0b57cec5SDimitry Andric_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
3376*0b57cec5SDimitry Andricvoid __throw_bad_weak_ptr()
3377*0b57cec5SDimitry Andric{
3378*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3379*0b57cec5SDimitry Andric    throw bad_weak_ptr();
3380*0b57cec5SDimitry Andric#else
3381*0b57cec5SDimitry Andric    _VSTD::abort();
3382*0b57cec5SDimitry Andric#endif
3383*0b57cec5SDimitry Andric}
3384*0b57cec5SDimitry Andric
3385*0b57cec5SDimitry Andrictemplate<class _Tp> class _LIBCPP_TEMPLATE_VIS weak_ptr;
3386*0b57cec5SDimitry Andric
3387*0b57cec5SDimitry Andricclass _LIBCPP_TYPE_VIS __shared_count
3388*0b57cec5SDimitry Andric{
3389*0b57cec5SDimitry Andric    __shared_count(const __shared_count&);
3390*0b57cec5SDimitry Andric    __shared_count& operator=(const __shared_count&);
3391*0b57cec5SDimitry Andric
3392*0b57cec5SDimitry Andricprotected:
3393*0b57cec5SDimitry Andric    long __shared_owners_;
3394*0b57cec5SDimitry Andric    virtual ~__shared_count();
3395*0b57cec5SDimitry Andricprivate:
3396*0b57cec5SDimitry Andric    virtual void __on_zero_shared() _NOEXCEPT = 0;
3397*0b57cec5SDimitry Andric
3398*0b57cec5SDimitry Andricpublic:
3399*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3400*0b57cec5SDimitry Andric    explicit __shared_count(long __refs = 0) _NOEXCEPT
3401*0b57cec5SDimitry Andric        : __shared_owners_(__refs) {}
3402*0b57cec5SDimitry Andric
3403*0b57cec5SDimitry Andric#if defined(_LIBCPP_BUILDING_LIBRARY) && \
3404*0b57cec5SDimitry Andric    defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS)
3405*0b57cec5SDimitry Andric    void __add_shared() _NOEXCEPT;
3406*0b57cec5SDimitry Andric    bool __release_shared() _NOEXCEPT;
3407*0b57cec5SDimitry Andric#else
3408*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3409*0b57cec5SDimitry Andric    void __add_shared() _NOEXCEPT {
3410*0b57cec5SDimitry Andric      __libcpp_atomic_refcount_increment(__shared_owners_);
3411*0b57cec5SDimitry Andric    }
3412*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3413*0b57cec5SDimitry Andric    bool __release_shared() _NOEXCEPT {
3414*0b57cec5SDimitry Andric      if (__libcpp_atomic_refcount_decrement(__shared_owners_) == -1) {
3415*0b57cec5SDimitry Andric        __on_zero_shared();
3416*0b57cec5SDimitry Andric        return true;
3417*0b57cec5SDimitry Andric      }
3418*0b57cec5SDimitry Andric      return false;
3419*0b57cec5SDimitry Andric    }
3420*0b57cec5SDimitry Andric#endif
3421*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3422*0b57cec5SDimitry Andric    long use_count() const _NOEXCEPT {
3423*0b57cec5SDimitry Andric        return __libcpp_relaxed_load(&__shared_owners_) + 1;
3424*0b57cec5SDimitry Andric    }
3425*0b57cec5SDimitry Andric};
3426*0b57cec5SDimitry Andric
3427*0b57cec5SDimitry Andricclass _LIBCPP_TYPE_VIS __shared_weak_count
3428*0b57cec5SDimitry Andric    : private __shared_count
3429*0b57cec5SDimitry Andric{
3430*0b57cec5SDimitry Andric    long __shared_weak_owners_;
3431*0b57cec5SDimitry Andric
3432*0b57cec5SDimitry Andricpublic:
3433*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3434*0b57cec5SDimitry Andric    explicit __shared_weak_count(long __refs = 0) _NOEXCEPT
3435*0b57cec5SDimitry Andric        : __shared_count(__refs),
3436*0b57cec5SDimitry Andric          __shared_weak_owners_(__refs) {}
3437*0b57cec5SDimitry Andricprotected:
3438*0b57cec5SDimitry Andric    virtual ~__shared_weak_count();
3439*0b57cec5SDimitry Andric
3440*0b57cec5SDimitry Andricpublic:
3441*0b57cec5SDimitry Andric#if defined(_LIBCPP_BUILDING_LIBRARY) && \
3442*0b57cec5SDimitry Andric    defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS)
3443*0b57cec5SDimitry Andric    void __add_shared() _NOEXCEPT;
3444*0b57cec5SDimitry Andric    void __add_weak() _NOEXCEPT;
3445*0b57cec5SDimitry Andric    void __release_shared() _NOEXCEPT;
3446*0b57cec5SDimitry Andric#else
3447*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3448*0b57cec5SDimitry Andric    void __add_shared() _NOEXCEPT {
3449*0b57cec5SDimitry Andric      __shared_count::__add_shared();
3450*0b57cec5SDimitry Andric    }
3451*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3452*0b57cec5SDimitry Andric    void __add_weak() _NOEXCEPT {
3453*0b57cec5SDimitry Andric      __libcpp_atomic_refcount_increment(__shared_weak_owners_);
3454*0b57cec5SDimitry Andric    }
3455*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3456*0b57cec5SDimitry Andric    void __release_shared() _NOEXCEPT {
3457*0b57cec5SDimitry Andric      if (__shared_count::__release_shared())
3458*0b57cec5SDimitry Andric        __release_weak();
3459*0b57cec5SDimitry Andric    }
3460*0b57cec5SDimitry Andric#endif
3461*0b57cec5SDimitry Andric    void __release_weak() _NOEXCEPT;
3462*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3463*0b57cec5SDimitry Andric    long use_count() const _NOEXCEPT {return __shared_count::use_count();}
3464*0b57cec5SDimitry Andric    __shared_weak_count* lock() _NOEXCEPT;
3465*0b57cec5SDimitry Andric
3466*0b57cec5SDimitry Andric    // Define the function out only if we build static libc++ without RTTI.
3467*0b57cec5SDimitry Andric    // Otherwise we may break clients who need to compile their projects with
3468*0b57cec5SDimitry Andric    // -fno-rtti and yet link against a libc++.dylib compiled
3469*0b57cec5SDimitry Andric    // without -fno-rtti.
3470*0b57cec5SDimitry Andric#if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC)
3471*0b57cec5SDimitry Andric    virtual const void* __get_deleter(const type_info&) const _NOEXCEPT;
3472*0b57cec5SDimitry Andric#endif
3473*0b57cec5SDimitry Andricprivate:
3474*0b57cec5SDimitry Andric    virtual void __on_zero_shared_weak() _NOEXCEPT = 0;
3475*0b57cec5SDimitry Andric};
3476*0b57cec5SDimitry Andric
3477*0b57cec5SDimitry Andrictemplate <class _Tp, class _Dp, class _Alloc>
3478*0b57cec5SDimitry Andricclass __shared_ptr_pointer
3479*0b57cec5SDimitry Andric    : public __shared_weak_count
3480*0b57cec5SDimitry Andric{
3481*0b57cec5SDimitry Andric    __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_;
3482*0b57cec5SDimitry Andricpublic:
3483*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3484*0b57cec5SDimitry Andric    __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a)
3485*0b57cec5SDimitry Andric        :  __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {}
3486*0b57cec5SDimitry Andric
3487*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_RTTI
3488*0b57cec5SDimitry Andric    virtual const void* __get_deleter(const type_info&) const _NOEXCEPT;
3489*0b57cec5SDimitry Andric#endif
3490*0b57cec5SDimitry Andric
3491*0b57cec5SDimitry Andricprivate:
3492*0b57cec5SDimitry Andric    virtual void __on_zero_shared() _NOEXCEPT;
3493*0b57cec5SDimitry Andric    virtual void __on_zero_shared_weak() _NOEXCEPT;
3494*0b57cec5SDimitry Andric};
3495*0b57cec5SDimitry Andric
3496*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_RTTI
3497*0b57cec5SDimitry Andric
3498*0b57cec5SDimitry Andrictemplate <class _Tp, class _Dp, class _Alloc>
3499*0b57cec5SDimitry Andricconst void*
3500*0b57cec5SDimitry Andric__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT
3501*0b57cec5SDimitry Andric{
3502*0b57cec5SDimitry Andric    return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : nullptr;
3503*0b57cec5SDimitry Andric}
3504*0b57cec5SDimitry Andric
3505*0b57cec5SDimitry Andric#endif  // _LIBCPP_NO_RTTI
3506*0b57cec5SDimitry Andric
3507*0b57cec5SDimitry Andrictemplate <class _Tp, class _Dp, class _Alloc>
3508*0b57cec5SDimitry Andricvoid
3509*0b57cec5SDimitry Andric__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT
3510*0b57cec5SDimitry Andric{
3511*0b57cec5SDimitry Andric    __data_.first().second()(__data_.first().first());
3512*0b57cec5SDimitry Andric    __data_.first().second().~_Dp();
3513*0b57cec5SDimitry Andric}
3514*0b57cec5SDimitry Andric
3515*0b57cec5SDimitry Andrictemplate <class _Tp, class _Dp, class _Alloc>
3516*0b57cec5SDimitry Andricvoid
3517*0b57cec5SDimitry Andric__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT
3518*0b57cec5SDimitry Andric{
3519*0b57cec5SDimitry Andric    typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al;
3520*0b57cec5SDimitry Andric    typedef allocator_traits<_Al> _ATraits;
3521*0b57cec5SDimitry Andric    typedef pointer_traits<typename _ATraits::pointer> _PTraits;
3522*0b57cec5SDimitry Andric
3523*0b57cec5SDimitry Andric    _Al __a(__data_.second());
3524*0b57cec5SDimitry Andric    __data_.second().~_Alloc();
3525*0b57cec5SDimitry Andric    __a.deallocate(_PTraits::pointer_to(*this), 1);
3526*0b57cec5SDimitry Andric}
3527*0b57cec5SDimitry Andric
3528*0b57cec5SDimitry Andrictemplate <class _Tp, class _Alloc>
3529*0b57cec5SDimitry Andricclass __shared_ptr_emplace
3530*0b57cec5SDimitry Andric    : public __shared_weak_count
3531*0b57cec5SDimitry Andric{
3532*0b57cec5SDimitry Andric    __compressed_pair<_Alloc, _Tp> __data_;
3533*0b57cec5SDimitry Andricpublic:
3534*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_VARIADICS
3535*0b57cec5SDimitry Andric
3536*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3537*0b57cec5SDimitry Andric    __shared_ptr_emplace(_Alloc __a)
3538*0b57cec5SDimitry Andric        :  __data_(_VSTD::move(__a)) {}
3539*0b57cec5SDimitry Andric
3540*0b57cec5SDimitry Andric    template <class ..._Args>
3541*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3542*0b57cec5SDimitry Andric        __shared_ptr_emplace(_Alloc __a, _Args&& ...__args)
3543*0b57cec5SDimitry Andric            :  __data_(piecewise_construct, _VSTD::forward_as_tuple(__a),
3544*0b57cec5SDimitry Andric                   _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {}
3545*0b57cec5SDimitry Andric
3546*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_VARIADICS
3547*0b57cec5SDimitry Andric
3548*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3549*0b57cec5SDimitry Andric    __shared_ptr_emplace(_Alloc __a)
3550*0b57cec5SDimitry Andric        :  __data_(__a) {}
3551*0b57cec5SDimitry Andric
3552*0b57cec5SDimitry Andric    template <class _A0>
3553*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3554*0b57cec5SDimitry Andric        __shared_ptr_emplace(_Alloc __a, _A0& __a0)
3555*0b57cec5SDimitry Andric            :  __data_(__a, _Tp(__a0)) {}
3556*0b57cec5SDimitry Andric
3557*0b57cec5SDimitry Andric    template <class _A0, class _A1>
3558*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3559*0b57cec5SDimitry Andric        __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1)
3560*0b57cec5SDimitry Andric            :  __data_(__a, _Tp(__a0, __a1)) {}
3561*0b57cec5SDimitry Andric
3562*0b57cec5SDimitry Andric    template <class _A0, class _A1, class _A2>
3563*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3564*0b57cec5SDimitry Andric        __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2)
3565*0b57cec5SDimitry Andric            :  __data_(__a, _Tp(__a0, __a1, __a2)) {}
3566*0b57cec5SDimitry Andric
3567*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_VARIADICS
3568*0b57cec5SDimitry Andric
3569*0b57cec5SDimitry Andricprivate:
3570*0b57cec5SDimitry Andric    virtual void __on_zero_shared() _NOEXCEPT;
3571*0b57cec5SDimitry Andric    virtual void __on_zero_shared_weak() _NOEXCEPT;
3572*0b57cec5SDimitry Andricpublic:
3573*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3574*0b57cec5SDimitry Andric    _Tp* get() _NOEXCEPT {return _VSTD::addressof(__data_.second());}
3575*0b57cec5SDimitry Andric};
3576*0b57cec5SDimitry Andric
3577*0b57cec5SDimitry Andrictemplate <class _Tp, class _Alloc>
3578*0b57cec5SDimitry Andricvoid
3579*0b57cec5SDimitry Andric__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT
3580*0b57cec5SDimitry Andric{
3581*0b57cec5SDimitry Andric    __data_.second().~_Tp();
3582*0b57cec5SDimitry Andric}
3583*0b57cec5SDimitry Andric
3584*0b57cec5SDimitry Andrictemplate <class _Tp, class _Alloc>
3585*0b57cec5SDimitry Andricvoid
3586*0b57cec5SDimitry Andric__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT
3587*0b57cec5SDimitry Andric{
3588*0b57cec5SDimitry Andric    typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type _Al;
3589*0b57cec5SDimitry Andric    typedef allocator_traits<_Al> _ATraits;
3590*0b57cec5SDimitry Andric    typedef pointer_traits<typename _ATraits::pointer> _PTraits;
3591*0b57cec5SDimitry Andric    _Al __a(__data_.first());
3592*0b57cec5SDimitry Andric    __data_.first().~_Alloc();
3593*0b57cec5SDimitry Andric    __a.deallocate(_PTraits::pointer_to(*this), 1);
3594*0b57cec5SDimitry Andric}
3595*0b57cec5SDimitry Andric
3596*0b57cec5SDimitry Andricstruct __shared_ptr_dummy_rebind_allocator_type;
3597*0b57cec5SDimitry Andrictemplate <>
3598*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS allocator<__shared_ptr_dummy_rebind_allocator_type>
3599*0b57cec5SDimitry Andric{
3600*0b57cec5SDimitry Andricpublic:
3601*0b57cec5SDimitry Andric    template <class _Other>
3602*0b57cec5SDimitry Andric    struct rebind
3603*0b57cec5SDimitry Andric    {
3604*0b57cec5SDimitry Andric        typedef allocator<_Other> other;
3605*0b57cec5SDimitry Andric    };
3606*0b57cec5SDimitry Andric};
3607*0b57cec5SDimitry Andric
3608*0b57cec5SDimitry Andrictemplate<class _Tp> class _LIBCPP_TEMPLATE_VIS enable_shared_from_this;
3609*0b57cec5SDimitry Andric
3610*0b57cec5SDimitry Andrictemplate<class _Tp>
3611*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS shared_ptr
3612*0b57cec5SDimitry Andric{
3613*0b57cec5SDimitry Andricpublic:
3614*0b57cec5SDimitry Andric    typedef _Tp element_type;
3615*0b57cec5SDimitry Andric
3616*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER > 14
3617*0b57cec5SDimitry Andric    typedef weak_ptr<_Tp> weak_type;
3618*0b57cec5SDimitry Andric#endif
3619*0b57cec5SDimitry Andricprivate:
3620*0b57cec5SDimitry Andric    element_type*      __ptr_;
3621*0b57cec5SDimitry Andric    __shared_weak_count* __cntrl_;
3622*0b57cec5SDimitry Andric
3623*0b57cec5SDimitry Andric    struct __nat {int __for_bool_;};
3624*0b57cec5SDimitry Andricpublic:
3625*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3626*0b57cec5SDimitry Andric    _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT;
3627*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3628*0b57cec5SDimitry Andric    _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT;
3629*0b57cec5SDimitry Andric    template<class _Yp>
3630*0b57cec5SDimitry Andric        explicit shared_ptr(_Yp* __p,
3631*0b57cec5SDimitry Andric                            typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3632*0b57cec5SDimitry Andric    template<class _Yp, class _Dp>
3633*0b57cec5SDimitry Andric        shared_ptr(_Yp* __p, _Dp __d,
3634*0b57cec5SDimitry Andric                   typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3635*0b57cec5SDimitry Andric    template<class _Yp, class _Dp, class _Alloc>
3636*0b57cec5SDimitry Andric        shared_ptr(_Yp* __p, _Dp __d, _Alloc __a,
3637*0b57cec5SDimitry Andric                   typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3638*0b57cec5SDimitry Andric    template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d);
3639*0b57cec5SDimitry Andric    template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a);
3640*0b57cec5SDimitry Andric    template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT;
3641*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3642*0b57cec5SDimitry Andric    shared_ptr(const shared_ptr& __r) _NOEXCEPT;
3643*0b57cec5SDimitry Andric    template<class _Yp>
3644*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3645*0b57cec5SDimitry Andric        shared_ptr(const shared_ptr<_Yp>& __r,
3646*0b57cec5SDimitry Andric                   typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat())
3647*0b57cec5SDimitry Andric                       _NOEXCEPT;
3648*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3649*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3650*0b57cec5SDimitry Andric    shared_ptr(shared_ptr&& __r) _NOEXCEPT;
3651*0b57cec5SDimitry Andric    template<class _Yp> _LIBCPP_INLINE_VISIBILITY  shared_ptr(shared_ptr<_Yp>&& __r,
3652*0b57cec5SDimitry Andric                   typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat())
3653*0b57cec5SDimitry Andric                       _NOEXCEPT;
3654*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3655*0b57cec5SDimitry Andric    template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r,
3656*0b57cec5SDimitry Andric                   typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type= __nat());
3657*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
3658*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3659*0b57cec5SDimitry Andric    template<class _Yp>
3660*0b57cec5SDimitry Andric        shared_ptr(auto_ptr<_Yp>&& __r,
3661*0b57cec5SDimitry Andric                   typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3662*0b57cec5SDimitry Andric#else
3663*0b57cec5SDimitry Andric    template<class _Yp>
3664*0b57cec5SDimitry Andric        shared_ptr(auto_ptr<_Yp> __r,
3665*0b57cec5SDimitry Andric                   typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3666*0b57cec5SDimitry Andric#endif
3667*0b57cec5SDimitry Andric#endif
3668*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3669*0b57cec5SDimitry Andric    template <class _Yp, class _Dp>
3670*0b57cec5SDimitry Andric        shared_ptr(unique_ptr<_Yp, _Dp>&&,
3671*0b57cec5SDimitry Andric                   typename enable_if
3672*0b57cec5SDimitry Andric                   <
3673*0b57cec5SDimitry Andric                       !is_lvalue_reference<_Dp>::value &&
3674*0b57cec5SDimitry Andric                       !is_array<_Yp>::value &&
3675*0b57cec5SDimitry Andric                       is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3676*0b57cec5SDimitry Andric                       __nat
3677*0b57cec5SDimitry Andric                   >::type = __nat());
3678*0b57cec5SDimitry Andric    template <class _Yp, class _Dp>
3679*0b57cec5SDimitry Andric        shared_ptr(unique_ptr<_Yp, _Dp>&&,
3680*0b57cec5SDimitry Andric                   typename enable_if
3681*0b57cec5SDimitry Andric                   <
3682*0b57cec5SDimitry Andric                       is_lvalue_reference<_Dp>::value &&
3683*0b57cec5SDimitry Andric                       !is_array<_Yp>::value &&
3684*0b57cec5SDimitry Andric                       is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3685*0b57cec5SDimitry Andric                       __nat
3686*0b57cec5SDimitry Andric                   >::type = __nat());
3687*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3688*0b57cec5SDimitry Andric    template <class _Yp, class _Dp>
3689*0b57cec5SDimitry Andric        shared_ptr(unique_ptr<_Yp, _Dp>,
3690*0b57cec5SDimitry Andric                   typename enable_if
3691*0b57cec5SDimitry Andric                   <
3692*0b57cec5SDimitry Andric                       !is_lvalue_reference<_Dp>::value &&
3693*0b57cec5SDimitry Andric                       !is_array<_Yp>::value &&
3694*0b57cec5SDimitry Andric                       is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3695*0b57cec5SDimitry Andric                       __nat
3696*0b57cec5SDimitry Andric                   >::type = __nat());
3697*0b57cec5SDimitry Andric    template <class _Yp, class _Dp>
3698*0b57cec5SDimitry Andric        shared_ptr(unique_ptr<_Yp, _Dp>,
3699*0b57cec5SDimitry Andric                   typename enable_if
3700*0b57cec5SDimitry Andric                   <
3701*0b57cec5SDimitry Andric                       is_lvalue_reference<_Dp>::value &&
3702*0b57cec5SDimitry Andric                       !is_array<_Yp>::value &&
3703*0b57cec5SDimitry Andric                       is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3704*0b57cec5SDimitry Andric                       __nat
3705*0b57cec5SDimitry Andric                   >::type = __nat());
3706*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3707*0b57cec5SDimitry Andric
3708*0b57cec5SDimitry Andric    ~shared_ptr();
3709*0b57cec5SDimitry Andric
3710*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3711*0b57cec5SDimitry Andric    shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT;
3712*0b57cec5SDimitry Andric    template<class _Yp>
3713*0b57cec5SDimitry Andric        typename enable_if
3714*0b57cec5SDimitry Andric        <
3715*0b57cec5SDimitry Andric            is_convertible<_Yp*, element_type*>::value,
3716*0b57cec5SDimitry Andric            shared_ptr&
3717*0b57cec5SDimitry Andric        >::type
3718*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3719*0b57cec5SDimitry Andric        operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT;
3720*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3721*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3722*0b57cec5SDimitry Andric    shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT;
3723*0b57cec5SDimitry Andric    template<class _Yp>
3724*0b57cec5SDimitry Andric        typename enable_if
3725*0b57cec5SDimitry Andric        <
3726*0b57cec5SDimitry Andric            is_convertible<_Yp*, element_type*>::value,
3727*0b57cec5SDimitry Andric            shared_ptr<_Tp>&
3728*0b57cec5SDimitry Andric        >::type
3729*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3730*0b57cec5SDimitry Andric        operator=(shared_ptr<_Yp>&& __r);
3731*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
3732*0b57cec5SDimitry Andric    template<class _Yp>
3733*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3734*0b57cec5SDimitry Andric        typename enable_if
3735*0b57cec5SDimitry Andric        <
3736*0b57cec5SDimitry Andric            !is_array<_Yp>::value &&
3737*0b57cec5SDimitry Andric            is_convertible<_Yp*, element_type*>::value,
3738*0b57cec5SDimitry Andric            shared_ptr
3739*0b57cec5SDimitry Andric        >::type&
3740*0b57cec5SDimitry Andric        operator=(auto_ptr<_Yp>&& __r);
3741*0b57cec5SDimitry Andric#endif
3742*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3743*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
3744*0b57cec5SDimitry Andric    template<class _Yp>
3745*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3746*0b57cec5SDimitry Andric        typename enable_if
3747*0b57cec5SDimitry Andric        <
3748*0b57cec5SDimitry Andric            !is_array<_Yp>::value &&
3749*0b57cec5SDimitry Andric            is_convertible<_Yp*, element_type*>::value,
3750*0b57cec5SDimitry Andric            shared_ptr&
3751*0b57cec5SDimitry Andric        >::type
3752*0b57cec5SDimitry Andric        operator=(auto_ptr<_Yp> __r);
3753*0b57cec5SDimitry Andric#endif
3754*0b57cec5SDimitry Andric#endif
3755*0b57cec5SDimitry Andric    template <class _Yp, class _Dp>
3756*0b57cec5SDimitry Andric        typename enable_if
3757*0b57cec5SDimitry Andric        <
3758*0b57cec5SDimitry Andric            !is_array<_Yp>::value &&
3759*0b57cec5SDimitry Andric            is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3760*0b57cec5SDimitry Andric            shared_ptr&
3761*0b57cec5SDimitry Andric        >::type
3762*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3763*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3764*0b57cec5SDimitry Andric        operator=(unique_ptr<_Yp, _Dp>&& __r);
3765*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3766*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3767*0b57cec5SDimitry Andric        operator=(unique_ptr<_Yp, _Dp> __r);
3768*0b57cec5SDimitry Andric#endif
3769*0b57cec5SDimitry Andric
3770*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3771*0b57cec5SDimitry Andric    void swap(shared_ptr& __r) _NOEXCEPT;
3772*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3773*0b57cec5SDimitry Andric    void reset() _NOEXCEPT;
3774*0b57cec5SDimitry Andric    template<class _Yp>
3775*0b57cec5SDimitry Andric        typename enable_if
3776*0b57cec5SDimitry Andric        <
3777*0b57cec5SDimitry Andric            is_convertible<_Yp*, element_type*>::value,
3778*0b57cec5SDimitry Andric            void
3779*0b57cec5SDimitry Andric        >::type
3780*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3781*0b57cec5SDimitry Andric        reset(_Yp* __p);
3782*0b57cec5SDimitry Andric    template<class _Yp, class _Dp>
3783*0b57cec5SDimitry Andric        typename enable_if
3784*0b57cec5SDimitry Andric        <
3785*0b57cec5SDimitry Andric            is_convertible<_Yp*, element_type*>::value,
3786*0b57cec5SDimitry Andric            void
3787*0b57cec5SDimitry Andric        >::type
3788*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3789*0b57cec5SDimitry Andric        reset(_Yp* __p, _Dp __d);
3790*0b57cec5SDimitry Andric    template<class _Yp, class _Dp, class _Alloc>
3791*0b57cec5SDimitry Andric        typename enable_if
3792*0b57cec5SDimitry Andric        <
3793*0b57cec5SDimitry Andric            is_convertible<_Yp*, element_type*>::value,
3794*0b57cec5SDimitry Andric            void
3795*0b57cec5SDimitry Andric        >::type
3796*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3797*0b57cec5SDimitry Andric        reset(_Yp* __p, _Dp __d, _Alloc __a);
3798*0b57cec5SDimitry Andric
3799*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3800*0b57cec5SDimitry Andric    element_type* get() const _NOEXCEPT {return __ptr_;}
3801*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3802*0b57cec5SDimitry Andric    typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT
3803*0b57cec5SDimitry Andric        {return *__ptr_;}
3804*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3805*0b57cec5SDimitry Andric    element_type* operator->() const _NOEXCEPT {return __ptr_;}
3806*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3807*0b57cec5SDimitry Andric    long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;}
3808*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3809*0b57cec5SDimitry Andric    bool unique() const _NOEXCEPT {return use_count() == 1;}
3810*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3811*0b57cec5SDimitry Andric    _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;}
3812*0b57cec5SDimitry Andric    template <class _Up>
3813*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3814*0b57cec5SDimitry Andric        bool owner_before(shared_ptr<_Up> const& __p) const _NOEXCEPT
3815*0b57cec5SDimitry Andric        {return __cntrl_ < __p.__cntrl_;}
3816*0b57cec5SDimitry Andric    template <class _Up>
3817*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3818*0b57cec5SDimitry Andric        bool owner_before(weak_ptr<_Up> const& __p) const _NOEXCEPT
3819*0b57cec5SDimitry Andric        {return __cntrl_ < __p.__cntrl_;}
3820*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
3821*0b57cec5SDimitry Andric    bool
3822*0b57cec5SDimitry Andric    __owner_equivalent(const shared_ptr& __p) const
3823*0b57cec5SDimitry Andric        {return __cntrl_ == __p.__cntrl_;}
3824*0b57cec5SDimitry Andric
3825*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_RTTI
3826*0b57cec5SDimitry Andric    template <class _Dp>
3827*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3828*0b57cec5SDimitry Andric        _Dp* __get_deleter() const _NOEXCEPT
3829*0b57cec5SDimitry Andric            {return static_cast<_Dp*>(__cntrl_
3830*0b57cec5SDimitry Andric                    ? const_cast<void *>(__cntrl_->__get_deleter(typeid(_Dp)))
3831*0b57cec5SDimitry Andric                      : nullptr);}
3832*0b57cec5SDimitry Andric#endif  // _LIBCPP_NO_RTTI
3833*0b57cec5SDimitry Andric
3834*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_VARIADICS
3835*0b57cec5SDimitry Andric
3836*0b57cec5SDimitry Andric    template<class ..._Args>
3837*0b57cec5SDimitry Andric        static
3838*0b57cec5SDimitry Andric        shared_ptr<_Tp>
3839*0b57cec5SDimitry Andric        make_shared(_Args&& ...__args);
3840*0b57cec5SDimitry Andric
3841*0b57cec5SDimitry Andric    template<class _Alloc, class ..._Args>
3842*0b57cec5SDimitry Andric        static
3843*0b57cec5SDimitry Andric        shared_ptr<_Tp>
3844*0b57cec5SDimitry Andric        allocate_shared(const _Alloc& __a, _Args&& ...__args);
3845*0b57cec5SDimitry Andric
3846*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_VARIADICS
3847*0b57cec5SDimitry Andric
3848*0b57cec5SDimitry Andric    static shared_ptr<_Tp> make_shared();
3849*0b57cec5SDimitry Andric
3850*0b57cec5SDimitry Andric    template<class _A0>
3851*0b57cec5SDimitry Andric        static shared_ptr<_Tp> make_shared(_A0&);
3852*0b57cec5SDimitry Andric
3853*0b57cec5SDimitry Andric    template<class _A0, class _A1>
3854*0b57cec5SDimitry Andric        static shared_ptr<_Tp> make_shared(_A0&, _A1&);
3855*0b57cec5SDimitry Andric
3856*0b57cec5SDimitry Andric    template<class _A0, class _A1, class _A2>
3857*0b57cec5SDimitry Andric        static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&);
3858*0b57cec5SDimitry Andric
3859*0b57cec5SDimitry Andric    template<class _Alloc>
3860*0b57cec5SDimitry Andric        static shared_ptr<_Tp>
3861*0b57cec5SDimitry Andric        allocate_shared(const _Alloc& __a);
3862*0b57cec5SDimitry Andric
3863*0b57cec5SDimitry Andric    template<class _Alloc, class _A0>
3864*0b57cec5SDimitry Andric        static shared_ptr<_Tp>
3865*0b57cec5SDimitry Andric        allocate_shared(const _Alloc& __a, _A0& __a0);
3866*0b57cec5SDimitry Andric
3867*0b57cec5SDimitry Andric    template<class _Alloc, class _A0, class _A1>
3868*0b57cec5SDimitry Andric        static shared_ptr<_Tp>
3869*0b57cec5SDimitry Andric        allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1);
3870*0b57cec5SDimitry Andric
3871*0b57cec5SDimitry Andric    template<class _Alloc, class _A0, class _A1, class _A2>
3872*0b57cec5SDimitry Andric        static shared_ptr<_Tp>
3873*0b57cec5SDimitry Andric        allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2);
3874*0b57cec5SDimitry Andric
3875*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_VARIADICS
3876*0b57cec5SDimitry Andric
3877*0b57cec5SDimitry Andricprivate:
3878*0b57cec5SDimitry Andric    template <class _Yp, bool = is_function<_Yp>::value>
3879*0b57cec5SDimitry Andric        struct __shared_ptr_default_allocator
3880*0b57cec5SDimitry Andric        {
3881*0b57cec5SDimitry Andric            typedef allocator<_Yp> type;
3882*0b57cec5SDimitry Andric        };
3883*0b57cec5SDimitry Andric
3884*0b57cec5SDimitry Andric    template <class _Yp>
3885*0b57cec5SDimitry Andric        struct __shared_ptr_default_allocator<_Yp, true>
3886*0b57cec5SDimitry Andric        {
3887*0b57cec5SDimitry Andric            typedef allocator<__shared_ptr_dummy_rebind_allocator_type> type;
3888*0b57cec5SDimitry Andric        };
3889*0b57cec5SDimitry Andric
3890*0b57cec5SDimitry Andric    template <class _Yp, class _OrigPtr>
3891*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
3892*0b57cec5SDimitry Andric        typename enable_if<is_convertible<_OrigPtr*,
3893*0b57cec5SDimitry Andric                                          const enable_shared_from_this<_Yp>*
3894*0b57cec5SDimitry Andric        >::value,
3895*0b57cec5SDimitry Andric            void>::type
3896*0b57cec5SDimitry Andric        __enable_weak_this(const enable_shared_from_this<_Yp>* __e,
3897*0b57cec5SDimitry Andric                           _OrigPtr* __ptr) _NOEXCEPT
3898*0b57cec5SDimitry Andric        {
3899*0b57cec5SDimitry Andric            typedef typename remove_cv<_Yp>::type _RawYp;
3900*0b57cec5SDimitry Andric            if (__e && __e->__weak_this_.expired())
3901*0b57cec5SDimitry Andric            {
3902*0b57cec5SDimitry Andric                __e->__weak_this_ = shared_ptr<_RawYp>(*this,
3903*0b57cec5SDimitry Andric                    const_cast<_RawYp*>(static_cast<const _Yp*>(__ptr)));
3904*0b57cec5SDimitry Andric            }
3905*0b57cec5SDimitry Andric        }
3906*0b57cec5SDimitry Andric
3907*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY void __enable_weak_this(...) _NOEXCEPT {}
3908*0b57cec5SDimitry Andric
3909*0b57cec5SDimitry Andric    template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr;
3910*0b57cec5SDimitry Andric    template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr;
3911*0b57cec5SDimitry Andric};
3912*0b57cec5SDimitry Andric
3913*0b57cec5SDimitry Andric
3914*0b57cec5SDimitry Andrictemplate<class _Tp>
3915*0b57cec5SDimitry Andricinline
3916*0b57cec5SDimitry Andric_LIBCPP_CONSTEXPR
3917*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr() _NOEXCEPT
3918*0b57cec5SDimitry Andric    : __ptr_(0),
3919*0b57cec5SDimitry Andric      __cntrl_(0)
3920*0b57cec5SDimitry Andric{
3921*0b57cec5SDimitry Andric}
3922*0b57cec5SDimitry Andric
3923*0b57cec5SDimitry Andrictemplate<class _Tp>
3924*0b57cec5SDimitry Andricinline
3925*0b57cec5SDimitry Andric_LIBCPP_CONSTEXPR
3926*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT
3927*0b57cec5SDimitry Andric    : __ptr_(0),
3928*0b57cec5SDimitry Andric      __cntrl_(0)
3929*0b57cec5SDimitry Andric{
3930*0b57cec5SDimitry Andric}
3931*0b57cec5SDimitry Andric
3932*0b57cec5SDimitry Andrictemplate<class _Tp>
3933*0b57cec5SDimitry Andrictemplate<class _Yp>
3934*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(_Yp* __p,
3935*0b57cec5SDimitry Andric                            typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
3936*0b57cec5SDimitry Andric    : __ptr_(__p)
3937*0b57cec5SDimitry Andric{
3938*0b57cec5SDimitry Andric    unique_ptr<_Yp> __hold(__p);
3939*0b57cec5SDimitry Andric    typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
3940*0b57cec5SDimitry Andric    typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, _AllocT > _CntrlBlk;
3941*0b57cec5SDimitry Andric    __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), _AllocT());
3942*0b57cec5SDimitry Andric    __hold.release();
3943*0b57cec5SDimitry Andric    __enable_weak_this(__p, __p);
3944*0b57cec5SDimitry Andric}
3945*0b57cec5SDimitry Andric
3946*0b57cec5SDimitry Andrictemplate<class _Tp>
3947*0b57cec5SDimitry Andrictemplate<class _Yp, class _Dp>
3948*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d,
3949*0b57cec5SDimitry Andric                            typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
3950*0b57cec5SDimitry Andric    : __ptr_(__p)
3951*0b57cec5SDimitry Andric{
3952*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3953*0b57cec5SDimitry Andric    try
3954*0b57cec5SDimitry Andric    {
3955*0b57cec5SDimitry Andric#endif  // _LIBCPP_NO_EXCEPTIONS
3956*0b57cec5SDimitry Andric        typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
3957*0b57cec5SDimitry Andric        typedef __shared_ptr_pointer<_Yp*, _Dp, _AllocT > _CntrlBlk;
3958*0b57cec5SDimitry Andric        __cntrl_ = new _CntrlBlk(__p, __d, _AllocT());
3959*0b57cec5SDimitry Andric        __enable_weak_this(__p, __p);
3960*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3961*0b57cec5SDimitry Andric    }
3962*0b57cec5SDimitry Andric    catch (...)
3963*0b57cec5SDimitry Andric    {
3964*0b57cec5SDimitry Andric        __d(__p);
3965*0b57cec5SDimitry Andric        throw;
3966*0b57cec5SDimitry Andric    }
3967*0b57cec5SDimitry Andric#endif  // _LIBCPP_NO_EXCEPTIONS
3968*0b57cec5SDimitry Andric}
3969*0b57cec5SDimitry Andric
3970*0b57cec5SDimitry Andrictemplate<class _Tp>
3971*0b57cec5SDimitry Andrictemplate<class _Dp>
3972*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d)
3973*0b57cec5SDimitry Andric    : __ptr_(0)
3974*0b57cec5SDimitry Andric{
3975*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3976*0b57cec5SDimitry Andric    try
3977*0b57cec5SDimitry Andric    {
3978*0b57cec5SDimitry Andric#endif  // _LIBCPP_NO_EXCEPTIONS
3979*0b57cec5SDimitry Andric        typedef typename __shared_ptr_default_allocator<_Tp>::type _AllocT;
3980*0b57cec5SDimitry Andric        typedef __shared_ptr_pointer<nullptr_t, _Dp, _AllocT > _CntrlBlk;
3981*0b57cec5SDimitry Andric        __cntrl_ = new _CntrlBlk(__p, __d, _AllocT());
3982*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3983*0b57cec5SDimitry Andric    }
3984*0b57cec5SDimitry Andric    catch (...)
3985*0b57cec5SDimitry Andric    {
3986*0b57cec5SDimitry Andric        __d(__p);
3987*0b57cec5SDimitry Andric        throw;
3988*0b57cec5SDimitry Andric    }
3989*0b57cec5SDimitry Andric#endif  // _LIBCPP_NO_EXCEPTIONS
3990*0b57cec5SDimitry Andric}
3991*0b57cec5SDimitry Andric
3992*0b57cec5SDimitry Andrictemplate<class _Tp>
3993*0b57cec5SDimitry Andrictemplate<class _Yp, class _Dp, class _Alloc>
3994*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a,
3995*0b57cec5SDimitry Andric                            typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
3996*0b57cec5SDimitry Andric    : __ptr_(__p)
3997*0b57cec5SDimitry Andric{
3998*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
3999*0b57cec5SDimitry Andric    try
4000*0b57cec5SDimitry Andric    {
4001*0b57cec5SDimitry Andric#endif  // _LIBCPP_NO_EXCEPTIONS
4002*0b57cec5SDimitry Andric        typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk;
4003*0b57cec5SDimitry Andric        typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
4004*0b57cec5SDimitry Andric        typedef __allocator_destructor<_A2> _D2;
4005*0b57cec5SDimitry Andric        _A2 __a2(__a);
4006*0b57cec5SDimitry Andric        unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4007*0b57cec5SDimitry Andric        ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4008*0b57cec5SDimitry Andric            _CntrlBlk(__p, __d, __a);
4009*0b57cec5SDimitry Andric        __cntrl_ = _VSTD::addressof(*__hold2.release());
4010*0b57cec5SDimitry Andric        __enable_weak_this(__p, __p);
4011*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
4012*0b57cec5SDimitry Andric    }
4013*0b57cec5SDimitry Andric    catch (...)
4014*0b57cec5SDimitry Andric    {
4015*0b57cec5SDimitry Andric        __d(__p);
4016*0b57cec5SDimitry Andric        throw;
4017*0b57cec5SDimitry Andric    }
4018*0b57cec5SDimitry Andric#endif  // _LIBCPP_NO_EXCEPTIONS
4019*0b57cec5SDimitry Andric}
4020*0b57cec5SDimitry Andric
4021*0b57cec5SDimitry Andrictemplate<class _Tp>
4022*0b57cec5SDimitry Andrictemplate<class _Dp, class _Alloc>
4023*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a)
4024*0b57cec5SDimitry Andric    : __ptr_(0)
4025*0b57cec5SDimitry Andric{
4026*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
4027*0b57cec5SDimitry Andric    try
4028*0b57cec5SDimitry Andric    {
4029*0b57cec5SDimitry Andric#endif  // _LIBCPP_NO_EXCEPTIONS
4030*0b57cec5SDimitry Andric        typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk;
4031*0b57cec5SDimitry Andric        typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
4032*0b57cec5SDimitry Andric        typedef __allocator_destructor<_A2> _D2;
4033*0b57cec5SDimitry Andric        _A2 __a2(__a);
4034*0b57cec5SDimitry Andric        unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4035*0b57cec5SDimitry Andric        ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4036*0b57cec5SDimitry Andric            _CntrlBlk(__p, __d, __a);
4037*0b57cec5SDimitry Andric        __cntrl_ = _VSTD::addressof(*__hold2.release());
4038*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_EXCEPTIONS
4039*0b57cec5SDimitry Andric    }
4040*0b57cec5SDimitry Andric    catch (...)
4041*0b57cec5SDimitry Andric    {
4042*0b57cec5SDimitry Andric        __d(__p);
4043*0b57cec5SDimitry Andric        throw;
4044*0b57cec5SDimitry Andric    }
4045*0b57cec5SDimitry Andric#endif  // _LIBCPP_NO_EXCEPTIONS
4046*0b57cec5SDimitry Andric}
4047*0b57cec5SDimitry Andric
4048*0b57cec5SDimitry Andrictemplate<class _Tp>
4049*0b57cec5SDimitry Andrictemplate<class _Yp>
4050*0b57cec5SDimitry Andricinline
4051*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT
4052*0b57cec5SDimitry Andric    : __ptr_(__p),
4053*0b57cec5SDimitry Andric      __cntrl_(__r.__cntrl_)
4054*0b57cec5SDimitry Andric{
4055*0b57cec5SDimitry Andric    if (__cntrl_)
4056*0b57cec5SDimitry Andric        __cntrl_->__add_shared();
4057*0b57cec5SDimitry Andric}
4058*0b57cec5SDimitry Andric
4059*0b57cec5SDimitry Andrictemplate<class _Tp>
4060*0b57cec5SDimitry Andricinline
4061*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT
4062*0b57cec5SDimitry Andric    : __ptr_(__r.__ptr_),
4063*0b57cec5SDimitry Andric      __cntrl_(__r.__cntrl_)
4064*0b57cec5SDimitry Andric{
4065*0b57cec5SDimitry Andric    if (__cntrl_)
4066*0b57cec5SDimitry Andric        __cntrl_->__add_shared();
4067*0b57cec5SDimitry Andric}
4068*0b57cec5SDimitry Andric
4069*0b57cec5SDimitry Andrictemplate<class _Tp>
4070*0b57cec5SDimitry Andrictemplate<class _Yp>
4071*0b57cec5SDimitry Andricinline
4072*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r,
4073*0b57cec5SDimitry Andric                            typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4074*0b57cec5SDimitry Andric         _NOEXCEPT
4075*0b57cec5SDimitry Andric    : __ptr_(__r.__ptr_),
4076*0b57cec5SDimitry Andric      __cntrl_(__r.__cntrl_)
4077*0b57cec5SDimitry Andric{
4078*0b57cec5SDimitry Andric    if (__cntrl_)
4079*0b57cec5SDimitry Andric        __cntrl_->__add_shared();
4080*0b57cec5SDimitry Andric}
4081*0b57cec5SDimitry Andric
4082*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4083*0b57cec5SDimitry Andric
4084*0b57cec5SDimitry Andrictemplate<class _Tp>
4085*0b57cec5SDimitry Andricinline
4086*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT
4087*0b57cec5SDimitry Andric    : __ptr_(__r.__ptr_),
4088*0b57cec5SDimitry Andric      __cntrl_(__r.__cntrl_)
4089*0b57cec5SDimitry Andric{
4090*0b57cec5SDimitry Andric    __r.__ptr_ = 0;
4091*0b57cec5SDimitry Andric    __r.__cntrl_ = 0;
4092*0b57cec5SDimitry Andric}
4093*0b57cec5SDimitry Andric
4094*0b57cec5SDimitry Andrictemplate<class _Tp>
4095*0b57cec5SDimitry Andrictemplate<class _Yp>
4096*0b57cec5SDimitry Andricinline
4097*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r,
4098*0b57cec5SDimitry Andric                            typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4099*0b57cec5SDimitry Andric         _NOEXCEPT
4100*0b57cec5SDimitry Andric    : __ptr_(__r.__ptr_),
4101*0b57cec5SDimitry Andric      __cntrl_(__r.__cntrl_)
4102*0b57cec5SDimitry Andric{
4103*0b57cec5SDimitry Andric    __r.__ptr_ = 0;
4104*0b57cec5SDimitry Andric    __r.__cntrl_ = 0;
4105*0b57cec5SDimitry Andric}
4106*0b57cec5SDimitry Andric
4107*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4108*0b57cec5SDimitry Andric
4109*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
4110*0b57cec5SDimitry Andrictemplate<class _Tp>
4111*0b57cec5SDimitry Andrictemplate<class _Yp>
4112*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4113*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r,
4114*0b57cec5SDimitry Andric#else
4115*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r,
4116*0b57cec5SDimitry Andric#endif
4117*0b57cec5SDimitry Andric                            typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4118*0b57cec5SDimitry Andric    : __ptr_(__r.get())
4119*0b57cec5SDimitry Andric{
4120*0b57cec5SDimitry Andric    typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk;
4121*0b57cec5SDimitry Andric    __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>());
4122*0b57cec5SDimitry Andric    __enable_weak_this(__r.get(), __r.get());
4123*0b57cec5SDimitry Andric    __r.release();
4124*0b57cec5SDimitry Andric}
4125*0b57cec5SDimitry Andric#endif
4126*0b57cec5SDimitry Andric
4127*0b57cec5SDimitry Andrictemplate<class _Tp>
4128*0b57cec5SDimitry Andrictemplate <class _Yp, class _Dp>
4129*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4130*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r,
4131*0b57cec5SDimitry Andric#else
4132*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r,
4133*0b57cec5SDimitry Andric#endif
4134*0b57cec5SDimitry Andric                            typename enable_if
4135*0b57cec5SDimitry Andric                            <
4136*0b57cec5SDimitry Andric                                !is_lvalue_reference<_Dp>::value &&
4137*0b57cec5SDimitry Andric                                !is_array<_Yp>::value &&
4138*0b57cec5SDimitry Andric                                is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
4139*0b57cec5SDimitry Andric                                __nat
4140*0b57cec5SDimitry Andric                            >::type)
4141*0b57cec5SDimitry Andric    : __ptr_(__r.get())
4142*0b57cec5SDimitry Andric{
4143*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER > 11
4144*0b57cec5SDimitry Andric    if (__ptr_ == nullptr)
4145*0b57cec5SDimitry Andric        __cntrl_ = nullptr;
4146*0b57cec5SDimitry Andric    else
4147*0b57cec5SDimitry Andric#endif
4148*0b57cec5SDimitry Andric    {
4149*0b57cec5SDimitry Andric        typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
4150*0b57cec5SDimitry Andric        typedef __shared_ptr_pointer<_Yp*, _Dp, _AllocT > _CntrlBlk;
4151*0b57cec5SDimitry Andric        __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), _AllocT());
4152*0b57cec5SDimitry Andric        __enable_weak_this(__r.get(), __r.get());
4153*0b57cec5SDimitry Andric    }
4154*0b57cec5SDimitry Andric    __r.release();
4155*0b57cec5SDimitry Andric}
4156*0b57cec5SDimitry Andric
4157*0b57cec5SDimitry Andrictemplate<class _Tp>
4158*0b57cec5SDimitry Andrictemplate <class _Yp, class _Dp>
4159*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4160*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r,
4161*0b57cec5SDimitry Andric#else
4162*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r,
4163*0b57cec5SDimitry Andric#endif
4164*0b57cec5SDimitry Andric                            typename enable_if
4165*0b57cec5SDimitry Andric                            <
4166*0b57cec5SDimitry Andric                                is_lvalue_reference<_Dp>::value &&
4167*0b57cec5SDimitry Andric                                !is_array<_Yp>::value &&
4168*0b57cec5SDimitry Andric                                is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
4169*0b57cec5SDimitry Andric                                __nat
4170*0b57cec5SDimitry Andric                            >::type)
4171*0b57cec5SDimitry Andric    : __ptr_(__r.get())
4172*0b57cec5SDimitry Andric{
4173*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER > 11
4174*0b57cec5SDimitry Andric    if (__ptr_ == nullptr)
4175*0b57cec5SDimitry Andric        __cntrl_ = nullptr;
4176*0b57cec5SDimitry Andric    else
4177*0b57cec5SDimitry Andric#endif
4178*0b57cec5SDimitry Andric    {
4179*0b57cec5SDimitry Andric        typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
4180*0b57cec5SDimitry Andric        typedef __shared_ptr_pointer<_Yp*,
4181*0b57cec5SDimitry Andric                                     reference_wrapper<typename remove_reference<_Dp>::type>,
4182*0b57cec5SDimitry Andric                                     _AllocT > _CntrlBlk;
4183*0b57cec5SDimitry Andric        __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), _AllocT());
4184*0b57cec5SDimitry Andric        __enable_weak_this(__r.get(), __r.get());
4185*0b57cec5SDimitry Andric    }
4186*0b57cec5SDimitry Andric    __r.release();
4187*0b57cec5SDimitry Andric}
4188*0b57cec5SDimitry Andric
4189*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_VARIADICS
4190*0b57cec5SDimitry Andric
4191*0b57cec5SDimitry Andrictemplate<class _Tp>
4192*0b57cec5SDimitry Andrictemplate<class ..._Args>
4193*0b57cec5SDimitry Andricshared_ptr<_Tp>
4194*0b57cec5SDimitry Andricshared_ptr<_Tp>::make_shared(_Args&& ...__args)
4195*0b57cec5SDimitry Andric{
4196*0b57cec5SDimitry Andric    static_assert( is_constructible<_Tp, _Args...>::value, "Can't construct object in make_shared" );
4197*0b57cec5SDimitry Andric    typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4198*0b57cec5SDimitry Andric    typedef allocator<_CntrlBlk> _A2;
4199*0b57cec5SDimitry Andric    typedef __allocator_destructor<_A2> _D2;
4200*0b57cec5SDimitry Andric    _A2 __a2;
4201*0b57cec5SDimitry Andric    unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4202*0b57cec5SDimitry Andric    ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...);
4203*0b57cec5SDimitry Andric    shared_ptr<_Tp> __r;
4204*0b57cec5SDimitry Andric    __r.__ptr_ = __hold2.get()->get();
4205*0b57cec5SDimitry Andric    __r.__cntrl_ = __hold2.release();
4206*0b57cec5SDimitry Andric    __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4207*0b57cec5SDimitry Andric    return __r;
4208*0b57cec5SDimitry Andric}
4209*0b57cec5SDimitry Andric
4210*0b57cec5SDimitry Andrictemplate<class _Tp>
4211*0b57cec5SDimitry Andrictemplate<class _Alloc, class ..._Args>
4212*0b57cec5SDimitry Andricshared_ptr<_Tp>
4213*0b57cec5SDimitry Andricshared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args)
4214*0b57cec5SDimitry Andric{
4215*0b57cec5SDimitry Andric    static_assert( is_constructible<_Tp, _Args...>::value, "Can't construct object in allocate_shared" );
4216*0b57cec5SDimitry Andric    typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4217*0b57cec5SDimitry Andric    typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
4218*0b57cec5SDimitry Andric    typedef __allocator_destructor<_A2> _D2;
4219*0b57cec5SDimitry Andric    _A2 __a2(__a);
4220*0b57cec5SDimitry Andric    unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4221*0b57cec5SDimitry Andric    ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4222*0b57cec5SDimitry Andric        _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...);
4223*0b57cec5SDimitry Andric    shared_ptr<_Tp> __r;
4224*0b57cec5SDimitry Andric    __r.__ptr_ = __hold2.get()->get();
4225*0b57cec5SDimitry Andric    __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4226*0b57cec5SDimitry Andric    __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4227*0b57cec5SDimitry Andric    return __r;
4228*0b57cec5SDimitry Andric}
4229*0b57cec5SDimitry Andric
4230*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_VARIADICS
4231*0b57cec5SDimitry Andric
4232*0b57cec5SDimitry Andrictemplate<class _Tp>
4233*0b57cec5SDimitry Andricshared_ptr<_Tp>
4234*0b57cec5SDimitry Andricshared_ptr<_Tp>::make_shared()
4235*0b57cec5SDimitry Andric{
4236*0b57cec5SDimitry Andric    static_assert((is_constructible<_Tp>::value), "Can't construct object in make_shared" );
4237*0b57cec5SDimitry Andric    typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4238*0b57cec5SDimitry Andric    typedef allocator<_CntrlBlk> _Alloc2;
4239*0b57cec5SDimitry Andric    typedef __allocator_destructor<_Alloc2> _D2;
4240*0b57cec5SDimitry Andric    _Alloc2 __alloc2;
4241*0b57cec5SDimitry Andric    unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4242*0b57cec5SDimitry Andric    ::new(__hold2.get()) _CntrlBlk(__alloc2);
4243*0b57cec5SDimitry Andric    shared_ptr<_Tp> __r;
4244*0b57cec5SDimitry Andric    __r.__ptr_ = __hold2.get()->get();
4245*0b57cec5SDimitry Andric    __r.__cntrl_ = __hold2.release();
4246*0b57cec5SDimitry Andric    __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4247*0b57cec5SDimitry Andric    return __r;
4248*0b57cec5SDimitry Andric}
4249*0b57cec5SDimitry Andric
4250*0b57cec5SDimitry Andrictemplate<class _Tp>
4251*0b57cec5SDimitry Andrictemplate<class _A0>
4252*0b57cec5SDimitry Andricshared_ptr<_Tp>
4253*0b57cec5SDimitry Andricshared_ptr<_Tp>::make_shared(_A0& __a0)
4254*0b57cec5SDimitry Andric{
4255*0b57cec5SDimitry Andric    static_assert((is_constructible<_Tp, _A0>::value), "Can't construct object in make_shared" );
4256*0b57cec5SDimitry Andric    typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4257*0b57cec5SDimitry Andric    typedef allocator<_CntrlBlk> _Alloc2;
4258*0b57cec5SDimitry Andric    typedef __allocator_destructor<_Alloc2> _D2;
4259*0b57cec5SDimitry Andric    _Alloc2 __alloc2;
4260*0b57cec5SDimitry Andric    unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4261*0b57cec5SDimitry Andric    ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0);
4262*0b57cec5SDimitry Andric    shared_ptr<_Tp> __r;
4263*0b57cec5SDimitry Andric    __r.__ptr_ = __hold2.get()->get();
4264*0b57cec5SDimitry Andric    __r.__cntrl_ = __hold2.release();
4265*0b57cec5SDimitry Andric    __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4266*0b57cec5SDimitry Andric    return __r;
4267*0b57cec5SDimitry Andric}
4268*0b57cec5SDimitry Andric
4269*0b57cec5SDimitry Andrictemplate<class _Tp>
4270*0b57cec5SDimitry Andrictemplate<class _A0, class _A1>
4271*0b57cec5SDimitry Andricshared_ptr<_Tp>
4272*0b57cec5SDimitry Andricshared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1)
4273*0b57cec5SDimitry Andric{
4274*0b57cec5SDimitry Andric    static_assert((is_constructible<_Tp, _A0, _A1>::value), "Can't construct object in make_shared" );
4275*0b57cec5SDimitry Andric    typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4276*0b57cec5SDimitry Andric    typedef allocator<_CntrlBlk> _Alloc2;
4277*0b57cec5SDimitry Andric    typedef __allocator_destructor<_Alloc2> _D2;
4278*0b57cec5SDimitry Andric    _Alloc2 __alloc2;
4279*0b57cec5SDimitry Andric    unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4280*0b57cec5SDimitry Andric    ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1);
4281*0b57cec5SDimitry Andric    shared_ptr<_Tp> __r;
4282*0b57cec5SDimitry Andric    __r.__ptr_ = __hold2.get()->get();
4283*0b57cec5SDimitry Andric    __r.__cntrl_ = __hold2.release();
4284*0b57cec5SDimitry Andric    __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4285*0b57cec5SDimitry Andric    return __r;
4286*0b57cec5SDimitry Andric}
4287*0b57cec5SDimitry Andric
4288*0b57cec5SDimitry Andrictemplate<class _Tp>
4289*0b57cec5SDimitry Andrictemplate<class _A0, class _A1, class _A2>
4290*0b57cec5SDimitry Andricshared_ptr<_Tp>
4291*0b57cec5SDimitry Andricshared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2)
4292*0b57cec5SDimitry Andric{
4293*0b57cec5SDimitry Andric    static_assert((is_constructible<_Tp, _A0, _A1, _A2>::value), "Can't construct object in make_shared" );
4294*0b57cec5SDimitry Andric    typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4295*0b57cec5SDimitry Andric    typedef allocator<_CntrlBlk> _Alloc2;
4296*0b57cec5SDimitry Andric    typedef __allocator_destructor<_Alloc2> _D2;
4297*0b57cec5SDimitry Andric    _Alloc2 __alloc2;
4298*0b57cec5SDimitry Andric    unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4299*0b57cec5SDimitry Andric    ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2);
4300*0b57cec5SDimitry Andric    shared_ptr<_Tp> __r;
4301*0b57cec5SDimitry Andric    __r.__ptr_ = __hold2.get()->get();
4302*0b57cec5SDimitry Andric    __r.__cntrl_ = __hold2.release();
4303*0b57cec5SDimitry Andric    __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4304*0b57cec5SDimitry Andric    return __r;
4305*0b57cec5SDimitry Andric}
4306*0b57cec5SDimitry Andric
4307*0b57cec5SDimitry Andrictemplate<class _Tp>
4308*0b57cec5SDimitry Andrictemplate<class _Alloc>
4309*0b57cec5SDimitry Andricshared_ptr<_Tp>
4310*0b57cec5SDimitry Andricshared_ptr<_Tp>::allocate_shared(const _Alloc& __a)
4311*0b57cec5SDimitry Andric{
4312*0b57cec5SDimitry Andric    static_assert((is_constructible<_Tp>::value), "Can't construct object in allocate_shared" );
4313*0b57cec5SDimitry Andric    typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4314*0b57cec5SDimitry Andric    typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4315*0b57cec5SDimitry Andric    typedef __allocator_destructor<_Alloc2> _D2;
4316*0b57cec5SDimitry Andric    _Alloc2 __alloc2(__a);
4317*0b57cec5SDimitry Andric    unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4318*0b57cec5SDimitry Andric    ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4319*0b57cec5SDimitry Andric        _CntrlBlk(__a);
4320*0b57cec5SDimitry Andric    shared_ptr<_Tp> __r;
4321*0b57cec5SDimitry Andric    __r.__ptr_ = __hold2.get()->get();
4322*0b57cec5SDimitry Andric    __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4323*0b57cec5SDimitry Andric    __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4324*0b57cec5SDimitry Andric    return __r;
4325*0b57cec5SDimitry Andric}
4326*0b57cec5SDimitry Andric
4327*0b57cec5SDimitry Andrictemplate<class _Tp>
4328*0b57cec5SDimitry Andrictemplate<class _Alloc, class _A0>
4329*0b57cec5SDimitry Andricshared_ptr<_Tp>
4330*0b57cec5SDimitry Andricshared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0)
4331*0b57cec5SDimitry Andric{
4332*0b57cec5SDimitry Andric    static_assert((is_constructible<_Tp, _A0>::value), "Can't construct object in allocate_shared" );
4333*0b57cec5SDimitry Andric    typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4334*0b57cec5SDimitry Andric    typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4335*0b57cec5SDimitry Andric    typedef __allocator_destructor<_Alloc2> _D2;
4336*0b57cec5SDimitry Andric    _Alloc2 __alloc2(__a);
4337*0b57cec5SDimitry Andric    unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4338*0b57cec5SDimitry Andric    ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4339*0b57cec5SDimitry Andric        _CntrlBlk(__a, __a0);
4340*0b57cec5SDimitry Andric    shared_ptr<_Tp> __r;
4341*0b57cec5SDimitry Andric    __r.__ptr_ = __hold2.get()->get();
4342*0b57cec5SDimitry Andric    __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4343*0b57cec5SDimitry Andric    __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4344*0b57cec5SDimitry Andric    return __r;
4345*0b57cec5SDimitry Andric}
4346*0b57cec5SDimitry Andric
4347*0b57cec5SDimitry Andrictemplate<class _Tp>
4348*0b57cec5SDimitry Andrictemplate<class _Alloc, class _A0, class _A1>
4349*0b57cec5SDimitry Andricshared_ptr<_Tp>
4350*0b57cec5SDimitry Andricshared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1)
4351*0b57cec5SDimitry Andric{
4352*0b57cec5SDimitry Andric    static_assert((is_constructible<_Tp, _A0, _A1>::value), "Can't construct object in allocate_shared" );
4353*0b57cec5SDimitry Andric    typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4354*0b57cec5SDimitry Andric    typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4355*0b57cec5SDimitry Andric    typedef __allocator_destructor<_Alloc2> _D2;
4356*0b57cec5SDimitry Andric    _Alloc2 __alloc2(__a);
4357*0b57cec5SDimitry Andric    unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4358*0b57cec5SDimitry Andric    ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4359*0b57cec5SDimitry Andric        _CntrlBlk(__a, __a0, __a1);
4360*0b57cec5SDimitry Andric    shared_ptr<_Tp> __r;
4361*0b57cec5SDimitry Andric    __r.__ptr_ = __hold2.get()->get();
4362*0b57cec5SDimitry Andric    __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4363*0b57cec5SDimitry Andric    __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4364*0b57cec5SDimitry Andric    return __r;
4365*0b57cec5SDimitry Andric}
4366*0b57cec5SDimitry Andric
4367*0b57cec5SDimitry Andrictemplate<class _Tp>
4368*0b57cec5SDimitry Andrictemplate<class _Alloc, class _A0, class _A1, class _A2>
4369*0b57cec5SDimitry Andricshared_ptr<_Tp>
4370*0b57cec5SDimitry Andricshared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2)
4371*0b57cec5SDimitry Andric{
4372*0b57cec5SDimitry Andric    static_assert((is_constructible<_Tp, _A0, _A1, _A2>::value), "Can't construct object in allocate_shared" );
4373*0b57cec5SDimitry Andric    typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4374*0b57cec5SDimitry Andric    typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4375*0b57cec5SDimitry Andric    typedef __allocator_destructor<_Alloc2> _D2;
4376*0b57cec5SDimitry Andric    _Alloc2 __alloc2(__a);
4377*0b57cec5SDimitry Andric    unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4378*0b57cec5SDimitry Andric    ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4379*0b57cec5SDimitry Andric        _CntrlBlk(__a, __a0, __a1, __a2);
4380*0b57cec5SDimitry Andric    shared_ptr<_Tp> __r;
4381*0b57cec5SDimitry Andric    __r.__ptr_ = __hold2.get()->get();
4382*0b57cec5SDimitry Andric    __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4383*0b57cec5SDimitry Andric    __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4384*0b57cec5SDimitry Andric    return __r;
4385*0b57cec5SDimitry Andric}
4386*0b57cec5SDimitry Andric
4387*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_VARIADICS
4388*0b57cec5SDimitry Andric
4389*0b57cec5SDimitry Andrictemplate<class _Tp>
4390*0b57cec5SDimitry Andricshared_ptr<_Tp>::~shared_ptr()
4391*0b57cec5SDimitry Andric{
4392*0b57cec5SDimitry Andric    if (__cntrl_)
4393*0b57cec5SDimitry Andric        __cntrl_->__release_shared();
4394*0b57cec5SDimitry Andric}
4395*0b57cec5SDimitry Andric
4396*0b57cec5SDimitry Andrictemplate<class _Tp>
4397*0b57cec5SDimitry Andricinline
4398*0b57cec5SDimitry Andricshared_ptr<_Tp>&
4399*0b57cec5SDimitry Andricshared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT
4400*0b57cec5SDimitry Andric{
4401*0b57cec5SDimitry Andric    shared_ptr(__r).swap(*this);
4402*0b57cec5SDimitry Andric    return *this;
4403*0b57cec5SDimitry Andric}
4404*0b57cec5SDimitry Andric
4405*0b57cec5SDimitry Andrictemplate<class _Tp>
4406*0b57cec5SDimitry Andrictemplate<class _Yp>
4407*0b57cec5SDimitry Andricinline
4408*0b57cec5SDimitry Andrictypename enable_if
4409*0b57cec5SDimitry Andric<
4410*0b57cec5SDimitry Andric    is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4411*0b57cec5SDimitry Andric    shared_ptr<_Tp>&
4412*0b57cec5SDimitry Andric>::type
4413*0b57cec5SDimitry Andricshared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT
4414*0b57cec5SDimitry Andric{
4415*0b57cec5SDimitry Andric    shared_ptr(__r).swap(*this);
4416*0b57cec5SDimitry Andric    return *this;
4417*0b57cec5SDimitry Andric}
4418*0b57cec5SDimitry Andric
4419*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4420*0b57cec5SDimitry Andric
4421*0b57cec5SDimitry Andrictemplate<class _Tp>
4422*0b57cec5SDimitry Andricinline
4423*0b57cec5SDimitry Andricshared_ptr<_Tp>&
4424*0b57cec5SDimitry Andricshared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT
4425*0b57cec5SDimitry Andric{
4426*0b57cec5SDimitry Andric    shared_ptr(_VSTD::move(__r)).swap(*this);
4427*0b57cec5SDimitry Andric    return *this;
4428*0b57cec5SDimitry Andric}
4429*0b57cec5SDimitry Andric
4430*0b57cec5SDimitry Andrictemplate<class _Tp>
4431*0b57cec5SDimitry Andrictemplate<class _Yp>
4432*0b57cec5SDimitry Andricinline
4433*0b57cec5SDimitry Andrictypename enable_if
4434*0b57cec5SDimitry Andric<
4435*0b57cec5SDimitry Andric    is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4436*0b57cec5SDimitry Andric    shared_ptr<_Tp>&
4437*0b57cec5SDimitry Andric>::type
4438*0b57cec5SDimitry Andricshared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r)
4439*0b57cec5SDimitry Andric{
4440*0b57cec5SDimitry Andric    shared_ptr(_VSTD::move(__r)).swap(*this);
4441*0b57cec5SDimitry Andric    return *this;
4442*0b57cec5SDimitry Andric}
4443*0b57cec5SDimitry Andric
4444*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
4445*0b57cec5SDimitry Andrictemplate<class _Tp>
4446*0b57cec5SDimitry Andrictemplate<class _Yp>
4447*0b57cec5SDimitry Andricinline
4448*0b57cec5SDimitry Andrictypename enable_if
4449*0b57cec5SDimitry Andric<
4450*0b57cec5SDimitry Andric    !is_array<_Yp>::value &&
4451*0b57cec5SDimitry Andric    is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4452*0b57cec5SDimitry Andric    shared_ptr<_Tp>
4453*0b57cec5SDimitry Andric>::type&
4454*0b57cec5SDimitry Andricshared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r)
4455*0b57cec5SDimitry Andric{
4456*0b57cec5SDimitry Andric    shared_ptr(_VSTD::move(__r)).swap(*this);
4457*0b57cec5SDimitry Andric    return *this;
4458*0b57cec5SDimitry Andric}
4459*0b57cec5SDimitry Andric#endif
4460*0b57cec5SDimitry Andric
4461*0b57cec5SDimitry Andrictemplate<class _Tp>
4462*0b57cec5SDimitry Andrictemplate <class _Yp, class _Dp>
4463*0b57cec5SDimitry Andricinline
4464*0b57cec5SDimitry Andrictypename enable_if
4465*0b57cec5SDimitry Andric<
4466*0b57cec5SDimitry Andric    !is_array<_Yp>::value &&
4467*0b57cec5SDimitry Andric    is_convertible<typename unique_ptr<_Yp, _Dp>::pointer,
4468*0b57cec5SDimitry Andric                   typename shared_ptr<_Tp>::element_type*>::value,
4469*0b57cec5SDimitry Andric    shared_ptr<_Tp>&
4470*0b57cec5SDimitry Andric>::type
4471*0b57cec5SDimitry Andricshared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r)
4472*0b57cec5SDimitry Andric{
4473*0b57cec5SDimitry Andric    shared_ptr(_VSTD::move(__r)).swap(*this);
4474*0b57cec5SDimitry Andric    return *this;
4475*0b57cec5SDimitry Andric}
4476*0b57cec5SDimitry Andric
4477*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4478*0b57cec5SDimitry Andric
4479*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
4480*0b57cec5SDimitry Andrictemplate<class _Tp>
4481*0b57cec5SDimitry Andrictemplate<class _Yp>
4482*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4483*0b57cec5SDimitry Andrictypename enable_if
4484*0b57cec5SDimitry Andric<
4485*0b57cec5SDimitry Andric    !is_array<_Yp>::value &&
4486*0b57cec5SDimitry Andric    is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4487*0b57cec5SDimitry Andric    shared_ptr<_Tp>&
4488*0b57cec5SDimitry Andric>::type
4489*0b57cec5SDimitry Andricshared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r)
4490*0b57cec5SDimitry Andric{
4491*0b57cec5SDimitry Andric    shared_ptr(__r).swap(*this);
4492*0b57cec5SDimitry Andric    return *this;
4493*0b57cec5SDimitry Andric}
4494*0b57cec5SDimitry Andric#endif
4495*0b57cec5SDimitry Andric
4496*0b57cec5SDimitry Andrictemplate<class _Tp>
4497*0b57cec5SDimitry Andrictemplate <class _Yp, class _Dp>
4498*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4499*0b57cec5SDimitry Andrictypename enable_if
4500*0b57cec5SDimitry Andric<
4501*0b57cec5SDimitry Andric    !is_array<_Yp>::value &&
4502*0b57cec5SDimitry Andric    is_convertible<typename unique_ptr<_Yp, _Dp>::pointer,
4503*0b57cec5SDimitry Andric                   typename shared_ptr<_Tp>::element_type*>::value,
4504*0b57cec5SDimitry Andric    shared_ptr<_Tp>&
4505*0b57cec5SDimitry Andric>::type
4506*0b57cec5SDimitry Andricshared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r)
4507*0b57cec5SDimitry Andric{
4508*0b57cec5SDimitry Andric    shared_ptr(_VSTD::move(__r)).swap(*this);
4509*0b57cec5SDimitry Andric    return *this;
4510*0b57cec5SDimitry Andric}
4511*0b57cec5SDimitry Andric
4512*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4513*0b57cec5SDimitry Andric
4514*0b57cec5SDimitry Andrictemplate<class _Tp>
4515*0b57cec5SDimitry Andricinline
4516*0b57cec5SDimitry Andricvoid
4517*0b57cec5SDimitry Andricshared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT
4518*0b57cec5SDimitry Andric{
4519*0b57cec5SDimitry Andric    _VSTD::swap(__ptr_, __r.__ptr_);
4520*0b57cec5SDimitry Andric    _VSTD::swap(__cntrl_, __r.__cntrl_);
4521*0b57cec5SDimitry Andric}
4522*0b57cec5SDimitry Andric
4523*0b57cec5SDimitry Andrictemplate<class _Tp>
4524*0b57cec5SDimitry Andricinline
4525*0b57cec5SDimitry Andricvoid
4526*0b57cec5SDimitry Andricshared_ptr<_Tp>::reset() _NOEXCEPT
4527*0b57cec5SDimitry Andric{
4528*0b57cec5SDimitry Andric    shared_ptr().swap(*this);
4529*0b57cec5SDimitry Andric}
4530*0b57cec5SDimitry Andric
4531*0b57cec5SDimitry Andrictemplate<class _Tp>
4532*0b57cec5SDimitry Andrictemplate<class _Yp>
4533*0b57cec5SDimitry Andricinline
4534*0b57cec5SDimitry Andrictypename enable_if
4535*0b57cec5SDimitry Andric<
4536*0b57cec5SDimitry Andric    is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4537*0b57cec5SDimitry Andric    void
4538*0b57cec5SDimitry Andric>::type
4539*0b57cec5SDimitry Andricshared_ptr<_Tp>::reset(_Yp* __p)
4540*0b57cec5SDimitry Andric{
4541*0b57cec5SDimitry Andric    shared_ptr(__p).swap(*this);
4542*0b57cec5SDimitry Andric}
4543*0b57cec5SDimitry Andric
4544*0b57cec5SDimitry Andrictemplate<class _Tp>
4545*0b57cec5SDimitry Andrictemplate<class _Yp, class _Dp>
4546*0b57cec5SDimitry Andricinline
4547*0b57cec5SDimitry Andrictypename enable_if
4548*0b57cec5SDimitry Andric<
4549*0b57cec5SDimitry Andric    is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4550*0b57cec5SDimitry Andric    void
4551*0b57cec5SDimitry Andric>::type
4552*0b57cec5SDimitry Andricshared_ptr<_Tp>::reset(_Yp* __p, _Dp __d)
4553*0b57cec5SDimitry Andric{
4554*0b57cec5SDimitry Andric    shared_ptr(__p, __d).swap(*this);
4555*0b57cec5SDimitry Andric}
4556*0b57cec5SDimitry Andric
4557*0b57cec5SDimitry Andrictemplate<class _Tp>
4558*0b57cec5SDimitry Andrictemplate<class _Yp, class _Dp, class _Alloc>
4559*0b57cec5SDimitry Andricinline
4560*0b57cec5SDimitry Andrictypename enable_if
4561*0b57cec5SDimitry Andric<
4562*0b57cec5SDimitry Andric    is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4563*0b57cec5SDimitry Andric    void
4564*0b57cec5SDimitry Andric>::type
4565*0b57cec5SDimitry Andricshared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a)
4566*0b57cec5SDimitry Andric{
4567*0b57cec5SDimitry Andric    shared_ptr(__p, __d, __a).swap(*this);
4568*0b57cec5SDimitry Andric}
4569*0b57cec5SDimitry Andric
4570*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_VARIADICS
4571*0b57cec5SDimitry Andric
4572*0b57cec5SDimitry Andrictemplate<class _Tp, class ..._Args>
4573*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4574*0b57cec5SDimitry Andrictypename enable_if
4575*0b57cec5SDimitry Andric<
4576*0b57cec5SDimitry Andric    !is_array<_Tp>::value,
4577*0b57cec5SDimitry Andric    shared_ptr<_Tp>
4578*0b57cec5SDimitry Andric>::type
4579*0b57cec5SDimitry Andricmake_shared(_Args&& ...__args)
4580*0b57cec5SDimitry Andric{
4581*0b57cec5SDimitry Andric    return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...);
4582*0b57cec5SDimitry Andric}
4583*0b57cec5SDimitry Andric
4584*0b57cec5SDimitry Andrictemplate<class _Tp, class _Alloc, class ..._Args>
4585*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4586*0b57cec5SDimitry Andrictypename enable_if
4587*0b57cec5SDimitry Andric<
4588*0b57cec5SDimitry Andric    !is_array<_Tp>::value,
4589*0b57cec5SDimitry Andric    shared_ptr<_Tp>
4590*0b57cec5SDimitry Andric>::type
4591*0b57cec5SDimitry Andricallocate_shared(const _Alloc& __a, _Args&& ...__args)
4592*0b57cec5SDimitry Andric{
4593*0b57cec5SDimitry Andric    return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...);
4594*0b57cec5SDimitry Andric}
4595*0b57cec5SDimitry Andric
4596*0b57cec5SDimitry Andric#else  // _LIBCPP_HAS_NO_VARIADICS
4597*0b57cec5SDimitry Andric
4598*0b57cec5SDimitry Andrictemplate<class _Tp>
4599*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4600*0b57cec5SDimitry Andricshared_ptr<_Tp>
4601*0b57cec5SDimitry Andricmake_shared()
4602*0b57cec5SDimitry Andric{
4603*0b57cec5SDimitry Andric    return shared_ptr<_Tp>::make_shared();
4604*0b57cec5SDimitry Andric}
4605*0b57cec5SDimitry Andric
4606*0b57cec5SDimitry Andrictemplate<class _Tp, class _A0>
4607*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4608*0b57cec5SDimitry Andricshared_ptr<_Tp>
4609*0b57cec5SDimitry Andricmake_shared(_A0& __a0)
4610*0b57cec5SDimitry Andric{
4611*0b57cec5SDimitry Andric    return shared_ptr<_Tp>::make_shared(__a0);
4612*0b57cec5SDimitry Andric}
4613*0b57cec5SDimitry Andric
4614*0b57cec5SDimitry Andrictemplate<class _Tp, class _A0, class _A1>
4615*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4616*0b57cec5SDimitry Andricshared_ptr<_Tp>
4617*0b57cec5SDimitry Andricmake_shared(_A0& __a0, _A1& __a1)
4618*0b57cec5SDimitry Andric{
4619*0b57cec5SDimitry Andric    return shared_ptr<_Tp>::make_shared(__a0, __a1);
4620*0b57cec5SDimitry Andric}
4621*0b57cec5SDimitry Andric
4622*0b57cec5SDimitry Andrictemplate<class _Tp, class _A0, class _A1, class _A2>
4623*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4624*0b57cec5SDimitry Andricshared_ptr<_Tp>
4625*0b57cec5SDimitry Andricmake_shared(_A0& __a0, _A1& __a1, _A2& __a2)
4626*0b57cec5SDimitry Andric{
4627*0b57cec5SDimitry Andric    return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2);
4628*0b57cec5SDimitry Andric}
4629*0b57cec5SDimitry Andric
4630*0b57cec5SDimitry Andrictemplate<class _Tp, class _Alloc>
4631*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4632*0b57cec5SDimitry Andricshared_ptr<_Tp>
4633*0b57cec5SDimitry Andricallocate_shared(const _Alloc& __a)
4634*0b57cec5SDimitry Andric{
4635*0b57cec5SDimitry Andric    return shared_ptr<_Tp>::allocate_shared(__a);
4636*0b57cec5SDimitry Andric}
4637*0b57cec5SDimitry Andric
4638*0b57cec5SDimitry Andrictemplate<class _Tp, class _Alloc, class _A0>
4639*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4640*0b57cec5SDimitry Andricshared_ptr<_Tp>
4641*0b57cec5SDimitry Andricallocate_shared(const _Alloc& __a, _A0& __a0)
4642*0b57cec5SDimitry Andric{
4643*0b57cec5SDimitry Andric    return shared_ptr<_Tp>::allocate_shared(__a, __a0);
4644*0b57cec5SDimitry Andric}
4645*0b57cec5SDimitry Andric
4646*0b57cec5SDimitry Andrictemplate<class _Tp, class _Alloc, class _A0, class _A1>
4647*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4648*0b57cec5SDimitry Andricshared_ptr<_Tp>
4649*0b57cec5SDimitry Andricallocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1)
4650*0b57cec5SDimitry Andric{
4651*0b57cec5SDimitry Andric    return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1);
4652*0b57cec5SDimitry Andric}
4653*0b57cec5SDimitry Andric
4654*0b57cec5SDimitry Andrictemplate<class _Tp, class _Alloc, class _A0, class _A1, class _A2>
4655*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4656*0b57cec5SDimitry Andricshared_ptr<_Tp>
4657*0b57cec5SDimitry Andricallocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2)
4658*0b57cec5SDimitry Andric{
4659*0b57cec5SDimitry Andric    return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2);
4660*0b57cec5SDimitry Andric}
4661*0b57cec5SDimitry Andric
4662*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_VARIADICS
4663*0b57cec5SDimitry Andric
4664*0b57cec5SDimitry Andrictemplate<class _Tp, class _Up>
4665*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4666*0b57cec5SDimitry Andricbool
4667*0b57cec5SDimitry Andricoperator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4668*0b57cec5SDimitry Andric{
4669*0b57cec5SDimitry Andric    return __x.get() == __y.get();
4670*0b57cec5SDimitry Andric}
4671*0b57cec5SDimitry Andric
4672*0b57cec5SDimitry Andrictemplate<class _Tp, class _Up>
4673*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4674*0b57cec5SDimitry Andricbool
4675*0b57cec5SDimitry Andricoperator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4676*0b57cec5SDimitry Andric{
4677*0b57cec5SDimitry Andric    return !(__x == __y);
4678*0b57cec5SDimitry Andric}
4679*0b57cec5SDimitry Andric
4680*0b57cec5SDimitry Andrictemplate<class _Tp, class _Up>
4681*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4682*0b57cec5SDimitry Andricbool
4683*0b57cec5SDimitry Andricoperator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4684*0b57cec5SDimitry Andric{
4685*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER <= 11
4686*0b57cec5SDimitry Andric    typedef typename common_type<_Tp*, _Up*>::type _Vp;
4687*0b57cec5SDimitry Andric    return less<_Vp>()(__x.get(), __y.get());
4688*0b57cec5SDimitry Andric#else
4689*0b57cec5SDimitry Andric    return less<>()(__x.get(), __y.get());
4690*0b57cec5SDimitry Andric#endif
4691*0b57cec5SDimitry Andric
4692*0b57cec5SDimitry Andric}
4693*0b57cec5SDimitry Andric
4694*0b57cec5SDimitry Andrictemplate<class _Tp, class _Up>
4695*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4696*0b57cec5SDimitry Andricbool
4697*0b57cec5SDimitry Andricoperator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4698*0b57cec5SDimitry Andric{
4699*0b57cec5SDimitry Andric    return __y < __x;
4700*0b57cec5SDimitry Andric}
4701*0b57cec5SDimitry Andric
4702*0b57cec5SDimitry Andrictemplate<class _Tp, class _Up>
4703*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4704*0b57cec5SDimitry Andricbool
4705*0b57cec5SDimitry Andricoperator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4706*0b57cec5SDimitry Andric{
4707*0b57cec5SDimitry Andric    return !(__y < __x);
4708*0b57cec5SDimitry Andric}
4709*0b57cec5SDimitry Andric
4710*0b57cec5SDimitry Andrictemplate<class _Tp, class _Up>
4711*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4712*0b57cec5SDimitry Andricbool
4713*0b57cec5SDimitry Andricoperator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4714*0b57cec5SDimitry Andric{
4715*0b57cec5SDimitry Andric    return !(__x < __y);
4716*0b57cec5SDimitry Andric}
4717*0b57cec5SDimitry Andric
4718*0b57cec5SDimitry Andrictemplate<class _Tp>
4719*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4720*0b57cec5SDimitry Andricbool
4721*0b57cec5SDimitry Andricoperator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4722*0b57cec5SDimitry Andric{
4723*0b57cec5SDimitry Andric    return !__x;
4724*0b57cec5SDimitry Andric}
4725*0b57cec5SDimitry Andric
4726*0b57cec5SDimitry Andrictemplate<class _Tp>
4727*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4728*0b57cec5SDimitry Andricbool
4729*0b57cec5SDimitry Andricoperator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4730*0b57cec5SDimitry Andric{
4731*0b57cec5SDimitry Andric    return !__x;
4732*0b57cec5SDimitry Andric}
4733*0b57cec5SDimitry Andric
4734*0b57cec5SDimitry Andrictemplate<class _Tp>
4735*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4736*0b57cec5SDimitry Andricbool
4737*0b57cec5SDimitry Andricoperator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4738*0b57cec5SDimitry Andric{
4739*0b57cec5SDimitry Andric    return static_cast<bool>(__x);
4740*0b57cec5SDimitry Andric}
4741*0b57cec5SDimitry Andric
4742*0b57cec5SDimitry Andrictemplate<class _Tp>
4743*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4744*0b57cec5SDimitry Andricbool
4745*0b57cec5SDimitry Andricoperator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4746*0b57cec5SDimitry Andric{
4747*0b57cec5SDimitry Andric    return static_cast<bool>(__x);
4748*0b57cec5SDimitry Andric}
4749*0b57cec5SDimitry Andric
4750*0b57cec5SDimitry Andrictemplate<class _Tp>
4751*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4752*0b57cec5SDimitry Andricbool
4753*0b57cec5SDimitry Andricoperator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4754*0b57cec5SDimitry Andric{
4755*0b57cec5SDimitry Andric    return less<_Tp*>()(__x.get(), nullptr);
4756*0b57cec5SDimitry Andric}
4757*0b57cec5SDimitry Andric
4758*0b57cec5SDimitry Andrictemplate<class _Tp>
4759*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4760*0b57cec5SDimitry Andricbool
4761*0b57cec5SDimitry Andricoperator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4762*0b57cec5SDimitry Andric{
4763*0b57cec5SDimitry Andric    return less<_Tp*>()(nullptr, __x.get());
4764*0b57cec5SDimitry Andric}
4765*0b57cec5SDimitry Andric
4766*0b57cec5SDimitry Andrictemplate<class _Tp>
4767*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4768*0b57cec5SDimitry Andricbool
4769*0b57cec5SDimitry Andricoperator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4770*0b57cec5SDimitry Andric{
4771*0b57cec5SDimitry Andric    return nullptr < __x;
4772*0b57cec5SDimitry Andric}
4773*0b57cec5SDimitry Andric
4774*0b57cec5SDimitry Andrictemplate<class _Tp>
4775*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4776*0b57cec5SDimitry Andricbool
4777*0b57cec5SDimitry Andricoperator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4778*0b57cec5SDimitry Andric{
4779*0b57cec5SDimitry Andric    return __x < nullptr;
4780*0b57cec5SDimitry Andric}
4781*0b57cec5SDimitry Andric
4782*0b57cec5SDimitry Andrictemplate<class _Tp>
4783*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4784*0b57cec5SDimitry Andricbool
4785*0b57cec5SDimitry Andricoperator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4786*0b57cec5SDimitry Andric{
4787*0b57cec5SDimitry Andric    return !(nullptr < __x);
4788*0b57cec5SDimitry Andric}
4789*0b57cec5SDimitry Andric
4790*0b57cec5SDimitry Andrictemplate<class _Tp>
4791*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4792*0b57cec5SDimitry Andricbool
4793*0b57cec5SDimitry Andricoperator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4794*0b57cec5SDimitry Andric{
4795*0b57cec5SDimitry Andric    return !(__x < nullptr);
4796*0b57cec5SDimitry Andric}
4797*0b57cec5SDimitry Andric
4798*0b57cec5SDimitry Andrictemplate<class _Tp>
4799*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4800*0b57cec5SDimitry Andricbool
4801*0b57cec5SDimitry Andricoperator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4802*0b57cec5SDimitry Andric{
4803*0b57cec5SDimitry Andric    return !(__x < nullptr);
4804*0b57cec5SDimitry Andric}
4805*0b57cec5SDimitry Andric
4806*0b57cec5SDimitry Andrictemplate<class _Tp>
4807*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4808*0b57cec5SDimitry Andricbool
4809*0b57cec5SDimitry Andricoperator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4810*0b57cec5SDimitry Andric{
4811*0b57cec5SDimitry Andric    return !(nullptr < __x);
4812*0b57cec5SDimitry Andric}
4813*0b57cec5SDimitry Andric
4814*0b57cec5SDimitry Andrictemplate<class _Tp>
4815*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4816*0b57cec5SDimitry Andricvoid
4817*0b57cec5SDimitry Andricswap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT
4818*0b57cec5SDimitry Andric{
4819*0b57cec5SDimitry Andric    __x.swap(__y);
4820*0b57cec5SDimitry Andric}
4821*0b57cec5SDimitry Andric
4822*0b57cec5SDimitry Andrictemplate<class _Tp, class _Up>
4823*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4824*0b57cec5SDimitry Andrictypename enable_if
4825*0b57cec5SDimitry Andric<
4826*0b57cec5SDimitry Andric    !is_array<_Tp>::value && !is_array<_Up>::value,
4827*0b57cec5SDimitry Andric    shared_ptr<_Tp>
4828*0b57cec5SDimitry Andric>::type
4829*0b57cec5SDimitry Andricstatic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
4830*0b57cec5SDimitry Andric{
4831*0b57cec5SDimitry Andric    return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get()));
4832*0b57cec5SDimitry Andric}
4833*0b57cec5SDimitry Andric
4834*0b57cec5SDimitry Andrictemplate<class _Tp, class _Up>
4835*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4836*0b57cec5SDimitry Andrictypename enable_if
4837*0b57cec5SDimitry Andric<
4838*0b57cec5SDimitry Andric    !is_array<_Tp>::value && !is_array<_Up>::value,
4839*0b57cec5SDimitry Andric    shared_ptr<_Tp>
4840*0b57cec5SDimitry Andric>::type
4841*0b57cec5SDimitry Andricdynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
4842*0b57cec5SDimitry Andric{
4843*0b57cec5SDimitry Andric    _Tp* __p = dynamic_cast<_Tp*>(__r.get());
4844*0b57cec5SDimitry Andric    return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>();
4845*0b57cec5SDimitry Andric}
4846*0b57cec5SDimitry Andric
4847*0b57cec5SDimitry Andrictemplate<class _Tp, class _Up>
4848*0b57cec5SDimitry Andrictypename enable_if
4849*0b57cec5SDimitry Andric<
4850*0b57cec5SDimitry Andric    is_array<_Tp>::value == is_array<_Up>::value,
4851*0b57cec5SDimitry Andric    shared_ptr<_Tp>
4852*0b57cec5SDimitry Andric>::type
4853*0b57cec5SDimitry Andricconst_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
4854*0b57cec5SDimitry Andric{
4855*0b57cec5SDimitry Andric    typedef typename remove_extent<_Tp>::type _RTp;
4856*0b57cec5SDimitry Andric    return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get()));
4857*0b57cec5SDimitry Andric}
4858*0b57cec5SDimitry Andric
4859*0b57cec5SDimitry Andric#ifndef _LIBCPP_NO_RTTI
4860*0b57cec5SDimitry Andric
4861*0b57cec5SDimitry Andrictemplate<class _Dp, class _Tp>
4862*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
4863*0b57cec5SDimitry Andric_Dp*
4864*0b57cec5SDimitry Andricget_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT
4865*0b57cec5SDimitry Andric{
4866*0b57cec5SDimitry Andric    return __p.template __get_deleter<_Dp>();
4867*0b57cec5SDimitry Andric}
4868*0b57cec5SDimitry Andric
4869*0b57cec5SDimitry Andric#endif  // _LIBCPP_NO_RTTI
4870*0b57cec5SDimitry Andric
4871*0b57cec5SDimitry Andrictemplate<class _Tp>
4872*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS weak_ptr
4873*0b57cec5SDimitry Andric{
4874*0b57cec5SDimitry Andricpublic:
4875*0b57cec5SDimitry Andric    typedef _Tp element_type;
4876*0b57cec5SDimitry Andricprivate:
4877*0b57cec5SDimitry Andric    element_type*        __ptr_;
4878*0b57cec5SDimitry Andric    __shared_weak_count* __cntrl_;
4879*0b57cec5SDimitry Andric
4880*0b57cec5SDimitry Andricpublic:
4881*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
4882*0b57cec5SDimitry Andric    _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT;
4883*0b57cec5SDimitry Andric    template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r,
4884*0b57cec5SDimitry Andric                   typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
4885*0b57cec5SDimitry Andric                        _NOEXCEPT;
4886*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
4887*0b57cec5SDimitry Andric    weak_ptr(weak_ptr const& __r) _NOEXCEPT;
4888*0b57cec5SDimitry Andric    template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r,
4889*0b57cec5SDimitry Andric                   typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
4890*0b57cec5SDimitry Andric                         _NOEXCEPT;
4891*0b57cec5SDimitry Andric
4892*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4893*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
4894*0b57cec5SDimitry Andric    weak_ptr(weak_ptr&& __r) _NOEXCEPT;
4895*0b57cec5SDimitry Andric    template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r,
4896*0b57cec5SDimitry Andric                   typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
4897*0b57cec5SDimitry Andric                         _NOEXCEPT;
4898*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4899*0b57cec5SDimitry Andric    ~weak_ptr();
4900*0b57cec5SDimitry Andric
4901*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
4902*0b57cec5SDimitry Andric    weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT;
4903*0b57cec5SDimitry Andric    template<class _Yp>
4904*0b57cec5SDimitry Andric        typename enable_if
4905*0b57cec5SDimitry Andric        <
4906*0b57cec5SDimitry Andric            is_convertible<_Yp*, element_type*>::value,
4907*0b57cec5SDimitry Andric            weak_ptr&
4908*0b57cec5SDimitry Andric        >::type
4909*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
4910*0b57cec5SDimitry Andric        operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT;
4911*0b57cec5SDimitry Andric
4912*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4913*0b57cec5SDimitry Andric
4914*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
4915*0b57cec5SDimitry Andric    weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT;
4916*0b57cec5SDimitry Andric    template<class _Yp>
4917*0b57cec5SDimitry Andric        typename enable_if
4918*0b57cec5SDimitry Andric        <
4919*0b57cec5SDimitry Andric            is_convertible<_Yp*, element_type*>::value,
4920*0b57cec5SDimitry Andric            weak_ptr&
4921*0b57cec5SDimitry Andric        >::type
4922*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
4923*0b57cec5SDimitry Andric        operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT;
4924*0b57cec5SDimitry Andric
4925*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4926*0b57cec5SDimitry Andric
4927*0b57cec5SDimitry Andric    template<class _Yp>
4928*0b57cec5SDimitry Andric        typename enable_if
4929*0b57cec5SDimitry Andric        <
4930*0b57cec5SDimitry Andric            is_convertible<_Yp*, element_type*>::value,
4931*0b57cec5SDimitry Andric            weak_ptr&
4932*0b57cec5SDimitry Andric        >::type
4933*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
4934*0b57cec5SDimitry Andric        operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT;
4935*0b57cec5SDimitry Andric
4936*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
4937*0b57cec5SDimitry Andric    void swap(weak_ptr& __r) _NOEXCEPT;
4938*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
4939*0b57cec5SDimitry Andric    void reset() _NOEXCEPT;
4940*0b57cec5SDimitry Andric
4941*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
4942*0b57cec5SDimitry Andric    long use_count() const _NOEXCEPT
4943*0b57cec5SDimitry Andric        {return __cntrl_ ? __cntrl_->use_count() : 0;}
4944*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
4945*0b57cec5SDimitry Andric    bool expired() const _NOEXCEPT
4946*0b57cec5SDimitry Andric        {return __cntrl_ == 0 || __cntrl_->use_count() == 0;}
4947*0b57cec5SDimitry Andric    shared_ptr<_Tp> lock() const _NOEXCEPT;
4948*0b57cec5SDimitry Andric    template<class _Up>
4949*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
4950*0b57cec5SDimitry Andric        bool owner_before(const shared_ptr<_Up>& __r) const _NOEXCEPT
4951*0b57cec5SDimitry Andric        {return __cntrl_ < __r.__cntrl_;}
4952*0b57cec5SDimitry Andric    template<class _Up>
4953*0b57cec5SDimitry Andric        _LIBCPP_INLINE_VISIBILITY
4954*0b57cec5SDimitry Andric        bool owner_before(const weak_ptr<_Up>& __r) const _NOEXCEPT
4955*0b57cec5SDimitry Andric        {return __cntrl_ < __r.__cntrl_;}
4956*0b57cec5SDimitry Andric
4957*0b57cec5SDimitry Andric    template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr;
4958*0b57cec5SDimitry Andric    template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr;
4959*0b57cec5SDimitry Andric};
4960*0b57cec5SDimitry Andric
4961*0b57cec5SDimitry Andrictemplate<class _Tp>
4962*0b57cec5SDimitry Andricinline
4963*0b57cec5SDimitry Andric_LIBCPP_CONSTEXPR
4964*0b57cec5SDimitry Andricweak_ptr<_Tp>::weak_ptr() _NOEXCEPT
4965*0b57cec5SDimitry Andric    : __ptr_(0),
4966*0b57cec5SDimitry Andric      __cntrl_(0)
4967*0b57cec5SDimitry Andric{
4968*0b57cec5SDimitry Andric}
4969*0b57cec5SDimitry Andric
4970*0b57cec5SDimitry Andrictemplate<class _Tp>
4971*0b57cec5SDimitry Andricinline
4972*0b57cec5SDimitry Andricweak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT
4973*0b57cec5SDimitry Andric    : __ptr_(__r.__ptr_),
4974*0b57cec5SDimitry Andric      __cntrl_(__r.__cntrl_)
4975*0b57cec5SDimitry Andric{
4976*0b57cec5SDimitry Andric    if (__cntrl_)
4977*0b57cec5SDimitry Andric        __cntrl_->__add_weak();
4978*0b57cec5SDimitry Andric}
4979*0b57cec5SDimitry Andric
4980*0b57cec5SDimitry Andrictemplate<class _Tp>
4981*0b57cec5SDimitry Andrictemplate<class _Yp>
4982*0b57cec5SDimitry Andricinline
4983*0b57cec5SDimitry Andricweak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r,
4984*0b57cec5SDimitry Andric                        typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
4985*0b57cec5SDimitry Andric                         _NOEXCEPT
4986*0b57cec5SDimitry Andric    : __ptr_(__r.__ptr_),
4987*0b57cec5SDimitry Andric      __cntrl_(__r.__cntrl_)
4988*0b57cec5SDimitry Andric{
4989*0b57cec5SDimitry Andric    if (__cntrl_)
4990*0b57cec5SDimitry Andric        __cntrl_->__add_weak();
4991*0b57cec5SDimitry Andric}
4992*0b57cec5SDimitry Andric
4993*0b57cec5SDimitry Andrictemplate<class _Tp>
4994*0b57cec5SDimitry Andrictemplate<class _Yp>
4995*0b57cec5SDimitry Andricinline
4996*0b57cec5SDimitry Andricweak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r,
4997*0b57cec5SDimitry Andric                        typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
4998*0b57cec5SDimitry Andric         _NOEXCEPT
4999*0b57cec5SDimitry Andric    : __ptr_(__r.__ptr_),
5000*0b57cec5SDimitry Andric      __cntrl_(__r.__cntrl_)
5001*0b57cec5SDimitry Andric{
5002*0b57cec5SDimitry Andric    if (__cntrl_)
5003*0b57cec5SDimitry Andric        __cntrl_->__add_weak();
5004*0b57cec5SDimitry Andric}
5005*0b57cec5SDimitry Andric
5006*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
5007*0b57cec5SDimitry Andric
5008*0b57cec5SDimitry Andrictemplate<class _Tp>
5009*0b57cec5SDimitry Andricinline
5010*0b57cec5SDimitry Andricweak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT
5011*0b57cec5SDimitry Andric    : __ptr_(__r.__ptr_),
5012*0b57cec5SDimitry Andric      __cntrl_(__r.__cntrl_)
5013*0b57cec5SDimitry Andric{
5014*0b57cec5SDimitry Andric    __r.__ptr_ = 0;
5015*0b57cec5SDimitry Andric    __r.__cntrl_ = 0;
5016*0b57cec5SDimitry Andric}
5017*0b57cec5SDimitry Andric
5018*0b57cec5SDimitry Andrictemplate<class _Tp>
5019*0b57cec5SDimitry Andrictemplate<class _Yp>
5020*0b57cec5SDimitry Andricinline
5021*0b57cec5SDimitry Andricweak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r,
5022*0b57cec5SDimitry Andric                        typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
5023*0b57cec5SDimitry Andric         _NOEXCEPT
5024*0b57cec5SDimitry Andric    : __ptr_(__r.__ptr_),
5025*0b57cec5SDimitry Andric      __cntrl_(__r.__cntrl_)
5026*0b57cec5SDimitry Andric{
5027*0b57cec5SDimitry Andric    __r.__ptr_ = 0;
5028*0b57cec5SDimitry Andric    __r.__cntrl_ = 0;
5029*0b57cec5SDimitry Andric}
5030*0b57cec5SDimitry Andric
5031*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
5032*0b57cec5SDimitry Andric
5033*0b57cec5SDimitry Andrictemplate<class _Tp>
5034*0b57cec5SDimitry Andricweak_ptr<_Tp>::~weak_ptr()
5035*0b57cec5SDimitry Andric{
5036*0b57cec5SDimitry Andric    if (__cntrl_)
5037*0b57cec5SDimitry Andric        __cntrl_->__release_weak();
5038*0b57cec5SDimitry Andric}
5039*0b57cec5SDimitry Andric
5040*0b57cec5SDimitry Andrictemplate<class _Tp>
5041*0b57cec5SDimitry Andricinline
5042*0b57cec5SDimitry Andricweak_ptr<_Tp>&
5043*0b57cec5SDimitry Andricweak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT
5044*0b57cec5SDimitry Andric{
5045*0b57cec5SDimitry Andric    weak_ptr(__r).swap(*this);
5046*0b57cec5SDimitry Andric    return *this;
5047*0b57cec5SDimitry Andric}
5048*0b57cec5SDimitry Andric
5049*0b57cec5SDimitry Andrictemplate<class _Tp>
5050*0b57cec5SDimitry Andrictemplate<class _Yp>
5051*0b57cec5SDimitry Andricinline
5052*0b57cec5SDimitry Andrictypename enable_if
5053*0b57cec5SDimitry Andric<
5054*0b57cec5SDimitry Andric    is_convertible<_Yp*, _Tp*>::value,
5055*0b57cec5SDimitry Andric    weak_ptr<_Tp>&
5056*0b57cec5SDimitry Andric>::type
5057*0b57cec5SDimitry Andricweak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT
5058*0b57cec5SDimitry Andric{
5059*0b57cec5SDimitry Andric    weak_ptr(__r).swap(*this);
5060*0b57cec5SDimitry Andric    return *this;
5061*0b57cec5SDimitry Andric}
5062*0b57cec5SDimitry Andric
5063*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
5064*0b57cec5SDimitry Andric
5065*0b57cec5SDimitry Andrictemplate<class _Tp>
5066*0b57cec5SDimitry Andricinline
5067*0b57cec5SDimitry Andricweak_ptr<_Tp>&
5068*0b57cec5SDimitry Andricweak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT
5069*0b57cec5SDimitry Andric{
5070*0b57cec5SDimitry Andric    weak_ptr(_VSTD::move(__r)).swap(*this);
5071*0b57cec5SDimitry Andric    return *this;
5072*0b57cec5SDimitry Andric}
5073*0b57cec5SDimitry Andric
5074*0b57cec5SDimitry Andrictemplate<class _Tp>
5075*0b57cec5SDimitry Andrictemplate<class _Yp>
5076*0b57cec5SDimitry Andricinline
5077*0b57cec5SDimitry Andrictypename enable_if
5078*0b57cec5SDimitry Andric<
5079*0b57cec5SDimitry Andric    is_convertible<_Yp*, _Tp*>::value,
5080*0b57cec5SDimitry Andric    weak_ptr<_Tp>&
5081*0b57cec5SDimitry Andric>::type
5082*0b57cec5SDimitry Andricweak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT
5083*0b57cec5SDimitry Andric{
5084*0b57cec5SDimitry Andric    weak_ptr(_VSTD::move(__r)).swap(*this);
5085*0b57cec5SDimitry Andric    return *this;
5086*0b57cec5SDimitry Andric}
5087*0b57cec5SDimitry Andric
5088*0b57cec5SDimitry Andric#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
5089*0b57cec5SDimitry Andric
5090*0b57cec5SDimitry Andrictemplate<class _Tp>
5091*0b57cec5SDimitry Andrictemplate<class _Yp>
5092*0b57cec5SDimitry Andricinline
5093*0b57cec5SDimitry Andrictypename enable_if
5094*0b57cec5SDimitry Andric<
5095*0b57cec5SDimitry Andric    is_convertible<_Yp*, _Tp*>::value,
5096*0b57cec5SDimitry Andric    weak_ptr<_Tp>&
5097*0b57cec5SDimitry Andric>::type
5098*0b57cec5SDimitry Andricweak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT
5099*0b57cec5SDimitry Andric{
5100*0b57cec5SDimitry Andric    weak_ptr(__r).swap(*this);
5101*0b57cec5SDimitry Andric    return *this;
5102*0b57cec5SDimitry Andric}
5103*0b57cec5SDimitry Andric
5104*0b57cec5SDimitry Andrictemplate<class _Tp>
5105*0b57cec5SDimitry Andricinline
5106*0b57cec5SDimitry Andricvoid
5107*0b57cec5SDimitry Andricweak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT
5108*0b57cec5SDimitry Andric{
5109*0b57cec5SDimitry Andric    _VSTD::swap(__ptr_, __r.__ptr_);
5110*0b57cec5SDimitry Andric    _VSTD::swap(__cntrl_, __r.__cntrl_);
5111*0b57cec5SDimitry Andric}
5112*0b57cec5SDimitry Andric
5113*0b57cec5SDimitry Andrictemplate<class _Tp>
5114*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5115*0b57cec5SDimitry Andricvoid
5116*0b57cec5SDimitry Andricswap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT
5117*0b57cec5SDimitry Andric{
5118*0b57cec5SDimitry Andric    __x.swap(__y);
5119*0b57cec5SDimitry Andric}
5120*0b57cec5SDimitry Andric
5121*0b57cec5SDimitry Andrictemplate<class _Tp>
5122*0b57cec5SDimitry Andricinline
5123*0b57cec5SDimitry Andricvoid
5124*0b57cec5SDimitry Andricweak_ptr<_Tp>::reset() _NOEXCEPT
5125*0b57cec5SDimitry Andric{
5126*0b57cec5SDimitry Andric    weak_ptr().swap(*this);
5127*0b57cec5SDimitry Andric}
5128*0b57cec5SDimitry Andric
5129*0b57cec5SDimitry Andrictemplate<class _Tp>
5130*0b57cec5SDimitry Andrictemplate<class _Yp>
5131*0b57cec5SDimitry Andricshared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r,
5132*0b57cec5SDimitry Andric                            typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
5133*0b57cec5SDimitry Andric    : __ptr_(__r.__ptr_),
5134*0b57cec5SDimitry Andric      __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_)
5135*0b57cec5SDimitry Andric{
5136*0b57cec5SDimitry Andric    if (__cntrl_ == 0)
5137*0b57cec5SDimitry Andric        __throw_bad_weak_ptr();
5138*0b57cec5SDimitry Andric}
5139*0b57cec5SDimitry Andric
5140*0b57cec5SDimitry Andrictemplate<class _Tp>
5141*0b57cec5SDimitry Andricshared_ptr<_Tp>
5142*0b57cec5SDimitry Andricweak_ptr<_Tp>::lock() const _NOEXCEPT
5143*0b57cec5SDimitry Andric{
5144*0b57cec5SDimitry Andric    shared_ptr<_Tp> __r;
5145*0b57cec5SDimitry Andric    __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_;
5146*0b57cec5SDimitry Andric    if (__r.__cntrl_)
5147*0b57cec5SDimitry Andric        __r.__ptr_ = __ptr_;
5148*0b57cec5SDimitry Andric    return __r;
5149*0b57cec5SDimitry Andric}
5150*0b57cec5SDimitry Andric
5151*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER > 14
5152*0b57cec5SDimitry Andrictemplate <class _Tp = void> struct owner_less;
5153*0b57cec5SDimitry Andric#else
5154*0b57cec5SDimitry Andrictemplate <class _Tp> struct owner_less;
5155*0b57cec5SDimitry Andric#endif
5156*0b57cec5SDimitry Andric
5157*0b57cec5SDimitry Andrictemplate <class _Tp>
5158*0b57cec5SDimitry Andricstruct _LIBCPP_TEMPLATE_VIS owner_less<shared_ptr<_Tp> >
5159*0b57cec5SDimitry Andric    : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool>
5160*0b57cec5SDimitry Andric{
5161*0b57cec5SDimitry Andric    typedef bool result_type;
5162*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5163*0b57cec5SDimitry Andric    bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
5164*0b57cec5SDimitry Andric        {return __x.owner_before(__y);}
5165*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5166*0b57cec5SDimitry Andric    bool operator()(shared_ptr<_Tp> const& __x,   weak_ptr<_Tp> const& __y) const _NOEXCEPT
5167*0b57cec5SDimitry Andric        {return __x.owner_before(__y);}
5168*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5169*0b57cec5SDimitry Andric    bool operator()(  weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
5170*0b57cec5SDimitry Andric        {return __x.owner_before(__y);}
5171*0b57cec5SDimitry Andric};
5172*0b57cec5SDimitry Andric
5173*0b57cec5SDimitry Andrictemplate <class _Tp>
5174*0b57cec5SDimitry Andricstruct _LIBCPP_TEMPLATE_VIS owner_less<weak_ptr<_Tp> >
5175*0b57cec5SDimitry Andric    : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool>
5176*0b57cec5SDimitry Andric{
5177*0b57cec5SDimitry Andric    typedef bool result_type;
5178*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5179*0b57cec5SDimitry Andric    bool operator()(  weak_ptr<_Tp> const& __x,   weak_ptr<_Tp> const& __y) const _NOEXCEPT
5180*0b57cec5SDimitry Andric        {return __x.owner_before(__y);}
5181*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5182*0b57cec5SDimitry Andric    bool operator()(shared_ptr<_Tp> const& __x,   weak_ptr<_Tp> const& __y) const _NOEXCEPT
5183*0b57cec5SDimitry Andric        {return __x.owner_before(__y);}
5184*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5185*0b57cec5SDimitry Andric    bool operator()(  weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
5186*0b57cec5SDimitry Andric        {return __x.owner_before(__y);}
5187*0b57cec5SDimitry Andric};
5188*0b57cec5SDimitry Andric
5189*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER > 14
5190*0b57cec5SDimitry Andrictemplate <>
5191*0b57cec5SDimitry Andricstruct _LIBCPP_TEMPLATE_VIS owner_less<void>
5192*0b57cec5SDimitry Andric{
5193*0b57cec5SDimitry Andric    template <class _Tp, class _Up>
5194*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5195*0b57cec5SDimitry Andric    bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT
5196*0b57cec5SDimitry Andric        {return __x.owner_before(__y);}
5197*0b57cec5SDimitry Andric    template <class _Tp, class _Up>
5198*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5199*0b57cec5SDimitry Andric    bool operator()( shared_ptr<_Tp> const& __x,   weak_ptr<_Up> const& __y) const _NOEXCEPT
5200*0b57cec5SDimitry Andric        {return __x.owner_before(__y);}
5201*0b57cec5SDimitry Andric    template <class _Tp, class _Up>
5202*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5203*0b57cec5SDimitry Andric    bool operator()(   weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT
5204*0b57cec5SDimitry Andric        {return __x.owner_before(__y);}
5205*0b57cec5SDimitry Andric    template <class _Tp, class _Up>
5206*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5207*0b57cec5SDimitry Andric    bool operator()(   weak_ptr<_Tp> const& __x,   weak_ptr<_Up> const& __y) const _NOEXCEPT
5208*0b57cec5SDimitry Andric        {return __x.owner_before(__y);}
5209*0b57cec5SDimitry Andric    typedef void is_transparent;
5210*0b57cec5SDimitry Andric};
5211*0b57cec5SDimitry Andric#endif
5212*0b57cec5SDimitry Andric
5213*0b57cec5SDimitry Andrictemplate<class _Tp>
5214*0b57cec5SDimitry Andricclass _LIBCPP_TEMPLATE_VIS enable_shared_from_this
5215*0b57cec5SDimitry Andric{
5216*0b57cec5SDimitry Andric    mutable weak_ptr<_Tp> __weak_this_;
5217*0b57cec5SDimitry Andricprotected:
5218*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
5219*0b57cec5SDimitry Andric    enable_shared_from_this() _NOEXCEPT {}
5220*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5221*0b57cec5SDimitry Andric    enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {}
5222*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5223*0b57cec5SDimitry Andric    enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT
5224*0b57cec5SDimitry Andric        {return *this;}
5225*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5226*0b57cec5SDimitry Andric    ~enable_shared_from_this() {}
5227*0b57cec5SDimitry Andricpublic:
5228*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5229*0b57cec5SDimitry Andric    shared_ptr<_Tp> shared_from_this()
5230*0b57cec5SDimitry Andric        {return shared_ptr<_Tp>(__weak_this_);}
5231*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5232*0b57cec5SDimitry Andric    shared_ptr<_Tp const> shared_from_this() const
5233*0b57cec5SDimitry Andric        {return shared_ptr<const _Tp>(__weak_this_);}
5234*0b57cec5SDimitry Andric
5235*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER > 14
5236*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5237*0b57cec5SDimitry Andric    weak_ptr<_Tp> weak_from_this() _NOEXCEPT
5238*0b57cec5SDimitry Andric       { return __weak_this_; }
5239*0b57cec5SDimitry Andric
5240*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5241*0b57cec5SDimitry Andric    weak_ptr<const _Tp> weak_from_this() const _NOEXCEPT
5242*0b57cec5SDimitry Andric        { return __weak_this_; }
5243*0b57cec5SDimitry Andric#endif // _LIBCPP_STD_VER > 14
5244*0b57cec5SDimitry Andric
5245*0b57cec5SDimitry Andric    template <class _Up> friend class shared_ptr;
5246*0b57cec5SDimitry Andric};
5247*0b57cec5SDimitry Andric
5248*0b57cec5SDimitry Andrictemplate <class _Tp>
5249*0b57cec5SDimitry Andricstruct _LIBCPP_TEMPLATE_VIS hash<shared_ptr<_Tp> >
5250*0b57cec5SDimitry Andric{
5251*0b57cec5SDimitry Andric    typedef shared_ptr<_Tp>      argument_type;
5252*0b57cec5SDimitry Andric    typedef size_t               result_type;
5253*0b57cec5SDimitry Andric
5254*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5255*0b57cec5SDimitry Andric    result_type operator()(const argument_type& __ptr) const _NOEXCEPT
5256*0b57cec5SDimitry Andric    {
5257*0b57cec5SDimitry Andric        return hash<_Tp*>()(__ptr.get());
5258*0b57cec5SDimitry Andric    }
5259*0b57cec5SDimitry Andric};
5260*0b57cec5SDimitry Andric
5261*0b57cec5SDimitry Andrictemplate<class _CharT, class _Traits, class _Yp>
5262*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5263*0b57cec5SDimitry Andricbasic_ostream<_CharT, _Traits>&
5264*0b57cec5SDimitry Andricoperator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p);
5265*0b57cec5SDimitry Andric
5266*0b57cec5SDimitry Andric
5267*0b57cec5SDimitry Andric#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
5268*0b57cec5SDimitry Andric
5269*0b57cec5SDimitry Andricclass _LIBCPP_TYPE_VIS __sp_mut
5270*0b57cec5SDimitry Andric{
5271*0b57cec5SDimitry Andric    void* __lx;
5272*0b57cec5SDimitry Andricpublic:
5273*0b57cec5SDimitry Andric    void lock() _NOEXCEPT;
5274*0b57cec5SDimitry Andric    void unlock() _NOEXCEPT;
5275*0b57cec5SDimitry Andric
5276*0b57cec5SDimitry Andricprivate:
5277*0b57cec5SDimitry Andric    _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT;
5278*0b57cec5SDimitry Andric    __sp_mut(const __sp_mut&);
5279*0b57cec5SDimitry Andric    __sp_mut& operator=(const __sp_mut&);
5280*0b57cec5SDimitry Andric
5281*0b57cec5SDimitry Andric    friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*);
5282*0b57cec5SDimitry Andric};
5283*0b57cec5SDimitry Andric
5284*0b57cec5SDimitry Andric_LIBCPP_FUNC_VIS _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5285*0b57cec5SDimitry Andric__sp_mut& __get_sp_mut(const void*);
5286*0b57cec5SDimitry Andric
5287*0b57cec5SDimitry Andrictemplate <class _Tp>
5288*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5289*0b57cec5SDimitry Andricbool
5290*0b57cec5SDimitry Andricatomic_is_lock_free(const shared_ptr<_Tp>*)
5291*0b57cec5SDimitry Andric{
5292*0b57cec5SDimitry Andric    return false;
5293*0b57cec5SDimitry Andric}
5294*0b57cec5SDimitry Andric
5295*0b57cec5SDimitry Andrictemplate <class _Tp>
5296*0b57cec5SDimitry Andric_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5297*0b57cec5SDimitry Andricshared_ptr<_Tp>
5298*0b57cec5SDimitry Andricatomic_load(const shared_ptr<_Tp>* __p)
5299*0b57cec5SDimitry Andric{
5300*0b57cec5SDimitry Andric    __sp_mut& __m = __get_sp_mut(__p);
5301*0b57cec5SDimitry Andric    __m.lock();
5302*0b57cec5SDimitry Andric    shared_ptr<_Tp> __q = *__p;
5303*0b57cec5SDimitry Andric    __m.unlock();
5304*0b57cec5SDimitry Andric    return __q;
5305*0b57cec5SDimitry Andric}
5306*0b57cec5SDimitry Andric
5307*0b57cec5SDimitry Andrictemplate <class _Tp>
5308*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5309*0b57cec5SDimitry Andric_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5310*0b57cec5SDimitry Andricshared_ptr<_Tp>
5311*0b57cec5SDimitry Andricatomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order)
5312*0b57cec5SDimitry Andric{
5313*0b57cec5SDimitry Andric    return atomic_load(__p);
5314*0b57cec5SDimitry Andric}
5315*0b57cec5SDimitry Andric
5316*0b57cec5SDimitry Andrictemplate <class _Tp>
5317*0b57cec5SDimitry Andric_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5318*0b57cec5SDimitry Andricvoid
5319*0b57cec5SDimitry Andricatomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r)
5320*0b57cec5SDimitry Andric{
5321*0b57cec5SDimitry Andric    __sp_mut& __m = __get_sp_mut(__p);
5322*0b57cec5SDimitry Andric    __m.lock();
5323*0b57cec5SDimitry Andric    __p->swap(__r);
5324*0b57cec5SDimitry Andric    __m.unlock();
5325*0b57cec5SDimitry Andric}
5326*0b57cec5SDimitry Andric
5327*0b57cec5SDimitry Andrictemplate <class _Tp>
5328*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5329*0b57cec5SDimitry Andric_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5330*0b57cec5SDimitry Andricvoid
5331*0b57cec5SDimitry Andricatomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order)
5332*0b57cec5SDimitry Andric{
5333*0b57cec5SDimitry Andric    atomic_store(__p, __r);
5334*0b57cec5SDimitry Andric}
5335*0b57cec5SDimitry Andric
5336*0b57cec5SDimitry Andrictemplate <class _Tp>
5337*0b57cec5SDimitry Andric_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5338*0b57cec5SDimitry Andricshared_ptr<_Tp>
5339*0b57cec5SDimitry Andricatomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r)
5340*0b57cec5SDimitry Andric{
5341*0b57cec5SDimitry Andric    __sp_mut& __m = __get_sp_mut(__p);
5342*0b57cec5SDimitry Andric    __m.lock();
5343*0b57cec5SDimitry Andric    __p->swap(__r);
5344*0b57cec5SDimitry Andric    __m.unlock();
5345*0b57cec5SDimitry Andric    return __r;
5346*0b57cec5SDimitry Andric}
5347*0b57cec5SDimitry Andric
5348*0b57cec5SDimitry Andrictemplate <class _Tp>
5349*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5350*0b57cec5SDimitry Andric_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5351*0b57cec5SDimitry Andricshared_ptr<_Tp>
5352*0b57cec5SDimitry Andricatomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order)
5353*0b57cec5SDimitry Andric{
5354*0b57cec5SDimitry Andric    return atomic_exchange(__p, __r);
5355*0b57cec5SDimitry Andric}
5356*0b57cec5SDimitry Andric
5357*0b57cec5SDimitry Andrictemplate <class _Tp>
5358*0b57cec5SDimitry Andric_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5359*0b57cec5SDimitry Andricbool
5360*0b57cec5SDimitry Andricatomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w)
5361*0b57cec5SDimitry Andric{
5362*0b57cec5SDimitry Andric    shared_ptr<_Tp> __temp;
5363*0b57cec5SDimitry Andric    __sp_mut& __m = __get_sp_mut(__p);
5364*0b57cec5SDimitry Andric    __m.lock();
5365*0b57cec5SDimitry Andric    if (__p->__owner_equivalent(*__v))
5366*0b57cec5SDimitry Andric    {
5367*0b57cec5SDimitry Andric        _VSTD::swap(__temp, *__p);
5368*0b57cec5SDimitry Andric        *__p = __w;
5369*0b57cec5SDimitry Andric        __m.unlock();
5370*0b57cec5SDimitry Andric        return true;
5371*0b57cec5SDimitry Andric    }
5372*0b57cec5SDimitry Andric    _VSTD::swap(__temp, *__v);
5373*0b57cec5SDimitry Andric    *__v = *__p;
5374*0b57cec5SDimitry Andric    __m.unlock();
5375*0b57cec5SDimitry Andric    return false;
5376*0b57cec5SDimitry Andric}
5377*0b57cec5SDimitry Andric
5378*0b57cec5SDimitry Andrictemplate <class _Tp>
5379*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5380*0b57cec5SDimitry Andric_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5381*0b57cec5SDimitry Andricbool
5382*0b57cec5SDimitry Andricatomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w)
5383*0b57cec5SDimitry Andric{
5384*0b57cec5SDimitry Andric    return atomic_compare_exchange_strong(__p, __v, __w);
5385*0b57cec5SDimitry Andric}
5386*0b57cec5SDimitry Andric
5387*0b57cec5SDimitry Andrictemplate <class _Tp>
5388*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5389*0b57cec5SDimitry Andric_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5390*0b57cec5SDimitry Andricbool
5391*0b57cec5SDimitry Andricatomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v,
5392*0b57cec5SDimitry Andric                                        shared_ptr<_Tp> __w, memory_order, memory_order)
5393*0b57cec5SDimitry Andric{
5394*0b57cec5SDimitry Andric    return atomic_compare_exchange_strong(__p, __v, __w);
5395*0b57cec5SDimitry Andric}
5396*0b57cec5SDimitry Andric
5397*0b57cec5SDimitry Andrictemplate <class _Tp>
5398*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5399*0b57cec5SDimitry Andric_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5400*0b57cec5SDimitry Andricbool
5401*0b57cec5SDimitry Andricatomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v,
5402*0b57cec5SDimitry Andric                                      shared_ptr<_Tp> __w, memory_order, memory_order)
5403*0b57cec5SDimitry Andric{
5404*0b57cec5SDimitry Andric    return atomic_compare_exchange_weak(__p, __v, __w);
5405*0b57cec5SDimitry Andric}
5406*0b57cec5SDimitry Andric
5407*0b57cec5SDimitry Andric#endif  // !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
5408*0b57cec5SDimitry Andric
5409*0b57cec5SDimitry Andric//enum class
5410*0b57cec5SDimitry Andric#if defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE)
5411*0b57cec5SDimitry Andric# ifndef _LIBCPP_CXX03_LANG
5412*0b57cec5SDimitry Andricenum class pointer_safety : unsigned char {
5413*0b57cec5SDimitry Andric  relaxed,
5414*0b57cec5SDimitry Andric  preferred,
5415*0b57cec5SDimitry Andric  strict
5416*0b57cec5SDimitry Andric};
5417*0b57cec5SDimitry Andric# endif
5418*0b57cec5SDimitry Andric#else
5419*0b57cec5SDimitry Andricstruct _LIBCPP_TYPE_VIS pointer_safety
5420*0b57cec5SDimitry Andric{
5421*0b57cec5SDimitry Andric    enum __lx
5422*0b57cec5SDimitry Andric    {
5423*0b57cec5SDimitry Andric        relaxed,
5424*0b57cec5SDimitry Andric        preferred,
5425*0b57cec5SDimitry Andric        strict
5426*0b57cec5SDimitry Andric    };
5427*0b57cec5SDimitry Andric
5428*0b57cec5SDimitry Andric    __lx __v_;
5429*0b57cec5SDimitry Andric
5430*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5431*0b57cec5SDimitry Andric    pointer_safety() : __v_() {}
5432*0b57cec5SDimitry Andric
5433*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5434*0b57cec5SDimitry Andric    pointer_safety(__lx __v) : __v_(__v) {}
5435*0b57cec5SDimitry Andric    _LIBCPP_INLINE_VISIBILITY
5436*0b57cec5SDimitry Andric    operator int() const {return __v_;}
5437*0b57cec5SDimitry Andric};
5438*0b57cec5SDimitry Andric#endif
5439*0b57cec5SDimitry Andric
5440*0b57cec5SDimitry Andric#if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) && \
5441*0b57cec5SDimitry Andric    defined(_LIBCPP_BUILDING_LIBRARY)
5442*0b57cec5SDimitry Andric_LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT;
5443*0b57cec5SDimitry Andric#else
5444*0b57cec5SDimitry Andric// This function is only offered in C++03 under ABI v1.
5445*0b57cec5SDimitry Andric# if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) || !defined(_LIBCPP_CXX03_LANG)
5446*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5447*0b57cec5SDimitry Andricpointer_safety get_pointer_safety() _NOEXCEPT {
5448*0b57cec5SDimitry Andric  return pointer_safety::relaxed;
5449*0b57cec5SDimitry Andric}
5450*0b57cec5SDimitry Andric# endif
5451*0b57cec5SDimitry Andric#endif
5452*0b57cec5SDimitry Andric
5453*0b57cec5SDimitry Andric
5454*0b57cec5SDimitry Andric_LIBCPP_FUNC_VIS void declare_reachable(void* __p);
5455*0b57cec5SDimitry Andric_LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n);
5456*0b57cec5SDimitry Andric_LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n);
5457*0b57cec5SDimitry Andric_LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p);
5458*0b57cec5SDimitry Andric
5459*0b57cec5SDimitry Andrictemplate <class _Tp>
5460*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5461*0b57cec5SDimitry Andric_Tp*
5462*0b57cec5SDimitry Andricundeclare_reachable(_Tp* __p)
5463*0b57cec5SDimitry Andric{
5464*0b57cec5SDimitry Andric    return static_cast<_Tp*>(__undeclare_reachable(__p));
5465*0b57cec5SDimitry Andric}
5466*0b57cec5SDimitry Andric
5467*0b57cec5SDimitry Andric_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space);
5468*0b57cec5SDimitry Andric
5469*0b57cec5SDimitry Andric// --- Helper for container swap --
5470*0b57cec5SDimitry Andrictemplate <typename _Alloc>
5471*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5472*0b57cec5SDimitry Andricvoid __swap_allocator(_Alloc & __a1, _Alloc & __a2)
5473*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER >= 14
5474*0b57cec5SDimitry Andric    _NOEXCEPT
5475*0b57cec5SDimitry Andric#else
5476*0b57cec5SDimitry Andric    _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value)
5477*0b57cec5SDimitry Andric#endif
5478*0b57cec5SDimitry Andric{
5479*0b57cec5SDimitry Andric    __swap_allocator(__a1, __a2,
5480*0b57cec5SDimitry Andric      integral_constant<bool, _VSTD::allocator_traits<_Alloc>::propagate_on_container_swap::value>());
5481*0b57cec5SDimitry Andric}
5482*0b57cec5SDimitry Andric
5483*0b57cec5SDimitry Andrictemplate <typename _Alloc>
5484*0b57cec5SDimitry Andric_LIBCPP_INLINE_VISIBILITY
5485*0b57cec5SDimitry Andricvoid __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type)
5486*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER >= 14
5487*0b57cec5SDimitry Andric    _NOEXCEPT
5488*0b57cec5SDimitry Andric#else
5489*0b57cec5SDimitry Andric    _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value)
5490*0b57cec5SDimitry Andric#endif
5491*0b57cec5SDimitry Andric{
5492*0b57cec5SDimitry Andric    using _VSTD::swap;
5493*0b57cec5SDimitry Andric    swap(__a1, __a2);
5494*0b57cec5SDimitry Andric}
5495*0b57cec5SDimitry Andric
5496*0b57cec5SDimitry Andrictemplate <typename _Alloc>
5497*0b57cec5SDimitry Andricinline _LIBCPP_INLINE_VISIBILITY
5498*0b57cec5SDimitry Andricvoid __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {}
5499*0b57cec5SDimitry Andric
5500*0b57cec5SDimitry Andrictemplate <typename _Alloc, typename _Traits=allocator_traits<_Alloc> >
5501*0b57cec5SDimitry Andricstruct __noexcept_move_assign_container : public integral_constant<bool,
5502*0b57cec5SDimitry Andric    _Traits::propagate_on_container_move_assignment::value
5503*0b57cec5SDimitry Andric#if _LIBCPP_STD_VER > 14
5504*0b57cec5SDimitry Andric        || _Traits::is_always_equal::value
5505*0b57cec5SDimitry Andric#else
5506*0b57cec5SDimitry Andric        && is_nothrow_move_assignable<_Alloc>::value
5507*0b57cec5SDimitry Andric#endif
5508*0b57cec5SDimitry Andric    > {};
5509*0b57cec5SDimitry Andric
5510*0b57cec5SDimitry Andric
5511*0b57cec5SDimitry Andric#ifndef _LIBCPP_HAS_NO_VARIADICS
5512*0b57cec5SDimitry Andrictemplate <class _Tp, class _Alloc>
5513*0b57cec5SDimitry Andricstruct __temp_value {
5514*0b57cec5SDimitry Andric    typedef allocator_traits<_Alloc> _Traits;
5515*0b57cec5SDimitry Andric
5516*0b57cec5SDimitry Andric    typename aligned_storage<sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp)>::type __v;
5517*0b57cec5SDimitry Andric    _Alloc &__a;
5518*0b57cec5SDimitry Andric
5519*0b57cec5SDimitry Andric    _Tp *__addr() { return reinterpret_cast<_Tp *>(addressof(__v)); }
5520*0b57cec5SDimitry Andric    _Tp &   get() { return *__addr(); }
5521*0b57cec5SDimitry Andric
5522*0b57cec5SDimitry Andric    template<class... _Args>
5523*0b57cec5SDimitry Andric    _LIBCPP_NO_CFI
5524*0b57cec5SDimitry Andric    __temp_value(_Alloc &__alloc, _Args&& ... __args) : __a(__alloc) {
5525*0b57cec5SDimitry Andric      _Traits::construct(__a, reinterpret_cast<_Tp*>(addressof(__v)),
5526*0b57cec5SDimitry Andric                         _VSTD::forward<_Args>(__args)...);
5527*0b57cec5SDimitry Andric    }
5528*0b57cec5SDimitry Andric
5529*0b57cec5SDimitry Andric    ~__temp_value() { _Traits::destroy(__a, __addr()); }
5530*0b57cec5SDimitry Andric    };
5531*0b57cec5SDimitry Andric#endif
5532*0b57cec5SDimitry Andric
5533*0b57cec5SDimitry Andrictemplate<typename _Alloc, typename = void, typename = void>
5534*0b57cec5SDimitry Andricstruct __is_allocator : false_type {};
5535*0b57cec5SDimitry Andric
5536*0b57cec5SDimitry Andrictemplate<typename _Alloc>
5537*0b57cec5SDimitry Andricstruct __is_allocator<_Alloc,
5538*0b57cec5SDimitry Andric       typename __void_t<typename _Alloc::value_type>::type,
5539*0b57cec5SDimitry Andric       typename __void_t<decltype(_VSTD::declval<_Alloc&>().allocate(size_t(0)))>::type
5540*0b57cec5SDimitry Andric     >
5541*0b57cec5SDimitry Andric   : true_type {};
5542*0b57cec5SDimitry Andric
5543*0b57cec5SDimitry Andric// __builtin_new_allocator -- A non-templated helper for allocating and
5544*0b57cec5SDimitry Andric// deallocating memory using __builtin_operator_new and
5545*0b57cec5SDimitry Andric// __builtin_operator_delete. It should be used in preference to
5546*0b57cec5SDimitry Andric// `std::allocator<T>` to avoid additional instantiations.
5547*0b57cec5SDimitry Andricstruct __builtin_new_allocator {
5548*0b57cec5SDimitry Andric  struct __builtin_new_deleter {
5549*0b57cec5SDimitry Andric    typedef void* pointer_type;
5550*0b57cec5SDimitry Andric
5551*0b57cec5SDimitry Andric    _LIBCPP_CONSTEXPR explicit __builtin_new_deleter(size_t __size, size_t __align)
5552*0b57cec5SDimitry Andric        : __size_(__size), __align_(__align) {}
5553*0b57cec5SDimitry Andric
5554*0b57cec5SDimitry Andric    void operator()(void* p) const _NOEXCEPT {
5555*0b57cec5SDimitry Andric        std::__libcpp_deallocate(p, __size_, __align_);
5556*0b57cec5SDimitry Andric    }
5557*0b57cec5SDimitry Andric
5558*0b57cec5SDimitry Andric   private:
5559*0b57cec5SDimitry Andric    size_t __size_;
5560*0b57cec5SDimitry Andric    size_t __align_;
5561*0b57cec5SDimitry Andric  };
5562*0b57cec5SDimitry Andric
5563*0b57cec5SDimitry Andric  typedef unique_ptr<void, __builtin_new_deleter> __holder_t;
5564*0b57cec5SDimitry Andric
5565*0b57cec5SDimitry Andric  static __holder_t __allocate_bytes(size_t __s, size_t __align) {
5566*0b57cec5SDimitry Andric      return __holder_t(std::__libcpp_allocate(__s, __align),
5567*0b57cec5SDimitry Andric                     __builtin_new_deleter(__s, __align));
5568*0b57cec5SDimitry Andric  }
5569*0b57cec5SDimitry Andric
5570*0b57cec5SDimitry Andric  static void __deallocate_bytes(void* __p, size_t __s,
5571*0b57cec5SDimitry Andric                                 size_t __align) _NOEXCEPT {
5572*0b57cec5SDimitry Andric      std::__libcpp_deallocate(__p, __s, __align);
5573*0b57cec5SDimitry Andric  }
5574*0b57cec5SDimitry Andric
5575*0b57cec5SDimitry Andric  template <class _Tp>
5576*0b57cec5SDimitry Andric  _LIBCPP_NODEBUG _LIBCPP_ALWAYS_INLINE
5577*0b57cec5SDimitry Andric  static __holder_t __allocate_type(size_t __n) {
5578*0b57cec5SDimitry Andric      return __allocate_bytes(__n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp));
5579*0b57cec5SDimitry Andric  }
5580*0b57cec5SDimitry Andric
5581*0b57cec5SDimitry Andric  template <class _Tp>
5582*0b57cec5SDimitry Andric  _LIBCPP_NODEBUG _LIBCPP_ALWAYS_INLINE
5583*0b57cec5SDimitry Andric  static void __deallocate_type(void* __p, size_t __n) _NOEXCEPT {
5584*0b57cec5SDimitry Andric      __deallocate_bytes(__p, __n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp));
5585*0b57cec5SDimitry Andric  }
5586*0b57cec5SDimitry Andric};
5587*0b57cec5SDimitry Andric
5588*0b57cec5SDimitry Andric
5589*0b57cec5SDimitry Andric_LIBCPP_END_NAMESPACE_STD
5590*0b57cec5SDimitry Andric
5591*0b57cec5SDimitry Andric_LIBCPP_POP_MACROS
5592*0b57cec5SDimitry Andric
5593*0b57cec5SDimitry Andric#endif  // _LIBCPP_MEMORY
5594