2 //===-------------------------- memory ------------------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 #ifndef _LIBCPP_MEMORY
12 #define _LIBCPP_MEMORY
20 struct allocator_arg_t { };
21 inline constexpr allocator_arg_t allocator_arg = allocator_arg_t();
23 template <class T, class Alloc> struct uses_allocator;
29 typedef <details> element_type;
30 typedef <details> difference_type;
32 template <class U> using rebind = <details>;
34 static pointer pointer_to(<details>);
38 struct pointer_traits<T*>
41 typedef T element_type;
42 typedef ptrdiff_t difference_type;
44 template <class U> using rebind = U*;
46 static pointer pointer_to(<details>) noexcept;
49 template <class T> constexpr T* to_address(T* p) noexcept; // C++20
50 template <class Ptr> auto to_address(const Ptr& p) noexcept; // C++20
52 template <class Alloc>
53 struct allocator_traits
55 typedef Alloc allocator_type;
56 typedef typename allocator_type::value_type
59 typedef Alloc::pointer | value_type* pointer;
60 typedef Alloc::const_pointer
61 | pointer_traits<pointer>::rebind<const value_type>
63 typedef Alloc::void_pointer
64 | pointer_traits<pointer>::rebind<void>
66 typedef Alloc::const_void_pointer
67 | pointer_traits<pointer>::rebind<const void>
69 typedef Alloc::difference_type
70 | pointer_traits<pointer>::difference_type
72 typedef Alloc::size_type
73 | make_unsigned<difference_type>::type
75 typedef Alloc::propagate_on_container_copy_assignment
76 | false_type propagate_on_container_copy_assignment;
77 typedef Alloc::propagate_on_container_move_assignment
78 | false_type propagate_on_container_move_assignment;
79 typedef Alloc::propagate_on_container_swap
80 | false_type propagate_on_container_swap;
81 typedef Alloc::is_always_equal
82 | is_empty is_always_equal;
84 template <class T> using rebind_alloc = Alloc::rebind<U>::other | Alloc<T, Args...>;
85 template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>;
87 static pointer allocate(allocator_type& a, size_type n); // [[nodiscard]] in C++20
88 static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint); // [[nodiscard]] in C++20
90 static void deallocate(allocator_type& a, pointer p, size_type n) noexcept;
92 template <class T, class... Args>
93 static void construct(allocator_type& a, T* p, Args&&... args);
96 static void destroy(allocator_type& a, T* p);
98 static size_type max_size(const allocator_type& a); // noexcept in C++14
100 static allocator_type
101 select_on_container_copy_construction(const allocator_type& a);
105 class allocator<void>
108 typedef void* pointer;
109 typedef const void* const_pointer;
110 typedef void value_type;
112 template <class _Up> struct rebind {typedef allocator<_Up> other;};
119 typedef size_t size_type;
120 typedef ptrdiff_t difference_type;
122 typedef const T* const_pointer;
123 typedef typename add_lvalue_reference<T>::type reference;
124 typedef typename add_lvalue_reference<const T>::type const_reference;
125 typedef T value_type;
127 template <class U> struct rebind {typedef allocator<U> other;};
129 allocator() noexcept;
130 allocator(const allocator&) noexcept;
131 template <class U> allocator(const allocator<U>&) noexcept;
133 pointer address(reference x) const noexcept;
134 const_pointer address(const_reference x) const noexcept;
135 pointer allocate(size_type, allocator<void>::const_pointer hint = 0);
136 void deallocate(pointer p, size_type n) noexcept;
137 size_type max_size() const noexcept;
138 template<class U, class... Args>
139 void construct(U* p, Args&&... args);
144 template <class T, class U>
145 bool operator==(const allocator<T>&, const allocator<U>&) noexcept;
147 template <class T, class U>
148 bool operator!=(const allocator<T>&, const allocator<U>&) noexcept;
150 template <class OutputIterator, class T>
151 class raw_storage_iterator
152 : public iterator<output_iterator_tag,
153 T, // purposefully not C++03
154 ptrdiff_t, // purposefully not C++03
155 T*, // purposefully not C++03
156 raw_storage_iterator&> // purposefully not C++03
159 explicit raw_storage_iterator(OutputIterator x);
160 raw_storage_iterator& operator*();
161 raw_storage_iterator& operator=(const T& element);
162 raw_storage_iterator& operator++();
163 raw_storage_iterator operator++(int);
166 template <class T> pair<T*,ptrdiff_t> get_temporary_buffer(ptrdiff_t n) noexcept;
167 template <class T> void return_temporary_buffer(T* p) noexcept;
169 template <class T> T* addressof(T& r) noexcept;
170 template <class T> T* addressof(const T&& r) noexcept = delete;
172 template <class InputIterator, class ForwardIterator>
174 uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result);
176 template <class InputIterator, class Size, class ForwardIterator>
178 uninitialized_copy_n(InputIterator first, Size n, ForwardIterator result);
180 template <class ForwardIterator, class T>
181 void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x);
183 template <class ForwardIterator, class Size, class T>
185 uninitialized_fill_n(ForwardIterator first, Size n, const T& x);
188 void destroy_at(T* location);
190 template <class ForwardIterator>
191 void destroy(ForwardIterator first, ForwardIterator last);
193 template <class ForwardIterator, class Size>
194 ForwardIterator destroy_n(ForwardIterator first, Size n);
196 template <class InputIterator, class ForwardIterator>
197 ForwardIterator uninitialized_move(InputIterator first, InputIterator last, ForwardIterator result);
199 template <class InputIterator, class Size, class ForwardIterator>
200 pair<InputIterator,ForwardIterator> uninitialized_move_n(InputIterator first, Size n, ForwardIterator result);
202 template <class ForwardIterator>
203 void uninitialized_value_construct(ForwardIterator first, ForwardIterator last);
205 template <class ForwardIterator, class Size>
206 ForwardIterator uninitialized_value_construct_n(ForwardIterator first, Size n);
208 template <class ForwardIterator>
209 void uninitialized_default_construct(ForwardIterator first, ForwardIterator last);
211 template <class ForwardIterator, class Size>
212 ForwardIterator uninitialized_default_construct_n(ForwardIterator first, Size n);
214 template <class Y> struct auto_ptr_ref {}; // removed in C++17
217 class auto_ptr // removed in C++17
220 typedef X element_type;
222 explicit auto_ptr(X* p =0) throw();
223 auto_ptr(auto_ptr&) throw();
224 template<class Y> auto_ptr(auto_ptr<Y>&) throw();
225 auto_ptr& operator=(auto_ptr&) throw();
226 template<class Y> auto_ptr& operator=(auto_ptr<Y>&) throw();
227 auto_ptr& operator=(auto_ptr_ref<X> r) throw();
230 typename add_lvalue_reference<X>::type operator*() const throw();
231 X* operator->() const throw();
232 X* get() const throw();
233 X* release() throw();
234 void reset(X* p =0) throw();
236 auto_ptr(auto_ptr_ref<X>) throw();
237 template<class Y> operator auto_ptr_ref<Y>() throw();
238 template<class Y> operator auto_ptr<Y>() throw();
242 struct default_delete
244 constexpr default_delete() noexcept = default;
245 template <class U> default_delete(const default_delete<U>&) noexcept;
247 void operator()(T*) const noexcept;
251 struct default_delete<T[]>
253 constexpr default_delete() noexcept = default;
254 void operator()(T*) const noexcept;
255 template <class U> void operator()(U*) const = delete;
258 template <class T, class D = default_delete<T>>
262 typedef see below pointer;
263 typedef T element_type;
264 typedef D deleter_type;
267 constexpr unique_ptr() noexcept;
268 explicit unique_ptr(pointer p) noexcept;
269 unique_ptr(pointer p, see below d1) noexcept;
270 unique_ptr(pointer p, see below d2) noexcept;
271 unique_ptr(unique_ptr&& u) noexcept;
272 unique_ptr(nullptr_t) noexcept : unique_ptr() { }
273 template <class U, class E>
274 unique_ptr(unique_ptr<U, E>&& u) noexcept;
276 unique_ptr(auto_ptr<U>&& u) noexcept; // removed in C++17
282 unique_ptr& operator=(unique_ptr&& u) noexcept;
283 template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept;
284 unique_ptr& operator=(nullptr_t) noexcept;
287 typename add_lvalue_reference<T>::type operator*() const;
288 pointer operator->() const noexcept;
289 pointer get() const noexcept;
290 deleter_type& get_deleter() noexcept;
291 const deleter_type& get_deleter() const noexcept;
292 explicit operator bool() const noexcept;
295 pointer release() noexcept;
296 void reset(pointer p = pointer()) noexcept;
297 void swap(unique_ptr& u) noexcept;
300 template <class T, class D>
301 class unique_ptr<T[], D>
304 typedef implementation-defined pointer;
305 typedef T element_type;
306 typedef D deleter_type;
309 constexpr unique_ptr() noexcept;
310 explicit unique_ptr(pointer p) noexcept;
311 unique_ptr(pointer p, see below d) noexcept;
312 unique_ptr(pointer p, see below d) noexcept;
313 unique_ptr(unique_ptr&& u) noexcept;
314 unique_ptr(nullptr_t) noexcept : unique_ptr() { }
320 unique_ptr& operator=(unique_ptr&& u) noexcept;
321 unique_ptr& operator=(nullptr_t) noexcept;
324 T& operator[](size_t i) const;
325 pointer get() const noexcept;
326 deleter_type& get_deleter() noexcept;
327 const deleter_type& get_deleter() const noexcept;
328 explicit operator bool() const noexcept;
331 pointer release() noexcept;
332 void reset(pointer p = pointer()) noexcept;
333 void reset(nullptr_t) noexcept;
334 template <class U> void reset(U) = delete;
335 void swap(unique_ptr& u) noexcept;
338 template <class T, class D>
339 void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept;
341 template <class T1, class D1, class T2, class D2>
342 bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
343 template <class T1, class D1, class T2, class D2>
344 bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
345 template <class T1, class D1, class T2, class D2>
346 bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
347 template <class T1, class D1, class T2, class D2>
348 bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
349 template <class T1, class D1, class T2, class D2>
350 bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
351 template <class T1, class D1, class T2, class D2>
352 bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
354 template <class T, class D>
355 bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept;
356 template <class T, class D>
357 bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept;
358 template <class T, class D>
359 bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept;
360 template <class T, class D>
361 bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept;
363 template <class T, class D>
364 bool operator<(const unique_ptr<T, D>& x, nullptr_t);
365 template <class T, class D>
366 bool operator<(nullptr_t, const unique_ptr<T, D>& y);
367 template <class T, class D>
368 bool operator<=(const unique_ptr<T, D>& x, nullptr_t);
369 template <class T, class D>
370 bool operator<=(nullptr_t, const unique_ptr<T, D>& y);
371 template <class T, class D>
372 bool operator>(const unique_ptr<T, D>& x, nullptr_t);
373 template <class T, class D>
374 bool operator>(nullptr_t, const unique_ptr<T, D>& y);
375 template <class T, class D>
376 bool operator>=(const unique_ptr<T, D>& x, nullptr_t);
377 template <class T, class D>
378 bool operator>=(nullptr_t, const unique_ptr<T, D>& y);
381 : public std::exception
383 bad_weak_ptr() noexcept;
386 template<class T, class... Args> unique_ptr<T> make_unique(Args&&... args); // C++14
387 template<class T> unique_ptr<T> make_unique(size_t n); // C++14
388 template<class T, class... Args> unspecified make_unique(Args&&...) = delete; // C++14, T == U[N]
390 template<class E, class T, class Y, class D>
391 basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, unique_ptr<Y, D> const& p);
397 typedef T element_type;
398 typedef weak_ptr<T> weak_type; // C++17
401 constexpr shared_ptr() noexcept;
402 template<class Y> explicit shared_ptr(Y* p);
403 template<class Y, class D> shared_ptr(Y* p, D d);
404 template<class Y, class D, class A> shared_ptr(Y* p, D d, A a);
405 template <class D> shared_ptr(nullptr_t p, D d);
406 template <class D, class A> shared_ptr(nullptr_t p, D d, A a);
407 template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p) noexcept;
408 shared_ptr(const shared_ptr& r) noexcept;
409 template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept;
410 shared_ptr(shared_ptr&& r) noexcept;
411 template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept;
412 template<class Y> explicit shared_ptr(const weak_ptr<Y>& r);
413 template<class Y> shared_ptr(auto_ptr<Y>&& r); // removed in C++17
414 template <class Y, class D> shared_ptr(unique_ptr<Y, D>&& r);
415 shared_ptr(nullptr_t) : shared_ptr() { }
421 shared_ptr& operator=(const shared_ptr& r) noexcept;
422 template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept;
423 shared_ptr& operator=(shared_ptr&& r) noexcept;
424 template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r);
425 template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); // removed in C++17
426 template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r);
429 void swap(shared_ptr& r) noexcept;
430 void reset() noexcept;
431 template<class Y> void reset(Y* p);
432 template<class Y, class D> void reset(Y* p, D d);
433 template<class Y, class D, class A> void reset(Y* p, D d, A a);
436 T* get() const noexcept;
437 T& operator*() const noexcept;
438 T* operator->() const noexcept;
439 long use_count() const noexcept;
440 bool unique() const noexcept;
441 explicit operator bool() const noexcept;
442 template<class U> bool owner_before(shared_ptr<U> const& b) const noexcept;
443 template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept;
446 // shared_ptr comparisons:
447 template<class T, class U>
448 bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
449 template<class T, class U>
450 bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
451 template<class T, class U>
452 bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
453 template<class T, class U>
454 bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
455 template<class T, class U>
456 bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
457 template<class T, class U>
458 bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
461 bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept;
463 bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept;
465 bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept;
467 bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept;
469 bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept;
471 bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept;
473 bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept;
475 bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept;
477 bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept;
479 bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept;
481 bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept;
483 bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept;
485 // shared_ptr specialized algorithms:
486 template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept;
489 template<class T, class U>
490 shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept;
491 template<class T, class U>
492 shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept;
493 template<class T, class U>
494 shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept;
497 template<class E, class T, class Y>
498 basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, shared_ptr<Y> const& p);
500 // shared_ptr get_deleter:
501 template<class D, class T> D* get_deleter(shared_ptr<T> const& p) noexcept;
503 template<class T, class... Args>
504 shared_ptr<T> make_shared(Args&&... args);
505 template<class T, class A, class... Args>
506 shared_ptr<T> allocate_shared(const A& a, Args&&... args);
512 typedef T element_type;
515 constexpr weak_ptr() noexcept;
516 template<class Y> weak_ptr(shared_ptr<Y> const& r) noexcept;
517 weak_ptr(weak_ptr const& r) noexcept;
518 template<class Y> weak_ptr(weak_ptr<Y> const& r) noexcept;
519 weak_ptr(weak_ptr&& r) noexcept; // C++14
520 template<class Y> weak_ptr(weak_ptr<Y>&& r) noexcept; // C++14
526 weak_ptr& operator=(weak_ptr const& r) noexcept;
527 template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r) noexcept;
528 template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r) noexcept;
529 weak_ptr& operator=(weak_ptr&& r) noexcept; // C++14
530 template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r) noexcept; // C++14
533 void swap(weak_ptr& r) noexcept;
534 void reset() noexcept;
537 long use_count() const noexcept;
538 bool expired() const noexcept;
539 shared_ptr<T> lock() const noexcept;
540 template<class U> bool owner_before(shared_ptr<U> const& b) const noexcept;
541 template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept;
544 // weak_ptr specialized algorithms:
545 template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept;
548 template<class T> struct owner_less;
551 struct owner_less<shared_ptr<T>>
552 : binary_function<shared_ptr<T>, shared_ptr<T>, bool>
554 typedef bool result_type;
555 bool operator()(shared_ptr<T> const&, shared_ptr<T> const&) const noexcept;
556 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept;
557 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept;
561 struct owner_less<weak_ptr<T>>
562 : binary_function<weak_ptr<T>, weak_ptr<T>, bool>
564 typedef bool result_type;
565 bool operator()(weak_ptr<T> const&, weak_ptr<T> const&) const noexcept;
566 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept;
567 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept;
570 template <> // Added in C++14
571 struct owner_less<void>
573 template <class _Tp, class _Up>
574 bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept;
575 template <class _Tp, class _Up>
576 bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const noexcept;
577 template <class _Tp, class _Up>
578 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept;
579 template <class _Tp, class _Up>
580 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const noexcept;
582 typedef void is_transparent;
586 class enable_shared_from_this
589 constexpr enable_shared_from_this() noexcept;
590 enable_shared_from_this(enable_shared_from_this const&) noexcept;
591 enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept;
592 ~enable_shared_from_this();
594 shared_ptr<T> shared_from_this();
595 shared_ptr<T const> shared_from_this() const;
599 bool atomic_is_lock_free(const shared_ptr<T>* p);
601 shared_ptr<T> atomic_load(const shared_ptr<T>* p);
603 shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo);
605 void atomic_store(shared_ptr<T>* p, shared_ptr<T> r);
607 void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo);
609 shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r);
612 atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo);
615 atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w);
618 atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w);
621 atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v,
622 shared_ptr<T> w, memory_order success,
623 memory_order failure);
626 atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v,
627 shared_ptr<T> w, memory_order success,
628 memory_order failure);
630 template <class T> struct hash;
631 template <class T, class D> struct hash<unique_ptr<T, D> >;
632 template <class T> struct hash<shared_ptr<T> >;
634 template <class T, class Alloc>
635 inline constexpr bool uses_allocator_v = uses_allocator<T, Alloc>::value;
638 enum class pointer_safety { relaxed, preferred, strict };
639 void declare_reachable(void *p);
640 template <class T> T *undeclare_reachable(T *p);
641 void declare_no_pointers(char *p, size_t n);
642 void undeclare_no_pointers(char *p, size_t n);
643 pointer_safety get_pointer_safety() noexcept;
645 void* align(size_t alignment, size_t size, void*& ptr, size_t& space);
652 #include <type_traits>
660 #include <__functional_base>
666 #if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
670 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
671 #pragma GCC system_header
675 #include <__undef_macros>
678 _LIBCPP_BEGIN_NAMESPACE_STD
680 template <class _ValueType>
681 inline _LIBCPP_ALWAYS_INLINE
682 _ValueType __libcpp_relaxed_load(_ValueType const* __value) {
683 #if !defined(_LIBCPP_HAS_NO_THREADS) && \
684 defined(__ATOMIC_RELAXED) && \
685 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407)
686 return __atomic_load_n(__value, __ATOMIC_RELAXED);
692 template <class _ValueType>
693 inline _LIBCPP_ALWAYS_INLINE
694 _ValueType __libcpp_acquire_load(_ValueType const* __value) {
695 #if !defined(_LIBCPP_HAS_NO_THREADS) && \
696 defined(__ATOMIC_ACQUIRE) && \
697 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407)
698 return __atomic_load_n(__value, __ATOMIC_ACQUIRE);
704 // addressof moved to <type_traits>
706 template <class _Tp> class allocator;
709 class _LIBCPP_TEMPLATE_VIS allocator<void>
712 typedef void* pointer;
713 typedef const void* const_pointer;
714 typedef void value_type;
716 template <class _Up> struct rebind {typedef allocator<_Up> other;};
720 class _LIBCPP_TEMPLATE_VIS allocator<const void>
723 typedef const void* pointer;
724 typedef const void* const_pointer;
725 typedef const void value_type;
727 template <class _Up> struct rebind {typedef allocator<_Up> other;};
732 template <class _Tp, class = void>
733 struct __has_element_type : false_type {};
736 struct __has_element_type<_Tp,
737 typename __void_t<typename _Tp::element_type>::type> : true_type {};
739 template <class _Ptr, bool = __has_element_type<_Ptr>::value>
740 struct __pointer_traits_element_type;
742 template <class _Ptr>
743 struct __pointer_traits_element_type<_Ptr, true>
745 typedef typename _Ptr::element_type type;
748 #ifndef _LIBCPP_HAS_NO_VARIADICS
750 template <template <class, class...> class _Sp, class _Tp, class ..._Args>
751 struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true>
753 typedef typename _Sp<_Tp, _Args...>::element_type type;
756 template <template <class, class...> class _Sp, class _Tp, class ..._Args>
757 struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false>
762 #else // _LIBCPP_HAS_NO_VARIADICS
764 template <template <class> class _Sp, class _Tp>
765 struct __pointer_traits_element_type<_Sp<_Tp>, true>
767 typedef typename _Sp<_Tp>::element_type type;
770 template <template <class> class _Sp, class _Tp>
771 struct __pointer_traits_element_type<_Sp<_Tp>, false>
776 template <template <class, class> class _Sp, class _Tp, class _A0>
777 struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true>
779 typedef typename _Sp<_Tp, _A0>::element_type type;
782 template <template <class, class> class _Sp, class _Tp, class _A0>
783 struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false>
788 template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1>
789 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true>
791 typedef typename _Sp<_Tp, _A0, _A1>::element_type type;
794 template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1>
795 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false>
800 template <template <class, class, class, class> class _Sp, class _Tp, class _A0,
801 class _A1, class _A2>
802 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true>
804 typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type;
807 template <template <class, class, class, class> class _Sp, class _Tp, class _A0,
808 class _A1, class _A2>
809 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false>
814 #endif // _LIBCPP_HAS_NO_VARIADICS
816 template <class _Tp, class = void>
817 struct __has_difference_type : false_type {};
820 struct __has_difference_type<_Tp,
821 typename __void_t<typename _Tp::difference_type>::type> : true_type {};
823 template <class _Ptr, bool = __has_difference_type<_Ptr>::value>
824 struct __pointer_traits_difference_type
826 typedef ptrdiff_t type;
829 template <class _Ptr>
830 struct __pointer_traits_difference_type<_Ptr, true>
832 typedef typename _Ptr::difference_type type;
835 template <class _Tp, class _Up>
839 struct __two {char __lx; char __lxx;};
840 template <class _Xp> static __two __test(...);
841 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0);
843 static const bool value = sizeof(__test<_Tp>(0)) == 1;
846 template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value>
847 struct __pointer_traits_rebind
849 #ifndef _LIBCPP_CXX03_LANG
850 typedef typename _Tp::template rebind<_Up> type;
852 typedef typename _Tp::template rebind<_Up>::other type;
856 #ifndef _LIBCPP_HAS_NO_VARIADICS
858 template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up>
859 struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true>
861 #ifndef _LIBCPP_CXX03_LANG
862 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type;
864 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type;
868 template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up>
869 struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false>
871 typedef _Sp<_Up, _Args...> type;
874 #else // _LIBCPP_HAS_NO_VARIADICS
876 template <template <class> class _Sp, class _Tp, class _Up>
877 struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true>
879 #ifndef _LIBCPP_CXX03_LANG
880 typedef typename _Sp<_Tp>::template rebind<_Up> type;
882 typedef typename _Sp<_Tp>::template rebind<_Up>::other type;
886 template <template <class> class _Sp, class _Tp, class _Up>
887 struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false>
889 typedef _Sp<_Up> type;
892 template <template <class, class> class _Sp, class _Tp, class _A0, class _Up>
893 struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true>
895 #ifndef _LIBCPP_CXX03_LANG
896 typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type;
898 typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type;
902 template <template <class, class> class _Sp, class _Tp, class _A0, class _Up>
903 struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false>
905 typedef _Sp<_Up, _A0> type;
908 template <template <class, class, class> class _Sp, class _Tp, class _A0,
909 class _A1, class _Up>
910 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true>
912 #ifndef _LIBCPP_CXX03_LANG
913 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type;
915 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type;
919 template <template <class, class, class> class _Sp, class _Tp, class _A0,
920 class _A1, class _Up>
921 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false>
923 typedef _Sp<_Up, _A0, _A1> type;
926 template <template <class, class, class, class> class _Sp, class _Tp, class _A0,
927 class _A1, class _A2, class _Up>
928 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true>
930 #ifndef _LIBCPP_CXX03_LANG
931 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type;
933 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type;
937 template <template <class, class, class, class> class _Sp, class _Tp, class _A0,
938 class _A1, class _A2, class _Up>
939 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false>
941 typedef _Sp<_Up, _A0, _A1, _A2> type;
944 #endif // _LIBCPP_HAS_NO_VARIADICS
946 template <class _Ptr>
947 struct _LIBCPP_TEMPLATE_VIS pointer_traits
949 typedef _Ptr pointer;
950 typedef typename __pointer_traits_element_type<pointer>::type element_type;
951 typedef typename __pointer_traits_difference_type<pointer>::type difference_type;
953 #ifndef _LIBCPP_CXX03_LANG
954 template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type;
956 template <class _Up> struct rebind
957 {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;};
958 #endif // _LIBCPP_CXX03_LANG
963 _LIBCPP_INLINE_VISIBILITY
964 static pointer pointer_to(typename conditional<is_void<element_type>::value,
965 __nat, element_type>::type& __r)
966 {return pointer::pointer_to(__r);}
970 struct _LIBCPP_TEMPLATE_VIS pointer_traits<_Tp*>
972 typedef _Tp* pointer;
973 typedef _Tp element_type;
974 typedef ptrdiff_t difference_type;
976 #ifndef _LIBCPP_CXX03_LANG
977 template <class _Up> using rebind = _Up*;
979 template <class _Up> struct rebind {typedef _Up* other;};
985 _LIBCPP_INLINE_VISIBILITY
986 static pointer pointer_to(typename conditional<is_void<element_type>::value,
987 __nat, element_type>::type& __r) _NOEXCEPT
988 {return _VSTD::addressof(__r);}
991 template <class _From, class _To>
992 struct __rebind_pointer {
993 #ifndef _LIBCPP_CXX03_LANG
994 typedef typename pointer_traits<_From>::template rebind<_To> type;
996 typedef typename pointer_traits<_From>::template rebind<_To>::other type;
1002 template <class _Tp, class = void>
1003 struct __has_pointer_type : false_type {};
1005 template <class _Tp>
1006 struct __has_pointer_type<_Tp,
1007 typename __void_t<typename _Tp::pointer>::type> : true_type {};
1009 namespace __pointer_type_imp
1012 template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value>
1013 struct __pointer_type
1015 typedef typename _Dp::pointer type;
1018 template <class _Tp, class _Dp>
1019 struct __pointer_type<_Tp, _Dp, false>
1024 } // __pointer_type_imp
1026 template <class _Tp, class _Dp>
1027 struct __pointer_type
1029 typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type;
1032 template <class _Tp, class = void>
1033 struct __has_const_pointer : false_type {};
1035 template <class _Tp>
1036 struct __has_const_pointer<_Tp,
1037 typename __void_t<typename _Tp::const_pointer>::type> : true_type {};
1039 template <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value>
1040 struct __const_pointer
1042 typedef typename _Alloc::const_pointer type;
1045 template <class _Tp, class _Ptr, class _Alloc>
1046 struct __const_pointer<_Tp, _Ptr, _Alloc, false>
1048 #ifndef _LIBCPP_CXX03_LANG
1049 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp> type;
1051 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type;
1055 template <class _Tp, class = void>
1056 struct __has_void_pointer : false_type {};
1058 template <class _Tp>
1059 struct __has_void_pointer<_Tp,
1060 typename __void_t<typename _Tp::void_pointer>::type> : true_type {};
1062 template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value>
1063 struct __void_pointer
1065 typedef typename _Alloc::void_pointer type;
1068 template <class _Ptr, class _Alloc>
1069 struct __void_pointer<_Ptr, _Alloc, false>
1071 #ifndef _LIBCPP_CXX03_LANG
1072 typedef typename pointer_traits<_Ptr>::template rebind<void> type;
1074 typedef typename pointer_traits<_Ptr>::template rebind<void>::other type;
1078 template <class _Tp, class = void>
1079 struct __has_const_void_pointer : false_type {};
1081 template <class _Tp>
1082 struct __has_const_void_pointer<_Tp,
1083 typename __void_t<typename _Tp::const_void_pointer>::type> : true_type {};
1085 template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value>
1086 struct __const_void_pointer
1088 typedef typename _Alloc::const_void_pointer type;
1091 template <class _Ptr, class _Alloc>
1092 struct __const_void_pointer<_Ptr, _Alloc, false>
1094 #ifndef _LIBCPP_CXX03_LANG
1095 typedef typename pointer_traits<_Ptr>::template rebind<const void> type;
1097 typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type;
1101 template <class _Tp>
1102 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1104 __to_raw_pointer(_Tp* __p) _NOEXCEPT
1109 #if _LIBCPP_STD_VER <= 17
1110 template <class _Pointer>
1111 inline _LIBCPP_INLINE_VISIBILITY
1112 typename pointer_traits<_Pointer>::element_type*
1113 __to_raw_pointer(_Pointer __p) _NOEXCEPT
1115 return _VSTD::__to_raw_pointer(__p.operator->());
1118 template <class _Pointer>
1119 inline _LIBCPP_INLINE_VISIBILITY
1121 __to_raw_pointer(const _Pointer& __p) _NOEXCEPT
1122 -> decltype(pointer_traits<_Pointer>::to_address(__p))
1124 return pointer_traits<_Pointer>::to_address(__p);
1127 template <class _Pointer, class... _None>
1128 inline _LIBCPP_INLINE_VISIBILITY
1130 __to_raw_pointer(const _Pointer& __p, _None...) _NOEXCEPT
1132 return _VSTD::__to_raw_pointer(__p.operator->());
1135 template <class _Tp>
1136 inline _LIBCPP_INLINE_VISIBILITY constexpr
1138 to_address(_Tp* __p) _NOEXCEPT
1140 static_assert(!is_function_v<_Tp>, "_Tp is a function type");
1144 template <class _Pointer>
1145 inline _LIBCPP_INLINE_VISIBILITY
1147 to_address(const _Pointer& __p) _NOEXCEPT
1149 return _VSTD::__to_raw_pointer(__p);
1153 template <class _Tp, class = void>
1154 struct __has_size_type : false_type {};
1156 template <class _Tp>
1157 struct __has_size_type<_Tp,
1158 typename __void_t<typename _Tp::size_type>::type> : true_type {};
1160 template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value>
1163 typedef typename make_unsigned<_DiffType>::type type;
1166 template <class _Alloc, class _DiffType>
1167 struct __size_type<_Alloc, _DiffType, true>
1169 typedef typename _Alloc::size_type type;
1172 template <class _Tp, class = void>
1173 struct __has_propagate_on_container_copy_assignment : false_type {};
1175 template <class _Tp>
1176 struct __has_propagate_on_container_copy_assignment<_Tp,
1177 typename __void_t<typename _Tp::propagate_on_container_copy_assignment>::type>
1180 template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value>
1181 struct __propagate_on_container_copy_assignment
1183 typedef false_type type;
1186 template <class _Alloc>
1187 struct __propagate_on_container_copy_assignment<_Alloc, true>
1189 typedef typename _Alloc::propagate_on_container_copy_assignment type;
1192 template <class _Tp, class = void>
1193 struct __has_propagate_on_container_move_assignment : false_type {};
1195 template <class _Tp>
1196 struct __has_propagate_on_container_move_assignment<_Tp,
1197 typename __void_t<typename _Tp::propagate_on_container_move_assignment>::type>
1200 template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value>
1201 struct __propagate_on_container_move_assignment
1203 typedef false_type type;
1206 template <class _Alloc>
1207 struct __propagate_on_container_move_assignment<_Alloc, true>
1209 typedef typename _Alloc::propagate_on_container_move_assignment type;
1212 template <class _Tp, class = void>
1213 struct __has_propagate_on_container_swap : false_type {};
1215 template <class _Tp>
1216 struct __has_propagate_on_container_swap<_Tp,
1217 typename __void_t<typename _Tp::propagate_on_container_swap>::type>
1220 template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value>
1221 struct __propagate_on_container_swap
1223 typedef false_type type;
1226 template <class _Alloc>
1227 struct __propagate_on_container_swap<_Alloc, true>
1229 typedef typename _Alloc::propagate_on_container_swap type;
1232 template <class _Tp, class = void>
1233 struct __has_is_always_equal : false_type {};
1235 template <class _Tp>
1236 struct __has_is_always_equal<_Tp,
1237 typename __void_t<typename _Tp::is_always_equal>::type>
1240 template <class _Alloc, bool = __has_is_always_equal<_Alloc>::value>
1241 struct __is_always_equal
1243 typedef typename _VSTD::is_empty<_Alloc>::type type;
1246 template <class _Alloc>
1247 struct __is_always_equal<_Alloc, true>
1249 typedef typename _Alloc::is_always_equal type;
1252 template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value>
1253 struct __has_rebind_other
1256 struct __two {char __lx; char __lxx;};
1257 template <class _Xp> static __two __test(...);
1258 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0);
1260 static const bool value = sizeof(__test<_Tp>(0)) == 1;
1263 template <class _Tp, class _Up>
1264 struct __has_rebind_other<_Tp, _Up, false>
1266 static const bool value = false;
1269 template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value>
1270 struct __allocator_traits_rebind
1272 typedef typename _Tp::template rebind<_Up>::other type;
1275 #ifndef _LIBCPP_HAS_NO_VARIADICS
1277 template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up>
1278 struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true>
1280 typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type;
1283 template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up>
1284 struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false>
1286 typedef _Alloc<_Up, _Args...> type;
1289 #else // _LIBCPP_HAS_NO_VARIADICS
1291 template <template <class> class _Alloc, class _Tp, class _Up>
1292 struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true>
1294 typedef typename _Alloc<_Tp>::template rebind<_Up>::other type;
1297 template <template <class> class _Alloc, class _Tp, class _Up>
1298 struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false>
1300 typedef _Alloc<_Up> type;
1303 template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up>
1304 struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true>
1306 typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type;
1309 template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up>
1310 struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false>
1312 typedef _Alloc<_Up, _A0> type;
1315 template <template <class, class, class> class _Alloc, class _Tp, class _A0,
1316 class _A1, class _Up>
1317 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true>
1319 typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type;
1322 template <template <class, class, class> class _Alloc, class _Tp, class _A0,
1323 class _A1, class _Up>
1324 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false>
1326 typedef _Alloc<_Up, _A0, _A1> type;
1329 template <template <class, class, class, class> class _Alloc, class _Tp, class _A0,
1330 class _A1, class _A2, class _Up>
1331 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true>
1333 typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type;
1336 template <template <class, class, class, class> class _Alloc, class _Tp, class _A0,
1337 class _A1, class _A2, class _Up>
1338 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false>
1340 typedef _Alloc<_Up, _A0, _A1, _A2> type;
1343 #endif // _LIBCPP_HAS_NO_VARIADICS
1345 #ifndef _LIBCPP_CXX03_LANG
1347 template <class _Alloc, class _SizeType, class _ConstVoidPtr>
1349 __has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p)
1350 -> decltype((void)__a.allocate(__sz, __p), true_type());
1352 template <class _Alloc, class _SizeType, class _ConstVoidPtr>
1354 __has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p)
1357 template <class _Alloc, class _SizeType, class _ConstVoidPtr>
1358 struct __has_allocate_hint
1359 : integral_constant<bool,
1361 decltype(_VSTD::__has_allocate_hint_test(declval<_Alloc>(),
1362 declval<_SizeType>(),
1363 declval<_ConstVoidPtr>())),
1368 #else // _LIBCPP_CXX03_LANG
1370 template <class _Alloc, class _SizeType, class _ConstVoidPtr>
1371 struct __has_allocate_hint
1376 #endif // _LIBCPP_CXX03_LANG
1378 #if !defined(_LIBCPP_CXX03_LANG)
1380 template <class _Alloc, class _Tp, class ..._Args>
1381 decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(),
1382 _VSTD::declval<_Args>()...),
1384 __has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args);
1386 template <class _Alloc, class _Pointer, class ..._Args>
1388 __has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args);
1390 template <class _Alloc, class _Pointer, class ..._Args>
1391 struct __has_construct
1392 : integral_constant<bool,
1394 decltype(_VSTD::__has_construct_test(declval<_Alloc>(),
1395 declval<_Pointer>(),
1396 declval<_Args>()...)),
1401 template <class _Alloc, class _Pointer>
1403 __has_destroy_test(_Alloc&& __a, _Pointer&& __p)
1404 -> decltype(__a.destroy(__p), true_type());
1406 template <class _Alloc, class _Pointer>
1408 __has_destroy_test(const _Alloc& __a, _Pointer&& __p)
1411 template <class _Alloc, class _Pointer>
1412 struct __has_destroy
1413 : integral_constant<bool,
1415 decltype(_VSTD::__has_destroy_test(declval<_Alloc>(),
1416 declval<_Pointer>())),
1421 template <class _Alloc>
1423 __has_max_size_test(_Alloc&& __a)
1424 -> decltype(__a.max_size(), true_type());
1426 template <class _Alloc>
1428 __has_max_size_test(const volatile _Alloc& __a)
1431 template <class _Alloc>
1432 struct __has_max_size
1433 : integral_constant<bool,
1435 decltype(_VSTD::__has_max_size_test(declval<_Alloc&>())),
1440 template <class _Alloc>
1442 __has_select_on_container_copy_construction_test(_Alloc&& __a)
1443 -> decltype(__a.select_on_container_copy_construction(), true_type());
1445 template <class _Alloc>
1447 __has_select_on_container_copy_construction_test(const volatile _Alloc& __a)
1450 template <class _Alloc>
1451 struct __has_select_on_container_copy_construction
1452 : integral_constant<bool,
1454 decltype(_VSTD::__has_select_on_container_copy_construction_test(declval<_Alloc&>())),
1459 #else // _LIBCPP_CXX03_LANG
1461 #ifndef _LIBCPP_HAS_NO_VARIADICS
1463 template <class _Alloc, class _Pointer, class ..._Args>
1464 struct __has_construct
1469 #else // _LIBCPP_HAS_NO_VARIADICS
1471 template <class _Alloc, class _Pointer, class _Args>
1472 struct __has_construct
1477 #endif // _LIBCPP_HAS_NO_VARIADICS
1479 template <class _Alloc, class _Pointer>
1480 struct __has_destroy
1485 template <class _Alloc>
1486 struct __has_max_size
1491 template <class _Alloc>
1492 struct __has_select_on_container_copy_construction
1497 #endif // _LIBCPP_CXX03_LANG
1499 template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value>
1500 struct __alloc_traits_difference_type
1502 typedef typename pointer_traits<_Ptr>::difference_type type;
1505 template <class _Alloc, class _Ptr>
1506 struct __alloc_traits_difference_type<_Alloc, _Ptr, true>
1508 typedef typename _Alloc::difference_type type;
1511 template <class _Alloc>
1512 struct _LIBCPP_TEMPLATE_VIS allocator_traits
1514 typedef _Alloc allocator_type;
1515 typedef typename allocator_type::value_type value_type;
1517 typedef typename __pointer_type<value_type, allocator_type>::type pointer;
1518 typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer;
1519 typedef typename __void_pointer<pointer, allocator_type>::type void_pointer;
1520 typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer;
1522 typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type;
1523 typedef typename __size_type<allocator_type, difference_type>::type size_type;
1525 typedef typename __propagate_on_container_copy_assignment<allocator_type>::type
1526 propagate_on_container_copy_assignment;
1527 typedef typename __propagate_on_container_move_assignment<allocator_type>::type
1528 propagate_on_container_move_assignment;
1529 typedef typename __propagate_on_container_swap<allocator_type>::type
1530 propagate_on_container_swap;
1531 typedef typename __is_always_equal<allocator_type>::type
1534 #ifndef _LIBCPP_CXX03_LANG
1535 template <class _Tp> using rebind_alloc =
1536 typename __allocator_traits_rebind<allocator_type, _Tp>::type;
1537 template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>;
1538 #else // _LIBCPP_CXX03_LANG
1539 template <class _Tp> struct rebind_alloc
1540 {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;};
1541 template <class _Tp> struct rebind_traits
1542 {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;};
1543 #endif // _LIBCPP_CXX03_LANG
1545 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
1546 static pointer allocate(allocator_type& __a, size_type __n)
1547 {return __a.allocate(__n);}
1548 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
1549 static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint)
1550 {return __allocate(__a, __n, __hint,
1551 __has_allocate_hint<allocator_type, size_type, const_void_pointer>());}
1553 _LIBCPP_INLINE_VISIBILITY
1554 static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT
1555 {__a.deallocate(__p, __n);}
1557 #ifndef _LIBCPP_HAS_NO_VARIADICS
1558 template <class _Tp, class... _Args>
1559 _LIBCPP_INLINE_VISIBILITY
1560 static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args)
1561 {__construct(__has_construct<allocator_type, _Tp*, _Args...>(),
1562 __a, __p, _VSTD::forward<_Args>(__args)...);}
1563 #else // _LIBCPP_HAS_NO_VARIADICS
1564 template <class _Tp>
1565 _LIBCPP_INLINE_VISIBILITY
1566 static void construct(allocator_type&, _Tp* __p)
1568 ::new ((void*)__p) _Tp();
1570 template <class _Tp, class _A0>
1571 _LIBCPP_INLINE_VISIBILITY
1572 static void construct(allocator_type&, _Tp* __p, const _A0& __a0)
1574 ::new ((void*)__p) _Tp(__a0);
1576 template <class _Tp, class _A0, class _A1>
1577 _LIBCPP_INLINE_VISIBILITY
1578 static void construct(allocator_type&, _Tp* __p, const _A0& __a0,
1581 ::new ((void*)__p) _Tp(__a0, __a1);
1583 template <class _Tp, class _A0, class _A1, class _A2>
1584 _LIBCPP_INLINE_VISIBILITY
1585 static void construct(allocator_type&, _Tp* __p, const _A0& __a0,
1586 const _A1& __a1, const _A2& __a2)
1588 ::new ((void*)__p) _Tp(__a0, __a1, __a2);
1590 #endif // _LIBCPP_HAS_NO_VARIADICS
1592 template <class _Tp>
1593 _LIBCPP_INLINE_VISIBILITY
1594 static void destroy(allocator_type& __a, _Tp* __p)
1595 {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);}
1597 _LIBCPP_INLINE_VISIBILITY
1598 static size_type max_size(const allocator_type& __a) _NOEXCEPT
1599 {return __max_size(__has_max_size<const allocator_type>(), __a);}
1601 _LIBCPP_INLINE_VISIBILITY
1602 static allocator_type
1603 select_on_container_copy_construction(const allocator_type& __a)
1604 {return __select_on_container_copy_construction(
1605 __has_select_on_container_copy_construction<const allocator_type>(),
1608 template <class _Ptr>
1609 _LIBCPP_INLINE_VISIBILITY
1612 __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2)
1614 for (; __begin1 != __end1; ++__begin1, ++__begin2)
1615 construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1));
1618 template <class _Tp>
1619 _LIBCPP_INLINE_VISIBILITY
1623 (is_same<allocator_type, allocator<_Tp> >::value
1624 || !__has_construct<allocator_type, _Tp*, _Tp>::value) &&
1625 is_trivially_move_constructible<_Tp>::value,
1628 __construct_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2)
1630 ptrdiff_t _Np = __end1 - __begin1;
1633 _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp));
1638 template <class _Iter, class _Ptr>
1639 _LIBCPP_INLINE_VISIBILITY
1642 __construct_range_forward(allocator_type& __a, _Iter __begin1, _Iter __end1, _Ptr& __begin2)
1644 for (; __begin1 != __end1; ++__begin1, (void) ++__begin2)
1645 construct(__a, _VSTD::__to_raw_pointer(__begin2), *__begin1);
1648 template <class _Tp>
1649 _LIBCPP_INLINE_VISIBILITY
1653 (is_same<allocator_type, allocator<_Tp> >::value
1654 || !__has_construct<allocator_type, _Tp*, _Tp>::value) &&
1655 is_trivially_move_constructible<_Tp>::value,
1658 __construct_range_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2)
1660 typedef typename remove_const<_Tp>::type _Vp;
1661 ptrdiff_t _Np = __end1 - __begin1;
1664 _VSTD::memcpy(const_cast<_Vp*>(__begin2), __begin1, _Np * sizeof(_Tp));
1669 template <class _Ptr>
1670 _LIBCPP_INLINE_VISIBILITY
1673 __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2)
1675 while (__end1 != __begin1)
1677 construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1));
1682 template <class _Tp>
1683 _LIBCPP_INLINE_VISIBILITY
1687 (is_same<allocator_type, allocator<_Tp> >::value
1688 || !__has_construct<allocator_type, _Tp*, _Tp>::value) &&
1689 is_trivially_move_constructible<_Tp>::value,
1692 __construct_backward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __end2)
1694 ptrdiff_t _Np = __end1 - __begin1;
1697 _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp));
1702 _LIBCPP_INLINE_VISIBILITY
1703 static pointer __allocate(allocator_type& __a, size_type __n,
1704 const_void_pointer __hint, true_type)
1705 {return __a.allocate(__n, __hint);}
1706 _LIBCPP_INLINE_VISIBILITY
1707 static pointer __allocate(allocator_type& __a, size_type __n,
1708 const_void_pointer, false_type)
1709 {return __a.allocate(__n);}
1711 #ifndef _LIBCPP_HAS_NO_VARIADICS
1712 template <class _Tp, class... _Args>
1713 _LIBCPP_INLINE_VISIBILITY
1714 static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args)
1715 {__a.construct(__p, _VSTD::forward<_Args>(__args)...);}
1716 template <class _Tp, class... _Args>
1717 _LIBCPP_INLINE_VISIBILITY
1718 static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args)
1720 ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...);
1722 #endif // _LIBCPP_HAS_NO_VARIADICS
1724 template <class _Tp>
1725 _LIBCPP_INLINE_VISIBILITY
1726 static void __destroy(true_type, allocator_type& __a, _Tp* __p)
1728 template <class _Tp>
1729 _LIBCPP_INLINE_VISIBILITY
1730 static void __destroy(false_type, allocator_type&, _Tp* __p)
1735 _LIBCPP_INLINE_VISIBILITY
1736 static size_type __max_size(true_type, const allocator_type& __a) _NOEXCEPT
1737 {return __a.max_size();}
1738 _LIBCPP_INLINE_VISIBILITY
1739 static size_type __max_size(false_type, const allocator_type&) _NOEXCEPT
1740 {return numeric_limits<size_type>::max() / sizeof(value_type);}
1742 _LIBCPP_INLINE_VISIBILITY
1743 static allocator_type
1744 __select_on_container_copy_construction(true_type, const allocator_type& __a)
1745 {return __a.select_on_container_copy_construction();}
1746 _LIBCPP_INLINE_VISIBILITY
1747 static allocator_type
1748 __select_on_container_copy_construction(false_type, const allocator_type& __a)
1752 template <class _Traits, class _Tp>
1753 struct __rebind_alloc_helper
1755 #ifndef _LIBCPP_CXX03_LANG
1756 typedef typename _Traits::template rebind_alloc<_Tp> type;
1758 typedef typename _Traits::template rebind_alloc<_Tp>::other type;
1764 template <class _Tp>
1765 class _LIBCPP_TEMPLATE_VIS allocator
1768 typedef size_t size_type;
1769 typedef ptrdiff_t difference_type;
1770 typedef _Tp* pointer;
1771 typedef const _Tp* const_pointer;
1772 typedef _Tp& reference;
1773 typedef const _Tp& const_reference;
1774 typedef _Tp value_type;
1776 typedef true_type propagate_on_container_move_assignment;
1777 typedef true_type is_always_equal;
1779 template <class _Up> struct rebind {typedef allocator<_Up> other;};
1781 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {}
1782 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {}
1783 _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT
1784 {return _VSTD::addressof(__x);}
1785 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT
1786 {return _VSTD::addressof(__x);}
1787 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
1788 pointer allocate(size_type __n, allocator<void>::const_pointer = 0)
1790 if (__n > max_size())
1791 __throw_length_error("allocator<T>::allocate(size_t n)"
1792 " 'n' exceeds maximum supported size");
1793 return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp)));
1795 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT
1796 {_VSTD::__libcpp_deallocate((void*)__p);}
1797 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT
1798 {return size_type(~0) / sizeof(_Tp);}
1799 #if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1800 template <class _Up, class... _Args>
1801 _LIBCPP_INLINE_VISIBILITY
1803 construct(_Up* __p, _Args&&... __args)
1805 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...);
1807 #else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1808 _LIBCPP_INLINE_VISIBILITY
1810 construct(pointer __p)
1812 ::new((void*)__p) _Tp();
1814 # if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1816 template <class _A0>
1817 _LIBCPP_INLINE_VISIBILITY
1819 construct(pointer __p, _A0& __a0)
1821 ::new((void*)__p) _Tp(__a0);
1823 template <class _A0>
1824 _LIBCPP_INLINE_VISIBILITY
1826 construct(pointer __p, const _A0& __a0)
1828 ::new((void*)__p) _Tp(__a0);
1830 # endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1831 template <class _A0, class _A1>
1832 _LIBCPP_INLINE_VISIBILITY
1834 construct(pointer __p, _A0& __a0, _A1& __a1)
1836 ::new((void*)__p) _Tp(__a0, __a1);
1838 template <class _A0, class _A1>
1839 _LIBCPP_INLINE_VISIBILITY
1841 construct(pointer __p, const _A0& __a0, _A1& __a1)
1843 ::new((void*)__p) _Tp(__a0, __a1);
1845 template <class _A0, class _A1>
1846 _LIBCPP_INLINE_VISIBILITY
1848 construct(pointer __p, _A0& __a0, const _A1& __a1)
1850 ::new((void*)__p) _Tp(__a0, __a1);
1852 template <class _A0, class _A1>
1853 _LIBCPP_INLINE_VISIBILITY
1855 construct(pointer __p, const _A0& __a0, const _A1& __a1)
1857 ::new((void*)__p) _Tp(__a0, __a1);
1859 #endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1860 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();}
1863 template <class _Tp>
1864 class _LIBCPP_TEMPLATE_VIS allocator<const _Tp>
1867 typedef size_t size_type;
1868 typedef ptrdiff_t difference_type;
1869 typedef const _Tp* pointer;
1870 typedef const _Tp* const_pointer;
1871 typedef const _Tp& reference;
1872 typedef const _Tp& const_reference;
1873 typedef const _Tp value_type;
1875 typedef true_type propagate_on_container_move_assignment;
1876 typedef true_type is_always_equal;
1878 template <class _Up> struct rebind {typedef allocator<_Up> other;};
1880 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {}
1881 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {}
1882 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT
1883 {return _VSTD::addressof(__x);}
1884 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0)
1886 if (__n > max_size())
1887 __throw_length_error("allocator<const T>::allocate(size_t n)"
1888 " 'n' exceeds maximum supported size");
1889 return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp)));
1891 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT
1892 {_VSTD::__libcpp_deallocate((void*) const_cast<_Tp *>(__p));}
1893 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT
1894 {return size_type(~0) / sizeof(_Tp);}
1895 #if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1896 template <class _Up, class... _Args>
1897 _LIBCPP_INLINE_VISIBILITY
1899 construct(_Up* __p, _Args&&... __args)
1901 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...);
1903 #else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1904 _LIBCPP_INLINE_VISIBILITY
1906 construct(pointer __p)
1908 ::new((void*) const_cast<_Tp *>(__p)) _Tp();
1910 # if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1912 template <class _A0>
1913 _LIBCPP_INLINE_VISIBILITY
1915 construct(pointer __p, _A0& __a0)
1917 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0);
1919 template <class _A0>
1920 _LIBCPP_INLINE_VISIBILITY
1922 construct(pointer __p, const _A0& __a0)
1924 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0);
1926 # endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1927 template <class _A0, class _A1>
1928 _LIBCPP_INLINE_VISIBILITY
1930 construct(pointer __p, _A0& __a0, _A1& __a1)
1932 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1);
1934 template <class _A0, class _A1>
1935 _LIBCPP_INLINE_VISIBILITY
1937 construct(pointer __p, const _A0& __a0, _A1& __a1)
1939 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1);
1941 template <class _A0, class _A1>
1942 _LIBCPP_INLINE_VISIBILITY
1944 construct(pointer __p, _A0& __a0, const _A1& __a1)
1946 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1);
1948 template <class _A0, class _A1>
1949 _LIBCPP_INLINE_VISIBILITY
1951 construct(pointer __p, const _A0& __a0, const _A1& __a1)
1953 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1);
1955 #endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1956 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();}
1959 template <class _Tp, class _Up>
1960 inline _LIBCPP_INLINE_VISIBILITY
1961 bool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;}
1963 template <class _Tp, class _Up>
1964 inline _LIBCPP_INLINE_VISIBILITY
1965 bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;}
1967 template <class _OutputIterator, class _Tp>
1968 class _LIBCPP_TEMPLATE_VIS raw_storage_iterator
1969 : public iterator<output_iterator_tag,
1970 _Tp, // purposefully not C++03
1971 ptrdiff_t, // purposefully not C++03
1972 _Tp*, // purposefully not C++03
1973 raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03
1976 _OutputIterator __x_;
1978 _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {}
1979 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;}
1980 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element)
1981 {::new(&*__x_) _Tp(__element); return *this;}
1982 #if _LIBCPP_STD_VER >= 14
1983 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element)
1984 {::new(&*__x_) _Tp(_VSTD::move(__element)); return *this;}
1986 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;}
1987 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int)
1988 {raw_storage_iterator __t(*this); ++__x_; return __t;}
1989 #if _LIBCPP_STD_VER >= 14
1990 _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; }
1994 template <class _Tp>
1995 pair<_Tp*, ptrdiff_t>
1996 get_temporary_buffer(ptrdiff_t __n) _NOEXCEPT
1998 pair<_Tp*, ptrdiff_t> __r(0, 0);
1999 const ptrdiff_t __m = (~ptrdiff_t(0) ^
2000 ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1)))
2006 __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow));
2017 template <class _Tp>
2018 inline _LIBCPP_INLINE_VISIBILITY
2019 void return_temporary_buffer(_Tp* __p) _NOEXCEPT {::operator delete(__p);}
2021 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
2022 template <class _Tp>
2029 class _LIBCPP_TEMPLATE_VIS auto_ptr
2034 typedef _Tp element_type;
2036 _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {}
2037 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {}
2038 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw()
2039 : __ptr_(__p.release()) {}
2040 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw()
2041 {reset(__p.release()); return *this;}
2042 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw()
2043 {reset(__p.release()); return *this;}
2044 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw()
2045 {reset(__p.__ptr_); return *this;}
2046 _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;}
2048 _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw()
2050 _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;}
2051 _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;}
2052 _LIBCPP_INLINE_VISIBILITY _Tp* release() throw()
2058 _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw()
2065 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {}
2066 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw()
2067 {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;}
2068 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw()
2069 {return auto_ptr<_Up>(release());}
2073 class _LIBCPP_TEMPLATE_VIS auto_ptr<void>
2076 typedef void element_type;
2080 template <class _Tp, int _Idx,
2081 bool _CanBeEmptyBase =
2082 is_empty<_Tp>::value && !__libcpp_is_final<_Tp>::value>
2083 struct __compressed_pair_elem {
2084 typedef _Tp _ParamT;
2085 typedef _Tp& reference;
2086 typedef const _Tp& const_reference;
2088 #ifndef _LIBCPP_CXX03_LANG
2089 _LIBCPP_INLINE_VISIBILITY constexpr __compressed_pair_elem() : __value_() {}
2091 template <class _Up, class = typename enable_if<
2092 !is_same<__compressed_pair_elem, typename decay<_Up>::type>::value
2094 _LIBCPP_INLINE_VISIBILITY
2096 __compressed_pair_elem(_Up&& __u)
2097 : __value_(_VSTD::forward<_Up>(__u)){};
2099 template <class... _Args, size_t... _Indexes>
2100 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
2101 __compressed_pair_elem(piecewise_construct_t, tuple<_Args...> __args,
2102 __tuple_indices<_Indexes...>)
2103 : __value_(_VSTD::forward<_Args>(_VSTD::get<_Indexes>(__args))...) {}
2105 _LIBCPP_INLINE_VISIBILITY __compressed_pair_elem() : __value_() {}
2106 _LIBCPP_INLINE_VISIBILITY
2107 __compressed_pair_elem(_ParamT __p) : __value_(std::forward<_ParamT>(__p)) {}
2110 _LIBCPP_INLINE_VISIBILITY reference __get() _NOEXCEPT { return __value_; }
2111 _LIBCPP_INLINE_VISIBILITY
2112 const_reference __get() const _NOEXCEPT { return __value_; }
2118 template <class _Tp, int _Idx>
2119 struct __compressed_pair_elem<_Tp, _Idx, true> : private _Tp {
2120 typedef _Tp _ParamT;
2121 typedef _Tp& reference;
2122 typedef const _Tp& const_reference;
2123 typedef _Tp __value_type;
2125 #ifndef _LIBCPP_CXX03_LANG
2126 _LIBCPP_INLINE_VISIBILITY constexpr __compressed_pair_elem() = default;
2128 template <class _Up, class = typename enable_if<
2129 !is_same<__compressed_pair_elem, typename decay<_Up>::type>::value
2131 _LIBCPP_INLINE_VISIBILITY
2133 __compressed_pair_elem(_Up&& __u)
2134 : __value_type(_VSTD::forward<_Up>(__u)){};
2136 template <class... _Args, size_t... _Indexes>
2137 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
2138 __compressed_pair_elem(piecewise_construct_t, tuple<_Args...> __args,
2139 __tuple_indices<_Indexes...>)
2140 : __value_type(_VSTD::forward<_Args>(_VSTD::get<_Indexes>(__args))...) {}
2142 _LIBCPP_INLINE_VISIBILITY __compressed_pair_elem() : __value_type() {}
2143 _LIBCPP_INLINE_VISIBILITY
2144 __compressed_pair_elem(_ParamT __p)
2145 : __value_type(std::forward<_ParamT>(__p)) {}
2148 _LIBCPP_INLINE_VISIBILITY reference __get() _NOEXCEPT { return *this; }
2149 _LIBCPP_INLINE_VISIBILITY
2150 const_reference __get() const _NOEXCEPT { return *this; }
2153 // Tag used to construct the second element of the compressed pair.
2154 struct __second_tag {};
2156 template <class _T1, class _T2>
2157 class __compressed_pair : private __compressed_pair_elem<_T1, 0>,
2158 private __compressed_pair_elem<_T2, 1> {
2159 typedef __compressed_pair_elem<_T1, 0> _Base1;
2160 typedef __compressed_pair_elem<_T2, 1> _Base2;
2162 // NOTE: This static assert should never fire because __compressed_pair
2163 // is *almost never* used in a scenario where it's possible for T1 == T2.
2164 // (The exception is std::function where it is possible that the function
2165 // object and the allocator have the same type).
2166 static_assert((!is_same<_T1, _T2>::value),
2167 "__compressed_pair cannot be instantated when T1 and T2 are the same type; "
2168 "The current implementation is NOT ABI-compatible with the previous "
2169 "implementation for this configuration");
2172 #ifndef _LIBCPP_CXX03_LANG
2173 template <bool _Dummy = true,
2174 class = typename enable_if<
2175 __dependent_type<is_default_constructible<_T1>, _Dummy>::value &&
2176 __dependent_type<is_default_constructible<_T2>, _Dummy>::value
2179 _LIBCPP_INLINE_VISIBILITY
2180 constexpr __compressed_pair() {}
2182 template <class _Tp, typename enable_if<!is_same<typename decay<_Tp>::type,
2183 __compressed_pair>::value,
2185 _LIBCPP_INLINE_VISIBILITY constexpr explicit
2186 __compressed_pair(_Tp&& __t)
2187 : _Base1(std::forward<_Tp>(__t)), _Base2() {}
2189 template <class _Tp>
2190 _LIBCPP_INLINE_VISIBILITY constexpr
2191 __compressed_pair(__second_tag, _Tp&& __t)
2192 : _Base1(), _Base2(std::forward<_Tp>(__t)) {}
2194 template <class _U1, class _U2>
2195 _LIBCPP_INLINE_VISIBILITY constexpr
2196 __compressed_pair(_U1&& __t1, _U2&& __t2)
2197 : _Base1(std::forward<_U1>(__t1)), _Base2(std::forward<_U2>(__t2)) {}
2199 template <class... _Args1, class... _Args2>
2200 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
2201 __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args,
2202 tuple<_Args2...> __second_args)
2203 : _Base1(__pc, _VSTD::move(__first_args),
2204 typename __make_tuple_indices<sizeof...(_Args1)>::type()),
2205 _Base2(__pc, _VSTD::move(__second_args),
2206 typename __make_tuple_indices<sizeof...(_Args2)>::type()) {}
2209 _LIBCPP_INLINE_VISIBILITY
2210 __compressed_pair() {}
2212 _LIBCPP_INLINE_VISIBILITY explicit
2213 __compressed_pair(_T1 __t1) : _Base1(_VSTD::forward<_T1>(__t1)) {}
2215 _LIBCPP_INLINE_VISIBILITY
2216 __compressed_pair(__second_tag, _T2 __t2)
2217 : _Base1(), _Base2(_VSTD::forward<_T2>(__t2)) {}
2219 _LIBCPP_INLINE_VISIBILITY
2220 __compressed_pair(_T1 __t1, _T2 __t2)
2221 : _Base1(_VSTD::forward<_T1>(__t1)), _Base2(_VSTD::forward<_T2>(__t2)) {}
2224 _LIBCPP_INLINE_VISIBILITY
2225 typename _Base1::reference first() _NOEXCEPT {
2226 return static_cast<_Base1&>(*this).__get();
2229 _LIBCPP_INLINE_VISIBILITY
2230 typename _Base1::const_reference first() const _NOEXCEPT {
2231 return static_cast<_Base1 const&>(*this).__get();
2234 _LIBCPP_INLINE_VISIBILITY
2235 typename _Base2::reference second() _NOEXCEPT {
2236 return static_cast<_Base2&>(*this).__get();
2239 _LIBCPP_INLINE_VISIBILITY
2240 typename _Base2::const_reference second() const _NOEXCEPT {
2241 return static_cast<_Base2 const&>(*this).__get();
2244 _LIBCPP_INLINE_VISIBILITY
2245 void swap(__compressed_pair& __x)
2246 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value &&
2247 __is_nothrow_swappable<_T2>::value)
2250 swap(first(), __x.first());
2251 swap(second(), __x.second());
2255 template <class _T1, class _T2>
2256 inline _LIBCPP_INLINE_VISIBILITY
2257 void swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y)
2258 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value &&
2259 __is_nothrow_swappable<_T2>::value) {
2265 template <class _Tp>
2266 struct _LIBCPP_TEMPLATE_VIS default_delete {
2267 static_assert(!is_function<_Tp>::value,
2268 "default_delete cannot be instantiated for function types");
2269 #ifndef _LIBCPP_CXX03_LANG
2270 _LIBCPP_INLINE_VISIBILITY constexpr default_delete() noexcept = default;
2272 _LIBCPP_INLINE_VISIBILITY default_delete() {}
2274 template <class _Up>
2275 _LIBCPP_INLINE_VISIBILITY
2276 default_delete(const default_delete<_Up>&,
2277 typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* =
2280 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __ptr) const _NOEXCEPT {
2281 static_assert(sizeof(_Tp) > 0,
2282 "default_delete can not delete incomplete type");
2283 static_assert(!is_void<_Tp>::value,
2284 "default_delete can not delete incomplete type");
2289 template <class _Tp>
2290 struct _LIBCPP_TEMPLATE_VIS default_delete<_Tp[]> {
2292 template <class _Up>
2293 struct _EnableIfConvertible
2294 : enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value> {};
2297 #ifndef _LIBCPP_CXX03_LANG
2298 _LIBCPP_INLINE_VISIBILITY constexpr default_delete() noexcept = default;
2300 _LIBCPP_INLINE_VISIBILITY default_delete() {}
2303 template <class _Up>
2304 _LIBCPP_INLINE_VISIBILITY
2305 default_delete(const default_delete<_Up[]>&,
2306 typename _EnableIfConvertible<_Up>::type* = 0) _NOEXCEPT {}
2308 template <class _Up>
2309 _LIBCPP_INLINE_VISIBILITY
2310 typename _EnableIfConvertible<_Up>::type
2311 operator()(_Up* __ptr) const _NOEXCEPT {
2312 static_assert(sizeof(_Tp) > 0,
2313 "default_delete can not delete incomplete type");
2314 static_assert(!is_void<_Tp>::value,
2315 "default_delete can not delete void type");
2322 #ifndef _LIBCPP_CXX03_LANG
2323 template <class _Deleter>
2324 struct __unique_ptr_deleter_sfinae {
2325 static_assert(!is_reference<_Deleter>::value, "incorrect specialization");
2326 typedef const _Deleter& __lval_ref_type;
2327 typedef _Deleter&& __good_rval_ref_type;
2328 typedef true_type __enable_rval_overload;
2331 template <class _Deleter>
2332 struct __unique_ptr_deleter_sfinae<_Deleter const&> {
2333 typedef const _Deleter& __lval_ref_type;
2334 typedef const _Deleter&& __bad_rval_ref_type;
2335 typedef false_type __enable_rval_overload;
2338 template <class _Deleter>
2339 struct __unique_ptr_deleter_sfinae<_Deleter&> {
2340 typedef _Deleter& __lval_ref_type;
2341 typedef _Deleter&& __bad_rval_ref_type;
2342 typedef false_type __enable_rval_overload;
2344 #endif // !defined(_LIBCPP_CXX03_LANG)
2346 template <class _Tp, class _Dp = default_delete<_Tp> >
2347 class _LIBCPP_TEMPLATE_VIS unique_ptr {
2349 typedef _Tp element_type;
2350 typedef _Dp deleter_type;
2351 typedef typename __pointer_type<_Tp, deleter_type>::type pointer;
2353 static_assert(!is_rvalue_reference<deleter_type>::value,
2354 "the specified deleter type cannot be an rvalue reference");
2357 __compressed_pair<pointer, deleter_type> __ptr_;
2359 struct __nat { int __for_bool_; };
2361 #ifndef _LIBCPP_CXX03_LANG
2362 typedef __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE;
2364 template <bool _Dummy>
2365 using _LValRefType =
2366 typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type;
2368 template <bool _Dummy>
2369 using _GoodRValRefType =
2370 typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type;
2372 template <bool _Dummy>
2373 using _BadRValRefType =
2374 typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type;
2376 template <bool _Dummy, class _Deleter = typename __dependent_type<
2377 __identity<deleter_type>, _Dummy>::type>
2378 using _EnableIfDeleterDefaultConstructible =
2379 typename enable_if<is_default_constructible<_Deleter>::value &&
2380 !is_pointer<_Deleter>::value>::type;
2382 template <class _ArgType>
2383 using _EnableIfDeleterConstructible =
2384 typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type;
2386 template <class _UPtr, class _Up>
2387 using _EnableIfMoveConvertible = typename enable_if<
2388 is_convertible<typename _UPtr::pointer, pointer>::value &&
2389 !is_array<_Up>::value
2392 template <class _UDel>
2393 using _EnableIfDeleterConvertible = typename enable_if<
2394 (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) ||
2395 (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value)
2398 template <class _UDel>
2399 using _EnableIfDeleterAssignable = typename enable_if<
2400 is_assignable<_Dp&, _UDel&&>::value
2404 template <bool _Dummy = true,
2405 class = _EnableIfDeleterDefaultConstructible<_Dummy>>
2406 _LIBCPP_INLINE_VISIBILITY
2407 constexpr unique_ptr() noexcept : __ptr_(pointer()) {}
2409 template <bool _Dummy = true,
2410 class = _EnableIfDeleterDefaultConstructible<_Dummy>>
2411 _LIBCPP_INLINE_VISIBILITY
2412 constexpr unique_ptr(nullptr_t) noexcept : __ptr_(pointer()) {}
2414 template <bool _Dummy = true,
2415 class = _EnableIfDeleterDefaultConstructible<_Dummy>>
2416 _LIBCPP_INLINE_VISIBILITY
2417 explicit unique_ptr(pointer __p) noexcept : __ptr_(__p) {}
2419 template <bool _Dummy = true,
2420 class = _EnableIfDeleterConstructible<_LValRefType<_Dummy>>>
2421 _LIBCPP_INLINE_VISIBILITY
2422 unique_ptr(pointer __p, _LValRefType<_Dummy> __d) noexcept
2423 : __ptr_(__p, __d) {}
2425 template <bool _Dummy = true,
2426 class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy>>>
2427 _LIBCPP_INLINE_VISIBILITY
2428 unique_ptr(pointer __p, _GoodRValRefType<_Dummy> __d) noexcept
2429 : __ptr_(__p, _VSTD::move(__d)) {
2430 static_assert(!is_reference<deleter_type>::value,
2431 "rvalue deleter bound to reference");
2434 template <bool _Dummy = true,
2435 class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy>>>
2436 _LIBCPP_INLINE_VISIBILITY
2437 unique_ptr(pointer __p, _BadRValRefType<_Dummy> __d) = delete;
2439 _LIBCPP_INLINE_VISIBILITY
2440 unique_ptr(unique_ptr&& __u) noexcept
2441 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {
2444 template <class _Up, class _Ep,
2445 class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
2446 class = _EnableIfDeleterConvertible<_Ep>
2448 _LIBCPP_INLINE_VISIBILITY
2449 unique_ptr(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT
2450 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {}
2452 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
2453 template <class _Up>
2454 _LIBCPP_INLINE_VISIBILITY
2455 unique_ptr(auto_ptr<_Up>&& __p,
2456 typename enable_if<is_convertible<_Up*, _Tp*>::value &&
2457 is_same<_Dp, default_delete<_Tp>>::value,
2458 __nat>::type = __nat()) _NOEXCEPT
2459 : __ptr_(__p.release()) {}
2462 _LIBCPP_INLINE_VISIBILITY
2463 unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT {
2464 reset(__u.release());
2465 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter());
2469 template <class _Up, class _Ep,
2470 class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
2471 class = _EnableIfDeleterAssignable<_Ep>
2473 _LIBCPP_INLINE_VISIBILITY
2474 unique_ptr& operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT {
2475 reset(__u.release());
2476 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter());
2480 #else // _LIBCPP_CXX03_LANG
2482 unique_ptr(unique_ptr&);
2483 template <class _Up, class _Ep> unique_ptr(unique_ptr<_Up, _Ep>&);
2485 unique_ptr& operator=(unique_ptr&);
2486 template <class _Up, class _Ep> unique_ptr& operator=(unique_ptr<_Up, _Ep>&);
2489 _LIBCPP_INLINE_VISIBILITY
2490 unique_ptr() : __ptr_(pointer())
2492 static_assert(!is_pointer<deleter_type>::value,
2493 "unique_ptr constructed with null function pointer deleter");
2494 static_assert(is_default_constructible<deleter_type>::value,
2495 "unique_ptr::deleter_type is not default constructible");
2497 _LIBCPP_INLINE_VISIBILITY
2498 unique_ptr(nullptr_t) : __ptr_(pointer())
2500 static_assert(!is_pointer<deleter_type>::value,
2501 "unique_ptr constructed with null function pointer deleter");
2503 _LIBCPP_INLINE_VISIBILITY
2504 explicit unique_ptr(pointer __p)
2505 : __ptr_(_VSTD::move(__p)) {
2506 static_assert(!is_pointer<deleter_type>::value,
2507 "unique_ptr constructed with null function pointer deleter");
2510 _LIBCPP_INLINE_VISIBILITY
2511 operator __rv<unique_ptr>() {
2512 return __rv<unique_ptr>(*this);
2515 _LIBCPP_INLINE_VISIBILITY
2516 unique_ptr(__rv<unique_ptr> __u)
2517 : __ptr_(__u->release(),
2518 _VSTD::forward<deleter_type>(__u->get_deleter())) {}
2520 template <class _Up, class _Ep>
2521 _LIBCPP_INLINE_VISIBILITY
2523 !is_array<_Up>::value &&
2524 is_convertible<typename unique_ptr<_Up, _Ep>::pointer,
2526 is_assignable<deleter_type&, _Ep&>::value,
2528 operator=(unique_ptr<_Up, _Ep> __u) {
2529 reset(__u.release());
2530 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter());
2534 _LIBCPP_INLINE_VISIBILITY
2535 unique_ptr(pointer __p, deleter_type __d)
2536 : __ptr_(_VSTD::move(__p), _VSTD::move(__d)) {}
2537 #endif // _LIBCPP_CXX03_LANG
2539 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
2540 template <class _Up>
2541 _LIBCPP_INLINE_VISIBILITY
2542 typename enable_if<is_convertible<_Up*, _Tp*>::value &&
2543 is_same<_Dp, default_delete<_Tp> >::value,
2545 operator=(auto_ptr<_Up> __p) {
2546 reset(__p.release());
2551 _LIBCPP_INLINE_VISIBILITY
2552 ~unique_ptr() { reset(); }
2554 _LIBCPP_INLINE_VISIBILITY
2555 unique_ptr& operator=(nullptr_t) _NOEXCEPT {
2560 _LIBCPP_INLINE_VISIBILITY
2561 typename add_lvalue_reference<_Tp>::type
2563 return *__ptr_.first();
2565 _LIBCPP_INLINE_VISIBILITY
2566 pointer operator->() const _NOEXCEPT {
2567 return __ptr_.first();
2569 _LIBCPP_INLINE_VISIBILITY
2570 pointer get() const _NOEXCEPT {
2571 return __ptr_.first();
2573 _LIBCPP_INLINE_VISIBILITY
2574 deleter_type& get_deleter() _NOEXCEPT {
2575 return __ptr_.second();
2577 _LIBCPP_INLINE_VISIBILITY
2578 const deleter_type& get_deleter() const _NOEXCEPT {
2579 return __ptr_.second();
2581 _LIBCPP_INLINE_VISIBILITY
2582 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {
2583 return __ptr_.first() != nullptr;
2586 _LIBCPP_INLINE_VISIBILITY
2587 pointer release() _NOEXCEPT {
2588 pointer __t = __ptr_.first();
2589 __ptr_.first() = pointer();
2593 _LIBCPP_INLINE_VISIBILITY
2594 void reset(pointer __p = pointer()) _NOEXCEPT {
2595 pointer __tmp = __ptr_.first();
2596 __ptr_.first() = __p;
2598 __ptr_.second()(__tmp);
2601 _LIBCPP_INLINE_VISIBILITY
2602 void swap(unique_ptr& __u) _NOEXCEPT {
2603 __ptr_.swap(__u.__ptr_);
2608 template <class _Tp, class _Dp>
2609 class _LIBCPP_TEMPLATE_VIS unique_ptr<_Tp[], _Dp> {
2611 typedef _Tp element_type;
2612 typedef _Dp deleter_type;
2613 typedef typename __pointer_type<_Tp, deleter_type>::type pointer;
2616 __compressed_pair<pointer, deleter_type> __ptr_;
2618 template <class _From>
2619 struct _CheckArrayPointerConversion : is_same<_From, pointer> {};
2621 template <class _FromElem>
2622 struct _CheckArrayPointerConversion<_FromElem*>
2623 : integral_constant<bool,
2624 is_same<_FromElem*, pointer>::value ||
2625 (is_same<pointer, element_type*>::value &&
2626 is_convertible<_FromElem(*)[], element_type(*)[]>::value)
2630 #ifndef _LIBCPP_CXX03_LANG
2631 typedef __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE;
2633 template <bool _Dummy>
2634 using _LValRefType =
2635 typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type;
2637 template <bool _Dummy>
2638 using _GoodRValRefType =
2639 typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type;
2641 template <bool _Dummy>
2642 using _BadRValRefType =
2643 typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type;
2645 template <bool _Dummy, class _Deleter = typename __dependent_type<
2646 __identity<deleter_type>, _Dummy>::type>
2647 using _EnableIfDeleterDefaultConstructible =
2648 typename enable_if<is_default_constructible<_Deleter>::value &&
2649 !is_pointer<_Deleter>::value>::type;
2651 template <class _ArgType>
2652 using _EnableIfDeleterConstructible =
2653 typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type;
2655 template <class _Pp>
2656 using _EnableIfPointerConvertible = typename enable_if<
2657 _CheckArrayPointerConversion<_Pp>::value
2660 template <class _UPtr, class _Up,
2661 class _ElemT = typename _UPtr::element_type>
2662 using _EnableIfMoveConvertible = typename enable_if<
2663 is_array<_Up>::value &&
2664 is_same<pointer, element_type*>::value &&
2665 is_same<typename _UPtr::pointer, _ElemT*>::value &&
2666 is_convertible<_ElemT(*)[], element_type(*)[]>::value
2669 template <class _UDel>
2670 using _EnableIfDeleterConvertible = typename enable_if<
2671 (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) ||
2672 (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value)
2675 template <class _UDel>
2676 using _EnableIfDeleterAssignable = typename enable_if<
2677 is_assignable<_Dp&, _UDel&&>::value
2681 template <bool _Dummy = true,
2682 class = _EnableIfDeleterDefaultConstructible<_Dummy>>
2683 _LIBCPP_INLINE_VISIBILITY
2684 constexpr unique_ptr() noexcept : __ptr_(pointer()) {}
2686 template <bool _Dummy = true,
2687 class = _EnableIfDeleterDefaultConstructible<_Dummy>>
2688 _LIBCPP_INLINE_VISIBILITY
2689 constexpr unique_ptr(nullptr_t) noexcept : __ptr_(pointer()) {}
2691 template <class _Pp, bool _Dummy = true,
2692 class = _EnableIfDeleterDefaultConstructible<_Dummy>,
2693 class = _EnableIfPointerConvertible<_Pp>>
2694 _LIBCPP_INLINE_VISIBILITY
2695 explicit unique_ptr(_Pp __p) noexcept
2698 template <class _Pp, bool _Dummy = true,
2699 class = _EnableIfDeleterConstructible<_LValRefType<_Dummy>>,
2700 class = _EnableIfPointerConvertible<_Pp>>
2701 _LIBCPP_INLINE_VISIBILITY
2702 unique_ptr(_Pp __p, _LValRefType<_Dummy> __d) noexcept
2703 : __ptr_(__p, __d) {}
2705 template <bool _Dummy = true,
2706 class = _EnableIfDeleterConstructible<_LValRefType<_Dummy>>>
2707 _LIBCPP_INLINE_VISIBILITY
2708 unique_ptr(nullptr_t, _LValRefType<_Dummy> __d) noexcept
2709 : __ptr_(nullptr, __d) {}
2711 template <class _Pp, bool _Dummy = true,
2712 class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy>>,
2713 class = _EnableIfPointerConvertible<_Pp>>
2714 _LIBCPP_INLINE_VISIBILITY
2715 unique_ptr(_Pp __p, _GoodRValRefType<_Dummy> __d) noexcept
2716 : __ptr_(__p, _VSTD::move(__d)) {
2717 static_assert(!is_reference<deleter_type>::value,
2718 "rvalue deleter bound to reference");
2721 template <bool _Dummy = true,
2722 class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy>>>
2723 _LIBCPP_INLINE_VISIBILITY
2724 unique_ptr(nullptr_t, _GoodRValRefType<_Dummy> __d) noexcept
2725 : __ptr_(nullptr, _VSTD::move(__d)) {
2726 static_assert(!is_reference<deleter_type>::value,
2727 "rvalue deleter bound to reference");
2730 template <class _Pp, bool _Dummy = true,
2731 class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy>>,
2732 class = _EnableIfPointerConvertible<_Pp>>
2733 _LIBCPP_INLINE_VISIBILITY
2734 unique_ptr(_Pp __p, _BadRValRefType<_Dummy> __d) = delete;
2736 _LIBCPP_INLINE_VISIBILITY
2737 unique_ptr(unique_ptr&& __u) noexcept
2738 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {
2741 _LIBCPP_INLINE_VISIBILITY
2742 unique_ptr& operator=(unique_ptr&& __u) noexcept {
2743 reset(__u.release());
2744 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter());
2748 template <class _Up, class _Ep,
2749 class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
2750 class = _EnableIfDeleterConvertible<_Ep>
2752 _LIBCPP_INLINE_VISIBILITY
2753 unique_ptr(unique_ptr<_Up, _Ep>&& __u) noexcept
2754 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {
2757 template <class _Up, class _Ep,
2758 class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>,
2759 class = _EnableIfDeleterAssignable<_Ep>
2761 _LIBCPP_INLINE_VISIBILITY
2763 operator=(unique_ptr<_Up, _Ep>&& __u) noexcept {
2764 reset(__u.release());
2765 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter());
2769 #else // _LIBCPP_CXX03_LANG
2771 template <class _Up> explicit unique_ptr(_Up);
2773 unique_ptr(unique_ptr&);
2774 template <class _Up> unique_ptr(unique_ptr<_Up>&);
2776 unique_ptr& operator=(unique_ptr&);
2777 template <class _Up> unique_ptr& operator=(unique_ptr<_Up>&);
2779 template <class _Up>
2781 typename conditional<
2782 is_reference<deleter_type>::value, deleter_type,
2783 typename add_lvalue_reference<const deleter_type>::type>::type,
2784 typename enable_if<is_convertible<_Up, pointer>::value,
2785 __nat>::type = __nat());
2787 _LIBCPP_INLINE_VISIBILITY
2788 unique_ptr() : __ptr_(pointer()) {
2789 static_assert(!is_pointer<deleter_type>::value,
2790 "unique_ptr constructed with null function pointer deleter");
2792 _LIBCPP_INLINE_VISIBILITY
2793 unique_ptr(nullptr_t) : __ptr_(pointer()) {
2794 static_assert(!is_pointer<deleter_type>::value,
2795 "unique_ptr constructed with null function pointer deleter");
2798 _LIBCPP_INLINE_VISIBILITY
2799 explicit unique_ptr(pointer __p) : __ptr_(__p) {
2800 static_assert(!is_pointer<deleter_type>::value,
2801 "unique_ptr constructed with null function pointer deleter");
2804 _LIBCPP_INLINE_VISIBILITY
2805 unique_ptr(pointer __p, deleter_type __d)
2806 : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {}
2808 _LIBCPP_INLINE_VISIBILITY
2809 unique_ptr(nullptr_t, deleter_type __d)
2810 : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {}
2812 _LIBCPP_INLINE_VISIBILITY
2813 operator __rv<unique_ptr>() {
2814 return __rv<unique_ptr>(*this);
2817 _LIBCPP_INLINE_VISIBILITY
2818 unique_ptr(__rv<unique_ptr> __u)
2819 : __ptr_(__u->release(),
2820 _VSTD::forward<deleter_type>(__u->get_deleter())) {}
2822 _LIBCPP_INLINE_VISIBILITY
2823 unique_ptr& operator=(__rv<unique_ptr> __u) {
2824 reset(__u->release());
2825 __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter());
2829 #endif // _LIBCPP_CXX03_LANG
2832 _LIBCPP_INLINE_VISIBILITY
2833 ~unique_ptr() { reset(); }
2835 _LIBCPP_INLINE_VISIBILITY
2836 unique_ptr& operator=(nullptr_t) _NOEXCEPT {
2841 _LIBCPP_INLINE_VISIBILITY
2842 typename add_lvalue_reference<_Tp>::type
2843 operator[](size_t __i) const {
2844 return __ptr_.first()[__i];
2846 _LIBCPP_INLINE_VISIBILITY
2847 pointer get() const _NOEXCEPT {
2848 return __ptr_.first();
2851 _LIBCPP_INLINE_VISIBILITY
2852 deleter_type& get_deleter() _NOEXCEPT {
2853 return __ptr_.second();
2856 _LIBCPP_INLINE_VISIBILITY
2857 const deleter_type& get_deleter() const _NOEXCEPT {
2858 return __ptr_.second();
2860 _LIBCPP_INLINE_VISIBILITY
2861 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {
2862 return __ptr_.first() != nullptr;
2865 _LIBCPP_INLINE_VISIBILITY
2866 pointer release() _NOEXCEPT {
2867 pointer __t = __ptr_.first();
2868 __ptr_.first() = pointer();
2872 template <class _Pp>
2873 _LIBCPP_INLINE_VISIBILITY
2875 _CheckArrayPointerConversion<_Pp>::value
2877 reset(_Pp __p) _NOEXCEPT {
2878 pointer __tmp = __ptr_.first();
2879 __ptr_.first() = __p;
2881 __ptr_.second()(__tmp);
2884 _LIBCPP_INLINE_VISIBILITY
2885 void reset(nullptr_t = nullptr) _NOEXCEPT {
2886 pointer __tmp = __ptr_.first();
2887 __ptr_.first() = nullptr;
2889 __ptr_.second()(__tmp);
2892 _LIBCPP_INLINE_VISIBILITY
2893 void swap(unique_ptr& __u) _NOEXCEPT {
2894 __ptr_.swap(__u.__ptr_);
2899 template <class _Tp, class _Dp>
2900 inline _LIBCPP_INLINE_VISIBILITY
2902 __is_swappable<_Dp>::value,
2905 swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);}
2907 template <class _T1, class _D1, class _T2, class _D2>
2908 inline _LIBCPP_INLINE_VISIBILITY
2910 operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();}
2912 template <class _T1, class _D1, class _T2, class _D2>
2913 inline _LIBCPP_INLINE_VISIBILITY
2915 operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);}
2917 template <class _T1, class _D1, class _T2, class _D2>
2918 inline _LIBCPP_INLINE_VISIBILITY
2920 operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y)
2922 typedef typename unique_ptr<_T1, _D1>::pointer _P1;
2923 typedef typename unique_ptr<_T2, _D2>::pointer _P2;
2924 typedef typename common_type<_P1, _P2>::type _Vp;
2925 return less<_Vp>()(__x.get(), __y.get());
2928 template <class _T1, class _D1, class _T2, class _D2>
2929 inline _LIBCPP_INLINE_VISIBILITY
2931 operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;}
2933 template <class _T1, class _D1, class _T2, class _D2>
2934 inline _LIBCPP_INLINE_VISIBILITY
2936 operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);}
2938 template <class _T1, class _D1, class _T2, class _D2>
2939 inline _LIBCPP_INLINE_VISIBILITY
2941 operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);}
2943 template <class _T1, class _D1>
2944 inline _LIBCPP_INLINE_VISIBILITY
2946 operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT
2951 template <class _T1, class _D1>
2952 inline _LIBCPP_INLINE_VISIBILITY
2954 operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT
2959 template <class _T1, class _D1>
2960 inline _LIBCPP_INLINE_VISIBILITY
2962 operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT
2964 return static_cast<bool>(__x);
2967 template <class _T1, class _D1>
2968 inline _LIBCPP_INLINE_VISIBILITY
2970 operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT
2972 return static_cast<bool>(__x);
2975 template <class _T1, class _D1>
2976 inline _LIBCPP_INLINE_VISIBILITY
2978 operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t)
2980 typedef typename unique_ptr<_T1, _D1>::pointer _P1;
2981 return less<_P1>()(__x.get(), nullptr);
2984 template <class _T1, class _D1>
2985 inline _LIBCPP_INLINE_VISIBILITY
2987 operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x)
2989 typedef typename unique_ptr<_T1, _D1>::pointer _P1;
2990 return less<_P1>()(nullptr, __x.get());
2993 template <class _T1, class _D1>
2994 inline _LIBCPP_INLINE_VISIBILITY
2996 operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t)
2998 return nullptr < __x;
3001 template <class _T1, class _D1>
3002 inline _LIBCPP_INLINE_VISIBILITY
3004 operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x)
3006 return __x < nullptr;
3009 template <class _T1, class _D1>
3010 inline _LIBCPP_INLINE_VISIBILITY
3012 operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t)
3014 return !(nullptr < __x);
3017 template <class _T1, class _D1>
3018 inline _LIBCPP_INLINE_VISIBILITY
3020 operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x)
3022 return !(__x < nullptr);
3025 template <class _T1, class _D1>
3026 inline _LIBCPP_INLINE_VISIBILITY
3028 operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t)
3030 return !(__x < nullptr);
3033 template <class _T1, class _D1>
3034 inline _LIBCPP_INLINE_VISIBILITY
3036 operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x)
3038 return !(nullptr < __x);
3041 #ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3043 template <class _Tp, class _Dp>
3044 inline _LIBCPP_INLINE_VISIBILITY
3045 unique_ptr<_Tp, _Dp>
3046 move(unique_ptr<_Tp, _Dp>& __t)
3048 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t));
3053 #if _LIBCPP_STD_VER > 11
3058 typedef unique_ptr<_Tp> __unique_single;
3062 struct __unique_if<_Tp[]>
3064 typedef unique_ptr<_Tp[]> __unique_array_unknown_bound;
3067 template<class _Tp, size_t _Np>
3068 struct __unique_if<_Tp[_Np]>
3070 typedef void __unique_array_known_bound;
3073 template<class _Tp, class... _Args>
3074 inline _LIBCPP_INLINE_VISIBILITY
3075 typename __unique_if<_Tp>::__unique_single
3076 make_unique(_Args&&... __args)
3078 return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...));
3082 inline _LIBCPP_INLINE_VISIBILITY
3083 typename __unique_if<_Tp>::__unique_array_unknown_bound
3084 make_unique(size_t __n)
3086 typedef typename remove_extent<_Tp>::type _Up;
3087 return unique_ptr<_Tp>(new _Up[__n]());
3090 template<class _Tp, class... _Args>
3091 typename __unique_if<_Tp>::__unique_array_known_bound
3092 make_unique(_Args&&...) = delete;
3094 #endif // _LIBCPP_STD_VER > 11
3096 template <class _Tp, class _Dp>
3097 #ifdef _LIBCPP_CXX03_LANG
3098 struct _LIBCPP_TEMPLATE_VIS hash<unique_ptr<_Tp, _Dp> >
3100 struct _LIBCPP_TEMPLATE_VIS hash<__enable_hash_helper<
3101 unique_ptr<_Tp, _Dp>, typename unique_ptr<_Tp, _Dp>::pointer>>
3104 typedef unique_ptr<_Tp, _Dp> argument_type;
3105 typedef size_t result_type;
3106 _LIBCPP_INLINE_VISIBILITY
3107 result_type operator()(const argument_type& __ptr) const
3109 typedef typename argument_type::pointer pointer;
3110 return hash<pointer>()(__ptr.get());
3119 template <class _Tp>
3120 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT
3121 {for (size_t __i = 0; __i < __size_; ++__i, ++__p) __p->~_Tp();}
3123 template <class _Tp>
3124 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT
3127 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT
3129 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT
3132 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT
3134 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT
3137 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT
3140 template <class _Tp>
3141 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT
3142 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
3144 template <class _Tp>
3145 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT
3146 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
3148 template <class _Tp>
3149 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT
3150 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
3153 template <class _Alloc>
3154 class __allocator_destructor
3156 typedef allocator_traits<_Alloc> __alloc_traits;
3158 typedef typename __alloc_traits::pointer pointer;
3159 typedef typename __alloc_traits::size_type size_type;
3164 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s)
3166 : __alloc_(__a), __s_(__s) {}
3167 _LIBCPP_INLINE_VISIBILITY
3168 void operator()(pointer __p) _NOEXCEPT
3169 {__alloc_traits::deallocate(__alloc_, __p, __s_);}
3172 template <class _InputIterator, class _ForwardIterator>
3174 uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r)
3176 typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3177 #ifndef _LIBCPP_NO_EXCEPTIONS
3178 _ForwardIterator __s = __r;
3182 for (; __f != __l; ++__f, (void) ++__r)
3183 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f);
3184 #ifndef _LIBCPP_NO_EXCEPTIONS
3188 for (; __s != __r; ++__s)
3196 template <class _InputIterator, class _Size, class _ForwardIterator>
3198 uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r)
3200 typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3201 #ifndef _LIBCPP_NO_EXCEPTIONS
3202 _ForwardIterator __s = __r;
3206 for (; __n > 0; ++__f, (void) ++__r, (void) --__n)
3207 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f);
3208 #ifndef _LIBCPP_NO_EXCEPTIONS
3212 for (; __s != __r; ++__s)
3220 template <class _ForwardIterator, class _Tp>
3222 uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x)
3224 typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3225 #ifndef _LIBCPP_NO_EXCEPTIONS
3226 _ForwardIterator __s = __f;
3230 for (; __f != __l; ++__f)
3231 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x);
3232 #ifndef _LIBCPP_NO_EXCEPTIONS
3236 for (; __s != __f; ++__s)
3243 template <class _ForwardIterator, class _Size, class _Tp>
3245 uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x)
3247 typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3248 #ifndef _LIBCPP_NO_EXCEPTIONS
3249 _ForwardIterator __s = __f;
3253 for (; __n > 0; ++__f, (void) --__n)
3254 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x);
3255 #ifndef _LIBCPP_NO_EXCEPTIONS
3259 for (; __s != __f; ++__s)
3267 #if _LIBCPP_STD_VER > 14
3269 template <class _Tp>
3270 inline _LIBCPP_INLINE_VISIBILITY
3271 void destroy_at(_Tp* __loc) {
3272 _LIBCPP_ASSERT(__loc, "null pointer given to destroy_at");
3276 template <class _ForwardIterator>
3277 inline _LIBCPP_INLINE_VISIBILITY
3278 void destroy(_ForwardIterator __first, _ForwardIterator __last) {
3279 for (; __first != __last; ++__first)
3280 _VSTD::destroy_at(_VSTD::addressof(*__first));
3283 template <class _ForwardIterator, class _Size>
3284 inline _LIBCPP_INLINE_VISIBILITY
3285 _ForwardIterator destroy_n(_ForwardIterator __first, _Size __n) {
3286 for (; __n > 0; (void)++__first, --__n)
3287 _VSTD::destroy_at(_VSTD::addressof(*__first));
3291 template <class _ForwardIterator>
3292 inline _LIBCPP_INLINE_VISIBILITY
3293 void uninitialized_default_construct(_ForwardIterator __first, _ForwardIterator __last) {
3294 using _Vt = typename iterator_traits<_ForwardIterator>::value_type;
3295 auto __idx = __first;
3296 #ifndef _LIBCPP_NO_EXCEPTIONS
3299 for (; __idx != __last; ++__idx)
3300 ::new((void*)_VSTD::addressof(*__idx)) _Vt;
3301 #ifndef _LIBCPP_NO_EXCEPTIONS
3303 _VSTD::destroy(__first, __idx);
3309 template <class _ForwardIterator, class _Size>
3310 inline _LIBCPP_INLINE_VISIBILITY
3311 _ForwardIterator uninitialized_default_construct_n(_ForwardIterator __first, _Size __n) {
3312 using _Vt = typename iterator_traits<_ForwardIterator>::value_type;
3313 auto __idx = __first;
3314 #ifndef _LIBCPP_NO_EXCEPTIONS
3317 for (; __n > 0; (void)++__idx, --__n)
3318 ::new((void*)_VSTD::addressof(*__idx)) _Vt;
3320 #ifndef _LIBCPP_NO_EXCEPTIONS
3322 _VSTD::destroy(__first, __idx);
3329 template <class _ForwardIterator>
3330 inline _LIBCPP_INLINE_VISIBILITY
3331 void uninitialized_value_construct(_ForwardIterator __first, _ForwardIterator __last) {
3332 using _Vt = typename iterator_traits<_ForwardIterator>::value_type;
3333 auto __idx = __first;
3334 #ifndef _LIBCPP_NO_EXCEPTIONS
3337 for (; __idx != __last; ++__idx)
3338 ::new((void*)_VSTD::addressof(*__idx)) _Vt();
3339 #ifndef _LIBCPP_NO_EXCEPTIONS
3341 _VSTD::destroy(__first, __idx);
3347 template <class _ForwardIterator, class _Size>
3348 inline _LIBCPP_INLINE_VISIBILITY
3349 _ForwardIterator uninitialized_value_construct_n(_ForwardIterator __first, _Size __n) {
3350 using _Vt = typename iterator_traits<_ForwardIterator>::value_type;
3351 auto __idx = __first;
3352 #ifndef _LIBCPP_NO_EXCEPTIONS
3355 for (; __n > 0; (void)++__idx, --__n)
3356 ::new((void*)_VSTD::addressof(*__idx)) _Vt();
3358 #ifndef _LIBCPP_NO_EXCEPTIONS
3360 _VSTD::destroy(__first, __idx);
3367 template <class _InputIt, class _ForwardIt>
3368 inline _LIBCPP_INLINE_VISIBILITY
3369 _ForwardIt uninitialized_move(_InputIt __first, _InputIt __last, _ForwardIt __first_res) {
3370 using _Vt = typename iterator_traits<_ForwardIt>::value_type;
3371 auto __idx = __first_res;
3372 #ifndef _LIBCPP_NO_EXCEPTIONS
3375 for (; __first != __last; (void)++__idx, ++__first)
3376 ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first));
3378 #ifndef _LIBCPP_NO_EXCEPTIONS
3380 _VSTD::destroy(__first_res, __idx);
3386 template <class _InputIt, class _Size, class _ForwardIt>
3387 inline _LIBCPP_INLINE_VISIBILITY
3388 pair<_InputIt, _ForwardIt>
3389 uninitialized_move_n(_InputIt __first, _Size __n, _ForwardIt __first_res) {
3390 using _Vt = typename iterator_traits<_ForwardIt>::value_type;
3391 auto __idx = __first_res;
3392 #ifndef _LIBCPP_NO_EXCEPTIONS
3395 for (; __n > 0; ++__idx, (void)++__first, --__n)
3396 ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first));
3397 return {__first, __idx};
3398 #ifndef _LIBCPP_NO_EXCEPTIONS
3400 _VSTD::destroy(__first_res, __idx);
3407 #endif // _LIBCPP_STD_VER > 14
3409 // NOTE: Relaxed and acq/rel atomics (for increment and decrement respectively)
3410 // should be sufficient for thread safety.
3411 // See https://bugs.llvm.org/show_bug.cgi?id=22803
3412 #if defined(__clang__) && __has_builtin(__atomic_add_fetch) \
3413 && defined(__ATOMIC_RELAXED) \
3414 && defined(__ATOMIC_ACQ_REL)
3415 # define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT
3416 #elif !defined(__clang__) && defined(_GNUC_VER) && _GNUC_VER >= 407
3417 # define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT
3420 template <class _Tp>
3421 inline _LIBCPP_INLINE_VISIBILITY _Tp
3422 __libcpp_atomic_refcount_increment(_Tp& __t) _NOEXCEPT
3424 #if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS)
3425 return __atomic_add_fetch(&__t, 1, __ATOMIC_RELAXED);
3431 template <class _Tp>
3432 inline _LIBCPP_INLINE_VISIBILITY _Tp
3433 __libcpp_atomic_refcount_decrement(_Tp& __t) _NOEXCEPT
3435 #if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS)
3436 return __atomic_add_fetch(&__t, -1, __ATOMIC_ACQ_REL);
3442 class _LIBCPP_EXCEPTION_ABI bad_weak_ptr
3443 : public std::exception
3446 virtual ~bad_weak_ptr() _NOEXCEPT;
3447 virtual const char* what() const _NOEXCEPT;
3450 _LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINE
3451 void __throw_bad_weak_ptr()
3453 #ifndef _LIBCPP_NO_EXCEPTIONS
3454 throw bad_weak_ptr();
3460 template<class _Tp> class _LIBCPP_TEMPLATE_VIS weak_ptr;
3462 class _LIBCPP_TYPE_VIS __shared_count
3464 __shared_count(const __shared_count&);
3465 __shared_count& operator=(const __shared_count&);
3468 long __shared_owners_;
3469 virtual ~__shared_count();
3471 virtual void __on_zero_shared() _NOEXCEPT = 0;
3474 _LIBCPP_INLINE_VISIBILITY
3475 explicit __shared_count(long __refs = 0) _NOEXCEPT
3476 : __shared_owners_(__refs) {}
3478 #if defined(_LIBCPP_BUILDING_MEMORY) && \
3479 defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS)
3480 void __add_shared() _NOEXCEPT;
3481 bool __release_shared() _NOEXCEPT;
3483 _LIBCPP_INLINE_VISIBILITY
3484 void __add_shared() _NOEXCEPT {
3485 __libcpp_atomic_refcount_increment(__shared_owners_);
3487 _LIBCPP_INLINE_VISIBILITY
3488 bool __release_shared() _NOEXCEPT {
3489 if (__libcpp_atomic_refcount_decrement(__shared_owners_) == -1) {
3496 _LIBCPP_INLINE_VISIBILITY
3497 long use_count() const _NOEXCEPT {
3498 return __libcpp_relaxed_load(&__shared_owners_) + 1;
3502 class _LIBCPP_TYPE_VIS __shared_weak_count
3503 : private __shared_count
3505 long __shared_weak_owners_;
3508 _LIBCPP_INLINE_VISIBILITY
3509 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT
3510 : __shared_count(__refs),
3511 __shared_weak_owners_(__refs) {}
3513 virtual ~__shared_weak_count();
3516 #if defined(_LIBCPP_BUILDING_MEMORY) && \
3517 defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS)
3518 void __add_shared() _NOEXCEPT;
3519 void __add_weak() _NOEXCEPT;
3520 void __release_shared() _NOEXCEPT;
3522 _LIBCPP_INLINE_VISIBILITY
3523 void __add_shared() _NOEXCEPT {
3524 __shared_count::__add_shared();
3526 _LIBCPP_INLINE_VISIBILITY
3527 void __add_weak() _NOEXCEPT {
3528 __libcpp_atomic_refcount_increment(__shared_weak_owners_);
3530 _LIBCPP_INLINE_VISIBILITY
3531 void __release_shared() _NOEXCEPT {
3532 if (__shared_count::__release_shared())
3536 void __release_weak() _NOEXCEPT;
3537 _LIBCPP_INLINE_VISIBILITY
3538 long use_count() const _NOEXCEPT {return __shared_count::use_count();}
3539 __shared_weak_count* lock() _NOEXCEPT;
3541 // Define the function out only if we build static libc++ without RTTI.
3542 // Otherwise we may break clients who need to compile their projects with
3543 // -fno-rtti and yet link against a libc++.dylib compiled
3544 // without -fno-rtti.
3545 #if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC)
3546 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT;
3549 virtual void __on_zero_shared_weak() _NOEXCEPT = 0;
3552 template <class _Tp, class _Dp, class _Alloc>
3553 class __shared_ptr_pointer
3554 : public __shared_weak_count
3556 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_;
3558 _LIBCPP_INLINE_VISIBILITY
3559 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a)
3560 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {}
3562 #ifndef _LIBCPP_NO_RTTI
3563 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT;
3567 virtual void __on_zero_shared() _NOEXCEPT;
3568 virtual void __on_zero_shared_weak() _NOEXCEPT;
3571 #ifndef _LIBCPP_NO_RTTI
3573 template <class _Tp, class _Dp, class _Alloc>
3575 __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT
3577 return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : nullptr;
3580 #endif // _LIBCPP_NO_RTTI
3582 template <class _Tp, class _Dp, class _Alloc>
3584 __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT
3586 __data_.first().second()(__data_.first().first());
3587 __data_.first().second().~_Dp();
3590 template <class _Tp, class _Dp, class _Alloc>
3592 __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT
3594 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al;
3595 typedef allocator_traits<_Al> _ATraits;
3596 typedef pointer_traits<typename _ATraits::pointer> _PTraits;
3598 _Al __a(__data_.second());
3599 __data_.second().~_Alloc();
3600 __a.deallocate(_PTraits::pointer_to(*this), 1);
3603 template <class _Tp, class _Alloc>
3604 class __shared_ptr_emplace
3605 : public __shared_weak_count
3607 __compressed_pair<_Alloc, _Tp> __data_;
3609 #ifndef _LIBCPP_HAS_NO_VARIADICS
3611 _LIBCPP_INLINE_VISIBILITY
3612 __shared_ptr_emplace(_Alloc __a)
3613 : __data_(_VSTD::move(__a)) {}
3615 template <class ..._Args>
3616 _LIBCPP_INLINE_VISIBILITY
3617 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args)
3618 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a),
3619 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {}
3621 #else // _LIBCPP_HAS_NO_VARIADICS
3623 _LIBCPP_INLINE_VISIBILITY
3624 __shared_ptr_emplace(_Alloc __a)
3627 template <class _A0>
3628 _LIBCPP_INLINE_VISIBILITY
3629 __shared_ptr_emplace(_Alloc __a, _A0& __a0)
3630 : __data_(__a, _Tp(__a0)) {}
3632 template <class _A0, class _A1>
3633 _LIBCPP_INLINE_VISIBILITY
3634 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1)
3635 : __data_(__a, _Tp(__a0, __a1)) {}
3637 template <class _A0, class _A1, class _A2>
3638 _LIBCPP_INLINE_VISIBILITY
3639 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2)
3640 : __data_(__a, _Tp(__a0, __a1, __a2)) {}
3642 #endif // _LIBCPP_HAS_NO_VARIADICS
3645 virtual void __on_zero_shared() _NOEXCEPT;
3646 virtual void __on_zero_shared_weak() _NOEXCEPT;
3648 _LIBCPP_INLINE_VISIBILITY
3649 _Tp* get() _NOEXCEPT {return &__data_.second();}
3652 template <class _Tp, class _Alloc>
3654 __shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT
3656 __data_.second().~_Tp();
3659 template <class _Tp, class _Alloc>
3661 __shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT
3663 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type _Al;
3664 typedef allocator_traits<_Al> _ATraits;
3665 typedef pointer_traits<typename _ATraits::pointer> _PTraits;
3666 _Al __a(__data_.first());
3667 __data_.first().~_Alloc();
3668 __a.deallocate(_PTraits::pointer_to(*this), 1);
3671 struct __shared_ptr_dummy_rebind_allocator_type;
3673 class _LIBCPP_TEMPLATE_VIS allocator<__shared_ptr_dummy_rebind_allocator_type>
3676 template <class _Other>
3679 typedef allocator<_Other> other;
3683 template<class _Tp> class _LIBCPP_TEMPLATE_VIS enable_shared_from_this;
3686 class _LIBCPP_TEMPLATE_VIS shared_ptr
3689 typedef _Tp element_type;
3691 #if _LIBCPP_STD_VER > 14
3692 typedef weak_ptr<_Tp> weak_type;
3695 element_type* __ptr_;
3696 __shared_weak_count* __cntrl_;
3698 struct __nat {int __for_bool_;};
3700 _LIBCPP_INLINE_VISIBILITY
3701 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT;
3702 _LIBCPP_INLINE_VISIBILITY
3703 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT;
3705 explicit shared_ptr(_Yp* __p,
3706 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3707 template<class _Yp, class _Dp>
3708 shared_ptr(_Yp* __p, _Dp __d,
3709 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3710 template<class _Yp, class _Dp, class _Alloc>
3711 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a,
3712 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3713 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d);
3714 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a);
3715 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT;
3716 _LIBCPP_INLINE_VISIBILITY
3717 shared_ptr(const shared_ptr& __r) _NOEXCEPT;
3719 _LIBCPP_INLINE_VISIBILITY
3720 shared_ptr(const shared_ptr<_Yp>& __r,
3721 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat())
3723 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3724 _LIBCPP_INLINE_VISIBILITY
3725 shared_ptr(shared_ptr&& __r) _NOEXCEPT;
3726 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(shared_ptr<_Yp>&& __r,
3727 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat())
3729 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3730 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r,
3731 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type= __nat());
3732 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
3733 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3735 shared_ptr(auto_ptr<_Yp>&& __r,
3736 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3739 shared_ptr(auto_ptr<_Yp> __r,
3740 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3743 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3744 template <class _Yp, class _Dp>
3745 shared_ptr(unique_ptr<_Yp, _Dp>&&,
3748 !is_lvalue_reference<_Dp>::value &&
3749 !is_array<_Yp>::value &&
3750 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3753 template <class _Yp, class _Dp>
3754 shared_ptr(unique_ptr<_Yp, _Dp>&&,
3757 is_lvalue_reference<_Dp>::value &&
3758 !is_array<_Yp>::value &&
3759 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3762 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3763 template <class _Yp, class _Dp>
3764 shared_ptr(unique_ptr<_Yp, _Dp>,
3767 !is_lvalue_reference<_Dp>::value &&
3768 !is_array<_Yp>::value &&
3769 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3772 template <class _Yp, class _Dp>
3773 shared_ptr(unique_ptr<_Yp, _Dp>,
3776 is_lvalue_reference<_Dp>::value &&
3777 !is_array<_Yp>::value &&
3778 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3781 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3785 _LIBCPP_INLINE_VISIBILITY
3786 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT;
3790 is_convertible<_Yp*, element_type*>::value,
3793 _LIBCPP_INLINE_VISIBILITY
3794 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT;
3795 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3796 _LIBCPP_INLINE_VISIBILITY
3797 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT;
3801 is_convertible<_Yp*, element_type*>::value,
3804 _LIBCPP_INLINE_VISIBILITY
3805 operator=(shared_ptr<_Yp>&& __r);
3806 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
3808 _LIBCPP_INLINE_VISIBILITY
3811 !is_array<_Yp>::value &&
3812 is_convertible<_Yp*, element_type*>::value,
3815 operator=(auto_ptr<_Yp>&& __r);
3817 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3818 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
3820 _LIBCPP_INLINE_VISIBILITY
3823 !is_array<_Yp>::value &&
3824 is_convertible<_Yp*, element_type*>::value,
3827 operator=(auto_ptr<_Yp> __r);
3830 template <class _Yp, class _Dp>
3833 !is_array<_Yp>::value &&
3834 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3837 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3838 _LIBCPP_INLINE_VISIBILITY
3839 operator=(unique_ptr<_Yp, _Dp>&& __r);
3840 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3841 _LIBCPP_INLINE_VISIBILITY
3842 operator=(unique_ptr<_Yp, _Dp> __r);
3845 _LIBCPP_INLINE_VISIBILITY
3846 void swap(shared_ptr& __r) _NOEXCEPT;
3847 _LIBCPP_INLINE_VISIBILITY
3848 void reset() _NOEXCEPT;
3852 is_convertible<_Yp*, element_type*>::value,
3855 _LIBCPP_INLINE_VISIBILITY
3857 template<class _Yp, class _Dp>
3860 is_convertible<_Yp*, element_type*>::value,
3863 _LIBCPP_INLINE_VISIBILITY
3864 reset(_Yp* __p, _Dp __d);
3865 template<class _Yp, class _Dp, class _Alloc>
3868 is_convertible<_Yp*, element_type*>::value,
3871 _LIBCPP_INLINE_VISIBILITY
3872 reset(_Yp* __p, _Dp __d, _Alloc __a);
3874 _LIBCPP_INLINE_VISIBILITY
3875 element_type* get() const _NOEXCEPT {return __ptr_;}
3876 _LIBCPP_INLINE_VISIBILITY
3877 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT
3879 _LIBCPP_INLINE_VISIBILITY
3880 element_type* operator->() const _NOEXCEPT {return __ptr_;}
3881 _LIBCPP_INLINE_VISIBILITY
3882 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;}
3883 _LIBCPP_INLINE_VISIBILITY
3884 bool unique() const _NOEXCEPT {return use_count() == 1;}
3885 _LIBCPP_INLINE_VISIBILITY
3886 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;}
3887 template <class _Up>
3888 _LIBCPP_INLINE_VISIBILITY
3889 bool owner_before(shared_ptr<_Up> const& __p) const _NOEXCEPT
3890 {return __cntrl_ < __p.__cntrl_;}
3891 template <class _Up>
3892 _LIBCPP_INLINE_VISIBILITY
3893 bool owner_before(weak_ptr<_Up> const& __p) const _NOEXCEPT
3894 {return __cntrl_ < __p.__cntrl_;}
3895 _LIBCPP_INLINE_VISIBILITY
3897 __owner_equivalent(const shared_ptr& __p) const
3898 {return __cntrl_ == __p.__cntrl_;}
3900 #ifndef _LIBCPP_NO_RTTI
3901 template <class _Dp>
3902 _LIBCPP_INLINE_VISIBILITY
3903 _Dp* __get_deleter() const _NOEXCEPT
3904 {return static_cast<_Dp*>(__cntrl_
3905 ? const_cast<void *>(__cntrl_->__get_deleter(typeid(_Dp)))
3907 #endif // _LIBCPP_NO_RTTI
3909 #ifndef _LIBCPP_HAS_NO_VARIADICS
3911 template<class ..._Args>
3914 make_shared(_Args&& ...__args);
3916 template<class _Alloc, class ..._Args>
3919 allocate_shared(const _Alloc& __a, _Args&& ...__args);
3921 #else // _LIBCPP_HAS_NO_VARIADICS
3923 static shared_ptr<_Tp> make_shared();
3926 static shared_ptr<_Tp> make_shared(_A0&);
3928 template<class _A0, class _A1>
3929 static shared_ptr<_Tp> make_shared(_A0&, _A1&);
3931 template<class _A0, class _A1, class _A2>
3932 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&);
3934 template<class _Alloc>
3935 static shared_ptr<_Tp>
3936 allocate_shared(const _Alloc& __a);
3938 template<class _Alloc, class _A0>
3939 static shared_ptr<_Tp>
3940 allocate_shared(const _Alloc& __a, _A0& __a0);
3942 template<class _Alloc, class _A0, class _A1>
3943 static shared_ptr<_Tp>
3944 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1);
3946 template<class _Alloc, class _A0, class _A1, class _A2>
3947 static shared_ptr<_Tp>
3948 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2);
3950 #endif // _LIBCPP_HAS_NO_VARIADICS
3953 template <class _Yp, bool = is_function<_Yp>::value>
3954 struct __shared_ptr_default_allocator
3956 typedef allocator<_Yp> type;
3959 template <class _Yp>
3960 struct __shared_ptr_default_allocator<_Yp, true>
3962 typedef allocator<__shared_ptr_dummy_rebind_allocator_type> type;
3965 template <class _Yp, class _OrigPtr>
3966 _LIBCPP_INLINE_VISIBILITY
3967 typename enable_if<is_convertible<_OrigPtr*,
3968 const enable_shared_from_this<_Yp>*
3971 __enable_weak_this(const enable_shared_from_this<_Yp>* __e,
3972 _OrigPtr* __ptr) _NOEXCEPT
3974 typedef typename remove_cv<_Yp>::type _RawYp;
3975 if (__e && __e->__weak_this_.expired())
3977 __e->__weak_this_ = shared_ptr<_RawYp>(*this,
3978 const_cast<_RawYp*>(static_cast<const _Yp*>(__ptr)));
3982 _LIBCPP_INLINE_VISIBILITY void __enable_weak_this(...) _NOEXCEPT {}
3984 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr;
3985 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr;
3992 shared_ptr<_Tp>::shared_ptr() _NOEXCEPT
4001 shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT
4009 shared_ptr<_Tp>::shared_ptr(_Yp* __p,
4010 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4013 unique_ptr<_Yp> __hold(__p);
4014 typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
4015 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, _AllocT > _CntrlBlk;
4016 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), _AllocT());
4018 __enable_weak_this(__p, __p);
4022 template<class _Yp, class _Dp>
4023 shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d,
4024 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4027 #ifndef _LIBCPP_NO_EXCEPTIONS
4030 #endif // _LIBCPP_NO_EXCEPTIONS
4031 typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
4032 typedef __shared_ptr_pointer<_Yp*, _Dp, _AllocT > _CntrlBlk;
4033 __cntrl_ = new _CntrlBlk(__p, __d, _AllocT());
4034 __enable_weak_this(__p, __p);
4035 #ifndef _LIBCPP_NO_EXCEPTIONS
4042 #endif // _LIBCPP_NO_EXCEPTIONS
4047 shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d)
4050 #ifndef _LIBCPP_NO_EXCEPTIONS
4053 #endif // _LIBCPP_NO_EXCEPTIONS
4054 typedef typename __shared_ptr_default_allocator<_Tp>::type _AllocT;
4055 typedef __shared_ptr_pointer<nullptr_t, _Dp, _AllocT > _CntrlBlk;
4056 __cntrl_ = new _CntrlBlk(__p, __d, _AllocT());
4057 #ifndef _LIBCPP_NO_EXCEPTIONS
4064 #endif // _LIBCPP_NO_EXCEPTIONS
4068 template<class _Yp, class _Dp, class _Alloc>
4069 shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a,
4070 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4073 #ifndef _LIBCPP_NO_EXCEPTIONS
4076 #endif // _LIBCPP_NO_EXCEPTIONS
4077 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk;
4078 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
4079 typedef __allocator_destructor<_A2> _D2;
4081 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4082 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4083 _CntrlBlk(__p, __d, __a);
4084 __cntrl_ = _VSTD::addressof(*__hold2.release());
4085 __enable_weak_this(__p, __p);
4086 #ifndef _LIBCPP_NO_EXCEPTIONS
4093 #endif // _LIBCPP_NO_EXCEPTIONS
4097 template<class _Dp, class _Alloc>
4098 shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a)
4101 #ifndef _LIBCPP_NO_EXCEPTIONS
4104 #endif // _LIBCPP_NO_EXCEPTIONS
4105 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk;
4106 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
4107 typedef __allocator_destructor<_A2> _D2;
4109 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4110 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4111 _CntrlBlk(__p, __d, __a);
4112 __cntrl_ = _VSTD::addressof(*__hold2.release());
4113 #ifndef _LIBCPP_NO_EXCEPTIONS
4120 #endif // _LIBCPP_NO_EXCEPTIONS
4126 shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT
4128 __cntrl_(__r.__cntrl_)
4131 __cntrl_->__add_shared();
4136 shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT
4137 : __ptr_(__r.__ptr_),
4138 __cntrl_(__r.__cntrl_)
4141 __cntrl_->__add_shared();
4147 shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r,
4148 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4150 : __ptr_(__r.__ptr_),
4151 __cntrl_(__r.__cntrl_)
4154 __cntrl_->__add_shared();
4157 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4161 shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT
4162 : __ptr_(__r.__ptr_),
4163 __cntrl_(__r.__cntrl_)
4172 shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r,
4173 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4175 : __ptr_(__r.__ptr_),
4176 __cntrl_(__r.__cntrl_)
4182 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4184 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
4187 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4188 shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r,
4190 shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r,
4192 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4195 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk;
4196 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>());
4197 __enable_weak_this(__r.get(), __r.get());
4203 template <class _Yp, class _Dp>
4204 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4205 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r,
4207 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r,
4211 !is_lvalue_reference<_Dp>::value &&
4212 !is_array<_Yp>::value &&
4213 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
4218 #if _LIBCPP_STD_VER > 11
4219 if (__ptr_ == nullptr)
4224 typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
4225 typedef __shared_ptr_pointer<_Yp*, _Dp, _AllocT > _CntrlBlk;
4226 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), _AllocT());
4227 __enable_weak_this(__r.get(), __r.get());
4233 template <class _Yp, class _Dp>
4234 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4235 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r,
4237 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r,
4241 is_lvalue_reference<_Dp>::value &&
4242 !is_array<_Yp>::value &&
4243 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
4248 #if _LIBCPP_STD_VER > 11
4249 if (__ptr_ == nullptr)
4254 typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
4255 typedef __shared_ptr_pointer<_Yp*,
4256 reference_wrapper<typename remove_reference<_Dp>::type>,
4257 _AllocT > _CntrlBlk;
4258 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), _AllocT());
4259 __enable_weak_this(__r.get(), __r.get());
4264 #ifndef _LIBCPP_HAS_NO_VARIADICS
4267 template<class ..._Args>
4269 shared_ptr<_Tp>::make_shared(_Args&& ...__args)
4271 static_assert( is_constructible<_Tp, _Args...>::value, "Can't construct object in make_shared" );
4272 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4273 typedef allocator<_CntrlBlk> _A2;
4274 typedef __allocator_destructor<_A2> _D2;
4276 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4277 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...);
4278 shared_ptr<_Tp> __r;
4279 __r.__ptr_ = __hold2.get()->get();
4280 __r.__cntrl_ = __hold2.release();
4281 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4286 template<class _Alloc, class ..._Args>
4288 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args)
4290 static_assert( is_constructible<_Tp, _Args...>::value, "Can't construct object in allocate_shared" );
4291 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4292 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
4293 typedef __allocator_destructor<_A2> _D2;
4295 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4296 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4297 _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...);
4298 shared_ptr<_Tp> __r;
4299 __r.__ptr_ = __hold2.get()->get();
4300 __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4301 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4305 #else // _LIBCPP_HAS_NO_VARIADICS
4309 shared_ptr<_Tp>::make_shared()
4311 static_assert((is_constructible<_Tp>::value), "Can't construct object in make_shared" );
4312 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4313 typedef allocator<_CntrlBlk> _Alloc2;
4314 typedef __allocator_destructor<_Alloc2> _D2;
4316 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4317 ::new(__hold2.get()) _CntrlBlk(__alloc2);
4318 shared_ptr<_Tp> __r;
4319 __r.__ptr_ = __hold2.get()->get();
4320 __r.__cntrl_ = __hold2.release();
4321 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4328 shared_ptr<_Tp>::make_shared(_A0& __a0)
4330 static_assert((is_constructible<_Tp, _A0>::value), "Can't construct object in make_shared" );
4331 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4332 typedef allocator<_CntrlBlk> _Alloc2;
4333 typedef __allocator_destructor<_Alloc2> _D2;
4335 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4336 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0);
4337 shared_ptr<_Tp> __r;
4338 __r.__ptr_ = __hold2.get()->get();
4339 __r.__cntrl_ = __hold2.release();
4340 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4345 template<class _A0, class _A1>
4347 shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1)
4349 static_assert((is_constructible<_Tp, _A0, _A1>::value), "Can't construct object in make_shared" );
4350 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4351 typedef allocator<_CntrlBlk> _Alloc2;
4352 typedef __allocator_destructor<_Alloc2> _D2;
4354 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4355 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1);
4356 shared_ptr<_Tp> __r;
4357 __r.__ptr_ = __hold2.get()->get();
4358 __r.__cntrl_ = __hold2.release();
4359 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4364 template<class _A0, class _A1, class _A2>
4366 shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2)
4368 static_assert((is_constructible<_Tp, _A0, _A1, _A2>::value), "Can't construct object in make_shared" );
4369 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4370 typedef allocator<_CntrlBlk> _Alloc2;
4371 typedef __allocator_destructor<_Alloc2> _D2;
4373 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4374 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2);
4375 shared_ptr<_Tp> __r;
4376 __r.__ptr_ = __hold2.get()->get();
4377 __r.__cntrl_ = __hold2.release();
4378 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4383 template<class _Alloc>
4385 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a)
4387 static_assert((is_constructible<_Tp>::value), "Can't construct object in allocate_shared" );
4388 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4389 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4390 typedef __allocator_destructor<_Alloc2> _D2;
4391 _Alloc2 __alloc2(__a);
4392 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4393 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4395 shared_ptr<_Tp> __r;
4396 __r.__ptr_ = __hold2.get()->get();
4397 __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4398 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4403 template<class _Alloc, class _A0>
4405 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0)
4407 static_assert((is_constructible<_Tp, _A0>::value), "Can't construct object in allocate_shared" );
4408 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4409 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4410 typedef __allocator_destructor<_Alloc2> _D2;
4411 _Alloc2 __alloc2(__a);
4412 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4413 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4414 _CntrlBlk(__a, __a0);
4415 shared_ptr<_Tp> __r;
4416 __r.__ptr_ = __hold2.get()->get();
4417 __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4418 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4423 template<class _Alloc, class _A0, class _A1>
4425 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1)
4427 static_assert((is_constructible<_Tp, _A0, _A1>::value), "Can't construct object in allocate_shared" );
4428 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4429 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4430 typedef __allocator_destructor<_Alloc2> _D2;
4431 _Alloc2 __alloc2(__a);
4432 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4433 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4434 _CntrlBlk(__a, __a0, __a1);
4435 shared_ptr<_Tp> __r;
4436 __r.__ptr_ = __hold2.get()->get();
4437 __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4438 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4443 template<class _Alloc, class _A0, class _A1, class _A2>
4445 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2)
4447 static_assert((is_constructible<_Tp, _A0, _A1, _A2>::value), "Can't construct object in allocate_shared" );
4448 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4449 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4450 typedef __allocator_destructor<_Alloc2> _D2;
4451 _Alloc2 __alloc2(__a);
4452 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4453 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4454 _CntrlBlk(__a, __a0, __a1, __a2);
4455 shared_ptr<_Tp> __r;
4456 __r.__ptr_ = __hold2.get()->get();
4457 __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4458 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4462 #endif // _LIBCPP_HAS_NO_VARIADICS
4465 shared_ptr<_Tp>::~shared_ptr()
4468 __cntrl_->__release_shared();
4474 shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT
4476 shared_ptr(__r).swap(*this);
4485 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4488 shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT
4490 shared_ptr(__r).swap(*this);
4494 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4499 shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT
4501 shared_ptr(_VSTD::move(__r)).swap(*this);
4510 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4513 shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r)
4515 shared_ptr(_VSTD::move(__r)).swap(*this);
4519 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
4525 !is_array<_Yp>::value &&
4526 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4529 shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r)
4531 shared_ptr(_VSTD::move(__r)).swap(*this);
4537 template <class _Yp, class _Dp>
4541 !is_array<_Yp>::value &&
4542 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer,
4543 typename shared_ptr<_Tp>::element_type*>::value,
4546 shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r)
4548 shared_ptr(_VSTD::move(__r)).swap(*this);
4552 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4554 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
4557 inline _LIBCPP_INLINE_VISIBILITY
4560 !is_array<_Yp>::value &&
4561 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4564 shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r)
4566 shared_ptr(__r).swap(*this);
4572 template <class _Yp, class _Dp>
4573 inline _LIBCPP_INLINE_VISIBILITY
4576 !is_array<_Yp>::value &&
4577 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer,
4578 typename shared_ptr<_Tp>::element_type*>::value,
4581 shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r)
4583 shared_ptr(_VSTD::move(__r)).swap(*this);
4587 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4592 shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT
4594 _VSTD::swap(__ptr_, __r.__ptr_);
4595 _VSTD::swap(__cntrl_, __r.__cntrl_);
4601 shared_ptr<_Tp>::reset() _NOEXCEPT
4603 shared_ptr().swap(*this);
4611 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4614 shared_ptr<_Tp>::reset(_Yp* __p)
4616 shared_ptr(__p).swap(*this);
4620 template<class _Yp, class _Dp>
4624 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4627 shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d)
4629 shared_ptr(__p, __d).swap(*this);
4633 template<class _Yp, class _Dp, class _Alloc>
4637 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
4640 shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a)
4642 shared_ptr(__p, __d, __a).swap(*this);
4645 #ifndef _LIBCPP_HAS_NO_VARIADICS
4647 template<class _Tp, class ..._Args>
4648 inline _LIBCPP_INLINE_VISIBILITY
4651 !is_array<_Tp>::value,
4654 make_shared(_Args&& ...__args)
4656 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...);
4659 template<class _Tp, class _Alloc, class ..._Args>
4660 inline _LIBCPP_INLINE_VISIBILITY
4663 !is_array<_Tp>::value,
4666 allocate_shared(const _Alloc& __a, _Args&& ...__args)
4668 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...);
4671 #else // _LIBCPP_HAS_NO_VARIADICS
4674 inline _LIBCPP_INLINE_VISIBILITY
4678 return shared_ptr<_Tp>::make_shared();
4681 template<class _Tp, class _A0>
4682 inline _LIBCPP_INLINE_VISIBILITY
4684 make_shared(_A0& __a0)
4686 return shared_ptr<_Tp>::make_shared(__a0);
4689 template<class _Tp, class _A0, class _A1>
4690 inline _LIBCPP_INLINE_VISIBILITY
4692 make_shared(_A0& __a0, _A1& __a1)
4694 return shared_ptr<_Tp>::make_shared(__a0, __a1);
4697 template<class _Tp, class _A0, class _A1, class _A2>
4698 inline _LIBCPP_INLINE_VISIBILITY
4700 make_shared(_A0& __a0, _A1& __a1, _A2& __a2)
4702 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2);
4705 template<class _Tp, class _Alloc>
4706 inline _LIBCPP_INLINE_VISIBILITY
4708 allocate_shared(const _Alloc& __a)
4710 return shared_ptr<_Tp>::allocate_shared(__a);
4713 template<class _Tp, class _Alloc, class _A0>
4714 inline _LIBCPP_INLINE_VISIBILITY
4716 allocate_shared(const _Alloc& __a, _A0& __a0)
4718 return shared_ptr<_Tp>::allocate_shared(__a, __a0);
4721 template<class _Tp, class _Alloc, class _A0, class _A1>
4722 inline _LIBCPP_INLINE_VISIBILITY
4724 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1)
4726 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1);
4729 template<class _Tp, class _Alloc, class _A0, class _A1, class _A2>
4730 inline _LIBCPP_INLINE_VISIBILITY
4732 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2)
4734 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2);
4737 #endif // _LIBCPP_HAS_NO_VARIADICS
4739 template<class _Tp, class _Up>
4740 inline _LIBCPP_INLINE_VISIBILITY
4742 operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4744 return __x.get() == __y.get();
4747 template<class _Tp, class _Up>
4748 inline _LIBCPP_INLINE_VISIBILITY
4750 operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4752 return !(__x == __y);
4755 template<class _Tp, class _Up>
4756 inline _LIBCPP_INLINE_VISIBILITY
4758 operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4760 typedef typename common_type<_Tp*, _Up*>::type _Vp;
4761 return less<_Vp>()(__x.get(), __y.get());
4764 template<class _Tp, class _Up>
4765 inline _LIBCPP_INLINE_VISIBILITY
4767 operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4772 template<class _Tp, class _Up>
4773 inline _LIBCPP_INLINE_VISIBILITY
4775 operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4777 return !(__y < __x);
4780 template<class _Tp, class _Up>
4781 inline _LIBCPP_INLINE_VISIBILITY
4783 operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4785 return !(__x < __y);
4789 inline _LIBCPP_INLINE_VISIBILITY
4791 operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4797 inline _LIBCPP_INLINE_VISIBILITY
4799 operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4805 inline _LIBCPP_INLINE_VISIBILITY
4807 operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4809 return static_cast<bool>(__x);
4813 inline _LIBCPP_INLINE_VISIBILITY
4815 operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4817 return static_cast<bool>(__x);
4821 inline _LIBCPP_INLINE_VISIBILITY
4823 operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4825 return less<_Tp*>()(__x.get(), nullptr);
4829 inline _LIBCPP_INLINE_VISIBILITY
4831 operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4833 return less<_Tp*>()(nullptr, __x.get());
4837 inline _LIBCPP_INLINE_VISIBILITY
4839 operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4841 return nullptr < __x;
4845 inline _LIBCPP_INLINE_VISIBILITY
4847 operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4849 return __x < nullptr;
4853 inline _LIBCPP_INLINE_VISIBILITY
4855 operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4857 return !(nullptr < __x);
4861 inline _LIBCPP_INLINE_VISIBILITY
4863 operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4865 return !(__x < nullptr);
4869 inline _LIBCPP_INLINE_VISIBILITY
4871 operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4873 return !(__x < nullptr);
4877 inline _LIBCPP_INLINE_VISIBILITY
4879 operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4881 return !(nullptr < __x);
4885 inline _LIBCPP_INLINE_VISIBILITY
4887 swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT
4892 template<class _Tp, class _Up>
4893 inline _LIBCPP_INLINE_VISIBILITY
4896 !is_array<_Tp>::value && !is_array<_Up>::value,
4899 static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
4901 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get()));
4904 template<class _Tp, class _Up>
4905 inline _LIBCPP_INLINE_VISIBILITY
4908 !is_array<_Tp>::value && !is_array<_Up>::value,
4911 dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
4913 _Tp* __p = dynamic_cast<_Tp*>(__r.get());
4914 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>();
4917 template<class _Tp, class _Up>
4920 is_array<_Tp>::value == is_array<_Up>::value,
4923 const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
4925 typedef typename remove_extent<_Tp>::type _RTp;
4926 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get()));
4929 #ifndef _LIBCPP_NO_RTTI
4931 template<class _Dp, class _Tp>
4932 inline _LIBCPP_INLINE_VISIBILITY
4934 get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT
4936 return __p.template __get_deleter<_Dp>();
4939 #endif // _LIBCPP_NO_RTTI
4942 class _LIBCPP_TEMPLATE_VIS weak_ptr
4945 typedef _Tp element_type;
4947 element_type* __ptr_;
4948 __shared_weak_count* __cntrl_;
4951 _LIBCPP_INLINE_VISIBILITY
4952 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT;
4953 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r,
4954 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
4956 _LIBCPP_INLINE_VISIBILITY
4957 weak_ptr(weak_ptr const& __r) _NOEXCEPT;
4958 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r,
4959 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
4962 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4963 _LIBCPP_INLINE_VISIBILITY
4964 weak_ptr(weak_ptr&& __r) _NOEXCEPT;
4965 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r,
4966 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
4968 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4971 _LIBCPP_INLINE_VISIBILITY
4972 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT;
4976 is_convertible<_Yp*, element_type*>::value,
4979 _LIBCPP_INLINE_VISIBILITY
4980 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT;
4982 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4984 _LIBCPP_INLINE_VISIBILITY
4985 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT;
4989 is_convertible<_Yp*, element_type*>::value,
4992 _LIBCPP_INLINE_VISIBILITY
4993 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT;
4995 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
5000 is_convertible<_Yp*, element_type*>::value,
5003 _LIBCPP_INLINE_VISIBILITY
5004 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT;
5006 _LIBCPP_INLINE_VISIBILITY
5007 void swap(weak_ptr& __r) _NOEXCEPT;
5008 _LIBCPP_INLINE_VISIBILITY
5009 void reset() _NOEXCEPT;
5011 _LIBCPP_INLINE_VISIBILITY
5012 long use_count() const _NOEXCEPT
5013 {return __cntrl_ ? __cntrl_->use_count() : 0;}
5014 _LIBCPP_INLINE_VISIBILITY
5015 bool expired() const _NOEXCEPT
5016 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;}
5017 shared_ptr<_Tp> lock() const _NOEXCEPT;
5019 _LIBCPP_INLINE_VISIBILITY
5020 bool owner_before(const shared_ptr<_Up>& __r) const _NOEXCEPT
5021 {return __cntrl_ < __r.__cntrl_;}
5023 _LIBCPP_INLINE_VISIBILITY
5024 bool owner_before(const weak_ptr<_Up>& __r) const _NOEXCEPT
5025 {return __cntrl_ < __r.__cntrl_;}
5027 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr;
5028 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr;
5034 weak_ptr<_Tp>::weak_ptr() _NOEXCEPT
5042 weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT
5043 : __ptr_(__r.__ptr_),
5044 __cntrl_(__r.__cntrl_)
5047 __cntrl_->__add_weak();
5053 weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r,
5054 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
5056 : __ptr_(__r.__ptr_),
5057 __cntrl_(__r.__cntrl_)
5060 __cntrl_->__add_weak();
5066 weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r,
5067 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
5069 : __ptr_(__r.__ptr_),
5070 __cntrl_(__r.__cntrl_)
5073 __cntrl_->__add_weak();
5076 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
5080 weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT
5081 : __ptr_(__r.__ptr_),
5082 __cntrl_(__r.__cntrl_)
5091 weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r,
5092 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
5094 : __ptr_(__r.__ptr_),
5095 __cntrl_(__r.__cntrl_)
5101 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
5104 weak_ptr<_Tp>::~weak_ptr()
5107 __cntrl_->__release_weak();
5113 weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT
5115 weak_ptr(__r).swap(*this);
5124 is_convertible<_Yp*, _Tp*>::value,
5127 weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT
5129 weak_ptr(__r).swap(*this);
5133 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
5138 weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT
5140 weak_ptr(_VSTD::move(__r)).swap(*this);
5149 is_convertible<_Yp*, _Tp*>::value,
5152 weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT
5154 weak_ptr(_VSTD::move(__r)).swap(*this);
5158 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
5165 is_convertible<_Yp*, _Tp*>::value,
5168 weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT
5170 weak_ptr(__r).swap(*this);
5177 weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT
5179 _VSTD::swap(__ptr_, __r.__ptr_);
5180 _VSTD::swap(__cntrl_, __r.__cntrl_);
5184 inline _LIBCPP_INLINE_VISIBILITY
5186 swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT
5194 weak_ptr<_Tp>::reset() _NOEXCEPT
5196 weak_ptr().swap(*this);
5201 shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r,
5202 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
5203 : __ptr_(__r.__ptr_),
5204 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_)
5207 __throw_bad_weak_ptr();
5212 weak_ptr<_Tp>::lock() const _NOEXCEPT
5214 shared_ptr<_Tp> __r;
5215 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_;
5217 __r.__ptr_ = __ptr_;
5221 #if _LIBCPP_STD_VER > 14
5222 template <class _Tp = void> struct owner_less;
5224 template <class _Tp> struct owner_less;
5227 template <class _Tp>
5228 struct _LIBCPP_TEMPLATE_VIS owner_less<shared_ptr<_Tp> >
5229 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool>
5231 typedef bool result_type;
5232 _LIBCPP_INLINE_VISIBILITY
5233 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
5234 {return __x.owner_before(__y);}
5235 _LIBCPP_INLINE_VISIBILITY
5236 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT
5237 {return __x.owner_before(__y);}
5238 _LIBCPP_INLINE_VISIBILITY
5239 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
5240 {return __x.owner_before(__y);}
5243 template <class _Tp>
5244 struct _LIBCPP_TEMPLATE_VIS owner_less<weak_ptr<_Tp> >
5245 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool>
5247 typedef bool result_type;
5248 _LIBCPP_INLINE_VISIBILITY
5249 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT
5250 {return __x.owner_before(__y);}
5251 _LIBCPP_INLINE_VISIBILITY
5252 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT
5253 {return __x.owner_before(__y);}
5254 _LIBCPP_INLINE_VISIBILITY
5255 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
5256 {return __x.owner_before(__y);}
5259 #if _LIBCPP_STD_VER > 14
5261 struct _LIBCPP_TEMPLATE_VIS owner_less<void>
5263 template <class _Tp, class _Up>
5264 _LIBCPP_INLINE_VISIBILITY
5265 bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT
5266 {return __x.owner_before(__y);}
5267 template <class _Tp, class _Up>
5268 _LIBCPP_INLINE_VISIBILITY
5269 bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const _NOEXCEPT
5270 {return __x.owner_before(__y);}
5271 template <class _Tp, class _Up>
5272 _LIBCPP_INLINE_VISIBILITY
5273 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT
5274 {return __x.owner_before(__y);}
5275 template <class _Tp, class _Up>
5276 _LIBCPP_INLINE_VISIBILITY
5277 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const _NOEXCEPT
5278 {return __x.owner_before(__y);}
5279 typedef void is_transparent;
5284 class _LIBCPP_TEMPLATE_VIS enable_shared_from_this
5286 mutable weak_ptr<_Tp> __weak_this_;
5288 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
5289 enable_shared_from_this() _NOEXCEPT {}
5290 _LIBCPP_INLINE_VISIBILITY
5291 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {}
5292 _LIBCPP_INLINE_VISIBILITY
5293 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT
5295 _LIBCPP_INLINE_VISIBILITY
5296 ~enable_shared_from_this() {}
5298 _LIBCPP_INLINE_VISIBILITY
5299 shared_ptr<_Tp> shared_from_this()
5300 {return shared_ptr<_Tp>(__weak_this_);}
5301 _LIBCPP_INLINE_VISIBILITY
5302 shared_ptr<_Tp const> shared_from_this() const
5303 {return shared_ptr<const _Tp>(__weak_this_);}
5305 #if _LIBCPP_STD_VER > 14
5306 _LIBCPP_INLINE_VISIBILITY
5307 weak_ptr<_Tp> weak_from_this() _NOEXCEPT
5308 { return __weak_this_; }
5310 _LIBCPP_INLINE_VISIBILITY
5311 weak_ptr<const _Tp> weak_from_this() const _NOEXCEPT
5312 { return __weak_this_; }
5313 #endif // _LIBCPP_STD_VER > 14
5315 template <class _Up> friend class shared_ptr;
5318 template <class _Tp>
5319 struct _LIBCPP_TEMPLATE_VIS hash<shared_ptr<_Tp> >
5321 typedef shared_ptr<_Tp> argument_type;
5322 typedef size_t result_type;
5324 _LIBCPP_INLINE_VISIBILITY
5325 result_type operator()(const argument_type& __ptr) const _NOEXCEPT
5327 return hash<_Tp*>()(__ptr.get());
5331 template<class _CharT, class _Traits, class _Yp>
5332 inline _LIBCPP_INLINE_VISIBILITY
5333 basic_ostream<_CharT, _Traits>&
5334 operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p);
5337 #if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
5339 class _LIBCPP_TYPE_VIS __sp_mut
5343 void lock() _NOEXCEPT;
5344 void unlock() _NOEXCEPT;
5347 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT;
5348 __sp_mut(const __sp_mut&);
5349 __sp_mut& operator=(const __sp_mut&);
5351 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*);
5354 _LIBCPP_FUNC_VIS _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5355 __sp_mut& __get_sp_mut(const void*);
5357 template <class _Tp>
5358 inline _LIBCPP_INLINE_VISIBILITY
5360 atomic_is_lock_free(const shared_ptr<_Tp>*)
5365 template <class _Tp>
5366 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5368 atomic_load(const shared_ptr<_Tp>* __p)
5370 __sp_mut& __m = __get_sp_mut(__p);
5372 shared_ptr<_Tp> __q = *__p;
5377 template <class _Tp>
5378 inline _LIBCPP_INLINE_VISIBILITY
5379 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5381 atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order)
5383 return atomic_load(__p);
5386 template <class _Tp>
5387 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5389 atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r)
5391 __sp_mut& __m = __get_sp_mut(__p);
5397 template <class _Tp>
5398 inline _LIBCPP_INLINE_VISIBILITY
5399 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5401 atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order)
5403 atomic_store(__p, __r);
5406 template <class _Tp>
5407 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5409 atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r)
5411 __sp_mut& __m = __get_sp_mut(__p);
5418 template <class _Tp>
5419 inline _LIBCPP_INLINE_VISIBILITY
5420 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5422 atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order)
5424 return atomic_exchange(__p, __r);
5427 template <class _Tp>
5428 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5430 atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w)
5432 shared_ptr<_Tp> __temp;
5433 __sp_mut& __m = __get_sp_mut(__p);
5435 if (__p->__owner_equivalent(*__v))
5437 _VSTD::swap(__temp, *__p);
5442 _VSTD::swap(__temp, *__v);
5448 template <class _Tp>
5449 inline _LIBCPP_INLINE_VISIBILITY
5450 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5452 atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w)
5454 return atomic_compare_exchange_strong(__p, __v, __w);
5457 template <class _Tp>
5458 inline _LIBCPP_INLINE_VISIBILITY
5459 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5461 atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v,
5462 shared_ptr<_Tp> __w, memory_order, memory_order)
5464 return atomic_compare_exchange_strong(__p, __v, __w);
5467 template <class _Tp>
5468 inline _LIBCPP_INLINE_VISIBILITY
5469 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
5471 atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v,
5472 shared_ptr<_Tp> __w, memory_order, memory_order)
5474 return atomic_compare_exchange_weak(__p, __v, __w);
5477 #endif // !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
5480 #if defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE)
5481 # ifndef _LIBCPP_CXX03_LANG
5482 enum class pointer_safety : unsigned char {
5489 struct _LIBCPP_TYPE_VIS pointer_safety
5500 _LIBCPP_INLINE_VISIBILITY
5501 pointer_safety() : __v_() {}
5503 _LIBCPP_INLINE_VISIBILITY
5504 pointer_safety(__lx __v) : __v_(__v) {}
5505 _LIBCPP_INLINE_VISIBILITY
5506 operator int() const {return __v_;}
5510 #if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) && \
5511 defined(_LIBCPP_BUILDING_MEMORY)
5512 _LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT;
5514 // This function is only offered in C++03 under ABI v1.
5515 # if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) || !defined(_LIBCPP_CXX03_LANG)
5516 inline _LIBCPP_INLINE_VISIBILITY
5517 pointer_safety get_pointer_safety() _NOEXCEPT {
5518 return pointer_safety::relaxed;
5524 _LIBCPP_FUNC_VIS void declare_reachable(void* __p);
5525 _LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n);
5526 _LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n);
5527 _LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p);
5529 template <class _Tp>
5530 inline _LIBCPP_INLINE_VISIBILITY
5532 undeclare_reachable(_Tp* __p)
5534 return static_cast<_Tp*>(__undeclare_reachable(__p));
5537 _LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space);
5539 // --- Helper for container swap --
5540 template <typename _Alloc>
5541 inline _LIBCPP_INLINE_VISIBILITY
5542 void __swap_allocator(_Alloc & __a1, _Alloc & __a2)
5543 #if _LIBCPP_STD_VER >= 14
5546 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value)
5549 __swap_allocator(__a1, __a2,
5550 integral_constant<bool, _VSTD::allocator_traits<_Alloc>::propagate_on_container_swap::value>());
5553 template <typename _Alloc>
5554 _LIBCPP_INLINE_VISIBILITY
5555 void __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type)
5556 #if _LIBCPP_STD_VER >= 14
5559 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value)
5566 template <typename _Alloc>
5567 inline _LIBCPP_INLINE_VISIBILITY
5568 void __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {}
5570 template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> >
5571 struct __noexcept_move_assign_container : public integral_constant<bool,
5572 _Traits::propagate_on_container_move_assignment::value
5573 #if _LIBCPP_STD_VER > 14
5574 || _Traits::is_always_equal::value
5576 && is_nothrow_move_assignable<_Alloc>::value
5581 #ifndef _LIBCPP_HAS_NO_VARIADICS
5582 template <class _Tp, class _Alloc>
5583 struct __temp_value {
5584 typedef allocator_traits<_Alloc> _Traits;
5586 typename aligned_storage<sizeof(_Tp), alignof(_Tp)>::type __v;
5589 _Tp *__addr() { return reinterpret_cast<_Tp *>(addressof(__v)); }
5590 _Tp & get() { return *__addr(); }
5592 template<class... _Args>
5593 __temp_value(_Alloc &__alloc, _Args&& ... __args) : __a(__alloc)
5594 { _Traits::construct(__a, __addr(), _VSTD::forward<_Args>(__args)...); }
5596 ~__temp_value() { _Traits::destroy(__a, __addr()); }
5600 _LIBCPP_END_NAMESPACE_STD
5604 #endif // _LIBCPP_MEMORY