1// -*- C++ -*-
2//===-------------------------- memory ------------------------------------===//
3//
4// The LLVM Compiler Infrastructure
5//
6// This file is dual licensed under the MIT and the University of Illinois Open
7// Source Licenses. See LICENSE.TXT for details.
8//
9//===----------------------------------------------------------------------===//
10
11#ifndef _LIBCPP_MEMORY
12#define _LIBCPP_MEMORY
13
14/*
15 memory synopsis
16
17namespace std
18{
19
20struct allocator_arg_t { };
21constexpr allocator_arg_t allocator_arg = allocator_arg_t();
22
23template <class T, class Alloc> struct uses_allocator;
24
25template <class Ptr>
26struct pointer_traits
27{
28 typedef Ptr pointer;
29 typedef <details> element_type;
30 typedef <details> difference_type;
31
32 template <class U> using rebind = <details>;
33
34 static pointer pointer_to(<details>);
35};
36
37template <class T>
38struct pointer_traits<T*>
39{
40 typedef T* pointer;
41 typedef T element_type;
42 typedef ptrdiff_t difference_type;
43
44 template <class U> using rebind = U*;
45
46 static pointer pointer_to(<details>) noexcept;
47};
48
49template <class Alloc>
50struct allocator_traits
51{
52 typedef Alloc allocator_type;
53 typedef typename allocator_type::value_type
54 value_type;
55
56 typedef Alloc::pointer | value_type* pointer;
57 typedef Alloc::const_pointer
58 | pointer_traits<pointer>::rebind<const value_type>
59 const_pointer;
60 typedef Alloc::void_pointer
61 | pointer_traits<pointer>::rebind<void>
62 void_pointer;
63 typedef Alloc::const_void_pointer
64 | pointer_traits<pointer>::rebind<const void>
65 const_void_pointer;
66 typedef Alloc::difference_type
67 | pointer_traits<pointer>::difference_type
68 difference_type;
69 typedef Alloc::size_type
70 | make_unsigned<difference_type>::type
71 size_type;
72 typedef Alloc::propagate_on_container_copy_assignment
73 | false_type propagate_on_container_copy_assignment;
74 typedef Alloc::propagate_on_container_move_assignment
75 | false_type propagate_on_container_move_assignment;
76 typedef Alloc::propagate_on_container_swap
77 | false_type propagate_on_container_swap;
78 typedef Alloc::is_always_equal
79 | is_empty is_always_equal;
80
81 template <class T> using rebind_alloc = Alloc::rebind<U>::other | Alloc<T, Args...>;
82 template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>;
83
84 static pointer allocate(allocator_type& a, size_type n);
85 static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint);
86
87 static void deallocate(allocator_type& a, pointer p, size_type n) noexcept;
88
89 template <class T, class... Args>
90 static void construct(allocator_type& a, T* p, Args&&... args);
91
92 template <class T>
93 static void destroy(allocator_type& a, T* p);
94
95 static size_type max_size(const allocator_type& a); // noexcept in C++14
96
97 static allocator_type
98 select_on_container_copy_construction(const allocator_type& a);
99};
100
101template <>
102class allocator<void>
103{
104public:
105 typedef void* pointer;
106 typedef const void* const_pointer;
107 typedef void value_type;
108
109 template <class _Up> struct rebind {typedef allocator<_Up> other;};
110};
111
112template <class T>
113class allocator
114{
115public:
116 typedef size_t size_type;
117 typedef ptrdiff_t difference_type;
118 typedef T* pointer;
119 typedef const T* const_pointer;
120 typedef typename add_lvalue_reference<T>::type reference;
121 typedef typename add_lvalue_reference<const T>::type const_reference;
122 typedef T value_type;
123
124 template <class U> struct rebind {typedef allocator<U> other;};
125
126 allocator() noexcept;
127 allocator(const allocator&) noexcept;
128 template <class U> allocator(const allocator<U>&) noexcept;
129 ~allocator();
130 pointer address(reference x) const noexcept;
131 const_pointer address(const_reference x) const noexcept;
132 pointer allocate(size_type, allocator<void>::const_pointer hint = 0);
133 void deallocate(pointer p, size_type n) noexcept;
134 size_type max_size() const noexcept;
135 template<class U, class... Args>
136 void construct(U* p, Args&&... args);
137 template <class U>
138 void destroy(U* p);
139};
140
141template <class T, class U>
142bool operator==(const allocator<T>&, const allocator<U>&) noexcept;
143
144template <class T, class U>
145bool operator!=(const allocator<T>&, const allocator<U>&) noexcept;
146
147template <class OutputIterator, class T>
148class raw_storage_iterator
149 : public iterator<output_iterator_tag,
150 T, // purposefully not C++03
151 ptrdiff_t, // purposefully not C++03
152 T*, // purposefully not C++03
153 raw_storage_iterator&> // purposefully not C++03
154{
155public:
156 explicit raw_storage_iterator(OutputIterator x);
157 raw_storage_iterator& operator*();
158 raw_storage_iterator& operator=(const T& element);
159 raw_storage_iterator& operator++();
160 raw_storage_iterator operator++(int);
161};
162
163template <class T> pair<T*,ptrdiff_t> get_temporary_buffer(ptrdiff_t n) noexcept;
164template <class T> void return_temporary_buffer(T* p) noexcept;
165
166template <class T> T* addressof(T& r) noexcept;
167
168template <class InputIterator, class ForwardIterator>
169ForwardIterator
170uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result);
171
172template <class InputIterator, class Size, class ForwardIterator>
173ForwardIterator
174uninitialized_copy_n(InputIterator first, Size n, ForwardIterator result);
175
176template <class ForwardIterator, class T>
177void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x);
178
179template <class ForwardIterator, class Size, class T>
180ForwardIterator
181uninitialized_fill_n(ForwardIterator first, Size n, const T& x);
182
183template <class Y> struct auto_ptr_ref {};
184
185template<class X>
186class auto_ptr
187{
188public:
189 typedef X element_type;
190
191 explicit auto_ptr(X* p =0) throw();
192 auto_ptr(auto_ptr&) throw();
193 template<class Y> auto_ptr(auto_ptr<Y>&) throw();
194 auto_ptr& operator=(auto_ptr&) throw();
195 template<class Y> auto_ptr& operator=(auto_ptr<Y>&) throw();
196 auto_ptr& operator=(auto_ptr_ref<X> r) throw();
197 ~auto_ptr() throw();
198
199 typename add_lvalue_reference<X>::type operator*() const throw();
200 X* operator->() const throw();
201 X* get() const throw();
202 X* release() throw();
203 void reset(X* p =0) throw();
204
205 auto_ptr(auto_ptr_ref<X>) throw();
206 template<class Y> operator auto_ptr_ref<Y>() throw();
207 template<class Y> operator auto_ptr<Y>() throw();
208};
209
210template <class T>
211struct default_delete
212{
213 constexpr default_delete() noexcept = default;
214 template <class U> default_delete(const default_delete<U>&) noexcept;
215
216 void operator()(T*) const noexcept;
217};
218
219template <class T>
220struct default_delete<T[]>
221{
222 constexpr default_delete() noexcept = default;
223 void operator()(T*) const noexcept;
224 template <class U> void operator()(U*) const = delete;
225};
226
227template <class T, class D = default_delete<T>>
228class unique_ptr
229{
230public:
231 typedef see below pointer;
232 typedef T element_type;
233 typedef D deleter_type;
234
235 // constructors
236 constexpr unique_ptr() noexcept;
237 explicit unique_ptr(pointer p) noexcept;
238 unique_ptr(pointer p, see below d1) noexcept;
239 unique_ptr(pointer p, see below d2) noexcept;
240 unique_ptr(unique_ptr&& u) noexcept;
241 unique_ptr(nullptr_t) noexcept : unique_ptr() { }
242 template <class U, class E>
243 unique_ptr(unique_ptr<U, E>&& u) noexcept;
244 template <class U>
245 unique_ptr(auto_ptr<U>&& u) noexcept;
246
247 // destructor
248 ~unique_ptr();
249
250 // assignment
251 unique_ptr& operator=(unique_ptr&& u) noexcept;
252 template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept;
253 unique_ptr& operator=(nullptr_t) noexcept;
254
255 // observers
256 typename add_lvalue_reference<T>::type operator*() const;
257 pointer operator->() const noexcept;
258 pointer get() const noexcept;
259 deleter_type& get_deleter() noexcept;
260 const deleter_type& get_deleter() const noexcept;
261 explicit operator bool() const noexcept;
262
263 // modifiers
264 pointer release() noexcept;
265 void reset(pointer p = pointer()) noexcept;
266 void swap(unique_ptr& u) noexcept;
267};
268
269template <class T, class D>
270class unique_ptr<T[], D>
271{
272public:
273 typedef implementation-defined pointer;
274 typedef T element_type;
275 typedef D deleter_type;
276
277 // constructors
278 constexpr unique_ptr() noexcept;
279 explicit unique_ptr(pointer p) noexcept;
280 unique_ptr(pointer p, see below d) noexcept;
281 unique_ptr(pointer p, see below d) noexcept;
282 unique_ptr(unique_ptr&& u) noexcept;
283 unique_ptr(nullptr_t) noexcept : unique_ptr() { }
284
285 // destructor
286 ~unique_ptr();
287
288 // assignment
289 unique_ptr& operator=(unique_ptr&& u) noexcept;
290 unique_ptr& operator=(nullptr_t) noexcept;
291
292 // observers
293 T& operator[](size_t i) const;
294 pointer get() const noexcept;
295 deleter_type& get_deleter() noexcept;
296 const deleter_type& get_deleter() const noexcept;
297 explicit operator bool() const noexcept;
298
299 // modifiers
300 pointer release() noexcept;
301 void reset(pointer p = pointer()) noexcept;
302 void reset(nullptr_t) noexcept;
303 template <class U> void reset(U) = delete;
304 void swap(unique_ptr& u) noexcept;
305};
306
307template <class T, class D>
308 void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept;
309
310template <class T1, class D1, class T2, class D2>
311 bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
312template <class T1, class D1, class T2, class D2>
313 bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
314template <class T1, class D1, class T2, class D2>
315 bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
316template <class T1, class D1, class T2, class D2>
317 bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
318template <class T1, class D1, class T2, class D2>
319 bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
320template <class T1, class D1, class T2, class D2>
321 bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
322
323template <class T, class D>
324 bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept;
325template <class T, class D>
326 bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept;
327template <class T, class D>
328 bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept;
329template <class T, class D>
330 bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept;
331
332template <class T, class D>
333 bool operator<(const unique_ptr<T, D>& x, nullptr_t);
334template <class T, class D>
335 bool operator<(nullptr_t, const unique_ptr<T, D>& y);
336template <class T, class D>
337 bool operator<=(const unique_ptr<T, D>& x, nullptr_t);
338template <class T, class D>
339 bool operator<=(nullptr_t, const unique_ptr<T, D>& y);
340template <class T, class D>
341 bool operator>(const unique_ptr<T, D>& x, nullptr_t);
342template <class T, class D>
343 bool operator>(nullptr_t, const unique_ptr<T, D>& y);
344template <class T, class D>
345 bool operator>=(const unique_ptr<T, D>& x, nullptr_t);
346template <class T, class D>
347 bool operator>=(nullptr_t, const unique_ptr<T, D>& y);
348
349class bad_weak_ptr
350 : public std::exception
351{
352 bad_weak_ptr() noexcept;
353};
354
355template<class T, class... Args> unique_ptr<T> make_unique(Args&&... args); // C++14
356template<class T> unique_ptr<T> make_unique(size_t n); // C++14
357template<class T, class... Args> unspecified make_unique(Args&&...) = delete; // C++14, T == U[N]
358
359template<class T>
360class shared_ptr
361{
362public:
363 typedef T element_type;
364 typedef weak_ptr<T> weak_type; // C++17
365
366 // constructors:
367 constexpr shared_ptr() noexcept;
368 template<class Y> explicit shared_ptr(Y* p);
369 template<class Y, class D> shared_ptr(Y* p, D d);
370 template<class Y, class D, class A> shared_ptr(Y* p, D d, A a);
371 template <class D> shared_ptr(nullptr_t p, D d);
372 template <class D, class A> shared_ptr(nullptr_t p, D d, A a);
373 template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p) noexcept;
374 shared_ptr(const shared_ptr& r) noexcept;
375 template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept;
376 shared_ptr(shared_ptr&& r) noexcept;
377 template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept;
378 template<class Y> explicit shared_ptr(const weak_ptr<Y>& r);
379 template<class Y> shared_ptr(auto_ptr<Y>&& r);
380 template <class Y, class D> shared_ptr(unique_ptr<Y, D>&& r);
381 shared_ptr(nullptr_t) : shared_ptr() { }
382
383 // destructor:
384 ~shared_ptr();
385
386 // assignment:
387 shared_ptr& operator=(const shared_ptr& r) noexcept;
388 template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept;
389 shared_ptr& operator=(shared_ptr&& r) noexcept;
390 template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r);
391 template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r);
392 template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r);
393
394 // modifiers:
395 void swap(shared_ptr& r) noexcept;
396 void reset() noexcept;
397 template<class Y> void reset(Y* p);
398 template<class Y, class D> void reset(Y* p, D d);
399 template<class Y, class D, class A> void reset(Y* p, D d, A a);
400
401 // observers:
402 T* get() const noexcept;
403 T& operator*() const noexcept;
404 T* operator->() const noexcept;
405 long use_count() const noexcept;
406 bool unique() const noexcept;
407 explicit operator bool() const noexcept;
408 template<class U> bool owner_before(shared_ptr<U> const& b) const;
409 template<class U> bool owner_before(weak_ptr<U> const& b) const;
410};
411
412// shared_ptr comparisons:
413template<class T, class U>
414 bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
415template<class T, class U>
416 bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
417template<class T, class U>
418 bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
419template<class T, class U>
420 bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
421template<class T, class U>
422 bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
423template<class T, class U>
424 bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
425
426template <class T>
427 bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept;
428template <class T>
429 bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept;
430template <class T>
431 bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept;
432template <class T>
433 bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept;
434template <class T>
435 bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept;
436template <class T>
437bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept;
438template <class T>
439 bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept;
440template <class T>
441 bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept;
442template <class T>
443 bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept;
444template <class T>
445 bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept;
446template <class T>
447 bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept;
448template <class T>
449 bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept;
450
451// shared_ptr specialized algorithms:
452template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept;
453
454// shared_ptr casts:
455template<class T, class U>
456 shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept;
457template<class T, class U>
458 shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept;
459template<class T, class U>
460 shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept;
461
462// shared_ptr I/O:
463template<class E, class T, class Y>
464 basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, shared_ptr<Y> const& p);
465
466// shared_ptr get_deleter:
467template<class D, class T> D* get_deleter(shared_ptr<T> const& p) noexcept;
468
469template<class T, class... Args>
470 shared_ptr<T> make_shared(Args&&... args);
471template<class T, class A, class... Args>
472 shared_ptr<T> allocate_shared(const A& a, Args&&... args);
473
474template<class T>
475class weak_ptr
476{
477public:
478 typedef T element_type;
479
480 // constructors
481 constexpr weak_ptr() noexcept;
482 template<class Y> weak_ptr(shared_ptr<Y> const& r) noexcept;
483 weak_ptr(weak_ptr const& r) noexcept;
484 template<class Y> weak_ptr(weak_ptr<Y> const& r) noexcept;
485 weak_ptr(weak_ptr&& r) noexcept; // C++14
486 template<class Y> weak_ptr(weak_ptr<Y>&& r) noexcept; // C++14
487
488 // destructor
489 ~weak_ptr();
490
491 // assignment
492 weak_ptr& operator=(weak_ptr const& r) noexcept;
493 template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r) noexcept;
494 template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r) noexcept;
495 weak_ptr& operator=(weak_ptr&& r) noexcept; // C++14
496 template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r) noexcept; // C++14
497
498 // modifiers
499 void swap(weak_ptr& r) noexcept;
500 void reset() noexcept;
501
502 // observers
503 long use_count() const noexcept;
504 bool expired() const noexcept;
505 shared_ptr<T> lock() const noexcept;
506 template<class U> bool owner_before(shared_ptr<U> const& b) const;
507 template<class U> bool owner_before(weak_ptr<U> const& b) const;
508};
509
510// weak_ptr specialized algorithms:
511template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept;
512
513// class owner_less:
514template<class T> struct owner_less;
515
516template<class T>
517struct owner_less<shared_ptr<T>>
518 : binary_function<shared_ptr<T>, shared_ptr<T>, bool>
519{
520 typedef bool result_type;
521 bool operator()(shared_ptr<T> const&, shared_ptr<T> const&) const;
522 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const;
523 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const;
524};
525
526template<class T>
527struct owner_less<weak_ptr<T>>
528 : binary_function<weak_ptr<T>, weak_ptr<T>, bool>
529{
530 typedef bool result_type;
531 bool operator()(weak_ptr<T> const&, weak_ptr<T> const&) const;
532 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const;
533 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const;
534};
535
536template<class T>
537class enable_shared_from_this
538{
539protected:
540 constexpr enable_shared_from_this() noexcept;
541 enable_shared_from_this(enable_shared_from_this const&) noexcept;
542 enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept;
543 ~enable_shared_from_this();
544public:
545 shared_ptr<T> shared_from_this();
546 shared_ptr<T const> shared_from_this() const;
547};
548
549template<class T>
550 bool atomic_is_lock_free(const shared_ptr<T>* p);
551template<class T>
552 shared_ptr<T> atomic_load(const shared_ptr<T>* p);
553template<class T>
554 shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo);
555template<class T>
556 void atomic_store(shared_ptr<T>* p, shared_ptr<T> r);
557template<class T>
558 void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo);
559template<class T>
560 shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r);
561template<class T>
562 shared_ptr<T>
563 atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo);
564template<class T>
565 bool
566 atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w);
567template<class T>
568 bool
569 atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w);
570template<class T>
571 bool
572 atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v,
573 shared_ptr<T> w, memory_order success,
574 memory_order failure);
575template<class T>
576 bool
577 atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v,
578 shared_ptr<T> w, memory_order success,
579 memory_order failure);
580// Hash support
581template <class T> struct hash;
582template <class T, class D> struct hash<unique_ptr<T, D> >;
583template <class T> struct hash<shared_ptr<T> >;
584
585// Pointer safety
586enum class pointer_safety { relaxed, preferred, strict };
587void declare_reachable(void *p);
588template <class T> T *undeclare_reachable(T *p);
589void declare_no_pointers(char *p, size_t n);
590void undeclare_no_pointers(char *p, size_t n);
591pointer_safety get_pointer_safety() noexcept;
592
593void* align(size_t alignment, size_t size, void*& ptr, size_t& space);
594
595} // std
596
597*/
598
599#include <__config>
600#include <type_traits>
601#include <typeinfo>
602#include <cstddef>
603#include <cstdint>
604#include <new>
605#include <utility>
606#include <limits>
607#include <iterator>
608#include <__functional_base>
609#include <iosfwd>
610#include <tuple>
611#include <stdexcept>
612#include <cstring>
613#if defined(_LIBCPP_NO_EXCEPTIONS)
614 #include <cassert>
615#endif
616
617#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
618# include <atomic>
619#endif
620
621#include <__undef_min_max>
622#include <__undef___deallocate>
623
624#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
625#pragma GCC system_header
626#endif
627
628_LIBCPP_BEGIN_NAMESPACE_STD
629
630template <class _ValueType>
631inline _LIBCPP_ALWAYS_INLINE
632_ValueType __libcpp_relaxed_load(_ValueType const* __value) {
633#if !defined(_LIBCPP_HAS_NO_THREADS) && \
634 defined(__ATOMIC_RELAXED) && \
635 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407)
636 return __atomic_load_n(__value, __ATOMIC_RELAXED);
637#else
638 return *__value;
639#endif
640}
641
642// addressof moved to <__functional_base>
643
644template <class _Tp> class allocator;
645
646template <>
647class _LIBCPP_TYPE_VIS_ONLY allocator<void>
648{
649public:
650 typedef void* pointer;
651 typedef const void* const_pointer;
652 typedef void value_type;
653
654 template <class _Up> struct rebind {typedef allocator<_Up> other;};
655};
656
657template <>
658class _LIBCPP_TYPE_VIS_ONLY allocator<const void>
659{
660public:
661 typedef const void* pointer;
662 typedef const void* const_pointer;
663 typedef const void value_type;
664
665 template <class _Up> struct rebind {typedef allocator<_Up> other;};
666};
667
668// pointer_traits
669
670template <class _Tp>
671struct __has_element_type
672{
673private:
674 struct __two {char __lx; char __lxx;};
675 template <class _Up> static __two __test(...);
676 template <class _Up> static char __test(typename _Up::element_type* = 0);
677public:
678 static const bool value = sizeof(__test<_Tp>(0)) == 1;
679};
680
681template <class _Ptr, bool = __has_element_type<_Ptr>::value>
682struct __pointer_traits_element_type;
683
684template <class _Ptr>
685struct __pointer_traits_element_type<_Ptr, true>
686{
687 typedef typename _Ptr::element_type type;
688};
689
690#ifndef _LIBCPP_HAS_NO_VARIADICS
691
692template <template <class, class...> class _Sp, class _Tp, class ..._Args>
693struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true>
694{
695 typedef typename _Sp<_Tp, _Args...>::element_type type;
696};
697
698template <template <class, class...> class _Sp, class _Tp, class ..._Args>
699struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false>
700{
701 typedef _Tp type;
702};
703
704#else // _LIBCPP_HAS_NO_VARIADICS
705
706template <template <class> class _Sp, class _Tp>
707struct __pointer_traits_element_type<_Sp<_Tp>, true>
708{
709 typedef typename _Sp<_Tp>::element_type type;
710};
711
712template <template <class> class _Sp, class _Tp>
713struct __pointer_traits_element_type<_Sp<_Tp>, false>
714{
715 typedef _Tp type;
716};
717
718template <template <class, class> class _Sp, class _Tp, class _A0>
719struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true>
720{
721 typedef typename _Sp<_Tp, _A0>::element_type type;
722};
723
724template <template <class, class> class _Sp, class _Tp, class _A0>
725struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false>
726{
727 typedef _Tp type;
728};
729
730template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1>
731struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true>
732{
733 typedef typename _Sp<_Tp, _A0, _A1>::element_type type;
734};
735
736template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1>
737struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false>
738{
739 typedef _Tp type;
740};
741
742template <template <class, class, class, class> class _Sp, class _Tp, class _A0,
743 class _A1, class _A2>
744struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true>
745{
746 typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type;
747};
748
749template <template <class, class, class, class> class _Sp, class _Tp, class _A0,
750 class _A1, class _A2>
751struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false>
752{
753 typedef _Tp type;
754};
755
756#endif // _LIBCPP_HAS_NO_VARIADICS
757
758template <class _Tp>
759struct __has_difference_type
760{
761private:
762 struct __two {char __lx; char __lxx;};
763 template <class _Up> static __two __test(...);
764 template <class _Up> static char __test(typename _Up::difference_type* = 0);
765public:
766 static const bool value = sizeof(__test<_Tp>(0)) == 1;
767};
768
769template <class _Ptr, bool = __has_difference_type<_Ptr>::value>
770struct __pointer_traits_difference_type
771{
772 typedef ptrdiff_t type;
773};
774
775template <class _Ptr>
776struct __pointer_traits_difference_type<_Ptr, true>
777{
778 typedef typename _Ptr::difference_type type;
779};
780
781template <class _Tp, class _Up>
782struct __has_rebind
783{
784private:
785 struct __two {char __lx; char __lxx;};
786 template <class _Xp> static __two __test(...);
787 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0);
788public:
789 static const bool value = sizeof(__test<_Tp>(0)) == 1;
790};
791
792template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value>
793struct __pointer_traits_rebind
794{
795#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
796 typedef typename _Tp::template rebind<_Up> type;
797#else
798 typedef typename _Tp::template rebind<_Up>::other type;
799#endif
800};
801
802#ifndef _LIBCPP_HAS_NO_VARIADICS
803
804template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up>
805struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true>
806{
807#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
808 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type;
809#else
810 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type;
811#endif
812};
813
814template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up>
815struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false>
816{
817 typedef _Sp<_Up, _Args...> type;
818};
819
820#else // _LIBCPP_HAS_NO_VARIADICS
821
822template <template <class> class _Sp, class _Tp, class _Up>
823struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true>
824{
825#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
826 typedef typename _Sp<_Tp>::template rebind<_Up> type;
827#else
828 typedef typename _Sp<_Tp>::template rebind<_Up>::other type;
829#endif
830};
831
832template <template <class> class _Sp, class _Tp, class _Up>
833struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false>
834{
835 typedef _Sp<_Up> type;
836};
837
838template <template <class, class> class _Sp, class _Tp, class _A0, class _Up>
839struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true>
840{
841#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
842 typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type;
843#else
844 typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type;
845#endif
846};
847
848template <template <class, class> class _Sp, class _Tp, class _A0, class _Up>
849struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false>
850{
851 typedef _Sp<_Up, _A0> type;
852};
853
854template <template <class, class, class> class _Sp, class _Tp, class _A0,
855 class _A1, class _Up>
856struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true>
857{
858#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
859 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type;
860#else
861 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type;
862#endif
863};
864
865template <template <class, class, class> class _Sp, class _Tp, class _A0,
866 class _A1, class _Up>
867struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false>
868{
869 typedef _Sp<_Up, _A0, _A1> type;
870};
871
872template <template <class, class, class, class> class _Sp, class _Tp, class _A0,
873 class _A1, class _A2, class _Up>
874struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true>
875{
876#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
877 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type;
878#else
879 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type;
880#endif
881};
882
883template <template <class, class, class, class> class _Sp, class _Tp, class _A0,
884 class _A1, class _A2, class _Up>
885struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false>
886{
887 typedef _Sp<_Up, _A0, _A1, _A2> type;
888};
889
890#endif // _LIBCPP_HAS_NO_VARIADICS
891
892template <class _Ptr>
893struct _LIBCPP_TYPE_VIS_ONLY pointer_traits
894{
895 typedef _Ptr pointer;
896 typedef typename __pointer_traits_element_type<pointer>::type element_type;
897 typedef typename __pointer_traits_difference_type<pointer>::type difference_type;
898
899#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
900 template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type;
901#else
902 template <class _Up> struct rebind
903 {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;};
904#endif // _LIBCPP_HAS_NO_TEMPLATE_ALIASES
905
906private:
907 struct __nat {};
908public:
909 _LIBCPP_INLINE_VISIBILITY
910 static pointer pointer_to(typename conditional<is_void<element_type>::value,
911 __nat, element_type>::type& __r)
912 {return pointer::pointer_to(__r);}
913};
914
915template <class _Tp>
916struct _LIBCPP_TYPE_VIS_ONLY pointer_traits<_Tp*>
917{
918 typedef _Tp* pointer;
919 typedef _Tp element_type;
920 typedef ptrdiff_t difference_type;
921
922#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
923 template <class _Up> using rebind = _Up*;
924#else
925 template <class _Up> struct rebind {typedef _Up* other;};
926#endif
927
928private:
929 struct __nat {};
930public:
931 _LIBCPP_INLINE_VISIBILITY
932 static pointer pointer_to(typename conditional<is_void<element_type>::value,
933 __nat, element_type>::type& __r) _NOEXCEPT
934 {return _VSTD::addressof(__r);}
935};
936
937template <class _From, class _To>
938struct __rebind_pointer {
939#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
940 typedef typename pointer_traits<_From>::template rebind<_To> type;
941#else
942 typedef typename pointer_traits<_From>::template rebind<_To>::other type;
943#endif
944};
945
946// allocator_traits
947
948namespace __has_pointer_type_imp
949{
950 template <class _Up> static __two __test(...);
951 template <class _Up> static char __test(typename _Up::pointer* = 0);
952}
953
954template <class _Tp>
955struct __has_pointer_type
956 : public integral_constant<bool, sizeof(__has_pointer_type_imp::__test<_Tp>(0)) == 1>
957{
958};
959
960namespace __pointer_type_imp
961{
962
963template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value>
964struct __pointer_type
965{
966 typedef typename _Dp::pointer type;
967};
968
969template <class _Tp, class _Dp>
970struct __pointer_type<_Tp, _Dp, false>
971{
972 typedef _Tp* type;
973};
974
975} // __pointer_type_imp
976
977template <class _Tp, class _Dp>
978struct __pointer_type
979{
980 typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type;
981};
982
983template <class _Tp>
984struct __has_const_pointer
985{
986private:
987 struct __two {char __lx; char __lxx;};
988 template <class _Up> static __two __test(...);
989 template <class _Up> static char __test(typename _Up::const_pointer* = 0);
990public:
991 static const bool value = sizeof(__test<_Tp>(0)) == 1;
992};
993
994template <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value>
995struct __const_pointer
996{
997 typedef typename _Alloc::const_pointer type;
998};
999
1000template <class _Tp, class _Ptr, class _Alloc>
1001struct __const_pointer<_Tp, _Ptr, _Alloc, false>
1002{
1003#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
1004 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp> type;
1005#else
1006 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type;
1007#endif
1008};
1009
1010template <class _Tp>
1011struct __has_void_pointer
1012{
1013private:
1014 struct __two {char __lx; char __lxx;};
1015 template <class _Up> static __two __test(...);
1016 template <class _Up> static char __test(typename _Up::void_pointer* = 0);
1017public:
1018 static const bool value = sizeof(__test<_Tp>(0)) == 1;
1019};
1020
1021template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value>
1022struct __void_pointer
1023{
1024 typedef typename _Alloc::void_pointer type;
1025};
1026
1027template <class _Ptr, class _Alloc>
1028struct __void_pointer<_Ptr, _Alloc, false>
1029{
1030#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
1031 typedef typename pointer_traits<_Ptr>::template rebind<void> type;
1032#else
1033 typedef typename pointer_traits<_Ptr>::template rebind<void>::other type;
1034#endif
1035};
1036
1037template <class _Tp>
1038struct __has_const_void_pointer
1039{
1040private:
1041 struct __two {char __lx; char __lxx;};
1042 template <class _Up> static __two __test(...);
1043 template <class _Up> static char __test(typename _Up::const_void_pointer* = 0);
1044public:
1045 static const bool value = sizeof(__test<_Tp>(0)) == 1;
1046};
1047
1048template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value>
1049struct __const_void_pointer
1050{
1051 typedef typename _Alloc::const_void_pointer type;
1052};
1053
1054template <class _Ptr, class _Alloc>
1055struct __const_void_pointer<_Ptr, _Alloc, false>
1056{
1057#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
1058 typedef typename pointer_traits<_Ptr>::template rebind<const void> type;
1059#else
1060 typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type;
1061#endif
1062};
1063
1064template <class _Tp>
1065inline _LIBCPP_INLINE_VISIBILITY
1066_Tp*
1067__to_raw_pointer(_Tp* __p) _NOEXCEPT
1068{
1069 return __p;
1070}
1071
1072template <class _Pointer>
1073inline _LIBCPP_INLINE_VISIBILITY
1074typename pointer_traits<_Pointer>::element_type*
1075__to_raw_pointer(_Pointer __p) _NOEXCEPT
1076{
1077 return _VSTD::__to_raw_pointer(__p.operator->());
1078}
1079
1080template <class _Tp>
1081struct __has_size_type
1082{
1083private:
1084 struct __two {char __lx; char __lxx;};
1085 template <class _Up> static __two __test(...);
1086 template <class _Up> static char __test(typename _Up::size_type* = 0);
1087public:
1088 static const bool value = sizeof(__test<_Tp>(0)) == 1;
1089};
1090
1091template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value>
1092struct __size_type
1093{
1094 typedef typename make_unsigned<_DiffType>::type type;
1095};
1096
1097template <class _Alloc, class _DiffType>
1098struct __size_type<_Alloc, _DiffType, true>
1099{
1100 typedef typename _Alloc::size_type type;
1101};
1102
1103template <class _Tp>
1104struct __has_propagate_on_container_copy_assignment
1105{
1106private:
1107 struct __two {char __lx; char __lxx;};
1108 template <class _Up> static __two __test(...);
1109 template <class _Up> static char __test(typename _Up::propagate_on_container_copy_assignment* = 0);
1110public:
1111 static const bool value = sizeof(__test<_Tp>(0)) == 1;
1112};
1113
1114template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value>
1115struct __propagate_on_container_copy_assignment
1116{
1117 typedef false_type type;
1118};
1119
1120template <class _Alloc>
1121struct __propagate_on_container_copy_assignment<_Alloc, true>
1122{
1123 typedef typename _Alloc::propagate_on_container_copy_assignment type;
1124};
1125
1126template <class _Tp>
1127struct __has_propagate_on_container_move_assignment
1128{
1129private:
1130 struct __two {char __lx; char __lxx;};
1131 template <class _Up> static __two __test(...);
1132 template <class _Up> static char __test(typename _Up::propagate_on_container_move_assignment* = 0);
1133public:
1134 static const bool value = sizeof(__test<_Tp>(0)) == 1;
1135};
1136
1137template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value>
1138struct __propagate_on_container_move_assignment
1139{
1140 typedef false_type type;
1141};
1142
1143template <class _Alloc>
1144struct __propagate_on_container_move_assignment<_Alloc, true>
1145{
1146 typedef typename _Alloc::propagate_on_container_move_assignment type;
1147};
1148
1149template <class _Tp>
1150struct __has_propagate_on_container_swap
1151{
1152private:
1153 struct __two {char __lx; char __lxx;};
1154 template <class _Up> static __two __test(...);
1155 template <class _Up> static char __test(typename _Up::propagate_on_container_swap* = 0);
1156public:
1157 static const bool value = sizeof(__test<_Tp>(0)) == 1;
1158};
1159
1160template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value>
1161struct __propagate_on_container_swap
1162{
1163 typedef false_type type;
1164};
1165
1166template <class _Alloc>
1167struct __propagate_on_container_swap<_Alloc, true>
1168{
1169 typedef typename _Alloc::propagate_on_container_swap type;
1170};
1171
1172template <class _Tp>
1173struct __has_is_always_equal
1174{
1175private:
1176 struct __two {char __lx; char __lxx;};
1177 template <class _Up> static __two __test(...);
1178 template <class _Up> static char __test(typename _Up::is_always_equal* = 0);
1179public:
1180 static const bool value = sizeof(__test<_Tp>(0)) == 1;
1181};
1182
1183template <class _Alloc, bool = __has_is_always_equal<_Alloc>::value>
1184struct __is_always_equal
1185{
1186 typedef typename _VSTD::is_empty<_Alloc>::type type;
1187};
1188
1189template <class _Alloc>
1190struct __is_always_equal<_Alloc, true>
1191{
1192 typedef typename _Alloc::is_always_equal type;
1193};
1194
1195template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value>
1196struct __has_rebind_other
1197{
1198private:
1199 struct __two {char __lx; char __lxx;};
1200 template <class _Xp> static __two __test(...);
1201 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0);
1202public:
1203 static const bool value = sizeof(__test<_Tp>(0)) == 1;
1204};
1205
1206template <class _Tp, class _Up>
1207struct __has_rebind_other<_Tp, _Up, false>
1208{
1209 static const bool value = false;
1210};
1211
1212template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value>
1213struct __allocator_traits_rebind
1214{
1215 typedef typename _Tp::template rebind<_Up>::other type;
1216};
1217
1218#ifndef _LIBCPP_HAS_NO_VARIADICS
1219
1220template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up>
1221struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true>
1222{
1223 typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type;
1224};
1225
1226template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up>
1227struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false>
1228{
1229 typedef _Alloc<_Up, _Args...> type;
1230};
1231
1232#else // _LIBCPP_HAS_NO_VARIADICS
1233
1234template <template <class> class _Alloc, class _Tp, class _Up>
1235struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true>
1236{
1237 typedef typename _Alloc<_Tp>::template rebind<_Up>::other type;
1238};
1239
1240template <template <class> class _Alloc, class _Tp, class _Up>
1241struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false>
1242{
1243 typedef _Alloc<_Up> type;
1244};
1245
1246template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up>
1247struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true>
1248{
1249 typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type;
1250};
1251
1252template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up>
1253struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false>
1254{
1255 typedef _Alloc<_Up, _A0> type;
1256};
1257
1258template <template <class, class, class> class _Alloc, class _Tp, class _A0,
1259 class _A1, class _Up>
1260struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true>
1261{
1262 typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type;
1263};
1264
1265template <template <class, class, class> class _Alloc, class _Tp, class _A0,
1266 class _A1, class _Up>
1267struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false>
1268{
1269 typedef _Alloc<_Up, _A0, _A1> type;
1270};
1271
1272template <template <class, class, class, class> class _Alloc, class _Tp, class _A0,
1273 class _A1, class _A2, class _Up>
1274struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true>
1275{
1276 typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type;
1277};
1278
1279template <template <class, class, class, class> class _Alloc, class _Tp, class _A0,
1280 class _A1, class _A2, class _Up>
1281struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false>
1282{
1283 typedef _Alloc<_Up, _A0, _A1, _A2> type;
1284};
1285
1286#endif // _LIBCPP_HAS_NO_VARIADICS
1287
1288#ifndef _LIBCPP_HAS_NO_ADVANCED_SFINAE
1289
1290template <class _Alloc, class _SizeType, class _ConstVoidPtr>
1291auto
1292__has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p)
1293 -> decltype(__a.allocate(__sz, __p), true_type());
1294
1295template <class _Alloc, class _SizeType, class _ConstVoidPtr>
1296auto
1297__has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p)
1298 -> false_type;
1299
1300template <class _Alloc, class _SizeType, class _ConstVoidPtr>
1301struct __has_allocate_hint
1302 : integral_constant<bool,
1303 is_same<
1304 decltype(__has_allocate_hint_test(declval<_Alloc>(),
1305 declval<_SizeType>(),
1306 declval<_ConstVoidPtr>())),
1307 true_type>::value>
1308{
1309};
1310
1311#else // _LIBCPP_HAS_NO_ADVANCED_SFINAE
1312
1313template <class _Alloc, class _SizeType, class _ConstVoidPtr>
1314struct __has_allocate_hint
1315 : true_type
1316{
1317};
1318
1319#endif // _LIBCPP_HAS_NO_ADVANCED_SFINAE
1320
1321#if !defined(_LIBCPP_HAS_NO_ADVANCED_SFINAE) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1322
1323template <class _Alloc, class _Tp, class ..._Args>
1324decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(),
1325 _VSTD::declval<_Args>()...),
1326 true_type())
1327__has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args);
1328
1329template <class _Alloc, class _Pointer, class ..._Args>
1330false_type
1331__has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args);
1332
1333template <class _Alloc, class _Pointer, class ..._Args>
1334struct __has_construct
1335 : integral_constant<bool,
1336 is_same<
1337 decltype(__has_construct_test(declval<_Alloc>(),
1338 declval<_Pointer>(),
1339 declval<_Args>()...)),
1340 true_type>::value>
1341{
1342};
1343
1344template <class _Alloc, class _Pointer>
1345auto
1346__has_destroy_test(_Alloc&& __a, _Pointer&& __p)
1347 -> decltype(__a.destroy(__p), true_type());
1348
1349template <class _Alloc, class _Pointer>
1350auto
1351__has_destroy_test(const _Alloc& __a, _Pointer&& __p)
1352 -> false_type;
1353
1354template <class _Alloc, class _Pointer>
1355struct __has_destroy
1356 : integral_constant<bool,
1357 is_same<
1358 decltype(__has_destroy_test(declval<_Alloc>(),
1359 declval<_Pointer>())),
1360 true_type>::value>
1361{
1362};
1363
1364template <class _Alloc>
1365auto
1366__has_max_size_test(_Alloc&& __a)
1367 -> decltype(__a.max_size(), true_type());
1368
1369template <class _Alloc>
1370auto
1371__has_max_size_test(const volatile _Alloc& __a)
1372 -> false_type;
1373
1374template <class _Alloc>
1375struct __has_max_size
1376 : integral_constant<bool,
1377 is_same<
1378 decltype(__has_max_size_test(declval<_Alloc&>())),
1379 true_type>::value>
1380{
1381};
1382
1383template <class _Alloc>
1384auto
1385__has_select_on_container_copy_construction_test(_Alloc&& __a)
1386 -> decltype(__a.select_on_container_copy_construction(), true_type());
1387
1388template <class _Alloc>
1389auto
1390__has_select_on_container_copy_construction_test(const volatile _Alloc& __a)
1391 -> false_type;
1392
1393template <class _Alloc>
1394struct __has_select_on_container_copy_construction
1395 : integral_constant<bool,
1396 is_same<
1397 decltype(__has_select_on_container_copy_construction_test(declval<_Alloc&>())),
1398 true_type>::value>
1399{
1400};
1401
1402#else // _LIBCPP_HAS_NO_ADVANCED_SFINAE
1403
1404#ifndef _LIBCPP_HAS_NO_VARIADICS
1405
1406template <class _Alloc, class _Pointer, class ..._Args>
1407struct __has_construct
1408 : false_type
1409{
1410};
1411
1412#else // _LIBCPP_HAS_NO_VARIADICS
1413
1414template <class _Alloc, class _Pointer, class _Args>
1415struct __has_construct
1416 : false_type
1417{
1418};
1419
1420#endif // _LIBCPP_HAS_NO_VARIADICS
1421
1422template <class _Alloc, class _Pointer>
1423struct __has_destroy
1424 : false_type
1425{
1426};
1427
1428template <class _Alloc>
1429struct __has_max_size
1430 : true_type
1431{
1432};
1433
1434template <class _Alloc>
1435struct __has_select_on_container_copy_construction
1436 : false_type
1437{
1438};
1439
1440#endif // _LIBCPP_HAS_NO_ADVANCED_SFINAE
1441
1442template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value>
1443struct __alloc_traits_difference_type
1444{
1445 typedef typename pointer_traits<_Ptr>::difference_type type;
1446};
1447
1448template <class _Alloc, class _Ptr>
1449struct __alloc_traits_difference_type<_Alloc, _Ptr, true>
1450{
1451 typedef typename _Alloc::difference_type type;
1452};
1453
1454template <class _Alloc>
1455struct _LIBCPP_TYPE_VIS_ONLY allocator_traits
1456{
1457 typedef _Alloc allocator_type;
1458 typedef typename allocator_type::value_type value_type;
1459
1460 typedef typename __pointer_type<value_type, allocator_type>::type pointer;
1461 typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer;
1462 typedef typename __void_pointer<pointer, allocator_type>::type void_pointer;
1463 typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer;
1464
1465 typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type;
1466 typedef typename __size_type<allocator_type, difference_type>::type size_type;
1467
1468 typedef typename __propagate_on_container_copy_assignment<allocator_type>::type
1469 propagate_on_container_copy_assignment;
1470 typedef typename __propagate_on_container_move_assignment<allocator_type>::type
1471 propagate_on_container_move_assignment;
1472 typedef typename __propagate_on_container_swap<allocator_type>::type
1473 propagate_on_container_swap;
1474 typedef typename __is_always_equal<allocator_type>::type
1475 is_always_equal;
1476
1477#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
1478 template <class _Tp> using rebind_alloc =
1479 typename __allocator_traits_rebind<allocator_type, _Tp>::type;
1480 template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>;
1481#else // _LIBCPP_HAS_NO_TEMPLATE_ALIASES
1482 template <class _Tp> struct rebind_alloc
1483 {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;};
1484 template <class _Tp> struct rebind_traits
1485 {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;};
1486#endif // _LIBCPP_HAS_NO_TEMPLATE_ALIASES
1487
1488 _LIBCPP_INLINE_VISIBILITY
1489 static pointer allocate(allocator_type& __a, size_type __n)
1490 {return __a.allocate(__n);}
1491 _LIBCPP_INLINE_VISIBILITY
1492 static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint)
1493 {return allocate(__a, __n, __hint,
1494 __has_allocate_hint<allocator_type, size_type, const_void_pointer>());}
1495
1496 _LIBCPP_INLINE_VISIBILITY
1497 static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT
1498 {__a.deallocate(__p, __n);}
1499
1500#ifndef _LIBCPP_HAS_NO_VARIADICS
1501 template <class _Tp, class... _Args>
1502 _LIBCPP_INLINE_VISIBILITY
1503 static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args)
1504 {__construct(__has_construct<allocator_type, _Tp*, _Args...>(),
1505 __a, __p, _VSTD::forward<_Args>(__args)...);}
1506#else // _LIBCPP_HAS_NO_VARIADICS
1507 template <class _Tp>
1508 _LIBCPP_INLINE_VISIBILITY
1509 static void construct(allocator_type& __a, _Tp* __p)
1510 {
1511 ::new ((void*)__p) _Tp();
1512 }
1513 template <class _Tp, class _A0>
1514 _LIBCPP_INLINE_VISIBILITY
1515 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0)
1516 {
1517 ::new ((void*)__p) _Tp(__a0);
1518 }
1519 template <class _Tp, class _A0, class _A1>
1520 _LIBCPP_INLINE_VISIBILITY
1521 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0,
1522 const _A1& __a1)
1523 {
1524 ::new ((void*)__p) _Tp(__a0, __a1);
1525 }
1526 template <class _Tp, class _A0, class _A1, class _A2>
1527 _LIBCPP_INLINE_VISIBILITY
1528 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0,
1529 const _A1& __a1, const _A2& __a2)
1530 {
1531 ::new ((void*)__p) _Tp(__a0, __a1, __a2);
1532 }
1533#endif // _LIBCPP_HAS_NO_VARIADICS
1534
1535 template <class _Tp>
1536 _LIBCPP_INLINE_VISIBILITY
1537 static void destroy(allocator_type& __a, _Tp* __p)
1538 {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);}
1539
1540 _LIBCPP_INLINE_VISIBILITY
1541 static size_type max_size(const allocator_type& __a) _NOEXCEPT
1542 {return __max_size(__has_max_size<const allocator_type>(), __a);}
1543
1544 _LIBCPP_INLINE_VISIBILITY
1545 static allocator_type
1546 select_on_container_copy_construction(const allocator_type& __a)
1547 {return select_on_container_copy_construction(
1548 __has_select_on_container_copy_construction<const allocator_type>(),
1549 __a);}
1550
1551 template <class _Ptr>
1552 _LIBCPP_INLINE_VISIBILITY
1553 static
1554 void
1555 __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2)
1556 {
1557 for (; __begin1 != __end1; ++__begin1, ++__begin2)
1558 construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1));
1559 }
1560
1561 template <class _Tp>
1562 _LIBCPP_INLINE_VISIBILITY
1563 static
1564 typename enable_if
1565 <
1566 (is_same<allocator_type, allocator<_Tp> >::value
1567 || !__has_construct<allocator_type, _Tp*, _Tp>::value) &&
1568 is_trivially_move_constructible<_Tp>::value,
1569 void
1570 >::type
1571 __construct_forward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2)
1572 {
1573 ptrdiff_t _Np = __end1 - __begin1;
1574 if (_Np > 0)
1575 {
1576 _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp));
1577 __begin2 += _Np;
1578 }
1579 }
1580
1581 template <class _Iter, class _Ptr>
1582 _LIBCPP_INLINE_VISIBILITY
1583 static
1584 void
1585 __construct_range_forward(allocator_type& __a, _Iter __begin1, _Iter __end1, _Ptr& __begin2)
1586 {
1587 for (; __begin1 != __end1; ++__begin1, (void) ++__begin2)
1588 construct(__a, _VSTD::__to_raw_pointer(__begin2), *__begin1);
1589 }
1590
1591 template <class _Tp>
1592 _LIBCPP_INLINE_VISIBILITY
1593 static
1594 typename enable_if
1595 <
1596 (is_same<allocator_type, allocator<_Tp> >::value
1597 || !__has_construct<allocator_type, _Tp*, _Tp>::value) &&
1598 is_trivially_move_constructible<_Tp>::value,
1599 void
1600 >::type
1601 __construct_range_forward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2)
1602 {
1603 typedef typename remove_const<_Tp>::type _Vp;
1604 ptrdiff_t _Np = __end1 - __begin1;
1605 if (_Np > 0)
1606 {
1607 _VSTD::memcpy(const_cast<_Vp*>(__begin2), __begin1, _Np * sizeof(_Tp));
1608 __begin2 += _Np;
1609 }
1610 }
1611
1612 template <class _Ptr>
1613 _LIBCPP_INLINE_VISIBILITY
1614 static
1615 void
1616 __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2)
1617 {
1618 while (__end1 != __begin1)
1619 {
1620 construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1));
1621 --__end2;
1622 }
1623 }
1624
1625 template <class _Tp>
1626 _LIBCPP_INLINE_VISIBILITY
1627 static
1628 typename enable_if
1629 <
1630 (is_same<allocator_type, allocator<_Tp> >::value
1631 || !__has_construct<allocator_type, _Tp*, _Tp>::value) &&
1632 is_trivially_move_constructible<_Tp>::value,
1633 void
1634 >::type
1635 __construct_backward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __end2)
1636 {
1637 ptrdiff_t _Np = __end1 - __begin1;
1638 __end2 -= _Np;
1639 if (_Np > 0)
1640 _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp));
1641 }
1642
1643private:
1644
1645 _LIBCPP_INLINE_VISIBILITY
1646 static pointer allocate(allocator_type& __a, size_type __n,
1647 const_void_pointer __hint, true_type)
1648 {return __a.allocate(__n, __hint);}
1649 _LIBCPP_INLINE_VISIBILITY
1650 static pointer allocate(allocator_type& __a, size_type __n,
1651 const_void_pointer, false_type)
1652 {return __a.allocate(__n);}
1653
1654#ifndef _LIBCPP_HAS_NO_VARIADICS
1655 template <class _Tp, class... _Args>
1656 _LIBCPP_INLINE_VISIBILITY
1657 static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args)
1658 {__a.construct(__p, _VSTD::forward<_Args>(__args)...);}
1659 template <class _Tp, class... _Args>
1660 _LIBCPP_INLINE_VISIBILITY
1661 static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args)
1662 {
1663 ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...);
1664 }
1665#endif // _LIBCPP_HAS_NO_VARIADICS
1666
1667 template <class _Tp>
1668 _LIBCPP_INLINE_VISIBILITY
1669 static void __destroy(true_type, allocator_type& __a, _Tp* __p)
1670 {__a.destroy(__p);}
1671 template <class _Tp>
1672 _LIBCPP_INLINE_VISIBILITY
1673 static void __destroy(false_type, allocator_type&, _Tp* __p)
1674 {
1675 __p->~_Tp();
1676 }
1677
1678 _LIBCPP_INLINE_VISIBILITY
1679 static size_type __max_size(true_type, const allocator_type& __a)
1680 {return __a.max_size();}
1681 _LIBCPP_INLINE_VISIBILITY
1682 static size_type __max_size(false_type, const allocator_type&)
1683 {return numeric_limits<size_type>::max() / sizeof(value_type);}
1684
1685 _LIBCPP_INLINE_VISIBILITY
1686 static allocator_type
1687 select_on_container_copy_construction(true_type, const allocator_type& __a)
1688 {return __a.select_on_container_copy_construction();}
1689 _LIBCPP_INLINE_VISIBILITY
1690 static allocator_type
1691 select_on_container_copy_construction(false_type, const allocator_type& __a)
1692 {return __a;}
1693};
1694
1695template <class _Traits, class _Tp>
1696struct __rebind_alloc_helper
1697{
1698#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
1699 typedef typename _Traits::template rebind_alloc<_Tp> type;
1700#else
1701 typedef typename _Traits::template rebind_alloc<_Tp>::other type;
1702#endif
1703};
1704
1705// allocator
1706
1707template <class _Tp>
1708class _LIBCPP_TYPE_VIS_ONLY allocator
1709{
1710public:
1711 typedef size_t size_type;
1712 typedef ptrdiff_t difference_type;
1713 typedef _Tp* pointer;
1714 typedef const _Tp* const_pointer;
1715 typedef _Tp& reference;
1716 typedef const _Tp& const_reference;
1717 typedef _Tp value_type;
1718
1719 typedef true_type propagate_on_container_move_assignment;
1720 typedef true_type is_always_equal;
1721
1722 template <class _Up> struct rebind {typedef allocator<_Up> other;};
1723
1724 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {}
1725 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {}
1726 _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT
1727 {return _VSTD::addressof(__x);}
1728 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT
1729 {return _VSTD::addressof(__x);}
1730 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0)
1731 {
1732 if (__n > max_size())
1733 __libcpp_throw(e: length_error("allocator<T>::allocate(size_t n)"
1734 " 'n' exceeds maximum supported size"));
1735 return static_cast<pointer>(_VSTD::__allocate(size: __n * sizeof(_Tp)));
1736 }
1737 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT
1738 {_VSTD::__deallocate(ptr: (void*)__p);}
1739 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT
1740 {return size_type(~0) / sizeof(_Tp);}
1741#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1742 template <class _Up, class... _Args>
1743 _LIBCPP_INLINE_VISIBILITY
1744 void
1745 construct(_Up* __p, _Args&&... __args)
1746 {
1747 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...);
1748 }
1749#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1750 _LIBCPP_INLINE_VISIBILITY
1751 void
1752 construct(pointer __p)
1753 {
1754 ::new((void*)__p) _Tp();
1755 }
1756# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1757
1758 template <class _A0>
1759 _LIBCPP_INLINE_VISIBILITY
1760 void
1761 construct(pointer __p, _A0& __a0)
1762 {
1763 ::new((void*)__p) _Tp(__a0);
1764 }
1765 template <class _A0>
1766 _LIBCPP_INLINE_VISIBILITY
1767 void
1768 construct(pointer __p, const _A0& __a0)
1769 {
1770 ::new((void*)__p) _Tp(__a0);
1771 }
1772# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1773 template <class _A0, class _A1>
1774 _LIBCPP_INLINE_VISIBILITY
1775 void
1776 construct(pointer __p, _A0& __a0, _A1& __a1)
1777 {
1778 ::new((void*)__p) _Tp(__a0, __a1);
1779 }
1780 template <class _A0, class _A1>
1781 _LIBCPP_INLINE_VISIBILITY
1782 void
1783 construct(pointer __p, const _A0& __a0, _A1& __a1)
1784 {
1785 ::new((void*)__p) _Tp(__a0, __a1);
1786 }
1787 template <class _A0, class _A1>
1788 _LIBCPP_INLINE_VISIBILITY
1789 void
1790 construct(pointer __p, _A0& __a0, const _A1& __a1)
1791 {
1792 ::new((void*)__p) _Tp(__a0, __a1);
1793 }
1794 template <class _A0, class _A1>
1795 _LIBCPP_INLINE_VISIBILITY
1796 void
1797 construct(pointer __p, const _A0& __a0, const _A1& __a1)
1798 {
1799 ::new((void*)__p) _Tp(__a0, __a1);
1800 }
1801#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1802 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();}
1803};
1804
1805template <class _Tp>
1806class _LIBCPP_TYPE_VIS_ONLY allocator<const _Tp>
1807{
1808public:
1809 typedef size_t size_type;
1810 typedef ptrdiff_t difference_type;
1811 typedef const _Tp* pointer;
1812 typedef const _Tp* const_pointer;
1813 typedef const _Tp& reference;
1814 typedef const _Tp& const_reference;
1815 typedef const _Tp value_type;
1816
1817 typedef true_type propagate_on_container_move_assignment;
1818 typedef true_type is_always_equal;
1819
1820 template <class _Up> struct rebind {typedef allocator<_Up> other;};
1821
1822 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {}
1823 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {}
1824 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT
1825 {return _VSTD::addressof(__x);}
1826 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0)
1827 {
1828 if (__n > max_size())
1829 __libcpp_throw(e: length_error("allocator<const T>::allocate(size_t n)"
1830 " 'n' exceeds maximum supported size"));
1831 return static_cast<pointer>(_VSTD::__allocate(size: __n * sizeof(_Tp)));
1832 }
1833 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT
1834 {_VSTD::__deallocate(ptr: (void*)__p);}
1835 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT
1836 {return size_type(~0) / sizeof(_Tp);}
1837#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1838 template <class _Up, class... _Args>
1839 _LIBCPP_INLINE_VISIBILITY
1840 void
1841 construct(_Up* __p, _Args&&... __args)
1842 {
1843 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...);
1844 }
1845#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1846 _LIBCPP_INLINE_VISIBILITY
1847 void
1848 construct(pointer __p)
1849 {
1850 ::new((void*)__p) _Tp();
1851 }
1852# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1853
1854 template <class _A0>
1855 _LIBCPP_INLINE_VISIBILITY
1856 void
1857 construct(pointer __p, _A0& __a0)
1858 {
1859 ::new((void*)__p) _Tp(__a0);
1860 }
1861 template <class _A0>
1862 _LIBCPP_INLINE_VISIBILITY
1863 void
1864 construct(pointer __p, const _A0& __a0)
1865 {
1866 ::new((void*)__p) _Tp(__a0);
1867 }
1868# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
1869 template <class _A0, class _A1>
1870 _LIBCPP_INLINE_VISIBILITY
1871 void
1872 construct(pointer __p, _A0& __a0, _A1& __a1)
1873 {
1874 ::new((void*)__p) _Tp(__a0, __a1);
1875 }
1876 template <class _A0, class _A1>
1877 _LIBCPP_INLINE_VISIBILITY
1878 void
1879 construct(pointer __p, const _A0& __a0, _A1& __a1)
1880 {
1881 ::new((void*)__p) _Tp(__a0, __a1);
1882 }
1883 template <class _A0, class _A1>
1884 _LIBCPP_INLINE_VISIBILITY
1885 void
1886 construct(pointer __p, _A0& __a0, const _A1& __a1)
1887 {
1888 ::new((void*)__p) _Tp(__a0, __a1);
1889 }
1890 template <class _A0, class _A1>
1891 _LIBCPP_INLINE_VISIBILITY
1892 void
1893 construct(pointer __p, const _A0& __a0, const _A1& __a1)
1894 {
1895 ::new((void*)__p) _Tp(__a0, __a1);
1896 }
1897#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
1898 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();}
1899};
1900
1901template <class _Tp, class _Up>
1902inline _LIBCPP_INLINE_VISIBILITY
1903bool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;}
1904
1905template <class _Tp, class _Up>
1906inline _LIBCPP_INLINE_VISIBILITY
1907bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;}
1908
1909template <class _OutputIterator, class _Tp>
1910class _LIBCPP_TYPE_VIS_ONLY raw_storage_iterator
1911 : public iterator<output_iterator_tag,
1912 _Tp, // purposefully not C++03
1913 ptrdiff_t, // purposefully not C++03
1914 _Tp*, // purposefully not C++03
1915 raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03
1916{
1917private:
1918 _OutputIterator __x_;
1919public:
1920 _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {}
1921 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;}
1922 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element)
1923 {::new(&*__x_) _Tp(__element); return *this;}
1924#if _LIBCPP_STD_VER >= 14
1925 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element)
1926 {::new(&*__x_) _Tp(_VSTD::move(__element)); return *this;}
1927#endif
1928 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;}
1929 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int)
1930 {raw_storage_iterator __t(*this); ++__x_; return __t;}
1931#if _LIBCPP_STD_VER >= 14
1932 _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; }
1933#endif
1934};
1935
1936template <class _Tp>
1937pair<_Tp*, ptrdiff_t>
1938get_temporary_buffer(ptrdiff_t __n) _NOEXCEPT
1939{
1940 pair<_Tp*, ptrdiff_t> __r(0, 0);
1941 const ptrdiff_t __m = (~ptrdiff_t(0) ^
1942 ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1)))
1943 / sizeof(_Tp);
1944 if (__n > __m)
1945 __n = __m;
1946 while (__n > 0)
1947 {
1948 __r.first = static_cast<_Tp*>(::operator new(sz: __n * sizeof(_Tp), nothrow));
1949 if (__r.first)
1950 {
1951 __r.second = __n;
1952 break;
1953 }
1954 __n /= 2;
1955 }
1956 return __r;
1957}
1958
1959template <class _Tp>
1960inline _LIBCPP_INLINE_VISIBILITY
1961void return_temporary_buffer(_Tp* __p) _NOEXCEPT {::operator delete(__p);}
1962
1963template <class _Tp>
1964struct auto_ptr_ref
1965{
1966 _Tp* __ptr_;
1967};
1968
1969template<class _Tp>
1970class _LIBCPP_TYPE_VIS_ONLY auto_ptr
1971{
1972private:
1973 _Tp* __ptr_;
1974public:
1975 typedef _Tp element_type;
1976
1977 _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {}
1978 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {}
1979 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw()
1980 : __ptr_(__p.release()) {}
1981 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw()
1982 {reset(p: __p.release()); return *this;}
1983 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw()
1984 {reset(p: __p.release()); return *this;}
1985 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw()
1986 {reset(p: __p.__ptr_); return *this;}
1987 _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;}
1988
1989 _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw()
1990 {return *__ptr_;}
1991 _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;}
1992 _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;}
1993 _LIBCPP_INLINE_VISIBILITY _Tp* release() throw()
1994 {
1995 _Tp* __t = __ptr_;
1996 __ptr_ = 0;
1997 return __t;
1998 }
1999 _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw()
2000 {
2001 if (__ptr_ != __p)
2002 delete __ptr_;
2003 __ptr_ = __p;
2004 }
2005
2006 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {}
2007 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw()
2008 {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;}
2009 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw()
2010 {return auto_ptr<_Up>(release());}
2011};
2012
2013template <>
2014class _LIBCPP_TYPE_VIS_ONLY auto_ptr<void>
2015{
2016public:
2017 typedef void element_type;
2018};
2019
2020template <class _T1, class _T2, bool = is_same<typename remove_cv<_T1>::type,
2021 typename remove_cv<_T2>::type>::value,
2022 bool = is_empty<_T1>::value
2023 && !__libcpp_is_final<_T1>::value,
2024 bool = is_empty<_T2>::value
2025 && !__libcpp_is_final<_T2>::value
2026 >
2027struct __libcpp_compressed_pair_switch;
2028
2029template <class _T1, class _T2, bool IsSame>
2030struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, false> {enum {value = 0};};
2031
2032template <class _T1, class _T2, bool IsSame>
2033struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, true, false> {enum {value = 1};};
2034
2035template <class _T1, class _T2, bool IsSame>
2036struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, true> {enum {value = 2};};
2037
2038template <class _T1, class _T2>
2039struct __libcpp_compressed_pair_switch<_T1, _T2, false, true, true> {enum {value = 3};};
2040
2041template <class _T1, class _T2>
2042struct __libcpp_compressed_pair_switch<_T1, _T2, true, true, true> {enum {value = 1};};
2043
2044template <class _T1, class _T2, unsigned = __libcpp_compressed_pair_switch<_T1, _T2>::value>
2045class __libcpp_compressed_pair_imp;
2046
2047template <class _T1, class _T2>
2048class __libcpp_compressed_pair_imp<_T1, _T2, 0>
2049{
2050private:
2051 _T1 __first_;
2052 _T2 __second_;
2053public:
2054 typedef _T1 _T1_param;
2055 typedef _T2 _T2_param;
2056
2057 typedef typename remove_reference<_T1>::type& _T1_reference;
2058 typedef typename remove_reference<_T2>::type& _T2_reference;
2059
2060 typedef const typename remove_reference<_T1>::type& _T1_const_reference;
2061 typedef const typename remove_reference<_T2>::type& _T2_const_reference;
2062
2063 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __first_(), __second_() {}
2064 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1)
2065 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_() {}
2066 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2)
2067 : __first_(), __second_(_VSTD::forward<_T2_param>(__t2)) {}
2068 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2)
2069 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {}
2070
2071#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
2072
2073 _LIBCPP_INLINE_VISIBILITY
2074 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p)
2075 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value &&
2076 is_nothrow_copy_constructible<_T2>::value)
2077 : __first_(__p.first()),
2078 __second_(__p.second()) {}
2079
2080 _LIBCPP_INLINE_VISIBILITY
2081 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p)
2082 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value &&
2083 is_nothrow_copy_assignable<_T2>::value)
2084 {
2085 __first_ = __p.first();
2086 __second_ = __p.second();
2087 return *this;
2088 }
2089
2090 _LIBCPP_INLINE_VISIBILITY
2091 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p)
2092 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value &&
2093 is_nothrow_move_constructible<_T2>::value)
2094 : __first_(_VSTD::forward<_T1>(__p.first())),
2095 __second_(_VSTD::forward<_T2>(__p.second())) {}
2096
2097 _LIBCPP_INLINE_VISIBILITY
2098 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p)
2099 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value &&
2100 is_nothrow_move_assignable<_T2>::value)
2101 {
2102 __first_ = _VSTD::forward<_T1>(__p.first());
2103 __second_ = _VSTD::forward<_T2>(__p.second());
2104 return *this;
2105 }
2106
2107#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
2108
2109#ifndef _LIBCPP_HAS_NO_VARIADICS
2110
2111 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2>
2112 _LIBCPP_INLINE_VISIBILITY
2113 __libcpp_compressed_pair_imp(piecewise_construct_t __pc,
2114 tuple<_Args1...> __first_args,
2115 tuple<_Args2...> __second_args,
2116 __tuple_indices<_I1...>,
2117 __tuple_indices<_I2...>)
2118 : __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...),
2119 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...)
2120 {}
2121
2122#endif // _LIBCPP_HAS_NO_VARIADICS
2123
2124 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;}
2125 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;}
2126
2127 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;}
2128 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;}
2129
2130 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x)
2131 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value &&
2132 __is_nothrow_swappable<_T2>::value)
2133 {
2134 using _VSTD::swap;
2135 swap(__first_, __x.__first_);
2136 swap(__second_, __x.__second_);
2137 }
2138};
2139
2140template <class _T1, class _T2>
2141class __libcpp_compressed_pair_imp<_T1, _T2, 1>
2142 : private _T1
2143{
2144private:
2145 _T2 __second_;
2146public:
2147 typedef _T1 _T1_param;
2148 typedef _T2 _T2_param;
2149
2150 typedef _T1& _T1_reference;
2151 typedef typename remove_reference<_T2>::type& _T2_reference;
2152
2153 typedef const _T1& _T1_const_reference;
2154 typedef const typename remove_reference<_T2>::type& _T2_const_reference;
2155
2156 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __second_() {}
2157 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1)
2158 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_() {}
2159 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2)
2160 : __second_(_VSTD::forward<_T2_param>(__t2)) {}
2161 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2)
2162 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {}
2163
2164#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
2165
2166 _LIBCPP_INLINE_VISIBILITY
2167 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p)
2168 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value &&
2169 is_nothrow_copy_constructible<_T2>::value)
2170 : _T1(__p.first()), __second_(__p.second()) {}
2171
2172 _LIBCPP_INLINE_VISIBILITY
2173 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p)
2174 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value &&
2175 is_nothrow_copy_assignable<_T2>::value)
2176 {
2177 _T1::operator=(__p.first());
2178 __second_ = __p.second();
2179 return *this;
2180 }
2181
2182 _LIBCPP_INLINE_VISIBILITY
2183 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p)
2184 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value &&
2185 is_nothrow_move_constructible<_T2>::value)
2186 : _T1(_VSTD::move(__p.first())), __second_(_VSTD::forward<_T2>(__p.second())) {}
2187
2188 _LIBCPP_INLINE_VISIBILITY
2189 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p)
2190 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value &&
2191 is_nothrow_move_assignable<_T2>::value)
2192 {
2193 _T1::operator=(_VSTD::move(__p.first()));
2194 __second_ = _VSTD::forward<_T2>(__p.second());
2195 return *this;
2196 }
2197
2198#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
2199
2200#ifndef _LIBCPP_HAS_NO_VARIADICS
2201
2202 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2>
2203 _LIBCPP_INLINE_VISIBILITY
2204 __libcpp_compressed_pair_imp(piecewise_construct_t __pc,
2205 tuple<_Args1...> __first_args,
2206 tuple<_Args2...> __second_args,
2207 __tuple_indices<_I1...>,
2208 __tuple_indices<_I2...>)
2209 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...),
2210 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...)
2211 {}
2212
2213#endif // _LIBCPP_HAS_NO_VARIADICS
2214
2215 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;}
2216 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;}
2217
2218 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;}
2219 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;}
2220
2221 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x)
2222 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value &&
2223 __is_nothrow_swappable<_T2>::value)
2224 {
2225 using _VSTD::swap;
2226 swap(__second_, __x.__second_);
2227 }
2228};
2229
2230template <class _T1, class _T2>
2231class __libcpp_compressed_pair_imp<_T1, _T2, 2>
2232 : private _T2
2233{
2234private:
2235 _T1 __first_;
2236public:
2237 typedef _T1 _T1_param;
2238 typedef _T2 _T2_param;
2239
2240 typedef typename remove_reference<_T1>::type& _T1_reference;
2241 typedef _T2& _T2_reference;
2242
2243 typedef const typename remove_reference<_T1>::type& _T1_const_reference;
2244 typedef const _T2& _T2_const_reference;
2245
2246 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __first_() {}
2247 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1)
2248 : __first_(_VSTD::forward<_T1_param>(__t1)) {}
2249 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2)
2250 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_() {}
2251 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2)
2252 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value &&
2253 is_nothrow_move_constructible<_T2>::value)
2254 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_(_VSTD::forward<_T1_param>(__t1)) {}
2255
2256#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
2257
2258 _LIBCPP_INLINE_VISIBILITY
2259 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p)
2260 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value &&
2261 is_nothrow_copy_constructible<_T2>::value)
2262 : _T2(__p.second()), __first_(__p.first()) {}
2263
2264 _LIBCPP_INLINE_VISIBILITY
2265 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p)
2266 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value &&
2267 is_nothrow_copy_assignable<_T2>::value)
2268 {
2269 _T2::operator=(__p.second());
2270 __first_ = __p.first();
2271 return *this;
2272 }
2273
2274 _LIBCPP_INLINE_VISIBILITY
2275 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p)
2276 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value &&
2277 is_nothrow_move_constructible<_T2>::value)
2278 : _T2(_VSTD::forward<_T2>(__p.second())), __first_(_VSTD::move(__p.first())) {}
2279
2280 _LIBCPP_INLINE_VISIBILITY
2281 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p)
2282 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value &&
2283 is_nothrow_move_assignable<_T2>::value)
2284 {
2285 _T2::operator=(_VSTD::forward<_T2>(__p.second()));
2286 __first_ = _VSTD::move(__p.first());
2287 return *this;
2288 }
2289
2290#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
2291
2292#ifndef _LIBCPP_HAS_NO_VARIADICS
2293
2294 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2>
2295 _LIBCPP_INLINE_VISIBILITY
2296 __libcpp_compressed_pair_imp(piecewise_construct_t __pc,
2297 tuple<_Args1...> __first_args,
2298 tuple<_Args2...> __second_args,
2299 __tuple_indices<_I1...>,
2300 __tuple_indices<_I2...>)
2301 : _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...),
2302 __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...)
2303
2304 {}
2305
2306#endif // _LIBCPP_HAS_NO_VARIADICS
2307
2308 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;}
2309 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;}
2310
2311 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;}
2312 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;}
2313
2314 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x)
2315 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value &&
2316 __is_nothrow_swappable<_T2>::value)
2317 {
2318 using _VSTD::swap;
2319 swap(__first_, __x.__first_);
2320 }
2321};
2322
2323template <class _T1, class _T2>
2324class __libcpp_compressed_pair_imp<_T1, _T2, 3>
2325 : private _T1,
2326 private _T2
2327{
2328public:
2329 typedef _T1 _T1_param;
2330 typedef _T2 _T2_param;
2331
2332 typedef _T1& _T1_reference;
2333 typedef _T2& _T2_reference;
2334
2335 typedef const _T1& _T1_const_reference;
2336 typedef const _T2& _T2_const_reference;
2337
2338 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {}
2339 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1)
2340 : _T1(_VSTD::forward<_T1_param>(__t1)) {}
2341 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2)
2342 : _T2(_VSTD::forward<_T2_param>(__t2)) {}
2343 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2)
2344 : _T1(_VSTD::forward<_T1_param>(__t1)), _T2(_VSTD::forward<_T2_param>(__t2)) {}
2345
2346#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
2347
2348 _LIBCPP_INLINE_VISIBILITY
2349 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p)
2350 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value &&
2351 is_nothrow_copy_constructible<_T2>::value)
2352 : _T1(__p.first()), _T2(__p.second()) {}
2353
2354 _LIBCPP_INLINE_VISIBILITY
2355 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p)
2356 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value &&
2357 is_nothrow_copy_assignable<_T2>::value)
2358 {
2359 _T1::operator=(__p.first());
2360 _T2::operator=(__p.second());
2361 return *this;
2362 }
2363
2364 _LIBCPP_INLINE_VISIBILITY
2365 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p)
2366 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value &&
2367 is_nothrow_move_constructible<_T2>::value)
2368 : _T1(_VSTD::move(__p.first())), _T2(_VSTD::move(__p.second())) {}
2369
2370 _LIBCPP_INLINE_VISIBILITY
2371 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p)
2372 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value &&
2373 is_nothrow_move_assignable<_T2>::value)
2374 {
2375 _T1::operator=(_VSTD::move(__p.first()));
2376 _T2::operator=(_VSTD::move(__p.second()));
2377 return *this;
2378 }
2379
2380#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
2381
2382#ifndef _LIBCPP_HAS_NO_VARIADICS
2383
2384 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2>
2385 _LIBCPP_INLINE_VISIBILITY
2386 __libcpp_compressed_pair_imp(piecewise_construct_t __pc,
2387 tuple<_Args1...> __first_args,
2388 tuple<_Args2...> __second_args,
2389 __tuple_indices<_I1...>,
2390 __tuple_indices<_I2...>)
2391 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...),
2392 _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...)
2393 {}
2394
2395#endif // _LIBCPP_HAS_NO_VARIADICS
2396
2397 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;}
2398 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;}
2399
2400 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;}
2401 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;}
2402
2403 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp&)
2404 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value &&
2405 __is_nothrow_swappable<_T2>::value)
2406 {
2407 }
2408};
2409
2410template <class _T1, class _T2>
2411class __compressed_pair
2412 : private __libcpp_compressed_pair_imp<_T1, _T2>
2413{
2414 typedef __libcpp_compressed_pair_imp<_T1, _T2> base;
2415public:
2416 typedef typename base::_T1_param _T1_param;
2417 typedef typename base::_T2_param _T2_param;
2418
2419 typedef typename base::_T1_reference _T1_reference;
2420 typedef typename base::_T2_reference _T2_reference;
2421
2422 typedef typename base::_T1_const_reference _T1_const_reference;
2423 typedef typename base::_T2_const_reference _T2_const_reference;
2424
2425 _LIBCPP_INLINE_VISIBILITY __compressed_pair() {}
2426 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T1_param __t1)
2427 : base(_VSTD::forward<_T1_param>(__t1)) {}
2428 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T2_param __t2)
2429 : base(_VSTD::forward<_T2_param>(__t2)) {}
2430 _LIBCPP_INLINE_VISIBILITY __compressed_pair(_T1_param __t1, _T2_param __t2)
2431 : base(_VSTD::forward<_T1_param>(__t1), _VSTD::forward<_T2_param>(__t2)) {}
2432
2433#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
2434
2435 _LIBCPP_INLINE_VISIBILITY
2436 __compressed_pair(const __compressed_pair& __p)
2437 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value &&
2438 is_nothrow_copy_constructible<_T2>::value)
2439 : base(__p) {}
2440
2441 _LIBCPP_INLINE_VISIBILITY
2442 __compressed_pair& operator=(const __compressed_pair& __p)
2443 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value &&
2444 is_nothrow_copy_assignable<_T2>::value)
2445 {
2446 base::operator=(__p);
2447 return *this;
2448 }
2449
2450 _LIBCPP_INLINE_VISIBILITY
2451 __compressed_pair(__compressed_pair&& __p)
2452 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value &&
2453 is_nothrow_move_constructible<_T2>::value)
2454 : base(_VSTD::move(__p)) {}
2455
2456 _LIBCPP_INLINE_VISIBILITY
2457 __compressed_pair& operator=(__compressed_pair&& __p)
2458 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value &&
2459 is_nothrow_move_assignable<_T2>::value)
2460 {
2461 base::operator=(_VSTD::move(__p));
2462 return *this;
2463 }
2464
2465#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
2466
2467#ifndef _LIBCPP_HAS_NO_VARIADICS
2468
2469 template <class... _Args1, class... _Args2>
2470 _LIBCPP_INLINE_VISIBILITY
2471 __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args,
2472 tuple<_Args2...> __second_args)
2473 : base(__pc, _VSTD::move(__first_args), _VSTD::move(__second_args),
2474 typename __make_tuple_indices<sizeof...(_Args1)>::type(),
2475 typename __make_tuple_indices<sizeof...(_Args2) >::type())
2476 {}
2477
2478#endif // _LIBCPP_HAS_NO_VARIADICS
2479
2480 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return base::first();}
2481 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return base::first();}
2482
2483 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return base::second();}
2484 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return base::second();}
2485
2486 _LIBCPP_INLINE_VISIBILITY void swap(__compressed_pair& __x)
2487 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value &&
2488 __is_nothrow_swappable<_T2>::value)
2489 {base::swap(__x);}
2490};
2491
2492template <class _T1, class _T2>
2493inline _LIBCPP_INLINE_VISIBILITY
2494void
2495swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y)
2496 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value &&
2497 __is_nothrow_swappable<_T2>::value)
2498 {__x.swap(__y);}
2499
2500// __same_or_less_cv_qualified
2501
2502template <class _Ptr1, class _Ptr2,
2503 bool = is_same<typename remove_cv<typename pointer_traits<_Ptr1>::element_type>::type,
2504 typename remove_cv<typename pointer_traits<_Ptr2>::element_type>::type
2505 >::value
2506 >
2507struct __same_or_less_cv_qualified_imp
2508 : is_convertible<_Ptr1, _Ptr2> {};
2509
2510template <class _Ptr1, class _Ptr2>
2511struct __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2, false>
2512 : false_type {};
2513
2514template <class _Ptr1, class _Ptr2, bool = is_pointer<_Ptr1>::value ||
2515 is_same<_Ptr1, _Ptr2>::value ||
2516 __has_element_type<_Ptr1>::value>
2517struct __same_or_less_cv_qualified
2518 : __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2> {};
2519
2520template <class _Ptr1, class _Ptr2>
2521struct __same_or_less_cv_qualified<_Ptr1, _Ptr2, false>
2522 : false_type {};
2523
2524// default_delete
2525
2526template <class _Tp>
2527struct _LIBCPP_TYPE_VIS_ONLY default_delete
2528{
2529#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
2530 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default;
2531#else
2532 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {}
2533#endif
2534 template <class _Up>
2535 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up>&,
2536 typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {}
2537 _LIBCPP_INLINE_VISIBILITY void operator() (_Tp* __ptr) const _NOEXCEPT
2538 {
2539 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type");
2540 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type");
2541 delete __ptr;
2542 }
2543};
2544
2545template <class _Tp>
2546struct _LIBCPP_TYPE_VIS_ONLY default_delete<_Tp[]>
2547{
2548public:
2549#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
2550 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default;
2551#else
2552 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {}
2553#endif
2554 template <class _Up>
2555 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up[]>&,
2556 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {}
2557 template <class _Up>
2558 _LIBCPP_INLINE_VISIBILITY
2559 void operator() (_Up* __ptr,
2560 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) const _NOEXCEPT
2561 {
2562 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type");
2563 static_assert(!is_void<_Tp>::value, "default_delete can not delete void type");
2564 delete [] __ptr;
2565 }
2566};
2567
2568template <class _Tp, class _Dp = default_delete<_Tp> >
2569class _LIBCPP_TYPE_VIS_ONLY unique_ptr
2570{
2571public:
2572 typedef _Tp element_type;
2573 typedef _Dp deleter_type;
2574 typedef typename __pointer_type<_Tp, deleter_type>::type pointer;
2575private:
2576 __compressed_pair<pointer, deleter_type> __ptr_;
2577
2578#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES
2579 unique_ptr(unique_ptr&);
2580 template <class _Up, class _Ep>
2581 unique_ptr(unique_ptr<_Up, _Ep>&);
2582 unique_ptr& operator=(unique_ptr&);
2583 template <class _Up, class _Ep>
2584 unique_ptr& operator=(unique_ptr<_Up, _Ep>&);
2585#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
2586
2587 struct __nat {int __for_bool_;};
2588
2589 typedef typename remove_reference<deleter_type>::type& _Dp_reference;
2590 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference;
2591public:
2592 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT
2593 : __ptr_(pointer())
2594 {
2595 static_assert(!is_pointer<deleter_type>::value,
2596 "unique_ptr constructed with null function pointer deleter");
2597 }
2598 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT
2599 : __ptr_(pointer())
2600 {
2601 static_assert(!is_pointer<deleter_type>::value,
2602 "unique_ptr constructed with null function pointer deleter");
2603 }
2604 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) _NOEXCEPT
2605 : __ptr_(_VSTD::move(__p))
2606 {
2607 static_assert(!is_pointer<deleter_type>::value,
2608 "unique_ptr constructed with null function pointer deleter");
2609 }
2610
2611#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
2612 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename conditional<
2613 is_reference<deleter_type>::value,
2614 deleter_type,
2615 typename add_lvalue_reference<const deleter_type>::type>::type __d)
2616 _NOEXCEPT
2617 : __ptr_(__p, __d) {}
2618
2619 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename remove_reference<deleter_type>::type&& __d)
2620 _NOEXCEPT
2621 : __ptr_(__p, _VSTD::move(__d))
2622 {
2623 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference");
2624 }
2625 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT
2626 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {}
2627 template <class _Up, class _Ep>
2628 _LIBCPP_INLINE_VISIBILITY
2629 unique_ptr(unique_ptr<_Up, _Ep>&& __u,
2630 typename enable_if
2631 <
2632 !is_array<_Up>::value &&
2633 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value &&
2634 is_convertible<_Ep, deleter_type>::value &&
2635 (
2636 !is_reference<deleter_type>::value ||
2637 is_same<deleter_type, _Ep>::value
2638 ),
2639 __nat
2640 >::type = __nat()) _NOEXCEPT
2641 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {}
2642
2643 template <class _Up>
2644 _LIBCPP_INLINE_VISIBILITY unique_ptr(auto_ptr<_Up>&& __p,
2645 typename enable_if<
2646 is_convertible<_Up*, _Tp*>::value &&
2647 is_same<_Dp, default_delete<_Tp> >::value,
2648 __nat
2649 >::type = __nat()) _NOEXCEPT
2650 : __ptr_(__p.release())
2651 {
2652 }
2653
2654 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT
2655 {
2656 reset(p: __u.release());
2657 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter());
2658 return *this;
2659 }
2660
2661 template <class _Up, class _Ep>
2662 _LIBCPP_INLINE_VISIBILITY
2663 typename enable_if
2664 <
2665 !is_array<_Up>::value &&
2666 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value &&
2667 is_assignable<deleter_type&, _Ep&&>::value,
2668 unique_ptr&
2669 >::type
2670 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT
2671 {
2672 reset(p: __u.release());
2673 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter());
2674 return *this;
2675 }
2676#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
2677
2678 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>()
2679 {
2680 return __rv<unique_ptr>(*this);
2681 }
2682
2683 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u)
2684 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {}
2685
2686 template <class _Up, class _Ep>
2687 _LIBCPP_INLINE_VISIBILITY
2688 typename enable_if<
2689 !is_array<_Up>::value &&
2690 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value &&
2691 is_assignable<deleter_type&, _Ep&>::value,
2692 unique_ptr&
2693 >::type
2694 operator=(unique_ptr<_Up, _Ep> __u)
2695 {
2696 reset(__u.release());
2697 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter());
2698 return *this;
2699 }
2700
2701 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d)
2702 : __ptr_(_VSTD::move(__p), _VSTD::move(__d)) {}
2703
2704 template <class _Up>
2705 _LIBCPP_INLINE_VISIBILITY
2706 typename enable_if<
2707 is_convertible<_Up*, _Tp*>::value &&
2708 is_same<_Dp, default_delete<_Tp> >::value,
2709 unique_ptr&
2710 >::type
2711 operator=(auto_ptr<_Up> __p)
2712 {reset(__p.release()); return *this;}
2713
2714#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
2715 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();}
2716
2717 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT
2718 {
2719 reset();
2720 return *this;
2721 }
2722
2723 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator*() const
2724 {return *__ptr_.first();}
2725 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT {return __ptr_.first();}
2726 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();}
2727 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT
2728 {return __ptr_.second();}
2729 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT
2730 {return __ptr_.second();}
2731 _LIBCPP_INLINE_VISIBILITY
2732 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT
2733 {return __ptr_.first() != nullptr;}
2734
2735 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT
2736 {
2737 pointer __t = __ptr_.first();
2738 __ptr_.first() = pointer();
2739 return __t;
2740 }
2741
2742 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) _NOEXCEPT
2743 {
2744 pointer __tmp = __ptr_.first();
2745 __ptr_.first() = __p;
2746 if (__tmp)
2747 __ptr_.second()(__tmp);
2748 }
2749
2750 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) _NOEXCEPT
2751 {__ptr_.swap(__u.__ptr_);}
2752};
2753
2754template <class _Tp, class _Dp>
2755class _LIBCPP_TYPE_VIS_ONLY unique_ptr<_Tp[], _Dp>
2756{
2757public:
2758 typedef _Tp element_type;
2759 typedef _Dp deleter_type;
2760 typedef typename __pointer_type<_Tp, deleter_type>::type pointer;
2761private:
2762 __compressed_pair<pointer, deleter_type> __ptr_;
2763
2764#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES
2765 unique_ptr(unique_ptr&);
2766 template <class _Up>
2767 unique_ptr(unique_ptr<_Up>&);
2768 unique_ptr& operator=(unique_ptr&);
2769 template <class _Up>
2770 unique_ptr& operator=(unique_ptr<_Up>&);
2771#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
2772
2773 struct __nat {int __for_bool_;};
2774
2775 typedef typename remove_reference<deleter_type>::type& _Dp_reference;
2776 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference;
2777public:
2778 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT
2779 : __ptr_(pointer())
2780 {
2781 static_assert(!is_pointer<deleter_type>::value,
2782 "unique_ptr constructed with null function pointer deleter");
2783 }
2784 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT
2785 : __ptr_(pointer())
2786 {
2787 static_assert(!is_pointer<deleter_type>::value,
2788 "unique_ptr constructed with null function pointer deleter");
2789 }
2790#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
2791 template <class _Pp>
2792 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(_Pp __p,
2793 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) _NOEXCEPT
2794 : __ptr_(__p)
2795 {
2796 static_assert(!is_pointer<deleter_type>::value,
2797 "unique_ptr constructed with null function pointer deleter");
2798 }
2799
2800 template <class _Pp>
2801 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, typename conditional<
2802 is_reference<deleter_type>::value,
2803 deleter_type,
2804 typename add_lvalue_reference<const deleter_type>::type>::type __d,
2805 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat())
2806 _NOEXCEPT
2807 : __ptr_(__p, __d) {}
2808
2809 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename conditional<
2810 is_reference<deleter_type>::value,
2811 deleter_type,
2812 typename add_lvalue_reference<const deleter_type>::type>::type __d)
2813 _NOEXCEPT
2814 : __ptr_(pointer(), __d) {}
2815
2816 template <class _Pp>
2817 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p,
2818 typename remove_reference<deleter_type>::type&& __d,
2819 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat())
2820 _NOEXCEPT
2821 : __ptr_(__p, _VSTD::move(__d))
2822 {
2823 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference");
2824 }
2825
2826 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename remove_reference<deleter_type>::type&& __d)
2827 _NOEXCEPT
2828 : __ptr_(pointer(), _VSTD::move(__d))
2829 {
2830 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference");
2831 }
2832
2833 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT
2834 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {}
2835
2836 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT
2837 {
2838 reset(__u.release());
2839 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter());
2840 return *this;
2841 }
2842
2843 template <class _Up, class _Ep>
2844 _LIBCPP_INLINE_VISIBILITY
2845 unique_ptr(unique_ptr<_Up, _Ep>&& __u,
2846 typename enable_if
2847 <
2848 is_array<_Up>::value &&
2849 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value
2850 && is_convertible<_Ep, deleter_type>::value &&
2851 (
2852 !is_reference<deleter_type>::value ||
2853 is_same<deleter_type, _Ep>::value
2854 ),
2855 __nat
2856 >::type = __nat()
2857 ) _NOEXCEPT
2858 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {}
2859
2860
2861 template <class _Up, class _Ep>
2862 _LIBCPP_INLINE_VISIBILITY
2863 typename enable_if
2864 <
2865 is_array<_Up>::value &&
2866 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value &&
2867 is_assignable<deleter_type&, _Ep&&>::value,
2868 unique_ptr&
2869 >::type
2870 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT
2871 {
2872 reset(__u.release());
2873 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter());
2874 return *this;
2875 }
2876#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
2877
2878 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p)
2879 : __ptr_(__p)
2880 {
2881 static_assert(!is_pointer<deleter_type>::value,
2882 "unique_ptr constructed with null function pointer deleter");
2883 }
2884
2885 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d)
2886 : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {}
2887
2888 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, deleter_type __d)
2889 : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {}
2890
2891 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>()
2892 {
2893 return __rv<unique_ptr>(*this);
2894 }
2895
2896 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u)
2897 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {}
2898
2899 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(__rv<unique_ptr> __u)
2900 {
2901 reset(__u->release());
2902 __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter());
2903 return *this;
2904 }
2905
2906#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
2907 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();}
2908
2909 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT
2910 {
2911 reset();
2912 return *this;
2913 }
2914
2915 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator[](size_t __i) const
2916 {return __ptr_.first()[__i];}
2917 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();}
2918 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT
2919 {return __ptr_.second();}
2920 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT
2921 {return __ptr_.second();}
2922 _LIBCPP_INLINE_VISIBILITY
2923 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT
2924 {return __ptr_.first() != nullptr;}
2925
2926 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT
2927 {
2928 pointer __t = __ptr_.first();
2929 __ptr_.first() = pointer();
2930 return __t;
2931 }
2932
2933 template <class _Pp>
2934 _LIBCPP_INLINE_VISIBILITY
2935 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, void>::type
2936 reset(_Pp __p) _NOEXCEPT
2937 {
2938 pointer __tmp = __ptr_.first();
2939 __ptr_.first() = __p;
2940 if (__tmp)
2941 __ptr_.second()(__tmp);
2942 }
2943 _LIBCPP_INLINE_VISIBILITY void reset(nullptr_t = nullptr) _NOEXCEPT
2944 {
2945 pointer __tmp = __ptr_.first();
2946 __ptr_.first() = nullptr;
2947 if (__tmp)
2948 __ptr_.second()(__tmp);
2949 }
2950
2951 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);}
2952private:
2953
2954#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES
2955 template <class _Up>
2956 explicit unique_ptr(_Up);
2957 template <class _Up>
2958 unique_ptr(_Up __u,
2959 typename conditional<
2960 is_reference<deleter_type>::value,
2961 deleter_type,
2962 typename add_lvalue_reference<const deleter_type>::type>::type,
2963 typename enable_if
2964 <
2965 is_convertible<_Up, pointer>::value,
2966 __nat
2967 >::type = __nat());
2968#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
2969};
2970
2971template <class _Tp, class _Dp>
2972inline _LIBCPP_INLINE_VISIBILITY
2973typename enable_if<
2974 __is_swappable<_Dp>::value,
2975 void
2976>::type
2977swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);}
2978
2979template <class _T1, class _D1, class _T2, class _D2>
2980inline _LIBCPP_INLINE_VISIBILITY
2981bool
2982operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();}
2983
2984template <class _T1, class _D1, class _T2, class _D2>
2985inline _LIBCPP_INLINE_VISIBILITY
2986bool
2987operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);}
2988
2989template <class _T1, class _D1, class _T2, class _D2>
2990inline _LIBCPP_INLINE_VISIBILITY
2991bool
2992operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y)
2993{
2994 typedef typename unique_ptr<_T1, _D1>::pointer _P1;
2995 typedef typename unique_ptr<_T2, _D2>::pointer _P2;
2996 typedef typename common_type<_P1, _P2>::type _Vp;
2997 return less<_Vp>()(__x.get(), __y.get());
2998}
2999
3000template <class _T1, class _D1, class _T2, class _D2>
3001inline _LIBCPP_INLINE_VISIBILITY
3002bool
3003operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;}
3004
3005template <class _T1, class _D1, class _T2, class _D2>
3006inline _LIBCPP_INLINE_VISIBILITY
3007bool
3008operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);}
3009
3010template <class _T1, class _D1, class _T2, class _D2>
3011inline _LIBCPP_INLINE_VISIBILITY
3012bool
3013operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);}
3014
3015template <class _T1, class _D1>
3016inline _LIBCPP_INLINE_VISIBILITY
3017bool
3018operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT
3019{
3020 return !__x;
3021}
3022
3023template <class _T1, class _D1>
3024inline _LIBCPP_INLINE_VISIBILITY
3025bool
3026operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT
3027{
3028 return !__x;
3029}
3030
3031template <class _T1, class _D1>
3032inline _LIBCPP_INLINE_VISIBILITY
3033bool
3034operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT
3035{
3036 return static_cast<bool>(__x);
3037}
3038
3039template <class _T1, class _D1>
3040inline _LIBCPP_INLINE_VISIBILITY
3041bool
3042operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT
3043{
3044 return static_cast<bool>(__x);
3045}
3046
3047template <class _T1, class _D1>
3048inline _LIBCPP_INLINE_VISIBILITY
3049bool
3050operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t)
3051{
3052 typedef typename unique_ptr<_T1, _D1>::pointer _P1;
3053 return less<_P1>()(__x.get(), nullptr);
3054}
3055
3056template <class _T1, class _D1>
3057inline _LIBCPP_INLINE_VISIBILITY
3058bool
3059operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x)
3060{
3061 typedef typename unique_ptr<_T1, _D1>::pointer _P1;
3062 return less<_P1>()(nullptr, __x.get());
3063}
3064
3065template <class _T1, class _D1>
3066inline _LIBCPP_INLINE_VISIBILITY
3067bool
3068operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t)
3069{
3070 return nullptr < __x;
3071}
3072
3073template <class _T1, class _D1>
3074inline _LIBCPP_INLINE_VISIBILITY
3075bool
3076operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x)
3077{
3078 return __x < nullptr;
3079}
3080
3081template <class _T1, class _D1>
3082inline _LIBCPP_INLINE_VISIBILITY
3083bool
3084operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t)
3085{
3086 return !(nullptr < __x);
3087}
3088
3089template <class _T1, class _D1>
3090inline _LIBCPP_INLINE_VISIBILITY
3091bool
3092operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x)
3093{
3094 return !(__x < nullptr);
3095}
3096
3097template <class _T1, class _D1>
3098inline _LIBCPP_INLINE_VISIBILITY
3099bool
3100operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t)
3101{
3102 return !(__x < nullptr);
3103}
3104
3105template <class _T1, class _D1>
3106inline _LIBCPP_INLINE_VISIBILITY
3107bool
3108operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x)
3109{
3110 return !(nullptr < __x);
3111}
3112
3113#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3114
3115template <class _Tp, class _Dp>
3116inline _LIBCPP_INLINE_VISIBILITY
3117unique_ptr<_Tp, _Dp>
3118move(unique_ptr<_Tp, _Dp>& __t)
3119{
3120 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t));
3121}
3122
3123#endif
3124
3125#if _LIBCPP_STD_VER > 11
3126
3127template<class _Tp>
3128struct __unique_if
3129{
3130 typedef unique_ptr<_Tp> __unique_single;
3131};
3132
3133template<class _Tp>
3134struct __unique_if<_Tp[]>
3135{
3136 typedef unique_ptr<_Tp[]> __unique_array_unknown_bound;
3137};
3138
3139template<class _Tp, size_t _Np>
3140struct __unique_if<_Tp[_Np]>
3141{
3142 typedef void __unique_array_known_bound;
3143};
3144
3145template<class _Tp, class... _Args>
3146inline _LIBCPP_INLINE_VISIBILITY
3147typename __unique_if<_Tp>::__unique_single
3148make_unique(_Args&&... __args)
3149{
3150 return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...));
3151}
3152
3153template<class _Tp>
3154inline _LIBCPP_INLINE_VISIBILITY
3155typename __unique_if<_Tp>::__unique_array_unknown_bound
3156make_unique(size_t __n)
3157{
3158 typedef typename remove_extent<_Tp>::type _Up;
3159 return unique_ptr<_Tp>(new _Up[__n]());
3160}
3161
3162template<class _Tp, class... _Args>
3163 typename __unique_if<_Tp>::__unique_array_known_bound
3164 make_unique(_Args&&...) = delete;
3165
3166#endif // _LIBCPP_STD_VER > 11
3167
3168template <class _Size>
3169inline _LIBCPP_INLINE_VISIBILITY
3170_Size
3171__loadword(const void* __p)
3172{
3173 _Size __r;
3174 std::memcpy(&__r, __p, sizeof(__r));
3175 return __r;
3176}
3177
3178// We use murmur2 when size_t is 32 bits, and cityhash64 when size_t
3179// is 64 bits. This is because cityhash64 uses 64bit x 64bit
3180// multiplication, which can be very slow on 32-bit systems.
3181template <class _Size, size_t = sizeof(_Size)*__CHAR_BIT__>
3182struct __murmur2_or_cityhash;
3183
3184template <class _Size>
3185struct __murmur2_or_cityhash<_Size, 32>
3186{
3187 _Size operator()(const void* __key, _Size __len);
3188};
3189
3190// murmur2
3191template <class _Size>
3192_Size
3193__murmur2_or_cityhash<_Size, 32>::operator()(const void* __key, _Size __len) _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
3194{
3195 const _Size __m = 0x5bd1e995;
3196 const _Size __r = 24;
3197 _Size __h = __len;
3198 const unsigned char* __data = static_cast<const unsigned char*>(__key);
3199 for (; __len >= 4; __data += 4, __len -= 4)
3200 {
3201 _Size __k = __loadword<_Size>(__data);
3202 __k *= __m;
3203 __k ^= __k >> __r;
3204 __k *= __m;
3205 __h *= __m;
3206 __h ^= __k;
3207 }
3208 switch (__len)
3209 {
3210 case 3:
3211 __h ^= __data[2] << 16;
3212 case 2:
3213 __h ^= __data[1] << 8;
3214 case 1:
3215 __h ^= __data[0];
3216 __h *= __m;
3217 }
3218 __h ^= __h >> 13;
3219 __h *= __m;
3220 __h ^= __h >> 15;
3221 return __h;
3222}
3223
3224template <class _Size>
3225struct __murmur2_or_cityhash<_Size, 64>
3226{
3227 _Size operator()(const void* __key, _Size __len);
3228
3229 private:
3230 // Some primes between 2^63 and 2^64.
3231 static const _Size __k0 = 0xc3a5c85c97cb3127ULL;
3232 static const _Size __k1 = 0xb492b66fbe98f273ULL;
3233 static const _Size __k2 = 0x9ae16a3b2f90404fULL;
3234 static const _Size __k3 = 0xc949d7c7509e6557ULL;
3235
3236 static _Size __rotate(_Size __val, int __shift) {
3237 return __shift == 0 ? __val : ((__val >> __shift) | (__val << (64 - __shift)));
3238 }
3239
3240 static _Size __rotate_by_at_least_1(_Size __val, int __shift) {
3241 return (__val >> __shift) | (__val << (64 - __shift));
3242 }
3243
3244 static _Size __shift_mix(_Size __val) {
3245 return __val ^ (__val >> 47);
3246 }
3247
3248 static _Size __hash_len_16(_Size __u, _Size __v) {
3249 const _Size __mul = 0x9ddfea08eb382d69ULL;
3250 _Size __a = (__u ^ __v) * __mul;
3251 __a ^= (__a >> 47);
3252 _Size __b = (__v ^ __a) * __mul;
3253 __b ^= (__b >> 47);
3254 __b *= __mul;
3255 return __b;
3256 }
3257
3258 static _Size __hash_len_0_to_16(const char* __s, _Size __len) {
3259 if (__len > 8) {
3260 const _Size __a = __loadword<_Size>(__s);
3261 const _Size __b = __loadword<_Size>(__s + __len - 8);
3262 return __hash_len_16(u: __a, v: __rotate_by_at_least_1(val: __b + __len, shift: __len)) ^ __b;
3263 }
3264 if (__len >= 4) {
3265 const uint32_t __a = __loadword<uint32_t>(p: __s);
3266 const uint32_t __b = __loadword<uint32_t>(__s + __len - 4);
3267 return __hash_len_16(u: __len + (__a << 3), v: __b);
3268 }
3269 if (__len > 0) {
3270 const unsigned char __a = __s[0];
3271 const unsigned char __b = __s[__len >> 1];
3272 const unsigned char __c = __s[__len - 1];
3273 const uint32_t __y = static_cast<uint32_t>(__a) +
3274 (static_cast<uint32_t>(__b) << 8);
3275 const uint32_t __z = __len + (static_cast<uint32_t>(__c) << 2);
3276 return __shift_mix(val: __y * __k2 ^ __z * __k3) * __k2;
3277 }
3278 return __k2;
3279 }
3280
3281 static _Size __hash_len_17_to_32(const char *__s, _Size __len) {
3282 const _Size __a = __loadword<_Size>(__s) * __k1;
3283 const _Size __b = __loadword<_Size>(__s + 8);
3284 const _Size __c = __loadword<_Size>(__s + __len - 8) * __k2;
3285 const _Size __d = __loadword<_Size>(__s + __len - 16) * __k0;
3286 return __hash_len_16(u: __rotate(val: __a - __b, shift: 43) + __rotate(val: __c, shift: 30) + __d,
3287 v: __a + __rotate(val: __b ^ __k3, shift: 20) - __c + __len);
3288 }
3289
3290 // Return a 16-byte hash for 48 bytes. Quick and dirty.
3291 // Callers do best to use "random-looking" values for a and b.
3292 static pair<_Size, _Size> __weak_hash_len_32_with_seeds(
3293 _Size __w, _Size __x, _Size __y, _Size __z, _Size __a, _Size __b) {
3294 __a += __w;
3295 __b = __rotate(val: __b + __a + __z, shift: 21);
3296 const _Size __c = __a;
3297 __a += __x;
3298 __a += __y;
3299 __b += __rotate(val: __a, shift: 44);
3300 return pair<_Size, _Size>(__a + __z, __b + __c);
3301 }
3302
3303 // Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty.
3304 static pair<_Size, _Size> __weak_hash_len_32_with_seeds(
3305 const char* __s, _Size __a, _Size __b) {
3306 return __weak_hash_len_32_with_seeds(__loadword<_Size>(__s),
3307 __loadword<_Size>(__s + 8),
3308 __loadword<_Size>(__s + 16),
3309 __loadword<_Size>(__s + 24),
3310 __a,
3311 __b);
3312 }
3313
3314 // Return an 8-byte hash for 33 to 64 bytes.
3315 static _Size __hash_len_33_to_64(const char *__s, size_t __len) {
3316 _Size __z = __loadword<_Size>(__s + 24);
3317 _Size __a = __loadword<_Size>(__s) +
3318 (__len + __loadword<_Size>(__s + __len - 16)) * __k0;
3319 _Size __b = __rotate(val: __a + __z, shift: 52);
3320 _Size __c = __rotate(val: __a, shift: 37);
3321 __a += __loadword<_Size>(__s + 8);
3322 __c += __rotate(val: __a, shift: 7);
3323 __a += __loadword<_Size>(__s + 16);
3324 _Size __vf = __a + __z;
3325 _Size __vs = __b + __rotate(val: __a, shift: 31) + __c;
3326 __a = __loadword<_Size>(__s + 16) + __loadword<_Size>(__s + __len - 32);
3327 __z += __loadword<_Size>(__s + __len - 8);
3328 __b = __rotate(val: __a + __z, shift: 52);
3329 __c = __rotate(val: __a, shift: 37);
3330 __a += __loadword<_Size>(__s + __len - 24);
3331 __c += __rotate(val: __a, shift: 7);
3332 __a += __loadword<_Size>(__s + __len - 16);
3333 _Size __wf = __a + __z;
3334 _Size __ws = __b + __rotate(val: __a, shift: 31) + __c;
3335 _Size __r = __shift_mix(val: (__vf + __ws) * __k2 + (__wf + __vs) * __k0);
3336 return __shift_mix(val: __r * __k0 + __vs) * __k2;
3337 }
3338};
3339
3340// cityhash64
3341template <class _Size>
3342_Size
3343__murmur2_or_cityhash<_Size, 64>::operator()(const void* __key, _Size __len) _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
3344{
3345 const char* __s = static_cast<const char*>(__key);
3346 if (__len <= 32) {
3347 if (__len <= 16) {
3348 return __hash_len_0_to_16(__s, __len);
3349 } else {
3350 return __hash_len_17_to_32(__s, __len);
3351 }
3352 } else if (__len <= 64) {
3353 return __hash_len_33_to_64(__s, __len);
3354 }
3355
3356 // For strings over 64 bytes we hash the end first, and then as we
3357 // loop we keep 56 bytes of state: v, w, x, y, and z.
3358 _Size __x = __loadword<_Size>(__s + __len - 40);
3359 _Size __y = __loadword<_Size>(__s + __len - 16) +
3360 __loadword<_Size>(__s + __len - 56);
3361 _Size __z = __hash_len_16(u: __loadword<_Size>(__s + __len - 48) + __len,
3362 v: __loadword<_Size>(__s + __len - 24));
3363 pair<_Size, _Size> __v = __weak_hash_len_32_with_seeds(__s + __len - 64, __len, __z);
3364 pair<_Size, _Size> __w = __weak_hash_len_32_with_seeds(__s + __len - 32, __y + __k1, __x);
3365 __x = __x * __k1 + __loadword<_Size>(__s);
3366
3367 // Decrease len to the nearest multiple of 64, and operate on 64-byte chunks.
3368 __len = (__len - 1) & ~static_cast<_Size>(63);
3369 do {
3370 __x = __rotate(val: __x + __y + __v.first + __loadword<_Size>(__s + 8), shift: 37) * __k1;
3371 __y = __rotate(val: __y + __v.second + __loadword<_Size>(__s + 48), shift: 42) * __k1;
3372 __x ^= __w.second;
3373 __y += __v.first + __loadword<_Size>(__s + 40);
3374 __z = __rotate(val: __z + __w.first, shift: 33) * __k1;
3375 __v = __weak_hash_len_32_with_seeds(__s, __v.second * __k1, __x + __w.first);
3376 __w = __weak_hash_len_32_with_seeds(__s + 32, __z + __w.second,
3377 __y + __loadword<_Size>(__s + 16));
3378 std::swap(__z, __x);
3379 __s += 64;
3380 __len -= 64;
3381 } while (__len != 0);
3382 return __hash_len_16(
3383 u: __hash_len_16(u: __v.first, v: __w.first) + __shift_mix(val: __y) * __k1 + __z,
3384 v: __hash_len_16(u: __v.second, v: __w.second) + __x);
3385}
3386
3387template <class _Tp, size_t = sizeof(_Tp) / sizeof(size_t)>
3388struct __scalar_hash;
3389
3390template <class _Tp>
3391struct __scalar_hash<_Tp, 0>
3392 : public unary_function<_Tp, size_t>
3393{
3394 _LIBCPP_INLINE_VISIBILITY
3395 size_t operator()(_Tp __v) const _NOEXCEPT
3396 {
3397 union
3398 {
3399 _Tp __t;
3400 size_t __a;
3401 } __u;
3402 __u.__a = 0;
3403 __u.__t = __v;
3404 return __u.__a;
3405 }
3406};
3407
3408template <class _Tp>
3409struct __scalar_hash<_Tp, 1>
3410 : public unary_function<_Tp, size_t>
3411{
3412 _LIBCPP_INLINE_VISIBILITY
3413 size_t operator()(_Tp __v) const _NOEXCEPT
3414 {
3415 union
3416 {
3417 _Tp __t;
3418 size_t __a;
3419 } __u;
3420 __u.__t = __v;
3421 return __u.__a;
3422 }
3423};
3424
3425template <class _Tp>
3426struct __scalar_hash<_Tp, 2>
3427 : public unary_function<_Tp, size_t>
3428{
3429 _LIBCPP_INLINE_VISIBILITY
3430 size_t operator()(_Tp __v) const _NOEXCEPT
3431 {
3432 union
3433 {
3434 _Tp __t;
3435 struct
3436 {
3437 size_t __a;
3438 size_t __b;
3439 } __s;
3440 } __u;
3441 __u.__t = __v;
3442 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u));
3443 }
3444};
3445
3446template <class _Tp>
3447struct __scalar_hash<_Tp, 3>
3448 : public unary_function<_Tp, size_t>
3449{
3450 _LIBCPP_INLINE_VISIBILITY
3451 size_t operator()(_Tp __v) const _NOEXCEPT
3452 {
3453 union
3454 {
3455 _Tp __t;
3456 struct
3457 {
3458 size_t __a;
3459 size_t __b;
3460 size_t __c;
3461 } __s;
3462 } __u;
3463 __u.__t = __v;
3464 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u));
3465 }
3466};
3467
3468template <class _Tp>
3469struct __scalar_hash<_Tp, 4>
3470 : public unary_function<_Tp, size_t>
3471{
3472 _LIBCPP_INLINE_VISIBILITY
3473 size_t operator()(_Tp __v) const _NOEXCEPT
3474 {
3475 union
3476 {
3477 _Tp __t;
3478 struct
3479 {
3480 size_t __a;
3481 size_t __b;
3482 size_t __c;
3483 size_t __d;
3484 } __s;
3485 } __u;
3486 __u.__t = __v;
3487 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u));
3488 }
3489};
3490
3491template<class _Tp>
3492struct _LIBCPP_TYPE_VIS_ONLY hash<_Tp*>
3493 : public unary_function<_Tp*, size_t>
3494{
3495 _LIBCPP_INLINE_VISIBILITY
3496 size_t operator()(_Tp* __v) const _NOEXCEPT
3497 {
3498 union
3499 {
3500 _Tp* __t;
3501 size_t __a;
3502 } __u;
3503 __u.__t = __v;
3504 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u));
3505 }
3506};
3507
3508template <class _Tp, class _Dp>
3509struct _LIBCPP_TYPE_VIS_ONLY hash<unique_ptr<_Tp, _Dp> >
3510{
3511 typedef unique_ptr<_Tp, _Dp> argument_type;
3512 typedef size_t result_type;
3513 _LIBCPP_INLINE_VISIBILITY
3514 result_type operator()(const argument_type& __ptr) const _NOEXCEPT
3515 {
3516 typedef typename argument_type::pointer pointer;
3517 return hash<pointer>()(__ptr.get());
3518 }
3519};
3520
3521struct __destruct_n
3522{
3523private:
3524 size_t size;
3525
3526 template <class _Tp>
3527 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT
3528 {for (size_t __i = 0; __i < size; ++__i, ++__p) __p->~_Tp();}
3529
3530 template <class _Tp>
3531 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT
3532 {}
3533
3534 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT
3535 {++size;}
3536 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT
3537 {}
3538
3539 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT
3540 {size = __s;}
3541 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT
3542 {}
3543public:
3544 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT
3545 : size(__s) {}
3546
3547 template <class _Tp>
3548 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT
3549 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
3550
3551 template <class _Tp>
3552 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT
3553 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
3554
3555 template <class _Tp>
3556 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT
3557 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
3558};
3559
3560template <class _Alloc>
3561class __allocator_destructor
3562{
3563 typedef allocator_traits<_Alloc> __alloc_traits;
3564public:
3565 typedef typename __alloc_traits::pointer pointer;
3566 typedef typename __alloc_traits::size_type size_type;
3567private:
3568 _Alloc& __alloc_;
3569 size_type __s_;
3570public:
3571 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s)
3572 _NOEXCEPT
3573 : __alloc_(__a), __s_(__s) {}
3574 _LIBCPP_INLINE_VISIBILITY
3575 void operator()(pointer __p) _NOEXCEPT
3576 {__alloc_traits::deallocate(__alloc_, __p, __s_);}
3577};
3578
3579template <class _InputIterator, class _ForwardIterator>
3580_ForwardIterator
3581uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r)
3582{
3583 typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3584#ifndef _LIBCPP_NO_EXCEPTIONS
3585 _ForwardIterator __s = __r;
3586 try
3587 {
3588#endif
3589 for (; __f != __l; ++__f, (void) ++__r)
3590 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f);
3591#ifndef _LIBCPP_NO_EXCEPTIONS
3592 }
3593 catch (...)
3594 {
3595 for (; __s != __r; ++__s)
3596 __s->~value_type();
3597 throw;
3598 }
3599#endif
3600 return __r;
3601}
3602
3603template <class _InputIterator, class _Size, class _ForwardIterator>
3604_ForwardIterator
3605uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r)
3606{
3607 typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3608#ifndef _LIBCPP_NO_EXCEPTIONS
3609 _ForwardIterator __s = __r;
3610 try
3611 {
3612#endif
3613 for (; __n > 0; ++__f, (void) ++__r, (void) --__n)
3614 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f);
3615#ifndef _LIBCPP_NO_EXCEPTIONS
3616 }
3617 catch (...)
3618 {
3619 for (; __s != __r; ++__s)
3620 __s->~value_type();
3621 throw;
3622 }
3623#endif
3624 return __r;
3625}
3626
3627template <class _ForwardIterator, class _Tp>
3628void
3629uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x)
3630{
3631 typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3632#ifndef _LIBCPP_NO_EXCEPTIONS
3633 _ForwardIterator __s = __f;
3634 try
3635 {
3636#endif
3637 for (; __f != __l; ++__f)
3638 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x);
3639#ifndef _LIBCPP_NO_EXCEPTIONS
3640 }
3641 catch (...)
3642 {
3643 for (; __s != __f; ++__s)
3644 __s->~value_type();
3645 throw;
3646 }
3647#endif
3648}
3649
3650template <class _ForwardIterator, class _Size, class _Tp>
3651_ForwardIterator
3652uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x)
3653{
3654 typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
3655#ifndef _LIBCPP_NO_EXCEPTIONS
3656 _ForwardIterator __s = __f;
3657 try
3658 {
3659#endif
3660 for (; __n > 0; ++__f, (void) --__n)
3661 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x);
3662#ifndef _LIBCPP_NO_EXCEPTIONS
3663 }
3664 catch (...)
3665 {
3666 for (; __s != __f; ++__s)
3667 __s->~value_type();
3668 throw;
3669 }
3670#endif
3671 return __f;
3672}
3673
3674class _LIBCPP_EXCEPTION_ABI bad_weak_ptr
3675 : public std::exception
3676{
3677public:
3678 virtual ~bad_weak_ptr() _NOEXCEPT;
3679 virtual const char* what() const _NOEXCEPT;
3680};
3681
3682template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY weak_ptr;
3683
3684class _LIBCPP_TYPE_VIS __shared_count
3685{
3686 __shared_count(const __shared_count&);
3687 __shared_count& operator=(const __shared_count&);
3688
3689protected:
3690 long __shared_owners_;
3691 virtual ~__shared_count();
3692private:
3693 virtual void __on_zero_shared() _NOEXCEPT = 0;
3694
3695public:
3696 _LIBCPP_INLINE_VISIBILITY
3697 explicit __shared_count(long __refs = 0) _NOEXCEPT
3698 : __shared_owners_(__refs) {}
3699
3700 void __add_shared() _NOEXCEPT;
3701 bool __release_shared() _NOEXCEPT;
3702 _LIBCPP_INLINE_VISIBILITY
3703 long use_count() const _NOEXCEPT {
3704 return __libcpp_relaxed_load(value: &__shared_owners_) + 1;
3705 }
3706};
3707
3708class _LIBCPP_TYPE_VIS __shared_weak_count
3709 : private __shared_count
3710{
3711 long __shared_weak_owners_;
3712
3713public:
3714 _LIBCPP_INLINE_VISIBILITY
3715 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT
3716 : __shared_count(__refs),
3717 __shared_weak_owners_(__refs) {}
3718protected:
3719 virtual ~__shared_weak_count();
3720
3721public:
3722 void __add_shared() _NOEXCEPT;
3723 void __add_weak() _NOEXCEPT;
3724 void __release_shared() _NOEXCEPT;
3725 void __release_weak() _NOEXCEPT;
3726 _LIBCPP_INLINE_VISIBILITY
3727 long use_count() const _NOEXCEPT {return __shared_count::use_count();}
3728 __shared_weak_count* lock() _NOEXCEPT;
3729
3730 // Define the function out only if we build static libc++ without RTTI.
3731 // Otherwise we may break clients who need to compile their projects with
3732 // -fno-rtti and yet link against a libc++.dylib compiled
3733 // without -fno-rtti.
3734#if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC)
3735 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT;
3736#endif
3737private:
3738 virtual void __on_zero_shared_weak() _NOEXCEPT = 0;
3739};
3740
3741template <class _Tp, class _Dp, class _Alloc>
3742class __shared_ptr_pointer
3743 : public __shared_weak_count
3744{
3745 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_;
3746public:
3747 _LIBCPP_INLINE_VISIBILITY
3748 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a)
3749 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {}
3750
3751#ifndef _LIBCPP_NO_RTTI
3752 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT;
3753#endif
3754
3755private:
3756 virtual void __on_zero_shared() _NOEXCEPT;
3757 virtual void __on_zero_shared_weak() _NOEXCEPT;
3758};
3759
3760#ifndef _LIBCPP_NO_RTTI
3761
3762template <class _Tp, class _Dp, class _Alloc>
3763const void*
3764__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT
3765{
3766 return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : 0;
3767}
3768
3769#endif // _LIBCPP_NO_RTTI
3770
3771template <class _Tp, class _Dp, class _Alloc>
3772void
3773__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT
3774{
3775 __data_.first().second()(__data_.first().first());
3776 __data_.first().second().~_Dp();
3777}
3778
3779template <class _Tp, class _Dp, class _Alloc>
3780void
3781__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT
3782{
3783 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al;
3784 typedef allocator_traits<_Al> _ATraits;
3785 typedef pointer_traits<typename _ATraits::pointer> _PTraits;
3786
3787 _Al __a(__data_.second());
3788 __data_.second().~_Alloc();
3789 __a.deallocate(_PTraits::pointer_to(*this), 1);
3790}
3791
3792template <class _Tp, class _Alloc>
3793class __shared_ptr_emplace
3794 : public __shared_weak_count
3795{
3796 __compressed_pair<_Alloc, _Tp> __data_;
3797public:
3798#ifndef _LIBCPP_HAS_NO_VARIADICS
3799
3800 _LIBCPP_INLINE_VISIBILITY
3801 __shared_ptr_emplace(_Alloc __a)
3802 : __data_(_VSTD::move(__a)) {}
3803
3804 template <class ..._Args>
3805 _LIBCPP_INLINE_VISIBILITY
3806 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args)
3807 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a),
3808 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {}
3809
3810#else // _LIBCPP_HAS_NO_VARIADICS
3811
3812 _LIBCPP_INLINE_VISIBILITY
3813 __shared_ptr_emplace(_Alloc __a)
3814 : __data_(__a) {}
3815
3816 template <class _A0>
3817 _LIBCPP_INLINE_VISIBILITY
3818 __shared_ptr_emplace(_Alloc __a, _A0& __a0)
3819 : __data_(__a, _Tp(__a0)) {}
3820
3821 template <class _A0, class _A1>
3822 _LIBCPP_INLINE_VISIBILITY
3823 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1)
3824 : __data_(__a, _Tp(__a0, __a1)) {}
3825
3826 template <class _A0, class _A1, class _A2>
3827 _LIBCPP_INLINE_VISIBILITY
3828 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2)
3829 : __data_(__a, _Tp(__a0, __a1, __a2)) {}
3830
3831#endif // _LIBCPP_HAS_NO_VARIADICS
3832
3833private:
3834 virtual void __on_zero_shared() _NOEXCEPT;
3835 virtual void __on_zero_shared_weak() _NOEXCEPT;
3836public:
3837 _LIBCPP_INLINE_VISIBILITY
3838 _Tp* get() _NOEXCEPT {return &__data_.second();}
3839};
3840
3841template <class _Tp, class _Alloc>
3842void
3843__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT
3844{
3845 __data_.second().~_Tp();
3846}
3847
3848template <class _Tp, class _Alloc>
3849void
3850__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT
3851{
3852 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type _Al;
3853 typedef allocator_traits<_Al> _ATraits;
3854 typedef pointer_traits<typename _ATraits::pointer> _PTraits;
3855 _Al __a(__data_.first());
3856 __data_.first().~_Alloc();
3857 __a.deallocate(_PTraits::pointer_to(*this), 1);
3858}
3859
3860template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this;
3861
3862template<class _Tp>
3863class _LIBCPP_TYPE_VIS_ONLY shared_ptr
3864{
3865public:
3866 typedef _Tp element_type;
3867#if _LIBCPP_STD_VER > 14
3868 typedef weak_ptr<_Tp> weak_type;
3869#endif
3870private:
3871 element_type* __ptr_;
3872 __shared_weak_count* __cntrl_;
3873
3874 struct __nat {int __for_bool_;};
3875public:
3876 _LIBCPP_INLINE_VISIBILITY
3877 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT;
3878 _LIBCPP_INLINE_VISIBILITY
3879 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT;
3880 template<class _Yp>
3881 explicit shared_ptr(_Yp* __p,
3882 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3883 template<class _Yp, class _Dp>
3884 shared_ptr(_Yp* __p, _Dp __d,
3885 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3886 template<class _Yp, class _Dp, class _Alloc>
3887 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a,
3888 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3889 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d);
3890 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a);
3891 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT;
3892 _LIBCPP_INLINE_VISIBILITY
3893 shared_ptr(const shared_ptr& __r) _NOEXCEPT;
3894 template<class _Yp>
3895 _LIBCPP_INLINE_VISIBILITY
3896 shared_ptr(const shared_ptr<_Yp>& __r,
3897 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat())
3898 _NOEXCEPT;
3899#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3900 _LIBCPP_INLINE_VISIBILITY
3901 shared_ptr(shared_ptr&& __r) _NOEXCEPT;
3902 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(shared_ptr<_Yp>&& __r,
3903 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat())
3904 _NOEXCEPT;
3905#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3906 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r,
3907 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type= __nat());
3908#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3909 template<class _Yp>
3910 shared_ptr(auto_ptr<_Yp>&& __r,
3911 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3912#else
3913 template<class _Yp>
3914 shared_ptr(auto_ptr<_Yp> __r,
3915 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
3916#endif
3917#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3918 template <class _Yp, class _Dp>
3919 shared_ptr(unique_ptr<_Yp, _Dp>&&,
3920 typename enable_if
3921 <
3922 !is_lvalue_reference<_Dp>::value &&
3923 !is_array<_Yp>::value &&
3924 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3925 __nat
3926 >::type = __nat());
3927 template <class _Yp, class _Dp>
3928 shared_ptr(unique_ptr<_Yp, _Dp>&&,
3929 typename enable_if
3930 <
3931 is_lvalue_reference<_Dp>::value &&
3932 !is_array<_Yp>::value &&
3933 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3934 __nat
3935 >::type = __nat());
3936#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3937 template <class _Yp, class _Dp>
3938 shared_ptr(unique_ptr<_Yp, _Dp>,
3939 typename enable_if
3940 <
3941 !is_lvalue_reference<_Dp>::value &&
3942 !is_array<_Yp>::value &&
3943 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3944 __nat
3945 >::type = __nat());
3946 template <class _Yp, class _Dp>
3947 shared_ptr(unique_ptr<_Yp, _Dp>,
3948 typename enable_if
3949 <
3950 is_lvalue_reference<_Dp>::value &&
3951 !is_array<_Yp>::value &&
3952 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
3953 __nat
3954 >::type = __nat());
3955#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3956
3957 ~shared_ptr();
3958
3959 _LIBCPP_INLINE_VISIBILITY
3960 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT;
3961 template<class _Yp>
3962 typename enable_if
3963 <
3964 is_convertible<_Yp*, element_type*>::value,
3965 shared_ptr&
3966 >::type
3967 _LIBCPP_INLINE_VISIBILITY
3968 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT;
3969#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
3970 _LIBCPP_INLINE_VISIBILITY
3971 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT;
3972 template<class _Yp>
3973 typename enable_if
3974 <
3975 is_convertible<_Yp*, element_type*>::value,
3976 shared_ptr<_Tp>&
3977 >::type
3978 _LIBCPP_INLINE_VISIBILITY
3979 operator=(shared_ptr<_Yp>&& __r);
3980 template<class _Yp>
3981 _LIBCPP_INLINE_VISIBILITY
3982 typename enable_if
3983 <
3984 !is_array<_Yp>::value &&
3985 is_convertible<_Yp*, element_type*>::value,
3986 shared_ptr
3987 >::type&
3988 operator=(auto_ptr<_Yp>&& __r);
3989#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
3990 template<class _Yp>
3991 _LIBCPP_INLINE_VISIBILITY
3992 typename enable_if
3993 <
3994 !is_array<_Yp>::value &&
3995 is_convertible<_Yp*, element_type*>::value,
3996 shared_ptr&
3997 >::type
3998 operator=(auto_ptr<_Yp> __r);
3999#endif
4000 template <class _Yp, class _Dp>
4001 typename enable_if
4002 <
4003 !is_array<_Yp>::value &&
4004 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
4005 shared_ptr&
4006 >::type
4007#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4008 _LIBCPP_INLINE_VISIBILITY
4009 operator=(unique_ptr<_Yp, _Dp>&& __r);
4010#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4011 _LIBCPP_INLINE_VISIBILITY
4012 operator=(unique_ptr<_Yp, _Dp> __r);
4013#endif
4014
4015 _LIBCPP_INLINE_VISIBILITY
4016 void swap(shared_ptr& __r) _NOEXCEPT;
4017 _LIBCPP_INLINE_VISIBILITY
4018 void reset() _NOEXCEPT;
4019 template<class _Yp>
4020 typename enable_if
4021 <
4022 is_convertible<_Yp*, element_type*>::value,
4023 void
4024 >::type
4025 _LIBCPP_INLINE_VISIBILITY
4026 reset(_Yp* __p);
4027 template<class _Yp, class _Dp>
4028 typename enable_if
4029 <
4030 is_convertible<_Yp*, element_type*>::value,
4031 void
4032 >::type
4033 _LIBCPP_INLINE_VISIBILITY
4034 reset(_Yp* __p, _Dp __d);
4035 template<class _Yp, class _Dp, class _Alloc>
4036 typename enable_if
4037 <
4038 is_convertible<_Yp*, element_type*>::value,
4039 void
4040 >::type
4041 _LIBCPP_INLINE_VISIBILITY
4042 reset(_Yp* __p, _Dp __d, _Alloc __a);
4043
4044 _LIBCPP_INLINE_VISIBILITY
4045 element_type* get() const _NOEXCEPT {return __ptr_;}
4046 _LIBCPP_INLINE_VISIBILITY
4047 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT
4048 {return *__ptr_;}
4049 _LIBCPP_INLINE_VISIBILITY
4050 element_type* operator->() const _NOEXCEPT {return __ptr_;}
4051 _LIBCPP_INLINE_VISIBILITY
4052 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;}
4053 _LIBCPP_INLINE_VISIBILITY
4054 bool unique() const _NOEXCEPT {return use_count() == 1;}
4055 _LIBCPP_INLINE_VISIBILITY
4056 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;}
4057 template <class _Up>
4058 _LIBCPP_INLINE_VISIBILITY
4059 bool owner_before(shared_ptr<_Up> const& __p) const
4060 {return __cntrl_ < __p.__cntrl_;}
4061 template <class _Up>
4062 _LIBCPP_INLINE_VISIBILITY
4063 bool owner_before(weak_ptr<_Up> const& __p) const
4064 {return __cntrl_ < __p.__cntrl_;}
4065 _LIBCPP_INLINE_VISIBILITY
4066 bool
4067 __owner_equivalent(const shared_ptr& __p) const
4068 {return __cntrl_ == __p.__cntrl_;}
4069
4070#ifndef _LIBCPP_NO_RTTI
4071 template <class _Dp>
4072 _LIBCPP_INLINE_VISIBILITY
4073 _Dp* __get_deleter() const _NOEXCEPT
4074 {return (_Dp*)(__cntrl_ ? __cntrl_->__get_deleter(typeid(_Dp)) : 0);}
4075#endif // _LIBCPP_NO_RTTI
4076
4077#ifndef _LIBCPP_HAS_NO_VARIADICS
4078
4079 template<class ..._Args>
4080 static
4081 shared_ptr<_Tp>
4082 make_shared(_Args&& ...__args);
4083
4084 template<class _Alloc, class ..._Args>
4085 static
4086 shared_ptr<_Tp>
4087 allocate_shared(const _Alloc& __a, _Args&& ...__args);
4088
4089#else // _LIBCPP_HAS_NO_VARIADICS
4090
4091 static shared_ptr<_Tp> make_shared();
4092
4093 template<class _A0>
4094 static shared_ptr<_Tp> make_shared(_A0&);
4095
4096 template<class _A0, class _A1>
4097 static shared_ptr<_Tp> make_shared(_A0&, _A1&);
4098
4099 template<class _A0, class _A1, class _A2>
4100 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&);
4101
4102 template<class _Alloc>
4103 static shared_ptr<_Tp>
4104 allocate_shared(const _Alloc& __a);
4105
4106 template<class _Alloc, class _A0>
4107 static shared_ptr<_Tp>
4108 allocate_shared(const _Alloc& __a, _A0& __a0);
4109
4110 template<class _Alloc, class _A0, class _A1>
4111 static shared_ptr<_Tp>
4112 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1);
4113
4114 template<class _Alloc, class _A0, class _A1, class _A2>
4115 static shared_ptr<_Tp>
4116 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2);
4117
4118#endif // _LIBCPP_HAS_NO_VARIADICS
4119
4120private:
4121
4122 template <class _Yp, class _OrigPtr>
4123 _LIBCPP_INLINE_VISIBILITY
4124 void
4125 __enable_weak_this(const enable_shared_from_this<_Yp>* __e,
4126 _OrigPtr* __ptr) _NOEXCEPT
4127 {
4128 typedef typename remove_cv<_Yp>::type _RawYp;
4129 if (__e && __e->__weak_this_.expired())
4130 {
4131 __e->__weak_this_ = shared_ptr<_RawYp>(*this,
4132 const_cast<_RawYp*>(static_cast<const _Yp*>(__ptr)));
4133 }
4134 }
4135
4136 _LIBCPP_INLINE_VISIBILITY
4137 void __enable_weak_this(const volatile void*, const volatile void*) _NOEXCEPT {}
4138
4139 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr;
4140 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr;
4141};
4142
4143template<class _Tp>
4144inline
4145_LIBCPP_CONSTEXPR
4146shared_ptr<_Tp>::shared_ptr() _NOEXCEPT
4147 : __ptr_(0),
4148 __cntrl_(0)
4149{
4150}
4151
4152template<class _Tp>
4153inline
4154_LIBCPP_CONSTEXPR
4155shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT
4156 : __ptr_(0),
4157 __cntrl_(0)
4158{
4159}
4160
4161template<class _Tp>
4162template<class _Yp>
4163shared_ptr<_Tp>::shared_ptr(_Yp* __p,
4164 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4165 : __ptr_(__p)
4166{
4167 unique_ptr<_Yp> __hold(__p);
4168 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk;
4169 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), allocator<_Yp>());
4170 __hold.release();
4171 __enable_weak_this(__p, __p);
4172}
4173
4174template<class _Tp>
4175template<class _Yp, class _Dp>
4176shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d,
4177 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4178 : __ptr_(__p)
4179{
4180#ifndef _LIBCPP_NO_EXCEPTIONS
4181 try
4182 {
4183#endif // _LIBCPP_NO_EXCEPTIONS
4184 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk;
4185 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Yp>());
4186 __enable_weak_this(__p, __p);
4187#ifndef _LIBCPP_NO_EXCEPTIONS
4188 }
4189 catch (...)
4190 {
4191 __d(__p);
4192 throw;
4193 }
4194#endif // _LIBCPP_NO_EXCEPTIONS
4195}
4196
4197template<class _Tp>
4198template<class _Dp>
4199shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d)
4200 : __ptr_(0)
4201{
4202#ifndef _LIBCPP_NO_EXCEPTIONS
4203 try
4204 {
4205#endif // _LIBCPP_NO_EXCEPTIONS
4206 typedef __shared_ptr_pointer<nullptr_t, _Dp, allocator<_Tp> > _CntrlBlk;
4207 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Tp>());
4208#ifndef _LIBCPP_NO_EXCEPTIONS
4209 }
4210 catch (...)
4211 {
4212 __d(__p);
4213 throw;
4214 }
4215#endif // _LIBCPP_NO_EXCEPTIONS
4216}
4217
4218template<class _Tp>
4219template<class _Yp, class _Dp, class _Alloc>
4220shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a,
4221 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4222 : __ptr_(__p)
4223{
4224#ifndef _LIBCPP_NO_EXCEPTIONS
4225 try
4226 {
4227#endif // _LIBCPP_NO_EXCEPTIONS
4228 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk;
4229 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
4230 typedef __allocator_destructor<_A2> _D2;
4231 _A2 __a2(__a);
4232 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4233 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4234 _CntrlBlk(__p, __d, __a);
4235 __cntrl_ = _VSTD::addressof(*__hold2.release());
4236 __enable_weak_this(__p, __p);
4237#ifndef _LIBCPP_NO_EXCEPTIONS
4238 }
4239 catch (...)
4240 {
4241 __d(__p);
4242 throw;
4243 }
4244#endif // _LIBCPP_NO_EXCEPTIONS
4245}
4246
4247template<class _Tp>
4248template<class _Dp, class _Alloc>
4249shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a)
4250 : __ptr_(0)
4251{
4252#ifndef _LIBCPP_NO_EXCEPTIONS
4253 try
4254 {
4255#endif // _LIBCPP_NO_EXCEPTIONS
4256 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk;
4257 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
4258 typedef __allocator_destructor<_A2> _D2;
4259 _A2 __a2(__a);
4260 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4261 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4262 _CntrlBlk(__p, __d, __a);
4263 __cntrl_ = _VSTD::addressof(*__hold2.release());
4264#ifndef _LIBCPP_NO_EXCEPTIONS
4265 }
4266 catch (...)
4267 {
4268 __d(__p);
4269 throw;
4270 }
4271#endif // _LIBCPP_NO_EXCEPTIONS
4272}
4273
4274template<class _Tp>
4275template<class _Yp>
4276inline
4277shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT
4278 : __ptr_(__p),
4279 __cntrl_(__r.__cntrl_)
4280{
4281 if (__cntrl_)
4282 __cntrl_->__add_shared();
4283}
4284
4285template<class _Tp>
4286inline
4287shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT
4288 : __ptr_(__r.__ptr_),
4289 __cntrl_(__r.__cntrl_)
4290{
4291 if (__cntrl_)
4292 __cntrl_->__add_shared();
4293}
4294
4295template<class _Tp>
4296template<class _Yp>
4297inline
4298shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r,
4299 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type)
4300 _NOEXCEPT
4301 : __ptr_(__r.__ptr_),
4302 __cntrl_(__r.__cntrl_)
4303{
4304 if (__cntrl_)
4305 __cntrl_->__add_shared();
4306}
4307
4308#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4309
4310template<class _Tp>
4311inline
4312shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT
4313 : __ptr_(__r.__ptr_),
4314 __cntrl_(__r.__cntrl_)
4315{
4316 __r.__ptr_ = 0;
4317 __r.__cntrl_ = 0;
4318}
4319
4320template<class _Tp>
4321template<class _Yp>
4322inline
4323shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r,
4324 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type)
4325 _NOEXCEPT
4326 : __ptr_(__r.__ptr_),
4327 __cntrl_(__r.__cntrl_)
4328{
4329 __r.__ptr_ = 0;
4330 __r.__cntrl_ = 0;
4331}
4332
4333#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4334
4335template<class _Tp>
4336template<class _Yp>
4337#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4338shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r,
4339#else
4340shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r,
4341#endif
4342 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
4343 : __ptr_(__r.get())
4344{
4345 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk;
4346 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>());
4347 __enable_weak_this(__r.get(), __r.get());
4348 __r.release();
4349}
4350
4351template<class _Tp>
4352template <class _Yp, class _Dp>
4353#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4354shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r,
4355#else
4356shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r,
4357#endif
4358 typename enable_if
4359 <
4360 !is_lvalue_reference<_Dp>::value &&
4361 !is_array<_Yp>::value &&
4362 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
4363 __nat
4364 >::type)
4365 : __ptr_(__r.get())
4366{
4367#if _LIBCPP_STD_VER > 11
4368 if (__ptr_ == nullptr)
4369 __cntrl_ = nullptr;
4370 else
4371#endif
4372 {
4373 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk;
4374 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), allocator<_Yp>());
4375 __enable_weak_this(__r.get(), __r.get());
4376 }
4377 __r.release();
4378}
4379
4380template<class _Tp>
4381template <class _Yp, class _Dp>
4382#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4383shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r,
4384#else
4385shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r,
4386#endif
4387 typename enable_if
4388 <
4389 is_lvalue_reference<_Dp>::value &&
4390 !is_array<_Yp>::value &&
4391 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
4392 __nat
4393 >::type)
4394 : __ptr_(__r.get())
4395{
4396#if _LIBCPP_STD_VER > 11
4397 if (__ptr_ == nullptr)
4398 __cntrl_ = nullptr;
4399 else
4400#endif
4401 {
4402 typedef __shared_ptr_pointer<_Yp*,
4403 reference_wrapper<typename remove_reference<_Dp>::type>,
4404 allocator<_Yp> > _CntrlBlk;
4405 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), allocator<_Yp>());
4406 __enable_weak_this(__r.get(), __r.get());
4407 }
4408 __r.release();
4409}
4410
4411#ifndef _LIBCPP_HAS_NO_VARIADICS
4412
4413template<class _Tp>
4414template<class ..._Args>
4415shared_ptr<_Tp>
4416shared_ptr<_Tp>::make_shared(_Args&& ...__args)
4417{
4418 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4419 typedef allocator<_CntrlBlk> _A2;
4420 typedef __allocator_destructor<_A2> _D2;
4421 _A2 __a2;
4422 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4423 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...);
4424 shared_ptr<_Tp> __r;
4425 __r.__ptr_ = __hold2.get()->get();
4426 __r.__cntrl_ = __hold2.release();
4427 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4428 return __r;
4429}
4430
4431template<class _Tp>
4432template<class _Alloc, class ..._Args>
4433shared_ptr<_Tp>
4434shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args)
4435{
4436 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4437 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
4438 typedef __allocator_destructor<_A2> _D2;
4439 _A2 __a2(__a);
4440 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
4441 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4442 _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...);
4443 shared_ptr<_Tp> __r;
4444 __r.__ptr_ = __hold2.get()->get();
4445 __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4446 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4447 return __r;
4448}
4449
4450#else // _LIBCPP_HAS_NO_VARIADICS
4451
4452template<class _Tp>
4453shared_ptr<_Tp>
4454shared_ptr<_Tp>::make_shared()
4455{
4456 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4457 typedef allocator<_CntrlBlk> _Alloc2;
4458 typedef __allocator_destructor<_Alloc2> _D2;
4459 _Alloc2 __alloc2;
4460 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4461 ::new(__hold2.get()) _CntrlBlk(__alloc2);
4462 shared_ptr<_Tp> __r;
4463 __r.__ptr_ = __hold2.get()->get();
4464 __r.__cntrl_ = __hold2.release();
4465 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4466 return __r;
4467}
4468
4469template<class _Tp>
4470template<class _A0>
4471shared_ptr<_Tp>
4472shared_ptr<_Tp>::make_shared(_A0& __a0)
4473{
4474 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4475 typedef allocator<_CntrlBlk> _Alloc2;
4476 typedef __allocator_destructor<_Alloc2> _D2;
4477 _Alloc2 __alloc2;
4478 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4479 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0);
4480 shared_ptr<_Tp> __r;
4481 __r.__ptr_ = __hold2.get()->get();
4482 __r.__cntrl_ = __hold2.release();
4483 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4484 return __r;
4485}
4486
4487template<class _Tp>
4488template<class _A0, class _A1>
4489shared_ptr<_Tp>
4490shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1)
4491{
4492 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4493 typedef allocator<_CntrlBlk> _Alloc2;
4494 typedef __allocator_destructor<_Alloc2> _D2;
4495 _Alloc2 __alloc2;
4496 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4497 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1);
4498 shared_ptr<_Tp> __r;
4499 __r.__ptr_ = __hold2.get()->get();
4500 __r.__cntrl_ = __hold2.release();
4501 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4502 return __r;
4503}
4504
4505template<class _Tp>
4506template<class _A0, class _A1, class _A2>
4507shared_ptr<_Tp>
4508shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2)
4509{
4510 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
4511 typedef allocator<_CntrlBlk> _Alloc2;
4512 typedef __allocator_destructor<_Alloc2> _D2;
4513 _Alloc2 __alloc2;
4514 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4515 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2);
4516 shared_ptr<_Tp> __r;
4517 __r.__ptr_ = __hold2.get()->get();
4518 __r.__cntrl_ = __hold2.release();
4519 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4520 return __r;
4521}
4522
4523template<class _Tp>
4524template<class _Alloc>
4525shared_ptr<_Tp>
4526shared_ptr<_Tp>::allocate_shared(const _Alloc& __a)
4527{
4528 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4529 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4530 typedef __allocator_destructor<_Alloc2> _D2;
4531 _Alloc2 __alloc2(__a);
4532 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4533 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4534 _CntrlBlk(__a);
4535 shared_ptr<_Tp> __r;
4536 __r.__ptr_ = __hold2.get()->get();
4537 __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4538 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4539 return __r;
4540}
4541
4542template<class _Tp>
4543template<class _Alloc, class _A0>
4544shared_ptr<_Tp>
4545shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0)
4546{
4547 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4548 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4549 typedef __allocator_destructor<_Alloc2> _D2;
4550 _Alloc2 __alloc2(__a);
4551 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4552 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4553 _CntrlBlk(__a, __a0);
4554 shared_ptr<_Tp> __r;
4555 __r.__ptr_ = __hold2.get()->get();
4556 __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4557 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4558 return __r;
4559}
4560
4561template<class _Tp>
4562template<class _Alloc, class _A0, class _A1>
4563shared_ptr<_Tp>
4564shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1)
4565{
4566 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4567 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4568 typedef __allocator_destructor<_Alloc2> _D2;
4569 _Alloc2 __alloc2(__a);
4570 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4571 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4572 _CntrlBlk(__a, __a0, __a1);
4573 shared_ptr<_Tp> __r;
4574 __r.__ptr_ = __hold2.get()->get();
4575 __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4576 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4577 return __r;
4578}
4579
4580template<class _Tp>
4581template<class _Alloc, class _A0, class _A1, class _A2>
4582shared_ptr<_Tp>
4583shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2)
4584{
4585 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
4586 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
4587 typedef __allocator_destructor<_Alloc2> _D2;
4588 _Alloc2 __alloc2(__a);
4589 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
4590 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
4591 _CntrlBlk(__a, __a0, __a1, __a2);
4592 shared_ptr<_Tp> __r;
4593 __r.__ptr_ = __hold2.get()->get();
4594 __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
4595 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
4596 return __r;
4597}
4598
4599#endif // _LIBCPP_HAS_NO_VARIADICS
4600
4601template<class _Tp>
4602shared_ptr<_Tp>::~shared_ptr()
4603{
4604 if (__cntrl_)
4605 __cntrl_->__release_shared();
4606}
4607
4608template<class _Tp>
4609inline
4610shared_ptr<_Tp>&
4611shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT
4612{
4613 shared_ptr(__r).swap(r&: *this);
4614 return *this;
4615}
4616
4617template<class _Tp>
4618template<class _Yp>
4619inline
4620typename enable_if
4621<
4622 is_convertible<_Yp*, _Tp*>::value,
4623 shared_ptr<_Tp>&
4624>::type
4625shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT
4626{
4627 shared_ptr(__r).swap(r&: *this);
4628 return *this;
4629}
4630
4631#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
4632
4633template<class _Tp>
4634inline
4635shared_ptr<_Tp>&
4636shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT
4637{
4638 shared_ptr(_VSTD::move(__r)).swap(r&: *this);
4639 return *this;
4640}
4641
4642template<class _Tp>
4643template<class _Yp>
4644inline
4645typename enable_if
4646<
4647 is_convertible<_Yp*, _Tp*>::value,
4648 shared_ptr<_Tp>&
4649>::type
4650shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r)
4651{
4652 shared_ptr(_VSTD::move(__r)).swap(r&: *this);
4653 return *this;
4654}
4655
4656template<class _Tp>
4657template<class _Yp>
4658inline
4659typename enable_if
4660<
4661 !is_array<_Yp>::value &&
4662 is_convertible<_Yp*, _Tp*>::value,
4663 shared_ptr<_Tp>
4664>::type&
4665shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r)
4666{
4667 shared_ptr(_VSTD::move(__r)).swap(r&: *this);
4668 return *this;
4669}
4670
4671template<class _Tp>
4672template <class _Yp, class _Dp>
4673inline
4674typename enable_if
4675<
4676 !is_array<_Yp>::value &&
4677 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value,
4678 shared_ptr<_Tp>&
4679>::type
4680shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r)
4681{
4682 shared_ptr(_VSTD::move(__r)).swap(r&: *this);
4683 return *this;
4684}
4685
4686#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4687
4688template<class _Tp>
4689template<class _Yp>
4690inline _LIBCPP_INLINE_VISIBILITY
4691typename enable_if
4692<
4693 !is_array<_Yp>::value &&
4694 is_convertible<_Yp*, _Tp*>::value,
4695 shared_ptr<_Tp>&
4696>::type
4697shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r)
4698{
4699 shared_ptr(__r).swap(*this);
4700 return *this;
4701}
4702
4703template<class _Tp>
4704template <class _Yp, class _Dp>
4705inline _LIBCPP_INLINE_VISIBILITY
4706typename enable_if
4707<
4708 !is_array<_Yp>::value &&
4709 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value,
4710 shared_ptr<_Tp>&
4711>::type
4712shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r)
4713{
4714 shared_ptr(_VSTD::move(__r)).swap(*this);
4715 return *this;
4716}
4717
4718#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
4719
4720template<class _Tp>
4721inline
4722void
4723shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT
4724{
4725 _VSTD::swap(__ptr_, __r.__ptr_);
4726 _VSTD::swap(x&: __cntrl_, y&: __r.__cntrl_);
4727}
4728
4729template<class _Tp>
4730inline
4731void
4732shared_ptr<_Tp>::reset() _NOEXCEPT
4733{
4734 shared_ptr().swap(r&: *this);
4735}
4736
4737template<class _Tp>
4738template<class _Yp>
4739inline
4740typename enable_if
4741<
4742 is_convertible<_Yp*, _Tp*>::value,
4743 void
4744>::type
4745shared_ptr<_Tp>::reset(_Yp* __p)
4746{
4747 shared_ptr(__p).swap(r&: *this);
4748}
4749
4750template<class _Tp>
4751template<class _Yp, class _Dp>
4752inline
4753typename enable_if
4754<
4755 is_convertible<_Yp*, _Tp*>::value,
4756 void
4757>::type
4758shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d)
4759{
4760 shared_ptr(__p, __d).swap(r&: *this);
4761}
4762
4763template<class _Tp>
4764template<class _Yp, class _Dp, class _Alloc>
4765inline
4766typename enable_if
4767<
4768 is_convertible<_Yp*, _Tp*>::value,
4769 void
4770>::type
4771shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a)
4772{
4773 shared_ptr(__p, __d, __a).swap(r&: *this);
4774}
4775
4776#ifndef _LIBCPP_HAS_NO_VARIADICS
4777
4778template<class _Tp, class ..._Args>
4779inline _LIBCPP_INLINE_VISIBILITY
4780typename enable_if
4781<
4782 !is_array<_Tp>::value,
4783 shared_ptr<_Tp>
4784>::type
4785make_shared(_Args&& ...__args)
4786{
4787 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...);
4788}
4789
4790template<class _Tp, class _Alloc, class ..._Args>
4791inline _LIBCPP_INLINE_VISIBILITY
4792typename enable_if
4793<
4794 !is_array<_Tp>::value,
4795 shared_ptr<_Tp>
4796>::type
4797allocate_shared(const _Alloc& __a, _Args&& ...__args)
4798{
4799 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...);
4800}
4801
4802#else // _LIBCPP_HAS_NO_VARIADICS
4803
4804template<class _Tp>
4805inline _LIBCPP_INLINE_VISIBILITY
4806shared_ptr<_Tp>
4807make_shared()
4808{
4809 return shared_ptr<_Tp>::make_shared();
4810}
4811
4812template<class _Tp, class _A0>
4813inline _LIBCPP_INLINE_VISIBILITY
4814shared_ptr<_Tp>
4815make_shared(_A0& __a0)
4816{
4817 return shared_ptr<_Tp>::make_shared(__a0);
4818}
4819
4820template<class _Tp, class _A0, class _A1>
4821inline _LIBCPP_INLINE_VISIBILITY
4822shared_ptr<_Tp>
4823make_shared(_A0& __a0, _A1& __a1)
4824{
4825 return shared_ptr<_Tp>::make_shared(__a0, __a1);
4826}
4827
4828template<class _Tp, class _A0, class _A1, class _A2>
4829inline _LIBCPP_INLINE_VISIBILITY
4830shared_ptr<_Tp>
4831make_shared(_A0& __a0, _A1& __a1, _A2& __a2)
4832{
4833 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2);
4834}
4835
4836template<class _Tp, class _Alloc>
4837inline _LIBCPP_INLINE_VISIBILITY
4838shared_ptr<_Tp>
4839allocate_shared(const _Alloc& __a)
4840{
4841 return shared_ptr<_Tp>::allocate_shared(__a);
4842}
4843
4844template<class _Tp, class _Alloc, class _A0>
4845inline _LIBCPP_INLINE_VISIBILITY
4846shared_ptr<_Tp>
4847allocate_shared(const _Alloc& __a, _A0& __a0)
4848{
4849 return shared_ptr<_Tp>::allocate_shared(__a, __a0);
4850}
4851
4852template<class _Tp, class _Alloc, class _A0, class _A1>
4853inline _LIBCPP_INLINE_VISIBILITY
4854shared_ptr<_Tp>
4855allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1)
4856{
4857 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1);
4858}
4859
4860template<class _Tp, class _Alloc, class _A0, class _A1, class _A2>
4861inline _LIBCPP_INLINE_VISIBILITY
4862shared_ptr<_Tp>
4863allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2)
4864{
4865 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2);
4866}
4867
4868#endif // _LIBCPP_HAS_NO_VARIADICS
4869
4870template<class _Tp, class _Up>
4871inline _LIBCPP_INLINE_VISIBILITY
4872bool
4873operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4874{
4875 return __x.get() == __y.get();
4876}
4877
4878template<class _Tp, class _Up>
4879inline _LIBCPP_INLINE_VISIBILITY
4880bool
4881operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4882{
4883 return !(__x == __y);
4884}
4885
4886template<class _Tp, class _Up>
4887inline _LIBCPP_INLINE_VISIBILITY
4888bool
4889operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4890{
4891 typedef typename common_type<_Tp*, _Up*>::type _Vp;
4892 return less<_Vp>()(__x.get(), __y.get());
4893}
4894
4895template<class _Tp, class _Up>
4896inline _LIBCPP_INLINE_VISIBILITY
4897bool
4898operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4899{
4900 return __y < __x;
4901}
4902
4903template<class _Tp, class _Up>
4904inline _LIBCPP_INLINE_VISIBILITY
4905bool
4906operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4907{
4908 return !(__y < __x);
4909}
4910
4911template<class _Tp, class _Up>
4912inline _LIBCPP_INLINE_VISIBILITY
4913bool
4914operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
4915{
4916 return !(__x < __y);
4917}
4918
4919template<class _Tp>
4920inline _LIBCPP_INLINE_VISIBILITY
4921bool
4922operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4923{
4924 return !__x;
4925}
4926
4927template<class _Tp>
4928inline _LIBCPP_INLINE_VISIBILITY
4929bool
4930operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4931{
4932 return !__x;
4933}
4934
4935template<class _Tp>
4936inline _LIBCPP_INLINE_VISIBILITY
4937bool
4938operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4939{
4940 return static_cast<bool>(__x);
4941}
4942
4943template<class _Tp>
4944inline _LIBCPP_INLINE_VISIBILITY
4945bool
4946operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4947{
4948 return static_cast<bool>(__x);
4949}
4950
4951template<class _Tp>
4952inline _LIBCPP_INLINE_VISIBILITY
4953bool
4954operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4955{
4956 return less<_Tp*>()(__x.get(), nullptr);
4957}
4958
4959template<class _Tp>
4960inline _LIBCPP_INLINE_VISIBILITY
4961bool
4962operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4963{
4964 return less<_Tp*>()(nullptr, __x.get());
4965}
4966
4967template<class _Tp>
4968inline _LIBCPP_INLINE_VISIBILITY
4969bool
4970operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4971{
4972 return nullptr < __x;
4973}
4974
4975template<class _Tp>
4976inline _LIBCPP_INLINE_VISIBILITY
4977bool
4978operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4979{
4980 return __x < nullptr;
4981}
4982
4983template<class _Tp>
4984inline _LIBCPP_INLINE_VISIBILITY
4985bool
4986operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
4987{
4988 return !(nullptr < __x);
4989}
4990
4991template<class _Tp>
4992inline _LIBCPP_INLINE_VISIBILITY
4993bool
4994operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
4995{
4996 return !(__x < nullptr);
4997}
4998
4999template<class _Tp>
5000inline _LIBCPP_INLINE_VISIBILITY
5001bool
5002operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
5003{
5004 return !(__x < nullptr);
5005}
5006
5007template<class _Tp>
5008inline _LIBCPP_INLINE_VISIBILITY
5009bool
5010operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
5011{
5012 return !(nullptr < __x);
5013}
5014
5015template<class _Tp>
5016inline _LIBCPP_INLINE_VISIBILITY
5017void
5018swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT
5019{
5020 __x.swap(__y);
5021}
5022
5023template<class _Tp, class _Up>
5024inline _LIBCPP_INLINE_VISIBILITY
5025typename enable_if
5026<
5027 !is_array<_Tp>::value && !is_array<_Up>::value,
5028 shared_ptr<_Tp>
5029>::type
5030static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
5031{
5032 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get()));
5033}
5034
5035template<class _Tp, class _Up>
5036inline _LIBCPP_INLINE_VISIBILITY
5037typename enable_if
5038<
5039 !is_array<_Tp>::value && !is_array<_Up>::value,
5040 shared_ptr<_Tp>
5041>::type
5042dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
5043{
5044 _Tp* __p = dynamic_cast<_Tp*>(__r.get());
5045 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>();
5046}
5047
5048template<class _Tp, class _Up>
5049typename enable_if
5050<
5051 is_array<_Tp>::value == is_array<_Up>::value,
5052 shared_ptr<_Tp>
5053>::type
5054const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
5055{
5056 typedef typename remove_extent<_Tp>::type _RTp;
5057 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get()));
5058}
5059
5060#ifndef _LIBCPP_NO_RTTI
5061
5062template<class _Dp, class _Tp>
5063inline _LIBCPP_INLINE_VISIBILITY
5064_Dp*
5065get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT
5066{
5067 return __p.template __get_deleter<_Dp>();
5068}
5069
5070#endif // _LIBCPP_NO_RTTI
5071
5072template<class _Tp>
5073class _LIBCPP_TYPE_VIS_ONLY weak_ptr
5074{
5075public:
5076 typedef _Tp element_type;
5077private:
5078 element_type* __ptr_;
5079 __shared_weak_count* __cntrl_;
5080
5081public:
5082 _LIBCPP_INLINE_VISIBILITY
5083 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT;
5084 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r,
5085 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
5086 _NOEXCEPT;
5087 _LIBCPP_INLINE_VISIBILITY
5088 weak_ptr(weak_ptr const& __r) _NOEXCEPT;
5089 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r,
5090 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
5091 _NOEXCEPT;
5092
5093#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
5094 _LIBCPP_INLINE_VISIBILITY
5095 weak_ptr(weak_ptr&& __r) _NOEXCEPT;
5096 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r,
5097 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
5098 _NOEXCEPT;
5099#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
5100 ~weak_ptr();
5101
5102 _LIBCPP_INLINE_VISIBILITY
5103 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT;
5104 template<class _Yp>
5105 typename enable_if
5106 <
5107 is_convertible<_Yp*, element_type*>::value,
5108 weak_ptr&
5109 >::type
5110 _LIBCPP_INLINE_VISIBILITY
5111 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT;
5112
5113#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
5114
5115 _LIBCPP_INLINE_VISIBILITY
5116 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT;
5117 template<class _Yp>
5118 typename enable_if
5119 <
5120 is_convertible<_Yp*, element_type*>::value,
5121 weak_ptr&
5122 >::type
5123 _LIBCPP_INLINE_VISIBILITY
5124 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT;
5125
5126#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
5127
5128 template<class _Yp>
5129 typename enable_if
5130 <
5131 is_convertible<_Yp*, element_type*>::value,
5132 weak_ptr&
5133 >::type
5134 _LIBCPP_INLINE_VISIBILITY
5135 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT;
5136
5137 _LIBCPP_INLINE_VISIBILITY
5138 void swap(weak_ptr& __r) _NOEXCEPT;
5139 _LIBCPP_INLINE_VISIBILITY
5140 void reset() _NOEXCEPT;
5141
5142 _LIBCPP_INLINE_VISIBILITY
5143 long use_count() const _NOEXCEPT
5144 {return __cntrl_ ? __cntrl_->use_count() : 0;}
5145 _LIBCPP_INLINE_VISIBILITY
5146 bool expired() const _NOEXCEPT
5147 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;}
5148 shared_ptr<_Tp> lock() const _NOEXCEPT;
5149 template<class _Up>
5150 _LIBCPP_INLINE_VISIBILITY
5151 bool owner_before(const shared_ptr<_Up>& __r) const
5152 {return __cntrl_ < __r.__cntrl_;}
5153 template<class _Up>
5154 _LIBCPP_INLINE_VISIBILITY
5155 bool owner_before(const weak_ptr<_Up>& __r) const
5156 {return __cntrl_ < __r.__cntrl_;}
5157
5158 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr;
5159 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr;
5160};
5161
5162template<class _Tp>
5163inline
5164_LIBCPP_CONSTEXPR
5165weak_ptr<_Tp>::weak_ptr() _NOEXCEPT
5166 : __ptr_(0),
5167 __cntrl_(0)
5168{
5169}
5170
5171template<class _Tp>
5172inline
5173weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT
5174 : __ptr_(__r.__ptr_),
5175 __cntrl_(__r.__cntrl_)
5176{
5177 if (__cntrl_)
5178 __cntrl_->__add_weak();
5179}
5180
5181template<class _Tp>
5182template<class _Yp>
5183inline
5184weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r,
5185 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
5186 _NOEXCEPT
5187 : __ptr_(__r.__ptr_),
5188 __cntrl_(__r.__cntrl_)
5189{
5190 if (__cntrl_)
5191 __cntrl_->__add_weak();
5192}
5193
5194template<class _Tp>
5195template<class _Yp>
5196inline
5197weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r,
5198 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
5199 _NOEXCEPT
5200 : __ptr_(__r.__ptr_),
5201 __cntrl_(__r.__cntrl_)
5202{
5203 if (__cntrl_)
5204 __cntrl_->__add_weak();
5205}
5206
5207#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
5208
5209template<class _Tp>
5210inline
5211weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT
5212 : __ptr_(__r.__ptr_),
5213 __cntrl_(__r.__cntrl_)
5214{
5215 __r.__ptr_ = 0;
5216 __r.__cntrl_ = 0;
5217}
5218
5219template<class _Tp>
5220template<class _Yp>
5221inline
5222weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r,
5223 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
5224 _NOEXCEPT
5225 : __ptr_(__r.__ptr_),
5226 __cntrl_(__r.__cntrl_)
5227{
5228 __r.__ptr_ = 0;
5229 __r.__cntrl_ = 0;
5230}
5231
5232#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
5233
5234template<class _Tp>
5235weak_ptr<_Tp>::~weak_ptr()
5236{
5237 if (__cntrl_)
5238 __cntrl_->__release_weak();
5239}
5240
5241template<class _Tp>
5242inline
5243weak_ptr<_Tp>&
5244weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT
5245{
5246 weak_ptr(__r).swap(r&: *this);
5247 return *this;
5248}
5249
5250template<class _Tp>
5251template<class _Yp>
5252inline
5253typename enable_if
5254<
5255 is_convertible<_Yp*, _Tp*>::value,
5256 weak_ptr<_Tp>&
5257>::type
5258weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT
5259{
5260 weak_ptr(__r).swap(r&: *this);
5261 return *this;
5262}
5263
5264#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
5265
5266template<class _Tp>
5267inline
5268weak_ptr<_Tp>&
5269weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT
5270{
5271 weak_ptr(_VSTD::move(__r)).swap(r&: *this);
5272 return *this;
5273}
5274
5275template<class _Tp>
5276template<class _Yp>
5277inline
5278typename enable_if
5279<
5280 is_convertible<_Yp*, _Tp*>::value,
5281 weak_ptr<_Tp>&
5282>::type
5283weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT
5284{
5285 weak_ptr(_VSTD::move(__r)).swap(r&: *this);
5286 return *this;
5287}
5288
5289#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
5290
5291template<class _Tp>
5292template<class _Yp>
5293inline
5294typename enable_if
5295<
5296 is_convertible<_Yp*, _Tp*>::value,
5297 weak_ptr<_Tp>&
5298>::type
5299weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT
5300{
5301 weak_ptr(__r).swap(r&: *this);
5302 return *this;
5303}
5304
5305template<class _Tp>
5306inline
5307void
5308weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT
5309{
5310 _VSTD::swap(__ptr_, __r.__ptr_);
5311 _VSTD::swap(x&: __cntrl_, y&: __r.__cntrl_);
5312}
5313
5314template<class _Tp>
5315inline _LIBCPP_INLINE_VISIBILITY
5316void
5317swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT
5318{
5319 __x.swap(__y);
5320}
5321
5322template<class _Tp>
5323inline
5324void
5325weak_ptr<_Tp>::reset() _NOEXCEPT
5326{
5327 weak_ptr().swap(r&: *this);
5328}
5329
5330template<class _Tp>
5331template<class _Yp>
5332shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r,
5333 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type)
5334 : __ptr_(__r.__ptr_),
5335 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_)
5336{
5337 if (__cntrl_ == 0)
5338#ifndef _LIBCPP_NO_EXCEPTIONS
5339 throw bad_weak_ptr();
5340#else
5341 assert(!"bad_weak_ptr");
5342#endif
5343}
5344
5345template<class _Tp>
5346shared_ptr<_Tp>
5347weak_ptr<_Tp>::lock() const _NOEXCEPT
5348{
5349 shared_ptr<_Tp> __r;
5350 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_;
5351 if (__r.__cntrl_)
5352 __r.__ptr_ = __ptr_;
5353 return __r;
5354}
5355
5356#if _LIBCPP_STD_VER > 14
5357template <class _Tp = void> struct owner_less;
5358#else
5359template <class _Tp> struct owner_less;
5360#endif
5361
5362template <class _Tp>
5363struct _LIBCPP_TYPE_VIS_ONLY owner_less<shared_ptr<_Tp> >
5364 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool>
5365{
5366 typedef bool result_type;
5367 _LIBCPP_INLINE_VISIBILITY
5368 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const
5369 {return __x.owner_before(__y);}
5370 _LIBCPP_INLINE_VISIBILITY
5371 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const
5372 {return __x.owner_before(__y);}
5373 _LIBCPP_INLINE_VISIBILITY
5374 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const
5375 {return __x.owner_before(__y);}
5376};
5377
5378template <class _Tp>
5379struct _LIBCPP_TYPE_VIS_ONLY owner_less<weak_ptr<_Tp> >
5380 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool>
5381{
5382 typedef bool result_type;
5383 _LIBCPP_INLINE_VISIBILITY
5384 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const
5385 {return __x.owner_before(__y);}
5386 _LIBCPP_INLINE_VISIBILITY
5387 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const
5388 {return __x.owner_before(__y);}
5389 _LIBCPP_INLINE_VISIBILITY
5390 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const
5391 {return __x.owner_before(__y);}
5392};
5393
5394#if _LIBCPP_STD_VER > 14
5395template <>
5396struct _LIBCPP_TYPE_VIS_ONLY owner_less<void>
5397{
5398 template <class _Tp, class _Up>
5399 _LIBCPP_INLINE_VISIBILITY
5400 bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const
5401 {return __x.owner_before(__y);}
5402 template <class _Tp, class _Up>
5403 _LIBCPP_INLINE_VISIBILITY
5404 bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const
5405 {return __x.owner_before(__y);}
5406 template <class _Tp, class _Up>
5407 _LIBCPP_INLINE_VISIBILITY
5408 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const
5409 {return __x.owner_before(__y);}
5410 template <class _Tp, class _Up>
5411 _LIBCPP_INLINE_VISIBILITY
5412 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const
5413 {return __x.owner_before(__y);}
5414 typedef void is_transparent;
5415};
5416#endif
5417
5418template<class _Tp>
5419class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this
5420{
5421 mutable weak_ptr<_Tp> __weak_this_;
5422protected:
5423 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
5424 enable_shared_from_this() _NOEXCEPT {}
5425 _LIBCPP_INLINE_VISIBILITY
5426 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {}
5427 _LIBCPP_INLINE_VISIBILITY
5428 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT
5429 {return *this;}
5430 _LIBCPP_INLINE_VISIBILITY
5431 ~enable_shared_from_this() {}
5432public:
5433 _LIBCPP_INLINE_VISIBILITY
5434 shared_ptr<_Tp> shared_from_this()
5435 {return shared_ptr<_Tp>(__weak_this_);}
5436 _LIBCPP_INLINE_VISIBILITY
5437 shared_ptr<_Tp const> shared_from_this() const
5438 {return shared_ptr<const _Tp>(__weak_this_);}
5439
5440#if _LIBCPP_STD_VER > 14
5441 _LIBCPP_INLINE_VISIBILITY
5442 weak_ptr<_Tp> weak_from_this() _NOEXCEPT
5443 { return __weak_this_; }
5444
5445 _LIBCPP_INLINE_VISIBILITY
5446 weak_ptr<const _Tp> weak_from_this() const _NOEXCEPT
5447 { return __weak_this_; }
5448#endif // _LIBCPP_STD_VER > 14
5449
5450 template <class _Up> friend class shared_ptr;
5451};
5452
5453template <class _Tp>
5454struct _LIBCPP_TYPE_VIS_ONLY hash<shared_ptr<_Tp> >
5455{
5456 typedef shared_ptr<_Tp> argument_type;
5457 typedef size_t result_type;
5458 _LIBCPP_INLINE_VISIBILITY
5459 result_type operator()(const argument_type& __ptr) const _NOEXCEPT
5460 {
5461 return hash<_Tp*>()(__ptr.get());
5462 }
5463};
5464
5465template<class _CharT, class _Traits, class _Yp>
5466inline _LIBCPP_INLINE_VISIBILITY
5467basic_ostream<_CharT, _Traits>&
5468operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p);
5469
5470
5471#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
5472
5473class _LIBCPP_TYPE_VIS __sp_mut
5474{
5475 void* __lx;
5476public:
5477 void lock() _NOEXCEPT;
5478 void unlock() _NOEXCEPT;
5479
5480private:
5481 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT;
5482 __sp_mut(const __sp_mut&);
5483 __sp_mut& operator=(const __sp_mut&);
5484
5485 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*);
5486};
5487
5488_LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*);
5489
5490template <class _Tp>
5491inline _LIBCPP_INLINE_VISIBILITY
5492bool
5493atomic_is_lock_free(const shared_ptr<_Tp>*)
5494{
5495 return false;
5496}
5497
5498template <class _Tp>
5499shared_ptr<_Tp>
5500atomic_load(const shared_ptr<_Tp>* __p)
5501{
5502 __sp_mut& __m = __get_sp_mut(__p);
5503 __m.lock();
5504 shared_ptr<_Tp> __q = *__p;
5505 __m.unlock();
5506 return __q;
5507}
5508
5509template <class _Tp>
5510inline _LIBCPP_INLINE_VISIBILITY
5511shared_ptr<_Tp>
5512atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order)
5513{
5514 return atomic_load(__p);
5515}
5516
5517template <class _Tp>
5518void
5519atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r)
5520{
5521 __sp_mut& __m = __get_sp_mut(__p);
5522 __m.lock();
5523 __p->swap(__r);
5524 __m.unlock();
5525}
5526
5527template <class _Tp>
5528inline _LIBCPP_INLINE_VISIBILITY
5529void
5530atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order)
5531{
5532 atomic_store(__p, __r);
5533}
5534
5535template <class _Tp>
5536shared_ptr<_Tp>
5537atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r)
5538{
5539 __sp_mut& __m = __get_sp_mut(__p);
5540 __m.lock();
5541 __p->swap(__r);
5542 __m.unlock();
5543 return __r;
5544}
5545
5546template <class _Tp>
5547inline _LIBCPP_INLINE_VISIBILITY
5548shared_ptr<_Tp>
5549atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order)
5550{
5551 return atomic_exchange(__p, __r);
5552}
5553
5554template <class _Tp>
5555bool
5556atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w)
5557{
5558 shared_ptr<_Tp> __temp;
5559 __sp_mut& __m = __get_sp_mut(__p);
5560 __m.lock();
5561 if (__p->__owner_equivalent(*__v))
5562 {
5563 _VSTD::swap(__temp, *__p);
5564 *__p = __w;
5565 __m.unlock();
5566 return true;
5567 }
5568 _VSTD::swap(__temp, *__v);
5569 *__v = *__p;
5570 __m.unlock();
5571 return false;
5572}
5573
5574template <class _Tp>
5575inline _LIBCPP_INLINE_VISIBILITY
5576bool
5577atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w)
5578{
5579 return atomic_compare_exchange_strong(__p, __v, __w);
5580}
5581
5582template <class _Tp>
5583inline _LIBCPP_INLINE_VISIBILITY
5584bool
5585atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v,
5586 shared_ptr<_Tp> __w, memory_order, memory_order)
5587{
5588 return atomic_compare_exchange_strong(__p, __v, __w);
5589}
5590
5591template <class _Tp>
5592inline _LIBCPP_INLINE_VISIBILITY
5593bool
5594atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v,
5595 shared_ptr<_Tp> __w, memory_order, memory_order)
5596{
5597 return atomic_compare_exchange_weak(__p, __v, __w);
5598}
5599
5600#endif // !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
5601
5602//enum class
5603struct _LIBCPP_TYPE_VIS pointer_safety
5604{
5605 enum __lx
5606 {
5607 relaxed,
5608 preferred,
5609 strict
5610 };
5611
5612 __lx __v_;
5613
5614 _LIBCPP_INLINE_VISIBILITY
5615 pointer_safety(__lx __v) : __v_(__v) {}
5616 _LIBCPP_INLINE_VISIBILITY
5617 operator int() const {return __v_;}
5618};
5619
5620_LIBCPP_FUNC_VIS void declare_reachable(void* __p);
5621_LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n);
5622_LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n);
5623_LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT;
5624_LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p);
5625
5626template <class _Tp>
5627inline _LIBCPP_INLINE_VISIBILITY
5628_Tp*
5629undeclare_reachable(_Tp* __p)
5630{
5631 return static_cast<_Tp*>(__undeclare_reachable(__p));
5632}
5633
5634_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space);
5635
5636// --- Helper for container swap --
5637template <typename _Alloc>
5638inline _LIBCPP_INLINE_VISIBILITY
5639void __swap_allocator(_Alloc & __a1, _Alloc & __a2)
5640#if _LIBCPP_STD_VER >= 14
5641 _NOEXCEPT
5642#else
5643 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value)
5644#endif
5645{
5646 __swap_allocator(__a1, __a2,
5647 integral_constant<bool, _VSTD::allocator_traits<_Alloc>::propagate_on_container_swap::value>());
5648}
5649
5650template <typename _Alloc>
5651_LIBCPP_INLINE_VISIBILITY
5652void __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type)
5653#if _LIBCPP_STD_VER >= 14
5654 _NOEXCEPT
5655#else
5656 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value)
5657#endif
5658{
5659 using _VSTD::swap;
5660 swap(__a1, __a2);
5661}
5662
5663template <typename _Alloc>
5664inline _LIBCPP_INLINE_VISIBILITY
5665void __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {}
5666
5667template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> >
5668struct __noexcept_move_assign_container : public integral_constant<bool,
5669 _Traits::propagate_on_container_move_assignment::value
5670#if _LIBCPP_STD_VER > 14
5671 || _Traits::is_always_equal::value
5672#else
5673 && is_nothrow_move_assignable<_Alloc>::value
5674#endif
5675 > {};
5676
5677
5678#ifndef _LIBCPP_HAS_NO_VARIADICS
5679template <class _Tp, class _Alloc>
5680struct __temp_value {
5681 typedef allocator_traits<_Alloc> _Traits;
5682
5683 typename aligned_storage<sizeof(_Tp), alignof(_Tp)>::type __v;
5684 _Alloc &__a;
5685
5686 _Tp *__addr() { return reinterpret_cast<_Tp *>(addressof(__v)); }
5687 _Tp & get() { return *__addr(); }
5688
5689 template<class... _Args>
5690 __temp_value(_Alloc &__alloc, _Args&& ... __args) : __a(__alloc)
5691 { _Traits::construct(__a, __addr(), _VSTD::forward<_Args>(__args)...); }
5692
5693 ~__temp_value() { _Traits::destroy(__a, __addr()); }
5694 };
5695#endif
5696
5697_LIBCPP_END_NAMESPACE_STD
5698
5699#endif // _LIBCPP_MEMORY
5700