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; 167template <class T> T* addressof(const T&& r) noexcept = delete; 168 169template <class InputIterator, class ForwardIterator> 170ForwardIterator 171uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result); 172 173template <class InputIterator, class Size, class ForwardIterator> 174ForwardIterator 175uninitialized_copy_n(InputIterator first, Size n, ForwardIterator result); 176 177template <class ForwardIterator, class T> 178void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x); 179 180template <class ForwardIterator, class Size, class T> 181ForwardIterator 182uninitialized_fill_n(ForwardIterator first, Size n, const T& x); 183 184template <class T> 185void destroy_at(T* location); 186 187template <class ForwardIterator> 188 void destroy(ForwardIterator first, ForwardIterator last); 189 190template <class ForwardIterator, class Size> 191 ForwardIterator destroy_n(ForwardIterator first, Size n); 192 193template <class InputIterator, class ForwardIterator> 194 ForwardIterator uninitialized_move(InputIterator first, InputIterator last, ForwardIterator result); 195 196template <class InputIterator, class Size, class ForwardIterator> 197 pair<InputIterator,ForwardIterator> uninitialized_move_n(InputIterator first, Size n, ForwardIterator result); 198 199template <class ForwardIterator> 200 void uninitialized_value_construct(ForwardIterator first, ForwardIterator last); 201 202template <class ForwardIterator, class Size> 203 ForwardIterator uninitialized_value_construct_n(ForwardIterator first, Size n); 204 205template <class ForwardIterator> 206 void uninitialized_default_construct(ForwardIterator first, ForwardIterator last); 207 208template <class ForwardIterator, class Size> 209 ForwardIterator uninitialized_default_construct_n(ForwardIterator first, Size n); 210 211template <class Y> struct auto_ptr_ref {}; 212 213template<class X> 214class auto_ptr 215{ 216public: 217 typedef X element_type; 218 219 explicit auto_ptr(X* p =0) throw(); 220 auto_ptr(auto_ptr&) throw(); 221 template<class Y> auto_ptr(auto_ptr<Y>&) throw(); 222 auto_ptr& operator=(auto_ptr&) throw(); 223 template<class Y> auto_ptr& operator=(auto_ptr<Y>&) throw(); 224 auto_ptr& operator=(auto_ptr_ref<X> r) throw(); 225 ~auto_ptr() throw(); 226 227 typename add_lvalue_reference<X>::type operator*() const throw(); 228 X* operator->() const throw(); 229 X* get() const throw(); 230 X* release() throw(); 231 void reset(X* p =0) throw(); 232 233 auto_ptr(auto_ptr_ref<X>) throw(); 234 template<class Y> operator auto_ptr_ref<Y>() throw(); 235 template<class Y> operator auto_ptr<Y>() throw(); 236}; 237 238template <class T> 239struct default_delete 240{ 241 constexpr default_delete() noexcept = default; 242 template <class U> default_delete(const default_delete<U>&) noexcept; 243 244 void operator()(T*) const noexcept; 245}; 246 247template <class T> 248struct default_delete<T[]> 249{ 250 constexpr default_delete() noexcept = default; 251 void operator()(T*) const noexcept; 252 template <class U> void operator()(U*) const = delete; 253}; 254 255template <class T, class D = default_delete<T>> 256class unique_ptr 257{ 258public: 259 typedef see below pointer; 260 typedef T element_type; 261 typedef D deleter_type; 262 263 // constructors 264 constexpr unique_ptr() noexcept; 265 explicit unique_ptr(pointer p) noexcept; 266 unique_ptr(pointer p, see below d1) noexcept; 267 unique_ptr(pointer p, see below d2) noexcept; 268 unique_ptr(unique_ptr&& u) noexcept; 269 unique_ptr(nullptr_t) noexcept : unique_ptr() { } 270 template <class U, class E> 271 unique_ptr(unique_ptr<U, E>&& u) noexcept; 272 template <class U> 273 unique_ptr(auto_ptr<U>&& u) noexcept; 274 275 // destructor 276 ~unique_ptr(); 277 278 // assignment 279 unique_ptr& operator=(unique_ptr&& u) noexcept; 280 template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept; 281 unique_ptr& operator=(nullptr_t) noexcept; 282 283 // observers 284 typename add_lvalue_reference<T>::type operator*() const; 285 pointer operator->() const noexcept; 286 pointer get() const noexcept; 287 deleter_type& get_deleter() noexcept; 288 const deleter_type& get_deleter() const noexcept; 289 explicit operator bool() const noexcept; 290 291 // modifiers 292 pointer release() noexcept; 293 void reset(pointer p = pointer()) noexcept; 294 void swap(unique_ptr& u) noexcept; 295}; 296 297template <class T, class D> 298class unique_ptr<T[], D> 299{ 300public: 301 typedef implementation-defined pointer; 302 typedef T element_type; 303 typedef D deleter_type; 304 305 // constructors 306 constexpr unique_ptr() noexcept; 307 explicit unique_ptr(pointer p) noexcept; 308 unique_ptr(pointer p, see below d) noexcept; 309 unique_ptr(pointer p, see below d) noexcept; 310 unique_ptr(unique_ptr&& u) noexcept; 311 unique_ptr(nullptr_t) noexcept : unique_ptr() { } 312 313 // destructor 314 ~unique_ptr(); 315 316 // assignment 317 unique_ptr& operator=(unique_ptr&& u) noexcept; 318 unique_ptr& operator=(nullptr_t) noexcept; 319 320 // observers 321 T& operator[](size_t i) const; 322 pointer get() const noexcept; 323 deleter_type& get_deleter() noexcept; 324 const deleter_type& get_deleter() const noexcept; 325 explicit operator bool() const noexcept; 326 327 // modifiers 328 pointer release() noexcept; 329 void reset(pointer p = pointer()) noexcept; 330 void reset(nullptr_t) noexcept; 331 template <class U> void reset(U) = delete; 332 void swap(unique_ptr& u) noexcept; 333}; 334 335template <class T, class D> 336 void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept; 337 338template <class T1, class D1, class T2, class D2> 339 bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 340template <class T1, class D1, class T2, class D2> 341 bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 342template <class T1, class D1, class T2, class D2> 343 bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 344template <class T1, class D1, class T2, class D2> 345 bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 346template <class T1, class D1, class T2, class D2> 347 bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 348template <class T1, class D1, class T2, class D2> 349 bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 350 351template <class T, class D> 352 bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; 353template <class T, class D> 354 bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept; 355template <class T, class D> 356 bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept; 357template <class T, class D> 358 bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept; 359 360template <class T, class D> 361 bool operator<(const unique_ptr<T, D>& x, nullptr_t); 362template <class T, class D> 363 bool operator<(nullptr_t, const unique_ptr<T, D>& y); 364template <class T, class D> 365 bool operator<=(const unique_ptr<T, D>& x, nullptr_t); 366template <class T, class D> 367 bool operator<=(nullptr_t, const unique_ptr<T, D>& y); 368template <class T, class D> 369 bool operator>(const unique_ptr<T, D>& x, nullptr_t); 370template <class T, class D> 371 bool operator>(nullptr_t, const unique_ptr<T, D>& y); 372template <class T, class D> 373 bool operator>=(const unique_ptr<T, D>& x, nullptr_t); 374template <class T, class D> 375 bool operator>=(nullptr_t, const unique_ptr<T, D>& y); 376 377class bad_weak_ptr 378 : public std::exception 379{ 380 bad_weak_ptr() noexcept; 381}; 382 383template<class T, class... Args> unique_ptr<T> make_unique(Args&&... args); // C++14 384template<class T> unique_ptr<T> make_unique(size_t n); // C++14 385template<class T, class... Args> unspecified make_unique(Args&&...) = delete; // C++14, T == U[N] 386 387template<class T> 388class shared_ptr 389{ 390public: 391 typedef T element_type; 392 typedef weak_ptr<T> weak_type; // C++17 393 394 // constructors: 395 constexpr shared_ptr() noexcept; 396 template<class Y> explicit shared_ptr(Y* p); 397 template<class Y, class D> shared_ptr(Y* p, D d); 398 template<class Y, class D, class A> shared_ptr(Y* p, D d, A a); 399 template <class D> shared_ptr(nullptr_t p, D d); 400 template <class D, class A> shared_ptr(nullptr_t p, D d, A a); 401 template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p) noexcept; 402 shared_ptr(const shared_ptr& r) noexcept; 403 template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept; 404 shared_ptr(shared_ptr&& r) noexcept; 405 template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept; 406 template<class Y> explicit shared_ptr(const weak_ptr<Y>& r); 407 template<class Y> shared_ptr(auto_ptr<Y>&& r); 408 template <class Y, class D> shared_ptr(unique_ptr<Y, D>&& r); 409 shared_ptr(nullptr_t) : shared_ptr() { } 410 411 // destructor: 412 ~shared_ptr(); 413 414 // assignment: 415 shared_ptr& operator=(const shared_ptr& r) noexcept; 416 template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept; 417 shared_ptr& operator=(shared_ptr&& r) noexcept; 418 template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r); 419 template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); 420 template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r); 421 422 // modifiers: 423 void swap(shared_ptr& r) noexcept; 424 void reset() noexcept; 425 template<class Y> void reset(Y* p); 426 template<class Y, class D> void reset(Y* p, D d); 427 template<class Y, class D, class A> void reset(Y* p, D d, A a); 428 429 // observers: 430 T* get() const noexcept; 431 T& operator*() const noexcept; 432 T* operator->() const noexcept; 433 long use_count() const noexcept; 434 bool unique() const noexcept; 435 explicit operator bool() const noexcept; 436 template<class U> bool owner_before(shared_ptr<U> const& b) const; 437 template<class U> bool owner_before(weak_ptr<U> const& b) const; 438}; 439 440// shared_ptr comparisons: 441template<class T, class U> 442 bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 443template<class T, class U> 444 bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 445template<class T, class U> 446 bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 447template<class T, class U> 448 bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 449template<class T, class U> 450 bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 451template<class T, class U> 452 bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 453 454template <class T> 455 bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept; 456template <class T> 457 bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept; 458template <class T> 459 bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept; 460template <class T> 461 bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept; 462template <class T> 463 bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept; 464template <class T> 465bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept; 466template <class T> 467 bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept; 468template <class T> 469 bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept; 470template <class T> 471 bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept; 472template <class T> 473 bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept; 474template <class T> 475 bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept; 476template <class T> 477 bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept; 478 479// shared_ptr specialized algorithms: 480template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept; 481 482// shared_ptr casts: 483template<class T, class U> 484 shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept; 485template<class T, class U> 486 shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept; 487template<class T, class U> 488 shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept; 489 490// shared_ptr I/O: 491template<class E, class T, class Y> 492 basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, shared_ptr<Y> const& p); 493 494// shared_ptr get_deleter: 495template<class D, class T> D* get_deleter(shared_ptr<T> const& p) noexcept; 496 497template<class T, class... Args> 498 shared_ptr<T> make_shared(Args&&... args); 499template<class T, class A, class... Args> 500 shared_ptr<T> allocate_shared(const A& a, Args&&... args); 501 502template<class T> 503class weak_ptr 504{ 505public: 506 typedef T element_type; 507 508 // constructors 509 constexpr weak_ptr() noexcept; 510 template<class Y> weak_ptr(shared_ptr<Y> const& r) noexcept; 511 weak_ptr(weak_ptr const& r) noexcept; 512 template<class Y> weak_ptr(weak_ptr<Y> const& r) noexcept; 513 weak_ptr(weak_ptr&& r) noexcept; // C++14 514 template<class Y> weak_ptr(weak_ptr<Y>&& r) noexcept; // C++14 515 516 // destructor 517 ~weak_ptr(); 518 519 // assignment 520 weak_ptr& operator=(weak_ptr const& r) noexcept; 521 template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r) noexcept; 522 template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r) noexcept; 523 weak_ptr& operator=(weak_ptr&& r) noexcept; // C++14 524 template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r) noexcept; // C++14 525 526 // modifiers 527 void swap(weak_ptr& r) noexcept; 528 void reset() noexcept; 529 530 // observers 531 long use_count() const noexcept; 532 bool expired() const noexcept; 533 shared_ptr<T> lock() const noexcept; 534 template<class U> bool owner_before(shared_ptr<U> const& b) const; 535 template<class U> bool owner_before(weak_ptr<U> const& b) const; 536}; 537 538// weak_ptr specialized algorithms: 539template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept; 540 541// class owner_less: 542template<class T> struct owner_less; 543 544template<class T> 545struct owner_less<shared_ptr<T>> 546 : binary_function<shared_ptr<T>, shared_ptr<T>, bool> 547{ 548 typedef bool result_type; 549 bool operator()(shared_ptr<T> const&, shared_ptr<T> const&) const; 550 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const; 551 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const; 552}; 553 554template<class T> 555struct owner_less<weak_ptr<T>> 556 : binary_function<weak_ptr<T>, weak_ptr<T>, bool> 557{ 558 typedef bool result_type; 559 bool operator()(weak_ptr<T> const&, weak_ptr<T> const&) const; 560 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const; 561 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const; 562}; 563 564template<class T> 565class enable_shared_from_this 566{ 567protected: 568 constexpr enable_shared_from_this() noexcept; 569 enable_shared_from_this(enable_shared_from_this const&) noexcept; 570 enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept; 571 ~enable_shared_from_this(); 572public: 573 shared_ptr<T> shared_from_this(); 574 shared_ptr<T const> shared_from_this() const; 575}; 576 577template<class T> 578 bool atomic_is_lock_free(const shared_ptr<T>* p); 579template<class T> 580 shared_ptr<T> atomic_load(const shared_ptr<T>* p); 581template<class T> 582 shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo); 583template<class T> 584 void atomic_store(shared_ptr<T>* p, shared_ptr<T> r); 585template<class T> 586 void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 587template<class T> 588 shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r); 589template<class T> 590 shared_ptr<T> 591 atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 592template<class T> 593 bool 594 atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 595template<class T> 596 bool 597 atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 598template<class T> 599 bool 600 atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 601 shared_ptr<T> w, memory_order success, 602 memory_order failure); 603template<class T> 604 bool 605 atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 606 shared_ptr<T> w, memory_order success, 607 memory_order failure); 608// Hash support 609template <class T> struct hash; 610template <class T, class D> struct hash<unique_ptr<T, D> >; 611template <class T> struct hash<shared_ptr<T> >; 612 613// Pointer safety 614enum class pointer_safety { relaxed, preferred, strict }; 615void declare_reachable(void *p); 616template <class T> T *undeclare_reachable(T *p); 617void declare_no_pointers(char *p, size_t n); 618void undeclare_no_pointers(char *p, size_t n); 619pointer_safety get_pointer_safety() noexcept; 620 621void* align(size_t alignment, size_t size, void*& ptr, size_t& space); 622 623} // std 624 625*/ 626 627#include <__config> 628#include <type_traits> 629#include <typeinfo> 630#include <cstddef> 631#include <cstdint> 632#include <new> 633#include <utility> 634#include <limits> 635#include <iterator> 636#include <__functional_base> 637#include <iosfwd> 638#include <tuple> 639#include <stdexcept> 640#include <cstring> 641 642#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 643# include <atomic> 644#endif 645 646#include <__undef_min_max> 647 648#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 649#pragma GCC system_header 650#endif 651 652_LIBCPP_BEGIN_NAMESPACE_STD 653 654template <class _ValueType> 655inline _LIBCPP_ALWAYS_INLINE 656_ValueType __libcpp_relaxed_load(_ValueType const* __value) { 657#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 658 defined(__ATOMIC_RELAXED) && \ 659 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407) 660 return __atomic_load_n(__value, __ATOMIC_RELAXED); 661#else 662 return *__value; 663#endif 664} 665 666template <class _ValueType> 667inline _LIBCPP_ALWAYS_INLINE 668_ValueType __libcpp_acquire_load(_ValueType const* __value) { 669#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 670 defined(__ATOMIC_ACQUIRE) && \ 671 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407) 672 return __atomic_load_n(__value, __ATOMIC_ACQUIRE); 673#else 674 return *__value; 675#endif 676} 677 678// addressof moved to <type_traits> 679 680template <class _Tp> class allocator; 681 682template <> 683class _LIBCPP_TEMPLATE_VIS allocator<void> 684{ 685public: 686 typedef void* pointer; 687 typedef const void* const_pointer; 688 typedef void value_type; 689 690 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 691}; 692 693template <> 694class _LIBCPP_TEMPLATE_VIS allocator<const void> 695{ 696public: 697 typedef const void* pointer; 698 typedef const void* const_pointer; 699 typedef const void value_type; 700 701 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 702}; 703 704// pointer_traits 705 706template <class _Tp> 707struct __has_element_type 708{ 709private: 710 struct __two {char __lx; char __lxx;}; 711 template <class _Up> static __two __test(...); 712 template <class _Up> static char __test(typename _Up::element_type* = 0); 713public: 714 static const bool value = sizeof(__test<_Tp>(0)) == 1; 715}; 716 717template <class _Ptr, bool = __has_element_type<_Ptr>::value> 718struct __pointer_traits_element_type; 719 720template <class _Ptr> 721struct __pointer_traits_element_type<_Ptr, true> 722{ 723 typedef typename _Ptr::element_type type; 724}; 725 726#ifndef _LIBCPP_HAS_NO_VARIADICS 727 728template <template <class, class...> class _Sp, class _Tp, class ..._Args> 729struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true> 730{ 731 typedef typename _Sp<_Tp, _Args...>::element_type type; 732}; 733 734template <template <class, class...> class _Sp, class _Tp, class ..._Args> 735struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false> 736{ 737 typedef _Tp type; 738}; 739 740#else // _LIBCPP_HAS_NO_VARIADICS 741 742template <template <class> class _Sp, class _Tp> 743struct __pointer_traits_element_type<_Sp<_Tp>, true> 744{ 745 typedef typename _Sp<_Tp>::element_type type; 746}; 747 748template <template <class> class _Sp, class _Tp> 749struct __pointer_traits_element_type<_Sp<_Tp>, false> 750{ 751 typedef _Tp type; 752}; 753 754template <template <class, class> class _Sp, class _Tp, class _A0> 755struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true> 756{ 757 typedef typename _Sp<_Tp, _A0>::element_type type; 758}; 759 760template <template <class, class> class _Sp, class _Tp, class _A0> 761struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false> 762{ 763 typedef _Tp type; 764}; 765 766template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 767struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true> 768{ 769 typedef typename _Sp<_Tp, _A0, _A1>::element_type type; 770}; 771 772template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 773struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false> 774{ 775 typedef _Tp type; 776}; 777 778template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 779 class _A1, class _A2> 780struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true> 781{ 782 typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type; 783}; 784 785template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 786 class _A1, class _A2> 787struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false> 788{ 789 typedef _Tp type; 790}; 791 792#endif // _LIBCPP_HAS_NO_VARIADICS 793 794template <class _Tp> 795struct __has_difference_type 796{ 797private: 798 struct __two {char __lx; char __lxx;}; 799 template <class _Up> static __two __test(...); 800 template <class _Up> static char __test(typename _Up::difference_type* = 0); 801public: 802 static const bool value = sizeof(__test<_Tp>(0)) == 1; 803}; 804 805template <class _Ptr, bool = __has_difference_type<_Ptr>::value> 806struct __pointer_traits_difference_type 807{ 808 typedef ptrdiff_t type; 809}; 810 811template <class _Ptr> 812struct __pointer_traits_difference_type<_Ptr, true> 813{ 814 typedef typename _Ptr::difference_type type; 815}; 816 817template <class _Tp, class _Up> 818struct __has_rebind 819{ 820private: 821 struct __two {char __lx; char __lxx;}; 822 template <class _Xp> static __two __test(...); 823 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0); 824public: 825 static const bool value = sizeof(__test<_Tp>(0)) == 1; 826}; 827 828template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 829struct __pointer_traits_rebind 830{ 831#ifndef _LIBCPP_CXX03_LANG 832 typedef typename _Tp::template rebind<_Up> type; 833#else 834 typedef typename _Tp::template rebind<_Up>::other type; 835#endif 836}; 837 838#ifndef _LIBCPP_HAS_NO_VARIADICS 839 840template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 841struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true> 842{ 843#ifndef _LIBCPP_CXX03_LANG 844 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type; 845#else 846 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type; 847#endif 848}; 849 850template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 851struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false> 852{ 853 typedef _Sp<_Up, _Args...> type; 854}; 855 856#else // _LIBCPP_HAS_NO_VARIADICS 857 858template <template <class> class _Sp, class _Tp, class _Up> 859struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true> 860{ 861#ifndef _LIBCPP_CXX03_LANG 862 typedef typename _Sp<_Tp>::template rebind<_Up> type; 863#else 864 typedef typename _Sp<_Tp>::template rebind<_Up>::other type; 865#endif 866}; 867 868template <template <class> class _Sp, class _Tp, class _Up> 869struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false> 870{ 871 typedef _Sp<_Up> type; 872}; 873 874template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 875struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true> 876{ 877#ifndef _LIBCPP_CXX03_LANG 878 typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type; 879#else 880 typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type; 881#endif 882}; 883 884template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 885struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false> 886{ 887 typedef _Sp<_Up, _A0> type; 888}; 889 890template <template <class, class, class> class _Sp, class _Tp, class _A0, 891 class _A1, class _Up> 892struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true> 893{ 894#ifndef _LIBCPP_CXX03_LANG 895 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type; 896#else 897 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type; 898#endif 899}; 900 901template <template <class, class, class> class _Sp, class _Tp, class _A0, 902 class _A1, class _Up> 903struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false> 904{ 905 typedef _Sp<_Up, _A0, _A1> type; 906}; 907 908template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 909 class _A1, class _A2, class _Up> 910struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true> 911{ 912#ifndef _LIBCPP_CXX03_LANG 913 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type; 914#else 915 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 916#endif 917}; 918 919template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 920 class _A1, class _A2, class _Up> 921struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false> 922{ 923 typedef _Sp<_Up, _A0, _A1, _A2> type; 924}; 925 926#endif // _LIBCPP_HAS_NO_VARIADICS 927 928template <class _Ptr> 929struct _LIBCPP_TEMPLATE_VIS pointer_traits 930{ 931 typedef _Ptr pointer; 932 typedef typename __pointer_traits_element_type<pointer>::type element_type; 933 typedef typename __pointer_traits_difference_type<pointer>::type difference_type; 934 935#ifndef _LIBCPP_CXX03_LANG 936 template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type; 937#else 938 template <class _Up> struct rebind 939 {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;}; 940#endif // _LIBCPP_CXX03_LANG 941 942private: 943 struct __nat {}; 944public: 945 _LIBCPP_INLINE_VISIBILITY 946 static pointer pointer_to(typename conditional<is_void<element_type>::value, 947 __nat, element_type>::type& __r) 948 {return pointer::pointer_to(__r);} 949}; 950 951template <class _Tp> 952struct _LIBCPP_TEMPLATE_VIS pointer_traits<_Tp*> 953{ 954 typedef _Tp* pointer; 955 typedef _Tp element_type; 956 typedef ptrdiff_t difference_type; 957 958#ifndef _LIBCPP_CXX03_LANG 959 template <class _Up> using rebind = _Up*; 960#else 961 template <class _Up> struct rebind {typedef _Up* other;}; 962#endif 963 964private: 965 struct __nat {}; 966public: 967 _LIBCPP_INLINE_VISIBILITY 968 static pointer pointer_to(typename conditional<is_void<element_type>::value, 969 __nat, element_type>::type& __r) _NOEXCEPT 970 {return _VSTD::addressof(__r);} 971}; 972 973template <class _From, class _To> 974struct __rebind_pointer { 975#ifndef _LIBCPP_CXX03_LANG 976 typedef typename pointer_traits<_From>::template rebind<_To> type; 977#else 978 typedef typename pointer_traits<_From>::template rebind<_To>::other type; 979#endif 980}; 981 982// allocator_traits 983 984namespace __has_pointer_type_imp 985{ 986 template <class _Up> static __two __test(...); 987 template <class _Up> static char __test(typename _Up::pointer* = 0); 988} 989 990template <class _Tp> 991struct __has_pointer_type 992 : public integral_constant<bool, sizeof(__has_pointer_type_imp::__test<_Tp>(0)) == 1> 993{ 994}; 995 996namespace __pointer_type_imp 997{ 998 999template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value> 1000struct __pointer_type 1001{ 1002 typedef typename _Dp::pointer type; 1003}; 1004 1005template <class _Tp, class _Dp> 1006struct __pointer_type<_Tp, _Dp, false> 1007{ 1008 typedef _Tp* type; 1009}; 1010 1011} // __pointer_type_imp 1012 1013template <class _Tp, class _Dp> 1014struct __pointer_type 1015{ 1016 typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type; 1017}; 1018 1019template <class _Tp> 1020struct __has_const_pointer 1021{ 1022private: 1023 struct __two {char __lx; char __lxx;}; 1024 template <class _Up> static __two __test(...); 1025 template <class _Up> static char __test(typename _Up::const_pointer* = 0); 1026public: 1027 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1028}; 1029 1030template <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value> 1031struct __const_pointer 1032{ 1033 typedef typename _Alloc::const_pointer type; 1034}; 1035 1036template <class _Tp, class _Ptr, class _Alloc> 1037struct __const_pointer<_Tp, _Ptr, _Alloc, false> 1038{ 1039#ifndef _LIBCPP_CXX03_LANG 1040 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp> type; 1041#else 1042 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type; 1043#endif 1044}; 1045 1046template <class _Tp> 1047struct __has_void_pointer 1048{ 1049private: 1050 struct __two {char __lx; char __lxx;}; 1051 template <class _Up> static __two __test(...); 1052 template <class _Up> static char __test(typename _Up::void_pointer* = 0); 1053public: 1054 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1055}; 1056 1057template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value> 1058struct __void_pointer 1059{ 1060 typedef typename _Alloc::void_pointer type; 1061}; 1062 1063template <class _Ptr, class _Alloc> 1064struct __void_pointer<_Ptr, _Alloc, false> 1065{ 1066#ifndef _LIBCPP_CXX03_LANG 1067 typedef typename pointer_traits<_Ptr>::template rebind<void> type; 1068#else 1069 typedef typename pointer_traits<_Ptr>::template rebind<void>::other type; 1070#endif 1071}; 1072 1073template <class _Tp> 1074struct __has_const_void_pointer 1075{ 1076private: 1077 struct __two {char __lx; char __lxx;}; 1078 template <class _Up> static __two __test(...); 1079 template <class _Up> static char __test(typename _Up::const_void_pointer* = 0); 1080public: 1081 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1082}; 1083 1084template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value> 1085struct __const_void_pointer 1086{ 1087 typedef typename _Alloc::const_void_pointer type; 1088}; 1089 1090template <class _Ptr, class _Alloc> 1091struct __const_void_pointer<_Ptr, _Alloc, false> 1092{ 1093#ifndef _LIBCPP_CXX03_LANG 1094 typedef typename pointer_traits<_Ptr>::template rebind<const void> type; 1095#else 1096 typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type; 1097#endif 1098}; 1099 1100template <class _Tp> 1101inline _LIBCPP_INLINE_VISIBILITY 1102_Tp* 1103__to_raw_pointer(_Tp* __p) _NOEXCEPT 1104{ 1105 return __p; 1106} 1107 1108template <class _Pointer> 1109inline _LIBCPP_INLINE_VISIBILITY 1110typename pointer_traits<_Pointer>::element_type* 1111__to_raw_pointer(_Pointer __p) _NOEXCEPT 1112{ 1113 return _VSTD::__to_raw_pointer(__p.operator->()); 1114} 1115 1116template <class _Tp> 1117struct __has_size_type 1118{ 1119private: 1120 struct __two {char __lx; char __lxx;}; 1121 template <class _Up> static __two __test(...); 1122 template <class _Up> static char __test(typename _Up::size_type* = 0); 1123public: 1124 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1125}; 1126 1127template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value> 1128struct __size_type 1129{ 1130 typedef typename make_unsigned<_DiffType>::type type; 1131}; 1132 1133template <class _Alloc, class _DiffType> 1134struct __size_type<_Alloc, _DiffType, true> 1135{ 1136 typedef typename _Alloc::size_type type; 1137}; 1138 1139template <class _Tp> 1140struct __has_propagate_on_container_copy_assignment 1141{ 1142private: 1143 struct __two {char __lx; char __lxx;}; 1144 template <class _Up> static __two __test(...); 1145 template <class _Up> static char __test(typename _Up::propagate_on_container_copy_assignment* = 0); 1146public: 1147 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1148}; 1149 1150template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value> 1151struct __propagate_on_container_copy_assignment 1152{ 1153 typedef false_type type; 1154}; 1155 1156template <class _Alloc> 1157struct __propagate_on_container_copy_assignment<_Alloc, true> 1158{ 1159 typedef typename _Alloc::propagate_on_container_copy_assignment type; 1160}; 1161 1162template <class _Tp> 1163struct __has_propagate_on_container_move_assignment 1164{ 1165private: 1166 struct __two {char __lx; char __lxx;}; 1167 template <class _Up> static __two __test(...); 1168 template <class _Up> static char __test(typename _Up::propagate_on_container_move_assignment* = 0); 1169public: 1170 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1171}; 1172 1173template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value> 1174struct __propagate_on_container_move_assignment 1175{ 1176 typedef false_type type; 1177}; 1178 1179template <class _Alloc> 1180struct __propagate_on_container_move_assignment<_Alloc, true> 1181{ 1182 typedef typename _Alloc::propagate_on_container_move_assignment type; 1183}; 1184 1185template <class _Tp> 1186struct __has_propagate_on_container_swap 1187{ 1188private: 1189 struct __two {char __lx; char __lxx;}; 1190 template <class _Up> static __two __test(...); 1191 template <class _Up> static char __test(typename _Up::propagate_on_container_swap* = 0); 1192public: 1193 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1194}; 1195 1196template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value> 1197struct __propagate_on_container_swap 1198{ 1199 typedef false_type type; 1200}; 1201 1202template <class _Alloc> 1203struct __propagate_on_container_swap<_Alloc, true> 1204{ 1205 typedef typename _Alloc::propagate_on_container_swap type; 1206}; 1207 1208template <class _Tp> 1209struct __has_is_always_equal 1210{ 1211private: 1212 struct __two {char __lx; char __lxx;}; 1213 template <class _Up> static __two __test(...); 1214 template <class _Up> static char __test(typename _Up::is_always_equal* = 0); 1215public: 1216 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1217}; 1218 1219template <class _Alloc, bool = __has_is_always_equal<_Alloc>::value> 1220struct __is_always_equal 1221{ 1222 typedef typename _VSTD::is_empty<_Alloc>::type type; 1223}; 1224 1225template <class _Alloc> 1226struct __is_always_equal<_Alloc, true> 1227{ 1228 typedef typename _Alloc::is_always_equal type; 1229}; 1230 1231template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 1232struct __has_rebind_other 1233{ 1234private: 1235 struct __two {char __lx; char __lxx;}; 1236 template <class _Xp> static __two __test(...); 1237 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0); 1238public: 1239 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1240}; 1241 1242template <class _Tp, class _Up> 1243struct __has_rebind_other<_Tp, _Up, false> 1244{ 1245 static const bool value = false; 1246}; 1247 1248template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value> 1249struct __allocator_traits_rebind 1250{ 1251 typedef typename _Tp::template rebind<_Up>::other type; 1252}; 1253 1254#ifndef _LIBCPP_HAS_NO_VARIADICS 1255 1256template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1257struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true> 1258{ 1259 typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type; 1260}; 1261 1262template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1263struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false> 1264{ 1265 typedef _Alloc<_Up, _Args...> type; 1266}; 1267 1268#else // _LIBCPP_HAS_NO_VARIADICS 1269 1270template <template <class> class _Alloc, class _Tp, class _Up> 1271struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true> 1272{ 1273 typedef typename _Alloc<_Tp>::template rebind<_Up>::other type; 1274}; 1275 1276template <template <class> class _Alloc, class _Tp, class _Up> 1277struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false> 1278{ 1279 typedef _Alloc<_Up> type; 1280}; 1281 1282template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1283struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true> 1284{ 1285 typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type; 1286}; 1287 1288template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1289struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false> 1290{ 1291 typedef _Alloc<_Up, _A0> type; 1292}; 1293 1294template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1295 class _A1, class _Up> 1296struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true> 1297{ 1298 typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type; 1299}; 1300 1301template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1302 class _A1, class _Up> 1303struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false> 1304{ 1305 typedef _Alloc<_Up, _A0, _A1> type; 1306}; 1307 1308template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1309 class _A1, class _A2, class _Up> 1310struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true> 1311{ 1312 typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 1313}; 1314 1315template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1316 class _A1, class _A2, class _Up> 1317struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false> 1318{ 1319 typedef _Alloc<_Up, _A0, _A1, _A2> type; 1320}; 1321 1322#endif // _LIBCPP_HAS_NO_VARIADICS 1323 1324#ifndef _LIBCPP_CXX03_LANG 1325 1326template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1327auto 1328__has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1329 -> decltype(__a.allocate(__sz, __p), true_type()); 1330 1331template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1332auto 1333__has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1334 -> false_type; 1335 1336template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1337struct __has_allocate_hint 1338 : integral_constant<bool, 1339 is_same< 1340 decltype(__has_allocate_hint_test(declval<_Alloc>(), 1341 declval<_SizeType>(), 1342 declval<_ConstVoidPtr>())), 1343 true_type>::value> 1344{ 1345}; 1346 1347#else // _LIBCPP_CXX03_LANG 1348 1349template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1350struct __has_allocate_hint 1351 : true_type 1352{ 1353}; 1354 1355#endif // _LIBCPP_CXX03_LANG 1356 1357#if !defined(_LIBCPP_CXX03_LANG) 1358 1359template <class _Alloc, class _Tp, class ..._Args> 1360decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(), 1361 _VSTD::declval<_Args>()...), 1362 true_type()) 1363__has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args); 1364 1365template <class _Alloc, class _Pointer, class ..._Args> 1366false_type 1367__has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args); 1368 1369template <class _Alloc, class _Pointer, class ..._Args> 1370struct __has_construct 1371 : integral_constant<bool, 1372 is_same< 1373 decltype(__has_construct_test(declval<_Alloc>(), 1374 declval<_Pointer>(), 1375 declval<_Args>()...)), 1376 true_type>::value> 1377{ 1378}; 1379 1380template <class _Alloc, class _Pointer> 1381auto 1382__has_destroy_test(_Alloc&& __a, _Pointer&& __p) 1383 -> decltype(__a.destroy(__p), true_type()); 1384 1385template <class _Alloc, class _Pointer> 1386auto 1387__has_destroy_test(const _Alloc& __a, _Pointer&& __p) 1388 -> false_type; 1389 1390template <class _Alloc, class _Pointer> 1391struct __has_destroy 1392 : integral_constant<bool, 1393 is_same< 1394 decltype(__has_destroy_test(declval<_Alloc>(), 1395 declval<_Pointer>())), 1396 true_type>::value> 1397{ 1398}; 1399 1400template <class _Alloc> 1401auto 1402__has_max_size_test(_Alloc&& __a) 1403 -> decltype(__a.max_size(), true_type()); 1404 1405template <class _Alloc> 1406auto 1407__has_max_size_test(const volatile _Alloc& __a) 1408 -> false_type; 1409 1410template <class _Alloc> 1411struct __has_max_size 1412 : integral_constant<bool, 1413 is_same< 1414 decltype(__has_max_size_test(declval<_Alloc&>())), 1415 true_type>::value> 1416{ 1417}; 1418 1419template <class _Alloc> 1420auto 1421__has_select_on_container_copy_construction_test(_Alloc&& __a) 1422 -> decltype(__a.select_on_container_copy_construction(), true_type()); 1423 1424template <class _Alloc> 1425auto 1426__has_select_on_container_copy_construction_test(const volatile _Alloc& __a) 1427 -> false_type; 1428 1429template <class _Alloc> 1430struct __has_select_on_container_copy_construction 1431 : integral_constant<bool, 1432 is_same< 1433 decltype(__has_select_on_container_copy_construction_test(declval<_Alloc&>())), 1434 true_type>::value> 1435{ 1436}; 1437 1438#else // _LIBCPP_CXX03_LANG 1439 1440#ifndef _LIBCPP_HAS_NO_VARIADICS 1441 1442template <class _Alloc, class _Pointer, class ..._Args> 1443struct __has_construct 1444 : false_type 1445{ 1446}; 1447 1448#else // _LIBCPP_HAS_NO_VARIADICS 1449 1450template <class _Alloc, class _Pointer, class _Args> 1451struct __has_construct 1452 : false_type 1453{ 1454}; 1455 1456#endif // _LIBCPP_HAS_NO_VARIADICS 1457 1458template <class _Alloc, class _Pointer> 1459struct __has_destroy 1460 : false_type 1461{ 1462}; 1463 1464template <class _Alloc> 1465struct __has_max_size 1466 : true_type 1467{ 1468}; 1469 1470template <class _Alloc> 1471struct __has_select_on_container_copy_construction 1472 : false_type 1473{ 1474}; 1475 1476#endif // _LIBCPP_CXX03_LANG 1477 1478template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value> 1479struct __alloc_traits_difference_type 1480{ 1481 typedef typename pointer_traits<_Ptr>::difference_type type; 1482}; 1483 1484template <class _Alloc, class _Ptr> 1485struct __alloc_traits_difference_type<_Alloc, _Ptr, true> 1486{ 1487 typedef typename _Alloc::difference_type type; 1488}; 1489 1490template <class _Alloc> 1491struct _LIBCPP_TEMPLATE_VIS allocator_traits 1492{ 1493 typedef _Alloc allocator_type; 1494 typedef typename allocator_type::value_type value_type; 1495 1496 typedef typename __pointer_type<value_type, allocator_type>::type pointer; 1497 typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer; 1498 typedef typename __void_pointer<pointer, allocator_type>::type void_pointer; 1499 typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer; 1500 1501 typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type; 1502 typedef typename __size_type<allocator_type, difference_type>::type size_type; 1503 1504 typedef typename __propagate_on_container_copy_assignment<allocator_type>::type 1505 propagate_on_container_copy_assignment; 1506 typedef typename __propagate_on_container_move_assignment<allocator_type>::type 1507 propagate_on_container_move_assignment; 1508 typedef typename __propagate_on_container_swap<allocator_type>::type 1509 propagate_on_container_swap; 1510 typedef typename __is_always_equal<allocator_type>::type 1511 is_always_equal; 1512 1513#ifndef _LIBCPP_CXX03_LANG 1514 template <class _Tp> using rebind_alloc = 1515 typename __allocator_traits_rebind<allocator_type, _Tp>::type; 1516 template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>; 1517#else // _LIBCPP_CXX03_LANG 1518 template <class _Tp> struct rebind_alloc 1519 {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;}; 1520 template <class _Tp> struct rebind_traits 1521 {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;}; 1522#endif // _LIBCPP_CXX03_LANG 1523 1524 _LIBCPP_INLINE_VISIBILITY 1525 static pointer allocate(allocator_type& __a, size_type __n) 1526 {return __a.allocate(__n);} 1527 _LIBCPP_INLINE_VISIBILITY 1528 static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint) 1529 {return allocate(__a, __n, __hint, 1530 __has_allocate_hint<allocator_type, size_type, const_void_pointer>());} 1531 1532 _LIBCPP_INLINE_VISIBILITY 1533 static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT 1534 {__a.deallocate(__p, __n);} 1535 1536#ifndef _LIBCPP_HAS_NO_VARIADICS 1537 template <class _Tp, class... _Args> 1538 _LIBCPP_INLINE_VISIBILITY 1539 static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args) 1540 {__construct(__has_construct<allocator_type, _Tp*, _Args...>(), 1541 __a, __p, _VSTD::forward<_Args>(__args)...);} 1542#else // _LIBCPP_HAS_NO_VARIADICS 1543 template <class _Tp> 1544 _LIBCPP_INLINE_VISIBILITY 1545 static void construct(allocator_type&, _Tp* __p) 1546 { 1547 ::new ((void*)__p) _Tp(); 1548 } 1549 template <class _Tp, class _A0> 1550 _LIBCPP_INLINE_VISIBILITY 1551 static void construct(allocator_type&, _Tp* __p, const _A0& __a0) 1552 { 1553 ::new ((void*)__p) _Tp(__a0); 1554 } 1555 template <class _Tp, class _A0, class _A1> 1556 _LIBCPP_INLINE_VISIBILITY 1557 static void construct(allocator_type&, _Tp* __p, const _A0& __a0, 1558 const _A1& __a1) 1559 { 1560 ::new ((void*)__p) _Tp(__a0, __a1); 1561 } 1562 template <class _Tp, class _A0, class _A1, class _A2> 1563 _LIBCPP_INLINE_VISIBILITY 1564 static void construct(allocator_type&, _Tp* __p, const _A0& __a0, 1565 const _A1& __a1, const _A2& __a2) 1566 { 1567 ::new ((void*)__p) _Tp(__a0, __a1, __a2); 1568 } 1569#endif // _LIBCPP_HAS_NO_VARIADICS 1570 1571 template <class _Tp> 1572 _LIBCPP_INLINE_VISIBILITY 1573 static void destroy(allocator_type& __a, _Tp* __p) 1574 {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);} 1575 1576 _LIBCPP_INLINE_VISIBILITY 1577 static size_type max_size(const allocator_type& __a) _NOEXCEPT 1578 {return __max_size(__has_max_size<const allocator_type>(), __a);} 1579 1580 _LIBCPP_INLINE_VISIBILITY 1581 static allocator_type 1582 select_on_container_copy_construction(const allocator_type& __a) 1583 {return select_on_container_copy_construction( 1584 __has_select_on_container_copy_construction<const allocator_type>(), 1585 __a);} 1586 1587 template <class _Ptr> 1588 _LIBCPP_INLINE_VISIBILITY 1589 static 1590 void 1591 __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) 1592 { 1593 for (; __begin1 != __end1; ++__begin1, ++__begin2) 1594 construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1)); 1595 } 1596 1597 template <class _Tp> 1598 _LIBCPP_INLINE_VISIBILITY 1599 static 1600 typename enable_if 1601 < 1602 (is_same<allocator_type, allocator<_Tp> >::value 1603 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1604 is_trivially_move_constructible<_Tp>::value, 1605 void 1606 >::type 1607 __construct_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1608 { 1609 ptrdiff_t _Np = __end1 - __begin1; 1610 if (_Np > 0) 1611 { 1612 _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp)); 1613 __begin2 += _Np; 1614 } 1615 } 1616 1617 template <class _Iter, class _Ptr> 1618 _LIBCPP_INLINE_VISIBILITY 1619 static 1620 void 1621 __construct_range_forward(allocator_type& __a, _Iter __begin1, _Iter __end1, _Ptr& __begin2) 1622 { 1623 for (; __begin1 != __end1; ++__begin1, (void) ++__begin2) 1624 construct(__a, _VSTD::__to_raw_pointer(__begin2), *__begin1); 1625 } 1626 1627 template <class _Tp> 1628 _LIBCPP_INLINE_VISIBILITY 1629 static 1630 typename enable_if 1631 < 1632 (is_same<allocator_type, allocator<_Tp> >::value 1633 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1634 is_trivially_move_constructible<_Tp>::value, 1635 void 1636 >::type 1637 __construct_range_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1638 { 1639 typedef typename remove_const<_Tp>::type _Vp; 1640 ptrdiff_t _Np = __end1 - __begin1; 1641 if (_Np > 0) 1642 { 1643 _VSTD::memcpy(const_cast<_Vp*>(__begin2), __begin1, _Np * sizeof(_Tp)); 1644 __begin2 += _Np; 1645 } 1646 } 1647 1648 template <class _Ptr> 1649 _LIBCPP_INLINE_VISIBILITY 1650 static 1651 void 1652 __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2) 1653 { 1654 while (__end1 != __begin1) 1655 { 1656 construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1)); 1657 --__end2; 1658 } 1659 } 1660 1661 template <class _Tp> 1662 _LIBCPP_INLINE_VISIBILITY 1663 static 1664 typename enable_if 1665 < 1666 (is_same<allocator_type, allocator<_Tp> >::value 1667 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1668 is_trivially_move_constructible<_Tp>::value, 1669 void 1670 >::type 1671 __construct_backward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __end2) 1672 { 1673 ptrdiff_t _Np = __end1 - __begin1; 1674 __end2 -= _Np; 1675 if (_Np > 0) 1676 _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp)); 1677 } 1678 1679private: 1680 1681 _LIBCPP_INLINE_VISIBILITY 1682 static pointer allocate(allocator_type& __a, size_type __n, 1683 const_void_pointer __hint, true_type) 1684 {return __a.allocate(__n, __hint);} 1685 _LIBCPP_INLINE_VISIBILITY 1686 static pointer allocate(allocator_type& __a, size_type __n, 1687 const_void_pointer, false_type) 1688 {return __a.allocate(__n);} 1689 1690#ifndef _LIBCPP_HAS_NO_VARIADICS 1691 template <class _Tp, class... _Args> 1692 _LIBCPP_INLINE_VISIBILITY 1693 static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args) 1694 {__a.construct(__p, _VSTD::forward<_Args>(__args)...);} 1695 template <class _Tp, class... _Args> 1696 _LIBCPP_INLINE_VISIBILITY 1697 static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args) 1698 { 1699 ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...); 1700 } 1701#endif // _LIBCPP_HAS_NO_VARIADICS 1702 1703 template <class _Tp> 1704 _LIBCPP_INLINE_VISIBILITY 1705 static void __destroy(true_type, allocator_type& __a, _Tp* __p) 1706 {__a.destroy(__p);} 1707 template <class _Tp> 1708 _LIBCPP_INLINE_VISIBILITY 1709 static void __destroy(false_type, allocator_type&, _Tp* __p) 1710 { 1711 __p->~_Tp(); 1712 } 1713 1714 _LIBCPP_INLINE_VISIBILITY 1715 static size_type __max_size(true_type, const allocator_type& __a) 1716 {return __a.max_size();} 1717 _LIBCPP_INLINE_VISIBILITY 1718 static size_type __max_size(false_type, const allocator_type&) 1719 {return numeric_limits<size_type>::max() / sizeof(value_type);} 1720 1721 _LIBCPP_INLINE_VISIBILITY 1722 static allocator_type 1723 select_on_container_copy_construction(true_type, const allocator_type& __a) 1724 {return __a.select_on_container_copy_construction();} 1725 _LIBCPP_INLINE_VISIBILITY 1726 static allocator_type 1727 select_on_container_copy_construction(false_type, const allocator_type& __a) 1728 {return __a;} 1729}; 1730 1731template <class _Traits, class _Tp> 1732struct __rebind_alloc_helper 1733{ 1734#ifndef _LIBCPP_CXX03_LANG 1735 typedef typename _Traits::template rebind_alloc<_Tp> type; 1736#else 1737 typedef typename _Traits::template rebind_alloc<_Tp>::other type; 1738#endif 1739}; 1740 1741// allocator 1742 1743template <class _Tp> 1744class _LIBCPP_TEMPLATE_VIS allocator 1745{ 1746public: 1747 typedef size_t size_type; 1748 typedef ptrdiff_t difference_type; 1749 typedef _Tp* pointer; 1750 typedef const _Tp* const_pointer; 1751 typedef _Tp& reference; 1752 typedef const _Tp& const_reference; 1753 typedef _Tp value_type; 1754 1755 typedef true_type propagate_on_container_move_assignment; 1756 typedef true_type is_always_equal; 1757 1758 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1759 1760 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1761 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1762 _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT 1763 {return _VSTD::addressof(__x);} 1764 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1765 {return _VSTD::addressof(__x);} 1766 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1767 { 1768 if (__n > max_size()) 1769 __throw_length_error("allocator<T>::allocate(size_t n)" 1770 " 'n' exceeds maximum supported size"); 1771 return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp))); 1772 } 1773 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1774 {_VSTD::__libcpp_deallocate((void*)__p);} 1775 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1776 {return size_type(~0) / sizeof(_Tp);} 1777#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1778 template <class _Up, class... _Args> 1779 _LIBCPP_INLINE_VISIBILITY 1780 void 1781 construct(_Up* __p, _Args&&... __args) 1782 { 1783 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1784 } 1785#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1786 _LIBCPP_INLINE_VISIBILITY 1787 void 1788 construct(pointer __p) 1789 { 1790 ::new((void*)__p) _Tp(); 1791 } 1792# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1793 1794 template <class _A0> 1795 _LIBCPP_INLINE_VISIBILITY 1796 void 1797 construct(pointer __p, _A0& __a0) 1798 { 1799 ::new((void*)__p) _Tp(__a0); 1800 } 1801 template <class _A0> 1802 _LIBCPP_INLINE_VISIBILITY 1803 void 1804 construct(pointer __p, const _A0& __a0) 1805 { 1806 ::new((void*)__p) _Tp(__a0); 1807 } 1808# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1809 template <class _A0, class _A1> 1810 _LIBCPP_INLINE_VISIBILITY 1811 void 1812 construct(pointer __p, _A0& __a0, _A1& __a1) 1813 { 1814 ::new((void*)__p) _Tp(__a0, __a1); 1815 } 1816 template <class _A0, class _A1> 1817 _LIBCPP_INLINE_VISIBILITY 1818 void 1819 construct(pointer __p, const _A0& __a0, _A1& __a1) 1820 { 1821 ::new((void*)__p) _Tp(__a0, __a1); 1822 } 1823 template <class _A0, class _A1> 1824 _LIBCPP_INLINE_VISIBILITY 1825 void 1826 construct(pointer __p, _A0& __a0, const _A1& __a1) 1827 { 1828 ::new((void*)__p) _Tp(__a0, __a1); 1829 } 1830 template <class _A0, class _A1> 1831 _LIBCPP_INLINE_VISIBILITY 1832 void 1833 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1834 { 1835 ::new((void*)__p) _Tp(__a0, __a1); 1836 } 1837#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1838 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1839}; 1840 1841template <class _Tp> 1842class _LIBCPP_TEMPLATE_VIS allocator<const _Tp> 1843{ 1844public: 1845 typedef size_t size_type; 1846 typedef ptrdiff_t difference_type; 1847 typedef const _Tp* pointer; 1848 typedef const _Tp* const_pointer; 1849 typedef const _Tp& reference; 1850 typedef const _Tp& const_reference; 1851 typedef const _Tp value_type; 1852 1853 typedef true_type propagate_on_container_move_assignment; 1854 typedef true_type is_always_equal; 1855 1856 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1857 1858 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1859 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1860 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1861 {return _VSTD::addressof(__x);} 1862 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1863 { 1864 if (__n > max_size()) 1865 __throw_length_error("allocator<const T>::allocate(size_t n)" 1866 " 'n' exceeds maximum supported size"); 1867 return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp))); 1868 } 1869 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1870 {_VSTD::__libcpp_deallocate((void*)__p);} 1871 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1872 {return size_type(~0) / sizeof(_Tp);} 1873#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1874 template <class _Up, class... _Args> 1875 _LIBCPP_INLINE_VISIBILITY 1876 void 1877 construct(_Up* __p, _Args&&... __args) 1878 { 1879 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1880 } 1881#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1882 _LIBCPP_INLINE_VISIBILITY 1883 void 1884 construct(pointer __p) 1885 { 1886 ::new((void*)__p) _Tp(); 1887 } 1888# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1889 1890 template <class _A0> 1891 _LIBCPP_INLINE_VISIBILITY 1892 void 1893 construct(pointer __p, _A0& __a0) 1894 { 1895 ::new((void*)__p) _Tp(__a0); 1896 } 1897 template <class _A0> 1898 _LIBCPP_INLINE_VISIBILITY 1899 void 1900 construct(pointer __p, const _A0& __a0) 1901 { 1902 ::new((void*)__p) _Tp(__a0); 1903 } 1904# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1905 template <class _A0, class _A1> 1906 _LIBCPP_INLINE_VISIBILITY 1907 void 1908 construct(pointer __p, _A0& __a0, _A1& __a1) 1909 { 1910 ::new((void*)__p) _Tp(__a0, __a1); 1911 } 1912 template <class _A0, class _A1> 1913 _LIBCPP_INLINE_VISIBILITY 1914 void 1915 construct(pointer __p, const _A0& __a0, _A1& __a1) 1916 { 1917 ::new((void*)__p) _Tp(__a0, __a1); 1918 } 1919 template <class _A0, class _A1> 1920 _LIBCPP_INLINE_VISIBILITY 1921 void 1922 construct(pointer __p, _A0& __a0, const _A1& __a1) 1923 { 1924 ::new((void*)__p) _Tp(__a0, __a1); 1925 } 1926 template <class _A0, class _A1> 1927 _LIBCPP_INLINE_VISIBILITY 1928 void 1929 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1930 { 1931 ::new((void*)__p) _Tp(__a0, __a1); 1932 } 1933#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1934 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1935}; 1936 1937template <class _Tp, class _Up> 1938inline _LIBCPP_INLINE_VISIBILITY 1939bool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;} 1940 1941template <class _Tp, class _Up> 1942inline _LIBCPP_INLINE_VISIBILITY 1943bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;} 1944 1945template <class _OutputIterator, class _Tp> 1946class _LIBCPP_TEMPLATE_VIS raw_storage_iterator 1947 : public iterator<output_iterator_tag, 1948 _Tp, // purposefully not C++03 1949 ptrdiff_t, // purposefully not C++03 1950 _Tp*, // purposefully not C++03 1951 raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03 1952{ 1953private: 1954 _OutputIterator __x_; 1955public: 1956 _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} 1957 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;} 1958 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element) 1959 {::new(&*__x_) _Tp(__element); return *this;} 1960#if _LIBCPP_STD_VER >= 14 1961 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element) 1962 {::new(&*__x_) _Tp(_VSTD::move(__element)); return *this;} 1963#endif 1964 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;} 1965 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int) 1966 {raw_storage_iterator __t(*this); ++__x_; return __t;} 1967#if _LIBCPP_STD_VER >= 14 1968 _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; } 1969#endif 1970}; 1971 1972template <class _Tp> 1973pair<_Tp*, ptrdiff_t> 1974get_temporary_buffer(ptrdiff_t __n) _NOEXCEPT 1975{ 1976 pair<_Tp*, ptrdiff_t> __r(0, 0); 1977 const ptrdiff_t __m = (~ptrdiff_t(0) ^ 1978 ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1))) 1979 / sizeof(_Tp); 1980 if (__n > __m) 1981 __n = __m; 1982 while (__n > 0) 1983 { 1984 __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow)); 1985 if (__r.first) 1986 { 1987 __r.second = __n; 1988 break; 1989 } 1990 __n /= 2; 1991 } 1992 return __r; 1993} 1994 1995template <class _Tp> 1996inline _LIBCPP_INLINE_VISIBILITY 1997void return_temporary_buffer(_Tp* __p) _NOEXCEPT {::operator delete(__p);} 1998 1999template <class _Tp> 2000struct auto_ptr_ref 2001{ 2002 _Tp* __ptr_; 2003}; 2004 2005template<class _Tp> 2006class _LIBCPP_TEMPLATE_VIS auto_ptr 2007{ 2008private: 2009 _Tp* __ptr_; 2010public: 2011 typedef _Tp element_type; 2012 2013 _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {} 2014 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {} 2015 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw() 2016 : __ptr_(__p.release()) {} 2017 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw() 2018 {reset(__p.release()); return *this;} 2019 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw() 2020 {reset(__p.release()); return *this;} 2021 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw() 2022 {reset(__p.__ptr_); return *this;} 2023 _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;} 2024 2025 _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw() 2026 {return *__ptr_;} 2027 _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;} 2028 _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;} 2029 _LIBCPP_INLINE_VISIBILITY _Tp* release() throw() 2030 { 2031 _Tp* __t = __ptr_; 2032 __ptr_ = 0; 2033 return __t; 2034 } 2035 _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw() 2036 { 2037 if (__ptr_ != __p) 2038 delete __ptr_; 2039 __ptr_ = __p; 2040 } 2041 2042 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {} 2043 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw() 2044 {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;} 2045 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw() 2046 {return auto_ptr<_Up>(release());} 2047}; 2048 2049template <> 2050class _LIBCPP_TEMPLATE_VIS auto_ptr<void> 2051{ 2052public: 2053 typedef void element_type; 2054}; 2055 2056template <class _T1, class _T2, bool = is_same<typename remove_cv<_T1>::type, 2057 typename remove_cv<_T2>::type>::value, 2058 bool = is_empty<_T1>::value 2059 && !__libcpp_is_final<_T1>::value, 2060 bool = is_empty<_T2>::value 2061 && !__libcpp_is_final<_T2>::value 2062 > 2063struct __libcpp_compressed_pair_switch; 2064 2065template <class _T1, class _T2, bool IsSame> 2066struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, false> {enum {value = 0};}; 2067 2068template <class _T1, class _T2, bool IsSame> 2069struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, true, false> {enum {value = 1};}; 2070 2071template <class _T1, class _T2, bool IsSame> 2072struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, true> {enum {value = 2};}; 2073 2074template <class _T1, class _T2> 2075struct __libcpp_compressed_pair_switch<_T1, _T2, false, true, true> {enum {value = 3};}; 2076 2077template <class _T1, class _T2> 2078struct __libcpp_compressed_pair_switch<_T1, _T2, true, true, true> {enum {value = 1};}; 2079 2080template <class _T1, class _T2, unsigned = __libcpp_compressed_pair_switch<_T1, _T2>::value> 2081class __libcpp_compressed_pair_imp; 2082 2083template <class _T1, class _T2> 2084class __libcpp_compressed_pair_imp<_T1, _T2, 0> 2085{ 2086private: 2087 _T1 __first_; 2088 _T2 __second_; 2089public: 2090 typedef _T1 _T1_param; 2091 typedef _T2 _T2_param; 2092 2093 typedef typename remove_reference<_T1>::type& _T1_reference; 2094 typedef typename remove_reference<_T2>::type& _T2_reference; 2095 2096 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 2097 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 2098 2099 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __first_(), __second_() {} 2100 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2101 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_() {} 2102 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2103 : __first_(), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2104 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2105 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2106 2107#ifndef _LIBCPP_HAS_NO_VARIADICS 2108 2109 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2110 _LIBCPP_INLINE_VISIBILITY 2111 __libcpp_compressed_pair_imp(piecewise_construct_t, 2112 tuple<_Args1...> __first_args, 2113 tuple<_Args2...> __second_args, 2114 __tuple_indices<_I1...>, 2115 __tuple_indices<_I2...>) 2116 : __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2117 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2118 {} 2119 2120#endif // _LIBCPP_HAS_NO_VARIADICS 2121 2122 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2123 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2124 2125 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2126 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2127 2128 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2129 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2130 __is_nothrow_swappable<_T2>::value) 2131 { 2132 using _VSTD::swap; 2133 swap(__first_, __x.__first_); 2134 swap(__second_, __x.__second_); 2135 } 2136}; 2137 2138template <class _T1, class _T2> 2139class __libcpp_compressed_pair_imp<_T1, _T2, 1> 2140 : private _T1 2141{ 2142private: 2143 _T2 __second_; 2144public: 2145 typedef _T1 _T1_param; 2146 typedef _T2 _T2_param; 2147 2148 typedef _T1& _T1_reference; 2149 typedef typename remove_reference<_T2>::type& _T2_reference; 2150 2151 typedef const _T1& _T1_const_reference; 2152 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 2153 2154 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __second_() {} 2155 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2156 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_() {} 2157 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2158 : __second_(_VSTD::forward<_T2_param>(__t2)) {} 2159 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2160 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2161 2162#ifndef _LIBCPP_HAS_NO_VARIADICS 2163 2164 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2165 _LIBCPP_INLINE_VISIBILITY 2166 __libcpp_compressed_pair_imp(piecewise_construct_t, 2167 tuple<_Args1...> __first_args, 2168 tuple<_Args2...> __second_args, 2169 __tuple_indices<_I1...>, 2170 __tuple_indices<_I2...>) 2171 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2172 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2173 {} 2174 2175#endif // _LIBCPP_HAS_NO_VARIADICS 2176 2177 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2178 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2179 2180 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2181 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2182 2183 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2184 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2185 __is_nothrow_swappable<_T2>::value) 2186 { 2187 using _VSTD::swap; 2188 swap(__second_, __x.__second_); 2189 } 2190}; 2191 2192template <class _T1, class _T2> 2193class __libcpp_compressed_pair_imp<_T1, _T2, 2> 2194 : private _T2 2195{ 2196private: 2197 _T1 __first_; 2198public: 2199 typedef _T1 _T1_param; 2200 typedef _T2 _T2_param; 2201 2202 typedef typename remove_reference<_T1>::type& _T1_reference; 2203 typedef _T2& _T2_reference; 2204 2205 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 2206 typedef const _T2& _T2_const_reference; 2207 2208 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __first_() {} 2209 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2210 : __first_(_VSTD::forward<_T1_param>(__t1)) {} 2211 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2212 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_() {} 2213 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2214 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2215 is_nothrow_move_constructible<_T2>::value) 2216 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_(_VSTD::forward<_T1_param>(__t1)) {} 2217 2218#ifndef _LIBCPP_HAS_NO_VARIADICS 2219 2220 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2221 _LIBCPP_INLINE_VISIBILITY 2222 __libcpp_compressed_pair_imp(piecewise_construct_t, 2223 tuple<_Args1...> __first_args, 2224 tuple<_Args2...> __second_args, 2225 __tuple_indices<_I1...>, 2226 __tuple_indices<_I2...>) 2227 : _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...), 2228 __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...) 2229 2230 {} 2231 2232#endif // _LIBCPP_HAS_NO_VARIADICS 2233 2234 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2235 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2236 2237 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2238 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2239 2240 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2241 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2242 __is_nothrow_swappable<_T2>::value) 2243 { 2244 using _VSTD::swap; 2245 swap(__first_, __x.__first_); 2246 } 2247}; 2248 2249template <class _T1, class _T2> 2250class __libcpp_compressed_pair_imp<_T1, _T2, 3> 2251 : private _T1, 2252 private _T2 2253{ 2254public: 2255 typedef _T1 _T1_param; 2256 typedef _T2 _T2_param; 2257 2258 typedef _T1& _T1_reference; 2259 typedef _T2& _T2_reference; 2260 2261 typedef const _T1& _T1_const_reference; 2262 typedef const _T2& _T2_const_reference; 2263 2264 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2265 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2266 : _T1(_VSTD::forward<_T1_param>(__t1)) {} 2267 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2268 : _T2(_VSTD::forward<_T2_param>(__t2)) {} 2269 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2270 : _T1(_VSTD::forward<_T1_param>(__t1)), _T2(_VSTD::forward<_T2_param>(__t2)) {} 2271 2272#ifndef _LIBCPP_HAS_NO_VARIADICS 2273 2274 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2275 _LIBCPP_INLINE_VISIBILITY 2276 __libcpp_compressed_pair_imp(piecewise_construct_t, 2277 tuple<_Args1...> __first_args, 2278 tuple<_Args2...> __second_args, 2279 __tuple_indices<_I1...>, 2280 __tuple_indices<_I2...>) 2281 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2282 _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2283 {} 2284 2285#endif // _LIBCPP_HAS_NO_VARIADICS 2286 2287 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2288 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2289 2290 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2291 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2292 2293 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp&) 2294 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2295 __is_nothrow_swappable<_T2>::value) 2296 { 2297 } 2298}; 2299 2300template <class _T1, class _T2> 2301class __compressed_pair 2302 : private __libcpp_compressed_pair_imp<_T1, _T2> 2303{ 2304 typedef __libcpp_compressed_pair_imp<_T1, _T2> base; 2305public: 2306 typedef typename base::_T1_param _T1_param; 2307 typedef typename base::_T2_param _T2_param; 2308 2309 typedef typename base::_T1_reference _T1_reference; 2310 typedef typename base::_T2_reference _T2_reference; 2311 2312 typedef typename base::_T1_const_reference _T1_const_reference; 2313 typedef typename base::_T2_const_reference _T2_const_reference; 2314 2315 _LIBCPP_INLINE_VISIBILITY __compressed_pair() {} 2316 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T1_param __t1) 2317 : base(_VSTD::forward<_T1_param>(__t1)) {} 2318 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T2_param __t2) 2319 : base(_VSTD::forward<_T2_param>(__t2)) {} 2320 _LIBCPP_INLINE_VISIBILITY __compressed_pair(_T1_param __t1, _T2_param __t2) 2321 : base(_VSTD::forward<_T1_param>(__t1), _VSTD::forward<_T2_param>(__t2)) {} 2322 2323#ifndef _LIBCPP_HAS_NO_VARIADICS 2324 2325 template <class... _Args1, class... _Args2> 2326 _LIBCPP_INLINE_VISIBILITY 2327 __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args, 2328 tuple<_Args2...> __second_args) 2329 : base(__pc, _VSTD::move(__first_args), _VSTD::move(__second_args), 2330 typename __make_tuple_indices<sizeof...(_Args1)>::type(), 2331 typename __make_tuple_indices<sizeof...(_Args2) >::type()) 2332 {} 2333 2334#endif // _LIBCPP_HAS_NO_VARIADICS 2335 2336 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return base::first();} 2337 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return base::first();} 2338 2339 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return base::second();} 2340 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return base::second();} 2341 2342 _LIBCPP_INLINE_VISIBILITY void swap(__compressed_pair& __x) 2343 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2344 __is_nothrow_swappable<_T2>::value) 2345 {base::swap(__x);} 2346}; 2347 2348template <class _T1, class _T2> 2349inline _LIBCPP_INLINE_VISIBILITY 2350void 2351swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y) 2352 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2353 __is_nothrow_swappable<_T2>::value) 2354 {__x.swap(__y);} 2355 2356// __same_or_less_cv_qualified 2357 2358template <class _Ptr1, class _Ptr2, 2359 bool = is_same<typename remove_cv<typename pointer_traits<_Ptr1>::element_type>::type, 2360 typename remove_cv<typename pointer_traits<_Ptr2>::element_type>::type 2361 >::value 2362 > 2363struct __same_or_less_cv_qualified_imp 2364 : is_convertible<_Ptr1, _Ptr2> {}; 2365 2366template <class _Ptr1, class _Ptr2> 2367struct __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2, false> 2368 : false_type {}; 2369 2370template <class _Ptr1, class _Ptr2, bool = is_pointer<_Ptr1>::value || 2371 is_same<_Ptr1, _Ptr2>::value || 2372 __has_element_type<_Ptr1>::value> 2373struct __same_or_less_cv_qualified 2374 : __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2> {}; 2375 2376template <class _Ptr1, class _Ptr2> 2377struct __same_or_less_cv_qualified<_Ptr1, _Ptr2, false> 2378 : false_type {}; 2379 2380// default_delete 2381 2382template <class _Tp> 2383struct _LIBCPP_TEMPLATE_VIS default_delete 2384{ 2385#ifndef _LIBCPP_CXX03_LANG 2386 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2387#else 2388 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2389#endif 2390 template <class _Up> 2391 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up>&, 2392 typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2393 _LIBCPP_INLINE_VISIBILITY void operator() (_Tp* __ptr) const _NOEXCEPT 2394 { 2395 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2396 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type"); 2397 delete __ptr; 2398 } 2399}; 2400 2401template <class _Tp> 2402struct _LIBCPP_TEMPLATE_VIS default_delete<_Tp[]> 2403{ 2404public: 2405#ifndef _LIBCPP_CXX03_LANG 2406 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2407#else 2408 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2409#endif 2410 template <class _Up> 2411 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up[]>&, 2412 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2413 template <class _Up> 2414 _LIBCPP_INLINE_VISIBILITY 2415 void operator() (_Up* __ptr, 2416 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) const _NOEXCEPT 2417 { 2418 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2419 static_assert(!is_void<_Tp>::value, "default_delete can not delete void type"); 2420 delete [] __ptr; 2421 } 2422}; 2423 2424template <class _Tp, class _Dp = default_delete<_Tp> > 2425class _LIBCPP_TEMPLATE_VIS unique_ptr 2426{ 2427public: 2428 typedef _Tp element_type; 2429 typedef _Dp deleter_type; 2430 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2431private: 2432 __compressed_pair<pointer, deleter_type> __ptr_; 2433 2434#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2435 unique_ptr(unique_ptr&); 2436 template <class _Up, class _Ep> 2437 unique_ptr(unique_ptr<_Up, _Ep>&); 2438 unique_ptr& operator=(unique_ptr&); 2439 template <class _Up, class _Ep> 2440 unique_ptr& operator=(unique_ptr<_Up, _Ep>&); 2441#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2442 2443 struct __nat {int __for_bool_;}; 2444 2445 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2446 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2447public: 2448 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2449 : __ptr_(pointer()) 2450 { 2451 static_assert(!is_pointer<deleter_type>::value, 2452 "unique_ptr constructed with null function pointer deleter"); 2453 } 2454 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2455 : __ptr_(pointer()) 2456 { 2457 static_assert(!is_pointer<deleter_type>::value, 2458 "unique_ptr constructed with null function pointer deleter"); 2459 } 2460 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) _NOEXCEPT 2461 : __ptr_(_VSTD::move(__p)) 2462 { 2463 static_assert(!is_pointer<deleter_type>::value, 2464 "unique_ptr constructed with null function pointer deleter"); 2465 } 2466 2467#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2468 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename conditional< 2469 is_reference<deleter_type>::value, 2470 deleter_type, 2471 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2472 _NOEXCEPT 2473 : __ptr_(__p, __d) {} 2474 2475 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename remove_reference<deleter_type>::type&& __d) 2476 _NOEXCEPT 2477 : __ptr_(__p, _VSTD::move(__d)) 2478 { 2479 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2480 } 2481 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2482 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2483 template <class _Up, class _Ep> 2484 _LIBCPP_INLINE_VISIBILITY 2485 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2486 typename enable_if 2487 < 2488 !is_array<_Up>::value && 2489 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2490 is_convertible<_Ep, deleter_type>::value && 2491 ( 2492 !is_reference<deleter_type>::value || 2493 is_same<deleter_type, _Ep>::value 2494 ), 2495 __nat 2496 >::type = __nat()) _NOEXCEPT 2497 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {} 2498 2499 template <class _Up> 2500 _LIBCPP_INLINE_VISIBILITY unique_ptr(auto_ptr<_Up>&& __p, 2501 typename enable_if< 2502 is_convertible<_Up*, _Tp*>::value && 2503 is_same<_Dp, default_delete<_Tp> >::value, 2504 __nat 2505 >::type = __nat()) _NOEXCEPT 2506 : __ptr_(__p.release()) 2507 { 2508 } 2509 2510 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2511 { 2512 reset(__u.release()); 2513 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2514 return *this; 2515 } 2516 2517 template <class _Up, class _Ep> 2518 _LIBCPP_INLINE_VISIBILITY 2519 typename enable_if 2520 < 2521 !is_array<_Up>::value && 2522 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2523 is_assignable<deleter_type&, _Ep&&>::value, 2524 unique_ptr& 2525 >::type 2526 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2527 { 2528 reset(__u.release()); 2529 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2530 return *this; 2531 } 2532#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2533 2534 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2535 { 2536 return __rv<unique_ptr>(*this); 2537 } 2538 2539 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2540 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2541 2542 template <class _Up, class _Ep> 2543 _LIBCPP_INLINE_VISIBILITY 2544 typename enable_if< 2545 !is_array<_Up>::value && 2546 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2547 is_assignable<deleter_type&, _Ep&>::value, 2548 unique_ptr& 2549 >::type 2550 operator=(unique_ptr<_Up, _Ep> __u) 2551 { 2552 reset(__u.release()); 2553 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2554 return *this; 2555 } 2556 2557 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2558 : __ptr_(_VSTD::move(__p), _VSTD::move(__d)) {} 2559 2560 template <class _Up> 2561 _LIBCPP_INLINE_VISIBILITY 2562 typename enable_if< 2563 is_convertible<_Up*, _Tp*>::value && 2564 is_same<_Dp, default_delete<_Tp> >::value, 2565 unique_ptr& 2566 >::type 2567 operator=(auto_ptr<_Up> __p) 2568 {reset(__p.release()); return *this;} 2569 2570#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2571 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2572 2573 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2574 { 2575 reset(); 2576 return *this; 2577 } 2578 2579 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator*() const 2580 {return *__ptr_.first();} 2581 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT {return __ptr_.first();} 2582 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2583 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2584 {return __ptr_.second();} 2585 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2586 {return __ptr_.second();} 2587 _LIBCPP_INLINE_VISIBILITY 2588 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2589 {return __ptr_.first() != nullptr;} 2590 2591 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2592 { 2593 pointer __t = __ptr_.first(); 2594 __ptr_.first() = pointer(); 2595 return __t; 2596 } 2597 2598 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) _NOEXCEPT 2599 { 2600 pointer __tmp = __ptr_.first(); 2601 __ptr_.first() = __p; 2602 if (__tmp) 2603 __ptr_.second()(__tmp); 2604 } 2605 2606 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) _NOEXCEPT 2607 {__ptr_.swap(__u.__ptr_);} 2608}; 2609 2610template <class _Tp, class _Dp> 2611class _LIBCPP_TEMPLATE_VIS unique_ptr<_Tp[], _Dp> 2612{ 2613public: 2614 typedef _Tp element_type; 2615 typedef _Dp deleter_type; 2616 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2617private: 2618 __compressed_pair<pointer, deleter_type> __ptr_; 2619 2620#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2621 unique_ptr(unique_ptr&); 2622 template <class _Up> 2623 unique_ptr(unique_ptr<_Up>&); 2624 unique_ptr& operator=(unique_ptr&); 2625 template <class _Up> 2626 unique_ptr& operator=(unique_ptr<_Up>&); 2627#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2628 2629 struct __nat {int __for_bool_;}; 2630 2631 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2632 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2633public: 2634 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2635 : __ptr_(pointer()) 2636 { 2637 static_assert(!is_pointer<deleter_type>::value, 2638 "unique_ptr constructed with null function pointer deleter"); 2639 } 2640 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2641 : __ptr_(pointer()) 2642 { 2643 static_assert(!is_pointer<deleter_type>::value, 2644 "unique_ptr constructed with null function pointer deleter"); 2645 } 2646#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2647 template <class _Pp> 2648 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(_Pp __p, 2649 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) _NOEXCEPT 2650 : __ptr_(__p) 2651 { 2652 static_assert(!is_pointer<deleter_type>::value, 2653 "unique_ptr constructed with null function pointer deleter"); 2654 } 2655 2656 template <class _Pp> 2657 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, typename conditional< 2658 is_reference<deleter_type>::value, 2659 deleter_type, 2660 typename add_lvalue_reference<const deleter_type>::type>::type __d, 2661 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2662 _NOEXCEPT 2663 : __ptr_(__p, __d) {} 2664 2665 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename conditional< 2666 is_reference<deleter_type>::value, 2667 deleter_type, 2668 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2669 _NOEXCEPT 2670 : __ptr_(pointer(), __d) {} 2671 2672 template <class _Pp> 2673 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, 2674 typename remove_reference<deleter_type>::type&& __d, 2675 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2676 _NOEXCEPT 2677 : __ptr_(__p, _VSTD::move(__d)) 2678 { 2679 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2680 } 2681 2682 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename remove_reference<deleter_type>::type&& __d) 2683 _NOEXCEPT 2684 : __ptr_(pointer(), _VSTD::move(__d)) 2685 { 2686 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2687 } 2688 2689 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2690 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2691 2692 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2693 { 2694 reset(__u.release()); 2695 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2696 return *this; 2697 } 2698 2699 template <class _Up, class _Ep> 2700 _LIBCPP_INLINE_VISIBILITY 2701 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2702 typename enable_if 2703 < 2704 is_array<_Up>::value && 2705 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value 2706 && is_convertible<_Ep, deleter_type>::value && 2707 ( 2708 !is_reference<deleter_type>::value || 2709 is_same<deleter_type, _Ep>::value 2710 ), 2711 __nat 2712 >::type = __nat() 2713 ) _NOEXCEPT 2714 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2715 2716 2717 template <class _Up, class _Ep> 2718 _LIBCPP_INLINE_VISIBILITY 2719 typename enable_if 2720 < 2721 is_array<_Up>::value && 2722 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2723 is_assignable<deleter_type&, _Ep&&>::value, 2724 unique_ptr& 2725 >::type 2726 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2727 { 2728 reset(__u.release()); 2729 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2730 return *this; 2731 } 2732#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2733 2734 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) 2735 : __ptr_(__p) 2736 { 2737 static_assert(!is_pointer<deleter_type>::value, 2738 "unique_ptr constructed with null function pointer deleter"); 2739 } 2740 2741 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2742 : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {} 2743 2744 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, deleter_type __d) 2745 : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {} 2746 2747 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2748 { 2749 return __rv<unique_ptr>(*this); 2750 } 2751 2752 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2753 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2754 2755 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(__rv<unique_ptr> __u) 2756 { 2757 reset(__u->release()); 2758 __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter()); 2759 return *this; 2760 } 2761 2762#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2763 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2764 2765 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2766 { 2767 reset(); 2768 return *this; 2769 } 2770 2771 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator[](size_t __i) const 2772 {return __ptr_.first()[__i];} 2773 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2774 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2775 {return __ptr_.second();} 2776 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2777 {return __ptr_.second();} 2778 _LIBCPP_INLINE_VISIBILITY 2779 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2780 {return __ptr_.first() != nullptr;} 2781 2782 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2783 { 2784 pointer __t = __ptr_.first(); 2785 __ptr_.first() = pointer(); 2786 return __t; 2787 } 2788 2789 template <class _Pp> 2790 _LIBCPP_INLINE_VISIBILITY 2791 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, void>::type 2792 reset(_Pp __p) _NOEXCEPT 2793 { 2794 pointer __tmp = __ptr_.first(); 2795 __ptr_.first() = __p; 2796 if (__tmp) 2797 __ptr_.second()(__tmp); 2798 } 2799 _LIBCPP_INLINE_VISIBILITY void reset(nullptr_t = nullptr) _NOEXCEPT 2800 { 2801 pointer __tmp = __ptr_.first(); 2802 __ptr_.first() = nullptr; 2803 if (__tmp) 2804 __ptr_.second()(__tmp); 2805 } 2806 2807 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);} 2808private: 2809 2810#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2811 template <class _Up> 2812 explicit unique_ptr(_Up); 2813 template <class _Up> 2814 unique_ptr(_Up __u, 2815 typename conditional< 2816 is_reference<deleter_type>::value, 2817 deleter_type, 2818 typename add_lvalue_reference<const deleter_type>::type>::type, 2819 typename enable_if 2820 < 2821 is_convertible<_Up, pointer>::value, 2822 __nat 2823 >::type = __nat()); 2824#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2825}; 2826 2827template <class _Tp, class _Dp> 2828inline _LIBCPP_INLINE_VISIBILITY 2829typename enable_if< 2830 __is_swappable<_Dp>::value, 2831 void 2832>::type 2833swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} 2834 2835template <class _T1, class _D1, class _T2, class _D2> 2836inline _LIBCPP_INLINE_VISIBILITY 2837bool 2838operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} 2839 2840template <class _T1, class _D1, class _T2, class _D2> 2841inline _LIBCPP_INLINE_VISIBILITY 2842bool 2843operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} 2844 2845template <class _T1, class _D1, class _T2, class _D2> 2846inline _LIBCPP_INLINE_VISIBILITY 2847bool 2848operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) 2849{ 2850 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2851 typedef typename unique_ptr<_T2, _D2>::pointer _P2; 2852 typedef typename common_type<_P1, _P2>::type _Vp; 2853 return less<_Vp>()(__x.get(), __y.get()); 2854} 2855 2856template <class _T1, class _D1, class _T2, class _D2> 2857inline _LIBCPP_INLINE_VISIBILITY 2858bool 2859operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} 2860 2861template <class _T1, class _D1, class _T2, class _D2> 2862inline _LIBCPP_INLINE_VISIBILITY 2863bool 2864operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} 2865 2866template <class _T1, class _D1, class _T2, class _D2> 2867inline _LIBCPP_INLINE_VISIBILITY 2868bool 2869operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} 2870 2871template <class _T1, class _D1> 2872inline _LIBCPP_INLINE_VISIBILITY 2873bool 2874operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2875{ 2876 return !__x; 2877} 2878 2879template <class _T1, class _D1> 2880inline _LIBCPP_INLINE_VISIBILITY 2881bool 2882operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2883{ 2884 return !__x; 2885} 2886 2887template <class _T1, class _D1> 2888inline _LIBCPP_INLINE_VISIBILITY 2889bool 2890operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2891{ 2892 return static_cast<bool>(__x); 2893} 2894 2895template <class _T1, class _D1> 2896inline _LIBCPP_INLINE_VISIBILITY 2897bool 2898operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2899{ 2900 return static_cast<bool>(__x); 2901} 2902 2903template <class _T1, class _D1> 2904inline _LIBCPP_INLINE_VISIBILITY 2905bool 2906operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2907{ 2908 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2909 return less<_P1>()(__x.get(), nullptr); 2910} 2911 2912template <class _T1, class _D1> 2913inline _LIBCPP_INLINE_VISIBILITY 2914bool 2915operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2916{ 2917 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2918 return less<_P1>()(nullptr, __x.get()); 2919} 2920 2921template <class _T1, class _D1> 2922inline _LIBCPP_INLINE_VISIBILITY 2923bool 2924operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2925{ 2926 return nullptr < __x; 2927} 2928 2929template <class _T1, class _D1> 2930inline _LIBCPP_INLINE_VISIBILITY 2931bool 2932operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2933{ 2934 return __x < nullptr; 2935} 2936 2937template <class _T1, class _D1> 2938inline _LIBCPP_INLINE_VISIBILITY 2939bool 2940operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2941{ 2942 return !(nullptr < __x); 2943} 2944 2945template <class _T1, class _D1> 2946inline _LIBCPP_INLINE_VISIBILITY 2947bool 2948operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2949{ 2950 return !(__x < nullptr); 2951} 2952 2953template <class _T1, class _D1> 2954inline _LIBCPP_INLINE_VISIBILITY 2955bool 2956operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2957{ 2958 return !(__x < nullptr); 2959} 2960 2961template <class _T1, class _D1> 2962inline _LIBCPP_INLINE_VISIBILITY 2963bool 2964operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2965{ 2966 return !(nullptr < __x); 2967} 2968 2969#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2970 2971template <class _Tp, class _Dp> 2972inline _LIBCPP_INLINE_VISIBILITY 2973unique_ptr<_Tp, _Dp> 2974move(unique_ptr<_Tp, _Dp>& __t) 2975{ 2976 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t)); 2977} 2978 2979#endif 2980 2981#if _LIBCPP_STD_VER > 11 2982 2983template<class _Tp> 2984struct __unique_if 2985{ 2986 typedef unique_ptr<_Tp> __unique_single; 2987}; 2988 2989template<class _Tp> 2990struct __unique_if<_Tp[]> 2991{ 2992 typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; 2993}; 2994 2995template<class _Tp, size_t _Np> 2996struct __unique_if<_Tp[_Np]> 2997{ 2998 typedef void __unique_array_known_bound; 2999}; 3000 3001template<class _Tp, class... _Args> 3002inline _LIBCPP_INLINE_VISIBILITY 3003typename __unique_if<_Tp>::__unique_single 3004make_unique(_Args&&... __args) 3005{ 3006 return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...)); 3007} 3008 3009template<class _Tp> 3010inline _LIBCPP_INLINE_VISIBILITY 3011typename __unique_if<_Tp>::__unique_array_unknown_bound 3012make_unique(size_t __n) 3013{ 3014 typedef typename remove_extent<_Tp>::type _Up; 3015 return unique_ptr<_Tp>(new _Up[__n]()); 3016} 3017 3018template<class _Tp, class... _Args> 3019 typename __unique_if<_Tp>::__unique_array_known_bound 3020 make_unique(_Args&&...) = delete; 3021 3022#endif // _LIBCPP_STD_VER > 11 3023 3024template <class _Tp, class _Dp> 3025#ifdef _LIBCPP_CXX03_LANG 3026struct _LIBCPP_TEMPLATE_VIS hash<unique_ptr<_Tp, _Dp> > 3027#else 3028struct _LIBCPP_TEMPLATE_VIS hash<__enable_hash_helper< 3029 unique_ptr<_Tp, _Dp>, typename unique_ptr<_Tp, _Dp>::pointer>> 3030#endif 3031{ 3032 typedef unique_ptr<_Tp, _Dp> argument_type; 3033 typedef size_t result_type; 3034 _LIBCPP_INLINE_VISIBILITY 3035 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 3036 { 3037 typedef typename argument_type::pointer pointer; 3038 return hash<pointer>()(__ptr.get()); 3039 } 3040}; 3041 3042struct __destruct_n 3043{ 3044private: 3045 size_t size; 3046 3047 template <class _Tp> 3048 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT 3049 {for (size_t __i = 0; __i < size; ++__i, ++__p) __p->~_Tp();} 3050 3051 template <class _Tp> 3052 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT 3053 {} 3054 3055 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT 3056 {++size;} 3057 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT 3058 {} 3059 3060 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT 3061 {size = __s;} 3062 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT 3063 {} 3064public: 3065 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT 3066 : size(__s) {} 3067 3068 template <class _Tp> 3069 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT 3070 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3071 3072 template <class _Tp> 3073 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT 3074 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3075 3076 template <class _Tp> 3077 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT 3078 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3079}; 3080 3081template <class _Alloc> 3082class __allocator_destructor 3083{ 3084 typedef allocator_traits<_Alloc> __alloc_traits; 3085public: 3086 typedef typename __alloc_traits::pointer pointer; 3087 typedef typename __alloc_traits::size_type size_type; 3088private: 3089 _Alloc& __alloc_; 3090 size_type __s_; 3091public: 3092 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) 3093 _NOEXCEPT 3094 : __alloc_(__a), __s_(__s) {} 3095 _LIBCPP_INLINE_VISIBILITY 3096 void operator()(pointer __p) _NOEXCEPT 3097 {__alloc_traits::deallocate(__alloc_, __p, __s_);} 3098}; 3099 3100template <class _InputIterator, class _ForwardIterator> 3101_ForwardIterator 3102uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) 3103{ 3104 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3105#ifndef _LIBCPP_NO_EXCEPTIONS 3106 _ForwardIterator __s = __r; 3107 try 3108 { 3109#endif 3110 for (; __f != __l; ++__f, (void) ++__r) 3111 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3112#ifndef _LIBCPP_NO_EXCEPTIONS 3113 } 3114 catch (...) 3115 { 3116 for (; __s != __r; ++__s) 3117 __s->~value_type(); 3118 throw; 3119 } 3120#endif 3121 return __r; 3122} 3123 3124template <class _InputIterator, class _Size, class _ForwardIterator> 3125_ForwardIterator 3126uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) 3127{ 3128 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3129#ifndef _LIBCPP_NO_EXCEPTIONS 3130 _ForwardIterator __s = __r; 3131 try 3132 { 3133#endif 3134 for (; __n > 0; ++__f, (void) ++__r, (void) --__n) 3135 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3136#ifndef _LIBCPP_NO_EXCEPTIONS 3137 } 3138 catch (...) 3139 { 3140 for (; __s != __r; ++__s) 3141 __s->~value_type(); 3142 throw; 3143 } 3144#endif 3145 return __r; 3146} 3147 3148template <class _ForwardIterator, class _Tp> 3149void 3150uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) 3151{ 3152 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3153#ifndef _LIBCPP_NO_EXCEPTIONS 3154 _ForwardIterator __s = __f; 3155 try 3156 { 3157#endif 3158 for (; __f != __l; ++__f) 3159 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3160#ifndef _LIBCPP_NO_EXCEPTIONS 3161 } 3162 catch (...) 3163 { 3164 for (; __s != __f; ++__s) 3165 __s->~value_type(); 3166 throw; 3167 } 3168#endif 3169} 3170 3171template <class _ForwardIterator, class _Size, class _Tp> 3172_ForwardIterator 3173uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) 3174{ 3175 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3176#ifndef _LIBCPP_NO_EXCEPTIONS 3177 _ForwardIterator __s = __f; 3178 try 3179 { 3180#endif 3181 for (; __n > 0; ++__f, (void) --__n) 3182 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3183#ifndef _LIBCPP_NO_EXCEPTIONS 3184 } 3185 catch (...) 3186 { 3187 for (; __s != __f; ++__s) 3188 __s->~value_type(); 3189 throw; 3190 } 3191#endif 3192 return __f; 3193} 3194 3195#if _LIBCPP_STD_VER > 14 3196 3197template <class _Tp> 3198inline _LIBCPP_INLINE_VISIBILITY 3199void destroy_at(_Tp* __loc) { 3200 _LIBCPP_ASSERT(__loc, "null pointer given to destroy_at"); 3201 __loc->~_Tp(); 3202} 3203 3204template <class _ForwardIterator> 3205inline _LIBCPP_INLINE_VISIBILITY 3206void destroy(_ForwardIterator __first, _ForwardIterator __last) { 3207 for (; __first != __last; ++__first) 3208 _VSTD::destroy_at(_VSTD::addressof(*__first)); 3209} 3210 3211template <class _ForwardIterator, class _Size> 3212inline _LIBCPP_INLINE_VISIBILITY 3213_ForwardIterator destroy_n(_ForwardIterator __first, _Size __n) { 3214 for (; __n > 0; (void)++__first, --__n) 3215 _VSTD::destroy_at(_VSTD::addressof(*__first)); 3216 return __first; 3217} 3218 3219template <class _ForwardIterator> 3220inline _LIBCPP_INLINE_VISIBILITY 3221void uninitialized_default_construct(_ForwardIterator __first, _ForwardIterator __last) { 3222 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3223 auto __idx = __first; 3224#ifndef _LIBCPP_NO_EXCEPTIONS 3225 try { 3226#endif 3227 for (; __idx != __last; ++__idx) 3228 ::new((void*)_VSTD::addressof(*__idx)) _Vt; 3229#ifndef _LIBCPP_NO_EXCEPTIONS 3230 } catch (...) { 3231 _VSTD::destroy(__first, __idx); 3232 throw; 3233 } 3234#endif 3235} 3236 3237template <class _ForwardIterator, class _Size> 3238inline _LIBCPP_INLINE_VISIBILITY 3239_ForwardIterator uninitialized_default_construct_n(_ForwardIterator __first, _Size __n) { 3240 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3241 auto __idx = __first; 3242#ifndef _LIBCPP_NO_EXCEPTIONS 3243 try { 3244#endif 3245 for (; __n > 0; (void)++__idx, --__n) 3246 ::new((void*)_VSTD::addressof(*__idx)) _Vt; 3247 return __idx; 3248#ifndef _LIBCPP_NO_EXCEPTIONS 3249 } catch (...) { 3250 _VSTD::destroy(__first, __idx); 3251 throw; 3252 } 3253#endif 3254} 3255 3256 3257template <class _ForwardIterator> 3258inline _LIBCPP_INLINE_VISIBILITY 3259void uninitialized_value_construct(_ForwardIterator __first, _ForwardIterator __last) { 3260 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3261 auto __idx = __first; 3262#ifndef _LIBCPP_NO_EXCEPTIONS 3263 try { 3264#endif 3265 for (; __idx != __last; ++__idx) 3266 ::new((void*)_VSTD::addressof(*__idx)) _Vt(); 3267#ifndef _LIBCPP_NO_EXCEPTIONS 3268 } catch (...) { 3269 _VSTD::destroy(__first, __idx); 3270 throw; 3271 } 3272#endif 3273} 3274 3275template <class _ForwardIterator, class _Size> 3276inline _LIBCPP_INLINE_VISIBILITY 3277_ForwardIterator uninitialized_value_construct_n(_ForwardIterator __first, _Size __n) { 3278 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3279 auto __idx = __first; 3280#ifndef _LIBCPP_NO_EXCEPTIONS 3281 try { 3282#endif 3283 for (; __n > 0; (void)++__idx, --__n) 3284 ::new((void*)_VSTD::addressof(*__idx)) _Vt(); 3285 return __idx; 3286#ifndef _LIBCPP_NO_EXCEPTIONS 3287 } catch (...) { 3288 _VSTD::destroy(__first, __idx); 3289 throw; 3290 } 3291#endif 3292} 3293 3294 3295template <class _InputIt, class _ForwardIt> 3296inline _LIBCPP_INLINE_VISIBILITY 3297_ForwardIt uninitialized_move(_InputIt __first, _InputIt __last, _ForwardIt __first_res) { 3298 using _Vt = typename iterator_traits<_ForwardIt>::value_type; 3299 auto __idx = __first_res; 3300#ifndef _LIBCPP_NO_EXCEPTIONS 3301 try { 3302#endif 3303 for (; __first != __last; (void)++__idx, ++__first) 3304 ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first)); 3305 return __idx; 3306#ifndef _LIBCPP_NO_EXCEPTIONS 3307 } catch (...) { 3308 _VSTD::destroy(__first_res, __idx); 3309 throw; 3310 } 3311#endif 3312} 3313 3314template <class _InputIt, class _Size, class _ForwardIt> 3315inline _LIBCPP_INLINE_VISIBILITY 3316pair<_InputIt, _ForwardIt> 3317uninitialized_move_n(_InputIt __first, _Size __n, _ForwardIt __first_res) { 3318 using _Vt = typename iterator_traits<_ForwardIt>::value_type; 3319 auto __idx = __first_res; 3320#ifndef _LIBCPP_NO_EXCEPTIONS 3321 try { 3322#endif 3323 for (; __n > 0; ++__idx, (void)++__first, --__n) 3324 ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first)); 3325 return {__first, __idx}; 3326#ifndef _LIBCPP_NO_EXCEPTIONS 3327 } catch (...) { 3328 _VSTD::destroy(__first_res, __idx); 3329 throw; 3330 } 3331#endif 3332} 3333 3334 3335#endif // _LIBCPP_STD_VER > 14 3336 3337// NOTE: Relaxed and acq/rel atomics (for increment and decrement respectively) 3338// should be sufficient for thread safety. 3339// See https://llvm.org/bugs/show_bug.cgi?id=22803 3340#if defined(__clang__) && __has_builtin(__atomic_add_fetch) \ 3341 && defined(__ATOMIC_RELAXED) \ 3342 && defined(__ATOMIC_ACQ_REL) 3343# define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT 3344#elif !defined(__clang__) && defined(_GNUC_VER) && _GNUC_VER >= 407 3345# define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT 3346#endif 3347 3348template <class _Tp> 3349inline _LIBCPP_INLINE_VISIBILITY _Tp 3350__libcpp_atomic_refcount_increment(_Tp& __t) _NOEXCEPT 3351{ 3352#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS) 3353 return __atomic_add_fetch(&__t, 1, __ATOMIC_RELAXED); 3354#else 3355 return __t += 1; 3356#endif 3357} 3358 3359template <class _Tp> 3360inline _LIBCPP_INLINE_VISIBILITY _Tp 3361__libcpp_atomic_refcount_decrement(_Tp& __t) _NOEXCEPT 3362{ 3363#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS) 3364 return __atomic_add_fetch(&__t, -1, __ATOMIC_ACQ_REL); 3365#else 3366 return __t -= 1; 3367#endif 3368} 3369 3370class _LIBCPP_EXCEPTION_ABI bad_weak_ptr 3371 : public std::exception 3372{ 3373public: 3374 virtual ~bad_weak_ptr() _NOEXCEPT; 3375 virtual const char* what() const _NOEXCEPT; 3376}; 3377 3378_LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINE 3379void __throw_bad_weak_ptr() 3380{ 3381#ifndef _LIBCPP_NO_EXCEPTIONS 3382 throw bad_weak_ptr(); 3383#else 3384 _VSTD::abort(); 3385#endif 3386} 3387 3388template<class _Tp> class _LIBCPP_TEMPLATE_VIS weak_ptr; 3389 3390class _LIBCPP_TYPE_VIS __shared_count 3391{ 3392 __shared_count(const __shared_count&); 3393 __shared_count& operator=(const __shared_count&); 3394 3395protected: 3396 long __shared_owners_; 3397 virtual ~__shared_count(); 3398private: 3399 virtual void __on_zero_shared() _NOEXCEPT = 0; 3400 3401public: 3402 _LIBCPP_INLINE_VISIBILITY 3403 explicit __shared_count(long __refs = 0) _NOEXCEPT 3404 : __shared_owners_(__refs) {} 3405 3406#if defined(_LIBCPP_BUILDING_MEMORY) && \ 3407 defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS) 3408 void __add_shared() _NOEXCEPT; 3409 bool __release_shared() _NOEXCEPT; 3410#else 3411 _LIBCPP_INLINE_VISIBILITY 3412 void __add_shared() _NOEXCEPT { 3413 __libcpp_atomic_refcount_increment(__shared_owners_); 3414 } 3415 _LIBCPP_INLINE_VISIBILITY 3416 bool __release_shared() _NOEXCEPT { 3417 if (__libcpp_atomic_refcount_decrement(__shared_owners_) == -1) { 3418 __on_zero_shared(); 3419 return true; 3420 } 3421 return false; 3422 } 3423#endif 3424 _LIBCPP_INLINE_VISIBILITY 3425 long use_count() const _NOEXCEPT { 3426 return __libcpp_relaxed_load(&__shared_owners_) + 1; 3427 } 3428}; 3429 3430class _LIBCPP_TYPE_VIS __shared_weak_count 3431 : private __shared_count 3432{ 3433 long __shared_weak_owners_; 3434 3435public: 3436 _LIBCPP_INLINE_VISIBILITY 3437 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT 3438 : __shared_count(__refs), 3439 __shared_weak_owners_(__refs) {} 3440protected: 3441 virtual ~__shared_weak_count(); 3442 3443public: 3444#if defined(_LIBCPP_BUILDING_MEMORY) && \ 3445 defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS) 3446 void __add_shared() _NOEXCEPT; 3447 void __add_weak() _NOEXCEPT; 3448 void __release_shared() _NOEXCEPT; 3449#else 3450 _LIBCPP_INLINE_VISIBILITY 3451 void __add_shared() _NOEXCEPT { 3452 __shared_count::__add_shared(); 3453 } 3454 _LIBCPP_INLINE_VISIBILITY 3455 void __add_weak() _NOEXCEPT { 3456 __libcpp_atomic_refcount_increment(__shared_weak_owners_); 3457 } 3458 _LIBCPP_INLINE_VISIBILITY 3459 void __release_shared() _NOEXCEPT { 3460 if (__shared_count::__release_shared()) 3461 __release_weak(); 3462 } 3463#endif 3464 void __release_weak() _NOEXCEPT; 3465 _LIBCPP_INLINE_VISIBILITY 3466 long use_count() const _NOEXCEPT {return __shared_count::use_count();} 3467 __shared_weak_count* lock() _NOEXCEPT; 3468 3469 // Define the function out only if we build static libc++ without RTTI. 3470 // Otherwise we may break clients who need to compile their projects with 3471 // -fno-rtti and yet link against a libc++.dylib compiled 3472 // without -fno-rtti. 3473#if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC) 3474 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3475#endif 3476private: 3477 virtual void __on_zero_shared_weak() _NOEXCEPT = 0; 3478}; 3479 3480template <class _Tp, class _Dp, class _Alloc> 3481class __shared_ptr_pointer 3482 : public __shared_weak_count 3483{ 3484 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; 3485public: 3486 _LIBCPP_INLINE_VISIBILITY 3487 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) 3488 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {} 3489 3490#ifndef _LIBCPP_NO_RTTI 3491 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3492#endif 3493 3494private: 3495 virtual void __on_zero_shared() _NOEXCEPT; 3496 virtual void __on_zero_shared_weak() _NOEXCEPT; 3497}; 3498 3499#ifndef _LIBCPP_NO_RTTI 3500 3501template <class _Tp, class _Dp, class _Alloc> 3502const void* 3503__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT 3504{ 3505 return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : 0; 3506} 3507 3508#endif // _LIBCPP_NO_RTTI 3509 3510template <class _Tp, class _Dp, class _Alloc> 3511void 3512__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT 3513{ 3514 __data_.first().second()(__data_.first().first()); 3515 __data_.first().second().~_Dp(); 3516} 3517 3518template <class _Tp, class _Dp, class _Alloc> 3519void 3520__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3521{ 3522 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al; 3523 typedef allocator_traits<_Al> _ATraits; 3524 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3525 3526 _Al __a(__data_.second()); 3527 __data_.second().~_Alloc(); 3528 __a.deallocate(_PTraits::pointer_to(*this), 1); 3529} 3530 3531template <class _Tp, class _Alloc> 3532class __shared_ptr_emplace 3533 : public __shared_weak_count 3534{ 3535 __compressed_pair<_Alloc, _Tp> __data_; 3536public: 3537#ifndef _LIBCPP_HAS_NO_VARIADICS 3538 3539 _LIBCPP_INLINE_VISIBILITY 3540 __shared_ptr_emplace(_Alloc __a) 3541 : __data_(_VSTD::move(__a)) {} 3542 3543 template <class ..._Args> 3544 _LIBCPP_INLINE_VISIBILITY 3545 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) 3546 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a), 3547 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {} 3548 3549#else // _LIBCPP_HAS_NO_VARIADICS 3550 3551 _LIBCPP_INLINE_VISIBILITY 3552 __shared_ptr_emplace(_Alloc __a) 3553 : __data_(__a) {} 3554 3555 template <class _A0> 3556 _LIBCPP_INLINE_VISIBILITY 3557 __shared_ptr_emplace(_Alloc __a, _A0& __a0) 3558 : __data_(__a, _Tp(__a0)) {} 3559 3560 template <class _A0, class _A1> 3561 _LIBCPP_INLINE_VISIBILITY 3562 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) 3563 : __data_(__a, _Tp(__a0, __a1)) {} 3564 3565 template <class _A0, class _A1, class _A2> 3566 _LIBCPP_INLINE_VISIBILITY 3567 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) 3568 : __data_(__a, _Tp(__a0, __a1, __a2)) {} 3569 3570#endif // _LIBCPP_HAS_NO_VARIADICS 3571 3572private: 3573 virtual void __on_zero_shared() _NOEXCEPT; 3574 virtual void __on_zero_shared_weak() _NOEXCEPT; 3575public: 3576 _LIBCPP_INLINE_VISIBILITY 3577 _Tp* get() _NOEXCEPT {return &__data_.second();} 3578}; 3579 3580template <class _Tp, class _Alloc> 3581void 3582__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT 3583{ 3584 __data_.second().~_Tp(); 3585} 3586 3587template <class _Tp, class _Alloc> 3588void 3589__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3590{ 3591 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type _Al; 3592 typedef allocator_traits<_Al> _ATraits; 3593 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3594 _Al __a(__data_.first()); 3595 __data_.first().~_Alloc(); 3596 __a.deallocate(_PTraits::pointer_to(*this), 1); 3597} 3598 3599template<class _Tp> class _LIBCPP_TEMPLATE_VIS enable_shared_from_this; 3600 3601template<class _Tp> 3602class _LIBCPP_TEMPLATE_VIS shared_ptr 3603{ 3604public: 3605 typedef _Tp element_type; 3606 3607#if _LIBCPP_STD_VER > 14 3608 typedef weak_ptr<_Tp> weak_type; 3609#endif 3610private: 3611 element_type* __ptr_; 3612 __shared_weak_count* __cntrl_; 3613 3614 struct __nat {int __for_bool_;}; 3615public: 3616 _LIBCPP_INLINE_VISIBILITY 3617 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT; 3618 _LIBCPP_INLINE_VISIBILITY 3619 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT; 3620 template<class _Yp> 3621 explicit shared_ptr(_Yp* __p, 3622 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3623 template<class _Yp, class _Dp> 3624 shared_ptr(_Yp* __p, _Dp __d, 3625 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3626 template<class _Yp, class _Dp, class _Alloc> 3627 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 3628 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3629 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); 3630 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); 3631 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT; 3632 _LIBCPP_INLINE_VISIBILITY 3633 shared_ptr(const shared_ptr& __r) _NOEXCEPT; 3634 template<class _Yp> 3635 _LIBCPP_INLINE_VISIBILITY 3636 shared_ptr(const shared_ptr<_Yp>& __r, 3637 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()) 3638 _NOEXCEPT; 3639#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3640 _LIBCPP_INLINE_VISIBILITY 3641 shared_ptr(shared_ptr&& __r) _NOEXCEPT; 3642 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(shared_ptr<_Yp>&& __r, 3643 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()) 3644 _NOEXCEPT; 3645#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3646 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, 3647 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type= __nat()); 3648#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3649 template<class _Yp> 3650 shared_ptr(auto_ptr<_Yp>&& __r, 3651 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3652#else 3653 template<class _Yp> 3654 shared_ptr(auto_ptr<_Yp> __r, 3655 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3656#endif 3657#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3658 template <class _Yp, class _Dp> 3659 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3660 typename enable_if 3661 < 3662 !is_lvalue_reference<_Dp>::value && 3663 !is_array<_Yp>::value && 3664 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3665 __nat 3666 >::type = __nat()); 3667 template <class _Yp, class _Dp> 3668 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3669 typename enable_if 3670 < 3671 is_lvalue_reference<_Dp>::value && 3672 !is_array<_Yp>::value && 3673 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3674 __nat 3675 >::type = __nat()); 3676#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3677 template <class _Yp, class _Dp> 3678 shared_ptr(unique_ptr<_Yp, _Dp>, 3679 typename enable_if 3680 < 3681 !is_lvalue_reference<_Dp>::value && 3682 !is_array<_Yp>::value && 3683 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3684 __nat 3685 >::type = __nat()); 3686 template <class _Yp, class _Dp> 3687 shared_ptr(unique_ptr<_Yp, _Dp>, 3688 typename enable_if 3689 < 3690 is_lvalue_reference<_Dp>::value && 3691 !is_array<_Yp>::value && 3692 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3693 __nat 3694 >::type = __nat()); 3695#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3696 3697 ~shared_ptr(); 3698 3699 _LIBCPP_INLINE_VISIBILITY 3700 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT; 3701 template<class _Yp> 3702 typename enable_if 3703 < 3704 is_convertible<_Yp*, element_type*>::value, 3705 shared_ptr& 3706 >::type 3707 _LIBCPP_INLINE_VISIBILITY 3708 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT; 3709#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3710 _LIBCPP_INLINE_VISIBILITY 3711 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT; 3712 template<class _Yp> 3713 typename enable_if 3714 < 3715 is_convertible<_Yp*, element_type*>::value, 3716 shared_ptr<_Tp>& 3717 >::type 3718 _LIBCPP_INLINE_VISIBILITY 3719 operator=(shared_ptr<_Yp>&& __r); 3720 template<class _Yp> 3721 _LIBCPP_INLINE_VISIBILITY 3722 typename enable_if 3723 < 3724 !is_array<_Yp>::value && 3725 is_convertible<_Yp*, element_type*>::value, 3726 shared_ptr 3727 >::type& 3728 operator=(auto_ptr<_Yp>&& __r); 3729#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3730 template<class _Yp> 3731 _LIBCPP_INLINE_VISIBILITY 3732 typename enable_if 3733 < 3734 !is_array<_Yp>::value && 3735 is_convertible<_Yp*, element_type*>::value, 3736 shared_ptr& 3737 >::type 3738 operator=(auto_ptr<_Yp> __r); 3739#endif 3740 template <class _Yp, class _Dp> 3741 typename enable_if 3742 < 3743 !is_array<_Yp>::value && 3744 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3745 shared_ptr& 3746 >::type 3747#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3748 _LIBCPP_INLINE_VISIBILITY 3749 operator=(unique_ptr<_Yp, _Dp>&& __r); 3750#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3751 _LIBCPP_INLINE_VISIBILITY 3752 operator=(unique_ptr<_Yp, _Dp> __r); 3753#endif 3754 3755 _LIBCPP_INLINE_VISIBILITY 3756 void swap(shared_ptr& __r) _NOEXCEPT; 3757 _LIBCPP_INLINE_VISIBILITY 3758 void reset() _NOEXCEPT; 3759 template<class _Yp> 3760 typename enable_if 3761 < 3762 is_convertible<_Yp*, element_type*>::value, 3763 void 3764 >::type 3765 _LIBCPP_INLINE_VISIBILITY 3766 reset(_Yp* __p); 3767 template<class _Yp, class _Dp> 3768 typename enable_if 3769 < 3770 is_convertible<_Yp*, element_type*>::value, 3771 void 3772 >::type 3773 _LIBCPP_INLINE_VISIBILITY 3774 reset(_Yp* __p, _Dp __d); 3775 template<class _Yp, class _Dp, class _Alloc> 3776 typename enable_if 3777 < 3778 is_convertible<_Yp*, element_type*>::value, 3779 void 3780 >::type 3781 _LIBCPP_INLINE_VISIBILITY 3782 reset(_Yp* __p, _Dp __d, _Alloc __a); 3783 3784 _LIBCPP_INLINE_VISIBILITY 3785 element_type* get() const _NOEXCEPT {return __ptr_;} 3786 _LIBCPP_INLINE_VISIBILITY 3787 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT 3788 {return *__ptr_;} 3789 _LIBCPP_INLINE_VISIBILITY 3790 element_type* operator->() const _NOEXCEPT {return __ptr_;} 3791 _LIBCPP_INLINE_VISIBILITY 3792 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;} 3793 _LIBCPP_INLINE_VISIBILITY 3794 bool unique() const _NOEXCEPT {return use_count() == 1;} 3795 _LIBCPP_INLINE_VISIBILITY 3796 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;} 3797 template <class _Up> 3798 _LIBCPP_INLINE_VISIBILITY 3799 bool owner_before(shared_ptr<_Up> const& __p) const 3800 {return __cntrl_ < __p.__cntrl_;} 3801 template <class _Up> 3802 _LIBCPP_INLINE_VISIBILITY 3803 bool owner_before(weak_ptr<_Up> const& __p) const 3804 {return __cntrl_ < __p.__cntrl_;} 3805 _LIBCPP_INLINE_VISIBILITY 3806 bool 3807 __owner_equivalent(const shared_ptr& __p) const 3808 {return __cntrl_ == __p.__cntrl_;} 3809 3810#ifndef _LIBCPP_NO_RTTI 3811 template <class _Dp> 3812 _LIBCPP_INLINE_VISIBILITY 3813 _Dp* __get_deleter() const _NOEXCEPT 3814 {return (_Dp*)(__cntrl_ ? __cntrl_->__get_deleter(typeid(_Dp)) : 0);} 3815#endif // _LIBCPP_NO_RTTI 3816 3817#ifndef _LIBCPP_HAS_NO_VARIADICS 3818 3819 template<class ..._Args> 3820 static 3821 shared_ptr<_Tp> 3822 make_shared(_Args&& ...__args); 3823 3824 template<class _Alloc, class ..._Args> 3825 static 3826 shared_ptr<_Tp> 3827 allocate_shared(const _Alloc& __a, _Args&& ...__args); 3828 3829#else // _LIBCPP_HAS_NO_VARIADICS 3830 3831 static shared_ptr<_Tp> make_shared(); 3832 3833 template<class _A0> 3834 static shared_ptr<_Tp> make_shared(_A0&); 3835 3836 template<class _A0, class _A1> 3837 static shared_ptr<_Tp> make_shared(_A0&, _A1&); 3838 3839 template<class _A0, class _A1, class _A2> 3840 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); 3841 3842 template<class _Alloc> 3843 static shared_ptr<_Tp> 3844 allocate_shared(const _Alloc& __a); 3845 3846 template<class _Alloc, class _A0> 3847 static shared_ptr<_Tp> 3848 allocate_shared(const _Alloc& __a, _A0& __a0); 3849 3850 template<class _Alloc, class _A0, class _A1> 3851 static shared_ptr<_Tp> 3852 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); 3853 3854 template<class _Alloc, class _A0, class _A1, class _A2> 3855 static shared_ptr<_Tp> 3856 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); 3857 3858#endif // _LIBCPP_HAS_NO_VARIADICS 3859 3860private: 3861 3862 template <class _Yp, class _OrigPtr> 3863 _LIBCPP_INLINE_VISIBILITY 3864 void 3865 __enable_weak_this(const enable_shared_from_this<_Yp>* __e, 3866 _OrigPtr* __ptr) _NOEXCEPT 3867 { 3868 typedef typename remove_cv<_Yp>::type _RawYp; 3869 if (__e && __e->__weak_this_.expired()) 3870 { 3871 __e->__weak_this_ = shared_ptr<_RawYp>(*this, 3872 const_cast<_RawYp*>(static_cast<const _Yp*>(__ptr))); 3873 } 3874 } 3875 3876 _LIBCPP_INLINE_VISIBILITY 3877 void __enable_weak_this(const volatile void*, const volatile void*) _NOEXCEPT {} 3878 3879 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr; 3880 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr; 3881}; 3882 3883template<class _Tp> 3884inline 3885_LIBCPP_CONSTEXPR 3886shared_ptr<_Tp>::shared_ptr() _NOEXCEPT 3887 : __ptr_(0), 3888 __cntrl_(0) 3889{ 3890} 3891 3892template<class _Tp> 3893inline 3894_LIBCPP_CONSTEXPR 3895shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT 3896 : __ptr_(0), 3897 __cntrl_(0) 3898{ 3899} 3900 3901template<class _Tp> 3902template<class _Yp> 3903shared_ptr<_Tp>::shared_ptr(_Yp* __p, 3904 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 3905 : __ptr_(__p) 3906{ 3907 unique_ptr<_Yp> __hold(__p); 3908 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 3909 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), allocator<_Yp>()); 3910 __hold.release(); 3911 __enable_weak_this(__p, __p); 3912} 3913 3914template<class _Tp> 3915template<class _Yp, class _Dp> 3916shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, 3917 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 3918 : __ptr_(__p) 3919{ 3920#ifndef _LIBCPP_NO_EXCEPTIONS 3921 try 3922 { 3923#endif // _LIBCPP_NO_EXCEPTIONS 3924 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 3925 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Yp>()); 3926 __enable_weak_this(__p, __p); 3927#ifndef _LIBCPP_NO_EXCEPTIONS 3928 } 3929 catch (...) 3930 { 3931 __d(__p); 3932 throw; 3933 } 3934#endif // _LIBCPP_NO_EXCEPTIONS 3935} 3936 3937template<class _Tp> 3938template<class _Dp> 3939shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) 3940 : __ptr_(0) 3941{ 3942#ifndef _LIBCPP_NO_EXCEPTIONS 3943 try 3944 { 3945#endif // _LIBCPP_NO_EXCEPTIONS 3946 typedef __shared_ptr_pointer<nullptr_t, _Dp, allocator<_Tp> > _CntrlBlk; 3947 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Tp>()); 3948#ifndef _LIBCPP_NO_EXCEPTIONS 3949 } 3950 catch (...) 3951 { 3952 __d(__p); 3953 throw; 3954 } 3955#endif // _LIBCPP_NO_EXCEPTIONS 3956} 3957 3958template<class _Tp> 3959template<class _Yp, class _Dp, class _Alloc> 3960shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 3961 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 3962 : __ptr_(__p) 3963{ 3964#ifndef _LIBCPP_NO_EXCEPTIONS 3965 try 3966 { 3967#endif // _LIBCPP_NO_EXCEPTIONS 3968 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; 3969 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 3970 typedef __allocator_destructor<_A2> _D2; 3971 _A2 __a2(__a); 3972 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 3973 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 3974 _CntrlBlk(__p, __d, __a); 3975 __cntrl_ = _VSTD::addressof(*__hold2.release()); 3976 __enable_weak_this(__p, __p); 3977#ifndef _LIBCPP_NO_EXCEPTIONS 3978 } 3979 catch (...) 3980 { 3981 __d(__p); 3982 throw; 3983 } 3984#endif // _LIBCPP_NO_EXCEPTIONS 3985} 3986 3987template<class _Tp> 3988template<class _Dp, class _Alloc> 3989shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) 3990 : __ptr_(0) 3991{ 3992#ifndef _LIBCPP_NO_EXCEPTIONS 3993 try 3994 { 3995#endif // _LIBCPP_NO_EXCEPTIONS 3996 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; 3997 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 3998 typedef __allocator_destructor<_A2> _D2; 3999 _A2 __a2(__a); 4000 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4001 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4002 _CntrlBlk(__p, __d, __a); 4003 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4004#ifndef _LIBCPP_NO_EXCEPTIONS 4005 } 4006 catch (...) 4007 { 4008 __d(__p); 4009 throw; 4010 } 4011#endif // _LIBCPP_NO_EXCEPTIONS 4012} 4013 4014template<class _Tp> 4015template<class _Yp> 4016inline 4017shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT 4018 : __ptr_(__p), 4019 __cntrl_(__r.__cntrl_) 4020{ 4021 if (__cntrl_) 4022 __cntrl_->__add_shared(); 4023} 4024 4025template<class _Tp> 4026inline 4027shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT 4028 : __ptr_(__r.__ptr_), 4029 __cntrl_(__r.__cntrl_) 4030{ 4031 if (__cntrl_) 4032 __cntrl_->__add_shared(); 4033} 4034 4035template<class _Tp> 4036template<class _Yp> 4037inline 4038shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, 4039 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4040 _NOEXCEPT 4041 : __ptr_(__r.__ptr_), 4042 __cntrl_(__r.__cntrl_) 4043{ 4044 if (__cntrl_) 4045 __cntrl_->__add_shared(); 4046} 4047 4048#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4049 4050template<class _Tp> 4051inline 4052shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT 4053 : __ptr_(__r.__ptr_), 4054 __cntrl_(__r.__cntrl_) 4055{ 4056 __r.__ptr_ = 0; 4057 __r.__cntrl_ = 0; 4058} 4059 4060template<class _Tp> 4061template<class _Yp> 4062inline 4063shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, 4064 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4065 _NOEXCEPT 4066 : __ptr_(__r.__ptr_), 4067 __cntrl_(__r.__cntrl_) 4068{ 4069 __r.__ptr_ = 0; 4070 __r.__cntrl_ = 0; 4071} 4072 4073#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4074 4075template<class _Tp> 4076template<class _Yp> 4077#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4078shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r, 4079#else 4080shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r, 4081#endif 4082 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4083 : __ptr_(__r.get()) 4084{ 4085 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4086 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); 4087 __enable_weak_this(__r.get(), __r.get()); 4088 __r.release(); 4089} 4090 4091template<class _Tp> 4092template <class _Yp, class _Dp> 4093#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4094shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4095#else 4096shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4097#endif 4098 typename enable_if 4099 < 4100 !is_lvalue_reference<_Dp>::value && 4101 !is_array<_Yp>::value && 4102 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4103 __nat 4104 >::type) 4105 : __ptr_(__r.get()) 4106{ 4107#if _LIBCPP_STD_VER > 11 4108 if (__ptr_ == nullptr) 4109 __cntrl_ = nullptr; 4110 else 4111#endif 4112 { 4113 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4114 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), allocator<_Yp>()); 4115 __enable_weak_this(__r.get(), __r.get()); 4116 } 4117 __r.release(); 4118} 4119 4120template<class _Tp> 4121template <class _Yp, class _Dp> 4122#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4123shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4124#else 4125shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4126#endif 4127 typename enable_if 4128 < 4129 is_lvalue_reference<_Dp>::value && 4130 !is_array<_Yp>::value && 4131 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4132 __nat 4133 >::type) 4134 : __ptr_(__r.get()) 4135{ 4136#if _LIBCPP_STD_VER > 11 4137 if (__ptr_ == nullptr) 4138 __cntrl_ = nullptr; 4139 else 4140#endif 4141 { 4142 typedef __shared_ptr_pointer<_Yp*, 4143 reference_wrapper<typename remove_reference<_Dp>::type>, 4144 allocator<_Yp> > _CntrlBlk; 4145 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), allocator<_Yp>()); 4146 __enable_weak_this(__r.get(), __r.get()); 4147 } 4148 __r.release(); 4149} 4150 4151#ifndef _LIBCPP_HAS_NO_VARIADICS 4152 4153template<class _Tp> 4154template<class ..._Args> 4155shared_ptr<_Tp> 4156shared_ptr<_Tp>::make_shared(_Args&& ...__args) 4157{ 4158 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4159 typedef allocator<_CntrlBlk> _A2; 4160 typedef __allocator_destructor<_A2> _D2; 4161 _A2 __a2; 4162 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4163 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...); 4164 shared_ptr<_Tp> __r; 4165 __r.__ptr_ = __hold2.get()->get(); 4166 __r.__cntrl_ = __hold2.release(); 4167 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4168 return __r; 4169} 4170 4171template<class _Tp> 4172template<class _Alloc, class ..._Args> 4173shared_ptr<_Tp> 4174shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) 4175{ 4176 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4177 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4178 typedef __allocator_destructor<_A2> _D2; 4179 _A2 __a2(__a); 4180 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4181 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4182 _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...); 4183 shared_ptr<_Tp> __r; 4184 __r.__ptr_ = __hold2.get()->get(); 4185 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4186 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4187 return __r; 4188} 4189 4190#else // _LIBCPP_HAS_NO_VARIADICS 4191 4192template<class _Tp> 4193shared_ptr<_Tp> 4194shared_ptr<_Tp>::make_shared() 4195{ 4196 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4197 typedef allocator<_CntrlBlk> _Alloc2; 4198 typedef __allocator_destructor<_Alloc2> _D2; 4199 _Alloc2 __alloc2; 4200 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4201 ::new(__hold2.get()) _CntrlBlk(__alloc2); 4202 shared_ptr<_Tp> __r; 4203 __r.__ptr_ = __hold2.get()->get(); 4204 __r.__cntrl_ = __hold2.release(); 4205 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4206 return __r; 4207} 4208 4209template<class _Tp> 4210template<class _A0> 4211shared_ptr<_Tp> 4212shared_ptr<_Tp>::make_shared(_A0& __a0) 4213{ 4214 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4215 typedef allocator<_CntrlBlk> _Alloc2; 4216 typedef __allocator_destructor<_Alloc2> _D2; 4217 _Alloc2 __alloc2; 4218 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4219 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); 4220 shared_ptr<_Tp> __r; 4221 __r.__ptr_ = __hold2.get()->get(); 4222 __r.__cntrl_ = __hold2.release(); 4223 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4224 return __r; 4225} 4226 4227template<class _Tp> 4228template<class _A0, class _A1> 4229shared_ptr<_Tp> 4230shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) 4231{ 4232 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4233 typedef allocator<_CntrlBlk> _Alloc2; 4234 typedef __allocator_destructor<_Alloc2> _D2; 4235 _Alloc2 __alloc2; 4236 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4237 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); 4238 shared_ptr<_Tp> __r; 4239 __r.__ptr_ = __hold2.get()->get(); 4240 __r.__cntrl_ = __hold2.release(); 4241 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4242 return __r; 4243} 4244 4245template<class _Tp> 4246template<class _A0, class _A1, class _A2> 4247shared_ptr<_Tp> 4248shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4249{ 4250 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4251 typedef allocator<_CntrlBlk> _Alloc2; 4252 typedef __allocator_destructor<_Alloc2> _D2; 4253 _Alloc2 __alloc2; 4254 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4255 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); 4256 shared_ptr<_Tp> __r; 4257 __r.__ptr_ = __hold2.get()->get(); 4258 __r.__cntrl_ = __hold2.release(); 4259 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4260 return __r; 4261} 4262 4263template<class _Tp> 4264template<class _Alloc> 4265shared_ptr<_Tp> 4266shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) 4267{ 4268 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4269 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4270 typedef __allocator_destructor<_Alloc2> _D2; 4271 _Alloc2 __alloc2(__a); 4272 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4273 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4274 _CntrlBlk(__a); 4275 shared_ptr<_Tp> __r; 4276 __r.__ptr_ = __hold2.get()->get(); 4277 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4278 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4279 return __r; 4280} 4281 4282template<class _Tp> 4283template<class _Alloc, class _A0> 4284shared_ptr<_Tp> 4285shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) 4286{ 4287 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4288 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4289 typedef __allocator_destructor<_Alloc2> _D2; 4290 _Alloc2 __alloc2(__a); 4291 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4292 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4293 _CntrlBlk(__a, __a0); 4294 shared_ptr<_Tp> __r; 4295 __r.__ptr_ = __hold2.get()->get(); 4296 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4297 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4298 return __r; 4299} 4300 4301template<class _Tp> 4302template<class _Alloc, class _A0, class _A1> 4303shared_ptr<_Tp> 4304shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4305{ 4306 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4307 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4308 typedef __allocator_destructor<_Alloc2> _D2; 4309 _Alloc2 __alloc2(__a); 4310 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4311 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4312 _CntrlBlk(__a, __a0, __a1); 4313 shared_ptr<_Tp> __r; 4314 __r.__ptr_ = __hold2.get()->get(); 4315 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4316 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4317 return __r; 4318} 4319 4320template<class _Tp> 4321template<class _Alloc, class _A0, class _A1, class _A2> 4322shared_ptr<_Tp> 4323shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4324{ 4325 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4326 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4327 typedef __allocator_destructor<_Alloc2> _D2; 4328 _Alloc2 __alloc2(__a); 4329 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4330 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4331 _CntrlBlk(__a, __a0, __a1, __a2); 4332 shared_ptr<_Tp> __r; 4333 __r.__ptr_ = __hold2.get()->get(); 4334 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4335 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4336 return __r; 4337} 4338 4339#endif // _LIBCPP_HAS_NO_VARIADICS 4340 4341template<class _Tp> 4342shared_ptr<_Tp>::~shared_ptr() 4343{ 4344 if (__cntrl_) 4345 __cntrl_->__release_shared(); 4346} 4347 4348template<class _Tp> 4349inline 4350shared_ptr<_Tp>& 4351shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT 4352{ 4353 shared_ptr(__r).swap(*this); 4354 return *this; 4355} 4356 4357template<class _Tp> 4358template<class _Yp> 4359inline 4360typename enable_if 4361< 4362 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4363 shared_ptr<_Tp>& 4364>::type 4365shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT 4366{ 4367 shared_ptr(__r).swap(*this); 4368 return *this; 4369} 4370 4371#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4372 4373template<class _Tp> 4374inline 4375shared_ptr<_Tp>& 4376shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT 4377{ 4378 shared_ptr(_VSTD::move(__r)).swap(*this); 4379 return *this; 4380} 4381 4382template<class _Tp> 4383template<class _Yp> 4384inline 4385typename enable_if 4386< 4387 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4388 shared_ptr<_Tp>& 4389>::type 4390shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) 4391{ 4392 shared_ptr(_VSTD::move(__r)).swap(*this); 4393 return *this; 4394} 4395 4396template<class _Tp> 4397template<class _Yp> 4398inline 4399typename enable_if 4400< 4401 !is_array<_Yp>::value && 4402 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4403 shared_ptr<_Tp> 4404>::type& 4405shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) 4406{ 4407 shared_ptr(_VSTD::move(__r)).swap(*this); 4408 return *this; 4409} 4410 4411template<class _Tp> 4412template <class _Yp, class _Dp> 4413inline 4414typename enable_if 4415< 4416 !is_array<_Yp>::value && 4417 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, 4418 typename shared_ptr<_Tp>::element_type*>::value, 4419 shared_ptr<_Tp>& 4420>::type 4421shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) 4422{ 4423 shared_ptr(_VSTD::move(__r)).swap(*this); 4424 return *this; 4425} 4426 4427#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4428 4429template<class _Tp> 4430template<class _Yp> 4431inline _LIBCPP_INLINE_VISIBILITY 4432typename enable_if 4433< 4434 !is_array<_Yp>::value && 4435 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4436 shared_ptr<_Tp>& 4437>::type 4438shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) 4439{ 4440 shared_ptr(__r).swap(*this); 4441 return *this; 4442} 4443 4444template<class _Tp> 4445template <class _Yp, class _Dp> 4446inline _LIBCPP_INLINE_VISIBILITY 4447typename enable_if 4448< 4449 !is_array<_Yp>::value && 4450 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, 4451 typename shared_ptr<_Tp>::element_type*>::value, 4452 shared_ptr<_Tp>& 4453>::type 4454shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) 4455{ 4456 shared_ptr(_VSTD::move(__r)).swap(*this); 4457 return *this; 4458} 4459 4460#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4461 4462template<class _Tp> 4463inline 4464void 4465shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT 4466{ 4467 _VSTD::swap(__ptr_, __r.__ptr_); 4468 _VSTD::swap(__cntrl_, __r.__cntrl_); 4469} 4470 4471template<class _Tp> 4472inline 4473void 4474shared_ptr<_Tp>::reset() _NOEXCEPT 4475{ 4476 shared_ptr().swap(*this); 4477} 4478 4479template<class _Tp> 4480template<class _Yp> 4481inline 4482typename enable_if 4483< 4484 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4485 void 4486>::type 4487shared_ptr<_Tp>::reset(_Yp* __p) 4488{ 4489 shared_ptr(__p).swap(*this); 4490} 4491 4492template<class _Tp> 4493template<class _Yp, class _Dp> 4494inline 4495typename enable_if 4496< 4497 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4498 void 4499>::type 4500shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) 4501{ 4502 shared_ptr(__p, __d).swap(*this); 4503} 4504 4505template<class _Tp> 4506template<class _Yp, class _Dp, class _Alloc> 4507inline 4508typename enable_if 4509< 4510 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4511 void 4512>::type 4513shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) 4514{ 4515 shared_ptr(__p, __d, __a).swap(*this); 4516} 4517 4518#ifndef _LIBCPP_HAS_NO_VARIADICS 4519 4520template<class _Tp, class ..._Args> 4521inline _LIBCPP_INLINE_VISIBILITY 4522typename enable_if 4523< 4524 !is_array<_Tp>::value, 4525 shared_ptr<_Tp> 4526>::type 4527make_shared(_Args&& ...__args) 4528{ 4529 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...); 4530} 4531 4532template<class _Tp, class _Alloc, class ..._Args> 4533inline _LIBCPP_INLINE_VISIBILITY 4534typename enable_if 4535< 4536 !is_array<_Tp>::value, 4537 shared_ptr<_Tp> 4538>::type 4539allocate_shared(const _Alloc& __a, _Args&& ...__args) 4540{ 4541 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...); 4542} 4543 4544#else // _LIBCPP_HAS_NO_VARIADICS 4545 4546template<class _Tp> 4547inline _LIBCPP_INLINE_VISIBILITY 4548shared_ptr<_Tp> 4549make_shared() 4550{ 4551 return shared_ptr<_Tp>::make_shared(); 4552} 4553 4554template<class _Tp, class _A0> 4555inline _LIBCPP_INLINE_VISIBILITY 4556shared_ptr<_Tp> 4557make_shared(_A0& __a0) 4558{ 4559 return shared_ptr<_Tp>::make_shared(__a0); 4560} 4561 4562template<class _Tp, class _A0, class _A1> 4563inline _LIBCPP_INLINE_VISIBILITY 4564shared_ptr<_Tp> 4565make_shared(_A0& __a0, _A1& __a1) 4566{ 4567 return shared_ptr<_Tp>::make_shared(__a0, __a1); 4568} 4569 4570template<class _Tp, class _A0, class _A1, class _A2> 4571inline _LIBCPP_INLINE_VISIBILITY 4572shared_ptr<_Tp> 4573make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4574{ 4575 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); 4576} 4577 4578template<class _Tp, class _Alloc> 4579inline _LIBCPP_INLINE_VISIBILITY 4580shared_ptr<_Tp> 4581allocate_shared(const _Alloc& __a) 4582{ 4583 return shared_ptr<_Tp>::allocate_shared(__a); 4584} 4585 4586template<class _Tp, class _Alloc, class _A0> 4587inline _LIBCPP_INLINE_VISIBILITY 4588shared_ptr<_Tp> 4589allocate_shared(const _Alloc& __a, _A0& __a0) 4590{ 4591 return shared_ptr<_Tp>::allocate_shared(__a, __a0); 4592} 4593 4594template<class _Tp, class _Alloc, class _A0, class _A1> 4595inline _LIBCPP_INLINE_VISIBILITY 4596shared_ptr<_Tp> 4597allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4598{ 4599 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); 4600} 4601 4602template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> 4603inline _LIBCPP_INLINE_VISIBILITY 4604shared_ptr<_Tp> 4605allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4606{ 4607 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); 4608} 4609 4610#endif // _LIBCPP_HAS_NO_VARIADICS 4611 4612template<class _Tp, class _Up> 4613inline _LIBCPP_INLINE_VISIBILITY 4614bool 4615operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4616{ 4617 return __x.get() == __y.get(); 4618} 4619 4620template<class _Tp, class _Up> 4621inline _LIBCPP_INLINE_VISIBILITY 4622bool 4623operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4624{ 4625 return !(__x == __y); 4626} 4627 4628template<class _Tp, class _Up> 4629inline _LIBCPP_INLINE_VISIBILITY 4630bool 4631operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4632{ 4633 typedef typename common_type<_Tp*, _Up*>::type _Vp; 4634 return less<_Vp>()(__x.get(), __y.get()); 4635} 4636 4637template<class _Tp, class _Up> 4638inline _LIBCPP_INLINE_VISIBILITY 4639bool 4640operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4641{ 4642 return __y < __x; 4643} 4644 4645template<class _Tp, class _Up> 4646inline _LIBCPP_INLINE_VISIBILITY 4647bool 4648operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4649{ 4650 return !(__y < __x); 4651} 4652 4653template<class _Tp, class _Up> 4654inline _LIBCPP_INLINE_VISIBILITY 4655bool 4656operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4657{ 4658 return !(__x < __y); 4659} 4660 4661template<class _Tp> 4662inline _LIBCPP_INLINE_VISIBILITY 4663bool 4664operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4665{ 4666 return !__x; 4667} 4668 4669template<class _Tp> 4670inline _LIBCPP_INLINE_VISIBILITY 4671bool 4672operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4673{ 4674 return !__x; 4675} 4676 4677template<class _Tp> 4678inline _LIBCPP_INLINE_VISIBILITY 4679bool 4680operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4681{ 4682 return static_cast<bool>(__x); 4683} 4684 4685template<class _Tp> 4686inline _LIBCPP_INLINE_VISIBILITY 4687bool 4688operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4689{ 4690 return static_cast<bool>(__x); 4691} 4692 4693template<class _Tp> 4694inline _LIBCPP_INLINE_VISIBILITY 4695bool 4696operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4697{ 4698 return less<_Tp*>()(__x.get(), nullptr); 4699} 4700 4701template<class _Tp> 4702inline _LIBCPP_INLINE_VISIBILITY 4703bool 4704operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4705{ 4706 return less<_Tp*>()(nullptr, __x.get()); 4707} 4708 4709template<class _Tp> 4710inline _LIBCPP_INLINE_VISIBILITY 4711bool 4712operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4713{ 4714 return nullptr < __x; 4715} 4716 4717template<class _Tp> 4718inline _LIBCPP_INLINE_VISIBILITY 4719bool 4720operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4721{ 4722 return __x < nullptr; 4723} 4724 4725template<class _Tp> 4726inline _LIBCPP_INLINE_VISIBILITY 4727bool 4728operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4729{ 4730 return !(nullptr < __x); 4731} 4732 4733template<class _Tp> 4734inline _LIBCPP_INLINE_VISIBILITY 4735bool 4736operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4737{ 4738 return !(__x < nullptr); 4739} 4740 4741template<class _Tp> 4742inline _LIBCPP_INLINE_VISIBILITY 4743bool 4744operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4745{ 4746 return !(__x < nullptr); 4747} 4748 4749template<class _Tp> 4750inline _LIBCPP_INLINE_VISIBILITY 4751bool 4752operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4753{ 4754 return !(nullptr < __x); 4755} 4756 4757template<class _Tp> 4758inline _LIBCPP_INLINE_VISIBILITY 4759void 4760swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT 4761{ 4762 __x.swap(__y); 4763} 4764 4765template<class _Tp, class _Up> 4766inline _LIBCPP_INLINE_VISIBILITY 4767typename enable_if 4768< 4769 !is_array<_Tp>::value && !is_array<_Up>::value, 4770 shared_ptr<_Tp> 4771>::type 4772static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4773{ 4774 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); 4775} 4776 4777template<class _Tp, class _Up> 4778inline _LIBCPP_INLINE_VISIBILITY 4779typename enable_if 4780< 4781 !is_array<_Tp>::value && !is_array<_Up>::value, 4782 shared_ptr<_Tp> 4783>::type 4784dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4785{ 4786 _Tp* __p = dynamic_cast<_Tp*>(__r.get()); 4787 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); 4788} 4789 4790template<class _Tp, class _Up> 4791typename enable_if 4792< 4793 is_array<_Tp>::value == is_array<_Up>::value, 4794 shared_ptr<_Tp> 4795>::type 4796const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4797{ 4798 typedef typename remove_extent<_Tp>::type _RTp; 4799 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get())); 4800} 4801 4802#ifndef _LIBCPP_NO_RTTI 4803 4804template<class _Dp, class _Tp> 4805inline _LIBCPP_INLINE_VISIBILITY 4806_Dp* 4807get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT 4808{ 4809 return __p.template __get_deleter<_Dp>(); 4810} 4811 4812#endif // _LIBCPP_NO_RTTI 4813 4814template<class _Tp> 4815class _LIBCPP_TEMPLATE_VIS weak_ptr 4816{ 4817public: 4818 typedef _Tp element_type; 4819private: 4820 element_type* __ptr_; 4821 __shared_weak_count* __cntrl_; 4822 4823public: 4824 _LIBCPP_INLINE_VISIBILITY 4825 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT; 4826 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r, 4827 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4828 _NOEXCEPT; 4829 _LIBCPP_INLINE_VISIBILITY 4830 weak_ptr(weak_ptr const& __r) _NOEXCEPT; 4831 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r, 4832 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4833 _NOEXCEPT; 4834 4835#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4836 _LIBCPP_INLINE_VISIBILITY 4837 weak_ptr(weak_ptr&& __r) _NOEXCEPT; 4838 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r, 4839 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4840 _NOEXCEPT; 4841#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4842 ~weak_ptr(); 4843 4844 _LIBCPP_INLINE_VISIBILITY 4845 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT; 4846 template<class _Yp> 4847 typename enable_if 4848 < 4849 is_convertible<_Yp*, element_type*>::value, 4850 weak_ptr& 4851 >::type 4852 _LIBCPP_INLINE_VISIBILITY 4853 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT; 4854 4855#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4856 4857 _LIBCPP_INLINE_VISIBILITY 4858 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT; 4859 template<class _Yp> 4860 typename enable_if 4861 < 4862 is_convertible<_Yp*, element_type*>::value, 4863 weak_ptr& 4864 >::type 4865 _LIBCPP_INLINE_VISIBILITY 4866 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT; 4867 4868#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4869 4870 template<class _Yp> 4871 typename enable_if 4872 < 4873 is_convertible<_Yp*, element_type*>::value, 4874 weak_ptr& 4875 >::type 4876 _LIBCPP_INLINE_VISIBILITY 4877 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT; 4878 4879 _LIBCPP_INLINE_VISIBILITY 4880 void swap(weak_ptr& __r) _NOEXCEPT; 4881 _LIBCPP_INLINE_VISIBILITY 4882 void reset() _NOEXCEPT; 4883 4884 _LIBCPP_INLINE_VISIBILITY 4885 long use_count() const _NOEXCEPT 4886 {return __cntrl_ ? __cntrl_->use_count() : 0;} 4887 _LIBCPP_INLINE_VISIBILITY 4888 bool expired() const _NOEXCEPT 4889 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} 4890 shared_ptr<_Tp> lock() const _NOEXCEPT; 4891 template<class _Up> 4892 _LIBCPP_INLINE_VISIBILITY 4893 bool owner_before(const shared_ptr<_Up>& __r) const 4894 {return __cntrl_ < __r.__cntrl_;} 4895 template<class _Up> 4896 _LIBCPP_INLINE_VISIBILITY 4897 bool owner_before(const weak_ptr<_Up>& __r) const 4898 {return __cntrl_ < __r.__cntrl_;} 4899 4900 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr; 4901 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr; 4902}; 4903 4904template<class _Tp> 4905inline 4906_LIBCPP_CONSTEXPR 4907weak_ptr<_Tp>::weak_ptr() _NOEXCEPT 4908 : __ptr_(0), 4909 __cntrl_(0) 4910{ 4911} 4912 4913template<class _Tp> 4914inline 4915weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT 4916 : __ptr_(__r.__ptr_), 4917 __cntrl_(__r.__cntrl_) 4918{ 4919 if (__cntrl_) 4920 __cntrl_->__add_weak(); 4921} 4922 4923template<class _Tp> 4924template<class _Yp> 4925inline 4926weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, 4927 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 4928 _NOEXCEPT 4929 : __ptr_(__r.__ptr_), 4930 __cntrl_(__r.__cntrl_) 4931{ 4932 if (__cntrl_) 4933 __cntrl_->__add_weak(); 4934} 4935 4936template<class _Tp> 4937template<class _Yp> 4938inline 4939weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, 4940 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 4941 _NOEXCEPT 4942 : __ptr_(__r.__ptr_), 4943 __cntrl_(__r.__cntrl_) 4944{ 4945 if (__cntrl_) 4946 __cntrl_->__add_weak(); 4947} 4948 4949#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4950 4951template<class _Tp> 4952inline 4953weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT 4954 : __ptr_(__r.__ptr_), 4955 __cntrl_(__r.__cntrl_) 4956{ 4957 __r.__ptr_ = 0; 4958 __r.__cntrl_ = 0; 4959} 4960 4961template<class _Tp> 4962template<class _Yp> 4963inline 4964weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r, 4965 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 4966 _NOEXCEPT 4967 : __ptr_(__r.__ptr_), 4968 __cntrl_(__r.__cntrl_) 4969{ 4970 __r.__ptr_ = 0; 4971 __r.__cntrl_ = 0; 4972} 4973 4974#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4975 4976template<class _Tp> 4977weak_ptr<_Tp>::~weak_ptr() 4978{ 4979 if (__cntrl_) 4980 __cntrl_->__release_weak(); 4981} 4982 4983template<class _Tp> 4984inline 4985weak_ptr<_Tp>& 4986weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT 4987{ 4988 weak_ptr(__r).swap(*this); 4989 return *this; 4990} 4991 4992template<class _Tp> 4993template<class _Yp> 4994inline 4995typename enable_if 4996< 4997 is_convertible<_Yp*, _Tp*>::value, 4998 weak_ptr<_Tp>& 4999>::type 5000weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT 5001{ 5002 weak_ptr(__r).swap(*this); 5003 return *this; 5004} 5005 5006#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5007 5008template<class _Tp> 5009inline 5010weak_ptr<_Tp>& 5011weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT 5012{ 5013 weak_ptr(_VSTD::move(__r)).swap(*this); 5014 return *this; 5015} 5016 5017template<class _Tp> 5018template<class _Yp> 5019inline 5020typename enable_if 5021< 5022 is_convertible<_Yp*, _Tp*>::value, 5023 weak_ptr<_Tp>& 5024>::type 5025weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT 5026{ 5027 weak_ptr(_VSTD::move(__r)).swap(*this); 5028 return *this; 5029} 5030 5031#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5032 5033template<class _Tp> 5034template<class _Yp> 5035inline 5036typename enable_if 5037< 5038 is_convertible<_Yp*, _Tp*>::value, 5039 weak_ptr<_Tp>& 5040>::type 5041weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT 5042{ 5043 weak_ptr(__r).swap(*this); 5044 return *this; 5045} 5046 5047template<class _Tp> 5048inline 5049void 5050weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT 5051{ 5052 _VSTD::swap(__ptr_, __r.__ptr_); 5053 _VSTD::swap(__cntrl_, __r.__cntrl_); 5054} 5055 5056template<class _Tp> 5057inline _LIBCPP_INLINE_VISIBILITY 5058void 5059swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT 5060{ 5061 __x.swap(__y); 5062} 5063 5064template<class _Tp> 5065inline 5066void 5067weak_ptr<_Tp>::reset() _NOEXCEPT 5068{ 5069 weak_ptr().swap(*this); 5070} 5071 5072template<class _Tp> 5073template<class _Yp> 5074shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, 5075 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 5076 : __ptr_(__r.__ptr_), 5077 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) 5078{ 5079 if (__cntrl_ == 0) 5080 __throw_bad_weak_ptr(); 5081} 5082 5083template<class _Tp> 5084shared_ptr<_Tp> 5085weak_ptr<_Tp>::lock() const _NOEXCEPT 5086{ 5087 shared_ptr<_Tp> __r; 5088 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; 5089 if (__r.__cntrl_) 5090 __r.__ptr_ = __ptr_; 5091 return __r; 5092} 5093 5094#if _LIBCPP_STD_VER > 14 5095template <class _Tp = void> struct owner_less; 5096#else 5097template <class _Tp> struct owner_less; 5098#endif 5099 5100template <class _Tp> 5101struct _LIBCPP_TEMPLATE_VIS owner_less<shared_ptr<_Tp> > 5102 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> 5103{ 5104 typedef bool result_type; 5105 _LIBCPP_INLINE_VISIBILITY 5106 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5107 {return __x.owner_before(__y);} 5108 _LIBCPP_INLINE_VISIBILITY 5109 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5110 {return __x.owner_before(__y);} 5111 _LIBCPP_INLINE_VISIBILITY 5112 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5113 {return __x.owner_before(__y);} 5114}; 5115 5116template <class _Tp> 5117struct _LIBCPP_TEMPLATE_VIS owner_less<weak_ptr<_Tp> > 5118 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> 5119{ 5120 typedef bool result_type; 5121 _LIBCPP_INLINE_VISIBILITY 5122 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5123 {return __x.owner_before(__y);} 5124 _LIBCPP_INLINE_VISIBILITY 5125 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5126 {return __x.owner_before(__y);} 5127 _LIBCPP_INLINE_VISIBILITY 5128 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5129 {return __x.owner_before(__y);} 5130}; 5131 5132#if _LIBCPP_STD_VER > 14 5133template <> 5134struct _LIBCPP_TEMPLATE_VIS owner_less<void> 5135{ 5136 template <class _Tp, class _Up> 5137 _LIBCPP_INLINE_VISIBILITY 5138 bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const 5139 {return __x.owner_before(__y);} 5140 template <class _Tp, class _Up> 5141 _LIBCPP_INLINE_VISIBILITY 5142 bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const 5143 {return __x.owner_before(__y);} 5144 template <class _Tp, class _Up> 5145 _LIBCPP_INLINE_VISIBILITY 5146 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const 5147 {return __x.owner_before(__y);} 5148 template <class _Tp, class _Up> 5149 _LIBCPP_INLINE_VISIBILITY 5150 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const 5151 {return __x.owner_before(__y);} 5152 typedef void is_transparent; 5153}; 5154#endif 5155 5156template<class _Tp> 5157class _LIBCPP_TEMPLATE_VIS enable_shared_from_this 5158{ 5159 mutable weak_ptr<_Tp> __weak_this_; 5160protected: 5161 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 5162 enable_shared_from_this() _NOEXCEPT {} 5163 _LIBCPP_INLINE_VISIBILITY 5164 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {} 5165 _LIBCPP_INLINE_VISIBILITY 5166 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT 5167 {return *this;} 5168 _LIBCPP_INLINE_VISIBILITY 5169 ~enable_shared_from_this() {} 5170public: 5171 _LIBCPP_INLINE_VISIBILITY 5172 shared_ptr<_Tp> shared_from_this() 5173 {return shared_ptr<_Tp>(__weak_this_);} 5174 _LIBCPP_INLINE_VISIBILITY 5175 shared_ptr<_Tp const> shared_from_this() const 5176 {return shared_ptr<const _Tp>(__weak_this_);} 5177 5178#if _LIBCPP_STD_VER > 14 5179 _LIBCPP_INLINE_VISIBILITY 5180 weak_ptr<_Tp> weak_from_this() _NOEXCEPT 5181 { return __weak_this_; } 5182 5183 _LIBCPP_INLINE_VISIBILITY 5184 weak_ptr<const _Tp> weak_from_this() const _NOEXCEPT 5185 { return __weak_this_; } 5186#endif // _LIBCPP_STD_VER > 14 5187 5188 template <class _Up> friend class shared_ptr; 5189}; 5190 5191template <class _Tp> 5192struct _LIBCPP_TEMPLATE_VIS hash<shared_ptr<_Tp> > 5193{ 5194 typedef shared_ptr<_Tp> argument_type; 5195 typedef size_t result_type; 5196 5197 _LIBCPP_INLINE_VISIBILITY 5198 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 5199 { 5200 return hash<_Tp*>()(__ptr.get()); 5201 } 5202}; 5203 5204template<class _CharT, class _Traits, class _Yp> 5205inline _LIBCPP_INLINE_VISIBILITY 5206basic_ostream<_CharT, _Traits>& 5207operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p); 5208 5209 5210#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 5211 5212class _LIBCPP_TYPE_VIS __sp_mut 5213{ 5214 void* __lx; 5215public: 5216 void lock() _NOEXCEPT; 5217 void unlock() _NOEXCEPT; 5218 5219private: 5220 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT; 5221 __sp_mut(const __sp_mut&); 5222 __sp_mut& operator=(const __sp_mut&); 5223 5224 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5225}; 5226 5227_LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5228 5229template <class _Tp> 5230inline _LIBCPP_INLINE_VISIBILITY 5231bool 5232atomic_is_lock_free(const shared_ptr<_Tp>*) 5233{ 5234 return false; 5235} 5236 5237template <class _Tp> 5238shared_ptr<_Tp> 5239atomic_load(const shared_ptr<_Tp>* __p) 5240{ 5241 __sp_mut& __m = __get_sp_mut(__p); 5242 __m.lock(); 5243 shared_ptr<_Tp> __q = *__p; 5244 __m.unlock(); 5245 return __q; 5246} 5247 5248template <class _Tp> 5249inline _LIBCPP_INLINE_VISIBILITY 5250shared_ptr<_Tp> 5251atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) 5252{ 5253 return atomic_load(__p); 5254} 5255 5256template <class _Tp> 5257void 5258atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5259{ 5260 __sp_mut& __m = __get_sp_mut(__p); 5261 __m.lock(); 5262 __p->swap(__r); 5263 __m.unlock(); 5264} 5265 5266template <class _Tp> 5267inline _LIBCPP_INLINE_VISIBILITY 5268void 5269atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5270{ 5271 atomic_store(__p, __r); 5272} 5273 5274template <class _Tp> 5275shared_ptr<_Tp> 5276atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5277{ 5278 __sp_mut& __m = __get_sp_mut(__p); 5279 __m.lock(); 5280 __p->swap(__r); 5281 __m.unlock(); 5282 return __r; 5283} 5284 5285template <class _Tp> 5286inline _LIBCPP_INLINE_VISIBILITY 5287shared_ptr<_Tp> 5288atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5289{ 5290 return atomic_exchange(__p, __r); 5291} 5292 5293template <class _Tp> 5294bool 5295atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5296{ 5297 shared_ptr<_Tp> __temp; 5298 __sp_mut& __m = __get_sp_mut(__p); 5299 __m.lock(); 5300 if (__p->__owner_equivalent(*__v)) 5301 { 5302 _VSTD::swap(__temp, *__p); 5303 *__p = __w; 5304 __m.unlock(); 5305 return true; 5306 } 5307 _VSTD::swap(__temp, *__v); 5308 *__v = *__p; 5309 __m.unlock(); 5310 return false; 5311} 5312 5313template <class _Tp> 5314inline _LIBCPP_INLINE_VISIBILITY 5315bool 5316atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5317{ 5318 return atomic_compare_exchange_strong(__p, __v, __w); 5319} 5320 5321template <class _Tp> 5322inline _LIBCPP_INLINE_VISIBILITY 5323bool 5324atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5325 shared_ptr<_Tp> __w, memory_order, memory_order) 5326{ 5327 return atomic_compare_exchange_strong(__p, __v, __w); 5328} 5329 5330template <class _Tp> 5331inline _LIBCPP_INLINE_VISIBILITY 5332bool 5333atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5334 shared_ptr<_Tp> __w, memory_order, memory_order) 5335{ 5336 return atomic_compare_exchange_weak(__p, __v, __w); 5337} 5338 5339#endif // !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 5340 5341//enum class 5342#if defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) 5343# ifndef _LIBCPP_CXX03_LANG 5344enum class pointer_safety : unsigned char { 5345 relaxed, 5346 preferred, 5347 strict 5348}; 5349# endif 5350#else 5351struct _LIBCPP_TYPE_VIS pointer_safety 5352{ 5353 enum __lx 5354 { 5355 relaxed, 5356 preferred, 5357 strict 5358 }; 5359 5360 __lx __v_; 5361 5362 _LIBCPP_INLINE_VISIBILITY 5363 pointer_safety() : __v_() {} 5364 5365 _LIBCPP_INLINE_VISIBILITY 5366 pointer_safety(__lx __v) : __v_(__v) {} 5367 _LIBCPP_INLINE_VISIBILITY 5368 operator int() const {return __v_;} 5369}; 5370#endif 5371 5372#if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) && \ 5373 defined(_LIBCPP_BUILDING_MEMORY) 5374_LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT; 5375#else 5376// This function is only offered in C++03 under ABI v1. 5377# if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) || !defined(_LIBCPP_CXX03_LANG) 5378inline _LIBCPP_INLINE_VISIBILITY 5379pointer_safety get_pointer_safety() _NOEXCEPT { 5380 return pointer_safety::relaxed; 5381} 5382# endif 5383#endif 5384 5385 5386_LIBCPP_FUNC_VIS void declare_reachable(void* __p); 5387_LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n); 5388_LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n); 5389_LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p); 5390 5391template <class _Tp> 5392inline _LIBCPP_INLINE_VISIBILITY 5393_Tp* 5394undeclare_reachable(_Tp* __p) 5395{ 5396 return static_cast<_Tp*>(__undeclare_reachable(__p)); 5397} 5398 5399_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); 5400 5401// --- Helper for container swap -- 5402template <typename _Alloc> 5403inline _LIBCPP_INLINE_VISIBILITY 5404void __swap_allocator(_Alloc & __a1, _Alloc & __a2) 5405#if _LIBCPP_STD_VER >= 14 5406 _NOEXCEPT 5407#else 5408 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5409#endif 5410{ 5411 __swap_allocator(__a1, __a2, 5412 integral_constant<bool, _VSTD::allocator_traits<_Alloc>::propagate_on_container_swap::value>()); 5413} 5414 5415template <typename _Alloc> 5416_LIBCPP_INLINE_VISIBILITY 5417void __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type) 5418#if _LIBCPP_STD_VER >= 14 5419 _NOEXCEPT 5420#else 5421 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5422#endif 5423{ 5424 using _VSTD::swap; 5425 swap(__a1, __a2); 5426} 5427 5428template <typename _Alloc> 5429inline _LIBCPP_INLINE_VISIBILITY 5430void __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {} 5431 5432template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> > 5433struct __noexcept_move_assign_container : public integral_constant<bool, 5434 _Traits::propagate_on_container_move_assignment::value 5435#if _LIBCPP_STD_VER > 14 5436 || _Traits::is_always_equal::value 5437#else 5438 && is_nothrow_move_assignable<_Alloc>::value 5439#endif 5440 > {}; 5441 5442 5443#ifndef _LIBCPP_HAS_NO_VARIADICS 5444template <class _Tp, class _Alloc> 5445struct __temp_value { 5446 typedef allocator_traits<_Alloc> _Traits; 5447 5448 typename aligned_storage<sizeof(_Tp), alignof(_Tp)>::type __v; 5449 _Alloc &__a; 5450 5451 _Tp *__addr() { return reinterpret_cast<_Tp *>(addressof(__v)); } 5452 _Tp & get() { return *__addr(); } 5453 5454 template<class... _Args> 5455 __temp_value(_Alloc &__alloc, _Args&& ... __args) : __a(__alloc) 5456 { _Traits::construct(__a, __addr(), _VSTD::forward<_Args>(__args)...); } 5457 5458 ~__temp_value() { _Traits::destroy(__a, __addr()); } 5459 }; 5460#endif 5461 5462_LIBCPP_END_NAMESPACE_STD 5463 5464#endif // _LIBCPP_MEMORY 5465