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