1// -*- C++ -*- 2//===-------------------------- memory ------------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_MEMORY 12#define _LIBCPP_MEMORY 13 14/* 15 memory synopsis 16 17namespace std 18{ 19 20struct allocator_arg_t { }; 21constexpr allocator_arg_t allocator_arg = allocator_arg_t(); 22 23template <class T, class Alloc> struct uses_allocator; 24 25template <class Ptr> 26struct pointer_traits 27{ 28 typedef Ptr pointer; 29 typedef <details> element_type; 30 typedef <details> difference_type; 31 32 template <class U> using rebind = <details>; 33 34 static pointer pointer_to(<details>); 35}; 36 37template <class T> 38struct pointer_traits<T*> 39{ 40 typedef T* pointer; 41 typedef T element_type; 42 typedef ptrdiff_t difference_type; 43 44 template <class U> using rebind = U*; 45 46 static pointer pointer_to(<details>) noexcept; 47}; 48 49template <class Alloc> 50struct allocator_traits 51{ 52 typedef Alloc allocator_type; 53 typedef typename allocator_type::value_type 54 value_type; 55 56 typedef Alloc::pointer | value_type* pointer; 57 typedef Alloc::const_pointer 58 | pointer_traits<pointer>::rebind<const value_type> 59 const_pointer; 60 typedef Alloc::void_pointer 61 | pointer_traits<pointer>::rebind<void> 62 void_pointer; 63 typedef Alloc::const_void_pointer 64 | pointer_traits<pointer>::rebind<const void> 65 const_void_pointer; 66 typedef Alloc::difference_type 67 | pointer_traits<pointer>::difference_type 68 difference_type; 69 typedef Alloc::size_type 70 | make_unsigned<difference_type>::type 71 size_type; 72 typedef Alloc::propagate_on_container_copy_assignment 73 | false_type propagate_on_container_copy_assignment; 74 typedef Alloc::propagate_on_container_move_assignment 75 | false_type propagate_on_container_move_assignment; 76 typedef Alloc::propagate_on_container_swap 77 | false_type propagate_on_container_swap; 78 typedef Alloc::is_always_equal 79 | is_empty is_always_equal; 80 81 template <class T> using rebind_alloc = Alloc::rebind<U>::other | Alloc<T, Args...>; 82 template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>; 83 84 static pointer allocate(allocator_type& a, size_type n); 85 static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint); 86 87 static void deallocate(allocator_type& a, pointer p, size_type n) noexcept; 88 89 template <class T, class... Args> 90 static void construct(allocator_type& a, T* p, Args&&... args); 91 92 template <class T> 93 static void destroy(allocator_type& a, T* p); 94 95 static size_type max_size(const allocator_type& a); // noexcept in C++14 96 97 static allocator_type 98 select_on_container_copy_construction(const allocator_type& a); 99}; 100 101template <> 102class allocator<void> 103{ 104public: 105 typedef void* pointer; 106 typedef const void* const_pointer; 107 typedef void value_type; 108 109 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 110}; 111 112template <class T> 113class allocator 114{ 115public: 116 typedef size_t size_type; 117 typedef ptrdiff_t difference_type; 118 typedef T* pointer; 119 typedef const T* const_pointer; 120 typedef typename add_lvalue_reference<T>::type reference; 121 typedef typename add_lvalue_reference<const T>::type const_reference; 122 typedef T value_type; 123 124 template <class U> struct rebind {typedef allocator<U> other;}; 125 126 allocator() noexcept; 127 allocator(const allocator&) noexcept; 128 template <class U> allocator(const allocator<U>&) noexcept; 129 ~allocator(); 130 pointer address(reference x) const noexcept; 131 const_pointer address(const_reference x) const noexcept; 132 pointer allocate(size_type, allocator<void>::const_pointer hint = 0); 133 void deallocate(pointer p, size_type n) noexcept; 134 size_type max_size() const noexcept; 135 template<class U, class... Args> 136 void construct(U* p, Args&&... args); 137 template <class U> 138 void destroy(U* p); 139}; 140 141template <class T, class U> 142bool operator==(const allocator<T>&, const allocator<U>&) noexcept; 143 144template <class T, class U> 145bool operator!=(const allocator<T>&, const allocator<U>&) noexcept; 146 147template <class OutputIterator, class T> 148class raw_storage_iterator 149 : public iterator<output_iterator_tag, 150 T, // purposefully not C++03 151 ptrdiff_t, // purposefully not C++03 152 T*, // purposefully not C++03 153 raw_storage_iterator&> // purposefully not C++03 154{ 155public: 156 explicit raw_storage_iterator(OutputIterator x); 157 raw_storage_iterator& operator*(); 158 raw_storage_iterator& operator=(const T& element); 159 raw_storage_iterator& operator++(); 160 raw_storage_iterator operator++(int); 161}; 162 163template <class T> pair<T*,ptrdiff_t> get_temporary_buffer(ptrdiff_t n) noexcept; 164template <class T> void return_temporary_buffer(T* p) noexcept; 165 166template <class T> T* addressof(T& r) noexcept; 167template <class T> T* addressof(const T&& r) noexcept = delete; 168 169template <class InputIterator, class ForwardIterator> 170ForwardIterator 171uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result); 172 173template <class InputIterator, class Size, class ForwardIterator> 174ForwardIterator 175uninitialized_copy_n(InputIterator first, Size n, ForwardIterator result); 176 177template <class ForwardIterator, class T> 178void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x); 179 180template <class ForwardIterator, class Size, class T> 181ForwardIterator 182uninitialized_fill_n(ForwardIterator first, Size n, const T& x); 183 184template <class T> 185void destroy_at(T* location); 186 187template <class ForwardIterator> 188 void destroy(ForwardIterator first, ForwardIterator last); 189 190template <class ForwardIterator, class Size> 191 ForwardIterator destroy_n(ForwardIterator first, Size n); 192 193template <class InputIterator, class ForwardIterator> 194 ForwardIterator uninitialized_move(InputIterator first, InputIterator last, ForwardIterator result); 195 196template <class InputIterator, class Size, class ForwardIterator> 197 pair<InputIterator,ForwardIterator> uninitialized_move_n(InputIterator first, Size n, ForwardIterator result); 198 199template <class ForwardIterator> 200 void uninitialized_value_construct(ForwardIterator first, ForwardIterator last); 201 202template <class ForwardIterator, class Size> 203 ForwardIterator uninitialized_value_construct_n(ForwardIterator first, Size n); 204 205template <class ForwardIterator> 206 void uninitialized_default_construct(ForwardIterator first, ForwardIterator last); 207 208template <class ForwardIterator, class Size> 209 ForwardIterator uninitialized_default_construct_n(ForwardIterator first, Size n); 210 211template <class Y> struct auto_ptr_ref {}; 212 213template<class X> 214class auto_ptr 215{ 216public: 217 typedef X element_type; 218 219 explicit auto_ptr(X* p =0) throw(); 220 auto_ptr(auto_ptr&) throw(); 221 template<class Y> auto_ptr(auto_ptr<Y>&) throw(); 222 auto_ptr& operator=(auto_ptr&) throw(); 223 template<class Y> auto_ptr& operator=(auto_ptr<Y>&) throw(); 224 auto_ptr& operator=(auto_ptr_ref<X> r) throw(); 225 ~auto_ptr() throw(); 226 227 typename add_lvalue_reference<X>::type operator*() const throw(); 228 X* operator->() const throw(); 229 X* get() const throw(); 230 X* release() throw(); 231 void reset(X* p =0) throw(); 232 233 auto_ptr(auto_ptr_ref<X>) throw(); 234 template<class Y> operator auto_ptr_ref<Y>() throw(); 235 template<class Y> operator auto_ptr<Y>() throw(); 236}; 237 238template <class T> 239struct default_delete 240{ 241 constexpr default_delete() noexcept = default; 242 template <class U> default_delete(const default_delete<U>&) noexcept; 243 244 void operator()(T*) const noexcept; 245}; 246 247template <class T> 248struct default_delete<T[]> 249{ 250 constexpr default_delete() noexcept = default; 251 void operator()(T*) const noexcept; 252 template <class U> void operator()(U*) const = delete; 253}; 254 255template <class T, class D = default_delete<T>> 256class unique_ptr 257{ 258public: 259 typedef see below pointer; 260 typedef T element_type; 261 typedef D deleter_type; 262 263 // constructors 264 constexpr unique_ptr() noexcept; 265 explicit unique_ptr(pointer p) noexcept; 266 unique_ptr(pointer p, see below d1) noexcept; 267 unique_ptr(pointer p, see below d2) noexcept; 268 unique_ptr(unique_ptr&& u) noexcept; 269 unique_ptr(nullptr_t) noexcept : unique_ptr() { } 270 template <class U, class E> 271 unique_ptr(unique_ptr<U, E>&& u) noexcept; 272 template <class U> 273 unique_ptr(auto_ptr<U>&& u) noexcept; 274 275 // destructor 276 ~unique_ptr(); 277 278 // assignment 279 unique_ptr& operator=(unique_ptr&& u) noexcept; 280 template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept; 281 unique_ptr& operator=(nullptr_t) noexcept; 282 283 // observers 284 typename add_lvalue_reference<T>::type operator*() const; 285 pointer operator->() const noexcept; 286 pointer get() const noexcept; 287 deleter_type& get_deleter() noexcept; 288 const deleter_type& get_deleter() const noexcept; 289 explicit operator bool() const noexcept; 290 291 // modifiers 292 pointer release() noexcept; 293 void reset(pointer p = pointer()) noexcept; 294 void swap(unique_ptr& u) noexcept; 295}; 296 297template <class T, class D> 298class unique_ptr<T[], D> 299{ 300public: 301 typedef implementation-defined pointer; 302 typedef T element_type; 303 typedef D deleter_type; 304 305 // constructors 306 constexpr unique_ptr() noexcept; 307 explicit unique_ptr(pointer p) noexcept; 308 unique_ptr(pointer p, see below d) noexcept; 309 unique_ptr(pointer p, see below d) noexcept; 310 unique_ptr(unique_ptr&& u) noexcept; 311 unique_ptr(nullptr_t) noexcept : unique_ptr() { } 312 313 // destructor 314 ~unique_ptr(); 315 316 // assignment 317 unique_ptr& operator=(unique_ptr&& u) noexcept; 318 unique_ptr& operator=(nullptr_t) noexcept; 319 320 // observers 321 T& operator[](size_t i) const; 322 pointer get() const noexcept; 323 deleter_type& get_deleter() noexcept; 324 const deleter_type& get_deleter() const noexcept; 325 explicit operator bool() const noexcept; 326 327 // modifiers 328 pointer release() noexcept; 329 void reset(pointer p = pointer()) noexcept; 330 void reset(nullptr_t) noexcept; 331 template <class U> void reset(U) = delete; 332 void swap(unique_ptr& u) noexcept; 333}; 334 335template <class T, class D> 336 void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept; 337 338template <class T1, class D1, class T2, class D2> 339 bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 340template <class T1, class D1, class T2, class D2> 341 bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 342template <class T1, class D1, class T2, class D2> 343 bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 344template <class T1, class D1, class T2, class D2> 345 bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 346template <class T1, class D1, class T2, class D2> 347 bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 348template <class T1, class D1, class T2, class D2> 349 bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 350 351template <class T, class D> 352 bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; 353template <class T, class D> 354 bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept; 355template <class T, class D> 356 bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept; 357template <class T, class D> 358 bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept; 359 360template <class T, class D> 361 bool operator<(const unique_ptr<T, D>& x, nullptr_t); 362template <class T, class D> 363 bool operator<(nullptr_t, const unique_ptr<T, D>& y); 364template <class T, class D> 365 bool operator<=(const unique_ptr<T, D>& x, nullptr_t); 366template <class T, class D> 367 bool operator<=(nullptr_t, const unique_ptr<T, D>& y); 368template <class T, class D> 369 bool operator>(const unique_ptr<T, D>& x, nullptr_t); 370template <class T, class D> 371 bool operator>(nullptr_t, const unique_ptr<T, D>& y); 372template <class T, class D> 373 bool operator>=(const unique_ptr<T, D>& x, nullptr_t); 374template <class T, class D> 375 bool operator>=(nullptr_t, const unique_ptr<T, D>& y); 376 377class bad_weak_ptr 378 : public std::exception 379{ 380 bad_weak_ptr() noexcept; 381}; 382 383template<class T, class... Args> unique_ptr<T> make_unique(Args&&... args); // C++14 384template<class T> unique_ptr<T> make_unique(size_t n); // C++14 385template<class T, class... Args> unspecified make_unique(Args&&...) = delete; // C++14, T == U[N] 386 387template<class T> 388class shared_ptr 389{ 390public: 391 typedef T element_type; 392 typedef weak_ptr<T> weak_type; // C++17 393 394 // constructors: 395 constexpr shared_ptr() noexcept; 396 template<class Y> explicit shared_ptr(Y* p); 397 template<class Y, class D> shared_ptr(Y* p, D d); 398 template<class Y, class D, class A> shared_ptr(Y* p, D d, A a); 399 template <class D> shared_ptr(nullptr_t p, D d); 400 template <class D, class A> shared_ptr(nullptr_t p, D d, A a); 401 template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p) noexcept; 402 shared_ptr(const shared_ptr& r) noexcept; 403 template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept; 404 shared_ptr(shared_ptr&& r) noexcept; 405 template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept; 406 template<class Y> explicit shared_ptr(const weak_ptr<Y>& r); 407 template<class Y> shared_ptr(auto_ptr<Y>&& r); 408 template <class Y, class D> shared_ptr(unique_ptr<Y, D>&& r); 409 shared_ptr(nullptr_t) : shared_ptr() { } 410 411 // destructor: 412 ~shared_ptr(); 413 414 // assignment: 415 shared_ptr& operator=(const shared_ptr& r) noexcept; 416 template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept; 417 shared_ptr& operator=(shared_ptr&& r) noexcept; 418 template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r); 419 template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); 420 template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r); 421 422 // modifiers: 423 void swap(shared_ptr& r) noexcept; 424 void reset() noexcept; 425 template<class Y> void reset(Y* p); 426 template<class Y, class D> void reset(Y* p, D d); 427 template<class Y, class D, class A> void reset(Y* p, D d, A a); 428 429 // observers: 430 T* get() const noexcept; 431 T& operator*() const noexcept; 432 T* operator->() const noexcept; 433 long use_count() const noexcept; 434 bool unique() const noexcept; 435 explicit operator bool() const noexcept; 436 template<class U> bool owner_before(shared_ptr<U> const& b) const; 437 template<class U> bool owner_before(weak_ptr<U> const& b) const; 438}; 439 440// shared_ptr comparisons: 441template<class T, class U> 442 bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 443template<class T, class U> 444 bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 445template<class T, class U> 446 bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 447template<class T, class U> 448 bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 449template<class T, class U> 450 bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 451template<class T, class U> 452 bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 453 454template <class T> 455 bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept; 456template <class T> 457 bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept; 458template <class T> 459 bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept; 460template <class T> 461 bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept; 462template <class T> 463 bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept; 464template <class T> 465bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept; 466template <class T> 467 bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept; 468template <class T> 469 bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept; 470template <class T> 471 bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept; 472template <class T> 473 bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept; 474template <class T> 475 bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept; 476template <class T> 477 bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept; 478 479// shared_ptr specialized algorithms: 480template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept; 481 482// shared_ptr casts: 483template<class T, class U> 484 shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept; 485template<class T, class U> 486 shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept; 487template<class T, class U> 488 shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept; 489 490// shared_ptr I/O: 491template<class E, class T, class Y> 492 basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, shared_ptr<Y> const& p); 493 494// shared_ptr get_deleter: 495template<class D, class T> D* get_deleter(shared_ptr<T> const& p) noexcept; 496 497template<class T, class... Args> 498 shared_ptr<T> make_shared(Args&&... args); 499template<class T, class A, class... Args> 500 shared_ptr<T> allocate_shared(const A& a, Args&&... args); 501 502template<class T> 503class weak_ptr 504{ 505public: 506 typedef T element_type; 507 508 // constructors 509 constexpr weak_ptr() noexcept; 510 template<class Y> weak_ptr(shared_ptr<Y> const& r) noexcept; 511 weak_ptr(weak_ptr const& r) noexcept; 512 template<class Y> weak_ptr(weak_ptr<Y> const& r) noexcept; 513 weak_ptr(weak_ptr&& r) noexcept; // C++14 514 template<class Y> weak_ptr(weak_ptr<Y>&& r) noexcept; // C++14 515 516 // destructor 517 ~weak_ptr(); 518 519 // assignment 520 weak_ptr& operator=(weak_ptr const& r) noexcept; 521 template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r) noexcept; 522 template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r) noexcept; 523 weak_ptr& operator=(weak_ptr&& r) noexcept; // C++14 524 template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r) noexcept; // C++14 525 526 // modifiers 527 void swap(weak_ptr& r) noexcept; 528 void reset() noexcept; 529 530 // observers 531 long use_count() const noexcept; 532 bool expired() const noexcept; 533 shared_ptr<T> lock() const noexcept; 534 template<class U> bool owner_before(shared_ptr<U> const& b) const; 535 template<class U> bool owner_before(weak_ptr<U> const& b) const; 536}; 537 538// weak_ptr specialized algorithms: 539template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept; 540 541// class owner_less: 542template<class T> struct owner_less; 543 544template<class T> 545struct owner_less<shared_ptr<T>> 546 : binary_function<shared_ptr<T>, shared_ptr<T>, bool> 547{ 548 typedef bool result_type; 549 bool operator()(shared_ptr<T> const&, shared_ptr<T> const&) const; 550 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const; 551 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const; 552}; 553 554template<class T> 555struct owner_less<weak_ptr<T>> 556 : binary_function<weak_ptr<T>, weak_ptr<T>, bool> 557{ 558 typedef bool result_type; 559 bool operator()(weak_ptr<T> const&, weak_ptr<T> const&) const; 560 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const; 561 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const; 562}; 563 564template<class T> 565class enable_shared_from_this 566{ 567protected: 568 constexpr enable_shared_from_this() noexcept; 569 enable_shared_from_this(enable_shared_from_this const&) noexcept; 570 enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept; 571 ~enable_shared_from_this(); 572public: 573 shared_ptr<T> shared_from_this(); 574 shared_ptr<T const> shared_from_this() const; 575}; 576 577template<class T> 578 bool atomic_is_lock_free(const shared_ptr<T>* p); 579template<class T> 580 shared_ptr<T> atomic_load(const shared_ptr<T>* p); 581template<class T> 582 shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo); 583template<class T> 584 void atomic_store(shared_ptr<T>* p, shared_ptr<T> r); 585template<class T> 586 void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 587template<class T> 588 shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r); 589template<class T> 590 shared_ptr<T> 591 atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 592template<class T> 593 bool 594 atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 595template<class T> 596 bool 597 atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 598template<class T> 599 bool 600 atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 601 shared_ptr<T> w, memory_order success, 602 memory_order failure); 603template<class T> 604 bool 605 atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 606 shared_ptr<T> w, memory_order success, 607 memory_order failure); 608// Hash support 609template <class T> struct hash; 610template <class T, class D> struct hash<unique_ptr<T, D> >; 611template <class T> struct hash<shared_ptr<T> >; 612 613// Pointer safety 614enum class pointer_safety { relaxed, preferred, strict }; 615void declare_reachable(void *p); 616template <class T> T *undeclare_reachable(T *p); 617void declare_no_pointers(char *p, size_t n); 618void undeclare_no_pointers(char *p, size_t n); 619pointer_safety get_pointer_safety() noexcept; 620 621void* align(size_t alignment, size_t size, void*& ptr, size_t& space); 622 623} // std 624 625*/ 626 627#include <__config> 628#include <type_traits> 629#include <typeinfo> 630#include <cstddef> 631#include <cstdint> 632#include <new> 633#include <utility> 634#include <limits> 635#include <iterator> 636#include <__functional_base> 637#include <iosfwd> 638#include <tuple> 639#include <stdexcept> 640#include <cstring> 641 642#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 643# include <atomic> 644#endif 645 646#include <__undef_min_max> 647 648#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 649#pragma GCC system_header 650#endif 651 652_LIBCPP_BEGIN_NAMESPACE_STD 653 654template <class _ValueType> 655inline _LIBCPP_ALWAYS_INLINE 656_ValueType __libcpp_relaxed_load(_ValueType const* __value) { 657#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 658 defined(__ATOMIC_RELAXED) && \ 659 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407) 660 return __atomic_load_n(__value, __ATOMIC_RELAXED); 661#else 662 return *__value; 663#endif 664} 665 666template <class _ValueType> 667inline _LIBCPP_ALWAYS_INLINE 668_ValueType __libcpp_acquire_load(_ValueType const* __value) { 669#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 670 defined(__ATOMIC_ACQUIRE) && \ 671 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407) 672 return __atomic_load_n(__value, __ATOMIC_ACQUIRE); 673#else 674 return *__value; 675#endif 676} 677 678// addressof moved to <type_traits> 679 680template <class _Tp> class allocator; 681 682template <> 683class _LIBCPP_TEMPLATE_VIS allocator<void> 684{ 685public: 686 typedef void* pointer; 687 typedef const void* const_pointer; 688 typedef void value_type; 689 690 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 691}; 692 693template <> 694class _LIBCPP_TEMPLATE_VIS allocator<const void> 695{ 696public: 697 typedef const void* pointer; 698 typedef const void* const_pointer; 699 typedef const void value_type; 700 701 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 702}; 703 704// pointer_traits 705 706template <class _Tp> 707struct __has_element_type 708{ 709private: 710 struct __two {char __lx; char __lxx;}; 711 template <class _Up> static __two __test(...); 712 template <class _Up> static char __test(typename _Up::element_type* = 0); 713public: 714 static const bool value = sizeof(__test<_Tp>(0)) == 1; 715}; 716 717template <class _Ptr, bool = __has_element_type<_Ptr>::value> 718struct __pointer_traits_element_type; 719 720template <class _Ptr> 721struct __pointer_traits_element_type<_Ptr, true> 722{ 723 typedef typename _Ptr::element_type type; 724}; 725 726#ifndef _LIBCPP_HAS_NO_VARIADICS 727 728template <template <class, class...> class _Sp, class _Tp, class ..._Args> 729struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true> 730{ 731 typedef typename _Sp<_Tp, _Args...>::element_type type; 732}; 733 734template <template <class, class...> class _Sp, class _Tp, class ..._Args> 735struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false> 736{ 737 typedef _Tp type; 738}; 739 740#else // _LIBCPP_HAS_NO_VARIADICS 741 742template <template <class> class _Sp, class _Tp> 743struct __pointer_traits_element_type<_Sp<_Tp>, true> 744{ 745 typedef typename _Sp<_Tp>::element_type type; 746}; 747 748template <template <class> class _Sp, class _Tp> 749struct __pointer_traits_element_type<_Sp<_Tp>, false> 750{ 751 typedef _Tp type; 752}; 753 754template <template <class, class> class _Sp, class _Tp, class _A0> 755struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true> 756{ 757 typedef typename _Sp<_Tp, _A0>::element_type type; 758}; 759 760template <template <class, class> class _Sp, class _Tp, class _A0> 761struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false> 762{ 763 typedef _Tp type; 764}; 765 766template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 767struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true> 768{ 769 typedef typename _Sp<_Tp, _A0, _A1>::element_type type; 770}; 771 772template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 773struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false> 774{ 775 typedef _Tp type; 776}; 777 778template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 779 class _A1, class _A2> 780struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true> 781{ 782 typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type; 783}; 784 785template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 786 class _A1, class _A2> 787struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false> 788{ 789 typedef _Tp type; 790}; 791 792#endif // _LIBCPP_HAS_NO_VARIADICS 793 794template <class _Tp> 795struct __has_difference_type 796{ 797private: 798 struct __two {char __lx; char __lxx;}; 799 template <class _Up> static __two __test(...); 800 template <class _Up> static char __test(typename _Up::difference_type* = 0); 801public: 802 static const bool value = sizeof(__test<_Tp>(0)) == 1; 803}; 804 805template <class _Ptr, bool = __has_difference_type<_Ptr>::value> 806struct __pointer_traits_difference_type 807{ 808 typedef ptrdiff_t type; 809}; 810 811template <class _Ptr> 812struct __pointer_traits_difference_type<_Ptr, true> 813{ 814 typedef typename _Ptr::difference_type type; 815}; 816 817template <class _Tp, class _Up> 818struct __has_rebind 819{ 820private: 821 struct __two {char __lx; char __lxx;}; 822 template <class _Xp> static __two __test(...); 823 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0); 824public: 825 static const bool value = sizeof(__test<_Tp>(0)) == 1; 826}; 827 828template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 829struct __pointer_traits_rebind 830{ 831#ifndef _LIBCPP_CXX03_LANG 832 typedef typename _Tp::template rebind<_Up> type; 833#else 834 typedef typename _Tp::template rebind<_Up>::other type; 835#endif 836}; 837 838#ifndef _LIBCPP_HAS_NO_VARIADICS 839 840template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 841struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true> 842{ 843#ifndef _LIBCPP_CXX03_LANG 844 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type; 845#else 846 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type; 847#endif 848}; 849 850template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 851struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false> 852{ 853 typedef _Sp<_Up, _Args...> type; 854}; 855 856#else // _LIBCPP_HAS_NO_VARIADICS 857 858template <template <class> class _Sp, class _Tp, class _Up> 859struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true> 860{ 861#ifndef _LIBCPP_CXX03_LANG 862 typedef typename _Sp<_Tp>::template rebind<_Up> type; 863#else 864 typedef typename _Sp<_Tp>::template rebind<_Up>::other type; 865#endif 866}; 867 868template <template <class> class _Sp, class _Tp, class _Up> 869struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false> 870{ 871 typedef _Sp<_Up> type; 872}; 873 874template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 875struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true> 876{ 877#ifndef _LIBCPP_CXX03_LANG 878 typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type; 879#else 880 typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type; 881#endif 882}; 883 884template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 885struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false> 886{ 887 typedef _Sp<_Up, _A0> type; 888}; 889 890template <template <class, class, class> class _Sp, class _Tp, class _A0, 891 class _A1, class _Up> 892struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true> 893{ 894#ifndef _LIBCPP_CXX03_LANG 895 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type; 896#else 897 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type; 898#endif 899}; 900 901template <template <class, class, class> class _Sp, class _Tp, class _A0, 902 class _A1, class _Up> 903struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false> 904{ 905 typedef _Sp<_Up, _A0, _A1> type; 906}; 907 908template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 909 class _A1, class _A2, class _Up> 910struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true> 911{ 912#ifndef _LIBCPP_CXX03_LANG 913 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type; 914#else 915 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 916#endif 917}; 918 919template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 920 class _A1, class _A2, class _Up> 921struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false> 922{ 923 typedef _Sp<_Up, _A0, _A1, _A2> type; 924}; 925 926#endif // _LIBCPP_HAS_NO_VARIADICS 927 928template <class _Ptr> 929struct _LIBCPP_TEMPLATE_VIS pointer_traits 930{ 931 typedef _Ptr pointer; 932 typedef typename __pointer_traits_element_type<pointer>::type element_type; 933 typedef typename __pointer_traits_difference_type<pointer>::type difference_type; 934 935#ifndef _LIBCPP_CXX03_LANG 936 template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type; 937#else 938 template <class _Up> struct rebind 939 {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;}; 940#endif // _LIBCPP_CXX03_LANG 941 942private: 943 struct __nat {}; 944public: 945 _LIBCPP_INLINE_VISIBILITY 946 static pointer pointer_to(typename conditional<is_void<element_type>::value, 947 __nat, element_type>::type& __r) 948 {return pointer::pointer_to(__r);} 949}; 950 951template <class _Tp> 952struct _LIBCPP_TEMPLATE_VIS pointer_traits<_Tp*> 953{ 954 typedef _Tp* pointer; 955 typedef _Tp element_type; 956 typedef ptrdiff_t difference_type; 957 958#ifndef _LIBCPP_CXX03_LANG 959 template <class _Up> using rebind = _Up*; 960#else 961 template <class _Up> struct rebind {typedef _Up* other;}; 962#endif 963 964private: 965 struct __nat {}; 966public: 967 _LIBCPP_INLINE_VISIBILITY 968 static pointer pointer_to(typename conditional<is_void<element_type>::value, 969 __nat, element_type>::type& __r) _NOEXCEPT 970 {return _VSTD::addressof(__r);} 971}; 972 973template <class _From, class _To> 974struct __rebind_pointer { 975#ifndef _LIBCPP_CXX03_LANG 976 typedef typename pointer_traits<_From>::template rebind<_To> type; 977#else 978 typedef typename pointer_traits<_From>::template rebind<_To>::other type; 979#endif 980}; 981 982// allocator_traits 983 984namespace __has_pointer_type_imp 985{ 986 template <class _Up> static __two __test(...); 987 template <class _Up> static char __test(typename _Up::pointer* = 0); 988} 989 990template <class _Tp> 991struct __has_pointer_type 992 : public integral_constant<bool, sizeof(__has_pointer_type_imp::__test<_Tp>(0)) == 1> 993{ 994}; 995 996namespace __pointer_type_imp 997{ 998 999template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value> 1000struct __pointer_type 1001{ 1002 typedef typename _Dp::pointer type; 1003}; 1004 1005template <class _Tp, class _Dp> 1006struct __pointer_type<_Tp, _Dp, false> 1007{ 1008 typedef _Tp* type; 1009}; 1010 1011} // __pointer_type_imp 1012 1013template <class _Tp, class _Dp> 1014struct __pointer_type 1015{ 1016 typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type; 1017}; 1018 1019template <class _Tp> 1020struct __has_const_pointer 1021{ 1022private: 1023 struct __two {char __lx; char __lxx;}; 1024 template <class _Up> static __two __test(...); 1025 template <class _Up> static char __test(typename _Up::const_pointer* = 0); 1026public: 1027 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1028}; 1029 1030template <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value> 1031struct __const_pointer 1032{ 1033 typedef typename _Alloc::const_pointer type; 1034}; 1035 1036template <class _Tp, class _Ptr, class _Alloc> 1037struct __const_pointer<_Tp, _Ptr, _Alloc, false> 1038{ 1039#ifndef _LIBCPP_CXX03_LANG 1040 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp> type; 1041#else 1042 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type; 1043#endif 1044}; 1045 1046template <class _Tp> 1047struct __has_void_pointer 1048{ 1049private: 1050 struct __two {char __lx; char __lxx;}; 1051 template <class _Up> static __two __test(...); 1052 template <class _Up> static char __test(typename _Up::void_pointer* = 0); 1053public: 1054 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1055}; 1056 1057template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value> 1058struct __void_pointer 1059{ 1060 typedef typename _Alloc::void_pointer type; 1061}; 1062 1063template <class _Ptr, class _Alloc> 1064struct __void_pointer<_Ptr, _Alloc, false> 1065{ 1066#ifndef _LIBCPP_CXX03_LANG 1067 typedef typename pointer_traits<_Ptr>::template rebind<void> type; 1068#else 1069 typedef typename pointer_traits<_Ptr>::template rebind<void>::other type; 1070#endif 1071}; 1072 1073template <class _Tp> 1074struct __has_const_void_pointer 1075{ 1076private: 1077 struct __two {char __lx; char __lxx;}; 1078 template <class _Up> static __two __test(...); 1079 template <class _Up> static char __test(typename _Up::const_void_pointer* = 0); 1080public: 1081 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1082}; 1083 1084template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value> 1085struct __const_void_pointer 1086{ 1087 typedef typename _Alloc::const_void_pointer type; 1088}; 1089 1090template <class _Ptr, class _Alloc> 1091struct __const_void_pointer<_Ptr, _Alloc, false> 1092{ 1093#ifndef _LIBCPP_CXX03_LANG 1094 typedef typename pointer_traits<_Ptr>::template rebind<const void> type; 1095#else 1096 typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type; 1097#endif 1098}; 1099 1100template <class _Tp> 1101inline _LIBCPP_INLINE_VISIBILITY 1102_Tp* 1103__to_raw_pointer(_Tp* __p) _NOEXCEPT 1104{ 1105 return __p; 1106} 1107 1108template <class _Pointer> 1109inline _LIBCPP_INLINE_VISIBILITY 1110typename pointer_traits<_Pointer>::element_type* 1111__to_raw_pointer(_Pointer __p) _NOEXCEPT 1112{ 1113 return _VSTD::__to_raw_pointer(__p.operator->()); 1114} 1115 1116template <class _Tp> 1117struct __has_size_type 1118{ 1119private: 1120 struct __two {char __lx; char __lxx;}; 1121 template <class _Up> static __two __test(...); 1122 template <class _Up> static char __test(typename _Up::size_type* = 0); 1123public: 1124 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1125}; 1126 1127template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value> 1128struct __size_type 1129{ 1130 typedef typename make_unsigned<_DiffType>::type type; 1131}; 1132 1133template <class _Alloc, class _DiffType> 1134struct __size_type<_Alloc, _DiffType, true> 1135{ 1136 typedef typename _Alloc::size_type type; 1137}; 1138 1139template <class _Tp> 1140struct __has_propagate_on_container_copy_assignment 1141{ 1142private: 1143 struct __two {char __lx; char __lxx;}; 1144 template <class _Up> static __two __test(...); 1145 template <class _Up> static char __test(typename _Up::propagate_on_container_copy_assignment* = 0); 1146public: 1147 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1148}; 1149 1150template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value> 1151struct __propagate_on_container_copy_assignment 1152{ 1153 typedef false_type type; 1154}; 1155 1156template <class _Alloc> 1157struct __propagate_on_container_copy_assignment<_Alloc, true> 1158{ 1159 typedef typename _Alloc::propagate_on_container_copy_assignment type; 1160}; 1161 1162template <class _Tp> 1163struct __has_propagate_on_container_move_assignment 1164{ 1165private: 1166 struct __two {char __lx; char __lxx;}; 1167 template <class _Up> static __two __test(...); 1168 template <class _Up> static char __test(typename _Up::propagate_on_container_move_assignment* = 0); 1169public: 1170 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1171}; 1172 1173template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value> 1174struct __propagate_on_container_move_assignment 1175{ 1176 typedef false_type type; 1177}; 1178 1179template <class _Alloc> 1180struct __propagate_on_container_move_assignment<_Alloc, true> 1181{ 1182 typedef typename _Alloc::propagate_on_container_move_assignment type; 1183}; 1184 1185template <class _Tp> 1186struct __has_propagate_on_container_swap 1187{ 1188private: 1189 struct __two {char __lx; char __lxx;}; 1190 template <class _Up> static __two __test(...); 1191 template <class _Up> static char __test(typename _Up::propagate_on_container_swap* = 0); 1192public: 1193 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1194}; 1195 1196template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value> 1197struct __propagate_on_container_swap 1198{ 1199 typedef false_type type; 1200}; 1201 1202template <class _Alloc> 1203struct __propagate_on_container_swap<_Alloc, true> 1204{ 1205 typedef typename _Alloc::propagate_on_container_swap type; 1206}; 1207 1208template <class _Tp> 1209struct __has_is_always_equal 1210{ 1211private: 1212 struct __two {char __lx; char __lxx;}; 1213 template <class _Up> static __two __test(...); 1214 template <class _Up> static char __test(typename _Up::is_always_equal* = 0); 1215public: 1216 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1217}; 1218 1219template <class _Alloc, bool = __has_is_always_equal<_Alloc>::value> 1220struct __is_always_equal 1221{ 1222 typedef typename _VSTD::is_empty<_Alloc>::type type; 1223}; 1224 1225template <class _Alloc> 1226struct __is_always_equal<_Alloc, true> 1227{ 1228 typedef typename _Alloc::is_always_equal type; 1229}; 1230 1231template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 1232struct __has_rebind_other 1233{ 1234private: 1235 struct __two {char __lx; char __lxx;}; 1236 template <class _Xp> static __two __test(...); 1237 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0); 1238public: 1239 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1240}; 1241 1242template <class _Tp, class _Up> 1243struct __has_rebind_other<_Tp, _Up, false> 1244{ 1245 static const bool value = false; 1246}; 1247 1248template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value> 1249struct __allocator_traits_rebind 1250{ 1251 typedef typename _Tp::template rebind<_Up>::other type; 1252}; 1253 1254#ifndef _LIBCPP_HAS_NO_VARIADICS 1255 1256template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1257struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true> 1258{ 1259 typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type; 1260}; 1261 1262template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1263struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false> 1264{ 1265 typedef _Alloc<_Up, _Args...> type; 1266}; 1267 1268#else // _LIBCPP_HAS_NO_VARIADICS 1269 1270template <template <class> class _Alloc, class _Tp, class _Up> 1271struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true> 1272{ 1273 typedef typename _Alloc<_Tp>::template rebind<_Up>::other type; 1274}; 1275 1276template <template <class> class _Alloc, class _Tp, class _Up> 1277struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false> 1278{ 1279 typedef _Alloc<_Up> type; 1280}; 1281 1282template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1283struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true> 1284{ 1285 typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type; 1286}; 1287 1288template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1289struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false> 1290{ 1291 typedef _Alloc<_Up, _A0> type; 1292}; 1293 1294template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1295 class _A1, class _Up> 1296struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true> 1297{ 1298 typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type; 1299}; 1300 1301template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1302 class _A1, class _Up> 1303struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false> 1304{ 1305 typedef _Alloc<_Up, _A0, _A1> type; 1306}; 1307 1308template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1309 class _A1, class _A2, class _Up> 1310struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true> 1311{ 1312 typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 1313}; 1314 1315template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1316 class _A1, class _A2, class _Up> 1317struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false> 1318{ 1319 typedef _Alloc<_Up, _A0, _A1, _A2> type; 1320}; 1321 1322#endif // _LIBCPP_HAS_NO_VARIADICS 1323 1324#ifndef _LIBCPP_CXX03_LANG 1325 1326template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1327auto 1328__has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1329 -> decltype(__a.allocate(__sz, __p), true_type()); 1330 1331template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1332auto 1333__has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1334 -> false_type; 1335 1336template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1337struct __has_allocate_hint 1338 : integral_constant<bool, 1339 is_same< 1340 decltype(__has_allocate_hint_test(declval<_Alloc>(), 1341 declval<_SizeType>(), 1342 declval<_ConstVoidPtr>())), 1343 true_type>::value> 1344{ 1345}; 1346 1347#else // _LIBCPP_CXX03_LANG 1348 1349template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1350struct __has_allocate_hint 1351 : true_type 1352{ 1353}; 1354 1355#endif // _LIBCPP_CXX03_LANG 1356 1357#if !defined(_LIBCPP_CXX03_LANG) 1358 1359template <class _Alloc, class _Tp, class ..._Args> 1360decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(), 1361 _VSTD::declval<_Args>()...), 1362 true_type()) 1363__has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args); 1364 1365template <class _Alloc, class _Pointer, class ..._Args> 1366false_type 1367__has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args); 1368 1369template <class _Alloc, class _Pointer, class ..._Args> 1370struct __has_construct 1371 : integral_constant<bool, 1372 is_same< 1373 decltype(__has_construct_test(declval<_Alloc>(), 1374 declval<_Pointer>(), 1375 declval<_Args>()...)), 1376 true_type>::value> 1377{ 1378}; 1379 1380template <class _Alloc, class _Pointer> 1381auto 1382__has_destroy_test(_Alloc&& __a, _Pointer&& __p) 1383 -> decltype(__a.destroy(__p), true_type()); 1384 1385template <class _Alloc, class _Pointer> 1386auto 1387__has_destroy_test(const _Alloc& __a, _Pointer&& __p) 1388 -> false_type; 1389 1390template <class _Alloc, class _Pointer> 1391struct __has_destroy 1392 : integral_constant<bool, 1393 is_same< 1394 decltype(__has_destroy_test(declval<_Alloc>(), 1395 declval<_Pointer>())), 1396 true_type>::value> 1397{ 1398}; 1399 1400template <class _Alloc> 1401auto 1402__has_max_size_test(_Alloc&& __a) 1403 -> decltype(__a.max_size(), true_type()); 1404 1405template <class _Alloc> 1406auto 1407__has_max_size_test(const volatile _Alloc& __a) 1408 -> false_type; 1409 1410template <class _Alloc> 1411struct __has_max_size 1412 : integral_constant<bool, 1413 is_same< 1414 decltype(__has_max_size_test(declval<_Alloc&>())), 1415 true_type>::value> 1416{ 1417}; 1418 1419template <class _Alloc> 1420auto 1421__has_select_on_container_copy_construction_test(_Alloc&& __a) 1422 -> decltype(__a.select_on_container_copy_construction(), true_type()); 1423 1424template <class _Alloc> 1425auto 1426__has_select_on_container_copy_construction_test(const volatile _Alloc& __a) 1427 -> false_type; 1428 1429template <class _Alloc> 1430struct __has_select_on_container_copy_construction 1431 : integral_constant<bool, 1432 is_same< 1433 decltype(__has_select_on_container_copy_construction_test(declval<_Alloc&>())), 1434 true_type>::value> 1435{ 1436}; 1437 1438#else // _LIBCPP_CXX03_LANG 1439 1440#ifndef _LIBCPP_HAS_NO_VARIADICS 1441 1442template <class _Alloc, class _Pointer, class ..._Args> 1443struct __has_construct 1444 : false_type 1445{ 1446}; 1447 1448#else // _LIBCPP_HAS_NO_VARIADICS 1449 1450template <class _Alloc, class _Pointer, class _Args> 1451struct __has_construct 1452 : false_type 1453{ 1454}; 1455 1456#endif // _LIBCPP_HAS_NO_VARIADICS 1457 1458template <class _Alloc, class _Pointer> 1459struct __has_destroy 1460 : false_type 1461{ 1462}; 1463 1464template <class _Alloc> 1465struct __has_max_size 1466 : true_type 1467{ 1468}; 1469 1470template <class _Alloc> 1471struct __has_select_on_container_copy_construction 1472 : false_type 1473{ 1474}; 1475 1476#endif // _LIBCPP_CXX03_LANG 1477 1478template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value> 1479struct __alloc_traits_difference_type 1480{ 1481 typedef typename pointer_traits<_Ptr>::difference_type type; 1482}; 1483 1484template <class _Alloc, class _Ptr> 1485struct __alloc_traits_difference_type<_Alloc, _Ptr, true> 1486{ 1487 typedef typename _Alloc::difference_type type; 1488}; 1489 1490template <class _Alloc> 1491struct _LIBCPP_TEMPLATE_VIS allocator_traits 1492{ 1493 typedef _Alloc allocator_type; 1494 typedef typename allocator_type::value_type value_type; 1495 1496 typedef typename __pointer_type<value_type, allocator_type>::type pointer; 1497 typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer; 1498 typedef typename __void_pointer<pointer, allocator_type>::type void_pointer; 1499 typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer; 1500 1501 typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type; 1502 typedef typename __size_type<allocator_type, difference_type>::type size_type; 1503 1504 typedef typename __propagate_on_container_copy_assignment<allocator_type>::type 1505 propagate_on_container_copy_assignment; 1506 typedef typename __propagate_on_container_move_assignment<allocator_type>::type 1507 propagate_on_container_move_assignment; 1508 typedef typename __propagate_on_container_swap<allocator_type>::type 1509 propagate_on_container_swap; 1510 typedef typename __is_always_equal<allocator_type>::type 1511 is_always_equal; 1512 1513#ifndef _LIBCPP_CXX03_LANG 1514 template <class _Tp> using rebind_alloc = 1515 typename __allocator_traits_rebind<allocator_type, _Tp>::type; 1516 template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>; 1517#else // _LIBCPP_CXX03_LANG 1518 template <class _Tp> struct rebind_alloc 1519 {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;}; 1520 template <class _Tp> struct rebind_traits 1521 {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;}; 1522#endif // _LIBCPP_CXX03_LANG 1523 1524 _LIBCPP_INLINE_VISIBILITY 1525 static pointer allocate(allocator_type& __a, size_type __n) 1526 {return __a.allocate(__n);} 1527 _LIBCPP_INLINE_VISIBILITY 1528 static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint) 1529 {return allocate(__a, __n, __hint, 1530 __has_allocate_hint<allocator_type, size_type, const_void_pointer>());} 1531 1532 _LIBCPP_INLINE_VISIBILITY 1533 static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT 1534 {__a.deallocate(__p, __n);} 1535 1536#ifndef _LIBCPP_HAS_NO_VARIADICS 1537 template <class _Tp, class... _Args> 1538 _LIBCPP_INLINE_VISIBILITY 1539 static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args) 1540 {__construct(__has_construct<allocator_type, _Tp*, _Args...>(), 1541 __a, __p, _VSTD::forward<_Args>(__args)...);} 1542#else // _LIBCPP_HAS_NO_VARIADICS 1543 template <class _Tp> 1544 _LIBCPP_INLINE_VISIBILITY 1545 static void construct(allocator_type&, _Tp* __p) 1546 { 1547 ::new ((void*)__p) _Tp(); 1548 } 1549 template <class _Tp, class _A0> 1550 _LIBCPP_INLINE_VISIBILITY 1551 static void construct(allocator_type&, _Tp* __p, const _A0& __a0) 1552 { 1553 ::new ((void*)__p) _Tp(__a0); 1554 } 1555 template <class _Tp, class _A0, class _A1> 1556 _LIBCPP_INLINE_VISIBILITY 1557 static void construct(allocator_type&, _Tp* __p, const _A0& __a0, 1558 const _A1& __a1) 1559 { 1560 ::new ((void*)__p) _Tp(__a0, __a1); 1561 } 1562 template <class _Tp, class _A0, class _A1, class _A2> 1563 _LIBCPP_INLINE_VISIBILITY 1564 static void construct(allocator_type&, _Tp* __p, const _A0& __a0, 1565 const _A1& __a1, const _A2& __a2) 1566 { 1567 ::new ((void*)__p) _Tp(__a0, __a1, __a2); 1568 } 1569#endif // _LIBCPP_HAS_NO_VARIADICS 1570 1571 template <class _Tp> 1572 _LIBCPP_INLINE_VISIBILITY 1573 static void destroy(allocator_type& __a, _Tp* __p) 1574 {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);} 1575 1576 _LIBCPP_INLINE_VISIBILITY 1577 static size_type max_size(const allocator_type& __a) _NOEXCEPT 1578 {return __max_size(__has_max_size<const allocator_type>(), __a);} 1579 1580 _LIBCPP_INLINE_VISIBILITY 1581 static allocator_type 1582 select_on_container_copy_construction(const allocator_type& __a) 1583 {return select_on_container_copy_construction( 1584 __has_select_on_container_copy_construction<const allocator_type>(), 1585 __a);} 1586 1587 template <class _Ptr> 1588 _LIBCPP_INLINE_VISIBILITY 1589 static 1590 void 1591 __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) 1592 { 1593 for (; __begin1 != __end1; ++__begin1, ++__begin2) 1594 construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1)); 1595 } 1596 1597 template <class _Tp> 1598 _LIBCPP_INLINE_VISIBILITY 1599 static 1600 typename enable_if 1601 < 1602 (is_same<allocator_type, allocator<_Tp> >::value 1603 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1604 is_trivially_move_constructible<_Tp>::value, 1605 void 1606 >::type 1607 __construct_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1608 { 1609 ptrdiff_t _Np = __end1 - __begin1; 1610 if (_Np > 0) 1611 { 1612 _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp)); 1613 __begin2 += _Np; 1614 } 1615 } 1616 1617 template <class _Iter, class _Ptr> 1618 _LIBCPP_INLINE_VISIBILITY 1619 static 1620 void 1621 __construct_range_forward(allocator_type& __a, _Iter __begin1, _Iter __end1, _Ptr& __begin2) 1622 { 1623 for (; __begin1 != __end1; ++__begin1, (void) ++__begin2) 1624 construct(__a, _VSTD::__to_raw_pointer(__begin2), *__begin1); 1625 } 1626 1627 template <class _Tp> 1628 _LIBCPP_INLINE_VISIBILITY 1629 static 1630 typename enable_if 1631 < 1632 (is_same<allocator_type, allocator<_Tp> >::value 1633 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1634 is_trivially_move_constructible<_Tp>::value, 1635 void 1636 >::type 1637 __construct_range_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1638 { 1639 typedef typename remove_const<_Tp>::type _Vp; 1640 ptrdiff_t _Np = __end1 - __begin1; 1641 if (_Np > 0) 1642 { 1643 _VSTD::memcpy(const_cast<_Vp*>(__begin2), __begin1, _Np * sizeof(_Tp)); 1644 __begin2 += _Np; 1645 } 1646 } 1647 1648 template <class _Ptr> 1649 _LIBCPP_INLINE_VISIBILITY 1650 static 1651 void 1652 __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2) 1653 { 1654 while (__end1 != __begin1) 1655 { 1656 construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1)); 1657 --__end2; 1658 } 1659 } 1660 1661 template <class _Tp> 1662 _LIBCPP_INLINE_VISIBILITY 1663 static 1664 typename enable_if 1665 < 1666 (is_same<allocator_type, allocator<_Tp> >::value 1667 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1668 is_trivially_move_constructible<_Tp>::value, 1669 void 1670 >::type 1671 __construct_backward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __end2) 1672 { 1673 ptrdiff_t _Np = __end1 - __begin1; 1674 __end2 -= _Np; 1675 if (_Np > 0) 1676 _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp)); 1677 } 1678 1679private: 1680 1681 _LIBCPP_INLINE_VISIBILITY 1682 static pointer allocate(allocator_type& __a, size_type __n, 1683 const_void_pointer __hint, true_type) 1684 {return __a.allocate(__n, __hint);} 1685 _LIBCPP_INLINE_VISIBILITY 1686 static pointer allocate(allocator_type& __a, size_type __n, 1687 const_void_pointer, false_type) 1688 {return __a.allocate(__n);} 1689 1690#ifndef _LIBCPP_HAS_NO_VARIADICS 1691 template <class _Tp, class... _Args> 1692 _LIBCPP_INLINE_VISIBILITY 1693 static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args) 1694 {__a.construct(__p, _VSTD::forward<_Args>(__args)...);} 1695 template <class _Tp, class... _Args> 1696 _LIBCPP_INLINE_VISIBILITY 1697 static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args) 1698 { 1699 ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...); 1700 } 1701#endif // _LIBCPP_HAS_NO_VARIADICS 1702 1703 template <class _Tp> 1704 _LIBCPP_INLINE_VISIBILITY 1705 static void __destroy(true_type, allocator_type& __a, _Tp* __p) 1706 {__a.destroy(__p);} 1707 template <class _Tp> 1708 _LIBCPP_INLINE_VISIBILITY 1709 static void __destroy(false_type, allocator_type&, _Tp* __p) 1710 { 1711 __p->~_Tp(); 1712 } 1713 1714 _LIBCPP_INLINE_VISIBILITY 1715 static size_type __max_size(true_type, const allocator_type& __a) 1716 {return __a.max_size();} 1717 _LIBCPP_INLINE_VISIBILITY 1718 static size_type __max_size(false_type, const allocator_type&) 1719 {return numeric_limits<size_type>::max() / sizeof(value_type);} 1720 1721 _LIBCPP_INLINE_VISIBILITY 1722 static allocator_type 1723 select_on_container_copy_construction(true_type, const allocator_type& __a) 1724 {return __a.select_on_container_copy_construction();} 1725 _LIBCPP_INLINE_VISIBILITY 1726 static allocator_type 1727 select_on_container_copy_construction(false_type, const allocator_type& __a) 1728 {return __a;} 1729}; 1730 1731template <class _Traits, class _Tp> 1732struct __rebind_alloc_helper 1733{ 1734#ifndef _LIBCPP_CXX03_LANG 1735 typedef typename _Traits::template rebind_alloc<_Tp> type; 1736#else 1737 typedef typename _Traits::template rebind_alloc<_Tp>::other type; 1738#endif 1739}; 1740 1741// allocator 1742 1743template <class _Tp> 1744class _LIBCPP_TEMPLATE_VIS allocator 1745{ 1746public: 1747 typedef size_t size_type; 1748 typedef ptrdiff_t difference_type; 1749 typedef _Tp* pointer; 1750 typedef const _Tp* const_pointer; 1751 typedef _Tp& reference; 1752 typedef const _Tp& const_reference; 1753 typedef _Tp value_type; 1754 1755 typedef true_type propagate_on_container_move_assignment; 1756 typedef true_type is_always_equal; 1757 1758 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1759 1760 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1761 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1762 _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT 1763 {return _VSTD::addressof(__x);} 1764 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1765 {return _VSTD::addressof(__x);} 1766 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1767 { 1768 if (__n > max_size()) 1769 __throw_length_error("allocator<T>::allocate(size_t n)" 1770 " 'n' exceeds maximum supported size"); 1771 return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp))); 1772 } 1773 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1774 {_VSTD::__libcpp_deallocate((void*)__p);} 1775 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1776 {return size_type(~0) / sizeof(_Tp);} 1777#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1778 template <class _Up, class... _Args> 1779 _LIBCPP_INLINE_VISIBILITY 1780 void 1781 construct(_Up* __p, _Args&&... __args) 1782 { 1783 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1784 } 1785#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1786 _LIBCPP_INLINE_VISIBILITY 1787 void 1788 construct(pointer __p) 1789 { 1790 ::new((void*)__p) _Tp(); 1791 } 1792# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1793 1794 template <class _A0> 1795 _LIBCPP_INLINE_VISIBILITY 1796 void 1797 construct(pointer __p, _A0& __a0) 1798 { 1799 ::new((void*)__p) _Tp(__a0); 1800 } 1801 template <class _A0> 1802 _LIBCPP_INLINE_VISIBILITY 1803 void 1804 construct(pointer __p, const _A0& __a0) 1805 { 1806 ::new((void*)__p) _Tp(__a0); 1807 } 1808# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1809 template <class _A0, class _A1> 1810 _LIBCPP_INLINE_VISIBILITY 1811 void 1812 construct(pointer __p, _A0& __a0, _A1& __a1) 1813 { 1814 ::new((void*)__p) _Tp(__a0, __a1); 1815 } 1816 template <class _A0, class _A1> 1817 _LIBCPP_INLINE_VISIBILITY 1818 void 1819 construct(pointer __p, const _A0& __a0, _A1& __a1) 1820 { 1821 ::new((void*)__p) _Tp(__a0, __a1); 1822 } 1823 template <class _A0, class _A1> 1824 _LIBCPP_INLINE_VISIBILITY 1825 void 1826 construct(pointer __p, _A0& __a0, const _A1& __a1) 1827 { 1828 ::new((void*)__p) _Tp(__a0, __a1); 1829 } 1830 template <class _A0, class _A1> 1831 _LIBCPP_INLINE_VISIBILITY 1832 void 1833 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1834 { 1835 ::new((void*)__p) _Tp(__a0, __a1); 1836 } 1837#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1838 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1839}; 1840 1841template <class _Tp> 1842class _LIBCPP_TEMPLATE_VIS allocator<const _Tp> 1843{ 1844public: 1845 typedef size_t size_type; 1846 typedef ptrdiff_t difference_type; 1847 typedef const _Tp* pointer; 1848 typedef const _Tp* const_pointer; 1849 typedef const _Tp& reference; 1850 typedef const _Tp& const_reference; 1851 typedef const _Tp value_type; 1852 1853 typedef true_type propagate_on_container_move_assignment; 1854 typedef true_type is_always_equal; 1855 1856 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1857 1858 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1859 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1860 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1861 {return _VSTD::addressof(__x);} 1862 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1863 { 1864 if (__n > max_size()) 1865 __throw_length_error("allocator<const T>::allocate(size_t n)" 1866 " 'n' exceeds maximum supported size"); 1867 return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp))); 1868 } 1869 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1870 {_VSTD::__libcpp_deallocate((void*)__p);} 1871 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1872 {return size_type(~0) / sizeof(_Tp);} 1873#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1874 template <class _Up, class... _Args> 1875 _LIBCPP_INLINE_VISIBILITY 1876 void 1877 construct(_Up* __p, _Args&&... __args) 1878 { 1879 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1880 } 1881#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1882 _LIBCPP_INLINE_VISIBILITY 1883 void 1884 construct(pointer __p) 1885 { 1886 ::new((void*)__p) _Tp(); 1887 } 1888# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1889 1890 template <class _A0> 1891 _LIBCPP_INLINE_VISIBILITY 1892 void 1893 construct(pointer __p, _A0& __a0) 1894 { 1895 ::new((void*)__p) _Tp(__a0); 1896 } 1897 template <class _A0> 1898 _LIBCPP_INLINE_VISIBILITY 1899 void 1900 construct(pointer __p, const _A0& __a0) 1901 { 1902 ::new((void*)__p) _Tp(__a0); 1903 } 1904# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1905 template <class _A0, class _A1> 1906 _LIBCPP_INLINE_VISIBILITY 1907 void 1908 construct(pointer __p, _A0& __a0, _A1& __a1) 1909 { 1910 ::new((void*)__p) _Tp(__a0, __a1); 1911 } 1912 template <class _A0, class _A1> 1913 _LIBCPP_INLINE_VISIBILITY 1914 void 1915 construct(pointer __p, const _A0& __a0, _A1& __a1) 1916 { 1917 ::new((void*)__p) _Tp(__a0, __a1); 1918 } 1919 template <class _A0, class _A1> 1920 _LIBCPP_INLINE_VISIBILITY 1921 void 1922 construct(pointer __p, _A0& __a0, const _A1& __a1) 1923 { 1924 ::new((void*)__p) _Tp(__a0, __a1); 1925 } 1926 template <class _A0, class _A1> 1927 _LIBCPP_INLINE_VISIBILITY 1928 void 1929 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1930 { 1931 ::new((void*)__p) _Tp(__a0, __a1); 1932 } 1933#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1934 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1935}; 1936 1937template <class _Tp, class _Up> 1938inline _LIBCPP_INLINE_VISIBILITY 1939bool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;} 1940 1941template <class _Tp, class _Up> 1942inline _LIBCPP_INLINE_VISIBILITY 1943bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;} 1944 1945template <class _OutputIterator, class _Tp> 1946class _LIBCPP_TEMPLATE_VIS raw_storage_iterator 1947 : public iterator<output_iterator_tag, 1948 _Tp, // purposefully not C++03 1949 ptrdiff_t, // purposefully not C++03 1950 _Tp*, // purposefully not C++03 1951 raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03 1952{ 1953private: 1954 _OutputIterator __x_; 1955public: 1956 _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} 1957 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;} 1958 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element) 1959 {::new(&*__x_) _Tp(__element); return *this;} 1960#if _LIBCPP_STD_VER >= 14 1961 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element) 1962 {::new(&*__x_) _Tp(_VSTD::move(__element)); return *this;} 1963#endif 1964 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;} 1965 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int) 1966 {raw_storage_iterator __t(*this); ++__x_; return __t;} 1967#if _LIBCPP_STD_VER >= 14 1968 _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; } 1969#endif 1970}; 1971 1972template <class _Tp> 1973pair<_Tp*, ptrdiff_t> 1974get_temporary_buffer(ptrdiff_t __n) _NOEXCEPT 1975{ 1976 pair<_Tp*, ptrdiff_t> __r(0, 0); 1977 const ptrdiff_t __m = (~ptrdiff_t(0) ^ 1978 ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1))) 1979 / sizeof(_Tp); 1980 if (__n > __m) 1981 __n = __m; 1982 while (__n > 0) 1983 { 1984 __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow)); 1985 if (__r.first) 1986 { 1987 __r.second = __n; 1988 break; 1989 } 1990 __n /= 2; 1991 } 1992 return __r; 1993} 1994 1995template <class _Tp> 1996inline _LIBCPP_INLINE_VISIBILITY 1997void return_temporary_buffer(_Tp* __p) _NOEXCEPT {::operator delete(__p);} 1998 1999template <class _Tp> 2000struct auto_ptr_ref 2001{ 2002 _Tp* __ptr_; 2003}; 2004 2005template<class _Tp> 2006class _LIBCPP_TEMPLATE_VIS auto_ptr 2007{ 2008private: 2009 _Tp* __ptr_; 2010public: 2011 typedef _Tp element_type; 2012 2013 _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {} 2014 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {} 2015 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw() 2016 : __ptr_(__p.release()) {} 2017 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw() 2018 {reset(__p.release()); return *this;} 2019 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw() 2020 {reset(__p.release()); return *this;} 2021 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw() 2022 {reset(__p.__ptr_); return *this;} 2023 _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;} 2024 2025 _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw() 2026 {return *__ptr_;} 2027 _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;} 2028 _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;} 2029 _LIBCPP_INLINE_VISIBILITY _Tp* release() throw() 2030 { 2031 _Tp* __t = __ptr_; 2032 __ptr_ = 0; 2033 return __t; 2034 } 2035 _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw() 2036 { 2037 if (__ptr_ != __p) 2038 delete __ptr_; 2039 __ptr_ = __p; 2040 } 2041 2042 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {} 2043 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw() 2044 {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;} 2045 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw() 2046 {return auto_ptr<_Up>(release());} 2047}; 2048 2049template <> 2050class _LIBCPP_TEMPLATE_VIS auto_ptr<void> 2051{ 2052public: 2053 typedef void element_type; 2054}; 2055 2056template <class _T1, class _T2, bool = is_same<typename remove_cv<_T1>::type, 2057 typename remove_cv<_T2>::type>::value, 2058 bool = is_empty<_T1>::value 2059 && !__libcpp_is_final<_T1>::value, 2060 bool = is_empty<_T2>::value 2061 && !__libcpp_is_final<_T2>::value 2062 > 2063struct __libcpp_compressed_pair_switch; 2064 2065template <class _T1, class _T2, bool IsSame> 2066struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, false> {enum {value = 0};}; 2067 2068template <class _T1, class _T2, bool IsSame> 2069struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, true, false> {enum {value = 1};}; 2070 2071template <class _T1, class _T2, bool IsSame> 2072struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, true> {enum {value = 2};}; 2073 2074template <class _T1, class _T2> 2075struct __libcpp_compressed_pair_switch<_T1, _T2, false, true, true> {enum {value = 3};}; 2076 2077template <class _T1, class _T2> 2078struct __libcpp_compressed_pair_switch<_T1, _T2, true, true, true> {enum {value = 1};}; 2079 2080template <class _T1, class _T2, unsigned = __libcpp_compressed_pair_switch<_T1, _T2>::value> 2081class __libcpp_compressed_pair_imp; 2082 2083template <class _T1, class _T2> 2084class __libcpp_compressed_pair_imp<_T1, _T2, 0> 2085{ 2086private: 2087 _T1 __first_; 2088 _T2 __second_; 2089public: 2090 typedef _T1 _T1_param; 2091 typedef _T2 _T2_param; 2092 2093 typedef typename remove_reference<_T1>::type& _T1_reference; 2094 typedef typename remove_reference<_T2>::type& _T2_reference; 2095 2096 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 2097 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 2098 2099 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __first_(), __second_() {} 2100 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2101 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_() {} 2102 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2103 : __first_(), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2104 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2105 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2106 2107#ifndef _LIBCPP_HAS_NO_VARIADICS 2108 2109 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2110 _LIBCPP_INLINE_VISIBILITY 2111 __libcpp_compressed_pair_imp(piecewise_construct_t, 2112 tuple<_Args1...> __first_args, 2113 tuple<_Args2...> __second_args, 2114 __tuple_indices<_I1...>, 2115 __tuple_indices<_I2...>) 2116 : __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2117 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2118 {} 2119 2120#endif // _LIBCPP_HAS_NO_VARIADICS 2121 2122 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2123 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2124 2125 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2126 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2127 2128 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2129 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2130 __is_nothrow_swappable<_T2>::value) 2131 { 2132 using _VSTD::swap; 2133 swap(__first_, __x.__first_); 2134 swap(__second_, __x.__second_); 2135 } 2136}; 2137 2138template <class _T1, class _T2> 2139class __libcpp_compressed_pair_imp<_T1, _T2, 1> 2140 : private _T1 2141{ 2142private: 2143 _T2 __second_; 2144public: 2145 typedef _T1 _T1_param; 2146 typedef _T2 _T2_param; 2147 2148 typedef _T1& _T1_reference; 2149 typedef typename remove_reference<_T2>::type& _T2_reference; 2150 2151 typedef const _T1& _T1_const_reference; 2152 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 2153 2154 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __second_() {} 2155 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2156 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_() {} 2157 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2158 : __second_(_VSTD::forward<_T2_param>(__t2)) {} 2159 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2160 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2161 2162#ifndef _LIBCPP_HAS_NO_VARIADICS 2163 2164 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2165 _LIBCPP_INLINE_VISIBILITY 2166 __libcpp_compressed_pair_imp(piecewise_construct_t, 2167 tuple<_Args1...> __first_args, 2168 tuple<_Args2...> __second_args, 2169 __tuple_indices<_I1...>, 2170 __tuple_indices<_I2...>) 2171 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2172 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2173 {} 2174 2175#endif // _LIBCPP_HAS_NO_VARIADICS 2176 2177 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2178 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2179 2180 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2181 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2182 2183 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2184 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2185 __is_nothrow_swappable<_T2>::value) 2186 { 2187 using _VSTD::swap; 2188 swap(__second_, __x.__second_); 2189 } 2190}; 2191 2192template <class _T1, class _T2> 2193class __libcpp_compressed_pair_imp<_T1, _T2, 2> 2194 : private _T2 2195{ 2196private: 2197 _T1 __first_; 2198public: 2199 typedef _T1 _T1_param; 2200 typedef _T2 _T2_param; 2201 2202 typedef typename remove_reference<_T1>::type& _T1_reference; 2203 typedef _T2& _T2_reference; 2204 2205 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 2206 typedef const _T2& _T2_const_reference; 2207 2208 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __first_() {} 2209 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2210 : __first_(_VSTD::forward<_T1_param>(__t1)) {} 2211 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2212 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_() {} 2213 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2214 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2215 is_nothrow_move_constructible<_T2>::value) 2216 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_(_VSTD::forward<_T1_param>(__t1)) {} 2217 2218#ifndef _LIBCPP_HAS_NO_VARIADICS 2219 2220 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2221 _LIBCPP_INLINE_VISIBILITY 2222 __libcpp_compressed_pair_imp(piecewise_construct_t, 2223 tuple<_Args1...> __first_args, 2224 tuple<_Args2...> __second_args, 2225 __tuple_indices<_I1...>, 2226 __tuple_indices<_I2...>) 2227 : _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...), 2228 __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...) 2229 2230 {} 2231 2232#endif // _LIBCPP_HAS_NO_VARIADICS 2233 2234 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2235 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2236 2237 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2238 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2239 2240 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2241 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2242 __is_nothrow_swappable<_T2>::value) 2243 { 2244 using _VSTD::swap; 2245 swap(__first_, __x.__first_); 2246 } 2247}; 2248 2249template <class _T1, class _T2> 2250class __libcpp_compressed_pair_imp<_T1, _T2, 3> 2251 : private _T1, 2252 private _T2 2253{ 2254public: 2255 typedef _T1 _T1_param; 2256 typedef _T2 _T2_param; 2257 2258 typedef _T1& _T1_reference; 2259 typedef _T2& _T2_reference; 2260 2261 typedef const _T1& _T1_const_reference; 2262 typedef const _T2& _T2_const_reference; 2263 2264 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2265 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2266 : _T1(_VSTD::forward<_T1_param>(__t1)) {} 2267 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2268 : _T2(_VSTD::forward<_T2_param>(__t2)) {} 2269 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2270 : _T1(_VSTD::forward<_T1_param>(__t1)), _T2(_VSTD::forward<_T2_param>(__t2)) {} 2271 2272#ifndef _LIBCPP_HAS_NO_VARIADICS 2273 2274 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2275 _LIBCPP_INLINE_VISIBILITY 2276 __libcpp_compressed_pair_imp(piecewise_construct_t, 2277 tuple<_Args1...> __first_args, 2278 tuple<_Args2...> __second_args, 2279 __tuple_indices<_I1...>, 2280 __tuple_indices<_I2...>) 2281 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2282 _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2283 {} 2284 2285#endif // _LIBCPP_HAS_NO_VARIADICS 2286 2287 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2288 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2289 2290 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2291 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2292 2293 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp&) 2294 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2295 __is_nothrow_swappable<_T2>::value) 2296 { 2297 } 2298}; 2299 2300template <class _T1, class _T2> 2301class __compressed_pair 2302 : private __libcpp_compressed_pair_imp<_T1, _T2> 2303{ 2304 typedef __libcpp_compressed_pair_imp<_T1, _T2> base; 2305public: 2306 typedef typename base::_T1_param _T1_param; 2307 typedef typename base::_T2_param _T2_param; 2308 2309 typedef typename base::_T1_reference _T1_reference; 2310 typedef typename base::_T2_reference _T2_reference; 2311 2312 typedef typename base::_T1_const_reference _T1_const_reference; 2313 typedef typename base::_T2_const_reference _T2_const_reference; 2314 2315 _LIBCPP_INLINE_VISIBILITY __compressed_pair() {} 2316 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T1_param __t1) 2317 : base(_VSTD::forward<_T1_param>(__t1)) {} 2318 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T2_param __t2) 2319 : base(_VSTD::forward<_T2_param>(__t2)) {} 2320 _LIBCPP_INLINE_VISIBILITY __compressed_pair(_T1_param __t1, _T2_param __t2) 2321 : base(_VSTD::forward<_T1_param>(__t1), _VSTD::forward<_T2_param>(__t2)) {} 2322 2323#ifndef _LIBCPP_HAS_NO_VARIADICS 2324 2325 template <class... _Args1, class... _Args2> 2326 _LIBCPP_INLINE_VISIBILITY 2327 __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args, 2328 tuple<_Args2...> __second_args) 2329 : base(__pc, _VSTD::move(__first_args), _VSTD::move(__second_args), 2330 typename __make_tuple_indices<sizeof...(_Args1)>::type(), 2331 typename __make_tuple_indices<sizeof...(_Args2) >::type()) 2332 {} 2333 2334#endif // _LIBCPP_HAS_NO_VARIADICS 2335 2336 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return base::first();} 2337 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return base::first();} 2338 2339 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return base::second();} 2340 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return base::second();} 2341 2342 _LIBCPP_INLINE_VISIBILITY void swap(__compressed_pair& __x) 2343 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2344 __is_nothrow_swappable<_T2>::value) 2345 {base::swap(__x);} 2346}; 2347 2348template <class _T1, class _T2> 2349inline _LIBCPP_INLINE_VISIBILITY 2350void 2351swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y) 2352 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2353 __is_nothrow_swappable<_T2>::value) 2354 {__x.swap(__y);} 2355 2356// __same_or_less_cv_qualified 2357 2358template <class _Ptr1, class _Ptr2, 2359 bool = is_same<typename remove_cv<typename pointer_traits<_Ptr1>::element_type>::type, 2360 typename remove_cv<typename pointer_traits<_Ptr2>::element_type>::type 2361 >::value 2362 > 2363struct __same_or_less_cv_qualified_imp 2364 : is_convertible<_Ptr1, _Ptr2> {}; 2365 2366template <class _Ptr1, class _Ptr2> 2367struct __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2, false> 2368 : false_type {}; 2369 2370template <class _Ptr1, class _Ptr2, bool = is_pointer<_Ptr1>::value || 2371 is_same<_Ptr1, _Ptr2>::value || 2372 __has_element_type<_Ptr1>::value> 2373struct __same_or_less_cv_qualified 2374 : __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2> {}; 2375 2376template <class _Ptr1, class _Ptr2> 2377struct __same_or_less_cv_qualified<_Ptr1, _Ptr2, false> 2378 : false_type {}; 2379 2380// default_delete 2381 2382template <class _Tp> 2383struct _LIBCPP_TEMPLATE_VIS default_delete 2384{ 2385#ifndef _LIBCPP_CXX03_LANG 2386 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2387#else 2388 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2389#endif 2390 template <class _Up> 2391 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up>&, 2392 typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2393 _LIBCPP_INLINE_VISIBILITY void operator() (_Tp* __ptr) const _NOEXCEPT 2394 { 2395 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2396 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type"); 2397 delete __ptr; 2398 } 2399}; 2400 2401template <class _Tp> 2402struct _LIBCPP_TEMPLATE_VIS default_delete<_Tp[]> 2403{ 2404public: 2405#ifndef _LIBCPP_CXX03_LANG 2406 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2407#else 2408 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2409#endif 2410 template <class _Up> 2411 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up[]>&, 2412 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2413 template <class _Up> 2414 _LIBCPP_INLINE_VISIBILITY 2415 void operator() (_Up* __ptr, 2416 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) const _NOEXCEPT 2417 { 2418 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2419 static_assert(!is_void<_Tp>::value, "default_delete can not delete void type"); 2420 delete [] __ptr; 2421 } 2422}; 2423 2424template <class _Tp, class _Dp = default_delete<_Tp> > 2425class _LIBCPP_TEMPLATE_VIS unique_ptr 2426{ 2427public: 2428 typedef _Tp element_type; 2429 typedef _Dp deleter_type; 2430 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2431private: 2432 __compressed_pair<pointer, deleter_type> __ptr_; 2433 2434#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2435 unique_ptr(unique_ptr&); 2436 template <class _Up, class _Ep> 2437 unique_ptr(unique_ptr<_Up, _Ep>&); 2438 unique_ptr& operator=(unique_ptr&); 2439 template <class _Up, class _Ep> 2440 unique_ptr& operator=(unique_ptr<_Up, _Ep>&); 2441#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2442 2443 struct __nat {int __for_bool_;}; 2444 2445 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2446 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2447public: 2448 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2449 : __ptr_(pointer()) 2450 { 2451 static_assert(!is_pointer<deleter_type>::value, 2452 "unique_ptr constructed with null function pointer deleter"); 2453 } 2454 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2455 : __ptr_(pointer()) 2456 { 2457 static_assert(!is_pointer<deleter_type>::value, 2458 "unique_ptr constructed with null function pointer deleter"); 2459 } 2460 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) _NOEXCEPT 2461 : __ptr_(_VSTD::move(__p)) 2462 { 2463 static_assert(!is_pointer<deleter_type>::value, 2464 "unique_ptr constructed with null function pointer deleter"); 2465 } 2466 2467#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2468 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename conditional< 2469 is_reference<deleter_type>::value, 2470 deleter_type, 2471 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2472 _NOEXCEPT 2473 : __ptr_(__p, __d) {} 2474 2475 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename remove_reference<deleter_type>::type&& __d) 2476 _NOEXCEPT 2477 : __ptr_(__p, _VSTD::move(__d)) 2478 { 2479 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2480 } 2481 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2482 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2483 template <class _Up, class _Ep> 2484 _LIBCPP_INLINE_VISIBILITY 2485 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2486 typename enable_if 2487 < 2488 !is_array<_Up>::value && 2489 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2490 is_convertible<_Ep, deleter_type>::value && 2491 ( 2492 !is_reference<deleter_type>::value || 2493 is_same<deleter_type, _Ep>::value 2494 ), 2495 __nat 2496 >::type = __nat()) _NOEXCEPT 2497 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {} 2498 2499 template <class _Up> 2500 _LIBCPP_INLINE_VISIBILITY unique_ptr(auto_ptr<_Up>&& __p, 2501 typename enable_if< 2502 is_convertible<_Up*, _Tp*>::value && 2503 is_same<_Dp, default_delete<_Tp> >::value, 2504 __nat 2505 >::type = __nat()) _NOEXCEPT 2506 : __ptr_(__p.release()) 2507 { 2508 } 2509 2510 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2511 { 2512 reset(__u.release()); 2513 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2514 return *this; 2515 } 2516 2517 template <class _Up, class _Ep> 2518 _LIBCPP_INLINE_VISIBILITY 2519 typename enable_if 2520 < 2521 !is_array<_Up>::value && 2522 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2523 is_assignable<deleter_type&, _Ep&&>::value, 2524 unique_ptr& 2525 >::type 2526 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2527 { 2528 reset(__u.release()); 2529 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2530 return *this; 2531 } 2532#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2533 2534 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2535 { 2536 return __rv<unique_ptr>(*this); 2537 } 2538 2539 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2540 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2541 2542 template <class _Up, class _Ep> 2543 _LIBCPP_INLINE_VISIBILITY 2544 typename enable_if< 2545 !is_array<_Up>::value && 2546 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2547 is_assignable<deleter_type&, _Ep&>::value, 2548 unique_ptr& 2549 >::type 2550 operator=(unique_ptr<_Up, _Ep> __u) 2551 { 2552 reset(__u.release()); 2553 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2554 return *this; 2555 } 2556 2557 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2558 : __ptr_(_VSTD::move(__p), _VSTD::move(__d)) {} 2559 2560 template <class _Up> 2561 _LIBCPP_INLINE_VISIBILITY 2562 typename enable_if< 2563 is_convertible<_Up*, _Tp*>::value && 2564 is_same<_Dp, default_delete<_Tp> >::value, 2565 unique_ptr& 2566 >::type 2567 operator=(auto_ptr<_Up> __p) 2568 {reset(__p.release()); return *this;} 2569 2570#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2571 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2572 2573 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2574 { 2575 reset(); 2576 return *this; 2577 } 2578 2579 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator*() const 2580 {return *__ptr_.first();} 2581 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT {return __ptr_.first();} 2582 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2583 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2584 {return __ptr_.second();} 2585 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2586 {return __ptr_.second();} 2587 _LIBCPP_INLINE_VISIBILITY 2588 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2589 {return __ptr_.first() != nullptr;} 2590 2591 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2592 { 2593 pointer __t = __ptr_.first(); 2594 __ptr_.first() = pointer(); 2595 return __t; 2596 } 2597 2598 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) _NOEXCEPT 2599 { 2600 pointer __tmp = __ptr_.first(); 2601 __ptr_.first() = __p; 2602 if (__tmp) 2603 __ptr_.second()(__tmp); 2604 } 2605 2606 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) _NOEXCEPT 2607 {__ptr_.swap(__u.__ptr_);} 2608}; 2609 2610template <class _Tp, class _Dp> 2611class _LIBCPP_TEMPLATE_VIS unique_ptr<_Tp[], _Dp> 2612{ 2613public: 2614 typedef _Tp element_type; 2615 typedef _Dp deleter_type; 2616 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2617private: 2618 __compressed_pair<pointer, deleter_type> __ptr_; 2619 2620#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2621 unique_ptr(unique_ptr&); 2622 template <class _Up> 2623 unique_ptr(unique_ptr<_Up>&); 2624 unique_ptr& operator=(unique_ptr&); 2625 template <class _Up> 2626 unique_ptr& operator=(unique_ptr<_Up>&); 2627#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2628 2629 struct __nat {int __for_bool_;}; 2630 2631 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2632 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2633public: 2634 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2635 : __ptr_(pointer()) 2636 { 2637 static_assert(!is_pointer<deleter_type>::value, 2638 "unique_ptr constructed with null function pointer deleter"); 2639 } 2640 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2641 : __ptr_(pointer()) 2642 { 2643 static_assert(!is_pointer<deleter_type>::value, 2644 "unique_ptr constructed with null function pointer deleter"); 2645 } 2646#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2647 template <class _Pp> 2648 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(_Pp __p, 2649 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) _NOEXCEPT 2650 : __ptr_(__p) 2651 { 2652 static_assert(!is_pointer<deleter_type>::value, 2653 "unique_ptr constructed with null function pointer deleter"); 2654 } 2655 2656 template <class _Pp> 2657 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, typename conditional< 2658 is_reference<deleter_type>::value, 2659 deleter_type, 2660 typename add_lvalue_reference<const deleter_type>::type>::type __d, 2661 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2662 _NOEXCEPT 2663 : __ptr_(__p, __d) {} 2664 2665 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename conditional< 2666 is_reference<deleter_type>::value, 2667 deleter_type, 2668 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2669 _NOEXCEPT 2670 : __ptr_(pointer(), __d) {} 2671 2672 template <class _Pp> 2673 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, 2674 typename remove_reference<deleter_type>::type&& __d, 2675 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2676 _NOEXCEPT 2677 : __ptr_(__p, _VSTD::move(__d)) 2678 { 2679 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2680 } 2681 2682 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename remove_reference<deleter_type>::type&& __d) 2683 _NOEXCEPT 2684 : __ptr_(pointer(), _VSTD::move(__d)) 2685 { 2686 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2687 } 2688 2689 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2690 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2691 2692 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2693 { 2694 reset(__u.release()); 2695 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2696 return *this; 2697 } 2698 2699 template <class _Up, class _Ep> 2700 _LIBCPP_INLINE_VISIBILITY 2701 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2702 typename enable_if 2703 < 2704 is_array<_Up>::value && 2705 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value 2706 && is_convertible<_Ep, deleter_type>::value && 2707 ( 2708 !is_reference<deleter_type>::value || 2709 is_same<deleter_type, _Ep>::value 2710 ), 2711 __nat 2712 >::type = __nat() 2713 ) _NOEXCEPT 2714 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2715 2716 2717 template <class _Up, class _Ep> 2718 _LIBCPP_INLINE_VISIBILITY 2719 typename enable_if 2720 < 2721 is_array<_Up>::value && 2722 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2723 is_assignable<deleter_type&, _Ep&&>::value, 2724 unique_ptr& 2725 >::type 2726 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2727 { 2728 reset(__u.release()); 2729 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2730 return *this; 2731 } 2732#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2733 2734 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) 2735 : __ptr_(__p) 2736 { 2737 static_assert(!is_pointer<deleter_type>::value, 2738 "unique_ptr constructed with null function pointer deleter"); 2739 } 2740 2741 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2742 : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {} 2743 2744 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, deleter_type __d) 2745 : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {} 2746 2747 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2748 { 2749 return __rv<unique_ptr>(*this); 2750 } 2751 2752 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2753 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2754 2755 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(__rv<unique_ptr> __u) 2756 { 2757 reset(__u->release()); 2758 __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter()); 2759 return *this; 2760 } 2761 2762#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2763 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2764 2765 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2766 { 2767 reset(); 2768 return *this; 2769 } 2770 2771 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator[](size_t __i) const 2772 {return __ptr_.first()[__i];} 2773 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2774 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2775 {return __ptr_.second();} 2776 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2777 {return __ptr_.second();} 2778 _LIBCPP_INLINE_VISIBILITY 2779 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2780 {return __ptr_.first() != nullptr;} 2781 2782 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2783 { 2784 pointer __t = __ptr_.first(); 2785 __ptr_.first() = pointer(); 2786 return __t; 2787 } 2788 2789 template <class _Pp> 2790 _LIBCPP_INLINE_VISIBILITY 2791 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, void>::type 2792 reset(_Pp __p) _NOEXCEPT 2793 { 2794 pointer __tmp = __ptr_.first(); 2795 __ptr_.first() = __p; 2796 if (__tmp) 2797 __ptr_.second()(__tmp); 2798 } 2799 _LIBCPP_INLINE_VISIBILITY void reset(nullptr_t = nullptr) _NOEXCEPT 2800 { 2801 pointer __tmp = __ptr_.first(); 2802 __ptr_.first() = nullptr; 2803 if (__tmp) 2804 __ptr_.second()(__tmp); 2805 } 2806 2807 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);} 2808private: 2809 2810#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2811 template <class _Up> 2812 explicit unique_ptr(_Up); 2813 template <class _Up> 2814 unique_ptr(_Up __u, 2815 typename conditional< 2816 is_reference<deleter_type>::value, 2817 deleter_type, 2818 typename add_lvalue_reference<const deleter_type>::type>::type, 2819 typename enable_if 2820 < 2821 is_convertible<_Up, pointer>::value, 2822 __nat 2823 >::type = __nat()); 2824#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2825}; 2826 2827template <class _Tp, class _Dp> 2828inline _LIBCPP_INLINE_VISIBILITY 2829typename enable_if< 2830 __is_swappable<_Dp>::value, 2831 void 2832>::type 2833swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} 2834 2835template <class _T1, class _D1, class _T2, class _D2> 2836inline _LIBCPP_INLINE_VISIBILITY 2837bool 2838operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} 2839 2840template <class _T1, class _D1, class _T2, class _D2> 2841inline _LIBCPP_INLINE_VISIBILITY 2842bool 2843operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} 2844 2845template <class _T1, class _D1, class _T2, class _D2> 2846inline _LIBCPP_INLINE_VISIBILITY 2847bool 2848operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) 2849{ 2850 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2851 typedef typename unique_ptr<_T2, _D2>::pointer _P2; 2852 typedef typename common_type<_P1, _P2>::type _Vp; 2853 return less<_Vp>()(__x.get(), __y.get()); 2854} 2855 2856template <class _T1, class _D1, class _T2, class _D2> 2857inline _LIBCPP_INLINE_VISIBILITY 2858bool 2859operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} 2860 2861template <class _T1, class _D1, class _T2, class _D2> 2862inline _LIBCPP_INLINE_VISIBILITY 2863bool 2864operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} 2865 2866template <class _T1, class _D1, class _T2, class _D2> 2867inline _LIBCPP_INLINE_VISIBILITY 2868bool 2869operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} 2870 2871template <class _T1, class _D1> 2872inline _LIBCPP_INLINE_VISIBILITY 2873bool 2874operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2875{ 2876 return !__x; 2877} 2878 2879template <class _T1, class _D1> 2880inline _LIBCPP_INLINE_VISIBILITY 2881bool 2882operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2883{ 2884 return !__x; 2885} 2886 2887template <class _T1, class _D1> 2888inline _LIBCPP_INLINE_VISIBILITY 2889bool 2890operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2891{ 2892 return static_cast<bool>(__x); 2893} 2894 2895template <class _T1, class _D1> 2896inline _LIBCPP_INLINE_VISIBILITY 2897bool 2898operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2899{ 2900 return static_cast<bool>(__x); 2901} 2902 2903template <class _T1, class _D1> 2904inline _LIBCPP_INLINE_VISIBILITY 2905bool 2906operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2907{ 2908 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2909 return less<_P1>()(__x.get(), nullptr); 2910} 2911 2912template <class _T1, class _D1> 2913inline _LIBCPP_INLINE_VISIBILITY 2914bool 2915operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2916{ 2917 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2918 return less<_P1>()(nullptr, __x.get()); 2919} 2920 2921template <class _T1, class _D1> 2922inline _LIBCPP_INLINE_VISIBILITY 2923bool 2924operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2925{ 2926 return nullptr < __x; 2927} 2928 2929template <class _T1, class _D1> 2930inline _LIBCPP_INLINE_VISIBILITY 2931bool 2932operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2933{ 2934 return __x < nullptr; 2935} 2936 2937template <class _T1, class _D1> 2938inline _LIBCPP_INLINE_VISIBILITY 2939bool 2940operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2941{ 2942 return !(nullptr < __x); 2943} 2944 2945template <class _T1, class _D1> 2946inline _LIBCPP_INLINE_VISIBILITY 2947bool 2948operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2949{ 2950 return !(__x < nullptr); 2951} 2952 2953template <class _T1, class _D1> 2954inline _LIBCPP_INLINE_VISIBILITY 2955bool 2956operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2957{ 2958 return !(__x < nullptr); 2959} 2960 2961template <class _T1, class _D1> 2962inline _LIBCPP_INLINE_VISIBILITY 2963bool 2964operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2965{ 2966 return !(nullptr < __x); 2967} 2968 2969#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2970 2971template <class _Tp, class _Dp> 2972inline _LIBCPP_INLINE_VISIBILITY 2973unique_ptr<_Tp, _Dp> 2974move(unique_ptr<_Tp, _Dp>& __t) 2975{ 2976 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t)); 2977} 2978 2979#endif 2980 2981#if _LIBCPP_STD_VER > 11 2982 2983template<class _Tp> 2984struct __unique_if 2985{ 2986 typedef unique_ptr<_Tp> __unique_single; 2987}; 2988 2989template<class _Tp> 2990struct __unique_if<_Tp[]> 2991{ 2992 typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; 2993}; 2994 2995template<class _Tp, size_t _Np> 2996struct __unique_if<_Tp[_Np]> 2997{ 2998 typedef void __unique_array_known_bound; 2999}; 3000 3001template<class _Tp, class... _Args> 3002inline _LIBCPP_INLINE_VISIBILITY 3003typename __unique_if<_Tp>::__unique_single 3004make_unique(_Args&&... __args) 3005{ 3006 return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...)); 3007} 3008 3009template<class _Tp> 3010inline _LIBCPP_INLINE_VISIBILITY 3011typename __unique_if<_Tp>::__unique_array_unknown_bound 3012make_unique(size_t __n) 3013{ 3014 typedef typename remove_extent<_Tp>::type _Up; 3015 return unique_ptr<_Tp>(new _Up[__n]()); 3016} 3017 3018template<class _Tp, class... _Args> 3019 typename __unique_if<_Tp>::__unique_array_known_bound 3020 make_unique(_Args&&...) = delete; 3021 3022#endif // _LIBCPP_STD_VER > 11 3023 3024template <class _Size> 3025inline _LIBCPP_INLINE_VISIBILITY 3026_Size 3027__loadword(const void* __p) 3028{ 3029 _Size __r; 3030 std::memcpy(&__r, __p, sizeof(__r)); 3031 return __r; 3032} 3033 3034// We use murmur2 when size_t is 32 bits, and cityhash64 when size_t 3035// is 64 bits. This is because cityhash64 uses 64bit x 64bit 3036// multiplication, which can be very slow on 32-bit systems. 3037template <class _Size, size_t = sizeof(_Size)*__CHAR_BIT__> 3038struct __murmur2_or_cityhash; 3039 3040template <class _Size> 3041struct __murmur2_or_cityhash<_Size, 32> 3042{ 3043 _Size operator()(const void* __key, _Size __len); 3044}; 3045 3046// murmur2 3047template <class _Size> 3048_Size 3049__murmur2_or_cityhash<_Size, 32>::operator()(const void* __key, _Size __len) _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 3050{ 3051 const _Size __m = 0x5bd1e995; 3052 const _Size __r = 24; 3053 _Size __h = __len; 3054 const unsigned char* __data = static_cast<const unsigned char*>(__key); 3055 for (; __len >= 4; __data += 4, __len -= 4) 3056 { 3057 _Size __k = __loadword<_Size>(__data); 3058 __k *= __m; 3059 __k ^= __k >> __r; 3060 __k *= __m; 3061 __h *= __m; 3062 __h ^= __k; 3063 } 3064 switch (__len) 3065 { 3066 case 3: 3067 __h ^= __data[2] << 16; 3068 case 2: 3069 __h ^= __data[1] << 8; 3070 case 1: 3071 __h ^= __data[0]; 3072 __h *= __m; 3073 } 3074 __h ^= __h >> 13; 3075 __h *= __m; 3076 __h ^= __h >> 15; 3077 return __h; 3078} 3079 3080template <class _Size> 3081struct __murmur2_or_cityhash<_Size, 64> 3082{ 3083 _Size operator()(const void* __key, _Size __len); 3084 3085 private: 3086 // Some primes between 2^63 and 2^64. 3087 static const _Size __k0 = 0xc3a5c85c97cb3127ULL; 3088 static const _Size __k1 = 0xb492b66fbe98f273ULL; 3089 static const _Size __k2 = 0x9ae16a3b2f90404fULL; 3090 static const _Size __k3 = 0xc949d7c7509e6557ULL; 3091 3092 static _Size __rotate(_Size __val, int __shift) { 3093 return __shift == 0 ? __val : ((__val >> __shift) | (__val << (64 - __shift))); 3094 } 3095 3096 static _Size __rotate_by_at_least_1(_Size __val, int __shift) { 3097 return (__val >> __shift) | (__val << (64 - __shift)); 3098 } 3099 3100 static _Size __shift_mix(_Size __val) { 3101 return __val ^ (__val >> 47); 3102 } 3103 3104 static _Size __hash_len_16(_Size __u, _Size __v) { 3105 const _Size __mul = 0x9ddfea08eb382d69ULL; 3106 _Size __a = (__u ^ __v) * __mul; 3107 __a ^= (__a >> 47); 3108 _Size __b = (__v ^ __a) * __mul; 3109 __b ^= (__b >> 47); 3110 __b *= __mul; 3111 return __b; 3112 } 3113 3114 static _Size __hash_len_0_to_16(const char* __s, _Size __len) { 3115 if (__len > 8) { 3116 const _Size __a = __loadword<_Size>(__s); 3117 const _Size __b = __loadword<_Size>(__s + __len - 8); 3118 return __hash_len_16(__a, __rotate_by_at_least_1(__b + __len, __len)) ^ __b; 3119 } 3120 if (__len >= 4) { 3121 const uint32_t __a = __loadword<uint32_t>(__s); 3122 const uint32_t __b = __loadword<uint32_t>(__s + __len - 4); 3123 return __hash_len_16(__len + (__a << 3), __b); 3124 } 3125 if (__len > 0) { 3126 const unsigned char __a = __s[0]; 3127 const unsigned char __b = __s[__len >> 1]; 3128 const unsigned char __c = __s[__len - 1]; 3129 const uint32_t __y = static_cast<uint32_t>(__a) + 3130 (static_cast<uint32_t>(__b) << 8); 3131 const uint32_t __z = __len + (static_cast<uint32_t>(__c) << 2); 3132 return __shift_mix(__y * __k2 ^ __z * __k3) * __k2; 3133 } 3134 return __k2; 3135 } 3136 3137 static _Size __hash_len_17_to_32(const char *__s, _Size __len) { 3138 const _Size __a = __loadword<_Size>(__s) * __k1; 3139 const _Size __b = __loadword<_Size>(__s + 8); 3140 const _Size __c = __loadword<_Size>(__s + __len - 8) * __k2; 3141 const _Size __d = __loadword<_Size>(__s + __len - 16) * __k0; 3142 return __hash_len_16(__rotate(__a - __b, 43) + __rotate(__c, 30) + __d, 3143 __a + __rotate(__b ^ __k3, 20) - __c + __len); 3144 } 3145 3146 // Return a 16-byte hash for 48 bytes. Quick and dirty. 3147 // Callers do best to use "random-looking" values for a and b. 3148 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3149 _Size __w, _Size __x, _Size __y, _Size __z, _Size __a, _Size __b) { 3150 __a += __w; 3151 __b = __rotate(__b + __a + __z, 21); 3152 const _Size __c = __a; 3153 __a += __x; 3154 __a += __y; 3155 __b += __rotate(__a, 44); 3156 return pair<_Size, _Size>(__a + __z, __b + __c); 3157 } 3158 3159 // Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty. 3160 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3161 const char* __s, _Size __a, _Size __b) { 3162 return __weak_hash_len_32_with_seeds(__loadword<_Size>(__s), 3163 __loadword<_Size>(__s + 8), 3164 __loadword<_Size>(__s + 16), 3165 __loadword<_Size>(__s + 24), 3166 __a, 3167 __b); 3168 } 3169 3170 // Return an 8-byte hash for 33 to 64 bytes. 3171 static _Size __hash_len_33_to_64(const char *__s, size_t __len) { 3172 _Size __z = __loadword<_Size>(__s + 24); 3173 _Size __a = __loadword<_Size>(__s) + 3174 (__len + __loadword<_Size>(__s + __len - 16)) * __k0; 3175 _Size __b = __rotate(__a + __z, 52); 3176 _Size __c = __rotate(__a, 37); 3177 __a += __loadword<_Size>(__s + 8); 3178 __c += __rotate(__a, 7); 3179 __a += __loadword<_Size>(__s + 16); 3180 _Size __vf = __a + __z; 3181 _Size __vs = __b + __rotate(__a, 31) + __c; 3182 __a = __loadword<_Size>(__s + 16) + __loadword<_Size>(__s + __len - 32); 3183 __z += __loadword<_Size>(__s + __len - 8); 3184 __b = __rotate(__a + __z, 52); 3185 __c = __rotate(__a, 37); 3186 __a += __loadword<_Size>(__s + __len - 24); 3187 __c += __rotate(__a, 7); 3188 __a += __loadword<_Size>(__s + __len - 16); 3189 _Size __wf = __a + __z; 3190 _Size __ws = __b + __rotate(__a, 31) + __c; 3191 _Size __r = __shift_mix((__vf + __ws) * __k2 + (__wf + __vs) * __k0); 3192 return __shift_mix(__r * __k0 + __vs) * __k2; 3193 } 3194}; 3195 3196// cityhash64 3197template <class _Size> 3198_Size 3199__murmur2_or_cityhash<_Size, 64>::operator()(const void* __key, _Size __len) _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 3200{ 3201 const char* __s = static_cast<const char*>(__key); 3202 if (__len <= 32) { 3203 if (__len <= 16) { 3204 return __hash_len_0_to_16(__s, __len); 3205 } else { 3206 return __hash_len_17_to_32(__s, __len); 3207 } 3208 } else if (__len <= 64) { 3209 return __hash_len_33_to_64(__s, __len); 3210 } 3211 3212 // For strings over 64 bytes we hash the end first, and then as we 3213 // loop we keep 56 bytes of state: v, w, x, y, and z. 3214 _Size __x = __loadword<_Size>(__s + __len - 40); 3215 _Size __y = __loadword<_Size>(__s + __len - 16) + 3216 __loadword<_Size>(__s + __len - 56); 3217 _Size __z = __hash_len_16(__loadword<_Size>(__s + __len - 48) + __len, 3218 __loadword<_Size>(__s + __len - 24)); 3219 pair<_Size, _Size> __v = __weak_hash_len_32_with_seeds(__s + __len - 64, __len, __z); 3220 pair<_Size, _Size> __w = __weak_hash_len_32_with_seeds(__s + __len - 32, __y + __k1, __x); 3221 __x = __x * __k1 + __loadword<_Size>(__s); 3222 3223 // Decrease len to the nearest multiple of 64, and operate on 64-byte chunks. 3224 __len = (__len - 1) & ~static_cast<_Size>(63); 3225 do { 3226 __x = __rotate(__x + __y + __v.first + __loadword<_Size>(__s + 8), 37) * __k1; 3227 __y = __rotate(__y + __v.second + __loadword<_Size>(__s + 48), 42) * __k1; 3228 __x ^= __w.second; 3229 __y += __v.first + __loadword<_Size>(__s + 40); 3230 __z = __rotate(__z + __w.first, 33) * __k1; 3231 __v = __weak_hash_len_32_with_seeds(__s, __v.second * __k1, __x + __w.first); 3232 __w = __weak_hash_len_32_with_seeds(__s + 32, __z + __w.second, 3233 __y + __loadword<_Size>(__s + 16)); 3234 std::swap(__z, __x); 3235 __s += 64; 3236 __len -= 64; 3237 } while (__len != 0); 3238 return __hash_len_16( 3239 __hash_len_16(__v.first, __w.first) + __shift_mix(__y) * __k1 + __z, 3240 __hash_len_16(__v.second, __w.second) + __x); 3241} 3242 3243template <class _Tp, size_t = sizeof(_Tp) / sizeof(size_t)> 3244struct __scalar_hash; 3245 3246template <class _Tp> 3247struct __scalar_hash<_Tp, 0> 3248 : public unary_function<_Tp, size_t> 3249{ 3250 _LIBCPP_INLINE_VISIBILITY 3251 size_t operator()(_Tp __v) const _NOEXCEPT 3252 { 3253 union 3254 { 3255 _Tp __t; 3256 size_t __a; 3257 } __u; 3258 __u.__a = 0; 3259 __u.__t = __v; 3260 return __u.__a; 3261 } 3262}; 3263 3264template <class _Tp> 3265struct __scalar_hash<_Tp, 1> 3266 : public unary_function<_Tp, size_t> 3267{ 3268 _LIBCPP_INLINE_VISIBILITY 3269 size_t operator()(_Tp __v) const _NOEXCEPT 3270 { 3271 union 3272 { 3273 _Tp __t; 3274 size_t __a; 3275 } __u; 3276 __u.__t = __v; 3277 return __u.__a; 3278 } 3279}; 3280 3281template <class _Tp> 3282struct __scalar_hash<_Tp, 2> 3283 : public unary_function<_Tp, size_t> 3284{ 3285 _LIBCPP_INLINE_VISIBILITY 3286 size_t operator()(_Tp __v) const _NOEXCEPT 3287 { 3288 union 3289 { 3290 _Tp __t; 3291 struct 3292 { 3293 size_t __a; 3294 size_t __b; 3295 } __s; 3296 } __u; 3297 __u.__t = __v; 3298 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3299 } 3300}; 3301 3302template <class _Tp> 3303struct __scalar_hash<_Tp, 3> 3304 : public unary_function<_Tp, size_t> 3305{ 3306 _LIBCPP_INLINE_VISIBILITY 3307 size_t operator()(_Tp __v) const _NOEXCEPT 3308 { 3309 union 3310 { 3311 _Tp __t; 3312 struct 3313 { 3314 size_t __a; 3315 size_t __b; 3316 size_t __c; 3317 } __s; 3318 } __u; 3319 __u.__t = __v; 3320 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3321 } 3322}; 3323 3324template <class _Tp> 3325struct __scalar_hash<_Tp, 4> 3326 : public unary_function<_Tp, size_t> 3327{ 3328 _LIBCPP_INLINE_VISIBILITY 3329 size_t operator()(_Tp __v) const _NOEXCEPT 3330 { 3331 union 3332 { 3333 _Tp __t; 3334 struct 3335 { 3336 size_t __a; 3337 size_t __b; 3338 size_t __c; 3339 size_t __d; 3340 } __s; 3341 } __u; 3342 __u.__t = __v; 3343 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3344 } 3345}; 3346 3347struct _PairT { 3348 size_t first; 3349 size_t second; 3350}; 3351 3352_LIBCPP_INLINE_VISIBILITY 3353inline size_t __hash_combine(size_t __lhs, size_t __rhs) _NOEXCEPT { 3354 typedef __scalar_hash<_PairT> _HashT; 3355 const _PairT __p = {__lhs, __rhs}; 3356 return _HashT()(__p); 3357} 3358 3359template<class _Tp> 3360struct _LIBCPP_TEMPLATE_VIS hash<_Tp*> 3361 : public unary_function<_Tp*, size_t> 3362{ 3363 _LIBCPP_INLINE_VISIBILITY 3364 size_t operator()(_Tp* __v) const _NOEXCEPT 3365 { 3366 union 3367 { 3368 _Tp* __t; 3369 size_t __a; 3370 } __u; 3371 __u.__t = __v; 3372 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3373 } 3374}; 3375 3376template <class _Tp, class _Dp> 3377struct _LIBCPP_TEMPLATE_VIS hash<unique_ptr<_Tp, _Dp> > 3378{ 3379 typedef unique_ptr<_Tp, _Dp> argument_type; 3380 typedef size_t result_type; 3381 _LIBCPP_INLINE_VISIBILITY 3382 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 3383 { 3384 typedef typename argument_type::pointer pointer; 3385 return hash<pointer>()(__ptr.get()); 3386 } 3387}; 3388 3389struct __destruct_n 3390{ 3391private: 3392 size_t size; 3393 3394 template <class _Tp> 3395 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT 3396 {for (size_t __i = 0; __i < size; ++__i, ++__p) __p->~_Tp();} 3397 3398 template <class _Tp> 3399 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT 3400 {} 3401 3402 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT 3403 {++size;} 3404 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT 3405 {} 3406 3407 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT 3408 {size = __s;} 3409 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT 3410 {} 3411public: 3412 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT 3413 : size(__s) {} 3414 3415 template <class _Tp> 3416 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT 3417 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3418 3419 template <class _Tp> 3420 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT 3421 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3422 3423 template <class _Tp> 3424 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT 3425 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3426}; 3427 3428template <class _Alloc> 3429class __allocator_destructor 3430{ 3431 typedef allocator_traits<_Alloc> __alloc_traits; 3432public: 3433 typedef typename __alloc_traits::pointer pointer; 3434 typedef typename __alloc_traits::size_type size_type; 3435private: 3436 _Alloc& __alloc_; 3437 size_type __s_; 3438public: 3439 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) 3440 _NOEXCEPT 3441 : __alloc_(__a), __s_(__s) {} 3442 _LIBCPP_INLINE_VISIBILITY 3443 void operator()(pointer __p) _NOEXCEPT 3444 {__alloc_traits::deallocate(__alloc_, __p, __s_);} 3445}; 3446 3447template <class _InputIterator, class _ForwardIterator> 3448_ForwardIterator 3449uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) 3450{ 3451 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3452#ifndef _LIBCPP_NO_EXCEPTIONS 3453 _ForwardIterator __s = __r; 3454 try 3455 { 3456#endif 3457 for (; __f != __l; ++__f, (void) ++__r) 3458 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3459#ifndef _LIBCPP_NO_EXCEPTIONS 3460 } 3461 catch (...) 3462 { 3463 for (; __s != __r; ++__s) 3464 __s->~value_type(); 3465 throw; 3466 } 3467#endif 3468 return __r; 3469} 3470 3471template <class _InputIterator, class _Size, class _ForwardIterator> 3472_ForwardIterator 3473uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) 3474{ 3475 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3476#ifndef _LIBCPP_NO_EXCEPTIONS 3477 _ForwardIterator __s = __r; 3478 try 3479 { 3480#endif 3481 for (; __n > 0; ++__f, (void) ++__r, (void) --__n) 3482 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3483#ifndef _LIBCPP_NO_EXCEPTIONS 3484 } 3485 catch (...) 3486 { 3487 for (; __s != __r; ++__s) 3488 __s->~value_type(); 3489 throw; 3490 } 3491#endif 3492 return __r; 3493} 3494 3495template <class _ForwardIterator, class _Tp> 3496void 3497uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) 3498{ 3499 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3500#ifndef _LIBCPP_NO_EXCEPTIONS 3501 _ForwardIterator __s = __f; 3502 try 3503 { 3504#endif 3505 for (; __f != __l; ++__f) 3506 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3507#ifndef _LIBCPP_NO_EXCEPTIONS 3508 } 3509 catch (...) 3510 { 3511 for (; __s != __f; ++__s) 3512 __s->~value_type(); 3513 throw; 3514 } 3515#endif 3516} 3517 3518template <class _ForwardIterator, class _Size, class _Tp> 3519_ForwardIterator 3520uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) 3521{ 3522 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3523#ifndef _LIBCPP_NO_EXCEPTIONS 3524 _ForwardIterator __s = __f; 3525 try 3526 { 3527#endif 3528 for (; __n > 0; ++__f, (void) --__n) 3529 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3530#ifndef _LIBCPP_NO_EXCEPTIONS 3531 } 3532 catch (...) 3533 { 3534 for (; __s != __f; ++__s) 3535 __s->~value_type(); 3536 throw; 3537 } 3538#endif 3539 return __f; 3540} 3541 3542#if _LIBCPP_STD_VER > 14 3543 3544template <class _Tp> 3545inline _LIBCPP_INLINE_VISIBILITY 3546void destroy_at(_Tp* __loc) { 3547 _LIBCPP_ASSERT(__loc, "null pointer given to destroy_at"); 3548 __loc->~_Tp(); 3549} 3550 3551template <class _ForwardIterator> 3552inline _LIBCPP_INLINE_VISIBILITY 3553void destroy(_ForwardIterator __first, _ForwardIterator __last) { 3554 for (; __first != __last; ++__first) 3555 _VSTD::destroy_at(_VSTD::addressof(*__first)); 3556} 3557 3558template <class _ForwardIterator, class _Size> 3559inline _LIBCPP_INLINE_VISIBILITY 3560_ForwardIterator destroy_n(_ForwardIterator __first, _Size __n) { 3561 for (; __n > 0; (void)++__first, --__n) 3562 _VSTD::destroy_at(_VSTD::addressof(*__first)); 3563 return __first; 3564} 3565 3566template <class _ForwardIterator> 3567inline _LIBCPP_INLINE_VISIBILITY 3568void uninitialized_default_construct(_ForwardIterator __first, _ForwardIterator __last) { 3569 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3570 auto __idx = __first; 3571#ifndef _LIBCPP_NO_EXCEPTIONS 3572 try { 3573#endif 3574 for (; __idx != __last; ++__idx) 3575 ::new((void*)_VSTD::addressof(*__idx)) _Vt; 3576#ifndef _LIBCPP_NO_EXCEPTIONS 3577 } catch (...) { 3578 _VSTD::destroy(__first, __idx); 3579 throw; 3580 } 3581#endif 3582} 3583 3584template <class _ForwardIterator, class _Size> 3585inline _LIBCPP_INLINE_VISIBILITY 3586_ForwardIterator uninitialized_default_construct_n(_ForwardIterator __first, _Size __n) { 3587 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3588 auto __idx = __first; 3589#ifndef _LIBCPP_NO_EXCEPTIONS 3590 try { 3591#endif 3592 for (; __n > 0; (void)++__idx, --__n) 3593 ::new((void*)_VSTD::addressof(*__idx)) _Vt; 3594 return __idx; 3595#ifndef _LIBCPP_NO_EXCEPTIONS 3596 } catch (...) { 3597 _VSTD::destroy(__first, __idx); 3598 throw; 3599 } 3600#endif 3601} 3602 3603 3604template <class _ForwardIterator> 3605inline _LIBCPP_INLINE_VISIBILITY 3606void uninitialized_value_construct(_ForwardIterator __first, _ForwardIterator __last) { 3607 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3608 auto __idx = __first; 3609#ifndef _LIBCPP_NO_EXCEPTIONS 3610 try { 3611#endif 3612 for (; __idx != __last; ++__idx) 3613 ::new((void*)_VSTD::addressof(*__idx)) _Vt(); 3614#ifndef _LIBCPP_NO_EXCEPTIONS 3615 } catch (...) { 3616 _VSTD::destroy(__first, __idx); 3617 throw; 3618 } 3619#endif 3620} 3621 3622template <class _ForwardIterator, class _Size> 3623inline _LIBCPP_INLINE_VISIBILITY 3624_ForwardIterator uninitialized_value_construct_n(_ForwardIterator __first, _Size __n) { 3625 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3626 auto __idx = __first; 3627#ifndef _LIBCPP_NO_EXCEPTIONS 3628 try { 3629#endif 3630 for (; __n > 0; (void)++__idx, --__n) 3631 ::new((void*)_VSTD::addressof(*__idx)) _Vt(); 3632 return __idx; 3633#ifndef _LIBCPP_NO_EXCEPTIONS 3634 } catch (...) { 3635 _VSTD::destroy(__first, __idx); 3636 throw; 3637 } 3638#endif 3639} 3640 3641 3642template <class _InputIt, class _ForwardIt> 3643inline _LIBCPP_INLINE_VISIBILITY 3644_ForwardIt uninitialized_move(_InputIt __first, _InputIt __last, _ForwardIt __first_res) { 3645 using _Vt = typename iterator_traits<_ForwardIt>::value_type; 3646 auto __idx = __first_res; 3647#ifndef _LIBCPP_NO_EXCEPTIONS 3648 try { 3649#endif 3650 for (; __first != __last; (void)++__idx, ++__first) 3651 ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first)); 3652 return __idx; 3653#ifndef _LIBCPP_NO_EXCEPTIONS 3654 } catch (...) { 3655 _VSTD::destroy(__first_res, __idx); 3656 throw; 3657 } 3658#endif 3659} 3660 3661template <class _InputIt, class _Size, class _ForwardIt> 3662inline _LIBCPP_INLINE_VISIBILITY 3663pair<_InputIt, _ForwardIt> 3664uninitialized_move_n(_InputIt __first, _Size __n, _ForwardIt __first_res) { 3665 using _Vt = typename iterator_traits<_ForwardIt>::value_type; 3666 auto __idx = __first_res; 3667#ifndef _LIBCPP_NO_EXCEPTIONS 3668 try { 3669#endif 3670 for (; __n > 0; ++__idx, (void)++__first, --__n) 3671 ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first)); 3672 return {__first, __idx}; 3673#ifndef _LIBCPP_NO_EXCEPTIONS 3674 } catch (...) { 3675 _VSTD::destroy(__first_res, __idx); 3676 throw; 3677 } 3678#endif 3679} 3680 3681 3682#endif // _LIBCPP_STD_VER > 14 3683 3684// NOTE: Relaxed and acq/rel atomics (for increment and decrement respectively) 3685// should be sufficient for thread safety. 3686// See https://llvm.org/bugs/show_bug.cgi?id=22803 3687#if defined(__clang__) && __has_builtin(__atomic_add_fetch) \ 3688 && defined(__ATOMIC_RELAXED) \ 3689 && defined(__ATOMIC_ACQ_REL) 3690# define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT 3691#elif !defined(__clang__) && defined(_GNUC_VER) && _GNUC_VER >= 407 3692# define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT 3693#endif 3694 3695template <class _Tp> 3696inline _LIBCPP_INLINE_VISIBILITY _Tp 3697__libcpp_atomic_refcount_increment(_Tp& __t) _NOEXCEPT 3698{ 3699#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS) 3700 return __atomic_add_fetch(&__t, 1, __ATOMIC_RELAXED); 3701#else 3702 return __t += 1; 3703#endif 3704} 3705 3706template <class _Tp> 3707inline _LIBCPP_INLINE_VISIBILITY _Tp 3708__libcpp_atomic_refcount_decrement(_Tp& __t) _NOEXCEPT 3709{ 3710#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS) 3711 return __atomic_add_fetch(&__t, -1, __ATOMIC_ACQ_REL); 3712#else 3713 return __t -= 1; 3714#endif 3715} 3716 3717class _LIBCPP_EXCEPTION_ABI bad_weak_ptr 3718 : public std::exception 3719{ 3720public: 3721 virtual ~bad_weak_ptr() _NOEXCEPT; 3722 virtual const char* what() const _NOEXCEPT; 3723}; 3724 3725_LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINE 3726void __throw_bad_weak_ptr() 3727{ 3728#ifndef _LIBCPP_NO_EXCEPTIONS 3729 throw bad_weak_ptr(); 3730#else 3731 _VSTD::abort(); 3732#endif 3733} 3734 3735template<class _Tp> class _LIBCPP_TEMPLATE_VIS weak_ptr; 3736 3737class _LIBCPP_TYPE_VIS __shared_count 3738{ 3739 __shared_count(const __shared_count&); 3740 __shared_count& operator=(const __shared_count&); 3741 3742protected: 3743 long __shared_owners_; 3744 virtual ~__shared_count(); 3745private: 3746 virtual void __on_zero_shared() _NOEXCEPT = 0; 3747 3748public: 3749 _LIBCPP_INLINE_VISIBILITY 3750 explicit __shared_count(long __refs = 0) _NOEXCEPT 3751 : __shared_owners_(__refs) {} 3752 3753#if defined(_LIBCPP_BUILDING_MEMORY) && \ 3754 defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS) 3755 void __add_shared() _NOEXCEPT; 3756 bool __release_shared() _NOEXCEPT; 3757#else 3758 _LIBCPP_INLINE_VISIBILITY 3759 void __add_shared() _NOEXCEPT { 3760 __libcpp_atomic_refcount_increment(__shared_owners_); 3761 } 3762 _LIBCPP_INLINE_VISIBILITY 3763 bool __release_shared() _NOEXCEPT { 3764 if (__libcpp_atomic_refcount_decrement(__shared_owners_) == -1) { 3765 __on_zero_shared(); 3766 return true; 3767 } 3768 return false; 3769 } 3770#endif 3771 _LIBCPP_INLINE_VISIBILITY 3772 long use_count() const _NOEXCEPT { 3773 return __libcpp_relaxed_load(&__shared_owners_) + 1; 3774 } 3775}; 3776 3777class _LIBCPP_TYPE_VIS __shared_weak_count 3778 : private __shared_count 3779{ 3780 long __shared_weak_owners_; 3781 3782public: 3783 _LIBCPP_INLINE_VISIBILITY 3784 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT 3785 : __shared_count(__refs), 3786 __shared_weak_owners_(__refs) {} 3787protected: 3788 virtual ~__shared_weak_count(); 3789 3790public: 3791#if defined(_LIBCPP_BUILDING_MEMORY) && \ 3792 defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS) 3793 void __add_shared() _NOEXCEPT; 3794 void __add_weak() _NOEXCEPT; 3795 void __release_shared() _NOEXCEPT; 3796#else 3797 _LIBCPP_INLINE_VISIBILITY 3798 void __add_shared() _NOEXCEPT { 3799 __shared_count::__add_shared(); 3800 } 3801 _LIBCPP_INLINE_VISIBILITY 3802 void __add_weak() _NOEXCEPT { 3803 __libcpp_atomic_refcount_increment(__shared_weak_owners_); 3804 } 3805 _LIBCPP_INLINE_VISIBILITY 3806 void __release_shared() _NOEXCEPT { 3807 if (__shared_count::__release_shared()) 3808 __release_weak(); 3809 } 3810#endif 3811 void __release_weak() _NOEXCEPT; 3812 _LIBCPP_INLINE_VISIBILITY 3813 long use_count() const _NOEXCEPT {return __shared_count::use_count();} 3814 __shared_weak_count* lock() _NOEXCEPT; 3815 3816 // Define the function out only if we build static libc++ without RTTI. 3817 // Otherwise we may break clients who need to compile their projects with 3818 // -fno-rtti and yet link against a libc++.dylib compiled 3819 // without -fno-rtti. 3820#if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC) 3821 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3822#endif 3823private: 3824 virtual void __on_zero_shared_weak() _NOEXCEPT = 0; 3825}; 3826 3827template <class _Tp, class _Dp, class _Alloc> 3828class __shared_ptr_pointer 3829 : public __shared_weak_count 3830{ 3831 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; 3832public: 3833 _LIBCPP_INLINE_VISIBILITY 3834 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) 3835 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {} 3836 3837#ifndef _LIBCPP_NO_RTTI 3838 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3839#endif 3840 3841private: 3842 virtual void __on_zero_shared() _NOEXCEPT; 3843 virtual void __on_zero_shared_weak() _NOEXCEPT; 3844}; 3845 3846#ifndef _LIBCPP_NO_RTTI 3847 3848template <class _Tp, class _Dp, class _Alloc> 3849const void* 3850__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT 3851{ 3852 return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : 0; 3853} 3854 3855#endif // _LIBCPP_NO_RTTI 3856 3857template <class _Tp, class _Dp, class _Alloc> 3858void 3859__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT 3860{ 3861 __data_.first().second()(__data_.first().first()); 3862 __data_.first().second().~_Dp(); 3863} 3864 3865template <class _Tp, class _Dp, class _Alloc> 3866void 3867__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3868{ 3869 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al; 3870 typedef allocator_traits<_Al> _ATraits; 3871 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3872 3873 _Al __a(__data_.second()); 3874 __data_.second().~_Alloc(); 3875 __a.deallocate(_PTraits::pointer_to(*this), 1); 3876} 3877 3878template <class _Tp, class _Alloc> 3879class __shared_ptr_emplace 3880 : public __shared_weak_count 3881{ 3882 __compressed_pair<_Alloc, _Tp> __data_; 3883public: 3884#ifndef _LIBCPP_HAS_NO_VARIADICS 3885 3886 _LIBCPP_INLINE_VISIBILITY 3887 __shared_ptr_emplace(_Alloc __a) 3888 : __data_(_VSTD::move(__a)) {} 3889 3890 template <class ..._Args> 3891 _LIBCPP_INLINE_VISIBILITY 3892 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) 3893 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a), 3894 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {} 3895 3896#else // _LIBCPP_HAS_NO_VARIADICS 3897 3898 _LIBCPP_INLINE_VISIBILITY 3899 __shared_ptr_emplace(_Alloc __a) 3900 : __data_(__a) {} 3901 3902 template <class _A0> 3903 _LIBCPP_INLINE_VISIBILITY 3904 __shared_ptr_emplace(_Alloc __a, _A0& __a0) 3905 : __data_(__a, _Tp(__a0)) {} 3906 3907 template <class _A0, class _A1> 3908 _LIBCPP_INLINE_VISIBILITY 3909 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) 3910 : __data_(__a, _Tp(__a0, __a1)) {} 3911 3912 template <class _A0, class _A1, class _A2> 3913 _LIBCPP_INLINE_VISIBILITY 3914 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) 3915 : __data_(__a, _Tp(__a0, __a1, __a2)) {} 3916 3917#endif // _LIBCPP_HAS_NO_VARIADICS 3918 3919private: 3920 virtual void __on_zero_shared() _NOEXCEPT; 3921 virtual void __on_zero_shared_weak() _NOEXCEPT; 3922public: 3923 _LIBCPP_INLINE_VISIBILITY 3924 _Tp* get() _NOEXCEPT {return &__data_.second();} 3925}; 3926 3927template <class _Tp, class _Alloc> 3928void 3929__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT 3930{ 3931 __data_.second().~_Tp(); 3932} 3933 3934template <class _Tp, class _Alloc> 3935void 3936__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3937{ 3938 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type _Al; 3939 typedef allocator_traits<_Al> _ATraits; 3940 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3941 _Al __a(__data_.first()); 3942 __data_.first().~_Alloc(); 3943 __a.deallocate(_PTraits::pointer_to(*this), 1); 3944} 3945 3946template<class _Tp> class _LIBCPP_TEMPLATE_VIS enable_shared_from_this; 3947 3948template<class _Tp> 3949class _LIBCPP_TEMPLATE_VIS shared_ptr 3950{ 3951public: 3952 typedef _Tp element_type; 3953 3954#if _LIBCPP_STD_VER > 14 3955 typedef weak_ptr<_Tp> weak_type; 3956#endif 3957private: 3958 element_type* __ptr_; 3959 __shared_weak_count* __cntrl_; 3960 3961 struct __nat {int __for_bool_;}; 3962public: 3963 _LIBCPP_INLINE_VISIBILITY 3964 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT; 3965 _LIBCPP_INLINE_VISIBILITY 3966 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT; 3967 template<class _Yp> 3968 explicit shared_ptr(_Yp* __p, 3969 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3970 template<class _Yp, class _Dp> 3971 shared_ptr(_Yp* __p, _Dp __d, 3972 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3973 template<class _Yp, class _Dp, class _Alloc> 3974 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 3975 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3976 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); 3977 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); 3978 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT; 3979 _LIBCPP_INLINE_VISIBILITY 3980 shared_ptr(const shared_ptr& __r) _NOEXCEPT; 3981 template<class _Yp> 3982 _LIBCPP_INLINE_VISIBILITY 3983 shared_ptr(const shared_ptr<_Yp>& __r, 3984 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()) 3985 _NOEXCEPT; 3986#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3987 _LIBCPP_INLINE_VISIBILITY 3988 shared_ptr(shared_ptr&& __r) _NOEXCEPT; 3989 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(shared_ptr<_Yp>&& __r, 3990 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()) 3991 _NOEXCEPT; 3992#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3993 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, 3994 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type= __nat()); 3995#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3996 template<class _Yp> 3997 shared_ptr(auto_ptr<_Yp>&& __r, 3998 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3999#else 4000 template<class _Yp> 4001 shared_ptr(auto_ptr<_Yp> __r, 4002 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 4003#endif 4004#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4005 template <class _Yp, class _Dp> 4006 shared_ptr(unique_ptr<_Yp, _Dp>&&, 4007 typename enable_if 4008 < 4009 !is_lvalue_reference<_Dp>::value && 4010 !is_array<_Yp>::value && 4011 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4012 __nat 4013 >::type = __nat()); 4014 template <class _Yp, class _Dp> 4015 shared_ptr(unique_ptr<_Yp, _Dp>&&, 4016 typename enable_if 4017 < 4018 is_lvalue_reference<_Dp>::value && 4019 !is_array<_Yp>::value && 4020 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4021 __nat 4022 >::type = __nat()); 4023#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4024 template <class _Yp, class _Dp> 4025 shared_ptr(unique_ptr<_Yp, _Dp>, 4026 typename enable_if 4027 < 4028 !is_lvalue_reference<_Dp>::value && 4029 !is_array<_Yp>::value && 4030 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4031 __nat 4032 >::type = __nat()); 4033 template <class _Yp, class _Dp> 4034 shared_ptr(unique_ptr<_Yp, _Dp>, 4035 typename enable_if 4036 < 4037 is_lvalue_reference<_Dp>::value && 4038 !is_array<_Yp>::value && 4039 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4040 __nat 4041 >::type = __nat()); 4042#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4043 4044 ~shared_ptr(); 4045 4046 _LIBCPP_INLINE_VISIBILITY 4047 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT; 4048 template<class _Yp> 4049 typename enable_if 4050 < 4051 is_convertible<_Yp*, element_type*>::value, 4052 shared_ptr& 4053 >::type 4054 _LIBCPP_INLINE_VISIBILITY 4055 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT; 4056#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4057 _LIBCPP_INLINE_VISIBILITY 4058 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT; 4059 template<class _Yp> 4060 typename enable_if 4061 < 4062 is_convertible<_Yp*, element_type*>::value, 4063 shared_ptr<_Tp>& 4064 >::type 4065 _LIBCPP_INLINE_VISIBILITY 4066 operator=(shared_ptr<_Yp>&& __r); 4067 template<class _Yp> 4068 _LIBCPP_INLINE_VISIBILITY 4069 typename enable_if 4070 < 4071 !is_array<_Yp>::value && 4072 is_convertible<_Yp*, element_type*>::value, 4073 shared_ptr 4074 >::type& 4075 operator=(auto_ptr<_Yp>&& __r); 4076#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4077 template<class _Yp> 4078 _LIBCPP_INLINE_VISIBILITY 4079 typename enable_if 4080 < 4081 !is_array<_Yp>::value && 4082 is_convertible<_Yp*, element_type*>::value, 4083 shared_ptr& 4084 >::type 4085 operator=(auto_ptr<_Yp> __r); 4086#endif 4087 template <class _Yp, class _Dp> 4088 typename enable_if 4089 < 4090 !is_array<_Yp>::value && 4091 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4092 shared_ptr& 4093 >::type 4094#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4095 _LIBCPP_INLINE_VISIBILITY 4096 operator=(unique_ptr<_Yp, _Dp>&& __r); 4097#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4098 _LIBCPP_INLINE_VISIBILITY 4099 operator=(unique_ptr<_Yp, _Dp> __r); 4100#endif 4101 4102 _LIBCPP_INLINE_VISIBILITY 4103 void swap(shared_ptr& __r) _NOEXCEPT; 4104 _LIBCPP_INLINE_VISIBILITY 4105 void reset() _NOEXCEPT; 4106 template<class _Yp> 4107 typename enable_if 4108 < 4109 is_convertible<_Yp*, element_type*>::value, 4110 void 4111 >::type 4112 _LIBCPP_INLINE_VISIBILITY 4113 reset(_Yp* __p); 4114 template<class _Yp, class _Dp> 4115 typename enable_if 4116 < 4117 is_convertible<_Yp*, element_type*>::value, 4118 void 4119 >::type 4120 _LIBCPP_INLINE_VISIBILITY 4121 reset(_Yp* __p, _Dp __d); 4122 template<class _Yp, class _Dp, class _Alloc> 4123 typename enable_if 4124 < 4125 is_convertible<_Yp*, element_type*>::value, 4126 void 4127 >::type 4128 _LIBCPP_INLINE_VISIBILITY 4129 reset(_Yp* __p, _Dp __d, _Alloc __a); 4130 4131 _LIBCPP_INLINE_VISIBILITY 4132 element_type* get() const _NOEXCEPT {return __ptr_;} 4133 _LIBCPP_INLINE_VISIBILITY 4134 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT 4135 {return *__ptr_;} 4136 _LIBCPP_INLINE_VISIBILITY 4137 element_type* operator->() const _NOEXCEPT {return __ptr_;} 4138 _LIBCPP_INLINE_VISIBILITY 4139 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;} 4140 _LIBCPP_INLINE_VISIBILITY 4141 bool unique() const _NOEXCEPT {return use_count() == 1;} 4142 _LIBCPP_INLINE_VISIBILITY 4143 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;} 4144 template <class _Up> 4145 _LIBCPP_INLINE_VISIBILITY 4146 bool owner_before(shared_ptr<_Up> const& __p) const 4147 {return __cntrl_ < __p.__cntrl_;} 4148 template <class _Up> 4149 _LIBCPP_INLINE_VISIBILITY 4150 bool owner_before(weak_ptr<_Up> const& __p) const 4151 {return __cntrl_ < __p.__cntrl_;} 4152 _LIBCPP_INLINE_VISIBILITY 4153 bool 4154 __owner_equivalent(const shared_ptr& __p) const 4155 {return __cntrl_ == __p.__cntrl_;} 4156 4157#ifndef _LIBCPP_NO_RTTI 4158 template <class _Dp> 4159 _LIBCPP_INLINE_VISIBILITY 4160 _Dp* __get_deleter() const _NOEXCEPT 4161 {return (_Dp*)(__cntrl_ ? __cntrl_->__get_deleter(typeid(_Dp)) : 0);} 4162#endif // _LIBCPP_NO_RTTI 4163 4164#ifndef _LIBCPP_HAS_NO_VARIADICS 4165 4166 template<class ..._Args> 4167 static 4168 shared_ptr<_Tp> 4169 make_shared(_Args&& ...__args); 4170 4171 template<class _Alloc, class ..._Args> 4172 static 4173 shared_ptr<_Tp> 4174 allocate_shared(const _Alloc& __a, _Args&& ...__args); 4175 4176#else // _LIBCPP_HAS_NO_VARIADICS 4177 4178 static shared_ptr<_Tp> make_shared(); 4179 4180 template<class _A0> 4181 static shared_ptr<_Tp> make_shared(_A0&); 4182 4183 template<class _A0, class _A1> 4184 static shared_ptr<_Tp> make_shared(_A0&, _A1&); 4185 4186 template<class _A0, class _A1, class _A2> 4187 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); 4188 4189 template<class _Alloc> 4190 static shared_ptr<_Tp> 4191 allocate_shared(const _Alloc& __a); 4192 4193 template<class _Alloc, class _A0> 4194 static shared_ptr<_Tp> 4195 allocate_shared(const _Alloc& __a, _A0& __a0); 4196 4197 template<class _Alloc, class _A0, class _A1> 4198 static shared_ptr<_Tp> 4199 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); 4200 4201 template<class _Alloc, class _A0, class _A1, class _A2> 4202 static shared_ptr<_Tp> 4203 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); 4204 4205#endif // _LIBCPP_HAS_NO_VARIADICS 4206 4207private: 4208 4209 template <class _Yp, class _OrigPtr> 4210 _LIBCPP_INLINE_VISIBILITY 4211 void 4212 __enable_weak_this(const enable_shared_from_this<_Yp>* __e, 4213 _OrigPtr* __ptr) _NOEXCEPT 4214 { 4215 typedef typename remove_cv<_Yp>::type _RawYp; 4216 if (__e && __e->__weak_this_.expired()) 4217 { 4218 __e->__weak_this_ = shared_ptr<_RawYp>(*this, 4219 const_cast<_RawYp*>(static_cast<const _Yp*>(__ptr))); 4220 } 4221 } 4222 4223 _LIBCPP_INLINE_VISIBILITY 4224 void __enable_weak_this(const volatile void*, const volatile void*) _NOEXCEPT {} 4225 4226 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr; 4227 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr; 4228}; 4229 4230template<class _Tp> 4231inline 4232_LIBCPP_CONSTEXPR 4233shared_ptr<_Tp>::shared_ptr() _NOEXCEPT 4234 : __ptr_(0), 4235 __cntrl_(0) 4236{ 4237} 4238 4239template<class _Tp> 4240inline 4241_LIBCPP_CONSTEXPR 4242shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT 4243 : __ptr_(0), 4244 __cntrl_(0) 4245{ 4246} 4247 4248template<class _Tp> 4249template<class _Yp> 4250shared_ptr<_Tp>::shared_ptr(_Yp* __p, 4251 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4252 : __ptr_(__p) 4253{ 4254 unique_ptr<_Yp> __hold(__p); 4255 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4256 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), allocator<_Yp>()); 4257 __hold.release(); 4258 __enable_weak_this(__p, __p); 4259} 4260 4261template<class _Tp> 4262template<class _Yp, class _Dp> 4263shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, 4264 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4265 : __ptr_(__p) 4266{ 4267#ifndef _LIBCPP_NO_EXCEPTIONS 4268 try 4269 { 4270#endif // _LIBCPP_NO_EXCEPTIONS 4271 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4272 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Yp>()); 4273 __enable_weak_this(__p, __p); 4274#ifndef _LIBCPP_NO_EXCEPTIONS 4275 } 4276 catch (...) 4277 { 4278 __d(__p); 4279 throw; 4280 } 4281#endif // _LIBCPP_NO_EXCEPTIONS 4282} 4283 4284template<class _Tp> 4285template<class _Dp> 4286shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) 4287 : __ptr_(0) 4288{ 4289#ifndef _LIBCPP_NO_EXCEPTIONS 4290 try 4291 { 4292#endif // _LIBCPP_NO_EXCEPTIONS 4293 typedef __shared_ptr_pointer<nullptr_t, _Dp, allocator<_Tp> > _CntrlBlk; 4294 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Tp>()); 4295#ifndef _LIBCPP_NO_EXCEPTIONS 4296 } 4297 catch (...) 4298 { 4299 __d(__p); 4300 throw; 4301 } 4302#endif // _LIBCPP_NO_EXCEPTIONS 4303} 4304 4305template<class _Tp> 4306template<class _Yp, class _Dp, class _Alloc> 4307shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 4308 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4309 : __ptr_(__p) 4310{ 4311#ifndef _LIBCPP_NO_EXCEPTIONS 4312 try 4313 { 4314#endif // _LIBCPP_NO_EXCEPTIONS 4315 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; 4316 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4317 typedef __allocator_destructor<_A2> _D2; 4318 _A2 __a2(__a); 4319 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4320 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4321 _CntrlBlk(__p, __d, __a); 4322 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4323 __enable_weak_this(__p, __p); 4324#ifndef _LIBCPP_NO_EXCEPTIONS 4325 } 4326 catch (...) 4327 { 4328 __d(__p); 4329 throw; 4330 } 4331#endif // _LIBCPP_NO_EXCEPTIONS 4332} 4333 4334template<class _Tp> 4335template<class _Dp, class _Alloc> 4336shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) 4337 : __ptr_(0) 4338{ 4339#ifndef _LIBCPP_NO_EXCEPTIONS 4340 try 4341 { 4342#endif // _LIBCPP_NO_EXCEPTIONS 4343 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; 4344 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4345 typedef __allocator_destructor<_A2> _D2; 4346 _A2 __a2(__a); 4347 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4348 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4349 _CntrlBlk(__p, __d, __a); 4350 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4351#ifndef _LIBCPP_NO_EXCEPTIONS 4352 } 4353 catch (...) 4354 { 4355 __d(__p); 4356 throw; 4357 } 4358#endif // _LIBCPP_NO_EXCEPTIONS 4359} 4360 4361template<class _Tp> 4362template<class _Yp> 4363inline 4364shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT 4365 : __ptr_(__p), 4366 __cntrl_(__r.__cntrl_) 4367{ 4368 if (__cntrl_) 4369 __cntrl_->__add_shared(); 4370} 4371 4372template<class _Tp> 4373inline 4374shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT 4375 : __ptr_(__r.__ptr_), 4376 __cntrl_(__r.__cntrl_) 4377{ 4378 if (__cntrl_) 4379 __cntrl_->__add_shared(); 4380} 4381 4382template<class _Tp> 4383template<class _Yp> 4384inline 4385shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, 4386 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4387 _NOEXCEPT 4388 : __ptr_(__r.__ptr_), 4389 __cntrl_(__r.__cntrl_) 4390{ 4391 if (__cntrl_) 4392 __cntrl_->__add_shared(); 4393} 4394 4395#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4396 4397template<class _Tp> 4398inline 4399shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT 4400 : __ptr_(__r.__ptr_), 4401 __cntrl_(__r.__cntrl_) 4402{ 4403 __r.__ptr_ = 0; 4404 __r.__cntrl_ = 0; 4405} 4406 4407template<class _Tp> 4408template<class _Yp> 4409inline 4410shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, 4411 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4412 _NOEXCEPT 4413 : __ptr_(__r.__ptr_), 4414 __cntrl_(__r.__cntrl_) 4415{ 4416 __r.__ptr_ = 0; 4417 __r.__cntrl_ = 0; 4418} 4419 4420#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4421 4422template<class _Tp> 4423template<class _Yp> 4424#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4425shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r, 4426#else 4427shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r, 4428#endif 4429 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4430 : __ptr_(__r.get()) 4431{ 4432 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4433 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); 4434 __enable_weak_this(__r.get(), __r.get()); 4435 __r.release(); 4436} 4437 4438template<class _Tp> 4439template <class _Yp, class _Dp> 4440#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4441shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4442#else 4443shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4444#endif 4445 typename enable_if 4446 < 4447 !is_lvalue_reference<_Dp>::value && 4448 !is_array<_Yp>::value && 4449 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4450 __nat 4451 >::type) 4452 : __ptr_(__r.get()) 4453{ 4454#if _LIBCPP_STD_VER > 11 4455 if (__ptr_ == nullptr) 4456 __cntrl_ = nullptr; 4457 else 4458#endif 4459 { 4460 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4461 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), allocator<_Yp>()); 4462 __enable_weak_this(__r.get(), __r.get()); 4463 } 4464 __r.release(); 4465} 4466 4467template<class _Tp> 4468template <class _Yp, class _Dp> 4469#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4470shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4471#else 4472shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4473#endif 4474 typename enable_if 4475 < 4476 is_lvalue_reference<_Dp>::value && 4477 !is_array<_Yp>::value && 4478 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4479 __nat 4480 >::type) 4481 : __ptr_(__r.get()) 4482{ 4483#if _LIBCPP_STD_VER > 11 4484 if (__ptr_ == nullptr) 4485 __cntrl_ = nullptr; 4486 else 4487#endif 4488 { 4489 typedef __shared_ptr_pointer<_Yp*, 4490 reference_wrapper<typename remove_reference<_Dp>::type>, 4491 allocator<_Yp> > _CntrlBlk; 4492 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), allocator<_Yp>()); 4493 __enable_weak_this(__r.get(), __r.get()); 4494 } 4495 __r.release(); 4496} 4497 4498#ifndef _LIBCPP_HAS_NO_VARIADICS 4499 4500template<class _Tp> 4501template<class ..._Args> 4502shared_ptr<_Tp> 4503shared_ptr<_Tp>::make_shared(_Args&& ...__args) 4504{ 4505 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4506 typedef allocator<_CntrlBlk> _A2; 4507 typedef __allocator_destructor<_A2> _D2; 4508 _A2 __a2; 4509 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4510 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...); 4511 shared_ptr<_Tp> __r; 4512 __r.__ptr_ = __hold2.get()->get(); 4513 __r.__cntrl_ = __hold2.release(); 4514 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4515 return __r; 4516} 4517 4518template<class _Tp> 4519template<class _Alloc, class ..._Args> 4520shared_ptr<_Tp> 4521shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) 4522{ 4523 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4524 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4525 typedef __allocator_destructor<_A2> _D2; 4526 _A2 __a2(__a); 4527 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4528 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4529 _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...); 4530 shared_ptr<_Tp> __r; 4531 __r.__ptr_ = __hold2.get()->get(); 4532 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4533 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4534 return __r; 4535} 4536 4537#else // _LIBCPP_HAS_NO_VARIADICS 4538 4539template<class _Tp> 4540shared_ptr<_Tp> 4541shared_ptr<_Tp>::make_shared() 4542{ 4543 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4544 typedef allocator<_CntrlBlk> _Alloc2; 4545 typedef __allocator_destructor<_Alloc2> _D2; 4546 _Alloc2 __alloc2; 4547 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4548 ::new(__hold2.get()) _CntrlBlk(__alloc2); 4549 shared_ptr<_Tp> __r; 4550 __r.__ptr_ = __hold2.get()->get(); 4551 __r.__cntrl_ = __hold2.release(); 4552 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4553 return __r; 4554} 4555 4556template<class _Tp> 4557template<class _A0> 4558shared_ptr<_Tp> 4559shared_ptr<_Tp>::make_shared(_A0& __a0) 4560{ 4561 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4562 typedef allocator<_CntrlBlk> _Alloc2; 4563 typedef __allocator_destructor<_Alloc2> _D2; 4564 _Alloc2 __alloc2; 4565 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4566 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); 4567 shared_ptr<_Tp> __r; 4568 __r.__ptr_ = __hold2.get()->get(); 4569 __r.__cntrl_ = __hold2.release(); 4570 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4571 return __r; 4572} 4573 4574template<class _Tp> 4575template<class _A0, class _A1> 4576shared_ptr<_Tp> 4577shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) 4578{ 4579 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4580 typedef allocator<_CntrlBlk> _Alloc2; 4581 typedef __allocator_destructor<_Alloc2> _D2; 4582 _Alloc2 __alloc2; 4583 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4584 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); 4585 shared_ptr<_Tp> __r; 4586 __r.__ptr_ = __hold2.get()->get(); 4587 __r.__cntrl_ = __hold2.release(); 4588 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4589 return __r; 4590} 4591 4592template<class _Tp> 4593template<class _A0, class _A1, class _A2> 4594shared_ptr<_Tp> 4595shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4596{ 4597 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4598 typedef allocator<_CntrlBlk> _Alloc2; 4599 typedef __allocator_destructor<_Alloc2> _D2; 4600 _Alloc2 __alloc2; 4601 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4602 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); 4603 shared_ptr<_Tp> __r; 4604 __r.__ptr_ = __hold2.get()->get(); 4605 __r.__cntrl_ = __hold2.release(); 4606 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4607 return __r; 4608} 4609 4610template<class _Tp> 4611template<class _Alloc> 4612shared_ptr<_Tp> 4613shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) 4614{ 4615 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4616 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4617 typedef __allocator_destructor<_Alloc2> _D2; 4618 _Alloc2 __alloc2(__a); 4619 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4620 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4621 _CntrlBlk(__a); 4622 shared_ptr<_Tp> __r; 4623 __r.__ptr_ = __hold2.get()->get(); 4624 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4625 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4626 return __r; 4627} 4628 4629template<class _Tp> 4630template<class _Alloc, class _A0> 4631shared_ptr<_Tp> 4632shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) 4633{ 4634 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4635 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4636 typedef __allocator_destructor<_Alloc2> _D2; 4637 _Alloc2 __alloc2(__a); 4638 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4639 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4640 _CntrlBlk(__a, __a0); 4641 shared_ptr<_Tp> __r; 4642 __r.__ptr_ = __hold2.get()->get(); 4643 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4644 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4645 return __r; 4646} 4647 4648template<class _Tp> 4649template<class _Alloc, class _A0, class _A1> 4650shared_ptr<_Tp> 4651shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4652{ 4653 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4654 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4655 typedef __allocator_destructor<_Alloc2> _D2; 4656 _Alloc2 __alloc2(__a); 4657 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4658 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4659 _CntrlBlk(__a, __a0, __a1); 4660 shared_ptr<_Tp> __r; 4661 __r.__ptr_ = __hold2.get()->get(); 4662 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4663 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4664 return __r; 4665} 4666 4667template<class _Tp> 4668template<class _Alloc, class _A0, class _A1, class _A2> 4669shared_ptr<_Tp> 4670shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4671{ 4672 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4673 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4674 typedef __allocator_destructor<_Alloc2> _D2; 4675 _Alloc2 __alloc2(__a); 4676 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4677 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4678 _CntrlBlk(__a, __a0, __a1, __a2); 4679 shared_ptr<_Tp> __r; 4680 __r.__ptr_ = __hold2.get()->get(); 4681 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4682 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4683 return __r; 4684} 4685 4686#endif // _LIBCPP_HAS_NO_VARIADICS 4687 4688template<class _Tp> 4689shared_ptr<_Tp>::~shared_ptr() 4690{ 4691 if (__cntrl_) 4692 __cntrl_->__release_shared(); 4693} 4694 4695template<class _Tp> 4696inline 4697shared_ptr<_Tp>& 4698shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT 4699{ 4700 shared_ptr(__r).swap(*this); 4701 return *this; 4702} 4703 4704template<class _Tp> 4705template<class _Yp> 4706inline 4707typename enable_if 4708< 4709 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4710 shared_ptr<_Tp>& 4711>::type 4712shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT 4713{ 4714 shared_ptr(__r).swap(*this); 4715 return *this; 4716} 4717 4718#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4719 4720template<class _Tp> 4721inline 4722shared_ptr<_Tp>& 4723shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT 4724{ 4725 shared_ptr(_VSTD::move(__r)).swap(*this); 4726 return *this; 4727} 4728 4729template<class _Tp> 4730template<class _Yp> 4731inline 4732typename enable_if 4733< 4734 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4735 shared_ptr<_Tp>& 4736>::type 4737shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) 4738{ 4739 shared_ptr(_VSTD::move(__r)).swap(*this); 4740 return *this; 4741} 4742 4743template<class _Tp> 4744template<class _Yp> 4745inline 4746typename enable_if 4747< 4748 !is_array<_Yp>::value && 4749 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4750 shared_ptr<_Tp> 4751>::type& 4752shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) 4753{ 4754 shared_ptr(_VSTD::move(__r)).swap(*this); 4755 return *this; 4756} 4757 4758template<class _Tp> 4759template <class _Yp, class _Dp> 4760inline 4761typename enable_if 4762< 4763 !is_array<_Yp>::value && 4764 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, 4765 typename shared_ptr<_Tp>::element_type*>::value, 4766 shared_ptr<_Tp>& 4767>::type 4768shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) 4769{ 4770 shared_ptr(_VSTD::move(__r)).swap(*this); 4771 return *this; 4772} 4773 4774#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4775 4776template<class _Tp> 4777template<class _Yp> 4778inline _LIBCPP_INLINE_VISIBILITY 4779typename enable_if 4780< 4781 !is_array<_Yp>::value && 4782 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4783 shared_ptr<_Tp>& 4784>::type 4785shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) 4786{ 4787 shared_ptr(__r).swap(*this); 4788 return *this; 4789} 4790 4791template<class _Tp> 4792template <class _Yp, class _Dp> 4793inline _LIBCPP_INLINE_VISIBILITY 4794typename enable_if 4795< 4796 !is_array<_Yp>::value && 4797 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, 4798 typename shared_ptr<_Tp>::element_type*>::value, 4799 shared_ptr<_Tp>& 4800>::type 4801shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) 4802{ 4803 shared_ptr(_VSTD::move(__r)).swap(*this); 4804 return *this; 4805} 4806 4807#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4808 4809template<class _Tp> 4810inline 4811void 4812shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT 4813{ 4814 _VSTD::swap(__ptr_, __r.__ptr_); 4815 _VSTD::swap(__cntrl_, __r.__cntrl_); 4816} 4817 4818template<class _Tp> 4819inline 4820void 4821shared_ptr<_Tp>::reset() _NOEXCEPT 4822{ 4823 shared_ptr().swap(*this); 4824} 4825 4826template<class _Tp> 4827template<class _Yp> 4828inline 4829typename enable_if 4830< 4831 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4832 void 4833>::type 4834shared_ptr<_Tp>::reset(_Yp* __p) 4835{ 4836 shared_ptr(__p).swap(*this); 4837} 4838 4839template<class _Tp> 4840template<class _Yp, class _Dp> 4841inline 4842typename enable_if 4843< 4844 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4845 void 4846>::type 4847shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) 4848{ 4849 shared_ptr(__p, __d).swap(*this); 4850} 4851 4852template<class _Tp> 4853template<class _Yp, class _Dp, class _Alloc> 4854inline 4855typename enable_if 4856< 4857 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4858 void 4859>::type 4860shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) 4861{ 4862 shared_ptr(__p, __d, __a).swap(*this); 4863} 4864 4865#ifndef _LIBCPP_HAS_NO_VARIADICS 4866 4867template<class _Tp, class ..._Args> 4868inline _LIBCPP_INLINE_VISIBILITY 4869typename enable_if 4870< 4871 !is_array<_Tp>::value, 4872 shared_ptr<_Tp> 4873>::type 4874make_shared(_Args&& ...__args) 4875{ 4876 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...); 4877} 4878 4879template<class _Tp, class _Alloc, class ..._Args> 4880inline _LIBCPP_INLINE_VISIBILITY 4881typename enable_if 4882< 4883 !is_array<_Tp>::value, 4884 shared_ptr<_Tp> 4885>::type 4886allocate_shared(const _Alloc& __a, _Args&& ...__args) 4887{ 4888 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...); 4889} 4890 4891#else // _LIBCPP_HAS_NO_VARIADICS 4892 4893template<class _Tp> 4894inline _LIBCPP_INLINE_VISIBILITY 4895shared_ptr<_Tp> 4896make_shared() 4897{ 4898 return shared_ptr<_Tp>::make_shared(); 4899} 4900 4901template<class _Tp, class _A0> 4902inline _LIBCPP_INLINE_VISIBILITY 4903shared_ptr<_Tp> 4904make_shared(_A0& __a0) 4905{ 4906 return shared_ptr<_Tp>::make_shared(__a0); 4907} 4908 4909template<class _Tp, class _A0, class _A1> 4910inline _LIBCPP_INLINE_VISIBILITY 4911shared_ptr<_Tp> 4912make_shared(_A0& __a0, _A1& __a1) 4913{ 4914 return shared_ptr<_Tp>::make_shared(__a0, __a1); 4915} 4916 4917template<class _Tp, class _A0, class _A1, class _A2> 4918inline _LIBCPP_INLINE_VISIBILITY 4919shared_ptr<_Tp> 4920make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4921{ 4922 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); 4923} 4924 4925template<class _Tp, class _Alloc> 4926inline _LIBCPP_INLINE_VISIBILITY 4927shared_ptr<_Tp> 4928allocate_shared(const _Alloc& __a) 4929{ 4930 return shared_ptr<_Tp>::allocate_shared(__a); 4931} 4932 4933template<class _Tp, class _Alloc, class _A0> 4934inline _LIBCPP_INLINE_VISIBILITY 4935shared_ptr<_Tp> 4936allocate_shared(const _Alloc& __a, _A0& __a0) 4937{ 4938 return shared_ptr<_Tp>::allocate_shared(__a, __a0); 4939} 4940 4941template<class _Tp, class _Alloc, class _A0, class _A1> 4942inline _LIBCPP_INLINE_VISIBILITY 4943shared_ptr<_Tp> 4944allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4945{ 4946 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); 4947} 4948 4949template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> 4950inline _LIBCPP_INLINE_VISIBILITY 4951shared_ptr<_Tp> 4952allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4953{ 4954 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); 4955} 4956 4957#endif // _LIBCPP_HAS_NO_VARIADICS 4958 4959template<class _Tp, class _Up> 4960inline _LIBCPP_INLINE_VISIBILITY 4961bool 4962operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4963{ 4964 return __x.get() == __y.get(); 4965} 4966 4967template<class _Tp, class _Up> 4968inline _LIBCPP_INLINE_VISIBILITY 4969bool 4970operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4971{ 4972 return !(__x == __y); 4973} 4974 4975template<class _Tp, class _Up> 4976inline _LIBCPP_INLINE_VISIBILITY 4977bool 4978operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4979{ 4980 typedef typename common_type<_Tp*, _Up*>::type _Vp; 4981 return less<_Vp>()(__x.get(), __y.get()); 4982} 4983 4984template<class _Tp, class _Up> 4985inline _LIBCPP_INLINE_VISIBILITY 4986bool 4987operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4988{ 4989 return __y < __x; 4990} 4991 4992template<class _Tp, class _Up> 4993inline _LIBCPP_INLINE_VISIBILITY 4994bool 4995operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4996{ 4997 return !(__y < __x); 4998} 4999 5000template<class _Tp, class _Up> 5001inline _LIBCPP_INLINE_VISIBILITY 5002bool 5003operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 5004{ 5005 return !(__x < __y); 5006} 5007 5008template<class _Tp> 5009inline _LIBCPP_INLINE_VISIBILITY 5010bool 5011operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 5012{ 5013 return !__x; 5014} 5015 5016template<class _Tp> 5017inline _LIBCPP_INLINE_VISIBILITY 5018bool 5019operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 5020{ 5021 return !__x; 5022} 5023 5024template<class _Tp> 5025inline _LIBCPP_INLINE_VISIBILITY 5026bool 5027operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 5028{ 5029 return static_cast<bool>(__x); 5030} 5031 5032template<class _Tp> 5033inline _LIBCPP_INLINE_VISIBILITY 5034bool 5035operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 5036{ 5037 return static_cast<bool>(__x); 5038} 5039 5040template<class _Tp> 5041inline _LIBCPP_INLINE_VISIBILITY 5042bool 5043operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 5044{ 5045 return less<_Tp*>()(__x.get(), nullptr); 5046} 5047 5048template<class _Tp> 5049inline _LIBCPP_INLINE_VISIBILITY 5050bool 5051operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 5052{ 5053 return less<_Tp*>()(nullptr, __x.get()); 5054} 5055 5056template<class _Tp> 5057inline _LIBCPP_INLINE_VISIBILITY 5058bool 5059operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 5060{ 5061 return nullptr < __x; 5062} 5063 5064template<class _Tp> 5065inline _LIBCPP_INLINE_VISIBILITY 5066bool 5067operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 5068{ 5069 return __x < nullptr; 5070} 5071 5072template<class _Tp> 5073inline _LIBCPP_INLINE_VISIBILITY 5074bool 5075operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 5076{ 5077 return !(nullptr < __x); 5078} 5079 5080template<class _Tp> 5081inline _LIBCPP_INLINE_VISIBILITY 5082bool 5083operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 5084{ 5085 return !(__x < nullptr); 5086} 5087 5088template<class _Tp> 5089inline _LIBCPP_INLINE_VISIBILITY 5090bool 5091operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 5092{ 5093 return !(__x < nullptr); 5094} 5095 5096template<class _Tp> 5097inline _LIBCPP_INLINE_VISIBILITY 5098bool 5099operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 5100{ 5101 return !(nullptr < __x); 5102} 5103 5104template<class _Tp> 5105inline _LIBCPP_INLINE_VISIBILITY 5106void 5107swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT 5108{ 5109 __x.swap(__y); 5110} 5111 5112template<class _Tp, class _Up> 5113inline _LIBCPP_INLINE_VISIBILITY 5114typename enable_if 5115< 5116 !is_array<_Tp>::value && !is_array<_Up>::value, 5117 shared_ptr<_Tp> 5118>::type 5119static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 5120{ 5121 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); 5122} 5123 5124template<class _Tp, class _Up> 5125inline _LIBCPP_INLINE_VISIBILITY 5126typename enable_if 5127< 5128 !is_array<_Tp>::value && !is_array<_Up>::value, 5129 shared_ptr<_Tp> 5130>::type 5131dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 5132{ 5133 _Tp* __p = dynamic_cast<_Tp*>(__r.get()); 5134 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); 5135} 5136 5137template<class _Tp, class _Up> 5138typename enable_if 5139< 5140 is_array<_Tp>::value == is_array<_Up>::value, 5141 shared_ptr<_Tp> 5142>::type 5143const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 5144{ 5145 typedef typename remove_extent<_Tp>::type _RTp; 5146 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get())); 5147} 5148 5149#ifndef _LIBCPP_NO_RTTI 5150 5151template<class _Dp, class _Tp> 5152inline _LIBCPP_INLINE_VISIBILITY 5153_Dp* 5154get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT 5155{ 5156 return __p.template __get_deleter<_Dp>(); 5157} 5158 5159#endif // _LIBCPP_NO_RTTI 5160 5161template<class _Tp> 5162class _LIBCPP_TEMPLATE_VIS weak_ptr 5163{ 5164public: 5165 typedef _Tp element_type; 5166private: 5167 element_type* __ptr_; 5168 __shared_weak_count* __cntrl_; 5169 5170public: 5171 _LIBCPP_INLINE_VISIBILITY 5172 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT; 5173 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r, 5174 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 5175 _NOEXCEPT; 5176 _LIBCPP_INLINE_VISIBILITY 5177 weak_ptr(weak_ptr const& __r) _NOEXCEPT; 5178 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r, 5179 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 5180 _NOEXCEPT; 5181 5182#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5183 _LIBCPP_INLINE_VISIBILITY 5184 weak_ptr(weak_ptr&& __r) _NOEXCEPT; 5185 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r, 5186 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 5187 _NOEXCEPT; 5188#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5189 ~weak_ptr(); 5190 5191 _LIBCPP_INLINE_VISIBILITY 5192 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT; 5193 template<class _Yp> 5194 typename enable_if 5195 < 5196 is_convertible<_Yp*, element_type*>::value, 5197 weak_ptr& 5198 >::type 5199 _LIBCPP_INLINE_VISIBILITY 5200 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT; 5201 5202#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5203 5204 _LIBCPP_INLINE_VISIBILITY 5205 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT; 5206 template<class _Yp> 5207 typename enable_if 5208 < 5209 is_convertible<_Yp*, element_type*>::value, 5210 weak_ptr& 5211 >::type 5212 _LIBCPP_INLINE_VISIBILITY 5213 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT; 5214 5215#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5216 5217 template<class _Yp> 5218 typename enable_if 5219 < 5220 is_convertible<_Yp*, element_type*>::value, 5221 weak_ptr& 5222 >::type 5223 _LIBCPP_INLINE_VISIBILITY 5224 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT; 5225 5226 _LIBCPP_INLINE_VISIBILITY 5227 void swap(weak_ptr& __r) _NOEXCEPT; 5228 _LIBCPP_INLINE_VISIBILITY 5229 void reset() _NOEXCEPT; 5230 5231 _LIBCPP_INLINE_VISIBILITY 5232 long use_count() const _NOEXCEPT 5233 {return __cntrl_ ? __cntrl_->use_count() : 0;} 5234 _LIBCPP_INLINE_VISIBILITY 5235 bool expired() const _NOEXCEPT 5236 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} 5237 shared_ptr<_Tp> lock() const _NOEXCEPT; 5238 template<class _Up> 5239 _LIBCPP_INLINE_VISIBILITY 5240 bool owner_before(const shared_ptr<_Up>& __r) const 5241 {return __cntrl_ < __r.__cntrl_;} 5242 template<class _Up> 5243 _LIBCPP_INLINE_VISIBILITY 5244 bool owner_before(const weak_ptr<_Up>& __r) const 5245 {return __cntrl_ < __r.__cntrl_;} 5246 5247 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr; 5248 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr; 5249}; 5250 5251template<class _Tp> 5252inline 5253_LIBCPP_CONSTEXPR 5254weak_ptr<_Tp>::weak_ptr() _NOEXCEPT 5255 : __ptr_(0), 5256 __cntrl_(0) 5257{ 5258} 5259 5260template<class _Tp> 5261inline 5262weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT 5263 : __ptr_(__r.__ptr_), 5264 __cntrl_(__r.__cntrl_) 5265{ 5266 if (__cntrl_) 5267 __cntrl_->__add_weak(); 5268} 5269 5270template<class _Tp> 5271template<class _Yp> 5272inline 5273weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, 5274 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5275 _NOEXCEPT 5276 : __ptr_(__r.__ptr_), 5277 __cntrl_(__r.__cntrl_) 5278{ 5279 if (__cntrl_) 5280 __cntrl_->__add_weak(); 5281} 5282 5283template<class _Tp> 5284template<class _Yp> 5285inline 5286weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, 5287 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5288 _NOEXCEPT 5289 : __ptr_(__r.__ptr_), 5290 __cntrl_(__r.__cntrl_) 5291{ 5292 if (__cntrl_) 5293 __cntrl_->__add_weak(); 5294} 5295 5296#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5297 5298template<class _Tp> 5299inline 5300weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT 5301 : __ptr_(__r.__ptr_), 5302 __cntrl_(__r.__cntrl_) 5303{ 5304 __r.__ptr_ = 0; 5305 __r.__cntrl_ = 0; 5306} 5307 5308template<class _Tp> 5309template<class _Yp> 5310inline 5311weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r, 5312 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5313 _NOEXCEPT 5314 : __ptr_(__r.__ptr_), 5315 __cntrl_(__r.__cntrl_) 5316{ 5317 __r.__ptr_ = 0; 5318 __r.__cntrl_ = 0; 5319} 5320 5321#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5322 5323template<class _Tp> 5324weak_ptr<_Tp>::~weak_ptr() 5325{ 5326 if (__cntrl_) 5327 __cntrl_->__release_weak(); 5328} 5329 5330template<class _Tp> 5331inline 5332weak_ptr<_Tp>& 5333weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT 5334{ 5335 weak_ptr(__r).swap(*this); 5336 return *this; 5337} 5338 5339template<class _Tp> 5340template<class _Yp> 5341inline 5342typename enable_if 5343< 5344 is_convertible<_Yp*, _Tp*>::value, 5345 weak_ptr<_Tp>& 5346>::type 5347weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT 5348{ 5349 weak_ptr(__r).swap(*this); 5350 return *this; 5351} 5352 5353#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5354 5355template<class _Tp> 5356inline 5357weak_ptr<_Tp>& 5358weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT 5359{ 5360 weak_ptr(_VSTD::move(__r)).swap(*this); 5361 return *this; 5362} 5363 5364template<class _Tp> 5365template<class _Yp> 5366inline 5367typename enable_if 5368< 5369 is_convertible<_Yp*, _Tp*>::value, 5370 weak_ptr<_Tp>& 5371>::type 5372weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT 5373{ 5374 weak_ptr(_VSTD::move(__r)).swap(*this); 5375 return *this; 5376} 5377 5378#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5379 5380template<class _Tp> 5381template<class _Yp> 5382inline 5383typename enable_if 5384< 5385 is_convertible<_Yp*, _Tp*>::value, 5386 weak_ptr<_Tp>& 5387>::type 5388weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT 5389{ 5390 weak_ptr(__r).swap(*this); 5391 return *this; 5392} 5393 5394template<class _Tp> 5395inline 5396void 5397weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT 5398{ 5399 _VSTD::swap(__ptr_, __r.__ptr_); 5400 _VSTD::swap(__cntrl_, __r.__cntrl_); 5401} 5402 5403template<class _Tp> 5404inline _LIBCPP_INLINE_VISIBILITY 5405void 5406swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT 5407{ 5408 __x.swap(__y); 5409} 5410 5411template<class _Tp> 5412inline 5413void 5414weak_ptr<_Tp>::reset() _NOEXCEPT 5415{ 5416 weak_ptr().swap(*this); 5417} 5418 5419template<class _Tp> 5420template<class _Yp> 5421shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, 5422 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 5423 : __ptr_(__r.__ptr_), 5424 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) 5425{ 5426 if (__cntrl_ == 0) 5427 __throw_bad_weak_ptr(); 5428} 5429 5430template<class _Tp> 5431shared_ptr<_Tp> 5432weak_ptr<_Tp>::lock() const _NOEXCEPT 5433{ 5434 shared_ptr<_Tp> __r; 5435 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; 5436 if (__r.__cntrl_) 5437 __r.__ptr_ = __ptr_; 5438 return __r; 5439} 5440 5441#if _LIBCPP_STD_VER > 14 5442template <class _Tp = void> struct owner_less; 5443#else 5444template <class _Tp> struct owner_less; 5445#endif 5446 5447template <class _Tp> 5448struct _LIBCPP_TEMPLATE_VIS owner_less<shared_ptr<_Tp> > 5449 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> 5450{ 5451 typedef bool result_type; 5452 _LIBCPP_INLINE_VISIBILITY 5453 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5454 {return __x.owner_before(__y);} 5455 _LIBCPP_INLINE_VISIBILITY 5456 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5457 {return __x.owner_before(__y);} 5458 _LIBCPP_INLINE_VISIBILITY 5459 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5460 {return __x.owner_before(__y);} 5461}; 5462 5463template <class _Tp> 5464struct _LIBCPP_TEMPLATE_VIS owner_less<weak_ptr<_Tp> > 5465 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> 5466{ 5467 typedef bool result_type; 5468 _LIBCPP_INLINE_VISIBILITY 5469 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5470 {return __x.owner_before(__y);} 5471 _LIBCPP_INLINE_VISIBILITY 5472 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5473 {return __x.owner_before(__y);} 5474 _LIBCPP_INLINE_VISIBILITY 5475 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5476 {return __x.owner_before(__y);} 5477}; 5478 5479#if _LIBCPP_STD_VER > 14 5480template <> 5481struct _LIBCPP_TEMPLATE_VIS owner_less<void> 5482{ 5483 template <class _Tp, class _Up> 5484 _LIBCPP_INLINE_VISIBILITY 5485 bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const 5486 {return __x.owner_before(__y);} 5487 template <class _Tp, class _Up> 5488 _LIBCPP_INLINE_VISIBILITY 5489 bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const 5490 {return __x.owner_before(__y);} 5491 template <class _Tp, class _Up> 5492 _LIBCPP_INLINE_VISIBILITY 5493 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const 5494 {return __x.owner_before(__y);} 5495 template <class _Tp, class _Up> 5496 _LIBCPP_INLINE_VISIBILITY 5497 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const 5498 {return __x.owner_before(__y);} 5499 typedef void is_transparent; 5500}; 5501#endif 5502 5503template<class _Tp> 5504class _LIBCPP_TEMPLATE_VIS enable_shared_from_this 5505{ 5506 mutable weak_ptr<_Tp> __weak_this_; 5507protected: 5508 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 5509 enable_shared_from_this() _NOEXCEPT {} 5510 _LIBCPP_INLINE_VISIBILITY 5511 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {} 5512 _LIBCPP_INLINE_VISIBILITY 5513 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT 5514 {return *this;} 5515 _LIBCPP_INLINE_VISIBILITY 5516 ~enable_shared_from_this() {} 5517public: 5518 _LIBCPP_INLINE_VISIBILITY 5519 shared_ptr<_Tp> shared_from_this() 5520 {return shared_ptr<_Tp>(__weak_this_);} 5521 _LIBCPP_INLINE_VISIBILITY 5522 shared_ptr<_Tp const> shared_from_this() const 5523 {return shared_ptr<const _Tp>(__weak_this_);} 5524 5525#if _LIBCPP_STD_VER > 14 5526 _LIBCPP_INLINE_VISIBILITY 5527 weak_ptr<_Tp> weak_from_this() _NOEXCEPT 5528 { return __weak_this_; } 5529 5530 _LIBCPP_INLINE_VISIBILITY 5531 weak_ptr<const _Tp> weak_from_this() const _NOEXCEPT 5532 { return __weak_this_; } 5533#endif // _LIBCPP_STD_VER > 14 5534 5535 template <class _Up> friend class shared_ptr; 5536}; 5537 5538template <class _Tp> 5539struct _LIBCPP_TEMPLATE_VIS hash<shared_ptr<_Tp> > 5540{ 5541 typedef shared_ptr<_Tp> argument_type; 5542 typedef size_t result_type; 5543 _LIBCPP_INLINE_VISIBILITY 5544 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 5545 { 5546 return hash<_Tp*>()(__ptr.get()); 5547 } 5548}; 5549 5550template<class _CharT, class _Traits, class _Yp> 5551inline _LIBCPP_INLINE_VISIBILITY 5552basic_ostream<_CharT, _Traits>& 5553operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p); 5554 5555 5556#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 5557 5558class _LIBCPP_TYPE_VIS __sp_mut 5559{ 5560 void* __lx; 5561public: 5562 void lock() _NOEXCEPT; 5563 void unlock() _NOEXCEPT; 5564 5565private: 5566 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT; 5567 __sp_mut(const __sp_mut&); 5568 __sp_mut& operator=(const __sp_mut&); 5569 5570 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5571}; 5572 5573_LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5574 5575template <class _Tp> 5576inline _LIBCPP_INLINE_VISIBILITY 5577bool 5578atomic_is_lock_free(const shared_ptr<_Tp>*) 5579{ 5580 return false; 5581} 5582 5583template <class _Tp> 5584shared_ptr<_Tp> 5585atomic_load(const shared_ptr<_Tp>* __p) 5586{ 5587 __sp_mut& __m = __get_sp_mut(__p); 5588 __m.lock(); 5589 shared_ptr<_Tp> __q = *__p; 5590 __m.unlock(); 5591 return __q; 5592} 5593 5594template <class _Tp> 5595inline _LIBCPP_INLINE_VISIBILITY 5596shared_ptr<_Tp> 5597atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) 5598{ 5599 return atomic_load(__p); 5600} 5601 5602template <class _Tp> 5603void 5604atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5605{ 5606 __sp_mut& __m = __get_sp_mut(__p); 5607 __m.lock(); 5608 __p->swap(__r); 5609 __m.unlock(); 5610} 5611 5612template <class _Tp> 5613inline _LIBCPP_INLINE_VISIBILITY 5614void 5615atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5616{ 5617 atomic_store(__p, __r); 5618} 5619 5620template <class _Tp> 5621shared_ptr<_Tp> 5622atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5623{ 5624 __sp_mut& __m = __get_sp_mut(__p); 5625 __m.lock(); 5626 __p->swap(__r); 5627 __m.unlock(); 5628 return __r; 5629} 5630 5631template <class _Tp> 5632inline _LIBCPP_INLINE_VISIBILITY 5633shared_ptr<_Tp> 5634atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5635{ 5636 return atomic_exchange(__p, __r); 5637} 5638 5639template <class _Tp> 5640bool 5641atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5642{ 5643 shared_ptr<_Tp> __temp; 5644 __sp_mut& __m = __get_sp_mut(__p); 5645 __m.lock(); 5646 if (__p->__owner_equivalent(*__v)) 5647 { 5648 _VSTD::swap(__temp, *__p); 5649 *__p = __w; 5650 __m.unlock(); 5651 return true; 5652 } 5653 _VSTD::swap(__temp, *__v); 5654 *__v = *__p; 5655 __m.unlock(); 5656 return false; 5657} 5658 5659template <class _Tp> 5660inline _LIBCPP_INLINE_VISIBILITY 5661bool 5662atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5663{ 5664 return atomic_compare_exchange_strong(__p, __v, __w); 5665} 5666 5667template <class _Tp> 5668inline _LIBCPP_INLINE_VISIBILITY 5669bool 5670atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5671 shared_ptr<_Tp> __w, memory_order, memory_order) 5672{ 5673 return atomic_compare_exchange_strong(__p, __v, __w); 5674} 5675 5676template <class _Tp> 5677inline _LIBCPP_INLINE_VISIBILITY 5678bool 5679atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5680 shared_ptr<_Tp> __w, memory_order, memory_order) 5681{ 5682 return atomic_compare_exchange_weak(__p, __v, __w); 5683} 5684 5685#endif // !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 5686 5687//enum class 5688#if defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) 5689# ifndef _LIBCPP_CXX03_LANG 5690enum class pointer_safety : unsigned char { 5691 relaxed, 5692 preferred, 5693 strict 5694}; 5695# endif 5696#else 5697struct _LIBCPP_TYPE_VIS pointer_safety 5698{ 5699 enum __lx 5700 { 5701 relaxed, 5702 preferred, 5703 strict 5704 }; 5705 5706 __lx __v_; 5707 5708 _LIBCPP_INLINE_VISIBILITY 5709 pointer_safety() : __v_() {} 5710 5711 _LIBCPP_INLINE_VISIBILITY 5712 pointer_safety(__lx __v) : __v_(__v) {} 5713 _LIBCPP_INLINE_VISIBILITY 5714 operator int() const {return __v_;} 5715}; 5716#endif 5717 5718#if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) && \ 5719 defined(_LIBCPP_BUILDING_MEMORY) 5720_LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT; 5721#else 5722// This function is only offered in C++03 under ABI v1. 5723# if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) || !defined(_LIBCPP_CXX03_LANG) 5724inline _LIBCPP_INLINE_VISIBILITY 5725pointer_safety get_pointer_safety() _NOEXCEPT { 5726 return pointer_safety::relaxed; 5727} 5728# endif 5729#endif 5730 5731 5732_LIBCPP_FUNC_VIS void declare_reachable(void* __p); 5733_LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n); 5734_LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n); 5735_LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p); 5736 5737template <class _Tp> 5738inline _LIBCPP_INLINE_VISIBILITY 5739_Tp* 5740undeclare_reachable(_Tp* __p) 5741{ 5742 return static_cast<_Tp*>(__undeclare_reachable(__p)); 5743} 5744 5745_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); 5746 5747// --- Helper for container swap -- 5748template <typename _Alloc> 5749inline _LIBCPP_INLINE_VISIBILITY 5750void __swap_allocator(_Alloc & __a1, _Alloc & __a2) 5751#if _LIBCPP_STD_VER >= 14 5752 _NOEXCEPT 5753#else 5754 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5755#endif 5756{ 5757 __swap_allocator(__a1, __a2, 5758 integral_constant<bool, _VSTD::allocator_traits<_Alloc>::propagate_on_container_swap::value>()); 5759} 5760 5761template <typename _Alloc> 5762_LIBCPP_INLINE_VISIBILITY 5763void __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type) 5764#if _LIBCPP_STD_VER >= 14 5765 _NOEXCEPT 5766#else 5767 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5768#endif 5769{ 5770 using _VSTD::swap; 5771 swap(__a1, __a2); 5772} 5773 5774template <typename _Alloc> 5775inline _LIBCPP_INLINE_VISIBILITY 5776void __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {} 5777 5778template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> > 5779struct __noexcept_move_assign_container : public integral_constant<bool, 5780 _Traits::propagate_on_container_move_assignment::value 5781#if _LIBCPP_STD_VER > 14 5782 || _Traits::is_always_equal::value 5783#else 5784 && is_nothrow_move_assignable<_Alloc>::value 5785#endif 5786 > {}; 5787 5788 5789#ifndef _LIBCPP_HAS_NO_VARIADICS 5790template <class _Tp, class _Alloc> 5791struct __temp_value { 5792 typedef allocator_traits<_Alloc> _Traits; 5793 5794 typename aligned_storage<sizeof(_Tp), alignof(_Tp)>::type __v; 5795 _Alloc &__a; 5796 5797 _Tp *__addr() { return reinterpret_cast<_Tp *>(addressof(__v)); } 5798 _Tp & get() { return *__addr(); } 5799 5800 template<class... _Args> 5801 __temp_value(_Alloc &__alloc, _Args&& ... __args) : __a(__alloc) 5802 { _Traits::construct(__a, __addr(), _VSTD::forward<_Args>(__args)...); } 5803 5804 ~__temp_value() { _Traits::destroy(__a, __addr()); } 5805 }; 5806#endif 5807 5808_LIBCPP_END_NAMESPACE_STD 5809 5810#endif // _LIBCPP_MEMORY 5811