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