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 17 namespace std 18 { 19 20 struct allocator_arg_t { }; 21 constexpr allocator_arg_t allocator_arg = allocator_arg_t(); 22 23 template <class T, class Alloc> struct uses_allocator; 24 25 template <class Ptr> 26 struct 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 37 template <class T> 38 struct 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 49 template <class Alloc> 50 struct 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 }; 100 101 template <> 102 class allocator<void> 103 { 104 public: 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 }; 111 112 template <class T> 113 class allocator 114 { 115 public: 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 }; 140 141 template <class T, class U> 142 bool operator==(const allocator<T>&, const allocator<U>&) noexcept; 143 144 template <class T, class U> 145 bool operator!=(const allocator<T>&, const allocator<U>&) noexcept; 146 147 template <class OutputIterator, class T> 148 class 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 { 155 public: 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 }; 162 163 template <class T> pair<T*,ptrdiff_t> get_temporary_buffer(ptrdiff_t n) noexcept; 164 template <class T> void return_temporary_buffer(T* p) noexcept; 165 166 template <class T> T* addressof(T& r) noexcept; 167 template <class T> T* addressof(const T&& r) noexcept = delete; 168 169 template <class InputIterator, class ForwardIterator> 170 ForwardIterator 171 uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result); 172 173 template <class InputIterator, class Size, class ForwardIterator> 174 ForwardIterator 175 uninitialized_copy_n(InputIterator first, Size n, ForwardIterator result); 176 177 template <class ForwardIterator, class T> 178 void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x); 179 180 template <class ForwardIterator, class Size, class T> 181 ForwardIterator 182 uninitialized_fill_n(ForwardIterator first, Size n, const T& x); 183 184 template <class T> 185 void destroy_at(T* location); 186 187 template <class ForwardIterator> 188 void destroy(ForwardIterator first, ForwardIterator last); 189 190 template <class ForwardIterator, class Size> 191 ForwardIterator destroy_n(ForwardIterator first, Size n); 192 193 template <class InputIterator, class ForwardIterator> 194 ForwardIterator uninitialized_move(InputIterator first, InputIterator last, ForwardIterator result); 195 196 template <class InputIterator, class Size, class ForwardIterator> 197 pair<InputIterator,ForwardIterator> uninitialized_move_n(InputIterator first, Size n, ForwardIterator result); 198 199 template <class ForwardIterator> 200 void uninitialized_value_construct(ForwardIterator first, ForwardIterator last); 201 202 template <class ForwardIterator, class Size> 203 ForwardIterator uninitialized_value_construct_n(ForwardIterator first, Size n); 204 205 template <class ForwardIterator> 206 void uninitialized_default_construct(ForwardIterator first, ForwardIterator last); 207 208 template <class ForwardIterator, class Size> 209 ForwardIterator uninitialized_default_construct_n(ForwardIterator first, Size n); 210 211 template <class Y> struct auto_ptr_ref {}; // removed in C++17 212 213 template<class X> 214 class auto_ptr // removed in C++17 215 { 216 public: 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 }; 237 238 template <class T> 239 struct 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 }; 246 247 template <class T> 248 struct 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 }; 254 255 template <class T, class D = default_delete<T>> 256 class unique_ptr 257 { 258 public: 259 typedef see below pointer; 260 typedef T element_type; 261 typedef D deleter_type; 262 263 // constructors 264 constexpr unique_ptr() noexcept; 265 explicit unique_ptr(pointer p) noexcept; 266 unique_ptr(pointer p, see below d1) noexcept; 267 unique_ptr(pointer p, see below d2) noexcept; 268 unique_ptr(unique_ptr&& u) noexcept; 269 unique_ptr(nullptr_t) noexcept : unique_ptr() { } 270 template <class U, class E> 271 unique_ptr(unique_ptr<U, E>&& u) noexcept; 272 template <class U> 273 unique_ptr(auto_ptr<U>&& u) noexcept; // removed in C++17 274 275 // destructor 276 ~unique_ptr(); 277 278 // assignment 279 unique_ptr& operator=(unique_ptr&& u) noexcept; 280 template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept; 281 unique_ptr& operator=(nullptr_t) noexcept; 282 283 // observers 284 typename add_lvalue_reference<T>::type operator*() const; 285 pointer operator->() const noexcept; 286 pointer get() const noexcept; 287 deleter_type& get_deleter() noexcept; 288 const deleter_type& get_deleter() const noexcept; 289 explicit operator bool() const noexcept; 290 291 // modifiers 292 pointer release() noexcept; 293 void reset(pointer p = pointer()) noexcept; 294 void swap(unique_ptr& u) noexcept; 295 }; 296 297 template <class T, class D> 298 class unique_ptr<T[], D> 299 { 300 public: 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 }; 334 335 template <class T, class D> 336 void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept; 337 338 template <class T1, class D1, class T2, class D2> 339 bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 340 template <class T1, class D1, class T2, class D2> 341 bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 342 template <class T1, class D1, class T2, class D2> 343 bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 344 template <class T1, class D1, class T2, class D2> 345 bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 346 template <class T1, class D1, class T2, class D2> 347 bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 348 template <class T1, class D1, class T2, class D2> 349 bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 350 351 template <class T, class D> 352 bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; 353 template <class T, class D> 354 bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept; 355 template <class T, class D> 356 bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept; 357 template <class T, class D> 358 bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept; 359 360 template <class T, class D> 361 bool operator<(const unique_ptr<T, D>& x, nullptr_t); 362 template <class T, class D> 363 bool operator<(nullptr_t, const unique_ptr<T, D>& y); 364 template <class T, class D> 365 bool operator<=(const unique_ptr<T, D>& x, nullptr_t); 366 template <class T, class D> 367 bool operator<=(nullptr_t, const unique_ptr<T, D>& y); 368 template <class T, class D> 369 bool operator>(const unique_ptr<T, D>& x, nullptr_t); 370 template <class T, class D> 371 bool operator>(nullptr_t, const unique_ptr<T, D>& y); 372 template <class T, class D> 373 bool operator>=(const unique_ptr<T, D>& x, nullptr_t); 374 template <class T, class D> 375 bool operator>=(nullptr_t, const unique_ptr<T, D>& y); 376 377 class bad_weak_ptr 378 : public std::exception 379 { 380 bad_weak_ptr() noexcept; 381 }; 382 383 template<class T, class... Args> unique_ptr<T> make_unique(Args&&... args); // C++14 384 template<class T> unique_ptr<T> make_unique(size_t n); // C++14 385 template<class T, class... Args> unspecified make_unique(Args&&...) = delete; // C++14, T == U[N] 386 387 template<class T> 388 class shared_ptr 389 { 390 public: 391 typedef T element_type; 392 typedef weak_ptr<T> weak_type; // C++17 393 394 // constructors: 395 constexpr shared_ptr() noexcept; 396 template<class Y> explicit shared_ptr(Y* p); 397 template<class Y, class D> shared_ptr(Y* p, D d); 398 template<class Y, class D, class A> shared_ptr(Y* p, D d, A a); 399 template <class D> shared_ptr(nullptr_t p, D d); 400 template <class D, class A> shared_ptr(nullptr_t p, D d, A a); 401 template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p) noexcept; 402 shared_ptr(const shared_ptr& r) noexcept; 403 template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept; 404 shared_ptr(shared_ptr&& r) noexcept; 405 template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept; 406 template<class Y> explicit shared_ptr(const weak_ptr<Y>& r); 407 template<class Y> shared_ptr(auto_ptr<Y>&& r); // removed in C++17 408 template <class Y, class D> shared_ptr(unique_ptr<Y, D>&& r); 409 shared_ptr(nullptr_t) : shared_ptr() { } 410 411 // destructor: 412 ~shared_ptr(); 413 414 // assignment: 415 shared_ptr& operator=(const shared_ptr& r) noexcept; 416 template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept; 417 shared_ptr& operator=(shared_ptr&& r) noexcept; 418 template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r); 419 template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); // removed in C++17 420 template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r); 421 422 // modifiers: 423 void swap(shared_ptr& r) noexcept; 424 void reset() noexcept; 425 template<class Y> void reset(Y* p); 426 template<class Y, class D> void reset(Y* p, D d); 427 template<class Y, class D, class A> void reset(Y* p, D d, A a); 428 429 // observers: 430 T* get() const noexcept; 431 T& operator*() const noexcept; 432 T* operator->() const noexcept; 433 long use_count() const noexcept; 434 bool unique() const noexcept; 435 explicit operator bool() const noexcept; 436 template<class U> bool owner_before(shared_ptr<U> const& b) const; 437 template<class U> bool owner_before(weak_ptr<U> const& b) const; 438 }; 439 440 // shared_ptr comparisons: 441 template<class T, class U> 442 bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 443 template<class T, class U> 444 bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 445 template<class T, class U> 446 bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 447 template<class T, class U> 448 bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 449 template<class T, class U> 450 bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 451 template<class T, class U> 452 bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 453 454 template <class T> 455 bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept; 456 template <class T> 457 bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept; 458 template <class T> 459 bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept; 460 template <class T> 461 bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept; 462 template <class T> 463 bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept; 464 template <class T> 465 bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept; 466 template <class T> 467 bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept; 468 template <class T> 469 bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept; 470 template <class T> 471 bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept; 472 template <class T> 473 bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept; 474 template <class T> 475 bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept; 476 template <class T> 477 bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept; 478 479 // shared_ptr specialized algorithms: 480 template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept; 481 482 // shared_ptr casts: 483 template<class T, class U> 484 shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept; 485 template<class T, class U> 486 shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept; 487 template<class T, class U> 488 shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept; 489 490 // shared_ptr I/O: 491 template<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: 495 template<class D, class T> D* get_deleter(shared_ptr<T> const& p) noexcept; 496 497 template<class T, class... Args> 498 shared_ptr<T> make_shared(Args&&... args); 499 template<class T, class A, class... Args> 500 shared_ptr<T> allocate_shared(const A& a, Args&&... args); 501 502 template<class T> 503 class weak_ptr 504 { 505 public: 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: 539 template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept; 540 541 // class owner_less: 542 template<class T> struct owner_less; 543 544 template<class T> 545 struct 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 }; 553 554 template<class T> 555 struct 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 }; 563 564 template<class T> 565 class enable_shared_from_this 566 { 567 protected: 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(); 572 public: 573 shared_ptr<T> shared_from_this(); 574 shared_ptr<T const> shared_from_this() const; 575 }; 576 577 template<class T> 578 bool atomic_is_lock_free(const shared_ptr<T>* p); 579 template<class T> 580 shared_ptr<T> atomic_load(const shared_ptr<T>* p); 581 template<class T> 582 shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo); 583 template<class T> 584 void atomic_store(shared_ptr<T>* p, shared_ptr<T> r); 585 template<class T> 586 void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 587 template<class T> 588 shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r); 589 template<class T> 590 shared_ptr<T> 591 atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 592 template<class T> 593 bool 594 atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 595 template<class T> 596 bool 597 atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 598 template<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); 603 template<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 609 template <class T> struct hash; 610 template <class T, class D> struct hash<unique_ptr<T, D> >; 611 template <class T> struct hash<shared_ptr<T> >; 612 613 // Pointer safety 614 enum class pointer_safety { relaxed, preferred, strict }; 615 void declare_reachable(void *p); 616 template <class T> T *undeclare_reachable(T *p); 617 void declare_no_pointers(char *p, size_t n); 618 void undeclare_no_pointers(char *p, size_t n); 619 pointer_safety get_pointer_safety() noexcept; 620 621 void* align(size_t alignment, size_t size, void*& ptr, size_t& space); 622 623 } // std 624 625 */ 626 627 #include <__config> 628 #include <type_traits> 629 #include <typeinfo> 630 #include <cstddef> 631 #include <cstdint> 632 #include <new> 633 #include <utility> 634 #include <limits> 635 #include <iterator> 636 #include <__functional_base> 637 #include <iosfwd> 638 #include <tuple> 639 #include <stdexcept> 640 #include <cstring> 641 642 #if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 643 # include <atomic> 644 #endif 645 646 #include <__undef_min_max> 647 648 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 649 #pragma GCC system_header 650 #endif 651 652 _LIBCPP_BEGIN_NAMESPACE_STD 653 654 template <class _ValueType> 655 inline _LIBCPP_ALWAYS_INLINE 656 _ValueType __libcpp_relaxed_load(_ValueType const* __value) { 657 #if !defined(_LIBCPP_HAS_NO_THREADS) && \ 658 defined(__ATOMIC_RELAXED) && \ 659 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407) 660 return __atomic_load_n(__value, __ATOMIC_RELAXED); 661 #else 662 return *__value; 663 #endif 664 } 665 666 template <class _ValueType> 667 inline _LIBCPP_ALWAYS_INLINE 668 _ValueType __libcpp_acquire_load(_ValueType const* __value) { 669 #if !defined(_LIBCPP_HAS_NO_THREADS) && \ 670 defined(__ATOMIC_ACQUIRE) && \ 671 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407) 672 return __atomic_load_n(__value, __ATOMIC_ACQUIRE); 673 #else 674 return *__value; 675 #endif 676 } 677 678 // addressof moved to <type_traits> 679 680 template <class _Tp> class allocator; 681 682 template <> 683 class _LIBCPP_TEMPLATE_VIS allocator<void> 684 { 685 public: 686 typedef void* pointer; 687 typedef const void* const_pointer; 688 typedef void value_type; 689 690 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 691 }; 692 693 template <> 694 class _LIBCPP_TEMPLATE_VIS allocator<const void> 695 { 696 public: 697 typedef const void* pointer; 698 typedef const void* const_pointer; 699 typedef const void value_type; 700 701 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 702 }; 703 704 // pointer_traits 705 706 template <class _Tp> 707 struct __has_element_type 708 { 709 private: 710 struct __two {char __lx; char __lxx;}; 711 template <class _Up> static __two __test(...); 712 template <class _Up> static char __test(typename _Up::element_type* = 0); 713 public: 714 static const bool value = sizeof(__test<_Tp>(0)) == 1; 715 }; 716 717 template <class _Ptr, bool = __has_element_type<_Ptr>::value> 718 struct __pointer_traits_element_type; 719 720 template <class _Ptr> 721 struct __pointer_traits_element_type<_Ptr, true> 722 { 723 typedef typename _Ptr::element_type type; 724 }; 725 726 #ifndef _LIBCPP_HAS_NO_VARIADICS 727 728 template <template <class, class...> class _Sp, class _Tp, class ..._Args> 729 struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true> 730 { 731 typedef typename _Sp<_Tp, _Args...>::element_type type; 732 }; 733 734 template <template <class, class...> class _Sp, class _Tp, class ..._Args> 735 struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false> 736 { 737 typedef _Tp type; 738 }; 739 740 #else // _LIBCPP_HAS_NO_VARIADICS 741 742 template <template <class> class _Sp, class _Tp> 743 struct __pointer_traits_element_type<_Sp<_Tp>, true> 744 { 745 typedef typename _Sp<_Tp>::element_type type; 746 }; 747 748 template <template <class> class _Sp, class _Tp> 749 struct __pointer_traits_element_type<_Sp<_Tp>, false> 750 { 751 typedef _Tp type; 752 }; 753 754 template <template <class, class> class _Sp, class _Tp, class _A0> 755 struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true> 756 { 757 typedef typename _Sp<_Tp, _A0>::element_type type; 758 }; 759 760 template <template <class, class> class _Sp, class _Tp, class _A0> 761 struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false> 762 { 763 typedef _Tp type; 764 }; 765 766 template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 767 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true> 768 { 769 typedef typename _Sp<_Tp, _A0, _A1>::element_type type; 770 }; 771 772 template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 773 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false> 774 { 775 typedef _Tp type; 776 }; 777 778 template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 779 class _A1, class _A2> 780 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true> 781 { 782 typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type; 783 }; 784 785 template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 786 class _A1, class _A2> 787 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false> 788 { 789 typedef _Tp type; 790 }; 791 792 #endif // _LIBCPP_HAS_NO_VARIADICS 793 794 template <class _Tp> 795 struct __has_difference_type 796 { 797 private: 798 struct __two {char __lx; char __lxx;}; 799 template <class _Up> static __two __test(...); 800 template <class _Up> static char __test(typename _Up::difference_type* = 0); 801 public: 802 static const bool value = sizeof(__test<_Tp>(0)) == 1; 803 }; 804 805 template <class _Ptr, bool = __has_difference_type<_Ptr>::value> 806 struct __pointer_traits_difference_type 807 { 808 typedef ptrdiff_t type; 809 }; 810 811 template <class _Ptr> 812 struct __pointer_traits_difference_type<_Ptr, true> 813 { 814 typedef typename _Ptr::difference_type type; 815 }; 816 817 template <class _Tp, class _Up> 818 struct __has_rebind 819 { 820 private: 821 struct __two {char __lx; char __lxx;}; 822 template <class _Xp> static __two __test(...); 823 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0); 824 public: 825 static const bool value = sizeof(__test<_Tp>(0)) == 1; 826 }; 827 828 template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 829 struct __pointer_traits_rebind 830 { 831 #ifndef _LIBCPP_CXX03_LANG 832 typedef typename _Tp::template rebind<_Up> type; 833 #else 834 typedef typename _Tp::template rebind<_Up>::other type; 835 #endif 836 }; 837 838 #ifndef _LIBCPP_HAS_NO_VARIADICS 839 840 template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 841 struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true> 842 { 843 #ifndef _LIBCPP_CXX03_LANG 844 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type; 845 #else 846 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type; 847 #endif 848 }; 849 850 template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 851 struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false> 852 { 853 typedef _Sp<_Up, _Args...> type; 854 }; 855 856 #else // _LIBCPP_HAS_NO_VARIADICS 857 858 template <template <class> class _Sp, class _Tp, class _Up> 859 struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true> 860 { 861 #ifndef _LIBCPP_CXX03_LANG 862 typedef typename _Sp<_Tp>::template rebind<_Up> type; 863 #else 864 typedef typename _Sp<_Tp>::template rebind<_Up>::other type; 865 #endif 866 }; 867 868 template <template <class> class _Sp, class _Tp, class _Up> 869 struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false> 870 { 871 typedef _Sp<_Up> type; 872 }; 873 874 template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 875 struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true> 876 { 877 #ifndef _LIBCPP_CXX03_LANG 878 typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type; 879 #else 880 typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type; 881 #endif 882 }; 883 884 template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 885 struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false> 886 { 887 typedef _Sp<_Up, _A0> type; 888 }; 889 890 template <template <class, class, class> class _Sp, class _Tp, class _A0, 891 class _A1, class _Up> 892 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true> 893 { 894 #ifndef _LIBCPP_CXX03_LANG 895 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type; 896 #else 897 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type; 898 #endif 899 }; 900 901 template <template <class, class, class> class _Sp, class _Tp, class _A0, 902 class _A1, class _Up> 903 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false> 904 { 905 typedef _Sp<_Up, _A0, _A1> type; 906 }; 907 908 template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 909 class _A1, class _A2, class _Up> 910 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true> 911 { 912 #ifndef _LIBCPP_CXX03_LANG 913 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type; 914 #else 915 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 916 #endif 917 }; 918 919 template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 920 class _A1, class _A2, class _Up> 921 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false> 922 { 923 typedef _Sp<_Up, _A0, _A1, _A2> type; 924 }; 925 926 #endif // _LIBCPP_HAS_NO_VARIADICS 927 928 template <class _Ptr> 929 struct _LIBCPP_TEMPLATE_VIS pointer_traits 930 { 931 typedef _Ptr pointer; 932 typedef typename __pointer_traits_element_type<pointer>::type element_type; 933 typedef typename __pointer_traits_difference_type<pointer>::type difference_type; 934 935 #ifndef _LIBCPP_CXX03_LANG 936 template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type; 937 #else 938 template <class _Up> struct rebind 939 {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;}; 940 #endif // _LIBCPP_CXX03_LANG 941 942 private: 943 struct __nat {}; 944 public: 945 _LIBCPP_INLINE_VISIBILITY 946 static pointer pointer_to(typename conditional<is_void<element_type>::value, 947 __nat, element_type>::type& __r) 948 {return pointer::pointer_to(__r);} 949 }; 950 951 template <class _Tp> 952 struct _LIBCPP_TEMPLATE_VIS pointer_traits<_Tp*> 953 { 954 typedef _Tp* pointer; 955 typedef _Tp element_type; 956 typedef ptrdiff_t difference_type; 957 958 #ifndef _LIBCPP_CXX03_LANG 959 template <class _Up> using rebind = _Up*; 960 #else 961 template <class _Up> struct rebind {typedef _Up* other;}; 962 #endif 963 964 private: 965 struct __nat {}; 966 public: 967 _LIBCPP_INLINE_VISIBILITY 968 static pointer pointer_to(typename conditional<is_void<element_type>::value, 969 __nat, element_type>::type& __r) _NOEXCEPT 970 {return _VSTD::addressof(__r);} 971 }; 972 973 template <class _From, class _To> 974 struct __rebind_pointer { 975 #ifndef _LIBCPP_CXX03_LANG 976 typedef typename pointer_traits<_From>::template rebind<_To> type; 977 #else 978 typedef typename pointer_traits<_From>::template rebind<_To>::other type; 979 #endif 980 }; 981 982 // allocator_traits 983 984 namespace __has_pointer_type_imp 985 { 986 template <class _Up> static __two __test(...); 987 template <class _Up> static char __test(typename _Up::pointer* = 0); 988 } 989 990 template <class _Tp> 991 struct __has_pointer_type 992 : public integral_constant<bool, sizeof(__has_pointer_type_imp::__test<_Tp>(0)) == 1> 993 { 994 }; 995 996 namespace __pointer_type_imp 997 { 998 999 template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value> 1000 struct __pointer_type 1001 { 1002 typedef typename _Dp::pointer type; 1003 }; 1004 1005 template <class _Tp, class _Dp> 1006 struct __pointer_type<_Tp, _Dp, false> 1007 { 1008 typedef _Tp* type; 1009 }; 1010 1011 } // __pointer_type_imp 1012 1013 template <class _Tp, class _Dp> 1014 struct __pointer_type 1015 { 1016 typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type; 1017 }; 1018 1019 template <class _Tp> 1020 struct __has_const_pointer 1021 { 1022 private: 1023 struct __two {char __lx; char __lxx;}; 1024 template <class _Up> static __two __test(...); 1025 template <class _Up> static char __test(typename _Up::const_pointer* = 0); 1026 public: 1027 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1028 }; 1029 1030 template <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value> 1031 struct __const_pointer 1032 { 1033 typedef typename _Alloc::const_pointer type; 1034 }; 1035 1036 template <class _Tp, class _Ptr, class _Alloc> 1037 struct __const_pointer<_Tp, _Ptr, _Alloc, false> 1038 { 1039 #ifndef _LIBCPP_CXX03_LANG 1040 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp> type; 1041 #else 1042 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type; 1043 #endif 1044 }; 1045 1046 template <class _Tp> 1047 struct __has_void_pointer 1048 { 1049 private: 1050 struct __two {char __lx; char __lxx;}; 1051 template <class _Up> static __two __test(...); 1052 template <class _Up> static char __test(typename _Up::void_pointer* = 0); 1053 public: 1054 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1055 }; 1056 1057 template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value> 1058 struct __void_pointer 1059 { 1060 typedef typename _Alloc::void_pointer type; 1061 }; 1062 1063 template <class _Ptr, class _Alloc> 1064 struct __void_pointer<_Ptr, _Alloc, false> 1065 { 1066 #ifndef _LIBCPP_CXX03_LANG 1067 typedef typename pointer_traits<_Ptr>::template rebind<void> type; 1068 #else 1069 typedef typename pointer_traits<_Ptr>::template rebind<void>::other type; 1070 #endif 1071 }; 1072 1073 template <class _Tp> 1074 struct __has_const_void_pointer 1075 { 1076 private: 1077 struct __two {char __lx; char __lxx;}; 1078 template <class _Up> static __two __test(...); 1079 template <class _Up> static char __test(typename _Up::const_void_pointer* = 0); 1080 public: 1081 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1082 }; 1083 1084 template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value> 1085 struct __const_void_pointer 1086 { 1087 typedef typename _Alloc::const_void_pointer type; 1088 }; 1089 1090 template <class _Ptr, class _Alloc> 1091 struct __const_void_pointer<_Ptr, _Alloc, false> 1092 { 1093 #ifndef _LIBCPP_CXX03_LANG 1094 typedef typename pointer_traits<_Ptr>::template rebind<const void> type; 1095 #else 1096 typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type; 1097 #endif 1098 }; 1099 1100 template <class _Tp> 1101 inline _LIBCPP_INLINE_VISIBILITY 1102 _Tp* 1103 __to_raw_pointer(_Tp* __p) _NOEXCEPT 1104 { 1105 return __p; 1106 } 1107 1108 template <class _Pointer> 1109 inline _LIBCPP_INLINE_VISIBILITY 1110 typename pointer_traits<_Pointer>::element_type* 1111 __to_raw_pointer(_Pointer __p) _NOEXCEPT 1112 { 1113 return _VSTD::__to_raw_pointer(__p.operator->()); 1114 } 1115 1116 template <class _Tp> 1117 struct __has_size_type 1118 { 1119 private: 1120 struct __two {char __lx; char __lxx;}; 1121 template <class _Up> static __two __test(...); 1122 template <class _Up> static char __test(typename _Up::size_type* = 0); 1123 public: 1124 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1125 }; 1126 1127 template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value> 1128 struct __size_type 1129 { 1130 typedef typename make_unsigned<_DiffType>::type type; 1131 }; 1132 1133 template <class _Alloc, class _DiffType> 1134 struct __size_type<_Alloc, _DiffType, true> 1135 { 1136 typedef typename _Alloc::size_type type; 1137 }; 1138 1139 template <class _Tp> 1140 struct __has_propagate_on_container_copy_assignment 1141 { 1142 private: 1143 struct __two {char __lx; char __lxx;}; 1144 template <class _Up> static __two __test(...); 1145 template <class _Up> static char __test(typename _Up::propagate_on_container_copy_assignment* = 0); 1146 public: 1147 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1148 }; 1149 1150 template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value> 1151 struct __propagate_on_container_copy_assignment 1152 { 1153 typedef false_type type; 1154 }; 1155 1156 template <class _Alloc> 1157 struct __propagate_on_container_copy_assignment<_Alloc, true> 1158 { 1159 typedef typename _Alloc::propagate_on_container_copy_assignment type; 1160 }; 1161 1162 template <class _Tp> 1163 struct __has_propagate_on_container_move_assignment 1164 { 1165 private: 1166 struct __two {char __lx; char __lxx;}; 1167 template <class _Up> static __two __test(...); 1168 template <class _Up> static char __test(typename _Up::propagate_on_container_move_assignment* = 0); 1169 public: 1170 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1171 }; 1172 1173 template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value> 1174 struct __propagate_on_container_move_assignment 1175 { 1176 typedef false_type type; 1177 }; 1178 1179 template <class _Alloc> 1180 struct __propagate_on_container_move_assignment<_Alloc, true> 1181 { 1182 typedef typename _Alloc::propagate_on_container_move_assignment type; 1183 }; 1184 1185 template <class _Tp> 1186 struct __has_propagate_on_container_swap 1187 { 1188 private: 1189 struct __two {char __lx; char __lxx;}; 1190 template <class _Up> static __two __test(...); 1191 template <class _Up> static char __test(typename _Up::propagate_on_container_swap* = 0); 1192 public: 1193 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1194 }; 1195 1196 template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value> 1197 struct __propagate_on_container_swap 1198 { 1199 typedef false_type type; 1200 }; 1201 1202 template <class _Alloc> 1203 struct __propagate_on_container_swap<_Alloc, true> 1204 { 1205 typedef typename _Alloc::propagate_on_container_swap type; 1206 }; 1207 1208 template <class _Tp> 1209 struct __has_is_always_equal 1210 { 1211 private: 1212 struct __two {char __lx; char __lxx;}; 1213 template <class _Up> static __two __test(...); 1214 template <class _Up> static char __test(typename _Up::is_always_equal* = 0); 1215 public: 1216 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1217 }; 1218 1219 template <class _Alloc, bool = __has_is_always_equal<_Alloc>::value> 1220 struct __is_always_equal 1221 { 1222 typedef typename _VSTD::is_empty<_Alloc>::type type; 1223 }; 1224 1225 template <class _Alloc> 1226 struct __is_always_equal<_Alloc, true> 1227 { 1228 typedef typename _Alloc::is_always_equal type; 1229 }; 1230 1231 template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 1232 struct __has_rebind_other 1233 { 1234 private: 1235 struct __two {char __lx; char __lxx;}; 1236 template <class _Xp> static __two __test(...); 1237 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0); 1238 public: 1239 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1240 }; 1241 1242 template <class _Tp, class _Up> 1243 struct __has_rebind_other<_Tp, _Up, false> 1244 { 1245 static const bool value = false; 1246 }; 1247 1248 template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value> 1249 struct __allocator_traits_rebind 1250 { 1251 typedef typename _Tp::template rebind<_Up>::other type; 1252 }; 1253 1254 #ifndef _LIBCPP_HAS_NO_VARIADICS 1255 1256 template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1257 struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true> 1258 { 1259 typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type; 1260 }; 1261 1262 template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1263 struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false> 1264 { 1265 typedef _Alloc<_Up, _Args...> type; 1266 }; 1267 1268 #else // _LIBCPP_HAS_NO_VARIADICS 1269 1270 template <template <class> class _Alloc, class _Tp, class _Up> 1271 struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true> 1272 { 1273 typedef typename _Alloc<_Tp>::template rebind<_Up>::other type; 1274 }; 1275 1276 template <template <class> class _Alloc, class _Tp, class _Up> 1277 struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false> 1278 { 1279 typedef _Alloc<_Up> type; 1280 }; 1281 1282 template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1283 struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true> 1284 { 1285 typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type; 1286 }; 1287 1288 template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1289 struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false> 1290 { 1291 typedef _Alloc<_Up, _A0> type; 1292 }; 1293 1294 template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1295 class _A1, class _Up> 1296 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true> 1297 { 1298 typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type; 1299 }; 1300 1301 template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1302 class _A1, class _Up> 1303 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false> 1304 { 1305 typedef _Alloc<_Up, _A0, _A1> type; 1306 }; 1307 1308 template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1309 class _A1, class _A2, class _Up> 1310 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true> 1311 { 1312 typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 1313 }; 1314 1315 template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1316 class _A1, class _A2, class _Up> 1317 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false> 1318 { 1319 typedef _Alloc<_Up, _A0, _A1, _A2> type; 1320 }; 1321 1322 #endif // _LIBCPP_HAS_NO_VARIADICS 1323 1324 #ifndef _LIBCPP_CXX03_LANG 1325 1326 template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1327 auto 1328 __has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1329 -> decltype(__a.allocate(__sz, __p), true_type()); 1330 1331 template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1332 auto 1333 __has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1334 -> false_type; 1335 1336 template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1337 struct __has_allocate_hint 1338 : integral_constant<bool, 1339 is_same< 1340 decltype(__has_allocate_hint_test(declval<_Alloc>(), 1341 declval<_SizeType>(), 1342 declval<_ConstVoidPtr>())), 1343 true_type>::value> 1344 { 1345 }; 1346 1347 #else // _LIBCPP_CXX03_LANG 1348 1349 template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1350 struct __has_allocate_hint 1351 : true_type 1352 { 1353 }; 1354 1355 #endif // _LIBCPP_CXX03_LANG 1356 1357 #if !defined(_LIBCPP_CXX03_LANG) 1358 1359 template <class _Alloc, class _Tp, class ..._Args> 1360 decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(), 1361 _VSTD::declval<_Args>()...), 1362 true_type()) 1363 __has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args); 1364 1365 template <class _Alloc, class _Pointer, class ..._Args> 1366 false_type 1367 __has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args); 1368 1369 template <class _Alloc, class _Pointer, class ..._Args> 1370 struct __has_construct 1371 : integral_constant<bool, 1372 is_same< 1373 decltype(__has_construct_test(declval<_Alloc>(), 1374 declval<_Pointer>(), 1375 declval<_Args>()...)), 1376 true_type>::value> 1377 { 1378 }; 1379 1380 template <class _Alloc, class _Pointer> 1381 auto 1382 __has_destroy_test(_Alloc&& __a, _Pointer&& __p) 1383 -> decltype(__a.destroy(__p), true_type()); 1384 1385 template <class _Alloc, class _Pointer> 1386 auto 1387 __has_destroy_test(const _Alloc& __a, _Pointer&& __p) 1388 -> false_type; 1389 1390 template <class _Alloc, class _Pointer> 1391 struct __has_destroy 1392 : integral_constant<bool, 1393 is_same< 1394 decltype(__has_destroy_test(declval<_Alloc>(), 1395 declval<_Pointer>())), 1396 true_type>::value> 1397 { 1398 }; 1399 1400 template <class _Alloc> 1401 auto 1402 __has_max_size_test(_Alloc&& __a) 1403 -> decltype(__a.max_size(), true_type()); 1404 1405 template <class _Alloc> 1406 auto 1407 __has_max_size_test(const volatile _Alloc& __a) 1408 -> false_type; 1409 1410 template <class _Alloc> 1411 struct __has_max_size 1412 : integral_constant<bool, 1413 is_same< 1414 decltype(__has_max_size_test(declval<_Alloc&>())), 1415 true_type>::value> 1416 { 1417 }; 1418 1419 template <class _Alloc> 1420 auto 1421 __has_select_on_container_copy_construction_test(_Alloc&& __a) 1422 -> decltype(__a.select_on_container_copy_construction(), true_type()); 1423 1424 template <class _Alloc> 1425 auto 1426 __has_select_on_container_copy_construction_test(const volatile _Alloc& __a) 1427 -> false_type; 1428 1429 template <class _Alloc> 1430 struct __has_select_on_container_copy_construction 1431 : integral_constant<bool, 1432 is_same< 1433 decltype(__has_select_on_container_copy_construction_test(declval<_Alloc&>())), 1434 true_type>::value> 1435 { 1436 }; 1437 1438 #else // _LIBCPP_CXX03_LANG 1439 1440 #ifndef _LIBCPP_HAS_NO_VARIADICS 1441 1442 template <class _Alloc, class _Pointer, class ..._Args> 1443 struct __has_construct 1444 : false_type 1445 { 1446 }; 1447 1448 #else // _LIBCPP_HAS_NO_VARIADICS 1449 1450 template <class _Alloc, class _Pointer, class _Args> 1451 struct __has_construct 1452 : false_type 1453 { 1454 }; 1455 1456 #endif // _LIBCPP_HAS_NO_VARIADICS 1457 1458 template <class _Alloc, class _Pointer> 1459 struct __has_destroy 1460 : false_type 1461 { 1462 }; 1463 1464 template <class _Alloc> 1465 struct __has_max_size 1466 : true_type 1467 { 1468 }; 1469 1470 template <class _Alloc> 1471 struct __has_select_on_container_copy_construction 1472 : false_type 1473 { 1474 }; 1475 1476 #endif // _LIBCPP_CXX03_LANG 1477 1478 template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value> 1479 struct __alloc_traits_difference_type 1480 { 1481 typedef typename pointer_traits<_Ptr>::difference_type type; 1482 }; 1483 1484 template <class _Alloc, class _Ptr> 1485 struct __alloc_traits_difference_type<_Alloc, _Ptr, true> 1486 { 1487 typedef typename _Alloc::difference_type type; 1488 }; 1489 1490 template <class _Alloc> 1491 struct _LIBCPP_TEMPLATE_VIS allocator_traits 1492 { 1493 typedef _Alloc allocator_type; 1494 typedef typename allocator_type::value_type value_type; 1495 1496 typedef typename __pointer_type<value_type, allocator_type>::type pointer; 1497 typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer; 1498 typedef typename __void_pointer<pointer, allocator_type>::type void_pointer; 1499 typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer; 1500 1501 typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type; 1502 typedef typename __size_type<allocator_type, difference_type>::type size_type; 1503 1504 typedef typename __propagate_on_container_copy_assignment<allocator_type>::type 1505 propagate_on_container_copy_assignment; 1506 typedef typename __propagate_on_container_move_assignment<allocator_type>::type 1507 propagate_on_container_move_assignment; 1508 typedef typename __propagate_on_container_swap<allocator_type>::type 1509 propagate_on_container_swap; 1510 typedef typename __is_always_equal<allocator_type>::type 1511 is_always_equal; 1512 1513 #ifndef _LIBCPP_CXX03_LANG 1514 template <class _Tp> using rebind_alloc = 1515 typename __allocator_traits_rebind<allocator_type, _Tp>::type; 1516 template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>; 1517 #else // _LIBCPP_CXX03_LANG 1518 template <class _Tp> struct rebind_alloc 1519 {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;}; 1520 template <class _Tp> struct rebind_traits 1521 {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;}; 1522 #endif // _LIBCPP_CXX03_LANG 1523 1524 _LIBCPP_INLINE_VISIBILITY 1525 static pointer allocate(allocator_type& __a, size_type __n) 1526 {return __a.allocate(__n);} 1527 _LIBCPP_INLINE_VISIBILITY 1528 static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint) 1529 {return allocate(__a, __n, __hint, 1530 __has_allocate_hint<allocator_type, size_type, const_void_pointer>());} 1531 1532 _LIBCPP_INLINE_VISIBILITY 1533 static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT 1534 {__a.deallocate(__p, __n);} 1535 1536 #ifndef _LIBCPP_HAS_NO_VARIADICS 1537 template <class _Tp, class... _Args> 1538 _LIBCPP_INLINE_VISIBILITY 1539 static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args) 1540 {__construct(__has_construct<allocator_type, _Tp*, _Args...>(), 1541 __a, __p, _VSTD::forward<_Args>(__args)...);} 1542 #else // _LIBCPP_HAS_NO_VARIADICS 1543 template <class _Tp> 1544 _LIBCPP_INLINE_VISIBILITY 1545 static void construct(allocator_type&, _Tp* __p) 1546 { 1547 ::new ((void*)__p) _Tp(); 1548 } 1549 template <class _Tp, class _A0> 1550 _LIBCPP_INLINE_VISIBILITY 1551 static void construct(allocator_type&, _Tp* __p, const _A0& __a0) 1552 { 1553 ::new ((void*)__p) _Tp(__a0); 1554 } 1555 template <class _Tp, class _A0, class _A1> 1556 _LIBCPP_INLINE_VISIBILITY 1557 static void construct(allocator_type&, _Tp* __p, const _A0& __a0, 1558 const _A1& __a1) 1559 { 1560 ::new ((void*)__p) _Tp(__a0, __a1); 1561 } 1562 template <class _Tp, class _A0, class _A1, class _A2> 1563 _LIBCPP_INLINE_VISIBILITY 1564 static void construct(allocator_type&, _Tp* __p, const _A0& __a0, 1565 const _A1& __a1, const _A2& __a2) 1566 { 1567 ::new ((void*)__p) _Tp(__a0, __a1, __a2); 1568 } 1569 #endif // _LIBCPP_HAS_NO_VARIADICS 1570 1571 template <class _Tp> 1572 _LIBCPP_INLINE_VISIBILITY 1573 static void destroy(allocator_type& __a, _Tp* __p) 1574 {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);} 1575 1576 _LIBCPP_INLINE_VISIBILITY 1577 static size_type max_size(const allocator_type& __a) _NOEXCEPT 1578 {return __max_size(__has_max_size<const allocator_type>(), __a);} 1579 1580 _LIBCPP_INLINE_VISIBILITY 1581 static allocator_type 1582 select_on_container_copy_construction(const allocator_type& __a) 1583 {return select_on_container_copy_construction( 1584 __has_select_on_container_copy_construction<const allocator_type>(), 1585 __a);} 1586 1587 template <class _Ptr> 1588 _LIBCPP_INLINE_VISIBILITY 1589 static 1590 void 1591 __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) 1592 { 1593 for (; __begin1 != __end1; ++__begin1, ++__begin2) 1594 construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1)); 1595 } 1596 1597 template <class _Tp> 1598 _LIBCPP_INLINE_VISIBILITY 1599 static 1600 typename enable_if 1601 < 1602 (is_same<allocator_type, allocator<_Tp> >::value 1603 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1604 is_trivially_move_constructible<_Tp>::value, 1605 void 1606 >::type 1607 __construct_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1608 { 1609 ptrdiff_t _Np = __end1 - __begin1; 1610 if (_Np > 0) 1611 { 1612 _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp)); 1613 __begin2 += _Np; 1614 } 1615 } 1616 1617 template <class _Iter, class _Ptr> 1618 _LIBCPP_INLINE_VISIBILITY 1619 static 1620 void 1621 __construct_range_forward(allocator_type& __a, _Iter __begin1, _Iter __end1, _Ptr& __begin2) 1622 { 1623 for (; __begin1 != __end1; ++__begin1, (void) ++__begin2) 1624 construct(__a, _VSTD::__to_raw_pointer(__begin2), *__begin1); 1625 } 1626 1627 template <class _Tp> 1628 _LIBCPP_INLINE_VISIBILITY 1629 static 1630 typename enable_if 1631 < 1632 (is_same<allocator_type, allocator<_Tp> >::value 1633 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1634 is_trivially_move_constructible<_Tp>::value, 1635 void 1636 >::type 1637 __construct_range_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1638 { 1639 typedef typename remove_const<_Tp>::type _Vp; 1640 ptrdiff_t _Np = __end1 - __begin1; 1641 if (_Np > 0) 1642 { 1643 _VSTD::memcpy(const_cast<_Vp*>(__begin2), __begin1, _Np * sizeof(_Tp)); 1644 __begin2 += _Np; 1645 } 1646 } 1647 1648 template <class _Ptr> 1649 _LIBCPP_INLINE_VISIBILITY 1650 static 1651 void 1652 __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2) 1653 { 1654 while (__end1 != __begin1) 1655 { 1656 construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1)); 1657 --__end2; 1658 } 1659 } 1660 1661 template <class _Tp> 1662 _LIBCPP_INLINE_VISIBILITY 1663 static 1664 typename enable_if 1665 < 1666 (is_same<allocator_type, allocator<_Tp> >::value 1667 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1668 is_trivially_move_constructible<_Tp>::value, 1669 void 1670 >::type 1671 __construct_backward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __end2) 1672 { 1673 ptrdiff_t _Np = __end1 - __begin1; 1674 __end2 -= _Np; 1675 if (_Np > 0) 1676 _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp)); 1677 } 1678 1679 private: 1680 1681 _LIBCPP_INLINE_VISIBILITY 1682 static pointer allocate(allocator_type& __a, size_type __n, 1683 const_void_pointer __hint, true_type) 1684 {return __a.allocate(__n, __hint);} 1685 _LIBCPP_INLINE_VISIBILITY 1686 static pointer allocate(allocator_type& __a, size_type __n, 1687 const_void_pointer, false_type) 1688 {return __a.allocate(__n);} 1689 1690 #ifndef _LIBCPP_HAS_NO_VARIADICS 1691 template <class _Tp, class... _Args> 1692 _LIBCPP_INLINE_VISIBILITY 1693 static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args) 1694 {__a.construct(__p, _VSTD::forward<_Args>(__args)...);} 1695 template <class _Tp, class... _Args> 1696 _LIBCPP_INLINE_VISIBILITY 1697 static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args) 1698 { 1699 ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...); 1700 } 1701 #endif // _LIBCPP_HAS_NO_VARIADICS 1702 1703 template <class _Tp> 1704 _LIBCPP_INLINE_VISIBILITY 1705 static void __destroy(true_type, allocator_type& __a, _Tp* __p) 1706 {__a.destroy(__p);} 1707 template <class _Tp> 1708 _LIBCPP_INLINE_VISIBILITY 1709 static void __destroy(false_type, allocator_type&, _Tp* __p) 1710 { 1711 __p->~_Tp(); 1712 } 1713 1714 _LIBCPP_INLINE_VISIBILITY 1715 static size_type __max_size(true_type, const allocator_type& __a) 1716 {return __a.max_size();} 1717 _LIBCPP_INLINE_VISIBILITY 1718 static size_type __max_size(false_type, const allocator_type&) 1719 {return numeric_limits<size_type>::max() / sizeof(value_type);} 1720 1721 _LIBCPP_INLINE_VISIBILITY 1722 static allocator_type 1723 select_on_container_copy_construction(true_type, const allocator_type& __a) 1724 {return __a.select_on_container_copy_construction();} 1725 _LIBCPP_INLINE_VISIBILITY 1726 static allocator_type 1727 select_on_container_copy_construction(false_type, const allocator_type& __a) 1728 {return __a;} 1729 }; 1730 1731 template <class _Traits, class _Tp> 1732 struct __rebind_alloc_helper 1733 { 1734 #ifndef _LIBCPP_CXX03_LANG 1735 typedef typename _Traits::template rebind_alloc<_Tp> type; 1736 #else 1737 typedef typename _Traits::template rebind_alloc<_Tp>::other type; 1738 #endif 1739 }; 1740 1741 // allocator 1742 1743 template <class _Tp> 1744 class _LIBCPP_TEMPLATE_VIS allocator 1745 { 1746 public: 1747 typedef size_t size_type; 1748 typedef ptrdiff_t difference_type; 1749 typedef _Tp* pointer; 1750 typedef const _Tp* const_pointer; 1751 typedef _Tp& reference; 1752 typedef const _Tp& const_reference; 1753 typedef _Tp value_type; 1754 1755 typedef true_type propagate_on_container_move_assignment; 1756 typedef true_type is_always_equal; 1757 1758 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1759 1760 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1761 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1762 _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT 1763 {return _VSTD::addressof(__x);} 1764 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1765 {return _VSTD::addressof(__x);} 1766 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1767 { 1768 if (__n > max_size()) 1769 __throw_length_error("allocator<T>::allocate(size_t n)" 1770 " 'n' exceeds maximum supported size"); 1771 return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp))); 1772 } 1773 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1774 {_VSTD::__libcpp_deallocate((void*)__p);} 1775 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1776 {return size_type(~0) / sizeof(_Tp);} 1777 #if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1778 template <class _Up, class... _Args> 1779 _LIBCPP_INLINE_VISIBILITY 1780 void 1781 construct(_Up* __p, _Args&&... __args) 1782 { 1783 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1784 } 1785 #else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1786 _LIBCPP_INLINE_VISIBILITY 1787 void 1788 construct(pointer __p) 1789 { 1790 ::new((void*)__p) _Tp(); 1791 } 1792 # if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1793 1794 template <class _A0> 1795 _LIBCPP_INLINE_VISIBILITY 1796 void 1797 construct(pointer __p, _A0& __a0) 1798 { 1799 ::new((void*)__p) _Tp(__a0); 1800 } 1801 template <class _A0> 1802 _LIBCPP_INLINE_VISIBILITY 1803 void 1804 construct(pointer __p, const _A0& __a0) 1805 { 1806 ::new((void*)__p) _Tp(__a0); 1807 } 1808 # endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1809 template <class _A0, class _A1> 1810 _LIBCPP_INLINE_VISIBILITY 1811 void 1812 construct(pointer __p, _A0& __a0, _A1& __a1) 1813 { 1814 ::new((void*)__p) _Tp(__a0, __a1); 1815 } 1816 template <class _A0, class _A1> 1817 _LIBCPP_INLINE_VISIBILITY 1818 void 1819 construct(pointer __p, const _A0& __a0, _A1& __a1) 1820 { 1821 ::new((void*)__p) _Tp(__a0, __a1); 1822 } 1823 template <class _A0, class _A1> 1824 _LIBCPP_INLINE_VISIBILITY 1825 void 1826 construct(pointer __p, _A0& __a0, const _A1& __a1) 1827 { 1828 ::new((void*)__p) _Tp(__a0, __a1); 1829 } 1830 template <class _A0, class _A1> 1831 _LIBCPP_INLINE_VISIBILITY 1832 void 1833 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1834 { 1835 ::new((void*)__p) _Tp(__a0, __a1); 1836 } 1837 #endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1838 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1839 }; 1840 1841 template <class _Tp> 1842 class _LIBCPP_TEMPLATE_VIS allocator<const _Tp> 1843 { 1844 public: 1845 typedef size_t size_type; 1846 typedef ptrdiff_t difference_type; 1847 typedef const _Tp* pointer; 1848 typedef const _Tp* const_pointer; 1849 typedef const _Tp& reference; 1850 typedef const _Tp& const_reference; 1851 typedef const _Tp value_type; 1852 1853 typedef true_type propagate_on_container_move_assignment; 1854 typedef true_type is_always_equal; 1855 1856 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1857 1858 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1859 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1860 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1861 {return _VSTD::addressof(__x);} 1862 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1863 { 1864 if (__n > max_size()) 1865 __throw_length_error("allocator<const T>::allocate(size_t n)" 1866 " 'n' exceeds maximum supported size"); 1867 return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp))); 1868 } 1869 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1870 {_VSTD::__libcpp_deallocate((void*)__p);} 1871 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1872 {return size_type(~0) / sizeof(_Tp);} 1873 #if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1874 template <class _Up, class... _Args> 1875 _LIBCPP_INLINE_VISIBILITY 1876 void 1877 construct(_Up* __p, _Args&&... __args) 1878 { 1879 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1880 } 1881 #else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1882 _LIBCPP_INLINE_VISIBILITY 1883 void 1884 construct(pointer __p) 1885 { 1886 ::new((void*)__p) _Tp(); 1887 } 1888 # if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1889 1890 template <class _A0> 1891 _LIBCPP_INLINE_VISIBILITY 1892 void 1893 construct(pointer __p, _A0& __a0) 1894 { 1895 ::new((void*)__p) _Tp(__a0); 1896 } 1897 template <class _A0> 1898 _LIBCPP_INLINE_VISIBILITY 1899 void 1900 construct(pointer __p, const _A0& __a0) 1901 { 1902 ::new((void*)__p) _Tp(__a0); 1903 } 1904 # endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1905 template <class _A0, class _A1> 1906 _LIBCPP_INLINE_VISIBILITY 1907 void 1908 construct(pointer __p, _A0& __a0, _A1& __a1) 1909 { 1910 ::new((void*)__p) _Tp(__a0, __a1); 1911 } 1912 template <class _A0, class _A1> 1913 _LIBCPP_INLINE_VISIBILITY 1914 void 1915 construct(pointer __p, const _A0& __a0, _A1& __a1) 1916 { 1917 ::new((void*)__p) _Tp(__a0, __a1); 1918 } 1919 template <class _A0, class _A1> 1920 _LIBCPP_INLINE_VISIBILITY 1921 void 1922 construct(pointer __p, _A0& __a0, const _A1& __a1) 1923 { 1924 ::new((void*)__p) _Tp(__a0, __a1); 1925 } 1926 template <class _A0, class _A1> 1927 _LIBCPP_INLINE_VISIBILITY 1928 void 1929 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1930 { 1931 ::new((void*)__p) _Tp(__a0, __a1); 1932 } 1933 #endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1934 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1935 }; 1936 1937 template <class _Tp, class _Up> 1938 inline _LIBCPP_INLINE_VISIBILITY 1939 bool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;} 1940 1941 template <class _Tp, class _Up> 1942 inline _LIBCPP_INLINE_VISIBILITY 1943 bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;} 1944 1945 template <class _OutputIterator, class _Tp> 1946 class _LIBCPP_TEMPLATE_VIS raw_storage_iterator 1947 : public iterator<output_iterator_tag, 1948 _Tp, // purposefully not C++03 1949 ptrdiff_t, // purposefully not C++03 1950 _Tp*, // purposefully not C++03 1951 raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03 1952 { 1953 private: 1954 _OutputIterator __x_; 1955 public: 1956 _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} 1957 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;} 1958 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element) 1959 {::new(&*__x_) _Tp(__element); return *this;} 1960 #if _LIBCPP_STD_VER >= 14 1961 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element) 1962 {::new(&*__x_) _Tp(_VSTD::move(__element)); return *this;} 1963 #endif 1964 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;} 1965 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int) 1966 {raw_storage_iterator __t(*this); ++__x_; return __t;} 1967 #if _LIBCPP_STD_VER >= 14 1968 _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; } 1969 #endif 1970 }; 1971 1972 template <class _Tp> 1973 pair<_Tp*, ptrdiff_t> 1974 get_temporary_buffer(ptrdiff_t __n) _NOEXCEPT 1975 { 1976 pair<_Tp*, ptrdiff_t> __r(0, 0); 1977 const ptrdiff_t __m = (~ptrdiff_t(0) ^ 1978 ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1))) 1979 / sizeof(_Tp); 1980 if (__n > __m) 1981 __n = __m; 1982 while (__n > 0) 1983 { 1984 __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow)); 1985 if (__r.first) 1986 { 1987 __r.second = __n; 1988 break; 1989 } 1990 __n /= 2; 1991 } 1992 return __r; 1993 } 1994 1995 template <class _Tp> 1996 inline _LIBCPP_INLINE_VISIBILITY 1997 void return_temporary_buffer(_Tp* __p) _NOEXCEPT {::operator delete(__p);} 1998 1999 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 2000 template <class _Tp> 2001 struct auto_ptr_ref 2002 { 2003 _Tp* __ptr_; 2004 }; 2005 2006 template<class _Tp> 2007 class _LIBCPP_TEMPLATE_VIS auto_ptr 2008 { 2009 private: 2010 _Tp* __ptr_; 2011 public: 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 2050 template <> 2051 class _LIBCPP_TEMPLATE_VIS auto_ptr<void> 2052 { 2053 public: 2054 typedef void element_type; 2055 }; 2056 #endif 2057 2058 template <class _T1, class _T2, bool = is_same<typename remove_cv<_T1>::type, 2059 typename remove_cv<_T2>::type>::value, 2060 bool = is_empty<_T1>::value 2061 && !__libcpp_is_final<_T1>::value, 2062 bool = is_empty<_T2>::value 2063 && !__libcpp_is_final<_T2>::value 2064 > 2065 struct __libcpp_compressed_pair_switch; 2066 2067 template <class _T1, class _T2, bool IsSame> 2068 struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, false> {enum {value = 0};}; 2069 2070 template <class _T1, class _T2, bool IsSame> 2071 struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, true, false> {enum {value = 1};}; 2072 2073 template <class _T1, class _T2, bool IsSame> 2074 struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, true> {enum {value = 2};}; 2075 2076 template <class _T1, class _T2> 2077 struct __libcpp_compressed_pair_switch<_T1, _T2, false, true, true> {enum {value = 3};}; 2078 2079 template <class _T1, class _T2> 2080 struct __libcpp_compressed_pair_switch<_T1, _T2, true, true, true> {enum {value = 1};}; 2081 2082 template <class _T1, class _T2, unsigned = __libcpp_compressed_pair_switch<_T1, _T2>::value> 2083 class __libcpp_compressed_pair_imp; 2084 2085 template <class _T1, class _T2> 2086 class __libcpp_compressed_pair_imp<_T1, _T2, 0> 2087 { 2088 private: 2089 _T1 __first_; 2090 _T2 __second_; 2091 public: 2092 typedef _T1 _T1_param; 2093 typedef _T2 _T2_param; 2094 2095 typedef typename remove_reference<_T1>::type& _T1_reference; 2096 typedef typename remove_reference<_T2>::type& _T2_reference; 2097 2098 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 2099 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 2100 2101 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __first_(), __second_() {} 2102 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2103 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_() {} 2104 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2105 : __first_(), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2106 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2107 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2108 2109 #ifndef _LIBCPP_HAS_NO_VARIADICS 2110 2111 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2112 _LIBCPP_INLINE_VISIBILITY 2113 __libcpp_compressed_pair_imp(piecewise_construct_t, 2114 tuple<_Args1...> __first_args, 2115 tuple<_Args2...> __second_args, 2116 __tuple_indices<_I1...>, 2117 __tuple_indices<_I2...>) 2118 : __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2119 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2120 {} 2121 2122 #endif // _LIBCPP_HAS_NO_VARIADICS 2123 2124 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2125 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2126 2127 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2128 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2129 2130 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2131 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2132 __is_nothrow_swappable<_T2>::value) 2133 { 2134 using _VSTD::swap; 2135 swap(__first_, __x.__first_); 2136 swap(__second_, __x.__second_); 2137 } 2138 }; 2139 2140 template <class _T1, class _T2> 2141 class __libcpp_compressed_pair_imp<_T1, _T2, 1> 2142 : private _T1 2143 { 2144 private: 2145 _T2 __second_; 2146 public: 2147 typedef _T1 _T1_param; 2148 typedef _T2 _T2_param; 2149 2150 typedef _T1& _T1_reference; 2151 typedef typename remove_reference<_T2>::type& _T2_reference; 2152 2153 typedef const _T1& _T1_const_reference; 2154 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 2155 2156 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __second_() {} 2157 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2158 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_() {} 2159 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2160 : __second_(_VSTD::forward<_T2_param>(__t2)) {} 2161 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2162 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2163 2164 #ifndef _LIBCPP_HAS_NO_VARIADICS 2165 2166 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2167 _LIBCPP_INLINE_VISIBILITY 2168 __libcpp_compressed_pair_imp(piecewise_construct_t, 2169 tuple<_Args1...> __first_args, 2170 tuple<_Args2...> __second_args, 2171 __tuple_indices<_I1...>, 2172 __tuple_indices<_I2...>) 2173 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2174 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2175 {} 2176 2177 #endif // _LIBCPP_HAS_NO_VARIADICS 2178 2179 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2180 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2181 2182 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2183 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2184 2185 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2186 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2187 __is_nothrow_swappable<_T2>::value) 2188 { 2189 using _VSTD::swap; 2190 swap(__second_, __x.__second_); 2191 } 2192 }; 2193 2194 template <class _T1, class _T2> 2195 class __libcpp_compressed_pair_imp<_T1, _T2, 2> 2196 : private _T2 2197 { 2198 private: 2199 _T1 __first_; 2200 public: 2201 typedef _T1 _T1_param; 2202 typedef _T2 _T2_param; 2203 2204 typedef typename remove_reference<_T1>::type& _T1_reference; 2205 typedef _T2& _T2_reference; 2206 2207 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 2208 typedef const _T2& _T2_const_reference; 2209 2210 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __first_() {} 2211 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2212 : __first_(_VSTD::forward<_T1_param>(__t1)) {} 2213 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2214 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_() {} 2215 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2216 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2217 is_nothrow_move_constructible<_T2>::value) 2218 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_(_VSTD::forward<_T1_param>(__t1)) {} 2219 2220 #ifndef _LIBCPP_HAS_NO_VARIADICS 2221 2222 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2223 _LIBCPP_INLINE_VISIBILITY 2224 __libcpp_compressed_pair_imp(piecewise_construct_t, 2225 tuple<_Args1...> __first_args, 2226 tuple<_Args2...> __second_args, 2227 __tuple_indices<_I1...>, 2228 __tuple_indices<_I2...>) 2229 : _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...), 2230 __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...) 2231 2232 {} 2233 2234 #endif // _LIBCPP_HAS_NO_VARIADICS 2235 2236 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2237 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2238 2239 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2240 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2241 2242 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2243 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2244 __is_nothrow_swappable<_T2>::value) 2245 { 2246 using _VSTD::swap; 2247 swap(__first_, __x.__first_); 2248 } 2249 }; 2250 2251 template <class _T1, class _T2> 2252 class __libcpp_compressed_pair_imp<_T1, _T2, 3> 2253 : private _T1, 2254 private _T2 2255 { 2256 public: 2257 typedef _T1 _T1_param; 2258 typedef _T2 _T2_param; 2259 2260 typedef _T1& _T1_reference; 2261 typedef _T2& _T2_reference; 2262 2263 typedef const _T1& _T1_const_reference; 2264 typedef const _T2& _T2_const_reference; 2265 2266 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2267 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2268 : _T1(_VSTD::forward<_T1_param>(__t1)) {} 2269 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2270 : _T2(_VSTD::forward<_T2_param>(__t2)) {} 2271 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2272 : _T1(_VSTD::forward<_T1_param>(__t1)), _T2(_VSTD::forward<_T2_param>(__t2)) {} 2273 2274 #ifndef _LIBCPP_HAS_NO_VARIADICS 2275 2276 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2277 _LIBCPP_INLINE_VISIBILITY 2278 __libcpp_compressed_pair_imp(piecewise_construct_t, 2279 tuple<_Args1...> __first_args, 2280 tuple<_Args2...> __second_args, 2281 __tuple_indices<_I1...>, 2282 __tuple_indices<_I2...>) 2283 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2284 _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2285 {} 2286 2287 #endif // _LIBCPP_HAS_NO_VARIADICS 2288 2289 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2290 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2291 2292 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2293 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2294 2295 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp&) 2296 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2297 __is_nothrow_swappable<_T2>::value) 2298 { 2299 } 2300 }; 2301 2302 template <class _T1, class _T2> 2303 class __compressed_pair 2304 : private __libcpp_compressed_pair_imp<_T1, _T2> 2305 { 2306 typedef __libcpp_compressed_pair_imp<_T1, _T2> base; 2307 public: 2308 typedef typename base::_T1_param _T1_param; 2309 typedef typename base::_T2_param _T2_param; 2310 2311 typedef typename base::_T1_reference _T1_reference; 2312 typedef typename base::_T2_reference _T2_reference; 2313 2314 typedef typename base::_T1_const_reference _T1_const_reference; 2315 typedef typename base::_T2_const_reference _T2_const_reference; 2316 2317 _LIBCPP_INLINE_VISIBILITY __compressed_pair() {} 2318 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T1_param __t1) 2319 : base(_VSTD::forward<_T1_param>(__t1)) {} 2320 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T2_param __t2) 2321 : base(_VSTD::forward<_T2_param>(__t2)) {} 2322 _LIBCPP_INLINE_VISIBILITY __compressed_pair(_T1_param __t1, _T2_param __t2) 2323 : base(_VSTD::forward<_T1_param>(__t1), _VSTD::forward<_T2_param>(__t2)) {} 2324 2325 #ifndef _LIBCPP_HAS_NO_VARIADICS 2326 2327 template <class... _Args1, class... _Args2> 2328 _LIBCPP_INLINE_VISIBILITY 2329 __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args, 2330 tuple<_Args2...> __second_args) 2331 : base(__pc, _VSTD::move(__first_args), _VSTD::move(__second_args), 2332 typename __make_tuple_indices<sizeof...(_Args1)>::type(), 2333 typename __make_tuple_indices<sizeof...(_Args2) >::type()) 2334 {} 2335 2336 #endif // _LIBCPP_HAS_NO_VARIADICS 2337 2338 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return base::first();} 2339 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return base::first();} 2340 2341 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return base::second();} 2342 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return base::second();} 2343 2344 _LIBCPP_INLINE_VISIBILITY void swap(__compressed_pair& __x) 2345 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2346 __is_nothrow_swappable<_T2>::value) 2347 {base::swap(__x);} 2348 }; 2349 2350 template <class _T1, class _T2> 2351 inline _LIBCPP_INLINE_VISIBILITY 2352 void 2353 swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y) 2354 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2355 __is_nothrow_swappable<_T2>::value) 2356 {__x.swap(__y);} 2357 2358 // __same_or_less_cv_qualified 2359 2360 template <class _Ptr1, class _Ptr2, 2361 bool = is_same<typename remove_cv<typename pointer_traits<_Ptr1>::element_type>::type, 2362 typename remove_cv<typename pointer_traits<_Ptr2>::element_type>::type 2363 >::value 2364 > 2365 struct __same_or_less_cv_qualified_imp 2366 : is_convertible<_Ptr1, _Ptr2> {}; 2367 2368 template <class _Ptr1, class _Ptr2> 2369 struct __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2, false> 2370 : false_type {}; 2371 2372 template <class _Ptr1, class _Ptr2, bool = is_pointer<_Ptr1>::value || 2373 is_same<_Ptr1, _Ptr2>::value || 2374 __has_element_type<_Ptr1>::value> 2375 struct __same_or_less_cv_qualified 2376 : __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2> {}; 2377 2378 template <class _Ptr1, class _Ptr2> 2379 struct __same_or_less_cv_qualified<_Ptr1, _Ptr2, false> 2380 : false_type {}; 2381 2382 // default_delete 2383 2384 template <class _Tp> 2385 struct _LIBCPP_TEMPLATE_VIS default_delete 2386 { 2387 #ifndef _LIBCPP_CXX03_LANG 2388 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2389 #else 2390 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2391 #endif 2392 template <class _Up> 2393 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up>&, 2394 typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2395 _LIBCPP_INLINE_VISIBILITY void operator() (_Tp* __ptr) const _NOEXCEPT 2396 { 2397 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2398 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type"); 2399 delete __ptr; 2400 } 2401 }; 2402 2403 template <class _Tp> 2404 struct _LIBCPP_TEMPLATE_VIS default_delete<_Tp[]> 2405 { 2406 public: 2407 #ifndef _LIBCPP_CXX03_LANG 2408 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2409 #else 2410 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2411 #endif 2412 template <class _Up> 2413 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up[]>&, 2414 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2415 template <class _Up> 2416 _LIBCPP_INLINE_VISIBILITY 2417 void operator() (_Up* __ptr, 2418 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) const _NOEXCEPT 2419 { 2420 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2421 static_assert(!is_void<_Tp>::value, "default_delete can not delete void type"); 2422 delete [] __ptr; 2423 } 2424 }; 2425 2426 template <class _Tp, class _Dp = default_delete<_Tp> > 2427 class _LIBCPP_TEMPLATE_VIS unique_ptr 2428 { 2429 public: 2430 typedef _Tp element_type; 2431 typedef _Dp deleter_type; 2432 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2433 private: 2434 __compressed_pair<pointer, deleter_type> __ptr_; 2435 2436 #ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2437 unique_ptr(unique_ptr&); 2438 template <class _Up, class _Ep> 2439 unique_ptr(unique_ptr<_Up, _Ep>&); 2440 unique_ptr& operator=(unique_ptr&); 2441 template <class _Up, class _Ep> 2442 unique_ptr& operator=(unique_ptr<_Up, _Ep>&); 2443 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2444 2445 struct __nat {int __for_bool_;}; 2446 2447 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2448 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2449 public: 2450 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2451 : __ptr_(pointer()) 2452 { 2453 static_assert(!is_pointer<deleter_type>::value, 2454 "unique_ptr constructed with null function pointer deleter"); 2455 } 2456 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2457 : __ptr_(pointer()) 2458 { 2459 static_assert(!is_pointer<deleter_type>::value, 2460 "unique_ptr constructed with null function pointer deleter"); 2461 } 2462 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) _NOEXCEPT 2463 : __ptr_(_VSTD::move(__p)) 2464 { 2465 static_assert(!is_pointer<deleter_type>::value, 2466 "unique_ptr constructed with null function pointer deleter"); 2467 } 2468 2469 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2470 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename conditional< 2471 is_reference<deleter_type>::value, 2472 deleter_type, 2473 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2474 _NOEXCEPT 2475 : __ptr_(__p, __d) {} 2476 2477 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename remove_reference<deleter_type>::type&& __d) 2478 _NOEXCEPT 2479 : __ptr_(__p, _VSTD::move(__d)) 2480 { 2481 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2482 } 2483 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2484 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2485 template <class _Up, class _Ep> 2486 _LIBCPP_INLINE_VISIBILITY 2487 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2488 typename enable_if 2489 < 2490 !is_array<_Up>::value && 2491 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2492 is_convertible<_Ep, deleter_type>::value && 2493 ( 2494 !is_reference<deleter_type>::value || 2495 is_same<deleter_type, _Ep>::value 2496 ), 2497 __nat 2498 >::type = __nat()) _NOEXCEPT 2499 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {} 2500 2501 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 2502 template <class _Up> 2503 _LIBCPP_INLINE_VISIBILITY unique_ptr(auto_ptr<_Up>&& __p, 2504 typename enable_if< 2505 is_convertible<_Up*, _Tp*>::value && 2506 is_same<_Dp, default_delete<_Tp> >::value, 2507 __nat 2508 >::type = __nat()) _NOEXCEPT 2509 : __ptr_(__p.release()) 2510 { 2511 } 2512 #endif 2513 2514 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2515 { 2516 reset(__u.release()); 2517 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2518 return *this; 2519 } 2520 2521 template <class _Up, class _Ep> 2522 _LIBCPP_INLINE_VISIBILITY 2523 typename enable_if 2524 < 2525 !is_array<_Up>::value && 2526 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2527 is_assignable<deleter_type&, _Ep&&>::value, 2528 unique_ptr& 2529 >::type 2530 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2531 { 2532 reset(__u.release()); 2533 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2534 return *this; 2535 } 2536 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2537 2538 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2539 { 2540 return __rv<unique_ptr>(*this); 2541 } 2542 2543 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2544 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2545 2546 template <class _Up, class _Ep> 2547 _LIBCPP_INLINE_VISIBILITY 2548 typename enable_if< 2549 !is_array<_Up>::value && 2550 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2551 is_assignable<deleter_type&, _Ep&>::value, 2552 unique_ptr& 2553 >::type 2554 operator=(unique_ptr<_Up, _Ep> __u) 2555 { 2556 reset(__u.release()); 2557 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2558 return *this; 2559 } 2560 2561 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2562 : __ptr_(_VSTD::move(__p), _VSTD::move(__d)) {} 2563 2564 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 2565 template <class _Up> 2566 _LIBCPP_INLINE_VISIBILITY 2567 typename enable_if< 2568 is_convertible<_Up*, _Tp*>::value && 2569 is_same<_Dp, default_delete<_Tp> >::value, 2570 unique_ptr& 2571 >::type 2572 operator=(auto_ptr<_Up> __p) 2573 {reset(__p.release()); return *this;} 2574 #endif 2575 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2576 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2577 2578 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2579 { 2580 reset(); 2581 return *this; 2582 } 2583 2584 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator*() const 2585 {return *__ptr_.first();} 2586 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT {return __ptr_.first();} 2587 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2588 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2589 {return __ptr_.second();} 2590 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2591 {return __ptr_.second();} 2592 _LIBCPP_INLINE_VISIBILITY 2593 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2594 {return __ptr_.first() != nullptr;} 2595 2596 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2597 { 2598 pointer __t = __ptr_.first(); 2599 __ptr_.first() = pointer(); 2600 return __t; 2601 } 2602 2603 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) _NOEXCEPT 2604 { 2605 pointer __tmp = __ptr_.first(); 2606 __ptr_.first() = __p; 2607 if (__tmp) 2608 __ptr_.second()(__tmp); 2609 } 2610 2611 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) _NOEXCEPT 2612 {__ptr_.swap(__u.__ptr_);} 2613 }; 2614 2615 template <class _Tp, class _Dp> 2616 class _LIBCPP_TEMPLATE_VIS unique_ptr<_Tp[], _Dp> 2617 { 2618 public: 2619 typedef _Tp element_type; 2620 typedef _Dp deleter_type; 2621 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2622 private: 2623 __compressed_pair<pointer, deleter_type> __ptr_; 2624 2625 #ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2626 unique_ptr(unique_ptr&); 2627 template <class _Up> 2628 unique_ptr(unique_ptr<_Up>&); 2629 unique_ptr& operator=(unique_ptr&); 2630 template <class _Up> 2631 unique_ptr& operator=(unique_ptr<_Up>&); 2632 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2633 2634 struct __nat {int __for_bool_;}; 2635 2636 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2637 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2638 public: 2639 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2640 : __ptr_(pointer()) 2641 { 2642 static_assert(!is_pointer<deleter_type>::value, 2643 "unique_ptr constructed with null function pointer deleter"); 2644 } 2645 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2646 : __ptr_(pointer()) 2647 { 2648 static_assert(!is_pointer<deleter_type>::value, 2649 "unique_ptr constructed with null function pointer deleter"); 2650 } 2651 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2652 template <class _Pp> 2653 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(_Pp __p, 2654 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) _NOEXCEPT 2655 : __ptr_(__p) 2656 { 2657 static_assert(!is_pointer<deleter_type>::value, 2658 "unique_ptr constructed with null function pointer deleter"); 2659 } 2660 2661 template <class _Pp> 2662 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, typename conditional< 2663 is_reference<deleter_type>::value, 2664 deleter_type, 2665 typename add_lvalue_reference<const deleter_type>::type>::type __d, 2666 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2667 _NOEXCEPT 2668 : __ptr_(__p, __d) {} 2669 2670 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename conditional< 2671 is_reference<deleter_type>::value, 2672 deleter_type, 2673 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2674 _NOEXCEPT 2675 : __ptr_(pointer(), __d) {} 2676 2677 template <class _Pp> 2678 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, 2679 typename remove_reference<deleter_type>::type&& __d, 2680 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2681 _NOEXCEPT 2682 : __ptr_(__p, _VSTD::move(__d)) 2683 { 2684 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2685 } 2686 2687 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename remove_reference<deleter_type>::type&& __d) 2688 _NOEXCEPT 2689 : __ptr_(pointer(), _VSTD::move(__d)) 2690 { 2691 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2692 } 2693 2694 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2695 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2696 2697 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2698 { 2699 reset(__u.release()); 2700 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2701 return *this; 2702 } 2703 2704 template <class _Up, class _Ep> 2705 _LIBCPP_INLINE_VISIBILITY 2706 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2707 typename enable_if 2708 < 2709 is_array<_Up>::value && 2710 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value 2711 && is_convertible<_Ep, deleter_type>::value && 2712 ( 2713 !is_reference<deleter_type>::value || 2714 is_same<deleter_type, _Ep>::value 2715 ), 2716 __nat 2717 >::type = __nat() 2718 ) _NOEXCEPT 2719 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2720 2721 2722 template <class _Up, class _Ep> 2723 _LIBCPP_INLINE_VISIBILITY 2724 typename enable_if 2725 < 2726 is_array<_Up>::value && 2727 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2728 is_assignable<deleter_type&, _Ep&&>::value, 2729 unique_ptr& 2730 >::type 2731 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2732 { 2733 reset(__u.release()); 2734 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2735 return *this; 2736 } 2737 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2738 2739 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) 2740 : __ptr_(__p) 2741 { 2742 static_assert(!is_pointer<deleter_type>::value, 2743 "unique_ptr constructed with null function pointer deleter"); 2744 } 2745 2746 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2747 : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {} 2748 2749 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, deleter_type __d) 2750 : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {} 2751 2752 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2753 { 2754 return __rv<unique_ptr>(*this); 2755 } 2756 2757 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2758 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2759 2760 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(__rv<unique_ptr> __u) 2761 { 2762 reset(__u->release()); 2763 __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter()); 2764 return *this; 2765 } 2766 2767 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2768 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2769 2770 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2771 { 2772 reset(); 2773 return *this; 2774 } 2775 2776 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator[](size_t __i) const 2777 {return __ptr_.first()[__i];} 2778 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2779 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2780 {return __ptr_.second();} 2781 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2782 {return __ptr_.second();} 2783 _LIBCPP_INLINE_VISIBILITY 2784 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2785 {return __ptr_.first() != nullptr;} 2786 2787 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2788 { 2789 pointer __t = __ptr_.first(); 2790 __ptr_.first() = pointer(); 2791 return __t; 2792 } 2793 2794 template <class _Pp> 2795 _LIBCPP_INLINE_VISIBILITY 2796 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, void>::type 2797 reset(_Pp __p) _NOEXCEPT 2798 { 2799 pointer __tmp = __ptr_.first(); 2800 __ptr_.first() = __p; 2801 if (__tmp) 2802 __ptr_.second()(__tmp); 2803 } 2804 _LIBCPP_INLINE_VISIBILITY void reset(nullptr_t = nullptr) _NOEXCEPT 2805 { 2806 pointer __tmp = __ptr_.first(); 2807 __ptr_.first() = nullptr; 2808 if (__tmp) 2809 __ptr_.second()(__tmp); 2810 } 2811 2812 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);} 2813 private: 2814 2815 #ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2816 template <class _Up> 2817 explicit unique_ptr(_Up); 2818 template <class _Up> 2819 unique_ptr(_Up __u, 2820 typename conditional< 2821 is_reference<deleter_type>::value, 2822 deleter_type, 2823 typename add_lvalue_reference<const deleter_type>::type>::type, 2824 typename enable_if 2825 < 2826 is_convertible<_Up, pointer>::value, 2827 __nat 2828 >::type = __nat()); 2829 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2830 }; 2831 2832 template <class _Tp, class _Dp> 2833 inline _LIBCPP_INLINE_VISIBILITY 2834 typename enable_if< 2835 __is_swappable<_Dp>::value, 2836 void 2837 >::type 2838 swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} 2839 2840 template <class _T1, class _D1, class _T2, class _D2> 2841 inline _LIBCPP_INLINE_VISIBILITY 2842 bool 2843 operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} 2844 2845 template <class _T1, class _D1, class _T2, class _D2> 2846 inline _LIBCPP_INLINE_VISIBILITY 2847 bool 2848 operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} 2849 2850 template <class _T1, class _D1, class _T2, class _D2> 2851 inline _LIBCPP_INLINE_VISIBILITY 2852 bool 2853 operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) 2854 { 2855 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2856 typedef typename unique_ptr<_T2, _D2>::pointer _P2; 2857 typedef typename common_type<_P1, _P2>::type _Vp; 2858 return less<_Vp>()(__x.get(), __y.get()); 2859 } 2860 2861 template <class _T1, class _D1, class _T2, class _D2> 2862 inline _LIBCPP_INLINE_VISIBILITY 2863 bool 2864 operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} 2865 2866 template <class _T1, class _D1, class _T2, class _D2> 2867 inline _LIBCPP_INLINE_VISIBILITY 2868 bool 2869 operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} 2870 2871 template <class _T1, class _D1, class _T2, class _D2> 2872 inline _LIBCPP_INLINE_VISIBILITY 2873 bool 2874 operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} 2875 2876 template <class _T1, class _D1> 2877 inline _LIBCPP_INLINE_VISIBILITY 2878 bool 2879 operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2880 { 2881 return !__x; 2882 } 2883 2884 template <class _T1, class _D1> 2885 inline _LIBCPP_INLINE_VISIBILITY 2886 bool 2887 operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2888 { 2889 return !__x; 2890 } 2891 2892 template <class _T1, class _D1> 2893 inline _LIBCPP_INLINE_VISIBILITY 2894 bool 2895 operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2896 { 2897 return static_cast<bool>(__x); 2898 } 2899 2900 template <class _T1, class _D1> 2901 inline _LIBCPP_INLINE_VISIBILITY 2902 bool 2903 operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2904 { 2905 return static_cast<bool>(__x); 2906 } 2907 2908 template <class _T1, class _D1> 2909 inline _LIBCPP_INLINE_VISIBILITY 2910 bool 2911 operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2912 { 2913 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2914 return less<_P1>()(__x.get(), nullptr); 2915 } 2916 2917 template <class _T1, class _D1> 2918 inline _LIBCPP_INLINE_VISIBILITY 2919 bool 2920 operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2921 { 2922 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2923 return less<_P1>()(nullptr, __x.get()); 2924 } 2925 2926 template <class _T1, class _D1> 2927 inline _LIBCPP_INLINE_VISIBILITY 2928 bool 2929 operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2930 { 2931 return nullptr < __x; 2932 } 2933 2934 template <class _T1, class _D1> 2935 inline _LIBCPP_INLINE_VISIBILITY 2936 bool 2937 operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2938 { 2939 return __x < nullptr; 2940 } 2941 2942 template <class _T1, class _D1> 2943 inline _LIBCPP_INLINE_VISIBILITY 2944 bool 2945 operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2946 { 2947 return !(nullptr < __x); 2948 } 2949 2950 template <class _T1, class _D1> 2951 inline _LIBCPP_INLINE_VISIBILITY 2952 bool 2953 operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2954 { 2955 return !(__x < nullptr); 2956 } 2957 2958 template <class _T1, class _D1> 2959 inline _LIBCPP_INLINE_VISIBILITY 2960 bool 2961 operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2962 { 2963 return !(__x < nullptr); 2964 } 2965 2966 template <class _T1, class _D1> 2967 inline _LIBCPP_INLINE_VISIBILITY 2968 bool 2969 operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2970 { 2971 return !(nullptr < __x); 2972 } 2973 2974 #ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2975 2976 template <class _Tp, class _Dp> 2977 inline _LIBCPP_INLINE_VISIBILITY 2978 unique_ptr<_Tp, _Dp> 2979 move(unique_ptr<_Tp, _Dp>& __t) 2980 { 2981 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t)); 2982 } 2983 2984 #endif 2985 2986 #if _LIBCPP_STD_VER > 11 2987 2988 template<class _Tp> 2989 struct __unique_if 2990 { 2991 typedef unique_ptr<_Tp> __unique_single; 2992 }; 2993 2994 template<class _Tp> 2995 struct __unique_if<_Tp[]> 2996 { 2997 typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; 2998 }; 2999 3000 template<class _Tp, size_t _Np> 3001 struct __unique_if<_Tp[_Np]> 3002 { 3003 typedef void __unique_array_known_bound; 3004 }; 3005 3006 template<class _Tp, class... _Args> 3007 inline _LIBCPP_INLINE_VISIBILITY 3008 typename __unique_if<_Tp>::__unique_single 3009 make_unique(_Args&&... __args) 3010 { 3011 return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...)); 3012 } 3013 3014 template<class _Tp> 3015 inline _LIBCPP_INLINE_VISIBILITY 3016 typename __unique_if<_Tp>::__unique_array_unknown_bound 3017 make_unique(size_t __n) 3018 { 3019 typedef typename remove_extent<_Tp>::type _Up; 3020 return unique_ptr<_Tp>(new _Up[__n]()); 3021 } 3022 3023 template<class _Tp, class... _Args> 3024 typename __unique_if<_Tp>::__unique_array_known_bound 3025 make_unique(_Args&&...) = delete; 3026 3027 #endif // _LIBCPP_STD_VER > 11 3028 3029 template <class _Tp, class _Dp> 3030 #ifdef _LIBCPP_CXX03_LANG 3031 struct _LIBCPP_TEMPLATE_VIS hash<unique_ptr<_Tp, _Dp> > 3032 #else 3033 struct _LIBCPP_TEMPLATE_VIS hash<__enable_hash_helper< 3034 unique_ptr<_Tp, _Dp>, typename unique_ptr<_Tp, _Dp>::pointer>> 3035 #endif 3036 { 3037 typedef unique_ptr<_Tp, _Dp> argument_type; 3038 typedef size_t result_type; 3039 _LIBCPP_INLINE_VISIBILITY 3040 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 3041 { 3042 typedef typename argument_type::pointer pointer; 3043 return hash<pointer>()(__ptr.get()); 3044 } 3045 }; 3046 3047 struct __destruct_n 3048 { 3049 private: 3050 size_t size; 3051 3052 template <class _Tp> 3053 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT 3054 {for (size_t __i = 0; __i < size; ++__i, ++__p) __p->~_Tp();} 3055 3056 template <class _Tp> 3057 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT 3058 {} 3059 3060 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT 3061 {++size;} 3062 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT 3063 {} 3064 3065 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT 3066 {size = __s;} 3067 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT 3068 {} 3069 public: 3070 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT 3071 : size(__s) {} 3072 3073 template <class _Tp> 3074 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT 3075 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3076 3077 template <class _Tp> 3078 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT 3079 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3080 3081 template <class _Tp> 3082 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT 3083 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3084 }; 3085 3086 template <class _Alloc> 3087 class __allocator_destructor 3088 { 3089 typedef allocator_traits<_Alloc> __alloc_traits; 3090 public: 3091 typedef typename __alloc_traits::pointer pointer; 3092 typedef typename __alloc_traits::size_type size_type; 3093 private: 3094 _Alloc& __alloc_; 3095 size_type __s_; 3096 public: 3097 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) 3098 _NOEXCEPT 3099 : __alloc_(__a), __s_(__s) {} 3100 _LIBCPP_INLINE_VISIBILITY 3101 void operator()(pointer __p) _NOEXCEPT 3102 {__alloc_traits::deallocate(__alloc_, __p, __s_);} 3103 }; 3104 3105 template <class _InputIterator, class _ForwardIterator> 3106 _ForwardIterator 3107 uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) 3108 { 3109 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3110 #ifndef _LIBCPP_NO_EXCEPTIONS 3111 _ForwardIterator __s = __r; 3112 try 3113 { 3114 #endif 3115 for (; __f != __l; ++__f, (void) ++__r) 3116 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3117 #ifndef _LIBCPP_NO_EXCEPTIONS 3118 } 3119 catch (...) 3120 { 3121 for (; __s != __r; ++__s) 3122 __s->~value_type(); 3123 throw; 3124 } 3125 #endif 3126 return __r; 3127 } 3128 3129 template <class _InputIterator, class _Size, class _ForwardIterator> 3130 _ForwardIterator 3131 uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) 3132 { 3133 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3134 #ifndef _LIBCPP_NO_EXCEPTIONS 3135 _ForwardIterator __s = __r; 3136 try 3137 { 3138 #endif 3139 for (; __n > 0; ++__f, (void) ++__r, (void) --__n) 3140 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3141 #ifndef _LIBCPP_NO_EXCEPTIONS 3142 } 3143 catch (...) 3144 { 3145 for (; __s != __r; ++__s) 3146 __s->~value_type(); 3147 throw; 3148 } 3149 #endif 3150 return __r; 3151 } 3152 3153 template <class _ForwardIterator, class _Tp> 3154 void 3155 uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) 3156 { 3157 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3158 #ifndef _LIBCPP_NO_EXCEPTIONS 3159 _ForwardIterator __s = __f; 3160 try 3161 { 3162 #endif 3163 for (; __f != __l; ++__f) 3164 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3165 #ifndef _LIBCPP_NO_EXCEPTIONS 3166 } 3167 catch (...) 3168 { 3169 for (; __s != __f; ++__s) 3170 __s->~value_type(); 3171 throw; 3172 } 3173 #endif 3174 } 3175 3176 template <class _ForwardIterator, class _Size, class _Tp> 3177 _ForwardIterator 3178 uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) 3179 { 3180 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3181 #ifndef _LIBCPP_NO_EXCEPTIONS 3182 _ForwardIterator __s = __f; 3183 try 3184 { 3185 #endif 3186 for (; __n > 0; ++__f, (void) --__n) 3187 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3188 #ifndef _LIBCPP_NO_EXCEPTIONS 3189 } 3190 catch (...) 3191 { 3192 for (; __s != __f; ++__s) 3193 __s->~value_type(); 3194 throw; 3195 } 3196 #endif 3197 return __f; 3198 } 3199 3200 #if _LIBCPP_STD_VER > 14 3201 3202 template <class _Tp> 3203 inline _LIBCPP_INLINE_VISIBILITY 3204 void destroy_at(_Tp* __loc) { 3205 _LIBCPP_ASSERT(__loc, "null pointer given to destroy_at"); 3206 __loc->~_Tp(); 3207 } 3208 3209 template <class _ForwardIterator> 3210 inline _LIBCPP_INLINE_VISIBILITY 3211 void destroy(_ForwardIterator __first, _ForwardIterator __last) { 3212 for (; __first != __last; ++__first) 3213 _VSTD::destroy_at(_VSTD::addressof(*__first)); 3214 } 3215 3216 template <class _ForwardIterator, class _Size> 3217 inline _LIBCPP_INLINE_VISIBILITY 3218 _ForwardIterator destroy_n(_ForwardIterator __first, _Size __n) { 3219 for (; __n > 0; (void)++__first, --__n) 3220 _VSTD::destroy_at(_VSTD::addressof(*__first)); 3221 return __first; 3222 } 3223 3224 template <class _ForwardIterator> 3225 inline _LIBCPP_INLINE_VISIBILITY 3226 void uninitialized_default_construct(_ForwardIterator __first, _ForwardIterator __last) { 3227 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3228 auto __idx = __first; 3229 #ifndef _LIBCPP_NO_EXCEPTIONS 3230 try { 3231 #endif 3232 for (; __idx != __last; ++__idx) 3233 ::new((void*)_VSTD::addressof(*__idx)) _Vt; 3234 #ifndef _LIBCPP_NO_EXCEPTIONS 3235 } catch (...) { 3236 _VSTD::destroy(__first, __idx); 3237 throw; 3238 } 3239 #endif 3240 } 3241 3242 template <class _ForwardIterator, class _Size> 3243 inline _LIBCPP_INLINE_VISIBILITY 3244 _ForwardIterator uninitialized_default_construct_n(_ForwardIterator __first, _Size __n) { 3245 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3246 auto __idx = __first; 3247 #ifndef _LIBCPP_NO_EXCEPTIONS 3248 try { 3249 #endif 3250 for (; __n > 0; (void)++__idx, --__n) 3251 ::new((void*)_VSTD::addressof(*__idx)) _Vt; 3252 return __idx; 3253 #ifndef _LIBCPP_NO_EXCEPTIONS 3254 } catch (...) { 3255 _VSTD::destroy(__first, __idx); 3256 throw; 3257 } 3258 #endif 3259 } 3260 3261 3262 template <class _ForwardIterator> 3263 inline _LIBCPP_INLINE_VISIBILITY 3264 void uninitialized_value_construct(_ForwardIterator __first, _ForwardIterator __last) { 3265 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3266 auto __idx = __first; 3267 #ifndef _LIBCPP_NO_EXCEPTIONS 3268 try { 3269 #endif 3270 for (; __idx != __last; ++__idx) 3271 ::new((void*)_VSTD::addressof(*__idx)) _Vt(); 3272 #ifndef _LIBCPP_NO_EXCEPTIONS 3273 } catch (...) { 3274 _VSTD::destroy(__first, __idx); 3275 throw; 3276 } 3277 #endif 3278 } 3279 3280 template <class _ForwardIterator, class _Size> 3281 inline _LIBCPP_INLINE_VISIBILITY 3282 _ForwardIterator uninitialized_value_construct_n(_ForwardIterator __first, _Size __n) { 3283 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3284 auto __idx = __first; 3285 #ifndef _LIBCPP_NO_EXCEPTIONS 3286 try { 3287 #endif 3288 for (; __n > 0; (void)++__idx, --__n) 3289 ::new((void*)_VSTD::addressof(*__idx)) _Vt(); 3290 return __idx; 3291 #ifndef _LIBCPP_NO_EXCEPTIONS 3292 } catch (...) { 3293 _VSTD::destroy(__first, __idx); 3294 throw; 3295 } 3296 #endif 3297 } 3298 3299 3300 template <class _InputIt, class _ForwardIt> 3301 inline _LIBCPP_INLINE_VISIBILITY 3302 _ForwardIt uninitialized_move(_InputIt __first, _InputIt __last, _ForwardIt __first_res) { 3303 using _Vt = typename iterator_traits<_ForwardIt>::value_type; 3304 auto __idx = __first_res; 3305 #ifndef _LIBCPP_NO_EXCEPTIONS 3306 try { 3307 #endif 3308 for (; __first != __last; (void)++__idx, ++__first) 3309 ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first)); 3310 return __idx; 3311 #ifndef _LIBCPP_NO_EXCEPTIONS 3312 } catch (...) { 3313 _VSTD::destroy(__first_res, __idx); 3314 throw; 3315 } 3316 #endif 3317 } 3318 3319 template <class _InputIt, class _Size, class _ForwardIt> 3320 inline _LIBCPP_INLINE_VISIBILITY 3321 pair<_InputIt, _ForwardIt> 3322 uninitialized_move_n(_InputIt __first, _Size __n, _ForwardIt __first_res) { 3323 using _Vt = typename iterator_traits<_ForwardIt>::value_type; 3324 auto __idx = __first_res; 3325 #ifndef _LIBCPP_NO_EXCEPTIONS 3326 try { 3327 #endif 3328 for (; __n > 0; ++__idx, (void)++__first, --__n) 3329 ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first)); 3330 return {__first, __idx}; 3331 #ifndef _LIBCPP_NO_EXCEPTIONS 3332 } catch (...) { 3333 _VSTD::destroy(__first_res, __idx); 3334 throw; 3335 } 3336 #endif 3337 } 3338 3339 3340 #endif // _LIBCPP_STD_VER > 14 3341 3342 // NOTE: Relaxed and acq/rel atomics (for increment and decrement respectively) 3343 // should be sufficient for thread safety. 3344 // See https://bugs.llvm.org/show_bug.cgi?id=22803 3345 #if defined(__clang__) && __has_builtin(__atomic_add_fetch) \ 3346 && defined(__ATOMIC_RELAXED) \ 3347 && defined(__ATOMIC_ACQ_REL) 3348 # define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT 3349 #elif !defined(__clang__) && defined(_GNUC_VER) && _GNUC_VER >= 407 3350 # define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT 3351 #endif 3352 3353 template <class _Tp> 3354 inline _LIBCPP_INLINE_VISIBILITY _Tp 3355 __libcpp_atomic_refcount_increment(_Tp& __t) _NOEXCEPT 3356 { 3357 #if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS) 3358 return __atomic_add_fetch(&__t, 1, __ATOMIC_RELAXED); 3359 #else 3360 return __t += 1; 3361 #endif 3362 } 3363 3364 template <class _Tp> 3365 inline _LIBCPP_INLINE_VISIBILITY _Tp 3366 __libcpp_atomic_refcount_decrement(_Tp& __t) _NOEXCEPT 3367 { 3368 #if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS) 3369 return __atomic_add_fetch(&__t, -1, __ATOMIC_ACQ_REL); 3370 #else 3371 return __t -= 1; 3372 #endif 3373 } 3374 3375 class _LIBCPP_EXCEPTION_ABI bad_weak_ptr 3376 : public std::exception 3377 { 3378 public: 3379 virtual ~bad_weak_ptr() _NOEXCEPT; 3380 virtual const char* what() const _NOEXCEPT; 3381 }; 3382 3383 _LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINE 3384 void __throw_bad_weak_ptr() 3385 { 3386 #ifndef _LIBCPP_NO_EXCEPTIONS 3387 throw bad_weak_ptr(); 3388 #else 3389 _VSTD::abort(); 3390 #endif 3391 } 3392 3393 template<class _Tp> class _LIBCPP_TEMPLATE_VIS weak_ptr; 3394 3395 class _LIBCPP_TYPE_VIS __shared_count 3396 { 3397 __shared_count(const __shared_count&); 3398 __shared_count& operator=(const __shared_count&); 3399 3400 protected: 3401 long __shared_owners_; 3402 virtual ~__shared_count(); 3403 private: 3404 virtual void __on_zero_shared() _NOEXCEPT = 0; 3405 3406 public: 3407 _LIBCPP_INLINE_VISIBILITY 3408 explicit __shared_count(long __refs = 0) _NOEXCEPT 3409 : __shared_owners_(__refs) {} 3410 3411 #if defined(_LIBCPP_BUILDING_MEMORY) && \ 3412 defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS) 3413 void __add_shared() _NOEXCEPT; 3414 bool __release_shared() _NOEXCEPT; 3415 #else 3416 _LIBCPP_INLINE_VISIBILITY 3417 void __add_shared() _NOEXCEPT { 3418 __libcpp_atomic_refcount_increment(__shared_owners_); 3419 } 3420 _LIBCPP_INLINE_VISIBILITY 3421 bool __release_shared() _NOEXCEPT { 3422 if (__libcpp_atomic_refcount_decrement(__shared_owners_) == -1) { 3423 __on_zero_shared(); 3424 return true; 3425 } 3426 return false; 3427 } 3428 #endif 3429 _LIBCPP_INLINE_VISIBILITY 3430 long use_count() const _NOEXCEPT { 3431 return __libcpp_relaxed_load(&__shared_owners_) + 1; 3432 } 3433 }; 3434 3435 class _LIBCPP_TYPE_VIS __shared_weak_count 3436 : private __shared_count 3437 { 3438 long __shared_weak_owners_; 3439 3440 public: 3441 _LIBCPP_INLINE_VISIBILITY 3442 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT 3443 : __shared_count(__refs), 3444 __shared_weak_owners_(__refs) {} 3445 protected: 3446 virtual ~__shared_weak_count(); 3447 3448 public: 3449 #if defined(_LIBCPP_BUILDING_MEMORY) && \ 3450 defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS) 3451 void __add_shared() _NOEXCEPT; 3452 void __add_weak() _NOEXCEPT; 3453 void __release_shared() _NOEXCEPT; 3454 #else 3455 _LIBCPP_INLINE_VISIBILITY 3456 void __add_shared() _NOEXCEPT { 3457 __shared_count::__add_shared(); 3458 } 3459 _LIBCPP_INLINE_VISIBILITY 3460 void __add_weak() _NOEXCEPT { 3461 __libcpp_atomic_refcount_increment(__shared_weak_owners_); 3462 } 3463 _LIBCPP_INLINE_VISIBILITY 3464 void __release_shared() _NOEXCEPT { 3465 if (__shared_count::__release_shared()) 3466 __release_weak(); 3467 } 3468 #endif 3469 void __release_weak() _NOEXCEPT; 3470 _LIBCPP_INLINE_VISIBILITY 3471 long use_count() const _NOEXCEPT {return __shared_count::use_count();} 3472 __shared_weak_count* lock() _NOEXCEPT; 3473 3474 // Define the function out only if we build static libc++ without RTTI. 3475 // Otherwise we may break clients who need to compile their projects with 3476 // -fno-rtti and yet link against a libc++.dylib compiled 3477 // without -fno-rtti. 3478 #if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC) 3479 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3480 #endif 3481 private: 3482 virtual void __on_zero_shared_weak() _NOEXCEPT = 0; 3483 }; 3484 3485 template <class _Tp, class _Dp, class _Alloc> 3486 class __shared_ptr_pointer 3487 : public __shared_weak_count 3488 { 3489 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; 3490 public: 3491 _LIBCPP_INLINE_VISIBILITY 3492 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) 3493 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {} 3494 3495 #ifndef _LIBCPP_NO_RTTI 3496 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3497 #endif 3498 3499 private: 3500 virtual void __on_zero_shared() _NOEXCEPT; 3501 virtual void __on_zero_shared_weak() _NOEXCEPT; 3502 }; 3503 3504 #ifndef _LIBCPP_NO_RTTI 3505 3506 template <class _Tp, class _Dp, class _Alloc> 3507 const void* 3508 __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT 3509 { 3510 return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : 0; 3511 } 3512 3513 #endif // _LIBCPP_NO_RTTI 3514 3515 template <class _Tp, class _Dp, class _Alloc> 3516 void 3517 __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT 3518 { 3519 __data_.first().second()(__data_.first().first()); 3520 __data_.first().second().~_Dp(); 3521 } 3522 3523 template <class _Tp, class _Dp, class _Alloc> 3524 void 3525 __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3526 { 3527 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al; 3528 typedef allocator_traits<_Al> _ATraits; 3529 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3530 3531 _Al __a(__data_.second()); 3532 __data_.second().~_Alloc(); 3533 __a.deallocate(_PTraits::pointer_to(*this), 1); 3534 } 3535 3536 template <class _Tp, class _Alloc> 3537 class __shared_ptr_emplace 3538 : public __shared_weak_count 3539 { 3540 __compressed_pair<_Alloc, _Tp> __data_; 3541 public: 3542 #ifndef _LIBCPP_HAS_NO_VARIADICS 3543 3544 _LIBCPP_INLINE_VISIBILITY 3545 __shared_ptr_emplace(_Alloc __a) 3546 : __data_(_VSTD::move(__a)) {} 3547 3548 template <class ..._Args> 3549 _LIBCPP_INLINE_VISIBILITY 3550 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) 3551 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a), 3552 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {} 3553 3554 #else // _LIBCPP_HAS_NO_VARIADICS 3555 3556 _LIBCPP_INLINE_VISIBILITY 3557 __shared_ptr_emplace(_Alloc __a) 3558 : __data_(__a) {} 3559 3560 template <class _A0> 3561 _LIBCPP_INLINE_VISIBILITY 3562 __shared_ptr_emplace(_Alloc __a, _A0& __a0) 3563 : __data_(__a, _Tp(__a0)) {} 3564 3565 template <class _A0, class _A1> 3566 _LIBCPP_INLINE_VISIBILITY 3567 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) 3568 : __data_(__a, _Tp(__a0, __a1)) {} 3569 3570 template <class _A0, class _A1, class _A2> 3571 _LIBCPP_INLINE_VISIBILITY 3572 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) 3573 : __data_(__a, _Tp(__a0, __a1, __a2)) {} 3574 3575 #endif // _LIBCPP_HAS_NO_VARIADICS 3576 3577 private: 3578 virtual void __on_zero_shared() _NOEXCEPT; 3579 virtual void __on_zero_shared_weak() _NOEXCEPT; 3580 public: 3581 _LIBCPP_INLINE_VISIBILITY 3582 _Tp* get() _NOEXCEPT {return &__data_.second();} 3583 }; 3584 3585 template <class _Tp, class _Alloc> 3586 void 3587 __shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT 3588 { 3589 __data_.second().~_Tp(); 3590 } 3591 3592 template <class _Tp, class _Alloc> 3593 void 3594 __shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3595 { 3596 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type _Al; 3597 typedef allocator_traits<_Al> _ATraits; 3598 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3599 _Al __a(__data_.first()); 3600 __data_.first().~_Alloc(); 3601 __a.deallocate(_PTraits::pointer_to(*this), 1); 3602 } 3603 3604 template<class _Tp> class _LIBCPP_TEMPLATE_VIS enable_shared_from_this; 3605 3606 template<class _Tp> 3607 class _LIBCPP_TEMPLATE_VIS shared_ptr 3608 { 3609 public: 3610 typedef _Tp element_type; 3611 3612 #if _LIBCPP_STD_VER > 14 3613 typedef weak_ptr<_Tp> weak_type; 3614 #endif 3615 private: 3616 element_type* __ptr_; 3617 __shared_weak_count* __cntrl_; 3618 3619 struct __nat {int __for_bool_;}; 3620 public: 3621 _LIBCPP_INLINE_VISIBILITY 3622 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT; 3623 _LIBCPP_INLINE_VISIBILITY 3624 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT; 3625 template<class _Yp> 3626 explicit shared_ptr(_Yp* __p, 3627 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3628 template<class _Yp, class _Dp> 3629 shared_ptr(_Yp* __p, _Dp __d, 3630 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3631 template<class _Yp, class _Dp, class _Alloc> 3632 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 3633 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3634 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); 3635 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); 3636 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT; 3637 _LIBCPP_INLINE_VISIBILITY 3638 shared_ptr(const shared_ptr& __r) _NOEXCEPT; 3639 template<class _Yp> 3640 _LIBCPP_INLINE_VISIBILITY 3641 shared_ptr(const shared_ptr<_Yp>& __r, 3642 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()) 3643 _NOEXCEPT; 3644 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3645 _LIBCPP_INLINE_VISIBILITY 3646 shared_ptr(shared_ptr&& __r) _NOEXCEPT; 3647 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(shared_ptr<_Yp>&& __r, 3648 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()) 3649 _NOEXCEPT; 3650 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3651 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, 3652 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type= __nat()); 3653 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 3654 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3655 template<class _Yp> 3656 shared_ptr(auto_ptr<_Yp>&& __r, 3657 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3658 #else 3659 template<class _Yp> 3660 shared_ptr(auto_ptr<_Yp> __r, 3661 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3662 #endif 3663 #endif 3664 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3665 template <class _Yp, class _Dp> 3666 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3667 typename enable_if 3668 < 3669 !is_lvalue_reference<_Dp>::value && 3670 !is_array<_Yp>::value && 3671 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3672 __nat 3673 >::type = __nat()); 3674 template <class _Yp, class _Dp> 3675 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3676 typename enable_if 3677 < 3678 is_lvalue_reference<_Dp>::value && 3679 !is_array<_Yp>::value && 3680 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3681 __nat 3682 >::type = __nat()); 3683 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3684 template <class _Yp, class _Dp> 3685 shared_ptr(unique_ptr<_Yp, _Dp>, 3686 typename enable_if 3687 < 3688 !is_lvalue_reference<_Dp>::value && 3689 !is_array<_Yp>::value && 3690 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3691 __nat 3692 >::type = __nat()); 3693 template <class _Yp, class _Dp> 3694 shared_ptr(unique_ptr<_Yp, _Dp>, 3695 typename enable_if 3696 < 3697 is_lvalue_reference<_Dp>::value && 3698 !is_array<_Yp>::value && 3699 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3700 __nat 3701 >::type = __nat()); 3702 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3703 3704 ~shared_ptr(); 3705 3706 _LIBCPP_INLINE_VISIBILITY 3707 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT; 3708 template<class _Yp> 3709 typename enable_if 3710 < 3711 is_convertible<_Yp*, element_type*>::value, 3712 shared_ptr& 3713 >::type 3714 _LIBCPP_INLINE_VISIBILITY 3715 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT; 3716 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3717 _LIBCPP_INLINE_VISIBILITY 3718 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT; 3719 template<class _Yp> 3720 typename enable_if 3721 < 3722 is_convertible<_Yp*, element_type*>::value, 3723 shared_ptr<_Tp>& 3724 >::type 3725 _LIBCPP_INLINE_VISIBILITY 3726 operator=(shared_ptr<_Yp>&& __r); 3727 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 3728 template<class _Yp> 3729 _LIBCPP_INLINE_VISIBILITY 3730 typename enable_if 3731 < 3732 !is_array<_Yp>::value && 3733 is_convertible<_Yp*, element_type*>::value, 3734 shared_ptr 3735 >::type& 3736 operator=(auto_ptr<_Yp>&& __r); 3737 #endif 3738 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3739 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 3740 template<class _Yp> 3741 _LIBCPP_INLINE_VISIBILITY 3742 typename enable_if 3743 < 3744 !is_array<_Yp>::value && 3745 is_convertible<_Yp*, element_type*>::value, 3746 shared_ptr& 3747 >::type 3748 operator=(auto_ptr<_Yp> __r); 3749 #endif 3750 #endif 3751 template <class _Yp, class _Dp> 3752 typename enable_if 3753 < 3754 !is_array<_Yp>::value && 3755 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3756 shared_ptr& 3757 >::type 3758 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3759 _LIBCPP_INLINE_VISIBILITY 3760 operator=(unique_ptr<_Yp, _Dp>&& __r); 3761 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3762 _LIBCPP_INLINE_VISIBILITY 3763 operator=(unique_ptr<_Yp, _Dp> __r); 3764 #endif 3765 3766 _LIBCPP_INLINE_VISIBILITY 3767 void swap(shared_ptr& __r) _NOEXCEPT; 3768 _LIBCPP_INLINE_VISIBILITY 3769 void reset() _NOEXCEPT; 3770 template<class _Yp> 3771 typename enable_if 3772 < 3773 is_convertible<_Yp*, element_type*>::value, 3774 void 3775 >::type 3776 _LIBCPP_INLINE_VISIBILITY 3777 reset(_Yp* __p); 3778 template<class _Yp, class _Dp> 3779 typename enable_if 3780 < 3781 is_convertible<_Yp*, element_type*>::value, 3782 void 3783 >::type 3784 _LIBCPP_INLINE_VISIBILITY 3785 reset(_Yp* __p, _Dp __d); 3786 template<class _Yp, class _Dp, class _Alloc> 3787 typename enable_if 3788 < 3789 is_convertible<_Yp*, element_type*>::value, 3790 void 3791 >::type 3792 _LIBCPP_INLINE_VISIBILITY 3793 reset(_Yp* __p, _Dp __d, _Alloc __a); 3794 3795 _LIBCPP_INLINE_VISIBILITY 3796 element_type* get() const _NOEXCEPT {return __ptr_;} 3797 _LIBCPP_INLINE_VISIBILITY 3798 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT 3799 {return *__ptr_;} 3800 _LIBCPP_INLINE_VISIBILITY 3801 element_type* operator->() const _NOEXCEPT {return __ptr_;} 3802 _LIBCPP_INLINE_VISIBILITY 3803 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;} 3804 _LIBCPP_INLINE_VISIBILITY 3805 bool unique() const _NOEXCEPT {return use_count() == 1;} 3806 _LIBCPP_INLINE_VISIBILITY 3807 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;} 3808 template <class _Up> 3809 _LIBCPP_INLINE_VISIBILITY 3810 bool owner_before(shared_ptr<_Up> const& __p) const 3811 {return __cntrl_ < __p.__cntrl_;} 3812 template <class _Up> 3813 _LIBCPP_INLINE_VISIBILITY 3814 bool owner_before(weak_ptr<_Up> const& __p) const 3815 {return __cntrl_ < __p.__cntrl_;} 3816 _LIBCPP_INLINE_VISIBILITY 3817 bool 3818 __owner_equivalent(const shared_ptr& __p) const 3819 {return __cntrl_ == __p.__cntrl_;} 3820 3821 #ifndef _LIBCPP_NO_RTTI 3822 template <class _Dp> 3823 _LIBCPP_INLINE_VISIBILITY 3824 _Dp* __get_deleter() const _NOEXCEPT 3825 {return (_Dp*)(__cntrl_ ? __cntrl_->__get_deleter(typeid(_Dp)) : 0);} 3826 #endif // _LIBCPP_NO_RTTI 3827 3828 #ifndef _LIBCPP_HAS_NO_VARIADICS 3829 3830 template<class ..._Args> 3831 static 3832 shared_ptr<_Tp> 3833 make_shared(_Args&& ...__args); 3834 3835 template<class _Alloc, class ..._Args> 3836 static 3837 shared_ptr<_Tp> 3838 allocate_shared(const _Alloc& __a, _Args&& ...__args); 3839 3840 #else // _LIBCPP_HAS_NO_VARIADICS 3841 3842 static shared_ptr<_Tp> make_shared(); 3843 3844 template<class _A0> 3845 static shared_ptr<_Tp> make_shared(_A0&); 3846 3847 template<class _A0, class _A1> 3848 static shared_ptr<_Tp> make_shared(_A0&, _A1&); 3849 3850 template<class _A0, class _A1, class _A2> 3851 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); 3852 3853 template<class _Alloc> 3854 static shared_ptr<_Tp> 3855 allocate_shared(const _Alloc& __a); 3856 3857 template<class _Alloc, class _A0> 3858 static shared_ptr<_Tp> 3859 allocate_shared(const _Alloc& __a, _A0& __a0); 3860 3861 template<class _Alloc, class _A0, class _A1> 3862 static shared_ptr<_Tp> 3863 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); 3864 3865 template<class _Alloc, class _A0, class _A1, class _A2> 3866 static shared_ptr<_Tp> 3867 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); 3868 3869 #endif // _LIBCPP_HAS_NO_VARIADICS 3870 3871 private: 3872 3873 template <class _Yp, class _OrigPtr> 3874 _LIBCPP_INLINE_VISIBILITY 3875 void 3876 __enable_weak_this(const enable_shared_from_this<_Yp>* __e, 3877 _OrigPtr* __ptr) _NOEXCEPT 3878 { 3879 typedef typename remove_cv<_Yp>::type _RawYp; 3880 if (__e && __e->__weak_this_.expired()) 3881 { 3882 __e->__weak_this_ = shared_ptr<_RawYp>(*this, 3883 const_cast<_RawYp*>(static_cast<const _Yp*>(__ptr))); 3884 } 3885 } 3886 3887 _LIBCPP_INLINE_VISIBILITY 3888 void __enable_weak_this(const volatile void*, const volatile void*) _NOEXCEPT {} 3889 3890 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr; 3891 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr; 3892 }; 3893 3894 template<class _Tp> 3895 inline 3896 _LIBCPP_CONSTEXPR 3897 shared_ptr<_Tp>::shared_ptr() _NOEXCEPT 3898 : __ptr_(0), 3899 __cntrl_(0) 3900 { 3901 } 3902 3903 template<class _Tp> 3904 inline 3905 _LIBCPP_CONSTEXPR 3906 shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT 3907 : __ptr_(0), 3908 __cntrl_(0) 3909 { 3910 } 3911 3912 template<class _Tp> 3913 template<class _Yp> 3914 shared_ptr<_Tp>::shared_ptr(_Yp* __p, 3915 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 3916 : __ptr_(__p) 3917 { 3918 unique_ptr<_Yp> __hold(__p); 3919 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 3920 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), allocator<_Yp>()); 3921 __hold.release(); 3922 __enable_weak_this(__p, __p); 3923 } 3924 3925 template<class _Tp> 3926 template<class _Yp, class _Dp> 3927 shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, 3928 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 3929 : __ptr_(__p) 3930 { 3931 #ifndef _LIBCPP_NO_EXCEPTIONS 3932 try 3933 { 3934 #endif // _LIBCPP_NO_EXCEPTIONS 3935 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 3936 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Yp>()); 3937 __enable_weak_this(__p, __p); 3938 #ifndef _LIBCPP_NO_EXCEPTIONS 3939 } 3940 catch (...) 3941 { 3942 __d(__p); 3943 throw; 3944 } 3945 #endif // _LIBCPP_NO_EXCEPTIONS 3946 } 3947 3948 template<class _Tp> 3949 template<class _Dp> 3950 shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) 3951 : __ptr_(0) 3952 { 3953 #ifndef _LIBCPP_NO_EXCEPTIONS 3954 try 3955 { 3956 #endif // _LIBCPP_NO_EXCEPTIONS 3957 typedef __shared_ptr_pointer<nullptr_t, _Dp, allocator<_Tp> > _CntrlBlk; 3958 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Tp>()); 3959 #ifndef _LIBCPP_NO_EXCEPTIONS 3960 } 3961 catch (...) 3962 { 3963 __d(__p); 3964 throw; 3965 } 3966 #endif // _LIBCPP_NO_EXCEPTIONS 3967 } 3968 3969 template<class _Tp> 3970 template<class _Yp, class _Dp, class _Alloc> 3971 shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 3972 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 3973 : __ptr_(__p) 3974 { 3975 #ifndef _LIBCPP_NO_EXCEPTIONS 3976 try 3977 { 3978 #endif // _LIBCPP_NO_EXCEPTIONS 3979 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; 3980 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 3981 typedef __allocator_destructor<_A2> _D2; 3982 _A2 __a2(__a); 3983 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 3984 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 3985 _CntrlBlk(__p, __d, __a); 3986 __cntrl_ = _VSTD::addressof(*__hold2.release()); 3987 __enable_weak_this(__p, __p); 3988 #ifndef _LIBCPP_NO_EXCEPTIONS 3989 } 3990 catch (...) 3991 { 3992 __d(__p); 3993 throw; 3994 } 3995 #endif // _LIBCPP_NO_EXCEPTIONS 3996 } 3997 3998 template<class _Tp> 3999 template<class _Dp, class _Alloc> 4000 shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) 4001 : __ptr_(0) 4002 { 4003 #ifndef _LIBCPP_NO_EXCEPTIONS 4004 try 4005 { 4006 #endif // _LIBCPP_NO_EXCEPTIONS 4007 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; 4008 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4009 typedef __allocator_destructor<_A2> _D2; 4010 _A2 __a2(__a); 4011 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4012 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4013 _CntrlBlk(__p, __d, __a); 4014 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4015 #ifndef _LIBCPP_NO_EXCEPTIONS 4016 } 4017 catch (...) 4018 { 4019 __d(__p); 4020 throw; 4021 } 4022 #endif // _LIBCPP_NO_EXCEPTIONS 4023 } 4024 4025 template<class _Tp> 4026 template<class _Yp> 4027 inline 4028 shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT 4029 : __ptr_(__p), 4030 __cntrl_(__r.__cntrl_) 4031 { 4032 if (__cntrl_) 4033 __cntrl_->__add_shared(); 4034 } 4035 4036 template<class _Tp> 4037 inline 4038 shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT 4039 : __ptr_(__r.__ptr_), 4040 __cntrl_(__r.__cntrl_) 4041 { 4042 if (__cntrl_) 4043 __cntrl_->__add_shared(); 4044 } 4045 4046 template<class _Tp> 4047 template<class _Yp> 4048 inline 4049 shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, 4050 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4051 _NOEXCEPT 4052 : __ptr_(__r.__ptr_), 4053 __cntrl_(__r.__cntrl_) 4054 { 4055 if (__cntrl_) 4056 __cntrl_->__add_shared(); 4057 } 4058 4059 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4060 4061 template<class _Tp> 4062 inline 4063 shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT 4064 : __ptr_(__r.__ptr_), 4065 __cntrl_(__r.__cntrl_) 4066 { 4067 __r.__ptr_ = 0; 4068 __r.__cntrl_ = 0; 4069 } 4070 4071 template<class _Tp> 4072 template<class _Yp> 4073 inline 4074 shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, 4075 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4076 _NOEXCEPT 4077 : __ptr_(__r.__ptr_), 4078 __cntrl_(__r.__cntrl_) 4079 { 4080 __r.__ptr_ = 0; 4081 __r.__cntrl_ = 0; 4082 } 4083 4084 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4085 4086 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 4087 template<class _Tp> 4088 template<class _Yp> 4089 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4090 shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r, 4091 #else 4092 shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r, 4093 #endif 4094 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4095 : __ptr_(__r.get()) 4096 { 4097 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4098 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); 4099 __enable_weak_this(__r.get(), __r.get()); 4100 __r.release(); 4101 } 4102 #endif 4103 4104 template<class _Tp> 4105 template <class _Yp, class _Dp> 4106 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4107 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4108 #else 4109 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4110 #endif 4111 typename enable_if 4112 < 4113 !is_lvalue_reference<_Dp>::value && 4114 !is_array<_Yp>::value && 4115 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4116 __nat 4117 >::type) 4118 : __ptr_(__r.get()) 4119 { 4120 #if _LIBCPP_STD_VER > 11 4121 if (__ptr_ == nullptr) 4122 __cntrl_ = nullptr; 4123 else 4124 #endif 4125 { 4126 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4127 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), allocator<_Yp>()); 4128 __enable_weak_this(__r.get(), __r.get()); 4129 } 4130 __r.release(); 4131 } 4132 4133 template<class _Tp> 4134 template <class _Yp, class _Dp> 4135 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4136 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4137 #else 4138 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4139 #endif 4140 typename enable_if 4141 < 4142 is_lvalue_reference<_Dp>::value && 4143 !is_array<_Yp>::value && 4144 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4145 __nat 4146 >::type) 4147 : __ptr_(__r.get()) 4148 { 4149 #if _LIBCPP_STD_VER > 11 4150 if (__ptr_ == nullptr) 4151 __cntrl_ = nullptr; 4152 else 4153 #endif 4154 { 4155 typedef __shared_ptr_pointer<_Yp*, 4156 reference_wrapper<typename remove_reference<_Dp>::type>, 4157 allocator<_Yp> > _CntrlBlk; 4158 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), allocator<_Yp>()); 4159 __enable_weak_this(__r.get(), __r.get()); 4160 } 4161 __r.release(); 4162 } 4163 4164 #ifndef _LIBCPP_HAS_NO_VARIADICS 4165 4166 template<class _Tp> 4167 template<class ..._Args> 4168 shared_ptr<_Tp> 4169 shared_ptr<_Tp>::make_shared(_Args&& ...__args) 4170 { 4171 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4172 typedef allocator<_CntrlBlk> _A2; 4173 typedef __allocator_destructor<_A2> _D2; 4174 _A2 __a2; 4175 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4176 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...); 4177 shared_ptr<_Tp> __r; 4178 __r.__ptr_ = __hold2.get()->get(); 4179 __r.__cntrl_ = __hold2.release(); 4180 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4181 return __r; 4182 } 4183 4184 template<class _Tp> 4185 template<class _Alloc, class ..._Args> 4186 shared_ptr<_Tp> 4187 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) 4188 { 4189 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4190 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4191 typedef __allocator_destructor<_A2> _D2; 4192 _A2 __a2(__a); 4193 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4194 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4195 _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...); 4196 shared_ptr<_Tp> __r; 4197 __r.__ptr_ = __hold2.get()->get(); 4198 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4199 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4200 return __r; 4201 } 4202 4203 #else // _LIBCPP_HAS_NO_VARIADICS 4204 4205 template<class _Tp> 4206 shared_ptr<_Tp> 4207 shared_ptr<_Tp>::make_shared() 4208 { 4209 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4210 typedef allocator<_CntrlBlk> _Alloc2; 4211 typedef __allocator_destructor<_Alloc2> _D2; 4212 _Alloc2 __alloc2; 4213 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4214 ::new(__hold2.get()) _CntrlBlk(__alloc2); 4215 shared_ptr<_Tp> __r; 4216 __r.__ptr_ = __hold2.get()->get(); 4217 __r.__cntrl_ = __hold2.release(); 4218 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4219 return __r; 4220 } 4221 4222 template<class _Tp> 4223 template<class _A0> 4224 shared_ptr<_Tp> 4225 shared_ptr<_Tp>::make_shared(_A0& __a0) 4226 { 4227 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4228 typedef allocator<_CntrlBlk> _Alloc2; 4229 typedef __allocator_destructor<_Alloc2> _D2; 4230 _Alloc2 __alloc2; 4231 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4232 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); 4233 shared_ptr<_Tp> __r; 4234 __r.__ptr_ = __hold2.get()->get(); 4235 __r.__cntrl_ = __hold2.release(); 4236 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4237 return __r; 4238 } 4239 4240 template<class _Tp> 4241 template<class _A0, class _A1> 4242 shared_ptr<_Tp> 4243 shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) 4244 { 4245 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4246 typedef allocator<_CntrlBlk> _Alloc2; 4247 typedef __allocator_destructor<_Alloc2> _D2; 4248 _Alloc2 __alloc2; 4249 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4250 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); 4251 shared_ptr<_Tp> __r; 4252 __r.__ptr_ = __hold2.get()->get(); 4253 __r.__cntrl_ = __hold2.release(); 4254 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4255 return __r; 4256 } 4257 4258 template<class _Tp> 4259 template<class _A0, class _A1, class _A2> 4260 shared_ptr<_Tp> 4261 shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4262 { 4263 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4264 typedef allocator<_CntrlBlk> _Alloc2; 4265 typedef __allocator_destructor<_Alloc2> _D2; 4266 _Alloc2 __alloc2; 4267 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4268 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); 4269 shared_ptr<_Tp> __r; 4270 __r.__ptr_ = __hold2.get()->get(); 4271 __r.__cntrl_ = __hold2.release(); 4272 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4273 return __r; 4274 } 4275 4276 template<class _Tp> 4277 template<class _Alloc> 4278 shared_ptr<_Tp> 4279 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) 4280 { 4281 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4282 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4283 typedef __allocator_destructor<_Alloc2> _D2; 4284 _Alloc2 __alloc2(__a); 4285 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4286 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4287 _CntrlBlk(__a); 4288 shared_ptr<_Tp> __r; 4289 __r.__ptr_ = __hold2.get()->get(); 4290 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4291 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4292 return __r; 4293 } 4294 4295 template<class _Tp> 4296 template<class _Alloc, class _A0> 4297 shared_ptr<_Tp> 4298 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) 4299 { 4300 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4301 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4302 typedef __allocator_destructor<_Alloc2> _D2; 4303 _Alloc2 __alloc2(__a); 4304 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4305 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4306 _CntrlBlk(__a, __a0); 4307 shared_ptr<_Tp> __r; 4308 __r.__ptr_ = __hold2.get()->get(); 4309 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4310 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4311 return __r; 4312 } 4313 4314 template<class _Tp> 4315 template<class _Alloc, class _A0, class _A1> 4316 shared_ptr<_Tp> 4317 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4318 { 4319 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4320 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4321 typedef __allocator_destructor<_Alloc2> _D2; 4322 _Alloc2 __alloc2(__a); 4323 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4324 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4325 _CntrlBlk(__a, __a0, __a1); 4326 shared_ptr<_Tp> __r; 4327 __r.__ptr_ = __hold2.get()->get(); 4328 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4329 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4330 return __r; 4331 } 4332 4333 template<class _Tp> 4334 template<class _Alloc, class _A0, class _A1, class _A2> 4335 shared_ptr<_Tp> 4336 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4337 { 4338 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4339 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4340 typedef __allocator_destructor<_Alloc2> _D2; 4341 _Alloc2 __alloc2(__a); 4342 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4343 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4344 _CntrlBlk(__a, __a0, __a1, __a2); 4345 shared_ptr<_Tp> __r; 4346 __r.__ptr_ = __hold2.get()->get(); 4347 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4348 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4349 return __r; 4350 } 4351 4352 #endif // _LIBCPP_HAS_NO_VARIADICS 4353 4354 template<class _Tp> 4355 shared_ptr<_Tp>::~shared_ptr() 4356 { 4357 if (__cntrl_) 4358 __cntrl_->__release_shared(); 4359 } 4360 4361 template<class _Tp> 4362 inline 4363 shared_ptr<_Tp>& 4364 shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT 4365 { 4366 shared_ptr(__r).swap(*this); 4367 return *this; 4368 } 4369 4370 template<class _Tp> 4371 template<class _Yp> 4372 inline 4373 typename enable_if 4374 < 4375 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4376 shared_ptr<_Tp>& 4377 >::type 4378 shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT 4379 { 4380 shared_ptr(__r).swap(*this); 4381 return *this; 4382 } 4383 4384 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4385 4386 template<class _Tp> 4387 inline 4388 shared_ptr<_Tp>& 4389 shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT 4390 { 4391 shared_ptr(_VSTD::move(__r)).swap(*this); 4392 return *this; 4393 } 4394 4395 template<class _Tp> 4396 template<class _Yp> 4397 inline 4398 typename enable_if 4399 < 4400 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4401 shared_ptr<_Tp>& 4402 >::type 4403 shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) 4404 { 4405 shared_ptr(_VSTD::move(__r)).swap(*this); 4406 return *this; 4407 } 4408 4409 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 4410 template<class _Tp> 4411 template<class _Yp> 4412 inline 4413 typename enable_if 4414 < 4415 !is_array<_Yp>::value && 4416 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4417 shared_ptr<_Tp> 4418 >::type& 4419 shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) 4420 { 4421 shared_ptr(_VSTD::move(__r)).swap(*this); 4422 return *this; 4423 } 4424 #endif 4425 4426 template<class _Tp> 4427 template <class _Yp, class _Dp> 4428 inline 4429 typename enable_if 4430 < 4431 !is_array<_Yp>::value && 4432 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, 4433 typename shared_ptr<_Tp>::element_type*>::value, 4434 shared_ptr<_Tp>& 4435 >::type 4436 shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) 4437 { 4438 shared_ptr(_VSTD::move(__r)).swap(*this); 4439 return *this; 4440 } 4441 4442 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4443 4444 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 4445 template<class _Tp> 4446 template<class _Yp> 4447 inline _LIBCPP_INLINE_VISIBILITY 4448 typename enable_if 4449 < 4450 !is_array<_Yp>::value && 4451 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4452 shared_ptr<_Tp>& 4453 >::type 4454 shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) 4455 { 4456 shared_ptr(__r).swap(*this); 4457 return *this; 4458 } 4459 #endif 4460 4461 template<class _Tp> 4462 template <class _Yp, class _Dp> 4463 inline _LIBCPP_INLINE_VISIBILITY 4464 typename enable_if 4465 < 4466 !is_array<_Yp>::value && 4467 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, 4468 typename shared_ptr<_Tp>::element_type*>::value, 4469 shared_ptr<_Tp>& 4470 >::type 4471 shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) 4472 { 4473 shared_ptr(_VSTD::move(__r)).swap(*this); 4474 return *this; 4475 } 4476 4477 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4478 4479 template<class _Tp> 4480 inline 4481 void 4482 shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT 4483 { 4484 _VSTD::swap(__ptr_, __r.__ptr_); 4485 _VSTD::swap(__cntrl_, __r.__cntrl_); 4486 } 4487 4488 template<class _Tp> 4489 inline 4490 void 4491 shared_ptr<_Tp>::reset() _NOEXCEPT 4492 { 4493 shared_ptr().swap(*this); 4494 } 4495 4496 template<class _Tp> 4497 template<class _Yp> 4498 inline 4499 typename enable_if 4500 < 4501 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4502 void 4503 >::type 4504 shared_ptr<_Tp>::reset(_Yp* __p) 4505 { 4506 shared_ptr(__p).swap(*this); 4507 } 4508 4509 template<class _Tp> 4510 template<class _Yp, class _Dp> 4511 inline 4512 typename enable_if 4513 < 4514 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4515 void 4516 >::type 4517 shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) 4518 { 4519 shared_ptr(__p, __d).swap(*this); 4520 } 4521 4522 template<class _Tp> 4523 template<class _Yp, class _Dp, class _Alloc> 4524 inline 4525 typename enable_if 4526 < 4527 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4528 void 4529 >::type 4530 shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) 4531 { 4532 shared_ptr(__p, __d, __a).swap(*this); 4533 } 4534 4535 #ifndef _LIBCPP_HAS_NO_VARIADICS 4536 4537 template<class _Tp, class ..._Args> 4538 inline _LIBCPP_INLINE_VISIBILITY 4539 typename enable_if 4540 < 4541 !is_array<_Tp>::value, 4542 shared_ptr<_Tp> 4543 >::type 4544 make_shared(_Args&& ...__args) 4545 { 4546 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...); 4547 } 4548 4549 template<class _Tp, class _Alloc, class ..._Args> 4550 inline _LIBCPP_INLINE_VISIBILITY 4551 typename enable_if 4552 < 4553 !is_array<_Tp>::value, 4554 shared_ptr<_Tp> 4555 >::type 4556 allocate_shared(const _Alloc& __a, _Args&& ...__args) 4557 { 4558 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...); 4559 } 4560 4561 #else // _LIBCPP_HAS_NO_VARIADICS 4562 4563 template<class _Tp> 4564 inline _LIBCPP_INLINE_VISIBILITY 4565 shared_ptr<_Tp> 4566 make_shared() 4567 { 4568 return shared_ptr<_Tp>::make_shared(); 4569 } 4570 4571 template<class _Tp, class _A0> 4572 inline _LIBCPP_INLINE_VISIBILITY 4573 shared_ptr<_Tp> 4574 make_shared(_A0& __a0) 4575 { 4576 return shared_ptr<_Tp>::make_shared(__a0); 4577 } 4578 4579 template<class _Tp, class _A0, class _A1> 4580 inline _LIBCPP_INLINE_VISIBILITY 4581 shared_ptr<_Tp> 4582 make_shared(_A0& __a0, _A1& __a1) 4583 { 4584 return shared_ptr<_Tp>::make_shared(__a0, __a1); 4585 } 4586 4587 template<class _Tp, class _A0, class _A1, class _A2> 4588 inline _LIBCPP_INLINE_VISIBILITY 4589 shared_ptr<_Tp> 4590 make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4591 { 4592 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); 4593 } 4594 4595 template<class _Tp, class _Alloc> 4596 inline _LIBCPP_INLINE_VISIBILITY 4597 shared_ptr<_Tp> 4598 allocate_shared(const _Alloc& __a) 4599 { 4600 return shared_ptr<_Tp>::allocate_shared(__a); 4601 } 4602 4603 template<class _Tp, class _Alloc, class _A0> 4604 inline _LIBCPP_INLINE_VISIBILITY 4605 shared_ptr<_Tp> 4606 allocate_shared(const _Alloc& __a, _A0& __a0) 4607 { 4608 return shared_ptr<_Tp>::allocate_shared(__a, __a0); 4609 } 4610 4611 template<class _Tp, class _Alloc, class _A0, class _A1> 4612 inline _LIBCPP_INLINE_VISIBILITY 4613 shared_ptr<_Tp> 4614 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4615 { 4616 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); 4617 } 4618 4619 template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> 4620 inline _LIBCPP_INLINE_VISIBILITY 4621 shared_ptr<_Tp> 4622 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4623 { 4624 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); 4625 } 4626 4627 #endif // _LIBCPP_HAS_NO_VARIADICS 4628 4629 template<class _Tp, class _Up> 4630 inline _LIBCPP_INLINE_VISIBILITY 4631 bool 4632 operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4633 { 4634 return __x.get() == __y.get(); 4635 } 4636 4637 template<class _Tp, class _Up> 4638 inline _LIBCPP_INLINE_VISIBILITY 4639 bool 4640 operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4641 { 4642 return !(__x == __y); 4643 } 4644 4645 template<class _Tp, class _Up> 4646 inline _LIBCPP_INLINE_VISIBILITY 4647 bool 4648 operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4649 { 4650 typedef typename common_type<_Tp*, _Up*>::type _Vp; 4651 return less<_Vp>()(__x.get(), __y.get()); 4652 } 4653 4654 template<class _Tp, class _Up> 4655 inline _LIBCPP_INLINE_VISIBILITY 4656 bool 4657 operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4658 { 4659 return __y < __x; 4660 } 4661 4662 template<class _Tp, class _Up> 4663 inline _LIBCPP_INLINE_VISIBILITY 4664 bool 4665 operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4666 { 4667 return !(__y < __x); 4668 } 4669 4670 template<class _Tp, class _Up> 4671 inline _LIBCPP_INLINE_VISIBILITY 4672 bool 4673 operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4674 { 4675 return !(__x < __y); 4676 } 4677 4678 template<class _Tp> 4679 inline _LIBCPP_INLINE_VISIBILITY 4680 bool 4681 operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4682 { 4683 return !__x; 4684 } 4685 4686 template<class _Tp> 4687 inline _LIBCPP_INLINE_VISIBILITY 4688 bool 4689 operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4690 { 4691 return !__x; 4692 } 4693 4694 template<class _Tp> 4695 inline _LIBCPP_INLINE_VISIBILITY 4696 bool 4697 operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4698 { 4699 return static_cast<bool>(__x); 4700 } 4701 4702 template<class _Tp> 4703 inline _LIBCPP_INLINE_VISIBILITY 4704 bool 4705 operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4706 { 4707 return static_cast<bool>(__x); 4708 } 4709 4710 template<class _Tp> 4711 inline _LIBCPP_INLINE_VISIBILITY 4712 bool 4713 operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4714 { 4715 return less<_Tp*>()(__x.get(), nullptr); 4716 } 4717 4718 template<class _Tp> 4719 inline _LIBCPP_INLINE_VISIBILITY 4720 bool 4721 operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4722 { 4723 return less<_Tp*>()(nullptr, __x.get()); 4724 } 4725 4726 template<class _Tp> 4727 inline _LIBCPP_INLINE_VISIBILITY 4728 bool 4729 operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4730 { 4731 return nullptr < __x; 4732 } 4733 4734 template<class _Tp> 4735 inline _LIBCPP_INLINE_VISIBILITY 4736 bool 4737 operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4738 { 4739 return __x < nullptr; 4740 } 4741 4742 template<class _Tp> 4743 inline _LIBCPP_INLINE_VISIBILITY 4744 bool 4745 operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4746 { 4747 return !(nullptr < __x); 4748 } 4749 4750 template<class _Tp> 4751 inline _LIBCPP_INLINE_VISIBILITY 4752 bool 4753 operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4754 { 4755 return !(__x < nullptr); 4756 } 4757 4758 template<class _Tp> 4759 inline _LIBCPP_INLINE_VISIBILITY 4760 bool 4761 operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4762 { 4763 return !(__x < nullptr); 4764 } 4765 4766 template<class _Tp> 4767 inline _LIBCPP_INLINE_VISIBILITY 4768 bool 4769 operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4770 { 4771 return !(nullptr < __x); 4772 } 4773 4774 template<class _Tp> 4775 inline _LIBCPP_INLINE_VISIBILITY 4776 void 4777 swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT 4778 { 4779 __x.swap(__y); 4780 } 4781 4782 template<class _Tp, class _Up> 4783 inline _LIBCPP_INLINE_VISIBILITY 4784 typename enable_if 4785 < 4786 !is_array<_Tp>::value && !is_array<_Up>::value, 4787 shared_ptr<_Tp> 4788 >::type 4789 static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4790 { 4791 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); 4792 } 4793 4794 template<class _Tp, class _Up> 4795 inline _LIBCPP_INLINE_VISIBILITY 4796 typename enable_if 4797 < 4798 !is_array<_Tp>::value && !is_array<_Up>::value, 4799 shared_ptr<_Tp> 4800 >::type 4801 dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4802 { 4803 _Tp* __p = dynamic_cast<_Tp*>(__r.get()); 4804 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); 4805 } 4806 4807 template<class _Tp, class _Up> 4808 typename enable_if 4809 < 4810 is_array<_Tp>::value == is_array<_Up>::value, 4811 shared_ptr<_Tp> 4812 >::type 4813 const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4814 { 4815 typedef typename remove_extent<_Tp>::type _RTp; 4816 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get())); 4817 } 4818 4819 #ifndef _LIBCPP_NO_RTTI 4820 4821 template<class _Dp, class _Tp> 4822 inline _LIBCPP_INLINE_VISIBILITY 4823 _Dp* 4824 get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT 4825 { 4826 return __p.template __get_deleter<_Dp>(); 4827 } 4828 4829 #endif // _LIBCPP_NO_RTTI 4830 4831 template<class _Tp> 4832 class _LIBCPP_TEMPLATE_VIS weak_ptr 4833 { 4834 public: 4835 typedef _Tp element_type; 4836 private: 4837 element_type* __ptr_; 4838 __shared_weak_count* __cntrl_; 4839 4840 public: 4841 _LIBCPP_INLINE_VISIBILITY 4842 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT; 4843 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r, 4844 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4845 _NOEXCEPT; 4846 _LIBCPP_INLINE_VISIBILITY 4847 weak_ptr(weak_ptr const& __r) _NOEXCEPT; 4848 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r, 4849 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4850 _NOEXCEPT; 4851 4852 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4853 _LIBCPP_INLINE_VISIBILITY 4854 weak_ptr(weak_ptr&& __r) _NOEXCEPT; 4855 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r, 4856 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4857 _NOEXCEPT; 4858 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4859 ~weak_ptr(); 4860 4861 _LIBCPP_INLINE_VISIBILITY 4862 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT; 4863 template<class _Yp> 4864 typename enable_if 4865 < 4866 is_convertible<_Yp*, element_type*>::value, 4867 weak_ptr& 4868 >::type 4869 _LIBCPP_INLINE_VISIBILITY 4870 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT; 4871 4872 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4873 4874 _LIBCPP_INLINE_VISIBILITY 4875 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT; 4876 template<class _Yp> 4877 typename enable_if 4878 < 4879 is_convertible<_Yp*, element_type*>::value, 4880 weak_ptr& 4881 >::type 4882 _LIBCPP_INLINE_VISIBILITY 4883 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT; 4884 4885 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4886 4887 template<class _Yp> 4888 typename enable_if 4889 < 4890 is_convertible<_Yp*, element_type*>::value, 4891 weak_ptr& 4892 >::type 4893 _LIBCPP_INLINE_VISIBILITY 4894 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT; 4895 4896 _LIBCPP_INLINE_VISIBILITY 4897 void swap(weak_ptr& __r) _NOEXCEPT; 4898 _LIBCPP_INLINE_VISIBILITY 4899 void reset() _NOEXCEPT; 4900 4901 _LIBCPP_INLINE_VISIBILITY 4902 long use_count() const _NOEXCEPT 4903 {return __cntrl_ ? __cntrl_->use_count() : 0;} 4904 _LIBCPP_INLINE_VISIBILITY 4905 bool expired() const _NOEXCEPT 4906 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} 4907 shared_ptr<_Tp> lock() const _NOEXCEPT; 4908 template<class _Up> 4909 _LIBCPP_INLINE_VISIBILITY 4910 bool owner_before(const shared_ptr<_Up>& __r) const 4911 {return __cntrl_ < __r.__cntrl_;} 4912 template<class _Up> 4913 _LIBCPP_INLINE_VISIBILITY 4914 bool owner_before(const weak_ptr<_Up>& __r) const 4915 {return __cntrl_ < __r.__cntrl_;} 4916 4917 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr; 4918 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr; 4919 }; 4920 4921 template<class _Tp> 4922 inline 4923 _LIBCPP_CONSTEXPR 4924 weak_ptr<_Tp>::weak_ptr() _NOEXCEPT 4925 : __ptr_(0), 4926 __cntrl_(0) 4927 { 4928 } 4929 4930 template<class _Tp> 4931 inline 4932 weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT 4933 : __ptr_(__r.__ptr_), 4934 __cntrl_(__r.__cntrl_) 4935 { 4936 if (__cntrl_) 4937 __cntrl_->__add_weak(); 4938 } 4939 4940 template<class _Tp> 4941 template<class _Yp> 4942 inline 4943 weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, 4944 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 4945 _NOEXCEPT 4946 : __ptr_(__r.__ptr_), 4947 __cntrl_(__r.__cntrl_) 4948 { 4949 if (__cntrl_) 4950 __cntrl_->__add_weak(); 4951 } 4952 4953 template<class _Tp> 4954 template<class _Yp> 4955 inline 4956 weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, 4957 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 4958 _NOEXCEPT 4959 : __ptr_(__r.__ptr_), 4960 __cntrl_(__r.__cntrl_) 4961 { 4962 if (__cntrl_) 4963 __cntrl_->__add_weak(); 4964 } 4965 4966 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4967 4968 template<class _Tp> 4969 inline 4970 weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT 4971 : __ptr_(__r.__ptr_), 4972 __cntrl_(__r.__cntrl_) 4973 { 4974 __r.__ptr_ = 0; 4975 __r.__cntrl_ = 0; 4976 } 4977 4978 template<class _Tp> 4979 template<class _Yp> 4980 inline 4981 weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r, 4982 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 4983 _NOEXCEPT 4984 : __ptr_(__r.__ptr_), 4985 __cntrl_(__r.__cntrl_) 4986 { 4987 __r.__ptr_ = 0; 4988 __r.__cntrl_ = 0; 4989 } 4990 4991 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4992 4993 template<class _Tp> 4994 weak_ptr<_Tp>::~weak_ptr() 4995 { 4996 if (__cntrl_) 4997 __cntrl_->__release_weak(); 4998 } 4999 5000 template<class _Tp> 5001 inline 5002 weak_ptr<_Tp>& 5003 weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT 5004 { 5005 weak_ptr(__r).swap(*this); 5006 return *this; 5007 } 5008 5009 template<class _Tp> 5010 template<class _Yp> 5011 inline 5012 typename enable_if 5013 < 5014 is_convertible<_Yp*, _Tp*>::value, 5015 weak_ptr<_Tp>& 5016 >::type 5017 weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT 5018 { 5019 weak_ptr(__r).swap(*this); 5020 return *this; 5021 } 5022 5023 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5024 5025 template<class _Tp> 5026 inline 5027 weak_ptr<_Tp>& 5028 weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT 5029 { 5030 weak_ptr(_VSTD::move(__r)).swap(*this); 5031 return *this; 5032 } 5033 5034 template<class _Tp> 5035 template<class _Yp> 5036 inline 5037 typename enable_if 5038 < 5039 is_convertible<_Yp*, _Tp*>::value, 5040 weak_ptr<_Tp>& 5041 >::type 5042 weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT 5043 { 5044 weak_ptr(_VSTD::move(__r)).swap(*this); 5045 return *this; 5046 } 5047 5048 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5049 5050 template<class _Tp> 5051 template<class _Yp> 5052 inline 5053 typename enable_if 5054 < 5055 is_convertible<_Yp*, _Tp*>::value, 5056 weak_ptr<_Tp>& 5057 >::type 5058 weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT 5059 { 5060 weak_ptr(__r).swap(*this); 5061 return *this; 5062 } 5063 5064 template<class _Tp> 5065 inline 5066 void 5067 weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT 5068 { 5069 _VSTD::swap(__ptr_, __r.__ptr_); 5070 _VSTD::swap(__cntrl_, __r.__cntrl_); 5071 } 5072 5073 template<class _Tp> 5074 inline _LIBCPP_INLINE_VISIBILITY 5075 void 5076 swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT 5077 { 5078 __x.swap(__y); 5079 } 5080 5081 template<class _Tp> 5082 inline 5083 void 5084 weak_ptr<_Tp>::reset() _NOEXCEPT 5085 { 5086 weak_ptr().swap(*this); 5087 } 5088 5089 template<class _Tp> 5090 template<class _Yp> 5091 shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, 5092 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 5093 : __ptr_(__r.__ptr_), 5094 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) 5095 { 5096 if (__cntrl_ == 0) 5097 __throw_bad_weak_ptr(); 5098 } 5099 5100 template<class _Tp> 5101 shared_ptr<_Tp> 5102 weak_ptr<_Tp>::lock() const _NOEXCEPT 5103 { 5104 shared_ptr<_Tp> __r; 5105 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; 5106 if (__r.__cntrl_) 5107 __r.__ptr_ = __ptr_; 5108 return __r; 5109 } 5110 5111 #if _LIBCPP_STD_VER > 14 5112 template <class _Tp = void> struct owner_less; 5113 #else 5114 template <class _Tp> struct owner_less; 5115 #endif 5116 5117 template <class _Tp> 5118 struct _LIBCPP_TEMPLATE_VIS owner_less<shared_ptr<_Tp> > 5119 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> 5120 { 5121 typedef bool result_type; 5122 _LIBCPP_INLINE_VISIBILITY 5123 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5124 {return __x.owner_before(__y);} 5125 _LIBCPP_INLINE_VISIBILITY 5126 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5127 {return __x.owner_before(__y);} 5128 _LIBCPP_INLINE_VISIBILITY 5129 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5130 {return __x.owner_before(__y);} 5131 }; 5132 5133 template <class _Tp> 5134 struct _LIBCPP_TEMPLATE_VIS owner_less<weak_ptr<_Tp> > 5135 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> 5136 { 5137 typedef bool result_type; 5138 _LIBCPP_INLINE_VISIBILITY 5139 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5140 {return __x.owner_before(__y);} 5141 _LIBCPP_INLINE_VISIBILITY 5142 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5143 {return __x.owner_before(__y);} 5144 _LIBCPP_INLINE_VISIBILITY 5145 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5146 {return __x.owner_before(__y);} 5147 }; 5148 5149 #if _LIBCPP_STD_VER > 14 5150 template <> 5151 struct _LIBCPP_TEMPLATE_VIS owner_less<void> 5152 { 5153 template <class _Tp, class _Up> 5154 _LIBCPP_INLINE_VISIBILITY 5155 bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const 5156 {return __x.owner_before(__y);} 5157 template <class _Tp, class _Up> 5158 _LIBCPP_INLINE_VISIBILITY 5159 bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const 5160 {return __x.owner_before(__y);} 5161 template <class _Tp, class _Up> 5162 _LIBCPP_INLINE_VISIBILITY 5163 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const 5164 {return __x.owner_before(__y);} 5165 template <class _Tp, class _Up> 5166 _LIBCPP_INLINE_VISIBILITY 5167 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const 5168 {return __x.owner_before(__y);} 5169 typedef void is_transparent; 5170 }; 5171 #endif 5172 5173 template<class _Tp> 5174 class _LIBCPP_TEMPLATE_VIS enable_shared_from_this 5175 { 5176 mutable weak_ptr<_Tp> __weak_this_; 5177 protected: 5178 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 5179 enable_shared_from_this() _NOEXCEPT {} 5180 _LIBCPP_INLINE_VISIBILITY 5181 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {} 5182 _LIBCPP_INLINE_VISIBILITY 5183 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT 5184 {return *this;} 5185 _LIBCPP_INLINE_VISIBILITY 5186 ~enable_shared_from_this() {} 5187 public: 5188 _LIBCPP_INLINE_VISIBILITY 5189 shared_ptr<_Tp> shared_from_this() 5190 {return shared_ptr<_Tp>(__weak_this_);} 5191 _LIBCPP_INLINE_VISIBILITY 5192 shared_ptr<_Tp const> shared_from_this() const 5193 {return shared_ptr<const _Tp>(__weak_this_);} 5194 5195 #if _LIBCPP_STD_VER > 14 5196 _LIBCPP_INLINE_VISIBILITY 5197 weak_ptr<_Tp> weak_from_this() _NOEXCEPT 5198 { return __weak_this_; } 5199 5200 _LIBCPP_INLINE_VISIBILITY 5201 weak_ptr<const _Tp> weak_from_this() const _NOEXCEPT 5202 { return __weak_this_; } 5203 #endif // _LIBCPP_STD_VER > 14 5204 5205 template <class _Up> friend class shared_ptr; 5206 }; 5207 5208 template <class _Tp> 5209 struct _LIBCPP_TEMPLATE_VIS hash<shared_ptr<_Tp> > 5210 { 5211 typedef shared_ptr<_Tp> argument_type; 5212 typedef size_t result_type; 5213 5214 _LIBCPP_INLINE_VISIBILITY 5215 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 5216 { 5217 return hash<_Tp*>()(__ptr.get()); 5218 } 5219 }; 5220 5221 template<class _CharT, class _Traits, class _Yp> 5222 inline _LIBCPP_INLINE_VISIBILITY 5223 basic_ostream<_CharT, _Traits>& 5224 operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p); 5225 5226 5227 #if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 5228 5229 class _LIBCPP_TYPE_VIS __sp_mut 5230 { 5231 void* __lx; 5232 public: 5233 void lock() _NOEXCEPT; 5234 void unlock() _NOEXCEPT; 5235 5236 private: 5237 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT; 5238 __sp_mut(const __sp_mut&); 5239 __sp_mut& operator=(const __sp_mut&); 5240 5241 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5242 }; 5243 5244 _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5245 5246 template <class _Tp> 5247 inline _LIBCPP_INLINE_VISIBILITY 5248 bool 5249 atomic_is_lock_free(const shared_ptr<_Tp>*) 5250 { 5251 return false; 5252 } 5253 5254 template <class _Tp> 5255 shared_ptr<_Tp> 5256 atomic_load(const shared_ptr<_Tp>* __p) 5257 { 5258 __sp_mut& __m = __get_sp_mut(__p); 5259 __m.lock(); 5260 shared_ptr<_Tp> __q = *__p; 5261 __m.unlock(); 5262 return __q; 5263 } 5264 5265 template <class _Tp> 5266 inline _LIBCPP_INLINE_VISIBILITY 5267 shared_ptr<_Tp> 5268 atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) 5269 { 5270 return atomic_load(__p); 5271 } 5272 5273 template <class _Tp> 5274 void 5275 atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5276 { 5277 __sp_mut& __m = __get_sp_mut(__p); 5278 __m.lock(); 5279 __p->swap(__r); 5280 __m.unlock(); 5281 } 5282 5283 template <class _Tp> 5284 inline _LIBCPP_INLINE_VISIBILITY 5285 void 5286 atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5287 { 5288 atomic_store(__p, __r); 5289 } 5290 5291 template <class _Tp> 5292 shared_ptr<_Tp> 5293 atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5294 { 5295 __sp_mut& __m = __get_sp_mut(__p); 5296 __m.lock(); 5297 __p->swap(__r); 5298 __m.unlock(); 5299 return __r; 5300 } 5301 5302 template <class _Tp> 5303 inline _LIBCPP_INLINE_VISIBILITY 5304 shared_ptr<_Tp> 5305 atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5306 { 5307 return atomic_exchange(__p, __r); 5308 } 5309 5310 template <class _Tp> 5311 bool 5312 atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5313 { 5314 shared_ptr<_Tp> __temp; 5315 __sp_mut& __m = __get_sp_mut(__p); 5316 __m.lock(); 5317 if (__p->__owner_equivalent(*__v)) 5318 { 5319 _VSTD::swap(__temp, *__p); 5320 *__p = __w; 5321 __m.unlock(); 5322 return true; 5323 } 5324 _VSTD::swap(__temp, *__v); 5325 *__v = *__p; 5326 __m.unlock(); 5327 return false; 5328 } 5329 5330 template <class _Tp> 5331 inline _LIBCPP_INLINE_VISIBILITY 5332 bool 5333 atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5334 { 5335 return atomic_compare_exchange_strong(__p, __v, __w); 5336 } 5337 5338 template <class _Tp> 5339 inline _LIBCPP_INLINE_VISIBILITY 5340 bool 5341 atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5342 shared_ptr<_Tp> __w, memory_order, memory_order) 5343 { 5344 return atomic_compare_exchange_strong(__p, __v, __w); 5345 } 5346 5347 template <class _Tp> 5348 inline _LIBCPP_INLINE_VISIBILITY 5349 bool 5350 atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5351 shared_ptr<_Tp> __w, memory_order, memory_order) 5352 { 5353 return atomic_compare_exchange_weak(__p, __v, __w); 5354 } 5355 5356 #endif // !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 5357 5358 //enum class 5359 #if defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) 5360 # ifndef _LIBCPP_CXX03_LANG 5361 enum class pointer_safety : unsigned char { 5362 relaxed, 5363 preferred, 5364 strict 5365 }; 5366 # endif 5367 #else 5368 struct _LIBCPP_TYPE_VIS pointer_safety 5369 { 5370 enum __lx 5371 { 5372 relaxed, 5373 preferred, 5374 strict 5375 }; 5376 5377 __lx __v_; 5378 5379 _LIBCPP_INLINE_VISIBILITY 5380 pointer_safety() : __v_() {} 5381 5382 _LIBCPP_INLINE_VISIBILITY 5383 pointer_safety(__lx __v) : __v_(__v) {} 5384 _LIBCPP_INLINE_VISIBILITY 5385 operator int() const {return __v_;} 5386 }; 5387 #endif 5388 5389 #if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) && \ 5390 defined(_LIBCPP_BUILDING_MEMORY) 5391 _LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT; 5392 #else 5393 // This function is only offered in C++03 under ABI v1. 5394 # if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) || !defined(_LIBCPP_CXX03_LANG) 5395 inline _LIBCPP_INLINE_VISIBILITY 5396 pointer_safety get_pointer_safety() _NOEXCEPT { 5397 return pointer_safety::relaxed; 5398 } 5399 # endif 5400 #endif 5401 5402 5403 _LIBCPP_FUNC_VIS void declare_reachable(void* __p); 5404 _LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n); 5405 _LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n); 5406 _LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p); 5407 5408 template <class _Tp> 5409 inline _LIBCPP_INLINE_VISIBILITY 5410 _Tp* 5411 undeclare_reachable(_Tp* __p) 5412 { 5413 return static_cast<_Tp*>(__undeclare_reachable(__p)); 5414 } 5415 5416 _LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); 5417 5418 // --- Helper for container swap -- 5419 template <typename _Alloc> 5420 inline _LIBCPP_INLINE_VISIBILITY 5421 void __swap_allocator(_Alloc & __a1, _Alloc & __a2) 5422 #if _LIBCPP_STD_VER >= 14 5423 _NOEXCEPT 5424 #else 5425 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5426 #endif 5427 { 5428 __swap_allocator(__a1, __a2, 5429 integral_constant<bool, _VSTD::allocator_traits<_Alloc>::propagate_on_container_swap::value>()); 5430 } 5431 5432 template <typename _Alloc> 5433 _LIBCPP_INLINE_VISIBILITY 5434 void __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type) 5435 #if _LIBCPP_STD_VER >= 14 5436 _NOEXCEPT 5437 #else 5438 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5439 #endif 5440 { 5441 using _VSTD::swap; 5442 swap(__a1, __a2); 5443 } 5444 5445 template <typename _Alloc> 5446 inline _LIBCPP_INLINE_VISIBILITY 5447 void __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {} 5448 5449 template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> > 5450 struct __noexcept_move_assign_container : public integral_constant<bool, 5451 _Traits::propagate_on_container_move_assignment::value 5452 #if _LIBCPP_STD_VER > 14 5453 || _Traits::is_always_equal::value 5454 #else 5455 && is_nothrow_move_assignable<_Alloc>::value 5456 #endif 5457 > {}; 5458 5459 5460 #ifndef _LIBCPP_HAS_NO_VARIADICS 5461 template <class _Tp, class _Alloc> 5462 struct __temp_value { 5463 typedef allocator_traits<_Alloc> _Traits; 5464 5465 typename aligned_storage<sizeof(_Tp), alignof(_Tp)>::type __v; 5466 _Alloc &__a; 5467 5468 _Tp *__addr() { return reinterpret_cast<_Tp *>(addressof(__v)); } 5469 _Tp & get() { return *__addr(); } 5470 5471 template<class... _Args> 5472 __temp_value(_Alloc &__alloc, _Args&& ... __args) : __a(__alloc) 5473 { _Traits::construct(__a, __addr(), _VSTD::forward<_Args>(__args)...); } 5474 5475 ~__temp_value() { _Traits::destroy(__a, __addr()); } 5476 }; 5477 #endif 5478 5479 _LIBCPP_END_NAMESPACE_STD 5480 5481 #endif // _LIBCPP_MEMORY 5482
