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 noexcept; 437 template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept; 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 noexcept; 535 template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept; 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 noexcept; 550 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept; 551 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept; 552 }; 553 554 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 noexcept; 560 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept; 561 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept; 562 }; 563 564 template <> // Added in C++14 565 struct owner_less<void> 566 { 567 template <class _Tp, class _Up> 568 bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept; 569 template <class _Tp, class _Up> 570 bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const noexcept; 571 template <class _Tp, class _Up> 572 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept; 573 template <class _Tp, class _Up> 574 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const noexcept; 575 576 typedef void is_transparent; 577 }; 578 579 template<class T> 580 class enable_shared_from_this 581 { 582 protected: 583 constexpr enable_shared_from_this() noexcept; 584 enable_shared_from_this(enable_shared_from_this const&) noexcept; 585 enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept; 586 ~enable_shared_from_this(); 587 public: 588 shared_ptr<T> shared_from_this(); 589 shared_ptr<T const> shared_from_this() const; 590 }; 591 592 template<class T> 593 bool atomic_is_lock_free(const shared_ptr<T>* p); 594 template<class T> 595 shared_ptr<T> atomic_load(const shared_ptr<T>* p); 596 template<class T> 597 shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo); 598 template<class T> 599 void atomic_store(shared_ptr<T>* p, shared_ptr<T> r); 600 template<class T> 601 void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 602 template<class T> 603 shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r); 604 template<class T> 605 shared_ptr<T> 606 atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 607 template<class T> 608 bool 609 atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 610 template<class T> 611 bool 612 atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 613 template<class T> 614 bool 615 atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 616 shared_ptr<T> w, memory_order success, 617 memory_order failure); 618 template<class T> 619 bool 620 atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 621 shared_ptr<T> w, memory_order success, 622 memory_order failure); 623 // Hash support 624 template <class T> struct hash; 625 template <class T, class D> struct hash<unique_ptr<T, D> >; 626 template <class T> struct hash<shared_ptr<T> >; 627 628 // Pointer safety 629 enum class pointer_safety { relaxed, preferred, strict }; 630 void declare_reachable(void *p); 631 template <class T> T *undeclare_reachable(T *p); 632 void declare_no_pointers(char *p, size_t n); 633 void undeclare_no_pointers(char *p, size_t n); 634 pointer_safety get_pointer_safety() noexcept; 635 636 void* align(size_t alignment, size_t size, void*& ptr, size_t& space); 637 638 } // std 639 640 */ 641 642 #include <__config> 643 #include <type_traits> 644 #include <typeinfo> 645 #include <cstddef> 646 #include <cstdint> 647 #include <new> 648 #include <utility> 649 #include <limits> 650 #include <iterator> 651 #include <__functional_base> 652 #include <iosfwd> 653 #include <tuple> 654 #include <stdexcept> 655 #include <cstring> 656 #include <cassert> 657 #if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 658 # include <atomic> 659 #endif 660 661 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 662 #pragma GCC system_header 663 #endif 664 665 _LIBCPP_PUSH_MACROS 666 #include <__undef_macros> 667 668 669 _LIBCPP_BEGIN_NAMESPACE_STD 670 671 template <class _ValueType> 672 inline _LIBCPP_ALWAYS_INLINE 673 _ValueType __libcpp_relaxed_load(_ValueType const* __value) { 674 #if !defined(_LIBCPP_HAS_NO_THREADS) && \ 675 defined(__ATOMIC_RELAXED) && \ 676 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407) 677 return __atomic_load_n(__value, __ATOMIC_RELAXED); 678 #else 679 return *__value; 680 #endif 681 } 682 683 template <class _ValueType> 684 inline _LIBCPP_ALWAYS_INLINE 685 _ValueType __libcpp_acquire_load(_ValueType const* __value) { 686 #if !defined(_LIBCPP_HAS_NO_THREADS) && \ 687 defined(__ATOMIC_ACQUIRE) && \ 688 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407) 689 return __atomic_load_n(__value, __ATOMIC_ACQUIRE); 690 #else 691 return *__value; 692 #endif 693 } 694 695 // addressof moved to <type_traits> 696 697 template <class _Tp> class allocator; 698 699 template <> 700 class _LIBCPP_TEMPLATE_VIS allocator<void> 701 { 702 public: 703 typedef void* pointer; 704 typedef const void* const_pointer; 705 typedef void value_type; 706 707 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 708 }; 709 710 template <> 711 class _LIBCPP_TEMPLATE_VIS allocator<const void> 712 { 713 public: 714 typedef const void* pointer; 715 typedef const void* const_pointer; 716 typedef const void value_type; 717 718 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 719 }; 720 721 // pointer_traits 722 723 template <class _Tp, class = void> 724 struct __has_element_type : false_type {}; 725 726 template <class _Tp> 727 struct __has_element_type<_Tp, 728 typename __void_t<typename _Tp::element_type>::type> : true_type {}; 729 730 template <class _Ptr, bool = __has_element_type<_Ptr>::value> 731 struct __pointer_traits_element_type; 732 733 template <class _Ptr> 734 struct __pointer_traits_element_type<_Ptr, true> 735 { 736 typedef typename _Ptr::element_type type; 737 }; 738 739 #ifndef _LIBCPP_HAS_NO_VARIADICS 740 741 template <template <class, class...> class _Sp, class _Tp, class ..._Args> 742 struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true> 743 { 744 typedef typename _Sp<_Tp, _Args...>::element_type type; 745 }; 746 747 template <template <class, class...> class _Sp, class _Tp, class ..._Args> 748 struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false> 749 { 750 typedef _Tp type; 751 }; 752 753 #else // _LIBCPP_HAS_NO_VARIADICS 754 755 template <template <class> class _Sp, class _Tp> 756 struct __pointer_traits_element_type<_Sp<_Tp>, true> 757 { 758 typedef typename _Sp<_Tp>::element_type type; 759 }; 760 761 template <template <class> class _Sp, class _Tp> 762 struct __pointer_traits_element_type<_Sp<_Tp>, false> 763 { 764 typedef _Tp type; 765 }; 766 767 template <template <class, class> class _Sp, class _Tp, class _A0> 768 struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true> 769 { 770 typedef typename _Sp<_Tp, _A0>::element_type type; 771 }; 772 773 template <template <class, class> class _Sp, class _Tp, class _A0> 774 struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false> 775 { 776 typedef _Tp type; 777 }; 778 779 template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 780 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true> 781 { 782 typedef typename _Sp<_Tp, _A0, _A1>::element_type type; 783 }; 784 785 template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 786 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false> 787 { 788 typedef _Tp type; 789 }; 790 791 template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 792 class _A1, class _A2> 793 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true> 794 { 795 typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type; 796 }; 797 798 template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 799 class _A1, class _A2> 800 struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false> 801 { 802 typedef _Tp type; 803 }; 804 805 #endif // _LIBCPP_HAS_NO_VARIADICS 806 807 template <class _Tp, class = void> 808 struct __has_difference_type : false_type {}; 809 810 template <class _Tp> 811 struct __has_difference_type<_Tp, 812 typename __void_t<typename _Tp::difference_type>::type> : true_type {}; 813 814 template <class _Ptr, bool = __has_difference_type<_Ptr>::value> 815 struct __pointer_traits_difference_type 816 { 817 typedef ptrdiff_t type; 818 }; 819 820 template <class _Ptr> 821 struct __pointer_traits_difference_type<_Ptr, true> 822 { 823 typedef typename _Ptr::difference_type type; 824 }; 825 826 template <class _Tp, class _Up> 827 struct __has_rebind 828 { 829 private: 830 struct __two {char __lx; char __lxx;}; 831 template <class _Xp> static __two __test(...); 832 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0); 833 public: 834 static const bool value = sizeof(__test<_Tp>(0)) == 1; 835 }; 836 837 template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 838 struct __pointer_traits_rebind 839 { 840 #ifndef _LIBCPP_CXX03_LANG 841 typedef typename _Tp::template rebind<_Up> type; 842 #else 843 typedef typename _Tp::template rebind<_Up>::other type; 844 #endif 845 }; 846 847 #ifndef _LIBCPP_HAS_NO_VARIADICS 848 849 template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 850 struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true> 851 { 852 #ifndef _LIBCPP_CXX03_LANG 853 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type; 854 #else 855 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type; 856 #endif 857 }; 858 859 template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 860 struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false> 861 { 862 typedef _Sp<_Up, _Args...> type; 863 }; 864 865 #else // _LIBCPP_HAS_NO_VARIADICS 866 867 template <template <class> class _Sp, class _Tp, class _Up> 868 struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true> 869 { 870 #ifndef _LIBCPP_CXX03_LANG 871 typedef typename _Sp<_Tp>::template rebind<_Up> type; 872 #else 873 typedef typename _Sp<_Tp>::template rebind<_Up>::other type; 874 #endif 875 }; 876 877 template <template <class> class _Sp, class _Tp, class _Up> 878 struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false> 879 { 880 typedef _Sp<_Up> type; 881 }; 882 883 template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 884 struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true> 885 { 886 #ifndef _LIBCPP_CXX03_LANG 887 typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type; 888 #else 889 typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type; 890 #endif 891 }; 892 893 template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 894 struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false> 895 { 896 typedef _Sp<_Up, _A0> type; 897 }; 898 899 template <template <class, class, class> class _Sp, class _Tp, class _A0, 900 class _A1, class _Up> 901 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true> 902 { 903 #ifndef _LIBCPP_CXX03_LANG 904 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type; 905 #else 906 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type; 907 #endif 908 }; 909 910 template <template <class, class, class> class _Sp, class _Tp, class _A0, 911 class _A1, class _Up> 912 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false> 913 { 914 typedef _Sp<_Up, _A0, _A1> type; 915 }; 916 917 template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 918 class _A1, class _A2, class _Up> 919 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true> 920 { 921 #ifndef _LIBCPP_CXX03_LANG 922 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type; 923 #else 924 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 925 #endif 926 }; 927 928 template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 929 class _A1, class _A2, class _Up> 930 struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false> 931 { 932 typedef _Sp<_Up, _A0, _A1, _A2> type; 933 }; 934 935 #endif // _LIBCPP_HAS_NO_VARIADICS 936 937 template <class _Ptr> 938 struct _LIBCPP_TEMPLATE_VIS pointer_traits 939 { 940 typedef _Ptr pointer; 941 typedef typename __pointer_traits_element_type<pointer>::type element_type; 942 typedef typename __pointer_traits_difference_type<pointer>::type difference_type; 943 944 #ifndef _LIBCPP_CXX03_LANG 945 template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type; 946 #else 947 template <class _Up> struct rebind 948 {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;}; 949 #endif // _LIBCPP_CXX03_LANG 950 951 private: 952 struct __nat {}; 953 public: 954 _LIBCPP_INLINE_VISIBILITY 955 static pointer pointer_to(typename conditional<is_void<element_type>::value, 956 __nat, element_type>::type& __r) 957 {return pointer::pointer_to(__r);} 958 }; 959 960 template <class _Tp> 961 struct _LIBCPP_TEMPLATE_VIS pointer_traits<_Tp*> 962 { 963 typedef _Tp* pointer; 964 typedef _Tp element_type; 965 typedef ptrdiff_t difference_type; 966 967 #ifndef _LIBCPP_CXX03_LANG 968 template <class _Up> using rebind = _Up*; 969 #else 970 template <class _Up> struct rebind {typedef _Up* other;}; 971 #endif 972 973 private: 974 struct __nat {}; 975 public: 976 _LIBCPP_INLINE_VISIBILITY 977 static pointer pointer_to(typename conditional<is_void<element_type>::value, 978 __nat, element_type>::type& __r) _NOEXCEPT 979 {return _VSTD::addressof(__r);} 980 }; 981 982 template <class _From, class _To> 983 struct __rebind_pointer { 984 #ifndef _LIBCPP_CXX03_LANG 985 typedef typename pointer_traits<_From>::template rebind<_To> type; 986 #else 987 typedef typename pointer_traits<_From>::template rebind<_To>::other type; 988 #endif 989 }; 990 991 // allocator_traits 992 993 template <class _Tp, class = void> 994 struct __has_pointer_type : false_type {}; 995 996 template <class _Tp> 997 struct __has_pointer_type<_Tp, 998 typename __void_t<typename _Tp::pointer>::type> : true_type {}; 999 1000 namespace __pointer_type_imp 1001 { 1002 1003 template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value> 1004 struct __pointer_type 1005 { 1006 typedef typename _Dp::pointer type; 1007 }; 1008 1009 template <class _Tp, class _Dp> 1010 struct __pointer_type<_Tp, _Dp, false> 1011 { 1012 typedef _Tp* type; 1013 }; 1014 1015 } // __pointer_type_imp 1016 1017 template <class _Tp, class _Dp> 1018 struct __pointer_type 1019 { 1020 typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type; 1021 }; 1022 1023 template <class _Tp, class = void> 1024 struct __has_const_pointer : false_type {}; 1025 1026 template <class _Tp> 1027 struct __has_const_pointer<_Tp, 1028 typename __void_t<typename _Tp::const_pointer>::type> : true_type {}; 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, class = void> 1047 struct __has_void_pointer : false_type {}; 1048 1049 template <class _Tp> 1050 struct __has_void_pointer<_Tp, 1051 typename __void_t<typename _Tp::void_pointer>::type> : true_type {}; 1052 1053 template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value> 1054 struct __void_pointer 1055 { 1056 typedef typename _Alloc::void_pointer type; 1057 }; 1058 1059 template <class _Ptr, class _Alloc> 1060 struct __void_pointer<_Ptr, _Alloc, false> 1061 { 1062 #ifndef _LIBCPP_CXX03_LANG 1063 typedef typename pointer_traits<_Ptr>::template rebind<void> type; 1064 #else 1065 typedef typename pointer_traits<_Ptr>::template rebind<void>::other type; 1066 #endif 1067 }; 1068 1069 template <class _Tp, class = void> 1070 struct __has_const_void_pointer : false_type {}; 1071 1072 template <class _Tp> 1073 struct __has_const_void_pointer<_Tp, 1074 typename __void_t<typename _Tp::const_void_pointer>::type> : true_type {}; 1075 1076 template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value> 1077 struct __const_void_pointer 1078 { 1079 typedef typename _Alloc::const_void_pointer type; 1080 }; 1081 1082 template <class _Ptr, class _Alloc> 1083 struct __const_void_pointer<_Ptr, _Alloc, false> 1084 { 1085 #ifndef _LIBCPP_CXX03_LANG 1086 typedef typename pointer_traits<_Ptr>::template rebind<const void> type; 1087 #else 1088 typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type; 1089 #endif 1090 }; 1091 1092 template <class _Tp> 1093 inline _LIBCPP_INLINE_VISIBILITY 1094 _Tp* 1095 __to_raw_pointer(_Tp* __p) _NOEXCEPT 1096 { 1097 return __p; 1098 } 1099 1100 template <class _Pointer> 1101 inline _LIBCPP_INLINE_VISIBILITY 1102 typename pointer_traits<_Pointer>::element_type* 1103 __to_raw_pointer(_Pointer __p) _NOEXCEPT 1104 { 1105 return _VSTD::__to_raw_pointer(__p.operator->()); 1106 } 1107 1108 template <class _Tp, class = void> 1109 struct __has_size_type : false_type {}; 1110 1111 template <class _Tp> 1112 struct __has_size_type<_Tp, 1113 typename __void_t<typename _Tp::size_type>::type> : true_type {}; 1114 1115 template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value> 1116 struct __size_type 1117 { 1118 typedef typename make_unsigned<_DiffType>::type type; 1119 }; 1120 1121 template <class _Alloc, class _DiffType> 1122 struct __size_type<_Alloc, _DiffType, true> 1123 { 1124 typedef typename _Alloc::size_type type; 1125 }; 1126 1127 template <class _Tp, class = void> 1128 struct __has_propagate_on_container_copy_assignment : false_type {}; 1129 1130 template <class _Tp> 1131 struct __has_propagate_on_container_copy_assignment<_Tp, 1132 typename __void_t<typename _Tp::propagate_on_container_copy_assignment>::type> 1133 : true_type {}; 1134 1135 template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value> 1136 struct __propagate_on_container_copy_assignment 1137 { 1138 typedef false_type type; 1139 }; 1140 1141 template <class _Alloc> 1142 struct __propagate_on_container_copy_assignment<_Alloc, true> 1143 { 1144 typedef typename _Alloc::propagate_on_container_copy_assignment type; 1145 }; 1146 1147 template <class _Tp, class = void> 1148 struct __has_propagate_on_container_move_assignment : false_type {}; 1149 1150 template <class _Tp> 1151 struct __has_propagate_on_container_move_assignment<_Tp, 1152 typename __void_t<typename _Tp::propagate_on_container_move_assignment>::type> 1153 : true_type {}; 1154 1155 template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value> 1156 struct __propagate_on_container_move_assignment 1157 { 1158 typedef false_type type; 1159 }; 1160 1161 template <class _Alloc> 1162 struct __propagate_on_container_move_assignment<_Alloc, true> 1163 { 1164 typedef typename _Alloc::propagate_on_container_move_assignment type; 1165 }; 1166 1167 template <class _Tp, class = void> 1168 struct __has_propagate_on_container_swap : false_type {}; 1169 1170 template <class _Tp> 1171 struct __has_propagate_on_container_swap<_Tp, 1172 typename __void_t<typename _Tp::propagate_on_container_swap>::type> 1173 : true_type {}; 1174 1175 template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value> 1176 struct __propagate_on_container_swap 1177 { 1178 typedef false_type type; 1179 }; 1180 1181 template <class _Alloc> 1182 struct __propagate_on_container_swap<_Alloc, true> 1183 { 1184 typedef typename _Alloc::propagate_on_container_swap type; 1185 }; 1186 1187 template <class _Tp, class = void> 1188 struct __has_is_always_equal : false_type {}; 1189 1190 template <class _Tp> 1191 struct __has_is_always_equal<_Tp, 1192 typename __void_t<typename _Tp::is_always_equal>::type> 1193 : true_type {}; 1194 1195 template <class _Alloc, bool = __has_is_always_equal<_Alloc>::value> 1196 struct __is_always_equal 1197 { 1198 typedef typename _VSTD::is_empty<_Alloc>::type type; 1199 }; 1200 1201 template <class _Alloc> 1202 struct __is_always_equal<_Alloc, true> 1203 { 1204 typedef typename _Alloc::is_always_equal type; 1205 }; 1206 1207 template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 1208 struct __has_rebind_other 1209 { 1210 private: 1211 struct __two {char __lx; char __lxx;}; 1212 template <class _Xp> static __two __test(...); 1213 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0); 1214 public: 1215 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1216 }; 1217 1218 template <class _Tp, class _Up> 1219 struct __has_rebind_other<_Tp, _Up, false> 1220 { 1221 static const bool value = false; 1222 }; 1223 1224 template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value> 1225 struct __allocator_traits_rebind 1226 { 1227 typedef typename _Tp::template rebind<_Up>::other type; 1228 }; 1229 1230 #ifndef _LIBCPP_HAS_NO_VARIADICS 1231 1232 template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1233 struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true> 1234 { 1235 typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type; 1236 }; 1237 1238 template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1239 struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false> 1240 { 1241 typedef _Alloc<_Up, _Args...> type; 1242 }; 1243 1244 #else // _LIBCPP_HAS_NO_VARIADICS 1245 1246 template <template <class> class _Alloc, class _Tp, class _Up> 1247 struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true> 1248 { 1249 typedef typename _Alloc<_Tp>::template rebind<_Up>::other type; 1250 }; 1251 1252 template <template <class> class _Alloc, class _Tp, class _Up> 1253 struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false> 1254 { 1255 typedef _Alloc<_Up> type; 1256 }; 1257 1258 template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1259 struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true> 1260 { 1261 typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type; 1262 }; 1263 1264 template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1265 struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false> 1266 { 1267 typedef _Alloc<_Up, _A0> type; 1268 }; 1269 1270 template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1271 class _A1, class _Up> 1272 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true> 1273 { 1274 typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type; 1275 }; 1276 1277 template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1278 class _A1, class _Up> 1279 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false> 1280 { 1281 typedef _Alloc<_Up, _A0, _A1> type; 1282 }; 1283 1284 template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1285 class _A1, class _A2, class _Up> 1286 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true> 1287 { 1288 typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 1289 }; 1290 1291 template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1292 class _A1, class _A2, class _Up> 1293 struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false> 1294 { 1295 typedef _Alloc<_Up, _A0, _A1, _A2> type; 1296 }; 1297 1298 #endif // _LIBCPP_HAS_NO_VARIADICS 1299 1300 #ifndef _LIBCPP_CXX03_LANG 1301 1302 template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1303 auto 1304 __has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1305 -> decltype(__a.allocate(__sz, __p), true_type()); 1306 1307 template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1308 auto 1309 __has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1310 -> false_type; 1311 1312 template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1313 struct __has_allocate_hint 1314 : integral_constant<bool, 1315 is_same< 1316 decltype(__has_allocate_hint_test(declval<_Alloc>(), 1317 declval<_SizeType>(), 1318 declval<_ConstVoidPtr>())), 1319 true_type>::value> 1320 { 1321 }; 1322 1323 #else // _LIBCPP_CXX03_LANG 1324 1325 template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1326 struct __has_allocate_hint 1327 : true_type 1328 { 1329 }; 1330 1331 #endif // _LIBCPP_CXX03_LANG 1332 1333 #if !defined(_LIBCPP_CXX03_LANG) 1334 1335 template <class _Alloc, class _Tp, class ..._Args> 1336 decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(), 1337 _VSTD::declval<_Args>()...), 1338 true_type()) 1339 __has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args); 1340 1341 template <class _Alloc, class _Pointer, class ..._Args> 1342 false_type 1343 __has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args); 1344 1345 template <class _Alloc, class _Pointer, class ..._Args> 1346 struct __has_construct 1347 : integral_constant<bool, 1348 is_same< 1349 decltype(__has_construct_test(declval<_Alloc>(), 1350 declval<_Pointer>(), 1351 declval<_Args>()...)), 1352 true_type>::value> 1353 { 1354 }; 1355 1356 template <class _Alloc, class _Pointer> 1357 auto 1358 __has_destroy_test(_Alloc&& __a, _Pointer&& __p) 1359 -> decltype(__a.destroy(__p), true_type()); 1360 1361 template <class _Alloc, class _Pointer> 1362 auto 1363 __has_destroy_test(const _Alloc& __a, _Pointer&& __p) 1364 -> false_type; 1365 1366 template <class _Alloc, class _Pointer> 1367 struct __has_destroy 1368 : integral_constant<bool, 1369 is_same< 1370 decltype(__has_destroy_test(declval<_Alloc>(), 1371 declval<_Pointer>())), 1372 true_type>::value> 1373 { 1374 }; 1375 1376 template <class _Alloc> 1377 auto 1378 __has_max_size_test(_Alloc&& __a) 1379 -> decltype(__a.max_size(), true_type()); 1380 1381 template <class _Alloc> 1382 auto 1383 __has_max_size_test(const volatile _Alloc& __a) 1384 -> false_type; 1385 1386 template <class _Alloc> 1387 struct __has_max_size 1388 : integral_constant<bool, 1389 is_same< 1390 decltype(__has_max_size_test(declval<_Alloc&>())), 1391 true_type>::value> 1392 { 1393 }; 1394 1395 template <class _Alloc> 1396 auto 1397 __has_select_on_container_copy_construction_test(_Alloc&& __a) 1398 -> decltype(__a.select_on_container_copy_construction(), true_type()); 1399 1400 template <class _Alloc> 1401 auto 1402 __has_select_on_container_copy_construction_test(const volatile _Alloc& __a) 1403 -> false_type; 1404 1405 template <class _Alloc> 1406 struct __has_select_on_container_copy_construction 1407 : integral_constant<bool, 1408 is_same< 1409 decltype(__has_select_on_container_copy_construction_test(declval<_Alloc&>())), 1410 true_type>::value> 1411 { 1412 }; 1413 1414 #else // _LIBCPP_CXX03_LANG 1415 1416 #ifndef _LIBCPP_HAS_NO_VARIADICS 1417 1418 template <class _Alloc, class _Pointer, class ..._Args> 1419 struct __has_construct 1420 : false_type 1421 { 1422 }; 1423 1424 #else // _LIBCPP_HAS_NO_VARIADICS 1425 1426 template <class _Alloc, class _Pointer, class _Args> 1427 struct __has_construct 1428 : false_type 1429 { 1430 }; 1431 1432 #endif // _LIBCPP_HAS_NO_VARIADICS 1433 1434 template <class _Alloc, class _Pointer> 1435 struct __has_destroy 1436 : false_type 1437 { 1438 }; 1439 1440 template <class _Alloc> 1441 struct __has_max_size 1442 : true_type 1443 { 1444 }; 1445 1446 template <class _Alloc> 1447 struct __has_select_on_container_copy_construction 1448 : false_type 1449 { 1450 }; 1451 1452 #endif // _LIBCPP_CXX03_LANG 1453 1454 template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value> 1455 struct __alloc_traits_difference_type 1456 { 1457 typedef typename pointer_traits<_Ptr>::difference_type type; 1458 }; 1459 1460 template <class _Alloc, class _Ptr> 1461 struct __alloc_traits_difference_type<_Alloc, _Ptr, true> 1462 { 1463 typedef typename _Alloc::difference_type type; 1464 }; 1465 1466 template <class _Alloc> 1467 struct _LIBCPP_TEMPLATE_VIS allocator_traits 1468 { 1469 typedef _Alloc allocator_type; 1470 typedef typename allocator_type::value_type value_type; 1471 1472 typedef typename __pointer_type<value_type, allocator_type>::type pointer; 1473 typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer; 1474 typedef typename __void_pointer<pointer, allocator_type>::type void_pointer; 1475 typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer; 1476 1477 typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type; 1478 typedef typename __size_type<allocator_type, difference_type>::type size_type; 1479 1480 typedef typename __propagate_on_container_copy_assignment<allocator_type>::type 1481 propagate_on_container_copy_assignment; 1482 typedef typename __propagate_on_container_move_assignment<allocator_type>::type 1483 propagate_on_container_move_assignment; 1484 typedef typename __propagate_on_container_swap<allocator_type>::type 1485 propagate_on_container_swap; 1486 typedef typename __is_always_equal<allocator_type>::type 1487 is_always_equal; 1488 1489 #ifndef _LIBCPP_CXX03_LANG 1490 template <class _Tp> using rebind_alloc = 1491 typename __allocator_traits_rebind<allocator_type, _Tp>::type; 1492 template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>; 1493 #else // _LIBCPP_CXX03_LANG 1494 template <class _Tp> struct rebind_alloc 1495 {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;}; 1496 template <class _Tp> struct rebind_traits 1497 {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;}; 1498 #endif // _LIBCPP_CXX03_LANG 1499 1500 _LIBCPP_INLINE_VISIBILITY 1501 static pointer allocate(allocator_type& __a, size_type __n) 1502 {return __a.allocate(__n);} 1503 _LIBCPP_INLINE_VISIBILITY 1504 static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint) 1505 {return __allocate(__a, __n, __hint, 1506 __has_allocate_hint<allocator_type, size_type, const_void_pointer>());} 1507 1508 _LIBCPP_INLINE_VISIBILITY 1509 static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT 1510 {__a.deallocate(__p, __n);} 1511 1512 #ifndef _LIBCPP_HAS_NO_VARIADICS 1513 template <class _Tp, class... _Args> 1514 _LIBCPP_INLINE_VISIBILITY 1515 static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args) 1516 {__construct(__has_construct<allocator_type, _Tp*, _Args...>(), 1517 __a, __p, _VSTD::forward<_Args>(__args)...);} 1518 #else // _LIBCPP_HAS_NO_VARIADICS 1519 template <class _Tp> 1520 _LIBCPP_INLINE_VISIBILITY 1521 static void construct(allocator_type&, _Tp* __p) 1522 { 1523 ::new ((void*)__p) _Tp(); 1524 } 1525 template <class _Tp, class _A0> 1526 _LIBCPP_INLINE_VISIBILITY 1527 static void construct(allocator_type&, _Tp* __p, const _A0& __a0) 1528 { 1529 ::new ((void*)__p) _Tp(__a0); 1530 } 1531 template <class _Tp, class _A0, class _A1> 1532 _LIBCPP_INLINE_VISIBILITY 1533 static void construct(allocator_type&, _Tp* __p, const _A0& __a0, 1534 const _A1& __a1) 1535 { 1536 ::new ((void*)__p) _Tp(__a0, __a1); 1537 } 1538 template <class _Tp, class _A0, class _A1, class _A2> 1539 _LIBCPP_INLINE_VISIBILITY 1540 static void construct(allocator_type&, _Tp* __p, const _A0& __a0, 1541 const _A1& __a1, const _A2& __a2) 1542 { 1543 ::new ((void*)__p) _Tp(__a0, __a1, __a2); 1544 } 1545 #endif // _LIBCPP_HAS_NO_VARIADICS 1546 1547 template <class _Tp> 1548 _LIBCPP_INLINE_VISIBILITY 1549 static void destroy(allocator_type& __a, _Tp* __p) 1550 {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);} 1551 1552 _LIBCPP_INLINE_VISIBILITY 1553 static size_type max_size(const allocator_type& __a) _NOEXCEPT 1554 {return __max_size(__has_max_size<const allocator_type>(), __a);} 1555 1556 _LIBCPP_INLINE_VISIBILITY 1557 static allocator_type 1558 select_on_container_copy_construction(const allocator_type& __a) 1559 {return __select_on_container_copy_construction( 1560 __has_select_on_container_copy_construction<const allocator_type>(), 1561 __a);} 1562 1563 template <class _Ptr> 1564 _LIBCPP_INLINE_VISIBILITY 1565 static 1566 void 1567 __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) 1568 { 1569 for (; __begin1 != __end1; ++__begin1, ++__begin2) 1570 construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1)); 1571 } 1572 1573 template <class _Tp> 1574 _LIBCPP_INLINE_VISIBILITY 1575 static 1576 typename enable_if 1577 < 1578 (is_same<allocator_type, allocator<_Tp> >::value 1579 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1580 is_trivially_move_constructible<_Tp>::value, 1581 void 1582 >::type 1583 __construct_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1584 { 1585 ptrdiff_t _Np = __end1 - __begin1; 1586 if (_Np > 0) 1587 { 1588 _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp)); 1589 __begin2 += _Np; 1590 } 1591 } 1592 1593 template <class _Iter, class _Ptr> 1594 _LIBCPP_INLINE_VISIBILITY 1595 static 1596 void 1597 __construct_range_forward(allocator_type& __a, _Iter __begin1, _Iter __end1, _Ptr& __begin2) 1598 { 1599 for (; __begin1 != __end1; ++__begin1, (void) ++__begin2) 1600 construct(__a, _VSTD::__to_raw_pointer(__begin2), *__begin1); 1601 } 1602 1603 template <class _Tp> 1604 _LIBCPP_INLINE_VISIBILITY 1605 static 1606 typename enable_if 1607 < 1608 (is_same<allocator_type, allocator<_Tp> >::value 1609 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1610 is_trivially_move_constructible<_Tp>::value, 1611 void 1612 >::type 1613 __construct_range_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1614 { 1615 typedef typename remove_const<_Tp>::type _Vp; 1616 ptrdiff_t _Np = __end1 - __begin1; 1617 if (_Np > 0) 1618 { 1619 _VSTD::memcpy(const_cast<_Vp*>(__begin2), __begin1, _Np * sizeof(_Tp)); 1620 __begin2 += _Np; 1621 } 1622 } 1623 1624 template <class _Ptr> 1625 _LIBCPP_INLINE_VISIBILITY 1626 static 1627 void 1628 __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2) 1629 { 1630 while (__end1 != __begin1) 1631 { 1632 construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1)); 1633 --__end2; 1634 } 1635 } 1636 1637 template <class _Tp> 1638 _LIBCPP_INLINE_VISIBILITY 1639 static 1640 typename enable_if 1641 < 1642 (is_same<allocator_type, allocator<_Tp> >::value 1643 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1644 is_trivially_move_constructible<_Tp>::value, 1645 void 1646 >::type 1647 __construct_backward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __end2) 1648 { 1649 ptrdiff_t _Np = __end1 - __begin1; 1650 __end2 -= _Np; 1651 if (_Np > 0) 1652 _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp)); 1653 } 1654 1655 private: 1656 1657 _LIBCPP_INLINE_VISIBILITY 1658 static pointer __allocate(allocator_type& __a, size_type __n, 1659 const_void_pointer __hint, true_type) 1660 {return __a.allocate(__n, __hint);} 1661 _LIBCPP_INLINE_VISIBILITY 1662 static pointer __allocate(allocator_type& __a, size_type __n, 1663 const_void_pointer, false_type) 1664 {return __a.allocate(__n);} 1665 1666 #ifndef _LIBCPP_HAS_NO_VARIADICS 1667 template <class _Tp, class... _Args> 1668 _LIBCPP_INLINE_VISIBILITY 1669 static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args) 1670 {__a.construct(__p, _VSTD::forward<_Args>(__args)...);} 1671 template <class _Tp, class... _Args> 1672 _LIBCPP_INLINE_VISIBILITY 1673 static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args) 1674 { 1675 ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...); 1676 } 1677 #endif // _LIBCPP_HAS_NO_VARIADICS 1678 1679 template <class _Tp> 1680 _LIBCPP_INLINE_VISIBILITY 1681 static void __destroy(true_type, allocator_type& __a, _Tp* __p) 1682 {__a.destroy(__p);} 1683 template <class _Tp> 1684 _LIBCPP_INLINE_VISIBILITY 1685 static void __destroy(false_type, allocator_type&, _Tp* __p) 1686 { 1687 __p->~_Tp(); 1688 } 1689 1690 _LIBCPP_INLINE_VISIBILITY 1691 static size_type __max_size(true_type, const allocator_type& __a) 1692 {return __a.max_size();} 1693 _LIBCPP_INLINE_VISIBILITY 1694 static size_type __max_size(false_type, const allocator_type&) 1695 {return numeric_limits<size_type>::max() / sizeof(value_type);} 1696 1697 _LIBCPP_INLINE_VISIBILITY 1698 static allocator_type 1699 __select_on_container_copy_construction(true_type, const allocator_type& __a) 1700 {return __a.select_on_container_copy_construction();} 1701 _LIBCPP_INLINE_VISIBILITY 1702 static allocator_type 1703 __select_on_container_copy_construction(false_type, const allocator_type& __a) 1704 {return __a;} 1705 }; 1706 1707 template <class _Traits, class _Tp> 1708 struct __rebind_alloc_helper 1709 { 1710 #ifndef _LIBCPP_CXX03_LANG 1711 typedef typename _Traits::template rebind_alloc<_Tp> type; 1712 #else 1713 typedef typename _Traits::template rebind_alloc<_Tp>::other type; 1714 #endif 1715 }; 1716 1717 // allocator 1718 1719 template <class _Tp> 1720 class _LIBCPP_TEMPLATE_VIS allocator 1721 { 1722 public: 1723 typedef size_t size_type; 1724 typedef ptrdiff_t difference_type; 1725 typedef _Tp* pointer; 1726 typedef const _Tp* const_pointer; 1727 typedef _Tp& reference; 1728 typedef const _Tp& const_reference; 1729 typedef _Tp value_type; 1730 1731 typedef true_type propagate_on_container_move_assignment; 1732 typedef true_type is_always_equal; 1733 1734 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1735 1736 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1737 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1738 _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT 1739 {return _VSTD::addressof(__x);} 1740 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1741 {return _VSTD::addressof(__x);} 1742 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1743 { 1744 if (__n > max_size()) 1745 __throw_length_error("allocator<T>::allocate(size_t n)" 1746 " 'n' exceeds maximum supported size"); 1747 return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp))); 1748 } 1749 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1750 {_VSTD::__libcpp_deallocate((void*)__p);} 1751 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1752 {return size_type(~0) / sizeof(_Tp);} 1753 #if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1754 template <class _Up, class... _Args> 1755 _LIBCPP_INLINE_VISIBILITY 1756 void 1757 construct(_Up* __p, _Args&&... __args) 1758 { 1759 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1760 } 1761 #else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1762 _LIBCPP_INLINE_VISIBILITY 1763 void 1764 construct(pointer __p) 1765 { 1766 ::new((void*)__p) _Tp(); 1767 } 1768 # if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1769 1770 template <class _A0> 1771 _LIBCPP_INLINE_VISIBILITY 1772 void 1773 construct(pointer __p, _A0& __a0) 1774 { 1775 ::new((void*)__p) _Tp(__a0); 1776 } 1777 template <class _A0> 1778 _LIBCPP_INLINE_VISIBILITY 1779 void 1780 construct(pointer __p, const _A0& __a0) 1781 { 1782 ::new((void*)__p) _Tp(__a0); 1783 } 1784 # endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1785 template <class _A0, class _A1> 1786 _LIBCPP_INLINE_VISIBILITY 1787 void 1788 construct(pointer __p, _A0& __a0, _A1& __a1) 1789 { 1790 ::new((void*)__p) _Tp(__a0, __a1); 1791 } 1792 template <class _A0, class _A1> 1793 _LIBCPP_INLINE_VISIBILITY 1794 void 1795 construct(pointer __p, const _A0& __a0, _A1& __a1) 1796 { 1797 ::new((void*)__p) _Tp(__a0, __a1); 1798 } 1799 template <class _A0, class _A1> 1800 _LIBCPP_INLINE_VISIBILITY 1801 void 1802 construct(pointer __p, _A0& __a0, const _A1& __a1) 1803 { 1804 ::new((void*)__p) _Tp(__a0, __a1); 1805 } 1806 template <class _A0, class _A1> 1807 _LIBCPP_INLINE_VISIBILITY 1808 void 1809 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1810 { 1811 ::new((void*)__p) _Tp(__a0, __a1); 1812 } 1813 #endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1814 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1815 }; 1816 1817 template <class _Tp> 1818 class _LIBCPP_TEMPLATE_VIS allocator<const _Tp> 1819 { 1820 public: 1821 typedef size_t size_type; 1822 typedef ptrdiff_t difference_type; 1823 typedef const _Tp* pointer; 1824 typedef const _Tp* const_pointer; 1825 typedef const _Tp& reference; 1826 typedef const _Tp& const_reference; 1827 typedef const _Tp value_type; 1828 1829 typedef true_type propagate_on_container_move_assignment; 1830 typedef true_type is_always_equal; 1831 1832 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1833 1834 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1835 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1836 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1837 {return _VSTD::addressof(__x);} 1838 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1839 { 1840 if (__n > max_size()) 1841 __throw_length_error("allocator<const T>::allocate(size_t n)" 1842 " 'n' exceeds maximum supported size"); 1843 return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp))); 1844 } 1845 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1846 {_VSTD::__libcpp_deallocate((void*) const_cast<_Tp *>(__p));} 1847 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1848 {return size_type(~0) / sizeof(_Tp);} 1849 #if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1850 template <class _Up, class... _Args> 1851 _LIBCPP_INLINE_VISIBILITY 1852 void 1853 construct(_Up* __p, _Args&&... __args) 1854 { 1855 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1856 } 1857 #else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1858 _LIBCPP_INLINE_VISIBILITY 1859 void 1860 construct(pointer __p) 1861 { 1862 ::new((void*) const_cast<_Tp *>(__p)) _Tp(); 1863 } 1864 # if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1865 1866 template <class _A0> 1867 _LIBCPP_INLINE_VISIBILITY 1868 void 1869 construct(pointer __p, _A0& __a0) 1870 { 1871 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0); 1872 } 1873 template <class _A0> 1874 _LIBCPP_INLINE_VISIBILITY 1875 void 1876 construct(pointer __p, const _A0& __a0) 1877 { 1878 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0); 1879 } 1880 # endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1881 template <class _A0, class _A1> 1882 _LIBCPP_INLINE_VISIBILITY 1883 void 1884 construct(pointer __p, _A0& __a0, _A1& __a1) 1885 { 1886 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1); 1887 } 1888 template <class _A0, class _A1> 1889 _LIBCPP_INLINE_VISIBILITY 1890 void 1891 construct(pointer __p, const _A0& __a0, _A1& __a1) 1892 { 1893 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1); 1894 } 1895 template <class _A0, class _A1> 1896 _LIBCPP_INLINE_VISIBILITY 1897 void 1898 construct(pointer __p, _A0& __a0, const _A1& __a1) 1899 { 1900 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1); 1901 } 1902 template <class _A0, class _A1> 1903 _LIBCPP_INLINE_VISIBILITY 1904 void 1905 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1906 { 1907 ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1); 1908 } 1909 #endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1910 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1911 }; 1912 1913 template <class _Tp, class _Up> 1914 inline _LIBCPP_INLINE_VISIBILITY 1915 bool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;} 1916 1917 template <class _Tp, class _Up> 1918 inline _LIBCPP_INLINE_VISIBILITY 1919 bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;} 1920 1921 template <class _OutputIterator, class _Tp> 1922 class _LIBCPP_TEMPLATE_VIS raw_storage_iterator 1923 : public iterator<output_iterator_tag, 1924 _Tp, // purposefully not C++03 1925 ptrdiff_t, // purposefully not C++03 1926 _Tp*, // purposefully not C++03 1927 raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03 1928 { 1929 private: 1930 _OutputIterator __x_; 1931 public: 1932 _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} 1933 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;} 1934 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element) 1935 {::new(&*__x_) _Tp(__element); return *this;} 1936 #if _LIBCPP_STD_VER >= 14 1937 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element) 1938 {::new(&*__x_) _Tp(_VSTD::move(__element)); return *this;} 1939 #endif 1940 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;} 1941 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int) 1942 {raw_storage_iterator __t(*this); ++__x_; return __t;} 1943 #if _LIBCPP_STD_VER >= 14 1944 _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; } 1945 #endif 1946 }; 1947 1948 template <class _Tp> 1949 pair<_Tp*, ptrdiff_t> 1950 get_temporary_buffer(ptrdiff_t __n) _NOEXCEPT 1951 { 1952 pair<_Tp*, ptrdiff_t> __r(0, 0); 1953 const ptrdiff_t __m = (~ptrdiff_t(0) ^ 1954 ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1))) 1955 / sizeof(_Tp); 1956 if (__n > __m) 1957 __n = __m; 1958 while (__n > 0) 1959 { 1960 __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow)); 1961 if (__r.first) 1962 { 1963 __r.second = __n; 1964 break; 1965 } 1966 __n /= 2; 1967 } 1968 return __r; 1969 } 1970 1971 template <class _Tp> 1972 inline _LIBCPP_INLINE_VISIBILITY 1973 void return_temporary_buffer(_Tp* __p) _NOEXCEPT {::operator delete(__p);} 1974 1975 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 1976 template <class _Tp> 1977 struct auto_ptr_ref 1978 { 1979 _Tp* __ptr_; 1980 }; 1981 1982 template<class _Tp> 1983 class _LIBCPP_TEMPLATE_VIS auto_ptr 1984 { 1985 private: 1986 _Tp* __ptr_; 1987 public: 1988 typedef _Tp element_type; 1989 1990 _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {} 1991 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {} 1992 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw() 1993 : __ptr_(__p.release()) {} 1994 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw() 1995 {reset(__p.release()); return *this;} 1996 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw() 1997 {reset(__p.release()); return *this;} 1998 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw() 1999 {reset(__p.__ptr_); return *this;} 2000 _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;} 2001 2002 _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw() 2003 {return *__ptr_;} 2004 _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;} 2005 _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;} 2006 _LIBCPP_INLINE_VISIBILITY _Tp* release() throw() 2007 { 2008 _Tp* __t = __ptr_; 2009 __ptr_ = 0; 2010 return __t; 2011 } 2012 _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw() 2013 { 2014 if (__ptr_ != __p) 2015 delete __ptr_; 2016 __ptr_ = __p; 2017 } 2018 2019 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {} 2020 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw() 2021 {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;} 2022 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw() 2023 {return auto_ptr<_Up>(release());} 2024 }; 2025 2026 template <> 2027 class _LIBCPP_TEMPLATE_VIS auto_ptr<void> 2028 { 2029 public: 2030 typedef void element_type; 2031 }; 2032 #endif 2033 2034 template <class _Tp, int _Idx, 2035 bool _CanBeEmptyBase = 2036 is_empty<_Tp>::value && !__libcpp_is_final<_Tp>::value> 2037 struct __compressed_pair_elem { 2038 typedef _Tp _ParamT; 2039 typedef _Tp& reference; 2040 typedef const _Tp& const_reference; 2041 2042 #ifndef _LIBCPP_CXX03_LANG 2043 constexpr __compressed_pair_elem() : __value_() {} 2044 2045 template <class _Up, class = typename enable_if< 2046 !is_same<__compressed_pair_elem, typename decay<_Up>::type>::value 2047 >::type> 2048 constexpr explicit 2049 __compressed_pair_elem(_Up&& __u) 2050 : __value_(_VSTD::forward<_Up>(__u)){}; 2051 2052 template <class... _Args, size_t... _Indexes> 2053 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 2054 __compressed_pair_elem(piecewise_construct_t, tuple<_Args...> __args, 2055 __tuple_indices<_Indexes...>) 2056 : __value_(_VSTD::forward<_Args>(_VSTD::get<_Indexes>(__args))...) {} 2057 #else 2058 __compressed_pair_elem() : __value_() {} 2059 __compressed_pair_elem(_ParamT __p) : __value_(std::forward<_ParamT>(__p)) {} 2060 #endif 2061 2062 reference __get() _NOEXCEPT { return __value_; } 2063 const_reference __get() const _NOEXCEPT { return __value_; } 2064 2065 private: 2066 _Tp __value_; 2067 }; 2068 2069 template <class _Tp, int _Idx> 2070 struct __compressed_pair_elem<_Tp, _Idx, true> : private _Tp { 2071 typedef _Tp _ParamT; 2072 typedef _Tp& reference; 2073 typedef const _Tp& const_reference; 2074 typedef _Tp __value_type; 2075 2076 #ifndef _LIBCPP_CXX03_LANG 2077 constexpr __compressed_pair_elem() = default; 2078 2079 template <class _Up, class = typename enable_if< 2080 !is_same<__compressed_pair_elem, typename decay<_Up>::type>::value 2081 >::type> 2082 constexpr explicit 2083 __compressed_pair_elem(_Up&& __u) 2084 : __value_type(_VSTD::forward<_Up>(__u)){}; 2085 2086 template <class... _Args, size_t... _Indexes> 2087 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 2088 __compressed_pair_elem(piecewise_construct_t, tuple<_Args...> __args, 2089 __tuple_indices<_Indexes...>) 2090 : __value_type(_VSTD::forward<_Args>(_VSTD::get<_Indexes>(__args))...) {} 2091 #else 2092 __compressed_pair_elem() : __value_type() {} 2093 __compressed_pair_elem(_ParamT __p) 2094 : __value_type(std::forward<_ParamT>(__p)) {} 2095 #endif 2096 2097 reference __get() _NOEXCEPT { return *this; } 2098 const_reference __get() const _NOEXCEPT { return *this; } 2099 }; 2100 2101 // Tag used to construct the second element of the compressed pair. 2102 struct __second_tag {}; 2103 2104 template <class _T1, class _T2> 2105 class __compressed_pair : private __compressed_pair_elem<_T1, 0>, 2106 private __compressed_pair_elem<_T2, 1> { 2107 typedef __compressed_pair_elem<_T1, 0> _Base1; 2108 typedef __compressed_pair_elem<_T2, 1> _Base2; 2109 2110 // NOTE: This static assert should never fire because __compressed_pair 2111 // is *almost never* used in a scenario where it's possible for T1 == T2. 2112 // (The exception is std::function where it is possible that the function 2113 // object and the allocator have the same type). 2114 static_assert((!is_same<_T1, _T2>::value), 2115 "__compressed_pair cannot be instantated when T1 and T2 are the same type; " 2116 "The current implementation is NOT ABI-compatible with the previous " 2117 "implementation for this configuration"); 2118 2119 public: 2120 #ifndef _LIBCPP_CXX03_LANG 2121 template <bool _Dummy = true, 2122 class = typename enable_if< 2123 __dependent_type<is_default_constructible<_T1>, _Dummy>::value && 2124 __dependent_type<is_default_constructible<_T2>, _Dummy>::value 2125 >::type 2126 > 2127 _LIBCPP_INLINE_VISIBILITY 2128 constexpr __compressed_pair() {} 2129 2130 template <class _Tp, typename enable_if<!is_same<typename decay<_Tp>::type, 2131 __compressed_pair>::value, 2132 bool>::type = true> 2133 _LIBCPP_INLINE_VISIBILITY constexpr explicit 2134 __compressed_pair(_Tp&& __t) 2135 : _Base1(std::forward<_Tp>(__t)), _Base2() {} 2136 2137 template <class _Tp> 2138 _LIBCPP_INLINE_VISIBILITY constexpr 2139 __compressed_pair(__second_tag, _Tp&& __t) 2140 : _Base1(), _Base2(std::forward<_Tp>(__t)) {} 2141 2142 template <class _U1, class _U2> 2143 _LIBCPP_INLINE_VISIBILITY constexpr 2144 __compressed_pair(_U1&& __t1, _U2&& __t2) 2145 : _Base1(std::forward<_U1>(__t1)), _Base2(std::forward<_U2>(__t2)) {} 2146 2147 template <class... _Args1, class... _Args2> 2148 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 2149 __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args, 2150 tuple<_Args2...> __second_args) 2151 : _Base1(__pc, _VSTD::move(__first_args), 2152 typename __make_tuple_indices<sizeof...(_Args1)>::type()), 2153 _Base2(__pc, _VSTD::move(__second_args), 2154 typename __make_tuple_indices<sizeof...(_Args2)>::type()) {} 2155 2156 #else 2157 _LIBCPP_INLINE_VISIBILITY 2158 __compressed_pair() {} 2159 2160 _LIBCPP_INLINE_VISIBILITY explicit 2161 __compressed_pair(_T1 __t1) : _Base1(_VSTD::forward<_T1>(__t1)) {} 2162 2163 _LIBCPP_INLINE_VISIBILITY 2164 __compressed_pair(__second_tag, _T2 __t2) 2165 : _Base1(), _Base2(_VSTD::forward<_T2>(__t2)) {} 2166 2167 _LIBCPP_INLINE_VISIBILITY 2168 __compressed_pair(_T1 __t1, _T2 __t2) 2169 : _Base1(_VSTD::forward<_T1>(__t1)), _Base2(_VSTD::forward<_T2>(__t2)) {} 2170 #endif 2171 2172 _LIBCPP_INLINE_VISIBILITY 2173 typename _Base1::reference first() _NOEXCEPT { 2174 return static_cast<_Base1&>(*this).__get(); 2175 } 2176 2177 _LIBCPP_INLINE_VISIBILITY 2178 typename _Base1::const_reference first() const _NOEXCEPT { 2179 return static_cast<_Base1 const&>(*this).__get(); 2180 } 2181 2182 _LIBCPP_INLINE_VISIBILITY 2183 typename _Base2::reference second() _NOEXCEPT { 2184 return static_cast<_Base2&>(*this).__get(); 2185 } 2186 2187 _LIBCPP_INLINE_VISIBILITY 2188 typename _Base2::const_reference second() const _NOEXCEPT { 2189 return static_cast<_Base2 const&>(*this).__get(); 2190 } 2191 2192 _LIBCPP_INLINE_VISIBILITY 2193 void swap(__compressed_pair& __x) 2194 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2195 __is_nothrow_swappable<_T2>::value) 2196 { 2197 using std::swap; 2198 swap(first(), __x.first()); 2199 swap(second(), __x.second()); 2200 } 2201 }; 2202 2203 template <class _T1, class _T2> 2204 inline _LIBCPP_INLINE_VISIBILITY 2205 void swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y) 2206 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2207 __is_nothrow_swappable<_T2>::value) { 2208 __x.swap(__y); 2209 } 2210 2211 // default_delete 2212 2213 template <class _Tp> 2214 struct _LIBCPP_TEMPLATE_VIS default_delete { 2215 static_assert(!is_function<_Tp>::value, 2216 "default_delete cannot be instantiated for function types"); 2217 #ifndef _LIBCPP_CXX03_LANG 2218 _LIBCPP_INLINE_VISIBILITY constexpr default_delete() noexcept = default; 2219 #else 2220 _LIBCPP_INLINE_VISIBILITY default_delete() {} 2221 #endif 2222 template <class _Up> 2223 _LIBCPP_INLINE_VISIBILITY 2224 default_delete(const default_delete<_Up>&, 2225 typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = 2226 0) _NOEXCEPT {} 2227 2228 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __ptr) const _NOEXCEPT { 2229 static_assert(sizeof(_Tp) > 0, 2230 "default_delete can not delete incomplete type"); 2231 static_assert(!is_void<_Tp>::value, 2232 "default_delete can not delete incomplete type"); 2233 delete __ptr; 2234 } 2235 }; 2236 2237 template <class _Tp> 2238 struct _LIBCPP_TEMPLATE_VIS default_delete<_Tp[]> { 2239 private: 2240 template <class _Up> 2241 struct _EnableIfConvertible 2242 : enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value> {}; 2243 2244 public: 2245 #ifndef _LIBCPP_CXX03_LANG 2246 _LIBCPP_INLINE_VISIBILITY constexpr default_delete() noexcept = default; 2247 #else 2248 _LIBCPP_INLINE_VISIBILITY default_delete() {} 2249 #endif 2250 2251 template <class _Up> 2252 _LIBCPP_INLINE_VISIBILITY 2253 default_delete(const default_delete<_Up[]>&, 2254 typename _EnableIfConvertible<_Up>::type* = 0) _NOEXCEPT {} 2255 2256 template <class _Up> 2257 _LIBCPP_INLINE_VISIBILITY 2258 typename _EnableIfConvertible<_Up>::type 2259 operator()(_Up* __ptr) const _NOEXCEPT { 2260 static_assert(sizeof(_Tp) > 0, 2261 "default_delete can not delete incomplete type"); 2262 static_assert(!is_void<_Tp>::value, 2263 "default_delete can not delete void type"); 2264 delete[] __ptr; 2265 } 2266 }; 2267 2268 2269 2270 #ifndef _LIBCPP_CXX03_LANG 2271 template <class _Deleter> 2272 struct __unique_ptr_deleter_sfinae { 2273 static_assert(!is_reference<_Deleter>::value, "incorrect specialization"); 2274 typedef const _Deleter& __lval_ref_type; 2275 typedef _Deleter&& __good_rval_ref_type; 2276 typedef true_type __enable_rval_overload; 2277 }; 2278 2279 template <class _Deleter> 2280 struct __unique_ptr_deleter_sfinae<_Deleter const&> { 2281 typedef const _Deleter& __lval_ref_type; 2282 typedef const _Deleter&& __bad_rval_ref_type; 2283 typedef false_type __enable_rval_overload; 2284 }; 2285 2286 template <class _Deleter> 2287 struct __unique_ptr_deleter_sfinae<_Deleter&> { 2288 typedef _Deleter& __lval_ref_type; 2289 typedef _Deleter&& __bad_rval_ref_type; 2290 typedef false_type __enable_rval_overload; 2291 }; 2292 #endif // !defined(_LIBCPP_CXX03_LANG) 2293 2294 template <class _Tp, class _Dp = default_delete<_Tp> > 2295 class _LIBCPP_TEMPLATE_VIS unique_ptr { 2296 public: 2297 typedef _Tp element_type; 2298 typedef _Dp deleter_type; 2299 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2300 2301 static_assert(!is_rvalue_reference<deleter_type>::value, 2302 "the specified deleter type cannot be an rvalue reference"); 2303 2304 private: 2305 __compressed_pair<pointer, deleter_type> __ptr_; 2306 2307 struct __nat { int __for_bool_; }; 2308 2309 #ifndef _LIBCPP_CXX03_LANG 2310 typedef __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE; 2311 2312 template <bool _Dummy> 2313 using _LValRefType = 2314 typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type; 2315 2316 template <bool _Dummy> 2317 using _GoodRValRefType = 2318 typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type; 2319 2320 template <bool _Dummy> 2321 using _BadRValRefType = 2322 typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type; 2323 2324 template <bool _Dummy, class _Deleter = typename __dependent_type< 2325 __identity<deleter_type>, _Dummy>::type> 2326 using _EnableIfDeleterDefaultConstructible = 2327 typename enable_if<is_default_constructible<_Deleter>::value && 2328 !is_pointer<_Deleter>::value>::type; 2329 2330 template <class _ArgType> 2331 using _EnableIfDeleterConstructible = 2332 typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type; 2333 2334 template <class _UPtr, class _Up> 2335 using _EnableIfMoveConvertible = typename enable_if< 2336 is_convertible<typename _UPtr::pointer, pointer>::value && 2337 !is_array<_Up>::value 2338 >::type; 2339 2340 template <class _UDel> 2341 using _EnableIfDeleterConvertible = typename enable_if< 2342 (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) || 2343 (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value) 2344 >::type; 2345 2346 template <class _UDel> 2347 using _EnableIfDeleterAssignable = typename enable_if< 2348 is_assignable<_Dp&, _UDel&&>::value 2349 >::type; 2350 2351 public: 2352 template <bool _Dummy = true, 2353 class = _EnableIfDeleterDefaultConstructible<_Dummy>> 2354 _LIBCPP_INLINE_VISIBILITY 2355 constexpr unique_ptr() noexcept : __ptr_(pointer()) {} 2356 2357 template <bool _Dummy = true, 2358 class = _EnableIfDeleterDefaultConstructible<_Dummy>> 2359 _LIBCPP_INLINE_VISIBILITY 2360 constexpr unique_ptr(nullptr_t) noexcept : __ptr_(pointer()) {} 2361 2362 template <bool _Dummy = true, 2363 class = _EnableIfDeleterDefaultConstructible<_Dummy>> 2364 _LIBCPP_INLINE_VISIBILITY 2365 explicit unique_ptr(pointer __p) noexcept : __ptr_(__p) {} 2366 2367 template <bool _Dummy = true, 2368 class = _EnableIfDeleterConstructible<_LValRefType<_Dummy>>> 2369 _LIBCPP_INLINE_VISIBILITY 2370 unique_ptr(pointer __p, _LValRefType<_Dummy> __d) noexcept 2371 : __ptr_(__p, __d) {} 2372 2373 template <bool _Dummy = true, 2374 class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy>>> 2375 _LIBCPP_INLINE_VISIBILITY 2376 unique_ptr(pointer __p, _GoodRValRefType<_Dummy> __d) noexcept 2377 : __ptr_(__p, _VSTD::move(__d)) { 2378 static_assert(!is_reference<deleter_type>::value, 2379 "rvalue deleter bound to reference"); 2380 } 2381 2382 template <bool _Dummy = true, 2383 class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy>>> 2384 _LIBCPP_INLINE_VISIBILITY 2385 unique_ptr(pointer __p, _BadRValRefType<_Dummy> __d) = delete; 2386 2387 _LIBCPP_INLINE_VISIBILITY 2388 unique_ptr(unique_ptr&& __u) noexcept 2389 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) { 2390 } 2391 2392 template <class _Up, class _Ep, 2393 class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, 2394 class = _EnableIfDeleterConvertible<_Ep> 2395 > 2396 _LIBCPP_INLINE_VISIBILITY 2397 unique_ptr(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2398 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {} 2399 2400 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 2401 template <class _Up> 2402 _LIBCPP_INLINE_VISIBILITY 2403 unique_ptr(auto_ptr<_Up>&& __p, 2404 typename enable_if<is_convertible<_Up*, _Tp*>::value && 2405 is_same<_Dp, default_delete<_Tp>>::value, 2406 __nat>::type = __nat()) _NOEXCEPT 2407 : __ptr_(__p.release()) {} 2408 #endif 2409 2410 _LIBCPP_INLINE_VISIBILITY 2411 unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT { 2412 reset(__u.release()); 2413 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2414 return *this; 2415 } 2416 2417 template <class _Up, class _Ep, 2418 class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, 2419 class = _EnableIfDeleterAssignable<_Ep> 2420 > 2421 _LIBCPP_INLINE_VISIBILITY 2422 unique_ptr& operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT { 2423 reset(__u.release()); 2424 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2425 return *this; 2426 } 2427 2428 #else // _LIBCPP_CXX03_LANG 2429 private: 2430 unique_ptr(unique_ptr&); 2431 template <class _Up, class _Ep> unique_ptr(unique_ptr<_Up, _Ep>&); 2432 2433 unique_ptr& operator=(unique_ptr&); 2434 template <class _Up, class _Ep> unique_ptr& operator=(unique_ptr<_Up, _Ep>&); 2435 2436 public: 2437 _LIBCPP_INLINE_VISIBILITY 2438 unique_ptr() : __ptr_(pointer()) 2439 { 2440 static_assert(!is_pointer<deleter_type>::value, 2441 "unique_ptr constructed with null function pointer deleter"); 2442 static_assert(is_default_constructible<deleter_type>::value, 2443 "unique_ptr::deleter_type is not default constructible"); 2444 } 2445 _LIBCPP_INLINE_VISIBILITY 2446 unique_ptr(nullptr_t) : __ptr_(pointer()) 2447 { 2448 static_assert(!is_pointer<deleter_type>::value, 2449 "unique_ptr constructed with null function pointer deleter"); 2450 } 2451 _LIBCPP_INLINE_VISIBILITY 2452 explicit unique_ptr(pointer __p) 2453 : __ptr_(_VSTD::move(__p)) { 2454 static_assert(!is_pointer<deleter_type>::value, 2455 "unique_ptr constructed with null function pointer deleter"); 2456 } 2457 2458 _LIBCPP_INLINE_VISIBILITY 2459 operator __rv<unique_ptr>() { 2460 return __rv<unique_ptr>(*this); 2461 } 2462 2463 _LIBCPP_INLINE_VISIBILITY 2464 unique_ptr(__rv<unique_ptr> __u) 2465 : __ptr_(__u->release(), 2466 _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2467 2468 template <class _Up, class _Ep> 2469 _LIBCPP_INLINE_VISIBILITY 2470 typename enable_if< 2471 !is_array<_Up>::value && 2472 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, 2473 pointer>::value && 2474 is_assignable<deleter_type&, _Ep&>::value, 2475 unique_ptr&>::type 2476 operator=(unique_ptr<_Up, _Ep> __u) { 2477 reset(__u.release()); 2478 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2479 return *this; 2480 } 2481 2482 _LIBCPP_INLINE_VISIBILITY 2483 unique_ptr(pointer __p, deleter_type __d) 2484 : __ptr_(_VSTD::move(__p), _VSTD::move(__d)) {} 2485 #endif // _LIBCPP_CXX03_LANG 2486 2487 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 2488 template <class _Up> 2489 _LIBCPP_INLINE_VISIBILITY 2490 typename enable_if<is_convertible<_Up*, _Tp*>::value && 2491 is_same<_Dp, default_delete<_Tp> >::value, 2492 unique_ptr&>::type 2493 operator=(auto_ptr<_Up> __p) { 2494 reset(__p.release()); 2495 return *this; 2496 } 2497 #endif 2498 2499 _LIBCPP_INLINE_VISIBILITY 2500 ~unique_ptr() { reset(); } 2501 2502 _LIBCPP_INLINE_VISIBILITY 2503 unique_ptr& operator=(nullptr_t) _NOEXCEPT { 2504 reset(); 2505 return *this; 2506 } 2507 2508 _LIBCPP_INLINE_VISIBILITY 2509 typename add_lvalue_reference<_Tp>::type 2510 operator*() const { 2511 return *__ptr_.first(); 2512 } 2513 _LIBCPP_INLINE_VISIBILITY 2514 pointer operator->() const _NOEXCEPT { 2515 return __ptr_.first(); 2516 } 2517 _LIBCPP_INLINE_VISIBILITY 2518 pointer get() const _NOEXCEPT { 2519 return __ptr_.first(); 2520 } 2521 _LIBCPP_INLINE_VISIBILITY 2522 deleter_type& get_deleter() _NOEXCEPT { 2523 return __ptr_.second(); 2524 } 2525 _LIBCPP_INLINE_VISIBILITY 2526 const deleter_type& get_deleter() const _NOEXCEPT { 2527 return __ptr_.second(); 2528 } 2529 _LIBCPP_INLINE_VISIBILITY 2530 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT { 2531 return __ptr_.first() != nullptr; 2532 } 2533 2534 _LIBCPP_INLINE_VISIBILITY 2535 pointer release() _NOEXCEPT { 2536 pointer __t = __ptr_.first(); 2537 __ptr_.first() = pointer(); 2538 return __t; 2539 } 2540 2541 _LIBCPP_INLINE_VISIBILITY 2542 void reset(pointer __p = pointer()) _NOEXCEPT { 2543 pointer __tmp = __ptr_.first(); 2544 __ptr_.first() = __p; 2545 if (__tmp) 2546 __ptr_.second()(__tmp); 2547 } 2548 2549 _LIBCPP_INLINE_VISIBILITY 2550 void swap(unique_ptr& __u) _NOEXCEPT { 2551 __ptr_.swap(__u.__ptr_); 2552 } 2553 }; 2554 2555 2556 template <class _Tp, class _Dp> 2557 class _LIBCPP_TEMPLATE_VIS unique_ptr<_Tp[], _Dp> { 2558 public: 2559 typedef _Tp element_type; 2560 typedef _Dp deleter_type; 2561 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2562 2563 private: 2564 __compressed_pair<pointer, deleter_type> __ptr_; 2565 2566 template <class _From> 2567 struct _CheckArrayPointerConversion : is_same<_From, pointer> {}; 2568 2569 template <class _FromElem> 2570 struct _CheckArrayPointerConversion<_FromElem*> 2571 : integral_constant<bool, 2572 is_same<_FromElem*, pointer>::value || 2573 (is_same<pointer, element_type*>::value && 2574 is_convertible<_FromElem(*)[], element_type(*)[]>::value) 2575 > 2576 {}; 2577 2578 #ifndef _LIBCPP_CXX03_LANG 2579 typedef __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE; 2580 2581 template <bool _Dummy> 2582 using _LValRefType = 2583 typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type; 2584 2585 template <bool _Dummy> 2586 using _GoodRValRefType = 2587 typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type; 2588 2589 template <bool _Dummy> 2590 using _BadRValRefType = 2591 typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type; 2592 2593 template <bool _Dummy, class _Deleter = typename __dependent_type< 2594 __identity<deleter_type>, _Dummy>::type> 2595 using _EnableIfDeleterDefaultConstructible = 2596 typename enable_if<is_default_constructible<_Deleter>::value && 2597 !is_pointer<_Deleter>::value>::type; 2598 2599 template <class _ArgType> 2600 using _EnableIfDeleterConstructible = 2601 typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type; 2602 2603 template <class _Pp> 2604 using _EnableIfPointerConvertible = typename enable_if< 2605 _CheckArrayPointerConversion<_Pp>::value 2606 >::type; 2607 2608 template <class _UPtr, class _Up, 2609 class _ElemT = typename _UPtr::element_type> 2610 using _EnableIfMoveConvertible = typename enable_if< 2611 is_array<_Up>::value && 2612 is_same<pointer, element_type*>::value && 2613 is_same<typename _UPtr::pointer, _ElemT*>::value && 2614 is_convertible<_ElemT(*)[], element_type(*)[]>::value 2615 >::type; 2616 2617 template <class _UDel> 2618 using _EnableIfDeleterConvertible = typename enable_if< 2619 (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) || 2620 (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value) 2621 >::type; 2622 2623 template <class _UDel> 2624 using _EnableIfDeleterAssignable = typename enable_if< 2625 is_assignable<_Dp&, _UDel&&>::value 2626 >::type; 2627 2628 public: 2629 template <bool _Dummy = true, 2630 class = _EnableIfDeleterDefaultConstructible<_Dummy>> 2631 _LIBCPP_INLINE_VISIBILITY 2632 constexpr unique_ptr() noexcept : __ptr_(pointer()) {} 2633 2634 template <bool _Dummy = true, 2635 class = _EnableIfDeleterDefaultConstructible<_Dummy>> 2636 _LIBCPP_INLINE_VISIBILITY 2637 constexpr unique_ptr(nullptr_t) noexcept : __ptr_(pointer()) {} 2638 2639 template <class _Pp, bool _Dummy = true, 2640 class = _EnableIfDeleterDefaultConstructible<_Dummy>, 2641 class = _EnableIfPointerConvertible<_Pp>> 2642 _LIBCPP_INLINE_VISIBILITY 2643 explicit unique_ptr(_Pp __p) noexcept 2644 : __ptr_(__p) {} 2645 2646 template <class _Pp, bool _Dummy = true, 2647 class = _EnableIfDeleterConstructible<_LValRefType<_Dummy>>, 2648 class = _EnableIfPointerConvertible<_Pp>> 2649 _LIBCPP_INLINE_VISIBILITY 2650 unique_ptr(_Pp __p, _LValRefType<_Dummy> __d) noexcept 2651 : __ptr_(__p, __d) {} 2652 2653 template <bool _Dummy = true, 2654 class = _EnableIfDeleterConstructible<_LValRefType<_Dummy>>> 2655 _LIBCPP_INLINE_VISIBILITY 2656 unique_ptr(nullptr_t, _LValRefType<_Dummy> __d) noexcept 2657 : __ptr_(nullptr, __d) {} 2658 2659 template <class _Pp, bool _Dummy = true, 2660 class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy>>, 2661 class = _EnableIfPointerConvertible<_Pp>> 2662 _LIBCPP_INLINE_VISIBILITY 2663 unique_ptr(_Pp __p, _GoodRValRefType<_Dummy> __d) noexcept 2664 : __ptr_(__p, _VSTD::move(__d)) { 2665 static_assert(!is_reference<deleter_type>::value, 2666 "rvalue deleter bound to reference"); 2667 } 2668 2669 template <bool _Dummy = true, 2670 class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy>>> 2671 _LIBCPP_INLINE_VISIBILITY 2672 unique_ptr(nullptr_t, _GoodRValRefType<_Dummy> __d) noexcept 2673 : __ptr_(nullptr, _VSTD::move(__d)) { 2674 static_assert(!is_reference<deleter_type>::value, 2675 "rvalue deleter bound to reference"); 2676 } 2677 2678 template <class _Pp, bool _Dummy = true, 2679 class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy>>, 2680 class = _EnableIfPointerConvertible<_Pp>> 2681 _LIBCPP_INLINE_VISIBILITY 2682 unique_ptr(_Pp __p, _BadRValRefType<_Dummy> __d) = delete; 2683 2684 _LIBCPP_INLINE_VISIBILITY 2685 unique_ptr(unique_ptr&& __u) noexcept 2686 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) { 2687 } 2688 2689 _LIBCPP_INLINE_VISIBILITY 2690 unique_ptr& operator=(unique_ptr&& __u) noexcept { 2691 reset(__u.release()); 2692 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2693 return *this; 2694 } 2695 2696 template <class _Up, class _Ep, 2697 class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, 2698 class = _EnableIfDeleterConvertible<_Ep> 2699 > 2700 _LIBCPP_INLINE_VISIBILITY 2701 unique_ptr(unique_ptr<_Up, _Ep>&& __u) noexcept 2702 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) { 2703 } 2704 2705 template <class _Up, class _Ep, 2706 class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, 2707 class = _EnableIfDeleterAssignable<_Ep> 2708 > 2709 _LIBCPP_INLINE_VISIBILITY 2710 unique_ptr& 2711 operator=(unique_ptr<_Up, _Ep>&& __u) noexcept { 2712 reset(__u.release()); 2713 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2714 return *this; 2715 } 2716 2717 #else // _LIBCPP_CXX03_LANG 2718 private: 2719 template <class _Up> explicit unique_ptr(_Up); 2720 2721 unique_ptr(unique_ptr&); 2722 template <class _Up> unique_ptr(unique_ptr<_Up>&); 2723 2724 unique_ptr& operator=(unique_ptr&); 2725 template <class _Up> unique_ptr& operator=(unique_ptr<_Up>&); 2726 2727 template <class _Up> 2728 unique_ptr(_Up __u, 2729 typename conditional< 2730 is_reference<deleter_type>::value, deleter_type, 2731 typename add_lvalue_reference<const deleter_type>::type>::type, 2732 typename enable_if<is_convertible<_Up, pointer>::value, 2733 __nat>::type = __nat()); 2734 public: 2735 _LIBCPP_INLINE_VISIBILITY 2736 unique_ptr() : __ptr_(pointer()) { 2737 static_assert(!is_pointer<deleter_type>::value, 2738 "unique_ptr constructed with null function pointer deleter"); 2739 } 2740 _LIBCPP_INLINE_VISIBILITY 2741 unique_ptr(nullptr_t) : __ptr_(pointer()) { 2742 static_assert(!is_pointer<deleter_type>::value, 2743 "unique_ptr constructed with null function pointer deleter"); 2744 } 2745 2746 _LIBCPP_INLINE_VISIBILITY 2747 explicit unique_ptr(pointer __p) : __ptr_(__p) { 2748 static_assert(!is_pointer<deleter_type>::value, 2749 "unique_ptr constructed with null function pointer deleter"); 2750 } 2751 2752 _LIBCPP_INLINE_VISIBILITY 2753 unique_ptr(pointer __p, deleter_type __d) 2754 : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {} 2755 2756 _LIBCPP_INLINE_VISIBILITY 2757 unique_ptr(nullptr_t, deleter_type __d) 2758 : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {} 2759 2760 _LIBCPP_INLINE_VISIBILITY 2761 operator __rv<unique_ptr>() { 2762 return __rv<unique_ptr>(*this); 2763 } 2764 2765 _LIBCPP_INLINE_VISIBILITY 2766 unique_ptr(__rv<unique_ptr> __u) 2767 : __ptr_(__u->release(), 2768 _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2769 2770 _LIBCPP_INLINE_VISIBILITY 2771 unique_ptr& operator=(__rv<unique_ptr> __u) { 2772 reset(__u->release()); 2773 __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter()); 2774 return *this; 2775 } 2776 2777 #endif // _LIBCPP_CXX03_LANG 2778 2779 public: 2780 _LIBCPP_INLINE_VISIBILITY 2781 ~unique_ptr() { reset(); } 2782 2783 _LIBCPP_INLINE_VISIBILITY 2784 unique_ptr& operator=(nullptr_t) _NOEXCEPT { 2785 reset(); 2786 return *this; 2787 } 2788 2789 _LIBCPP_INLINE_VISIBILITY 2790 typename add_lvalue_reference<_Tp>::type 2791 operator[](size_t __i) const { 2792 return __ptr_.first()[__i]; 2793 } 2794 _LIBCPP_INLINE_VISIBILITY 2795 pointer get() const _NOEXCEPT { 2796 return __ptr_.first(); 2797 } 2798 2799 _LIBCPP_INLINE_VISIBILITY 2800 deleter_type& get_deleter() _NOEXCEPT { 2801 return __ptr_.second(); 2802 } 2803 2804 _LIBCPP_INLINE_VISIBILITY 2805 const deleter_type& get_deleter() const _NOEXCEPT { 2806 return __ptr_.second(); 2807 } 2808 _LIBCPP_INLINE_VISIBILITY 2809 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT { 2810 return __ptr_.first() != nullptr; 2811 } 2812 2813 _LIBCPP_INLINE_VISIBILITY 2814 pointer release() _NOEXCEPT { 2815 pointer __t = __ptr_.first(); 2816 __ptr_.first() = pointer(); 2817 return __t; 2818 } 2819 2820 template <class _Pp> 2821 _LIBCPP_INLINE_VISIBILITY 2822 typename enable_if< 2823 _CheckArrayPointerConversion<_Pp>::value 2824 >::type 2825 reset(_Pp __p) _NOEXCEPT { 2826 pointer __tmp = __ptr_.first(); 2827 __ptr_.first() = __p; 2828 if (__tmp) 2829 __ptr_.second()(__tmp); 2830 } 2831 2832 _LIBCPP_INLINE_VISIBILITY 2833 void reset(nullptr_t = nullptr) _NOEXCEPT { 2834 pointer __tmp = __ptr_.first(); 2835 __ptr_.first() = nullptr; 2836 if (__tmp) 2837 __ptr_.second()(__tmp); 2838 } 2839 2840 _LIBCPP_INLINE_VISIBILITY 2841 void swap(unique_ptr& __u) _NOEXCEPT { 2842 __ptr_.swap(__u.__ptr_); 2843 } 2844 2845 }; 2846 2847 template <class _Tp, class _Dp> 2848 inline _LIBCPP_INLINE_VISIBILITY 2849 typename enable_if< 2850 __is_swappable<_Dp>::value, 2851 void 2852 >::type 2853 swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} 2854 2855 template <class _T1, class _D1, class _T2, class _D2> 2856 inline _LIBCPP_INLINE_VISIBILITY 2857 bool 2858 operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} 2859 2860 template <class _T1, class _D1, class _T2, class _D2> 2861 inline _LIBCPP_INLINE_VISIBILITY 2862 bool 2863 operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} 2864 2865 template <class _T1, class _D1, class _T2, class _D2> 2866 inline _LIBCPP_INLINE_VISIBILITY 2867 bool 2868 operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) 2869 { 2870 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2871 typedef typename unique_ptr<_T2, _D2>::pointer _P2; 2872 typedef typename common_type<_P1, _P2>::type _Vp; 2873 return less<_Vp>()(__x.get(), __y.get()); 2874 } 2875 2876 template <class _T1, class _D1, class _T2, class _D2> 2877 inline _LIBCPP_INLINE_VISIBILITY 2878 bool 2879 operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} 2880 2881 template <class _T1, class _D1, class _T2, class _D2> 2882 inline _LIBCPP_INLINE_VISIBILITY 2883 bool 2884 operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} 2885 2886 template <class _T1, class _D1, class _T2, class _D2> 2887 inline _LIBCPP_INLINE_VISIBILITY 2888 bool 2889 operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} 2890 2891 template <class _T1, class _D1> 2892 inline _LIBCPP_INLINE_VISIBILITY 2893 bool 2894 operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2895 { 2896 return !__x; 2897 } 2898 2899 template <class _T1, class _D1> 2900 inline _LIBCPP_INLINE_VISIBILITY 2901 bool 2902 operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2903 { 2904 return !__x; 2905 } 2906 2907 template <class _T1, class _D1> 2908 inline _LIBCPP_INLINE_VISIBILITY 2909 bool 2910 operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2911 { 2912 return static_cast<bool>(__x); 2913 } 2914 2915 template <class _T1, class _D1> 2916 inline _LIBCPP_INLINE_VISIBILITY 2917 bool 2918 operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2919 { 2920 return static_cast<bool>(__x); 2921 } 2922 2923 template <class _T1, class _D1> 2924 inline _LIBCPP_INLINE_VISIBILITY 2925 bool 2926 operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2927 { 2928 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2929 return less<_P1>()(__x.get(), nullptr); 2930 } 2931 2932 template <class _T1, class _D1> 2933 inline _LIBCPP_INLINE_VISIBILITY 2934 bool 2935 operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2936 { 2937 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2938 return less<_P1>()(nullptr, __x.get()); 2939 } 2940 2941 template <class _T1, class _D1> 2942 inline _LIBCPP_INLINE_VISIBILITY 2943 bool 2944 operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2945 { 2946 return nullptr < __x; 2947 } 2948 2949 template <class _T1, class _D1> 2950 inline _LIBCPP_INLINE_VISIBILITY 2951 bool 2952 operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2953 { 2954 return __x < nullptr; 2955 } 2956 2957 template <class _T1, class _D1> 2958 inline _LIBCPP_INLINE_VISIBILITY 2959 bool 2960 operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2961 { 2962 return !(nullptr < __x); 2963 } 2964 2965 template <class _T1, class _D1> 2966 inline _LIBCPP_INLINE_VISIBILITY 2967 bool 2968 operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2969 { 2970 return !(__x < nullptr); 2971 } 2972 2973 template <class _T1, class _D1> 2974 inline _LIBCPP_INLINE_VISIBILITY 2975 bool 2976 operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2977 { 2978 return !(__x < nullptr); 2979 } 2980 2981 template <class _T1, class _D1> 2982 inline _LIBCPP_INLINE_VISIBILITY 2983 bool 2984 operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2985 { 2986 return !(nullptr < __x); 2987 } 2988 2989 #ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2990 2991 template <class _Tp, class _Dp> 2992 inline _LIBCPP_INLINE_VISIBILITY 2993 unique_ptr<_Tp, _Dp> 2994 move(unique_ptr<_Tp, _Dp>& __t) 2995 { 2996 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t)); 2997 } 2998 2999 #endif 3000 3001 #if _LIBCPP_STD_VER > 11 3002 3003 template<class _Tp> 3004 struct __unique_if 3005 { 3006 typedef unique_ptr<_Tp> __unique_single; 3007 }; 3008 3009 template<class _Tp> 3010 struct __unique_if<_Tp[]> 3011 { 3012 typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; 3013 }; 3014 3015 template<class _Tp, size_t _Np> 3016 struct __unique_if<_Tp[_Np]> 3017 { 3018 typedef void __unique_array_known_bound; 3019 }; 3020 3021 template<class _Tp, class... _Args> 3022 inline _LIBCPP_INLINE_VISIBILITY 3023 typename __unique_if<_Tp>::__unique_single 3024 make_unique(_Args&&... __args) 3025 { 3026 return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...)); 3027 } 3028 3029 template<class _Tp> 3030 inline _LIBCPP_INLINE_VISIBILITY 3031 typename __unique_if<_Tp>::__unique_array_unknown_bound 3032 make_unique(size_t __n) 3033 { 3034 typedef typename remove_extent<_Tp>::type _Up; 3035 return unique_ptr<_Tp>(new _Up[__n]()); 3036 } 3037 3038 template<class _Tp, class... _Args> 3039 typename __unique_if<_Tp>::__unique_array_known_bound 3040 make_unique(_Args&&...) = delete; 3041 3042 #endif // _LIBCPP_STD_VER > 11 3043 3044 template <class _Tp, class _Dp> 3045 #ifdef _LIBCPP_CXX03_LANG 3046 struct _LIBCPP_TEMPLATE_VIS hash<unique_ptr<_Tp, _Dp> > 3047 #else 3048 struct _LIBCPP_TEMPLATE_VIS hash<__enable_hash_helper< 3049 unique_ptr<_Tp, _Dp>, typename unique_ptr<_Tp, _Dp>::pointer>> 3050 #endif 3051 { 3052 typedef unique_ptr<_Tp, _Dp> argument_type; 3053 typedef size_t result_type; 3054 _LIBCPP_INLINE_VISIBILITY 3055 result_type operator()(const argument_type& __ptr) const 3056 { 3057 typedef typename argument_type::pointer pointer; 3058 return hash<pointer>()(__ptr.get()); 3059 } 3060 }; 3061 3062 struct __destruct_n 3063 { 3064 private: 3065 size_t __size_; 3066 3067 template <class _Tp> 3068 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT 3069 {for (size_t __i = 0; __i < __size_; ++__i, ++__p) __p->~_Tp();} 3070 3071 template <class _Tp> 3072 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT 3073 {} 3074 3075 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT 3076 {++__size_;} 3077 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT 3078 {} 3079 3080 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT 3081 {__size_ = __s;} 3082 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT 3083 {} 3084 public: 3085 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT 3086 : __size_(__s) {} 3087 3088 template <class _Tp> 3089 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT 3090 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3091 3092 template <class _Tp> 3093 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT 3094 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3095 3096 template <class _Tp> 3097 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT 3098 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3099 }; 3100 3101 template <class _Alloc> 3102 class __allocator_destructor 3103 { 3104 typedef allocator_traits<_Alloc> __alloc_traits; 3105 public: 3106 typedef typename __alloc_traits::pointer pointer; 3107 typedef typename __alloc_traits::size_type size_type; 3108 private: 3109 _Alloc& __alloc_; 3110 size_type __s_; 3111 public: 3112 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) 3113 _NOEXCEPT 3114 : __alloc_(__a), __s_(__s) {} 3115 _LIBCPP_INLINE_VISIBILITY 3116 void operator()(pointer __p) _NOEXCEPT 3117 {__alloc_traits::deallocate(__alloc_, __p, __s_);} 3118 }; 3119 3120 template <class _InputIterator, class _ForwardIterator> 3121 _ForwardIterator 3122 uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) 3123 { 3124 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3125 #ifndef _LIBCPP_NO_EXCEPTIONS 3126 _ForwardIterator __s = __r; 3127 try 3128 { 3129 #endif 3130 for (; __f != __l; ++__f, (void) ++__r) 3131 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3132 #ifndef _LIBCPP_NO_EXCEPTIONS 3133 } 3134 catch (...) 3135 { 3136 for (; __s != __r; ++__s) 3137 __s->~value_type(); 3138 throw; 3139 } 3140 #endif 3141 return __r; 3142 } 3143 3144 template <class _InputIterator, class _Size, class _ForwardIterator> 3145 _ForwardIterator 3146 uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) 3147 { 3148 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3149 #ifndef _LIBCPP_NO_EXCEPTIONS 3150 _ForwardIterator __s = __r; 3151 try 3152 { 3153 #endif 3154 for (; __n > 0; ++__f, (void) ++__r, (void) --__n) 3155 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3156 #ifndef _LIBCPP_NO_EXCEPTIONS 3157 } 3158 catch (...) 3159 { 3160 for (; __s != __r; ++__s) 3161 __s->~value_type(); 3162 throw; 3163 } 3164 #endif 3165 return __r; 3166 } 3167 3168 template <class _ForwardIterator, class _Tp> 3169 void 3170 uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) 3171 { 3172 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3173 #ifndef _LIBCPP_NO_EXCEPTIONS 3174 _ForwardIterator __s = __f; 3175 try 3176 { 3177 #endif 3178 for (; __f != __l; ++__f) 3179 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3180 #ifndef _LIBCPP_NO_EXCEPTIONS 3181 } 3182 catch (...) 3183 { 3184 for (; __s != __f; ++__s) 3185 __s->~value_type(); 3186 throw; 3187 } 3188 #endif 3189 } 3190 3191 template <class _ForwardIterator, class _Size, class _Tp> 3192 _ForwardIterator 3193 uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) 3194 { 3195 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3196 #ifndef _LIBCPP_NO_EXCEPTIONS 3197 _ForwardIterator __s = __f; 3198 try 3199 { 3200 #endif 3201 for (; __n > 0; ++__f, (void) --__n) 3202 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3203 #ifndef _LIBCPP_NO_EXCEPTIONS 3204 } 3205 catch (...) 3206 { 3207 for (; __s != __f; ++__s) 3208 __s->~value_type(); 3209 throw; 3210 } 3211 #endif 3212 return __f; 3213 } 3214 3215 #if _LIBCPP_STD_VER > 14 3216 3217 template <class _Tp> 3218 inline _LIBCPP_INLINE_VISIBILITY 3219 void destroy_at(_Tp* __loc) { 3220 _LIBCPP_ASSERT(__loc, "null pointer given to destroy_at"); 3221 __loc->~_Tp(); 3222 } 3223 3224 template <class _ForwardIterator> 3225 inline _LIBCPP_INLINE_VISIBILITY 3226 void destroy(_ForwardIterator __first, _ForwardIterator __last) { 3227 for (; __first != __last; ++__first) 3228 _VSTD::destroy_at(_VSTD::addressof(*__first)); 3229 } 3230 3231 template <class _ForwardIterator, class _Size> 3232 inline _LIBCPP_INLINE_VISIBILITY 3233 _ForwardIterator destroy_n(_ForwardIterator __first, _Size __n) { 3234 for (; __n > 0; (void)++__first, --__n) 3235 _VSTD::destroy_at(_VSTD::addressof(*__first)); 3236 return __first; 3237 } 3238 3239 template <class _ForwardIterator> 3240 inline _LIBCPP_INLINE_VISIBILITY 3241 void uninitialized_default_construct(_ForwardIterator __first, _ForwardIterator __last) { 3242 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3243 auto __idx = __first; 3244 #ifndef _LIBCPP_NO_EXCEPTIONS 3245 try { 3246 #endif 3247 for (; __idx != __last; ++__idx) 3248 ::new((void*)_VSTD::addressof(*__idx)) _Vt; 3249 #ifndef _LIBCPP_NO_EXCEPTIONS 3250 } catch (...) { 3251 _VSTD::destroy(__first, __idx); 3252 throw; 3253 } 3254 #endif 3255 } 3256 3257 template <class _ForwardIterator, class _Size> 3258 inline _LIBCPP_INLINE_VISIBILITY 3259 _ForwardIterator uninitialized_default_construct_n(_ForwardIterator __first, _Size __n) { 3260 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3261 auto __idx = __first; 3262 #ifndef _LIBCPP_NO_EXCEPTIONS 3263 try { 3264 #endif 3265 for (; __n > 0; (void)++__idx, --__n) 3266 ::new((void*)_VSTD::addressof(*__idx)) _Vt; 3267 return __idx; 3268 #ifndef _LIBCPP_NO_EXCEPTIONS 3269 } catch (...) { 3270 _VSTD::destroy(__first, __idx); 3271 throw; 3272 } 3273 #endif 3274 } 3275 3276 3277 template <class _ForwardIterator> 3278 inline _LIBCPP_INLINE_VISIBILITY 3279 void uninitialized_value_construct(_ForwardIterator __first, _ForwardIterator __last) { 3280 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3281 auto __idx = __first; 3282 #ifndef _LIBCPP_NO_EXCEPTIONS 3283 try { 3284 #endif 3285 for (; __idx != __last; ++__idx) 3286 ::new((void*)_VSTD::addressof(*__idx)) _Vt(); 3287 #ifndef _LIBCPP_NO_EXCEPTIONS 3288 } catch (...) { 3289 _VSTD::destroy(__first, __idx); 3290 throw; 3291 } 3292 #endif 3293 } 3294 3295 template <class _ForwardIterator, class _Size> 3296 inline _LIBCPP_INLINE_VISIBILITY 3297 _ForwardIterator uninitialized_value_construct_n(_ForwardIterator __first, _Size __n) { 3298 using _Vt = typename iterator_traits<_ForwardIterator>::value_type; 3299 auto __idx = __first; 3300 #ifndef _LIBCPP_NO_EXCEPTIONS 3301 try { 3302 #endif 3303 for (; __n > 0; (void)++__idx, --__n) 3304 ::new((void*)_VSTD::addressof(*__idx)) _Vt(); 3305 return __idx; 3306 #ifndef _LIBCPP_NO_EXCEPTIONS 3307 } catch (...) { 3308 _VSTD::destroy(__first, __idx); 3309 throw; 3310 } 3311 #endif 3312 } 3313 3314 3315 template <class _InputIt, class _ForwardIt> 3316 inline _LIBCPP_INLINE_VISIBILITY 3317 _ForwardIt uninitialized_move(_InputIt __first, _InputIt __last, _ForwardIt __first_res) { 3318 using _Vt = typename iterator_traits<_ForwardIt>::value_type; 3319 auto __idx = __first_res; 3320 #ifndef _LIBCPP_NO_EXCEPTIONS 3321 try { 3322 #endif 3323 for (; __first != __last; (void)++__idx, ++__first) 3324 ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first)); 3325 return __idx; 3326 #ifndef _LIBCPP_NO_EXCEPTIONS 3327 } catch (...) { 3328 _VSTD::destroy(__first_res, __idx); 3329 throw; 3330 } 3331 #endif 3332 } 3333 3334 template <class _InputIt, class _Size, class _ForwardIt> 3335 inline _LIBCPP_INLINE_VISIBILITY 3336 pair<_InputIt, _ForwardIt> 3337 uninitialized_move_n(_InputIt __first, _Size __n, _ForwardIt __first_res) { 3338 using _Vt = typename iterator_traits<_ForwardIt>::value_type; 3339 auto __idx = __first_res; 3340 #ifndef _LIBCPP_NO_EXCEPTIONS 3341 try { 3342 #endif 3343 for (; __n > 0; ++__idx, (void)++__first, --__n) 3344 ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first)); 3345 return {__first, __idx}; 3346 #ifndef _LIBCPP_NO_EXCEPTIONS 3347 } catch (...) { 3348 _VSTD::destroy(__first_res, __idx); 3349 throw; 3350 } 3351 #endif 3352 } 3353 3354 3355 #endif // _LIBCPP_STD_VER > 14 3356 3357 // NOTE: Relaxed and acq/rel atomics (for increment and decrement respectively) 3358 // should be sufficient for thread safety. 3359 // See https://bugs.llvm.org/show_bug.cgi?id=22803 3360 #if defined(__clang__) && __has_builtin(__atomic_add_fetch) \ 3361 && defined(__ATOMIC_RELAXED) \ 3362 && defined(__ATOMIC_ACQ_REL) 3363 # define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT 3364 #elif !defined(__clang__) && defined(_GNUC_VER) && _GNUC_VER >= 407 3365 # define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT 3366 #endif 3367 3368 template <class _Tp> 3369 inline _LIBCPP_INLINE_VISIBILITY _Tp 3370 __libcpp_atomic_refcount_increment(_Tp& __t) _NOEXCEPT 3371 { 3372 #if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS) 3373 return __atomic_add_fetch(&__t, 1, __ATOMIC_RELAXED); 3374 #else 3375 return __t += 1; 3376 #endif 3377 } 3378 3379 template <class _Tp> 3380 inline _LIBCPP_INLINE_VISIBILITY _Tp 3381 __libcpp_atomic_refcount_decrement(_Tp& __t) _NOEXCEPT 3382 { 3383 #if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS) 3384 return __atomic_add_fetch(&__t, -1, __ATOMIC_ACQ_REL); 3385 #else 3386 return __t -= 1; 3387 #endif 3388 } 3389 3390 class _LIBCPP_EXCEPTION_ABI bad_weak_ptr 3391 : public std::exception 3392 { 3393 public: 3394 virtual ~bad_weak_ptr() _NOEXCEPT; 3395 virtual const char* what() const _NOEXCEPT; 3396 }; 3397 3398 _LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINE 3399 void __throw_bad_weak_ptr() 3400 { 3401 #ifndef _LIBCPP_NO_EXCEPTIONS 3402 throw bad_weak_ptr(); 3403 #else 3404 _VSTD::abort(); 3405 #endif 3406 } 3407 3408 template<class _Tp> class _LIBCPP_TEMPLATE_VIS weak_ptr; 3409 3410 class _LIBCPP_TYPE_VIS __shared_count 3411 { 3412 __shared_count(const __shared_count&); 3413 __shared_count& operator=(const __shared_count&); 3414 3415 protected: 3416 long __shared_owners_; 3417 virtual ~__shared_count(); 3418 private: 3419 virtual void __on_zero_shared() _NOEXCEPT = 0; 3420 3421 public: 3422 _LIBCPP_INLINE_VISIBILITY 3423 explicit __shared_count(long __refs = 0) _NOEXCEPT 3424 : __shared_owners_(__refs) {} 3425 3426 #if defined(_LIBCPP_BUILDING_MEMORY) && \ 3427 defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS) 3428 void __add_shared() _NOEXCEPT; 3429 bool __release_shared() _NOEXCEPT; 3430 #else 3431 _LIBCPP_INLINE_VISIBILITY 3432 void __add_shared() _NOEXCEPT { 3433 __libcpp_atomic_refcount_increment(__shared_owners_); 3434 } 3435 _LIBCPP_INLINE_VISIBILITY 3436 bool __release_shared() _NOEXCEPT { 3437 if (__libcpp_atomic_refcount_decrement(__shared_owners_) == -1) { 3438 __on_zero_shared(); 3439 return true; 3440 } 3441 return false; 3442 } 3443 #endif 3444 _LIBCPP_INLINE_VISIBILITY 3445 long use_count() const _NOEXCEPT { 3446 return __libcpp_relaxed_load(&__shared_owners_) + 1; 3447 } 3448 }; 3449 3450 class _LIBCPP_TYPE_VIS __shared_weak_count 3451 : private __shared_count 3452 { 3453 long __shared_weak_owners_; 3454 3455 public: 3456 _LIBCPP_INLINE_VISIBILITY 3457 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT 3458 : __shared_count(__refs), 3459 __shared_weak_owners_(__refs) {} 3460 protected: 3461 virtual ~__shared_weak_count(); 3462 3463 public: 3464 #if defined(_LIBCPP_BUILDING_MEMORY) && \ 3465 defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS) 3466 void __add_shared() _NOEXCEPT; 3467 void __add_weak() _NOEXCEPT; 3468 void __release_shared() _NOEXCEPT; 3469 #else 3470 _LIBCPP_INLINE_VISIBILITY 3471 void __add_shared() _NOEXCEPT { 3472 __shared_count::__add_shared(); 3473 } 3474 _LIBCPP_INLINE_VISIBILITY 3475 void __add_weak() _NOEXCEPT { 3476 __libcpp_atomic_refcount_increment(__shared_weak_owners_); 3477 } 3478 _LIBCPP_INLINE_VISIBILITY 3479 void __release_shared() _NOEXCEPT { 3480 if (__shared_count::__release_shared()) 3481 __release_weak(); 3482 } 3483 #endif 3484 void __release_weak() _NOEXCEPT; 3485 _LIBCPP_INLINE_VISIBILITY 3486 long use_count() const _NOEXCEPT {return __shared_count::use_count();} 3487 __shared_weak_count* lock() _NOEXCEPT; 3488 3489 // Define the function out only if we build static libc++ without RTTI. 3490 // Otherwise we may break clients who need to compile their projects with 3491 // -fno-rtti and yet link against a libc++.dylib compiled 3492 // without -fno-rtti. 3493 #if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC) 3494 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3495 #endif 3496 private: 3497 virtual void __on_zero_shared_weak() _NOEXCEPT = 0; 3498 }; 3499 3500 template <class _Tp, class _Dp, class _Alloc> 3501 class __shared_ptr_pointer 3502 : public __shared_weak_count 3503 { 3504 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; 3505 public: 3506 _LIBCPP_INLINE_VISIBILITY 3507 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) 3508 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {} 3509 3510 #ifndef _LIBCPP_NO_RTTI 3511 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3512 #endif 3513 3514 private: 3515 virtual void __on_zero_shared() _NOEXCEPT; 3516 virtual void __on_zero_shared_weak() _NOEXCEPT; 3517 }; 3518 3519 #ifndef _LIBCPP_NO_RTTI 3520 3521 template <class _Tp, class _Dp, class _Alloc> 3522 const void* 3523 __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT 3524 { 3525 return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : nullptr; 3526 } 3527 3528 #endif // _LIBCPP_NO_RTTI 3529 3530 template <class _Tp, class _Dp, class _Alloc> 3531 void 3532 __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT 3533 { 3534 __data_.first().second()(__data_.first().first()); 3535 __data_.first().second().~_Dp(); 3536 } 3537 3538 template <class _Tp, class _Dp, class _Alloc> 3539 void 3540 __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3541 { 3542 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al; 3543 typedef allocator_traits<_Al> _ATraits; 3544 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3545 3546 _Al __a(__data_.second()); 3547 __data_.second().~_Alloc(); 3548 __a.deallocate(_PTraits::pointer_to(*this), 1); 3549 } 3550 3551 template <class _Tp, class _Alloc> 3552 class __shared_ptr_emplace 3553 : public __shared_weak_count 3554 { 3555 __compressed_pair<_Alloc, _Tp> __data_; 3556 public: 3557 #ifndef _LIBCPP_HAS_NO_VARIADICS 3558 3559 _LIBCPP_INLINE_VISIBILITY 3560 __shared_ptr_emplace(_Alloc __a) 3561 : __data_(_VSTD::move(__a)) {} 3562 3563 template <class ..._Args> 3564 _LIBCPP_INLINE_VISIBILITY 3565 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) 3566 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a), 3567 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {} 3568 3569 #else // _LIBCPP_HAS_NO_VARIADICS 3570 3571 _LIBCPP_INLINE_VISIBILITY 3572 __shared_ptr_emplace(_Alloc __a) 3573 : __data_(__a) {} 3574 3575 template <class _A0> 3576 _LIBCPP_INLINE_VISIBILITY 3577 __shared_ptr_emplace(_Alloc __a, _A0& __a0) 3578 : __data_(__a, _Tp(__a0)) {} 3579 3580 template <class _A0, class _A1> 3581 _LIBCPP_INLINE_VISIBILITY 3582 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) 3583 : __data_(__a, _Tp(__a0, __a1)) {} 3584 3585 template <class _A0, class _A1, class _A2> 3586 _LIBCPP_INLINE_VISIBILITY 3587 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) 3588 : __data_(__a, _Tp(__a0, __a1, __a2)) {} 3589 3590 #endif // _LIBCPP_HAS_NO_VARIADICS 3591 3592 private: 3593 virtual void __on_zero_shared() _NOEXCEPT; 3594 virtual void __on_zero_shared_weak() _NOEXCEPT; 3595 public: 3596 _LIBCPP_INLINE_VISIBILITY 3597 _Tp* get() _NOEXCEPT {return &__data_.second();} 3598 }; 3599 3600 template <class _Tp, class _Alloc> 3601 void 3602 __shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT 3603 { 3604 __data_.second().~_Tp(); 3605 } 3606 3607 template <class _Tp, class _Alloc> 3608 void 3609 __shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3610 { 3611 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type _Al; 3612 typedef allocator_traits<_Al> _ATraits; 3613 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3614 _Al __a(__data_.first()); 3615 __data_.first().~_Alloc(); 3616 __a.deallocate(_PTraits::pointer_to(*this), 1); 3617 } 3618 3619 struct __shared_ptr_dummy_rebind_allocator_type; 3620 template <> 3621 class _LIBCPP_TEMPLATE_VIS allocator<__shared_ptr_dummy_rebind_allocator_type> 3622 { 3623 public: 3624 template <class _Other> 3625 struct rebind 3626 { 3627 typedef allocator<_Other> other; 3628 }; 3629 }; 3630 3631 template<class _Tp> class _LIBCPP_TEMPLATE_VIS enable_shared_from_this; 3632 3633 template<class _Tp> 3634 class _LIBCPP_TEMPLATE_VIS shared_ptr 3635 { 3636 public: 3637 typedef _Tp element_type; 3638 3639 #if _LIBCPP_STD_VER > 14 3640 typedef weak_ptr<_Tp> weak_type; 3641 #endif 3642 private: 3643 element_type* __ptr_; 3644 __shared_weak_count* __cntrl_; 3645 3646 struct __nat {int __for_bool_;}; 3647 public: 3648 _LIBCPP_INLINE_VISIBILITY 3649 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT; 3650 _LIBCPP_INLINE_VISIBILITY 3651 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT; 3652 template<class _Yp> 3653 explicit shared_ptr(_Yp* __p, 3654 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3655 template<class _Yp, class _Dp> 3656 shared_ptr(_Yp* __p, _Dp __d, 3657 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3658 template<class _Yp, class _Dp, class _Alloc> 3659 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 3660 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3661 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); 3662 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); 3663 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT; 3664 _LIBCPP_INLINE_VISIBILITY 3665 shared_ptr(const shared_ptr& __r) _NOEXCEPT; 3666 template<class _Yp> 3667 _LIBCPP_INLINE_VISIBILITY 3668 shared_ptr(const shared_ptr<_Yp>& __r, 3669 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()) 3670 _NOEXCEPT; 3671 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3672 _LIBCPP_INLINE_VISIBILITY 3673 shared_ptr(shared_ptr&& __r) _NOEXCEPT; 3674 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(shared_ptr<_Yp>&& __r, 3675 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()) 3676 _NOEXCEPT; 3677 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3678 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, 3679 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type= __nat()); 3680 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 3681 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3682 template<class _Yp> 3683 shared_ptr(auto_ptr<_Yp>&& __r, 3684 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3685 #else 3686 template<class _Yp> 3687 shared_ptr(auto_ptr<_Yp> __r, 3688 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3689 #endif 3690 #endif 3691 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3692 template <class _Yp, class _Dp> 3693 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3694 typename enable_if 3695 < 3696 !is_lvalue_reference<_Dp>::value && 3697 !is_array<_Yp>::value && 3698 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3699 __nat 3700 >::type = __nat()); 3701 template <class _Yp, class _Dp> 3702 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3703 typename enable_if 3704 < 3705 is_lvalue_reference<_Dp>::value && 3706 !is_array<_Yp>::value && 3707 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3708 __nat 3709 >::type = __nat()); 3710 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3711 template <class _Yp, class _Dp> 3712 shared_ptr(unique_ptr<_Yp, _Dp>, 3713 typename enable_if 3714 < 3715 !is_lvalue_reference<_Dp>::value && 3716 !is_array<_Yp>::value && 3717 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3718 __nat 3719 >::type = __nat()); 3720 template <class _Yp, class _Dp> 3721 shared_ptr(unique_ptr<_Yp, _Dp>, 3722 typename enable_if 3723 < 3724 is_lvalue_reference<_Dp>::value && 3725 !is_array<_Yp>::value && 3726 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3727 __nat 3728 >::type = __nat()); 3729 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3730 3731 ~shared_ptr(); 3732 3733 _LIBCPP_INLINE_VISIBILITY 3734 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT; 3735 template<class _Yp> 3736 typename enable_if 3737 < 3738 is_convertible<_Yp*, element_type*>::value, 3739 shared_ptr& 3740 >::type 3741 _LIBCPP_INLINE_VISIBILITY 3742 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT; 3743 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3744 _LIBCPP_INLINE_VISIBILITY 3745 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT; 3746 template<class _Yp> 3747 typename enable_if 3748 < 3749 is_convertible<_Yp*, element_type*>::value, 3750 shared_ptr<_Tp>& 3751 >::type 3752 _LIBCPP_INLINE_VISIBILITY 3753 operator=(shared_ptr<_Yp>&& __r); 3754 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 3755 template<class _Yp> 3756 _LIBCPP_INLINE_VISIBILITY 3757 typename enable_if 3758 < 3759 !is_array<_Yp>::value && 3760 is_convertible<_Yp*, element_type*>::value, 3761 shared_ptr 3762 >::type& 3763 operator=(auto_ptr<_Yp>&& __r); 3764 #endif 3765 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3766 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 3767 template<class _Yp> 3768 _LIBCPP_INLINE_VISIBILITY 3769 typename enable_if 3770 < 3771 !is_array<_Yp>::value && 3772 is_convertible<_Yp*, element_type*>::value, 3773 shared_ptr& 3774 >::type 3775 operator=(auto_ptr<_Yp> __r); 3776 #endif 3777 #endif 3778 template <class _Yp, class _Dp> 3779 typename enable_if 3780 < 3781 !is_array<_Yp>::value && 3782 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3783 shared_ptr& 3784 >::type 3785 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3786 _LIBCPP_INLINE_VISIBILITY 3787 operator=(unique_ptr<_Yp, _Dp>&& __r); 3788 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3789 _LIBCPP_INLINE_VISIBILITY 3790 operator=(unique_ptr<_Yp, _Dp> __r); 3791 #endif 3792 3793 _LIBCPP_INLINE_VISIBILITY 3794 void swap(shared_ptr& __r) _NOEXCEPT; 3795 _LIBCPP_INLINE_VISIBILITY 3796 void reset() _NOEXCEPT; 3797 template<class _Yp> 3798 typename enable_if 3799 < 3800 is_convertible<_Yp*, element_type*>::value, 3801 void 3802 >::type 3803 _LIBCPP_INLINE_VISIBILITY 3804 reset(_Yp* __p); 3805 template<class _Yp, class _Dp> 3806 typename enable_if 3807 < 3808 is_convertible<_Yp*, element_type*>::value, 3809 void 3810 >::type 3811 _LIBCPP_INLINE_VISIBILITY 3812 reset(_Yp* __p, _Dp __d); 3813 template<class _Yp, class _Dp, class _Alloc> 3814 typename enable_if 3815 < 3816 is_convertible<_Yp*, element_type*>::value, 3817 void 3818 >::type 3819 _LIBCPP_INLINE_VISIBILITY 3820 reset(_Yp* __p, _Dp __d, _Alloc __a); 3821 3822 _LIBCPP_INLINE_VISIBILITY 3823 element_type* get() const _NOEXCEPT {return __ptr_;} 3824 _LIBCPP_INLINE_VISIBILITY 3825 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT 3826 {return *__ptr_;} 3827 _LIBCPP_INLINE_VISIBILITY 3828 element_type* operator->() const _NOEXCEPT {return __ptr_;} 3829 _LIBCPP_INLINE_VISIBILITY 3830 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;} 3831 _LIBCPP_INLINE_VISIBILITY 3832 bool unique() const _NOEXCEPT {return use_count() == 1;} 3833 _LIBCPP_INLINE_VISIBILITY 3834 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;} 3835 template <class _Up> 3836 _LIBCPP_INLINE_VISIBILITY 3837 bool owner_before(shared_ptr<_Up> const& __p) const _NOEXCEPT 3838 {return __cntrl_ < __p.__cntrl_;} 3839 template <class _Up> 3840 _LIBCPP_INLINE_VISIBILITY 3841 bool owner_before(weak_ptr<_Up> const& __p) const _NOEXCEPT 3842 {return __cntrl_ < __p.__cntrl_;} 3843 _LIBCPP_INLINE_VISIBILITY 3844 bool 3845 __owner_equivalent(const shared_ptr& __p) const 3846 {return __cntrl_ == __p.__cntrl_;} 3847 3848 #ifndef _LIBCPP_NO_RTTI 3849 template <class _Dp> 3850 _LIBCPP_INLINE_VISIBILITY 3851 _Dp* __get_deleter() const _NOEXCEPT 3852 {return static_cast<_Dp*>(__cntrl_ 3853 ? const_cast<void *>(__cntrl_->__get_deleter(typeid(_Dp))) 3854 : nullptr);} 3855 #endif // _LIBCPP_NO_RTTI 3856 3857 #ifndef _LIBCPP_HAS_NO_VARIADICS 3858 3859 template<class ..._Args> 3860 static 3861 shared_ptr<_Tp> 3862 make_shared(_Args&& ...__args); 3863 3864 template<class _Alloc, class ..._Args> 3865 static 3866 shared_ptr<_Tp> 3867 allocate_shared(const _Alloc& __a, _Args&& ...__args); 3868 3869 #else // _LIBCPP_HAS_NO_VARIADICS 3870 3871 static shared_ptr<_Tp> make_shared(); 3872 3873 template<class _A0> 3874 static shared_ptr<_Tp> make_shared(_A0&); 3875 3876 template<class _A0, class _A1> 3877 static shared_ptr<_Tp> make_shared(_A0&, _A1&); 3878 3879 template<class _A0, class _A1, class _A2> 3880 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); 3881 3882 template<class _Alloc> 3883 static shared_ptr<_Tp> 3884 allocate_shared(const _Alloc& __a); 3885 3886 template<class _Alloc, class _A0> 3887 static shared_ptr<_Tp> 3888 allocate_shared(const _Alloc& __a, _A0& __a0); 3889 3890 template<class _Alloc, class _A0, class _A1> 3891 static shared_ptr<_Tp> 3892 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); 3893 3894 template<class _Alloc, class _A0, class _A1, class _A2> 3895 static shared_ptr<_Tp> 3896 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); 3897 3898 #endif // _LIBCPP_HAS_NO_VARIADICS 3899 3900 private: 3901 template <class _Yp, bool = is_function<_Yp>::value> 3902 struct __shared_ptr_default_allocator 3903 { 3904 typedef allocator<_Yp> type; 3905 }; 3906 3907 template <class _Yp> 3908 struct __shared_ptr_default_allocator<_Yp, true> 3909 { 3910 typedef allocator<__shared_ptr_dummy_rebind_allocator_type> type; 3911 }; 3912 3913 template <class _Yp, class _OrigPtr> 3914 _LIBCPP_INLINE_VISIBILITY 3915 typename enable_if<is_convertible<_OrigPtr*, 3916 const enable_shared_from_this<_Yp>* 3917 >::value, 3918 void>::type 3919 __enable_weak_this(const enable_shared_from_this<_Yp>* __e, 3920 _OrigPtr* __ptr) _NOEXCEPT 3921 { 3922 typedef typename remove_cv<_Yp>::type _RawYp; 3923 if (__e && __e->__weak_this_.expired()) 3924 { 3925 __e->__weak_this_ = shared_ptr<_RawYp>(*this, 3926 const_cast<_RawYp*>(static_cast<const _Yp*>(__ptr))); 3927 } 3928 } 3929 3930 _LIBCPP_INLINE_VISIBILITY void __enable_weak_this(...) _NOEXCEPT {} 3931 3932 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr; 3933 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr; 3934 }; 3935 3936 3937 template<class _Tp> 3938 inline 3939 _LIBCPP_CONSTEXPR 3940 shared_ptr<_Tp>::shared_ptr() _NOEXCEPT 3941 : __ptr_(0), 3942 __cntrl_(0) 3943 { 3944 } 3945 3946 template<class _Tp> 3947 inline 3948 _LIBCPP_CONSTEXPR 3949 shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT 3950 : __ptr_(0), 3951 __cntrl_(0) 3952 { 3953 } 3954 3955 template<class _Tp> 3956 template<class _Yp> 3957 shared_ptr<_Tp>::shared_ptr(_Yp* __p, 3958 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 3959 : __ptr_(__p) 3960 { 3961 unique_ptr<_Yp> __hold(__p); 3962 typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT; 3963 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, _AllocT > _CntrlBlk; 3964 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), _AllocT()); 3965 __hold.release(); 3966 __enable_weak_this(__p, __p); 3967 } 3968 3969 template<class _Tp> 3970 template<class _Yp, class _Dp> 3971 shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, 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 typename __shared_ptr_default_allocator<_Yp>::type _AllocT; 3980 typedef __shared_ptr_pointer<_Yp*, _Dp, _AllocT > _CntrlBlk; 3981 __cntrl_ = new _CntrlBlk(__p, __d, _AllocT()); 3982 __enable_weak_this(__p, __p); 3983 #ifndef _LIBCPP_NO_EXCEPTIONS 3984 } 3985 catch (...) 3986 { 3987 __d(__p); 3988 throw; 3989 } 3990 #endif // _LIBCPP_NO_EXCEPTIONS 3991 } 3992 3993 template<class _Tp> 3994 template<class _Dp> 3995 shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) 3996 : __ptr_(0) 3997 { 3998 #ifndef _LIBCPP_NO_EXCEPTIONS 3999 try 4000 { 4001 #endif // _LIBCPP_NO_EXCEPTIONS 4002 typedef typename __shared_ptr_default_allocator<_Tp>::type _AllocT; 4003 typedef __shared_ptr_pointer<nullptr_t, _Dp, _AllocT > _CntrlBlk; 4004 __cntrl_ = new _CntrlBlk(__p, __d, _AllocT()); 4005 #ifndef _LIBCPP_NO_EXCEPTIONS 4006 } 4007 catch (...) 4008 { 4009 __d(__p); 4010 throw; 4011 } 4012 #endif // _LIBCPP_NO_EXCEPTIONS 4013 } 4014 4015 template<class _Tp> 4016 template<class _Yp, class _Dp, class _Alloc> 4017 shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 4018 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4019 : __ptr_(__p) 4020 { 4021 #ifndef _LIBCPP_NO_EXCEPTIONS 4022 try 4023 { 4024 #endif // _LIBCPP_NO_EXCEPTIONS 4025 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; 4026 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4027 typedef __allocator_destructor<_A2> _D2; 4028 _A2 __a2(__a); 4029 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4030 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4031 _CntrlBlk(__p, __d, __a); 4032 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4033 __enable_weak_this(__p, __p); 4034 #ifndef _LIBCPP_NO_EXCEPTIONS 4035 } 4036 catch (...) 4037 { 4038 __d(__p); 4039 throw; 4040 } 4041 #endif // _LIBCPP_NO_EXCEPTIONS 4042 } 4043 4044 template<class _Tp> 4045 template<class _Dp, class _Alloc> 4046 shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) 4047 : __ptr_(0) 4048 { 4049 #ifndef _LIBCPP_NO_EXCEPTIONS 4050 try 4051 { 4052 #endif // _LIBCPP_NO_EXCEPTIONS 4053 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; 4054 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4055 typedef __allocator_destructor<_A2> _D2; 4056 _A2 __a2(__a); 4057 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4058 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4059 _CntrlBlk(__p, __d, __a); 4060 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4061 #ifndef _LIBCPP_NO_EXCEPTIONS 4062 } 4063 catch (...) 4064 { 4065 __d(__p); 4066 throw; 4067 } 4068 #endif // _LIBCPP_NO_EXCEPTIONS 4069 } 4070 4071 template<class _Tp> 4072 template<class _Yp> 4073 inline 4074 shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT 4075 : __ptr_(__p), 4076 __cntrl_(__r.__cntrl_) 4077 { 4078 if (__cntrl_) 4079 __cntrl_->__add_shared(); 4080 } 4081 4082 template<class _Tp> 4083 inline 4084 shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT 4085 : __ptr_(__r.__ptr_), 4086 __cntrl_(__r.__cntrl_) 4087 { 4088 if (__cntrl_) 4089 __cntrl_->__add_shared(); 4090 } 4091 4092 template<class _Tp> 4093 template<class _Yp> 4094 inline 4095 shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, 4096 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4097 _NOEXCEPT 4098 : __ptr_(__r.__ptr_), 4099 __cntrl_(__r.__cntrl_) 4100 { 4101 if (__cntrl_) 4102 __cntrl_->__add_shared(); 4103 } 4104 4105 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4106 4107 template<class _Tp> 4108 inline 4109 shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT 4110 : __ptr_(__r.__ptr_), 4111 __cntrl_(__r.__cntrl_) 4112 { 4113 __r.__ptr_ = 0; 4114 __r.__cntrl_ = 0; 4115 } 4116 4117 template<class _Tp> 4118 template<class _Yp> 4119 inline 4120 shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, 4121 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4122 _NOEXCEPT 4123 : __ptr_(__r.__ptr_), 4124 __cntrl_(__r.__cntrl_) 4125 { 4126 __r.__ptr_ = 0; 4127 __r.__cntrl_ = 0; 4128 } 4129 4130 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4131 4132 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 4133 template<class _Tp> 4134 template<class _Yp> 4135 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4136 shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r, 4137 #else 4138 shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r, 4139 #endif 4140 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4141 : __ptr_(__r.get()) 4142 { 4143 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4144 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); 4145 __enable_weak_this(__r.get(), __r.get()); 4146 __r.release(); 4147 } 4148 #endif 4149 4150 template<class _Tp> 4151 template <class _Yp, class _Dp> 4152 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4153 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4154 #else 4155 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4156 #endif 4157 typename enable_if 4158 < 4159 !is_lvalue_reference<_Dp>::value && 4160 !is_array<_Yp>::value && 4161 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4162 __nat 4163 >::type) 4164 : __ptr_(__r.get()) 4165 { 4166 #if _LIBCPP_STD_VER > 11 4167 if (__ptr_ == nullptr) 4168 __cntrl_ = nullptr; 4169 else 4170 #endif 4171 { 4172 typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT; 4173 typedef __shared_ptr_pointer<_Yp*, _Dp, _AllocT > _CntrlBlk; 4174 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), _AllocT()); 4175 __enable_weak_this(__r.get(), __r.get()); 4176 } 4177 __r.release(); 4178 } 4179 4180 template<class _Tp> 4181 template <class _Yp, class _Dp> 4182 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4183 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4184 #else 4185 shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4186 #endif 4187 typename enable_if 4188 < 4189 is_lvalue_reference<_Dp>::value && 4190 !is_array<_Yp>::value && 4191 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4192 __nat 4193 >::type) 4194 : __ptr_(__r.get()) 4195 { 4196 #if _LIBCPP_STD_VER > 11 4197 if (__ptr_ == nullptr) 4198 __cntrl_ = nullptr; 4199 else 4200 #endif 4201 { 4202 typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT; 4203 typedef __shared_ptr_pointer<_Yp*, 4204 reference_wrapper<typename remove_reference<_Dp>::type>, 4205 _AllocT > _CntrlBlk; 4206 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), _AllocT()); 4207 __enable_weak_this(__r.get(), __r.get()); 4208 } 4209 __r.release(); 4210 } 4211 4212 #ifndef _LIBCPP_HAS_NO_VARIADICS 4213 4214 template<class _Tp> 4215 template<class ..._Args> 4216 shared_ptr<_Tp> 4217 shared_ptr<_Tp>::make_shared(_Args&& ...__args) 4218 { 4219 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4220 typedef allocator<_CntrlBlk> _A2; 4221 typedef __allocator_destructor<_A2> _D2; 4222 _A2 __a2; 4223 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4224 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...); 4225 shared_ptr<_Tp> __r; 4226 __r.__ptr_ = __hold2.get()->get(); 4227 __r.__cntrl_ = __hold2.release(); 4228 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4229 return __r; 4230 } 4231 4232 template<class _Tp> 4233 template<class _Alloc, class ..._Args> 4234 shared_ptr<_Tp> 4235 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) 4236 { 4237 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4238 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4239 typedef __allocator_destructor<_A2> _D2; 4240 _A2 __a2(__a); 4241 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4242 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4243 _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...); 4244 shared_ptr<_Tp> __r; 4245 __r.__ptr_ = __hold2.get()->get(); 4246 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4247 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4248 return __r; 4249 } 4250 4251 #else // _LIBCPP_HAS_NO_VARIADICS 4252 4253 template<class _Tp> 4254 shared_ptr<_Tp> 4255 shared_ptr<_Tp>::make_shared() 4256 { 4257 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4258 typedef allocator<_CntrlBlk> _Alloc2; 4259 typedef __allocator_destructor<_Alloc2> _D2; 4260 _Alloc2 __alloc2; 4261 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4262 ::new(__hold2.get()) _CntrlBlk(__alloc2); 4263 shared_ptr<_Tp> __r; 4264 __r.__ptr_ = __hold2.get()->get(); 4265 __r.__cntrl_ = __hold2.release(); 4266 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4267 return __r; 4268 } 4269 4270 template<class _Tp> 4271 template<class _A0> 4272 shared_ptr<_Tp> 4273 shared_ptr<_Tp>::make_shared(_A0& __a0) 4274 { 4275 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4276 typedef allocator<_CntrlBlk> _Alloc2; 4277 typedef __allocator_destructor<_Alloc2> _D2; 4278 _Alloc2 __alloc2; 4279 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4280 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); 4281 shared_ptr<_Tp> __r; 4282 __r.__ptr_ = __hold2.get()->get(); 4283 __r.__cntrl_ = __hold2.release(); 4284 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4285 return __r; 4286 } 4287 4288 template<class _Tp> 4289 template<class _A0, class _A1> 4290 shared_ptr<_Tp> 4291 shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) 4292 { 4293 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4294 typedef allocator<_CntrlBlk> _Alloc2; 4295 typedef __allocator_destructor<_Alloc2> _D2; 4296 _Alloc2 __alloc2; 4297 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4298 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); 4299 shared_ptr<_Tp> __r; 4300 __r.__ptr_ = __hold2.get()->get(); 4301 __r.__cntrl_ = __hold2.release(); 4302 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4303 return __r; 4304 } 4305 4306 template<class _Tp> 4307 template<class _A0, class _A1, class _A2> 4308 shared_ptr<_Tp> 4309 shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4310 { 4311 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4312 typedef allocator<_CntrlBlk> _Alloc2; 4313 typedef __allocator_destructor<_Alloc2> _D2; 4314 _Alloc2 __alloc2; 4315 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4316 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); 4317 shared_ptr<_Tp> __r; 4318 __r.__ptr_ = __hold2.get()->get(); 4319 __r.__cntrl_ = __hold2.release(); 4320 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4321 return __r; 4322 } 4323 4324 template<class _Tp> 4325 template<class _Alloc> 4326 shared_ptr<_Tp> 4327 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) 4328 { 4329 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4330 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4331 typedef __allocator_destructor<_Alloc2> _D2; 4332 _Alloc2 __alloc2(__a); 4333 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4334 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4335 _CntrlBlk(__a); 4336 shared_ptr<_Tp> __r; 4337 __r.__ptr_ = __hold2.get()->get(); 4338 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4339 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4340 return __r; 4341 } 4342 4343 template<class _Tp> 4344 template<class _Alloc, class _A0> 4345 shared_ptr<_Tp> 4346 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) 4347 { 4348 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4349 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4350 typedef __allocator_destructor<_Alloc2> _D2; 4351 _Alloc2 __alloc2(__a); 4352 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4353 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4354 _CntrlBlk(__a, __a0); 4355 shared_ptr<_Tp> __r; 4356 __r.__ptr_ = __hold2.get()->get(); 4357 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4358 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4359 return __r; 4360 } 4361 4362 template<class _Tp> 4363 template<class _Alloc, class _A0, class _A1> 4364 shared_ptr<_Tp> 4365 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4366 { 4367 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4368 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4369 typedef __allocator_destructor<_Alloc2> _D2; 4370 _Alloc2 __alloc2(__a); 4371 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4372 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4373 _CntrlBlk(__a, __a0, __a1); 4374 shared_ptr<_Tp> __r; 4375 __r.__ptr_ = __hold2.get()->get(); 4376 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4377 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4378 return __r; 4379 } 4380 4381 template<class _Tp> 4382 template<class _Alloc, class _A0, class _A1, class _A2> 4383 shared_ptr<_Tp> 4384 shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4385 { 4386 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4387 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4388 typedef __allocator_destructor<_Alloc2> _D2; 4389 _Alloc2 __alloc2(__a); 4390 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4391 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4392 _CntrlBlk(__a, __a0, __a1, __a2); 4393 shared_ptr<_Tp> __r; 4394 __r.__ptr_ = __hold2.get()->get(); 4395 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4396 __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); 4397 return __r; 4398 } 4399 4400 #endif // _LIBCPP_HAS_NO_VARIADICS 4401 4402 template<class _Tp> 4403 shared_ptr<_Tp>::~shared_ptr() 4404 { 4405 if (__cntrl_) 4406 __cntrl_->__release_shared(); 4407 } 4408 4409 template<class _Tp> 4410 inline 4411 shared_ptr<_Tp>& 4412 shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT 4413 { 4414 shared_ptr(__r).swap(*this); 4415 return *this; 4416 } 4417 4418 template<class _Tp> 4419 template<class _Yp> 4420 inline 4421 typename enable_if 4422 < 4423 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4424 shared_ptr<_Tp>& 4425 >::type 4426 shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT 4427 { 4428 shared_ptr(__r).swap(*this); 4429 return *this; 4430 } 4431 4432 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4433 4434 template<class _Tp> 4435 inline 4436 shared_ptr<_Tp>& 4437 shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT 4438 { 4439 shared_ptr(_VSTD::move(__r)).swap(*this); 4440 return *this; 4441 } 4442 4443 template<class _Tp> 4444 template<class _Yp> 4445 inline 4446 typename enable_if 4447 < 4448 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4449 shared_ptr<_Tp>& 4450 >::type 4451 shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) 4452 { 4453 shared_ptr(_VSTD::move(__r)).swap(*this); 4454 return *this; 4455 } 4456 4457 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 4458 template<class _Tp> 4459 template<class _Yp> 4460 inline 4461 typename enable_if 4462 < 4463 !is_array<_Yp>::value && 4464 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4465 shared_ptr<_Tp> 4466 >::type& 4467 shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) 4468 { 4469 shared_ptr(_VSTD::move(__r)).swap(*this); 4470 return *this; 4471 } 4472 #endif 4473 4474 template<class _Tp> 4475 template <class _Yp, class _Dp> 4476 inline 4477 typename enable_if 4478 < 4479 !is_array<_Yp>::value && 4480 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, 4481 typename shared_ptr<_Tp>::element_type*>::value, 4482 shared_ptr<_Tp>& 4483 >::type 4484 shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) 4485 { 4486 shared_ptr(_VSTD::move(__r)).swap(*this); 4487 return *this; 4488 } 4489 4490 #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4491 4492 #if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 4493 template<class _Tp> 4494 template<class _Yp> 4495 inline _LIBCPP_INLINE_VISIBILITY 4496 typename enable_if 4497 < 4498 !is_array<_Yp>::value && 4499 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4500 shared_ptr<_Tp>& 4501 >::type 4502 shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) 4503 { 4504 shared_ptr(__r).swap(*this); 4505 return *this; 4506 } 4507 #endif 4508 4509 template<class _Tp> 4510 template <class _Yp, class _Dp> 4511 inline _LIBCPP_INLINE_VISIBILITY 4512 typename enable_if 4513 < 4514 !is_array<_Yp>::value && 4515 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, 4516 typename shared_ptr<_Tp>::element_type*>::value, 4517 shared_ptr<_Tp>& 4518 >::type 4519 shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) 4520 { 4521 shared_ptr(_VSTD::move(__r)).swap(*this); 4522 return *this; 4523 } 4524 4525 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4526 4527 template<class _Tp> 4528 inline 4529 void 4530 shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT 4531 { 4532 _VSTD::swap(__ptr_, __r.__ptr_); 4533 _VSTD::swap(__cntrl_, __r.__cntrl_); 4534 } 4535 4536 template<class _Tp> 4537 inline 4538 void 4539 shared_ptr<_Tp>::reset() _NOEXCEPT 4540 { 4541 shared_ptr().swap(*this); 4542 } 4543 4544 template<class _Tp> 4545 template<class _Yp> 4546 inline 4547 typename enable_if 4548 < 4549 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4550 void 4551 >::type 4552 shared_ptr<_Tp>::reset(_Yp* __p) 4553 { 4554 shared_ptr(__p).swap(*this); 4555 } 4556 4557 template<class _Tp> 4558 template<class _Yp, class _Dp> 4559 inline 4560 typename enable_if 4561 < 4562 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4563 void 4564 >::type 4565 shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) 4566 { 4567 shared_ptr(__p, __d).swap(*this); 4568 } 4569 4570 template<class _Tp> 4571 template<class _Yp, class _Dp, class _Alloc> 4572 inline 4573 typename enable_if 4574 < 4575 is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, 4576 void 4577 >::type 4578 shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) 4579 { 4580 shared_ptr(__p, __d, __a).swap(*this); 4581 } 4582 4583 #ifndef _LIBCPP_HAS_NO_VARIADICS 4584 4585 template<class _Tp, class ..._Args> 4586 inline _LIBCPP_INLINE_VISIBILITY 4587 typename enable_if 4588 < 4589 !is_array<_Tp>::value, 4590 shared_ptr<_Tp> 4591 >::type 4592 make_shared(_Args&& ...__args) 4593 { 4594 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...); 4595 } 4596 4597 template<class _Tp, class _Alloc, class ..._Args> 4598 inline _LIBCPP_INLINE_VISIBILITY 4599 typename enable_if 4600 < 4601 !is_array<_Tp>::value, 4602 shared_ptr<_Tp> 4603 >::type 4604 allocate_shared(const _Alloc& __a, _Args&& ...__args) 4605 { 4606 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...); 4607 } 4608 4609 #else // _LIBCPP_HAS_NO_VARIADICS 4610 4611 template<class _Tp> 4612 inline _LIBCPP_INLINE_VISIBILITY 4613 shared_ptr<_Tp> 4614 make_shared() 4615 { 4616 return shared_ptr<_Tp>::make_shared(); 4617 } 4618 4619 template<class _Tp, class _A0> 4620 inline _LIBCPP_INLINE_VISIBILITY 4621 shared_ptr<_Tp> 4622 make_shared(_A0& __a0) 4623 { 4624 return shared_ptr<_Tp>::make_shared(__a0); 4625 } 4626 4627 template<class _Tp, class _A0, class _A1> 4628 inline _LIBCPP_INLINE_VISIBILITY 4629 shared_ptr<_Tp> 4630 make_shared(_A0& __a0, _A1& __a1) 4631 { 4632 return shared_ptr<_Tp>::make_shared(__a0, __a1); 4633 } 4634 4635 template<class _Tp, class _A0, class _A1, class _A2> 4636 inline _LIBCPP_INLINE_VISIBILITY 4637 shared_ptr<_Tp> 4638 make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4639 { 4640 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); 4641 } 4642 4643 template<class _Tp, class _Alloc> 4644 inline _LIBCPP_INLINE_VISIBILITY 4645 shared_ptr<_Tp> 4646 allocate_shared(const _Alloc& __a) 4647 { 4648 return shared_ptr<_Tp>::allocate_shared(__a); 4649 } 4650 4651 template<class _Tp, class _Alloc, class _A0> 4652 inline _LIBCPP_INLINE_VISIBILITY 4653 shared_ptr<_Tp> 4654 allocate_shared(const _Alloc& __a, _A0& __a0) 4655 { 4656 return shared_ptr<_Tp>::allocate_shared(__a, __a0); 4657 } 4658 4659 template<class _Tp, class _Alloc, class _A0, class _A1> 4660 inline _LIBCPP_INLINE_VISIBILITY 4661 shared_ptr<_Tp> 4662 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4663 { 4664 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); 4665 } 4666 4667 template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> 4668 inline _LIBCPP_INLINE_VISIBILITY 4669 shared_ptr<_Tp> 4670 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4671 { 4672 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); 4673 } 4674 4675 #endif // _LIBCPP_HAS_NO_VARIADICS 4676 4677 template<class _Tp, class _Up> 4678 inline _LIBCPP_INLINE_VISIBILITY 4679 bool 4680 operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4681 { 4682 return __x.get() == __y.get(); 4683 } 4684 4685 template<class _Tp, class _Up> 4686 inline _LIBCPP_INLINE_VISIBILITY 4687 bool 4688 operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4689 { 4690 return !(__x == __y); 4691 } 4692 4693 template<class _Tp, class _Up> 4694 inline _LIBCPP_INLINE_VISIBILITY 4695 bool 4696 operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4697 { 4698 typedef typename common_type<_Tp*, _Up*>::type _Vp; 4699 return less<_Vp>()(__x.get(), __y.get()); 4700 } 4701 4702 template<class _Tp, class _Up> 4703 inline _LIBCPP_INLINE_VISIBILITY 4704 bool 4705 operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4706 { 4707 return __y < __x; 4708 } 4709 4710 template<class _Tp, class _Up> 4711 inline _LIBCPP_INLINE_VISIBILITY 4712 bool 4713 operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4714 { 4715 return !(__y < __x); 4716 } 4717 4718 template<class _Tp, class _Up> 4719 inline _LIBCPP_INLINE_VISIBILITY 4720 bool 4721 operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4722 { 4723 return !(__x < __y); 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 !__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; 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 static_cast<bool>(__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 static_cast<bool>(__x); 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 less<_Tp*>()(__x.get(), 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 less<_Tp*>()(nullptr, __x.get()); 4772 } 4773 4774 template<class _Tp> 4775 inline _LIBCPP_INLINE_VISIBILITY 4776 bool 4777 operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4778 { 4779 return nullptr < __x; 4780 } 4781 4782 template<class _Tp> 4783 inline _LIBCPP_INLINE_VISIBILITY 4784 bool 4785 operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4786 { 4787 return __x < nullptr; 4788 } 4789 4790 template<class _Tp> 4791 inline _LIBCPP_INLINE_VISIBILITY 4792 bool 4793 operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4794 { 4795 return !(nullptr < __x); 4796 } 4797 4798 template<class _Tp> 4799 inline _LIBCPP_INLINE_VISIBILITY 4800 bool 4801 operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4802 { 4803 return !(__x < nullptr); 4804 } 4805 4806 template<class _Tp> 4807 inline _LIBCPP_INLINE_VISIBILITY 4808 bool 4809 operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4810 { 4811 return !(__x < nullptr); 4812 } 4813 4814 template<class _Tp> 4815 inline _LIBCPP_INLINE_VISIBILITY 4816 bool 4817 operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4818 { 4819 return !(nullptr < __x); 4820 } 4821 4822 template<class _Tp> 4823 inline _LIBCPP_INLINE_VISIBILITY 4824 void 4825 swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT 4826 { 4827 __x.swap(__y); 4828 } 4829 4830 template<class _Tp, class _Up> 4831 inline _LIBCPP_INLINE_VISIBILITY 4832 typename enable_if 4833 < 4834 !is_array<_Tp>::value && !is_array<_Up>::value, 4835 shared_ptr<_Tp> 4836 >::type 4837 static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4838 { 4839 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); 4840 } 4841 4842 template<class _Tp, class _Up> 4843 inline _LIBCPP_INLINE_VISIBILITY 4844 typename enable_if 4845 < 4846 !is_array<_Tp>::value && !is_array<_Up>::value, 4847 shared_ptr<_Tp> 4848 >::type 4849 dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4850 { 4851 _Tp* __p = dynamic_cast<_Tp*>(__r.get()); 4852 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); 4853 } 4854 4855 template<class _Tp, class _Up> 4856 typename enable_if 4857 < 4858 is_array<_Tp>::value == is_array<_Up>::value, 4859 shared_ptr<_Tp> 4860 >::type 4861 const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4862 { 4863 typedef typename remove_extent<_Tp>::type _RTp; 4864 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get())); 4865 } 4866 4867 #ifndef _LIBCPP_NO_RTTI 4868 4869 template<class _Dp, class _Tp> 4870 inline _LIBCPP_INLINE_VISIBILITY 4871 _Dp* 4872 get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT 4873 { 4874 return __p.template __get_deleter<_Dp>(); 4875 } 4876 4877 #endif // _LIBCPP_NO_RTTI 4878 4879 template<class _Tp> 4880 class _LIBCPP_TEMPLATE_VIS weak_ptr 4881 { 4882 public: 4883 typedef _Tp element_type; 4884 private: 4885 element_type* __ptr_; 4886 __shared_weak_count* __cntrl_; 4887 4888 public: 4889 _LIBCPP_INLINE_VISIBILITY 4890 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT; 4891 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r, 4892 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4893 _NOEXCEPT; 4894 _LIBCPP_INLINE_VISIBILITY 4895 weak_ptr(weak_ptr const& __r) _NOEXCEPT; 4896 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r, 4897 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4898 _NOEXCEPT; 4899 4900 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4901 _LIBCPP_INLINE_VISIBILITY 4902 weak_ptr(weak_ptr&& __r) _NOEXCEPT; 4903 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r, 4904 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4905 _NOEXCEPT; 4906 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4907 ~weak_ptr(); 4908 4909 _LIBCPP_INLINE_VISIBILITY 4910 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT; 4911 template<class _Yp> 4912 typename enable_if 4913 < 4914 is_convertible<_Yp*, element_type*>::value, 4915 weak_ptr& 4916 >::type 4917 _LIBCPP_INLINE_VISIBILITY 4918 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT; 4919 4920 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4921 4922 _LIBCPP_INLINE_VISIBILITY 4923 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT; 4924 template<class _Yp> 4925 typename enable_if 4926 < 4927 is_convertible<_Yp*, element_type*>::value, 4928 weak_ptr& 4929 >::type 4930 _LIBCPP_INLINE_VISIBILITY 4931 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT; 4932 4933 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4934 4935 template<class _Yp> 4936 typename enable_if 4937 < 4938 is_convertible<_Yp*, element_type*>::value, 4939 weak_ptr& 4940 >::type 4941 _LIBCPP_INLINE_VISIBILITY 4942 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT; 4943 4944 _LIBCPP_INLINE_VISIBILITY 4945 void swap(weak_ptr& __r) _NOEXCEPT; 4946 _LIBCPP_INLINE_VISIBILITY 4947 void reset() _NOEXCEPT; 4948 4949 _LIBCPP_INLINE_VISIBILITY 4950 long use_count() const _NOEXCEPT 4951 {return __cntrl_ ? __cntrl_->use_count() : 0;} 4952 _LIBCPP_INLINE_VISIBILITY 4953 bool expired() const _NOEXCEPT 4954 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} 4955 shared_ptr<_Tp> lock() const _NOEXCEPT; 4956 template<class _Up> 4957 _LIBCPP_INLINE_VISIBILITY 4958 bool owner_before(const shared_ptr<_Up>& __r) const _NOEXCEPT 4959 {return __cntrl_ < __r.__cntrl_;} 4960 template<class _Up> 4961 _LIBCPP_INLINE_VISIBILITY 4962 bool owner_before(const weak_ptr<_Up>& __r) const _NOEXCEPT 4963 {return __cntrl_ < __r.__cntrl_;} 4964 4965 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr; 4966 template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr; 4967 }; 4968 4969 template<class _Tp> 4970 inline 4971 _LIBCPP_CONSTEXPR 4972 weak_ptr<_Tp>::weak_ptr() _NOEXCEPT 4973 : __ptr_(0), 4974 __cntrl_(0) 4975 { 4976 } 4977 4978 template<class _Tp> 4979 inline 4980 weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT 4981 : __ptr_(__r.__ptr_), 4982 __cntrl_(__r.__cntrl_) 4983 { 4984 if (__cntrl_) 4985 __cntrl_->__add_weak(); 4986 } 4987 4988 template<class _Tp> 4989 template<class _Yp> 4990 inline 4991 weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, 4992 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 4993 _NOEXCEPT 4994 : __ptr_(__r.__ptr_), 4995 __cntrl_(__r.__cntrl_) 4996 { 4997 if (__cntrl_) 4998 __cntrl_->__add_weak(); 4999 } 5000 5001 template<class _Tp> 5002 template<class _Yp> 5003 inline 5004 weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, 5005 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5006 _NOEXCEPT 5007 : __ptr_(__r.__ptr_), 5008 __cntrl_(__r.__cntrl_) 5009 { 5010 if (__cntrl_) 5011 __cntrl_->__add_weak(); 5012 } 5013 5014 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5015 5016 template<class _Tp> 5017 inline 5018 weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT 5019 : __ptr_(__r.__ptr_), 5020 __cntrl_(__r.__cntrl_) 5021 { 5022 __r.__ptr_ = 0; 5023 __r.__cntrl_ = 0; 5024 } 5025 5026 template<class _Tp> 5027 template<class _Yp> 5028 inline 5029 weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r, 5030 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5031 _NOEXCEPT 5032 : __ptr_(__r.__ptr_), 5033 __cntrl_(__r.__cntrl_) 5034 { 5035 __r.__ptr_ = 0; 5036 __r.__cntrl_ = 0; 5037 } 5038 5039 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5040 5041 template<class _Tp> 5042 weak_ptr<_Tp>::~weak_ptr() 5043 { 5044 if (__cntrl_) 5045 __cntrl_->__release_weak(); 5046 } 5047 5048 template<class _Tp> 5049 inline 5050 weak_ptr<_Tp>& 5051 weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT 5052 { 5053 weak_ptr(__r).swap(*this); 5054 return *this; 5055 } 5056 5057 template<class _Tp> 5058 template<class _Yp> 5059 inline 5060 typename enable_if 5061 < 5062 is_convertible<_Yp*, _Tp*>::value, 5063 weak_ptr<_Tp>& 5064 >::type 5065 weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT 5066 { 5067 weak_ptr(__r).swap(*this); 5068 return *this; 5069 } 5070 5071 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5072 5073 template<class _Tp> 5074 inline 5075 weak_ptr<_Tp>& 5076 weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT 5077 { 5078 weak_ptr(_VSTD::move(__r)).swap(*this); 5079 return *this; 5080 } 5081 5082 template<class _Tp> 5083 template<class _Yp> 5084 inline 5085 typename enable_if 5086 < 5087 is_convertible<_Yp*, _Tp*>::value, 5088 weak_ptr<_Tp>& 5089 >::type 5090 weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT 5091 { 5092 weak_ptr(_VSTD::move(__r)).swap(*this); 5093 return *this; 5094 } 5095 5096 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5097 5098 template<class _Tp> 5099 template<class _Yp> 5100 inline 5101 typename enable_if 5102 < 5103 is_convertible<_Yp*, _Tp*>::value, 5104 weak_ptr<_Tp>& 5105 >::type 5106 weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT 5107 { 5108 weak_ptr(__r).swap(*this); 5109 return *this; 5110 } 5111 5112 template<class _Tp> 5113 inline 5114 void 5115 weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT 5116 { 5117 _VSTD::swap(__ptr_, __r.__ptr_); 5118 _VSTD::swap(__cntrl_, __r.__cntrl_); 5119 } 5120 5121 template<class _Tp> 5122 inline _LIBCPP_INLINE_VISIBILITY 5123 void 5124 swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT 5125 { 5126 __x.swap(__y); 5127 } 5128 5129 template<class _Tp> 5130 inline 5131 void 5132 weak_ptr<_Tp>::reset() _NOEXCEPT 5133 { 5134 weak_ptr().swap(*this); 5135 } 5136 5137 template<class _Tp> 5138 template<class _Yp> 5139 shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, 5140 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 5141 : __ptr_(__r.__ptr_), 5142 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) 5143 { 5144 if (__cntrl_ == 0) 5145 __throw_bad_weak_ptr(); 5146 } 5147 5148 template<class _Tp> 5149 shared_ptr<_Tp> 5150 weak_ptr<_Tp>::lock() const _NOEXCEPT 5151 { 5152 shared_ptr<_Tp> __r; 5153 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; 5154 if (__r.__cntrl_) 5155 __r.__ptr_ = __ptr_; 5156 return __r; 5157 } 5158 5159 #if _LIBCPP_STD_VER > 14 5160 template <class _Tp = void> struct owner_less; 5161 #else 5162 template <class _Tp> struct owner_less; 5163 #endif 5164 5165 template <class _Tp> 5166 struct _LIBCPP_TEMPLATE_VIS owner_less<shared_ptr<_Tp> > 5167 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> 5168 { 5169 typedef bool result_type; 5170 _LIBCPP_INLINE_VISIBILITY 5171 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT 5172 {return __x.owner_before(__y);} 5173 _LIBCPP_INLINE_VISIBILITY 5174 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT 5175 {return __x.owner_before(__y);} 5176 _LIBCPP_INLINE_VISIBILITY 5177 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT 5178 {return __x.owner_before(__y);} 5179 }; 5180 5181 template <class _Tp> 5182 struct _LIBCPP_TEMPLATE_VIS owner_less<weak_ptr<_Tp> > 5183 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> 5184 { 5185 typedef bool result_type; 5186 _LIBCPP_INLINE_VISIBILITY 5187 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT 5188 {return __x.owner_before(__y);} 5189 _LIBCPP_INLINE_VISIBILITY 5190 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT 5191 {return __x.owner_before(__y);} 5192 _LIBCPP_INLINE_VISIBILITY 5193 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT 5194 {return __x.owner_before(__y);} 5195 }; 5196 5197 #if _LIBCPP_STD_VER > 14 5198 template <> 5199 struct _LIBCPP_TEMPLATE_VIS owner_less<void> 5200 { 5201 template <class _Tp, class _Up> 5202 _LIBCPP_INLINE_VISIBILITY 5203 bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT 5204 {return __x.owner_before(__y);} 5205 template <class _Tp, class _Up> 5206 _LIBCPP_INLINE_VISIBILITY 5207 bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const _NOEXCEPT 5208 {return __x.owner_before(__y);} 5209 template <class _Tp, class _Up> 5210 _LIBCPP_INLINE_VISIBILITY 5211 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT 5212 {return __x.owner_before(__y);} 5213 template <class _Tp, class _Up> 5214 _LIBCPP_INLINE_VISIBILITY 5215 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const _NOEXCEPT 5216 {return __x.owner_before(__y);} 5217 typedef void is_transparent; 5218 }; 5219 #endif 5220 5221 template<class _Tp> 5222 class _LIBCPP_TEMPLATE_VIS enable_shared_from_this 5223 { 5224 mutable weak_ptr<_Tp> __weak_this_; 5225 protected: 5226 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 5227 enable_shared_from_this() _NOEXCEPT {} 5228 _LIBCPP_INLINE_VISIBILITY 5229 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {} 5230 _LIBCPP_INLINE_VISIBILITY 5231 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT 5232 {return *this;} 5233 _LIBCPP_INLINE_VISIBILITY 5234 ~enable_shared_from_this() {} 5235 public: 5236 _LIBCPP_INLINE_VISIBILITY 5237 shared_ptr<_Tp> shared_from_this() 5238 {return shared_ptr<_Tp>(__weak_this_);} 5239 _LIBCPP_INLINE_VISIBILITY 5240 shared_ptr<_Tp const> shared_from_this() const 5241 {return shared_ptr<const _Tp>(__weak_this_);} 5242 5243 #if _LIBCPP_STD_VER > 14 5244 _LIBCPP_INLINE_VISIBILITY 5245 weak_ptr<_Tp> weak_from_this() _NOEXCEPT 5246 { return __weak_this_; } 5247 5248 _LIBCPP_INLINE_VISIBILITY 5249 weak_ptr<const _Tp> weak_from_this() const _NOEXCEPT 5250 { return __weak_this_; } 5251 #endif // _LIBCPP_STD_VER > 14 5252 5253 template <class _Up> friend class shared_ptr; 5254 }; 5255 5256 template <class _Tp> 5257 struct _LIBCPP_TEMPLATE_VIS hash<shared_ptr<_Tp> > 5258 { 5259 typedef shared_ptr<_Tp> argument_type; 5260 typedef size_t result_type; 5261 5262 _LIBCPP_INLINE_VISIBILITY 5263 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 5264 { 5265 return hash<_Tp*>()(__ptr.get()); 5266 } 5267 }; 5268 5269 template<class _CharT, class _Traits, class _Yp> 5270 inline _LIBCPP_INLINE_VISIBILITY 5271 basic_ostream<_CharT, _Traits>& 5272 operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p); 5273 5274 5275 #if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 5276 5277 class _LIBCPP_TYPE_VIS __sp_mut 5278 { 5279 void* __lx; 5280 public: 5281 void lock() _NOEXCEPT; 5282 void unlock() _NOEXCEPT; 5283 5284 private: 5285 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT; 5286 __sp_mut(const __sp_mut&); 5287 __sp_mut& operator=(const __sp_mut&); 5288 5289 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5290 }; 5291 5292 _LIBCPP_FUNC_VIS _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 5293 __sp_mut& __get_sp_mut(const void*); 5294 5295 template <class _Tp> 5296 inline _LIBCPP_INLINE_VISIBILITY 5297 bool 5298 atomic_is_lock_free(const shared_ptr<_Tp>*) 5299 { 5300 return false; 5301 } 5302 5303 template <class _Tp> 5304 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 5305 shared_ptr<_Tp> 5306 atomic_load(const shared_ptr<_Tp>* __p) 5307 { 5308 __sp_mut& __m = __get_sp_mut(__p); 5309 __m.lock(); 5310 shared_ptr<_Tp> __q = *__p; 5311 __m.unlock(); 5312 return __q; 5313 } 5314 5315 template <class _Tp> 5316 inline _LIBCPP_INLINE_VISIBILITY 5317 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 5318 shared_ptr<_Tp> 5319 atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) 5320 { 5321 return atomic_load(__p); 5322 } 5323 5324 template <class _Tp> 5325 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 5326 void 5327 atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5328 { 5329 __sp_mut& __m = __get_sp_mut(__p); 5330 __m.lock(); 5331 __p->swap(__r); 5332 __m.unlock(); 5333 } 5334 5335 template <class _Tp> 5336 inline _LIBCPP_INLINE_VISIBILITY 5337 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 5338 void 5339 atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5340 { 5341 atomic_store(__p, __r); 5342 } 5343 5344 template <class _Tp> 5345 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 5346 shared_ptr<_Tp> 5347 atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5348 { 5349 __sp_mut& __m = __get_sp_mut(__p); 5350 __m.lock(); 5351 __p->swap(__r); 5352 __m.unlock(); 5353 return __r; 5354 } 5355 5356 template <class _Tp> 5357 inline _LIBCPP_INLINE_VISIBILITY 5358 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 5359 shared_ptr<_Tp> 5360 atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5361 { 5362 return atomic_exchange(__p, __r); 5363 } 5364 5365 template <class _Tp> 5366 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 5367 bool 5368 atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5369 { 5370 shared_ptr<_Tp> __temp; 5371 __sp_mut& __m = __get_sp_mut(__p); 5372 __m.lock(); 5373 if (__p->__owner_equivalent(*__v)) 5374 { 5375 _VSTD::swap(__temp, *__p); 5376 *__p = __w; 5377 __m.unlock(); 5378 return true; 5379 } 5380 _VSTD::swap(__temp, *__v); 5381 *__v = *__p; 5382 __m.unlock(); 5383 return false; 5384 } 5385 5386 template <class _Tp> 5387 inline _LIBCPP_INLINE_VISIBILITY 5388 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 5389 bool 5390 atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5391 { 5392 return atomic_compare_exchange_strong(__p, __v, __w); 5393 } 5394 5395 template <class _Tp> 5396 inline _LIBCPP_INLINE_VISIBILITY 5397 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 5398 bool 5399 atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5400 shared_ptr<_Tp> __w, memory_order, memory_order) 5401 { 5402 return atomic_compare_exchange_strong(__p, __v, __w); 5403 } 5404 5405 template <class _Tp> 5406 inline _LIBCPP_INLINE_VISIBILITY 5407 _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR 5408 bool 5409 atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5410 shared_ptr<_Tp> __w, memory_order, memory_order) 5411 { 5412 return atomic_compare_exchange_weak(__p, __v, __w); 5413 } 5414 5415 #endif // !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 5416 5417 //enum class 5418 #if defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) 5419 # ifndef _LIBCPP_CXX03_LANG 5420 enum class pointer_safety : unsigned char { 5421 relaxed, 5422 preferred, 5423 strict 5424 }; 5425 # endif 5426 #else 5427 struct _LIBCPP_TYPE_VIS pointer_safety 5428 { 5429 enum __lx 5430 { 5431 relaxed, 5432 preferred, 5433 strict 5434 }; 5435 5436 __lx __v_; 5437 5438 _LIBCPP_INLINE_VISIBILITY 5439 pointer_safety() : __v_() {} 5440 5441 _LIBCPP_INLINE_VISIBILITY 5442 pointer_safety(__lx __v) : __v_(__v) {} 5443 _LIBCPP_INLINE_VISIBILITY 5444 operator int() const {return __v_;} 5445 }; 5446 #endif 5447 5448 #if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) && \ 5449 defined(_LIBCPP_BUILDING_MEMORY) 5450 _LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT; 5451 #else 5452 // This function is only offered in C++03 under ABI v1. 5453 # if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) || !defined(_LIBCPP_CXX03_LANG) 5454 inline _LIBCPP_INLINE_VISIBILITY 5455 pointer_safety get_pointer_safety() _NOEXCEPT { 5456 return pointer_safety::relaxed; 5457 } 5458 # endif 5459 #endif 5460 5461 5462 _LIBCPP_FUNC_VIS void declare_reachable(void* __p); 5463 _LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n); 5464 _LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n); 5465 _LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p); 5466 5467 template <class _Tp> 5468 inline _LIBCPP_INLINE_VISIBILITY 5469 _Tp* 5470 undeclare_reachable(_Tp* __p) 5471 { 5472 return static_cast<_Tp*>(__undeclare_reachable(__p)); 5473 } 5474 5475 _LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); 5476 5477 // --- Helper for container swap -- 5478 template <typename _Alloc> 5479 inline _LIBCPP_INLINE_VISIBILITY 5480 void __swap_allocator(_Alloc & __a1, _Alloc & __a2) 5481 #if _LIBCPP_STD_VER >= 14 5482 _NOEXCEPT 5483 #else 5484 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5485 #endif 5486 { 5487 __swap_allocator(__a1, __a2, 5488 integral_constant<bool, _VSTD::allocator_traits<_Alloc>::propagate_on_container_swap::value>()); 5489 } 5490 5491 template <typename _Alloc> 5492 _LIBCPP_INLINE_VISIBILITY 5493 void __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type) 5494 #if _LIBCPP_STD_VER >= 14 5495 _NOEXCEPT 5496 #else 5497 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5498 #endif 5499 { 5500 using _VSTD::swap; 5501 swap(__a1, __a2); 5502 } 5503 5504 template <typename _Alloc> 5505 inline _LIBCPP_INLINE_VISIBILITY 5506 void __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {} 5507 5508 template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> > 5509 struct __noexcept_move_assign_container : public integral_constant<bool, 5510 _Traits::propagate_on_container_move_assignment::value 5511 #if _LIBCPP_STD_VER > 14 5512 || _Traits::is_always_equal::value 5513 #else 5514 && is_nothrow_move_assignable<_Alloc>::value 5515 #endif 5516 > {}; 5517 5518 5519 #ifndef _LIBCPP_HAS_NO_VARIADICS 5520 template <class _Tp, class _Alloc> 5521 struct __temp_value { 5522 typedef allocator_traits<_Alloc> _Traits; 5523 5524 typename aligned_storage<sizeof(_Tp), alignof(_Tp)>::type __v; 5525 _Alloc &__a; 5526 5527 _Tp *__addr() { return reinterpret_cast<_Tp *>(addressof(__v)); } 5528 _Tp & get() { return *__addr(); } 5529 5530 template<class... _Args> 5531 __temp_value(_Alloc &__alloc, _Args&& ... __args) : __a(__alloc) 5532 { _Traits::construct(__a, __addr(), _VSTD::forward<_Args>(__args)...); } 5533 5534 ~__temp_value() { _Traits::destroy(__a, __addr()); } 5535 }; 5536 #endif 5537 5538 _LIBCPP_END_NAMESPACE_STD 5539 5540 _LIBCPP_POP_MACROS 5541 5542 #endif // _LIBCPP_MEMORY 5543
