memory revision 278724
1// -*- C++ -*- 2//===-------------------------- memory ------------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_MEMORY 12#define _LIBCPP_MEMORY 13 14/* 15 memory synopsis 16 17namespace std 18{ 19 20struct allocator_arg_t { }; 21constexpr allocator_arg_t allocator_arg = allocator_arg_t(); 22 23template <class T, class Alloc> struct uses_allocator; 24 25template <class Ptr> 26struct pointer_traits 27{ 28 typedef Ptr pointer; 29 typedef <details> element_type; 30 typedef <details> difference_type; 31 32 template <class U> using rebind = <details>; 33 34 static pointer pointer_to(<details>); 35}; 36 37template <class T> 38struct pointer_traits<T*> 39{ 40 typedef T* pointer; 41 typedef T element_type; 42 typedef ptrdiff_t difference_type; 43 44 template <class U> using rebind = U*; 45 46 static pointer pointer_to(<details>) noexcept; 47}; 48 49template <class Alloc> 50struct allocator_traits 51{ 52 typedef Alloc allocator_type; 53 typedef typename allocator_type::value_type 54 value_type; 55 56 typedef Alloc::pointer | value_type* pointer; 57 typedef Alloc::const_pointer 58 | pointer_traits<pointer>::rebind<const value_type> 59 const_pointer; 60 typedef Alloc::void_pointer 61 | pointer_traits<pointer>::rebind<void> 62 void_pointer; 63 typedef Alloc::const_void_pointer 64 | pointer_traits<pointer>::rebind<const void> 65 const_void_pointer; 66 typedef Alloc::difference_type 67 | pointer_traits<pointer>::difference_type 68 difference_type; 69 typedef Alloc::size_type 70 | make_unsigned<difference_type>::type 71 size_type; 72 typedef Alloc::propagate_on_container_copy_assignment 73 | false_type propagate_on_container_copy_assignment; 74 typedef Alloc::propagate_on_container_move_assignment 75 | false_type propagate_on_container_move_assignment; 76 typedef Alloc::propagate_on_container_swap 77 | false_type propagate_on_container_swap; 78 79 template <class T> using rebind_alloc = Alloc::rebind<U>::other | Alloc<T, Args...>; 80 template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>; 81 82 static pointer allocate(allocator_type& a, size_type n); 83 static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint); 84 85 static void deallocate(allocator_type& a, pointer p, size_type n) noexcept; 86 87 template <class T, class... Args> 88 static void construct(allocator_type& a, T* p, Args&&... args); 89 90 template <class T> 91 static void destroy(allocator_type& a, T* p); 92 93 static size_type max_size(const allocator_type& a); // noexcept in C++14 94 95 static allocator_type 96 select_on_container_copy_construction(const allocator_type& a); 97}; 98 99template <> 100class allocator<void> 101{ 102public: 103 typedef void* pointer; 104 typedef const void* const_pointer; 105 typedef void value_type; 106 107 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 108}; 109 110template <class T> 111class allocator 112{ 113public: 114 typedef size_t size_type; 115 typedef ptrdiff_t difference_type; 116 typedef T* pointer; 117 typedef const T* const_pointer; 118 typedef typename add_lvalue_reference<T>::type reference; 119 typedef typename add_lvalue_reference<const T>::type const_reference; 120 typedef T value_type; 121 122 template <class U> struct rebind {typedef allocator<U> other;}; 123 124 allocator() noexcept; 125 allocator(const allocator&) noexcept; 126 template <class U> allocator(const allocator<U>&) noexcept; 127 ~allocator(); 128 pointer address(reference x) const noexcept; 129 const_pointer address(const_reference x) const noexcept; 130 pointer allocate(size_type, allocator<void>::const_pointer hint = 0); 131 void deallocate(pointer p, size_type n) noexcept; 132 size_type max_size() const noexcept; 133 template<class U, class... Args> 134 void construct(U* p, Args&&... args); 135 template <class U> 136 void destroy(U* p); 137}; 138 139template <class T, class U> 140bool operator==(const allocator<T>&, const allocator<U>&) noexcept; 141 142template <class T, class U> 143bool operator!=(const allocator<T>&, const allocator<U>&) noexcept; 144 145template <class OutputIterator, class T> 146class raw_storage_iterator 147 : public iterator<output_iterator_tag, 148 T, // purposefully not C++03 149 ptrdiff_t, // purposefully not C++03 150 T*, // purposefully not C++03 151 raw_storage_iterator&> // purposefully not C++03 152{ 153public: 154 explicit raw_storage_iterator(OutputIterator x); 155 raw_storage_iterator& operator*(); 156 raw_storage_iterator& operator=(const T& element); 157 raw_storage_iterator& operator++(); 158 raw_storage_iterator operator++(int); 159}; 160 161template <class T> pair<T*,ptrdiff_t> get_temporary_buffer(ptrdiff_t n) noexcept; 162template <class T> void return_temporary_buffer(T* p) noexcept; 163 164template <class T> T* addressof(T& r) noexcept; 165 166template <class InputIterator, class ForwardIterator> 167ForwardIterator 168uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result); 169 170template <class InputIterator, class Size, class ForwardIterator> 171ForwardIterator 172uninitialized_copy_n(InputIterator first, Size n, ForwardIterator result); 173 174template <class ForwardIterator, class T> 175void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x); 176 177template <class ForwardIterator, class Size, class T> 178ForwardIterator 179uninitialized_fill_n(ForwardIterator first, Size n, const T& x); 180 181template <class Y> struct auto_ptr_ref {}; 182 183template<class X> 184class auto_ptr 185{ 186public: 187 typedef X element_type; 188 189 explicit auto_ptr(X* p =0) throw(); 190 auto_ptr(auto_ptr&) throw(); 191 template<class Y> auto_ptr(auto_ptr<Y>&) throw(); 192 auto_ptr& operator=(auto_ptr&) throw(); 193 template<class Y> auto_ptr& operator=(auto_ptr<Y>&) throw(); 194 auto_ptr& operator=(auto_ptr_ref<X> r) throw(); 195 ~auto_ptr() throw(); 196 197 typename add_lvalue_reference<X>::type operator*() const throw(); 198 X* operator->() const throw(); 199 X* get() const throw(); 200 X* release() throw(); 201 void reset(X* p =0) throw(); 202 203 auto_ptr(auto_ptr_ref<X>) throw(); 204 template<class Y> operator auto_ptr_ref<Y>() throw(); 205 template<class Y> operator auto_ptr<Y>() throw(); 206}; 207 208template <class T> 209struct default_delete 210{ 211 constexpr default_delete() noexcept = default; 212 template <class U> default_delete(const default_delete<U>&) noexcept; 213 214 void operator()(T*) const noexcept; 215}; 216 217template <class T> 218struct default_delete<T[]> 219{ 220 constexpr default_delete() noexcept = default; 221 void operator()(T*) const noexcept; 222 template <class U> void operator()(U*) const = delete; 223}; 224 225template <class T, class D = default_delete<T>> 226class unique_ptr 227{ 228public: 229 typedef see below pointer; 230 typedef T element_type; 231 typedef D deleter_type; 232 233 // constructors 234 constexpr unique_ptr() noexcept; 235 explicit unique_ptr(pointer p) noexcept; 236 unique_ptr(pointer p, see below d1) noexcept; 237 unique_ptr(pointer p, see below d2) noexcept; 238 unique_ptr(unique_ptr&& u) noexcept; 239 unique_ptr(nullptr_t) noexcept : unique_ptr() { } 240 template <class U, class E> 241 unique_ptr(unique_ptr<U, E>&& u) noexcept; 242 template <class U> 243 unique_ptr(auto_ptr<U>&& u) noexcept; 244 245 // destructor 246 ~unique_ptr(); 247 248 // assignment 249 unique_ptr& operator=(unique_ptr&& u) noexcept; 250 template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept; 251 unique_ptr& operator=(nullptr_t) noexcept; 252 253 // observers 254 typename add_lvalue_reference<T>::type operator*() const; 255 pointer operator->() const noexcept; 256 pointer get() const noexcept; 257 deleter_type& get_deleter() noexcept; 258 const deleter_type& get_deleter() const noexcept; 259 explicit operator bool() const noexcept; 260 261 // modifiers 262 pointer release() noexcept; 263 void reset(pointer p = pointer()) noexcept; 264 void swap(unique_ptr& u) noexcept; 265}; 266 267template <class T, class D> 268class unique_ptr<T[], D> 269{ 270public: 271 typedef implementation-defined pointer; 272 typedef T element_type; 273 typedef D deleter_type; 274 275 // constructors 276 constexpr unique_ptr() noexcept; 277 explicit unique_ptr(pointer p) noexcept; 278 unique_ptr(pointer p, see below d) noexcept; 279 unique_ptr(pointer p, see below d) noexcept; 280 unique_ptr(unique_ptr&& u) noexcept; 281 unique_ptr(nullptr_t) noexcept : unique_ptr() { } 282 283 // destructor 284 ~unique_ptr(); 285 286 // assignment 287 unique_ptr& operator=(unique_ptr&& u) noexcept; 288 unique_ptr& operator=(nullptr_t) noexcept; 289 290 // observers 291 T& operator[](size_t i) const; 292 pointer get() const noexcept; 293 deleter_type& get_deleter() noexcept; 294 const deleter_type& get_deleter() const noexcept; 295 explicit operator bool() const noexcept; 296 297 // modifiers 298 pointer release() noexcept; 299 void reset(pointer p = pointer()) noexcept; 300 void reset(nullptr_t) noexcept; 301 template <class U> void reset(U) = delete; 302 void swap(unique_ptr& u) noexcept; 303}; 304 305template <class T, class D> 306 void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept; 307 308template <class T1, class D1, class T2, class D2> 309 bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 310template <class T1, class D1, class T2, class D2> 311 bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 312template <class T1, class D1, class T2, class D2> 313 bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 314template <class T1, class D1, class T2, class D2> 315 bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 316template <class T1, class D1, class T2, class D2> 317 bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 318template <class T1, class D1, class T2, class D2> 319 bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 320 321template <class T, class D> 322 bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; 323template <class T, class D> 324 bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept; 325template <class T, class D> 326 bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept; 327template <class T, class D> 328 bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept; 329 330template <class T, class D> 331 bool operator<(const unique_ptr<T, D>& x, nullptr_t); 332template <class T, class D> 333 bool operator<(nullptr_t, const unique_ptr<T, D>& y); 334template <class T, class D> 335 bool operator<=(const unique_ptr<T, D>& x, nullptr_t); 336template <class T, class D> 337 bool operator<=(nullptr_t, const unique_ptr<T, D>& y); 338template <class T, class D> 339 bool operator>(const unique_ptr<T, D>& x, nullptr_t); 340template <class T, class D> 341 bool operator>(nullptr_t, const unique_ptr<T, D>& y); 342template <class T, class D> 343 bool operator>=(const unique_ptr<T, D>& x, nullptr_t); 344template <class T, class D> 345 bool operator>=(nullptr_t, const unique_ptr<T, D>& y); 346 347class bad_weak_ptr 348 : public std::exception 349{ 350 bad_weak_ptr() noexcept; 351}; 352 353template<class T, class... Args> unique_ptr<T> make_unique(Args&&... args); // C++14 354template<class T> unique_ptr<T> make_unique(size_t n); // C++14 355template<class T, class... Args> unspecified make_unique(Args&&...) = delete; // C++14, T == U[N] 356 357template<class T> 358class shared_ptr 359{ 360public: 361 typedef T element_type; 362 363 // constructors: 364 constexpr shared_ptr() noexcept; 365 template<class Y> explicit shared_ptr(Y* p); 366 template<class Y, class D> shared_ptr(Y* p, D d); 367 template<class Y, class D, class A> shared_ptr(Y* p, D d, A a); 368 template <class D> shared_ptr(nullptr_t p, D d); 369 template <class D, class A> shared_ptr(nullptr_t p, D d, A a); 370 template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p) noexcept; 371 shared_ptr(const shared_ptr& r) noexcept; 372 template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept; 373 shared_ptr(shared_ptr&& r) noexcept; 374 template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept; 375 template<class Y> explicit shared_ptr(const weak_ptr<Y>& r); 376 template<class Y> shared_ptr(auto_ptr<Y>&& r); 377 template <class Y, class D> shared_ptr(unique_ptr<Y, D>&& r); 378 shared_ptr(nullptr_t) : shared_ptr() { } 379 380 // destructor: 381 ~shared_ptr(); 382 383 // assignment: 384 shared_ptr& operator=(const shared_ptr& r) noexcept; 385 template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept; 386 shared_ptr& operator=(shared_ptr&& r) noexcept; 387 template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r); 388 template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); 389 template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r); 390 391 // modifiers: 392 void swap(shared_ptr& r) noexcept; 393 void reset() noexcept; 394 template<class Y> void reset(Y* p); 395 template<class Y, class D> void reset(Y* p, D d); 396 template<class Y, class D, class A> void reset(Y* p, D d, A a); 397 398 // observers: 399 T* get() const noexcept; 400 T& operator*() const noexcept; 401 T* operator->() const noexcept; 402 long use_count() const noexcept; 403 bool unique() const noexcept; 404 explicit operator bool() const noexcept; 405 template<class U> bool owner_before(shared_ptr<U> const& b) const; 406 template<class U> bool owner_before(weak_ptr<U> const& b) const; 407}; 408 409// shared_ptr comparisons: 410template<class T, class U> 411 bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 412template<class T, class U> 413 bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 414template<class T, class U> 415 bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 416template<class T, class U> 417 bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 418template<class T, class U> 419 bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 420template<class T, class U> 421 bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 422 423template <class T> 424 bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept; 425template <class T> 426 bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept; 427template <class T> 428 bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept; 429template <class T> 430 bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept; 431template <class T> 432 bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept; 433template <class T> 434bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept; 435template <class T> 436 bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept; 437template <class T> 438 bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept; 439template <class T> 440 bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept; 441template <class T> 442 bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept; 443template <class T> 444 bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept; 445template <class T> 446 bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept; 447 448// shared_ptr specialized algorithms: 449template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept; 450 451// shared_ptr casts: 452template<class T, class U> 453 shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept; 454template<class T, class U> 455 shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept; 456template<class T, class U> 457 shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept; 458 459// shared_ptr I/O: 460template<class E, class T, class Y> 461 basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, shared_ptr<Y> const& p); 462 463// shared_ptr get_deleter: 464template<class D, class T> D* get_deleter(shared_ptr<T> const& p) noexcept; 465 466template<class T, class... Args> 467 shared_ptr<T> make_shared(Args&&... args); 468template<class T, class A, class... Args> 469 shared_ptr<T> allocate_shared(const A& a, Args&&... args); 470 471template<class T> 472class weak_ptr 473{ 474public: 475 typedef T element_type; 476 477 // constructors 478 constexpr weak_ptr() noexcept; 479 template<class Y> weak_ptr(shared_ptr<Y> const& r) noexcept; 480 weak_ptr(weak_ptr const& r) noexcept; 481 template<class Y> weak_ptr(weak_ptr<Y> const& r) noexcept; 482 weak_ptr(weak_ptr&& r) noexcept; // C++14 483 template<class Y> weak_ptr(weak_ptr<Y>&& r) noexcept; // C++14 484 485 // destructor 486 ~weak_ptr(); 487 488 // assignment 489 weak_ptr& operator=(weak_ptr const& r) noexcept; 490 template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r) noexcept; 491 template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r) noexcept; 492 weak_ptr& operator=(weak_ptr&& r) noexcept; // C++14 493 template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r) noexcept; // C++14 494 495 // modifiers 496 void swap(weak_ptr& r) noexcept; 497 void reset() noexcept; 498 499 // observers 500 long use_count() const noexcept; 501 bool expired() const noexcept; 502 shared_ptr<T> lock() const noexcept; 503 template<class U> bool owner_before(shared_ptr<U> const& b) const; 504 template<class U> bool owner_before(weak_ptr<U> const& b) const; 505}; 506 507// weak_ptr specialized algorithms: 508template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept; 509 510// class owner_less: 511template<class T> struct owner_less; 512 513template<class T> 514struct owner_less<shared_ptr<T>> 515 : binary_function<shared_ptr<T>, shared_ptr<T>, bool> 516{ 517 typedef bool result_type; 518 bool operator()(shared_ptr<T> const&, shared_ptr<T> const&) const; 519 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const; 520 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const; 521}; 522 523template<class T> 524struct owner_less<weak_ptr<T>> 525 : binary_function<weak_ptr<T>, weak_ptr<T>, bool> 526{ 527 typedef bool result_type; 528 bool operator()(weak_ptr<T> const&, weak_ptr<T> const&) const; 529 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const; 530 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const; 531}; 532 533template<class T> 534class enable_shared_from_this 535{ 536protected: 537 constexpr enable_shared_from_this() noexcept; 538 enable_shared_from_this(enable_shared_from_this const&) noexcept; 539 enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept; 540 ~enable_shared_from_this(); 541public: 542 shared_ptr<T> shared_from_this(); 543 shared_ptr<T const> shared_from_this() const; 544}; 545 546template<class T> 547 bool atomic_is_lock_free(const shared_ptr<T>* p); 548template<class T> 549 shared_ptr<T> atomic_load(const shared_ptr<T>* p); 550template<class T> 551 shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo); 552template<class T> 553 void atomic_store(shared_ptr<T>* p, shared_ptr<T> r); 554template<class T> 555 void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 556template<class T> 557 shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r); 558template<class T> 559 shared_ptr<T> 560 atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 561template<class T> 562 bool 563 atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 564template<class T> 565 bool 566 atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 567template<class T> 568 bool 569 atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 570 shared_ptr<T> w, memory_order success, 571 memory_order failure); 572template<class T> 573 bool 574 atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 575 shared_ptr<T> w, memory_order success, 576 memory_order failure); 577// Hash support 578template <class T> struct hash; 579template <class T, class D> struct hash<unique_ptr<T, D> >; 580template <class T> struct hash<shared_ptr<T> >; 581 582// Pointer safety 583enum class pointer_safety { relaxed, preferred, strict }; 584void declare_reachable(void *p); 585template <class T> T *undeclare_reachable(T *p); 586void declare_no_pointers(char *p, size_t n); 587void undeclare_no_pointers(char *p, size_t n); 588pointer_safety get_pointer_safety() noexcept; 589 590void* align(size_t alignment, size_t size, void*& ptr, size_t& space); 591 592} // std 593 594*/ 595 596#include <__config> 597#include <type_traits> 598#include <typeinfo> 599#include <cstddef> 600#include <cstdint> 601#include <new> 602#include <utility> 603#include <limits> 604#include <iterator> 605#include <__functional_base> 606#include <iosfwd> 607#include <tuple> 608#include <cstring> 609#if defined(_LIBCPP_NO_EXCEPTIONS) 610 #include <cassert> 611#endif 612 613#if __has_feature(cxx_atomic) && !defined(_LIBCPP_HAS_NO_THREADS) 614# include <atomic> 615#endif 616 617#include <__undef_min_max> 618 619#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 620#pragma GCC system_header 621#endif 622 623_LIBCPP_BEGIN_NAMESPACE_STD 624 625// addressof moved to <__functional_base> 626 627template <class _Tp> class allocator; 628 629template <> 630class _LIBCPP_TYPE_VIS_ONLY allocator<void> 631{ 632public: 633 typedef void* pointer; 634 typedef const void* const_pointer; 635 typedef void value_type; 636 637 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 638}; 639 640template <> 641class _LIBCPP_TYPE_VIS_ONLY allocator<const void> 642{ 643public: 644 typedef const void* pointer; 645 typedef const void* const_pointer; 646 typedef const void value_type; 647 648 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 649}; 650 651// pointer_traits 652 653template <class _Tp> 654struct __has_element_type 655{ 656private: 657 struct __two {char __lx; char __lxx;}; 658 template <class _Up> static __two __test(...); 659 template <class _Up> static char __test(typename _Up::element_type* = 0); 660public: 661 static const bool value = sizeof(__test<_Tp>(0)) == 1; 662}; 663 664template <class _Ptr, bool = __has_element_type<_Ptr>::value> 665struct __pointer_traits_element_type; 666 667template <class _Ptr> 668struct __pointer_traits_element_type<_Ptr, true> 669{ 670 typedef typename _Ptr::element_type type; 671}; 672 673#ifndef _LIBCPP_HAS_NO_VARIADICS 674 675template <template <class, class...> class _Sp, class _Tp, class ..._Args> 676struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true> 677{ 678 typedef typename _Sp<_Tp, _Args...>::element_type type; 679}; 680 681template <template <class, class...> class _Sp, class _Tp, class ..._Args> 682struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false> 683{ 684 typedef _Tp type; 685}; 686 687#else // _LIBCPP_HAS_NO_VARIADICS 688 689template <template <class> class _Sp, class _Tp> 690struct __pointer_traits_element_type<_Sp<_Tp>, true> 691{ 692 typedef typename _Sp<_Tp>::element_type type; 693}; 694 695template <template <class> class _Sp, class _Tp> 696struct __pointer_traits_element_type<_Sp<_Tp>, false> 697{ 698 typedef _Tp type; 699}; 700 701template <template <class, class> class _Sp, class _Tp, class _A0> 702struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true> 703{ 704 typedef typename _Sp<_Tp, _A0>::element_type type; 705}; 706 707template <template <class, class> class _Sp, class _Tp, class _A0> 708struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false> 709{ 710 typedef _Tp type; 711}; 712 713template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 714struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true> 715{ 716 typedef typename _Sp<_Tp, _A0, _A1>::element_type type; 717}; 718 719template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 720struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false> 721{ 722 typedef _Tp type; 723}; 724 725template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 726 class _A1, class _A2> 727struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true> 728{ 729 typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type; 730}; 731 732template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 733 class _A1, class _A2> 734struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false> 735{ 736 typedef _Tp type; 737}; 738 739#endif // _LIBCPP_HAS_NO_VARIADICS 740 741template <class _Tp> 742struct __has_difference_type 743{ 744private: 745 struct __two {char __lx; char __lxx;}; 746 template <class _Up> static __two __test(...); 747 template <class _Up> static char __test(typename _Up::difference_type* = 0); 748public: 749 static const bool value = sizeof(__test<_Tp>(0)) == 1; 750}; 751 752template <class _Ptr, bool = __has_difference_type<_Ptr>::value> 753struct __pointer_traits_difference_type 754{ 755 typedef ptrdiff_t type; 756}; 757 758template <class _Ptr> 759struct __pointer_traits_difference_type<_Ptr, true> 760{ 761 typedef typename _Ptr::difference_type type; 762}; 763 764template <class _Tp, class _Up> 765struct __has_rebind 766{ 767private: 768 struct __two {char __lx; char __lxx;}; 769 template <class _Xp> static __two __test(...); 770 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0); 771public: 772 static const bool value = sizeof(__test<_Tp>(0)) == 1; 773}; 774 775template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 776struct __pointer_traits_rebind 777{ 778#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 779 typedef typename _Tp::template rebind<_Up> type; 780#else 781 typedef typename _Tp::template rebind<_Up>::other type; 782#endif 783}; 784 785#ifndef _LIBCPP_HAS_NO_VARIADICS 786 787template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 788struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true> 789{ 790#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 791 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type; 792#else 793 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type; 794#endif 795}; 796 797template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 798struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false> 799{ 800 typedef _Sp<_Up, _Args...> type; 801}; 802 803#else // _LIBCPP_HAS_NO_VARIADICS 804 805template <template <class> class _Sp, class _Tp, class _Up> 806struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true> 807{ 808#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 809 typedef typename _Sp<_Tp>::template rebind<_Up> type; 810#else 811 typedef typename _Sp<_Tp>::template rebind<_Up>::other type; 812#endif 813}; 814 815template <template <class> class _Sp, class _Tp, class _Up> 816struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false> 817{ 818 typedef _Sp<_Up> type; 819}; 820 821template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 822struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true> 823{ 824#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 825 typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type; 826#else 827 typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type; 828#endif 829}; 830 831template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 832struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false> 833{ 834 typedef _Sp<_Up, _A0> type; 835}; 836 837template <template <class, class, class> class _Sp, class _Tp, class _A0, 838 class _A1, class _Up> 839struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true> 840{ 841#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 842 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type; 843#else 844 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type; 845#endif 846}; 847 848template <template <class, class, class> class _Sp, class _Tp, class _A0, 849 class _A1, class _Up> 850struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false> 851{ 852 typedef _Sp<_Up, _A0, _A1> type; 853}; 854 855template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 856 class _A1, class _A2, class _Up> 857struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true> 858{ 859#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 860 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type; 861#else 862 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 863#endif 864}; 865 866template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 867 class _A1, class _A2, class _Up> 868struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false> 869{ 870 typedef _Sp<_Up, _A0, _A1, _A2> type; 871}; 872 873#endif // _LIBCPP_HAS_NO_VARIADICS 874 875template <class _Ptr> 876struct _LIBCPP_TYPE_VIS_ONLY pointer_traits 877{ 878 typedef _Ptr pointer; 879 typedef typename __pointer_traits_element_type<pointer>::type element_type; 880 typedef typename __pointer_traits_difference_type<pointer>::type difference_type; 881 882#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 883 template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type; 884#else 885 template <class _Up> struct rebind 886 {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;}; 887#endif // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 888 889private: 890 struct __nat {}; 891public: 892 _LIBCPP_INLINE_VISIBILITY 893 static pointer pointer_to(typename conditional<is_void<element_type>::value, 894 __nat, element_type>::type& __r) 895 {return pointer::pointer_to(__r);} 896}; 897 898template <class _Tp> 899struct _LIBCPP_TYPE_VIS_ONLY pointer_traits<_Tp*> 900{ 901 typedef _Tp* pointer; 902 typedef _Tp element_type; 903 typedef ptrdiff_t difference_type; 904 905#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 906 template <class _Up> using rebind = _Up*; 907#else 908 template <class _Up> struct rebind {typedef _Up* other;}; 909#endif 910 911private: 912 struct __nat {}; 913public: 914 _LIBCPP_INLINE_VISIBILITY 915 static pointer pointer_to(typename conditional<is_void<element_type>::value, 916 __nat, element_type>::type& __r) _NOEXCEPT 917 {return _VSTD::addressof(__r);} 918}; 919 920// allocator_traits 921 922namespace __has_pointer_type_imp 923{ 924 template <class _Up> static __two __test(...); 925 template <class _Up> static char __test(typename _Up::pointer* = 0); 926} 927 928template <class _Tp> 929struct __has_pointer_type 930 : public integral_constant<bool, sizeof(__has_pointer_type_imp::__test<_Tp>(0)) == 1> 931{ 932}; 933 934namespace __pointer_type_imp 935{ 936 937template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value> 938struct __pointer_type 939{ 940 typedef typename _Dp::pointer type; 941}; 942 943template <class _Tp, class _Dp> 944struct __pointer_type<_Tp, _Dp, false> 945{ 946 typedef _Tp* type; 947}; 948 949} // __pointer_type_imp 950 951template <class _Tp, class _Dp> 952struct __pointer_type 953{ 954 typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type; 955}; 956 957template <class _Tp> 958struct __has_const_pointer 959{ 960private: 961 struct __two {char __lx; char __lxx;}; 962 template <class _Up> static __two __test(...); 963 template <class _Up> static char __test(typename _Up::const_pointer* = 0); 964public: 965 static const bool value = sizeof(__test<_Tp>(0)) == 1; 966}; 967 968template <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value> 969struct __const_pointer 970{ 971 typedef typename _Alloc::const_pointer type; 972}; 973 974template <class _Tp, class _Ptr, class _Alloc> 975struct __const_pointer<_Tp, _Ptr, _Alloc, false> 976{ 977#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 978 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp> type; 979#else 980 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type; 981#endif 982}; 983 984template <class _Tp> 985struct __has_void_pointer 986{ 987private: 988 struct __two {char __lx; char __lxx;}; 989 template <class _Up> static __two __test(...); 990 template <class _Up> static char __test(typename _Up::void_pointer* = 0); 991public: 992 static const bool value = sizeof(__test<_Tp>(0)) == 1; 993}; 994 995template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value> 996struct __void_pointer 997{ 998 typedef typename _Alloc::void_pointer type; 999}; 1000 1001template <class _Ptr, class _Alloc> 1002struct __void_pointer<_Ptr, _Alloc, false> 1003{ 1004#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1005 typedef typename pointer_traits<_Ptr>::template rebind<void> type; 1006#else 1007 typedef typename pointer_traits<_Ptr>::template rebind<void>::other type; 1008#endif 1009}; 1010 1011template <class _Tp> 1012struct __has_const_void_pointer 1013{ 1014private: 1015 struct __two {char __lx; char __lxx;}; 1016 template <class _Up> static __two __test(...); 1017 template <class _Up> static char __test(typename _Up::const_void_pointer* = 0); 1018public: 1019 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1020}; 1021 1022template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value> 1023struct __const_void_pointer 1024{ 1025 typedef typename _Alloc::const_void_pointer type; 1026}; 1027 1028template <class _Ptr, class _Alloc> 1029struct __const_void_pointer<_Ptr, _Alloc, false> 1030{ 1031#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1032 typedef typename pointer_traits<_Ptr>::template rebind<const void> type; 1033#else 1034 typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type; 1035#endif 1036}; 1037 1038template <class _Tp> 1039inline _LIBCPP_INLINE_VISIBILITY 1040_Tp* 1041__to_raw_pointer(_Tp* __p) _NOEXCEPT 1042{ 1043 return __p; 1044} 1045 1046template <class _Pointer> 1047inline _LIBCPP_INLINE_VISIBILITY 1048typename pointer_traits<_Pointer>::element_type* 1049__to_raw_pointer(_Pointer __p) _NOEXCEPT 1050{ 1051 return _VSTD::__to_raw_pointer(__p.operator->()); 1052} 1053 1054template <class _Tp> 1055struct __has_size_type 1056{ 1057private: 1058 struct __two {char __lx; char __lxx;}; 1059 template <class _Up> static __two __test(...); 1060 template <class _Up> static char __test(typename _Up::size_type* = 0); 1061public: 1062 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1063}; 1064 1065template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value> 1066struct __size_type 1067{ 1068 typedef typename make_unsigned<_DiffType>::type type; 1069}; 1070 1071template <class _Alloc, class _DiffType> 1072struct __size_type<_Alloc, _DiffType, true> 1073{ 1074 typedef typename _Alloc::size_type type; 1075}; 1076 1077template <class _Tp> 1078struct __has_propagate_on_container_copy_assignment 1079{ 1080private: 1081 struct __two {char __lx; char __lxx;}; 1082 template <class _Up> static __two __test(...); 1083 template <class _Up> static char __test(typename _Up::propagate_on_container_copy_assignment* = 0); 1084public: 1085 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1086}; 1087 1088template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value> 1089struct __propagate_on_container_copy_assignment 1090{ 1091 typedef false_type type; 1092}; 1093 1094template <class _Alloc> 1095struct __propagate_on_container_copy_assignment<_Alloc, true> 1096{ 1097 typedef typename _Alloc::propagate_on_container_copy_assignment type; 1098}; 1099 1100template <class _Tp> 1101struct __has_propagate_on_container_move_assignment 1102{ 1103private: 1104 struct __two {char __lx; char __lxx;}; 1105 template <class _Up> static __two __test(...); 1106 template <class _Up> static char __test(typename _Up::propagate_on_container_move_assignment* = 0); 1107public: 1108 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1109}; 1110 1111template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value> 1112struct __propagate_on_container_move_assignment 1113{ 1114 typedef false_type type; 1115}; 1116 1117template <class _Alloc> 1118struct __propagate_on_container_move_assignment<_Alloc, true> 1119{ 1120 typedef typename _Alloc::propagate_on_container_move_assignment type; 1121}; 1122 1123template <class _Tp> 1124struct __has_propagate_on_container_swap 1125{ 1126private: 1127 struct __two {char __lx; char __lxx;}; 1128 template <class _Up> static __two __test(...); 1129 template <class _Up> static char __test(typename _Up::propagate_on_container_swap* = 0); 1130public: 1131 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1132}; 1133 1134template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value> 1135struct __propagate_on_container_swap 1136{ 1137 typedef false_type type; 1138}; 1139 1140template <class _Alloc> 1141struct __propagate_on_container_swap<_Alloc, true> 1142{ 1143 typedef typename _Alloc::propagate_on_container_swap type; 1144}; 1145 1146template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 1147struct __has_rebind_other 1148{ 1149private: 1150 struct __two {char __lx; char __lxx;}; 1151 template <class _Xp> static __two __test(...); 1152 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0); 1153public: 1154 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1155}; 1156 1157template <class _Tp, class _Up> 1158struct __has_rebind_other<_Tp, _Up, false> 1159{ 1160 static const bool value = false; 1161}; 1162 1163template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value> 1164struct __allocator_traits_rebind 1165{ 1166 typedef typename _Tp::template rebind<_Up>::other type; 1167}; 1168 1169#ifndef _LIBCPP_HAS_NO_VARIADICS 1170 1171template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1172struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true> 1173{ 1174 typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type; 1175}; 1176 1177template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1178struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false> 1179{ 1180 typedef _Alloc<_Up, _Args...> type; 1181}; 1182 1183#else // _LIBCPP_HAS_NO_VARIADICS 1184 1185template <template <class> class _Alloc, class _Tp, class _Up> 1186struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true> 1187{ 1188 typedef typename _Alloc<_Tp>::template rebind<_Up>::other type; 1189}; 1190 1191template <template <class> class _Alloc, class _Tp, class _Up> 1192struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false> 1193{ 1194 typedef _Alloc<_Up> type; 1195}; 1196 1197template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1198struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true> 1199{ 1200 typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type; 1201}; 1202 1203template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1204struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false> 1205{ 1206 typedef _Alloc<_Up, _A0> type; 1207}; 1208 1209template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1210 class _A1, class _Up> 1211struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true> 1212{ 1213 typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type; 1214}; 1215 1216template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1217 class _A1, class _Up> 1218struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false> 1219{ 1220 typedef _Alloc<_Up, _A0, _A1> type; 1221}; 1222 1223template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1224 class _A1, class _A2, class _Up> 1225struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true> 1226{ 1227 typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 1228}; 1229 1230template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1231 class _A1, class _A2, class _Up> 1232struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false> 1233{ 1234 typedef _Alloc<_Up, _A0, _A1, _A2> type; 1235}; 1236 1237#endif // _LIBCPP_HAS_NO_VARIADICS 1238 1239#ifndef _LIBCPP_HAS_NO_ADVANCED_SFINAE 1240 1241template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1242auto 1243__has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1244 -> decltype(__a.allocate(__sz, __p), true_type()); 1245 1246template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1247auto 1248__has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1249 -> false_type; 1250 1251template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1252struct __has_allocate_hint 1253 : integral_constant<bool, 1254 is_same< 1255 decltype(__has_allocate_hint_test(declval<_Alloc>(), 1256 declval<_SizeType>(), 1257 declval<_ConstVoidPtr>())), 1258 true_type>::value> 1259{ 1260}; 1261 1262#else // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1263 1264template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1265struct __has_allocate_hint 1266 : true_type 1267{ 1268}; 1269 1270#endif // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1271 1272#if !defined(_LIBCPP_HAS_NO_ADVANCED_SFINAE) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1273 1274template <class _Alloc, class _Tp, class ..._Args> 1275decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(), 1276 _VSTD::declval<_Args>()...), 1277 true_type()) 1278__has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args); 1279 1280template <class _Alloc, class _Pointer, class ..._Args> 1281false_type 1282__has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args); 1283 1284template <class _Alloc, class _Pointer, class ..._Args> 1285struct __has_construct 1286 : integral_constant<bool, 1287 is_same< 1288 decltype(__has_construct_test(declval<_Alloc>(), 1289 declval<_Pointer>(), 1290 declval<_Args>()...)), 1291 true_type>::value> 1292{ 1293}; 1294 1295template <class _Alloc, class _Pointer> 1296auto 1297__has_destroy_test(_Alloc&& __a, _Pointer&& __p) 1298 -> decltype(__a.destroy(__p), true_type()); 1299 1300template <class _Alloc, class _Pointer> 1301auto 1302__has_destroy_test(const _Alloc& __a, _Pointer&& __p) 1303 -> false_type; 1304 1305template <class _Alloc, class _Pointer> 1306struct __has_destroy 1307 : integral_constant<bool, 1308 is_same< 1309 decltype(__has_destroy_test(declval<_Alloc>(), 1310 declval<_Pointer>())), 1311 true_type>::value> 1312{ 1313}; 1314 1315template <class _Alloc> 1316auto 1317__has_max_size_test(_Alloc&& __a) 1318 -> decltype(__a.max_size(), true_type()); 1319 1320template <class _Alloc> 1321auto 1322__has_max_size_test(const volatile _Alloc& __a) 1323 -> false_type; 1324 1325template <class _Alloc> 1326struct __has_max_size 1327 : integral_constant<bool, 1328 is_same< 1329 decltype(__has_max_size_test(declval<_Alloc&>())), 1330 true_type>::value> 1331{ 1332}; 1333 1334template <class _Alloc> 1335auto 1336__has_select_on_container_copy_construction_test(_Alloc&& __a) 1337 -> decltype(__a.select_on_container_copy_construction(), true_type()); 1338 1339template <class _Alloc> 1340auto 1341__has_select_on_container_copy_construction_test(const volatile _Alloc& __a) 1342 -> false_type; 1343 1344template <class _Alloc> 1345struct __has_select_on_container_copy_construction 1346 : integral_constant<bool, 1347 is_same< 1348 decltype(__has_select_on_container_copy_construction_test(declval<_Alloc&>())), 1349 true_type>::value> 1350{ 1351}; 1352 1353#else // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1354 1355#ifndef _LIBCPP_HAS_NO_VARIADICS 1356 1357template <class _Alloc, class _Pointer, class ..._Args> 1358struct __has_construct 1359 : false_type 1360{ 1361}; 1362 1363#else // _LIBCPP_HAS_NO_VARIADICS 1364 1365template <class _Alloc, class _Pointer, class _Args> 1366struct __has_construct 1367 : false_type 1368{ 1369}; 1370 1371#endif // _LIBCPP_HAS_NO_VARIADICS 1372 1373template <class _Alloc, class _Pointer> 1374struct __has_destroy 1375 : false_type 1376{ 1377}; 1378 1379template <class _Alloc> 1380struct __has_max_size 1381 : true_type 1382{ 1383}; 1384 1385template <class _Alloc> 1386struct __has_select_on_container_copy_construction 1387 : false_type 1388{ 1389}; 1390 1391#endif // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1392 1393template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value> 1394struct __alloc_traits_difference_type 1395{ 1396 typedef typename pointer_traits<_Ptr>::difference_type type; 1397}; 1398 1399template <class _Alloc, class _Ptr> 1400struct __alloc_traits_difference_type<_Alloc, _Ptr, true> 1401{ 1402 typedef typename _Alloc::difference_type type; 1403}; 1404 1405template <class _Alloc> 1406struct _LIBCPP_TYPE_VIS_ONLY allocator_traits 1407{ 1408 typedef _Alloc allocator_type; 1409 typedef typename allocator_type::value_type value_type; 1410 1411 typedef typename __pointer_type<value_type, allocator_type>::type pointer; 1412 typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer; 1413 typedef typename __void_pointer<pointer, allocator_type>::type void_pointer; 1414 typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer; 1415 1416 typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type; 1417 typedef typename __size_type<allocator_type, difference_type>::type size_type; 1418 1419 typedef typename __propagate_on_container_copy_assignment<allocator_type>::type 1420 propagate_on_container_copy_assignment; 1421 typedef typename __propagate_on_container_move_assignment<allocator_type>::type 1422 propagate_on_container_move_assignment; 1423 typedef typename __propagate_on_container_swap<allocator_type>::type 1424 propagate_on_container_swap; 1425 1426#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1427 template <class _Tp> using rebind_alloc = 1428 typename __allocator_traits_rebind<allocator_type, _Tp>::type; 1429 template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>; 1430#else // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1431 template <class _Tp> struct rebind_alloc 1432 {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;}; 1433 template <class _Tp> struct rebind_traits 1434 {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;}; 1435#endif // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1436 1437 _LIBCPP_INLINE_VISIBILITY 1438 static pointer allocate(allocator_type& __a, size_type __n) 1439 {return __a.allocate(__n);} 1440 _LIBCPP_INLINE_VISIBILITY 1441 static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint) 1442 {return allocate(__a, __n, __hint, 1443 __has_allocate_hint<allocator_type, size_type, const_void_pointer>());} 1444 1445 _LIBCPP_INLINE_VISIBILITY 1446 static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT 1447 {__a.deallocate(__p, __n);} 1448 1449#ifndef _LIBCPP_HAS_NO_VARIADICS 1450 template <class _Tp, class... _Args> 1451 _LIBCPP_INLINE_VISIBILITY 1452 static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args) 1453 {__construct(__has_construct<allocator_type, _Tp*, _Args...>(), 1454 __a, __p, _VSTD::forward<_Args>(__args)...);} 1455#else // _LIBCPP_HAS_NO_VARIADICS 1456 template <class _Tp> 1457 _LIBCPP_INLINE_VISIBILITY 1458 static void construct(allocator_type& __a, _Tp* __p) 1459 { 1460 ::new ((void*)__p) _Tp(); 1461 } 1462 template <class _Tp, class _A0> 1463 _LIBCPP_INLINE_VISIBILITY 1464 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0) 1465 { 1466 ::new ((void*)__p) _Tp(__a0); 1467 } 1468 template <class _Tp, class _A0, class _A1> 1469 _LIBCPP_INLINE_VISIBILITY 1470 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0, 1471 const _A1& __a1) 1472 { 1473 ::new ((void*)__p) _Tp(__a0, __a1); 1474 } 1475 template <class _Tp, class _A0, class _A1, class _A2> 1476 _LIBCPP_INLINE_VISIBILITY 1477 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0, 1478 const _A1& __a1, const _A2& __a2) 1479 { 1480 ::new ((void*)__p) _Tp(__a0, __a1, __a2); 1481 } 1482#endif // _LIBCPP_HAS_NO_VARIADICS 1483 1484 template <class _Tp> 1485 _LIBCPP_INLINE_VISIBILITY 1486 static void destroy(allocator_type& __a, _Tp* __p) 1487 {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);} 1488 1489 _LIBCPP_INLINE_VISIBILITY 1490 static size_type max_size(const allocator_type& __a) _NOEXCEPT 1491 {return __max_size(__has_max_size<const allocator_type>(), __a);} 1492 1493 _LIBCPP_INLINE_VISIBILITY 1494 static allocator_type 1495 select_on_container_copy_construction(const allocator_type& __a) 1496 {return select_on_container_copy_construction( 1497 __has_select_on_container_copy_construction<const allocator_type>(), 1498 __a);} 1499 1500 template <class _Ptr> 1501 _LIBCPP_INLINE_VISIBILITY 1502 static 1503 void 1504 __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) 1505 { 1506 for (; __begin1 != __end1; ++__begin1, ++__begin2) 1507 construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1)); 1508 } 1509 1510 template <class _Tp> 1511 _LIBCPP_INLINE_VISIBILITY 1512 static 1513 typename enable_if 1514 < 1515 (is_same<allocator_type, allocator<_Tp> >::value 1516 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1517 is_trivially_move_constructible<_Tp>::value, 1518 void 1519 >::type 1520 __construct_forward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1521 { 1522 ptrdiff_t _Np = __end1 - __begin1; 1523 _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp)); 1524 __begin2 += _Np; 1525 } 1526 1527 template <class _Ptr> 1528 _LIBCPP_INLINE_VISIBILITY 1529 static 1530 void 1531 __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2) 1532 { 1533 while (__end1 != __begin1) 1534 { 1535 construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1)); 1536 --__end2; 1537 } 1538 } 1539 1540 template <class _Tp> 1541 _LIBCPP_INLINE_VISIBILITY 1542 static 1543 typename enable_if 1544 < 1545 (is_same<allocator_type, allocator<_Tp> >::value 1546 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1547 is_trivially_move_constructible<_Tp>::value, 1548 void 1549 >::type 1550 __construct_backward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __end2) 1551 { 1552 ptrdiff_t _Np = __end1 - __begin1; 1553 __end2 -= _Np; 1554 _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp)); 1555 } 1556 1557private: 1558 1559 _LIBCPP_INLINE_VISIBILITY 1560 static pointer allocate(allocator_type& __a, size_type __n, 1561 const_void_pointer __hint, true_type) 1562 {return __a.allocate(__n, __hint);} 1563 _LIBCPP_INLINE_VISIBILITY 1564 static pointer allocate(allocator_type& __a, size_type __n, 1565 const_void_pointer, false_type) 1566 {return __a.allocate(__n);} 1567 1568#ifndef _LIBCPP_HAS_NO_VARIADICS 1569 template <class _Tp, class... _Args> 1570 _LIBCPP_INLINE_VISIBILITY 1571 static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args) 1572 {__a.construct(__p, _VSTD::forward<_Args>(__args)...);} 1573 template <class _Tp, class... _Args> 1574 _LIBCPP_INLINE_VISIBILITY 1575 static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args) 1576 { 1577 ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...); 1578 } 1579#endif // _LIBCPP_HAS_NO_VARIADICS 1580 1581 template <class _Tp> 1582 _LIBCPP_INLINE_VISIBILITY 1583 static void __destroy(true_type, allocator_type& __a, _Tp* __p) 1584 {__a.destroy(__p);} 1585 template <class _Tp> 1586 _LIBCPP_INLINE_VISIBILITY 1587 static void __destroy(false_type, allocator_type&, _Tp* __p) 1588 { 1589 __p->~_Tp(); 1590 } 1591 1592 _LIBCPP_INLINE_VISIBILITY 1593 static size_type __max_size(true_type, const allocator_type& __a) 1594 {return __a.max_size();} 1595 _LIBCPP_INLINE_VISIBILITY 1596 static size_type __max_size(false_type, const allocator_type&) 1597 {return numeric_limits<size_type>::max();} 1598 1599 _LIBCPP_INLINE_VISIBILITY 1600 static allocator_type 1601 select_on_container_copy_construction(true_type, const allocator_type& __a) 1602 {return __a.select_on_container_copy_construction();} 1603 _LIBCPP_INLINE_VISIBILITY 1604 static allocator_type 1605 select_on_container_copy_construction(false_type, const allocator_type& __a) 1606 {return __a;} 1607}; 1608 1609// allocator 1610 1611template <class _Tp> 1612class _LIBCPP_TYPE_VIS_ONLY allocator 1613{ 1614public: 1615 typedef size_t size_type; 1616 typedef ptrdiff_t difference_type; 1617 typedef _Tp* pointer; 1618 typedef const _Tp* const_pointer; 1619 typedef _Tp& reference; 1620 typedef const _Tp& const_reference; 1621 typedef _Tp value_type; 1622 1623 typedef true_type propagate_on_container_move_assignment; 1624 1625 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1626 1627 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1628 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1629 _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT 1630 {return _VSTD::addressof(__x);} 1631 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1632 {return _VSTD::addressof(__x);} 1633 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1634 {return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp)));} 1635 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1636 {_VSTD::__deallocate((void*)__p);} 1637 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1638 {return size_type(~0) / sizeof(_Tp);} 1639#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1640 template <class _Up, class... _Args> 1641 _LIBCPP_INLINE_VISIBILITY 1642 void 1643 construct(_Up* __p, _Args&&... __args) 1644 { 1645 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1646 } 1647#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1648 _LIBCPP_INLINE_VISIBILITY 1649 void 1650 construct(pointer __p) 1651 { 1652 ::new((void*)__p) _Tp(); 1653 } 1654# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1655 1656 template <class _A0> 1657 _LIBCPP_INLINE_VISIBILITY 1658 void 1659 construct(pointer __p, _A0& __a0) 1660 { 1661 ::new((void*)__p) _Tp(__a0); 1662 } 1663 template <class _A0> 1664 _LIBCPP_INLINE_VISIBILITY 1665 void 1666 construct(pointer __p, const _A0& __a0) 1667 { 1668 ::new((void*)__p) _Tp(__a0); 1669 } 1670# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1671 template <class _A0, class _A1> 1672 _LIBCPP_INLINE_VISIBILITY 1673 void 1674 construct(pointer __p, _A0& __a0, _A1& __a1) 1675 { 1676 ::new((void*)__p) _Tp(__a0, __a1); 1677 } 1678 template <class _A0, class _A1> 1679 _LIBCPP_INLINE_VISIBILITY 1680 void 1681 construct(pointer __p, const _A0& __a0, _A1& __a1) 1682 { 1683 ::new((void*)__p) _Tp(__a0, __a1); 1684 } 1685 template <class _A0, class _A1> 1686 _LIBCPP_INLINE_VISIBILITY 1687 void 1688 construct(pointer __p, _A0& __a0, const _A1& __a1) 1689 { 1690 ::new((void*)__p) _Tp(__a0, __a1); 1691 } 1692 template <class _A0, class _A1> 1693 _LIBCPP_INLINE_VISIBILITY 1694 void 1695 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1696 { 1697 ::new((void*)__p) _Tp(__a0, __a1); 1698 } 1699#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1700 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1701}; 1702 1703template <class _Tp> 1704class _LIBCPP_TYPE_VIS_ONLY allocator<const _Tp> 1705{ 1706public: 1707 typedef size_t size_type; 1708 typedef ptrdiff_t difference_type; 1709 typedef const _Tp* pointer; 1710 typedef const _Tp* const_pointer; 1711 typedef const _Tp& reference; 1712 typedef const _Tp& const_reference; 1713 typedef const _Tp value_type; 1714 1715 typedef true_type propagate_on_container_move_assignment; 1716 1717 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1718 1719 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1720 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1721 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1722 {return _VSTD::addressof(__x);} 1723 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1724 {return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp)));} 1725 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1726 {_VSTD::__deallocate((void*)__p);} 1727 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1728 {return size_type(~0) / sizeof(_Tp);} 1729#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1730 template <class _Up, class... _Args> 1731 _LIBCPP_INLINE_VISIBILITY 1732 void 1733 construct(_Up* __p, _Args&&... __args) 1734 { 1735 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1736 } 1737#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1738 _LIBCPP_INLINE_VISIBILITY 1739 void 1740 construct(pointer __p) 1741 { 1742 ::new((void*)__p) _Tp(); 1743 } 1744# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1745 1746 template <class _A0> 1747 _LIBCPP_INLINE_VISIBILITY 1748 void 1749 construct(pointer __p, _A0& __a0) 1750 { 1751 ::new((void*)__p) _Tp(__a0); 1752 } 1753 template <class _A0> 1754 _LIBCPP_INLINE_VISIBILITY 1755 void 1756 construct(pointer __p, const _A0& __a0) 1757 { 1758 ::new((void*)__p) _Tp(__a0); 1759 } 1760# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1761 template <class _A0, class _A1> 1762 _LIBCPP_INLINE_VISIBILITY 1763 void 1764 construct(pointer __p, _A0& __a0, _A1& __a1) 1765 { 1766 ::new((void*)__p) _Tp(__a0, __a1); 1767 } 1768 template <class _A0, class _A1> 1769 _LIBCPP_INLINE_VISIBILITY 1770 void 1771 construct(pointer __p, const _A0& __a0, _A1& __a1) 1772 { 1773 ::new((void*)__p) _Tp(__a0, __a1); 1774 } 1775 template <class _A0, class _A1> 1776 _LIBCPP_INLINE_VISIBILITY 1777 void 1778 construct(pointer __p, _A0& __a0, const _A1& __a1) 1779 { 1780 ::new((void*)__p) _Tp(__a0, __a1); 1781 } 1782 template <class _A0, class _A1> 1783 _LIBCPP_INLINE_VISIBILITY 1784 void 1785 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1786 { 1787 ::new((void*)__p) _Tp(__a0, __a1); 1788 } 1789#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1790 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1791}; 1792 1793template <class _Tp, class _Up> 1794inline _LIBCPP_INLINE_VISIBILITY 1795bool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;} 1796 1797template <class _Tp, class _Up> 1798inline _LIBCPP_INLINE_VISIBILITY 1799bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;} 1800 1801template <class _OutputIterator, class _Tp> 1802class _LIBCPP_TYPE_VIS_ONLY raw_storage_iterator 1803 : public iterator<output_iterator_tag, 1804 _Tp, // purposefully not C++03 1805 ptrdiff_t, // purposefully not C++03 1806 _Tp*, // purposefully not C++03 1807 raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03 1808{ 1809private: 1810 _OutputIterator __x_; 1811public: 1812 _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} 1813 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;} 1814 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element) 1815 {::new(&*__x_) _Tp(__element); return *this;} 1816 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;} 1817 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int) 1818 {raw_storage_iterator __t(*this); ++__x_; return __t;} 1819}; 1820 1821template <class _Tp> 1822pair<_Tp*, ptrdiff_t> 1823get_temporary_buffer(ptrdiff_t __n) _NOEXCEPT 1824{ 1825 pair<_Tp*, ptrdiff_t> __r(0, 0); 1826 const ptrdiff_t __m = (~ptrdiff_t(0) ^ 1827 ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1))) 1828 / sizeof(_Tp); 1829 if (__n > __m) 1830 __n = __m; 1831 while (__n > 0) 1832 { 1833 __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow)); 1834 if (__r.first) 1835 { 1836 __r.second = __n; 1837 break; 1838 } 1839 __n /= 2; 1840 } 1841 return __r; 1842} 1843 1844template <class _Tp> 1845inline _LIBCPP_INLINE_VISIBILITY 1846void return_temporary_buffer(_Tp* __p) _NOEXCEPT {::operator delete(__p);} 1847 1848template <class _Tp> 1849struct auto_ptr_ref 1850{ 1851 _Tp* __ptr_; 1852}; 1853 1854template<class _Tp> 1855class _LIBCPP_TYPE_VIS_ONLY auto_ptr 1856{ 1857private: 1858 _Tp* __ptr_; 1859public: 1860 typedef _Tp element_type; 1861 1862 _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {} 1863 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {} 1864 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw() 1865 : __ptr_(__p.release()) {} 1866 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw() 1867 {reset(__p.release()); return *this;} 1868 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw() 1869 {reset(__p.release()); return *this;} 1870 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw() 1871 {reset(__p.__ptr_); return *this;} 1872 _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;} 1873 1874 _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw() 1875 {return *__ptr_;} 1876 _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;} 1877 _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;} 1878 _LIBCPP_INLINE_VISIBILITY _Tp* release() throw() 1879 { 1880 _Tp* __t = __ptr_; 1881 __ptr_ = 0; 1882 return __t; 1883 } 1884 _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw() 1885 { 1886 if (__ptr_ != __p) 1887 delete __ptr_; 1888 __ptr_ = __p; 1889 } 1890 1891 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {} 1892 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw() 1893 {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;} 1894 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw() 1895 {return auto_ptr<_Up>(release());} 1896}; 1897 1898template <> 1899class _LIBCPP_TYPE_VIS_ONLY auto_ptr<void> 1900{ 1901public: 1902 typedef void element_type; 1903}; 1904 1905template <class _T1, class _T2, bool = is_same<typename remove_cv<_T1>::type, 1906 typename remove_cv<_T2>::type>::value, 1907 bool = is_empty<_T1>::value 1908#if __has_feature(is_final) 1909 && !__is_final(_T1) 1910#endif 1911 , 1912 bool = is_empty<_T2>::value 1913#if __has_feature(is_final) 1914 && !__is_final(_T2) 1915#endif 1916 > 1917struct __libcpp_compressed_pair_switch; 1918 1919template <class _T1, class _T2, bool IsSame> 1920struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, false> {enum {value = 0};}; 1921 1922template <class _T1, class _T2, bool IsSame> 1923struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, true, false> {enum {value = 1};}; 1924 1925template <class _T1, class _T2, bool IsSame> 1926struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, true> {enum {value = 2};}; 1927 1928template <class _T1, class _T2> 1929struct __libcpp_compressed_pair_switch<_T1, _T2, false, true, true> {enum {value = 3};}; 1930 1931template <class _T1, class _T2> 1932struct __libcpp_compressed_pair_switch<_T1, _T2, true, true, true> {enum {value = 1};}; 1933 1934template <class _T1, class _T2, unsigned = __libcpp_compressed_pair_switch<_T1, _T2>::value> 1935class __libcpp_compressed_pair_imp; 1936 1937template <class _T1, class _T2> 1938class __libcpp_compressed_pair_imp<_T1, _T2, 0> 1939{ 1940private: 1941 _T1 __first_; 1942 _T2 __second_; 1943public: 1944 typedef _T1 _T1_param; 1945 typedef _T2 _T2_param; 1946 1947 typedef typename remove_reference<_T1>::type& _T1_reference; 1948 typedef typename remove_reference<_T2>::type& _T2_reference; 1949 1950 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 1951 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 1952 1953 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 1954 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 1955 : __first_(_VSTD::forward<_T1_param>(__t1)) {} 1956 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 1957 : __second_(_VSTD::forward<_T2_param>(__t2)) {} 1958 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 1959 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 1960 1961#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1962 1963 _LIBCPP_INLINE_VISIBILITY 1964 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 1965 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 1966 is_nothrow_copy_constructible<_T2>::value) 1967 : __first_(__p.first()), 1968 __second_(__p.second()) {} 1969 1970 _LIBCPP_INLINE_VISIBILITY 1971 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 1972 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 1973 is_nothrow_copy_assignable<_T2>::value) 1974 { 1975 __first_ = __p.first(); 1976 __second_ = __p.second(); 1977 return *this; 1978 } 1979 1980 _LIBCPP_INLINE_VISIBILITY 1981 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 1982 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 1983 is_nothrow_move_constructible<_T2>::value) 1984 : __first_(_VSTD::forward<_T1>(__p.first())), 1985 __second_(_VSTD::forward<_T2>(__p.second())) {} 1986 1987 _LIBCPP_INLINE_VISIBILITY 1988 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 1989 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 1990 is_nothrow_move_assignable<_T2>::value) 1991 { 1992 __first_ = _VSTD::forward<_T1>(__p.first()); 1993 __second_ = _VSTD::forward<_T2>(__p.second()); 1994 return *this; 1995 } 1996 1997#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1998 1999#ifndef _LIBCPP_HAS_NO_VARIADICS 2000 2001 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2002 _LIBCPP_INLINE_VISIBILITY 2003 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2004 tuple<_Args1...> __first_args, 2005 tuple<_Args2...> __second_args, 2006 __tuple_indices<_I1...>, 2007 __tuple_indices<_I2...>) 2008 : __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2009 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2010 {} 2011 2012#endif // _LIBCPP_HAS_NO_VARIADICS 2013 2014 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2015 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2016 2017 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2018 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2019 2020 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2021 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2022 __is_nothrow_swappable<_T2>::value) 2023 { 2024 using _VSTD::swap; 2025 swap(__first_, __x.__first_); 2026 swap(__second_, __x.__second_); 2027 } 2028}; 2029 2030template <class _T1, class _T2> 2031class __libcpp_compressed_pair_imp<_T1, _T2, 1> 2032 : private _T1 2033{ 2034private: 2035 _T2 __second_; 2036public: 2037 typedef _T1 _T1_param; 2038 typedef _T2 _T2_param; 2039 2040 typedef _T1& _T1_reference; 2041 typedef typename remove_reference<_T2>::type& _T2_reference; 2042 2043 typedef const _T1& _T1_const_reference; 2044 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 2045 2046 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2047 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2048 : _T1(_VSTD::forward<_T1_param>(__t1)) {} 2049 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2050 : __second_(_VSTD::forward<_T2_param>(__t2)) {} 2051 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2052 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2053 2054#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2055 2056 _LIBCPP_INLINE_VISIBILITY 2057 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2058 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2059 is_nothrow_copy_constructible<_T2>::value) 2060 : _T1(__p.first()), __second_(__p.second()) {} 2061 2062 _LIBCPP_INLINE_VISIBILITY 2063 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2064 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2065 is_nothrow_copy_assignable<_T2>::value) 2066 { 2067 _T1::operator=(__p.first()); 2068 __second_ = __p.second(); 2069 return *this; 2070 } 2071 2072 _LIBCPP_INLINE_VISIBILITY 2073 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2074 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2075 is_nothrow_move_constructible<_T2>::value) 2076 : _T1(_VSTD::move(__p.first())), __second_(_VSTD::forward<_T2>(__p.second())) {} 2077 2078 _LIBCPP_INLINE_VISIBILITY 2079 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2080 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2081 is_nothrow_move_assignable<_T2>::value) 2082 { 2083 _T1::operator=(_VSTD::move(__p.first())); 2084 __second_ = _VSTD::forward<_T2>(__p.second()); 2085 return *this; 2086 } 2087 2088#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2089 2090#ifndef _LIBCPP_HAS_NO_VARIADICS 2091 2092 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2093 _LIBCPP_INLINE_VISIBILITY 2094 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2095 tuple<_Args1...> __first_args, 2096 tuple<_Args2...> __second_args, 2097 __tuple_indices<_I1...>, 2098 __tuple_indices<_I2...>) 2099 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2100 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2101 {} 2102 2103#endif // _LIBCPP_HAS_NO_VARIADICS 2104 2105 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2106 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2107 2108 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2109 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2110 2111 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2112 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2113 __is_nothrow_swappable<_T2>::value) 2114 { 2115 using _VSTD::swap; 2116 swap(__second_, __x.__second_); 2117 } 2118}; 2119 2120template <class _T1, class _T2> 2121class __libcpp_compressed_pair_imp<_T1, _T2, 2> 2122 : private _T2 2123{ 2124private: 2125 _T1 __first_; 2126public: 2127 typedef _T1 _T1_param; 2128 typedef _T2 _T2_param; 2129 2130 typedef typename remove_reference<_T1>::type& _T1_reference; 2131 typedef _T2& _T2_reference; 2132 2133 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 2134 typedef const _T2& _T2_const_reference; 2135 2136 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2137 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2138 : __first_(_VSTD::forward<_T1_param>(__t1)) {} 2139 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2140 : _T2(_VSTD::forward<_T2_param>(__t2)) {} 2141 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2142 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2143 is_nothrow_move_constructible<_T2>::value) 2144 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_(_VSTD::forward<_T1_param>(__t1)) {} 2145 2146#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2147 2148 _LIBCPP_INLINE_VISIBILITY 2149 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2150 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2151 is_nothrow_copy_constructible<_T2>::value) 2152 : _T2(__p.second()), __first_(__p.first()) {} 2153 2154 _LIBCPP_INLINE_VISIBILITY 2155 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2156 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2157 is_nothrow_copy_assignable<_T2>::value) 2158 { 2159 _T2::operator=(__p.second()); 2160 __first_ = __p.first(); 2161 return *this; 2162 } 2163 2164 _LIBCPP_INLINE_VISIBILITY 2165 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2166 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2167 is_nothrow_move_constructible<_T2>::value) 2168 : _T2(_VSTD::forward<_T2>(__p.second())), __first_(_VSTD::move(__p.first())) {} 2169 2170 _LIBCPP_INLINE_VISIBILITY 2171 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2172 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2173 is_nothrow_move_assignable<_T2>::value) 2174 { 2175 _T2::operator=(_VSTD::forward<_T2>(__p.second())); 2176 __first_ = _VSTD::move(__p.first()); 2177 return *this; 2178 } 2179 2180#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2181 2182#ifndef _LIBCPP_HAS_NO_VARIADICS 2183 2184 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2185 _LIBCPP_INLINE_VISIBILITY 2186 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2187 tuple<_Args1...> __first_args, 2188 tuple<_Args2...> __second_args, 2189 __tuple_indices<_I1...>, 2190 __tuple_indices<_I2...>) 2191 : _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...), 2192 __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...) 2193 2194 {} 2195 2196#endif // _LIBCPP_HAS_NO_VARIADICS 2197 2198 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2199 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2200 2201 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2202 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2203 2204 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2205 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2206 __is_nothrow_swappable<_T2>::value) 2207 { 2208 using _VSTD::swap; 2209 swap(__first_, __x.__first_); 2210 } 2211}; 2212 2213template <class _T1, class _T2> 2214class __libcpp_compressed_pair_imp<_T1, _T2, 3> 2215 : private _T1, 2216 private _T2 2217{ 2218public: 2219 typedef _T1 _T1_param; 2220 typedef _T2 _T2_param; 2221 2222 typedef _T1& _T1_reference; 2223 typedef _T2& _T2_reference; 2224 2225 typedef const _T1& _T1_const_reference; 2226 typedef const _T2& _T2_const_reference; 2227 2228 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2229 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2230 : _T1(_VSTD::forward<_T1_param>(__t1)) {} 2231 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2232 : _T2(_VSTD::forward<_T2_param>(__t2)) {} 2233 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2234 : _T1(_VSTD::forward<_T1_param>(__t1)), _T2(_VSTD::forward<_T2_param>(__t2)) {} 2235 2236#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2237 2238 _LIBCPP_INLINE_VISIBILITY 2239 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2240 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2241 is_nothrow_copy_constructible<_T2>::value) 2242 : _T1(__p.first()), _T2(__p.second()) {} 2243 2244 _LIBCPP_INLINE_VISIBILITY 2245 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2246 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2247 is_nothrow_copy_assignable<_T2>::value) 2248 { 2249 _T1::operator=(__p.first()); 2250 _T2::operator=(__p.second()); 2251 return *this; 2252 } 2253 2254 _LIBCPP_INLINE_VISIBILITY 2255 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2256 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2257 is_nothrow_move_constructible<_T2>::value) 2258 : _T1(_VSTD::move(__p.first())), _T2(_VSTD::move(__p.second())) {} 2259 2260 _LIBCPP_INLINE_VISIBILITY 2261 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2262 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2263 is_nothrow_move_assignable<_T2>::value) 2264 { 2265 _T1::operator=(_VSTD::move(__p.first())); 2266 _T2::operator=(_VSTD::move(__p.second())); 2267 return *this; 2268 } 2269 2270#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2271 2272#ifndef _LIBCPP_HAS_NO_VARIADICS 2273 2274 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2275 _LIBCPP_INLINE_VISIBILITY 2276 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2277 tuple<_Args1...> __first_args, 2278 tuple<_Args2...> __second_args, 2279 __tuple_indices<_I1...>, 2280 __tuple_indices<_I2...>) 2281 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2282 _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2283 {} 2284 2285#endif // _LIBCPP_HAS_NO_VARIADICS 2286 2287 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2288 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2289 2290 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2291 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2292 2293 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp&) 2294 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2295 __is_nothrow_swappable<_T2>::value) 2296 { 2297 } 2298}; 2299 2300template <class _T1, class _T2> 2301class __compressed_pair 2302 : private __libcpp_compressed_pair_imp<_T1, _T2> 2303{ 2304 typedef __libcpp_compressed_pair_imp<_T1, _T2> base; 2305public: 2306 typedef typename base::_T1_param _T1_param; 2307 typedef typename base::_T2_param _T2_param; 2308 2309 typedef typename base::_T1_reference _T1_reference; 2310 typedef typename base::_T2_reference _T2_reference; 2311 2312 typedef typename base::_T1_const_reference _T1_const_reference; 2313 typedef typename base::_T2_const_reference _T2_const_reference; 2314 2315 _LIBCPP_INLINE_VISIBILITY __compressed_pair() {} 2316 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T1_param __t1) 2317 : base(_VSTD::forward<_T1_param>(__t1)) {} 2318 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T2_param __t2) 2319 : base(_VSTD::forward<_T2_param>(__t2)) {} 2320 _LIBCPP_INLINE_VISIBILITY __compressed_pair(_T1_param __t1, _T2_param __t2) 2321 : base(_VSTD::forward<_T1_param>(__t1), _VSTD::forward<_T2_param>(__t2)) {} 2322 2323#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2324 2325 _LIBCPP_INLINE_VISIBILITY 2326 __compressed_pair(const __compressed_pair& __p) 2327 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2328 is_nothrow_copy_constructible<_T2>::value) 2329 : base(__p) {} 2330 2331 _LIBCPP_INLINE_VISIBILITY 2332 __compressed_pair& operator=(const __compressed_pair& __p) 2333 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2334 is_nothrow_copy_assignable<_T2>::value) 2335 { 2336 base::operator=(__p); 2337 return *this; 2338 } 2339 2340 _LIBCPP_INLINE_VISIBILITY 2341 __compressed_pair(__compressed_pair&& __p) 2342 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2343 is_nothrow_move_constructible<_T2>::value) 2344 : base(_VSTD::move(__p)) {} 2345 2346 _LIBCPP_INLINE_VISIBILITY 2347 __compressed_pair& operator=(__compressed_pair&& __p) 2348 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2349 is_nothrow_move_assignable<_T2>::value) 2350 { 2351 base::operator=(_VSTD::move(__p)); 2352 return *this; 2353 } 2354 2355#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2356 2357#ifndef _LIBCPP_HAS_NO_VARIADICS 2358 2359 template <class... _Args1, class... _Args2> 2360 _LIBCPP_INLINE_VISIBILITY 2361 __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args, 2362 tuple<_Args2...> __second_args) 2363 : base(__pc, _VSTD::move(__first_args), _VSTD::move(__second_args), 2364 typename __make_tuple_indices<sizeof...(_Args1)>::type(), 2365 typename __make_tuple_indices<sizeof...(_Args2) >::type()) 2366 {} 2367 2368#endif // _LIBCPP_HAS_NO_VARIADICS 2369 2370 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return base::first();} 2371 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return base::first();} 2372 2373 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return base::second();} 2374 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return base::second();} 2375 2376 _LIBCPP_INLINE_VISIBILITY void swap(__compressed_pair& __x) 2377 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2378 __is_nothrow_swappable<_T2>::value) 2379 {base::swap(__x);} 2380}; 2381 2382template <class _T1, class _T2> 2383inline _LIBCPP_INLINE_VISIBILITY 2384void 2385swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y) 2386 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2387 __is_nothrow_swappable<_T2>::value) 2388 {__x.swap(__y);} 2389 2390// __same_or_less_cv_qualified 2391 2392template <class _Ptr1, class _Ptr2, 2393 bool = is_same<typename remove_cv<typename pointer_traits<_Ptr1>::element_type>::type, 2394 typename remove_cv<typename pointer_traits<_Ptr2>::element_type>::type 2395 >::value 2396 > 2397struct __same_or_less_cv_qualified_imp 2398 : is_convertible<_Ptr1, _Ptr2> {}; 2399 2400template <class _Ptr1, class _Ptr2> 2401struct __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2, false> 2402 : false_type {}; 2403 2404template <class _Ptr1, class _Ptr2, bool = is_pointer<_Ptr1>::value || 2405 is_same<_Ptr1, _Ptr2>::value || 2406 __has_element_type<_Ptr1>::value> 2407struct __same_or_less_cv_qualified 2408 : __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2> {}; 2409 2410template <class _Ptr1, class _Ptr2> 2411struct __same_or_less_cv_qualified<_Ptr1, _Ptr2, false> 2412 : false_type {}; 2413 2414// default_delete 2415 2416template <class _Tp> 2417struct _LIBCPP_TYPE_VIS_ONLY default_delete 2418{ 2419#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2420 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2421#else 2422 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2423#endif 2424 template <class _Up> 2425 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up>&, 2426 typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2427 _LIBCPP_INLINE_VISIBILITY void operator() (_Tp* __ptr) const _NOEXCEPT 2428 { 2429 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2430 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type"); 2431 delete __ptr; 2432 } 2433}; 2434 2435template <class _Tp> 2436struct _LIBCPP_TYPE_VIS_ONLY default_delete<_Tp[]> 2437{ 2438public: 2439#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2440 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2441#else 2442 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2443#endif 2444 template <class _Up> 2445 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up[]>&, 2446 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2447 template <class _Up> 2448 _LIBCPP_INLINE_VISIBILITY 2449 void operator() (_Up* __ptr, 2450 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) const _NOEXCEPT 2451 { 2452 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2453 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type"); 2454 delete [] __ptr; 2455 } 2456}; 2457 2458template <class _Tp, class _Dp = default_delete<_Tp> > 2459class _LIBCPP_TYPE_VIS_ONLY unique_ptr 2460{ 2461public: 2462 typedef _Tp element_type; 2463 typedef _Dp deleter_type; 2464 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2465private: 2466 __compressed_pair<pointer, deleter_type> __ptr_; 2467 2468#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2469 unique_ptr(unique_ptr&); 2470 template <class _Up, class _Ep> 2471 unique_ptr(unique_ptr<_Up, _Ep>&); 2472 unique_ptr& operator=(unique_ptr&); 2473 template <class _Up, class _Ep> 2474 unique_ptr& operator=(unique_ptr<_Up, _Ep>&); 2475#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2476 2477 struct __nat {int __for_bool_;}; 2478 2479 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2480 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2481public: 2482 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2483 : __ptr_(pointer()) 2484 { 2485 static_assert(!is_pointer<deleter_type>::value, 2486 "unique_ptr constructed with null function pointer deleter"); 2487 } 2488 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2489 : __ptr_(pointer()) 2490 { 2491 static_assert(!is_pointer<deleter_type>::value, 2492 "unique_ptr constructed with null function pointer deleter"); 2493 } 2494 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) _NOEXCEPT 2495 : __ptr_(_VSTD::move(__p)) 2496 { 2497 static_assert(!is_pointer<deleter_type>::value, 2498 "unique_ptr constructed with null function pointer deleter"); 2499 } 2500 2501#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2502 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename conditional< 2503 is_reference<deleter_type>::value, 2504 deleter_type, 2505 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2506 _NOEXCEPT 2507 : __ptr_(__p, __d) {} 2508 2509 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename remove_reference<deleter_type>::type&& __d) 2510 _NOEXCEPT 2511 : __ptr_(__p, _VSTD::move(__d)) 2512 { 2513 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2514 } 2515 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2516 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2517 template <class _Up, class _Ep> 2518 _LIBCPP_INLINE_VISIBILITY 2519 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2520 typename enable_if 2521 < 2522 !is_array<_Up>::value && 2523 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2524 is_convertible<_Ep, deleter_type>::value && 2525 ( 2526 !is_reference<deleter_type>::value || 2527 is_same<deleter_type, _Ep>::value 2528 ), 2529 __nat 2530 >::type = __nat()) _NOEXCEPT 2531 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {} 2532 2533 template <class _Up> 2534 _LIBCPP_INLINE_VISIBILITY unique_ptr(auto_ptr<_Up>&& __p, 2535 typename enable_if< 2536 is_convertible<_Up*, _Tp*>::value && 2537 is_same<_Dp, default_delete<_Tp> >::value, 2538 __nat 2539 >::type = __nat()) _NOEXCEPT 2540 : __ptr_(__p.release()) 2541 { 2542 } 2543 2544 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2545 { 2546 reset(__u.release()); 2547 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2548 return *this; 2549 } 2550 2551 template <class _Up, class _Ep> 2552 _LIBCPP_INLINE_VISIBILITY 2553 typename enable_if 2554 < 2555 !is_array<_Up>::value && 2556 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2557 is_assignable<deleter_type&, _Ep&&>::value, 2558 unique_ptr& 2559 >::type 2560 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2561 { 2562 reset(__u.release()); 2563 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2564 return *this; 2565 } 2566#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2567 2568 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2569 { 2570 return __rv<unique_ptr>(*this); 2571 } 2572 2573 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2574 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2575 2576 template <class _Up, class _Ep> 2577 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr<_Up, _Ep> __u) 2578 { 2579 reset(__u.release()); 2580 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2581 return *this; 2582 } 2583 2584 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2585 : __ptr_(_VSTD::move(__p), _VSTD::move(__d)) {} 2586 2587 template <class _Up> 2588 _LIBCPP_INLINE_VISIBILITY 2589 typename enable_if< 2590 is_convertible<_Up*, _Tp*>::value && 2591 is_same<_Dp, default_delete<_Tp> >::value, 2592 unique_ptr& 2593 >::type 2594 operator=(auto_ptr<_Up> __p) 2595 {reset(__p.release()); return *this;} 2596 2597#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2598 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2599 2600 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2601 { 2602 reset(); 2603 return *this; 2604 } 2605 2606 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator*() const 2607 {return *__ptr_.first();} 2608 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT {return __ptr_.first();} 2609 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2610 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2611 {return __ptr_.second();} 2612 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2613 {return __ptr_.second();} 2614 _LIBCPP_INLINE_VISIBILITY 2615 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2616 {return __ptr_.first() != nullptr;} 2617 2618 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2619 { 2620 pointer __t = __ptr_.first(); 2621 __ptr_.first() = pointer(); 2622 return __t; 2623 } 2624 2625 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) _NOEXCEPT 2626 { 2627 pointer __tmp = __ptr_.first(); 2628 __ptr_.first() = __p; 2629 if (__tmp) 2630 __ptr_.second()(__tmp); 2631 } 2632 2633 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) _NOEXCEPT 2634 {__ptr_.swap(__u.__ptr_);} 2635}; 2636 2637template <class _Tp, class _Dp> 2638class _LIBCPP_TYPE_VIS_ONLY unique_ptr<_Tp[], _Dp> 2639{ 2640public: 2641 typedef _Tp element_type; 2642 typedef _Dp deleter_type; 2643 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2644private: 2645 __compressed_pair<pointer, deleter_type> __ptr_; 2646 2647#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2648 unique_ptr(unique_ptr&); 2649 template <class _Up> 2650 unique_ptr(unique_ptr<_Up>&); 2651 unique_ptr& operator=(unique_ptr&); 2652 template <class _Up> 2653 unique_ptr& operator=(unique_ptr<_Up>&); 2654#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2655 2656 struct __nat {int __for_bool_;}; 2657 2658 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2659 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2660public: 2661 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2662 : __ptr_(pointer()) 2663 { 2664 static_assert(!is_pointer<deleter_type>::value, 2665 "unique_ptr constructed with null function pointer deleter"); 2666 } 2667 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2668 : __ptr_(pointer()) 2669 { 2670 static_assert(!is_pointer<deleter_type>::value, 2671 "unique_ptr constructed with null function pointer deleter"); 2672 } 2673#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2674 template <class _Pp> 2675 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(_Pp __p, 2676 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) _NOEXCEPT 2677 : __ptr_(__p) 2678 { 2679 static_assert(!is_pointer<deleter_type>::value, 2680 "unique_ptr constructed with null function pointer deleter"); 2681 } 2682 2683 template <class _Pp> 2684 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, typename conditional< 2685 is_reference<deleter_type>::value, 2686 deleter_type, 2687 typename add_lvalue_reference<const deleter_type>::type>::type __d, 2688 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2689 _NOEXCEPT 2690 : __ptr_(__p, __d) {} 2691 2692 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename conditional< 2693 is_reference<deleter_type>::value, 2694 deleter_type, 2695 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2696 _NOEXCEPT 2697 : __ptr_(pointer(), __d) {} 2698 2699 template <class _Pp> 2700 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, 2701 typename remove_reference<deleter_type>::type&& __d, 2702 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2703 _NOEXCEPT 2704 : __ptr_(__p, _VSTD::move(__d)) 2705 { 2706 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2707 } 2708 2709 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename remove_reference<deleter_type>::type&& __d) 2710 _NOEXCEPT 2711 : __ptr_(pointer(), _VSTD::move(__d)) 2712 { 2713 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2714 } 2715 2716 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2717 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2718 2719 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2720 { 2721 reset(__u.release()); 2722 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2723 return *this; 2724 } 2725 2726 template <class _Up, class _Ep> 2727 _LIBCPP_INLINE_VISIBILITY 2728 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2729 typename enable_if 2730 < 2731 is_array<_Up>::value && 2732 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value 2733 && is_convertible<_Ep, deleter_type>::value && 2734 ( 2735 !is_reference<deleter_type>::value || 2736 is_same<deleter_type, _Ep>::value 2737 ), 2738 __nat 2739 >::type = __nat() 2740 ) _NOEXCEPT 2741 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2742 2743 2744 template <class _Up, class _Ep> 2745 _LIBCPP_INLINE_VISIBILITY 2746 typename enable_if 2747 < 2748 is_array<_Up>::value && 2749 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2750 is_assignable<deleter_type&, _Ep&&>::value, 2751 unique_ptr& 2752 >::type 2753 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2754 { 2755 reset(__u.release()); 2756 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2757 return *this; 2758 } 2759#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2760 2761 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) 2762 : __ptr_(__p) 2763 { 2764 static_assert(!is_pointer<deleter_type>::value, 2765 "unique_ptr constructed with null function pointer deleter"); 2766 } 2767 2768 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2769 : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {} 2770 2771 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, deleter_type __d) 2772 : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {} 2773 2774 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2775 { 2776 return __rv<unique_ptr>(*this); 2777 } 2778 2779 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2780 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2781 2782 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(__rv<unique_ptr> __u) 2783 { 2784 reset(__u->release()); 2785 __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter()); 2786 return *this; 2787 } 2788 2789#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2790 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2791 2792 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2793 { 2794 reset(); 2795 return *this; 2796 } 2797 2798 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator[](size_t __i) const 2799 {return __ptr_.first()[__i];} 2800 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2801 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2802 {return __ptr_.second();} 2803 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2804 {return __ptr_.second();} 2805 _LIBCPP_INLINE_VISIBILITY 2806 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2807 {return __ptr_.first() != nullptr;} 2808 2809 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2810 { 2811 pointer __t = __ptr_.first(); 2812 __ptr_.first() = pointer(); 2813 return __t; 2814 } 2815 2816#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2817 template <class _Pp> 2818 _LIBCPP_INLINE_VISIBILITY 2819 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, void>::type 2820 reset(_Pp __p) _NOEXCEPT 2821 { 2822 pointer __tmp = __ptr_.first(); 2823 __ptr_.first() = __p; 2824 if (__tmp) 2825 __ptr_.second()(__tmp); 2826 } 2827 _LIBCPP_INLINE_VISIBILITY void reset(nullptr_t) _NOEXCEPT 2828 { 2829 pointer __tmp = __ptr_.first(); 2830 __ptr_.first() = nullptr; 2831 if (__tmp) 2832 __ptr_.second()(__tmp); 2833 } 2834 _LIBCPP_INLINE_VISIBILITY void reset() _NOEXCEPT 2835 { 2836 pointer __tmp = __ptr_.first(); 2837 __ptr_.first() = nullptr; 2838 if (__tmp) 2839 __ptr_.second()(__tmp); 2840 } 2841#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2842 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) 2843 { 2844 pointer __tmp = __ptr_.first(); 2845 __ptr_.first() = __p; 2846 if (__tmp) 2847 __ptr_.second()(__tmp); 2848 } 2849#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2850 2851 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);} 2852private: 2853 2854#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2855 template <class _Up> 2856 explicit unique_ptr(_Up); 2857 template <class _Up> 2858 unique_ptr(_Up __u, 2859 typename conditional< 2860 is_reference<deleter_type>::value, 2861 deleter_type, 2862 typename add_lvalue_reference<const deleter_type>::type>::type, 2863 typename enable_if 2864 < 2865 is_convertible<_Up, pointer>::value, 2866 __nat 2867 >::type = __nat()); 2868#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2869}; 2870 2871template <class _Tp, class _Dp> 2872inline _LIBCPP_INLINE_VISIBILITY 2873void 2874swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} 2875 2876template <class _T1, class _D1, class _T2, class _D2> 2877inline _LIBCPP_INLINE_VISIBILITY 2878bool 2879operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} 2880 2881template <class _T1, class _D1, class _T2, class _D2> 2882inline _LIBCPP_INLINE_VISIBILITY 2883bool 2884operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} 2885 2886template <class _T1, class _D1, class _T2, class _D2> 2887inline _LIBCPP_INLINE_VISIBILITY 2888bool 2889operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) 2890{ 2891 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2892 typedef typename unique_ptr<_T2, _D2>::pointer _P2; 2893 typedef typename common_type<_P1, _P2>::type _V; 2894 return less<_V>()(__x.get(), __y.get()); 2895} 2896 2897template <class _T1, class _D1, class _T2, class _D2> 2898inline _LIBCPP_INLINE_VISIBILITY 2899bool 2900operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} 2901 2902template <class _T1, class _D1, class _T2, class _D2> 2903inline _LIBCPP_INLINE_VISIBILITY 2904bool 2905operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} 2906 2907template <class _T1, class _D1, class _T2, class _D2> 2908inline _LIBCPP_INLINE_VISIBILITY 2909bool 2910operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} 2911 2912template <class _T1, class _D1> 2913inline _LIBCPP_INLINE_VISIBILITY 2914bool 2915operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2916{ 2917 return !__x; 2918} 2919 2920template <class _T1, class _D1> 2921inline _LIBCPP_INLINE_VISIBILITY 2922bool 2923operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2924{ 2925 return !__x; 2926} 2927 2928template <class _T1, class _D1> 2929inline _LIBCPP_INLINE_VISIBILITY 2930bool 2931operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2932{ 2933 return static_cast<bool>(__x); 2934} 2935 2936template <class _T1, class _D1> 2937inline _LIBCPP_INLINE_VISIBILITY 2938bool 2939operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2940{ 2941 return static_cast<bool>(__x); 2942} 2943 2944template <class _T1, class _D1> 2945inline _LIBCPP_INLINE_VISIBILITY 2946bool 2947operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2948{ 2949 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2950 return less<_P1>()(__x.get(), nullptr); 2951} 2952 2953template <class _T1, class _D1> 2954inline _LIBCPP_INLINE_VISIBILITY 2955bool 2956operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2957{ 2958 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2959 return less<_P1>()(nullptr, __x.get()); 2960} 2961 2962template <class _T1, class _D1> 2963inline _LIBCPP_INLINE_VISIBILITY 2964bool 2965operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2966{ 2967 return nullptr < __x; 2968} 2969 2970template <class _T1, class _D1> 2971inline _LIBCPP_INLINE_VISIBILITY 2972bool 2973operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2974{ 2975 return __x < nullptr; 2976} 2977 2978template <class _T1, class _D1> 2979inline _LIBCPP_INLINE_VISIBILITY 2980bool 2981operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2982{ 2983 return !(nullptr < __x); 2984} 2985 2986template <class _T1, class _D1> 2987inline _LIBCPP_INLINE_VISIBILITY 2988bool 2989operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2990{ 2991 return !(__x < nullptr); 2992} 2993 2994template <class _T1, class _D1> 2995inline _LIBCPP_INLINE_VISIBILITY 2996bool 2997operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2998{ 2999 return !(__x < nullptr); 3000} 3001 3002template <class _T1, class _D1> 3003inline _LIBCPP_INLINE_VISIBILITY 3004bool 3005operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3006{ 3007 return !(nullptr < __x); 3008} 3009 3010#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3011 3012template <class _Tp, class _Dp> 3013inline _LIBCPP_INLINE_VISIBILITY 3014unique_ptr<_Tp, _Dp> 3015move(unique_ptr<_Tp, _Dp>& __t) 3016{ 3017 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t)); 3018} 3019 3020#endif 3021 3022#if _LIBCPP_STD_VER > 11 3023 3024template<class _Tp> 3025struct __unique_if 3026{ 3027 typedef unique_ptr<_Tp> __unique_single; 3028}; 3029 3030template<class _Tp> 3031struct __unique_if<_Tp[]> 3032{ 3033 typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; 3034}; 3035 3036template<class _Tp, size_t _Np> 3037struct __unique_if<_Tp[_Np]> 3038{ 3039 typedef void __unique_array_known_bound; 3040}; 3041 3042template<class _Tp, class... _Args> 3043inline _LIBCPP_INLINE_VISIBILITY 3044typename __unique_if<_Tp>::__unique_single 3045make_unique(_Args&&... __args) 3046{ 3047 return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...)); 3048} 3049 3050template<class _Tp> 3051inline _LIBCPP_INLINE_VISIBILITY 3052typename __unique_if<_Tp>::__unique_array_unknown_bound 3053make_unique(size_t __n) 3054{ 3055 typedef typename remove_extent<_Tp>::type _Up; 3056 return unique_ptr<_Tp>(new _Up[__n]()); 3057} 3058 3059template<class _Tp, class... _Args> 3060 typename __unique_if<_Tp>::__unique_array_known_bound 3061 make_unique(_Args&&...) = delete; 3062 3063#endif // _LIBCPP_STD_VER > 11 3064 3065template <class _Tp> struct hash; 3066 3067template <class _Size> 3068inline _LIBCPP_INLINE_VISIBILITY 3069_Size 3070__loadword(const void* __p) 3071{ 3072 _Size __r; 3073 std::memcpy(&__r, __p, sizeof(__r)); 3074 return __r; 3075} 3076 3077// We use murmur2 when size_t is 32 bits, and cityhash64 when size_t 3078// is 64 bits. This is because cityhash64 uses 64bit x 64bit 3079// multiplication, which can be very slow on 32-bit systems. 3080template <class _Size, size_t = sizeof(_Size)*__CHAR_BIT__> 3081struct __murmur2_or_cityhash; 3082 3083template <class _Size> 3084struct __murmur2_or_cityhash<_Size, 32> 3085{ 3086 _Size operator()(const void* __key, _Size __len); 3087}; 3088 3089// murmur2 3090template <class _Size> 3091_Size 3092__murmur2_or_cityhash<_Size, 32>::operator()(const void* __key, _Size __len) 3093{ 3094 const _Size __m = 0x5bd1e995; 3095 const _Size __r = 24; 3096 _Size __h = __len; 3097 const unsigned char* __data = static_cast<const unsigned char*>(__key); 3098 for (; __len >= 4; __data += 4, __len -= 4) 3099 { 3100 _Size __k = __loadword<_Size>(__data); 3101 __k *= __m; 3102 __k ^= __k >> __r; 3103 __k *= __m; 3104 __h *= __m; 3105 __h ^= __k; 3106 } 3107 switch (__len) 3108 { 3109 case 3: 3110 __h ^= __data[2] << 16; 3111 case 2: 3112 __h ^= __data[1] << 8; 3113 case 1: 3114 __h ^= __data[0]; 3115 __h *= __m; 3116 } 3117 __h ^= __h >> 13; 3118 __h *= __m; 3119 __h ^= __h >> 15; 3120 return __h; 3121} 3122 3123template <class _Size> 3124struct __murmur2_or_cityhash<_Size, 64> 3125{ 3126 _Size operator()(const void* __key, _Size __len); 3127 3128 private: 3129 // Some primes between 2^63 and 2^64. 3130 static const _Size __k0 = 0xc3a5c85c97cb3127ULL; 3131 static const _Size __k1 = 0xb492b66fbe98f273ULL; 3132 static const _Size __k2 = 0x9ae16a3b2f90404fULL; 3133 static const _Size __k3 = 0xc949d7c7509e6557ULL; 3134 3135 static _Size __rotate(_Size __val, int __shift) { 3136 return __shift == 0 ? __val : ((__val >> __shift) | (__val << (64 - __shift))); 3137 } 3138 3139 static _Size __rotate_by_at_least_1(_Size __val, int __shift) { 3140 return (__val >> __shift) | (__val << (64 - __shift)); 3141 } 3142 3143 static _Size __shift_mix(_Size __val) { 3144 return __val ^ (__val >> 47); 3145 } 3146 3147 static _Size __hash_len_16(_Size __u, _Size __v) { 3148 const _Size __mul = 0x9ddfea08eb382d69ULL; 3149 _Size __a = (__u ^ __v) * __mul; 3150 __a ^= (__a >> 47); 3151 _Size __b = (__v ^ __a) * __mul; 3152 __b ^= (__b >> 47); 3153 __b *= __mul; 3154 return __b; 3155 } 3156 3157 static _Size __hash_len_0_to_16(const char* __s, _Size __len) { 3158 if (__len > 8) { 3159 const _Size __a = __loadword<_Size>(__s); 3160 const _Size __b = __loadword<_Size>(__s + __len - 8); 3161 return __hash_len_16(__a, __rotate_by_at_least_1(__b + __len, __len)) ^ __b; 3162 } 3163 if (__len >= 4) { 3164 const uint32_t __a = __loadword<uint32_t>(__s); 3165 const uint32_t __b = __loadword<uint32_t>(__s + __len - 4); 3166 return __hash_len_16(__len + (__a << 3), __b); 3167 } 3168 if (__len > 0) { 3169 const unsigned char __a = __s[0]; 3170 const unsigned char __b = __s[__len >> 1]; 3171 const unsigned char __c = __s[__len - 1]; 3172 const uint32_t __y = static_cast<uint32_t>(__a) + 3173 (static_cast<uint32_t>(__b) << 8); 3174 const uint32_t __z = __len + (static_cast<uint32_t>(__c) << 2); 3175 return __shift_mix(__y * __k2 ^ __z * __k3) * __k2; 3176 } 3177 return __k2; 3178 } 3179 3180 static _Size __hash_len_17_to_32(const char *__s, _Size __len) { 3181 const _Size __a = __loadword<_Size>(__s) * __k1; 3182 const _Size __b = __loadword<_Size>(__s + 8); 3183 const _Size __c = __loadword<_Size>(__s + __len - 8) * __k2; 3184 const _Size __d = __loadword<_Size>(__s + __len - 16) * __k0; 3185 return __hash_len_16(__rotate(__a - __b, 43) + __rotate(__c, 30) + __d, 3186 __a + __rotate(__b ^ __k3, 20) - __c + __len); 3187 } 3188 3189 // Return a 16-byte hash for 48 bytes. Quick and dirty. 3190 // Callers do best to use "random-looking" values for a and b. 3191 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3192 _Size __w, _Size __x, _Size __y, _Size __z, _Size __a, _Size __b) { 3193 __a += __w; 3194 __b = __rotate(__b + __a + __z, 21); 3195 const _Size __c = __a; 3196 __a += __x; 3197 __a += __y; 3198 __b += __rotate(__a, 44); 3199 return pair<_Size, _Size>(__a + __z, __b + __c); 3200 } 3201 3202 // Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty. 3203 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3204 const char* __s, _Size __a, _Size __b) { 3205 return __weak_hash_len_32_with_seeds(__loadword<_Size>(__s), 3206 __loadword<_Size>(__s + 8), 3207 __loadword<_Size>(__s + 16), 3208 __loadword<_Size>(__s + 24), 3209 __a, 3210 __b); 3211 } 3212 3213 // Return an 8-byte hash for 33 to 64 bytes. 3214 static _Size __hash_len_33_to_64(const char *__s, size_t __len) { 3215 _Size __z = __loadword<_Size>(__s + 24); 3216 _Size __a = __loadword<_Size>(__s) + 3217 (__len + __loadword<_Size>(__s + __len - 16)) * __k0; 3218 _Size __b = __rotate(__a + __z, 52); 3219 _Size __c = __rotate(__a, 37); 3220 __a += __loadword<_Size>(__s + 8); 3221 __c += __rotate(__a, 7); 3222 __a += __loadword<_Size>(__s + 16); 3223 _Size __vf = __a + __z; 3224 _Size __vs = __b + __rotate(__a, 31) + __c; 3225 __a = __loadword<_Size>(__s + 16) + __loadword<_Size>(__s + __len - 32); 3226 __z += __loadword<_Size>(__s + __len - 8); 3227 __b = __rotate(__a + __z, 52); 3228 __c = __rotate(__a, 37); 3229 __a += __loadword<_Size>(__s + __len - 24); 3230 __c += __rotate(__a, 7); 3231 __a += __loadword<_Size>(__s + __len - 16); 3232 _Size __wf = __a + __z; 3233 _Size __ws = __b + __rotate(__a, 31) + __c; 3234 _Size __r = __shift_mix((__vf + __ws) * __k2 + (__wf + __vs) * __k0); 3235 return __shift_mix(__r * __k0 + __vs) * __k2; 3236 } 3237}; 3238 3239// cityhash64 3240template <class _Size> 3241_Size 3242__murmur2_or_cityhash<_Size, 64>::operator()(const void* __key, _Size __len) 3243{ 3244 const char* __s = static_cast<const char*>(__key); 3245 if (__len <= 32) { 3246 if (__len <= 16) { 3247 return __hash_len_0_to_16(__s, __len); 3248 } else { 3249 return __hash_len_17_to_32(__s, __len); 3250 } 3251 } else if (__len <= 64) { 3252 return __hash_len_33_to_64(__s, __len); 3253 } 3254 3255 // For strings over 64 bytes we hash the end first, and then as we 3256 // loop we keep 56 bytes of state: v, w, x, y, and z. 3257 _Size __x = __loadword<_Size>(__s + __len - 40); 3258 _Size __y = __loadword<_Size>(__s + __len - 16) + 3259 __loadword<_Size>(__s + __len - 56); 3260 _Size __z = __hash_len_16(__loadword<_Size>(__s + __len - 48) + __len, 3261 __loadword<_Size>(__s + __len - 24)); 3262 pair<_Size, _Size> __v = __weak_hash_len_32_with_seeds(__s + __len - 64, __len, __z); 3263 pair<_Size, _Size> __w = __weak_hash_len_32_with_seeds(__s + __len - 32, __y + __k1, __x); 3264 __x = __x * __k1 + __loadword<_Size>(__s); 3265 3266 // Decrease len to the nearest multiple of 64, and operate on 64-byte chunks. 3267 __len = (__len - 1) & ~static_cast<_Size>(63); 3268 do { 3269 __x = __rotate(__x + __y + __v.first + __loadword<_Size>(__s + 8), 37) * __k1; 3270 __y = __rotate(__y + __v.second + __loadword<_Size>(__s + 48), 42) * __k1; 3271 __x ^= __w.second; 3272 __y += __v.first + __loadword<_Size>(__s + 40); 3273 __z = __rotate(__z + __w.first, 33) * __k1; 3274 __v = __weak_hash_len_32_with_seeds(__s, __v.second * __k1, __x + __w.first); 3275 __w = __weak_hash_len_32_with_seeds(__s + 32, __z + __w.second, 3276 __y + __loadword<_Size>(__s + 16)); 3277 std::swap(__z, __x); 3278 __s += 64; 3279 __len -= 64; 3280 } while (__len != 0); 3281 return __hash_len_16( 3282 __hash_len_16(__v.first, __w.first) + __shift_mix(__y) * __k1 + __z, 3283 __hash_len_16(__v.second, __w.second) + __x); 3284} 3285 3286template <class _Tp, size_t = sizeof(_Tp) / sizeof(size_t)> 3287struct __scalar_hash; 3288 3289template <class _Tp> 3290struct __scalar_hash<_Tp, 0> 3291 : public unary_function<_Tp, size_t> 3292{ 3293 _LIBCPP_INLINE_VISIBILITY 3294 size_t operator()(_Tp __v) const _NOEXCEPT 3295 { 3296 union 3297 { 3298 _Tp __t; 3299 size_t __a; 3300 } __u; 3301 __u.__a = 0; 3302 __u.__t = __v; 3303 return __u.__a; 3304 } 3305}; 3306 3307template <class _Tp> 3308struct __scalar_hash<_Tp, 1> 3309 : public unary_function<_Tp, size_t> 3310{ 3311 _LIBCPP_INLINE_VISIBILITY 3312 size_t operator()(_Tp __v) const _NOEXCEPT 3313 { 3314 union 3315 { 3316 _Tp __t; 3317 size_t __a; 3318 } __u; 3319 __u.__t = __v; 3320 return __u.__a; 3321 } 3322}; 3323 3324template <class _Tp> 3325struct __scalar_hash<_Tp, 2> 3326 : public unary_function<_Tp, size_t> 3327{ 3328 _LIBCPP_INLINE_VISIBILITY 3329 size_t operator()(_Tp __v) const _NOEXCEPT 3330 { 3331 union 3332 { 3333 _Tp __t; 3334 struct 3335 { 3336 size_t __a; 3337 size_t __b; 3338 }; 3339 } __u; 3340 __u.__t = __v; 3341 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3342 } 3343}; 3344 3345template <class _Tp> 3346struct __scalar_hash<_Tp, 3> 3347 : public unary_function<_Tp, size_t> 3348{ 3349 _LIBCPP_INLINE_VISIBILITY 3350 size_t operator()(_Tp __v) const _NOEXCEPT 3351 { 3352 union 3353 { 3354 _Tp __t; 3355 struct 3356 { 3357 size_t __a; 3358 size_t __b; 3359 size_t __c; 3360 }; 3361 } __u; 3362 __u.__t = __v; 3363 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3364 } 3365}; 3366 3367template <class _Tp> 3368struct __scalar_hash<_Tp, 4> 3369 : public unary_function<_Tp, size_t> 3370{ 3371 _LIBCPP_INLINE_VISIBILITY 3372 size_t operator()(_Tp __v) const _NOEXCEPT 3373 { 3374 union 3375 { 3376 _Tp __t; 3377 struct 3378 { 3379 size_t __a; 3380 size_t __b; 3381 size_t __c; 3382 size_t __d; 3383 }; 3384 } __u; 3385 __u.__t = __v; 3386 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3387 } 3388}; 3389 3390template<class _Tp> 3391struct _LIBCPP_TYPE_VIS_ONLY hash<_Tp*> 3392 : public unary_function<_Tp*, size_t> 3393{ 3394 _LIBCPP_INLINE_VISIBILITY 3395 size_t operator()(_Tp* __v) const _NOEXCEPT 3396 { 3397 union 3398 { 3399 _Tp* __t; 3400 size_t __a; 3401 } __u; 3402 __u.__t = __v; 3403 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3404 } 3405}; 3406 3407template <class _Tp, class _Dp> 3408struct _LIBCPP_TYPE_VIS_ONLY hash<unique_ptr<_Tp, _Dp> > 3409{ 3410 typedef unique_ptr<_Tp, _Dp> argument_type; 3411 typedef size_t result_type; 3412 _LIBCPP_INLINE_VISIBILITY 3413 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 3414 { 3415 typedef typename argument_type::pointer pointer; 3416 return hash<pointer>()(__ptr.get()); 3417 } 3418}; 3419 3420struct __destruct_n 3421{ 3422private: 3423 size_t size; 3424 3425 template <class _Tp> 3426 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT 3427 {for (size_t __i = 0; __i < size; ++__i, ++__p) __p->~_Tp();} 3428 3429 template <class _Tp> 3430 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT 3431 {} 3432 3433 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT 3434 {++size;} 3435 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT 3436 {} 3437 3438 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT 3439 {size = __s;} 3440 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT 3441 {} 3442public: 3443 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT 3444 : size(__s) {} 3445 3446 template <class _Tp> 3447 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT 3448 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3449 3450 template <class _Tp> 3451 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT 3452 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3453 3454 template <class _Tp> 3455 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT 3456 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3457}; 3458 3459template <class _Alloc> 3460class __allocator_destructor 3461{ 3462 typedef allocator_traits<_Alloc> __alloc_traits; 3463public: 3464 typedef typename __alloc_traits::pointer pointer; 3465 typedef typename __alloc_traits::size_type size_type; 3466private: 3467 _Alloc& __alloc_; 3468 size_type __s_; 3469public: 3470 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) 3471 _NOEXCEPT 3472 : __alloc_(__a), __s_(__s) {} 3473 _LIBCPP_INLINE_VISIBILITY 3474 void operator()(pointer __p) _NOEXCEPT 3475 {__alloc_traits::deallocate(__alloc_, __p, __s_);} 3476}; 3477 3478template <class _InputIterator, class _ForwardIterator> 3479_ForwardIterator 3480uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) 3481{ 3482 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3483#ifndef _LIBCPP_NO_EXCEPTIONS 3484 _ForwardIterator __s = __r; 3485 try 3486 { 3487#endif 3488 for (; __f != __l; ++__f, ++__r) 3489 ::new(&*__r) value_type(*__f); 3490#ifndef _LIBCPP_NO_EXCEPTIONS 3491 } 3492 catch (...) 3493 { 3494 for (; __s != __r; ++__s) 3495 __s->~value_type(); 3496 throw; 3497 } 3498#endif 3499 return __r; 3500} 3501 3502template <class _InputIterator, class _Size, class _ForwardIterator> 3503_ForwardIterator 3504uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) 3505{ 3506 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3507#ifndef _LIBCPP_NO_EXCEPTIONS 3508 _ForwardIterator __s = __r; 3509 try 3510 { 3511#endif 3512 for (; __n > 0; ++__f, ++__r, --__n) 3513 ::new(&*__r) value_type(*__f); 3514#ifndef _LIBCPP_NO_EXCEPTIONS 3515 } 3516 catch (...) 3517 { 3518 for (; __s != __r; ++__s) 3519 __s->~value_type(); 3520 throw; 3521 } 3522#endif 3523 return __r; 3524} 3525 3526template <class _ForwardIterator, class _Tp> 3527void 3528uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) 3529{ 3530 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3531#ifndef _LIBCPP_NO_EXCEPTIONS 3532 _ForwardIterator __s = __f; 3533 try 3534 { 3535#endif 3536 for (; __f != __l; ++__f) 3537 ::new(&*__f) value_type(__x); 3538#ifndef _LIBCPP_NO_EXCEPTIONS 3539 } 3540 catch (...) 3541 { 3542 for (; __s != __f; ++__s) 3543 __s->~value_type(); 3544 throw; 3545 } 3546#endif 3547} 3548 3549template <class _ForwardIterator, class _Size, class _Tp> 3550_ForwardIterator 3551uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) 3552{ 3553 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3554#ifndef _LIBCPP_NO_EXCEPTIONS 3555 _ForwardIterator __s = __f; 3556 try 3557 { 3558#endif 3559 for (; __n > 0; ++__f, --__n) 3560 ::new(&*__f) value_type(__x); 3561#ifndef _LIBCPP_NO_EXCEPTIONS 3562 } 3563 catch (...) 3564 { 3565 for (; __s != __f; ++__s) 3566 __s->~value_type(); 3567 throw; 3568 } 3569#endif 3570 return __f; 3571} 3572 3573class _LIBCPP_EXCEPTION_ABI bad_weak_ptr 3574 : public std::exception 3575{ 3576public: 3577 virtual ~bad_weak_ptr() _NOEXCEPT; 3578 virtual const char* what() const _NOEXCEPT; 3579}; 3580 3581template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 3582 3583class _LIBCPP_TYPE_VIS __shared_count 3584{ 3585 __shared_count(const __shared_count&); 3586 __shared_count& operator=(const __shared_count&); 3587 3588protected: 3589 long __shared_owners_; 3590 virtual ~__shared_count(); 3591private: 3592 virtual void __on_zero_shared() _NOEXCEPT = 0; 3593 3594public: 3595 _LIBCPP_INLINE_VISIBILITY 3596 explicit __shared_count(long __refs = 0) _NOEXCEPT 3597 : __shared_owners_(__refs) {} 3598 3599 void __add_shared() _NOEXCEPT; 3600 bool __release_shared() _NOEXCEPT; 3601 _LIBCPP_INLINE_VISIBILITY 3602 long use_count() const _NOEXCEPT {return __shared_owners_ + 1;} 3603}; 3604 3605class _LIBCPP_TYPE_VIS __shared_weak_count 3606 : private __shared_count 3607{ 3608 long __shared_weak_owners_; 3609 3610public: 3611 _LIBCPP_INLINE_VISIBILITY 3612 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT 3613 : __shared_count(__refs), 3614 __shared_weak_owners_(__refs) {} 3615protected: 3616 virtual ~__shared_weak_count(); 3617 3618public: 3619 void __add_shared() _NOEXCEPT; 3620 void __add_weak() _NOEXCEPT; 3621 void __release_shared() _NOEXCEPT; 3622 void __release_weak() _NOEXCEPT; 3623 _LIBCPP_INLINE_VISIBILITY 3624 long use_count() const _NOEXCEPT {return __shared_count::use_count();} 3625 __shared_weak_count* lock() _NOEXCEPT; 3626 3627 // Define the function out only if we build static libc++ without RTTI. 3628 // Otherwise we may break clients who need to compile their projects with 3629 // -fno-rtti and yet link against a libc++.dylib compiled 3630 // without -fno-rtti. 3631#if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC) 3632 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3633#endif 3634private: 3635 virtual void __on_zero_shared_weak() _NOEXCEPT = 0; 3636}; 3637 3638template <class _Tp, class _Dp, class _Alloc> 3639class __shared_ptr_pointer 3640 : public __shared_weak_count 3641{ 3642 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; 3643public: 3644 _LIBCPP_INLINE_VISIBILITY 3645 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) 3646 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {} 3647 3648#ifndef _LIBCPP_NO_RTTI 3649 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3650#endif 3651 3652private: 3653 virtual void __on_zero_shared() _NOEXCEPT; 3654 virtual void __on_zero_shared_weak() _NOEXCEPT; 3655}; 3656 3657#ifndef _LIBCPP_NO_RTTI 3658 3659template <class _Tp, class _Dp, class _Alloc> 3660const void* 3661__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT 3662{ 3663 return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : 0; 3664} 3665 3666#endif // _LIBCPP_NO_RTTI 3667 3668template <class _Tp, class _Dp, class _Alloc> 3669void 3670__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT 3671{ 3672 __data_.first().second()(__data_.first().first()); 3673 __data_.first().second().~_Dp(); 3674} 3675 3676template <class _Tp, class _Dp, class _Alloc> 3677void 3678__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3679{ 3680 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _A; 3681 typedef allocator_traits<_A> _ATraits; 3682 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3683 3684 _A __a(__data_.second()); 3685 __data_.second().~_Alloc(); 3686 __a.deallocate(_PTraits::pointer_to(*this), 1); 3687} 3688 3689template <class _Tp, class _Alloc> 3690class __shared_ptr_emplace 3691 : public __shared_weak_count 3692{ 3693 __compressed_pair<_Alloc, _Tp> __data_; 3694public: 3695#ifndef _LIBCPP_HAS_NO_VARIADICS 3696 3697 _LIBCPP_INLINE_VISIBILITY 3698 __shared_ptr_emplace(_Alloc __a) 3699 : __data_(_VSTD::move(__a)) {} 3700 3701 template <class ..._Args> 3702 _LIBCPP_INLINE_VISIBILITY 3703 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) 3704 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a), 3705 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {} 3706 3707#else // _LIBCPP_HAS_NO_VARIADICS 3708 3709 _LIBCPP_INLINE_VISIBILITY 3710 __shared_ptr_emplace(_Alloc __a) 3711 : __data_(__a) {} 3712 3713 template <class _A0> 3714 _LIBCPP_INLINE_VISIBILITY 3715 __shared_ptr_emplace(_Alloc __a, _A0& __a0) 3716 : __data_(__a, _Tp(__a0)) {} 3717 3718 template <class _A0, class _A1> 3719 _LIBCPP_INLINE_VISIBILITY 3720 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) 3721 : __data_(__a, _Tp(__a0, __a1)) {} 3722 3723 template <class _A0, class _A1, class _A2> 3724 _LIBCPP_INLINE_VISIBILITY 3725 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) 3726 : __data_(__a, _Tp(__a0, __a1, __a2)) {} 3727 3728#endif // _LIBCPP_HAS_NO_VARIADICS 3729 3730private: 3731 virtual void __on_zero_shared() _NOEXCEPT; 3732 virtual void __on_zero_shared_weak() _NOEXCEPT; 3733public: 3734 _LIBCPP_INLINE_VISIBILITY 3735 _Tp* get() _NOEXCEPT {return &__data_.second();} 3736}; 3737 3738template <class _Tp, class _Alloc> 3739void 3740__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT 3741{ 3742 __data_.second().~_Tp(); 3743} 3744 3745template <class _Tp, class _Alloc> 3746void 3747__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3748{ 3749 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type _A; 3750 typedef allocator_traits<_A> _ATraits; 3751 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3752 _A __a(__data_.first()); 3753 __data_.first().~_Alloc(); 3754 __a.deallocate(_PTraits::pointer_to(*this), 1); 3755} 3756 3757template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this; 3758 3759template<class _Tp> 3760class _LIBCPP_TYPE_VIS_ONLY shared_ptr 3761{ 3762public: 3763 typedef _Tp element_type; 3764private: 3765 element_type* __ptr_; 3766 __shared_weak_count* __cntrl_; 3767 3768 struct __nat {int __for_bool_;}; 3769public: 3770 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT; 3771 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT; 3772 template<class _Yp> 3773 explicit shared_ptr(_Yp* __p, 3774 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3775 template<class _Yp, class _Dp> 3776 shared_ptr(_Yp* __p, _Dp __d, 3777 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3778 template<class _Yp, class _Dp, class _Alloc> 3779 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 3780 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3781 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); 3782 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); 3783 template<class _Yp> shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT; 3784 shared_ptr(const shared_ptr& __r) _NOEXCEPT; 3785 template<class _Yp> 3786 shared_ptr(const shared_ptr<_Yp>& __r, 3787 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3788 _NOEXCEPT; 3789#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3790 shared_ptr(shared_ptr&& __r) _NOEXCEPT; 3791 template<class _Yp> shared_ptr(shared_ptr<_Yp>&& __r, 3792 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3793 _NOEXCEPT; 3794#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3795 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, 3796 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type= __nat()); 3797#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3798 template<class _Yp> 3799 shared_ptr(auto_ptr<_Yp>&& __r, 3800 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3801#else 3802 template<class _Yp> 3803 shared_ptr(auto_ptr<_Yp> __r, 3804 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3805#endif 3806#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3807 template <class _Yp, class _Dp> 3808 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3809 typename enable_if 3810 < 3811 !is_lvalue_reference<_Dp>::value && 3812 !is_array<_Yp>::value && 3813 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3814 __nat 3815 >::type = __nat()); 3816 template <class _Yp, class _Dp> 3817 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3818 typename enable_if 3819 < 3820 is_lvalue_reference<_Dp>::value && 3821 !is_array<_Yp>::value && 3822 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3823 __nat 3824 >::type = __nat()); 3825#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3826 template <class _Yp, class _Dp> 3827 shared_ptr(unique_ptr<_Yp, _Dp>, 3828 typename enable_if 3829 < 3830 !is_lvalue_reference<_Dp>::value && 3831 !is_array<_Yp>::value && 3832 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3833 __nat 3834 >::type = __nat()); 3835 template <class _Yp, class _Dp> 3836 shared_ptr(unique_ptr<_Yp, _Dp>, 3837 typename enable_if 3838 < 3839 is_lvalue_reference<_Dp>::value && 3840 !is_array<_Yp>::value && 3841 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3842 __nat 3843 >::type = __nat()); 3844#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3845 3846 ~shared_ptr(); 3847 3848 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT; 3849 template<class _Yp> 3850 typename enable_if 3851 < 3852 is_convertible<_Yp*, element_type*>::value, 3853 shared_ptr& 3854 >::type 3855 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT; 3856#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3857 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT; 3858 template<class _Yp> 3859 typename enable_if 3860 < 3861 is_convertible<_Yp*, element_type*>::value, 3862 shared_ptr<_Tp>& 3863 >::type 3864 operator=(shared_ptr<_Yp>&& __r); 3865 template<class _Yp> 3866 typename enable_if 3867 < 3868 !is_array<_Yp>::value && 3869 is_convertible<_Yp*, element_type*>::value, 3870 shared_ptr 3871 >::type& 3872 operator=(auto_ptr<_Yp>&& __r); 3873#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3874 template<class _Yp> 3875 typename enable_if 3876 < 3877 !is_array<_Yp>::value && 3878 is_convertible<_Yp*, element_type*>::value, 3879 shared_ptr& 3880 >::type 3881 operator=(auto_ptr<_Yp> __r); 3882#endif 3883 template <class _Yp, class _Dp> 3884 typename enable_if 3885 < 3886 !is_array<_Yp>::value && 3887 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3888 shared_ptr& 3889 >::type 3890#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3891 operator=(unique_ptr<_Yp, _Dp>&& __r); 3892#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3893 operator=(unique_ptr<_Yp, _Dp> __r); 3894#endif 3895 3896 void swap(shared_ptr& __r) _NOEXCEPT; 3897 void reset() _NOEXCEPT; 3898 template<class _Yp> 3899 typename enable_if 3900 < 3901 is_convertible<_Yp*, element_type*>::value, 3902 void 3903 >::type 3904 reset(_Yp* __p); 3905 template<class _Yp, class _Dp> 3906 typename enable_if 3907 < 3908 is_convertible<_Yp*, element_type*>::value, 3909 void 3910 >::type 3911 reset(_Yp* __p, _Dp __d); 3912 template<class _Yp, class _Dp, class _Alloc> 3913 typename enable_if 3914 < 3915 is_convertible<_Yp*, element_type*>::value, 3916 void 3917 >::type 3918 reset(_Yp* __p, _Dp __d, _Alloc __a); 3919 3920 _LIBCPP_INLINE_VISIBILITY 3921 element_type* get() const _NOEXCEPT {return __ptr_;} 3922 _LIBCPP_INLINE_VISIBILITY 3923 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT 3924 {return *__ptr_;} 3925 _LIBCPP_INLINE_VISIBILITY 3926 element_type* operator->() const _NOEXCEPT {return __ptr_;} 3927 _LIBCPP_INLINE_VISIBILITY 3928 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;} 3929 _LIBCPP_INLINE_VISIBILITY 3930 bool unique() const _NOEXCEPT {return use_count() == 1;} 3931 _LIBCPP_INLINE_VISIBILITY 3932 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;} 3933 template <class _Up> 3934 _LIBCPP_INLINE_VISIBILITY 3935 bool owner_before(shared_ptr<_Up> const& __p) const 3936 {return __cntrl_ < __p.__cntrl_;} 3937 template <class _Up> 3938 _LIBCPP_INLINE_VISIBILITY 3939 bool owner_before(weak_ptr<_Up> const& __p) const 3940 {return __cntrl_ < __p.__cntrl_;} 3941 _LIBCPP_INLINE_VISIBILITY 3942 bool 3943 __owner_equivalent(const shared_ptr& __p) const 3944 {return __cntrl_ == __p.__cntrl_;} 3945 3946#ifndef _LIBCPP_NO_RTTI 3947 template <class _Dp> 3948 _LIBCPP_INLINE_VISIBILITY 3949 _Dp* __get_deleter() const _NOEXCEPT 3950 {return (_Dp*)(__cntrl_ ? __cntrl_->__get_deleter(typeid(_Dp)) : 0);} 3951#endif // _LIBCPP_NO_RTTI 3952 3953#ifndef _LIBCPP_HAS_NO_VARIADICS 3954 3955 template<class ..._Args> 3956 static 3957 shared_ptr<_Tp> 3958 make_shared(_Args&& ...__args); 3959 3960 template<class _Alloc, class ..._Args> 3961 static 3962 shared_ptr<_Tp> 3963 allocate_shared(const _Alloc& __a, _Args&& ...__args); 3964 3965#else // _LIBCPP_HAS_NO_VARIADICS 3966 3967 static shared_ptr<_Tp> make_shared(); 3968 3969 template<class _A0> 3970 static shared_ptr<_Tp> make_shared(_A0&); 3971 3972 template<class _A0, class _A1> 3973 static shared_ptr<_Tp> make_shared(_A0&, _A1&); 3974 3975 template<class _A0, class _A1, class _A2> 3976 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); 3977 3978 template<class _Alloc> 3979 static shared_ptr<_Tp> 3980 allocate_shared(const _Alloc& __a); 3981 3982 template<class _Alloc, class _A0> 3983 static shared_ptr<_Tp> 3984 allocate_shared(const _Alloc& __a, _A0& __a0); 3985 3986 template<class _Alloc, class _A0, class _A1> 3987 static shared_ptr<_Tp> 3988 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); 3989 3990 template<class _Alloc, class _A0, class _A1, class _A2> 3991 static shared_ptr<_Tp> 3992 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); 3993 3994#endif // _LIBCPP_HAS_NO_VARIADICS 3995 3996private: 3997 3998 template <class _Yp> 3999 _LIBCPP_INLINE_VISIBILITY 4000 void 4001 __enable_weak_this(const enable_shared_from_this<_Yp>* __e) _NOEXCEPT 4002 { 4003 if (__e) 4004 __e->__weak_this_ = *this; 4005 } 4006 4007 _LIBCPP_INLINE_VISIBILITY 4008 void __enable_weak_this(const void*) _NOEXCEPT {} 4009 4010 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr; 4011 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 4012}; 4013 4014template<class _Tp> 4015inline _LIBCPP_INLINE_VISIBILITY 4016_LIBCPP_CONSTEXPR 4017shared_ptr<_Tp>::shared_ptr() _NOEXCEPT 4018 : __ptr_(0), 4019 __cntrl_(0) 4020{ 4021} 4022 4023template<class _Tp> 4024inline _LIBCPP_INLINE_VISIBILITY 4025_LIBCPP_CONSTEXPR 4026shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT 4027 : __ptr_(0), 4028 __cntrl_(0) 4029{ 4030} 4031 4032template<class _Tp> 4033template<class _Yp> 4034shared_ptr<_Tp>::shared_ptr(_Yp* __p, 4035 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4036 : __ptr_(__p) 4037{ 4038 unique_ptr<_Yp> __hold(__p); 4039 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4040 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), allocator<_Yp>()); 4041 __hold.release(); 4042 __enable_weak_this(__p); 4043} 4044 4045template<class _Tp> 4046template<class _Yp, class _Dp> 4047shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, 4048 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4049 : __ptr_(__p) 4050{ 4051#ifndef _LIBCPP_NO_EXCEPTIONS 4052 try 4053 { 4054#endif // _LIBCPP_NO_EXCEPTIONS 4055 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4056 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Yp>()); 4057 __enable_weak_this(__p); 4058#ifndef _LIBCPP_NO_EXCEPTIONS 4059 } 4060 catch (...) 4061 { 4062 __d(__p); 4063 throw; 4064 } 4065#endif // _LIBCPP_NO_EXCEPTIONS 4066} 4067 4068template<class _Tp> 4069template<class _Dp> 4070shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) 4071 : __ptr_(0) 4072{ 4073#ifndef _LIBCPP_NO_EXCEPTIONS 4074 try 4075 { 4076#endif // _LIBCPP_NO_EXCEPTIONS 4077 typedef __shared_ptr_pointer<nullptr_t, _Dp, allocator<_Tp> > _CntrlBlk; 4078 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Tp>()); 4079#ifndef _LIBCPP_NO_EXCEPTIONS 4080 } 4081 catch (...) 4082 { 4083 __d(__p); 4084 throw; 4085 } 4086#endif // _LIBCPP_NO_EXCEPTIONS 4087} 4088 4089template<class _Tp> 4090template<class _Yp, class _Dp, class _Alloc> 4091shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 4092 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4093 : __ptr_(__p) 4094{ 4095#ifndef _LIBCPP_NO_EXCEPTIONS 4096 try 4097 { 4098#endif // _LIBCPP_NO_EXCEPTIONS 4099 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; 4100 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4101 typedef __allocator_destructor<_A2> _D2; 4102 _A2 __a2(__a); 4103 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4104 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4105 _CntrlBlk(__p, __d, __a); 4106 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4107 __enable_weak_this(__p); 4108#ifndef _LIBCPP_NO_EXCEPTIONS 4109 } 4110 catch (...) 4111 { 4112 __d(__p); 4113 throw; 4114 } 4115#endif // _LIBCPP_NO_EXCEPTIONS 4116} 4117 4118template<class _Tp> 4119template<class _Dp, class _Alloc> 4120shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) 4121 : __ptr_(0) 4122{ 4123#ifndef _LIBCPP_NO_EXCEPTIONS 4124 try 4125 { 4126#endif // _LIBCPP_NO_EXCEPTIONS 4127 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; 4128 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4129 typedef __allocator_destructor<_A2> _D2; 4130 _A2 __a2(__a); 4131 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4132 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4133 _CntrlBlk(__p, __d, __a); 4134 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4135#ifndef _LIBCPP_NO_EXCEPTIONS 4136 } 4137 catch (...) 4138 { 4139 __d(__p); 4140 throw; 4141 } 4142#endif // _LIBCPP_NO_EXCEPTIONS 4143} 4144 4145template<class _Tp> 4146template<class _Yp> 4147inline _LIBCPP_INLINE_VISIBILITY 4148shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT 4149 : __ptr_(__p), 4150 __cntrl_(__r.__cntrl_) 4151{ 4152 if (__cntrl_) 4153 __cntrl_->__add_shared(); 4154} 4155 4156template<class _Tp> 4157inline _LIBCPP_INLINE_VISIBILITY 4158shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT 4159 : __ptr_(__r.__ptr_), 4160 __cntrl_(__r.__cntrl_) 4161{ 4162 if (__cntrl_) 4163 __cntrl_->__add_shared(); 4164} 4165 4166template<class _Tp> 4167template<class _Yp> 4168inline _LIBCPP_INLINE_VISIBILITY 4169shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, 4170 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4171 _NOEXCEPT 4172 : __ptr_(__r.__ptr_), 4173 __cntrl_(__r.__cntrl_) 4174{ 4175 if (__cntrl_) 4176 __cntrl_->__add_shared(); 4177} 4178 4179#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4180 4181template<class _Tp> 4182inline _LIBCPP_INLINE_VISIBILITY 4183shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT 4184 : __ptr_(__r.__ptr_), 4185 __cntrl_(__r.__cntrl_) 4186{ 4187 __r.__ptr_ = 0; 4188 __r.__cntrl_ = 0; 4189} 4190 4191template<class _Tp> 4192template<class _Yp> 4193inline _LIBCPP_INLINE_VISIBILITY 4194shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, 4195 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4196 _NOEXCEPT 4197 : __ptr_(__r.__ptr_), 4198 __cntrl_(__r.__cntrl_) 4199{ 4200 __r.__ptr_ = 0; 4201 __r.__cntrl_ = 0; 4202} 4203 4204#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4205 4206template<class _Tp> 4207template<class _Yp> 4208#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4209shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r, 4210#else 4211shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r, 4212#endif 4213 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4214 : __ptr_(__r.get()) 4215{ 4216 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4217 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); 4218 __enable_weak_this(__r.get()); 4219 __r.release(); 4220} 4221 4222template<class _Tp> 4223template <class _Yp, class _Dp> 4224#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4225shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4226#else 4227shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4228#endif 4229 typename enable_if 4230 < 4231 !is_lvalue_reference<_Dp>::value && 4232 !is_array<_Yp>::value && 4233 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4234 __nat 4235 >::type) 4236 : __ptr_(__r.get()) 4237{ 4238 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4239 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), allocator<_Yp>()); 4240 __enable_weak_this(__r.get()); 4241 __r.release(); 4242} 4243 4244template<class _Tp> 4245template <class _Yp, class _Dp> 4246#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4247shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4248#else 4249shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4250#endif 4251 typename enable_if 4252 < 4253 is_lvalue_reference<_Dp>::value && 4254 !is_array<_Yp>::value && 4255 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4256 __nat 4257 >::type) 4258 : __ptr_(__r.get()) 4259{ 4260 typedef __shared_ptr_pointer<_Yp*, 4261 reference_wrapper<typename remove_reference<_Dp>::type>, 4262 allocator<_Yp> > _CntrlBlk; 4263 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), allocator<_Yp>()); 4264 __enable_weak_this(__r.get()); 4265 __r.release(); 4266} 4267 4268#ifndef _LIBCPP_HAS_NO_VARIADICS 4269 4270template<class _Tp> 4271template<class ..._Args> 4272shared_ptr<_Tp> 4273shared_ptr<_Tp>::make_shared(_Args&& ...__args) 4274{ 4275 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4276 typedef allocator<_CntrlBlk> _A2; 4277 typedef __allocator_destructor<_A2> _D2; 4278 _A2 __a2; 4279 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4280 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...); 4281 shared_ptr<_Tp> __r; 4282 __r.__ptr_ = __hold2.get()->get(); 4283 __r.__cntrl_ = __hold2.release(); 4284 __r.__enable_weak_this(__r.__ptr_); 4285 return __r; 4286} 4287 4288template<class _Tp> 4289template<class _Alloc, class ..._Args> 4290shared_ptr<_Tp> 4291shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) 4292{ 4293 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4294 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4295 typedef __allocator_destructor<_A2> _D2; 4296 _A2 __a2(__a); 4297 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4298 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4299 _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...); 4300 shared_ptr<_Tp> __r; 4301 __r.__ptr_ = __hold2.get()->get(); 4302 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4303 __r.__enable_weak_this(__r.__ptr_); 4304 return __r; 4305} 4306 4307#else // _LIBCPP_HAS_NO_VARIADICS 4308 4309template<class _Tp> 4310shared_ptr<_Tp> 4311shared_ptr<_Tp>::make_shared() 4312{ 4313 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4314 typedef allocator<_CntrlBlk> _Alloc2; 4315 typedef __allocator_destructor<_Alloc2> _D2; 4316 _Alloc2 __alloc2; 4317 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4318 ::new(__hold2.get()) _CntrlBlk(__alloc2); 4319 shared_ptr<_Tp> __r; 4320 __r.__ptr_ = __hold2.get()->get(); 4321 __r.__cntrl_ = __hold2.release(); 4322 __r.__enable_weak_this(__r.__ptr_); 4323 return __r; 4324} 4325 4326template<class _Tp> 4327template<class _A0> 4328shared_ptr<_Tp> 4329shared_ptr<_Tp>::make_shared(_A0& __a0) 4330{ 4331 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4332 typedef allocator<_CntrlBlk> _Alloc2; 4333 typedef __allocator_destructor<_Alloc2> _D2; 4334 _Alloc2 __alloc2; 4335 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4336 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); 4337 shared_ptr<_Tp> __r; 4338 __r.__ptr_ = __hold2.get()->get(); 4339 __r.__cntrl_ = __hold2.release(); 4340 __r.__enable_weak_this(__r.__ptr_); 4341 return __r; 4342} 4343 4344template<class _Tp> 4345template<class _A0, class _A1> 4346shared_ptr<_Tp> 4347shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) 4348{ 4349 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4350 typedef allocator<_CntrlBlk> _Alloc2; 4351 typedef __allocator_destructor<_Alloc2> _D2; 4352 _Alloc2 __alloc2; 4353 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4354 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); 4355 shared_ptr<_Tp> __r; 4356 __r.__ptr_ = __hold2.get()->get(); 4357 __r.__cntrl_ = __hold2.release(); 4358 __r.__enable_weak_this(__r.__ptr_); 4359 return __r; 4360} 4361 4362template<class _Tp> 4363template<class _A0, class _A1, class _A2> 4364shared_ptr<_Tp> 4365shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4366{ 4367 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4368 typedef allocator<_CntrlBlk> _Alloc2; 4369 typedef __allocator_destructor<_Alloc2> _D2; 4370 _Alloc2 __alloc2; 4371 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4372 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); 4373 shared_ptr<_Tp> __r; 4374 __r.__ptr_ = __hold2.get()->get(); 4375 __r.__cntrl_ = __hold2.release(); 4376 __r.__enable_weak_this(__r.__ptr_); 4377 return __r; 4378} 4379 4380template<class _Tp> 4381template<class _Alloc> 4382shared_ptr<_Tp> 4383shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) 4384{ 4385 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4386 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4387 typedef __allocator_destructor<_Alloc2> _D2; 4388 _Alloc2 __alloc2(__a); 4389 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4390 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4391 _CntrlBlk(__a); 4392 shared_ptr<_Tp> __r; 4393 __r.__ptr_ = __hold2.get()->get(); 4394 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4395 __r.__enable_weak_this(__r.__ptr_); 4396 return __r; 4397} 4398 4399template<class _Tp> 4400template<class _Alloc, class _A0> 4401shared_ptr<_Tp> 4402shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) 4403{ 4404 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4405 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4406 typedef __allocator_destructor<_Alloc2> _D2; 4407 _Alloc2 __alloc2(__a); 4408 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4409 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4410 _CntrlBlk(__a, __a0); 4411 shared_ptr<_Tp> __r; 4412 __r.__ptr_ = __hold2.get()->get(); 4413 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4414 __r.__enable_weak_this(__r.__ptr_); 4415 return __r; 4416} 4417 4418template<class _Tp> 4419template<class _Alloc, class _A0, class _A1> 4420shared_ptr<_Tp> 4421shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4422{ 4423 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4424 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4425 typedef __allocator_destructor<_Alloc2> _D2; 4426 _Alloc2 __alloc2(__a); 4427 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4428 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4429 _CntrlBlk(__a, __a0, __a1); 4430 shared_ptr<_Tp> __r; 4431 __r.__ptr_ = __hold2.get()->get(); 4432 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4433 __r.__enable_weak_this(__r.__ptr_); 4434 return __r; 4435} 4436 4437template<class _Tp> 4438template<class _Alloc, class _A0, class _A1, class _A2> 4439shared_ptr<_Tp> 4440shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4441{ 4442 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4443 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4444 typedef __allocator_destructor<_Alloc2> _D2; 4445 _Alloc2 __alloc2(__a); 4446 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4447 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4448 _CntrlBlk(__a, __a0, __a1, __a2); 4449 shared_ptr<_Tp> __r; 4450 __r.__ptr_ = __hold2.get()->get(); 4451 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4452 __r.__enable_weak_this(__r.__ptr_); 4453 return __r; 4454} 4455 4456#endif // _LIBCPP_HAS_NO_VARIADICS 4457 4458template<class _Tp> 4459shared_ptr<_Tp>::~shared_ptr() 4460{ 4461 if (__cntrl_) 4462 __cntrl_->__release_shared(); 4463} 4464 4465template<class _Tp> 4466inline _LIBCPP_INLINE_VISIBILITY 4467shared_ptr<_Tp>& 4468shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT 4469{ 4470 shared_ptr(__r).swap(*this); 4471 return *this; 4472} 4473 4474template<class _Tp> 4475template<class _Yp> 4476inline _LIBCPP_INLINE_VISIBILITY 4477typename enable_if 4478< 4479 is_convertible<_Yp*, _Tp*>::value, 4480 shared_ptr<_Tp>& 4481>::type 4482shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT 4483{ 4484 shared_ptr(__r).swap(*this); 4485 return *this; 4486} 4487 4488#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4489 4490template<class _Tp> 4491inline _LIBCPP_INLINE_VISIBILITY 4492shared_ptr<_Tp>& 4493shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT 4494{ 4495 shared_ptr(_VSTD::move(__r)).swap(*this); 4496 return *this; 4497} 4498 4499template<class _Tp> 4500template<class _Yp> 4501inline _LIBCPP_INLINE_VISIBILITY 4502typename enable_if 4503< 4504 is_convertible<_Yp*, _Tp*>::value, 4505 shared_ptr<_Tp>& 4506>::type 4507shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) 4508{ 4509 shared_ptr(_VSTD::move(__r)).swap(*this); 4510 return *this; 4511} 4512 4513template<class _Tp> 4514template<class _Yp> 4515inline _LIBCPP_INLINE_VISIBILITY 4516typename enable_if 4517< 4518 !is_array<_Yp>::value && 4519 is_convertible<_Yp*, _Tp*>::value, 4520 shared_ptr<_Tp> 4521>::type& 4522shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) 4523{ 4524 shared_ptr(_VSTD::move(__r)).swap(*this); 4525 return *this; 4526} 4527 4528template<class _Tp> 4529template <class _Yp, class _Dp> 4530inline _LIBCPP_INLINE_VISIBILITY 4531typename enable_if 4532< 4533 !is_array<_Yp>::value && 4534 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4535 shared_ptr<_Tp>& 4536>::type 4537shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) 4538{ 4539 shared_ptr(_VSTD::move(__r)).swap(*this); 4540 return *this; 4541} 4542 4543#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4544 4545template<class _Tp> 4546template<class _Yp> 4547inline _LIBCPP_INLINE_VISIBILITY 4548typename enable_if 4549< 4550 !is_array<_Yp>::value && 4551 is_convertible<_Yp*, _Tp*>::value, 4552 shared_ptr<_Tp>& 4553>::type 4554shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) 4555{ 4556 shared_ptr(__r).swap(*this); 4557 return *this; 4558} 4559 4560template<class _Tp> 4561template <class _Yp, class _Dp> 4562inline _LIBCPP_INLINE_VISIBILITY 4563typename enable_if 4564< 4565 !is_array<_Yp>::value && 4566 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4567 shared_ptr<_Tp>& 4568>::type 4569shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) 4570{ 4571 shared_ptr(_VSTD::move(__r)).swap(*this); 4572 return *this; 4573} 4574 4575#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4576 4577template<class _Tp> 4578inline _LIBCPP_INLINE_VISIBILITY 4579void 4580shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT 4581{ 4582 _VSTD::swap(__ptr_, __r.__ptr_); 4583 _VSTD::swap(__cntrl_, __r.__cntrl_); 4584} 4585 4586template<class _Tp> 4587inline _LIBCPP_INLINE_VISIBILITY 4588void 4589shared_ptr<_Tp>::reset() _NOEXCEPT 4590{ 4591 shared_ptr().swap(*this); 4592} 4593 4594template<class _Tp> 4595template<class _Yp> 4596inline _LIBCPP_INLINE_VISIBILITY 4597typename enable_if 4598< 4599 is_convertible<_Yp*, _Tp*>::value, 4600 void 4601>::type 4602shared_ptr<_Tp>::reset(_Yp* __p) 4603{ 4604 shared_ptr(__p).swap(*this); 4605} 4606 4607template<class _Tp> 4608template<class _Yp, class _Dp> 4609inline _LIBCPP_INLINE_VISIBILITY 4610typename enable_if 4611< 4612 is_convertible<_Yp*, _Tp*>::value, 4613 void 4614>::type 4615shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) 4616{ 4617 shared_ptr(__p, __d).swap(*this); 4618} 4619 4620template<class _Tp> 4621template<class _Yp, class _Dp, class _Alloc> 4622inline _LIBCPP_INLINE_VISIBILITY 4623typename enable_if 4624< 4625 is_convertible<_Yp*, _Tp*>::value, 4626 void 4627>::type 4628shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) 4629{ 4630 shared_ptr(__p, __d, __a).swap(*this); 4631} 4632 4633#ifndef _LIBCPP_HAS_NO_VARIADICS 4634 4635template<class _Tp, class ..._Args> 4636inline _LIBCPP_INLINE_VISIBILITY 4637typename enable_if 4638< 4639 !is_array<_Tp>::value, 4640 shared_ptr<_Tp> 4641>::type 4642make_shared(_Args&& ...__args) 4643{ 4644 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...); 4645} 4646 4647template<class _Tp, class _Alloc, class ..._Args> 4648inline _LIBCPP_INLINE_VISIBILITY 4649typename enable_if 4650< 4651 !is_array<_Tp>::value, 4652 shared_ptr<_Tp> 4653>::type 4654allocate_shared(const _Alloc& __a, _Args&& ...__args) 4655{ 4656 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...); 4657} 4658 4659#else // _LIBCPP_HAS_NO_VARIADICS 4660 4661template<class _Tp> 4662inline _LIBCPP_INLINE_VISIBILITY 4663shared_ptr<_Tp> 4664make_shared() 4665{ 4666 return shared_ptr<_Tp>::make_shared(); 4667} 4668 4669template<class _Tp, class _A0> 4670inline _LIBCPP_INLINE_VISIBILITY 4671shared_ptr<_Tp> 4672make_shared(_A0& __a0) 4673{ 4674 return shared_ptr<_Tp>::make_shared(__a0); 4675} 4676 4677template<class _Tp, class _A0, class _A1> 4678inline _LIBCPP_INLINE_VISIBILITY 4679shared_ptr<_Tp> 4680make_shared(_A0& __a0, _A1& __a1) 4681{ 4682 return shared_ptr<_Tp>::make_shared(__a0, __a1); 4683} 4684 4685template<class _Tp, class _A0, class _A1, class _A2> 4686inline _LIBCPP_INLINE_VISIBILITY 4687shared_ptr<_Tp> 4688make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4689{ 4690 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); 4691} 4692 4693template<class _Tp, class _Alloc> 4694inline _LIBCPP_INLINE_VISIBILITY 4695shared_ptr<_Tp> 4696allocate_shared(const _Alloc& __a) 4697{ 4698 return shared_ptr<_Tp>::allocate_shared(__a); 4699} 4700 4701template<class _Tp, class _Alloc, class _A0> 4702inline _LIBCPP_INLINE_VISIBILITY 4703shared_ptr<_Tp> 4704allocate_shared(const _Alloc& __a, _A0& __a0) 4705{ 4706 return shared_ptr<_Tp>::allocate_shared(__a, __a0); 4707} 4708 4709template<class _Tp, class _Alloc, class _A0, class _A1> 4710inline _LIBCPP_INLINE_VISIBILITY 4711shared_ptr<_Tp> 4712allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4713{ 4714 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); 4715} 4716 4717template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> 4718inline _LIBCPP_INLINE_VISIBILITY 4719shared_ptr<_Tp> 4720allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4721{ 4722 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); 4723} 4724 4725#endif // _LIBCPP_HAS_NO_VARIADICS 4726 4727template<class _Tp, class _Up> 4728inline _LIBCPP_INLINE_VISIBILITY 4729bool 4730operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4731{ 4732 return __x.get() == __y.get(); 4733} 4734 4735template<class _Tp, class _Up> 4736inline _LIBCPP_INLINE_VISIBILITY 4737bool 4738operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4739{ 4740 return !(__x == __y); 4741} 4742 4743template<class _Tp, class _Up> 4744inline _LIBCPP_INLINE_VISIBILITY 4745bool 4746operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4747{ 4748 typedef typename common_type<_Tp*, _Up*>::type _V; 4749 return less<_V>()(__x.get(), __y.get()); 4750} 4751 4752template<class _Tp, class _Up> 4753inline _LIBCPP_INLINE_VISIBILITY 4754bool 4755operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4756{ 4757 return __y < __x; 4758} 4759 4760template<class _Tp, class _Up> 4761inline _LIBCPP_INLINE_VISIBILITY 4762bool 4763operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4764{ 4765 return !(__y < __x); 4766} 4767 4768template<class _Tp, class _Up> 4769inline _LIBCPP_INLINE_VISIBILITY 4770bool 4771operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4772{ 4773 return !(__x < __y); 4774} 4775 4776template<class _Tp> 4777inline _LIBCPP_INLINE_VISIBILITY 4778bool 4779operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4780{ 4781 return !__x; 4782} 4783 4784template<class _Tp> 4785inline _LIBCPP_INLINE_VISIBILITY 4786bool 4787operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4788{ 4789 return !__x; 4790} 4791 4792template<class _Tp> 4793inline _LIBCPP_INLINE_VISIBILITY 4794bool 4795operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4796{ 4797 return static_cast<bool>(__x); 4798} 4799 4800template<class _Tp> 4801inline _LIBCPP_INLINE_VISIBILITY 4802bool 4803operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4804{ 4805 return static_cast<bool>(__x); 4806} 4807 4808template<class _Tp> 4809inline _LIBCPP_INLINE_VISIBILITY 4810bool 4811operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4812{ 4813 return less<_Tp*>()(__x.get(), nullptr); 4814} 4815 4816template<class _Tp> 4817inline _LIBCPP_INLINE_VISIBILITY 4818bool 4819operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4820{ 4821 return less<_Tp*>()(nullptr, __x.get()); 4822} 4823 4824template<class _Tp> 4825inline _LIBCPP_INLINE_VISIBILITY 4826bool 4827operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4828{ 4829 return nullptr < __x; 4830} 4831 4832template<class _Tp> 4833inline _LIBCPP_INLINE_VISIBILITY 4834bool 4835operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4836{ 4837 return __x < nullptr; 4838} 4839 4840template<class _Tp> 4841inline _LIBCPP_INLINE_VISIBILITY 4842bool 4843operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4844{ 4845 return !(nullptr < __x); 4846} 4847 4848template<class _Tp> 4849inline _LIBCPP_INLINE_VISIBILITY 4850bool 4851operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4852{ 4853 return !(__x < nullptr); 4854} 4855 4856template<class _Tp> 4857inline _LIBCPP_INLINE_VISIBILITY 4858bool 4859operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4860{ 4861 return !(__x < nullptr); 4862} 4863 4864template<class _Tp> 4865inline _LIBCPP_INLINE_VISIBILITY 4866bool 4867operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4868{ 4869 return !(nullptr < __x); 4870} 4871 4872template<class _Tp> 4873inline _LIBCPP_INLINE_VISIBILITY 4874void 4875swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT 4876{ 4877 __x.swap(__y); 4878} 4879 4880template<class _Tp, class _Up> 4881inline _LIBCPP_INLINE_VISIBILITY 4882typename enable_if 4883< 4884 !is_array<_Tp>::value && !is_array<_Up>::value, 4885 shared_ptr<_Tp> 4886>::type 4887static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4888{ 4889 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); 4890} 4891 4892template<class _Tp, class _Up> 4893inline _LIBCPP_INLINE_VISIBILITY 4894typename enable_if 4895< 4896 !is_array<_Tp>::value && !is_array<_Up>::value, 4897 shared_ptr<_Tp> 4898>::type 4899dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4900{ 4901 _Tp* __p = dynamic_cast<_Tp*>(__r.get()); 4902 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); 4903} 4904 4905template<class _Tp, class _Up> 4906typename enable_if 4907< 4908 is_array<_Tp>::value == is_array<_Up>::value, 4909 shared_ptr<_Tp> 4910>::type 4911const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4912{ 4913 typedef typename remove_extent<_Tp>::type _RTp; 4914 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get())); 4915} 4916 4917#ifndef _LIBCPP_NO_RTTI 4918 4919template<class _Dp, class _Tp> 4920inline _LIBCPP_INLINE_VISIBILITY 4921_Dp* 4922get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT 4923{ 4924 return __p.template __get_deleter<_Dp>(); 4925} 4926 4927#endif // _LIBCPP_NO_RTTI 4928 4929template<class _Tp> 4930class _LIBCPP_TYPE_VIS_ONLY weak_ptr 4931{ 4932public: 4933 typedef _Tp element_type; 4934private: 4935 element_type* __ptr_; 4936 __shared_weak_count* __cntrl_; 4937 4938public: 4939 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT; 4940 template<class _Yp> weak_ptr(shared_ptr<_Yp> const& __r, 4941 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4942 _NOEXCEPT; 4943 weak_ptr(weak_ptr const& __r) _NOEXCEPT; 4944 template<class _Yp> weak_ptr(weak_ptr<_Yp> const& __r, 4945 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4946 _NOEXCEPT; 4947 4948#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4949 weak_ptr(weak_ptr&& __r) _NOEXCEPT; 4950 template<class _Yp> weak_ptr(weak_ptr<_Yp>&& __r, 4951 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4952 _NOEXCEPT; 4953#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4954 ~weak_ptr(); 4955 4956 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT; 4957 template<class _Yp> 4958 typename enable_if 4959 < 4960 is_convertible<_Yp*, element_type*>::value, 4961 weak_ptr& 4962 >::type 4963 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT; 4964 4965#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4966 4967 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT; 4968 template<class _Yp> 4969 typename enable_if 4970 < 4971 is_convertible<_Yp*, element_type*>::value, 4972 weak_ptr& 4973 >::type 4974 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT; 4975 4976#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4977 4978 template<class _Yp> 4979 typename enable_if 4980 < 4981 is_convertible<_Yp*, element_type*>::value, 4982 weak_ptr& 4983 >::type 4984 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT; 4985 4986 void swap(weak_ptr& __r) _NOEXCEPT; 4987 void reset() _NOEXCEPT; 4988 4989 _LIBCPP_INLINE_VISIBILITY 4990 long use_count() const _NOEXCEPT 4991 {return __cntrl_ ? __cntrl_->use_count() : 0;} 4992 _LIBCPP_INLINE_VISIBILITY 4993 bool expired() const _NOEXCEPT 4994 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} 4995 shared_ptr<_Tp> lock() const _NOEXCEPT; 4996 template<class _Up> 4997 _LIBCPP_INLINE_VISIBILITY 4998 bool owner_before(const shared_ptr<_Up>& __r) const 4999 {return __cntrl_ < __r.__cntrl_;} 5000 template<class _Up> 5001 _LIBCPP_INLINE_VISIBILITY 5002 bool owner_before(const weak_ptr<_Up>& __r) const 5003 {return __cntrl_ < __r.__cntrl_;} 5004 5005 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 5006 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr; 5007}; 5008 5009template<class _Tp> 5010inline _LIBCPP_INLINE_VISIBILITY 5011_LIBCPP_CONSTEXPR 5012weak_ptr<_Tp>::weak_ptr() _NOEXCEPT 5013 : __ptr_(0), 5014 __cntrl_(0) 5015{ 5016} 5017 5018template<class _Tp> 5019inline _LIBCPP_INLINE_VISIBILITY 5020weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT 5021 : __ptr_(__r.__ptr_), 5022 __cntrl_(__r.__cntrl_) 5023{ 5024 if (__cntrl_) 5025 __cntrl_->__add_weak(); 5026} 5027 5028template<class _Tp> 5029template<class _Yp> 5030inline _LIBCPP_INLINE_VISIBILITY 5031weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, 5032 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5033 _NOEXCEPT 5034 : __ptr_(__r.__ptr_), 5035 __cntrl_(__r.__cntrl_) 5036{ 5037 if (__cntrl_) 5038 __cntrl_->__add_weak(); 5039} 5040 5041template<class _Tp> 5042template<class _Yp> 5043inline _LIBCPP_INLINE_VISIBILITY 5044weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, 5045 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5046 _NOEXCEPT 5047 : __ptr_(__r.__ptr_), 5048 __cntrl_(__r.__cntrl_) 5049{ 5050 if (__cntrl_) 5051 __cntrl_->__add_weak(); 5052} 5053 5054#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5055 5056template<class _Tp> 5057inline _LIBCPP_INLINE_VISIBILITY 5058weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT 5059 : __ptr_(__r.__ptr_), 5060 __cntrl_(__r.__cntrl_) 5061{ 5062 __r.__ptr_ = 0; 5063 __r.__cntrl_ = 0; 5064} 5065 5066template<class _Tp> 5067template<class _Yp> 5068inline _LIBCPP_INLINE_VISIBILITY 5069weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r, 5070 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5071 _NOEXCEPT 5072 : __ptr_(__r.__ptr_), 5073 __cntrl_(__r.__cntrl_) 5074{ 5075 __r.__ptr_ = 0; 5076 __r.__cntrl_ = 0; 5077} 5078 5079#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5080 5081template<class _Tp> 5082weak_ptr<_Tp>::~weak_ptr() 5083{ 5084 if (__cntrl_) 5085 __cntrl_->__release_weak(); 5086} 5087 5088template<class _Tp> 5089inline _LIBCPP_INLINE_VISIBILITY 5090weak_ptr<_Tp>& 5091weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT 5092{ 5093 weak_ptr(__r).swap(*this); 5094 return *this; 5095} 5096 5097template<class _Tp> 5098template<class _Yp> 5099inline _LIBCPP_INLINE_VISIBILITY 5100typename enable_if 5101< 5102 is_convertible<_Yp*, _Tp*>::value, 5103 weak_ptr<_Tp>& 5104>::type 5105weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT 5106{ 5107 weak_ptr(__r).swap(*this); 5108 return *this; 5109} 5110 5111#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5112 5113template<class _Tp> 5114inline _LIBCPP_INLINE_VISIBILITY 5115weak_ptr<_Tp>& 5116weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT 5117{ 5118 weak_ptr(_VSTD::move(__r)).swap(*this); 5119 return *this; 5120} 5121 5122template<class _Tp> 5123template<class _Yp> 5124inline _LIBCPP_INLINE_VISIBILITY 5125typename enable_if 5126< 5127 is_convertible<_Yp*, _Tp*>::value, 5128 weak_ptr<_Tp>& 5129>::type 5130weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT 5131{ 5132 weak_ptr(_VSTD::move(__r)).swap(*this); 5133 return *this; 5134} 5135 5136#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5137 5138template<class _Tp> 5139template<class _Yp> 5140inline _LIBCPP_INLINE_VISIBILITY 5141typename enable_if 5142< 5143 is_convertible<_Yp*, _Tp*>::value, 5144 weak_ptr<_Tp>& 5145>::type 5146weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT 5147{ 5148 weak_ptr(__r).swap(*this); 5149 return *this; 5150} 5151 5152template<class _Tp> 5153inline _LIBCPP_INLINE_VISIBILITY 5154void 5155weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT 5156{ 5157 _VSTD::swap(__ptr_, __r.__ptr_); 5158 _VSTD::swap(__cntrl_, __r.__cntrl_); 5159} 5160 5161template<class _Tp> 5162inline _LIBCPP_INLINE_VISIBILITY 5163void 5164swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT 5165{ 5166 __x.swap(__y); 5167} 5168 5169template<class _Tp> 5170inline _LIBCPP_INLINE_VISIBILITY 5171void 5172weak_ptr<_Tp>::reset() _NOEXCEPT 5173{ 5174 weak_ptr().swap(*this); 5175} 5176 5177template<class _Tp> 5178template<class _Yp> 5179shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, 5180 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 5181 : __ptr_(__r.__ptr_), 5182 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) 5183{ 5184 if (__cntrl_ == 0) 5185#ifndef _LIBCPP_NO_EXCEPTIONS 5186 throw bad_weak_ptr(); 5187#else 5188 assert(!"bad_weak_ptr"); 5189#endif 5190} 5191 5192template<class _Tp> 5193shared_ptr<_Tp> 5194weak_ptr<_Tp>::lock() const _NOEXCEPT 5195{ 5196 shared_ptr<_Tp> __r; 5197 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; 5198 if (__r.__cntrl_) 5199 __r.__ptr_ = __ptr_; 5200 return __r; 5201} 5202 5203template <class _Tp> struct owner_less; 5204 5205template <class _Tp> 5206struct _LIBCPP_TYPE_VIS_ONLY owner_less<shared_ptr<_Tp> > 5207 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> 5208{ 5209 typedef bool result_type; 5210 _LIBCPP_INLINE_VISIBILITY 5211 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5212 {return __x.owner_before(__y);} 5213 _LIBCPP_INLINE_VISIBILITY 5214 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5215 {return __x.owner_before(__y);} 5216 _LIBCPP_INLINE_VISIBILITY 5217 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5218 {return __x.owner_before(__y);} 5219}; 5220 5221template <class _Tp> 5222struct _LIBCPP_TYPE_VIS_ONLY owner_less<weak_ptr<_Tp> > 5223 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> 5224{ 5225 typedef bool result_type; 5226 _LIBCPP_INLINE_VISIBILITY 5227 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5228 {return __x.owner_before(__y);} 5229 _LIBCPP_INLINE_VISIBILITY 5230 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5231 {return __x.owner_before(__y);} 5232 _LIBCPP_INLINE_VISIBILITY 5233 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5234 {return __x.owner_before(__y);} 5235}; 5236 5237template<class _Tp> 5238class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this 5239{ 5240 mutable weak_ptr<_Tp> __weak_this_; 5241protected: 5242 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 5243 enable_shared_from_this() _NOEXCEPT {} 5244 _LIBCPP_INLINE_VISIBILITY 5245 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {} 5246 _LIBCPP_INLINE_VISIBILITY 5247 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT 5248 {return *this;} 5249 _LIBCPP_INLINE_VISIBILITY 5250 ~enable_shared_from_this() {} 5251public: 5252 _LIBCPP_INLINE_VISIBILITY 5253 shared_ptr<_Tp> shared_from_this() 5254 {return shared_ptr<_Tp>(__weak_this_);} 5255 _LIBCPP_INLINE_VISIBILITY 5256 shared_ptr<_Tp const> shared_from_this() const 5257 {return shared_ptr<const _Tp>(__weak_this_);} 5258 5259 template <class _Up> friend class shared_ptr; 5260}; 5261 5262template <class _Tp> 5263struct _LIBCPP_TYPE_VIS_ONLY hash<shared_ptr<_Tp> > 5264{ 5265 typedef shared_ptr<_Tp> argument_type; 5266 typedef size_t result_type; 5267 _LIBCPP_INLINE_VISIBILITY 5268 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 5269 { 5270 return hash<_Tp*>()(__ptr.get()); 5271 } 5272}; 5273 5274template<class _CharT, class _Traits, class _Yp> 5275inline _LIBCPP_INLINE_VISIBILITY 5276basic_ostream<_CharT, _Traits>& 5277operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p); 5278 5279#if __has_feature(cxx_atomic) && !defined(_LIBCPP_HAS_NO_THREADS) 5280 5281class _LIBCPP_TYPE_VIS __sp_mut 5282{ 5283 void* __lx; 5284public: 5285 void lock() _NOEXCEPT; 5286 void unlock() _NOEXCEPT; 5287 5288private: 5289 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT; 5290 __sp_mut(const __sp_mut&); 5291 __sp_mut& operator=(const __sp_mut&); 5292 5293 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5294}; 5295 5296_LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5297 5298template <class _Tp> 5299inline _LIBCPP_INLINE_VISIBILITY 5300bool 5301atomic_is_lock_free(const shared_ptr<_Tp>*) 5302{ 5303 return false; 5304} 5305 5306template <class _Tp> 5307shared_ptr<_Tp> 5308atomic_load(const shared_ptr<_Tp>* __p) 5309{ 5310 __sp_mut& __m = __get_sp_mut(__p); 5311 __m.lock(); 5312 shared_ptr<_Tp> __q = *__p; 5313 __m.unlock(); 5314 return __q; 5315} 5316 5317template <class _Tp> 5318inline _LIBCPP_INLINE_VISIBILITY 5319shared_ptr<_Tp> 5320atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) 5321{ 5322 return atomic_load(__p); 5323} 5324 5325template <class _Tp> 5326void 5327atomic_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 5335template <class _Tp> 5336inline _LIBCPP_INLINE_VISIBILITY 5337void 5338atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5339{ 5340 atomic_store(__p, __r); 5341} 5342 5343template <class _Tp> 5344shared_ptr<_Tp> 5345atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5346{ 5347 __sp_mut& __m = __get_sp_mut(__p); 5348 __m.lock(); 5349 __p->swap(__r); 5350 __m.unlock(); 5351 return __r; 5352} 5353 5354template <class _Tp> 5355inline _LIBCPP_INLINE_VISIBILITY 5356shared_ptr<_Tp> 5357atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5358{ 5359 return atomic_exchange(__p, __r); 5360} 5361 5362template <class _Tp> 5363bool 5364atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5365{ 5366 __sp_mut& __m = __get_sp_mut(__p); 5367 __m.lock(); 5368 if (__p->__owner_equivalent(*__v)) 5369 { 5370 *__p = __w; 5371 __m.unlock(); 5372 return true; 5373 } 5374 *__v = *__p; 5375 __m.unlock(); 5376 return false; 5377} 5378 5379template <class _Tp> 5380inline _LIBCPP_INLINE_VISIBILITY 5381bool 5382atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5383{ 5384 return atomic_compare_exchange_strong(__p, __v, __w); 5385} 5386 5387template <class _Tp> 5388inline _LIBCPP_INLINE_VISIBILITY 5389bool 5390atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5391 shared_ptr<_Tp> __w, memory_order, memory_order) 5392{ 5393 return atomic_compare_exchange_strong(__p, __v, __w); 5394} 5395 5396template <class _Tp> 5397inline _LIBCPP_INLINE_VISIBILITY 5398bool 5399atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5400 shared_ptr<_Tp> __w, memory_order, memory_order) 5401{ 5402 return atomic_compare_exchange_weak(__p, __v, __w); 5403} 5404 5405#endif // __has_feature(cxx_atomic) && !defined(_LIBCPP_HAS_NO_THREADS) 5406 5407//enum class 5408struct _LIBCPP_TYPE_VIS pointer_safety 5409{ 5410 enum __lx 5411 { 5412 relaxed, 5413 preferred, 5414 strict 5415 }; 5416 5417 __lx __v_; 5418 5419 _LIBCPP_INLINE_VISIBILITY 5420 pointer_safety(__lx __v) : __v_(__v) {} 5421 _LIBCPP_INLINE_VISIBILITY 5422 operator int() const {return __v_;} 5423}; 5424 5425_LIBCPP_FUNC_VIS void declare_reachable(void* __p); 5426_LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n); 5427_LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n); 5428_LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT; 5429_LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p); 5430 5431template <class _Tp> 5432inline _LIBCPP_INLINE_VISIBILITY 5433_Tp* 5434undeclare_reachable(_Tp* __p) 5435{ 5436 return static_cast<_Tp*>(__undeclare_reachable(__p)); 5437} 5438 5439_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); 5440 5441_LIBCPP_END_NAMESPACE_STD 5442 5443#endif // _LIBCPP_MEMORY 5444