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