memory revision 300770
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 <cstring> 611#if defined(_LIBCPP_NO_EXCEPTIONS) 612 #include <cassert> 613#endif 614 615#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) 616# include <atomic> 617#endif 618 619#include <__undef_min_max> 620#include <__undef___deallocate> 621 622#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 623#pragma GCC system_header 624#endif 625 626_LIBCPP_BEGIN_NAMESPACE_STD 627 628template <class _ValueType> 629inline _LIBCPP_ALWAYS_INLINE 630_ValueType __libcpp_relaxed_load(_ValueType const* __value) { 631#if !defined(_LIBCPP_HAS_NO_THREADS) && \ 632 defined(__ATOMIC_RELAXED) && \ 633 (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407) 634 return __atomic_load_n(__value, __ATOMIC_RELAXED); 635#else 636 return *__value; 637#endif 638} 639 640// addressof moved to <__functional_base> 641 642template <class _Tp> class allocator; 643 644template <> 645class _LIBCPP_TYPE_VIS_ONLY allocator<void> 646{ 647public: 648 typedef void* pointer; 649 typedef const void* const_pointer; 650 typedef void value_type; 651 652 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 653}; 654 655template <> 656class _LIBCPP_TYPE_VIS_ONLY allocator<const void> 657{ 658public: 659 typedef const void* pointer; 660 typedef const void* const_pointer; 661 typedef const void value_type; 662 663 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 664}; 665 666// pointer_traits 667 668template <class _Tp> 669struct __has_element_type 670{ 671private: 672 struct __two {char __lx; char __lxx;}; 673 template <class _Up> static __two __test(...); 674 template <class _Up> static char __test(typename _Up::element_type* = 0); 675public: 676 static const bool value = sizeof(__test<_Tp>(0)) == 1; 677}; 678 679template <class _Ptr, bool = __has_element_type<_Ptr>::value> 680struct __pointer_traits_element_type; 681 682template <class _Ptr> 683struct __pointer_traits_element_type<_Ptr, true> 684{ 685 typedef typename _Ptr::element_type type; 686}; 687 688#ifndef _LIBCPP_HAS_NO_VARIADICS 689 690template <template <class, class...> class _Sp, class _Tp, class ..._Args> 691struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true> 692{ 693 typedef typename _Sp<_Tp, _Args...>::element_type type; 694}; 695 696template <template <class, class...> class _Sp, class _Tp, class ..._Args> 697struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false> 698{ 699 typedef _Tp type; 700}; 701 702#else // _LIBCPP_HAS_NO_VARIADICS 703 704template <template <class> class _Sp, class _Tp> 705struct __pointer_traits_element_type<_Sp<_Tp>, true> 706{ 707 typedef typename _Sp<_Tp>::element_type type; 708}; 709 710template <template <class> class _Sp, class _Tp> 711struct __pointer_traits_element_type<_Sp<_Tp>, false> 712{ 713 typedef _Tp type; 714}; 715 716template <template <class, class> class _Sp, class _Tp, class _A0> 717struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true> 718{ 719 typedef typename _Sp<_Tp, _A0>::element_type type; 720}; 721 722template <template <class, class> class _Sp, class _Tp, class _A0> 723struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false> 724{ 725 typedef _Tp type; 726}; 727 728template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 729struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true> 730{ 731 typedef typename _Sp<_Tp, _A0, _A1>::element_type type; 732}; 733 734template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 735struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false> 736{ 737 typedef _Tp type; 738}; 739 740template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 741 class _A1, class _A2> 742struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true> 743{ 744 typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type; 745}; 746 747template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 748 class _A1, class _A2> 749struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false> 750{ 751 typedef _Tp type; 752}; 753 754#endif // _LIBCPP_HAS_NO_VARIADICS 755 756template <class _Tp> 757struct __has_difference_type 758{ 759private: 760 struct __two {char __lx; char __lxx;}; 761 template <class _Up> static __two __test(...); 762 template <class _Up> static char __test(typename _Up::difference_type* = 0); 763public: 764 static const bool value = sizeof(__test<_Tp>(0)) == 1; 765}; 766 767template <class _Ptr, bool = __has_difference_type<_Ptr>::value> 768struct __pointer_traits_difference_type 769{ 770 typedef ptrdiff_t type; 771}; 772 773template <class _Ptr> 774struct __pointer_traits_difference_type<_Ptr, true> 775{ 776 typedef typename _Ptr::difference_type type; 777}; 778 779template <class _Tp, class _Up> 780struct __has_rebind 781{ 782private: 783 struct __two {char __lx; char __lxx;}; 784 template <class _Xp> static __two __test(...); 785 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0); 786public: 787 static const bool value = sizeof(__test<_Tp>(0)) == 1; 788}; 789 790template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 791struct __pointer_traits_rebind 792{ 793#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 794 typedef typename _Tp::template rebind<_Up> type; 795#else 796 typedef typename _Tp::template rebind<_Up>::other type; 797#endif 798}; 799 800#ifndef _LIBCPP_HAS_NO_VARIADICS 801 802template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 803struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true> 804{ 805#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 806 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type; 807#else 808 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type; 809#endif 810}; 811 812template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 813struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false> 814{ 815 typedef _Sp<_Up, _Args...> type; 816}; 817 818#else // _LIBCPP_HAS_NO_VARIADICS 819 820template <template <class> class _Sp, class _Tp, class _Up> 821struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true> 822{ 823#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 824 typedef typename _Sp<_Tp>::template rebind<_Up> type; 825#else 826 typedef typename _Sp<_Tp>::template rebind<_Up>::other type; 827#endif 828}; 829 830template <template <class> class _Sp, class _Tp, class _Up> 831struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false> 832{ 833 typedef _Sp<_Up> type; 834}; 835 836template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 837struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true> 838{ 839#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 840 typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type; 841#else 842 typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type; 843#endif 844}; 845 846template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 847struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false> 848{ 849 typedef _Sp<_Up, _A0> type; 850}; 851 852template <template <class, class, class> class _Sp, class _Tp, class _A0, 853 class _A1, class _Up> 854struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true> 855{ 856#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 857 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type; 858#else 859 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type; 860#endif 861}; 862 863template <template <class, class, class> class _Sp, class _Tp, class _A0, 864 class _A1, class _Up> 865struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false> 866{ 867 typedef _Sp<_Up, _A0, _A1> type; 868}; 869 870template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 871 class _A1, class _A2, class _Up> 872struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true> 873{ 874#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 875 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type; 876#else 877 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 878#endif 879}; 880 881template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 882 class _A1, class _A2, class _Up> 883struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false> 884{ 885 typedef _Sp<_Up, _A0, _A1, _A2> type; 886}; 887 888#endif // _LIBCPP_HAS_NO_VARIADICS 889 890template <class _Ptr> 891struct _LIBCPP_TYPE_VIS_ONLY pointer_traits 892{ 893 typedef _Ptr pointer; 894 typedef typename __pointer_traits_element_type<pointer>::type element_type; 895 typedef typename __pointer_traits_difference_type<pointer>::type difference_type; 896 897#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 898 template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type; 899#else 900 template <class _Up> struct rebind 901 {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;}; 902#endif // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 903 904private: 905 struct __nat {}; 906public: 907 _LIBCPP_INLINE_VISIBILITY 908 static pointer pointer_to(typename conditional<is_void<element_type>::value, 909 __nat, element_type>::type& __r) 910 {return pointer::pointer_to(__r);} 911}; 912 913template <class _Tp> 914struct _LIBCPP_TYPE_VIS_ONLY pointer_traits<_Tp*> 915{ 916 typedef _Tp* pointer; 917 typedef _Tp element_type; 918 typedef ptrdiff_t difference_type; 919 920#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 921 template <class _Up> using rebind = _Up*; 922#else 923 template <class _Up> struct rebind {typedef _Up* other;}; 924#endif 925 926private: 927 struct __nat {}; 928public: 929 _LIBCPP_INLINE_VISIBILITY 930 static pointer pointer_to(typename conditional<is_void<element_type>::value, 931 __nat, element_type>::type& __r) _NOEXCEPT 932 {return _VSTD::addressof(__r);} 933}; 934 935template <class _From, class _To> 936struct __rebind_pointer { 937#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 938 typedef typename pointer_traits<_From>::template rebind<_To> type; 939#else 940 typedef typename pointer_traits<_From>::template rebind<_To>::other type; 941#endif 942}; 943 944// allocator_traits 945 946namespace __has_pointer_type_imp 947{ 948 template <class _Up> static __two __test(...); 949 template <class _Up> static char __test(typename _Up::pointer* = 0); 950} 951 952template <class _Tp> 953struct __has_pointer_type 954 : public integral_constant<bool, sizeof(__has_pointer_type_imp::__test<_Tp>(0)) == 1> 955{ 956}; 957 958namespace __pointer_type_imp 959{ 960 961template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value> 962struct __pointer_type 963{ 964 typedef typename _Dp::pointer type; 965}; 966 967template <class _Tp, class _Dp> 968struct __pointer_type<_Tp, _Dp, false> 969{ 970 typedef _Tp* type; 971}; 972 973} // __pointer_type_imp 974 975template <class _Tp, class _Dp> 976struct __pointer_type 977{ 978 typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type; 979}; 980 981template <class _Tp> 982struct __has_const_pointer 983{ 984private: 985 struct __two {char __lx; char __lxx;}; 986 template <class _Up> static __two __test(...); 987 template <class _Up> static char __test(typename _Up::const_pointer* = 0); 988public: 989 static const bool value = sizeof(__test<_Tp>(0)) == 1; 990}; 991 992template <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value> 993struct __const_pointer 994{ 995 typedef typename _Alloc::const_pointer type; 996}; 997 998template <class _Tp, class _Ptr, class _Alloc> 999struct __const_pointer<_Tp, _Ptr, _Alloc, false> 1000{ 1001#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1002 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp> type; 1003#else 1004 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type; 1005#endif 1006}; 1007 1008template <class _Tp> 1009struct __has_void_pointer 1010{ 1011private: 1012 struct __two {char __lx; char __lxx;}; 1013 template <class _Up> static __two __test(...); 1014 template <class _Up> static char __test(typename _Up::void_pointer* = 0); 1015public: 1016 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1017}; 1018 1019template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value> 1020struct __void_pointer 1021{ 1022 typedef typename _Alloc::void_pointer type; 1023}; 1024 1025template <class _Ptr, class _Alloc> 1026struct __void_pointer<_Ptr, _Alloc, false> 1027{ 1028#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1029 typedef typename pointer_traits<_Ptr>::template rebind<void> type; 1030#else 1031 typedef typename pointer_traits<_Ptr>::template rebind<void>::other type; 1032#endif 1033}; 1034 1035template <class _Tp> 1036struct __has_const_void_pointer 1037{ 1038private: 1039 struct __two {char __lx; char __lxx;}; 1040 template <class _Up> static __two __test(...); 1041 template <class _Up> static char __test(typename _Up::const_void_pointer* = 0); 1042public: 1043 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1044}; 1045 1046template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value> 1047struct __const_void_pointer 1048{ 1049 typedef typename _Alloc::const_void_pointer type; 1050}; 1051 1052template <class _Ptr, class _Alloc> 1053struct __const_void_pointer<_Ptr, _Alloc, false> 1054{ 1055#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1056 typedef typename pointer_traits<_Ptr>::template rebind<const void> type; 1057#else 1058 typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type; 1059#endif 1060}; 1061 1062template <class _Tp> 1063inline _LIBCPP_INLINE_VISIBILITY 1064_Tp* 1065__to_raw_pointer(_Tp* __p) _NOEXCEPT 1066{ 1067 return __p; 1068} 1069 1070template <class _Pointer> 1071inline _LIBCPP_INLINE_VISIBILITY 1072typename pointer_traits<_Pointer>::element_type* 1073__to_raw_pointer(_Pointer __p) _NOEXCEPT 1074{ 1075 return _VSTD::__to_raw_pointer(__p.operator->()); 1076} 1077 1078template <class _Tp> 1079struct __has_size_type 1080{ 1081private: 1082 struct __two {char __lx; char __lxx;}; 1083 template <class _Up> static __two __test(...); 1084 template <class _Up> static char __test(typename _Up::size_type* = 0); 1085public: 1086 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1087}; 1088 1089template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value> 1090struct __size_type 1091{ 1092 typedef typename make_unsigned<_DiffType>::type type; 1093}; 1094 1095template <class _Alloc, class _DiffType> 1096struct __size_type<_Alloc, _DiffType, true> 1097{ 1098 typedef typename _Alloc::size_type type; 1099}; 1100 1101template <class _Tp> 1102struct __has_propagate_on_container_copy_assignment 1103{ 1104private: 1105 struct __two {char __lx; char __lxx;}; 1106 template <class _Up> static __two __test(...); 1107 template <class _Up> static char __test(typename _Up::propagate_on_container_copy_assignment* = 0); 1108public: 1109 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1110}; 1111 1112template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value> 1113struct __propagate_on_container_copy_assignment 1114{ 1115 typedef false_type type; 1116}; 1117 1118template <class _Alloc> 1119struct __propagate_on_container_copy_assignment<_Alloc, true> 1120{ 1121 typedef typename _Alloc::propagate_on_container_copy_assignment type; 1122}; 1123 1124template <class _Tp> 1125struct __has_propagate_on_container_move_assignment 1126{ 1127private: 1128 struct __two {char __lx; char __lxx;}; 1129 template <class _Up> static __two __test(...); 1130 template <class _Up> static char __test(typename _Up::propagate_on_container_move_assignment* = 0); 1131public: 1132 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1133}; 1134 1135template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value> 1136struct __propagate_on_container_move_assignment 1137{ 1138 typedef false_type type; 1139}; 1140 1141template <class _Alloc> 1142struct __propagate_on_container_move_assignment<_Alloc, true> 1143{ 1144 typedef typename _Alloc::propagate_on_container_move_assignment type; 1145}; 1146 1147template <class _Tp> 1148struct __has_propagate_on_container_swap 1149{ 1150private: 1151 struct __two {char __lx; char __lxx;}; 1152 template <class _Up> static __two __test(...); 1153 template <class _Up> static char __test(typename _Up::propagate_on_container_swap* = 0); 1154public: 1155 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1156}; 1157 1158template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value> 1159struct __propagate_on_container_swap 1160{ 1161 typedef false_type type; 1162}; 1163 1164template <class _Alloc> 1165struct __propagate_on_container_swap<_Alloc, true> 1166{ 1167 typedef typename _Alloc::propagate_on_container_swap type; 1168}; 1169 1170template <class _Tp> 1171struct __has_is_always_equal 1172{ 1173private: 1174 struct __two {char __lx; char __lxx;}; 1175 template <class _Up> static __two __test(...); 1176 template <class _Up> static char __test(typename _Up::is_always_equal* = 0); 1177public: 1178 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1179}; 1180 1181template <class _Alloc, bool = __has_is_always_equal<_Alloc>::value> 1182struct __is_always_equal 1183{ 1184 typedef typename _VSTD::is_empty<_Alloc>::type type; 1185}; 1186 1187template <class _Alloc> 1188struct __is_always_equal<_Alloc, true> 1189{ 1190 typedef typename _Alloc::is_always_equal type; 1191}; 1192 1193template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 1194struct __has_rebind_other 1195{ 1196private: 1197 struct __two {char __lx; char __lxx;}; 1198 template <class _Xp> static __two __test(...); 1199 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0); 1200public: 1201 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1202}; 1203 1204template <class _Tp, class _Up> 1205struct __has_rebind_other<_Tp, _Up, false> 1206{ 1207 static const bool value = false; 1208}; 1209 1210template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value> 1211struct __allocator_traits_rebind 1212{ 1213 typedef typename _Tp::template rebind<_Up>::other type; 1214}; 1215 1216#ifndef _LIBCPP_HAS_NO_VARIADICS 1217 1218template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1219struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true> 1220{ 1221 typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type; 1222}; 1223 1224template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1225struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false> 1226{ 1227 typedef _Alloc<_Up, _Args...> type; 1228}; 1229 1230#else // _LIBCPP_HAS_NO_VARIADICS 1231 1232template <template <class> class _Alloc, class _Tp, class _Up> 1233struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true> 1234{ 1235 typedef typename _Alloc<_Tp>::template rebind<_Up>::other type; 1236}; 1237 1238template <template <class> class _Alloc, class _Tp, class _Up> 1239struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false> 1240{ 1241 typedef _Alloc<_Up> type; 1242}; 1243 1244template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1245struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true> 1246{ 1247 typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type; 1248}; 1249 1250template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1251struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false> 1252{ 1253 typedef _Alloc<_Up, _A0> type; 1254}; 1255 1256template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1257 class _A1, class _Up> 1258struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true> 1259{ 1260 typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type; 1261}; 1262 1263template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1264 class _A1, class _Up> 1265struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false> 1266{ 1267 typedef _Alloc<_Up, _A0, _A1> type; 1268}; 1269 1270template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1271 class _A1, class _A2, class _Up> 1272struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true> 1273{ 1274 typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 1275}; 1276 1277template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1278 class _A1, class _A2, class _Up> 1279struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false> 1280{ 1281 typedef _Alloc<_Up, _A0, _A1, _A2> type; 1282}; 1283 1284#endif // _LIBCPP_HAS_NO_VARIADICS 1285 1286#ifndef _LIBCPP_HAS_NO_ADVANCED_SFINAE 1287 1288template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1289auto 1290__has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1291 -> decltype(__a.allocate(__sz, __p), true_type()); 1292 1293template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1294auto 1295__has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1296 -> false_type; 1297 1298template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1299struct __has_allocate_hint 1300 : integral_constant<bool, 1301 is_same< 1302 decltype(__has_allocate_hint_test(declval<_Alloc>(), 1303 declval<_SizeType>(), 1304 declval<_ConstVoidPtr>())), 1305 true_type>::value> 1306{ 1307}; 1308 1309#else // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1310 1311template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1312struct __has_allocate_hint 1313 : true_type 1314{ 1315}; 1316 1317#endif // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1318 1319#if !defined(_LIBCPP_HAS_NO_ADVANCED_SFINAE) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1320 1321template <class _Alloc, class _Tp, class ..._Args> 1322decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(), 1323 _VSTD::declval<_Args>()...), 1324 true_type()) 1325__has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args); 1326 1327template <class _Alloc, class _Pointer, class ..._Args> 1328false_type 1329__has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args); 1330 1331template <class _Alloc, class _Pointer, class ..._Args> 1332struct __has_construct 1333 : integral_constant<bool, 1334 is_same< 1335 decltype(__has_construct_test(declval<_Alloc>(), 1336 declval<_Pointer>(), 1337 declval<_Args>()...)), 1338 true_type>::value> 1339{ 1340}; 1341 1342template <class _Alloc, class _Pointer> 1343auto 1344__has_destroy_test(_Alloc&& __a, _Pointer&& __p) 1345 -> decltype(__a.destroy(__p), true_type()); 1346 1347template <class _Alloc, class _Pointer> 1348auto 1349__has_destroy_test(const _Alloc& __a, _Pointer&& __p) 1350 -> false_type; 1351 1352template <class _Alloc, class _Pointer> 1353struct __has_destroy 1354 : integral_constant<bool, 1355 is_same< 1356 decltype(__has_destroy_test(declval<_Alloc>(), 1357 declval<_Pointer>())), 1358 true_type>::value> 1359{ 1360}; 1361 1362template <class _Alloc> 1363auto 1364__has_max_size_test(_Alloc&& __a) 1365 -> decltype(__a.max_size(), true_type()); 1366 1367template <class _Alloc> 1368auto 1369__has_max_size_test(const volatile _Alloc& __a) 1370 -> false_type; 1371 1372template <class _Alloc> 1373struct __has_max_size 1374 : integral_constant<bool, 1375 is_same< 1376 decltype(__has_max_size_test(declval<_Alloc&>())), 1377 true_type>::value> 1378{ 1379}; 1380 1381template <class _Alloc> 1382auto 1383__has_select_on_container_copy_construction_test(_Alloc&& __a) 1384 -> decltype(__a.select_on_container_copy_construction(), true_type()); 1385 1386template <class _Alloc> 1387auto 1388__has_select_on_container_copy_construction_test(const volatile _Alloc& __a) 1389 -> false_type; 1390 1391template <class _Alloc> 1392struct __has_select_on_container_copy_construction 1393 : integral_constant<bool, 1394 is_same< 1395 decltype(__has_select_on_container_copy_construction_test(declval<_Alloc&>())), 1396 true_type>::value> 1397{ 1398}; 1399 1400#else // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1401 1402#ifndef _LIBCPP_HAS_NO_VARIADICS 1403 1404template <class _Alloc, class _Pointer, class ..._Args> 1405struct __has_construct 1406 : false_type 1407{ 1408}; 1409 1410#else // _LIBCPP_HAS_NO_VARIADICS 1411 1412template <class _Alloc, class _Pointer, class _Args> 1413struct __has_construct 1414 : false_type 1415{ 1416}; 1417 1418#endif // _LIBCPP_HAS_NO_VARIADICS 1419 1420template <class _Alloc, class _Pointer> 1421struct __has_destroy 1422 : false_type 1423{ 1424}; 1425 1426template <class _Alloc> 1427struct __has_max_size 1428 : true_type 1429{ 1430}; 1431 1432template <class _Alloc> 1433struct __has_select_on_container_copy_construction 1434 : false_type 1435{ 1436}; 1437 1438#endif // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1439 1440template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value> 1441struct __alloc_traits_difference_type 1442{ 1443 typedef typename pointer_traits<_Ptr>::difference_type type; 1444}; 1445 1446template <class _Alloc, class _Ptr> 1447struct __alloc_traits_difference_type<_Alloc, _Ptr, true> 1448{ 1449 typedef typename _Alloc::difference_type type; 1450}; 1451 1452template <class _Alloc> 1453struct _LIBCPP_TYPE_VIS_ONLY allocator_traits 1454{ 1455 typedef _Alloc allocator_type; 1456 typedef typename allocator_type::value_type value_type; 1457 1458 typedef typename __pointer_type<value_type, allocator_type>::type pointer; 1459 typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer; 1460 typedef typename __void_pointer<pointer, allocator_type>::type void_pointer; 1461 typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer; 1462 1463 typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type; 1464 typedef typename __size_type<allocator_type, difference_type>::type size_type; 1465 1466 typedef typename __propagate_on_container_copy_assignment<allocator_type>::type 1467 propagate_on_container_copy_assignment; 1468 typedef typename __propagate_on_container_move_assignment<allocator_type>::type 1469 propagate_on_container_move_assignment; 1470 typedef typename __propagate_on_container_swap<allocator_type>::type 1471 propagate_on_container_swap; 1472 typedef typename __is_always_equal<allocator_type>::type 1473 is_always_equal; 1474 1475#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1476 template <class _Tp> using rebind_alloc = 1477 typename __allocator_traits_rebind<allocator_type, _Tp>::type; 1478 template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>; 1479#else // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1480 template <class _Tp> struct rebind_alloc 1481 {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;}; 1482 template <class _Tp> struct rebind_traits 1483 {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;}; 1484#endif // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1485 1486 _LIBCPP_INLINE_VISIBILITY 1487 static pointer allocate(allocator_type& __a, size_type __n) 1488 {return __a.allocate(__n);} 1489 _LIBCPP_INLINE_VISIBILITY 1490 static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint) 1491 {return allocate(__a, __n, __hint, 1492 __has_allocate_hint<allocator_type, size_type, const_void_pointer>());} 1493 1494 _LIBCPP_INLINE_VISIBILITY 1495 static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT 1496 {__a.deallocate(__p, __n);} 1497 1498#ifndef _LIBCPP_HAS_NO_VARIADICS 1499 template <class _Tp, class... _Args> 1500 _LIBCPP_INLINE_VISIBILITY 1501 static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args) 1502 {__construct(__has_construct<allocator_type, _Tp*, _Args...>(), 1503 __a, __p, _VSTD::forward<_Args>(__args)...);} 1504#else // _LIBCPP_HAS_NO_VARIADICS 1505 template <class _Tp> 1506 _LIBCPP_INLINE_VISIBILITY 1507 static void construct(allocator_type& __a, _Tp* __p) 1508 { 1509 ::new ((void*)__p) _Tp(); 1510 } 1511 template <class _Tp, class _A0> 1512 _LIBCPP_INLINE_VISIBILITY 1513 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0) 1514 { 1515 ::new ((void*)__p) _Tp(__a0); 1516 } 1517 template <class _Tp, class _A0, class _A1> 1518 _LIBCPP_INLINE_VISIBILITY 1519 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0, 1520 const _A1& __a1) 1521 { 1522 ::new ((void*)__p) _Tp(__a0, __a1); 1523 } 1524 template <class _Tp, class _A0, class _A1, class _A2> 1525 _LIBCPP_INLINE_VISIBILITY 1526 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0, 1527 const _A1& __a1, const _A2& __a2) 1528 { 1529 ::new ((void*)__p) _Tp(__a0, __a1, __a2); 1530 } 1531#endif // _LIBCPP_HAS_NO_VARIADICS 1532 1533 template <class _Tp> 1534 _LIBCPP_INLINE_VISIBILITY 1535 static void destroy(allocator_type& __a, _Tp* __p) 1536 {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);} 1537 1538 _LIBCPP_INLINE_VISIBILITY 1539 static size_type max_size(const allocator_type& __a) _NOEXCEPT 1540 {return __max_size(__has_max_size<const allocator_type>(), __a);} 1541 1542 _LIBCPP_INLINE_VISIBILITY 1543 static allocator_type 1544 select_on_container_copy_construction(const allocator_type& __a) 1545 {return select_on_container_copy_construction( 1546 __has_select_on_container_copy_construction<const allocator_type>(), 1547 __a);} 1548 1549 template <class _Ptr> 1550 _LIBCPP_INLINE_VISIBILITY 1551 static 1552 void 1553 __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) 1554 { 1555 for (; __begin1 != __end1; ++__begin1, ++__begin2) 1556 construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1)); 1557 } 1558 1559 template <class _Tp> 1560 _LIBCPP_INLINE_VISIBILITY 1561 static 1562 typename enable_if 1563 < 1564 (is_same<allocator_type, allocator<_Tp> >::value 1565 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1566 is_trivially_move_constructible<_Tp>::value, 1567 void 1568 >::type 1569 __construct_forward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1570 { 1571 ptrdiff_t _Np = __end1 - __begin1; 1572 if (_Np > 0) 1573 { 1574 _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp)); 1575 __begin2 += _Np; 1576 } 1577 } 1578 1579 template <class _Iter, class _Ptr> 1580 _LIBCPP_INLINE_VISIBILITY 1581 static 1582 void 1583 __construct_range_forward(allocator_type& __a, _Iter __begin1, _Iter __end1, _Ptr& __begin2) 1584 { 1585 for (; __begin1 != __end1; ++__begin1, (void) ++__begin2) 1586 construct(__a, _VSTD::__to_raw_pointer(__begin2), *__begin1); 1587 } 1588 1589 template <class _Tp> 1590 _LIBCPP_INLINE_VISIBILITY 1591 static 1592 typename enable_if 1593 < 1594 (is_same<allocator_type, allocator<_Tp> >::value 1595 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1596 is_trivially_move_constructible<_Tp>::value, 1597 void 1598 >::type 1599 __construct_range_forward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1600 { 1601 typedef typename remove_const<_Tp>::type _Vp; 1602 ptrdiff_t _Np = __end1 - __begin1; 1603 if (_Np > 0) 1604 { 1605 _VSTD::memcpy(const_cast<_Vp*>(__begin2), __begin1, _Np * sizeof(_Tp)); 1606 __begin2 += _Np; 1607 } 1608 } 1609 1610 template <class _Ptr> 1611 _LIBCPP_INLINE_VISIBILITY 1612 static 1613 void 1614 __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2) 1615 { 1616 while (__end1 != __begin1) 1617 { 1618 construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1)); 1619 --__end2; 1620 } 1621 } 1622 1623 template <class _Tp> 1624 _LIBCPP_INLINE_VISIBILITY 1625 static 1626 typename enable_if 1627 < 1628 (is_same<allocator_type, allocator<_Tp> >::value 1629 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1630 is_trivially_move_constructible<_Tp>::value, 1631 void 1632 >::type 1633 __construct_backward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __end2) 1634 { 1635 ptrdiff_t _Np = __end1 - __begin1; 1636 __end2 -= _Np; 1637 if (_Np > 0) 1638 _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp)); 1639 } 1640 1641private: 1642 1643 _LIBCPP_INLINE_VISIBILITY 1644 static pointer allocate(allocator_type& __a, size_type __n, 1645 const_void_pointer __hint, true_type) 1646 {return __a.allocate(__n, __hint);} 1647 _LIBCPP_INLINE_VISIBILITY 1648 static pointer allocate(allocator_type& __a, size_type __n, 1649 const_void_pointer, false_type) 1650 {return __a.allocate(__n);} 1651 1652#ifndef _LIBCPP_HAS_NO_VARIADICS 1653 template <class _Tp, class... _Args> 1654 _LIBCPP_INLINE_VISIBILITY 1655 static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args) 1656 {__a.construct(__p, _VSTD::forward<_Args>(__args)...);} 1657 template <class _Tp, class... _Args> 1658 _LIBCPP_INLINE_VISIBILITY 1659 static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args) 1660 { 1661 ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...); 1662 } 1663#endif // _LIBCPP_HAS_NO_VARIADICS 1664 1665 template <class _Tp> 1666 _LIBCPP_INLINE_VISIBILITY 1667 static void __destroy(true_type, allocator_type& __a, _Tp* __p) 1668 {__a.destroy(__p);} 1669 template <class _Tp> 1670 _LIBCPP_INLINE_VISIBILITY 1671 static void __destroy(false_type, allocator_type&, _Tp* __p) 1672 { 1673 __p->~_Tp(); 1674 } 1675 1676 _LIBCPP_INLINE_VISIBILITY 1677 static size_type __max_size(true_type, const allocator_type& __a) 1678 {return __a.max_size();} 1679 _LIBCPP_INLINE_VISIBILITY 1680 static size_type __max_size(false_type, const allocator_type&) 1681 {return numeric_limits<size_type>::max() / sizeof(value_type);} 1682 1683 _LIBCPP_INLINE_VISIBILITY 1684 static allocator_type 1685 select_on_container_copy_construction(true_type, const allocator_type& __a) 1686 {return __a.select_on_container_copy_construction();} 1687 _LIBCPP_INLINE_VISIBILITY 1688 static allocator_type 1689 select_on_container_copy_construction(false_type, const allocator_type& __a) 1690 {return __a;} 1691}; 1692 1693template <class _Traits, class _Tp> 1694struct __rebind_alloc_helper 1695{ 1696#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1697 typedef typename _Traits::template rebind_alloc<_Tp> type; 1698#else 1699 typedef typename _Traits::template rebind_alloc<_Tp>::other type; 1700#endif 1701}; 1702 1703// allocator 1704 1705template <class _Tp> 1706class _LIBCPP_TYPE_VIS_ONLY allocator 1707{ 1708public: 1709 typedef size_t size_type; 1710 typedef ptrdiff_t difference_type; 1711 typedef _Tp* pointer; 1712 typedef const _Tp* const_pointer; 1713 typedef _Tp& reference; 1714 typedef const _Tp& const_reference; 1715 typedef _Tp value_type; 1716 1717 typedef true_type propagate_on_container_move_assignment; 1718 typedef true_type is_always_equal; 1719 1720 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1721 1722 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1723 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1724 _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT 1725 {return _VSTD::addressof(__x);} 1726 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1727 {return _VSTD::addressof(__x);} 1728 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1729 {return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp)));} 1730 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1731 {_VSTD::__deallocate((void*)__p);} 1732 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1733 {return size_type(~0) / sizeof(_Tp);} 1734#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1735 template <class _Up, class... _Args> 1736 _LIBCPP_INLINE_VISIBILITY 1737 void 1738 construct(_Up* __p, _Args&&... __args) 1739 { 1740 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1741 } 1742#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1743 _LIBCPP_INLINE_VISIBILITY 1744 void 1745 construct(pointer __p) 1746 { 1747 ::new((void*)__p) _Tp(); 1748 } 1749# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1750 1751 template <class _A0> 1752 _LIBCPP_INLINE_VISIBILITY 1753 void 1754 construct(pointer __p, _A0& __a0) 1755 { 1756 ::new((void*)__p) _Tp(__a0); 1757 } 1758 template <class _A0> 1759 _LIBCPP_INLINE_VISIBILITY 1760 void 1761 construct(pointer __p, const _A0& __a0) 1762 { 1763 ::new((void*)__p) _Tp(__a0); 1764 } 1765# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1766 template <class _A0, class _A1> 1767 _LIBCPP_INLINE_VISIBILITY 1768 void 1769 construct(pointer __p, _A0& __a0, _A1& __a1) 1770 { 1771 ::new((void*)__p) _Tp(__a0, __a1); 1772 } 1773 template <class _A0, class _A1> 1774 _LIBCPP_INLINE_VISIBILITY 1775 void 1776 construct(pointer __p, const _A0& __a0, _A1& __a1) 1777 { 1778 ::new((void*)__p) _Tp(__a0, __a1); 1779 } 1780 template <class _A0, class _A1> 1781 _LIBCPP_INLINE_VISIBILITY 1782 void 1783 construct(pointer __p, _A0& __a0, const _A1& __a1) 1784 { 1785 ::new((void*)__p) _Tp(__a0, __a1); 1786 } 1787 template <class _A0, class _A1> 1788 _LIBCPP_INLINE_VISIBILITY 1789 void 1790 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1791 { 1792 ::new((void*)__p) _Tp(__a0, __a1); 1793 } 1794#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1795 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1796}; 1797 1798template <class _Tp> 1799class _LIBCPP_TYPE_VIS_ONLY allocator<const _Tp> 1800{ 1801public: 1802 typedef size_t size_type; 1803 typedef ptrdiff_t difference_type; 1804 typedef const _Tp* pointer; 1805 typedef const _Tp* const_pointer; 1806 typedef const _Tp& reference; 1807 typedef const _Tp& const_reference; 1808 typedef const _Tp value_type; 1809 1810 typedef true_type propagate_on_container_move_assignment; 1811 typedef true_type is_always_equal; 1812 1813 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1814 1815 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1816 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1817 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1818 {return _VSTD::addressof(__x);} 1819 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1820 {return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp)));} 1821 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1822 {_VSTD::__deallocate((void*)__p);} 1823 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1824 {return size_type(~0) / sizeof(_Tp);} 1825#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1826 template <class _Up, class... _Args> 1827 _LIBCPP_INLINE_VISIBILITY 1828 void 1829 construct(_Up* __p, _Args&&... __args) 1830 { 1831 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1832 } 1833#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1834 _LIBCPP_INLINE_VISIBILITY 1835 void 1836 construct(pointer __p) 1837 { 1838 ::new((void*)__p) _Tp(); 1839 } 1840# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1841 1842 template <class _A0> 1843 _LIBCPP_INLINE_VISIBILITY 1844 void 1845 construct(pointer __p, _A0& __a0) 1846 { 1847 ::new((void*)__p) _Tp(__a0); 1848 } 1849 template <class _A0> 1850 _LIBCPP_INLINE_VISIBILITY 1851 void 1852 construct(pointer __p, const _A0& __a0) 1853 { 1854 ::new((void*)__p) _Tp(__a0); 1855 } 1856# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1857 template <class _A0, class _A1> 1858 _LIBCPP_INLINE_VISIBILITY 1859 void 1860 construct(pointer __p, _A0& __a0, _A1& __a1) 1861 { 1862 ::new((void*)__p) _Tp(__a0, __a1); 1863 } 1864 template <class _A0, class _A1> 1865 _LIBCPP_INLINE_VISIBILITY 1866 void 1867 construct(pointer __p, const _A0& __a0, _A1& __a1) 1868 { 1869 ::new((void*)__p) _Tp(__a0, __a1); 1870 } 1871 template <class _A0, class _A1> 1872 _LIBCPP_INLINE_VISIBILITY 1873 void 1874 construct(pointer __p, _A0& __a0, const _A1& __a1) 1875 { 1876 ::new((void*)__p) _Tp(__a0, __a1); 1877 } 1878 template <class _A0, class _A1> 1879 _LIBCPP_INLINE_VISIBILITY 1880 void 1881 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1882 { 1883 ::new((void*)__p) _Tp(__a0, __a1); 1884 } 1885#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1886 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1887}; 1888 1889template <class _Tp, class _Up> 1890inline _LIBCPP_INLINE_VISIBILITY 1891bool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;} 1892 1893template <class _Tp, class _Up> 1894inline _LIBCPP_INLINE_VISIBILITY 1895bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;} 1896 1897template <class _OutputIterator, class _Tp> 1898class _LIBCPP_TYPE_VIS_ONLY raw_storage_iterator 1899 : public iterator<output_iterator_tag, 1900 _Tp, // purposefully not C++03 1901 ptrdiff_t, // purposefully not C++03 1902 _Tp*, // purposefully not C++03 1903 raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03 1904{ 1905private: 1906 _OutputIterator __x_; 1907public: 1908 _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} 1909 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;} 1910 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element) 1911 {::new(&*__x_) _Tp(__element); return *this;} 1912#if _LIBCPP_STD_VER >= 14 1913 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element) 1914 {::new(&*__x_) _Tp(_VSTD::move(__element)); return *this;} 1915#endif 1916 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;} 1917 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int) 1918 {raw_storage_iterator __t(*this); ++__x_; return __t;} 1919#if _LIBCPP_STD_VER >= 14 1920 _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; } 1921#endif 1922}; 1923 1924template <class _Tp> 1925pair<_Tp*, ptrdiff_t> 1926get_temporary_buffer(ptrdiff_t __n) _NOEXCEPT 1927{ 1928 pair<_Tp*, ptrdiff_t> __r(0, 0); 1929 const ptrdiff_t __m = (~ptrdiff_t(0) ^ 1930 ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1))) 1931 / sizeof(_Tp); 1932 if (__n > __m) 1933 __n = __m; 1934 while (__n > 0) 1935 { 1936 __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow)); 1937 if (__r.first) 1938 { 1939 __r.second = __n; 1940 break; 1941 } 1942 __n /= 2; 1943 } 1944 return __r; 1945} 1946 1947template <class _Tp> 1948inline _LIBCPP_INLINE_VISIBILITY 1949void return_temporary_buffer(_Tp* __p) _NOEXCEPT {::operator delete(__p);} 1950 1951template <class _Tp> 1952struct auto_ptr_ref 1953{ 1954 _Tp* __ptr_; 1955}; 1956 1957template<class _Tp> 1958class _LIBCPP_TYPE_VIS_ONLY auto_ptr 1959{ 1960private: 1961 _Tp* __ptr_; 1962public: 1963 typedef _Tp element_type; 1964 1965 _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {} 1966 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {} 1967 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw() 1968 : __ptr_(__p.release()) {} 1969 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw() 1970 {reset(__p.release()); return *this;} 1971 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw() 1972 {reset(__p.release()); return *this;} 1973 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw() 1974 {reset(__p.__ptr_); return *this;} 1975 _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;} 1976 1977 _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw() 1978 {return *__ptr_;} 1979 _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;} 1980 _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;} 1981 _LIBCPP_INLINE_VISIBILITY _Tp* release() throw() 1982 { 1983 _Tp* __t = __ptr_; 1984 __ptr_ = 0; 1985 return __t; 1986 } 1987 _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw() 1988 { 1989 if (__ptr_ != __p) 1990 delete __ptr_; 1991 __ptr_ = __p; 1992 } 1993 1994 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {} 1995 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw() 1996 {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;} 1997 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw() 1998 {return auto_ptr<_Up>(release());} 1999}; 2000 2001template <> 2002class _LIBCPP_TYPE_VIS_ONLY auto_ptr<void> 2003{ 2004public: 2005 typedef void element_type; 2006}; 2007 2008template <class _T1, class _T2, bool = is_same<typename remove_cv<_T1>::type, 2009 typename remove_cv<_T2>::type>::value, 2010 bool = is_empty<_T1>::value 2011 && !__libcpp_is_final<_T1>::value, 2012 bool = is_empty<_T2>::value 2013 && !__libcpp_is_final<_T2>::value 2014 > 2015struct __libcpp_compressed_pair_switch; 2016 2017template <class _T1, class _T2, bool IsSame> 2018struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, false> {enum {value = 0};}; 2019 2020template <class _T1, class _T2, bool IsSame> 2021struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, true, false> {enum {value = 1};}; 2022 2023template <class _T1, class _T2, bool IsSame> 2024struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, true> {enum {value = 2};}; 2025 2026template <class _T1, class _T2> 2027struct __libcpp_compressed_pair_switch<_T1, _T2, false, true, true> {enum {value = 3};}; 2028 2029template <class _T1, class _T2> 2030struct __libcpp_compressed_pair_switch<_T1, _T2, true, true, true> {enum {value = 1};}; 2031 2032template <class _T1, class _T2, unsigned = __libcpp_compressed_pair_switch<_T1, _T2>::value> 2033class __libcpp_compressed_pair_imp; 2034 2035template <class _T1, class _T2> 2036class __libcpp_compressed_pair_imp<_T1, _T2, 0> 2037{ 2038private: 2039 _T1 __first_; 2040 _T2 __second_; 2041public: 2042 typedef _T1 _T1_param; 2043 typedef _T2 _T2_param; 2044 2045 typedef typename remove_reference<_T1>::type& _T1_reference; 2046 typedef typename remove_reference<_T2>::type& _T2_reference; 2047 2048 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 2049 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 2050 2051 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __first_(), __second_() {} 2052 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2053 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_() {} 2054 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2055 : __first_(), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2056 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2057 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2058 2059#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2060 2061 _LIBCPP_INLINE_VISIBILITY 2062 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2063 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2064 is_nothrow_copy_constructible<_T2>::value) 2065 : __first_(__p.first()), 2066 __second_(__p.second()) {} 2067 2068 _LIBCPP_INLINE_VISIBILITY 2069 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2070 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2071 is_nothrow_copy_assignable<_T2>::value) 2072 { 2073 __first_ = __p.first(); 2074 __second_ = __p.second(); 2075 return *this; 2076 } 2077 2078 _LIBCPP_INLINE_VISIBILITY 2079 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2080 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2081 is_nothrow_move_constructible<_T2>::value) 2082 : __first_(_VSTD::forward<_T1>(__p.first())), 2083 __second_(_VSTD::forward<_T2>(__p.second())) {} 2084 2085 _LIBCPP_INLINE_VISIBILITY 2086 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2087 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2088 is_nothrow_move_assignable<_T2>::value) 2089 { 2090 __first_ = _VSTD::forward<_T1>(__p.first()); 2091 __second_ = _VSTD::forward<_T2>(__p.second()); 2092 return *this; 2093 } 2094 2095#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2096 2097#ifndef _LIBCPP_HAS_NO_VARIADICS 2098 2099 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2100 _LIBCPP_INLINE_VISIBILITY 2101 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2102 tuple<_Args1...> __first_args, 2103 tuple<_Args2...> __second_args, 2104 __tuple_indices<_I1...>, 2105 __tuple_indices<_I2...>) 2106 : __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2107 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2108 {} 2109 2110#endif // _LIBCPP_HAS_NO_VARIADICS 2111 2112 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2113 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2114 2115 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2116 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2117 2118 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2119 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2120 __is_nothrow_swappable<_T2>::value) 2121 { 2122 using _VSTD::swap; 2123 swap(__first_, __x.__first_); 2124 swap(__second_, __x.__second_); 2125 } 2126}; 2127 2128template <class _T1, class _T2> 2129class __libcpp_compressed_pair_imp<_T1, _T2, 1> 2130 : private _T1 2131{ 2132private: 2133 _T2 __second_; 2134public: 2135 typedef _T1 _T1_param; 2136 typedef _T2 _T2_param; 2137 2138 typedef _T1& _T1_reference; 2139 typedef typename remove_reference<_T2>::type& _T2_reference; 2140 2141 typedef const _T1& _T1_const_reference; 2142 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 2143 2144 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __second_() {} 2145 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2146 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_() {} 2147 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2148 : __second_(_VSTD::forward<_T2_param>(__t2)) {} 2149 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2150 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2151 2152#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2153 2154 _LIBCPP_INLINE_VISIBILITY 2155 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2156 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2157 is_nothrow_copy_constructible<_T2>::value) 2158 : _T1(__p.first()), __second_(__p.second()) {} 2159 2160 _LIBCPP_INLINE_VISIBILITY 2161 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2162 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2163 is_nothrow_copy_assignable<_T2>::value) 2164 { 2165 _T1::operator=(__p.first()); 2166 __second_ = __p.second(); 2167 return *this; 2168 } 2169 2170 _LIBCPP_INLINE_VISIBILITY 2171 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2172 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2173 is_nothrow_move_constructible<_T2>::value) 2174 : _T1(_VSTD::move(__p.first())), __second_(_VSTD::forward<_T2>(__p.second())) {} 2175 2176 _LIBCPP_INLINE_VISIBILITY 2177 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2178 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2179 is_nothrow_move_assignable<_T2>::value) 2180 { 2181 _T1::operator=(_VSTD::move(__p.first())); 2182 __second_ = _VSTD::forward<_T2>(__p.second()); 2183 return *this; 2184 } 2185 2186#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2187 2188#ifndef _LIBCPP_HAS_NO_VARIADICS 2189 2190 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2191 _LIBCPP_INLINE_VISIBILITY 2192 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2193 tuple<_Args1...> __first_args, 2194 tuple<_Args2...> __second_args, 2195 __tuple_indices<_I1...>, 2196 __tuple_indices<_I2...>) 2197 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2198 __second_(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2199 {} 2200 2201#endif // _LIBCPP_HAS_NO_VARIADICS 2202 2203 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2204 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2205 2206 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2207 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2208 2209 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2210 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2211 __is_nothrow_swappable<_T2>::value) 2212 { 2213 using _VSTD::swap; 2214 swap(__second_, __x.__second_); 2215 } 2216}; 2217 2218template <class _T1, class _T2> 2219class __libcpp_compressed_pair_imp<_T1, _T2, 2> 2220 : private _T2 2221{ 2222private: 2223 _T1 __first_; 2224public: 2225 typedef _T1 _T1_param; 2226 typedef _T2 _T2_param; 2227 2228 typedef typename remove_reference<_T1>::type& _T1_reference; 2229 typedef _T2& _T2_reference; 2230 2231 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 2232 typedef const _T2& _T2_const_reference; 2233 2234 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() : __first_() {} 2235 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2236 : __first_(_VSTD::forward<_T1_param>(__t1)) {} 2237 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2238 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_() {} 2239 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2240 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2241 is_nothrow_move_constructible<_T2>::value) 2242 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_(_VSTD::forward<_T1_param>(__t1)) {} 2243 2244#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2245 2246 _LIBCPP_INLINE_VISIBILITY 2247 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2248 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2249 is_nothrow_copy_constructible<_T2>::value) 2250 : _T2(__p.second()), __first_(__p.first()) {} 2251 2252 _LIBCPP_INLINE_VISIBILITY 2253 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2254 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2255 is_nothrow_copy_assignable<_T2>::value) 2256 { 2257 _T2::operator=(__p.second()); 2258 __first_ = __p.first(); 2259 return *this; 2260 } 2261 2262 _LIBCPP_INLINE_VISIBILITY 2263 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2264 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2265 is_nothrow_move_constructible<_T2>::value) 2266 : _T2(_VSTD::forward<_T2>(__p.second())), __first_(_VSTD::move(__p.first())) {} 2267 2268 _LIBCPP_INLINE_VISIBILITY 2269 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2270 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2271 is_nothrow_move_assignable<_T2>::value) 2272 { 2273 _T2::operator=(_VSTD::forward<_T2>(__p.second())); 2274 __first_ = _VSTD::move(__p.first()); 2275 return *this; 2276 } 2277 2278#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2279 2280#ifndef _LIBCPP_HAS_NO_VARIADICS 2281 2282 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2283 _LIBCPP_INLINE_VISIBILITY 2284 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2285 tuple<_Args1...> __first_args, 2286 tuple<_Args2...> __second_args, 2287 __tuple_indices<_I1...>, 2288 __tuple_indices<_I2...>) 2289 : _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...), 2290 __first_(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...) 2291 2292 {} 2293 2294#endif // _LIBCPP_HAS_NO_VARIADICS 2295 2296 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2297 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2298 2299 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2300 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2301 2302 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2303 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2304 __is_nothrow_swappable<_T2>::value) 2305 { 2306 using _VSTD::swap; 2307 swap(__first_, __x.__first_); 2308 } 2309}; 2310 2311template <class _T1, class _T2> 2312class __libcpp_compressed_pair_imp<_T1, _T2, 3> 2313 : private _T1, 2314 private _T2 2315{ 2316public: 2317 typedef _T1 _T1_param; 2318 typedef _T2 _T2_param; 2319 2320 typedef _T1& _T1_reference; 2321 typedef _T2& _T2_reference; 2322 2323 typedef const _T1& _T1_const_reference; 2324 typedef const _T2& _T2_const_reference; 2325 2326 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2327 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2328 : _T1(_VSTD::forward<_T1_param>(__t1)) {} 2329 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2330 : _T2(_VSTD::forward<_T2_param>(__t2)) {} 2331 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2332 : _T1(_VSTD::forward<_T1_param>(__t1)), _T2(_VSTD::forward<_T2_param>(__t2)) {} 2333 2334#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2335 2336 _LIBCPP_INLINE_VISIBILITY 2337 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2338 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2339 is_nothrow_copy_constructible<_T2>::value) 2340 : _T1(__p.first()), _T2(__p.second()) {} 2341 2342 _LIBCPP_INLINE_VISIBILITY 2343 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2344 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2345 is_nothrow_copy_assignable<_T2>::value) 2346 { 2347 _T1::operator=(__p.first()); 2348 _T2::operator=(__p.second()); 2349 return *this; 2350 } 2351 2352 _LIBCPP_INLINE_VISIBILITY 2353 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2354 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2355 is_nothrow_move_constructible<_T2>::value) 2356 : _T1(_VSTD::move(__p.first())), _T2(_VSTD::move(__p.second())) {} 2357 2358 _LIBCPP_INLINE_VISIBILITY 2359 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2360 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2361 is_nothrow_move_assignable<_T2>::value) 2362 { 2363 _T1::operator=(_VSTD::move(__p.first())); 2364 _T2::operator=(_VSTD::move(__p.second())); 2365 return *this; 2366 } 2367 2368#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2369 2370#ifndef _LIBCPP_HAS_NO_VARIADICS 2371 2372 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2373 _LIBCPP_INLINE_VISIBILITY 2374 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2375 tuple<_Args1...> __first_args, 2376 tuple<_Args2...> __second_args, 2377 __tuple_indices<_I1...>, 2378 __tuple_indices<_I2...>) 2379 : _T1(_VSTD::forward<_Args1>(_VSTD::get<_I1>(__first_args))...), 2380 _T2(_VSTD::forward<_Args2>(_VSTD::get<_I2>(__second_args))...) 2381 {} 2382 2383#endif // _LIBCPP_HAS_NO_VARIADICS 2384 2385 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2386 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2387 2388 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2389 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2390 2391 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp&) 2392 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2393 __is_nothrow_swappable<_T2>::value) 2394 { 2395 } 2396}; 2397 2398template <class _T1, class _T2> 2399class __compressed_pair 2400 : private __libcpp_compressed_pair_imp<_T1, _T2> 2401{ 2402 typedef __libcpp_compressed_pair_imp<_T1, _T2> base; 2403public: 2404 typedef typename base::_T1_param _T1_param; 2405 typedef typename base::_T2_param _T2_param; 2406 2407 typedef typename base::_T1_reference _T1_reference; 2408 typedef typename base::_T2_reference _T2_reference; 2409 2410 typedef typename base::_T1_const_reference _T1_const_reference; 2411 typedef typename base::_T2_const_reference _T2_const_reference; 2412 2413 _LIBCPP_INLINE_VISIBILITY __compressed_pair() {} 2414 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T1_param __t1) 2415 : base(_VSTD::forward<_T1_param>(__t1)) {} 2416 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T2_param __t2) 2417 : base(_VSTD::forward<_T2_param>(__t2)) {} 2418 _LIBCPP_INLINE_VISIBILITY __compressed_pair(_T1_param __t1, _T2_param __t2) 2419 : base(_VSTD::forward<_T1_param>(__t1), _VSTD::forward<_T2_param>(__t2)) {} 2420 2421#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2422 2423 _LIBCPP_INLINE_VISIBILITY 2424 __compressed_pair(const __compressed_pair& __p) 2425 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2426 is_nothrow_copy_constructible<_T2>::value) 2427 : base(__p) {} 2428 2429 _LIBCPP_INLINE_VISIBILITY 2430 __compressed_pair& operator=(const __compressed_pair& __p) 2431 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2432 is_nothrow_copy_assignable<_T2>::value) 2433 { 2434 base::operator=(__p); 2435 return *this; 2436 } 2437 2438 _LIBCPP_INLINE_VISIBILITY 2439 __compressed_pair(__compressed_pair&& __p) 2440 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2441 is_nothrow_move_constructible<_T2>::value) 2442 : base(_VSTD::move(__p)) {} 2443 2444 _LIBCPP_INLINE_VISIBILITY 2445 __compressed_pair& operator=(__compressed_pair&& __p) 2446 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2447 is_nothrow_move_assignable<_T2>::value) 2448 { 2449 base::operator=(_VSTD::move(__p)); 2450 return *this; 2451 } 2452 2453#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2454 2455#ifndef _LIBCPP_HAS_NO_VARIADICS 2456 2457 template <class... _Args1, class... _Args2> 2458 _LIBCPP_INLINE_VISIBILITY 2459 __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args, 2460 tuple<_Args2...> __second_args) 2461 : base(__pc, _VSTD::move(__first_args), _VSTD::move(__second_args), 2462 typename __make_tuple_indices<sizeof...(_Args1)>::type(), 2463 typename __make_tuple_indices<sizeof...(_Args2) >::type()) 2464 {} 2465 2466#endif // _LIBCPP_HAS_NO_VARIADICS 2467 2468 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return base::first();} 2469 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return base::first();} 2470 2471 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return base::second();} 2472 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return base::second();} 2473 2474 _LIBCPP_INLINE_VISIBILITY void swap(__compressed_pair& __x) 2475 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2476 __is_nothrow_swappable<_T2>::value) 2477 {base::swap(__x);} 2478}; 2479 2480template <class _T1, class _T2> 2481inline _LIBCPP_INLINE_VISIBILITY 2482void 2483swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y) 2484 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2485 __is_nothrow_swappable<_T2>::value) 2486 {__x.swap(__y);} 2487 2488// __same_or_less_cv_qualified 2489 2490template <class _Ptr1, class _Ptr2, 2491 bool = is_same<typename remove_cv<typename pointer_traits<_Ptr1>::element_type>::type, 2492 typename remove_cv<typename pointer_traits<_Ptr2>::element_type>::type 2493 >::value 2494 > 2495struct __same_or_less_cv_qualified_imp 2496 : is_convertible<_Ptr1, _Ptr2> {}; 2497 2498template <class _Ptr1, class _Ptr2> 2499struct __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2, false> 2500 : false_type {}; 2501 2502template <class _Ptr1, class _Ptr2, bool = is_pointer<_Ptr1>::value || 2503 is_same<_Ptr1, _Ptr2>::value || 2504 __has_element_type<_Ptr1>::value> 2505struct __same_or_less_cv_qualified 2506 : __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2> {}; 2507 2508template <class _Ptr1, class _Ptr2> 2509struct __same_or_less_cv_qualified<_Ptr1, _Ptr2, false> 2510 : false_type {}; 2511 2512// default_delete 2513 2514template <class _Tp> 2515struct _LIBCPP_TYPE_VIS_ONLY default_delete 2516{ 2517#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2518 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2519#else 2520 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2521#endif 2522 template <class _Up> 2523 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up>&, 2524 typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2525 _LIBCPP_INLINE_VISIBILITY void operator() (_Tp* __ptr) const _NOEXCEPT 2526 { 2527 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2528 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type"); 2529 delete __ptr; 2530 } 2531}; 2532 2533template <class _Tp> 2534struct _LIBCPP_TYPE_VIS_ONLY default_delete<_Tp[]> 2535{ 2536public: 2537#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2538 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2539#else 2540 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2541#endif 2542 template <class _Up> 2543 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up[]>&, 2544 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2545 template <class _Up> 2546 _LIBCPP_INLINE_VISIBILITY 2547 void operator() (_Up* __ptr, 2548 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) const _NOEXCEPT 2549 { 2550 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2551 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type"); 2552 delete [] __ptr; 2553 } 2554}; 2555 2556template <class _Tp, class _Dp = default_delete<_Tp> > 2557class _LIBCPP_TYPE_VIS_ONLY unique_ptr 2558{ 2559public: 2560 typedef _Tp element_type; 2561 typedef _Dp deleter_type; 2562 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2563private: 2564 __compressed_pair<pointer, deleter_type> __ptr_; 2565 2566#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2567 unique_ptr(unique_ptr&); 2568 template <class _Up, class _Ep> 2569 unique_ptr(unique_ptr<_Up, _Ep>&); 2570 unique_ptr& operator=(unique_ptr&); 2571 template <class _Up, class _Ep> 2572 unique_ptr& operator=(unique_ptr<_Up, _Ep>&); 2573#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2574 2575 struct __nat {int __for_bool_;}; 2576 2577 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2578 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2579public: 2580 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2581 : __ptr_(pointer()) 2582 { 2583 static_assert(!is_pointer<deleter_type>::value, 2584 "unique_ptr constructed with null function pointer deleter"); 2585 } 2586 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2587 : __ptr_(pointer()) 2588 { 2589 static_assert(!is_pointer<deleter_type>::value, 2590 "unique_ptr constructed with null function pointer deleter"); 2591 } 2592 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) _NOEXCEPT 2593 : __ptr_(_VSTD::move(__p)) 2594 { 2595 static_assert(!is_pointer<deleter_type>::value, 2596 "unique_ptr constructed with null function pointer deleter"); 2597 } 2598 2599#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2600 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename conditional< 2601 is_reference<deleter_type>::value, 2602 deleter_type, 2603 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2604 _NOEXCEPT 2605 : __ptr_(__p, __d) {} 2606 2607 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename remove_reference<deleter_type>::type&& __d) 2608 _NOEXCEPT 2609 : __ptr_(__p, _VSTD::move(__d)) 2610 { 2611 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2612 } 2613 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2614 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2615 template <class _Up, class _Ep> 2616 _LIBCPP_INLINE_VISIBILITY 2617 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2618 typename enable_if 2619 < 2620 !is_array<_Up>::value && 2621 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2622 is_convertible<_Ep, deleter_type>::value && 2623 ( 2624 !is_reference<deleter_type>::value || 2625 is_same<deleter_type, _Ep>::value 2626 ), 2627 __nat 2628 >::type = __nat()) _NOEXCEPT 2629 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {} 2630 2631 template <class _Up> 2632 _LIBCPP_INLINE_VISIBILITY unique_ptr(auto_ptr<_Up>&& __p, 2633 typename enable_if< 2634 is_convertible<_Up*, _Tp*>::value && 2635 is_same<_Dp, default_delete<_Tp> >::value, 2636 __nat 2637 >::type = __nat()) _NOEXCEPT 2638 : __ptr_(__p.release()) 2639 { 2640 } 2641 2642 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2643 { 2644 reset(__u.release()); 2645 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2646 return *this; 2647 } 2648 2649 template <class _Up, class _Ep> 2650 _LIBCPP_INLINE_VISIBILITY 2651 typename enable_if 2652 < 2653 !is_array<_Up>::value && 2654 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2655 is_assignable<deleter_type&, _Ep&&>::value, 2656 unique_ptr& 2657 >::type 2658 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2659 { 2660 reset(__u.release()); 2661 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2662 return *this; 2663 } 2664#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2665 2666 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2667 { 2668 return __rv<unique_ptr>(*this); 2669 } 2670 2671 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2672 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2673 2674 template <class _Up, class _Ep> 2675 _LIBCPP_INLINE_VISIBILITY 2676 typename enable_if< 2677 !is_array<_Up>::value && 2678 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2679 is_assignable<deleter_type&, _Ep&>::value, 2680 unique_ptr& 2681 >::type 2682 operator=(unique_ptr<_Up, _Ep> __u) 2683 { 2684 reset(__u.release()); 2685 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2686 return *this; 2687 } 2688 2689 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2690 : __ptr_(_VSTD::move(__p), _VSTD::move(__d)) {} 2691 2692 template <class _Up> 2693 _LIBCPP_INLINE_VISIBILITY 2694 typename enable_if< 2695 is_convertible<_Up*, _Tp*>::value && 2696 is_same<_Dp, default_delete<_Tp> >::value, 2697 unique_ptr& 2698 >::type 2699 operator=(auto_ptr<_Up> __p) 2700 {reset(__p.release()); return *this;} 2701 2702#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2703 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2704 2705 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2706 { 2707 reset(); 2708 return *this; 2709 } 2710 2711 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator*() const 2712 {return *__ptr_.first();} 2713 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT {return __ptr_.first();} 2714 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2715 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2716 {return __ptr_.second();} 2717 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2718 {return __ptr_.second();} 2719 _LIBCPP_INLINE_VISIBILITY 2720 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2721 {return __ptr_.first() != nullptr;} 2722 2723 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2724 { 2725 pointer __t = __ptr_.first(); 2726 __ptr_.first() = pointer(); 2727 return __t; 2728 } 2729 2730 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) _NOEXCEPT 2731 { 2732 pointer __tmp = __ptr_.first(); 2733 __ptr_.first() = __p; 2734 if (__tmp) 2735 __ptr_.second()(__tmp); 2736 } 2737 2738 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) _NOEXCEPT 2739 {__ptr_.swap(__u.__ptr_);} 2740}; 2741 2742template <class _Tp, class _Dp> 2743class _LIBCPP_TYPE_VIS_ONLY unique_ptr<_Tp[], _Dp> 2744{ 2745public: 2746 typedef _Tp element_type; 2747 typedef _Dp deleter_type; 2748 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2749private: 2750 __compressed_pair<pointer, deleter_type> __ptr_; 2751 2752#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2753 unique_ptr(unique_ptr&); 2754 template <class _Up> 2755 unique_ptr(unique_ptr<_Up>&); 2756 unique_ptr& operator=(unique_ptr&); 2757 template <class _Up> 2758 unique_ptr& operator=(unique_ptr<_Up>&); 2759#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2760 2761 struct __nat {int __for_bool_;}; 2762 2763 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2764 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2765public: 2766 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2767 : __ptr_(pointer()) 2768 { 2769 static_assert(!is_pointer<deleter_type>::value, 2770 "unique_ptr constructed with null function pointer deleter"); 2771 } 2772 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2773 : __ptr_(pointer()) 2774 { 2775 static_assert(!is_pointer<deleter_type>::value, 2776 "unique_ptr constructed with null function pointer deleter"); 2777 } 2778#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2779 template <class _Pp> 2780 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(_Pp __p, 2781 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) _NOEXCEPT 2782 : __ptr_(__p) 2783 { 2784 static_assert(!is_pointer<deleter_type>::value, 2785 "unique_ptr constructed with null function pointer deleter"); 2786 } 2787 2788 template <class _Pp> 2789 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, typename conditional< 2790 is_reference<deleter_type>::value, 2791 deleter_type, 2792 typename add_lvalue_reference<const deleter_type>::type>::type __d, 2793 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2794 _NOEXCEPT 2795 : __ptr_(__p, __d) {} 2796 2797 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename conditional< 2798 is_reference<deleter_type>::value, 2799 deleter_type, 2800 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2801 _NOEXCEPT 2802 : __ptr_(pointer(), __d) {} 2803 2804 template <class _Pp> 2805 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, 2806 typename remove_reference<deleter_type>::type&& __d, 2807 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2808 _NOEXCEPT 2809 : __ptr_(__p, _VSTD::move(__d)) 2810 { 2811 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2812 } 2813 2814 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename remove_reference<deleter_type>::type&& __d) 2815 _NOEXCEPT 2816 : __ptr_(pointer(), _VSTD::move(__d)) 2817 { 2818 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2819 } 2820 2821 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2822 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2823 2824 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2825 { 2826 reset(__u.release()); 2827 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2828 return *this; 2829 } 2830 2831 template <class _Up, class _Ep> 2832 _LIBCPP_INLINE_VISIBILITY 2833 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2834 typename enable_if 2835 < 2836 is_array<_Up>::value && 2837 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value 2838 && is_convertible<_Ep, deleter_type>::value && 2839 ( 2840 !is_reference<deleter_type>::value || 2841 is_same<deleter_type, _Ep>::value 2842 ), 2843 __nat 2844 >::type = __nat() 2845 ) _NOEXCEPT 2846 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2847 2848 2849 template <class _Up, class _Ep> 2850 _LIBCPP_INLINE_VISIBILITY 2851 typename enable_if 2852 < 2853 is_array<_Up>::value && 2854 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2855 is_assignable<deleter_type&, _Ep&&>::value, 2856 unique_ptr& 2857 >::type 2858 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2859 { 2860 reset(__u.release()); 2861 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2862 return *this; 2863 } 2864#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2865 2866 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) 2867 : __ptr_(__p) 2868 { 2869 static_assert(!is_pointer<deleter_type>::value, 2870 "unique_ptr constructed with null function pointer deleter"); 2871 } 2872 2873 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2874 : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {} 2875 2876 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, deleter_type __d) 2877 : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {} 2878 2879 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2880 { 2881 return __rv<unique_ptr>(*this); 2882 } 2883 2884 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2885 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2886 2887 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(__rv<unique_ptr> __u) 2888 { 2889 reset(__u->release()); 2890 __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter()); 2891 return *this; 2892 } 2893 2894#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2895 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2896 2897 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2898 { 2899 reset(); 2900 return *this; 2901 } 2902 2903 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator[](size_t __i) const 2904 {return __ptr_.first()[__i];} 2905 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2906 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2907 {return __ptr_.second();} 2908 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2909 {return __ptr_.second();} 2910 _LIBCPP_INLINE_VISIBILITY 2911 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2912 {return __ptr_.first() != nullptr;} 2913 2914 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2915 { 2916 pointer __t = __ptr_.first(); 2917 __ptr_.first() = pointer(); 2918 return __t; 2919 } 2920 2921#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2922 template <class _Pp> 2923 _LIBCPP_INLINE_VISIBILITY 2924 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, void>::type 2925 reset(_Pp __p) _NOEXCEPT 2926 { 2927 pointer __tmp = __ptr_.first(); 2928 __ptr_.first() = __p; 2929 if (__tmp) 2930 __ptr_.second()(__tmp); 2931 } 2932 _LIBCPP_INLINE_VISIBILITY void reset(nullptr_t) _NOEXCEPT 2933 { 2934 pointer __tmp = __ptr_.first(); 2935 __ptr_.first() = nullptr; 2936 if (__tmp) 2937 __ptr_.second()(__tmp); 2938 } 2939 _LIBCPP_INLINE_VISIBILITY void reset() _NOEXCEPT 2940 { 2941 pointer __tmp = __ptr_.first(); 2942 __ptr_.first() = nullptr; 2943 if (__tmp) 2944 __ptr_.second()(__tmp); 2945 } 2946#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2947 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) 2948 { 2949 pointer __tmp = __ptr_.first(); 2950 __ptr_.first() = __p; 2951 if (__tmp) 2952 __ptr_.second()(__tmp); 2953 } 2954#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2955 2956 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);} 2957private: 2958 2959#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2960 template <class _Up> 2961 explicit unique_ptr(_Up); 2962 template <class _Up> 2963 unique_ptr(_Up __u, 2964 typename conditional< 2965 is_reference<deleter_type>::value, 2966 deleter_type, 2967 typename add_lvalue_reference<const deleter_type>::type>::type, 2968 typename enable_if 2969 < 2970 is_convertible<_Up, pointer>::value, 2971 __nat 2972 >::type = __nat()); 2973#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2974}; 2975 2976template <class _Tp, class _Dp> 2977inline _LIBCPP_INLINE_VISIBILITY 2978void 2979swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} 2980 2981template <class _T1, class _D1, class _T2, class _D2> 2982inline _LIBCPP_INLINE_VISIBILITY 2983bool 2984operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} 2985 2986template <class _T1, class _D1, class _T2, class _D2> 2987inline _LIBCPP_INLINE_VISIBILITY 2988bool 2989operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} 2990 2991template <class _T1, class _D1, class _T2, class _D2> 2992inline _LIBCPP_INLINE_VISIBILITY 2993bool 2994operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) 2995{ 2996 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2997 typedef typename unique_ptr<_T2, _D2>::pointer _P2; 2998 typedef typename common_type<_P1, _P2>::type _Vp; 2999 return less<_Vp>()(__x.get(), __y.get()); 3000} 3001 3002template <class _T1, class _D1, class _T2, class _D2> 3003inline _LIBCPP_INLINE_VISIBILITY 3004bool 3005operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} 3006 3007template <class _T1, class _D1, class _T2, class _D2> 3008inline _LIBCPP_INLINE_VISIBILITY 3009bool 3010operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} 3011 3012template <class _T1, class _D1, class _T2, class _D2> 3013inline _LIBCPP_INLINE_VISIBILITY 3014bool 3015operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} 3016 3017template <class _T1, class _D1> 3018inline _LIBCPP_INLINE_VISIBILITY 3019bool 3020operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 3021{ 3022 return !__x; 3023} 3024 3025template <class _T1, class _D1> 3026inline _LIBCPP_INLINE_VISIBILITY 3027bool 3028operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 3029{ 3030 return !__x; 3031} 3032 3033template <class _T1, class _D1> 3034inline _LIBCPP_INLINE_VISIBILITY 3035bool 3036operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 3037{ 3038 return static_cast<bool>(__x); 3039} 3040 3041template <class _T1, class _D1> 3042inline _LIBCPP_INLINE_VISIBILITY 3043bool 3044operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 3045{ 3046 return static_cast<bool>(__x); 3047} 3048 3049template <class _T1, class _D1> 3050inline _LIBCPP_INLINE_VISIBILITY 3051bool 3052operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3053{ 3054 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 3055 return less<_P1>()(__x.get(), nullptr); 3056} 3057 3058template <class _T1, class _D1> 3059inline _LIBCPP_INLINE_VISIBILITY 3060bool 3061operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3062{ 3063 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 3064 return less<_P1>()(nullptr, __x.get()); 3065} 3066 3067template <class _T1, class _D1> 3068inline _LIBCPP_INLINE_VISIBILITY 3069bool 3070operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3071{ 3072 return nullptr < __x; 3073} 3074 3075template <class _T1, class _D1> 3076inline _LIBCPP_INLINE_VISIBILITY 3077bool 3078operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3079{ 3080 return __x < nullptr; 3081} 3082 3083template <class _T1, class _D1> 3084inline _LIBCPP_INLINE_VISIBILITY 3085bool 3086operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3087{ 3088 return !(nullptr < __x); 3089} 3090 3091template <class _T1, class _D1> 3092inline _LIBCPP_INLINE_VISIBILITY 3093bool 3094operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3095{ 3096 return !(__x < nullptr); 3097} 3098 3099template <class _T1, class _D1> 3100inline _LIBCPP_INLINE_VISIBILITY 3101bool 3102operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3103{ 3104 return !(__x < nullptr); 3105} 3106 3107template <class _T1, class _D1> 3108inline _LIBCPP_INLINE_VISIBILITY 3109bool 3110operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3111{ 3112 return !(nullptr < __x); 3113} 3114 3115#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3116 3117template <class _Tp, class _Dp> 3118inline _LIBCPP_INLINE_VISIBILITY 3119unique_ptr<_Tp, _Dp> 3120move(unique_ptr<_Tp, _Dp>& __t) 3121{ 3122 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t)); 3123} 3124 3125#endif 3126 3127#if _LIBCPP_STD_VER > 11 3128 3129template<class _Tp> 3130struct __unique_if 3131{ 3132 typedef unique_ptr<_Tp> __unique_single; 3133}; 3134 3135template<class _Tp> 3136struct __unique_if<_Tp[]> 3137{ 3138 typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; 3139}; 3140 3141template<class _Tp, size_t _Np> 3142struct __unique_if<_Tp[_Np]> 3143{ 3144 typedef void __unique_array_known_bound; 3145}; 3146 3147template<class _Tp, class... _Args> 3148inline _LIBCPP_INLINE_VISIBILITY 3149typename __unique_if<_Tp>::__unique_single 3150make_unique(_Args&&... __args) 3151{ 3152 return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...)); 3153} 3154 3155template<class _Tp> 3156inline _LIBCPP_INLINE_VISIBILITY 3157typename __unique_if<_Tp>::__unique_array_unknown_bound 3158make_unique(size_t __n) 3159{ 3160 typedef typename remove_extent<_Tp>::type _Up; 3161 return unique_ptr<_Tp>(new _Up[__n]()); 3162} 3163 3164template<class _Tp, class... _Args> 3165 typename __unique_if<_Tp>::__unique_array_known_bound 3166 make_unique(_Args&&...) = delete; 3167 3168#endif // _LIBCPP_STD_VER > 11 3169 3170template <class _Tp> struct hash; 3171 3172template <class _Size> 3173inline _LIBCPP_INLINE_VISIBILITY 3174_Size 3175__loadword(const void* __p) 3176{ 3177 _Size __r; 3178 std::memcpy(&__r, __p, sizeof(__r)); 3179 return __r; 3180} 3181 3182// We use murmur2 when size_t is 32 bits, and cityhash64 when size_t 3183// is 64 bits. This is because cityhash64 uses 64bit x 64bit 3184// multiplication, which can be very slow on 32-bit systems. 3185template <class _Size, size_t = sizeof(_Size)*__CHAR_BIT__> 3186struct __murmur2_or_cityhash; 3187 3188template <class _Size> 3189struct __murmur2_or_cityhash<_Size, 32> 3190{ 3191 _Size operator()(const void* __key, _Size __len); 3192}; 3193 3194// murmur2 3195template <class _Size> 3196_Size 3197__murmur2_or_cityhash<_Size, 32>::operator()(const void* __key, _Size __len) _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 3198{ 3199 const _Size __m = 0x5bd1e995; 3200 const _Size __r = 24; 3201 _Size __h = __len; 3202 const unsigned char* __data = static_cast<const unsigned char*>(__key); 3203 for (; __len >= 4; __data += 4, __len -= 4) 3204 { 3205 _Size __k = __loadword<_Size>(__data); 3206 __k *= __m; 3207 __k ^= __k >> __r; 3208 __k *= __m; 3209 __h *= __m; 3210 __h ^= __k; 3211 } 3212 switch (__len) 3213 { 3214 case 3: 3215 __h ^= __data[2] << 16; 3216 case 2: 3217 __h ^= __data[1] << 8; 3218 case 1: 3219 __h ^= __data[0]; 3220 __h *= __m; 3221 } 3222 __h ^= __h >> 13; 3223 __h *= __m; 3224 __h ^= __h >> 15; 3225 return __h; 3226} 3227 3228template <class _Size> 3229struct __murmur2_or_cityhash<_Size, 64> 3230{ 3231 _Size operator()(const void* __key, _Size __len); 3232 3233 private: 3234 // Some primes between 2^63 and 2^64. 3235 static const _Size __k0 = 0xc3a5c85c97cb3127ULL; 3236 static const _Size __k1 = 0xb492b66fbe98f273ULL; 3237 static const _Size __k2 = 0x9ae16a3b2f90404fULL; 3238 static const _Size __k3 = 0xc949d7c7509e6557ULL; 3239 3240 static _Size __rotate(_Size __val, int __shift) { 3241 return __shift == 0 ? __val : ((__val >> __shift) | (__val << (64 - __shift))); 3242 } 3243 3244 static _Size __rotate_by_at_least_1(_Size __val, int __shift) { 3245 return (__val >> __shift) | (__val << (64 - __shift)); 3246 } 3247 3248 static _Size __shift_mix(_Size __val) { 3249 return __val ^ (__val >> 47); 3250 } 3251 3252 static _Size __hash_len_16(_Size __u, _Size __v) { 3253 const _Size __mul = 0x9ddfea08eb382d69ULL; 3254 _Size __a = (__u ^ __v) * __mul; 3255 __a ^= (__a >> 47); 3256 _Size __b = (__v ^ __a) * __mul; 3257 __b ^= (__b >> 47); 3258 __b *= __mul; 3259 return __b; 3260 } 3261 3262 static _Size __hash_len_0_to_16(const char* __s, _Size __len) { 3263 if (__len > 8) { 3264 const _Size __a = __loadword<_Size>(__s); 3265 const _Size __b = __loadword<_Size>(__s + __len - 8); 3266 return __hash_len_16(__a, __rotate_by_at_least_1(__b + __len, __len)) ^ __b; 3267 } 3268 if (__len >= 4) { 3269 const uint32_t __a = __loadword<uint32_t>(__s); 3270 const uint32_t __b = __loadword<uint32_t>(__s + __len - 4); 3271 return __hash_len_16(__len + (__a << 3), __b); 3272 } 3273 if (__len > 0) { 3274 const unsigned char __a = __s[0]; 3275 const unsigned char __b = __s[__len >> 1]; 3276 const unsigned char __c = __s[__len - 1]; 3277 const uint32_t __y = static_cast<uint32_t>(__a) + 3278 (static_cast<uint32_t>(__b) << 8); 3279 const uint32_t __z = __len + (static_cast<uint32_t>(__c) << 2); 3280 return __shift_mix(__y * __k2 ^ __z * __k3) * __k2; 3281 } 3282 return __k2; 3283 } 3284 3285 static _Size __hash_len_17_to_32(const char *__s, _Size __len) { 3286 const _Size __a = __loadword<_Size>(__s) * __k1; 3287 const _Size __b = __loadword<_Size>(__s + 8); 3288 const _Size __c = __loadword<_Size>(__s + __len - 8) * __k2; 3289 const _Size __d = __loadword<_Size>(__s + __len - 16) * __k0; 3290 return __hash_len_16(__rotate(__a - __b, 43) + __rotate(__c, 30) + __d, 3291 __a + __rotate(__b ^ __k3, 20) - __c + __len); 3292 } 3293 3294 // Return a 16-byte hash for 48 bytes. Quick and dirty. 3295 // Callers do best to use "random-looking" values for a and b. 3296 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3297 _Size __w, _Size __x, _Size __y, _Size __z, _Size __a, _Size __b) { 3298 __a += __w; 3299 __b = __rotate(__b + __a + __z, 21); 3300 const _Size __c = __a; 3301 __a += __x; 3302 __a += __y; 3303 __b += __rotate(__a, 44); 3304 return pair<_Size, _Size>(__a + __z, __b + __c); 3305 } 3306 3307 // Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty. 3308 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3309 const char* __s, _Size __a, _Size __b) { 3310 return __weak_hash_len_32_with_seeds(__loadword<_Size>(__s), 3311 __loadword<_Size>(__s + 8), 3312 __loadword<_Size>(__s + 16), 3313 __loadword<_Size>(__s + 24), 3314 __a, 3315 __b); 3316 } 3317 3318 // Return an 8-byte hash for 33 to 64 bytes. 3319 static _Size __hash_len_33_to_64(const char *__s, size_t __len) { 3320 _Size __z = __loadword<_Size>(__s + 24); 3321 _Size __a = __loadword<_Size>(__s) + 3322 (__len + __loadword<_Size>(__s + __len - 16)) * __k0; 3323 _Size __b = __rotate(__a + __z, 52); 3324 _Size __c = __rotate(__a, 37); 3325 __a += __loadword<_Size>(__s + 8); 3326 __c += __rotate(__a, 7); 3327 __a += __loadword<_Size>(__s + 16); 3328 _Size __vf = __a + __z; 3329 _Size __vs = __b + __rotate(__a, 31) + __c; 3330 __a = __loadword<_Size>(__s + 16) + __loadword<_Size>(__s + __len - 32); 3331 __z += __loadword<_Size>(__s + __len - 8); 3332 __b = __rotate(__a + __z, 52); 3333 __c = __rotate(__a, 37); 3334 __a += __loadword<_Size>(__s + __len - 24); 3335 __c += __rotate(__a, 7); 3336 __a += __loadword<_Size>(__s + __len - 16); 3337 _Size __wf = __a + __z; 3338 _Size __ws = __b + __rotate(__a, 31) + __c; 3339 _Size __r = __shift_mix((__vf + __ws) * __k2 + (__wf + __vs) * __k0); 3340 return __shift_mix(__r * __k0 + __vs) * __k2; 3341 } 3342}; 3343 3344// cityhash64 3345template <class _Size> 3346_Size 3347__murmur2_or_cityhash<_Size, 64>::operator()(const void* __key, _Size __len) _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 3348{ 3349 const char* __s = static_cast<const char*>(__key); 3350 if (__len <= 32) { 3351 if (__len <= 16) { 3352 return __hash_len_0_to_16(__s, __len); 3353 } else { 3354 return __hash_len_17_to_32(__s, __len); 3355 } 3356 } else if (__len <= 64) { 3357 return __hash_len_33_to_64(__s, __len); 3358 } 3359 3360 // For strings over 64 bytes we hash the end first, and then as we 3361 // loop we keep 56 bytes of state: v, w, x, y, and z. 3362 _Size __x = __loadword<_Size>(__s + __len - 40); 3363 _Size __y = __loadword<_Size>(__s + __len - 16) + 3364 __loadword<_Size>(__s + __len - 56); 3365 _Size __z = __hash_len_16(__loadword<_Size>(__s + __len - 48) + __len, 3366 __loadword<_Size>(__s + __len - 24)); 3367 pair<_Size, _Size> __v = __weak_hash_len_32_with_seeds(__s + __len - 64, __len, __z); 3368 pair<_Size, _Size> __w = __weak_hash_len_32_with_seeds(__s + __len - 32, __y + __k1, __x); 3369 __x = __x * __k1 + __loadword<_Size>(__s); 3370 3371 // Decrease len to the nearest multiple of 64, and operate on 64-byte chunks. 3372 __len = (__len - 1) & ~static_cast<_Size>(63); 3373 do { 3374 __x = __rotate(__x + __y + __v.first + __loadword<_Size>(__s + 8), 37) * __k1; 3375 __y = __rotate(__y + __v.second + __loadword<_Size>(__s + 48), 42) * __k1; 3376 __x ^= __w.second; 3377 __y += __v.first + __loadword<_Size>(__s + 40); 3378 __z = __rotate(__z + __w.first, 33) * __k1; 3379 __v = __weak_hash_len_32_with_seeds(__s, __v.second * __k1, __x + __w.first); 3380 __w = __weak_hash_len_32_with_seeds(__s + 32, __z + __w.second, 3381 __y + __loadword<_Size>(__s + 16)); 3382 std::swap(__z, __x); 3383 __s += 64; 3384 __len -= 64; 3385 } while (__len != 0); 3386 return __hash_len_16( 3387 __hash_len_16(__v.first, __w.first) + __shift_mix(__y) * __k1 + __z, 3388 __hash_len_16(__v.second, __w.second) + __x); 3389} 3390 3391template <class _Tp, size_t = sizeof(_Tp) / sizeof(size_t)> 3392struct __scalar_hash; 3393 3394template <class _Tp> 3395struct __scalar_hash<_Tp, 0> 3396 : public unary_function<_Tp, size_t> 3397{ 3398 _LIBCPP_INLINE_VISIBILITY 3399 size_t operator()(_Tp __v) const _NOEXCEPT 3400 { 3401 union 3402 { 3403 _Tp __t; 3404 size_t __a; 3405 } __u; 3406 __u.__a = 0; 3407 __u.__t = __v; 3408 return __u.__a; 3409 } 3410}; 3411 3412template <class _Tp> 3413struct __scalar_hash<_Tp, 1> 3414 : public unary_function<_Tp, size_t> 3415{ 3416 _LIBCPP_INLINE_VISIBILITY 3417 size_t operator()(_Tp __v) const _NOEXCEPT 3418 { 3419 union 3420 { 3421 _Tp __t; 3422 size_t __a; 3423 } __u; 3424 __u.__t = __v; 3425 return __u.__a; 3426 } 3427}; 3428 3429template <class _Tp> 3430struct __scalar_hash<_Tp, 2> 3431 : public unary_function<_Tp, size_t> 3432{ 3433 _LIBCPP_INLINE_VISIBILITY 3434 size_t operator()(_Tp __v) const _NOEXCEPT 3435 { 3436 union 3437 { 3438 _Tp __t; 3439 struct 3440 { 3441 size_t __a; 3442 size_t __b; 3443 } __s; 3444 } __u; 3445 __u.__t = __v; 3446 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3447 } 3448}; 3449 3450template <class _Tp> 3451struct __scalar_hash<_Tp, 3> 3452 : public unary_function<_Tp, size_t> 3453{ 3454 _LIBCPP_INLINE_VISIBILITY 3455 size_t operator()(_Tp __v) const _NOEXCEPT 3456 { 3457 union 3458 { 3459 _Tp __t; 3460 struct 3461 { 3462 size_t __a; 3463 size_t __b; 3464 size_t __c; 3465 } __s; 3466 } __u; 3467 __u.__t = __v; 3468 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3469 } 3470}; 3471 3472template <class _Tp> 3473struct __scalar_hash<_Tp, 4> 3474 : public unary_function<_Tp, size_t> 3475{ 3476 _LIBCPP_INLINE_VISIBILITY 3477 size_t operator()(_Tp __v) const _NOEXCEPT 3478 { 3479 union 3480 { 3481 _Tp __t; 3482 struct 3483 { 3484 size_t __a; 3485 size_t __b; 3486 size_t __c; 3487 size_t __d; 3488 } __s; 3489 } __u; 3490 __u.__t = __v; 3491 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3492 } 3493}; 3494 3495template<class _Tp> 3496struct _LIBCPP_TYPE_VIS_ONLY hash<_Tp*> 3497 : public unary_function<_Tp*, size_t> 3498{ 3499 _LIBCPP_INLINE_VISIBILITY 3500 size_t operator()(_Tp* __v) const _NOEXCEPT 3501 { 3502 union 3503 { 3504 _Tp* __t; 3505 size_t __a; 3506 } __u; 3507 __u.__t = __v; 3508 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3509 } 3510}; 3511 3512template <class _Tp, class _Dp> 3513struct _LIBCPP_TYPE_VIS_ONLY hash<unique_ptr<_Tp, _Dp> > 3514{ 3515 typedef unique_ptr<_Tp, _Dp> argument_type; 3516 typedef size_t result_type; 3517 _LIBCPP_INLINE_VISIBILITY 3518 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 3519 { 3520 typedef typename argument_type::pointer pointer; 3521 return hash<pointer>()(__ptr.get()); 3522 } 3523}; 3524 3525struct __destruct_n 3526{ 3527private: 3528 size_t size; 3529 3530 template <class _Tp> 3531 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT 3532 {for (size_t __i = 0; __i < size; ++__i, ++__p) __p->~_Tp();} 3533 3534 template <class _Tp> 3535 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT 3536 {} 3537 3538 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT 3539 {++size;} 3540 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT 3541 {} 3542 3543 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT 3544 {size = __s;} 3545 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT 3546 {} 3547public: 3548 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT 3549 : size(__s) {} 3550 3551 template <class _Tp> 3552 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT 3553 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3554 3555 template <class _Tp> 3556 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT 3557 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3558 3559 template <class _Tp> 3560 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT 3561 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3562}; 3563 3564template <class _Alloc> 3565class __allocator_destructor 3566{ 3567 typedef allocator_traits<_Alloc> __alloc_traits; 3568public: 3569 typedef typename __alloc_traits::pointer pointer; 3570 typedef typename __alloc_traits::size_type size_type; 3571private: 3572 _Alloc& __alloc_; 3573 size_type __s_; 3574public: 3575 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) 3576 _NOEXCEPT 3577 : __alloc_(__a), __s_(__s) {} 3578 _LIBCPP_INLINE_VISIBILITY 3579 void operator()(pointer __p) _NOEXCEPT 3580 {__alloc_traits::deallocate(__alloc_, __p, __s_);} 3581}; 3582 3583template <class _InputIterator, class _ForwardIterator> 3584_ForwardIterator 3585uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) 3586{ 3587 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3588#ifndef _LIBCPP_NO_EXCEPTIONS 3589 _ForwardIterator __s = __r; 3590 try 3591 { 3592#endif 3593 for (; __f != __l; ++__f, (void) ++__r) 3594 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3595#ifndef _LIBCPP_NO_EXCEPTIONS 3596 } 3597 catch (...) 3598 { 3599 for (; __s != __r; ++__s) 3600 __s->~value_type(); 3601 throw; 3602 } 3603#endif 3604 return __r; 3605} 3606 3607template <class _InputIterator, class _Size, class _ForwardIterator> 3608_ForwardIterator 3609uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) 3610{ 3611 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3612#ifndef _LIBCPP_NO_EXCEPTIONS 3613 _ForwardIterator __s = __r; 3614 try 3615 { 3616#endif 3617 for (; __n > 0; ++__f, (void) ++__r, (void) --__n) 3618 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3619#ifndef _LIBCPP_NO_EXCEPTIONS 3620 } 3621 catch (...) 3622 { 3623 for (; __s != __r; ++__s) 3624 __s->~value_type(); 3625 throw; 3626 } 3627#endif 3628 return __r; 3629} 3630 3631template <class _ForwardIterator, class _Tp> 3632void 3633uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) 3634{ 3635 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3636#ifndef _LIBCPP_NO_EXCEPTIONS 3637 _ForwardIterator __s = __f; 3638 try 3639 { 3640#endif 3641 for (; __f != __l; ++__f) 3642 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3643#ifndef _LIBCPP_NO_EXCEPTIONS 3644 } 3645 catch (...) 3646 { 3647 for (; __s != __f; ++__s) 3648 __s->~value_type(); 3649 throw; 3650 } 3651#endif 3652} 3653 3654template <class _ForwardIterator, class _Size, class _Tp> 3655_ForwardIterator 3656uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) 3657{ 3658 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3659#ifndef _LIBCPP_NO_EXCEPTIONS 3660 _ForwardIterator __s = __f; 3661 try 3662 { 3663#endif 3664 for (; __n > 0; ++__f, (void) --__n) 3665 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3666#ifndef _LIBCPP_NO_EXCEPTIONS 3667 } 3668 catch (...) 3669 { 3670 for (; __s != __f; ++__s) 3671 __s->~value_type(); 3672 throw; 3673 } 3674#endif 3675 return __f; 3676} 3677 3678class _LIBCPP_EXCEPTION_ABI bad_weak_ptr 3679 : public std::exception 3680{ 3681public: 3682 virtual ~bad_weak_ptr() _NOEXCEPT; 3683 virtual const char* what() const _NOEXCEPT; 3684}; 3685 3686template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 3687 3688class _LIBCPP_TYPE_VIS __shared_count 3689{ 3690 __shared_count(const __shared_count&); 3691 __shared_count& operator=(const __shared_count&); 3692 3693protected: 3694 long __shared_owners_; 3695 virtual ~__shared_count(); 3696private: 3697 virtual void __on_zero_shared() _NOEXCEPT = 0; 3698 3699public: 3700 _LIBCPP_INLINE_VISIBILITY 3701 explicit __shared_count(long __refs = 0) _NOEXCEPT 3702 : __shared_owners_(__refs) {} 3703 3704 void __add_shared() _NOEXCEPT; 3705 bool __release_shared() _NOEXCEPT; 3706 _LIBCPP_INLINE_VISIBILITY 3707 long use_count() const _NOEXCEPT { 3708 return __libcpp_relaxed_load(&__shared_owners_) + 1; 3709 } 3710}; 3711 3712class _LIBCPP_TYPE_VIS __shared_weak_count 3713 : private __shared_count 3714{ 3715 long __shared_weak_owners_; 3716 3717public: 3718 _LIBCPP_INLINE_VISIBILITY 3719 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT 3720 : __shared_count(__refs), 3721 __shared_weak_owners_(__refs) {} 3722protected: 3723 virtual ~__shared_weak_count(); 3724 3725public: 3726 void __add_shared() _NOEXCEPT; 3727 void __add_weak() _NOEXCEPT; 3728 void __release_shared() _NOEXCEPT; 3729 void __release_weak() _NOEXCEPT; 3730 _LIBCPP_INLINE_VISIBILITY 3731 long use_count() const _NOEXCEPT {return __shared_count::use_count();} 3732 __shared_weak_count* lock() _NOEXCEPT; 3733 3734 // Define the function out only if we build static libc++ without RTTI. 3735 // Otherwise we may break clients who need to compile their projects with 3736 // -fno-rtti and yet link against a libc++.dylib compiled 3737 // without -fno-rtti. 3738#if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC) 3739 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3740#endif 3741private: 3742 virtual void __on_zero_shared_weak() _NOEXCEPT = 0; 3743}; 3744 3745template <class _Tp, class _Dp, class _Alloc> 3746class __shared_ptr_pointer 3747 : public __shared_weak_count 3748{ 3749 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; 3750public: 3751 _LIBCPP_INLINE_VISIBILITY 3752 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) 3753 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {} 3754 3755#ifndef _LIBCPP_NO_RTTI 3756 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3757#endif 3758 3759private: 3760 virtual void __on_zero_shared() _NOEXCEPT; 3761 virtual void __on_zero_shared_weak() _NOEXCEPT; 3762}; 3763 3764#ifndef _LIBCPP_NO_RTTI 3765 3766template <class _Tp, class _Dp, class _Alloc> 3767const void* 3768__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT 3769{ 3770 return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : 0; 3771} 3772 3773#endif // _LIBCPP_NO_RTTI 3774 3775template <class _Tp, class _Dp, class _Alloc> 3776void 3777__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT 3778{ 3779 __data_.first().second()(__data_.first().first()); 3780 __data_.first().second().~_Dp(); 3781} 3782 3783template <class _Tp, class _Dp, class _Alloc> 3784void 3785__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3786{ 3787 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al; 3788 typedef allocator_traits<_Al> _ATraits; 3789 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3790 3791 _Al __a(__data_.second()); 3792 __data_.second().~_Alloc(); 3793 __a.deallocate(_PTraits::pointer_to(*this), 1); 3794} 3795 3796template <class _Tp, class _Alloc> 3797class __shared_ptr_emplace 3798 : public __shared_weak_count 3799{ 3800 __compressed_pair<_Alloc, _Tp> __data_; 3801public: 3802#ifndef _LIBCPP_HAS_NO_VARIADICS 3803 3804 _LIBCPP_INLINE_VISIBILITY 3805 __shared_ptr_emplace(_Alloc __a) 3806 : __data_(_VSTD::move(__a)) {} 3807 3808 template <class ..._Args> 3809 _LIBCPP_INLINE_VISIBILITY 3810 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) 3811 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a), 3812 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {} 3813 3814#else // _LIBCPP_HAS_NO_VARIADICS 3815 3816 _LIBCPP_INLINE_VISIBILITY 3817 __shared_ptr_emplace(_Alloc __a) 3818 : __data_(__a) {} 3819 3820 template <class _A0> 3821 _LIBCPP_INLINE_VISIBILITY 3822 __shared_ptr_emplace(_Alloc __a, _A0& __a0) 3823 : __data_(__a, _Tp(__a0)) {} 3824 3825 template <class _A0, class _A1> 3826 _LIBCPP_INLINE_VISIBILITY 3827 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) 3828 : __data_(__a, _Tp(__a0, __a1)) {} 3829 3830 template <class _A0, class _A1, class _A2> 3831 _LIBCPP_INLINE_VISIBILITY 3832 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) 3833 : __data_(__a, _Tp(__a0, __a1, __a2)) {} 3834 3835#endif // _LIBCPP_HAS_NO_VARIADICS 3836 3837private: 3838 virtual void __on_zero_shared() _NOEXCEPT; 3839 virtual void __on_zero_shared_weak() _NOEXCEPT; 3840public: 3841 _LIBCPP_INLINE_VISIBILITY 3842 _Tp* get() _NOEXCEPT {return &__data_.second();} 3843}; 3844 3845template <class _Tp, class _Alloc> 3846void 3847__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT 3848{ 3849 __data_.second().~_Tp(); 3850} 3851 3852template <class _Tp, class _Alloc> 3853void 3854__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3855{ 3856 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type _Al; 3857 typedef allocator_traits<_Al> _ATraits; 3858 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3859 _Al __a(__data_.first()); 3860 __data_.first().~_Alloc(); 3861 __a.deallocate(_PTraits::pointer_to(*this), 1); 3862} 3863 3864template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this; 3865 3866template<class _Tp> 3867class _LIBCPP_TYPE_VIS_ONLY shared_ptr 3868{ 3869public: 3870 typedef _Tp element_type; 3871private: 3872 element_type* __ptr_; 3873 __shared_weak_count* __cntrl_; 3874 3875 struct __nat {int __for_bool_;}; 3876public: 3877 _LIBCPP_INLINE_VISIBILITY 3878 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT; 3879 _LIBCPP_INLINE_VISIBILITY 3880 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT; 3881 template<class _Yp> 3882 explicit shared_ptr(_Yp* __p, 3883 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3884 template<class _Yp, class _Dp> 3885 shared_ptr(_Yp* __p, _Dp __d, 3886 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3887 template<class _Yp, class _Dp, class _Alloc> 3888 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 3889 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3890 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); 3891 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); 3892 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT; 3893 _LIBCPP_INLINE_VISIBILITY 3894 shared_ptr(const shared_ptr& __r) _NOEXCEPT; 3895 template<class _Yp> 3896 _LIBCPP_INLINE_VISIBILITY 3897 shared_ptr(const shared_ptr<_Yp>& __r, 3898 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3899 _NOEXCEPT; 3900#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3901 _LIBCPP_INLINE_VISIBILITY 3902 shared_ptr(shared_ptr&& __r) _NOEXCEPT; 3903 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(shared_ptr<_Yp>&& __r, 3904 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3905 _NOEXCEPT; 3906#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3907 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, 3908 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type= __nat()); 3909#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3910 template<class _Yp> 3911 shared_ptr(auto_ptr<_Yp>&& __r, 3912 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3913#else 3914 template<class _Yp> 3915 shared_ptr(auto_ptr<_Yp> __r, 3916 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3917#endif 3918#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3919 template <class _Yp, class _Dp> 3920 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3921 typename enable_if 3922 < 3923 !is_lvalue_reference<_Dp>::value && 3924 !is_array<_Yp>::value && 3925 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3926 __nat 3927 >::type = __nat()); 3928 template <class _Yp, class _Dp> 3929 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3930 typename enable_if 3931 < 3932 is_lvalue_reference<_Dp>::value && 3933 !is_array<_Yp>::value && 3934 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3935 __nat 3936 >::type = __nat()); 3937#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3938 template <class _Yp, class _Dp> 3939 shared_ptr(unique_ptr<_Yp, _Dp>, 3940 typename enable_if 3941 < 3942 !is_lvalue_reference<_Dp>::value && 3943 !is_array<_Yp>::value && 3944 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3945 __nat 3946 >::type = __nat()); 3947 template <class _Yp, class _Dp> 3948 shared_ptr(unique_ptr<_Yp, _Dp>, 3949 typename enable_if 3950 < 3951 is_lvalue_reference<_Dp>::value && 3952 !is_array<_Yp>::value && 3953 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3954 __nat 3955 >::type = __nat()); 3956#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3957 3958 ~shared_ptr(); 3959 3960 _LIBCPP_INLINE_VISIBILITY 3961 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT; 3962 template<class _Yp> 3963 typename enable_if 3964 < 3965 is_convertible<_Yp*, element_type*>::value, 3966 shared_ptr& 3967 >::type 3968 _LIBCPP_INLINE_VISIBILITY 3969 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT; 3970#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3971 _LIBCPP_INLINE_VISIBILITY 3972 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT; 3973 template<class _Yp> 3974 typename enable_if 3975 < 3976 is_convertible<_Yp*, element_type*>::value, 3977 shared_ptr<_Tp>& 3978 >::type 3979 _LIBCPP_INLINE_VISIBILITY 3980 operator=(shared_ptr<_Yp>&& __r); 3981 template<class _Yp> 3982 typename enable_if 3983 < 3984 !is_array<_Yp>::value && 3985 is_convertible<_Yp*, element_type*>::value, 3986 shared_ptr 3987 >::type& 3988 _LIBCPP_INLINE_VISIBILITY 3989 operator=(auto_ptr<_Yp>&& __r); 3990#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3991 template<class _Yp> 3992 typename enable_if 3993 < 3994 !is_array<_Yp>::value && 3995 is_convertible<_Yp*, element_type*>::value, 3996 shared_ptr& 3997 >::type 3998 _LIBCPP_INLINE_VISIBILITY 3999 operator=(auto_ptr<_Yp> __r); 4000#endif 4001 template <class _Yp, class _Dp> 4002 typename enable_if 4003 < 4004 !is_array<_Yp>::value && 4005 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4006 shared_ptr& 4007 >::type 4008#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4009 _LIBCPP_INLINE_VISIBILITY 4010 operator=(unique_ptr<_Yp, _Dp>&& __r); 4011#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4012 _LIBCPP_INLINE_VISIBILITY 4013 operator=(unique_ptr<_Yp, _Dp> __r); 4014#endif 4015 4016 _LIBCPP_INLINE_VISIBILITY 4017 void swap(shared_ptr& __r) _NOEXCEPT; 4018 _LIBCPP_INLINE_VISIBILITY 4019 void reset() _NOEXCEPT; 4020 template<class _Yp> 4021 typename enable_if 4022 < 4023 is_convertible<_Yp*, element_type*>::value, 4024 void 4025 >::type 4026 _LIBCPP_INLINE_VISIBILITY 4027 reset(_Yp* __p); 4028 template<class _Yp, class _Dp> 4029 typename enable_if 4030 < 4031 is_convertible<_Yp*, element_type*>::value, 4032 void 4033 >::type 4034 _LIBCPP_INLINE_VISIBILITY 4035 reset(_Yp* __p, _Dp __d); 4036 template<class _Yp, class _Dp, class _Alloc> 4037 typename enable_if 4038 < 4039 is_convertible<_Yp*, element_type*>::value, 4040 void 4041 >::type 4042 _LIBCPP_INLINE_VISIBILITY 4043 reset(_Yp* __p, _Dp __d, _Alloc __a); 4044 4045 _LIBCPP_INLINE_VISIBILITY 4046 element_type* get() const _NOEXCEPT {return __ptr_;} 4047 _LIBCPP_INLINE_VISIBILITY 4048 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT 4049 {return *__ptr_;} 4050 _LIBCPP_INLINE_VISIBILITY 4051 element_type* operator->() const _NOEXCEPT {return __ptr_;} 4052 _LIBCPP_INLINE_VISIBILITY 4053 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;} 4054 _LIBCPP_INLINE_VISIBILITY 4055 bool unique() const _NOEXCEPT {return use_count() == 1;} 4056 _LIBCPP_INLINE_VISIBILITY 4057 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;} 4058 template <class _Up> 4059 _LIBCPP_INLINE_VISIBILITY 4060 bool owner_before(shared_ptr<_Up> const& __p) const 4061 {return __cntrl_ < __p.__cntrl_;} 4062 template <class _Up> 4063 _LIBCPP_INLINE_VISIBILITY 4064 bool owner_before(weak_ptr<_Up> const& __p) const 4065 {return __cntrl_ < __p.__cntrl_;} 4066 _LIBCPP_INLINE_VISIBILITY 4067 bool 4068 __owner_equivalent(const shared_ptr& __p) const 4069 {return __cntrl_ == __p.__cntrl_;} 4070 4071#ifndef _LIBCPP_NO_RTTI 4072 template <class _Dp> 4073 _LIBCPP_INLINE_VISIBILITY 4074 _Dp* __get_deleter() const _NOEXCEPT 4075 {return (_Dp*)(__cntrl_ ? __cntrl_->__get_deleter(typeid(_Dp)) : 0);} 4076#endif // _LIBCPP_NO_RTTI 4077 4078#ifndef _LIBCPP_HAS_NO_VARIADICS 4079 4080 template<class ..._Args> 4081 static 4082 shared_ptr<_Tp> 4083 make_shared(_Args&& ...__args); 4084 4085 template<class _Alloc, class ..._Args> 4086 static 4087 shared_ptr<_Tp> 4088 allocate_shared(const _Alloc& __a, _Args&& ...__args); 4089 4090#else // _LIBCPP_HAS_NO_VARIADICS 4091 4092 static shared_ptr<_Tp> make_shared(); 4093 4094 template<class _A0> 4095 static shared_ptr<_Tp> make_shared(_A0&); 4096 4097 template<class _A0, class _A1> 4098 static shared_ptr<_Tp> make_shared(_A0&, _A1&); 4099 4100 template<class _A0, class _A1, class _A2> 4101 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); 4102 4103 template<class _Alloc> 4104 static shared_ptr<_Tp> 4105 allocate_shared(const _Alloc& __a); 4106 4107 template<class _Alloc, class _A0> 4108 static shared_ptr<_Tp> 4109 allocate_shared(const _Alloc& __a, _A0& __a0); 4110 4111 template<class _Alloc, class _A0, class _A1> 4112 static shared_ptr<_Tp> 4113 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); 4114 4115 template<class _Alloc, class _A0, class _A1, class _A2> 4116 static shared_ptr<_Tp> 4117 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); 4118 4119#endif // _LIBCPP_HAS_NO_VARIADICS 4120 4121private: 4122 4123 template <class _Yp> 4124 _LIBCPP_INLINE_VISIBILITY 4125 void 4126 __enable_weak_this(const enable_shared_from_this<_Yp>* __e) _NOEXCEPT 4127 { 4128 if (__e) 4129 { 4130 __e->__weak_this_.__ptr_ = const_cast<_Yp*>(static_cast<const _Yp*>(__e)); 4131 __e->__weak_this_.__cntrl_ = __cntrl_; 4132 __cntrl_->__add_weak(); 4133 } 4134 } 4135 4136 _LIBCPP_INLINE_VISIBILITY 4137 void __enable_weak_this(const volatile void*) _NOEXCEPT {} 4138 4139 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr; 4140 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 4141}; 4142 4143template<class _Tp> 4144inline 4145_LIBCPP_CONSTEXPR 4146shared_ptr<_Tp>::shared_ptr() _NOEXCEPT 4147 : __ptr_(0), 4148 __cntrl_(0) 4149{ 4150} 4151 4152template<class _Tp> 4153inline 4154_LIBCPP_CONSTEXPR 4155shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT 4156 : __ptr_(0), 4157 __cntrl_(0) 4158{ 4159} 4160 4161template<class _Tp> 4162template<class _Yp> 4163shared_ptr<_Tp>::shared_ptr(_Yp* __p, 4164 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4165 : __ptr_(__p) 4166{ 4167 unique_ptr<_Yp> __hold(__p); 4168 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4169 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), allocator<_Yp>()); 4170 __hold.release(); 4171 __enable_weak_this(__p); 4172} 4173 4174template<class _Tp> 4175template<class _Yp, class _Dp> 4176shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, 4177 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4178 : __ptr_(__p) 4179{ 4180#ifndef _LIBCPP_NO_EXCEPTIONS 4181 try 4182 { 4183#endif // _LIBCPP_NO_EXCEPTIONS 4184 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4185 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Yp>()); 4186 __enable_weak_this(__p); 4187#ifndef _LIBCPP_NO_EXCEPTIONS 4188 } 4189 catch (...) 4190 { 4191 __d(__p); 4192 throw; 4193 } 4194#endif // _LIBCPP_NO_EXCEPTIONS 4195} 4196 4197template<class _Tp> 4198template<class _Dp> 4199shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) 4200 : __ptr_(0) 4201{ 4202#ifndef _LIBCPP_NO_EXCEPTIONS 4203 try 4204 { 4205#endif // _LIBCPP_NO_EXCEPTIONS 4206 typedef __shared_ptr_pointer<nullptr_t, _Dp, allocator<_Tp> > _CntrlBlk; 4207 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Tp>()); 4208#ifndef _LIBCPP_NO_EXCEPTIONS 4209 } 4210 catch (...) 4211 { 4212 __d(__p); 4213 throw; 4214 } 4215#endif // _LIBCPP_NO_EXCEPTIONS 4216} 4217 4218template<class _Tp> 4219template<class _Yp, class _Dp, class _Alloc> 4220shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 4221 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4222 : __ptr_(__p) 4223{ 4224#ifndef _LIBCPP_NO_EXCEPTIONS 4225 try 4226 { 4227#endif // _LIBCPP_NO_EXCEPTIONS 4228 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; 4229 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4230 typedef __allocator_destructor<_A2> _D2; 4231 _A2 __a2(__a); 4232 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4233 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4234 _CntrlBlk(__p, __d, __a); 4235 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4236 __enable_weak_this(__p); 4237#ifndef _LIBCPP_NO_EXCEPTIONS 4238 } 4239 catch (...) 4240 { 4241 __d(__p); 4242 throw; 4243 } 4244#endif // _LIBCPP_NO_EXCEPTIONS 4245} 4246 4247template<class _Tp> 4248template<class _Dp, class _Alloc> 4249shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) 4250 : __ptr_(0) 4251{ 4252#ifndef _LIBCPP_NO_EXCEPTIONS 4253 try 4254 { 4255#endif // _LIBCPP_NO_EXCEPTIONS 4256 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; 4257 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4258 typedef __allocator_destructor<_A2> _D2; 4259 _A2 __a2(__a); 4260 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4261 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4262 _CntrlBlk(__p, __d, __a); 4263 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4264#ifndef _LIBCPP_NO_EXCEPTIONS 4265 } 4266 catch (...) 4267 { 4268 __d(__p); 4269 throw; 4270 } 4271#endif // _LIBCPP_NO_EXCEPTIONS 4272} 4273 4274template<class _Tp> 4275template<class _Yp> 4276inline 4277shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT 4278 : __ptr_(__p), 4279 __cntrl_(__r.__cntrl_) 4280{ 4281 if (__cntrl_) 4282 __cntrl_->__add_shared(); 4283} 4284 4285template<class _Tp> 4286inline 4287shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT 4288 : __ptr_(__r.__ptr_), 4289 __cntrl_(__r.__cntrl_) 4290{ 4291 if (__cntrl_) 4292 __cntrl_->__add_shared(); 4293} 4294 4295template<class _Tp> 4296template<class _Yp> 4297inline 4298shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, 4299 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4300 _NOEXCEPT 4301 : __ptr_(__r.__ptr_), 4302 __cntrl_(__r.__cntrl_) 4303{ 4304 if (__cntrl_) 4305 __cntrl_->__add_shared(); 4306} 4307 4308#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4309 4310template<class _Tp> 4311inline 4312shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT 4313 : __ptr_(__r.__ptr_), 4314 __cntrl_(__r.__cntrl_) 4315{ 4316 __r.__ptr_ = 0; 4317 __r.__cntrl_ = 0; 4318} 4319 4320template<class _Tp> 4321template<class _Yp> 4322inline 4323shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, 4324 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4325 _NOEXCEPT 4326 : __ptr_(__r.__ptr_), 4327 __cntrl_(__r.__cntrl_) 4328{ 4329 __r.__ptr_ = 0; 4330 __r.__cntrl_ = 0; 4331} 4332 4333#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4334 4335template<class _Tp> 4336template<class _Yp> 4337#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4338shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r, 4339#else 4340shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r, 4341#endif 4342 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4343 : __ptr_(__r.get()) 4344{ 4345 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4346 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); 4347 __enable_weak_this(__r.get()); 4348 __r.release(); 4349} 4350 4351template<class _Tp> 4352template <class _Yp, class _Dp> 4353#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4354shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4355#else 4356shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4357#endif 4358 typename enable_if 4359 < 4360 !is_lvalue_reference<_Dp>::value && 4361 !is_array<_Yp>::value && 4362 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4363 __nat 4364 >::type) 4365 : __ptr_(__r.get()) 4366{ 4367#if _LIBCPP_STD_VER > 11 4368 if (__ptr_ == nullptr) 4369 __cntrl_ = nullptr; 4370 else 4371#endif 4372 { 4373 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4374 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), allocator<_Yp>()); 4375 __enable_weak_this(__r.get()); 4376 } 4377 __r.release(); 4378} 4379 4380template<class _Tp> 4381template <class _Yp, class _Dp> 4382#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4383shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4384#else 4385shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4386#endif 4387 typename enable_if 4388 < 4389 is_lvalue_reference<_Dp>::value && 4390 !is_array<_Yp>::value && 4391 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4392 __nat 4393 >::type) 4394 : __ptr_(__r.get()) 4395{ 4396#if _LIBCPP_STD_VER > 11 4397 if (__ptr_ == nullptr) 4398 __cntrl_ = nullptr; 4399 else 4400#endif 4401 { 4402 typedef __shared_ptr_pointer<_Yp*, 4403 reference_wrapper<typename remove_reference<_Dp>::type>, 4404 allocator<_Yp> > _CntrlBlk; 4405 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), allocator<_Yp>()); 4406 __enable_weak_this(__r.get()); 4407 } 4408 __r.release(); 4409} 4410 4411#ifndef _LIBCPP_HAS_NO_VARIADICS 4412 4413template<class _Tp> 4414template<class ..._Args> 4415shared_ptr<_Tp> 4416shared_ptr<_Tp>::make_shared(_Args&& ...__args) 4417{ 4418 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4419 typedef allocator<_CntrlBlk> _A2; 4420 typedef __allocator_destructor<_A2> _D2; 4421 _A2 __a2; 4422 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4423 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...); 4424 shared_ptr<_Tp> __r; 4425 __r.__ptr_ = __hold2.get()->get(); 4426 __r.__cntrl_ = __hold2.release(); 4427 __r.__enable_weak_this(__r.__ptr_); 4428 return __r; 4429} 4430 4431template<class _Tp> 4432template<class _Alloc, class ..._Args> 4433shared_ptr<_Tp> 4434shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) 4435{ 4436 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4437 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4438 typedef __allocator_destructor<_A2> _D2; 4439 _A2 __a2(__a); 4440 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4441 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4442 _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...); 4443 shared_ptr<_Tp> __r; 4444 __r.__ptr_ = __hold2.get()->get(); 4445 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4446 __r.__enable_weak_this(__r.__ptr_); 4447 return __r; 4448} 4449 4450#else // _LIBCPP_HAS_NO_VARIADICS 4451 4452template<class _Tp> 4453shared_ptr<_Tp> 4454shared_ptr<_Tp>::make_shared() 4455{ 4456 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4457 typedef allocator<_CntrlBlk> _Alloc2; 4458 typedef __allocator_destructor<_Alloc2> _D2; 4459 _Alloc2 __alloc2; 4460 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4461 ::new(__hold2.get()) _CntrlBlk(__alloc2); 4462 shared_ptr<_Tp> __r; 4463 __r.__ptr_ = __hold2.get()->get(); 4464 __r.__cntrl_ = __hold2.release(); 4465 __r.__enable_weak_this(__r.__ptr_); 4466 return __r; 4467} 4468 4469template<class _Tp> 4470template<class _A0> 4471shared_ptr<_Tp> 4472shared_ptr<_Tp>::make_shared(_A0& __a0) 4473{ 4474 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4475 typedef allocator<_CntrlBlk> _Alloc2; 4476 typedef __allocator_destructor<_Alloc2> _D2; 4477 _Alloc2 __alloc2; 4478 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4479 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); 4480 shared_ptr<_Tp> __r; 4481 __r.__ptr_ = __hold2.get()->get(); 4482 __r.__cntrl_ = __hold2.release(); 4483 __r.__enable_weak_this(__r.__ptr_); 4484 return __r; 4485} 4486 4487template<class _Tp> 4488template<class _A0, class _A1> 4489shared_ptr<_Tp> 4490shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) 4491{ 4492 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4493 typedef allocator<_CntrlBlk> _Alloc2; 4494 typedef __allocator_destructor<_Alloc2> _D2; 4495 _Alloc2 __alloc2; 4496 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4497 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); 4498 shared_ptr<_Tp> __r; 4499 __r.__ptr_ = __hold2.get()->get(); 4500 __r.__cntrl_ = __hold2.release(); 4501 __r.__enable_weak_this(__r.__ptr_); 4502 return __r; 4503} 4504 4505template<class _Tp> 4506template<class _A0, class _A1, class _A2> 4507shared_ptr<_Tp> 4508shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4509{ 4510 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4511 typedef allocator<_CntrlBlk> _Alloc2; 4512 typedef __allocator_destructor<_Alloc2> _D2; 4513 _Alloc2 __alloc2; 4514 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4515 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); 4516 shared_ptr<_Tp> __r; 4517 __r.__ptr_ = __hold2.get()->get(); 4518 __r.__cntrl_ = __hold2.release(); 4519 __r.__enable_weak_this(__r.__ptr_); 4520 return __r; 4521} 4522 4523template<class _Tp> 4524template<class _Alloc> 4525shared_ptr<_Tp> 4526shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) 4527{ 4528 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4529 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4530 typedef __allocator_destructor<_Alloc2> _D2; 4531 _Alloc2 __alloc2(__a); 4532 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4533 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4534 _CntrlBlk(__a); 4535 shared_ptr<_Tp> __r; 4536 __r.__ptr_ = __hold2.get()->get(); 4537 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4538 __r.__enable_weak_this(__r.__ptr_); 4539 return __r; 4540} 4541 4542template<class _Tp> 4543template<class _Alloc, class _A0> 4544shared_ptr<_Tp> 4545shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) 4546{ 4547 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4548 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4549 typedef __allocator_destructor<_Alloc2> _D2; 4550 _Alloc2 __alloc2(__a); 4551 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4552 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4553 _CntrlBlk(__a, __a0); 4554 shared_ptr<_Tp> __r; 4555 __r.__ptr_ = __hold2.get()->get(); 4556 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4557 __r.__enable_weak_this(__r.__ptr_); 4558 return __r; 4559} 4560 4561template<class _Tp> 4562template<class _Alloc, class _A0, class _A1> 4563shared_ptr<_Tp> 4564shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4565{ 4566 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4567 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4568 typedef __allocator_destructor<_Alloc2> _D2; 4569 _Alloc2 __alloc2(__a); 4570 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4571 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4572 _CntrlBlk(__a, __a0, __a1); 4573 shared_ptr<_Tp> __r; 4574 __r.__ptr_ = __hold2.get()->get(); 4575 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4576 __r.__enable_weak_this(__r.__ptr_); 4577 return __r; 4578} 4579 4580template<class _Tp> 4581template<class _Alloc, class _A0, class _A1, class _A2> 4582shared_ptr<_Tp> 4583shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4584{ 4585 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4586 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4587 typedef __allocator_destructor<_Alloc2> _D2; 4588 _Alloc2 __alloc2(__a); 4589 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4590 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4591 _CntrlBlk(__a, __a0, __a1, __a2); 4592 shared_ptr<_Tp> __r; 4593 __r.__ptr_ = __hold2.get()->get(); 4594 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4595 __r.__enable_weak_this(__r.__ptr_); 4596 return __r; 4597} 4598 4599#endif // _LIBCPP_HAS_NO_VARIADICS 4600 4601template<class _Tp> 4602shared_ptr<_Tp>::~shared_ptr() 4603{ 4604 if (__cntrl_) 4605 __cntrl_->__release_shared(); 4606} 4607 4608template<class _Tp> 4609inline 4610shared_ptr<_Tp>& 4611shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT 4612{ 4613 shared_ptr(__r).swap(*this); 4614 return *this; 4615} 4616 4617template<class _Tp> 4618template<class _Yp> 4619inline 4620typename enable_if 4621< 4622 is_convertible<_Yp*, _Tp*>::value, 4623 shared_ptr<_Tp>& 4624>::type 4625shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT 4626{ 4627 shared_ptr(__r).swap(*this); 4628 return *this; 4629} 4630 4631#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4632 4633template<class _Tp> 4634inline 4635shared_ptr<_Tp>& 4636shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT 4637{ 4638 shared_ptr(_VSTD::move(__r)).swap(*this); 4639 return *this; 4640} 4641 4642template<class _Tp> 4643template<class _Yp> 4644inline 4645typename enable_if 4646< 4647 is_convertible<_Yp*, _Tp*>::value, 4648 shared_ptr<_Tp>& 4649>::type 4650shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) 4651{ 4652 shared_ptr(_VSTD::move(__r)).swap(*this); 4653 return *this; 4654} 4655 4656template<class _Tp> 4657template<class _Yp> 4658inline 4659typename enable_if 4660< 4661 !is_array<_Yp>::value && 4662 is_convertible<_Yp*, _Tp*>::value, 4663 shared_ptr<_Tp> 4664>::type& 4665shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) 4666{ 4667 shared_ptr(_VSTD::move(__r)).swap(*this); 4668 return *this; 4669} 4670 4671template<class _Tp> 4672template <class _Yp, class _Dp> 4673inline 4674typename enable_if 4675< 4676 !is_array<_Yp>::value && 4677 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4678 shared_ptr<_Tp>& 4679>::type 4680shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) 4681{ 4682 shared_ptr(_VSTD::move(__r)).swap(*this); 4683 return *this; 4684} 4685 4686#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4687 4688template<class _Tp> 4689template<class _Yp> 4690inline _LIBCPP_INLINE_VISIBILITY 4691typename enable_if 4692< 4693 !is_array<_Yp>::value && 4694 is_convertible<_Yp*, _Tp*>::value, 4695 shared_ptr<_Tp>& 4696>::type 4697shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) 4698{ 4699 shared_ptr(__r).swap(*this); 4700 return *this; 4701} 4702 4703template<class _Tp> 4704template <class _Yp, class _Dp> 4705inline _LIBCPP_INLINE_VISIBILITY 4706typename enable_if 4707< 4708 !is_array<_Yp>::value && 4709 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4710 shared_ptr<_Tp>& 4711>::type 4712shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) 4713{ 4714 shared_ptr(_VSTD::move(__r)).swap(*this); 4715 return *this; 4716} 4717 4718#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4719 4720template<class _Tp> 4721inline 4722void 4723shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT 4724{ 4725 _VSTD::swap(__ptr_, __r.__ptr_); 4726 _VSTD::swap(__cntrl_, __r.__cntrl_); 4727} 4728 4729template<class _Tp> 4730inline 4731void 4732shared_ptr<_Tp>::reset() _NOEXCEPT 4733{ 4734 shared_ptr().swap(*this); 4735} 4736 4737template<class _Tp> 4738template<class _Yp> 4739inline 4740typename enable_if 4741< 4742 is_convertible<_Yp*, _Tp*>::value, 4743 void 4744>::type 4745shared_ptr<_Tp>::reset(_Yp* __p) 4746{ 4747 shared_ptr(__p).swap(*this); 4748} 4749 4750template<class _Tp> 4751template<class _Yp, class _Dp> 4752inline 4753typename enable_if 4754< 4755 is_convertible<_Yp*, _Tp*>::value, 4756 void 4757>::type 4758shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) 4759{ 4760 shared_ptr(__p, __d).swap(*this); 4761} 4762 4763template<class _Tp> 4764template<class _Yp, class _Dp, class _Alloc> 4765inline 4766typename enable_if 4767< 4768 is_convertible<_Yp*, _Tp*>::value, 4769 void 4770>::type 4771shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) 4772{ 4773 shared_ptr(__p, __d, __a).swap(*this); 4774} 4775 4776#ifndef _LIBCPP_HAS_NO_VARIADICS 4777 4778template<class _Tp, class ..._Args> 4779inline _LIBCPP_INLINE_VISIBILITY 4780typename enable_if 4781< 4782 !is_array<_Tp>::value, 4783 shared_ptr<_Tp> 4784>::type 4785make_shared(_Args&& ...__args) 4786{ 4787 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...); 4788} 4789 4790template<class _Tp, class _Alloc, class ..._Args> 4791inline _LIBCPP_INLINE_VISIBILITY 4792typename enable_if 4793< 4794 !is_array<_Tp>::value, 4795 shared_ptr<_Tp> 4796>::type 4797allocate_shared(const _Alloc& __a, _Args&& ...__args) 4798{ 4799 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...); 4800} 4801 4802#else // _LIBCPP_HAS_NO_VARIADICS 4803 4804template<class _Tp> 4805inline _LIBCPP_INLINE_VISIBILITY 4806shared_ptr<_Tp> 4807make_shared() 4808{ 4809 return shared_ptr<_Tp>::make_shared(); 4810} 4811 4812template<class _Tp, class _A0> 4813inline _LIBCPP_INLINE_VISIBILITY 4814shared_ptr<_Tp> 4815make_shared(_A0& __a0) 4816{ 4817 return shared_ptr<_Tp>::make_shared(__a0); 4818} 4819 4820template<class _Tp, class _A0, class _A1> 4821inline _LIBCPP_INLINE_VISIBILITY 4822shared_ptr<_Tp> 4823make_shared(_A0& __a0, _A1& __a1) 4824{ 4825 return shared_ptr<_Tp>::make_shared(__a0, __a1); 4826} 4827 4828template<class _Tp, class _A0, class _A1, class _A2> 4829inline _LIBCPP_INLINE_VISIBILITY 4830shared_ptr<_Tp> 4831make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4832{ 4833 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); 4834} 4835 4836template<class _Tp, class _Alloc> 4837inline _LIBCPP_INLINE_VISIBILITY 4838shared_ptr<_Tp> 4839allocate_shared(const _Alloc& __a) 4840{ 4841 return shared_ptr<_Tp>::allocate_shared(__a); 4842} 4843 4844template<class _Tp, class _Alloc, class _A0> 4845inline _LIBCPP_INLINE_VISIBILITY 4846shared_ptr<_Tp> 4847allocate_shared(const _Alloc& __a, _A0& __a0) 4848{ 4849 return shared_ptr<_Tp>::allocate_shared(__a, __a0); 4850} 4851 4852template<class _Tp, class _Alloc, class _A0, class _A1> 4853inline _LIBCPP_INLINE_VISIBILITY 4854shared_ptr<_Tp> 4855allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4856{ 4857 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); 4858} 4859 4860template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> 4861inline _LIBCPP_INLINE_VISIBILITY 4862shared_ptr<_Tp> 4863allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4864{ 4865 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); 4866} 4867 4868#endif // _LIBCPP_HAS_NO_VARIADICS 4869 4870template<class _Tp, class _Up> 4871inline _LIBCPP_INLINE_VISIBILITY 4872bool 4873operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4874{ 4875 return __x.get() == __y.get(); 4876} 4877 4878template<class _Tp, class _Up> 4879inline _LIBCPP_INLINE_VISIBILITY 4880bool 4881operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4882{ 4883 return !(__x == __y); 4884} 4885 4886template<class _Tp, class _Up> 4887inline _LIBCPP_INLINE_VISIBILITY 4888bool 4889operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4890{ 4891 typedef typename common_type<_Tp*, _Up*>::type _Vp; 4892 return less<_Vp>()(__x.get(), __y.get()); 4893} 4894 4895template<class _Tp, class _Up> 4896inline _LIBCPP_INLINE_VISIBILITY 4897bool 4898operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4899{ 4900 return __y < __x; 4901} 4902 4903template<class _Tp, class _Up> 4904inline _LIBCPP_INLINE_VISIBILITY 4905bool 4906operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4907{ 4908 return !(__y < __x); 4909} 4910 4911template<class _Tp, class _Up> 4912inline _LIBCPP_INLINE_VISIBILITY 4913bool 4914operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4915{ 4916 return !(__x < __y); 4917} 4918 4919template<class _Tp> 4920inline _LIBCPP_INLINE_VISIBILITY 4921bool 4922operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4923{ 4924 return !__x; 4925} 4926 4927template<class _Tp> 4928inline _LIBCPP_INLINE_VISIBILITY 4929bool 4930operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4931{ 4932 return !__x; 4933} 4934 4935template<class _Tp> 4936inline _LIBCPP_INLINE_VISIBILITY 4937bool 4938operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4939{ 4940 return static_cast<bool>(__x); 4941} 4942 4943template<class _Tp> 4944inline _LIBCPP_INLINE_VISIBILITY 4945bool 4946operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4947{ 4948 return static_cast<bool>(__x); 4949} 4950 4951template<class _Tp> 4952inline _LIBCPP_INLINE_VISIBILITY 4953bool 4954operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4955{ 4956 return less<_Tp*>()(__x.get(), nullptr); 4957} 4958 4959template<class _Tp> 4960inline _LIBCPP_INLINE_VISIBILITY 4961bool 4962operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4963{ 4964 return less<_Tp*>()(nullptr, __x.get()); 4965} 4966 4967template<class _Tp> 4968inline _LIBCPP_INLINE_VISIBILITY 4969bool 4970operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4971{ 4972 return nullptr < __x; 4973} 4974 4975template<class _Tp> 4976inline _LIBCPP_INLINE_VISIBILITY 4977bool 4978operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4979{ 4980 return __x < nullptr; 4981} 4982 4983template<class _Tp> 4984inline _LIBCPP_INLINE_VISIBILITY 4985bool 4986operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4987{ 4988 return !(nullptr < __x); 4989} 4990 4991template<class _Tp> 4992inline _LIBCPP_INLINE_VISIBILITY 4993bool 4994operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4995{ 4996 return !(__x < nullptr); 4997} 4998 4999template<class _Tp> 5000inline _LIBCPP_INLINE_VISIBILITY 5001bool 5002operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 5003{ 5004 return !(__x < nullptr); 5005} 5006 5007template<class _Tp> 5008inline _LIBCPP_INLINE_VISIBILITY 5009bool 5010operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 5011{ 5012 return !(nullptr < __x); 5013} 5014 5015template<class _Tp> 5016inline _LIBCPP_INLINE_VISIBILITY 5017void 5018swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT 5019{ 5020 __x.swap(__y); 5021} 5022 5023template<class _Tp, class _Up> 5024inline _LIBCPP_INLINE_VISIBILITY 5025typename enable_if 5026< 5027 !is_array<_Tp>::value && !is_array<_Up>::value, 5028 shared_ptr<_Tp> 5029>::type 5030static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 5031{ 5032 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); 5033} 5034 5035template<class _Tp, class _Up> 5036inline _LIBCPP_INLINE_VISIBILITY 5037typename enable_if 5038< 5039 !is_array<_Tp>::value && !is_array<_Up>::value, 5040 shared_ptr<_Tp> 5041>::type 5042dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 5043{ 5044 _Tp* __p = dynamic_cast<_Tp*>(__r.get()); 5045 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); 5046} 5047 5048template<class _Tp, class _Up> 5049typename enable_if 5050< 5051 is_array<_Tp>::value == is_array<_Up>::value, 5052 shared_ptr<_Tp> 5053>::type 5054const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 5055{ 5056 typedef typename remove_extent<_Tp>::type _RTp; 5057 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get())); 5058} 5059 5060#ifndef _LIBCPP_NO_RTTI 5061 5062template<class _Dp, class _Tp> 5063inline _LIBCPP_INLINE_VISIBILITY 5064_Dp* 5065get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT 5066{ 5067 return __p.template __get_deleter<_Dp>(); 5068} 5069 5070#endif // _LIBCPP_NO_RTTI 5071 5072template<class _Tp> 5073class _LIBCPP_TYPE_VIS_ONLY weak_ptr 5074{ 5075public: 5076 typedef _Tp element_type; 5077private: 5078 element_type* __ptr_; 5079 __shared_weak_count* __cntrl_; 5080 5081public: 5082 _LIBCPP_INLINE_VISIBILITY 5083 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT; 5084 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r, 5085 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 5086 _NOEXCEPT; 5087 _LIBCPP_INLINE_VISIBILITY 5088 weak_ptr(weak_ptr const& __r) _NOEXCEPT; 5089 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r, 5090 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 5091 _NOEXCEPT; 5092 5093#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5094 _LIBCPP_INLINE_VISIBILITY 5095 weak_ptr(weak_ptr&& __r) _NOEXCEPT; 5096 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r, 5097 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 5098 _NOEXCEPT; 5099#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5100 ~weak_ptr(); 5101 5102 _LIBCPP_INLINE_VISIBILITY 5103 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT; 5104 template<class _Yp> 5105 typename enable_if 5106 < 5107 is_convertible<_Yp*, element_type*>::value, 5108 weak_ptr& 5109 >::type 5110 _LIBCPP_INLINE_VISIBILITY 5111 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT; 5112 5113#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5114 5115 _LIBCPP_INLINE_VISIBILITY 5116 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT; 5117 template<class _Yp> 5118 typename enable_if 5119 < 5120 is_convertible<_Yp*, element_type*>::value, 5121 weak_ptr& 5122 >::type 5123 _LIBCPP_INLINE_VISIBILITY 5124 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT; 5125 5126#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5127 5128 template<class _Yp> 5129 typename enable_if 5130 < 5131 is_convertible<_Yp*, element_type*>::value, 5132 weak_ptr& 5133 >::type 5134 _LIBCPP_INLINE_VISIBILITY 5135 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT; 5136 5137 _LIBCPP_INLINE_VISIBILITY 5138 void swap(weak_ptr& __r) _NOEXCEPT; 5139 _LIBCPP_INLINE_VISIBILITY 5140 void reset() _NOEXCEPT; 5141 5142 _LIBCPP_INLINE_VISIBILITY 5143 long use_count() const _NOEXCEPT 5144 {return __cntrl_ ? __cntrl_->use_count() : 0;} 5145 _LIBCPP_INLINE_VISIBILITY 5146 bool expired() const _NOEXCEPT 5147 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} 5148 shared_ptr<_Tp> lock() const _NOEXCEPT; 5149 template<class _Up> 5150 _LIBCPP_INLINE_VISIBILITY 5151 bool owner_before(const shared_ptr<_Up>& __r) const 5152 {return __cntrl_ < __r.__cntrl_;} 5153 template<class _Up> 5154 _LIBCPP_INLINE_VISIBILITY 5155 bool owner_before(const weak_ptr<_Up>& __r) const 5156 {return __cntrl_ < __r.__cntrl_;} 5157 5158 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 5159 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr; 5160}; 5161 5162template<class _Tp> 5163inline 5164_LIBCPP_CONSTEXPR 5165weak_ptr<_Tp>::weak_ptr() _NOEXCEPT 5166 : __ptr_(0), 5167 __cntrl_(0) 5168{ 5169} 5170 5171template<class _Tp> 5172inline 5173weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT 5174 : __ptr_(__r.__ptr_), 5175 __cntrl_(__r.__cntrl_) 5176{ 5177 if (__cntrl_) 5178 __cntrl_->__add_weak(); 5179} 5180 5181template<class _Tp> 5182template<class _Yp> 5183inline 5184weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, 5185 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5186 _NOEXCEPT 5187 : __ptr_(__r.__ptr_), 5188 __cntrl_(__r.__cntrl_) 5189{ 5190 if (__cntrl_) 5191 __cntrl_->__add_weak(); 5192} 5193 5194template<class _Tp> 5195template<class _Yp> 5196inline 5197weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, 5198 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5199 _NOEXCEPT 5200 : __ptr_(__r.__ptr_), 5201 __cntrl_(__r.__cntrl_) 5202{ 5203 if (__cntrl_) 5204 __cntrl_->__add_weak(); 5205} 5206 5207#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5208 5209template<class _Tp> 5210inline 5211weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT 5212 : __ptr_(__r.__ptr_), 5213 __cntrl_(__r.__cntrl_) 5214{ 5215 __r.__ptr_ = 0; 5216 __r.__cntrl_ = 0; 5217} 5218 5219template<class _Tp> 5220template<class _Yp> 5221inline 5222weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r, 5223 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5224 _NOEXCEPT 5225 : __ptr_(__r.__ptr_), 5226 __cntrl_(__r.__cntrl_) 5227{ 5228 __r.__ptr_ = 0; 5229 __r.__cntrl_ = 0; 5230} 5231 5232#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5233 5234template<class _Tp> 5235weak_ptr<_Tp>::~weak_ptr() 5236{ 5237 if (__cntrl_) 5238 __cntrl_->__release_weak(); 5239} 5240 5241template<class _Tp> 5242inline 5243weak_ptr<_Tp>& 5244weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT 5245{ 5246 weak_ptr(__r).swap(*this); 5247 return *this; 5248} 5249 5250template<class _Tp> 5251template<class _Yp> 5252inline 5253typename enable_if 5254< 5255 is_convertible<_Yp*, _Tp*>::value, 5256 weak_ptr<_Tp>& 5257>::type 5258weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT 5259{ 5260 weak_ptr(__r).swap(*this); 5261 return *this; 5262} 5263 5264#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5265 5266template<class _Tp> 5267inline 5268weak_ptr<_Tp>& 5269weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT 5270{ 5271 weak_ptr(_VSTD::move(__r)).swap(*this); 5272 return *this; 5273} 5274 5275template<class _Tp> 5276template<class _Yp> 5277inline 5278typename enable_if 5279< 5280 is_convertible<_Yp*, _Tp*>::value, 5281 weak_ptr<_Tp>& 5282>::type 5283weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT 5284{ 5285 weak_ptr(_VSTD::move(__r)).swap(*this); 5286 return *this; 5287} 5288 5289#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5290 5291template<class _Tp> 5292template<class _Yp> 5293inline 5294typename enable_if 5295< 5296 is_convertible<_Yp*, _Tp*>::value, 5297 weak_ptr<_Tp>& 5298>::type 5299weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT 5300{ 5301 weak_ptr(__r).swap(*this); 5302 return *this; 5303} 5304 5305template<class _Tp> 5306inline 5307void 5308weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT 5309{ 5310 _VSTD::swap(__ptr_, __r.__ptr_); 5311 _VSTD::swap(__cntrl_, __r.__cntrl_); 5312} 5313 5314template<class _Tp> 5315inline _LIBCPP_INLINE_VISIBILITY 5316void 5317swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT 5318{ 5319 __x.swap(__y); 5320} 5321 5322template<class _Tp> 5323inline 5324void 5325weak_ptr<_Tp>::reset() _NOEXCEPT 5326{ 5327 weak_ptr().swap(*this); 5328} 5329 5330template<class _Tp> 5331template<class _Yp> 5332shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, 5333 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 5334 : __ptr_(__r.__ptr_), 5335 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) 5336{ 5337 if (__cntrl_ == 0) 5338#ifndef _LIBCPP_NO_EXCEPTIONS 5339 throw bad_weak_ptr(); 5340#else 5341 assert(!"bad_weak_ptr"); 5342#endif 5343} 5344 5345template<class _Tp> 5346shared_ptr<_Tp> 5347weak_ptr<_Tp>::lock() const _NOEXCEPT 5348{ 5349 shared_ptr<_Tp> __r; 5350 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; 5351 if (__r.__cntrl_) 5352 __r.__ptr_ = __ptr_; 5353 return __r; 5354} 5355 5356#if _LIBCPP_STD_VER > 14 5357template <class _Tp = void> struct owner_less; 5358#else 5359template <class _Tp> struct owner_less; 5360#endif 5361 5362template <class _Tp> 5363struct _LIBCPP_TYPE_VIS_ONLY owner_less<shared_ptr<_Tp> > 5364 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> 5365{ 5366 typedef bool result_type; 5367 _LIBCPP_INLINE_VISIBILITY 5368 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5369 {return __x.owner_before(__y);} 5370 _LIBCPP_INLINE_VISIBILITY 5371 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5372 {return __x.owner_before(__y);} 5373 _LIBCPP_INLINE_VISIBILITY 5374 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5375 {return __x.owner_before(__y);} 5376}; 5377 5378template <class _Tp> 5379struct _LIBCPP_TYPE_VIS_ONLY owner_less<weak_ptr<_Tp> > 5380 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> 5381{ 5382 typedef bool result_type; 5383 _LIBCPP_INLINE_VISIBILITY 5384 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5385 {return __x.owner_before(__y);} 5386 _LIBCPP_INLINE_VISIBILITY 5387 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5388 {return __x.owner_before(__y);} 5389 _LIBCPP_INLINE_VISIBILITY 5390 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5391 {return __x.owner_before(__y);} 5392}; 5393 5394#if _LIBCPP_STD_VER > 14 5395template <> 5396struct _LIBCPP_TYPE_VIS_ONLY owner_less<void> 5397{ 5398 template <class _Tp, class _Up> 5399 _LIBCPP_INLINE_VISIBILITY 5400 bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const 5401 {return __x.owner_before(__y);} 5402 template <class _Tp, class _Up> 5403 _LIBCPP_INLINE_VISIBILITY 5404 bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const 5405 {return __x.owner_before(__y);} 5406 template <class _Tp, class _Up> 5407 _LIBCPP_INLINE_VISIBILITY 5408 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const 5409 {return __x.owner_before(__y);} 5410 template <class _Tp, class _Up> 5411 _LIBCPP_INLINE_VISIBILITY 5412 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const 5413 {return __x.owner_before(__y);} 5414 typedef void is_transparent; 5415}; 5416#endif 5417 5418template<class _Tp> 5419class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this 5420{ 5421 mutable weak_ptr<_Tp> __weak_this_; 5422protected: 5423 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 5424 enable_shared_from_this() _NOEXCEPT {} 5425 _LIBCPP_INLINE_VISIBILITY 5426 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {} 5427 _LIBCPP_INLINE_VISIBILITY 5428 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT 5429 {return *this;} 5430 _LIBCPP_INLINE_VISIBILITY 5431 ~enable_shared_from_this() {} 5432public: 5433 _LIBCPP_INLINE_VISIBILITY 5434 shared_ptr<_Tp> shared_from_this() 5435 {return shared_ptr<_Tp>(__weak_this_);} 5436 _LIBCPP_INLINE_VISIBILITY 5437 shared_ptr<_Tp const> shared_from_this() const 5438 {return shared_ptr<const _Tp>(__weak_this_);} 5439 5440 template <class _Up> friend class shared_ptr; 5441}; 5442 5443template <class _Tp> 5444struct _LIBCPP_TYPE_VIS_ONLY hash<shared_ptr<_Tp> > 5445{ 5446 typedef shared_ptr<_Tp> argument_type; 5447 typedef size_t result_type; 5448 _LIBCPP_INLINE_VISIBILITY 5449 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 5450 { 5451 return hash<_Tp*>()(__ptr.get()); 5452 } 5453}; 5454 5455template<class _CharT, class _Traits, class _Yp> 5456inline _LIBCPP_INLINE_VISIBILITY 5457basic_ostream<_CharT, _Traits>& 5458operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p); 5459 5460// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only 5461// enabled with clang. 5462#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS) 5463 5464class _LIBCPP_TYPE_VIS __sp_mut 5465{ 5466 void* __lx; 5467public: 5468 void lock() _NOEXCEPT; 5469 void unlock() _NOEXCEPT; 5470 5471private: 5472 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT; 5473 __sp_mut(const __sp_mut&); 5474 __sp_mut& operator=(const __sp_mut&); 5475 5476 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5477}; 5478 5479_LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5480 5481template <class _Tp> 5482inline _LIBCPP_INLINE_VISIBILITY 5483bool 5484atomic_is_lock_free(const shared_ptr<_Tp>*) 5485{ 5486 return false; 5487} 5488 5489template <class _Tp> 5490shared_ptr<_Tp> 5491atomic_load(const shared_ptr<_Tp>* __p) 5492{ 5493 __sp_mut& __m = __get_sp_mut(__p); 5494 __m.lock(); 5495 shared_ptr<_Tp> __q = *__p; 5496 __m.unlock(); 5497 return __q; 5498} 5499 5500template <class _Tp> 5501inline _LIBCPP_INLINE_VISIBILITY 5502shared_ptr<_Tp> 5503atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) 5504{ 5505 return atomic_load(__p); 5506} 5507 5508template <class _Tp> 5509void 5510atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5511{ 5512 __sp_mut& __m = __get_sp_mut(__p); 5513 __m.lock(); 5514 __p->swap(__r); 5515 __m.unlock(); 5516} 5517 5518template <class _Tp> 5519inline _LIBCPP_INLINE_VISIBILITY 5520void 5521atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5522{ 5523 atomic_store(__p, __r); 5524} 5525 5526template <class _Tp> 5527shared_ptr<_Tp> 5528atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5529{ 5530 __sp_mut& __m = __get_sp_mut(__p); 5531 __m.lock(); 5532 __p->swap(__r); 5533 __m.unlock(); 5534 return __r; 5535} 5536 5537template <class _Tp> 5538inline _LIBCPP_INLINE_VISIBILITY 5539shared_ptr<_Tp> 5540atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5541{ 5542 return atomic_exchange(__p, __r); 5543} 5544 5545template <class _Tp> 5546bool 5547atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5548{ 5549 __sp_mut& __m = __get_sp_mut(__p); 5550 __m.lock(); 5551 if (__p->__owner_equivalent(*__v)) 5552 { 5553 *__p = __w; 5554 __m.unlock(); 5555 return true; 5556 } 5557 *__v = *__p; 5558 __m.unlock(); 5559 return false; 5560} 5561 5562template <class _Tp> 5563inline _LIBCPP_INLINE_VISIBILITY 5564bool 5565atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5566{ 5567 return atomic_compare_exchange_strong(__p, __v, __w); 5568} 5569 5570template <class _Tp> 5571inline _LIBCPP_INLINE_VISIBILITY 5572bool 5573atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5574 shared_ptr<_Tp> __w, memory_order, memory_order) 5575{ 5576 return atomic_compare_exchange_strong(__p, __v, __w); 5577} 5578 5579template <class _Tp> 5580inline _LIBCPP_INLINE_VISIBILITY 5581bool 5582atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5583 shared_ptr<_Tp> __w, memory_order, memory_order) 5584{ 5585 return atomic_compare_exchange_weak(__p, __v, __w); 5586} 5587 5588#endif // defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS) 5589 5590//enum class 5591struct _LIBCPP_TYPE_VIS pointer_safety 5592{ 5593 enum __lx 5594 { 5595 relaxed, 5596 preferred, 5597 strict 5598 }; 5599 5600 __lx __v_; 5601 5602 _LIBCPP_INLINE_VISIBILITY 5603 pointer_safety(__lx __v) : __v_(__v) {} 5604 _LIBCPP_INLINE_VISIBILITY 5605 operator int() const {return __v_;} 5606}; 5607 5608_LIBCPP_FUNC_VIS void declare_reachable(void* __p); 5609_LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n); 5610_LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n); 5611_LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT; 5612_LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p); 5613 5614template <class _Tp> 5615inline _LIBCPP_INLINE_VISIBILITY 5616_Tp* 5617undeclare_reachable(_Tp* __p) 5618{ 5619 return static_cast<_Tp*>(__undeclare_reachable(__p)); 5620} 5621 5622_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); 5623 5624// --- Helper for container swap -- 5625template <typename _Alloc> 5626_LIBCPP_INLINE_VISIBILITY 5627void __swap_allocator(_Alloc & __a1, _Alloc & __a2) 5628#if _LIBCPP_STD_VER >= 14 5629 _NOEXCEPT 5630#else 5631 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5632#endif 5633{ 5634 __swap_allocator(__a1, __a2, 5635 integral_constant<bool, _VSTD::allocator_traits<_Alloc>::propagate_on_container_swap::value>()); 5636} 5637 5638template <typename _Alloc> 5639_LIBCPP_INLINE_VISIBILITY 5640void __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type) 5641#if _LIBCPP_STD_VER >= 14 5642 _NOEXCEPT 5643#else 5644 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5645#endif 5646{ 5647 using _VSTD::swap; 5648 swap(__a1, __a2); 5649} 5650 5651template <typename _Alloc> 5652_LIBCPP_INLINE_VISIBILITY 5653void __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {} 5654 5655template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> > 5656struct __noexcept_move_assign_container : public integral_constant<bool, 5657 _Traits::propagate_on_container_move_assignment::value 5658#if _LIBCPP_STD_VER > 14 5659 || _Traits::is_always_equal::value 5660#else 5661 && is_nothrow_move_assignable<_Alloc>::value 5662#endif 5663 > {}; 5664 5665_LIBCPP_END_NAMESPACE_STD 5666 5667#endif // _LIBCPP_MEMORY 5668