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 void 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 template <class _Pp> 2922 _LIBCPP_INLINE_VISIBILITY 2923 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, void>::type 2924 reset(_Pp __p) _NOEXCEPT 2925 { 2926 pointer __tmp = __ptr_.first(); 2927 __ptr_.first() = __p; 2928 if (__tmp) 2929 __ptr_.second()(__tmp); 2930 } 2931 _LIBCPP_INLINE_VISIBILITY void reset(nullptr_t = nullptr) _NOEXCEPT 2932 { 2933 pointer __tmp = __ptr_.first(); 2934 __ptr_.first() = nullptr; 2935 if (__tmp) 2936 __ptr_.second()(__tmp); 2937 } 2938 2939 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);} 2940private: 2941 2942#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2943 template <class _Up> 2944 explicit unique_ptr(_Up); 2945 template <class _Up> 2946 unique_ptr(_Up __u, 2947 typename conditional< 2948 is_reference<deleter_type>::value, 2949 deleter_type, 2950 typename add_lvalue_reference<const deleter_type>::type>::type, 2951 typename enable_if 2952 < 2953 is_convertible<_Up, pointer>::value, 2954 __nat 2955 >::type = __nat()); 2956#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2957}; 2958 2959template <class _Tp, class _Dp> 2960inline _LIBCPP_INLINE_VISIBILITY 2961void 2962swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} 2963 2964template <class _T1, class _D1, class _T2, class _D2> 2965inline _LIBCPP_INLINE_VISIBILITY 2966bool 2967operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} 2968 2969template <class _T1, class _D1, class _T2, class _D2> 2970inline _LIBCPP_INLINE_VISIBILITY 2971bool 2972operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} 2973 2974template <class _T1, class _D1, class _T2, class _D2> 2975inline _LIBCPP_INLINE_VISIBILITY 2976bool 2977operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) 2978{ 2979 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2980 typedef typename unique_ptr<_T2, _D2>::pointer _P2; 2981 typedef typename common_type<_P1, _P2>::type _Vp; 2982 return less<_Vp>()(__x.get(), __y.get()); 2983} 2984 2985template <class _T1, class _D1, class _T2, class _D2> 2986inline _LIBCPP_INLINE_VISIBILITY 2987bool 2988operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} 2989 2990template <class _T1, class _D1, class _T2, class _D2> 2991inline _LIBCPP_INLINE_VISIBILITY 2992bool 2993operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} 2994 2995template <class _T1, class _D1, class _T2, class _D2> 2996inline _LIBCPP_INLINE_VISIBILITY 2997bool 2998operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} 2999 3000template <class _T1, class _D1> 3001inline _LIBCPP_INLINE_VISIBILITY 3002bool 3003operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 3004{ 3005 return !__x; 3006} 3007 3008template <class _T1, class _D1> 3009inline _LIBCPP_INLINE_VISIBILITY 3010bool 3011operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 3012{ 3013 return !__x; 3014} 3015 3016template <class _T1, class _D1> 3017inline _LIBCPP_INLINE_VISIBILITY 3018bool 3019operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 3020{ 3021 return static_cast<bool>(__x); 3022} 3023 3024template <class _T1, class _D1> 3025inline _LIBCPP_INLINE_VISIBILITY 3026bool 3027operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 3028{ 3029 return static_cast<bool>(__x); 3030} 3031 3032template <class _T1, class _D1> 3033inline _LIBCPP_INLINE_VISIBILITY 3034bool 3035operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3036{ 3037 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 3038 return less<_P1>()(__x.get(), nullptr); 3039} 3040 3041template <class _T1, class _D1> 3042inline _LIBCPP_INLINE_VISIBILITY 3043bool 3044operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3045{ 3046 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 3047 return less<_P1>()(nullptr, __x.get()); 3048} 3049 3050template <class _T1, class _D1> 3051inline _LIBCPP_INLINE_VISIBILITY 3052bool 3053operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3054{ 3055 return nullptr < __x; 3056} 3057 3058template <class _T1, class _D1> 3059inline _LIBCPP_INLINE_VISIBILITY 3060bool 3061operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3062{ 3063 return __x < nullptr; 3064} 3065 3066template <class _T1, class _D1> 3067inline _LIBCPP_INLINE_VISIBILITY 3068bool 3069operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3070{ 3071 return !(nullptr < __x); 3072} 3073 3074template <class _T1, class _D1> 3075inline _LIBCPP_INLINE_VISIBILITY 3076bool 3077operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3078{ 3079 return !(__x < nullptr); 3080} 3081 3082template <class _T1, class _D1> 3083inline _LIBCPP_INLINE_VISIBILITY 3084bool 3085operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3086{ 3087 return !(__x < nullptr); 3088} 3089 3090template <class _T1, class _D1> 3091inline _LIBCPP_INLINE_VISIBILITY 3092bool 3093operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3094{ 3095 return !(nullptr < __x); 3096} 3097 3098#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3099 3100template <class _Tp, class _Dp> 3101inline _LIBCPP_INLINE_VISIBILITY 3102unique_ptr<_Tp, _Dp> 3103move(unique_ptr<_Tp, _Dp>& __t) 3104{ 3105 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t)); 3106} 3107 3108#endif 3109 3110#if _LIBCPP_STD_VER > 11 3111 3112template<class _Tp> 3113struct __unique_if 3114{ 3115 typedef unique_ptr<_Tp> __unique_single; 3116}; 3117 3118template<class _Tp> 3119struct __unique_if<_Tp[]> 3120{ 3121 typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; 3122}; 3123 3124template<class _Tp, size_t _Np> 3125struct __unique_if<_Tp[_Np]> 3126{ 3127 typedef void __unique_array_known_bound; 3128}; 3129 3130template<class _Tp, class... _Args> 3131inline _LIBCPP_INLINE_VISIBILITY 3132typename __unique_if<_Tp>::__unique_single 3133make_unique(_Args&&... __args) 3134{ 3135 return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...)); 3136} 3137 3138template<class _Tp> 3139inline _LIBCPP_INLINE_VISIBILITY 3140typename __unique_if<_Tp>::__unique_array_unknown_bound 3141make_unique(size_t __n) 3142{ 3143 typedef typename remove_extent<_Tp>::type _Up; 3144 return unique_ptr<_Tp>(new _Up[__n]()); 3145} 3146 3147template<class _Tp, class... _Args> 3148 typename __unique_if<_Tp>::__unique_array_known_bound 3149 make_unique(_Args&&...) = delete; 3150 3151#endif // _LIBCPP_STD_VER > 11 3152 3153template <class _Tp> struct hash; 3154 3155template <class _Size> 3156inline _LIBCPP_INLINE_VISIBILITY 3157_Size 3158__loadword(const void* __p) 3159{ 3160 _Size __r; 3161 std::memcpy(&__r, __p, sizeof(__r)); 3162 return __r; 3163} 3164 3165// We use murmur2 when size_t is 32 bits, and cityhash64 when size_t 3166// is 64 bits. This is because cityhash64 uses 64bit x 64bit 3167// multiplication, which can be very slow on 32-bit systems. 3168template <class _Size, size_t = sizeof(_Size)*__CHAR_BIT__> 3169struct __murmur2_or_cityhash; 3170 3171template <class _Size> 3172struct __murmur2_or_cityhash<_Size, 32> 3173{ 3174 _Size operator()(const void* __key, _Size __len); 3175}; 3176 3177// murmur2 3178template <class _Size> 3179_Size 3180__murmur2_or_cityhash<_Size, 32>::operator()(const void* __key, _Size __len) _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 3181{ 3182 const _Size __m = 0x5bd1e995; 3183 const _Size __r = 24; 3184 _Size __h = __len; 3185 const unsigned char* __data = static_cast<const unsigned char*>(__key); 3186 for (; __len >= 4; __data += 4, __len -= 4) 3187 { 3188 _Size __k = __loadword<_Size>(__data); 3189 __k *= __m; 3190 __k ^= __k >> __r; 3191 __k *= __m; 3192 __h *= __m; 3193 __h ^= __k; 3194 } 3195 switch (__len) 3196 { 3197 case 3: 3198 __h ^= __data[2] << 16; 3199 case 2: 3200 __h ^= __data[1] << 8; 3201 case 1: 3202 __h ^= __data[0]; 3203 __h *= __m; 3204 } 3205 __h ^= __h >> 13; 3206 __h *= __m; 3207 __h ^= __h >> 15; 3208 return __h; 3209} 3210 3211template <class _Size> 3212struct __murmur2_or_cityhash<_Size, 64> 3213{ 3214 _Size operator()(const void* __key, _Size __len); 3215 3216 private: 3217 // Some primes between 2^63 and 2^64. 3218 static const _Size __k0 = 0xc3a5c85c97cb3127ULL; 3219 static const _Size __k1 = 0xb492b66fbe98f273ULL; 3220 static const _Size __k2 = 0x9ae16a3b2f90404fULL; 3221 static const _Size __k3 = 0xc949d7c7509e6557ULL; 3222 3223 static _Size __rotate(_Size __val, int __shift) { 3224 return __shift == 0 ? __val : ((__val >> __shift) | (__val << (64 - __shift))); 3225 } 3226 3227 static _Size __rotate_by_at_least_1(_Size __val, int __shift) { 3228 return (__val >> __shift) | (__val << (64 - __shift)); 3229 } 3230 3231 static _Size __shift_mix(_Size __val) { 3232 return __val ^ (__val >> 47); 3233 } 3234 3235 static _Size __hash_len_16(_Size __u, _Size __v) { 3236 const _Size __mul = 0x9ddfea08eb382d69ULL; 3237 _Size __a = (__u ^ __v) * __mul; 3238 __a ^= (__a >> 47); 3239 _Size __b = (__v ^ __a) * __mul; 3240 __b ^= (__b >> 47); 3241 __b *= __mul; 3242 return __b; 3243 } 3244 3245 static _Size __hash_len_0_to_16(const char* __s, _Size __len) { 3246 if (__len > 8) { 3247 const _Size __a = __loadword<_Size>(__s); 3248 const _Size __b = __loadword<_Size>(__s + __len - 8); 3249 return __hash_len_16(__a, __rotate_by_at_least_1(__b + __len, __len)) ^ __b; 3250 } 3251 if (__len >= 4) { 3252 const uint32_t __a = __loadword<uint32_t>(__s); 3253 const uint32_t __b = __loadword<uint32_t>(__s + __len - 4); 3254 return __hash_len_16(__len + (__a << 3), __b); 3255 } 3256 if (__len > 0) { 3257 const unsigned char __a = __s[0]; 3258 const unsigned char __b = __s[__len >> 1]; 3259 const unsigned char __c = __s[__len - 1]; 3260 const uint32_t __y = static_cast<uint32_t>(__a) + 3261 (static_cast<uint32_t>(__b) << 8); 3262 const uint32_t __z = __len + (static_cast<uint32_t>(__c) << 2); 3263 return __shift_mix(__y * __k2 ^ __z * __k3) * __k2; 3264 } 3265 return __k2; 3266 } 3267 3268 static _Size __hash_len_17_to_32(const char *__s, _Size __len) { 3269 const _Size __a = __loadword<_Size>(__s) * __k1; 3270 const _Size __b = __loadword<_Size>(__s + 8); 3271 const _Size __c = __loadword<_Size>(__s + __len - 8) * __k2; 3272 const _Size __d = __loadword<_Size>(__s + __len - 16) * __k0; 3273 return __hash_len_16(__rotate(__a - __b, 43) + __rotate(__c, 30) + __d, 3274 __a + __rotate(__b ^ __k3, 20) - __c + __len); 3275 } 3276 3277 // Return a 16-byte hash for 48 bytes. Quick and dirty. 3278 // Callers do best to use "random-looking" values for a and b. 3279 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3280 _Size __w, _Size __x, _Size __y, _Size __z, _Size __a, _Size __b) { 3281 __a += __w; 3282 __b = __rotate(__b + __a + __z, 21); 3283 const _Size __c = __a; 3284 __a += __x; 3285 __a += __y; 3286 __b += __rotate(__a, 44); 3287 return pair<_Size, _Size>(__a + __z, __b + __c); 3288 } 3289 3290 // Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty. 3291 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3292 const char* __s, _Size __a, _Size __b) { 3293 return __weak_hash_len_32_with_seeds(__loadword<_Size>(__s), 3294 __loadword<_Size>(__s + 8), 3295 __loadword<_Size>(__s + 16), 3296 __loadword<_Size>(__s + 24), 3297 __a, 3298 __b); 3299 } 3300 3301 // Return an 8-byte hash for 33 to 64 bytes. 3302 static _Size __hash_len_33_to_64(const char *__s, size_t __len) { 3303 _Size __z = __loadword<_Size>(__s + 24); 3304 _Size __a = __loadword<_Size>(__s) + 3305 (__len + __loadword<_Size>(__s + __len - 16)) * __k0; 3306 _Size __b = __rotate(__a + __z, 52); 3307 _Size __c = __rotate(__a, 37); 3308 __a += __loadword<_Size>(__s + 8); 3309 __c += __rotate(__a, 7); 3310 __a += __loadword<_Size>(__s + 16); 3311 _Size __vf = __a + __z; 3312 _Size __vs = __b + __rotate(__a, 31) + __c; 3313 __a = __loadword<_Size>(__s + 16) + __loadword<_Size>(__s + __len - 32); 3314 __z += __loadword<_Size>(__s + __len - 8); 3315 __b = __rotate(__a + __z, 52); 3316 __c = __rotate(__a, 37); 3317 __a += __loadword<_Size>(__s + __len - 24); 3318 __c += __rotate(__a, 7); 3319 __a += __loadword<_Size>(__s + __len - 16); 3320 _Size __wf = __a + __z; 3321 _Size __ws = __b + __rotate(__a, 31) + __c; 3322 _Size __r = __shift_mix((__vf + __ws) * __k2 + (__wf + __vs) * __k0); 3323 return __shift_mix(__r * __k0 + __vs) * __k2; 3324 } 3325}; 3326 3327// cityhash64 3328template <class _Size> 3329_Size 3330__murmur2_or_cityhash<_Size, 64>::operator()(const void* __key, _Size __len) _LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK 3331{ 3332 const char* __s = static_cast<const char*>(__key); 3333 if (__len <= 32) { 3334 if (__len <= 16) { 3335 return __hash_len_0_to_16(__s, __len); 3336 } else { 3337 return __hash_len_17_to_32(__s, __len); 3338 } 3339 } else if (__len <= 64) { 3340 return __hash_len_33_to_64(__s, __len); 3341 } 3342 3343 // For strings over 64 bytes we hash the end first, and then as we 3344 // loop we keep 56 bytes of state: v, w, x, y, and z. 3345 _Size __x = __loadword<_Size>(__s + __len - 40); 3346 _Size __y = __loadword<_Size>(__s + __len - 16) + 3347 __loadword<_Size>(__s + __len - 56); 3348 _Size __z = __hash_len_16(__loadword<_Size>(__s + __len - 48) + __len, 3349 __loadword<_Size>(__s + __len - 24)); 3350 pair<_Size, _Size> __v = __weak_hash_len_32_with_seeds(__s + __len - 64, __len, __z); 3351 pair<_Size, _Size> __w = __weak_hash_len_32_with_seeds(__s + __len - 32, __y + __k1, __x); 3352 __x = __x * __k1 + __loadword<_Size>(__s); 3353 3354 // Decrease len to the nearest multiple of 64, and operate on 64-byte chunks. 3355 __len = (__len - 1) & ~static_cast<_Size>(63); 3356 do { 3357 __x = __rotate(__x + __y + __v.first + __loadword<_Size>(__s + 8), 37) * __k1; 3358 __y = __rotate(__y + __v.second + __loadword<_Size>(__s + 48), 42) * __k1; 3359 __x ^= __w.second; 3360 __y += __v.first + __loadword<_Size>(__s + 40); 3361 __z = __rotate(__z + __w.first, 33) * __k1; 3362 __v = __weak_hash_len_32_with_seeds(__s, __v.second * __k1, __x + __w.first); 3363 __w = __weak_hash_len_32_with_seeds(__s + 32, __z + __w.second, 3364 __y + __loadword<_Size>(__s + 16)); 3365 std::swap(__z, __x); 3366 __s += 64; 3367 __len -= 64; 3368 } while (__len != 0); 3369 return __hash_len_16( 3370 __hash_len_16(__v.first, __w.first) + __shift_mix(__y) * __k1 + __z, 3371 __hash_len_16(__v.second, __w.second) + __x); 3372} 3373 3374template <class _Tp, size_t = sizeof(_Tp) / sizeof(size_t)> 3375struct __scalar_hash; 3376 3377template <class _Tp> 3378struct __scalar_hash<_Tp, 0> 3379 : public unary_function<_Tp, size_t> 3380{ 3381 _LIBCPP_INLINE_VISIBILITY 3382 size_t operator()(_Tp __v) const _NOEXCEPT 3383 { 3384 union 3385 { 3386 _Tp __t; 3387 size_t __a; 3388 } __u; 3389 __u.__a = 0; 3390 __u.__t = __v; 3391 return __u.__a; 3392 } 3393}; 3394 3395template <class _Tp> 3396struct __scalar_hash<_Tp, 1> 3397 : public unary_function<_Tp, size_t> 3398{ 3399 _LIBCPP_INLINE_VISIBILITY 3400 size_t operator()(_Tp __v) const _NOEXCEPT 3401 { 3402 union 3403 { 3404 _Tp __t; 3405 size_t __a; 3406 } __u; 3407 __u.__t = __v; 3408 return __u.__a; 3409 } 3410}; 3411 3412template <class _Tp> 3413struct __scalar_hash<_Tp, 2> 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 struct 3423 { 3424 size_t __a; 3425 size_t __b; 3426 } __s; 3427 } __u; 3428 __u.__t = __v; 3429 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3430 } 3431}; 3432 3433template <class _Tp> 3434struct __scalar_hash<_Tp, 3> 3435 : public unary_function<_Tp, size_t> 3436{ 3437 _LIBCPP_INLINE_VISIBILITY 3438 size_t operator()(_Tp __v) const _NOEXCEPT 3439 { 3440 union 3441 { 3442 _Tp __t; 3443 struct 3444 { 3445 size_t __a; 3446 size_t __b; 3447 size_t __c; 3448 } __s; 3449 } __u; 3450 __u.__t = __v; 3451 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3452 } 3453}; 3454 3455template <class _Tp> 3456struct __scalar_hash<_Tp, 4> 3457 : public unary_function<_Tp, size_t> 3458{ 3459 _LIBCPP_INLINE_VISIBILITY 3460 size_t operator()(_Tp __v) const _NOEXCEPT 3461 { 3462 union 3463 { 3464 _Tp __t; 3465 struct 3466 { 3467 size_t __a; 3468 size_t __b; 3469 size_t __c; 3470 size_t __d; 3471 } __s; 3472 } __u; 3473 __u.__t = __v; 3474 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3475 } 3476}; 3477 3478template<class _Tp> 3479struct _LIBCPP_TYPE_VIS_ONLY hash<_Tp*> 3480 : public unary_function<_Tp*, size_t> 3481{ 3482 _LIBCPP_INLINE_VISIBILITY 3483 size_t operator()(_Tp* __v) const _NOEXCEPT 3484 { 3485 union 3486 { 3487 _Tp* __t; 3488 size_t __a; 3489 } __u; 3490 __u.__t = __v; 3491 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3492 } 3493}; 3494 3495template <class _Tp, class _Dp> 3496struct _LIBCPP_TYPE_VIS_ONLY hash<unique_ptr<_Tp, _Dp> > 3497{ 3498 typedef unique_ptr<_Tp, _Dp> argument_type; 3499 typedef size_t result_type; 3500 _LIBCPP_INLINE_VISIBILITY 3501 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 3502 { 3503 typedef typename argument_type::pointer pointer; 3504 return hash<pointer>()(__ptr.get()); 3505 } 3506}; 3507 3508struct __destruct_n 3509{ 3510private: 3511 size_t size; 3512 3513 template <class _Tp> 3514 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT 3515 {for (size_t __i = 0; __i < size; ++__i, ++__p) __p->~_Tp();} 3516 3517 template <class _Tp> 3518 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT 3519 {} 3520 3521 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT 3522 {++size;} 3523 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT 3524 {} 3525 3526 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT 3527 {size = __s;} 3528 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT 3529 {} 3530public: 3531 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT 3532 : size(__s) {} 3533 3534 template <class _Tp> 3535 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT 3536 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3537 3538 template <class _Tp> 3539 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT 3540 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3541 3542 template <class _Tp> 3543 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT 3544 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3545}; 3546 3547template <class _Alloc> 3548class __allocator_destructor 3549{ 3550 typedef allocator_traits<_Alloc> __alloc_traits; 3551public: 3552 typedef typename __alloc_traits::pointer pointer; 3553 typedef typename __alloc_traits::size_type size_type; 3554private: 3555 _Alloc& __alloc_; 3556 size_type __s_; 3557public: 3558 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) 3559 _NOEXCEPT 3560 : __alloc_(__a), __s_(__s) {} 3561 _LIBCPP_INLINE_VISIBILITY 3562 void operator()(pointer __p) _NOEXCEPT 3563 {__alloc_traits::deallocate(__alloc_, __p, __s_);} 3564}; 3565 3566template <class _InputIterator, class _ForwardIterator> 3567_ForwardIterator 3568uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) 3569{ 3570 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3571#ifndef _LIBCPP_NO_EXCEPTIONS 3572 _ForwardIterator __s = __r; 3573 try 3574 { 3575#endif 3576 for (; __f != __l; ++__f, (void) ++__r) 3577 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3578#ifndef _LIBCPP_NO_EXCEPTIONS 3579 } 3580 catch (...) 3581 { 3582 for (; __s != __r; ++__s) 3583 __s->~value_type(); 3584 throw; 3585 } 3586#endif 3587 return __r; 3588} 3589 3590template <class _InputIterator, class _Size, class _ForwardIterator> 3591_ForwardIterator 3592uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) 3593{ 3594 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3595#ifndef _LIBCPP_NO_EXCEPTIONS 3596 _ForwardIterator __s = __r; 3597 try 3598 { 3599#endif 3600 for (; __n > 0; ++__f, (void) ++__r, (void) --__n) 3601 ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); 3602#ifndef _LIBCPP_NO_EXCEPTIONS 3603 } 3604 catch (...) 3605 { 3606 for (; __s != __r; ++__s) 3607 __s->~value_type(); 3608 throw; 3609 } 3610#endif 3611 return __r; 3612} 3613 3614template <class _ForwardIterator, class _Tp> 3615void 3616uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) 3617{ 3618 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3619#ifndef _LIBCPP_NO_EXCEPTIONS 3620 _ForwardIterator __s = __f; 3621 try 3622 { 3623#endif 3624 for (; __f != __l; ++__f) 3625 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3626#ifndef _LIBCPP_NO_EXCEPTIONS 3627 } 3628 catch (...) 3629 { 3630 for (; __s != __f; ++__s) 3631 __s->~value_type(); 3632 throw; 3633 } 3634#endif 3635} 3636 3637template <class _ForwardIterator, class _Size, class _Tp> 3638_ForwardIterator 3639uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) 3640{ 3641 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3642#ifndef _LIBCPP_NO_EXCEPTIONS 3643 _ForwardIterator __s = __f; 3644 try 3645 { 3646#endif 3647 for (; __n > 0; ++__f, (void) --__n) 3648 ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); 3649#ifndef _LIBCPP_NO_EXCEPTIONS 3650 } 3651 catch (...) 3652 { 3653 for (; __s != __f; ++__s) 3654 __s->~value_type(); 3655 throw; 3656 } 3657#endif 3658 return __f; 3659} 3660 3661class _LIBCPP_EXCEPTION_ABI bad_weak_ptr 3662 : public std::exception 3663{ 3664public: 3665 virtual ~bad_weak_ptr() _NOEXCEPT; 3666 virtual const char* what() const _NOEXCEPT; 3667}; 3668 3669template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 3670 3671class _LIBCPP_TYPE_VIS __shared_count 3672{ 3673 __shared_count(const __shared_count&); 3674 __shared_count& operator=(const __shared_count&); 3675 3676protected: 3677 long __shared_owners_; 3678 virtual ~__shared_count(); 3679private: 3680 virtual void __on_zero_shared() _NOEXCEPT = 0; 3681 3682public: 3683 _LIBCPP_INLINE_VISIBILITY 3684 explicit __shared_count(long __refs = 0) _NOEXCEPT 3685 : __shared_owners_(__refs) {} 3686 3687 void __add_shared() _NOEXCEPT; 3688 bool __release_shared() _NOEXCEPT; 3689 _LIBCPP_INLINE_VISIBILITY 3690 long use_count() const _NOEXCEPT { 3691 return __libcpp_relaxed_load(&__shared_owners_) + 1; 3692 } 3693}; 3694 3695class _LIBCPP_TYPE_VIS __shared_weak_count 3696 : private __shared_count 3697{ 3698 long __shared_weak_owners_; 3699 3700public: 3701 _LIBCPP_INLINE_VISIBILITY 3702 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT 3703 : __shared_count(__refs), 3704 __shared_weak_owners_(__refs) {} 3705protected: 3706 virtual ~__shared_weak_count(); 3707 3708public: 3709 void __add_shared() _NOEXCEPT; 3710 void __add_weak() _NOEXCEPT; 3711 void __release_shared() _NOEXCEPT; 3712 void __release_weak() _NOEXCEPT; 3713 _LIBCPP_INLINE_VISIBILITY 3714 long use_count() const _NOEXCEPT {return __shared_count::use_count();} 3715 __shared_weak_count* lock() _NOEXCEPT; 3716 3717 // Define the function out only if we build static libc++ without RTTI. 3718 // Otherwise we may break clients who need to compile their projects with 3719 // -fno-rtti and yet link against a libc++.dylib compiled 3720 // without -fno-rtti. 3721#if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC) 3722 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3723#endif 3724private: 3725 virtual void __on_zero_shared_weak() _NOEXCEPT = 0; 3726}; 3727 3728template <class _Tp, class _Dp, class _Alloc> 3729class __shared_ptr_pointer 3730 : public __shared_weak_count 3731{ 3732 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; 3733public: 3734 _LIBCPP_INLINE_VISIBILITY 3735 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) 3736 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {} 3737 3738#ifndef _LIBCPP_NO_RTTI 3739 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3740#endif 3741 3742private: 3743 virtual void __on_zero_shared() _NOEXCEPT; 3744 virtual void __on_zero_shared_weak() _NOEXCEPT; 3745}; 3746 3747#ifndef _LIBCPP_NO_RTTI 3748 3749template <class _Tp, class _Dp, class _Alloc> 3750const void* 3751__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT 3752{ 3753 return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : 0; 3754} 3755 3756#endif // _LIBCPP_NO_RTTI 3757 3758template <class _Tp, class _Dp, class _Alloc> 3759void 3760__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT 3761{ 3762 __data_.first().second()(__data_.first().first()); 3763 __data_.first().second().~_Dp(); 3764} 3765 3766template <class _Tp, class _Dp, class _Alloc> 3767void 3768__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3769{ 3770 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al; 3771 typedef allocator_traits<_Al> _ATraits; 3772 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3773 3774 _Al __a(__data_.second()); 3775 __data_.second().~_Alloc(); 3776 __a.deallocate(_PTraits::pointer_to(*this), 1); 3777} 3778 3779template <class _Tp, class _Alloc> 3780class __shared_ptr_emplace 3781 : public __shared_weak_count 3782{ 3783 __compressed_pair<_Alloc, _Tp> __data_; 3784public: 3785#ifndef _LIBCPP_HAS_NO_VARIADICS 3786 3787 _LIBCPP_INLINE_VISIBILITY 3788 __shared_ptr_emplace(_Alloc __a) 3789 : __data_(_VSTD::move(__a)) {} 3790 3791 template <class ..._Args> 3792 _LIBCPP_INLINE_VISIBILITY 3793 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) 3794 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a), 3795 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {} 3796 3797#else // _LIBCPP_HAS_NO_VARIADICS 3798 3799 _LIBCPP_INLINE_VISIBILITY 3800 __shared_ptr_emplace(_Alloc __a) 3801 : __data_(__a) {} 3802 3803 template <class _A0> 3804 _LIBCPP_INLINE_VISIBILITY 3805 __shared_ptr_emplace(_Alloc __a, _A0& __a0) 3806 : __data_(__a, _Tp(__a0)) {} 3807 3808 template <class _A0, class _A1> 3809 _LIBCPP_INLINE_VISIBILITY 3810 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) 3811 : __data_(__a, _Tp(__a0, __a1)) {} 3812 3813 template <class _A0, class _A1, class _A2> 3814 _LIBCPP_INLINE_VISIBILITY 3815 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) 3816 : __data_(__a, _Tp(__a0, __a1, __a2)) {} 3817 3818#endif // _LIBCPP_HAS_NO_VARIADICS 3819 3820private: 3821 virtual void __on_zero_shared() _NOEXCEPT; 3822 virtual void __on_zero_shared_weak() _NOEXCEPT; 3823public: 3824 _LIBCPP_INLINE_VISIBILITY 3825 _Tp* get() _NOEXCEPT {return &__data_.second();} 3826}; 3827 3828template <class _Tp, class _Alloc> 3829void 3830__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT 3831{ 3832 __data_.second().~_Tp(); 3833} 3834 3835template <class _Tp, class _Alloc> 3836void 3837__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3838{ 3839 typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type _Al; 3840 typedef allocator_traits<_Al> _ATraits; 3841 typedef pointer_traits<typename _ATraits::pointer> _PTraits; 3842 _Al __a(__data_.first()); 3843 __data_.first().~_Alloc(); 3844 __a.deallocate(_PTraits::pointer_to(*this), 1); 3845} 3846 3847template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this; 3848 3849template<class _Tp> 3850class _LIBCPP_TYPE_VIS_ONLY shared_ptr 3851{ 3852public: 3853 typedef _Tp element_type; 3854private: 3855 element_type* __ptr_; 3856 __shared_weak_count* __cntrl_; 3857 3858 struct __nat {int __for_bool_;}; 3859public: 3860 _LIBCPP_INLINE_VISIBILITY 3861 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT; 3862 _LIBCPP_INLINE_VISIBILITY 3863 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT; 3864 template<class _Yp> 3865 explicit shared_ptr(_Yp* __p, 3866 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3867 template<class _Yp, class _Dp> 3868 shared_ptr(_Yp* __p, _Dp __d, 3869 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3870 template<class _Yp, class _Dp, class _Alloc> 3871 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 3872 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3873 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); 3874 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); 3875 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT; 3876 _LIBCPP_INLINE_VISIBILITY 3877 shared_ptr(const shared_ptr& __r) _NOEXCEPT; 3878 template<class _Yp> 3879 _LIBCPP_INLINE_VISIBILITY 3880 shared_ptr(const shared_ptr<_Yp>& __r, 3881 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3882 _NOEXCEPT; 3883#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3884 _LIBCPP_INLINE_VISIBILITY 3885 shared_ptr(shared_ptr&& __r) _NOEXCEPT; 3886 template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(shared_ptr<_Yp>&& __r, 3887 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3888 _NOEXCEPT; 3889#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3890 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, 3891 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type= __nat()); 3892#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3893 template<class _Yp> 3894 shared_ptr(auto_ptr<_Yp>&& __r, 3895 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3896#else 3897 template<class _Yp> 3898 shared_ptr(auto_ptr<_Yp> __r, 3899 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3900#endif 3901#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3902 template <class _Yp, class _Dp> 3903 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3904 typename enable_if 3905 < 3906 !is_lvalue_reference<_Dp>::value && 3907 !is_array<_Yp>::value && 3908 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3909 __nat 3910 >::type = __nat()); 3911 template <class _Yp, class _Dp> 3912 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3913 typename enable_if 3914 < 3915 is_lvalue_reference<_Dp>::value && 3916 !is_array<_Yp>::value && 3917 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3918 __nat 3919 >::type = __nat()); 3920#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3921 template <class _Yp, class _Dp> 3922 shared_ptr(unique_ptr<_Yp, _Dp>, 3923 typename enable_if 3924 < 3925 !is_lvalue_reference<_Dp>::value && 3926 !is_array<_Yp>::value && 3927 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3928 __nat 3929 >::type = __nat()); 3930 template <class _Yp, class _Dp> 3931 shared_ptr(unique_ptr<_Yp, _Dp>, 3932 typename enable_if 3933 < 3934 is_lvalue_reference<_Dp>::value && 3935 !is_array<_Yp>::value && 3936 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3937 __nat 3938 >::type = __nat()); 3939#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3940 3941 ~shared_ptr(); 3942 3943 _LIBCPP_INLINE_VISIBILITY 3944 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT; 3945 template<class _Yp> 3946 typename enable_if 3947 < 3948 is_convertible<_Yp*, element_type*>::value, 3949 shared_ptr& 3950 >::type 3951 _LIBCPP_INLINE_VISIBILITY 3952 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT; 3953#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3954 _LIBCPP_INLINE_VISIBILITY 3955 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT; 3956 template<class _Yp> 3957 typename enable_if 3958 < 3959 is_convertible<_Yp*, element_type*>::value, 3960 shared_ptr<_Tp>& 3961 >::type 3962 _LIBCPP_INLINE_VISIBILITY 3963 operator=(shared_ptr<_Yp>&& __r); 3964 template<class _Yp> 3965 typename enable_if 3966 < 3967 !is_array<_Yp>::value && 3968 is_convertible<_Yp*, element_type*>::value, 3969 shared_ptr 3970 >::type& 3971 _LIBCPP_INLINE_VISIBILITY 3972 operator=(auto_ptr<_Yp>&& __r); 3973#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3974 template<class _Yp> 3975 typename enable_if 3976 < 3977 !is_array<_Yp>::value && 3978 is_convertible<_Yp*, element_type*>::value, 3979 shared_ptr& 3980 >::type 3981 _LIBCPP_INLINE_VISIBILITY 3982 operator=(auto_ptr<_Yp> __r); 3983#endif 3984 template <class _Yp, class _Dp> 3985 typename enable_if 3986 < 3987 !is_array<_Yp>::value && 3988 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3989 shared_ptr& 3990 >::type 3991#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3992 _LIBCPP_INLINE_VISIBILITY 3993 operator=(unique_ptr<_Yp, _Dp>&& __r); 3994#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3995 _LIBCPP_INLINE_VISIBILITY 3996 operator=(unique_ptr<_Yp, _Dp> __r); 3997#endif 3998 3999 _LIBCPP_INLINE_VISIBILITY 4000 void swap(shared_ptr& __r) _NOEXCEPT; 4001 _LIBCPP_INLINE_VISIBILITY 4002 void reset() _NOEXCEPT; 4003 template<class _Yp> 4004 typename enable_if 4005 < 4006 is_convertible<_Yp*, element_type*>::value, 4007 void 4008 >::type 4009 _LIBCPP_INLINE_VISIBILITY 4010 reset(_Yp* __p); 4011 template<class _Yp, class _Dp> 4012 typename enable_if 4013 < 4014 is_convertible<_Yp*, element_type*>::value, 4015 void 4016 >::type 4017 _LIBCPP_INLINE_VISIBILITY 4018 reset(_Yp* __p, _Dp __d); 4019 template<class _Yp, class _Dp, class _Alloc> 4020 typename enable_if 4021 < 4022 is_convertible<_Yp*, element_type*>::value, 4023 void 4024 >::type 4025 _LIBCPP_INLINE_VISIBILITY 4026 reset(_Yp* __p, _Dp __d, _Alloc __a); 4027 4028 _LIBCPP_INLINE_VISIBILITY 4029 element_type* get() const _NOEXCEPT {return __ptr_;} 4030 _LIBCPP_INLINE_VISIBILITY 4031 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT 4032 {return *__ptr_;} 4033 _LIBCPP_INLINE_VISIBILITY 4034 element_type* operator->() const _NOEXCEPT {return __ptr_;} 4035 _LIBCPP_INLINE_VISIBILITY 4036 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;} 4037 _LIBCPP_INLINE_VISIBILITY 4038 bool unique() const _NOEXCEPT {return use_count() == 1;} 4039 _LIBCPP_INLINE_VISIBILITY 4040 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;} 4041 template <class _Up> 4042 _LIBCPP_INLINE_VISIBILITY 4043 bool owner_before(shared_ptr<_Up> const& __p) const 4044 {return __cntrl_ < __p.__cntrl_;} 4045 template <class _Up> 4046 _LIBCPP_INLINE_VISIBILITY 4047 bool owner_before(weak_ptr<_Up> const& __p) const 4048 {return __cntrl_ < __p.__cntrl_;} 4049 _LIBCPP_INLINE_VISIBILITY 4050 bool 4051 __owner_equivalent(const shared_ptr& __p) const 4052 {return __cntrl_ == __p.__cntrl_;} 4053 4054#ifndef _LIBCPP_NO_RTTI 4055 template <class _Dp> 4056 _LIBCPP_INLINE_VISIBILITY 4057 _Dp* __get_deleter() const _NOEXCEPT 4058 {return (_Dp*)(__cntrl_ ? __cntrl_->__get_deleter(typeid(_Dp)) : 0);} 4059#endif // _LIBCPP_NO_RTTI 4060 4061#ifndef _LIBCPP_HAS_NO_VARIADICS 4062 4063 template<class ..._Args> 4064 static 4065 shared_ptr<_Tp> 4066 make_shared(_Args&& ...__args); 4067 4068 template<class _Alloc, class ..._Args> 4069 static 4070 shared_ptr<_Tp> 4071 allocate_shared(const _Alloc& __a, _Args&& ...__args); 4072 4073#else // _LIBCPP_HAS_NO_VARIADICS 4074 4075 static shared_ptr<_Tp> make_shared(); 4076 4077 template<class _A0> 4078 static shared_ptr<_Tp> make_shared(_A0&); 4079 4080 template<class _A0, class _A1> 4081 static shared_ptr<_Tp> make_shared(_A0&, _A1&); 4082 4083 template<class _A0, class _A1, class _A2> 4084 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); 4085 4086 template<class _Alloc> 4087 static shared_ptr<_Tp> 4088 allocate_shared(const _Alloc& __a); 4089 4090 template<class _Alloc, class _A0> 4091 static shared_ptr<_Tp> 4092 allocate_shared(const _Alloc& __a, _A0& __a0); 4093 4094 template<class _Alloc, class _A0, class _A1> 4095 static shared_ptr<_Tp> 4096 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); 4097 4098 template<class _Alloc, class _A0, class _A1, class _A2> 4099 static shared_ptr<_Tp> 4100 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); 4101 4102#endif // _LIBCPP_HAS_NO_VARIADICS 4103 4104private: 4105 4106 template <class _Yp> 4107 _LIBCPP_INLINE_VISIBILITY 4108 void 4109 __enable_weak_this(const enable_shared_from_this<_Yp>* __e) _NOEXCEPT 4110 { 4111 if (__e) 4112 { 4113 __e->__weak_this_.__ptr_ = const_cast<_Yp*>(static_cast<const _Yp*>(__e)); 4114 __e->__weak_this_.__cntrl_ = __cntrl_; 4115 __cntrl_->__add_weak(); 4116 } 4117 } 4118 4119 _LIBCPP_INLINE_VISIBILITY 4120 void __enable_weak_this(const volatile void*) _NOEXCEPT {} 4121 4122 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr; 4123 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 4124}; 4125 4126template<class _Tp> 4127inline 4128_LIBCPP_CONSTEXPR 4129shared_ptr<_Tp>::shared_ptr() _NOEXCEPT 4130 : __ptr_(0), 4131 __cntrl_(0) 4132{ 4133} 4134 4135template<class _Tp> 4136inline 4137_LIBCPP_CONSTEXPR 4138shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT 4139 : __ptr_(0), 4140 __cntrl_(0) 4141{ 4142} 4143 4144template<class _Tp> 4145template<class _Yp> 4146shared_ptr<_Tp>::shared_ptr(_Yp* __p, 4147 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4148 : __ptr_(__p) 4149{ 4150 unique_ptr<_Yp> __hold(__p); 4151 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4152 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), allocator<_Yp>()); 4153 __hold.release(); 4154 __enable_weak_this(__p); 4155} 4156 4157template<class _Tp> 4158template<class _Yp, class _Dp> 4159shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, 4160 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4161 : __ptr_(__p) 4162{ 4163#ifndef _LIBCPP_NO_EXCEPTIONS 4164 try 4165 { 4166#endif // _LIBCPP_NO_EXCEPTIONS 4167 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4168 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Yp>()); 4169 __enable_weak_this(__p); 4170#ifndef _LIBCPP_NO_EXCEPTIONS 4171 } 4172 catch (...) 4173 { 4174 __d(__p); 4175 throw; 4176 } 4177#endif // _LIBCPP_NO_EXCEPTIONS 4178} 4179 4180template<class _Tp> 4181template<class _Dp> 4182shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) 4183 : __ptr_(0) 4184{ 4185#ifndef _LIBCPP_NO_EXCEPTIONS 4186 try 4187 { 4188#endif // _LIBCPP_NO_EXCEPTIONS 4189 typedef __shared_ptr_pointer<nullptr_t, _Dp, allocator<_Tp> > _CntrlBlk; 4190 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Tp>()); 4191#ifndef _LIBCPP_NO_EXCEPTIONS 4192 } 4193 catch (...) 4194 { 4195 __d(__p); 4196 throw; 4197 } 4198#endif // _LIBCPP_NO_EXCEPTIONS 4199} 4200 4201template<class _Tp> 4202template<class _Yp, class _Dp, class _Alloc> 4203shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 4204 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4205 : __ptr_(__p) 4206{ 4207#ifndef _LIBCPP_NO_EXCEPTIONS 4208 try 4209 { 4210#endif // _LIBCPP_NO_EXCEPTIONS 4211 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; 4212 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4213 typedef __allocator_destructor<_A2> _D2; 4214 _A2 __a2(__a); 4215 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4216 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4217 _CntrlBlk(__p, __d, __a); 4218 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4219 __enable_weak_this(__p); 4220#ifndef _LIBCPP_NO_EXCEPTIONS 4221 } 4222 catch (...) 4223 { 4224 __d(__p); 4225 throw; 4226 } 4227#endif // _LIBCPP_NO_EXCEPTIONS 4228} 4229 4230template<class _Tp> 4231template<class _Dp, class _Alloc> 4232shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) 4233 : __ptr_(0) 4234{ 4235#ifndef _LIBCPP_NO_EXCEPTIONS 4236 try 4237 { 4238#endif // _LIBCPP_NO_EXCEPTIONS 4239 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; 4240 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4241 typedef __allocator_destructor<_A2> _D2; 4242 _A2 __a2(__a); 4243 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4244 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4245 _CntrlBlk(__p, __d, __a); 4246 __cntrl_ = _VSTD::addressof(*__hold2.release()); 4247#ifndef _LIBCPP_NO_EXCEPTIONS 4248 } 4249 catch (...) 4250 { 4251 __d(__p); 4252 throw; 4253 } 4254#endif // _LIBCPP_NO_EXCEPTIONS 4255} 4256 4257template<class _Tp> 4258template<class _Yp> 4259inline 4260shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT 4261 : __ptr_(__p), 4262 __cntrl_(__r.__cntrl_) 4263{ 4264 if (__cntrl_) 4265 __cntrl_->__add_shared(); 4266} 4267 4268template<class _Tp> 4269inline 4270shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT 4271 : __ptr_(__r.__ptr_), 4272 __cntrl_(__r.__cntrl_) 4273{ 4274 if (__cntrl_) 4275 __cntrl_->__add_shared(); 4276} 4277 4278template<class _Tp> 4279template<class _Yp> 4280inline 4281shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, 4282 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4283 _NOEXCEPT 4284 : __ptr_(__r.__ptr_), 4285 __cntrl_(__r.__cntrl_) 4286{ 4287 if (__cntrl_) 4288 __cntrl_->__add_shared(); 4289} 4290 4291#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4292 4293template<class _Tp> 4294inline 4295shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT 4296 : __ptr_(__r.__ptr_), 4297 __cntrl_(__r.__cntrl_) 4298{ 4299 __r.__ptr_ = 0; 4300 __r.__cntrl_ = 0; 4301} 4302 4303template<class _Tp> 4304template<class _Yp> 4305inline 4306shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, 4307 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4308 _NOEXCEPT 4309 : __ptr_(__r.__ptr_), 4310 __cntrl_(__r.__cntrl_) 4311{ 4312 __r.__ptr_ = 0; 4313 __r.__cntrl_ = 0; 4314} 4315 4316#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4317 4318template<class _Tp> 4319template<class _Yp> 4320#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4321shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r, 4322#else 4323shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r, 4324#endif 4325 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4326 : __ptr_(__r.get()) 4327{ 4328 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4329 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); 4330 __enable_weak_this(__r.get()); 4331 __r.release(); 4332} 4333 4334template<class _Tp> 4335template <class _Yp, class _Dp> 4336#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4337shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4338#else 4339shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4340#endif 4341 typename enable_if 4342 < 4343 !is_lvalue_reference<_Dp>::value && 4344 !is_array<_Yp>::value && 4345 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4346 __nat 4347 >::type) 4348 : __ptr_(__r.get()) 4349{ 4350#if _LIBCPP_STD_VER > 11 4351 if (__ptr_ == nullptr) 4352 __cntrl_ = nullptr; 4353 else 4354#endif 4355 { 4356 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4357 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), allocator<_Yp>()); 4358 __enable_weak_this(__r.get()); 4359 } 4360 __r.release(); 4361} 4362 4363template<class _Tp> 4364template <class _Yp, class _Dp> 4365#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4366shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4367#else 4368shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4369#endif 4370 typename enable_if 4371 < 4372 is_lvalue_reference<_Dp>::value && 4373 !is_array<_Yp>::value && 4374 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4375 __nat 4376 >::type) 4377 : __ptr_(__r.get()) 4378{ 4379#if _LIBCPP_STD_VER > 11 4380 if (__ptr_ == nullptr) 4381 __cntrl_ = nullptr; 4382 else 4383#endif 4384 { 4385 typedef __shared_ptr_pointer<_Yp*, 4386 reference_wrapper<typename remove_reference<_Dp>::type>, 4387 allocator<_Yp> > _CntrlBlk; 4388 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), allocator<_Yp>()); 4389 __enable_weak_this(__r.get()); 4390 } 4391 __r.release(); 4392} 4393 4394#ifndef _LIBCPP_HAS_NO_VARIADICS 4395 4396template<class _Tp> 4397template<class ..._Args> 4398shared_ptr<_Tp> 4399shared_ptr<_Tp>::make_shared(_Args&& ...__args) 4400{ 4401 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4402 typedef allocator<_CntrlBlk> _A2; 4403 typedef __allocator_destructor<_A2> _D2; 4404 _A2 __a2; 4405 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4406 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...); 4407 shared_ptr<_Tp> __r; 4408 __r.__ptr_ = __hold2.get()->get(); 4409 __r.__cntrl_ = __hold2.release(); 4410 __r.__enable_weak_this(__r.__ptr_); 4411 return __r; 4412} 4413 4414template<class _Tp> 4415template<class _Alloc, class ..._Args> 4416shared_ptr<_Tp> 4417shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) 4418{ 4419 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4420 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; 4421 typedef __allocator_destructor<_A2> _D2; 4422 _A2 __a2(__a); 4423 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4424 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4425 _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...); 4426 shared_ptr<_Tp> __r; 4427 __r.__ptr_ = __hold2.get()->get(); 4428 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4429 __r.__enable_weak_this(__r.__ptr_); 4430 return __r; 4431} 4432 4433#else // _LIBCPP_HAS_NO_VARIADICS 4434 4435template<class _Tp> 4436shared_ptr<_Tp> 4437shared_ptr<_Tp>::make_shared() 4438{ 4439 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4440 typedef allocator<_CntrlBlk> _Alloc2; 4441 typedef __allocator_destructor<_Alloc2> _D2; 4442 _Alloc2 __alloc2; 4443 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4444 ::new(__hold2.get()) _CntrlBlk(__alloc2); 4445 shared_ptr<_Tp> __r; 4446 __r.__ptr_ = __hold2.get()->get(); 4447 __r.__cntrl_ = __hold2.release(); 4448 __r.__enable_weak_this(__r.__ptr_); 4449 return __r; 4450} 4451 4452template<class _Tp> 4453template<class _A0> 4454shared_ptr<_Tp> 4455shared_ptr<_Tp>::make_shared(_A0& __a0) 4456{ 4457 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4458 typedef allocator<_CntrlBlk> _Alloc2; 4459 typedef __allocator_destructor<_Alloc2> _D2; 4460 _Alloc2 __alloc2; 4461 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4462 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); 4463 shared_ptr<_Tp> __r; 4464 __r.__ptr_ = __hold2.get()->get(); 4465 __r.__cntrl_ = __hold2.release(); 4466 __r.__enable_weak_this(__r.__ptr_); 4467 return __r; 4468} 4469 4470template<class _Tp> 4471template<class _A0, class _A1> 4472shared_ptr<_Tp> 4473shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) 4474{ 4475 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4476 typedef allocator<_CntrlBlk> _Alloc2; 4477 typedef __allocator_destructor<_Alloc2> _D2; 4478 _Alloc2 __alloc2; 4479 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4480 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); 4481 shared_ptr<_Tp> __r; 4482 __r.__ptr_ = __hold2.get()->get(); 4483 __r.__cntrl_ = __hold2.release(); 4484 __r.__enable_weak_this(__r.__ptr_); 4485 return __r; 4486} 4487 4488template<class _Tp> 4489template<class _A0, class _A1, class _A2> 4490shared_ptr<_Tp> 4491shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4492{ 4493 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4494 typedef allocator<_CntrlBlk> _Alloc2; 4495 typedef __allocator_destructor<_Alloc2> _D2; 4496 _Alloc2 __alloc2; 4497 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4498 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); 4499 shared_ptr<_Tp> __r; 4500 __r.__ptr_ = __hold2.get()->get(); 4501 __r.__cntrl_ = __hold2.release(); 4502 __r.__enable_weak_this(__r.__ptr_); 4503 return __r; 4504} 4505 4506template<class _Tp> 4507template<class _Alloc> 4508shared_ptr<_Tp> 4509shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) 4510{ 4511 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4512 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4513 typedef __allocator_destructor<_Alloc2> _D2; 4514 _Alloc2 __alloc2(__a); 4515 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4516 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4517 _CntrlBlk(__a); 4518 shared_ptr<_Tp> __r; 4519 __r.__ptr_ = __hold2.get()->get(); 4520 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4521 __r.__enable_weak_this(__r.__ptr_); 4522 return __r; 4523} 4524 4525template<class _Tp> 4526template<class _Alloc, class _A0> 4527shared_ptr<_Tp> 4528shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) 4529{ 4530 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4531 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4532 typedef __allocator_destructor<_Alloc2> _D2; 4533 _Alloc2 __alloc2(__a); 4534 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4535 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4536 _CntrlBlk(__a, __a0); 4537 shared_ptr<_Tp> __r; 4538 __r.__ptr_ = __hold2.get()->get(); 4539 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4540 __r.__enable_weak_this(__r.__ptr_); 4541 return __r; 4542} 4543 4544template<class _Tp> 4545template<class _Alloc, class _A0, class _A1> 4546shared_ptr<_Tp> 4547shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4548{ 4549 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4550 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4551 typedef __allocator_destructor<_Alloc2> _D2; 4552 _Alloc2 __alloc2(__a); 4553 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4554 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4555 _CntrlBlk(__a, __a0, __a1); 4556 shared_ptr<_Tp> __r; 4557 __r.__ptr_ = __hold2.get()->get(); 4558 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4559 __r.__enable_weak_this(__r.__ptr_); 4560 return __r; 4561} 4562 4563template<class _Tp> 4564template<class _Alloc, class _A0, class _A1, class _A2> 4565shared_ptr<_Tp> 4566shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4567{ 4568 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4569 typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; 4570 typedef __allocator_destructor<_Alloc2> _D2; 4571 _Alloc2 __alloc2(__a); 4572 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4573 ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) 4574 _CntrlBlk(__a, __a0, __a1, __a2); 4575 shared_ptr<_Tp> __r; 4576 __r.__ptr_ = __hold2.get()->get(); 4577 __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); 4578 __r.__enable_weak_this(__r.__ptr_); 4579 return __r; 4580} 4581 4582#endif // _LIBCPP_HAS_NO_VARIADICS 4583 4584template<class _Tp> 4585shared_ptr<_Tp>::~shared_ptr() 4586{ 4587 if (__cntrl_) 4588 __cntrl_->__release_shared(); 4589} 4590 4591template<class _Tp> 4592inline 4593shared_ptr<_Tp>& 4594shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT 4595{ 4596 shared_ptr(__r).swap(*this); 4597 return *this; 4598} 4599 4600template<class _Tp> 4601template<class _Yp> 4602inline 4603typename enable_if 4604< 4605 is_convertible<_Yp*, _Tp*>::value, 4606 shared_ptr<_Tp>& 4607>::type 4608shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT 4609{ 4610 shared_ptr(__r).swap(*this); 4611 return *this; 4612} 4613 4614#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4615 4616template<class _Tp> 4617inline 4618shared_ptr<_Tp>& 4619shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT 4620{ 4621 shared_ptr(_VSTD::move(__r)).swap(*this); 4622 return *this; 4623} 4624 4625template<class _Tp> 4626template<class _Yp> 4627inline 4628typename enable_if 4629< 4630 is_convertible<_Yp*, _Tp*>::value, 4631 shared_ptr<_Tp>& 4632>::type 4633shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) 4634{ 4635 shared_ptr(_VSTD::move(__r)).swap(*this); 4636 return *this; 4637} 4638 4639template<class _Tp> 4640template<class _Yp> 4641inline 4642typename enable_if 4643< 4644 !is_array<_Yp>::value && 4645 is_convertible<_Yp*, _Tp*>::value, 4646 shared_ptr<_Tp> 4647>::type& 4648shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) 4649{ 4650 shared_ptr(_VSTD::move(__r)).swap(*this); 4651 return *this; 4652} 4653 4654template<class _Tp> 4655template <class _Yp, class _Dp> 4656inline 4657typename enable_if 4658< 4659 !is_array<_Yp>::value && 4660 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4661 shared_ptr<_Tp>& 4662>::type 4663shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) 4664{ 4665 shared_ptr(_VSTD::move(__r)).swap(*this); 4666 return *this; 4667} 4668 4669#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4670 4671template<class _Tp> 4672template<class _Yp> 4673inline _LIBCPP_INLINE_VISIBILITY 4674typename enable_if 4675< 4676 !is_array<_Yp>::value && 4677 is_convertible<_Yp*, _Tp*>::value, 4678 shared_ptr<_Tp>& 4679>::type 4680shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) 4681{ 4682 shared_ptr(__r).swap(*this); 4683 return *this; 4684} 4685 4686template<class _Tp> 4687template <class _Yp, class _Dp> 4688inline _LIBCPP_INLINE_VISIBILITY 4689typename enable_if 4690< 4691 !is_array<_Yp>::value && 4692 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4693 shared_ptr<_Tp>& 4694>::type 4695shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) 4696{ 4697 shared_ptr(_VSTD::move(__r)).swap(*this); 4698 return *this; 4699} 4700 4701#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4702 4703template<class _Tp> 4704inline 4705void 4706shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT 4707{ 4708 _VSTD::swap(__ptr_, __r.__ptr_); 4709 _VSTD::swap(__cntrl_, __r.__cntrl_); 4710} 4711 4712template<class _Tp> 4713inline 4714void 4715shared_ptr<_Tp>::reset() _NOEXCEPT 4716{ 4717 shared_ptr().swap(*this); 4718} 4719 4720template<class _Tp> 4721template<class _Yp> 4722inline 4723typename enable_if 4724< 4725 is_convertible<_Yp*, _Tp*>::value, 4726 void 4727>::type 4728shared_ptr<_Tp>::reset(_Yp* __p) 4729{ 4730 shared_ptr(__p).swap(*this); 4731} 4732 4733template<class _Tp> 4734template<class _Yp, class _Dp> 4735inline 4736typename enable_if 4737< 4738 is_convertible<_Yp*, _Tp*>::value, 4739 void 4740>::type 4741shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) 4742{ 4743 shared_ptr(__p, __d).swap(*this); 4744} 4745 4746template<class _Tp> 4747template<class _Yp, class _Dp, class _Alloc> 4748inline 4749typename enable_if 4750< 4751 is_convertible<_Yp*, _Tp*>::value, 4752 void 4753>::type 4754shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) 4755{ 4756 shared_ptr(__p, __d, __a).swap(*this); 4757} 4758 4759#ifndef _LIBCPP_HAS_NO_VARIADICS 4760 4761template<class _Tp, class ..._Args> 4762inline _LIBCPP_INLINE_VISIBILITY 4763typename enable_if 4764< 4765 !is_array<_Tp>::value, 4766 shared_ptr<_Tp> 4767>::type 4768make_shared(_Args&& ...__args) 4769{ 4770 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...); 4771} 4772 4773template<class _Tp, class _Alloc, class ..._Args> 4774inline _LIBCPP_INLINE_VISIBILITY 4775typename enable_if 4776< 4777 !is_array<_Tp>::value, 4778 shared_ptr<_Tp> 4779>::type 4780allocate_shared(const _Alloc& __a, _Args&& ...__args) 4781{ 4782 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...); 4783} 4784 4785#else // _LIBCPP_HAS_NO_VARIADICS 4786 4787template<class _Tp> 4788inline _LIBCPP_INLINE_VISIBILITY 4789shared_ptr<_Tp> 4790make_shared() 4791{ 4792 return shared_ptr<_Tp>::make_shared(); 4793} 4794 4795template<class _Tp, class _A0> 4796inline _LIBCPP_INLINE_VISIBILITY 4797shared_ptr<_Tp> 4798make_shared(_A0& __a0) 4799{ 4800 return shared_ptr<_Tp>::make_shared(__a0); 4801} 4802 4803template<class _Tp, class _A0, class _A1> 4804inline _LIBCPP_INLINE_VISIBILITY 4805shared_ptr<_Tp> 4806make_shared(_A0& __a0, _A1& __a1) 4807{ 4808 return shared_ptr<_Tp>::make_shared(__a0, __a1); 4809} 4810 4811template<class _Tp, class _A0, class _A1, class _A2> 4812inline _LIBCPP_INLINE_VISIBILITY 4813shared_ptr<_Tp> 4814make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4815{ 4816 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); 4817} 4818 4819template<class _Tp, class _Alloc> 4820inline _LIBCPP_INLINE_VISIBILITY 4821shared_ptr<_Tp> 4822allocate_shared(const _Alloc& __a) 4823{ 4824 return shared_ptr<_Tp>::allocate_shared(__a); 4825} 4826 4827template<class _Tp, class _Alloc, class _A0> 4828inline _LIBCPP_INLINE_VISIBILITY 4829shared_ptr<_Tp> 4830allocate_shared(const _Alloc& __a, _A0& __a0) 4831{ 4832 return shared_ptr<_Tp>::allocate_shared(__a, __a0); 4833} 4834 4835template<class _Tp, class _Alloc, class _A0, class _A1> 4836inline _LIBCPP_INLINE_VISIBILITY 4837shared_ptr<_Tp> 4838allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4839{ 4840 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); 4841} 4842 4843template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> 4844inline _LIBCPP_INLINE_VISIBILITY 4845shared_ptr<_Tp> 4846allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4847{ 4848 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); 4849} 4850 4851#endif // _LIBCPP_HAS_NO_VARIADICS 4852 4853template<class _Tp, class _Up> 4854inline _LIBCPP_INLINE_VISIBILITY 4855bool 4856operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4857{ 4858 return __x.get() == __y.get(); 4859} 4860 4861template<class _Tp, class _Up> 4862inline _LIBCPP_INLINE_VISIBILITY 4863bool 4864operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4865{ 4866 return !(__x == __y); 4867} 4868 4869template<class _Tp, class _Up> 4870inline _LIBCPP_INLINE_VISIBILITY 4871bool 4872operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4873{ 4874 typedef typename common_type<_Tp*, _Up*>::type _Vp; 4875 return less<_Vp>()(__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 __y < __x; 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 return !(__y < __x); 4892} 4893 4894template<class _Tp, class _Up> 4895inline _LIBCPP_INLINE_VISIBILITY 4896bool 4897operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4898{ 4899 return !(__x < __y); 4900} 4901 4902template<class _Tp> 4903inline _LIBCPP_INLINE_VISIBILITY 4904bool 4905operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4906{ 4907 return !__x; 4908} 4909 4910template<class _Tp> 4911inline _LIBCPP_INLINE_VISIBILITY 4912bool 4913operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4914{ 4915 return !__x; 4916} 4917 4918template<class _Tp> 4919inline _LIBCPP_INLINE_VISIBILITY 4920bool 4921operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4922{ 4923 return static_cast<bool>(__x); 4924} 4925 4926template<class _Tp> 4927inline _LIBCPP_INLINE_VISIBILITY 4928bool 4929operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4930{ 4931 return static_cast<bool>(__x); 4932} 4933 4934template<class _Tp> 4935inline _LIBCPP_INLINE_VISIBILITY 4936bool 4937operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4938{ 4939 return less<_Tp*>()(__x.get(), nullptr); 4940} 4941 4942template<class _Tp> 4943inline _LIBCPP_INLINE_VISIBILITY 4944bool 4945operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4946{ 4947 return less<_Tp*>()(nullptr, __x.get()); 4948} 4949 4950template<class _Tp> 4951inline _LIBCPP_INLINE_VISIBILITY 4952bool 4953operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4954{ 4955 return nullptr < __x; 4956} 4957 4958template<class _Tp> 4959inline _LIBCPP_INLINE_VISIBILITY 4960bool 4961operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4962{ 4963 return __x < nullptr; 4964} 4965 4966template<class _Tp> 4967inline _LIBCPP_INLINE_VISIBILITY 4968bool 4969operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4970{ 4971 return !(nullptr < __x); 4972} 4973 4974template<class _Tp> 4975inline _LIBCPP_INLINE_VISIBILITY 4976bool 4977operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4978{ 4979 return !(__x < nullptr); 4980} 4981 4982template<class _Tp> 4983inline _LIBCPP_INLINE_VISIBILITY 4984bool 4985operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4986{ 4987 return !(__x < nullptr); 4988} 4989 4990template<class _Tp> 4991inline _LIBCPP_INLINE_VISIBILITY 4992bool 4993operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4994{ 4995 return !(nullptr < __x); 4996} 4997 4998template<class _Tp> 4999inline _LIBCPP_INLINE_VISIBILITY 5000void 5001swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT 5002{ 5003 __x.swap(__y); 5004} 5005 5006template<class _Tp, class _Up> 5007inline _LIBCPP_INLINE_VISIBILITY 5008typename enable_if 5009< 5010 !is_array<_Tp>::value && !is_array<_Up>::value, 5011 shared_ptr<_Tp> 5012>::type 5013static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 5014{ 5015 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); 5016} 5017 5018template<class _Tp, class _Up> 5019inline _LIBCPP_INLINE_VISIBILITY 5020typename enable_if 5021< 5022 !is_array<_Tp>::value && !is_array<_Up>::value, 5023 shared_ptr<_Tp> 5024>::type 5025dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 5026{ 5027 _Tp* __p = dynamic_cast<_Tp*>(__r.get()); 5028 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); 5029} 5030 5031template<class _Tp, class _Up> 5032typename enable_if 5033< 5034 is_array<_Tp>::value == is_array<_Up>::value, 5035 shared_ptr<_Tp> 5036>::type 5037const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 5038{ 5039 typedef typename remove_extent<_Tp>::type _RTp; 5040 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get())); 5041} 5042 5043#ifndef _LIBCPP_NO_RTTI 5044 5045template<class _Dp, class _Tp> 5046inline _LIBCPP_INLINE_VISIBILITY 5047_Dp* 5048get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT 5049{ 5050 return __p.template __get_deleter<_Dp>(); 5051} 5052 5053#endif // _LIBCPP_NO_RTTI 5054 5055template<class _Tp> 5056class _LIBCPP_TYPE_VIS_ONLY weak_ptr 5057{ 5058public: 5059 typedef _Tp element_type; 5060private: 5061 element_type* __ptr_; 5062 __shared_weak_count* __cntrl_; 5063 5064public: 5065 _LIBCPP_INLINE_VISIBILITY 5066 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT; 5067 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r, 5068 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 5069 _NOEXCEPT; 5070 _LIBCPP_INLINE_VISIBILITY 5071 weak_ptr(weak_ptr const& __r) _NOEXCEPT; 5072 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r, 5073 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 5074 _NOEXCEPT; 5075 5076#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5077 _LIBCPP_INLINE_VISIBILITY 5078 weak_ptr(weak_ptr&& __r) _NOEXCEPT; 5079 template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r, 5080 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 5081 _NOEXCEPT; 5082#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5083 ~weak_ptr(); 5084 5085 _LIBCPP_INLINE_VISIBILITY 5086 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT; 5087 template<class _Yp> 5088 typename enable_if 5089 < 5090 is_convertible<_Yp*, element_type*>::value, 5091 weak_ptr& 5092 >::type 5093 _LIBCPP_INLINE_VISIBILITY 5094 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT; 5095 5096#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5097 5098 _LIBCPP_INLINE_VISIBILITY 5099 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT; 5100 template<class _Yp> 5101 typename enable_if 5102 < 5103 is_convertible<_Yp*, element_type*>::value, 5104 weak_ptr& 5105 >::type 5106 _LIBCPP_INLINE_VISIBILITY 5107 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT; 5108 5109#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5110 5111 template<class _Yp> 5112 typename enable_if 5113 < 5114 is_convertible<_Yp*, element_type*>::value, 5115 weak_ptr& 5116 >::type 5117 _LIBCPP_INLINE_VISIBILITY 5118 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT; 5119 5120 _LIBCPP_INLINE_VISIBILITY 5121 void swap(weak_ptr& __r) _NOEXCEPT; 5122 _LIBCPP_INLINE_VISIBILITY 5123 void reset() _NOEXCEPT; 5124 5125 _LIBCPP_INLINE_VISIBILITY 5126 long use_count() const _NOEXCEPT 5127 {return __cntrl_ ? __cntrl_->use_count() : 0;} 5128 _LIBCPP_INLINE_VISIBILITY 5129 bool expired() const _NOEXCEPT 5130 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} 5131 shared_ptr<_Tp> lock() const _NOEXCEPT; 5132 template<class _Up> 5133 _LIBCPP_INLINE_VISIBILITY 5134 bool owner_before(const shared_ptr<_Up>& __r) const 5135 {return __cntrl_ < __r.__cntrl_;} 5136 template<class _Up> 5137 _LIBCPP_INLINE_VISIBILITY 5138 bool owner_before(const weak_ptr<_Up>& __r) const 5139 {return __cntrl_ < __r.__cntrl_;} 5140 5141 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 5142 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr; 5143}; 5144 5145template<class _Tp> 5146inline 5147_LIBCPP_CONSTEXPR 5148weak_ptr<_Tp>::weak_ptr() _NOEXCEPT 5149 : __ptr_(0), 5150 __cntrl_(0) 5151{ 5152} 5153 5154template<class _Tp> 5155inline 5156weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT 5157 : __ptr_(__r.__ptr_), 5158 __cntrl_(__r.__cntrl_) 5159{ 5160 if (__cntrl_) 5161 __cntrl_->__add_weak(); 5162} 5163 5164template<class _Tp> 5165template<class _Yp> 5166inline 5167weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, 5168 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5169 _NOEXCEPT 5170 : __ptr_(__r.__ptr_), 5171 __cntrl_(__r.__cntrl_) 5172{ 5173 if (__cntrl_) 5174 __cntrl_->__add_weak(); 5175} 5176 5177template<class _Tp> 5178template<class _Yp> 5179inline 5180weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, 5181 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5182 _NOEXCEPT 5183 : __ptr_(__r.__ptr_), 5184 __cntrl_(__r.__cntrl_) 5185{ 5186 if (__cntrl_) 5187 __cntrl_->__add_weak(); 5188} 5189 5190#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5191 5192template<class _Tp> 5193inline 5194weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT 5195 : __ptr_(__r.__ptr_), 5196 __cntrl_(__r.__cntrl_) 5197{ 5198 __r.__ptr_ = 0; 5199 __r.__cntrl_ = 0; 5200} 5201 5202template<class _Tp> 5203template<class _Yp> 5204inline 5205weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r, 5206 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5207 _NOEXCEPT 5208 : __ptr_(__r.__ptr_), 5209 __cntrl_(__r.__cntrl_) 5210{ 5211 __r.__ptr_ = 0; 5212 __r.__cntrl_ = 0; 5213} 5214 5215#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5216 5217template<class _Tp> 5218weak_ptr<_Tp>::~weak_ptr() 5219{ 5220 if (__cntrl_) 5221 __cntrl_->__release_weak(); 5222} 5223 5224template<class _Tp> 5225inline 5226weak_ptr<_Tp>& 5227weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT 5228{ 5229 weak_ptr(__r).swap(*this); 5230 return *this; 5231} 5232 5233template<class _Tp> 5234template<class _Yp> 5235inline 5236typename enable_if 5237< 5238 is_convertible<_Yp*, _Tp*>::value, 5239 weak_ptr<_Tp>& 5240>::type 5241weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT 5242{ 5243 weak_ptr(__r).swap(*this); 5244 return *this; 5245} 5246 5247#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5248 5249template<class _Tp> 5250inline 5251weak_ptr<_Tp>& 5252weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT 5253{ 5254 weak_ptr(_VSTD::move(__r)).swap(*this); 5255 return *this; 5256} 5257 5258template<class _Tp> 5259template<class _Yp> 5260inline 5261typename enable_if 5262< 5263 is_convertible<_Yp*, _Tp*>::value, 5264 weak_ptr<_Tp>& 5265>::type 5266weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT 5267{ 5268 weak_ptr(_VSTD::move(__r)).swap(*this); 5269 return *this; 5270} 5271 5272#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5273 5274template<class _Tp> 5275template<class _Yp> 5276inline 5277typename enable_if 5278< 5279 is_convertible<_Yp*, _Tp*>::value, 5280 weak_ptr<_Tp>& 5281>::type 5282weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT 5283{ 5284 weak_ptr(__r).swap(*this); 5285 return *this; 5286} 5287 5288template<class _Tp> 5289inline 5290void 5291weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT 5292{ 5293 _VSTD::swap(__ptr_, __r.__ptr_); 5294 _VSTD::swap(__cntrl_, __r.__cntrl_); 5295} 5296 5297template<class _Tp> 5298inline _LIBCPP_INLINE_VISIBILITY 5299void 5300swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT 5301{ 5302 __x.swap(__y); 5303} 5304 5305template<class _Tp> 5306inline 5307void 5308weak_ptr<_Tp>::reset() _NOEXCEPT 5309{ 5310 weak_ptr().swap(*this); 5311} 5312 5313template<class _Tp> 5314template<class _Yp> 5315shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, 5316 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 5317 : __ptr_(__r.__ptr_), 5318 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) 5319{ 5320 if (__cntrl_ == 0) 5321#ifndef _LIBCPP_NO_EXCEPTIONS 5322 throw bad_weak_ptr(); 5323#else 5324 assert(!"bad_weak_ptr"); 5325#endif 5326} 5327 5328template<class _Tp> 5329shared_ptr<_Tp> 5330weak_ptr<_Tp>::lock() const _NOEXCEPT 5331{ 5332 shared_ptr<_Tp> __r; 5333 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; 5334 if (__r.__cntrl_) 5335 __r.__ptr_ = __ptr_; 5336 return __r; 5337} 5338 5339#if _LIBCPP_STD_VER > 14 5340template <class _Tp = void> struct owner_less; 5341#else 5342template <class _Tp> struct owner_less; 5343#endif 5344 5345template <class _Tp> 5346struct _LIBCPP_TYPE_VIS_ONLY owner_less<shared_ptr<_Tp> > 5347 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> 5348{ 5349 typedef bool result_type; 5350 _LIBCPP_INLINE_VISIBILITY 5351 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5352 {return __x.owner_before(__y);} 5353 _LIBCPP_INLINE_VISIBILITY 5354 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5355 {return __x.owner_before(__y);} 5356 _LIBCPP_INLINE_VISIBILITY 5357 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5358 {return __x.owner_before(__y);} 5359}; 5360 5361template <class _Tp> 5362struct _LIBCPP_TYPE_VIS_ONLY owner_less<weak_ptr<_Tp> > 5363 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> 5364{ 5365 typedef bool result_type; 5366 _LIBCPP_INLINE_VISIBILITY 5367 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5368 {return __x.owner_before(__y);} 5369 _LIBCPP_INLINE_VISIBILITY 5370 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5371 {return __x.owner_before(__y);} 5372 _LIBCPP_INLINE_VISIBILITY 5373 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5374 {return __x.owner_before(__y);} 5375}; 5376 5377#if _LIBCPP_STD_VER > 14 5378template <> 5379struct _LIBCPP_TYPE_VIS_ONLY owner_less<void> 5380{ 5381 template <class _Tp, class _Up> 5382 _LIBCPP_INLINE_VISIBILITY 5383 bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const 5384 {return __x.owner_before(__y);} 5385 template <class _Tp, class _Up> 5386 _LIBCPP_INLINE_VISIBILITY 5387 bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const 5388 {return __x.owner_before(__y);} 5389 template <class _Tp, class _Up> 5390 _LIBCPP_INLINE_VISIBILITY 5391 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const 5392 {return __x.owner_before(__y);} 5393 template <class _Tp, class _Up> 5394 _LIBCPP_INLINE_VISIBILITY 5395 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const 5396 {return __x.owner_before(__y);} 5397 typedef void is_transparent; 5398}; 5399#endif 5400 5401template<class _Tp> 5402class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this 5403{ 5404 mutable weak_ptr<_Tp> __weak_this_; 5405protected: 5406 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 5407 enable_shared_from_this() _NOEXCEPT {} 5408 _LIBCPP_INLINE_VISIBILITY 5409 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {} 5410 _LIBCPP_INLINE_VISIBILITY 5411 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT 5412 {return *this;} 5413 _LIBCPP_INLINE_VISIBILITY 5414 ~enable_shared_from_this() {} 5415public: 5416 _LIBCPP_INLINE_VISIBILITY 5417 shared_ptr<_Tp> shared_from_this() 5418 {return shared_ptr<_Tp>(__weak_this_);} 5419 _LIBCPP_INLINE_VISIBILITY 5420 shared_ptr<_Tp const> shared_from_this() const 5421 {return shared_ptr<const _Tp>(__weak_this_);} 5422 5423 template <class _Up> friend class shared_ptr; 5424}; 5425 5426template <class _Tp> 5427struct _LIBCPP_TYPE_VIS_ONLY hash<shared_ptr<_Tp> > 5428{ 5429 typedef shared_ptr<_Tp> argument_type; 5430 typedef size_t result_type; 5431 _LIBCPP_INLINE_VISIBILITY 5432 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 5433 { 5434 return hash<_Tp*>()(__ptr.get()); 5435 } 5436}; 5437 5438template<class _CharT, class _Traits, class _Yp> 5439inline _LIBCPP_INLINE_VISIBILITY 5440basic_ostream<_CharT, _Traits>& 5441operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p); 5442 5443// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only 5444// enabled with clang. 5445#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS) 5446 5447class _LIBCPP_TYPE_VIS __sp_mut 5448{ 5449 void* __lx; 5450public: 5451 void lock() _NOEXCEPT; 5452 void unlock() _NOEXCEPT; 5453 5454private: 5455 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT; 5456 __sp_mut(const __sp_mut&); 5457 __sp_mut& operator=(const __sp_mut&); 5458 5459 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5460}; 5461 5462_LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5463 5464template <class _Tp> 5465inline _LIBCPP_INLINE_VISIBILITY 5466bool 5467atomic_is_lock_free(const shared_ptr<_Tp>*) 5468{ 5469 return false; 5470} 5471 5472template <class _Tp> 5473shared_ptr<_Tp> 5474atomic_load(const shared_ptr<_Tp>* __p) 5475{ 5476 __sp_mut& __m = __get_sp_mut(__p); 5477 __m.lock(); 5478 shared_ptr<_Tp> __q = *__p; 5479 __m.unlock(); 5480 return __q; 5481} 5482 5483template <class _Tp> 5484inline _LIBCPP_INLINE_VISIBILITY 5485shared_ptr<_Tp> 5486atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) 5487{ 5488 return atomic_load(__p); 5489} 5490 5491template <class _Tp> 5492void 5493atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5494{ 5495 __sp_mut& __m = __get_sp_mut(__p); 5496 __m.lock(); 5497 __p->swap(__r); 5498 __m.unlock(); 5499} 5500 5501template <class _Tp> 5502inline _LIBCPP_INLINE_VISIBILITY 5503void 5504atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5505{ 5506 atomic_store(__p, __r); 5507} 5508 5509template <class _Tp> 5510shared_ptr<_Tp> 5511atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5512{ 5513 __sp_mut& __m = __get_sp_mut(__p); 5514 __m.lock(); 5515 __p->swap(__r); 5516 __m.unlock(); 5517 return __r; 5518} 5519 5520template <class _Tp> 5521inline _LIBCPP_INLINE_VISIBILITY 5522shared_ptr<_Tp> 5523atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5524{ 5525 return atomic_exchange(__p, __r); 5526} 5527 5528template <class _Tp> 5529bool 5530atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5531{ 5532 __sp_mut& __m = __get_sp_mut(__p); 5533 __m.lock(); 5534 if (__p->__owner_equivalent(*__v)) 5535 { 5536 *__p = __w; 5537 __m.unlock(); 5538 return true; 5539 } 5540 *__v = *__p; 5541 __m.unlock(); 5542 return false; 5543} 5544 5545template <class _Tp> 5546inline _LIBCPP_INLINE_VISIBILITY 5547bool 5548atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5549{ 5550 return atomic_compare_exchange_strong(__p, __v, __w); 5551} 5552 5553template <class _Tp> 5554inline _LIBCPP_INLINE_VISIBILITY 5555bool 5556atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5557 shared_ptr<_Tp> __w, memory_order, memory_order) 5558{ 5559 return atomic_compare_exchange_strong(__p, __v, __w); 5560} 5561 5562template <class _Tp> 5563inline _LIBCPP_INLINE_VISIBILITY 5564bool 5565atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5566 shared_ptr<_Tp> __w, memory_order, memory_order) 5567{ 5568 return atomic_compare_exchange_weak(__p, __v, __w); 5569} 5570 5571#endif // defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS) 5572 5573//enum class 5574struct _LIBCPP_TYPE_VIS pointer_safety 5575{ 5576 enum __lx 5577 { 5578 relaxed, 5579 preferred, 5580 strict 5581 }; 5582 5583 __lx __v_; 5584 5585 _LIBCPP_INLINE_VISIBILITY 5586 pointer_safety(__lx __v) : __v_(__v) {} 5587 _LIBCPP_INLINE_VISIBILITY 5588 operator int() const {return __v_;} 5589}; 5590 5591_LIBCPP_FUNC_VIS void declare_reachable(void* __p); 5592_LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n); 5593_LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n); 5594_LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT; 5595_LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p); 5596 5597template <class _Tp> 5598inline _LIBCPP_INLINE_VISIBILITY 5599_Tp* 5600undeclare_reachable(_Tp* __p) 5601{ 5602 return static_cast<_Tp*>(__undeclare_reachable(__p)); 5603} 5604 5605_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); 5606 5607// --- Helper for container swap -- 5608template <typename _Alloc> 5609_LIBCPP_INLINE_VISIBILITY 5610void __swap_allocator(_Alloc & __a1, _Alloc & __a2) 5611#if _LIBCPP_STD_VER >= 14 5612 _NOEXCEPT 5613#else 5614 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5615#endif 5616{ 5617 __swap_allocator(__a1, __a2, 5618 integral_constant<bool, _VSTD::allocator_traits<_Alloc>::propagate_on_container_swap::value>()); 5619} 5620 5621template <typename _Alloc> 5622_LIBCPP_INLINE_VISIBILITY 5623void __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type) 5624#if _LIBCPP_STD_VER >= 14 5625 _NOEXCEPT 5626#else 5627 _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 5628#endif 5629{ 5630 using _VSTD::swap; 5631 swap(__a1, __a2); 5632} 5633 5634template <typename _Alloc> 5635_LIBCPP_INLINE_VISIBILITY 5636void __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {} 5637 5638template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> > 5639struct __noexcept_move_assign_container : public integral_constant<bool, 5640 _Traits::propagate_on_container_move_assignment::value 5641#if _LIBCPP_STD_VER > 14 5642 || _Traits::is_always_equal::value 5643#else 5644 && is_nothrow_move_assignable<_Alloc>::value 5645#endif 5646 > {}; 5647 5648_LIBCPP_END_NAMESPACE_STD 5649 5650#endif // _LIBCPP_MEMORY 5651