memory revision 249998
1// -*- C++ -*- 2//===-------------------------- memory ------------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_MEMORY 12#define _LIBCPP_MEMORY 13 14/* 15 memory synopsis 16 17namespace std 18{ 19 20struct allocator_arg_t { }; 21constexpr allocator_arg_t allocator_arg = allocator_arg_t(); 22 23template <class T, class Alloc> struct uses_allocator; 24 25template <class Ptr> 26struct pointer_traits 27{ 28 typedef Ptr pointer; 29 typedef <details> element_type; 30 typedef <details> difference_type; 31 32 template <class U> using rebind = <details>; 33 34 static pointer pointer_to(<details>); 35}; 36 37template <class T> 38struct pointer_traits<T*> 39{ 40 typedef T* pointer; 41 typedef T element_type; 42 typedef ptrdiff_t difference_type; 43 44 template <class U> using rebind = U*; 45 46 static pointer pointer_to(<details>) noexcept; 47}; 48 49template <class Alloc> 50struct allocator_traits 51{ 52 typedef Alloc allocator_type; 53 typedef typename allocator_type::value_type 54 value_type; 55 56 typedef Alloc::pointer | value_type* pointer; 57 typedef Alloc::const_pointer 58 | pointer_traits<pointer>::rebind<const value_type> 59 const_pointer; 60 typedef Alloc::void_pointer 61 | pointer_traits<pointer>::rebind<void> 62 void_pointer; 63 typedef Alloc::const_void_pointer 64 | pointer_traits<pointer>::rebind<const void> 65 const_void_pointer; 66 typedef Alloc::difference_type 67 | pointer_traits<pointer>::difference_type 68 difference_type; 69 typedef Alloc::size_type 70 | make_unsigned<difference_type>::type 71 size_type; 72 typedef Alloc::propagate_on_container_copy_assignment 73 | false_type propagate_on_container_copy_assignment; 74 typedef Alloc::propagate_on_container_move_assignment 75 | false_type propagate_on_container_move_assignment; 76 typedef Alloc::propagate_on_container_swap 77 | false_type propagate_on_container_swap; 78 79 template <class T> using rebind_alloc = Alloc::rebind<U>::other | Alloc<T, Args...>; 80 template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>; 81 82 static pointer allocate(allocator_type& a, size_type n); 83 static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint); 84 85 static void deallocate(allocator_type& a, pointer p, size_type n) noexcept; 86 87 template <class T, class... Args> 88 static void construct(allocator_type& a, T* p, Args&&... args); 89 90 template <class T> 91 static void destroy(allocator_type& a, T* p); 92 93 static size_type max_size(const allocator_type& a); 94 95 static allocator_type 96 select_on_container_copy_construction(const allocator_type& a); 97}; 98 99template <> 100class allocator<void> 101{ 102public: 103 typedef void* pointer; 104 typedef const void* const_pointer; 105 typedef void value_type; 106 107 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 108}; 109 110template <class T> 111class allocator 112{ 113public: 114 typedef size_t size_type; 115 typedef ptrdiff_t difference_type; 116 typedef T* pointer; 117 typedef const T* const_pointer; 118 typedef typename add_lvalue_reference<T>::type reference; 119 typedef typename add_lvalue_reference<const T>::type const_reference; 120 typedef T value_type; 121 122 template <class U> struct rebind {typedef allocator<U> other;}; 123 124 allocator() noexcept; 125 allocator(const allocator&) noexcept; 126 template <class U> allocator(const allocator<U>&) noexcept; 127 ~allocator(); 128 pointer address(reference x) const noexcept; 129 const_pointer address(const_reference x) const noexcept; 130 pointer allocate(size_type, allocator<void>::const_pointer hint = 0); 131 void deallocate(pointer p, size_type n) noexcept; 132 size_type max_size() const noexcept; 133 template<class U, class... Args> 134 void construct(U* p, Args&&... args); 135 template <class U> 136 void destroy(U* p); 137}; 138 139template <class T, class U> 140bool operator==(const allocator<T>&, const allocator<U>&) noexcept; 141 142template <class T, class U> 143bool operator!=(const allocator<T>&, const allocator<U>&) noexcept; 144 145template <class OutputIterator, class T> 146class raw_storage_iterator 147 : public iterator<output_iterator_tag, 148 T, // purposefully not C++03 149 ptrdiff_t, // purposefully not C++03 150 T*, // purposefully not C++03 151 raw_storage_iterator&> // purposefully not C++03 152{ 153public: 154 explicit raw_storage_iterator(OutputIterator x); 155 raw_storage_iterator& operator*(); 156 raw_storage_iterator& operator=(const T& element); 157 raw_storage_iterator& operator++(); 158 raw_storage_iterator operator++(int); 159}; 160 161template <class T> pair<T*,ptrdiff_t> get_temporary_buffer(ptrdiff_t n) noexcept; 162template <class T> void return_temporary_buffer(T* p) noexcept; 163 164template <class T> T* addressof(T& r) noexcept; 165 166template <class InputIterator, class ForwardIterator> 167ForwardIterator 168uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result); 169 170template <class InputIterator, class Size, class ForwardIterator> 171ForwardIterator 172uninitialized_copy_n(InputIterator first, Size n, ForwardIterator result); 173 174template <class ForwardIterator, class T> 175void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x); 176 177template <class ForwardIterator, class Size, class T> 178ForwardIterator 179uninitialized_fill_n(ForwardIterator first, Size n, const T& x); 180 181template <class Y> struct auto_ptr_ref {}; 182 183template<class X> 184class auto_ptr 185{ 186public: 187 typedef X element_type; 188 189 explicit auto_ptr(X* p =0) throw(); 190 auto_ptr(auto_ptr&) throw(); 191 template<class Y> auto_ptr(auto_ptr<Y>&) throw(); 192 auto_ptr& operator=(auto_ptr&) throw(); 193 template<class Y> auto_ptr& operator=(auto_ptr<Y>&) throw(); 194 auto_ptr& operator=(auto_ptr_ref<X> r) throw(); 195 ~auto_ptr() throw(); 196 197 typename add_lvalue_reference<X>::type operator*() const throw(); 198 X* operator->() const throw(); 199 X* get() const throw(); 200 X* release() throw(); 201 void reset(X* p =0) throw(); 202 203 auto_ptr(auto_ptr_ref<X>) throw(); 204 template<class Y> operator auto_ptr_ref<Y>() throw(); 205 template<class Y> operator auto_ptr<Y>() throw(); 206}; 207 208template <class T> 209struct default_delete 210{ 211 constexpr default_delete() noexcept = default; 212 template <class U> default_delete(const default_delete<U>&) noexcept; 213 214 void operator()(T*) const noexcept; 215}; 216 217template <class T> 218struct default_delete<T[]> 219{ 220 constexpr default_delete() noexcept = default; 221 void operator()(T*) const noexcept; 222 template <class U> void operator()(U*) const = delete; 223}; 224 225template <class T, class D = default_delete<T>> 226class unique_ptr 227{ 228public: 229 typedef see below pointer; 230 typedef T element_type; 231 typedef D deleter_type; 232 233 // constructors 234 constexpr unique_ptr() noexcept; 235 explicit unique_ptr(pointer p) noexcept; 236 unique_ptr(pointer p, see below d1) noexcept; 237 unique_ptr(pointer p, see below d2) noexcept; 238 unique_ptr(unique_ptr&& u) noexcept; 239 unique_ptr(nullptr_t) noexcept : unique_ptr() { } 240 template <class U, class E> 241 unique_ptr(unique_ptr<U, E>&& u) noexcept; 242 template <class U> 243 unique_ptr(auto_ptr<U>&& u) noexcept; 244 245 // destructor 246 ~unique_ptr(); 247 248 // assignment 249 unique_ptr& operator=(unique_ptr&& u) noexcept; 250 template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept; 251 unique_ptr& operator=(nullptr_t) noexcept; 252 253 // observers 254 typename add_lvalue_reference<T>::type operator*() const; 255 pointer operator->() const noexcept; 256 pointer get() const noexcept; 257 deleter_type& get_deleter() noexcept; 258 const deleter_type& get_deleter() const noexcept; 259 explicit operator bool() const noexcept; 260 261 // modifiers 262 pointer release() noexcept; 263 void reset(pointer p = pointer()) noexcept; 264 void swap(unique_ptr& u) noexcept; 265}; 266 267template <class T, class D> 268class unique_ptr<T[], D> 269{ 270public: 271 typedef implementation-defined pointer; 272 typedef T element_type; 273 typedef D deleter_type; 274 275 // constructors 276 constexpr unique_ptr() noexcept; 277 explicit unique_ptr(pointer p) noexcept; 278 unique_ptr(pointer p, see below d) noexcept; 279 unique_ptr(pointer p, see below d) noexcept; 280 unique_ptr(unique_ptr&& u) noexcept; 281 unique_ptr(nullptr_t) noexcept : unique_ptr() { } 282 283 // destructor 284 ~unique_ptr(); 285 286 // assignment 287 unique_ptr& operator=(unique_ptr&& u) noexcept; 288 unique_ptr& operator=(nullptr_t) noexcept; 289 290 // observers 291 T& operator[](size_t i) const; 292 pointer get() const noexcept; 293 deleter_type& get_deleter() noexcept; 294 const deleter_type& get_deleter() const noexcept; 295 explicit operator bool() const noexcept; 296 297 // modifiers 298 pointer release() noexcept; 299 void reset(pointer p = pointer()) noexcept; 300 void reset(nullptr_t) noexcept; 301 template <class U> void reset(U) = delete; 302 void swap(unique_ptr& u) noexcept; 303}; 304 305template <class T, class D> 306 void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept; 307 308template <class T1, class D1, class T2, class D2> 309 bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 310template <class T1, class D1, class T2, class D2> 311 bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 312template <class T1, class D1, class T2, class D2> 313 bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 314template <class T1, class D1, class T2, class D2> 315 bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 316template <class T1, class D1, class T2, class D2> 317 bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 318template <class T1, class D1, class T2, class D2> 319 bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 320 321template <class T, class D> 322 bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; 323template <class T, class D> 324 bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept; 325template <class T, class D> 326 bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept; 327template <class T, class D> 328 bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept; 329 330template <class T, class D> 331 bool operator<(const unique_ptr<T, D>& x, nullptr_t); 332template <class T, class D> 333 bool operator<(nullptr_t, const unique_ptr<T, D>& y); 334template <class T, class D> 335 bool operator<=(const unique_ptr<T, D>& x, nullptr_t); 336template <class T, class D> 337 bool operator<=(nullptr_t, const unique_ptr<T, D>& y); 338template <class T, class D> 339 bool operator>(const unique_ptr<T, D>& x, nullptr_t); 340template <class T, class D> 341 bool operator>(nullptr_t, const unique_ptr<T, D>& y); 342template <class T, class D> 343 bool operator>=(const unique_ptr<T, D>& x, nullptr_t); 344template <class T, class D> 345 bool operator>=(nullptr_t, const unique_ptr<T, D>& y); 346 347class bad_weak_ptr 348 : public std::exception 349{ 350 bad_weak_ptr() noexcept; 351}; 352 353template<class T> 354class shared_ptr 355{ 356public: 357 typedef T element_type; 358 359 // constructors: 360 constexpr shared_ptr() noexcept; 361 template<class Y> explicit shared_ptr(Y* p); 362 template<class Y, class D> shared_ptr(Y* p, D d); 363 template<class Y, class D, class A> shared_ptr(Y* p, D d, A a); 364 template <class D> shared_ptr(nullptr_t p, D d); 365 template <class D, class A> shared_ptr(nullptr_t p, D d, A a); 366 template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p) noexcept; 367 shared_ptr(const shared_ptr& r) noexcept; 368 template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept; 369 shared_ptr(shared_ptr&& r) noexcept; 370 template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept; 371 template<class Y> explicit shared_ptr(const weak_ptr<Y>& r); 372 template<class Y> shared_ptr(auto_ptr<Y>&& r); 373 template <class Y, class D> shared_ptr(unique_ptr<Y, D>&& r); 374 shared_ptr(nullptr_t) : shared_ptr() { } 375 376 // destructor: 377 ~shared_ptr(); 378 379 // assignment: 380 shared_ptr& operator=(const shared_ptr& r) noexcept; 381 template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept; 382 shared_ptr& operator=(shared_ptr&& r) noexcept; 383 template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r); 384 template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); 385 template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r); 386 387 // modifiers: 388 void swap(shared_ptr& r) noexcept; 389 void reset() noexcept; 390 template<class Y> void reset(Y* p); 391 template<class Y, class D> void reset(Y* p, D d); 392 template<class Y, class D, class A> void reset(Y* p, D d, A a); 393 394 // observers: 395 T* get() const noexcept; 396 T& operator*() const noexcept; 397 T* operator->() const noexcept; 398 long use_count() const noexcept; 399 bool unique() const noexcept; 400 explicit operator bool() const noexcept; 401 template<class U> bool owner_before(shared_ptr<U> const& b) const; 402 template<class U> bool owner_before(weak_ptr<U> const& b) const; 403}; 404 405// shared_ptr comparisons: 406template<class T, class U> 407 bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 408template<class T, class U> 409 bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 410template<class T, class U> 411 bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 412template<class T, class U> 413 bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 414template<class T, class U> 415 bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 416template<class T, class U> 417 bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 418 419template <class T> 420 bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept; 421template <class T> 422 bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept; 423template <class T> 424 bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept; 425template <class T> 426 bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept; 427template <class T> 428 bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept; 429template <class T> 430bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept; 431template <class T> 432 bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept; 433template <class T> 434 bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept; 435template <class T> 436 bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept; 437template <class T> 438 bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept; 439template <class T> 440 bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept; 441template <class T> 442 bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept; 443 444// shared_ptr specialized algorithms: 445template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept; 446 447// shared_ptr casts: 448template<class T, class U> 449 shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept; 450template<class T, class U> 451 shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept; 452template<class T, class U> 453 shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept; 454 455// shared_ptr I/O: 456template<class E, class T, class Y> 457 basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, shared_ptr<Y> const& p); 458 459// shared_ptr get_deleter: 460template<class D, class T> D* get_deleter(shared_ptr<T> const& p) noexcept; 461 462template<class T, class... Args> 463 shared_ptr<T> make_shared(Args&&... args); 464template<class T, class A, class... Args> 465 shared_ptr<T> allocate_shared(const A& a, Args&&... args); 466 467template<class T> 468class weak_ptr 469{ 470public: 471 typedef T element_type; 472 473 // constructors 474 constexpr weak_ptr() noexcept; 475 template<class Y> weak_ptr(shared_ptr<Y> const& r) noexcept; 476 weak_ptr(weak_ptr const& r) noexcept; 477 template<class Y> weak_ptr(weak_ptr<Y> const& r) noexcept; 478 479 // destructor 480 ~weak_ptr(); 481 482 // assignment 483 weak_ptr& operator=(weak_ptr const& r) noexcept; 484 template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r) noexcept; 485 template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r) noexcept; 486 487 // modifiers 488 void swap(weak_ptr& r) noexcept; 489 void reset() noexcept; 490 491 // observers 492 long use_count() const noexcept; 493 bool expired() const noexcept; 494 shared_ptr<T> lock() const noexcept; 495 template<class U> bool owner_before(shared_ptr<U> const& b); 496 template<class U> bool owner_before(weak_ptr<U> const& b); 497}; 498 499// weak_ptr specialized algorithms: 500template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept; 501 502// class owner_less: 503template<class T> struct owner_less; 504 505template<class T> 506struct owner_less<shared_ptr<T>> 507 : binary_function<shared_ptr<T>, shared_ptr<T>, bool> 508{ 509 typedef bool result_type; 510 bool operator()(shared_ptr<T> const&, shared_ptr<T> const&) const; 511 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const; 512 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const; 513}; 514 515template<class T> 516struct owner_less<weak_ptr<T>> 517 : binary_function<weak_ptr<T>, weak_ptr<T>, bool> 518{ 519 typedef bool result_type; 520 bool operator()(weak_ptr<T> const&, weak_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> 526class enable_shared_from_this 527{ 528protected: 529 constexpr enable_shared_from_this() noexcept; 530 enable_shared_from_this(enable_shared_from_this const&) noexcept; 531 enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept; 532 ~enable_shared_from_this(); 533public: 534 shared_ptr<T> shared_from_this(); 535 shared_ptr<T const> shared_from_this() const; 536}; 537 538template<class T> 539 bool atomic_is_lock_free(const shared_ptr<T>* p); 540template<class T> 541 shared_ptr<T> atomic_load(const shared_ptr<T>* p); 542template<class T> 543 shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo); 544template<class T> 545 void atomic_store(shared_ptr<T>* p, shared_ptr<T> r); 546template<class T> 547 void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 548template<class T> 549 shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r); 550template<class T> 551 shared_ptr<T> 552 atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 553template<class T> 554 bool 555 atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 556template<class T> 557 bool 558 atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 559template<class T> 560 bool 561 atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 562 shared_ptr<T> w, memory_order success, 563 memory_order failure); 564template<class T> 565 bool 566 atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 567 shared_ptr<T> w, memory_order success, 568 memory_order failure); 569// Hash support 570template <class T> struct hash; 571template <class T, class D> struct hash<unique_ptr<T, D> >; 572template <class T> struct hash<shared_ptr<T> >; 573 574// Pointer safety 575enum class pointer_safety { relaxed, preferred, strict }; 576void declare_reachable(void *p); 577template <class T> T *undeclare_reachable(T *p); 578void declare_no_pointers(char *p, size_t n); 579void undeclare_no_pointers(char *p, size_t n); 580pointer_safety get_pointer_safety() noexcept; 581 582void* align(size_t alignment, size_t size, void*& ptr, size_t& space); 583 584} // std 585 586*/ 587 588#include <__config> 589#include <type_traits> 590#include <typeinfo> 591#include <cstddef> 592#include <cstdint> 593#include <new> 594#include <utility> 595#include <limits> 596#include <iterator> 597#include <__functional_base> 598#include <iosfwd> 599#include <tuple> 600#include <cstring> 601#if defined(_LIBCPP_NO_EXCEPTIONS) 602 #include <cassert> 603#endif 604 605#if __has_feature(cxx_atomic) 606# include <atomic> 607#endif 608 609#include <__undef_min_max> 610 611#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 612#pragma GCC system_header 613#endif 614 615_LIBCPP_BEGIN_NAMESPACE_STD 616 617// addressof 618 619template <class _Tp> 620inline _LIBCPP_INLINE_VISIBILITY 621_Tp* 622addressof(_Tp& __x) _NOEXCEPT 623{ 624 return (_Tp*)&reinterpret_cast<const volatile char&>(__x); 625} 626 627#if defined(_LIBCPP_HAS_OBJC_ARC) && !defined(_LIBCPP_PREDEFINED_OBJC_ARC_ADDRESSOF) 628// Objective-C++ Automatic Reference Counting uses qualified pointers 629// that require special addressof() signatures. When 630// _LIBCPP_PREDEFINED_OBJC_ARC_ADDRESSOF is defined, the compiler 631// itself is providing these definitions. Otherwise, we provide them. 632template <class _Tp> 633inline _LIBCPP_INLINE_VISIBILITY 634__strong _Tp* 635addressof(__strong _Tp& __x) _NOEXCEPT 636{ 637 return &__x; 638} 639 640#ifdef _LIBCPP_HAS_OBJC_ARC_WEAK 641template <class _Tp> 642inline _LIBCPP_INLINE_VISIBILITY 643__weak _Tp* 644addressof(__weak _Tp& __x) _NOEXCEPT 645{ 646 return &__x; 647} 648#endif 649 650template <class _Tp> 651inline _LIBCPP_INLINE_VISIBILITY 652__autoreleasing _Tp* 653addressof(__autoreleasing _Tp& __x) _NOEXCEPT 654{ 655 return &__x; 656} 657 658template <class _Tp> 659inline _LIBCPP_INLINE_VISIBILITY 660__unsafe_unretained _Tp* 661addressof(__unsafe_unretained _Tp& __x) _NOEXCEPT 662{ 663 return &__x; 664} 665#endif 666 667template <class _Tp> class allocator; 668 669template <> 670class _LIBCPP_TYPE_VIS allocator<void> 671{ 672public: 673 typedef void* pointer; 674 typedef const void* const_pointer; 675 typedef void value_type; 676 677 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 678}; 679 680template <> 681class _LIBCPP_TYPE_VIS allocator<const void> 682{ 683public: 684 typedef const void* pointer; 685 typedef const void* const_pointer; 686 typedef const void value_type; 687 688 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 689}; 690 691// pointer_traits 692 693template <class _Tp> 694struct __has_element_type 695{ 696private: 697 struct __two {char __lx; char __lxx;}; 698 template <class _Up> static __two __test(...); 699 template <class _Up> static char __test(typename _Up::element_type* = 0); 700public: 701 static const bool value = sizeof(__test<_Tp>(0)) == 1; 702}; 703 704template <class _Ptr, bool = __has_element_type<_Ptr>::value> 705struct __pointer_traits_element_type; 706 707template <class _Ptr> 708struct __pointer_traits_element_type<_Ptr, true> 709{ 710 typedef typename _Ptr::element_type type; 711}; 712 713#ifndef _LIBCPP_HAS_NO_VARIADICS 714 715template <template <class, class...> class _Sp, class _Tp, class ..._Args> 716struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true> 717{ 718 typedef typename _Sp<_Tp, _Args...>::element_type type; 719}; 720 721template <template <class, class...> class _Sp, class _Tp, class ..._Args> 722struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false> 723{ 724 typedef _Tp type; 725}; 726 727#else // _LIBCPP_HAS_NO_VARIADICS 728 729template <template <class> class _Sp, class _Tp> 730struct __pointer_traits_element_type<_Sp<_Tp>, true> 731{ 732 typedef typename _Sp<_Tp>::element_type type; 733}; 734 735template <template <class> class _Sp, class _Tp> 736struct __pointer_traits_element_type<_Sp<_Tp>, false> 737{ 738 typedef _Tp type; 739}; 740 741template <template <class, class> class _Sp, class _Tp, class _A0> 742struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true> 743{ 744 typedef typename _Sp<_Tp, _A0>::element_type type; 745}; 746 747template <template <class, class> class _Sp, class _Tp, class _A0> 748struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false> 749{ 750 typedef _Tp type; 751}; 752 753template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 754struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true> 755{ 756 typedef typename _Sp<_Tp, _A0, _A1>::element_type type; 757}; 758 759template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 760struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false> 761{ 762 typedef _Tp type; 763}; 764 765template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 766 class _A1, class _A2> 767struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true> 768{ 769 typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type; 770}; 771 772template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 773 class _A1, class _A2> 774struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false> 775{ 776 typedef _Tp type; 777}; 778 779#endif // _LIBCPP_HAS_NO_VARIADICS 780 781template <class _Tp> 782struct __has_difference_type 783{ 784private: 785 struct __two {char __lx; char __lxx;}; 786 template <class _Up> static __two __test(...); 787 template <class _Up> static char __test(typename _Up::difference_type* = 0); 788public: 789 static const bool value = sizeof(__test<_Tp>(0)) == 1; 790}; 791 792template <class _Ptr, bool = __has_difference_type<_Ptr>::value> 793struct __pointer_traits_difference_type 794{ 795 typedef ptrdiff_t type; 796}; 797 798template <class _Ptr> 799struct __pointer_traits_difference_type<_Ptr, true> 800{ 801 typedef typename _Ptr::difference_type type; 802}; 803 804template <class _Tp, class _Up> 805struct __has_rebind 806{ 807private: 808 struct __two {char __lx; char __lxx;}; 809 template <class _Xp> static __two __test(...); 810 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0); 811public: 812 static const bool value = sizeof(__test<_Tp>(0)) == 1; 813}; 814 815template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 816struct __pointer_traits_rebind 817{ 818#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 819 typedef typename _Tp::template rebind<_Up> type; 820#else 821 typedef typename _Tp::template rebind<_Up>::other type; 822#endif 823}; 824 825#ifndef _LIBCPP_HAS_NO_VARIADICS 826 827template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 828struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true> 829{ 830#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 831 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type; 832#else 833 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type; 834#endif 835}; 836 837template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 838struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false> 839{ 840 typedef _Sp<_Up, _Args...> type; 841}; 842 843#else // _LIBCPP_HAS_NO_VARIADICS 844 845template <template <class> class _Sp, class _Tp, class _Up> 846struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true> 847{ 848#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 849 typedef typename _Sp<_Tp>::template rebind<_Up> type; 850#else 851 typedef typename _Sp<_Tp>::template rebind<_Up>::other type; 852#endif 853}; 854 855template <template <class> class _Sp, class _Tp, class _Up> 856struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false> 857{ 858 typedef _Sp<_Up> type; 859}; 860 861template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 862struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true> 863{ 864#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 865 typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type; 866#else 867 typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type; 868#endif 869}; 870 871template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 872struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false> 873{ 874 typedef _Sp<_Up, _A0> type; 875}; 876 877template <template <class, class, class> class _Sp, class _Tp, class _A0, 878 class _A1, class _Up> 879struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true> 880{ 881#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 882 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type; 883#else 884 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type; 885#endif 886}; 887 888template <template <class, class, class> class _Sp, class _Tp, class _A0, 889 class _A1, class _Up> 890struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false> 891{ 892 typedef _Sp<_Up, _A0, _A1> type; 893}; 894 895template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 896 class _A1, class _A2, class _Up> 897struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true> 898{ 899#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 900 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type; 901#else 902 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 903#endif 904}; 905 906template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 907 class _A1, class _A2, class _Up> 908struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false> 909{ 910 typedef _Sp<_Up, _A0, _A1, _A2> type; 911}; 912 913#endif // _LIBCPP_HAS_NO_VARIADICS 914 915template <class _Ptr> 916struct _LIBCPP_TYPE_VIS pointer_traits 917{ 918 typedef _Ptr pointer; 919 typedef typename __pointer_traits_element_type<pointer>::type element_type; 920 typedef typename __pointer_traits_difference_type<pointer>::type difference_type; 921 922#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 923 template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type; 924#else 925 template <class _Up> struct rebind 926 {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;}; 927#endif // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 928 929private: 930 struct __nat {}; 931public: 932 _LIBCPP_INLINE_VISIBILITY 933 static pointer pointer_to(typename conditional<is_void<element_type>::value, 934 __nat, element_type>::type& __r) 935 {return pointer::pointer_to(__r);} 936}; 937 938template <class _Tp> 939struct _LIBCPP_TYPE_VIS pointer_traits<_Tp*> 940{ 941 typedef _Tp* pointer; 942 typedef _Tp element_type; 943 typedef ptrdiff_t difference_type; 944 945#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 946 template <class _Up> using rebind = _Up*; 947#else 948 template <class _Up> struct rebind {typedef _Up* other;}; 949#endif 950 951private: 952 struct __nat {}; 953public: 954 _LIBCPP_INLINE_VISIBILITY 955 static pointer pointer_to(typename conditional<is_void<element_type>::value, 956 __nat, element_type>::type& __r) _NOEXCEPT 957 {return _VSTD::addressof(__r);} 958}; 959 960// allocator_traits 961 962namespace __has_pointer_type_imp 963{ 964 template <class _Up> static __two test(...); 965 template <class _Up> static char test(typename _Up::pointer* = 0); 966} 967 968template <class _Tp> 969struct __has_pointer_type 970 : public integral_constant<bool, sizeof(__has_pointer_type_imp::test<_Tp>(0)) == 1> 971{ 972}; 973 974namespace __pointer_type_imp 975{ 976 977template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value> 978struct __pointer_type 979{ 980 typedef typename _Dp::pointer type; 981}; 982 983template <class _Tp, class _Dp> 984struct __pointer_type<_Tp, _Dp, false> 985{ 986 typedef _Tp* type; 987}; 988 989} // __pointer_type_imp 990 991template <class _Tp, class _Dp> 992struct __pointer_type 993{ 994 typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type; 995}; 996 997template <class _Tp> 998struct __has_const_pointer 999{ 1000private: 1001 struct __two {char __lx; char __lxx;}; 1002 template <class _Up> static __two __test(...); 1003 template <class _Up> static char __test(typename _Up::const_pointer* = 0); 1004public: 1005 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1006}; 1007 1008template <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value> 1009struct __const_pointer 1010{ 1011 typedef typename _Alloc::const_pointer type; 1012}; 1013 1014template <class _Tp, class _Ptr, class _Alloc> 1015struct __const_pointer<_Tp, _Ptr, _Alloc, false> 1016{ 1017#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1018 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp> type; 1019#else 1020 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type; 1021#endif 1022}; 1023 1024template <class _Tp> 1025struct __has_void_pointer 1026{ 1027private: 1028 struct __two {char __lx; char __lxx;}; 1029 template <class _Up> static __two __test(...); 1030 template <class _Up> static char __test(typename _Up::void_pointer* = 0); 1031public: 1032 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1033}; 1034 1035template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value> 1036struct __void_pointer 1037{ 1038 typedef typename _Alloc::void_pointer type; 1039}; 1040 1041template <class _Ptr, class _Alloc> 1042struct __void_pointer<_Ptr, _Alloc, false> 1043{ 1044#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1045 typedef typename pointer_traits<_Ptr>::template rebind<void> type; 1046#else 1047 typedef typename pointer_traits<_Ptr>::template rebind<void>::other type; 1048#endif 1049}; 1050 1051template <class _Tp> 1052struct __has_const_void_pointer 1053{ 1054private: 1055 struct __two {char __lx; char __lxx;}; 1056 template <class _Up> static __two __test(...); 1057 template <class _Up> static char __test(typename _Up::const_void_pointer* = 0); 1058public: 1059 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1060}; 1061 1062template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value> 1063struct __const_void_pointer 1064{ 1065 typedef typename _Alloc::const_void_pointer type; 1066}; 1067 1068template <class _Ptr, class _Alloc> 1069struct __const_void_pointer<_Ptr, _Alloc, false> 1070{ 1071#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1072 typedef typename pointer_traits<_Ptr>::template rebind<const void> type; 1073#else 1074 typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type; 1075#endif 1076}; 1077 1078template <class _Tp> 1079inline _LIBCPP_INLINE_VISIBILITY 1080_Tp* 1081__to_raw_pointer(_Tp* __p) _NOEXCEPT 1082{ 1083 return __p; 1084} 1085 1086template <class _Pointer> 1087inline _LIBCPP_INLINE_VISIBILITY 1088typename pointer_traits<_Pointer>::element_type* 1089__to_raw_pointer(_Pointer __p) _NOEXCEPT 1090{ 1091 return _VSTD::__to_raw_pointer(__p.operator->()); 1092} 1093 1094template <class _Tp> 1095struct __has_size_type 1096{ 1097private: 1098 struct __two {char __lx; char __lxx;}; 1099 template <class _Up> static __two __test(...); 1100 template <class _Up> static char __test(typename _Up::size_type* = 0); 1101public: 1102 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1103}; 1104 1105template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value> 1106struct __size_type 1107{ 1108 typedef typename make_unsigned<_DiffType>::type type; 1109}; 1110 1111template <class _Alloc, class _DiffType> 1112struct __size_type<_Alloc, _DiffType, true> 1113{ 1114 typedef typename _Alloc::size_type type; 1115}; 1116 1117template <class _Tp> 1118struct __has_propagate_on_container_copy_assignment 1119{ 1120private: 1121 struct __two {char __lx; char __lxx;}; 1122 template <class _Up> static __two __test(...); 1123 template <class _Up> static char __test(typename _Up::propagate_on_container_copy_assignment* = 0); 1124public: 1125 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1126}; 1127 1128template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value> 1129struct __propagate_on_container_copy_assignment 1130{ 1131 typedef false_type type; 1132}; 1133 1134template <class _Alloc> 1135struct __propagate_on_container_copy_assignment<_Alloc, true> 1136{ 1137 typedef typename _Alloc::propagate_on_container_copy_assignment type; 1138}; 1139 1140template <class _Tp> 1141struct __has_propagate_on_container_move_assignment 1142{ 1143private: 1144 struct __two {char __lx; char __lxx;}; 1145 template <class _Up> static __two __test(...); 1146 template <class _Up> static char __test(typename _Up::propagate_on_container_move_assignment* = 0); 1147public: 1148 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1149}; 1150 1151template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value> 1152struct __propagate_on_container_move_assignment 1153{ 1154 typedef false_type type; 1155}; 1156 1157template <class _Alloc> 1158struct __propagate_on_container_move_assignment<_Alloc, true> 1159{ 1160 typedef typename _Alloc::propagate_on_container_move_assignment type; 1161}; 1162 1163template <class _Tp> 1164struct __has_propagate_on_container_swap 1165{ 1166private: 1167 struct __two {char __lx; char __lxx;}; 1168 template <class _Up> static __two __test(...); 1169 template <class _Up> static char __test(typename _Up::propagate_on_container_swap* = 0); 1170public: 1171 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1172}; 1173 1174template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value> 1175struct __propagate_on_container_swap 1176{ 1177 typedef false_type type; 1178}; 1179 1180template <class _Alloc> 1181struct __propagate_on_container_swap<_Alloc, true> 1182{ 1183 typedef typename _Alloc::propagate_on_container_swap type; 1184}; 1185 1186template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 1187struct __has_rebind_other 1188{ 1189private: 1190 struct __two {char __lx; char __lxx;}; 1191 template <class _Xp> static __two __test(...); 1192 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0); 1193public: 1194 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1195}; 1196 1197template <class _Tp, class _Up> 1198struct __has_rebind_other<_Tp, _Up, false> 1199{ 1200 static const bool value = false; 1201}; 1202 1203template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value> 1204struct __allocator_traits_rebind 1205{ 1206 typedef typename _Tp::template rebind<_Up>::other type; 1207}; 1208 1209#ifndef _LIBCPP_HAS_NO_VARIADICS 1210 1211template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1212struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true> 1213{ 1214 typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type; 1215}; 1216 1217template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1218struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false> 1219{ 1220 typedef _Alloc<_Up, _Args...> type; 1221}; 1222 1223#else // _LIBCPP_HAS_NO_VARIADICS 1224 1225template <template <class> class _Alloc, class _Tp, class _Up> 1226struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true> 1227{ 1228 typedef typename _Alloc<_Tp>::template rebind<_Up>::other type; 1229}; 1230 1231template <template <class> class _Alloc, class _Tp, class _Up> 1232struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false> 1233{ 1234 typedef _Alloc<_Up> type; 1235}; 1236 1237template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1238struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true> 1239{ 1240 typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type; 1241}; 1242 1243template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1244struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false> 1245{ 1246 typedef _Alloc<_Up, _A0> type; 1247}; 1248 1249template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1250 class _A1, class _Up> 1251struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true> 1252{ 1253 typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other 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, false> 1259{ 1260 typedef _Alloc<_Up, _A0, _A1> type; 1261}; 1262 1263template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1264 class _A1, class _A2, class _Up> 1265struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true> 1266{ 1267 typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other 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, false> 1273{ 1274 typedef _Alloc<_Up, _A0, _A1, _A2> type; 1275}; 1276 1277#endif // _LIBCPP_HAS_NO_VARIADICS 1278 1279#ifndef _LIBCPP_HAS_NO_ADVANCED_SFINAE 1280 1281template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1282auto 1283__has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1284 -> decltype(__a.allocate(__sz, __p), true_type()); 1285 1286template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1287auto 1288__has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1289 -> false_type; 1290 1291template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1292struct __has_allocate_hint 1293 : integral_constant<bool, 1294 is_same< 1295 decltype(__has_allocate_hint_test(declval<_Alloc>(), 1296 declval<_SizeType>(), 1297 declval<_ConstVoidPtr>())), 1298 true_type>::value> 1299{ 1300}; 1301 1302#else // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1303 1304template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1305struct __has_allocate_hint 1306 : true_type 1307{ 1308}; 1309 1310#endif // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1311 1312#if !defined(_LIBCPP_HAS_NO_ADVANCED_SFINAE) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1313 1314template <class _Alloc, class _Tp, class ..._Args> 1315decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(), 1316 _VSTD::declval<_Args>()...), 1317 true_type()) 1318__has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args); 1319 1320template <class _Alloc, class _Pointer, class ..._Args> 1321false_type 1322__has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args); 1323 1324template <class _Alloc, class _Pointer, class ..._Args> 1325struct __has_construct 1326 : integral_constant<bool, 1327 is_same< 1328 decltype(__has_construct_test(declval<_Alloc>(), 1329 declval<_Pointer>(), 1330 declval<_Args>()...)), 1331 true_type>::value> 1332{ 1333}; 1334 1335template <class _Alloc, class _Pointer> 1336auto 1337__has_destroy_test(_Alloc&& __a, _Pointer&& __p) 1338 -> decltype(__a.destroy(__p), true_type()); 1339 1340template <class _Alloc, class _Pointer> 1341auto 1342__has_destroy_test(const _Alloc& __a, _Pointer&& __p) 1343 -> false_type; 1344 1345template <class _Alloc, class _Pointer> 1346struct __has_destroy 1347 : integral_constant<bool, 1348 is_same< 1349 decltype(__has_destroy_test(declval<_Alloc>(), 1350 declval<_Pointer>())), 1351 true_type>::value> 1352{ 1353}; 1354 1355template <class _Alloc> 1356auto 1357__has_max_size_test(_Alloc&& __a) 1358 -> decltype(__a.max_size(), true_type()); 1359 1360template <class _Alloc> 1361auto 1362__has_max_size_test(const volatile _Alloc& __a) 1363 -> false_type; 1364 1365template <class _Alloc> 1366struct __has_max_size 1367 : integral_constant<bool, 1368 is_same< 1369 decltype(__has_max_size_test(declval<_Alloc&>())), 1370 true_type>::value> 1371{ 1372}; 1373 1374template <class _Alloc> 1375auto 1376__has_select_on_container_copy_construction_test(_Alloc&& __a) 1377 -> decltype(__a.select_on_container_copy_construction(), true_type()); 1378 1379template <class _Alloc> 1380auto 1381__has_select_on_container_copy_construction_test(const volatile _Alloc& __a) 1382 -> false_type; 1383 1384template <class _Alloc> 1385struct __has_select_on_container_copy_construction 1386 : integral_constant<bool, 1387 is_same< 1388 decltype(__has_select_on_container_copy_construction_test(declval<_Alloc&>())), 1389 true_type>::value> 1390{ 1391}; 1392 1393#else // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1394 1395#ifndef _LIBCPP_HAS_NO_VARIADICS 1396 1397template <class _Alloc, class _Pointer, class ..._Args> 1398struct __has_construct 1399 : false_type 1400{ 1401}; 1402 1403#else // _LIBCPP_HAS_NO_VARIADICS 1404 1405template <class _Alloc, class _Pointer, class _Args> 1406struct __has_construct 1407 : false_type 1408{ 1409}; 1410 1411#endif // _LIBCPP_HAS_NO_VARIADICS 1412 1413template <class _Alloc, class _Pointer> 1414struct __has_destroy 1415 : false_type 1416{ 1417}; 1418 1419template <class _Alloc> 1420struct __has_max_size 1421 : true_type 1422{ 1423}; 1424 1425template <class _Alloc> 1426struct __has_select_on_container_copy_construction 1427 : false_type 1428{ 1429}; 1430 1431#endif // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1432 1433template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value> 1434struct __alloc_traits_difference_type 1435{ 1436 typedef typename pointer_traits<_Ptr>::difference_type type; 1437}; 1438 1439template <class _Alloc, class _Ptr> 1440struct __alloc_traits_difference_type<_Alloc, _Ptr, true> 1441{ 1442 typedef typename _Alloc::difference_type type; 1443}; 1444 1445template <class _Alloc> 1446struct _LIBCPP_TYPE_VIS allocator_traits 1447{ 1448 typedef _Alloc allocator_type; 1449 typedef typename allocator_type::value_type value_type; 1450 1451 typedef typename __pointer_type<value_type, allocator_type>::type pointer; 1452 typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer; 1453 typedef typename __void_pointer<pointer, allocator_type>::type void_pointer; 1454 typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer; 1455 1456 typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type; 1457 typedef typename __size_type<allocator_type, difference_type>::type size_type; 1458 1459 typedef typename __propagate_on_container_copy_assignment<allocator_type>::type 1460 propagate_on_container_copy_assignment; 1461 typedef typename __propagate_on_container_move_assignment<allocator_type>::type 1462 propagate_on_container_move_assignment; 1463 typedef typename __propagate_on_container_swap<allocator_type>::type 1464 propagate_on_container_swap; 1465 1466#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1467 template <class _Tp> using rebind_alloc = 1468 typename __allocator_traits_rebind<allocator_type, _Tp>::type; 1469 template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>; 1470#else // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1471 template <class _Tp> struct rebind_alloc 1472 {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;}; 1473 template <class _Tp> struct rebind_traits 1474 {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;}; 1475#endif // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1476 1477 _LIBCPP_INLINE_VISIBILITY 1478 static pointer allocate(allocator_type& __a, size_type __n) 1479 {return __a.allocate(__n);} 1480 _LIBCPP_INLINE_VISIBILITY 1481 static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint) 1482 {return allocate(__a, __n, __hint, 1483 __has_allocate_hint<allocator_type, size_type, const_void_pointer>());} 1484 1485 _LIBCPP_INLINE_VISIBILITY 1486 static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT 1487 {__a.deallocate(__p, __n);} 1488 1489#ifndef _LIBCPP_HAS_NO_VARIADICS 1490 template <class _Tp, class... _Args> 1491 _LIBCPP_INLINE_VISIBILITY 1492 static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args) 1493 {__construct(__has_construct<allocator_type, pointer, _Args...>(), 1494 __a, __p, _VSTD::forward<_Args>(__args)...);} 1495#else // _LIBCPP_HAS_NO_VARIADICS 1496 template <class _Tp> 1497 _LIBCPP_INLINE_VISIBILITY 1498 static void construct(allocator_type& __a, _Tp* __p) 1499 { 1500 ::new ((void*)__p) _Tp(); 1501 } 1502 template <class _Tp, class _A0> 1503 _LIBCPP_INLINE_VISIBILITY 1504 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0) 1505 { 1506 ::new ((void*)__p) _Tp(__a0); 1507 } 1508 template <class _Tp, class _A0, class _A1> 1509 _LIBCPP_INLINE_VISIBILITY 1510 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0, 1511 const _A1& __a1) 1512 { 1513 ::new ((void*)__p) _Tp(__a0, __a1); 1514 } 1515 template <class _Tp, class _A0, class _A1, class _A2> 1516 _LIBCPP_INLINE_VISIBILITY 1517 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0, 1518 const _A1& __a1, const _A2& __a2) 1519 { 1520 ::new ((void*)__p) _Tp(__a0, __a1, __a2); 1521 } 1522#endif // _LIBCPP_HAS_NO_VARIADICS 1523 1524 template <class _Tp> 1525 _LIBCPP_INLINE_VISIBILITY 1526 static void destroy(allocator_type& __a, _Tp* __p) 1527 {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);} 1528 1529 _LIBCPP_INLINE_VISIBILITY 1530 static size_type max_size(const allocator_type& __a) 1531 {return __max_size(__has_max_size<const allocator_type>(), __a);} 1532 1533 _LIBCPP_INLINE_VISIBILITY 1534 static allocator_type 1535 select_on_container_copy_construction(const allocator_type& __a) 1536 {return select_on_container_copy_construction( 1537 __has_select_on_container_copy_construction<const allocator_type>(), 1538 __a);} 1539 1540 template <class _Ptr> 1541 _LIBCPP_INLINE_VISIBILITY 1542 static 1543 void 1544 __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) 1545 { 1546 for (; __begin1 != __end1; ++__begin1, ++__begin2) 1547 construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1)); 1548 } 1549 1550 template <class _Tp> 1551 _LIBCPP_INLINE_VISIBILITY 1552 static 1553 typename enable_if 1554 < 1555 (is_same<allocator_type, allocator<_Tp> >::value 1556 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1557 is_trivially_move_constructible<_Tp>::value, 1558 void 1559 >::type 1560 __construct_forward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1561 { 1562 ptrdiff_t _Np = __end1 - __begin1; 1563 _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp)); 1564 __begin2 += _Np; 1565 } 1566 1567 template <class _Ptr> 1568 _LIBCPP_INLINE_VISIBILITY 1569 static 1570 void 1571 __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2) 1572 { 1573 while (__end1 != __begin1) 1574 { 1575 construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1)); 1576 --__end2; 1577 } 1578 } 1579 1580 template <class _Tp> 1581 _LIBCPP_INLINE_VISIBILITY 1582 static 1583 typename enable_if 1584 < 1585 (is_same<allocator_type, allocator<_Tp> >::value 1586 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1587 is_trivially_move_constructible<_Tp>::value, 1588 void 1589 >::type 1590 __construct_backward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __end2) 1591 { 1592 ptrdiff_t _Np = __end1 - __begin1; 1593 __end2 -= _Np; 1594 _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp)); 1595 } 1596 1597private: 1598 1599 _LIBCPP_INLINE_VISIBILITY 1600 static pointer allocate(allocator_type& __a, size_type __n, 1601 const_void_pointer __hint, true_type) 1602 {return __a.allocate(__n, __hint);} 1603 _LIBCPP_INLINE_VISIBILITY 1604 static pointer allocate(allocator_type& __a, size_type __n, 1605 const_void_pointer, false_type) 1606 {return __a.allocate(__n);} 1607 1608#ifndef _LIBCPP_HAS_NO_VARIADICS 1609 template <class _Tp, class... _Args> 1610 _LIBCPP_INLINE_VISIBILITY 1611 static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args) 1612 {__a.construct(__p, _VSTD::forward<_Args>(__args)...);} 1613 template <class _Tp, class... _Args> 1614 _LIBCPP_INLINE_VISIBILITY 1615 static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args) 1616 { 1617 ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...); 1618 } 1619#endif // _LIBCPP_HAS_NO_VARIADICS 1620 1621 template <class _Tp> 1622 _LIBCPP_INLINE_VISIBILITY 1623 static void __destroy(true_type, allocator_type& __a, _Tp* __p) 1624 {__a.destroy(__p);} 1625 template <class _Tp> 1626 _LIBCPP_INLINE_VISIBILITY 1627 static void __destroy(false_type, allocator_type&, _Tp* __p) 1628 { 1629 __p->~_Tp(); 1630 } 1631 1632 _LIBCPP_INLINE_VISIBILITY 1633 static size_type __max_size(true_type, const allocator_type& __a) 1634 {return __a.max_size();} 1635 _LIBCPP_INLINE_VISIBILITY 1636 static size_type __max_size(false_type, const allocator_type&) 1637 {return numeric_limits<size_type>::max();} 1638 1639 _LIBCPP_INLINE_VISIBILITY 1640 static allocator_type 1641 select_on_container_copy_construction(true_type, const allocator_type& __a) 1642 {return __a.select_on_container_copy_construction();} 1643 _LIBCPP_INLINE_VISIBILITY 1644 static allocator_type 1645 select_on_container_copy_construction(false_type, const allocator_type& __a) 1646 {return __a;} 1647}; 1648 1649// allocator 1650 1651template <class _Tp> 1652class _LIBCPP_TYPE_VIS allocator 1653{ 1654public: 1655 typedef size_t size_type; 1656 typedef ptrdiff_t difference_type; 1657 typedef _Tp* pointer; 1658 typedef const _Tp* const_pointer; 1659 typedef _Tp& reference; 1660 typedef const _Tp& const_reference; 1661 typedef _Tp value_type; 1662 1663 typedef true_type propagate_on_container_move_assignment; 1664 1665 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1666 1667 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1668 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1669 _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT 1670 {return _VSTD::addressof(__x);} 1671 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1672 {return _VSTD::addressof(__x);} 1673 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1674 {return static_cast<pointer>(::operator new(__n * sizeof(_Tp)));} 1675 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1676 {::operator delete((void*)__p);} 1677 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1678 {return size_type(~0) / sizeof(_Tp);} 1679#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1680 template <class _Up, class... _Args> 1681 _LIBCPP_INLINE_VISIBILITY 1682 void 1683 construct(_Up* __p, _Args&&... __args) 1684 { 1685 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1686 } 1687#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1688 _LIBCPP_INLINE_VISIBILITY 1689 void 1690 construct(pointer __p) 1691 { 1692 ::new((void*)__p) _Tp(); 1693 } 1694# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1695 1696 template <class _A0> 1697 _LIBCPP_INLINE_VISIBILITY 1698 void 1699 construct(pointer __p, _A0& __a0) 1700 { 1701 ::new((void*)__p) _Tp(__a0); 1702 } 1703 template <class _A0> 1704 _LIBCPP_INLINE_VISIBILITY 1705 void 1706 construct(pointer __p, const _A0& __a0) 1707 { 1708 ::new((void*)__p) _Tp(__a0); 1709 } 1710# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1711 template <class _A0, class _A1> 1712 _LIBCPP_INLINE_VISIBILITY 1713 void 1714 construct(pointer __p, _A0& __a0, _A1& __a1) 1715 { 1716 ::new((void*)__p) _Tp(__a0, __a1); 1717 } 1718 template <class _A0, class _A1> 1719 _LIBCPP_INLINE_VISIBILITY 1720 void 1721 construct(pointer __p, const _A0& __a0, _A1& __a1) 1722 { 1723 ::new((void*)__p) _Tp(__a0, __a1); 1724 } 1725 template <class _A0, class _A1> 1726 _LIBCPP_INLINE_VISIBILITY 1727 void 1728 construct(pointer __p, _A0& __a0, const _A1& __a1) 1729 { 1730 ::new((void*)__p) _Tp(__a0, __a1); 1731 } 1732 template <class _A0, class _A1> 1733 _LIBCPP_INLINE_VISIBILITY 1734 void 1735 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1736 { 1737 ::new((void*)__p) _Tp(__a0, __a1); 1738 } 1739#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1740 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1741}; 1742 1743template <class _Tp> 1744class _LIBCPP_TYPE_VIS allocator<const _Tp> 1745{ 1746public: 1747 typedef size_t size_type; 1748 typedef ptrdiff_t difference_type; 1749 typedef const _Tp* pointer; 1750 typedef const _Tp* const_pointer; 1751 typedef const _Tp& reference; 1752 typedef const _Tp& const_reference; 1753 typedef _Tp value_type; 1754 1755 typedef true_type propagate_on_container_move_assignment; 1756 1757 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1758 1759 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1760 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1761 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1762 {return _VSTD::addressof(__x);} 1763 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1764 {return static_cast<pointer>(::operator new(__n * sizeof(_Tp)));} 1765 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1766 {::operator delete((void*)__p);} 1767 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1768 {return size_type(~0) / sizeof(_Tp);} 1769#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1770 template <class _Up, class... _Args> 1771 _LIBCPP_INLINE_VISIBILITY 1772 void 1773 construct(_Up* __p, _Args&&... __args) 1774 { 1775 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1776 } 1777#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1778 _LIBCPP_INLINE_VISIBILITY 1779 void 1780 construct(pointer __p) 1781 { 1782 ::new((void*)__p) _Tp(); 1783 } 1784# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1785 1786 template <class _A0> 1787 _LIBCPP_INLINE_VISIBILITY 1788 void 1789 construct(pointer __p, _A0& __a0) 1790 { 1791 ::new((void*)__p) _Tp(__a0); 1792 } 1793 template <class _A0> 1794 _LIBCPP_INLINE_VISIBILITY 1795 void 1796 construct(pointer __p, const _A0& __a0) 1797 { 1798 ::new((void*)__p) _Tp(__a0); 1799 } 1800# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1801 template <class _A0, class _A1> 1802 _LIBCPP_INLINE_VISIBILITY 1803 void 1804 construct(pointer __p, _A0& __a0, _A1& __a1) 1805 { 1806 ::new((void*)__p) _Tp(__a0, __a1); 1807 } 1808 template <class _A0, class _A1> 1809 _LIBCPP_INLINE_VISIBILITY 1810 void 1811 construct(pointer __p, const _A0& __a0, _A1& __a1) 1812 { 1813 ::new((void*)__p) _Tp(__a0, __a1); 1814 } 1815 template <class _A0, class _A1> 1816 _LIBCPP_INLINE_VISIBILITY 1817 void 1818 construct(pointer __p, _A0& __a0, const _A1& __a1) 1819 { 1820 ::new((void*)__p) _Tp(__a0, __a1); 1821 } 1822 template <class _A0, class _A1> 1823 _LIBCPP_INLINE_VISIBILITY 1824 void 1825 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1826 { 1827 ::new((void*)__p) _Tp(__a0, __a1); 1828 } 1829#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1830 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1831}; 1832 1833template <class _Tp, class _Up> 1834inline _LIBCPP_INLINE_VISIBILITY 1835bool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;} 1836 1837template <class _Tp, class _Up> 1838inline _LIBCPP_INLINE_VISIBILITY 1839bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;} 1840 1841template <class _OutputIterator, class _Tp> 1842class _LIBCPP_TYPE_VIS raw_storage_iterator 1843 : public iterator<output_iterator_tag, 1844 _Tp, // purposefully not C++03 1845 ptrdiff_t, // purposefully not C++03 1846 _Tp*, // purposefully not C++03 1847 raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03 1848{ 1849private: 1850 _OutputIterator __x_; 1851public: 1852 _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} 1853 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;} 1854 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element) 1855 {::new(&*__x_) _Tp(__element); return *this;} 1856 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;} 1857 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int) 1858 {raw_storage_iterator __t(*this); ++__x_; return __t;} 1859}; 1860 1861template <class _Tp> 1862pair<_Tp*, ptrdiff_t> 1863get_temporary_buffer(ptrdiff_t __n) _NOEXCEPT 1864{ 1865 pair<_Tp*, ptrdiff_t> __r(0, 0); 1866 const ptrdiff_t __m = (~ptrdiff_t(0) ^ 1867 ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1))) 1868 / sizeof(_Tp); 1869 if (__n > __m) 1870 __n = __m; 1871 while (__n > 0) 1872 { 1873 __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow)); 1874 if (__r.first) 1875 { 1876 __r.second = __n; 1877 break; 1878 } 1879 __n /= 2; 1880 } 1881 return __r; 1882} 1883 1884template <class _Tp> 1885inline _LIBCPP_INLINE_VISIBILITY 1886void return_temporary_buffer(_Tp* __p) _NOEXCEPT {::operator delete(__p);} 1887 1888template <class _Tp> 1889struct auto_ptr_ref 1890{ 1891 _Tp* __ptr_; 1892}; 1893 1894template<class _Tp> 1895class _LIBCPP_TYPE_VIS auto_ptr 1896{ 1897private: 1898 _Tp* __ptr_; 1899public: 1900 typedef _Tp element_type; 1901 1902 _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {} 1903 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {} 1904 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw() 1905 : __ptr_(__p.release()) {} 1906 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw() 1907 {reset(__p.release()); return *this;} 1908 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw() 1909 {reset(__p.release()); return *this;} 1910 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw() 1911 {reset(__p.__ptr_); return *this;} 1912 _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;} 1913 1914 _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw() 1915 {return *__ptr_;} 1916 _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;} 1917 _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;} 1918 _LIBCPP_INLINE_VISIBILITY _Tp* release() throw() 1919 { 1920 _Tp* __t = __ptr_; 1921 __ptr_ = 0; 1922 return __t; 1923 } 1924 _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw() 1925 { 1926 if (__ptr_ != __p) 1927 delete __ptr_; 1928 __ptr_ = __p; 1929 } 1930 1931 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {} 1932 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw() 1933 {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;} 1934 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw() 1935 {return auto_ptr<_Up>(release());} 1936}; 1937 1938template <> 1939class _LIBCPP_TYPE_VIS auto_ptr<void> 1940{ 1941public: 1942 typedef void element_type; 1943}; 1944 1945template <class _T1, class _T2, bool = is_same<typename remove_cv<_T1>::type, 1946 typename remove_cv<_T2>::type>::value, 1947 bool = is_empty<_T1>::value 1948#if __has_feature(is_final) 1949 && !__is_final(_T1) 1950#endif 1951 , 1952 bool = is_empty<_T2>::value 1953#if __has_feature(is_final) 1954 && !__is_final(_T2) 1955#endif 1956 > 1957struct __libcpp_compressed_pair_switch; 1958 1959template <class _T1, class _T2, bool IsSame> 1960struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, false> {enum {value = 0};}; 1961 1962template <class _T1, class _T2, bool IsSame> 1963struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, true, false> {enum {value = 1};}; 1964 1965template <class _T1, class _T2, bool IsSame> 1966struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, true> {enum {value = 2};}; 1967 1968template <class _T1, class _T2> 1969struct __libcpp_compressed_pair_switch<_T1, _T2, false, true, true> {enum {value = 3};}; 1970 1971template <class _T1, class _T2> 1972struct __libcpp_compressed_pair_switch<_T1, _T2, true, true, true> {enum {value = 1};}; 1973 1974template <class _T1, class _T2, unsigned = __libcpp_compressed_pair_switch<_T1, _T2>::value> 1975class __libcpp_compressed_pair_imp; 1976 1977template <class _T1, class _T2> 1978class __libcpp_compressed_pair_imp<_T1, _T2, 0> 1979{ 1980private: 1981 _T1 __first_; 1982 _T2 __second_; 1983public: 1984 typedef _T1 _T1_param; 1985 typedef _T2 _T2_param; 1986 1987 typedef typename remove_reference<_T1>::type& _T1_reference; 1988 typedef typename remove_reference<_T2>::type& _T2_reference; 1989 1990 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 1991 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 1992 1993 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 1994 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 1995 : __first_(_VSTD::forward<_T1_param>(__t1)) {} 1996 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 1997 : __second_(_VSTD::forward<_T2_param>(__t2)) {} 1998 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 1999 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2000 2001#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2002 2003 _LIBCPP_INLINE_VISIBILITY 2004 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2005 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2006 is_nothrow_copy_constructible<_T2>::value) 2007 : __first_(__p.first()), 2008 __second_(__p.second()) {} 2009 2010 _LIBCPP_INLINE_VISIBILITY 2011 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2012 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2013 is_nothrow_copy_assignable<_T2>::value) 2014 { 2015 __first_ = __p.first(); 2016 __second_ = __p.second(); 2017 return *this; 2018 } 2019 2020#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2021 2022 _LIBCPP_INLINE_VISIBILITY 2023 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2024 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2025 is_nothrow_move_constructible<_T2>::value) 2026 : __first_(_VSTD::forward<_T1>(__p.first())), 2027 __second_(_VSTD::forward<_T2>(__p.second())) {} 2028 2029 _LIBCPP_INLINE_VISIBILITY 2030 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2031 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2032 is_nothrow_move_assignable<_T2>::value) 2033 { 2034 __first_ = _VSTD::forward<_T1>(__p.first()); 2035 __second_ = _VSTD::forward<_T2>(__p.second()); 2036 return *this; 2037 } 2038 2039#ifndef _LIBCPP_HAS_NO_VARIADICS 2040 2041 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2042 _LIBCPP_INLINE_VISIBILITY 2043 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2044 tuple<_Args1...> __first_args, 2045 tuple<_Args2...> __second_args, 2046 __tuple_indices<_I1...>, 2047 __tuple_indices<_I2...>) 2048 : __first_(_VSTD::forward<_Args1>(get<_I1>(__first_args))...), 2049 __second_(_VSTD::forward<_Args2>(get<_I2>(__second_args))...) 2050 {} 2051 2052#endif // _LIBCPP_HAS_NO_VARIADICS 2053 2054#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2055 2056#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2057 2058 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2059 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2060 2061 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2062 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2063 2064 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2065 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2066 __is_nothrow_swappable<_T1>::value) 2067 { 2068 using _VSTD::swap; 2069 swap(__first_, __x.__first_); 2070 swap(__second_, __x.__second_); 2071 } 2072}; 2073 2074template <class _T1, class _T2> 2075class __libcpp_compressed_pair_imp<_T1, _T2, 1> 2076 : private _T1 2077{ 2078private: 2079 _T2 __second_; 2080public: 2081 typedef _T1 _T1_param; 2082 typedef _T2 _T2_param; 2083 2084 typedef _T1& _T1_reference; 2085 typedef typename remove_reference<_T2>::type& _T2_reference; 2086 2087 typedef const _T1& _T1_const_reference; 2088 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 2089 2090 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2091 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2092 : _T1(_VSTD::forward<_T1_param>(__t1)) {} 2093 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2094 : __second_(_VSTD::forward<_T2_param>(__t2)) {} 2095 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2096 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2097 2098#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2099 2100 _LIBCPP_INLINE_VISIBILITY 2101 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2102 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2103 is_nothrow_copy_constructible<_T2>::value) 2104 : _T1(__p.first()), __second_(__p.second()) {} 2105 2106 _LIBCPP_INLINE_VISIBILITY 2107 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2108 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2109 is_nothrow_copy_assignable<_T2>::value) 2110 { 2111 _T1::operator=(__p.first()); 2112 __second_ = __p.second(); 2113 return *this; 2114 } 2115 2116#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2117 2118 _LIBCPP_INLINE_VISIBILITY 2119 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2120 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2121 is_nothrow_move_constructible<_T2>::value) 2122 : _T1(_VSTD::move(__p.first())), __second_(_VSTD::forward<_T2>(__p.second())) {} 2123 2124 _LIBCPP_INLINE_VISIBILITY 2125 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2126 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2127 is_nothrow_move_assignable<_T2>::value) 2128 { 2129 _T1::operator=(_VSTD::move(__p.first())); 2130 __second_ = _VSTD::forward<_T2>(__p.second()); 2131 return *this; 2132 } 2133 2134#ifndef _LIBCPP_HAS_NO_VARIADICS 2135 2136 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2137 _LIBCPP_INLINE_VISIBILITY 2138 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2139 tuple<_Args1...> __first_args, 2140 tuple<_Args2...> __second_args, 2141 __tuple_indices<_I1...>, 2142 __tuple_indices<_I2...>) 2143 : _T1(_VSTD::forward<_Args1>(get<_I1>(__first_args))...), 2144 __second_(_VSTD::forward<_Args2>(get<_I2>(__second_args))...) 2145 {} 2146 2147#endif // _LIBCPP_HAS_NO_VARIADICS 2148 2149#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2150 2151#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2152 2153 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2154 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2155 2156 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2157 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2158 2159 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2160 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2161 __is_nothrow_swappable<_T1>::value) 2162 { 2163 using _VSTD::swap; 2164 swap(__second_, __x.__second_); 2165 } 2166}; 2167 2168template <class _T1, class _T2> 2169class __libcpp_compressed_pair_imp<_T1, _T2, 2> 2170 : private _T2 2171{ 2172private: 2173 _T1 __first_; 2174public: 2175 typedef _T1 _T1_param; 2176 typedef _T2 _T2_param; 2177 2178 typedef typename remove_reference<_T1>::type& _T1_reference; 2179 typedef _T2& _T2_reference; 2180 2181 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 2182 typedef const _T2& _T2_const_reference; 2183 2184 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2185 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2186 : __first_(_VSTD::forward<_T1_param>(__t1)) {} 2187 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2188 : _T2(_VSTD::forward<_T2_param>(__t2)) {} 2189 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2190 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2191 is_nothrow_move_constructible<_T2>::value) 2192 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_(_VSTD::forward<_T1_param>(__t1)) {} 2193 2194#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2195 2196 _LIBCPP_INLINE_VISIBILITY 2197 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2198 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2199 is_nothrow_copy_constructible<_T2>::value) 2200 : _T2(__p.second()), __first_(__p.first()) {} 2201 2202 _LIBCPP_INLINE_VISIBILITY 2203 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2204 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2205 is_nothrow_copy_assignable<_T2>::value) 2206 { 2207 _T2::operator=(__p.second()); 2208 __first_ = __p.first(); 2209 return *this; 2210 } 2211 2212#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2213 2214 _LIBCPP_INLINE_VISIBILITY 2215 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2216 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2217 is_nothrow_move_constructible<_T2>::value) 2218 : _T2(_VSTD::forward<_T2>(__p.second())), __first_(_VSTD::move(__p.first())) {} 2219 2220 _LIBCPP_INLINE_VISIBILITY 2221 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2222 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2223 is_nothrow_move_assignable<_T2>::value) 2224 { 2225 _T2::operator=(_VSTD::forward<_T2>(__p.second())); 2226 __first_ = _VSTD::move(__p.first()); 2227 return *this; 2228 } 2229 2230#ifndef _LIBCPP_HAS_NO_VARIADICS 2231 2232 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2233 _LIBCPP_INLINE_VISIBILITY 2234 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2235 tuple<_Args1...> __first_args, 2236 tuple<_Args2...> __second_args, 2237 __tuple_indices<_I1...>, 2238 __tuple_indices<_I2...>) 2239 : _T2(_VSTD::forward<_Args2>(get<_I2>(__second_args))...), 2240 __first_(_VSTD::forward<_Args1>(get<_I1>(__first_args))...) 2241 2242 {} 2243 2244#endif // _LIBCPP_HAS_NO_VARIADICS 2245 2246#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2247 2248#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2249 2250 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2251 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2252 2253 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2254 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2255 2256 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2257 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2258 __is_nothrow_swappable<_T1>::value) 2259 { 2260 using _VSTD::swap; 2261 swap(__first_, __x.__first_); 2262 } 2263}; 2264 2265template <class _T1, class _T2> 2266class __libcpp_compressed_pair_imp<_T1, _T2, 3> 2267 : private _T1, 2268 private _T2 2269{ 2270public: 2271 typedef _T1 _T1_param; 2272 typedef _T2 _T2_param; 2273 2274 typedef _T1& _T1_reference; 2275 typedef _T2& _T2_reference; 2276 2277 typedef const _T1& _T1_const_reference; 2278 typedef const _T2& _T2_const_reference; 2279 2280 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2281 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2282 : _T1(_VSTD::forward<_T1_param>(__t1)) {} 2283 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2284 : _T2(_VSTD::forward<_T2_param>(__t2)) {} 2285 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2286 : _T1(_VSTD::forward<_T1_param>(__t1)), _T2(_VSTD::forward<_T2_param>(__t2)) {} 2287 2288#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2289 2290 _LIBCPP_INLINE_VISIBILITY 2291 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2292 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2293 is_nothrow_copy_constructible<_T2>::value) 2294 : _T1(__p.first()), _T2(__p.second()) {} 2295 2296 _LIBCPP_INLINE_VISIBILITY 2297 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2298 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2299 is_nothrow_copy_assignable<_T2>::value) 2300 { 2301 _T1::operator=(__p.first()); 2302 _T2::operator=(__p.second()); 2303 return *this; 2304 } 2305 2306#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2307 2308 _LIBCPP_INLINE_VISIBILITY 2309 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2310 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2311 is_nothrow_move_constructible<_T2>::value) 2312 : _T1(_VSTD::move(__p.first())), _T2(_VSTD::move(__p.second())) {} 2313 2314 _LIBCPP_INLINE_VISIBILITY 2315 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2316 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2317 is_nothrow_move_assignable<_T2>::value) 2318 { 2319 _T1::operator=(_VSTD::move(__p.first())); 2320 _T2::operator=(_VSTD::move(__p.second())); 2321 return *this; 2322 } 2323 2324#ifndef _LIBCPP_HAS_NO_VARIADICS 2325 2326 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2327 _LIBCPP_INLINE_VISIBILITY 2328 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2329 tuple<_Args1...> __first_args, 2330 tuple<_Args2...> __second_args, 2331 __tuple_indices<_I1...>, 2332 __tuple_indices<_I2...>) 2333 : _T1(_VSTD::forward<_Args1>(get<_I1>(__first_args))...), 2334 _T2(_VSTD::forward<_Args2>(get<_I2>(__second_args))...) 2335 {} 2336 2337#endif // _LIBCPP_HAS_NO_VARIADICS 2338 2339#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2340 2341#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2342 2343 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2344 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2345 2346 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2347 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2348 2349 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp&) 2350 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2351 __is_nothrow_swappable<_T1>::value) 2352 { 2353 } 2354}; 2355 2356template <class _T1, class _T2> 2357class __compressed_pair 2358 : private __libcpp_compressed_pair_imp<_T1, _T2> 2359{ 2360 typedef __libcpp_compressed_pair_imp<_T1, _T2> base; 2361public: 2362 typedef typename base::_T1_param _T1_param; 2363 typedef typename base::_T2_param _T2_param; 2364 2365 typedef typename base::_T1_reference _T1_reference; 2366 typedef typename base::_T2_reference _T2_reference; 2367 2368 typedef typename base::_T1_const_reference _T1_const_reference; 2369 typedef typename base::_T2_const_reference _T2_const_reference; 2370 2371 _LIBCPP_INLINE_VISIBILITY __compressed_pair() {} 2372 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T1_param __t1) 2373 : base(_VSTD::forward<_T1_param>(__t1)) {} 2374 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T2_param __t2) 2375 : base(_VSTD::forward<_T2_param>(__t2)) {} 2376 _LIBCPP_INLINE_VISIBILITY __compressed_pair(_T1_param __t1, _T2_param __t2) 2377 : base(_VSTD::forward<_T1_param>(__t1), _VSTD::forward<_T2_param>(__t2)) {} 2378 2379#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2380 2381 _LIBCPP_INLINE_VISIBILITY 2382 __compressed_pair(const __compressed_pair& __p) 2383 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2384 is_nothrow_copy_constructible<_T2>::value) 2385 : base(__p) {} 2386 2387 _LIBCPP_INLINE_VISIBILITY 2388 __compressed_pair& operator=(const __compressed_pair& __p) 2389 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2390 is_nothrow_copy_assignable<_T2>::value) 2391 { 2392 base::operator=(__p); 2393 return *this; 2394 } 2395 2396#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2397 _LIBCPP_INLINE_VISIBILITY 2398 __compressed_pair(__compressed_pair&& __p) 2399 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2400 is_nothrow_move_constructible<_T2>::value) 2401 : base(_VSTD::move(__p)) {} 2402 2403 _LIBCPP_INLINE_VISIBILITY 2404 __compressed_pair& operator=(__compressed_pair&& __p) 2405 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2406 is_nothrow_move_assignable<_T2>::value) 2407 { 2408 base::operator=(_VSTD::move(__p)); 2409 return *this; 2410 } 2411 2412#ifndef _LIBCPP_HAS_NO_VARIADICS 2413 2414 template <class... _Args1, class... _Args2> 2415 _LIBCPP_INLINE_VISIBILITY 2416 __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args, 2417 tuple<_Args2...> __second_args) 2418 : base(__pc, _VSTD::move(__first_args), _VSTD::move(__second_args), 2419 typename __make_tuple_indices<sizeof...(_Args1)>::type(), 2420 typename __make_tuple_indices<sizeof...(_Args2) >::type()) 2421 {} 2422 2423#endif // _LIBCPP_HAS_NO_VARIADICS 2424 2425#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2426 2427#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2428 2429 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return base::first();} 2430 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return base::first();} 2431 2432 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return base::second();} 2433 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return base::second();} 2434 2435 _LIBCPP_INLINE_VISIBILITY void swap(__compressed_pair& __x) 2436 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2437 __is_nothrow_swappable<_T1>::value) 2438 {base::swap(__x);} 2439}; 2440 2441template <class _T1, class _T2> 2442inline _LIBCPP_INLINE_VISIBILITY 2443void 2444swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y) 2445 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2446 __is_nothrow_swappable<_T1>::value) 2447 {__x.swap(__y);} 2448 2449// __same_or_less_cv_qualified 2450 2451template <class _Ptr1, class _Ptr2, 2452 bool = is_same<typename remove_cv<typename pointer_traits<_Ptr1>::element_type>::type, 2453 typename remove_cv<typename pointer_traits<_Ptr2>::element_type>::type 2454 >::value 2455 > 2456struct __same_or_less_cv_qualified_imp 2457 : is_convertible<_Ptr1, _Ptr2> {}; 2458 2459template <class _Ptr1, class _Ptr2> 2460struct __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2, false> 2461 : false_type {}; 2462 2463template <class _Ptr1, class _Ptr2, bool = is_scalar<_Ptr1>::value && 2464 !is_pointer<_Ptr1>::value> 2465struct __same_or_less_cv_qualified 2466 : __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2> {}; 2467 2468template <class _Ptr1, class _Ptr2> 2469struct __same_or_less_cv_qualified<_Ptr1, _Ptr2, true> 2470 : false_type {}; 2471 2472// default_delete 2473 2474template <class _Tp> 2475struct _LIBCPP_TYPE_VIS default_delete 2476{ 2477#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2478 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2479#else 2480 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2481#endif 2482 template <class _Up> 2483 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up>&, 2484 typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2485 _LIBCPP_INLINE_VISIBILITY void operator() (_Tp* __ptr) const _NOEXCEPT 2486 { 2487 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2488 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type"); 2489 delete __ptr; 2490 } 2491}; 2492 2493template <class _Tp> 2494struct _LIBCPP_TYPE_VIS default_delete<_Tp[]> 2495{ 2496public: 2497#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2498 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2499#else 2500 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2501#endif 2502 template <class _Up> 2503 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up[]>&, 2504 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2505 template <class _Up> 2506 _LIBCPP_INLINE_VISIBILITY 2507 void operator() (_Up* __ptr, 2508 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) const _NOEXCEPT 2509 { 2510 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2511 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type"); 2512 delete [] __ptr; 2513 } 2514}; 2515 2516template <class _Tp, class _Dp = default_delete<_Tp> > 2517class _LIBCPP_TYPE_VIS unique_ptr 2518{ 2519public: 2520 typedef _Tp element_type; 2521 typedef _Dp deleter_type; 2522 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2523private: 2524 __compressed_pair<pointer, deleter_type> __ptr_; 2525 2526#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2527 unique_ptr(unique_ptr&); 2528 template <class _Up, class _Ep> 2529 unique_ptr(unique_ptr<_Up, _Ep>&); 2530 unique_ptr& operator=(unique_ptr&); 2531 template <class _Up, class _Ep> 2532 unique_ptr& operator=(unique_ptr<_Up, _Ep>&); 2533#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2534 2535 struct __nat {int __for_bool_;}; 2536 2537 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2538 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2539public: 2540 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2541 : __ptr_(pointer()) 2542 { 2543 static_assert(!is_pointer<deleter_type>::value, 2544 "unique_ptr constructed with null function pointer deleter"); 2545 } 2546 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2547 : __ptr_(pointer()) 2548 { 2549 static_assert(!is_pointer<deleter_type>::value, 2550 "unique_ptr constructed with null function pointer deleter"); 2551 } 2552 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) _NOEXCEPT 2553 : __ptr_(_VSTD::move(__p)) 2554 { 2555 static_assert(!is_pointer<deleter_type>::value, 2556 "unique_ptr constructed with null function pointer deleter"); 2557 } 2558 2559#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2560 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename conditional< 2561 is_reference<deleter_type>::value, 2562 deleter_type, 2563 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2564 _NOEXCEPT 2565 : __ptr_(__p, __d) {} 2566 2567 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename remove_reference<deleter_type>::type&& __d) 2568 _NOEXCEPT 2569 : __ptr_(__p, _VSTD::move(__d)) 2570 { 2571 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2572 } 2573 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2574 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2575 template <class _Up, class _Ep> 2576 _LIBCPP_INLINE_VISIBILITY 2577 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2578 typename enable_if 2579 < 2580 !is_array<_Up>::value && 2581 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2582 is_convertible<_Ep, deleter_type>::value && 2583 ( 2584 !is_reference<deleter_type>::value || 2585 is_same<deleter_type, _Ep>::value 2586 ), 2587 __nat 2588 >::type = __nat()) _NOEXCEPT 2589 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {} 2590 2591 template <class _Up> 2592 _LIBCPP_INLINE_VISIBILITY unique_ptr(auto_ptr<_Up>&& __p, 2593 typename enable_if< 2594 is_convertible<_Up*, _Tp*>::value && 2595 is_same<_Dp, default_delete<_Tp> >::value, 2596 __nat 2597 >::type = __nat()) _NOEXCEPT 2598 : __ptr_(__p.release()) 2599 { 2600 } 2601 2602 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2603 { 2604 reset(__u.release()); 2605 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2606 return *this; 2607 } 2608 2609 template <class _Up, class _Ep> 2610 _LIBCPP_INLINE_VISIBILITY 2611 typename enable_if 2612 < 2613 !is_array<_Up>::value && 2614 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2615 is_assignable<deleter_type&, _Ep&&>::value, 2616 unique_ptr& 2617 >::type 2618 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2619 { 2620 reset(__u.release()); 2621 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2622 return *this; 2623 } 2624#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2625 2626 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2627 { 2628 return __rv<unique_ptr>(*this); 2629 } 2630 2631 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2632 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2633 2634 template <class _Up, class _Ep> 2635 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr<_Up, _Ep> __u) 2636 { 2637 reset(__u.release()); 2638 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2639 return *this; 2640 } 2641 2642 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2643 : __ptr_(_VSTD::move(__p), _VSTD::move(__d)) {} 2644 2645 template <class _Up> 2646 _LIBCPP_INLINE_VISIBILITY 2647 typename enable_if< 2648 is_convertible<_Up*, _Tp*>::value && 2649 is_same<_Dp, default_delete<_Tp> >::value, 2650 unique_ptr& 2651 >::type 2652 operator=(auto_ptr<_Up> __p) 2653 {reset(__p.release()); return *this;} 2654 2655#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2656 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2657 2658 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2659 { 2660 reset(); 2661 return *this; 2662 } 2663 2664 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator*() const 2665 {return *__ptr_.first();} 2666 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT {return __ptr_.first();} 2667 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2668 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2669 {return __ptr_.second();} 2670 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2671 {return __ptr_.second();} 2672 _LIBCPP_INLINE_VISIBILITY 2673 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2674 {return __ptr_.first() != nullptr;} 2675 2676 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2677 { 2678 pointer __t = __ptr_.first(); 2679 __ptr_.first() = pointer(); 2680 return __t; 2681 } 2682 2683 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) _NOEXCEPT 2684 { 2685 pointer __tmp = __ptr_.first(); 2686 __ptr_.first() = __p; 2687 if (__tmp) 2688 __ptr_.second()(__tmp); 2689 } 2690 2691 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) _NOEXCEPT 2692 {__ptr_.swap(__u.__ptr_);} 2693}; 2694 2695template <class _Tp, class _Dp> 2696class _LIBCPP_TYPE_VIS unique_ptr<_Tp[], _Dp> 2697{ 2698public: 2699 typedef _Tp element_type; 2700 typedef _Dp deleter_type; 2701 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2702private: 2703 __compressed_pair<pointer, deleter_type> __ptr_; 2704 2705#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2706 unique_ptr(unique_ptr&); 2707 template <class _Up> 2708 unique_ptr(unique_ptr<_Up>&); 2709 unique_ptr& operator=(unique_ptr&); 2710 template <class _Up> 2711 unique_ptr& operator=(unique_ptr<_Up>&); 2712#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2713 2714 struct __nat {int __for_bool_;}; 2715 2716 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2717 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2718public: 2719 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2720 : __ptr_(pointer()) 2721 { 2722 static_assert(!is_pointer<deleter_type>::value, 2723 "unique_ptr constructed with null function pointer deleter"); 2724 } 2725 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2726 : __ptr_(pointer()) 2727 { 2728 static_assert(!is_pointer<deleter_type>::value, 2729 "unique_ptr constructed with null function pointer deleter"); 2730 } 2731#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2732 template <class _Pp, 2733 class = typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value>::type 2734 > 2735 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(_Pp __p) _NOEXCEPT 2736 : __ptr_(__p) 2737 { 2738 static_assert(!is_pointer<deleter_type>::value, 2739 "unique_ptr constructed with null function pointer deleter"); 2740 } 2741 2742 template <class _Pp, 2743 class = typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value>::type 2744 > 2745 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, typename conditional< 2746 is_reference<deleter_type>::value, 2747 deleter_type, 2748 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2749 _NOEXCEPT 2750 : __ptr_(__p, __d) {} 2751 2752 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename conditional< 2753 is_reference<deleter_type>::value, 2754 deleter_type, 2755 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2756 _NOEXCEPT 2757 : __ptr_(pointer(), __d) {} 2758 2759 template <class _Pp, 2760 class = typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value>::type 2761 > 2762 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, typename remove_reference<deleter_type>::type&& __d) 2763 _NOEXCEPT 2764 : __ptr_(__p, _VSTD::move(__d)) 2765 { 2766 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2767 } 2768 2769 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename remove_reference<deleter_type>::type&& __d) 2770 _NOEXCEPT 2771 : __ptr_(pointer(), _VSTD::move(__d)) 2772 { 2773 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2774 } 2775 2776 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2777 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2778 2779 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2780 { 2781 reset(__u.release()); 2782 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2783 return *this; 2784 } 2785 2786 template <class _Up, class _Ep> 2787 _LIBCPP_INLINE_VISIBILITY 2788 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2789 typename enable_if 2790 < 2791 is_array<_Up>::value && 2792 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value 2793 && is_convertible<_Ep, deleter_type>::value && 2794 ( 2795 !is_reference<deleter_type>::value || 2796 is_same<deleter_type, _Ep>::value 2797 ), 2798 __nat 2799 >::type = __nat() 2800 ) _NOEXCEPT 2801 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2802 2803 2804 template <class _Up, class _Ep> 2805 _LIBCPP_INLINE_VISIBILITY 2806 typename enable_if 2807 < 2808 is_array<_Up>::value && 2809 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2810 is_assignable<deleter_type&, _Ep&&>::value, 2811 unique_ptr& 2812 >::type 2813 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2814 { 2815 reset(__u.release()); 2816 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2817 return *this; 2818 } 2819#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2820 2821 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) 2822 : __ptr_(__p) 2823 { 2824 static_assert(!is_pointer<deleter_type>::value, 2825 "unique_ptr constructed with null function pointer deleter"); 2826 } 2827 2828 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2829 : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {} 2830 2831 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, deleter_type __d) 2832 : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {} 2833 2834 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2835 { 2836 return __rv<unique_ptr>(*this); 2837 } 2838 2839 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2840 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2841 2842 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(__rv<unique_ptr> __u) 2843 { 2844 reset(__u->release()); 2845 __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter()); 2846 return *this; 2847 } 2848 2849#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2850 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2851 2852 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2853 { 2854 reset(); 2855 return *this; 2856 } 2857 2858 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator[](size_t __i) const 2859 {return __ptr_.first()[__i];} 2860 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2861 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2862 {return __ptr_.second();} 2863 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2864 {return __ptr_.second();} 2865 _LIBCPP_INLINE_VISIBILITY 2866 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2867 {return __ptr_.first() != nullptr;} 2868 2869 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2870 { 2871 pointer __t = __ptr_.first(); 2872 __ptr_.first() = pointer(); 2873 return __t; 2874 } 2875 2876#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2877 template <class _Pp, 2878 class = typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value>::type 2879 > 2880 _LIBCPP_INLINE_VISIBILITY void reset(_Pp __p) _NOEXCEPT 2881 { 2882 pointer __tmp = __ptr_.first(); 2883 __ptr_.first() = __p; 2884 if (__tmp) 2885 __ptr_.second()(__tmp); 2886 } 2887 _LIBCPP_INLINE_VISIBILITY void reset(nullptr_t) _NOEXCEPT 2888 { 2889 pointer __tmp = __ptr_.first(); 2890 __ptr_.first() = nullptr; 2891 if (__tmp) 2892 __ptr_.second()(__tmp); 2893 } 2894 _LIBCPP_INLINE_VISIBILITY void reset() _NOEXCEPT 2895 { 2896 pointer __tmp = __ptr_.first(); 2897 __ptr_.first() = nullptr; 2898 if (__tmp) 2899 __ptr_.second()(__tmp); 2900 } 2901#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2902 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) 2903 { 2904 pointer __tmp = __ptr_.first(); 2905 __ptr_.first() = __p; 2906 if (__tmp) 2907 __ptr_.second()(__tmp); 2908 } 2909#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2910 2911 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);} 2912private: 2913 2914#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2915 template <class _Up> 2916 explicit unique_ptr(_Up); 2917 template <class _Up> 2918 unique_ptr(_Up __u, 2919 typename conditional< 2920 is_reference<deleter_type>::value, 2921 deleter_type, 2922 typename add_lvalue_reference<const deleter_type>::type>::type, 2923 typename enable_if 2924 < 2925 is_convertible<_Up, pointer>::value, 2926 __nat 2927 >::type = __nat()); 2928#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2929}; 2930 2931template <class _Tp, class _Dp> 2932inline _LIBCPP_INLINE_VISIBILITY 2933void 2934swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} 2935 2936template <class _T1, class _D1, class _T2, class _D2> 2937inline _LIBCPP_INLINE_VISIBILITY 2938bool 2939operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} 2940 2941template <class _T1, class _D1, class _T2, class _D2> 2942inline _LIBCPP_INLINE_VISIBILITY 2943bool 2944operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} 2945 2946template <class _T1, class _D1, class _T2, class _D2> 2947inline _LIBCPP_INLINE_VISIBILITY 2948bool 2949operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) 2950{ 2951 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2952 typedef typename unique_ptr<_T2, _D2>::pointer _P2; 2953 typedef typename common_type<_P1, _P2>::type _V; 2954 return less<_V>()(__x.get(), __y.get()); 2955} 2956 2957template <class _T1, class _D1, class _T2, class _D2> 2958inline _LIBCPP_INLINE_VISIBILITY 2959bool 2960operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} 2961 2962template <class _T1, class _D1, class _T2, class _D2> 2963inline _LIBCPP_INLINE_VISIBILITY 2964bool 2965operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} 2966 2967template <class _T1, class _D1, class _T2, class _D2> 2968inline _LIBCPP_INLINE_VISIBILITY 2969bool 2970operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} 2971 2972template <class _T1, class _D1> 2973inline _LIBCPP_INLINE_VISIBILITY 2974bool 2975operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2976{ 2977 return !__x; 2978} 2979 2980template <class _T1, class _D1> 2981inline _LIBCPP_INLINE_VISIBILITY 2982bool 2983operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2984{ 2985 return !__x; 2986} 2987 2988template <class _T1, class _D1> 2989inline _LIBCPP_INLINE_VISIBILITY 2990bool 2991operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2992{ 2993 return static_cast<bool>(__x); 2994} 2995 2996template <class _T1, class _D1> 2997inline _LIBCPP_INLINE_VISIBILITY 2998bool 2999operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 3000{ 3001 return static_cast<bool>(__x); 3002} 3003 3004template <class _T1, class _D1> 3005inline _LIBCPP_INLINE_VISIBILITY 3006bool 3007operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3008{ 3009 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 3010 return less<_P1>()(__x.get(), nullptr); 3011} 3012 3013template <class _T1, class _D1> 3014inline _LIBCPP_INLINE_VISIBILITY 3015bool 3016operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3017{ 3018 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 3019 return less<_P1>()(nullptr, __x.get()); 3020} 3021 3022template <class _T1, class _D1> 3023inline _LIBCPP_INLINE_VISIBILITY 3024bool 3025operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3026{ 3027 return nullptr < __x; 3028} 3029 3030template <class _T1, class _D1> 3031inline _LIBCPP_INLINE_VISIBILITY 3032bool 3033operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3034{ 3035 return __x < nullptr; 3036} 3037 3038template <class _T1, class _D1> 3039inline _LIBCPP_INLINE_VISIBILITY 3040bool 3041operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3042{ 3043 return !(nullptr < __x); 3044} 3045 3046template <class _T1, class _D1> 3047inline _LIBCPP_INLINE_VISIBILITY 3048bool 3049operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3050{ 3051 return !(__x < nullptr); 3052} 3053 3054template <class _T1, class _D1> 3055inline _LIBCPP_INLINE_VISIBILITY 3056bool 3057operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 3058{ 3059 return !(__x < nullptr); 3060} 3061 3062template <class _T1, class _D1> 3063inline _LIBCPP_INLINE_VISIBILITY 3064bool 3065operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3066{ 3067 return !(nullptr < __x); 3068} 3069 3070#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3071 3072template <class _Tp, class _Dp> 3073inline _LIBCPP_INLINE_VISIBILITY 3074unique_ptr<_Tp, _Dp> 3075move(unique_ptr<_Tp, _Dp>& __t) 3076{ 3077 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t)); 3078} 3079 3080#endif 3081 3082template <class _Tp> struct hash; 3083 3084// We use murmur2 when size_t is 32 bits, and cityhash64 when size_t 3085// is 64 bits. This is because cityhash64 uses 64bit x 64bit 3086// multiplication, which can be very slow on 32-bit systems. 3087template <class _Size, size_t = sizeof(_Size)*__CHAR_BIT__> 3088struct __murmur2_or_cityhash; 3089 3090template <class _Size> 3091struct __murmur2_or_cityhash<_Size, 32> 3092{ 3093 _Size operator()(const void* __key, _Size __len); 3094}; 3095 3096// murmur2 3097template <class _Size> 3098_Size 3099__murmur2_or_cityhash<_Size, 32>::operator()(const void* __key, _Size __len) 3100{ 3101 const _Size __m = 0x5bd1e995; 3102 const _Size __r = 24; 3103 _Size __h = __len; 3104 const unsigned char* __data = static_cast<const unsigned char*>(__key); 3105 for (; __len >= 4; __data += 4, __len -= 4) 3106 { 3107 _Size __k = *(const _Size*)__data; 3108 __k *= __m; 3109 __k ^= __k >> __r; 3110 __k *= __m; 3111 __h *= __m; 3112 __h ^= __k; 3113 } 3114 switch (__len) 3115 { 3116 case 3: 3117 __h ^= __data[2] << 16; 3118 case 2: 3119 __h ^= __data[1] << 8; 3120 case 1: 3121 __h ^= __data[0]; 3122 __h *= __m; 3123 } 3124 __h ^= __h >> 13; 3125 __h *= __m; 3126 __h ^= __h >> 15; 3127 return __h; 3128} 3129 3130template <class _Size> 3131struct __murmur2_or_cityhash<_Size, 64> 3132{ 3133 _Size operator()(const void* __key, _Size __len); 3134 3135 private: 3136 // Some primes between 2^63 and 2^64. 3137 static const _Size __k0 = 0xc3a5c85c97cb3127ULL; 3138 static const _Size __k1 = 0xb492b66fbe98f273ULL; 3139 static const _Size __k2 = 0x9ae16a3b2f90404fULL; 3140 static const _Size __k3 = 0xc949d7c7509e6557ULL; 3141 3142 static _Size __rotate(_Size __val, int __shift) { 3143 return __shift == 0 ? __val : ((__val >> __shift) | (__val << (64 - __shift))); 3144 } 3145 3146 static _Size __rotate_by_at_least_1(_Size __val, int __shift) { 3147 return (__val >> __shift) | (__val << (64 - __shift)); 3148 } 3149 3150 static _Size __shift_mix(_Size __val) { 3151 return __val ^ (__val >> 47); 3152 } 3153 3154 static _Size __hash_len_16(_Size __u, _Size __v) { 3155 const _Size __mul = 0x9ddfea08eb382d69ULL; 3156 _Size __a = (__u ^ __v) * __mul; 3157 __a ^= (__a >> 47); 3158 _Size __b = (__v ^ __a) * __mul; 3159 __b ^= (__b >> 47); 3160 __b *= __mul; 3161 return __b; 3162 } 3163 3164 static _Size __hash_len_0_to_16(const char* __s, _Size __len) { 3165 if (__len > 8) { 3166 const _Size __a = *(const _Size*)__s; 3167 const _Size __b = *(const _Size*)(__s + __len - 8); 3168 return __hash_len_16(__a, __rotate_by_at_least_1(__b + __len, __len)) ^ __b; 3169 } 3170 if (__len >= 4) { 3171 const uint32_t __a = *(const uint32_t*)(__s); 3172 const uint32_t __b = *(const uint32_t*)(__s + __len - 4); 3173 return __hash_len_16(__len + (__a << 3), __b); 3174 } 3175 if (__len > 0) { 3176 const unsigned char __a = __s[0]; 3177 const unsigned char __b = __s[__len >> 1]; 3178 const unsigned char __c = __s[__len - 1]; 3179 const uint32_t __y = static_cast<uint32_t>(__a) + 3180 (static_cast<uint32_t>(__b) << 8); 3181 const uint32_t __z = __len + (static_cast<uint32_t>(__c) << 2); 3182 return __shift_mix(__y * __k2 ^ __z * __k3) * __k2; 3183 } 3184 return __k2; 3185 } 3186 3187 static _Size __hash_len_17_to_32(const char *__s, _Size __len) { 3188 const _Size __a = *(const _Size*)(__s) * __k1; 3189 const _Size __b = *(const _Size*)(__s + 8); 3190 const _Size __c = *(const _Size*)(__s + __len - 8) * __k2; 3191 const _Size __d = *(const _Size*)(__s + __len - 16) * __k0; 3192 return __hash_len_16(__rotate(__a - __b, 43) + __rotate(__c, 30) + __d, 3193 __a + __rotate(__b ^ __k3, 20) - __c + __len); 3194 } 3195 3196 // Return a 16-byte hash for 48 bytes. Quick and dirty. 3197 // Callers do best to use "random-looking" values for a and b. 3198 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3199 _Size __w, _Size __x, _Size __y, _Size __z, _Size __a, _Size __b) { 3200 __a += __w; 3201 __b = __rotate(__b + __a + __z, 21); 3202 const _Size __c = __a; 3203 __a += __x; 3204 __a += __y; 3205 __b += __rotate(__a, 44); 3206 return pair<_Size, _Size>(__a + __z, __b + __c); 3207 } 3208 3209 // Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty. 3210 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3211 const char* __s, _Size __a, _Size __b) { 3212 return __weak_hash_len_32_with_seeds(*(const _Size*)(__s), 3213 *(const _Size*)(__s + 8), 3214 *(const _Size*)(__s + 16), 3215 *(const _Size*)(__s + 24), 3216 __a, 3217 __b); 3218 } 3219 3220 // Return an 8-byte hash for 33 to 64 bytes. 3221 static _Size __hash_len_33_to_64(const char *__s, size_t __len) { 3222 _Size __z = *(const _Size*)(__s + 24); 3223 _Size __a = *(const _Size*)(__s) + 3224 (__len + *(const _Size*)(__s + __len - 16)) * __k0; 3225 _Size __b = __rotate(__a + __z, 52); 3226 _Size __c = __rotate(__a, 37); 3227 __a += *(const _Size*)(__s + 8); 3228 __c += __rotate(__a, 7); 3229 __a += *(const _Size*)(__s + 16); 3230 _Size __vf = __a + __z; 3231 _Size __vs = __b + __rotate(__a, 31) + __c; 3232 __a = *(const _Size*)(__s + 16) + *(const _Size*)(__s + __len - 32); 3233 __z += *(const _Size*)(__s + __len - 8); 3234 __b = __rotate(__a + __z, 52); 3235 __c = __rotate(__a, 37); 3236 __a += *(const _Size*)(__s + __len - 24); 3237 __c += __rotate(__a, 7); 3238 __a += *(const _Size*)(__s + __len - 16); 3239 _Size __wf = __a + __z; 3240 _Size __ws = __b + __rotate(__a, 31) + __c; 3241 _Size __r = __shift_mix((__vf + __ws) * __k2 + (__wf + __vs) * __k0); 3242 return __shift_mix(__r * __k0 + __vs) * __k2; 3243 } 3244}; 3245 3246// cityhash64 3247template <class _Size> 3248_Size 3249__murmur2_or_cityhash<_Size, 64>::operator()(const void* __key, _Size __len) 3250{ 3251 const char* __s = static_cast<const char*>(__key); 3252 if (__len <= 32) { 3253 if (__len <= 16) { 3254 return __hash_len_0_to_16(__s, __len); 3255 } else { 3256 return __hash_len_17_to_32(__s, __len); 3257 } 3258 } else if (__len <= 64) { 3259 return __hash_len_33_to_64(__s, __len); 3260 } 3261 3262 // For strings over 64 bytes we hash the end first, and then as we 3263 // loop we keep 56 bytes of state: v, w, x, y, and z. 3264 _Size __x = *(const _Size*)(__s + __len - 40); 3265 _Size __y = *(const _Size*)(__s + __len - 16) + 3266 *(const _Size*)(__s + __len - 56); 3267 _Size __z = __hash_len_16(*(const _Size*)(__s + __len - 48) + __len, 3268 *(const _Size*)(__s + __len - 24)); 3269 pair<_Size, _Size> __v = __weak_hash_len_32_with_seeds(__s + __len - 64, __len, __z); 3270 pair<_Size, _Size> __w = __weak_hash_len_32_with_seeds(__s + __len - 32, __y + __k1, __x); 3271 __x = __x * __k1 + *(const _Size*)(__s); 3272 3273 // Decrease len to the nearest multiple of 64, and operate on 64-byte chunks. 3274 __len = (__len - 1) & ~static_cast<_Size>(63); 3275 do { 3276 __x = __rotate(__x + __y + __v.first + *(const _Size*)(__s + 8), 37) * __k1; 3277 __y = __rotate(__y + __v.second + *(const _Size*)(__s + 48), 42) * __k1; 3278 __x ^= __w.second; 3279 __y += __v.first + *(const _Size*)(__s + 40); 3280 __z = __rotate(__z + __w.first, 33) * __k1; 3281 __v = __weak_hash_len_32_with_seeds(__s, __v.second * __k1, __x + __w.first); 3282 __w = __weak_hash_len_32_with_seeds(__s + 32, __z + __w.second, 3283 __y + *(const _Size*)(__s + 16)); 3284 std::swap(__z, __x); 3285 __s += 64; 3286 __len -= 64; 3287 } while (__len != 0); 3288 return __hash_len_16( 3289 __hash_len_16(__v.first, __w.first) + __shift_mix(__y) * __k1 + __z, 3290 __hash_len_16(__v.second, __w.second) + __x); 3291} 3292 3293template <class _Tp, size_t = sizeof(_Tp) / sizeof(size_t)> 3294struct __scalar_hash; 3295 3296template <class _Tp> 3297struct __scalar_hash<_Tp, 0> 3298 : public unary_function<_Tp, size_t> 3299{ 3300 _LIBCPP_INLINE_VISIBILITY 3301 size_t operator()(_Tp __v) const _NOEXCEPT 3302 { 3303 union 3304 { 3305 _Tp __t; 3306 size_t __a; 3307 } __u; 3308 __u.__a = 0; 3309 __u.__t = __v; 3310 return __u.__a; 3311 } 3312}; 3313 3314template <class _Tp> 3315struct __scalar_hash<_Tp, 1> 3316 : public unary_function<_Tp, size_t> 3317{ 3318 _LIBCPP_INLINE_VISIBILITY 3319 size_t operator()(_Tp __v) const _NOEXCEPT 3320 { 3321 union 3322 { 3323 _Tp __t; 3324 size_t __a; 3325 } __u; 3326 __u.__t = __v; 3327 return __u.__a; 3328 } 3329}; 3330 3331template <class _Tp> 3332struct __scalar_hash<_Tp, 2> 3333 : public unary_function<_Tp, size_t> 3334{ 3335 _LIBCPP_INLINE_VISIBILITY 3336 size_t operator()(_Tp __v) const _NOEXCEPT 3337 { 3338 union 3339 { 3340 _Tp __t; 3341 struct 3342 { 3343 size_t __a; 3344 size_t __b; 3345 }; 3346 } __u; 3347 __u.__t = __v; 3348 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3349 } 3350}; 3351 3352template <class _Tp> 3353struct __scalar_hash<_Tp, 3> 3354 : public unary_function<_Tp, size_t> 3355{ 3356 _LIBCPP_INLINE_VISIBILITY 3357 size_t operator()(_Tp __v) const _NOEXCEPT 3358 { 3359 union 3360 { 3361 _Tp __t; 3362 struct 3363 { 3364 size_t __a; 3365 size_t __b; 3366 size_t __c; 3367 }; 3368 } __u; 3369 __u.__t = __v; 3370 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3371 } 3372}; 3373 3374template <class _Tp> 3375struct __scalar_hash<_Tp, 4> 3376 : public unary_function<_Tp, size_t> 3377{ 3378 _LIBCPP_INLINE_VISIBILITY 3379 size_t operator()(_Tp __v) const _NOEXCEPT 3380 { 3381 union 3382 { 3383 _Tp __t; 3384 struct 3385 { 3386 size_t __a; 3387 size_t __b; 3388 size_t __c; 3389 size_t __d; 3390 }; 3391 } __u; 3392 __u.__t = __v; 3393 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3394 } 3395}; 3396 3397template<class _Tp> 3398struct _LIBCPP_TYPE_VIS hash<_Tp*> 3399 : public unary_function<_Tp*, size_t> 3400{ 3401 _LIBCPP_INLINE_VISIBILITY 3402 size_t operator()(_Tp* __v) const _NOEXCEPT 3403 { 3404 union 3405 { 3406 _Tp* __t; 3407 size_t __a; 3408 } __u; 3409 __u.__t = __v; 3410 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3411 } 3412}; 3413 3414template <class _Tp, class _Dp> 3415struct _LIBCPP_TYPE_VIS hash<unique_ptr<_Tp, _Dp> > 3416{ 3417 typedef unique_ptr<_Tp, _Dp> argument_type; 3418 typedef size_t result_type; 3419 _LIBCPP_INLINE_VISIBILITY 3420 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 3421 { 3422 typedef typename argument_type::pointer pointer; 3423 return hash<pointer>()(__ptr.get()); 3424 } 3425}; 3426 3427struct __destruct_n 3428{ 3429private: 3430 size_t size; 3431 3432 template <class _Tp> 3433 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT 3434 {for (size_t __i = 0; __i < size; ++__i, ++__p) __p->~_Tp();} 3435 3436 template <class _Tp> 3437 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT 3438 {} 3439 3440 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT 3441 {++size;} 3442 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT 3443 {} 3444 3445 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT 3446 {size = __s;} 3447 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT 3448 {} 3449public: 3450 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT 3451 : size(__s) {} 3452 3453 template <class _Tp> 3454 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT 3455 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3456 3457 template <class _Tp> 3458 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT 3459 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3460 3461 template <class _Tp> 3462 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT 3463 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3464}; 3465 3466template <class _Alloc> 3467class __allocator_destructor 3468{ 3469 typedef allocator_traits<_Alloc> __alloc_traits; 3470public: 3471 typedef typename __alloc_traits::pointer pointer; 3472 typedef typename __alloc_traits::size_type size_type; 3473private: 3474 _Alloc& __alloc_; 3475 size_type __s_; 3476public: 3477 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) 3478 _NOEXCEPT 3479 : __alloc_(__a), __s_(__s) {} 3480 _LIBCPP_INLINE_VISIBILITY 3481 void operator()(pointer __p) _NOEXCEPT 3482 {__alloc_traits::deallocate(__alloc_, __p, __s_);} 3483}; 3484 3485template <class _InputIterator, class _ForwardIterator> 3486_ForwardIterator 3487uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) 3488{ 3489 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3490#ifndef _LIBCPP_NO_EXCEPTIONS 3491 _ForwardIterator __s = __r; 3492 try 3493 { 3494#endif 3495 for (; __f != __l; ++__f, ++__r) 3496 ::new(&*__r) value_type(*__f); 3497#ifndef _LIBCPP_NO_EXCEPTIONS 3498 } 3499 catch (...) 3500 { 3501 for (; __s != __r; ++__s) 3502 __s->~value_type(); 3503 throw; 3504 } 3505#endif 3506 return __r; 3507} 3508 3509template <class _InputIterator, class _Size, class _ForwardIterator> 3510_ForwardIterator 3511uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) 3512{ 3513 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3514#ifndef _LIBCPP_NO_EXCEPTIONS 3515 _ForwardIterator __s = __r; 3516 try 3517 { 3518#endif 3519 for (; __n > 0; ++__f, ++__r, --__n) 3520 ::new(&*__r) value_type(*__f); 3521#ifndef _LIBCPP_NO_EXCEPTIONS 3522 } 3523 catch (...) 3524 { 3525 for (; __s != __r; ++__s) 3526 __s->~value_type(); 3527 throw; 3528 } 3529#endif 3530 return __r; 3531} 3532 3533template <class _ForwardIterator, class _Tp> 3534void 3535uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) 3536{ 3537 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3538#ifndef _LIBCPP_NO_EXCEPTIONS 3539 _ForwardIterator __s = __f; 3540 try 3541 { 3542#endif 3543 for (; __f != __l; ++__f) 3544 ::new(&*__f) value_type(__x); 3545#ifndef _LIBCPP_NO_EXCEPTIONS 3546 } 3547 catch (...) 3548 { 3549 for (; __s != __f; ++__s) 3550 __s->~value_type(); 3551 throw; 3552 } 3553#endif 3554} 3555 3556template <class _ForwardIterator, class _Size, class _Tp> 3557_ForwardIterator 3558uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) 3559{ 3560 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3561#ifndef _LIBCPP_NO_EXCEPTIONS 3562 _ForwardIterator __s = __f; 3563 try 3564 { 3565#endif 3566 for (; __n > 0; ++__f, --__n) 3567 ::new(&*__f) value_type(__x); 3568#ifndef _LIBCPP_NO_EXCEPTIONS 3569 } 3570 catch (...) 3571 { 3572 for (; __s != __f; ++__s) 3573 __s->~value_type(); 3574 throw; 3575 } 3576#endif 3577 return __f; 3578} 3579 3580class _LIBCPP_EXCEPTION_ABI bad_weak_ptr 3581 : public std::exception 3582{ 3583public: 3584 virtual ~bad_weak_ptr() _NOEXCEPT; 3585 virtual const char* what() const _NOEXCEPT; 3586}; 3587 3588template<class _Tp> class _LIBCPP_TYPE_VIS weak_ptr; 3589 3590class __shared_count 3591{ 3592 __shared_count(const __shared_count&); 3593 __shared_count& operator=(const __shared_count&); 3594 3595protected: 3596 long __shared_owners_; 3597 virtual ~__shared_count(); 3598private: 3599 virtual void __on_zero_shared() _NOEXCEPT = 0; 3600 3601public: 3602 _LIBCPP_INLINE_VISIBILITY 3603 explicit __shared_count(long __refs = 0) _NOEXCEPT 3604 : __shared_owners_(__refs) {} 3605 3606 void __add_shared() _NOEXCEPT; 3607 bool __release_shared() _NOEXCEPT; 3608 _LIBCPP_INLINE_VISIBILITY 3609 long use_count() const _NOEXCEPT {return __shared_owners_ + 1;} 3610}; 3611 3612class __shared_weak_count 3613 : private __shared_count 3614{ 3615 long __shared_weak_owners_; 3616 3617public: 3618 _LIBCPP_INLINE_VISIBILITY 3619 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT 3620 : __shared_count(__refs), 3621 __shared_weak_owners_(__refs) {} 3622protected: 3623 virtual ~__shared_weak_count(); 3624 3625public: 3626 void __add_shared() _NOEXCEPT; 3627 void __add_weak() _NOEXCEPT; 3628 void __release_shared() _NOEXCEPT; 3629 void __release_weak() _NOEXCEPT; 3630 _LIBCPP_INLINE_VISIBILITY 3631 long use_count() const _NOEXCEPT {return __shared_count::use_count();} 3632 __shared_weak_count* lock() _NOEXCEPT; 3633 3634 // Define the function out only if we build static libc++ without RTTI. 3635 // Otherwise we may break clients who need to compile their projects with 3636 // -fno-rtti and yet link against a libc++.dylib compiled 3637 // without -fno-rtti. 3638#if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC) 3639 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3640#endif 3641private: 3642 virtual void __on_zero_shared_weak() _NOEXCEPT = 0; 3643}; 3644 3645template <class _Tp, class _Dp, class _Alloc> 3646class __shared_ptr_pointer 3647 : public __shared_weak_count 3648{ 3649 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; 3650public: 3651 _LIBCPP_INLINE_VISIBILITY 3652 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) 3653 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {} 3654 3655#ifndef _LIBCPP_NO_RTTI 3656 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3657#endif 3658 3659private: 3660 virtual void __on_zero_shared() _NOEXCEPT; 3661 virtual void __on_zero_shared_weak() _NOEXCEPT; 3662}; 3663 3664#ifndef _LIBCPP_NO_RTTI 3665 3666template <class _Tp, class _Dp, class _Alloc> 3667const void* 3668__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT 3669{ 3670 return __t == typeid(_Dp) ? &__data_.first().second() : 0; 3671} 3672 3673#endif // _LIBCPP_NO_RTTI 3674 3675template <class _Tp, class _Dp, class _Alloc> 3676void 3677__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT 3678{ 3679 __data_.first().second()(__data_.first().first()); 3680 __data_.first().second().~_Dp(); 3681} 3682 3683template <class _Tp, class _Dp, class _Alloc> 3684void 3685__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3686{ 3687 typename _Alloc::template rebind<__shared_ptr_pointer>::other __a(__data_.second()); 3688 __data_.second().~_Alloc(); 3689 __a.deallocate(this, 1); 3690} 3691 3692template <class _Tp, class _Alloc> 3693class __shared_ptr_emplace 3694 : public __shared_weak_count 3695{ 3696 __compressed_pair<_Alloc, _Tp> __data_; 3697public: 3698#ifndef _LIBCPP_HAS_NO_VARIADICS 3699 3700 _LIBCPP_INLINE_VISIBILITY 3701 __shared_ptr_emplace(_Alloc __a) 3702 : __data_(_VSTD::move(__a)) {} 3703 3704 template <class ..._Args> 3705 _LIBCPP_INLINE_VISIBILITY 3706 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) 3707 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a), 3708 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {} 3709 3710#else // _LIBCPP_HAS_NO_VARIADICS 3711 3712 _LIBCPP_INLINE_VISIBILITY 3713 __shared_ptr_emplace(_Alloc __a) 3714 : __data_(__a) {} 3715 3716 template <class _A0> 3717 _LIBCPP_INLINE_VISIBILITY 3718 __shared_ptr_emplace(_Alloc __a, _A0& __a0) 3719 : __data_(__a, _Tp(__a0)) {} 3720 3721 template <class _A0, class _A1> 3722 _LIBCPP_INLINE_VISIBILITY 3723 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) 3724 : __data_(__a, _Tp(__a0, __a1)) {} 3725 3726 template <class _A0, class _A1, class _A2> 3727 _LIBCPP_INLINE_VISIBILITY 3728 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) 3729 : __data_(__a, _Tp(__a0, __a1, __a2)) {} 3730 3731#endif // _LIBCPP_HAS_NO_VARIADICS 3732 3733private: 3734 virtual void __on_zero_shared() _NOEXCEPT; 3735 virtual void __on_zero_shared_weak() _NOEXCEPT; 3736public: 3737 _LIBCPP_INLINE_VISIBILITY 3738 _Tp* get() _NOEXCEPT {return &__data_.second();} 3739}; 3740 3741template <class _Tp, class _Alloc> 3742void 3743__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT 3744{ 3745 __data_.second().~_Tp(); 3746} 3747 3748template <class _Tp, class _Alloc> 3749void 3750__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3751{ 3752 typename _Alloc::template rebind<__shared_ptr_emplace>::other __a(__data_.first()); 3753 __data_.first().~_Alloc(); 3754 __a.deallocate(this, 1); 3755} 3756 3757template<class _Tp> class _LIBCPP_TYPE_VIS enable_shared_from_this; 3758 3759template<class _Tp> 3760class _LIBCPP_TYPE_VIS shared_ptr 3761{ 3762public: 3763 typedef _Tp element_type; 3764private: 3765 element_type* __ptr_; 3766 __shared_weak_count* __cntrl_; 3767 3768 struct __nat {int __for_bool_;}; 3769public: 3770 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT; 3771 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT; 3772 template<class _Yp, 3773 class = typename enable_if 3774 < 3775 is_convertible<_Yp*, element_type*>::value 3776 >::type 3777 > 3778 explicit shared_ptr(_Yp* __p); 3779 template<class _Yp, class _Dp, 3780 class = typename enable_if 3781 < 3782 is_convertible<_Yp*, element_type*>::value 3783 >::type 3784 > 3785 shared_ptr(_Yp* __p, _Dp __d); 3786 template<class _Yp, class _Dp, class _Alloc, 3787 class = typename enable_if 3788 < 3789 is_convertible<_Yp*, element_type*>::value 3790 >::type 3791 > 3792 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a); 3793 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); 3794 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); 3795 template<class _Yp> shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT; 3796 shared_ptr(const shared_ptr& __r) _NOEXCEPT; 3797 template<class _Yp> 3798 shared_ptr(const shared_ptr<_Yp>& __r, 3799 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3800 _NOEXCEPT; 3801#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3802 shared_ptr(shared_ptr&& __r) _NOEXCEPT; 3803 template<class _Yp> shared_ptr(shared_ptr<_Yp>&& __r, 3804 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3805 _NOEXCEPT; 3806#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3807 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, 3808 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type= __nat()); 3809#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3810 template<class _Yp, 3811 class = typename enable_if 3812 < 3813 is_convertible<_Yp*, element_type*>::value 3814 >::type 3815 > 3816 shared_ptr(auto_ptr<_Yp>&& __r); 3817#else 3818 template<class _Yp, 3819 class = typename enable_if 3820 < 3821 is_convertible<_Yp*, element_type*>::value 3822 >::type 3823 > 3824 shared_ptr(auto_ptr<_Yp> __r); 3825#endif 3826#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3827 template <class _Yp, class _Dp, 3828 class = typename enable_if 3829 < 3830 !is_array<_Yp>::value && 3831 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value 3832 >::type 3833 > 3834 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3835 typename enable_if<!is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); 3836 template <class _Yp, class _Dp, 3837 class = typename enable_if 3838 < 3839 !is_array<_Yp>::value && 3840 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value 3841 >::type 3842 > 3843 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3844 typename enable_if<is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); 3845#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3846 template <class _Yp, class _Dp, 3847 class = typename enable_if 3848 < 3849 !is_array<_Yp>::value && 3850 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value 3851 >::type 3852 > shared_ptr(unique_ptr<_Yp, _Dp>, 3853 typename enable_if<!is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); 3854 template <class _Yp, class _Dp, 3855 class = typename enable_if 3856 < 3857 !is_array<_Yp>::value && 3858 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value 3859 >::type 3860 > 3861 shared_ptr(unique_ptr<_Yp, _Dp>, 3862 typename enable_if<is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); 3863#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3864 3865 ~shared_ptr(); 3866 3867 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT; 3868 template<class _Yp> 3869 typename enable_if 3870 < 3871 is_convertible<_Yp*, element_type*>::value, 3872 shared_ptr& 3873 >::type 3874 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT; 3875#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3876 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT; 3877 template<class _Yp> 3878 typename enable_if 3879 < 3880 is_convertible<_Yp*, element_type*>::value, 3881 shared_ptr<_Tp>& 3882 >::type 3883 operator=(shared_ptr<_Yp>&& __r); 3884 template<class _Yp> 3885 typename enable_if 3886 < 3887 !is_array<_Yp>::value && 3888 is_convertible<_Yp*, element_type*>::value, 3889 shared_ptr& 3890 >::type 3891 operator=(auto_ptr<_Yp>&& __r); 3892#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3893 template<class _Yp> 3894 typename enable_if 3895 < 3896 !is_array<_Yp>::value && 3897 is_convertible<_Yp*, element_type*>::value, 3898 shared_ptr& 3899 >::type 3900 operator=(auto_ptr<_Yp> __r); 3901#endif 3902 template <class _Yp, class _Dp> 3903 typename enable_if 3904 < 3905 !is_array<_Yp>::value && 3906 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3907 shared_ptr& 3908 >::type 3909#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3910 operator=(unique_ptr<_Yp, _Dp>&& __r); 3911#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3912 operator=(unique_ptr<_Yp, _Dp> __r); 3913#endif 3914 3915 void swap(shared_ptr& __r) _NOEXCEPT; 3916 void reset() _NOEXCEPT; 3917 template<class _Yp> 3918 typename enable_if 3919 < 3920 is_convertible<_Yp*, element_type*>::value, 3921 void 3922 >::type 3923 reset(_Yp* __p); 3924 template<class _Yp, class _Dp> 3925 typename enable_if 3926 < 3927 is_convertible<_Yp*, element_type*>::value, 3928 void 3929 >::type 3930 reset(_Yp* __p, _Dp __d); 3931 template<class _Yp, class _Dp, class _Alloc> 3932 typename enable_if 3933 < 3934 is_convertible<_Yp*, element_type*>::value, 3935 void 3936 >::type 3937 reset(_Yp* __p, _Dp __d, _Alloc __a); 3938 3939 _LIBCPP_INLINE_VISIBILITY 3940 element_type* get() const _NOEXCEPT {return __ptr_;} 3941 _LIBCPP_INLINE_VISIBILITY 3942 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT 3943 {return *__ptr_;} 3944 _LIBCPP_INLINE_VISIBILITY 3945 element_type* operator->() const _NOEXCEPT {return __ptr_;} 3946 _LIBCPP_INLINE_VISIBILITY 3947 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;} 3948 _LIBCPP_INLINE_VISIBILITY 3949 bool unique() const _NOEXCEPT {return use_count() == 1;} 3950 _LIBCPP_INLINE_VISIBILITY 3951 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;} 3952 template <class _Up> 3953 _LIBCPP_INLINE_VISIBILITY 3954 bool owner_before(shared_ptr<_Up> const& __p) const 3955 {return __cntrl_ < __p.__cntrl_;} 3956 template <class _Up> 3957 _LIBCPP_INLINE_VISIBILITY 3958 bool owner_before(weak_ptr<_Up> const& __p) const 3959 {return __cntrl_ < __p.__cntrl_;} 3960 _LIBCPP_INLINE_VISIBILITY 3961 bool 3962 __owner_equivalent(const shared_ptr& __p) const 3963 {return __cntrl_ == __p.__cntrl_;} 3964 3965#ifndef _LIBCPP_NO_RTTI 3966 template <class _Dp> 3967 _LIBCPP_INLINE_VISIBILITY 3968 _Dp* __get_deleter() const _NOEXCEPT 3969 {return (_Dp*)(__cntrl_ ? __cntrl_->__get_deleter(typeid(_Dp)) : 0);} 3970#endif // _LIBCPP_NO_RTTI 3971 3972#ifndef _LIBCPP_HAS_NO_VARIADICS 3973 3974 template<class ..._Args> 3975 static 3976 shared_ptr<_Tp> 3977 make_shared(_Args&& ...__args); 3978 3979 template<class _Alloc, class ..._Args> 3980 static 3981 shared_ptr<_Tp> 3982 allocate_shared(const _Alloc& __a, _Args&& ...__args); 3983 3984#else // _LIBCPP_HAS_NO_VARIADICS 3985 3986 static shared_ptr<_Tp> make_shared(); 3987 3988 template<class _A0> 3989 static shared_ptr<_Tp> make_shared(_A0&); 3990 3991 template<class _A0, class _A1> 3992 static shared_ptr<_Tp> make_shared(_A0&, _A1&); 3993 3994 template<class _A0, class _A1, class _A2> 3995 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); 3996 3997 template<class _Alloc> 3998 static shared_ptr<_Tp> 3999 allocate_shared(const _Alloc& __a); 4000 4001 template<class _Alloc, class _A0> 4002 static shared_ptr<_Tp> 4003 allocate_shared(const _Alloc& __a, _A0& __a0); 4004 4005 template<class _Alloc, class _A0, class _A1> 4006 static shared_ptr<_Tp> 4007 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); 4008 4009 template<class _Alloc, class _A0, class _A1, class _A2> 4010 static shared_ptr<_Tp> 4011 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); 4012 4013#endif // _LIBCPP_HAS_NO_VARIADICS 4014 4015private: 4016 4017 template <class _Yp> 4018 _LIBCPP_INLINE_VISIBILITY 4019 void 4020 __enable_weak_this(const enable_shared_from_this<_Yp>* __e) _NOEXCEPT 4021 { 4022 if (__e) 4023 __e->__weak_this_ = *this; 4024 } 4025 4026 _LIBCPP_INLINE_VISIBILITY 4027 void __enable_weak_this(const void*) _NOEXCEPT {} 4028 4029 template <class _Up> friend class _LIBCPP_TYPE_VIS shared_ptr; 4030 template <class _Up> friend class _LIBCPP_TYPE_VIS weak_ptr; 4031}; 4032 4033template<class _Tp> 4034inline _LIBCPP_INLINE_VISIBILITY 4035_LIBCPP_CONSTEXPR 4036shared_ptr<_Tp>::shared_ptr() _NOEXCEPT 4037 : __ptr_(0), 4038 __cntrl_(0) 4039{ 4040} 4041 4042template<class _Tp> 4043inline _LIBCPP_INLINE_VISIBILITY 4044_LIBCPP_CONSTEXPR 4045shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT 4046 : __ptr_(0), 4047 __cntrl_(0) 4048{ 4049} 4050 4051template<class _Tp> 4052template<class _Yp, class> 4053shared_ptr<_Tp>::shared_ptr(_Yp* __p) 4054 : __ptr_(__p) 4055{ 4056 unique_ptr<_Yp> __hold(__p); 4057 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4058 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), allocator<_Yp>()); 4059 __hold.release(); 4060 __enable_weak_this(__p); 4061} 4062 4063template<class _Tp> 4064template<class _Yp, class _Dp, class> 4065shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d) 4066 : __ptr_(__p) 4067{ 4068#ifndef _LIBCPP_NO_EXCEPTIONS 4069 try 4070 { 4071#endif // _LIBCPP_NO_EXCEPTIONS 4072 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4073 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Yp>()); 4074 __enable_weak_this(__p); 4075#ifndef _LIBCPP_NO_EXCEPTIONS 4076 } 4077 catch (...) 4078 { 4079 __d(__p); 4080 throw; 4081 } 4082#endif // _LIBCPP_NO_EXCEPTIONS 4083} 4084 4085template<class _Tp> 4086template<class _Dp> 4087shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) 4088 : __ptr_(0) 4089{ 4090#ifndef _LIBCPP_NO_EXCEPTIONS 4091 try 4092 { 4093#endif // _LIBCPP_NO_EXCEPTIONS 4094 typedef __shared_ptr_pointer<nullptr_t, _Dp, allocator<_Tp> > _CntrlBlk; 4095 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Tp>()); 4096#ifndef _LIBCPP_NO_EXCEPTIONS 4097 } 4098 catch (...) 4099 { 4100 __d(__p); 4101 throw; 4102 } 4103#endif // _LIBCPP_NO_EXCEPTIONS 4104} 4105 4106template<class _Tp> 4107template<class _Yp, class _Dp, class _Alloc, class> 4108shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a) 4109 : __ptr_(__p) 4110{ 4111#ifndef _LIBCPP_NO_EXCEPTIONS 4112 try 4113 { 4114#endif // _LIBCPP_NO_EXCEPTIONS 4115 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; 4116 typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; 4117 typedef __allocator_destructor<_A2> _D2; 4118 _A2 __a2(__a); 4119 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4120 ::new(__hold2.get()) _CntrlBlk(__p, __d, __a); 4121 __cntrl_ = __hold2.release(); 4122 __enable_weak_this(__p); 4123#ifndef _LIBCPP_NO_EXCEPTIONS 4124 } 4125 catch (...) 4126 { 4127 __d(__p); 4128 throw; 4129 } 4130#endif // _LIBCPP_NO_EXCEPTIONS 4131} 4132 4133template<class _Tp> 4134template<class _Dp, class _Alloc> 4135shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) 4136 : __ptr_(0) 4137{ 4138#ifndef _LIBCPP_NO_EXCEPTIONS 4139 try 4140 { 4141#endif // _LIBCPP_NO_EXCEPTIONS 4142 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; 4143 typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; 4144 typedef __allocator_destructor<_A2> _D2; 4145 _A2 __a2(__a); 4146 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4147 ::new(__hold2.get()) _CntrlBlk(__p, __d, __a); 4148 __cntrl_ = __hold2.release(); 4149#ifndef _LIBCPP_NO_EXCEPTIONS 4150 } 4151 catch (...) 4152 { 4153 __d(__p); 4154 throw; 4155 } 4156#endif // _LIBCPP_NO_EXCEPTIONS 4157} 4158 4159template<class _Tp> 4160template<class _Yp> 4161inline _LIBCPP_INLINE_VISIBILITY 4162shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT 4163 : __ptr_(__p), 4164 __cntrl_(__r.__cntrl_) 4165{ 4166 if (__cntrl_) 4167 __cntrl_->__add_shared(); 4168} 4169 4170template<class _Tp> 4171inline _LIBCPP_INLINE_VISIBILITY 4172shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT 4173 : __ptr_(__r.__ptr_), 4174 __cntrl_(__r.__cntrl_) 4175{ 4176 if (__cntrl_) 4177 __cntrl_->__add_shared(); 4178} 4179 4180template<class _Tp> 4181template<class _Yp> 4182inline _LIBCPP_INLINE_VISIBILITY 4183shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, 4184 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4185 _NOEXCEPT 4186 : __ptr_(__r.__ptr_), 4187 __cntrl_(__r.__cntrl_) 4188{ 4189 if (__cntrl_) 4190 __cntrl_->__add_shared(); 4191} 4192 4193#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4194 4195template<class _Tp> 4196inline _LIBCPP_INLINE_VISIBILITY 4197shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT 4198 : __ptr_(__r.__ptr_), 4199 __cntrl_(__r.__cntrl_) 4200{ 4201 __r.__ptr_ = 0; 4202 __r.__cntrl_ = 0; 4203} 4204 4205template<class _Tp> 4206template<class _Yp> 4207inline _LIBCPP_INLINE_VISIBILITY 4208shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, 4209 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4210 _NOEXCEPT 4211 : __ptr_(__r.__ptr_), 4212 __cntrl_(__r.__cntrl_) 4213{ 4214 __r.__ptr_ = 0; 4215 __r.__cntrl_ = 0; 4216} 4217 4218#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4219 4220template<class _Tp> 4221template<class _Yp, class> 4222#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4223shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r) 4224#else 4225shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r) 4226#endif 4227 : __ptr_(__r.get()) 4228{ 4229 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4230 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); 4231 __enable_weak_this(__r.get()); 4232 __r.release(); 4233} 4234 4235template<class _Tp> 4236template <class _Yp, class _Dp, class> 4237#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4238shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4239#else 4240shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4241#endif 4242 typename enable_if<!is_lvalue_reference<_Dp>::value, __nat>::type) 4243 : __ptr_(__r.get()) 4244{ 4245 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4246 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), allocator<_Yp>()); 4247 __enable_weak_this(__r.get()); 4248 __r.release(); 4249} 4250 4251template<class _Tp> 4252template <class _Yp, class _Dp, class> 4253#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4254shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4255#else 4256shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4257#endif 4258 typename enable_if<is_lvalue_reference<_Dp>::value, __nat>::type) 4259 : __ptr_(__r.get()) 4260{ 4261 typedef __shared_ptr_pointer<_Yp*, 4262 reference_wrapper<typename remove_reference<_Dp>::type>, 4263 allocator<_Yp> > _CntrlBlk; 4264 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), allocator<_Yp>()); 4265 __enable_weak_this(__r.get()); 4266 __r.release(); 4267} 4268 4269#ifndef _LIBCPP_HAS_NO_VARIADICS 4270 4271template<class _Tp> 4272template<class ..._Args> 4273shared_ptr<_Tp> 4274shared_ptr<_Tp>::make_shared(_Args&& ...__args) 4275{ 4276 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4277 typedef allocator<_CntrlBlk> _A2; 4278 typedef __allocator_destructor<_A2> _D2; 4279 _A2 __a2; 4280 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4281 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...); 4282 shared_ptr<_Tp> __r; 4283 __r.__ptr_ = __hold2.get()->get(); 4284 __r.__cntrl_ = __hold2.release(); 4285 __r.__enable_weak_this(__r.__ptr_); 4286 return __r; 4287} 4288 4289template<class _Tp> 4290template<class _Alloc, class ..._Args> 4291shared_ptr<_Tp> 4292shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) 4293{ 4294 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4295 typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; 4296 typedef __allocator_destructor<_A2> _D2; 4297 _A2 __a2(__a); 4298 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4299 ::new(__hold2.get()) _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...); 4300 shared_ptr<_Tp> __r; 4301 __r.__ptr_ = __hold2.get()->get(); 4302 __r.__cntrl_ = __hold2.release(); 4303 __r.__enable_weak_this(__r.__ptr_); 4304 return __r; 4305} 4306 4307#else // _LIBCPP_HAS_NO_VARIADICS 4308 4309template<class _Tp> 4310shared_ptr<_Tp> 4311shared_ptr<_Tp>::make_shared() 4312{ 4313 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4314 typedef allocator<_CntrlBlk> _Alloc2; 4315 typedef __allocator_destructor<_Alloc2> _D2; 4316 _Alloc2 __alloc2; 4317 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4318 ::new(__hold2.get()) _CntrlBlk(__alloc2); 4319 shared_ptr<_Tp> __r; 4320 __r.__ptr_ = __hold2.get()->get(); 4321 __r.__cntrl_ = __hold2.release(); 4322 __r.__enable_weak_this(__r.__ptr_); 4323 return __r; 4324} 4325 4326template<class _Tp> 4327template<class _A0> 4328shared_ptr<_Tp> 4329shared_ptr<_Tp>::make_shared(_A0& __a0) 4330{ 4331 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4332 typedef allocator<_CntrlBlk> _Alloc2; 4333 typedef __allocator_destructor<_Alloc2> _D2; 4334 _Alloc2 __alloc2; 4335 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4336 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); 4337 shared_ptr<_Tp> __r; 4338 __r.__ptr_ = __hold2.get()->get(); 4339 __r.__cntrl_ = __hold2.release(); 4340 __r.__enable_weak_this(__r.__ptr_); 4341 return __r; 4342} 4343 4344template<class _Tp> 4345template<class _A0, class _A1> 4346shared_ptr<_Tp> 4347shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) 4348{ 4349 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4350 typedef allocator<_CntrlBlk> _Alloc2; 4351 typedef __allocator_destructor<_Alloc2> _D2; 4352 _Alloc2 __alloc2; 4353 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4354 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); 4355 shared_ptr<_Tp> __r; 4356 __r.__ptr_ = __hold2.get()->get(); 4357 __r.__cntrl_ = __hold2.release(); 4358 __r.__enable_weak_this(__r.__ptr_); 4359 return __r; 4360} 4361 4362template<class _Tp> 4363template<class _A0, class _A1, class _A2> 4364shared_ptr<_Tp> 4365shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4366{ 4367 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4368 typedef allocator<_CntrlBlk> _Alloc2; 4369 typedef __allocator_destructor<_Alloc2> _D2; 4370 _Alloc2 __alloc2; 4371 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4372 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); 4373 shared_ptr<_Tp> __r; 4374 __r.__ptr_ = __hold2.get()->get(); 4375 __r.__cntrl_ = __hold2.release(); 4376 __r.__enable_weak_this(__r.__ptr_); 4377 return __r; 4378} 4379 4380template<class _Tp> 4381template<class _Alloc> 4382shared_ptr<_Tp> 4383shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) 4384{ 4385 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4386 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4387 typedef __allocator_destructor<_Alloc2> _D2; 4388 _Alloc2 __alloc2(__a); 4389 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4390 ::new(__hold2.get()) _CntrlBlk(__a); 4391 shared_ptr<_Tp> __r; 4392 __r.__ptr_ = __hold2.get()->get(); 4393 __r.__cntrl_ = __hold2.release(); 4394 __r.__enable_weak_this(__r.__ptr_); 4395 return __r; 4396} 4397 4398template<class _Tp> 4399template<class _Alloc, class _A0> 4400shared_ptr<_Tp> 4401shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) 4402{ 4403 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4404 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4405 typedef __allocator_destructor<_Alloc2> _D2; 4406 _Alloc2 __alloc2(__a); 4407 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4408 ::new(__hold2.get()) _CntrlBlk(__a, __a0); 4409 shared_ptr<_Tp> __r; 4410 __r.__ptr_ = __hold2.get()->get(); 4411 __r.__cntrl_ = __hold2.release(); 4412 __r.__enable_weak_this(__r.__ptr_); 4413 return __r; 4414} 4415 4416template<class _Tp> 4417template<class _Alloc, class _A0, class _A1> 4418shared_ptr<_Tp> 4419shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4420{ 4421 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4422 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4423 typedef __allocator_destructor<_Alloc2> _D2; 4424 _Alloc2 __alloc2(__a); 4425 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4426 ::new(__hold2.get()) _CntrlBlk(__a, __a0, __a1); 4427 shared_ptr<_Tp> __r; 4428 __r.__ptr_ = __hold2.get()->get(); 4429 __r.__cntrl_ = __hold2.release(); 4430 __r.__enable_weak_this(__r.__ptr_); 4431 return __r; 4432} 4433 4434template<class _Tp> 4435template<class _Alloc, class _A0, class _A1, class _A2> 4436shared_ptr<_Tp> 4437shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4438{ 4439 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4440 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4441 typedef __allocator_destructor<_Alloc2> _D2; 4442 _Alloc2 __alloc2(__a); 4443 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4444 ::new(__hold2.get()) _CntrlBlk(__a, __a0, __a1, __a2); 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 4452#endif // _LIBCPP_HAS_NO_VARIADICS 4453 4454template<class _Tp> 4455shared_ptr<_Tp>::~shared_ptr() 4456{ 4457 if (__cntrl_) 4458 __cntrl_->__release_shared(); 4459} 4460 4461template<class _Tp> 4462inline _LIBCPP_INLINE_VISIBILITY 4463shared_ptr<_Tp>& 4464shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT 4465{ 4466 shared_ptr(__r).swap(*this); 4467 return *this; 4468} 4469 4470template<class _Tp> 4471template<class _Yp> 4472inline _LIBCPP_INLINE_VISIBILITY 4473typename enable_if 4474< 4475 is_convertible<_Yp*, _Tp*>::value, 4476 shared_ptr<_Tp>& 4477>::type 4478shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT 4479{ 4480 shared_ptr(__r).swap(*this); 4481 return *this; 4482} 4483 4484#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4485 4486template<class _Tp> 4487inline _LIBCPP_INLINE_VISIBILITY 4488shared_ptr<_Tp>& 4489shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT 4490{ 4491 shared_ptr(_VSTD::move(__r)).swap(*this); 4492 return *this; 4493} 4494 4495template<class _Tp> 4496template<class _Yp> 4497inline _LIBCPP_INLINE_VISIBILITY 4498typename enable_if 4499< 4500 is_convertible<_Yp*, _Tp*>::value, 4501 shared_ptr<_Tp>& 4502>::type 4503shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) 4504{ 4505 shared_ptr(_VSTD::move(__r)).swap(*this); 4506 return *this; 4507} 4508 4509template<class _Tp> 4510template<class _Yp> 4511inline _LIBCPP_INLINE_VISIBILITY 4512typename enable_if 4513< 4514 !is_array<_Yp>::value && 4515 is_convertible<_Yp*, _Tp*>::value, 4516 shared_ptr<_Tp>& 4517>::type 4518shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) 4519{ 4520 shared_ptr(_VSTD::move(__r)).swap(*this); 4521 return *this; 4522} 4523 4524template<class _Tp> 4525template <class _Yp, class _Dp> 4526inline _LIBCPP_INLINE_VISIBILITY 4527typename enable_if 4528< 4529 !is_array<_Yp>::value && 4530 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4531 shared_ptr<_Tp>& 4532>::type 4533shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) 4534{ 4535 shared_ptr(_VSTD::move(__r)).swap(*this); 4536 return *this; 4537} 4538 4539#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4540 4541template<class _Tp> 4542template<class _Yp> 4543inline _LIBCPP_INLINE_VISIBILITY 4544typename enable_if 4545< 4546 !is_array<_Yp>::value && 4547 is_convertible<_Yp*, _Tp*>::value, 4548 shared_ptr<_Tp>& 4549>::type 4550shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) 4551{ 4552 shared_ptr(__r).swap(*this); 4553 return *this; 4554} 4555 4556template<class _Tp> 4557template <class _Yp, class _Dp> 4558inline _LIBCPP_INLINE_VISIBILITY 4559typename enable_if 4560< 4561 !is_array<_Yp>::value && 4562 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4563 shared_ptr<_Tp>& 4564>::type 4565shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) 4566{ 4567 shared_ptr(_VSTD::move(__r)).swap(*this); 4568 return *this; 4569} 4570 4571#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4572 4573template<class _Tp> 4574inline _LIBCPP_INLINE_VISIBILITY 4575void 4576shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT 4577{ 4578 _VSTD::swap(__ptr_, __r.__ptr_); 4579 _VSTD::swap(__cntrl_, __r.__cntrl_); 4580} 4581 4582template<class _Tp> 4583inline _LIBCPP_INLINE_VISIBILITY 4584void 4585shared_ptr<_Tp>::reset() _NOEXCEPT 4586{ 4587 shared_ptr().swap(*this); 4588} 4589 4590template<class _Tp> 4591template<class _Yp> 4592inline _LIBCPP_INLINE_VISIBILITY 4593typename enable_if 4594< 4595 is_convertible<_Yp*, _Tp*>::value, 4596 void 4597>::type 4598shared_ptr<_Tp>::reset(_Yp* __p) 4599{ 4600 shared_ptr(__p).swap(*this); 4601} 4602 4603template<class _Tp> 4604template<class _Yp, class _Dp> 4605inline _LIBCPP_INLINE_VISIBILITY 4606typename enable_if 4607< 4608 is_convertible<_Yp*, _Tp*>::value, 4609 void 4610>::type 4611shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) 4612{ 4613 shared_ptr(__p, __d).swap(*this); 4614} 4615 4616template<class _Tp> 4617template<class _Yp, class _Dp, class _Alloc> 4618inline _LIBCPP_INLINE_VISIBILITY 4619typename enable_if 4620< 4621 is_convertible<_Yp*, _Tp*>::value, 4622 void 4623>::type 4624shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) 4625{ 4626 shared_ptr(__p, __d, __a).swap(*this); 4627} 4628 4629#ifndef _LIBCPP_HAS_NO_VARIADICS 4630 4631template<class _Tp, class ..._Args> 4632inline _LIBCPP_INLINE_VISIBILITY 4633typename enable_if 4634< 4635 !is_array<_Tp>::value, 4636 shared_ptr<_Tp> 4637>::type 4638make_shared(_Args&& ...__args) 4639{ 4640 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...); 4641} 4642 4643template<class _Tp, class _Alloc, class ..._Args> 4644inline _LIBCPP_INLINE_VISIBILITY 4645typename enable_if 4646< 4647 !is_array<_Tp>::value, 4648 shared_ptr<_Tp> 4649>::type 4650allocate_shared(const _Alloc& __a, _Args&& ...__args) 4651{ 4652 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...); 4653} 4654 4655#else // _LIBCPP_HAS_NO_VARIADICS 4656 4657template<class _Tp> 4658inline _LIBCPP_INLINE_VISIBILITY 4659shared_ptr<_Tp> 4660make_shared() 4661{ 4662 return shared_ptr<_Tp>::make_shared(); 4663} 4664 4665template<class _Tp, class _A0> 4666inline _LIBCPP_INLINE_VISIBILITY 4667shared_ptr<_Tp> 4668make_shared(_A0& __a0) 4669{ 4670 return shared_ptr<_Tp>::make_shared(__a0); 4671} 4672 4673template<class _Tp, class _A0, class _A1> 4674inline _LIBCPP_INLINE_VISIBILITY 4675shared_ptr<_Tp> 4676make_shared(_A0& __a0, _A1& __a1) 4677{ 4678 return shared_ptr<_Tp>::make_shared(__a0, __a1); 4679} 4680 4681template<class _Tp, class _A0, class _A1, class _A2> 4682inline _LIBCPP_INLINE_VISIBILITY 4683shared_ptr<_Tp> 4684make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4685{ 4686 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); 4687} 4688 4689template<class _Tp, class _Alloc> 4690inline _LIBCPP_INLINE_VISIBILITY 4691shared_ptr<_Tp> 4692allocate_shared(const _Alloc& __a) 4693{ 4694 return shared_ptr<_Tp>::allocate_shared(__a); 4695} 4696 4697template<class _Tp, class _Alloc, class _A0> 4698inline _LIBCPP_INLINE_VISIBILITY 4699shared_ptr<_Tp> 4700allocate_shared(const _Alloc& __a, _A0& __a0) 4701{ 4702 return shared_ptr<_Tp>::allocate_shared(__a, __a0); 4703} 4704 4705template<class _Tp, class _Alloc, class _A0, class _A1> 4706inline _LIBCPP_INLINE_VISIBILITY 4707shared_ptr<_Tp> 4708allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4709{ 4710 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); 4711} 4712 4713template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> 4714inline _LIBCPP_INLINE_VISIBILITY 4715shared_ptr<_Tp> 4716allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4717{ 4718 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); 4719} 4720 4721#endif // _LIBCPP_HAS_NO_VARIADICS 4722 4723template<class _Tp, class _Up> 4724inline _LIBCPP_INLINE_VISIBILITY 4725bool 4726operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4727{ 4728 return __x.get() == __y.get(); 4729} 4730 4731template<class _Tp, class _Up> 4732inline _LIBCPP_INLINE_VISIBILITY 4733bool 4734operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4735{ 4736 return !(__x == __y); 4737} 4738 4739template<class _Tp, class _Up> 4740inline _LIBCPP_INLINE_VISIBILITY 4741bool 4742operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4743{ 4744 typedef typename common_type<_Tp*, _Up*>::type _V; 4745 return less<_V>()(__x.get(), __y.get()); 4746} 4747 4748template<class _Tp, class _Up> 4749inline _LIBCPP_INLINE_VISIBILITY 4750bool 4751operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4752{ 4753 return __y < __x; 4754} 4755 4756template<class _Tp, class _Up> 4757inline _LIBCPP_INLINE_VISIBILITY 4758bool 4759operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4760{ 4761 return !(__y < __x); 4762} 4763 4764template<class _Tp, class _Up> 4765inline _LIBCPP_INLINE_VISIBILITY 4766bool 4767operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4768{ 4769 return !(__x < __y); 4770} 4771 4772template<class _Tp> 4773inline _LIBCPP_INLINE_VISIBILITY 4774bool 4775operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4776{ 4777 return !__x; 4778} 4779 4780template<class _Tp> 4781inline _LIBCPP_INLINE_VISIBILITY 4782bool 4783operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4784{ 4785 return !__x; 4786} 4787 4788template<class _Tp> 4789inline _LIBCPP_INLINE_VISIBILITY 4790bool 4791operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4792{ 4793 return static_cast<bool>(__x); 4794} 4795 4796template<class _Tp> 4797inline _LIBCPP_INLINE_VISIBILITY 4798bool 4799operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4800{ 4801 return static_cast<bool>(__x); 4802} 4803 4804template<class _Tp> 4805inline _LIBCPP_INLINE_VISIBILITY 4806bool 4807operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4808{ 4809 return less<_Tp*>()(__x.get(), nullptr); 4810} 4811 4812template<class _Tp> 4813inline _LIBCPP_INLINE_VISIBILITY 4814bool 4815operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4816{ 4817 return less<_Tp*>()(nullptr, __x.get()); 4818} 4819 4820template<class _Tp> 4821inline _LIBCPP_INLINE_VISIBILITY 4822bool 4823operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4824{ 4825 return nullptr < __x; 4826} 4827 4828template<class _Tp> 4829inline _LIBCPP_INLINE_VISIBILITY 4830bool 4831operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4832{ 4833 return __x < nullptr; 4834} 4835 4836template<class _Tp> 4837inline _LIBCPP_INLINE_VISIBILITY 4838bool 4839operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4840{ 4841 return !(nullptr < __x); 4842} 4843 4844template<class _Tp> 4845inline _LIBCPP_INLINE_VISIBILITY 4846bool 4847operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4848{ 4849 return !(__x < nullptr); 4850} 4851 4852template<class _Tp> 4853inline _LIBCPP_INLINE_VISIBILITY 4854bool 4855operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4856{ 4857 return !(__x < nullptr); 4858} 4859 4860template<class _Tp> 4861inline _LIBCPP_INLINE_VISIBILITY 4862bool 4863operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4864{ 4865 return !(nullptr < __x); 4866} 4867 4868template<class _Tp> 4869inline _LIBCPP_INLINE_VISIBILITY 4870void 4871swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT 4872{ 4873 __x.swap(__y); 4874} 4875 4876template<class _Tp, class _Up> 4877inline _LIBCPP_INLINE_VISIBILITY 4878typename enable_if 4879< 4880 !is_array<_Tp>::value && !is_array<_Up>::value, 4881 shared_ptr<_Tp> 4882>::type 4883static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4884{ 4885 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); 4886} 4887 4888template<class _Tp, class _Up> 4889inline _LIBCPP_INLINE_VISIBILITY 4890typename enable_if 4891< 4892 !is_array<_Tp>::value && !is_array<_Up>::value, 4893 shared_ptr<_Tp> 4894>::type 4895dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4896{ 4897 _Tp* __p = dynamic_cast<_Tp*>(__r.get()); 4898 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); 4899} 4900 4901template<class _Tp, class _Up> 4902typename enable_if 4903< 4904 is_array<_Tp>::value == is_array<_Up>::value, 4905 shared_ptr<_Tp> 4906>::type 4907const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4908{ 4909 typedef typename remove_extent<_Tp>::type _RTp; 4910 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get())); 4911} 4912 4913#ifndef _LIBCPP_NO_RTTI 4914 4915template<class _Dp, class _Tp> 4916inline _LIBCPP_INLINE_VISIBILITY 4917_Dp* 4918get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT 4919{ 4920 return __p.template __get_deleter<_Dp>(); 4921} 4922 4923#endif // _LIBCPP_NO_RTTI 4924 4925template<class _Tp> 4926class _LIBCPP_TYPE_VIS weak_ptr 4927{ 4928public: 4929 typedef _Tp element_type; 4930private: 4931 element_type* __ptr_; 4932 __shared_weak_count* __cntrl_; 4933 4934public: 4935 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT; 4936 template<class _Yp> weak_ptr(shared_ptr<_Yp> const& __r, 4937 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4938 _NOEXCEPT; 4939 weak_ptr(weak_ptr const& __r) _NOEXCEPT; 4940 template<class _Yp> weak_ptr(weak_ptr<_Yp> const& __r, 4941 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4942 _NOEXCEPT; 4943 4944#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4945 weak_ptr(weak_ptr&& __r) _NOEXCEPT; 4946 template<class _Yp> weak_ptr(weak_ptr<_Yp>&& __r, 4947 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4948 _NOEXCEPT; 4949#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4950 ~weak_ptr(); 4951 4952 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT; 4953 template<class _Yp> 4954 typename enable_if 4955 < 4956 is_convertible<_Yp*, element_type*>::value, 4957 weak_ptr& 4958 >::type 4959 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT; 4960 4961#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4962 4963 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT; 4964 template<class _Yp> 4965 typename enable_if 4966 < 4967 is_convertible<_Yp*, element_type*>::value, 4968 weak_ptr& 4969 >::type 4970 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT; 4971 4972#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4973 4974 template<class _Yp> 4975 typename enable_if 4976 < 4977 is_convertible<_Yp*, element_type*>::value, 4978 weak_ptr& 4979 >::type 4980 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT; 4981 4982 void swap(weak_ptr& __r) _NOEXCEPT; 4983 void reset() _NOEXCEPT; 4984 4985 _LIBCPP_INLINE_VISIBILITY 4986 long use_count() const _NOEXCEPT 4987 {return __cntrl_ ? __cntrl_->use_count() : 0;} 4988 _LIBCPP_INLINE_VISIBILITY 4989 bool expired() const _NOEXCEPT 4990 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} 4991 shared_ptr<_Tp> lock() const _NOEXCEPT; 4992 template<class _Up> 4993 _LIBCPP_INLINE_VISIBILITY 4994 bool owner_before(const shared_ptr<_Up>& __r) const 4995 {return __cntrl_ < __r.__cntrl_;} 4996 template<class _Up> 4997 _LIBCPP_INLINE_VISIBILITY 4998 bool owner_before(const weak_ptr<_Up>& __r) const 4999 {return __cntrl_ < __r.__cntrl_;} 5000 5001 template <class _Up> friend class _LIBCPP_TYPE_VIS weak_ptr; 5002 template <class _Up> friend class _LIBCPP_TYPE_VIS shared_ptr; 5003}; 5004 5005template<class _Tp> 5006inline _LIBCPP_INLINE_VISIBILITY 5007_LIBCPP_CONSTEXPR 5008weak_ptr<_Tp>::weak_ptr() _NOEXCEPT 5009 : __ptr_(0), 5010 __cntrl_(0) 5011{ 5012} 5013 5014template<class _Tp> 5015inline _LIBCPP_INLINE_VISIBILITY 5016weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT 5017 : __ptr_(__r.__ptr_), 5018 __cntrl_(__r.__cntrl_) 5019{ 5020 if (__cntrl_) 5021 __cntrl_->__add_weak(); 5022} 5023 5024template<class _Tp> 5025template<class _Yp> 5026inline _LIBCPP_INLINE_VISIBILITY 5027weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, 5028 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5029 _NOEXCEPT 5030 : __ptr_(__r.__ptr_), 5031 __cntrl_(__r.__cntrl_) 5032{ 5033 if (__cntrl_) 5034 __cntrl_->__add_weak(); 5035} 5036 5037template<class _Tp> 5038template<class _Yp> 5039inline _LIBCPP_INLINE_VISIBILITY 5040weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, 5041 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5042 _NOEXCEPT 5043 : __ptr_(__r.__ptr_), 5044 __cntrl_(__r.__cntrl_) 5045{ 5046 if (__cntrl_) 5047 __cntrl_->__add_weak(); 5048} 5049 5050#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5051 5052template<class _Tp> 5053inline _LIBCPP_INLINE_VISIBILITY 5054weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT 5055 : __ptr_(__r.__ptr_), 5056 __cntrl_(__r.__cntrl_) 5057{ 5058 __r.__ptr_ = 0; 5059 __r.__cntrl_ = 0; 5060} 5061 5062template<class _Tp> 5063template<class _Yp> 5064inline _LIBCPP_INLINE_VISIBILITY 5065weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r, 5066 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5067 _NOEXCEPT 5068 : __ptr_(__r.__ptr_), 5069 __cntrl_(__r.__cntrl_) 5070{ 5071 __r.__ptr_ = 0; 5072 __r.__cntrl_ = 0; 5073} 5074 5075#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5076 5077template<class _Tp> 5078weak_ptr<_Tp>::~weak_ptr() 5079{ 5080 if (__cntrl_) 5081 __cntrl_->__release_weak(); 5082} 5083 5084template<class _Tp> 5085inline _LIBCPP_INLINE_VISIBILITY 5086weak_ptr<_Tp>& 5087weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT 5088{ 5089 weak_ptr(__r).swap(*this); 5090 return *this; 5091} 5092 5093template<class _Tp> 5094template<class _Yp> 5095inline _LIBCPP_INLINE_VISIBILITY 5096typename enable_if 5097< 5098 is_convertible<_Yp*, _Tp*>::value, 5099 weak_ptr<_Tp>& 5100>::type 5101weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT 5102{ 5103 weak_ptr(__r).swap(*this); 5104 return *this; 5105} 5106 5107#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5108 5109template<class _Tp> 5110inline _LIBCPP_INLINE_VISIBILITY 5111weak_ptr<_Tp>& 5112weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT 5113{ 5114 weak_ptr(_VSTD::move(__r)).swap(*this); 5115 return *this; 5116} 5117 5118template<class _Tp> 5119template<class _Yp> 5120inline _LIBCPP_INLINE_VISIBILITY 5121typename enable_if 5122< 5123 is_convertible<_Yp*, _Tp*>::value, 5124 weak_ptr<_Tp>& 5125>::type 5126weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT 5127{ 5128 weak_ptr(_VSTD::move(__r)).swap(*this); 5129 return *this; 5130} 5131 5132#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5133 5134template<class _Tp> 5135template<class _Yp> 5136inline _LIBCPP_INLINE_VISIBILITY 5137typename enable_if 5138< 5139 is_convertible<_Yp*, _Tp*>::value, 5140 weak_ptr<_Tp>& 5141>::type 5142weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT 5143{ 5144 weak_ptr(__r).swap(*this); 5145 return *this; 5146} 5147 5148template<class _Tp> 5149inline _LIBCPP_INLINE_VISIBILITY 5150void 5151weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT 5152{ 5153 _VSTD::swap(__ptr_, __r.__ptr_); 5154 _VSTD::swap(__cntrl_, __r.__cntrl_); 5155} 5156 5157template<class _Tp> 5158inline _LIBCPP_INLINE_VISIBILITY 5159void 5160swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT 5161{ 5162 __x.swap(__y); 5163} 5164 5165template<class _Tp> 5166inline _LIBCPP_INLINE_VISIBILITY 5167void 5168weak_ptr<_Tp>::reset() _NOEXCEPT 5169{ 5170 weak_ptr().swap(*this); 5171} 5172 5173template<class _Tp> 5174template<class _Yp> 5175shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, 5176 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 5177 : __ptr_(__r.__ptr_), 5178 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) 5179{ 5180 if (__cntrl_ == 0) 5181#ifndef _LIBCPP_NO_EXCEPTIONS 5182 throw bad_weak_ptr(); 5183#else 5184 assert(!"bad_weak_ptr"); 5185#endif 5186} 5187 5188template<class _Tp> 5189shared_ptr<_Tp> 5190weak_ptr<_Tp>::lock() const _NOEXCEPT 5191{ 5192 shared_ptr<_Tp> __r; 5193 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; 5194 if (__r.__cntrl_) 5195 __r.__ptr_ = __ptr_; 5196 return __r; 5197} 5198 5199template <class _Tp> struct owner_less; 5200 5201template <class _Tp> 5202struct _LIBCPP_TYPE_VIS owner_less<shared_ptr<_Tp> > 5203 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> 5204{ 5205 typedef bool result_type; 5206 _LIBCPP_INLINE_VISIBILITY 5207 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5208 {return __x.owner_before(__y);} 5209 _LIBCPP_INLINE_VISIBILITY 5210 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5211 {return __x.owner_before(__y);} 5212 _LIBCPP_INLINE_VISIBILITY 5213 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5214 {return __x.owner_before(__y);} 5215}; 5216 5217template <class _Tp> 5218struct _LIBCPP_TYPE_VIS owner_less<weak_ptr<_Tp> > 5219 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> 5220{ 5221 typedef bool result_type; 5222 _LIBCPP_INLINE_VISIBILITY 5223 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5224 {return __x.owner_before(__y);} 5225 _LIBCPP_INLINE_VISIBILITY 5226 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5227 {return __x.owner_before(__y);} 5228 _LIBCPP_INLINE_VISIBILITY 5229 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5230 {return __x.owner_before(__y);} 5231}; 5232 5233template<class _Tp> 5234class _LIBCPP_TYPE_VIS enable_shared_from_this 5235{ 5236 mutable weak_ptr<_Tp> __weak_this_; 5237protected: 5238 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 5239 enable_shared_from_this() _NOEXCEPT {} 5240 _LIBCPP_INLINE_VISIBILITY 5241 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {} 5242 _LIBCPP_INLINE_VISIBILITY 5243 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT 5244 {return *this;} 5245 _LIBCPP_INLINE_VISIBILITY 5246 ~enable_shared_from_this() {} 5247public: 5248 _LIBCPP_INLINE_VISIBILITY 5249 shared_ptr<_Tp> shared_from_this() 5250 {return shared_ptr<_Tp>(__weak_this_);} 5251 _LIBCPP_INLINE_VISIBILITY 5252 shared_ptr<_Tp const> shared_from_this() const 5253 {return shared_ptr<const _Tp>(__weak_this_);} 5254 5255 template <class _Up> friend class shared_ptr; 5256}; 5257 5258template <class _Tp> 5259struct _LIBCPP_TYPE_VIS hash<shared_ptr<_Tp> > 5260{ 5261 typedef shared_ptr<_Tp> argument_type; 5262 typedef size_t result_type; 5263 _LIBCPP_INLINE_VISIBILITY 5264 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 5265 { 5266 return hash<_Tp*>()(__ptr.get()); 5267 } 5268}; 5269 5270template<class _CharT, class _Traits, class _Yp> 5271inline _LIBCPP_INLINE_VISIBILITY 5272basic_ostream<_CharT, _Traits>& 5273operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p); 5274 5275#if __has_feature(cxx_atomic) 5276 5277class __sp_mut 5278{ 5279 void* __lx; 5280public: 5281 void lock() _NOEXCEPT; 5282 void unlock() _NOEXCEPT; 5283 5284private: 5285 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT; 5286 __sp_mut(const __sp_mut&); 5287 __sp_mut& operator=(const __sp_mut&); 5288 5289 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5290}; 5291 5292_LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5293 5294template <class _Tp> 5295inline _LIBCPP_INLINE_VISIBILITY 5296bool 5297atomic_is_lock_free(const shared_ptr<_Tp>*) 5298{ 5299 return false; 5300} 5301 5302template <class _Tp> 5303shared_ptr<_Tp> 5304atomic_load(const shared_ptr<_Tp>* __p) 5305{ 5306 __sp_mut& __m = __get_sp_mut(__p); 5307 __m.lock(); 5308 shared_ptr<_Tp> __q = *__p; 5309 __m.unlock(); 5310 return __q; 5311} 5312 5313template <class _Tp> 5314inline _LIBCPP_INLINE_VISIBILITY 5315shared_ptr<_Tp> 5316atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) 5317{ 5318 return atomic_load(__p); 5319} 5320 5321template <class _Tp> 5322void 5323atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5324{ 5325 __sp_mut& __m = __get_sp_mut(__p); 5326 __m.lock(); 5327 __p->swap(__r); 5328 __m.unlock(); 5329} 5330 5331template <class _Tp> 5332inline _LIBCPP_INLINE_VISIBILITY 5333void 5334atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5335{ 5336 atomic_store(__p, __r); 5337} 5338 5339template <class _Tp> 5340shared_ptr<_Tp> 5341atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5342{ 5343 __sp_mut& __m = __get_sp_mut(__p); 5344 __m.lock(); 5345 __p->swap(__r); 5346 __m.unlock(); 5347 return __r; 5348} 5349 5350template <class _Tp> 5351inline _LIBCPP_INLINE_VISIBILITY 5352shared_ptr<_Tp> 5353atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5354{ 5355 return atomic_exchange(__p, __r); 5356} 5357 5358template <class _Tp> 5359bool 5360atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5361{ 5362 __sp_mut& __m = __get_sp_mut(__p); 5363 __m.lock(); 5364 if (__p->__owner_equivalent(*__v)) 5365 { 5366 *__p = __w; 5367 __m.unlock(); 5368 return true; 5369 } 5370 *__v = *__p; 5371 __m.unlock(); 5372 return false; 5373} 5374 5375template <class _Tp> 5376inline _LIBCPP_INLINE_VISIBILITY 5377bool 5378atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5379{ 5380 return atomic_compare_exchange_strong(__p, __v, __w); 5381} 5382 5383template <class _Tp> 5384inline _LIBCPP_INLINE_VISIBILITY 5385bool 5386atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5387 shared_ptr<_Tp> __w, memory_order, memory_order) 5388{ 5389 return atomic_compare_exchange_strong(__p, __v, __w); 5390} 5391 5392template <class _Tp> 5393inline _LIBCPP_INLINE_VISIBILITY 5394bool 5395atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5396 shared_ptr<_Tp> __w, memory_order, memory_order) 5397{ 5398 return atomic_compare_exchange_weak(__p, __v, __w); 5399} 5400 5401#endif // __has_feature(cxx_atomic) 5402 5403//enum class 5404struct _LIBCPP_TYPE_VIS pointer_safety 5405{ 5406 enum __lx 5407 { 5408 relaxed, 5409 preferred, 5410 strict 5411 }; 5412 5413 __lx __v_; 5414 5415 _LIBCPP_INLINE_VISIBILITY 5416 pointer_safety(__lx __v) : __v_(__v) {} 5417 _LIBCPP_INLINE_VISIBILITY 5418 operator int() const {return __v_;} 5419}; 5420 5421void declare_reachable(void* __p); 5422void declare_no_pointers(char* __p, size_t __n); 5423void undeclare_no_pointers(char* __p, size_t __n); 5424pointer_safety get_pointer_safety() _NOEXCEPT; 5425void* __undeclare_reachable(void* __p); 5426 5427template <class _Tp> 5428inline _LIBCPP_INLINE_VISIBILITY 5429_Tp* 5430undeclare_reachable(_Tp* __p) 5431{ 5432 return static_cast<_Tp*>(__undeclare_reachable(__p)); 5433} 5434 5435void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); 5436 5437_LIBCPP_END_NAMESPACE_STD 5438 5439#endif // _LIBCPP_MEMORY 5440