1// -*- C++ -*- 2//===-------------------------- memory ------------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_MEMORY 12#define _LIBCPP_MEMORY 13 14/* 15 memory synopsis 16 17namespace std 18{ 19 20struct allocator_arg_t { }; 21constexpr allocator_arg_t allocator_arg = allocator_arg_t(); 22 23template <class T, class Alloc> struct uses_allocator; 24 25template <class Ptr> 26struct pointer_traits 27{ 28 typedef Ptr pointer; 29 typedef <details> element_type; 30 typedef <details> difference_type; 31 32 template <class U> using rebind = <details>; 33 34 static pointer pointer_to(<details>); 35}; 36 37template <class T> 38struct pointer_traits<T*> 39{ 40 typedef T* pointer; 41 typedef T element_type; 42 typedef ptrdiff_t difference_type; 43 44 template <class U> using rebind = U*; 45 46 static pointer pointer_to(<details>) noexcept; 47}; 48 49template <class Alloc> 50struct allocator_traits 51{ 52 typedef Alloc allocator_type; 53 typedef typename allocator_type::value_type 54 value_type; 55 56 typedef Alloc::pointer | value_type* pointer; 57 typedef Alloc::const_pointer 58 | pointer_traits<pointer>::rebind<const value_type> 59 const_pointer; 60 typedef Alloc::void_pointer 61 | pointer_traits<pointer>::rebind<void> 62 void_pointer; 63 typedef Alloc::const_void_pointer 64 | pointer_traits<pointer>::rebind<const void> 65 const_void_pointer; 66 typedef Alloc::difference_type 67 | pointer_traits<pointer>::difference_type 68 difference_type; 69 typedef Alloc::size_type 70 | make_unsigned<difference_type>::type 71 size_type; 72 typedef Alloc::propagate_on_container_copy_assignment 73 | false_type propagate_on_container_copy_assignment; 74 typedef Alloc::propagate_on_container_move_assignment 75 | false_type propagate_on_container_move_assignment; 76 typedef Alloc::propagate_on_container_swap 77 | false_type propagate_on_container_swap; 78 79 template <class T> using rebind_alloc = Alloc::rebind<U>::other | Alloc<T, Args...>; 80 template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>; 81 82 static pointer allocate(allocator_type& a, size_type n); 83 static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint); 84 85 static void deallocate(allocator_type& a, pointer p, size_type n) noexcept; 86 87 template <class T, class... Args> 88 static void construct(allocator_type& a, T* p, Args&&... args); 89 90 template <class T> 91 static void destroy(allocator_type& a, T* p); 92 93 static size_type max_size(const allocator_type& a); // noexcept in C++14 94 95 static allocator_type 96 select_on_container_copy_construction(const allocator_type& a); 97}; 98 99template <> 100class allocator<void> 101{ 102public: 103 typedef void* pointer; 104 typedef const void* const_pointer; 105 typedef void value_type; 106 107 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 108}; 109 110template <class T> 111class allocator 112{ 113public: 114 typedef size_t size_type; 115 typedef ptrdiff_t difference_type; 116 typedef T* pointer; 117 typedef const T* const_pointer; 118 typedef typename add_lvalue_reference<T>::type reference; 119 typedef typename add_lvalue_reference<const T>::type const_reference; 120 typedef T value_type; 121 122 template <class U> struct rebind {typedef allocator<U> other;}; 123 124 allocator() noexcept; 125 allocator(const allocator&) noexcept; 126 template <class U> allocator(const allocator<U>&) noexcept; 127 ~allocator(); 128 pointer address(reference x) const noexcept; 129 const_pointer address(const_reference x) const noexcept; 130 pointer allocate(size_type, allocator<void>::const_pointer hint = 0); 131 void deallocate(pointer p, size_type n) noexcept; 132 size_type max_size() const noexcept; 133 template<class U, class... Args> 134 void construct(U* p, Args&&... args); 135 template <class U> 136 void destroy(U* p); 137}; 138 139template <class T, class U> 140bool operator==(const allocator<T>&, const allocator<U>&) noexcept; 141 142template <class T, class U> 143bool operator!=(const allocator<T>&, const allocator<U>&) noexcept; 144 145template <class OutputIterator, class T> 146class raw_storage_iterator 147 : public iterator<output_iterator_tag, 148 T, // purposefully not C++03 149 ptrdiff_t, // purposefully not C++03 150 T*, // purposefully not C++03 151 raw_storage_iterator&> // purposefully not C++03 152{ 153public: 154 explicit raw_storage_iterator(OutputIterator x); 155 raw_storage_iterator& operator*(); 156 raw_storage_iterator& operator=(const T& element); 157 raw_storage_iterator& operator++(); 158 raw_storage_iterator operator++(int); 159}; 160 161template <class T> pair<T*,ptrdiff_t> get_temporary_buffer(ptrdiff_t n) noexcept; 162template <class T> void return_temporary_buffer(T* p) noexcept; 163 164template <class T> T* addressof(T& r) noexcept; 165 166template <class InputIterator, class ForwardIterator> 167ForwardIterator 168uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result); 169 170template <class InputIterator, class Size, class ForwardIterator> 171ForwardIterator 172uninitialized_copy_n(InputIterator first, Size n, ForwardIterator result); 173 174template <class ForwardIterator, class T> 175void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x); 176 177template <class ForwardIterator, class Size, class T> 178ForwardIterator 179uninitialized_fill_n(ForwardIterator first, Size n, const T& x); 180 181template <class Y> struct auto_ptr_ref {}; 182 183template<class X> 184class auto_ptr 185{ 186public: 187 typedef X element_type; 188 189 explicit auto_ptr(X* p =0) throw(); 190 auto_ptr(auto_ptr&) throw(); 191 template<class Y> auto_ptr(auto_ptr<Y>&) throw(); 192 auto_ptr& operator=(auto_ptr&) throw(); 193 template<class Y> auto_ptr& operator=(auto_ptr<Y>&) throw(); 194 auto_ptr& operator=(auto_ptr_ref<X> r) throw(); 195 ~auto_ptr() throw(); 196 197 typename add_lvalue_reference<X>::type operator*() const throw(); 198 X* operator->() const throw(); 199 X* get() const throw(); 200 X* release() throw(); 201 void reset(X* p =0) throw(); 202 203 auto_ptr(auto_ptr_ref<X>) throw(); 204 template<class Y> operator auto_ptr_ref<Y>() throw(); 205 template<class Y> operator auto_ptr<Y>() throw(); 206}; 207 208template <class T> 209struct default_delete 210{ 211 constexpr default_delete() noexcept = default; 212 template <class U> default_delete(const default_delete<U>&) noexcept; 213 214 void operator()(T*) const noexcept; 215}; 216 217template <class T> 218struct default_delete<T[]> 219{ 220 constexpr default_delete() noexcept = default; 221 void operator()(T*) const noexcept; 222 template <class U> void operator()(U*) const = delete; 223}; 224 225template <class T, class D = default_delete<T>> 226class unique_ptr 227{ 228public: 229 typedef see below pointer; 230 typedef T element_type; 231 typedef D deleter_type; 232 233 // constructors 234 constexpr unique_ptr() noexcept; 235 explicit unique_ptr(pointer p) noexcept; 236 unique_ptr(pointer p, see below d1) noexcept; 237 unique_ptr(pointer p, see below d2) noexcept; 238 unique_ptr(unique_ptr&& u) noexcept; 239 unique_ptr(nullptr_t) noexcept : unique_ptr() { } 240 template <class U, class E> 241 unique_ptr(unique_ptr<U, E>&& u) noexcept; 242 template <class U> 243 unique_ptr(auto_ptr<U>&& u) noexcept; 244 245 // destructor 246 ~unique_ptr(); 247 248 // assignment 249 unique_ptr& operator=(unique_ptr&& u) noexcept; 250 template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept; 251 unique_ptr& operator=(nullptr_t) noexcept; 252 253 // observers 254 typename add_lvalue_reference<T>::type operator*() const; 255 pointer operator->() const noexcept; 256 pointer get() const noexcept; 257 deleter_type& get_deleter() noexcept; 258 const deleter_type& get_deleter() const noexcept; 259 explicit operator bool() const noexcept; 260 261 // modifiers 262 pointer release() noexcept; 263 void reset(pointer p = pointer()) noexcept; 264 void swap(unique_ptr& u) noexcept; 265}; 266 267template <class T, class D> 268class unique_ptr<T[], D> 269{ 270public: 271 typedef implementation-defined pointer; 272 typedef T element_type; 273 typedef D deleter_type; 274 275 // constructors 276 constexpr unique_ptr() noexcept; 277 explicit unique_ptr(pointer p) noexcept; 278 unique_ptr(pointer p, see below d) noexcept; 279 unique_ptr(pointer p, see below d) noexcept; 280 unique_ptr(unique_ptr&& u) noexcept; 281 unique_ptr(nullptr_t) noexcept : unique_ptr() { } 282 283 // destructor 284 ~unique_ptr(); 285 286 // assignment 287 unique_ptr& operator=(unique_ptr&& u) noexcept; 288 unique_ptr& operator=(nullptr_t) noexcept; 289 290 // observers 291 T& operator[](size_t i) const; 292 pointer get() const noexcept; 293 deleter_type& get_deleter() noexcept; 294 const deleter_type& get_deleter() const noexcept; 295 explicit operator bool() const noexcept; 296 297 // modifiers 298 pointer release() noexcept; 299 void reset(pointer p = pointer()) noexcept; 300 void reset(nullptr_t) noexcept; 301 template <class U> void reset(U) = delete; 302 void swap(unique_ptr& u) noexcept; 303}; 304 305template <class T, class D> 306 void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept; 307 308template <class T1, class D1, class T2, class D2> 309 bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 310template <class T1, class D1, class T2, class D2> 311 bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 312template <class T1, class D1, class T2, class D2> 313 bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 314template <class T1, class D1, class T2, class D2> 315 bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 316template <class T1, class D1, class T2, class D2> 317 bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 318template <class T1, class D1, class T2, class D2> 319 bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); 320 321template <class T, class D> 322 bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; 323template <class T, class D> 324 bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept; 325template <class T, class D> 326 bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept; 327template <class T, class D> 328 bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept; 329 330template <class T, class D> 331 bool operator<(const unique_ptr<T, D>& x, nullptr_t); 332template <class T, class D> 333 bool operator<(nullptr_t, const unique_ptr<T, D>& y); 334template <class T, class D> 335 bool operator<=(const unique_ptr<T, D>& x, nullptr_t); 336template <class T, class D> 337 bool operator<=(nullptr_t, const unique_ptr<T, D>& y); 338template <class T, class D> 339 bool operator>(const unique_ptr<T, D>& x, nullptr_t); 340template <class T, class D> 341 bool operator>(nullptr_t, const unique_ptr<T, D>& y); 342template <class T, class D> 343 bool operator>=(const unique_ptr<T, D>& x, nullptr_t); 344template <class T, class D> 345 bool operator>=(nullptr_t, const unique_ptr<T, D>& y); 346 347class bad_weak_ptr 348 : public std::exception 349{ 350 bad_weak_ptr() noexcept; 351}; 352 353template<class T, class... Args> unique_ptr<T> make_unique(Args&&... args); // C++14 354template<class T> unique_ptr<T> make_unique(size_t n); // C++14 355template<class T, class... Args> unspecified make_unique(Args&&...) = delete; // C++14, T == U[N] 356 357template<class T> 358class shared_ptr 359{ 360public: 361 typedef T element_type; 362 363 // constructors: 364 constexpr shared_ptr() noexcept; 365 template<class Y> explicit shared_ptr(Y* p); 366 template<class Y, class D> shared_ptr(Y* p, D d); 367 template<class Y, class D, class A> shared_ptr(Y* p, D d, A a); 368 template <class D> shared_ptr(nullptr_t p, D d); 369 template <class D, class A> shared_ptr(nullptr_t p, D d, A a); 370 template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p) noexcept; 371 shared_ptr(const shared_ptr& r) noexcept; 372 template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept; 373 shared_ptr(shared_ptr&& r) noexcept; 374 template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept; 375 template<class Y> explicit shared_ptr(const weak_ptr<Y>& r); 376 template<class Y> shared_ptr(auto_ptr<Y>&& r); 377 template <class Y, class D> shared_ptr(unique_ptr<Y, D>&& r); 378 shared_ptr(nullptr_t) : shared_ptr() { } 379 380 // destructor: 381 ~shared_ptr(); 382 383 // assignment: 384 shared_ptr& operator=(const shared_ptr& r) noexcept; 385 template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept; 386 shared_ptr& operator=(shared_ptr&& r) noexcept; 387 template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r); 388 template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); 389 template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r); 390 391 // modifiers: 392 void swap(shared_ptr& r) noexcept; 393 void reset() noexcept; 394 template<class Y> void reset(Y* p); 395 template<class Y, class D> void reset(Y* p, D d); 396 template<class Y, class D, class A> void reset(Y* p, D d, A a); 397 398 // observers: 399 T* get() const noexcept; 400 T& operator*() const noexcept; 401 T* operator->() const noexcept; 402 long use_count() const noexcept; 403 bool unique() const noexcept; 404 explicit operator bool() const noexcept; 405 template<class U> bool owner_before(shared_ptr<U> const& b) const; 406 template<class U> bool owner_before(weak_ptr<U> const& b) const; 407}; 408 409// shared_ptr comparisons: 410template<class T, class U> 411 bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 412template<class T, class U> 413 bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 414template<class T, class U> 415 bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 416template<class T, class U> 417 bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 418template<class T, class U> 419 bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 420template<class T, class U> 421 bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 422 423template <class T> 424 bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept; 425template <class T> 426 bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept; 427template <class T> 428 bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept; 429template <class T> 430 bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept; 431template <class T> 432 bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept; 433template <class T> 434bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept; 435template <class T> 436 bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept; 437template <class T> 438 bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept; 439template <class T> 440 bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept; 441template <class T> 442 bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept; 443template <class T> 444 bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept; 445template <class T> 446 bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept; 447 448// shared_ptr specialized algorithms: 449template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept; 450 451// shared_ptr casts: 452template<class T, class U> 453 shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept; 454template<class T, class U> 455 shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept; 456template<class T, class U> 457 shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept; 458 459// shared_ptr I/O: 460template<class E, class T, class Y> 461 basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, shared_ptr<Y> const& p); 462 463// shared_ptr get_deleter: 464template<class D, class T> D* get_deleter(shared_ptr<T> const& p) noexcept; 465 466template<class T, class... Args> 467 shared_ptr<T> make_shared(Args&&... args); 468template<class T, class A, class... Args> 469 shared_ptr<T> allocate_shared(const A& a, Args&&... args); 470 471template<class T> 472class weak_ptr 473{ 474public: 475 typedef T element_type; 476 477 // constructors 478 constexpr weak_ptr() noexcept; 479 template<class Y> weak_ptr(shared_ptr<Y> const& r) noexcept; 480 weak_ptr(weak_ptr const& r) noexcept; 481 template<class Y> weak_ptr(weak_ptr<Y> const& r) noexcept; 482 483 // destructor 484 ~weak_ptr(); 485 486 // assignment 487 weak_ptr& operator=(weak_ptr const& r) noexcept; 488 template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r) noexcept; 489 template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r) noexcept; 490 491 // modifiers 492 void swap(weak_ptr& r) noexcept; 493 void reset() noexcept; 494 495 // observers 496 long use_count() const noexcept; 497 bool expired() const noexcept; 498 shared_ptr<T> lock() const noexcept; 499 template<class U> bool owner_before(shared_ptr<U> const& b) const; 500 template<class U> bool owner_before(weak_ptr<U> const& b) const; 501}; 502 503// weak_ptr specialized algorithms: 504template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept; 505 506// class owner_less: 507template<class T> struct owner_less; 508 509template<class T> 510struct owner_less<shared_ptr<T>> 511 : binary_function<shared_ptr<T>, shared_ptr<T>, bool> 512{ 513 typedef bool result_type; 514 bool operator()(shared_ptr<T> const&, shared_ptr<T> const&) const; 515 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const; 516 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const; 517}; 518 519template<class T> 520struct owner_less<weak_ptr<T>> 521 : binary_function<weak_ptr<T>, weak_ptr<T>, bool> 522{ 523 typedef bool result_type; 524 bool operator()(weak_ptr<T> const&, weak_ptr<T> const&) const; 525 bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const; 526 bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const; 527}; 528 529template<class T> 530class enable_shared_from_this 531{ 532protected: 533 constexpr enable_shared_from_this() noexcept; 534 enable_shared_from_this(enable_shared_from_this const&) noexcept; 535 enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept; 536 ~enable_shared_from_this(); 537public: 538 shared_ptr<T> shared_from_this(); 539 shared_ptr<T const> shared_from_this() const; 540}; 541 542template<class T> 543 bool atomic_is_lock_free(const shared_ptr<T>* p); 544template<class T> 545 shared_ptr<T> atomic_load(const shared_ptr<T>* p); 546template<class T> 547 shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo); 548template<class T> 549 void atomic_store(shared_ptr<T>* p, shared_ptr<T> r); 550template<class T> 551 void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 552template<class T> 553 shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r); 554template<class T> 555 shared_ptr<T> 556 atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); 557template<class T> 558 bool 559 atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 560template<class T> 561 bool 562 atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); 563template<class T> 564 bool 565 atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 566 shared_ptr<T> w, memory_order success, 567 memory_order failure); 568template<class T> 569 bool 570 atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 571 shared_ptr<T> w, memory_order success, 572 memory_order failure); 573// Hash support 574template <class T> struct hash; 575template <class T, class D> struct hash<unique_ptr<T, D> >; 576template <class T> struct hash<shared_ptr<T> >; 577 578// Pointer safety 579enum class pointer_safety { relaxed, preferred, strict }; 580void declare_reachable(void *p); 581template <class T> T *undeclare_reachable(T *p); 582void declare_no_pointers(char *p, size_t n); 583void undeclare_no_pointers(char *p, size_t n); 584pointer_safety get_pointer_safety() noexcept; 585 586void* align(size_t alignment, size_t size, void*& ptr, size_t& space); 587 588} // std 589 590*/ 591 592#include <__config> 593#include <type_traits> 594#include <typeinfo> 595#include <cstddef> 596#include <cstdint> 597#include <new> 598#include <utility> 599#include <limits> 600#include <iterator> 601#include <__functional_base> 602#include <iosfwd> 603#include <tuple> 604#include <cstring> 605#if defined(_LIBCPP_NO_EXCEPTIONS) 606 #include <cassert> 607#endif 608 609#if __has_feature(cxx_atomic) 610# include <atomic> 611#endif 612 613#include <__undef_min_max> 614 615#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 616#pragma GCC system_header 617#endif 618 619_LIBCPP_BEGIN_NAMESPACE_STD 620 621// addressof moved to <__functional_base> 622 623template <class _Tp> class allocator; 624 625template <> 626class _LIBCPP_TYPE_VIS_ONLY allocator<void> 627{ 628public: 629 typedef void* pointer; 630 typedef const void* const_pointer; 631 typedef void value_type; 632 633 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 634}; 635 636template <> 637class _LIBCPP_TYPE_VIS_ONLY allocator<const void> 638{ 639public: 640 typedef const void* pointer; 641 typedef const void* const_pointer; 642 typedef const void value_type; 643 644 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 645}; 646 647// pointer_traits 648 649template <class _Tp> 650struct __has_element_type 651{ 652private: 653 struct __two {char __lx; char __lxx;}; 654 template <class _Up> static __two __test(...); 655 template <class _Up> static char __test(typename _Up::element_type* = 0); 656public: 657 static const bool value = sizeof(__test<_Tp>(0)) == 1; 658}; 659 660template <class _Ptr, bool = __has_element_type<_Ptr>::value> 661struct __pointer_traits_element_type; 662 663template <class _Ptr> 664struct __pointer_traits_element_type<_Ptr, true> 665{ 666 typedef typename _Ptr::element_type type; 667}; 668 669#ifndef _LIBCPP_HAS_NO_VARIADICS 670 671template <template <class, class...> class _Sp, class _Tp, class ..._Args> 672struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true> 673{ 674 typedef typename _Sp<_Tp, _Args...>::element_type type; 675}; 676 677template <template <class, class...> class _Sp, class _Tp, class ..._Args> 678struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false> 679{ 680 typedef _Tp type; 681}; 682 683#else // _LIBCPP_HAS_NO_VARIADICS 684 685template <template <class> class _Sp, class _Tp> 686struct __pointer_traits_element_type<_Sp<_Tp>, true> 687{ 688 typedef typename _Sp<_Tp>::element_type type; 689}; 690 691template <template <class> class _Sp, class _Tp> 692struct __pointer_traits_element_type<_Sp<_Tp>, false> 693{ 694 typedef _Tp type; 695}; 696 697template <template <class, class> class _Sp, class _Tp, class _A0> 698struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true> 699{ 700 typedef typename _Sp<_Tp, _A0>::element_type type; 701}; 702 703template <template <class, class> class _Sp, class _Tp, class _A0> 704struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false> 705{ 706 typedef _Tp type; 707}; 708 709template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 710struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true> 711{ 712 typedef typename _Sp<_Tp, _A0, _A1>::element_type type; 713}; 714 715template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> 716struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false> 717{ 718 typedef _Tp type; 719}; 720 721template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 722 class _A1, class _A2> 723struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true> 724{ 725 typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type; 726}; 727 728template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 729 class _A1, class _A2> 730struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false> 731{ 732 typedef _Tp type; 733}; 734 735#endif // _LIBCPP_HAS_NO_VARIADICS 736 737template <class _Tp> 738struct __has_difference_type 739{ 740private: 741 struct __two {char __lx; char __lxx;}; 742 template <class _Up> static __two __test(...); 743 template <class _Up> static char __test(typename _Up::difference_type* = 0); 744public: 745 static const bool value = sizeof(__test<_Tp>(0)) == 1; 746}; 747 748template <class _Ptr, bool = __has_difference_type<_Ptr>::value> 749struct __pointer_traits_difference_type 750{ 751 typedef ptrdiff_t type; 752}; 753 754template <class _Ptr> 755struct __pointer_traits_difference_type<_Ptr, true> 756{ 757 typedef typename _Ptr::difference_type type; 758}; 759 760template <class _Tp, class _Up> 761struct __has_rebind 762{ 763private: 764 struct __two {char __lx; char __lxx;}; 765 template <class _Xp> static __two __test(...); 766 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0); 767public: 768 static const bool value = sizeof(__test<_Tp>(0)) == 1; 769}; 770 771template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 772struct __pointer_traits_rebind 773{ 774#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 775 typedef typename _Tp::template rebind<_Up> type; 776#else 777 typedef typename _Tp::template rebind<_Up>::other type; 778#endif 779}; 780 781#ifndef _LIBCPP_HAS_NO_VARIADICS 782 783template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 784struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true> 785{ 786#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 787 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type; 788#else 789 typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type; 790#endif 791}; 792 793template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> 794struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false> 795{ 796 typedef _Sp<_Up, _Args...> type; 797}; 798 799#else // _LIBCPP_HAS_NO_VARIADICS 800 801template <template <class> class _Sp, class _Tp, class _Up> 802struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true> 803{ 804#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 805 typedef typename _Sp<_Tp>::template rebind<_Up> type; 806#else 807 typedef typename _Sp<_Tp>::template rebind<_Up>::other type; 808#endif 809}; 810 811template <template <class> class _Sp, class _Tp, class _Up> 812struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false> 813{ 814 typedef _Sp<_Up> type; 815}; 816 817template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 818struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true> 819{ 820#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 821 typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type; 822#else 823 typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type; 824#endif 825}; 826 827template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> 828struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false> 829{ 830 typedef _Sp<_Up, _A0> type; 831}; 832 833template <template <class, class, class> class _Sp, class _Tp, class _A0, 834 class _A1, class _Up> 835struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true> 836{ 837#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 838 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type; 839#else 840 typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type; 841#endif 842}; 843 844template <template <class, class, class> class _Sp, class _Tp, class _A0, 845 class _A1, class _Up> 846struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false> 847{ 848 typedef _Sp<_Up, _A0, _A1> type; 849}; 850 851template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 852 class _A1, class _A2, class _Up> 853struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true> 854{ 855#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 856 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type; 857#else 858 typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 859#endif 860}; 861 862template <template <class, class, class, class> class _Sp, class _Tp, class _A0, 863 class _A1, class _A2, class _Up> 864struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false> 865{ 866 typedef _Sp<_Up, _A0, _A1, _A2> type; 867}; 868 869#endif // _LIBCPP_HAS_NO_VARIADICS 870 871template <class _Ptr> 872struct _LIBCPP_TYPE_VIS_ONLY pointer_traits 873{ 874 typedef _Ptr pointer; 875 typedef typename __pointer_traits_element_type<pointer>::type element_type; 876 typedef typename __pointer_traits_difference_type<pointer>::type difference_type; 877 878#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 879 template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type; 880#else 881 template <class _Up> struct rebind 882 {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;}; 883#endif // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 884 885private: 886 struct __nat {}; 887public: 888 _LIBCPP_INLINE_VISIBILITY 889 static pointer pointer_to(typename conditional<is_void<element_type>::value, 890 __nat, element_type>::type& __r) 891 {return pointer::pointer_to(__r);} 892}; 893 894template <class _Tp> 895struct _LIBCPP_TYPE_VIS_ONLY pointer_traits<_Tp*> 896{ 897 typedef _Tp* pointer; 898 typedef _Tp element_type; 899 typedef ptrdiff_t difference_type; 900 901#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 902 template <class _Up> using rebind = _Up*; 903#else 904 template <class _Up> struct rebind {typedef _Up* other;}; 905#endif 906 907private: 908 struct __nat {}; 909public: 910 _LIBCPP_INLINE_VISIBILITY 911 static pointer pointer_to(typename conditional<is_void<element_type>::value, 912 __nat, element_type>::type& __r) _NOEXCEPT 913 {return _VSTD::addressof(__r);} 914}; 915 916// allocator_traits 917 918namespace __has_pointer_type_imp 919{ 920 template <class _Up> static __two __test(...); 921 template <class _Up> static char __test(typename _Up::pointer* = 0); 922} 923 924template <class _Tp> 925struct __has_pointer_type 926 : public integral_constant<bool, sizeof(__has_pointer_type_imp::__test<_Tp>(0)) == 1> 927{ 928}; 929 930namespace __pointer_type_imp 931{ 932 933template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value> 934struct __pointer_type 935{ 936 typedef typename _Dp::pointer type; 937}; 938 939template <class _Tp, class _Dp> 940struct __pointer_type<_Tp, _Dp, false> 941{ 942 typedef _Tp* type; 943}; 944 945} // __pointer_type_imp 946 947template <class _Tp, class _Dp> 948struct __pointer_type 949{ 950 typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type; 951}; 952 953template <class _Tp> 954struct __has_const_pointer 955{ 956private: 957 struct __two {char __lx; char __lxx;}; 958 template <class _Up> static __two __test(...); 959 template <class _Up> static char __test(typename _Up::const_pointer* = 0); 960public: 961 static const bool value = sizeof(__test<_Tp>(0)) == 1; 962}; 963 964template <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value> 965struct __const_pointer 966{ 967 typedef typename _Alloc::const_pointer type; 968}; 969 970template <class _Tp, class _Ptr, class _Alloc> 971struct __const_pointer<_Tp, _Ptr, _Alloc, false> 972{ 973#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 974 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp> type; 975#else 976 typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type; 977#endif 978}; 979 980template <class _Tp> 981struct __has_void_pointer 982{ 983private: 984 struct __two {char __lx; char __lxx;}; 985 template <class _Up> static __two __test(...); 986 template <class _Up> static char __test(typename _Up::void_pointer* = 0); 987public: 988 static const bool value = sizeof(__test<_Tp>(0)) == 1; 989}; 990 991template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value> 992struct __void_pointer 993{ 994 typedef typename _Alloc::void_pointer type; 995}; 996 997template <class _Ptr, class _Alloc> 998struct __void_pointer<_Ptr, _Alloc, false> 999{ 1000#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1001 typedef typename pointer_traits<_Ptr>::template rebind<void> type; 1002#else 1003 typedef typename pointer_traits<_Ptr>::template rebind<void>::other type; 1004#endif 1005}; 1006 1007template <class _Tp> 1008struct __has_const_void_pointer 1009{ 1010private: 1011 struct __two {char __lx; char __lxx;}; 1012 template <class _Up> static __two __test(...); 1013 template <class _Up> static char __test(typename _Up::const_void_pointer* = 0); 1014public: 1015 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1016}; 1017 1018template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value> 1019struct __const_void_pointer 1020{ 1021 typedef typename _Alloc::const_void_pointer type; 1022}; 1023 1024template <class _Ptr, class _Alloc> 1025struct __const_void_pointer<_Ptr, _Alloc, false> 1026{ 1027#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1028 typedef typename pointer_traits<_Ptr>::template rebind<const void> type; 1029#else 1030 typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type; 1031#endif 1032}; 1033 1034template <class _Tp> 1035inline _LIBCPP_INLINE_VISIBILITY 1036_Tp* 1037__to_raw_pointer(_Tp* __p) _NOEXCEPT 1038{ 1039 return __p; 1040} 1041 1042template <class _Pointer> 1043inline _LIBCPP_INLINE_VISIBILITY 1044typename pointer_traits<_Pointer>::element_type* 1045__to_raw_pointer(_Pointer __p) _NOEXCEPT 1046{ 1047 return _VSTD::__to_raw_pointer(__p.operator->()); 1048} 1049 1050template <class _Tp> 1051struct __has_size_type 1052{ 1053private: 1054 struct __two {char __lx; char __lxx;}; 1055 template <class _Up> static __two __test(...); 1056 template <class _Up> static char __test(typename _Up::size_type* = 0); 1057public: 1058 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1059}; 1060 1061template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value> 1062struct __size_type 1063{ 1064 typedef typename make_unsigned<_DiffType>::type type; 1065}; 1066 1067template <class _Alloc, class _DiffType> 1068struct __size_type<_Alloc, _DiffType, true> 1069{ 1070 typedef typename _Alloc::size_type type; 1071}; 1072 1073template <class _Tp> 1074struct __has_propagate_on_container_copy_assignment 1075{ 1076private: 1077 struct __two {char __lx; char __lxx;}; 1078 template <class _Up> static __two __test(...); 1079 template <class _Up> static char __test(typename _Up::propagate_on_container_copy_assignment* = 0); 1080public: 1081 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1082}; 1083 1084template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value> 1085struct __propagate_on_container_copy_assignment 1086{ 1087 typedef false_type type; 1088}; 1089 1090template <class _Alloc> 1091struct __propagate_on_container_copy_assignment<_Alloc, true> 1092{ 1093 typedef typename _Alloc::propagate_on_container_copy_assignment type; 1094}; 1095 1096template <class _Tp> 1097struct __has_propagate_on_container_move_assignment 1098{ 1099private: 1100 struct __two {char __lx; char __lxx;}; 1101 template <class _Up> static __two __test(...); 1102 template <class _Up> static char __test(typename _Up::propagate_on_container_move_assignment* = 0); 1103public: 1104 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1105}; 1106 1107template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value> 1108struct __propagate_on_container_move_assignment 1109{ 1110 typedef false_type type; 1111}; 1112 1113template <class _Alloc> 1114struct __propagate_on_container_move_assignment<_Alloc, true> 1115{ 1116 typedef typename _Alloc::propagate_on_container_move_assignment type; 1117}; 1118 1119template <class _Tp> 1120struct __has_propagate_on_container_swap 1121{ 1122private: 1123 struct __two {char __lx; char __lxx;}; 1124 template <class _Up> static __two __test(...); 1125 template <class _Up> static char __test(typename _Up::propagate_on_container_swap* = 0); 1126public: 1127 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1128}; 1129 1130template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value> 1131struct __propagate_on_container_swap 1132{ 1133 typedef false_type type; 1134}; 1135 1136template <class _Alloc> 1137struct __propagate_on_container_swap<_Alloc, true> 1138{ 1139 typedef typename _Alloc::propagate_on_container_swap type; 1140}; 1141 1142template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> 1143struct __has_rebind_other 1144{ 1145private: 1146 struct __two {char __lx; char __lxx;}; 1147 template <class _Xp> static __two __test(...); 1148 template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0); 1149public: 1150 static const bool value = sizeof(__test<_Tp>(0)) == 1; 1151}; 1152 1153template <class _Tp, class _Up> 1154struct __has_rebind_other<_Tp, _Up, false> 1155{ 1156 static const bool value = false; 1157}; 1158 1159template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value> 1160struct __allocator_traits_rebind 1161{ 1162 typedef typename _Tp::template rebind<_Up>::other type; 1163}; 1164 1165#ifndef _LIBCPP_HAS_NO_VARIADICS 1166 1167template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1168struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true> 1169{ 1170 typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type; 1171}; 1172 1173template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> 1174struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false> 1175{ 1176 typedef _Alloc<_Up, _Args...> type; 1177}; 1178 1179#else // _LIBCPP_HAS_NO_VARIADICS 1180 1181template <template <class> class _Alloc, class _Tp, class _Up> 1182struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true> 1183{ 1184 typedef typename _Alloc<_Tp>::template rebind<_Up>::other type; 1185}; 1186 1187template <template <class> class _Alloc, class _Tp, class _Up> 1188struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false> 1189{ 1190 typedef _Alloc<_Up> type; 1191}; 1192 1193template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1194struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true> 1195{ 1196 typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type; 1197}; 1198 1199template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> 1200struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false> 1201{ 1202 typedef _Alloc<_Up, _A0> type; 1203}; 1204 1205template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1206 class _A1, class _Up> 1207struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true> 1208{ 1209 typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type; 1210}; 1211 1212template <template <class, class, class> class _Alloc, class _Tp, class _A0, 1213 class _A1, class _Up> 1214struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false> 1215{ 1216 typedef _Alloc<_Up, _A0, _A1> type; 1217}; 1218 1219template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1220 class _A1, class _A2, class _Up> 1221struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true> 1222{ 1223 typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; 1224}; 1225 1226template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, 1227 class _A1, class _A2, class _Up> 1228struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false> 1229{ 1230 typedef _Alloc<_Up, _A0, _A1, _A2> type; 1231}; 1232 1233#endif // _LIBCPP_HAS_NO_VARIADICS 1234 1235#ifndef _LIBCPP_HAS_NO_ADVANCED_SFINAE 1236 1237template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1238auto 1239__has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1240 -> decltype(__a.allocate(__sz, __p), true_type()); 1241 1242template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1243auto 1244__has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) 1245 -> false_type; 1246 1247template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1248struct __has_allocate_hint 1249 : integral_constant<bool, 1250 is_same< 1251 decltype(__has_allocate_hint_test(declval<_Alloc>(), 1252 declval<_SizeType>(), 1253 declval<_ConstVoidPtr>())), 1254 true_type>::value> 1255{ 1256}; 1257 1258#else // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1259 1260template <class _Alloc, class _SizeType, class _ConstVoidPtr> 1261struct __has_allocate_hint 1262 : true_type 1263{ 1264}; 1265 1266#endif // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1267 1268#if !defined(_LIBCPP_HAS_NO_ADVANCED_SFINAE) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1269 1270template <class _Alloc, class _Tp, class ..._Args> 1271decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(), 1272 _VSTD::declval<_Args>()...), 1273 true_type()) 1274__has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args); 1275 1276template <class _Alloc, class _Pointer, class ..._Args> 1277false_type 1278__has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args); 1279 1280template <class _Alloc, class _Pointer, class ..._Args> 1281struct __has_construct 1282 : integral_constant<bool, 1283 is_same< 1284 decltype(__has_construct_test(declval<_Alloc>(), 1285 declval<_Pointer>(), 1286 declval<_Args>()...)), 1287 true_type>::value> 1288{ 1289}; 1290 1291template <class _Alloc, class _Pointer> 1292auto 1293__has_destroy_test(_Alloc&& __a, _Pointer&& __p) 1294 -> decltype(__a.destroy(__p), true_type()); 1295 1296template <class _Alloc, class _Pointer> 1297auto 1298__has_destroy_test(const _Alloc& __a, _Pointer&& __p) 1299 -> false_type; 1300 1301template <class _Alloc, class _Pointer> 1302struct __has_destroy 1303 : integral_constant<bool, 1304 is_same< 1305 decltype(__has_destroy_test(declval<_Alloc>(), 1306 declval<_Pointer>())), 1307 true_type>::value> 1308{ 1309}; 1310 1311template <class _Alloc> 1312auto 1313__has_max_size_test(_Alloc&& __a) 1314 -> decltype(__a.max_size(), true_type()); 1315 1316template <class _Alloc> 1317auto 1318__has_max_size_test(const volatile _Alloc& __a) 1319 -> false_type; 1320 1321template <class _Alloc> 1322struct __has_max_size 1323 : integral_constant<bool, 1324 is_same< 1325 decltype(__has_max_size_test(declval<_Alloc&>())), 1326 true_type>::value> 1327{ 1328}; 1329 1330template <class _Alloc> 1331auto 1332__has_select_on_container_copy_construction_test(_Alloc&& __a) 1333 -> decltype(__a.select_on_container_copy_construction(), true_type()); 1334 1335template <class _Alloc> 1336auto 1337__has_select_on_container_copy_construction_test(const volatile _Alloc& __a) 1338 -> false_type; 1339 1340template <class _Alloc> 1341struct __has_select_on_container_copy_construction 1342 : integral_constant<bool, 1343 is_same< 1344 decltype(__has_select_on_container_copy_construction_test(declval<_Alloc&>())), 1345 true_type>::value> 1346{ 1347}; 1348 1349#else // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1350 1351#ifndef _LIBCPP_HAS_NO_VARIADICS 1352 1353template <class _Alloc, class _Pointer, class ..._Args> 1354struct __has_construct 1355 : false_type 1356{ 1357}; 1358 1359#else // _LIBCPP_HAS_NO_VARIADICS 1360 1361template <class _Alloc, class _Pointer, class _Args> 1362struct __has_construct 1363 : false_type 1364{ 1365}; 1366 1367#endif // _LIBCPP_HAS_NO_VARIADICS 1368 1369template <class _Alloc, class _Pointer> 1370struct __has_destroy 1371 : false_type 1372{ 1373}; 1374 1375template <class _Alloc> 1376struct __has_max_size 1377 : true_type 1378{ 1379}; 1380 1381template <class _Alloc> 1382struct __has_select_on_container_copy_construction 1383 : false_type 1384{ 1385}; 1386 1387#endif // _LIBCPP_HAS_NO_ADVANCED_SFINAE 1388 1389template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value> 1390struct __alloc_traits_difference_type 1391{ 1392 typedef typename pointer_traits<_Ptr>::difference_type type; 1393}; 1394 1395template <class _Alloc, class _Ptr> 1396struct __alloc_traits_difference_type<_Alloc, _Ptr, true> 1397{ 1398 typedef typename _Alloc::difference_type type; 1399}; 1400 1401template <class _Alloc> 1402struct _LIBCPP_TYPE_VIS_ONLY allocator_traits 1403{ 1404 typedef _Alloc allocator_type; 1405 typedef typename allocator_type::value_type value_type; 1406 1407 typedef typename __pointer_type<value_type, allocator_type>::type pointer; 1408 typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer; 1409 typedef typename __void_pointer<pointer, allocator_type>::type void_pointer; 1410 typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer; 1411 1412 typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type; 1413 typedef typename __size_type<allocator_type, difference_type>::type size_type; 1414 1415 typedef typename __propagate_on_container_copy_assignment<allocator_type>::type 1416 propagate_on_container_copy_assignment; 1417 typedef typename __propagate_on_container_move_assignment<allocator_type>::type 1418 propagate_on_container_move_assignment; 1419 typedef typename __propagate_on_container_swap<allocator_type>::type 1420 propagate_on_container_swap; 1421 1422#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1423 template <class _Tp> using rebind_alloc = 1424 typename __allocator_traits_rebind<allocator_type, _Tp>::type; 1425 template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>; 1426#else // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1427 template <class _Tp> struct rebind_alloc 1428 {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;}; 1429 template <class _Tp> struct rebind_traits 1430 {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;}; 1431#endif // _LIBCPP_HAS_NO_TEMPLATE_ALIASES 1432 1433 _LIBCPP_INLINE_VISIBILITY 1434 static pointer allocate(allocator_type& __a, size_type __n) 1435 {return __a.allocate(__n);} 1436 _LIBCPP_INLINE_VISIBILITY 1437 static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint) 1438 {return allocate(__a, __n, __hint, 1439 __has_allocate_hint<allocator_type, size_type, const_void_pointer>());} 1440 1441 _LIBCPP_INLINE_VISIBILITY 1442 static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT 1443 {__a.deallocate(__p, __n);} 1444 1445#ifndef _LIBCPP_HAS_NO_VARIADICS 1446 template <class _Tp, class... _Args> 1447 _LIBCPP_INLINE_VISIBILITY 1448 static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args) 1449 {__construct(__has_construct<allocator_type, pointer, _Args...>(), 1450 __a, __p, _VSTD::forward<_Args>(__args)...);} 1451#else // _LIBCPP_HAS_NO_VARIADICS 1452 template <class _Tp> 1453 _LIBCPP_INLINE_VISIBILITY 1454 static void construct(allocator_type& __a, _Tp* __p) 1455 { 1456 ::new ((void*)__p) _Tp(); 1457 } 1458 template <class _Tp, class _A0> 1459 _LIBCPP_INLINE_VISIBILITY 1460 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0) 1461 { 1462 ::new ((void*)__p) _Tp(__a0); 1463 } 1464 template <class _Tp, class _A0, class _A1> 1465 _LIBCPP_INLINE_VISIBILITY 1466 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0, 1467 const _A1& __a1) 1468 { 1469 ::new ((void*)__p) _Tp(__a0, __a1); 1470 } 1471 template <class _Tp, class _A0, class _A1, class _A2> 1472 _LIBCPP_INLINE_VISIBILITY 1473 static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0, 1474 const _A1& __a1, const _A2& __a2) 1475 { 1476 ::new ((void*)__p) _Tp(__a0, __a1, __a2); 1477 } 1478#endif // _LIBCPP_HAS_NO_VARIADICS 1479 1480 template <class _Tp> 1481 _LIBCPP_INLINE_VISIBILITY 1482 static void destroy(allocator_type& __a, _Tp* __p) 1483 {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);} 1484 1485 _LIBCPP_INLINE_VISIBILITY 1486 static size_type max_size(const allocator_type& __a) _NOEXCEPT 1487 {return __max_size(__has_max_size<const allocator_type>(), __a);} 1488 1489 _LIBCPP_INLINE_VISIBILITY 1490 static allocator_type 1491 select_on_container_copy_construction(const allocator_type& __a) 1492 {return select_on_container_copy_construction( 1493 __has_select_on_container_copy_construction<const allocator_type>(), 1494 __a);} 1495 1496 template <class _Ptr> 1497 _LIBCPP_INLINE_VISIBILITY 1498 static 1499 void 1500 __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) 1501 { 1502 for (; __begin1 != __end1; ++__begin1, ++__begin2) 1503 construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1)); 1504 } 1505 1506 template <class _Tp> 1507 _LIBCPP_INLINE_VISIBILITY 1508 static 1509 typename enable_if 1510 < 1511 (is_same<allocator_type, allocator<_Tp> >::value 1512 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1513 is_trivially_move_constructible<_Tp>::value, 1514 void 1515 >::type 1516 __construct_forward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) 1517 { 1518 ptrdiff_t _Np = __end1 - __begin1; 1519 _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp)); 1520 __begin2 += _Np; 1521 } 1522 1523 template <class _Ptr> 1524 _LIBCPP_INLINE_VISIBILITY 1525 static 1526 void 1527 __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2) 1528 { 1529 while (__end1 != __begin1) 1530 { 1531 construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1)); 1532 --__end2; 1533 } 1534 } 1535 1536 template <class _Tp> 1537 _LIBCPP_INLINE_VISIBILITY 1538 static 1539 typename enable_if 1540 < 1541 (is_same<allocator_type, allocator<_Tp> >::value 1542 || !__has_construct<allocator_type, _Tp*, _Tp>::value) && 1543 is_trivially_move_constructible<_Tp>::value, 1544 void 1545 >::type 1546 __construct_backward(allocator_type& __a, _Tp* __begin1, _Tp* __end1, _Tp*& __end2) 1547 { 1548 ptrdiff_t _Np = __end1 - __begin1; 1549 __end2 -= _Np; 1550 _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp)); 1551 } 1552 1553private: 1554 1555 _LIBCPP_INLINE_VISIBILITY 1556 static pointer allocate(allocator_type& __a, size_type __n, 1557 const_void_pointer __hint, true_type) 1558 {return __a.allocate(__n, __hint);} 1559 _LIBCPP_INLINE_VISIBILITY 1560 static pointer allocate(allocator_type& __a, size_type __n, 1561 const_void_pointer, false_type) 1562 {return __a.allocate(__n);} 1563 1564#ifndef _LIBCPP_HAS_NO_VARIADICS 1565 template <class _Tp, class... _Args> 1566 _LIBCPP_INLINE_VISIBILITY 1567 static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args) 1568 {__a.construct(__p, _VSTD::forward<_Args>(__args)...);} 1569 template <class _Tp, class... _Args> 1570 _LIBCPP_INLINE_VISIBILITY 1571 static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args) 1572 { 1573 ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...); 1574 } 1575#endif // _LIBCPP_HAS_NO_VARIADICS 1576 1577 template <class _Tp> 1578 _LIBCPP_INLINE_VISIBILITY 1579 static void __destroy(true_type, allocator_type& __a, _Tp* __p) 1580 {__a.destroy(__p);} 1581 template <class _Tp> 1582 _LIBCPP_INLINE_VISIBILITY 1583 static void __destroy(false_type, allocator_type&, _Tp* __p) 1584 { 1585 __p->~_Tp(); 1586 } 1587 1588 _LIBCPP_INLINE_VISIBILITY 1589 static size_type __max_size(true_type, const allocator_type& __a) 1590 {return __a.max_size();} 1591 _LIBCPP_INLINE_VISIBILITY 1592 static size_type __max_size(false_type, const allocator_type&) 1593 {return numeric_limits<size_type>::max();} 1594 1595 _LIBCPP_INLINE_VISIBILITY 1596 static allocator_type 1597 select_on_container_copy_construction(true_type, const allocator_type& __a) 1598 {return __a.select_on_container_copy_construction();} 1599 _LIBCPP_INLINE_VISIBILITY 1600 static allocator_type 1601 select_on_container_copy_construction(false_type, const allocator_type& __a) 1602 {return __a;} 1603}; 1604 1605// allocator 1606 1607template <class _Tp> 1608class _LIBCPP_TYPE_VIS_ONLY allocator 1609{ 1610public: 1611 typedef size_t size_type; 1612 typedef ptrdiff_t difference_type; 1613 typedef _Tp* pointer; 1614 typedef const _Tp* const_pointer; 1615 typedef _Tp& reference; 1616 typedef const _Tp& const_reference; 1617 typedef _Tp value_type; 1618 1619 typedef true_type propagate_on_container_move_assignment; 1620 1621 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1622 1623 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1624 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1625 _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT 1626 {return _VSTD::addressof(__x);} 1627 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1628 {return _VSTD::addressof(__x);} 1629 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1630 {return static_cast<pointer>(::operator new(__n * sizeof(_Tp)));} 1631 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1632 {::operator delete((void*)__p);} 1633 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1634 {return size_type(~0) / sizeof(_Tp);} 1635#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1636 template <class _Up, class... _Args> 1637 _LIBCPP_INLINE_VISIBILITY 1638 void 1639 construct(_Up* __p, _Args&&... __args) 1640 { 1641 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1642 } 1643#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1644 _LIBCPP_INLINE_VISIBILITY 1645 void 1646 construct(pointer __p) 1647 { 1648 ::new((void*)__p) _Tp(); 1649 } 1650# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1651 1652 template <class _A0> 1653 _LIBCPP_INLINE_VISIBILITY 1654 void 1655 construct(pointer __p, _A0& __a0) 1656 { 1657 ::new((void*)__p) _Tp(__a0); 1658 } 1659 template <class _A0> 1660 _LIBCPP_INLINE_VISIBILITY 1661 void 1662 construct(pointer __p, const _A0& __a0) 1663 { 1664 ::new((void*)__p) _Tp(__a0); 1665 } 1666# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1667 template <class _A0, class _A1> 1668 _LIBCPP_INLINE_VISIBILITY 1669 void 1670 construct(pointer __p, _A0& __a0, _A1& __a1) 1671 { 1672 ::new((void*)__p) _Tp(__a0, __a1); 1673 } 1674 template <class _A0, class _A1> 1675 _LIBCPP_INLINE_VISIBILITY 1676 void 1677 construct(pointer __p, const _A0& __a0, _A1& __a1) 1678 { 1679 ::new((void*)__p) _Tp(__a0, __a1); 1680 } 1681 template <class _A0, class _A1> 1682 _LIBCPP_INLINE_VISIBILITY 1683 void 1684 construct(pointer __p, _A0& __a0, const _A1& __a1) 1685 { 1686 ::new((void*)__p) _Tp(__a0, __a1); 1687 } 1688 template <class _A0, class _A1> 1689 _LIBCPP_INLINE_VISIBILITY 1690 void 1691 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1692 { 1693 ::new((void*)__p) _Tp(__a0, __a1); 1694 } 1695#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1696 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1697}; 1698 1699template <class _Tp> 1700class _LIBCPP_TYPE_VIS_ONLY allocator<const _Tp> 1701{ 1702public: 1703 typedef size_t size_type; 1704 typedef ptrdiff_t difference_type; 1705 typedef const _Tp* pointer; 1706 typedef const _Tp* const_pointer; 1707 typedef const _Tp& reference; 1708 typedef const _Tp& const_reference; 1709 typedef const _Tp value_type; 1710 1711 typedef true_type propagate_on_container_move_assignment; 1712 1713 template <class _Up> struct rebind {typedef allocator<_Up> other;}; 1714 1715 _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} 1716 template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} 1717 _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT 1718 {return _VSTD::addressof(__x);} 1719 _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) 1720 {return static_cast<pointer>(::operator new(__n * sizeof(_Tp)));} 1721 _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT 1722 {::operator delete((void*)__p);} 1723 _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT 1724 {return size_type(~0) / sizeof(_Tp);} 1725#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1726 template <class _Up, class... _Args> 1727 _LIBCPP_INLINE_VISIBILITY 1728 void 1729 construct(_Up* __p, _Args&&... __args) 1730 { 1731 ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); 1732 } 1733#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1734 _LIBCPP_INLINE_VISIBILITY 1735 void 1736 construct(pointer __p) 1737 { 1738 ::new((void*)__p) _Tp(); 1739 } 1740# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1741 1742 template <class _A0> 1743 _LIBCPP_INLINE_VISIBILITY 1744 void 1745 construct(pointer __p, _A0& __a0) 1746 { 1747 ::new((void*)__p) _Tp(__a0); 1748 } 1749 template <class _A0> 1750 _LIBCPP_INLINE_VISIBILITY 1751 void 1752 construct(pointer __p, const _A0& __a0) 1753 { 1754 ::new((void*)__p) _Tp(__a0); 1755 } 1756# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1757 template <class _A0, class _A1> 1758 _LIBCPP_INLINE_VISIBILITY 1759 void 1760 construct(pointer __p, _A0& __a0, _A1& __a1) 1761 { 1762 ::new((void*)__p) _Tp(__a0, __a1); 1763 } 1764 template <class _A0, class _A1> 1765 _LIBCPP_INLINE_VISIBILITY 1766 void 1767 construct(pointer __p, const _A0& __a0, _A1& __a1) 1768 { 1769 ::new((void*)__p) _Tp(__a0, __a1); 1770 } 1771 template <class _A0, class _A1> 1772 _LIBCPP_INLINE_VISIBILITY 1773 void 1774 construct(pointer __p, _A0& __a0, const _A1& __a1) 1775 { 1776 ::new((void*)__p) _Tp(__a0, __a1); 1777 } 1778 template <class _A0, class _A1> 1779 _LIBCPP_INLINE_VISIBILITY 1780 void 1781 construct(pointer __p, const _A0& __a0, const _A1& __a1) 1782 { 1783 ::new((void*)__p) _Tp(__a0, __a1); 1784 } 1785#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) 1786 _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} 1787}; 1788 1789template <class _Tp, class _Up> 1790inline _LIBCPP_INLINE_VISIBILITY 1791bool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;} 1792 1793template <class _Tp, class _Up> 1794inline _LIBCPP_INLINE_VISIBILITY 1795bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;} 1796 1797template <class _OutputIterator, class _Tp> 1798class _LIBCPP_TYPE_VIS_ONLY raw_storage_iterator 1799 : public iterator<output_iterator_tag, 1800 _Tp, // purposefully not C++03 1801 ptrdiff_t, // purposefully not C++03 1802 _Tp*, // purposefully not C++03 1803 raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03 1804{ 1805private: 1806 _OutputIterator __x_; 1807public: 1808 _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} 1809 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;} 1810 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element) 1811 {::new(&*__x_) _Tp(__element); return *this;} 1812 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;} 1813 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int) 1814 {raw_storage_iterator __t(*this); ++__x_; return __t;} 1815}; 1816 1817template <class _Tp> 1818pair<_Tp*, ptrdiff_t> 1819get_temporary_buffer(ptrdiff_t __n) _NOEXCEPT 1820{ 1821 pair<_Tp*, ptrdiff_t> __r(0, 0); 1822 const ptrdiff_t __m = (~ptrdiff_t(0) ^ 1823 ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1))) 1824 / sizeof(_Tp); 1825 if (__n > __m) 1826 __n = __m; 1827 while (__n > 0) 1828 { 1829 __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow)); 1830 if (__r.first) 1831 { 1832 __r.second = __n; 1833 break; 1834 } 1835 __n /= 2; 1836 } 1837 return __r; 1838} 1839 1840template <class _Tp> 1841inline _LIBCPP_INLINE_VISIBILITY 1842void return_temporary_buffer(_Tp* __p) _NOEXCEPT {::operator delete(__p);} 1843 1844template <class _Tp> 1845struct auto_ptr_ref 1846{ 1847 _Tp* __ptr_; 1848}; 1849 1850template<class _Tp> 1851class _LIBCPP_TYPE_VIS_ONLY auto_ptr 1852{ 1853private: 1854 _Tp* __ptr_; 1855public: 1856 typedef _Tp element_type; 1857 1858 _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {} 1859 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {} 1860 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw() 1861 : __ptr_(__p.release()) {} 1862 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw() 1863 {reset(__p.release()); return *this;} 1864 template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw() 1865 {reset(__p.release()); return *this;} 1866 _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw() 1867 {reset(__p.__ptr_); return *this;} 1868 _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;} 1869 1870 _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw() 1871 {return *__ptr_;} 1872 _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;} 1873 _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;} 1874 _LIBCPP_INLINE_VISIBILITY _Tp* release() throw() 1875 { 1876 _Tp* __t = __ptr_; 1877 __ptr_ = 0; 1878 return __t; 1879 } 1880 _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw() 1881 { 1882 if (__ptr_ != __p) 1883 delete __ptr_; 1884 __ptr_ = __p; 1885 } 1886 1887 _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {} 1888 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw() 1889 {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;} 1890 template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw() 1891 {return auto_ptr<_Up>(release());} 1892}; 1893 1894template <> 1895class _LIBCPP_TYPE_VIS_ONLY auto_ptr<void> 1896{ 1897public: 1898 typedef void element_type; 1899}; 1900 1901template <class _T1, class _T2, bool = is_same<typename remove_cv<_T1>::type, 1902 typename remove_cv<_T2>::type>::value, 1903 bool = is_empty<_T1>::value 1904#if __has_feature(is_final) 1905 && !__is_final(_T1) 1906#endif 1907 , 1908 bool = is_empty<_T2>::value 1909#if __has_feature(is_final) 1910 && !__is_final(_T2) 1911#endif 1912 > 1913struct __libcpp_compressed_pair_switch; 1914 1915template <class _T1, class _T2, bool IsSame> 1916struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, false> {enum {value = 0};}; 1917 1918template <class _T1, class _T2, bool IsSame> 1919struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, true, false> {enum {value = 1};}; 1920 1921template <class _T1, class _T2, bool IsSame> 1922struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, true> {enum {value = 2};}; 1923 1924template <class _T1, class _T2> 1925struct __libcpp_compressed_pair_switch<_T1, _T2, false, true, true> {enum {value = 3};}; 1926 1927template <class _T1, class _T2> 1928struct __libcpp_compressed_pair_switch<_T1, _T2, true, true, true> {enum {value = 1};}; 1929 1930template <class _T1, class _T2, unsigned = __libcpp_compressed_pair_switch<_T1, _T2>::value> 1931class __libcpp_compressed_pair_imp; 1932 1933template <class _T1, class _T2> 1934class __libcpp_compressed_pair_imp<_T1, _T2, 0> 1935{ 1936private: 1937 _T1 __first_; 1938 _T2 __second_; 1939public: 1940 typedef _T1 _T1_param; 1941 typedef _T2 _T2_param; 1942 1943 typedef typename remove_reference<_T1>::type& _T1_reference; 1944 typedef typename remove_reference<_T2>::type& _T2_reference; 1945 1946 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 1947 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 1948 1949 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 1950 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 1951 : __first_(_VSTD::forward<_T1_param>(__t1)) {} 1952 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 1953 : __second_(_VSTD::forward<_T2_param>(__t2)) {} 1954 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 1955 : __first_(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 1956 1957#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1958 1959 _LIBCPP_INLINE_VISIBILITY 1960 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 1961 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 1962 is_nothrow_copy_constructible<_T2>::value) 1963 : __first_(__p.first()), 1964 __second_(__p.second()) {} 1965 1966 _LIBCPP_INLINE_VISIBILITY 1967 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 1968 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 1969 is_nothrow_copy_assignable<_T2>::value) 1970 { 1971 __first_ = __p.first(); 1972 __second_ = __p.second(); 1973 return *this; 1974 } 1975 1976 _LIBCPP_INLINE_VISIBILITY 1977 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 1978 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 1979 is_nothrow_move_constructible<_T2>::value) 1980 : __first_(_VSTD::forward<_T1>(__p.first())), 1981 __second_(_VSTD::forward<_T2>(__p.second())) {} 1982 1983 _LIBCPP_INLINE_VISIBILITY 1984 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 1985 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 1986 is_nothrow_move_assignable<_T2>::value) 1987 { 1988 __first_ = _VSTD::forward<_T1>(__p.first()); 1989 __second_ = _VSTD::forward<_T2>(__p.second()); 1990 return *this; 1991 } 1992 1993#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 1994 1995#ifndef _LIBCPP_HAS_NO_VARIADICS 1996 1997 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 1998 _LIBCPP_INLINE_VISIBILITY 1999 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2000 tuple<_Args1...> __first_args, 2001 tuple<_Args2...> __second_args, 2002 __tuple_indices<_I1...>, 2003 __tuple_indices<_I2...>) 2004 : __first_(_VSTD::forward<_Args1>(get<_I1>(__first_args))...), 2005 __second_(_VSTD::forward<_Args2>(get<_I2>(__second_args))...) 2006 {} 2007 2008#endif // _LIBCPP_HAS_NO_VARIADICS 2009 2010 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2011 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2012 2013 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2014 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2015 2016 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2017 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2018 __is_nothrow_swappable<_T1>::value) 2019 { 2020 using _VSTD::swap; 2021 swap(__first_, __x.__first_); 2022 swap(__second_, __x.__second_); 2023 } 2024}; 2025 2026template <class _T1, class _T2> 2027class __libcpp_compressed_pair_imp<_T1, _T2, 1> 2028 : private _T1 2029{ 2030private: 2031 _T2 __second_; 2032public: 2033 typedef _T1 _T1_param; 2034 typedef _T2 _T2_param; 2035 2036 typedef _T1& _T1_reference; 2037 typedef typename remove_reference<_T2>::type& _T2_reference; 2038 2039 typedef const _T1& _T1_const_reference; 2040 typedef const typename remove_reference<_T2>::type& _T2_const_reference; 2041 2042 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2043 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2044 : _T1(_VSTD::forward<_T1_param>(__t1)) {} 2045 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2046 : __second_(_VSTD::forward<_T2_param>(__t2)) {} 2047 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2048 : _T1(_VSTD::forward<_T1_param>(__t1)), __second_(_VSTD::forward<_T2_param>(__t2)) {} 2049 2050#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2051 2052 _LIBCPP_INLINE_VISIBILITY 2053 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2054 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2055 is_nothrow_copy_constructible<_T2>::value) 2056 : _T1(__p.first()), __second_(__p.second()) {} 2057 2058 _LIBCPP_INLINE_VISIBILITY 2059 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2060 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2061 is_nothrow_copy_assignable<_T2>::value) 2062 { 2063 _T1::operator=(__p.first()); 2064 __second_ = __p.second(); 2065 return *this; 2066 } 2067 2068 _LIBCPP_INLINE_VISIBILITY 2069 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2070 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2071 is_nothrow_move_constructible<_T2>::value) 2072 : _T1(_VSTD::move(__p.first())), __second_(_VSTD::forward<_T2>(__p.second())) {} 2073 2074 _LIBCPP_INLINE_VISIBILITY 2075 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2076 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2077 is_nothrow_move_assignable<_T2>::value) 2078 { 2079 _T1::operator=(_VSTD::move(__p.first())); 2080 __second_ = _VSTD::forward<_T2>(__p.second()); 2081 return *this; 2082 } 2083 2084#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2085 2086#ifndef _LIBCPP_HAS_NO_VARIADICS 2087 2088 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2089 _LIBCPP_INLINE_VISIBILITY 2090 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2091 tuple<_Args1...> __first_args, 2092 tuple<_Args2...> __second_args, 2093 __tuple_indices<_I1...>, 2094 __tuple_indices<_I2...>) 2095 : _T1(_VSTD::forward<_Args1>(get<_I1>(__first_args))...), 2096 __second_(_VSTD::forward<_Args2>(get<_I2>(__second_args))...) 2097 {} 2098 2099#endif // _LIBCPP_HAS_NO_VARIADICS 2100 2101 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2102 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2103 2104 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return __second_;} 2105 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return __second_;} 2106 2107 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2108 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2109 __is_nothrow_swappable<_T1>::value) 2110 { 2111 using _VSTD::swap; 2112 swap(__second_, __x.__second_); 2113 } 2114}; 2115 2116template <class _T1, class _T2> 2117class __libcpp_compressed_pair_imp<_T1, _T2, 2> 2118 : private _T2 2119{ 2120private: 2121 _T1 __first_; 2122public: 2123 typedef _T1 _T1_param; 2124 typedef _T2 _T2_param; 2125 2126 typedef typename remove_reference<_T1>::type& _T1_reference; 2127 typedef _T2& _T2_reference; 2128 2129 typedef const typename remove_reference<_T1>::type& _T1_const_reference; 2130 typedef const _T2& _T2_const_reference; 2131 2132 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2133 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2134 : __first_(_VSTD::forward<_T1_param>(__t1)) {} 2135 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2136 : _T2(_VSTD::forward<_T2_param>(__t2)) {} 2137 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2138 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2139 is_nothrow_move_constructible<_T2>::value) 2140 : _T2(_VSTD::forward<_T2_param>(__t2)), __first_(_VSTD::forward<_T1_param>(__t1)) {} 2141 2142#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2143 2144 _LIBCPP_INLINE_VISIBILITY 2145 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2146 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2147 is_nothrow_copy_constructible<_T2>::value) 2148 : _T2(__p.second()), __first_(__p.first()) {} 2149 2150 _LIBCPP_INLINE_VISIBILITY 2151 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2152 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2153 is_nothrow_copy_assignable<_T2>::value) 2154 { 2155 _T2::operator=(__p.second()); 2156 __first_ = __p.first(); 2157 return *this; 2158 } 2159 2160 _LIBCPP_INLINE_VISIBILITY 2161 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2162 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2163 is_nothrow_move_constructible<_T2>::value) 2164 : _T2(_VSTD::forward<_T2>(__p.second())), __first_(_VSTD::move(__p.first())) {} 2165 2166 _LIBCPP_INLINE_VISIBILITY 2167 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2168 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2169 is_nothrow_move_assignable<_T2>::value) 2170 { 2171 _T2::operator=(_VSTD::forward<_T2>(__p.second())); 2172 __first_ = _VSTD::move(__p.first()); 2173 return *this; 2174 } 2175 2176#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2177 2178#ifndef _LIBCPP_HAS_NO_VARIADICS 2179 2180 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2181 _LIBCPP_INLINE_VISIBILITY 2182 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2183 tuple<_Args1...> __first_args, 2184 tuple<_Args2...> __second_args, 2185 __tuple_indices<_I1...>, 2186 __tuple_indices<_I2...>) 2187 : _T2(_VSTD::forward<_Args2>(get<_I2>(__second_args))...), 2188 __first_(_VSTD::forward<_Args1>(get<_I1>(__first_args))...) 2189 2190 {} 2191 2192#endif // _LIBCPP_HAS_NO_VARIADICS 2193 2194 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return __first_;} 2195 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return __first_;} 2196 2197 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2198 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2199 2200 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) 2201 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2202 __is_nothrow_swappable<_T1>::value) 2203 { 2204 using _VSTD::swap; 2205 swap(__first_, __x.__first_); 2206 } 2207}; 2208 2209template <class _T1, class _T2> 2210class __libcpp_compressed_pair_imp<_T1, _T2, 3> 2211 : private _T1, 2212 private _T2 2213{ 2214public: 2215 typedef _T1 _T1_param; 2216 typedef _T2 _T2_param; 2217 2218 typedef _T1& _T1_reference; 2219 typedef _T2& _T2_reference; 2220 2221 typedef const _T1& _T1_const_reference; 2222 typedef const _T2& _T2_const_reference; 2223 2224 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} 2225 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) 2226 : _T1(_VSTD::forward<_T1_param>(__t1)) {} 2227 _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) 2228 : _T2(_VSTD::forward<_T2_param>(__t2)) {} 2229 _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) 2230 : _T1(_VSTD::forward<_T1_param>(__t1)), _T2(_VSTD::forward<_T2_param>(__t2)) {} 2231 2232#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2233 2234 _LIBCPP_INLINE_VISIBILITY 2235 __libcpp_compressed_pair_imp(const __libcpp_compressed_pair_imp& __p) 2236 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2237 is_nothrow_copy_constructible<_T2>::value) 2238 : _T1(__p.first()), _T2(__p.second()) {} 2239 2240 _LIBCPP_INLINE_VISIBILITY 2241 __libcpp_compressed_pair_imp& operator=(const __libcpp_compressed_pair_imp& __p) 2242 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2243 is_nothrow_copy_assignable<_T2>::value) 2244 { 2245 _T1::operator=(__p.first()); 2246 _T2::operator=(__p.second()); 2247 return *this; 2248 } 2249 2250 _LIBCPP_INLINE_VISIBILITY 2251 __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) 2252 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2253 is_nothrow_move_constructible<_T2>::value) 2254 : _T1(_VSTD::move(__p.first())), _T2(_VSTD::move(__p.second())) {} 2255 2256 _LIBCPP_INLINE_VISIBILITY 2257 __libcpp_compressed_pair_imp& operator=(__libcpp_compressed_pair_imp&& __p) 2258 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2259 is_nothrow_move_assignable<_T2>::value) 2260 { 2261 _T1::operator=(_VSTD::move(__p.first())); 2262 _T2::operator=(_VSTD::move(__p.second())); 2263 return *this; 2264 } 2265 2266#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2267 2268#ifndef _LIBCPP_HAS_NO_VARIADICS 2269 2270 template <class... _Args1, class... _Args2, size_t... _I1, size_t... _I2> 2271 _LIBCPP_INLINE_VISIBILITY 2272 __libcpp_compressed_pair_imp(piecewise_construct_t __pc, 2273 tuple<_Args1...> __first_args, 2274 tuple<_Args2...> __second_args, 2275 __tuple_indices<_I1...>, 2276 __tuple_indices<_I2...>) 2277 : _T1(_VSTD::forward<_Args1>(get<_I1>(__first_args))...), 2278 _T2(_VSTD::forward<_Args2>(get<_I2>(__second_args))...) 2279 {} 2280 2281#endif // _LIBCPP_HAS_NO_VARIADICS 2282 2283 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return *this;} 2284 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return *this;} 2285 2286 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return *this;} 2287 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return *this;} 2288 2289 _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp&) 2290 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2291 __is_nothrow_swappable<_T1>::value) 2292 { 2293 } 2294}; 2295 2296template <class _T1, class _T2> 2297class __compressed_pair 2298 : private __libcpp_compressed_pair_imp<_T1, _T2> 2299{ 2300 typedef __libcpp_compressed_pair_imp<_T1, _T2> base; 2301public: 2302 typedef typename base::_T1_param _T1_param; 2303 typedef typename base::_T2_param _T2_param; 2304 2305 typedef typename base::_T1_reference _T1_reference; 2306 typedef typename base::_T2_reference _T2_reference; 2307 2308 typedef typename base::_T1_const_reference _T1_const_reference; 2309 typedef typename base::_T2_const_reference _T2_const_reference; 2310 2311 _LIBCPP_INLINE_VISIBILITY __compressed_pair() {} 2312 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T1_param __t1) 2313 : base(_VSTD::forward<_T1_param>(__t1)) {} 2314 _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T2_param __t2) 2315 : base(_VSTD::forward<_T2_param>(__t2)) {} 2316 _LIBCPP_INLINE_VISIBILITY __compressed_pair(_T1_param __t1, _T2_param __t2) 2317 : base(_VSTD::forward<_T1_param>(__t1), _VSTD::forward<_T2_param>(__t2)) {} 2318 2319#if defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2320 2321 _LIBCPP_INLINE_VISIBILITY 2322 __compressed_pair(const __compressed_pair& __p) 2323 _NOEXCEPT_(is_nothrow_copy_constructible<_T1>::value && 2324 is_nothrow_copy_constructible<_T2>::value) 2325 : base(__p) {} 2326 2327 _LIBCPP_INLINE_VISIBILITY 2328 __compressed_pair& operator=(const __compressed_pair& __p) 2329 _NOEXCEPT_(is_nothrow_copy_assignable<_T1>::value && 2330 is_nothrow_copy_assignable<_T2>::value) 2331 { 2332 base::operator=(__p); 2333 return *this; 2334 } 2335 2336 _LIBCPP_INLINE_VISIBILITY 2337 __compressed_pair(__compressed_pair&& __p) 2338 _NOEXCEPT_(is_nothrow_move_constructible<_T1>::value && 2339 is_nothrow_move_constructible<_T2>::value) 2340 : base(_VSTD::move(__p)) {} 2341 2342 _LIBCPP_INLINE_VISIBILITY 2343 __compressed_pair& operator=(__compressed_pair&& __p) 2344 _NOEXCEPT_(is_nothrow_move_assignable<_T1>::value && 2345 is_nothrow_move_assignable<_T2>::value) 2346 { 2347 base::operator=(_VSTD::move(__p)); 2348 return *this; 2349 } 2350 2351#endif // defined(_LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS) && !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) 2352 2353#ifndef _LIBCPP_HAS_NO_VARIADICS 2354 2355 template <class... _Args1, class... _Args2> 2356 _LIBCPP_INLINE_VISIBILITY 2357 __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args, 2358 tuple<_Args2...> __second_args) 2359 : base(__pc, _VSTD::move(__first_args), _VSTD::move(__second_args), 2360 typename __make_tuple_indices<sizeof...(_Args1)>::type(), 2361 typename __make_tuple_indices<sizeof...(_Args2) >::type()) 2362 {} 2363 2364#endif // _LIBCPP_HAS_NO_VARIADICS 2365 2366 _LIBCPP_INLINE_VISIBILITY _T1_reference first() _NOEXCEPT {return base::first();} 2367 _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const _NOEXCEPT {return base::first();} 2368 2369 _LIBCPP_INLINE_VISIBILITY _T2_reference second() _NOEXCEPT {return base::second();} 2370 _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const _NOEXCEPT {return base::second();} 2371 2372 _LIBCPP_INLINE_VISIBILITY void swap(__compressed_pair& __x) 2373 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2374 __is_nothrow_swappable<_T1>::value) 2375 {base::swap(__x);} 2376}; 2377 2378template <class _T1, class _T2> 2379inline _LIBCPP_INLINE_VISIBILITY 2380void 2381swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y) 2382 _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && 2383 __is_nothrow_swappable<_T1>::value) 2384 {__x.swap(__y);} 2385 2386// __same_or_less_cv_qualified 2387 2388template <class _Ptr1, class _Ptr2, 2389 bool = is_same<typename remove_cv<typename pointer_traits<_Ptr1>::element_type>::type, 2390 typename remove_cv<typename pointer_traits<_Ptr2>::element_type>::type 2391 >::value 2392 > 2393struct __same_or_less_cv_qualified_imp 2394 : is_convertible<_Ptr1, _Ptr2> {}; 2395 2396template <class _Ptr1, class _Ptr2> 2397struct __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2, false> 2398 : false_type {}; 2399 2400template <class _Ptr1, class _Ptr2, bool = is_scalar<_Ptr1>::value && 2401 !is_pointer<_Ptr1>::value> 2402struct __same_or_less_cv_qualified 2403 : __same_or_less_cv_qualified_imp<_Ptr1, _Ptr2> {}; 2404 2405template <class _Ptr1, class _Ptr2> 2406struct __same_or_less_cv_qualified<_Ptr1, _Ptr2, true> 2407 : false_type {}; 2408 2409// default_delete 2410 2411template <class _Tp> 2412struct _LIBCPP_TYPE_VIS_ONLY default_delete 2413{ 2414#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2415 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2416#else 2417 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2418#endif 2419 template <class _Up> 2420 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up>&, 2421 typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2422 _LIBCPP_INLINE_VISIBILITY void operator() (_Tp* __ptr) const _NOEXCEPT 2423 { 2424 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2425 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type"); 2426 delete __ptr; 2427 } 2428}; 2429 2430template <class _Tp> 2431struct _LIBCPP_TYPE_VIS_ONLY default_delete<_Tp[]> 2432{ 2433public: 2434#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 2435 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT = default; 2436#else 2437 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR default_delete() _NOEXCEPT {} 2438#endif 2439 template <class _Up> 2440 _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up[]>&, 2441 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) _NOEXCEPT {} 2442 template <class _Up> 2443 _LIBCPP_INLINE_VISIBILITY 2444 void operator() (_Up* __ptr, 2445 typename enable_if<__same_or_less_cv_qualified<_Up*, _Tp*>::value>::type* = 0) const _NOEXCEPT 2446 { 2447 static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); 2448 static_assert(!is_void<_Tp>::value, "default_delete can not delete incomplete type"); 2449 delete [] __ptr; 2450 } 2451}; 2452 2453template <class _Tp, class _Dp = default_delete<_Tp> > 2454class _LIBCPP_TYPE_VIS_ONLY unique_ptr 2455{ 2456public: 2457 typedef _Tp element_type; 2458 typedef _Dp deleter_type; 2459 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2460private: 2461 __compressed_pair<pointer, deleter_type> __ptr_; 2462 2463#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2464 unique_ptr(unique_ptr&); 2465 template <class _Up, class _Ep> 2466 unique_ptr(unique_ptr<_Up, _Ep>&); 2467 unique_ptr& operator=(unique_ptr&); 2468 template <class _Up, class _Ep> 2469 unique_ptr& operator=(unique_ptr<_Up, _Ep>&); 2470#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2471 2472 struct __nat {int __for_bool_;}; 2473 2474 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2475 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2476public: 2477 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2478 : __ptr_(pointer()) 2479 { 2480 static_assert(!is_pointer<deleter_type>::value, 2481 "unique_ptr constructed with null function pointer deleter"); 2482 } 2483 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2484 : __ptr_(pointer()) 2485 { 2486 static_assert(!is_pointer<deleter_type>::value, 2487 "unique_ptr constructed with null function pointer deleter"); 2488 } 2489 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) _NOEXCEPT 2490 : __ptr_(_VSTD::move(__p)) 2491 { 2492 static_assert(!is_pointer<deleter_type>::value, 2493 "unique_ptr constructed with null function pointer deleter"); 2494 } 2495 2496#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2497 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename conditional< 2498 is_reference<deleter_type>::value, 2499 deleter_type, 2500 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2501 _NOEXCEPT 2502 : __ptr_(__p, __d) {} 2503 2504 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename remove_reference<deleter_type>::type&& __d) 2505 _NOEXCEPT 2506 : __ptr_(__p, _VSTD::move(__d)) 2507 { 2508 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2509 } 2510 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2511 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2512 template <class _Up, class _Ep> 2513 _LIBCPP_INLINE_VISIBILITY 2514 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2515 typename enable_if 2516 < 2517 !is_array<_Up>::value && 2518 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2519 is_convertible<_Ep, deleter_type>::value && 2520 ( 2521 !is_reference<deleter_type>::value || 2522 is_same<deleter_type, _Ep>::value 2523 ), 2524 __nat 2525 >::type = __nat()) _NOEXCEPT 2526 : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {} 2527 2528 template <class _Up> 2529 _LIBCPP_INLINE_VISIBILITY unique_ptr(auto_ptr<_Up>&& __p, 2530 typename enable_if< 2531 is_convertible<_Up*, _Tp*>::value && 2532 is_same<_Dp, default_delete<_Tp> >::value, 2533 __nat 2534 >::type = __nat()) _NOEXCEPT 2535 : __ptr_(__p.release()) 2536 { 2537 } 2538 2539 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2540 { 2541 reset(__u.release()); 2542 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2543 return *this; 2544 } 2545 2546 template <class _Up, class _Ep> 2547 _LIBCPP_INLINE_VISIBILITY 2548 typename enable_if 2549 < 2550 !is_array<_Up>::value && 2551 is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2552 is_assignable<deleter_type&, _Ep&&>::value, 2553 unique_ptr& 2554 >::type 2555 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2556 { 2557 reset(__u.release()); 2558 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2559 return *this; 2560 } 2561#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2562 2563 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2564 { 2565 return __rv<unique_ptr>(*this); 2566 } 2567 2568 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2569 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2570 2571 template <class _Up, class _Ep> 2572 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr<_Up, _Ep> __u) 2573 { 2574 reset(__u.release()); 2575 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2576 return *this; 2577 } 2578 2579 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2580 : __ptr_(_VSTD::move(__p), _VSTD::move(__d)) {} 2581 2582 template <class _Up> 2583 _LIBCPP_INLINE_VISIBILITY 2584 typename enable_if< 2585 is_convertible<_Up*, _Tp*>::value && 2586 is_same<_Dp, default_delete<_Tp> >::value, 2587 unique_ptr& 2588 >::type 2589 operator=(auto_ptr<_Up> __p) 2590 {reset(__p.release()); return *this;} 2591 2592#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2593 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2594 2595 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2596 { 2597 reset(); 2598 return *this; 2599 } 2600 2601 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator*() const 2602 {return *__ptr_.first();} 2603 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT {return __ptr_.first();} 2604 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2605 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2606 {return __ptr_.second();} 2607 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2608 {return __ptr_.second();} 2609 _LIBCPP_INLINE_VISIBILITY 2610 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2611 {return __ptr_.first() != nullptr;} 2612 2613 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2614 { 2615 pointer __t = __ptr_.first(); 2616 __ptr_.first() = pointer(); 2617 return __t; 2618 } 2619 2620 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) _NOEXCEPT 2621 { 2622 pointer __tmp = __ptr_.first(); 2623 __ptr_.first() = __p; 2624 if (__tmp) 2625 __ptr_.second()(__tmp); 2626 } 2627 2628 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) _NOEXCEPT 2629 {__ptr_.swap(__u.__ptr_);} 2630}; 2631 2632template <class _Tp, class _Dp> 2633class _LIBCPP_TYPE_VIS_ONLY unique_ptr<_Tp[], _Dp> 2634{ 2635public: 2636 typedef _Tp element_type; 2637 typedef _Dp deleter_type; 2638 typedef typename __pointer_type<_Tp, deleter_type>::type pointer; 2639private: 2640 __compressed_pair<pointer, deleter_type> __ptr_; 2641 2642#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2643 unique_ptr(unique_ptr&); 2644 template <class _Up> 2645 unique_ptr(unique_ptr<_Up>&); 2646 unique_ptr& operator=(unique_ptr&); 2647 template <class _Up> 2648 unique_ptr& operator=(unique_ptr<_Up>&); 2649#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2650 2651 struct __nat {int __for_bool_;}; 2652 2653 typedef typename remove_reference<deleter_type>::type& _Dp_reference; 2654 typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; 2655public: 2656 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr() _NOEXCEPT 2657 : __ptr_(pointer()) 2658 { 2659 static_assert(!is_pointer<deleter_type>::value, 2660 "unique_ptr constructed with null function pointer deleter"); 2661 } 2662 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unique_ptr(nullptr_t) _NOEXCEPT 2663 : __ptr_(pointer()) 2664 { 2665 static_assert(!is_pointer<deleter_type>::value, 2666 "unique_ptr constructed with null function pointer deleter"); 2667 } 2668#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2669 template <class _Pp> 2670 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(_Pp __p, 2671 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) _NOEXCEPT 2672 : __ptr_(__p) 2673 { 2674 static_assert(!is_pointer<deleter_type>::value, 2675 "unique_ptr constructed with null function pointer deleter"); 2676 } 2677 2678 template <class _Pp> 2679 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, typename conditional< 2680 is_reference<deleter_type>::value, 2681 deleter_type, 2682 typename add_lvalue_reference<const deleter_type>::type>::type __d, 2683 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2684 _NOEXCEPT 2685 : __ptr_(__p, __d) {} 2686 2687 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename conditional< 2688 is_reference<deleter_type>::value, 2689 deleter_type, 2690 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2691 _NOEXCEPT 2692 : __ptr_(pointer(), __d) {} 2693 2694 template <class _Pp> 2695 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, 2696 typename remove_reference<deleter_type>::type&& __d, 2697 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, __nat>::type = __nat()) 2698 _NOEXCEPT 2699 : __ptr_(__p, _VSTD::move(__d)) 2700 { 2701 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2702 } 2703 2704 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename remove_reference<deleter_type>::type&& __d) 2705 _NOEXCEPT 2706 : __ptr_(pointer(), _VSTD::move(__d)) 2707 { 2708 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2709 } 2710 2711 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2712 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2713 2714 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2715 { 2716 reset(__u.release()); 2717 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2718 return *this; 2719 } 2720 2721 template <class _Up, class _Ep> 2722 _LIBCPP_INLINE_VISIBILITY 2723 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2724 typename enable_if 2725 < 2726 is_array<_Up>::value && 2727 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value 2728 && is_convertible<_Ep, deleter_type>::value && 2729 ( 2730 !is_reference<deleter_type>::value || 2731 is_same<deleter_type, _Ep>::value 2732 ), 2733 __nat 2734 >::type = __nat() 2735 ) _NOEXCEPT 2736 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2737 2738 2739 template <class _Up, class _Ep> 2740 _LIBCPP_INLINE_VISIBILITY 2741 typename enable_if 2742 < 2743 is_array<_Up>::value && 2744 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2745 is_assignable<deleter_type&, _Ep&&>::value, 2746 unique_ptr& 2747 >::type 2748 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2749 { 2750 reset(__u.release()); 2751 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2752 return *this; 2753 } 2754#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2755 2756 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) 2757 : __ptr_(__p) 2758 { 2759 static_assert(!is_pointer<deleter_type>::value, 2760 "unique_ptr constructed with null function pointer deleter"); 2761 } 2762 2763 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2764 : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {} 2765 2766 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, deleter_type __d) 2767 : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {} 2768 2769 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2770 { 2771 return __rv<unique_ptr>(*this); 2772 } 2773 2774 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2775 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2776 2777 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(__rv<unique_ptr> __u) 2778 { 2779 reset(__u->release()); 2780 __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter()); 2781 return *this; 2782 } 2783 2784#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2785 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2786 2787 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2788 { 2789 reset(); 2790 return *this; 2791 } 2792 2793 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator[](size_t __i) const 2794 {return __ptr_.first()[__i];} 2795 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2796 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2797 {return __ptr_.second();} 2798 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2799 {return __ptr_.second();} 2800 _LIBCPP_INLINE_VISIBILITY 2801 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2802 {return __ptr_.first() != nullptr;} 2803 2804 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2805 { 2806 pointer __t = __ptr_.first(); 2807 __ptr_.first() = pointer(); 2808 return __t; 2809 } 2810 2811#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2812 template <class _Pp> 2813 _LIBCPP_INLINE_VISIBILITY 2814 typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value, void>::type 2815 reset(_Pp __p) _NOEXCEPT 2816 { 2817 pointer __tmp = __ptr_.first(); 2818 __ptr_.first() = __p; 2819 if (__tmp) 2820 __ptr_.second()(__tmp); 2821 } 2822 _LIBCPP_INLINE_VISIBILITY void reset(nullptr_t) _NOEXCEPT 2823 { 2824 pointer __tmp = __ptr_.first(); 2825 __ptr_.first() = nullptr; 2826 if (__tmp) 2827 __ptr_.second()(__tmp); 2828 } 2829 _LIBCPP_INLINE_VISIBILITY void reset() _NOEXCEPT 2830 { 2831 pointer __tmp = __ptr_.first(); 2832 __ptr_.first() = nullptr; 2833 if (__tmp) 2834 __ptr_.second()(__tmp); 2835 } 2836#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2837 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) 2838 { 2839 pointer __tmp = __ptr_.first(); 2840 __ptr_.first() = __p; 2841 if (__tmp) 2842 __ptr_.second()(__tmp); 2843 } 2844#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2845 2846 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);} 2847private: 2848 2849#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2850 template <class _Up> 2851 explicit unique_ptr(_Up); 2852 template <class _Up> 2853 unique_ptr(_Up __u, 2854 typename conditional< 2855 is_reference<deleter_type>::value, 2856 deleter_type, 2857 typename add_lvalue_reference<const deleter_type>::type>::type, 2858 typename enable_if 2859 < 2860 is_convertible<_Up, pointer>::value, 2861 __nat 2862 >::type = __nat()); 2863#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2864}; 2865 2866template <class _Tp, class _Dp> 2867inline _LIBCPP_INLINE_VISIBILITY 2868void 2869swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} 2870 2871template <class _T1, class _D1, class _T2, class _D2> 2872inline _LIBCPP_INLINE_VISIBILITY 2873bool 2874operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} 2875 2876template <class _T1, class _D1, class _T2, class _D2> 2877inline _LIBCPP_INLINE_VISIBILITY 2878bool 2879operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} 2880 2881template <class _T1, class _D1, class _T2, class _D2> 2882inline _LIBCPP_INLINE_VISIBILITY 2883bool 2884operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) 2885{ 2886 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2887 typedef typename unique_ptr<_T2, _D2>::pointer _P2; 2888 typedef typename common_type<_P1, _P2>::type _V; 2889 return less<_V>()(__x.get(), __y.get()); 2890} 2891 2892template <class _T1, class _D1, class _T2, class _D2> 2893inline _LIBCPP_INLINE_VISIBILITY 2894bool 2895operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} 2896 2897template <class _T1, class _D1, class _T2, class _D2> 2898inline _LIBCPP_INLINE_VISIBILITY 2899bool 2900operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} 2901 2902template <class _T1, class _D1, class _T2, class _D2> 2903inline _LIBCPP_INLINE_VISIBILITY 2904bool 2905operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} 2906 2907template <class _T1, class _D1> 2908inline _LIBCPP_INLINE_VISIBILITY 2909bool 2910operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2911{ 2912 return !__x; 2913} 2914 2915template <class _T1, class _D1> 2916inline _LIBCPP_INLINE_VISIBILITY 2917bool 2918operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2919{ 2920 return !__x; 2921} 2922 2923template <class _T1, class _D1> 2924inline _LIBCPP_INLINE_VISIBILITY 2925bool 2926operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2927{ 2928 return static_cast<bool>(__x); 2929} 2930 2931template <class _T1, class _D1> 2932inline _LIBCPP_INLINE_VISIBILITY 2933bool 2934operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2935{ 2936 return static_cast<bool>(__x); 2937} 2938 2939template <class _T1, class _D1> 2940inline _LIBCPP_INLINE_VISIBILITY 2941bool 2942operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2943{ 2944 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2945 return less<_P1>()(__x.get(), nullptr); 2946} 2947 2948template <class _T1, class _D1> 2949inline _LIBCPP_INLINE_VISIBILITY 2950bool 2951operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2952{ 2953 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2954 return less<_P1>()(nullptr, __x.get()); 2955} 2956 2957template <class _T1, class _D1> 2958inline _LIBCPP_INLINE_VISIBILITY 2959bool 2960operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2961{ 2962 return nullptr < __x; 2963} 2964 2965template <class _T1, class _D1> 2966inline _LIBCPP_INLINE_VISIBILITY 2967bool 2968operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2969{ 2970 return __x < nullptr; 2971} 2972 2973template <class _T1, class _D1> 2974inline _LIBCPP_INLINE_VISIBILITY 2975bool 2976operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2977{ 2978 return !(nullptr < __x); 2979} 2980 2981template <class _T1, class _D1> 2982inline _LIBCPP_INLINE_VISIBILITY 2983bool 2984operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2985{ 2986 return !(__x < nullptr); 2987} 2988 2989template <class _T1, class _D1> 2990inline _LIBCPP_INLINE_VISIBILITY 2991bool 2992operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2993{ 2994 return !(__x < nullptr); 2995} 2996 2997template <class _T1, class _D1> 2998inline _LIBCPP_INLINE_VISIBILITY 2999bool 3000operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3001{ 3002 return !(nullptr < __x); 3003} 3004 3005#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3006 3007template <class _Tp, class _Dp> 3008inline _LIBCPP_INLINE_VISIBILITY 3009unique_ptr<_Tp, _Dp> 3010move(unique_ptr<_Tp, _Dp>& __t) 3011{ 3012 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t)); 3013} 3014 3015#endif 3016 3017#if _LIBCPP_STD_VER > 11 3018 3019template<class _Tp> 3020struct __unique_if 3021{ 3022 typedef unique_ptr<_Tp> __unique_single; 3023}; 3024 3025template<class _Tp> 3026struct __unique_if<_Tp[]> 3027{ 3028 typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; 3029}; 3030 3031template<class _Tp, size_t _Np> 3032struct __unique_if<_Tp[_Np]> 3033{ 3034 typedef void __unique_array_known_bound; 3035}; 3036 3037template<class _Tp, class... _Args> 3038inline _LIBCPP_INLINE_VISIBILITY 3039typename __unique_if<_Tp>::__unique_single 3040make_unique(_Args&&... __args) 3041{ 3042 return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...)); 3043} 3044 3045template<class _Tp> 3046inline _LIBCPP_INLINE_VISIBILITY 3047typename __unique_if<_Tp>::__unique_array_unknown_bound 3048make_unique(size_t __n) 3049{ 3050 typedef typename remove_extent<_Tp>::type _Up; 3051 return unique_ptr<_Tp>(new _Up[__n]()); 3052} 3053 3054template<class _Tp, class... _Args> 3055 typename __unique_if<_Tp>::__unique_array_known_bound 3056 make_unique(_Args&&...) = delete; 3057 3058#endif // _LIBCPP_STD_VER > 11 3059 3060template <class _Tp> struct hash; 3061 3062template <class _Size> 3063inline _LIBCPP_INLINE_VISIBILITY 3064_Size 3065__loadword(const void* __p) 3066{ 3067 _Size __r; 3068 std::memcpy(&__r, __p, sizeof(__r)); 3069 return __r; 3070} 3071 3072// We use murmur2 when size_t is 32 bits, and cityhash64 when size_t 3073// is 64 bits. This is because cityhash64 uses 64bit x 64bit 3074// multiplication, which can be very slow on 32-bit systems. 3075template <class _Size, size_t = sizeof(_Size)*__CHAR_BIT__> 3076struct __murmur2_or_cityhash; 3077 3078template <class _Size> 3079struct __murmur2_or_cityhash<_Size, 32> 3080{ 3081 _Size operator()(const void* __key, _Size __len); 3082}; 3083 3084// murmur2 3085template <class _Size> 3086_Size 3087__murmur2_or_cityhash<_Size, 32>::operator()(const void* __key, _Size __len) 3088{ 3089 const _Size __m = 0x5bd1e995; 3090 const _Size __r = 24; 3091 _Size __h = __len; 3092 const unsigned char* __data = static_cast<const unsigned char*>(__key); 3093 for (; __len >= 4; __data += 4, __len -= 4) 3094 { 3095 _Size __k = __loadword<_Size>(__data); 3096 __k *= __m; 3097 __k ^= __k >> __r; 3098 __k *= __m; 3099 __h *= __m; 3100 __h ^= __k; 3101 } 3102 switch (__len) 3103 { 3104 case 3: 3105 __h ^= __data[2] << 16; 3106 case 2: 3107 __h ^= __data[1] << 8; 3108 case 1: 3109 __h ^= __data[0]; 3110 __h *= __m; 3111 } 3112 __h ^= __h >> 13; 3113 __h *= __m; 3114 __h ^= __h >> 15; 3115 return __h; 3116} 3117 3118template <class _Size> 3119struct __murmur2_or_cityhash<_Size, 64> 3120{ 3121 _Size operator()(const void* __key, _Size __len); 3122 3123 private: 3124 // Some primes between 2^63 and 2^64. 3125 static const _Size __k0 = 0xc3a5c85c97cb3127ULL; 3126 static const _Size __k1 = 0xb492b66fbe98f273ULL; 3127 static const _Size __k2 = 0x9ae16a3b2f90404fULL; 3128 static const _Size __k3 = 0xc949d7c7509e6557ULL; 3129 3130 static _Size __rotate(_Size __val, int __shift) { 3131 return __shift == 0 ? __val : ((__val >> __shift) | (__val << (64 - __shift))); 3132 } 3133 3134 static _Size __rotate_by_at_least_1(_Size __val, int __shift) { 3135 return (__val >> __shift) | (__val << (64 - __shift)); 3136 } 3137 3138 static _Size __shift_mix(_Size __val) { 3139 return __val ^ (__val >> 47); 3140 } 3141 3142 static _Size __hash_len_16(_Size __u, _Size __v) { 3143 const _Size __mul = 0x9ddfea08eb382d69ULL; 3144 _Size __a = (__u ^ __v) * __mul; 3145 __a ^= (__a >> 47); 3146 _Size __b = (__v ^ __a) * __mul; 3147 __b ^= (__b >> 47); 3148 __b *= __mul; 3149 return __b; 3150 } 3151 3152 static _Size __hash_len_0_to_16(const char* __s, _Size __len) { 3153 if (__len > 8) { 3154 const _Size __a = __loadword<_Size>(__s); 3155 const _Size __b = __loadword<_Size>(__s + __len - 8); 3156 return __hash_len_16(__a, __rotate_by_at_least_1(__b + __len, __len)) ^ __b; 3157 } 3158 if (__len >= 4) { 3159 const uint32_t __a = __loadword<uint32_t>(__s); 3160 const uint32_t __b = __loadword<uint32_t>(__s + __len - 4); 3161 return __hash_len_16(__len + (__a << 3), __b); 3162 } 3163 if (__len > 0) { 3164 const unsigned char __a = __s[0]; 3165 const unsigned char __b = __s[__len >> 1]; 3166 const unsigned char __c = __s[__len - 1]; 3167 const uint32_t __y = static_cast<uint32_t>(__a) + 3168 (static_cast<uint32_t>(__b) << 8); 3169 const uint32_t __z = __len + (static_cast<uint32_t>(__c) << 2); 3170 return __shift_mix(__y * __k2 ^ __z * __k3) * __k2; 3171 } 3172 return __k2; 3173 } 3174 3175 static _Size __hash_len_17_to_32(const char *__s, _Size __len) { 3176 const _Size __a = __loadword<_Size>(__s) * __k1; 3177 const _Size __b = __loadword<_Size>(__s + 8); 3178 const _Size __c = __loadword<_Size>(__s + __len - 8) * __k2; 3179 const _Size __d = __loadword<_Size>(__s + __len - 16) * __k0; 3180 return __hash_len_16(__rotate(__a - __b, 43) + __rotate(__c, 30) + __d, 3181 __a + __rotate(__b ^ __k3, 20) - __c + __len); 3182 } 3183 3184 // Return a 16-byte hash for 48 bytes. Quick and dirty. 3185 // Callers do best to use "random-looking" values for a and b. 3186 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3187 _Size __w, _Size __x, _Size __y, _Size __z, _Size __a, _Size __b) { 3188 __a += __w; 3189 __b = __rotate(__b + __a + __z, 21); 3190 const _Size __c = __a; 3191 __a += __x; 3192 __a += __y; 3193 __b += __rotate(__a, 44); 3194 return pair<_Size, _Size>(__a + __z, __b + __c); 3195 } 3196 3197 // Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty. 3198 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3199 const char* __s, _Size __a, _Size __b) { 3200 return __weak_hash_len_32_with_seeds(__loadword<_Size>(__s), 3201 __loadword<_Size>(__s + 8), 3202 __loadword<_Size>(__s + 16), 3203 __loadword<_Size>(__s + 24), 3204 __a, 3205 __b); 3206 } 3207 3208 // Return an 8-byte hash for 33 to 64 bytes. 3209 static _Size __hash_len_33_to_64(const char *__s, size_t __len) { 3210 _Size __z = __loadword<_Size>(__s + 24); 3211 _Size __a = __loadword<_Size>(__s) + 3212 (__len + __loadword<_Size>(__s + __len - 16)) * __k0; 3213 _Size __b = __rotate(__a + __z, 52); 3214 _Size __c = __rotate(__a, 37); 3215 __a += __loadword<_Size>(__s + 8); 3216 __c += __rotate(__a, 7); 3217 __a += __loadword<_Size>(__s + 16); 3218 _Size __vf = __a + __z; 3219 _Size __vs = __b + __rotate(__a, 31) + __c; 3220 __a = __loadword<_Size>(__s + 16) + __loadword<_Size>(__s + __len - 32); 3221 __z += __loadword<_Size>(__s + __len - 8); 3222 __b = __rotate(__a + __z, 52); 3223 __c = __rotate(__a, 37); 3224 __a += __loadword<_Size>(__s + __len - 24); 3225 __c += __rotate(__a, 7); 3226 __a += __loadword<_Size>(__s + __len - 16); 3227 _Size __wf = __a + __z; 3228 _Size __ws = __b + __rotate(__a, 31) + __c; 3229 _Size __r = __shift_mix((__vf + __ws) * __k2 + (__wf + __vs) * __k0); 3230 return __shift_mix(__r * __k0 + __vs) * __k2; 3231 } 3232}; 3233 3234// cityhash64 3235template <class _Size> 3236_Size 3237__murmur2_or_cityhash<_Size, 64>::operator()(const void* __key, _Size __len) 3238{ 3239 const char* __s = static_cast<const char*>(__key); 3240 if (__len <= 32) { 3241 if (__len <= 16) { 3242 return __hash_len_0_to_16(__s, __len); 3243 } else { 3244 return __hash_len_17_to_32(__s, __len); 3245 } 3246 } else if (__len <= 64) { 3247 return __hash_len_33_to_64(__s, __len); 3248 } 3249 3250 // For strings over 64 bytes we hash the end first, and then as we 3251 // loop we keep 56 bytes of state: v, w, x, y, and z. 3252 _Size __x = __loadword<_Size>(__s + __len - 40); 3253 _Size __y = __loadword<_Size>(__s + __len - 16) + 3254 __loadword<_Size>(__s + __len - 56); 3255 _Size __z = __hash_len_16(__loadword<_Size>(__s + __len - 48) + __len, 3256 __loadword<_Size>(__s + __len - 24)); 3257 pair<_Size, _Size> __v = __weak_hash_len_32_with_seeds(__s + __len - 64, __len, __z); 3258 pair<_Size, _Size> __w = __weak_hash_len_32_with_seeds(__s + __len - 32, __y + __k1, __x); 3259 __x = __x * __k1 + __loadword<_Size>(__s); 3260 3261 // Decrease len to the nearest multiple of 64, and operate on 64-byte chunks. 3262 __len = (__len - 1) & ~static_cast<_Size>(63); 3263 do { 3264 __x = __rotate(__x + __y + __v.first + __loadword<_Size>(__s + 8), 37) * __k1; 3265 __y = __rotate(__y + __v.second + __loadword<_Size>(__s + 48), 42) * __k1; 3266 __x ^= __w.second; 3267 __y += __v.first + __loadword<_Size>(__s + 40); 3268 __z = __rotate(__z + __w.first, 33) * __k1; 3269 __v = __weak_hash_len_32_with_seeds(__s, __v.second * __k1, __x + __w.first); 3270 __w = __weak_hash_len_32_with_seeds(__s + 32, __z + __w.second, 3271 __y + __loadword<_Size>(__s + 16)); 3272 std::swap(__z, __x); 3273 __s += 64; 3274 __len -= 64; 3275 } while (__len != 0); 3276 return __hash_len_16( 3277 __hash_len_16(__v.first, __w.first) + __shift_mix(__y) * __k1 + __z, 3278 __hash_len_16(__v.second, __w.second) + __x); 3279} 3280 3281template <class _Tp, size_t = sizeof(_Tp) / sizeof(size_t)> 3282struct __scalar_hash; 3283 3284template <class _Tp> 3285struct __scalar_hash<_Tp, 0> 3286 : public unary_function<_Tp, size_t> 3287{ 3288 _LIBCPP_INLINE_VISIBILITY 3289 size_t operator()(_Tp __v) const _NOEXCEPT 3290 { 3291 union 3292 { 3293 _Tp __t; 3294 size_t __a; 3295 } __u; 3296 __u.__a = 0; 3297 __u.__t = __v; 3298 return __u.__a; 3299 } 3300}; 3301 3302template <class _Tp> 3303struct __scalar_hash<_Tp, 1> 3304 : public unary_function<_Tp, size_t> 3305{ 3306 _LIBCPP_INLINE_VISIBILITY 3307 size_t operator()(_Tp __v) const _NOEXCEPT 3308 { 3309 union 3310 { 3311 _Tp __t; 3312 size_t __a; 3313 } __u; 3314 __u.__t = __v; 3315 return __u.__a; 3316 } 3317}; 3318 3319template <class _Tp> 3320struct __scalar_hash<_Tp, 2> 3321 : public unary_function<_Tp, size_t> 3322{ 3323 _LIBCPP_INLINE_VISIBILITY 3324 size_t operator()(_Tp __v) const _NOEXCEPT 3325 { 3326 union 3327 { 3328 _Tp __t; 3329 struct 3330 { 3331 size_t __a; 3332 size_t __b; 3333 }; 3334 } __u; 3335 __u.__t = __v; 3336 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3337 } 3338}; 3339 3340template <class _Tp> 3341struct __scalar_hash<_Tp, 3> 3342 : public unary_function<_Tp, size_t> 3343{ 3344 _LIBCPP_INLINE_VISIBILITY 3345 size_t operator()(_Tp __v) const _NOEXCEPT 3346 { 3347 union 3348 { 3349 _Tp __t; 3350 struct 3351 { 3352 size_t __a; 3353 size_t __b; 3354 size_t __c; 3355 }; 3356 } __u; 3357 __u.__t = __v; 3358 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3359 } 3360}; 3361 3362template <class _Tp> 3363struct __scalar_hash<_Tp, 4> 3364 : public unary_function<_Tp, size_t> 3365{ 3366 _LIBCPP_INLINE_VISIBILITY 3367 size_t operator()(_Tp __v) const _NOEXCEPT 3368 { 3369 union 3370 { 3371 _Tp __t; 3372 struct 3373 { 3374 size_t __a; 3375 size_t __b; 3376 size_t __c; 3377 size_t __d; 3378 }; 3379 } __u; 3380 __u.__t = __v; 3381 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3382 } 3383}; 3384 3385template<class _Tp> 3386struct _LIBCPP_TYPE_VIS_ONLY hash<_Tp*> 3387 : public unary_function<_Tp*, size_t> 3388{ 3389 _LIBCPP_INLINE_VISIBILITY 3390 size_t operator()(_Tp* __v) const _NOEXCEPT 3391 { 3392 union 3393 { 3394 _Tp* __t; 3395 size_t __a; 3396 } __u; 3397 __u.__t = __v; 3398 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3399 } 3400}; 3401 3402template <class _Tp, class _Dp> 3403struct _LIBCPP_TYPE_VIS_ONLY hash<unique_ptr<_Tp, _Dp> > 3404{ 3405 typedef unique_ptr<_Tp, _Dp> argument_type; 3406 typedef size_t result_type; 3407 _LIBCPP_INLINE_VISIBILITY 3408 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 3409 { 3410 typedef typename argument_type::pointer pointer; 3411 return hash<pointer>()(__ptr.get()); 3412 } 3413}; 3414 3415struct __destruct_n 3416{ 3417private: 3418 size_t size; 3419 3420 template <class _Tp> 3421 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT 3422 {for (size_t __i = 0; __i < size; ++__i, ++__p) __p->~_Tp();} 3423 3424 template <class _Tp> 3425 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT 3426 {} 3427 3428 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT 3429 {++size;} 3430 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT 3431 {} 3432 3433 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT 3434 {size = __s;} 3435 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT 3436 {} 3437public: 3438 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT 3439 : size(__s) {} 3440 3441 template <class _Tp> 3442 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT 3443 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3444 3445 template <class _Tp> 3446 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT 3447 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3448 3449 template <class _Tp> 3450 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT 3451 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3452}; 3453 3454template <class _Alloc> 3455class __allocator_destructor 3456{ 3457 typedef allocator_traits<_Alloc> __alloc_traits; 3458public: 3459 typedef typename __alloc_traits::pointer pointer; 3460 typedef typename __alloc_traits::size_type size_type; 3461private: 3462 _Alloc& __alloc_; 3463 size_type __s_; 3464public: 3465 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) 3466 _NOEXCEPT 3467 : __alloc_(__a), __s_(__s) {} 3468 _LIBCPP_INLINE_VISIBILITY 3469 void operator()(pointer __p) _NOEXCEPT 3470 {__alloc_traits::deallocate(__alloc_, __p, __s_);} 3471}; 3472 3473template <class _InputIterator, class _ForwardIterator> 3474_ForwardIterator 3475uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) 3476{ 3477 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3478#ifndef _LIBCPP_NO_EXCEPTIONS 3479 _ForwardIterator __s = __r; 3480 try 3481 { 3482#endif 3483 for (; __f != __l; ++__f, ++__r) 3484 ::new(&*__r) value_type(*__f); 3485#ifndef _LIBCPP_NO_EXCEPTIONS 3486 } 3487 catch (...) 3488 { 3489 for (; __s != __r; ++__s) 3490 __s->~value_type(); 3491 throw; 3492 } 3493#endif 3494 return __r; 3495} 3496 3497template <class _InputIterator, class _Size, class _ForwardIterator> 3498_ForwardIterator 3499uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) 3500{ 3501 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3502#ifndef _LIBCPP_NO_EXCEPTIONS 3503 _ForwardIterator __s = __r; 3504 try 3505 { 3506#endif 3507 for (; __n > 0; ++__f, ++__r, --__n) 3508 ::new(&*__r) value_type(*__f); 3509#ifndef _LIBCPP_NO_EXCEPTIONS 3510 } 3511 catch (...) 3512 { 3513 for (; __s != __r; ++__s) 3514 __s->~value_type(); 3515 throw; 3516 } 3517#endif 3518 return __r; 3519} 3520 3521template <class _ForwardIterator, class _Tp> 3522void 3523uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) 3524{ 3525 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3526#ifndef _LIBCPP_NO_EXCEPTIONS 3527 _ForwardIterator __s = __f; 3528 try 3529 { 3530#endif 3531 for (; __f != __l; ++__f) 3532 ::new(&*__f) value_type(__x); 3533#ifndef _LIBCPP_NO_EXCEPTIONS 3534 } 3535 catch (...) 3536 { 3537 for (; __s != __f; ++__s) 3538 __s->~value_type(); 3539 throw; 3540 } 3541#endif 3542} 3543 3544template <class _ForwardIterator, class _Size, class _Tp> 3545_ForwardIterator 3546uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) 3547{ 3548 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3549#ifndef _LIBCPP_NO_EXCEPTIONS 3550 _ForwardIterator __s = __f; 3551 try 3552 { 3553#endif 3554 for (; __n > 0; ++__f, --__n) 3555 ::new(&*__f) value_type(__x); 3556#ifndef _LIBCPP_NO_EXCEPTIONS 3557 } 3558 catch (...) 3559 { 3560 for (; __s != __f; ++__s) 3561 __s->~value_type(); 3562 throw; 3563 } 3564#endif 3565 return __f; 3566} 3567 3568class _LIBCPP_EXCEPTION_ABI bad_weak_ptr 3569 : public std::exception 3570{ 3571public: 3572 virtual ~bad_weak_ptr() _NOEXCEPT; 3573 virtual const char* what() const _NOEXCEPT; 3574}; 3575 3576template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 3577 3578class _LIBCPP_TYPE_VIS __shared_count 3579{ 3580 __shared_count(const __shared_count&); 3581 __shared_count& operator=(const __shared_count&); 3582 3583protected: 3584 long __shared_owners_; 3585 virtual ~__shared_count(); 3586private: 3587 virtual void __on_zero_shared() _NOEXCEPT = 0; 3588 3589public: 3590 _LIBCPP_INLINE_VISIBILITY 3591 explicit __shared_count(long __refs = 0) _NOEXCEPT 3592 : __shared_owners_(__refs) {} 3593 3594 void __add_shared() _NOEXCEPT; 3595 bool __release_shared() _NOEXCEPT; 3596 _LIBCPP_INLINE_VISIBILITY 3597 long use_count() const _NOEXCEPT {return __shared_owners_ + 1;} 3598}; 3599 3600class _LIBCPP_TYPE_VIS __shared_weak_count 3601 : private __shared_count 3602{ 3603 long __shared_weak_owners_; 3604 3605public: 3606 _LIBCPP_INLINE_VISIBILITY 3607 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT 3608 : __shared_count(__refs), 3609 __shared_weak_owners_(__refs) {} 3610protected: 3611 virtual ~__shared_weak_count(); 3612 3613public: 3614 void __add_shared() _NOEXCEPT; 3615 void __add_weak() _NOEXCEPT; 3616 void __release_shared() _NOEXCEPT; 3617 void __release_weak() _NOEXCEPT; 3618 _LIBCPP_INLINE_VISIBILITY 3619 long use_count() const _NOEXCEPT {return __shared_count::use_count();} 3620 __shared_weak_count* lock() _NOEXCEPT; 3621 3622 // Define the function out only if we build static libc++ without RTTI. 3623 // Otherwise we may break clients who need to compile their projects with 3624 // -fno-rtti and yet link against a libc++.dylib compiled 3625 // without -fno-rtti. 3626#if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC) 3627 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3628#endif 3629private: 3630 virtual void __on_zero_shared_weak() _NOEXCEPT = 0; 3631}; 3632 3633template <class _Tp, class _Dp, class _Alloc> 3634class __shared_ptr_pointer 3635 : public __shared_weak_count 3636{ 3637 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; 3638public: 3639 _LIBCPP_INLINE_VISIBILITY 3640 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) 3641 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {} 3642 3643#ifndef _LIBCPP_NO_RTTI 3644 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3645#endif 3646 3647private: 3648 virtual void __on_zero_shared() _NOEXCEPT; 3649 virtual void __on_zero_shared_weak() _NOEXCEPT; 3650}; 3651 3652#ifndef _LIBCPP_NO_RTTI 3653 3654template <class _Tp, class _Dp, class _Alloc> 3655const void* 3656__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT 3657{ 3658 return __t == typeid(_Dp) ? &__data_.first().second() : 0; 3659} 3660 3661#endif // _LIBCPP_NO_RTTI 3662 3663template <class _Tp, class _Dp, class _Alloc> 3664void 3665__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT 3666{ 3667 __data_.first().second()(__data_.first().first()); 3668 __data_.first().second().~_Dp(); 3669} 3670 3671template <class _Tp, class _Dp, class _Alloc> 3672void 3673__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3674{ 3675 typename _Alloc::template rebind<__shared_ptr_pointer>::other __a(__data_.second()); 3676 __data_.second().~_Alloc(); 3677 __a.deallocate(this, 1); 3678} 3679 3680template <class _Tp, class _Alloc> 3681class __shared_ptr_emplace 3682 : public __shared_weak_count 3683{ 3684 __compressed_pair<_Alloc, _Tp> __data_; 3685public: 3686#ifndef _LIBCPP_HAS_NO_VARIADICS 3687 3688 _LIBCPP_INLINE_VISIBILITY 3689 __shared_ptr_emplace(_Alloc __a) 3690 : __data_(_VSTD::move(__a)) {} 3691 3692 template <class ..._Args> 3693 _LIBCPP_INLINE_VISIBILITY 3694 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) 3695 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a), 3696 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {} 3697 3698#else // _LIBCPP_HAS_NO_VARIADICS 3699 3700 _LIBCPP_INLINE_VISIBILITY 3701 __shared_ptr_emplace(_Alloc __a) 3702 : __data_(__a) {} 3703 3704 template <class _A0> 3705 _LIBCPP_INLINE_VISIBILITY 3706 __shared_ptr_emplace(_Alloc __a, _A0& __a0) 3707 : __data_(__a, _Tp(__a0)) {} 3708 3709 template <class _A0, class _A1> 3710 _LIBCPP_INLINE_VISIBILITY 3711 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) 3712 : __data_(__a, _Tp(__a0, __a1)) {} 3713 3714 template <class _A0, class _A1, class _A2> 3715 _LIBCPP_INLINE_VISIBILITY 3716 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) 3717 : __data_(__a, _Tp(__a0, __a1, __a2)) {} 3718 3719#endif // _LIBCPP_HAS_NO_VARIADICS 3720 3721private: 3722 virtual void __on_zero_shared() _NOEXCEPT; 3723 virtual void __on_zero_shared_weak() _NOEXCEPT; 3724public: 3725 _LIBCPP_INLINE_VISIBILITY 3726 _Tp* get() _NOEXCEPT {return &__data_.second();} 3727}; 3728 3729template <class _Tp, class _Alloc> 3730void 3731__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT 3732{ 3733 __data_.second().~_Tp(); 3734} 3735 3736template <class _Tp, class _Alloc> 3737void 3738__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3739{ 3740 typename _Alloc::template rebind<__shared_ptr_emplace>::other __a(__data_.first()); 3741 __data_.first().~_Alloc(); 3742 __a.deallocate(this, 1); 3743} 3744 3745template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this; 3746 3747template<class _Tp> 3748class _LIBCPP_TYPE_VIS_ONLY shared_ptr 3749{ 3750public: 3751 typedef _Tp element_type; 3752private: 3753 element_type* __ptr_; 3754 __shared_weak_count* __cntrl_; 3755 3756 struct __nat {int __for_bool_;}; 3757public: 3758 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT; 3759 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT; 3760 template<class _Yp> 3761 explicit shared_ptr(_Yp* __p, 3762 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3763 template<class _Yp, class _Dp> 3764 shared_ptr(_Yp* __p, _Dp __d, 3765 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3766 template<class _Yp, class _Dp, class _Alloc> 3767 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 3768 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3769 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); 3770 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); 3771 template<class _Yp> shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT; 3772 shared_ptr(const shared_ptr& __r) _NOEXCEPT; 3773 template<class _Yp> 3774 shared_ptr(const shared_ptr<_Yp>& __r, 3775 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3776 _NOEXCEPT; 3777#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3778 shared_ptr(shared_ptr&& __r) _NOEXCEPT; 3779 template<class _Yp> shared_ptr(shared_ptr<_Yp>&& __r, 3780 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3781 _NOEXCEPT; 3782#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3783 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, 3784 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type= __nat()); 3785#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3786 template<class _Yp> 3787 shared_ptr(auto_ptr<_Yp>&& __r, 3788 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3789#else 3790 template<class _Yp> 3791 shared_ptr(auto_ptr<_Yp> __r, 3792 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); 3793#endif 3794#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3795 template <class _Yp, class _Dp> 3796 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3797 typename enable_if 3798 < 3799 !is_lvalue_reference<_Dp>::value && 3800 !is_array<_Yp>::value && 3801 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3802 __nat 3803 >::type = __nat()); 3804 template <class _Yp, class _Dp> 3805 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3806 typename enable_if 3807 < 3808 is_lvalue_reference<_Dp>::value && 3809 !is_array<_Yp>::value && 3810 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3811 __nat 3812 >::type = __nat()); 3813#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3814 template <class _Yp, class _Dp> 3815 shared_ptr(unique_ptr<_Yp, _Dp>, 3816 typename enable_if 3817 < 3818 !is_lvalue_reference<_Dp>::value && 3819 !is_array<_Yp>::value && 3820 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3821 __nat 3822 >::type = __nat()); 3823 template <class _Yp, class _Dp> 3824 shared_ptr(unique_ptr<_Yp, _Dp>, 3825 typename enable_if 3826 < 3827 is_lvalue_reference<_Dp>::value && 3828 !is_array<_Yp>::value && 3829 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3830 __nat 3831 >::type = __nat()); 3832#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3833 3834 ~shared_ptr(); 3835 3836 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT; 3837 template<class _Yp> 3838 typename enable_if 3839 < 3840 is_convertible<_Yp*, element_type*>::value, 3841 shared_ptr& 3842 >::type 3843 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT; 3844#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3845 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT; 3846 template<class _Yp> 3847 typename enable_if 3848 < 3849 is_convertible<_Yp*, element_type*>::value, 3850 shared_ptr<_Tp>& 3851 >::type 3852 operator=(shared_ptr<_Yp>&& __r); 3853 template<class _Yp> 3854 typename enable_if 3855 < 3856 !is_array<_Yp>::value && 3857 is_convertible<_Yp*, element_type*>::value, 3858 shared_ptr 3859 >::type& 3860 operator=(auto_ptr<_Yp>&& __r); 3861#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3862 template<class _Yp> 3863 typename enable_if 3864 < 3865 !is_array<_Yp>::value && 3866 is_convertible<_Yp*, element_type*>::value, 3867 shared_ptr& 3868 >::type 3869 operator=(auto_ptr<_Yp> __r); 3870#endif 3871 template <class _Yp, class _Dp> 3872 typename enable_if 3873 < 3874 !is_array<_Yp>::value && 3875 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3876 shared_ptr& 3877 >::type 3878#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3879 operator=(unique_ptr<_Yp, _Dp>&& __r); 3880#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3881 operator=(unique_ptr<_Yp, _Dp> __r); 3882#endif 3883 3884 void swap(shared_ptr& __r) _NOEXCEPT; 3885 void reset() _NOEXCEPT; 3886 template<class _Yp> 3887 typename enable_if 3888 < 3889 is_convertible<_Yp*, element_type*>::value, 3890 void 3891 >::type 3892 reset(_Yp* __p); 3893 template<class _Yp, class _Dp> 3894 typename enable_if 3895 < 3896 is_convertible<_Yp*, element_type*>::value, 3897 void 3898 >::type 3899 reset(_Yp* __p, _Dp __d); 3900 template<class _Yp, class _Dp, class _Alloc> 3901 typename enable_if 3902 < 3903 is_convertible<_Yp*, element_type*>::value, 3904 void 3905 >::type 3906 reset(_Yp* __p, _Dp __d, _Alloc __a); 3907 3908 _LIBCPP_INLINE_VISIBILITY 3909 element_type* get() const _NOEXCEPT {return __ptr_;} 3910 _LIBCPP_INLINE_VISIBILITY 3911 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT 3912 {return *__ptr_;} 3913 _LIBCPP_INLINE_VISIBILITY 3914 element_type* operator->() const _NOEXCEPT {return __ptr_;} 3915 _LIBCPP_INLINE_VISIBILITY 3916 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;} 3917 _LIBCPP_INLINE_VISIBILITY 3918 bool unique() const _NOEXCEPT {return use_count() == 1;} 3919 _LIBCPP_INLINE_VISIBILITY 3920 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;} 3921 template <class _Up> 3922 _LIBCPP_INLINE_VISIBILITY 3923 bool owner_before(shared_ptr<_Up> const& __p) const 3924 {return __cntrl_ < __p.__cntrl_;} 3925 template <class _Up> 3926 _LIBCPP_INLINE_VISIBILITY 3927 bool owner_before(weak_ptr<_Up> const& __p) const 3928 {return __cntrl_ < __p.__cntrl_;} 3929 _LIBCPP_INLINE_VISIBILITY 3930 bool 3931 __owner_equivalent(const shared_ptr& __p) const 3932 {return __cntrl_ == __p.__cntrl_;} 3933 3934#ifndef _LIBCPP_NO_RTTI 3935 template <class _Dp> 3936 _LIBCPP_INLINE_VISIBILITY 3937 _Dp* __get_deleter() const _NOEXCEPT 3938 {return (_Dp*)(__cntrl_ ? __cntrl_->__get_deleter(typeid(_Dp)) : 0);} 3939#endif // _LIBCPP_NO_RTTI 3940 3941#ifndef _LIBCPP_HAS_NO_VARIADICS 3942 3943 template<class ..._Args> 3944 static 3945 shared_ptr<_Tp> 3946 make_shared(_Args&& ...__args); 3947 3948 template<class _Alloc, class ..._Args> 3949 static 3950 shared_ptr<_Tp> 3951 allocate_shared(const _Alloc& __a, _Args&& ...__args); 3952 3953#else // _LIBCPP_HAS_NO_VARIADICS 3954 3955 static shared_ptr<_Tp> make_shared(); 3956 3957 template<class _A0> 3958 static shared_ptr<_Tp> make_shared(_A0&); 3959 3960 template<class _A0, class _A1> 3961 static shared_ptr<_Tp> make_shared(_A0&, _A1&); 3962 3963 template<class _A0, class _A1, class _A2> 3964 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); 3965 3966 template<class _Alloc> 3967 static shared_ptr<_Tp> 3968 allocate_shared(const _Alloc& __a); 3969 3970 template<class _Alloc, class _A0> 3971 static shared_ptr<_Tp> 3972 allocate_shared(const _Alloc& __a, _A0& __a0); 3973 3974 template<class _Alloc, class _A0, class _A1> 3975 static shared_ptr<_Tp> 3976 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); 3977 3978 template<class _Alloc, class _A0, class _A1, class _A2> 3979 static shared_ptr<_Tp> 3980 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); 3981 3982#endif // _LIBCPP_HAS_NO_VARIADICS 3983 3984private: 3985 3986 template <class _Yp> 3987 _LIBCPP_INLINE_VISIBILITY 3988 void 3989 __enable_weak_this(const enable_shared_from_this<_Yp>* __e) _NOEXCEPT 3990 { 3991 if (__e) 3992 __e->__weak_this_ = *this; 3993 } 3994 3995 _LIBCPP_INLINE_VISIBILITY 3996 void __enable_weak_this(const void*) _NOEXCEPT {} 3997 3998 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr; 3999 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 4000}; 4001 4002template<class _Tp> 4003inline _LIBCPP_INLINE_VISIBILITY 4004_LIBCPP_CONSTEXPR 4005shared_ptr<_Tp>::shared_ptr() _NOEXCEPT 4006 : __ptr_(0), 4007 __cntrl_(0) 4008{ 4009} 4010 4011template<class _Tp> 4012inline _LIBCPP_INLINE_VISIBILITY 4013_LIBCPP_CONSTEXPR 4014shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT 4015 : __ptr_(0), 4016 __cntrl_(0) 4017{ 4018} 4019 4020template<class _Tp> 4021template<class _Yp> 4022shared_ptr<_Tp>::shared_ptr(_Yp* __p, 4023 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4024 : __ptr_(__p) 4025{ 4026 unique_ptr<_Yp> __hold(__p); 4027 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4028 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), allocator<_Yp>()); 4029 __hold.release(); 4030 __enable_weak_this(__p); 4031} 4032 4033template<class _Tp> 4034template<class _Yp, class _Dp> 4035shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, 4036 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4037 : __ptr_(__p) 4038{ 4039#ifndef _LIBCPP_NO_EXCEPTIONS 4040 try 4041 { 4042#endif // _LIBCPP_NO_EXCEPTIONS 4043 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4044 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Yp>()); 4045 __enable_weak_this(__p); 4046#ifndef _LIBCPP_NO_EXCEPTIONS 4047 } 4048 catch (...) 4049 { 4050 __d(__p); 4051 throw; 4052 } 4053#endif // _LIBCPP_NO_EXCEPTIONS 4054} 4055 4056template<class _Tp> 4057template<class _Dp> 4058shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) 4059 : __ptr_(0) 4060{ 4061#ifndef _LIBCPP_NO_EXCEPTIONS 4062 try 4063 { 4064#endif // _LIBCPP_NO_EXCEPTIONS 4065 typedef __shared_ptr_pointer<nullptr_t, _Dp, allocator<_Tp> > _CntrlBlk; 4066 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Tp>()); 4067#ifndef _LIBCPP_NO_EXCEPTIONS 4068 } 4069 catch (...) 4070 { 4071 __d(__p); 4072 throw; 4073 } 4074#endif // _LIBCPP_NO_EXCEPTIONS 4075} 4076 4077template<class _Tp> 4078template<class _Yp, class _Dp, class _Alloc> 4079shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, 4080 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4081 : __ptr_(__p) 4082{ 4083#ifndef _LIBCPP_NO_EXCEPTIONS 4084 try 4085 { 4086#endif // _LIBCPP_NO_EXCEPTIONS 4087 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; 4088 typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; 4089 typedef __allocator_destructor<_A2> _D2; 4090 _A2 __a2(__a); 4091 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4092 ::new(__hold2.get()) _CntrlBlk(__p, __d, __a); 4093 __cntrl_ = __hold2.release(); 4094 __enable_weak_this(__p); 4095#ifndef _LIBCPP_NO_EXCEPTIONS 4096 } 4097 catch (...) 4098 { 4099 __d(__p); 4100 throw; 4101 } 4102#endif // _LIBCPP_NO_EXCEPTIONS 4103} 4104 4105template<class _Tp> 4106template<class _Dp, class _Alloc> 4107shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) 4108 : __ptr_(0) 4109{ 4110#ifndef _LIBCPP_NO_EXCEPTIONS 4111 try 4112 { 4113#endif // _LIBCPP_NO_EXCEPTIONS 4114 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; 4115 typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; 4116 typedef __allocator_destructor<_A2> _D2; 4117 _A2 __a2(__a); 4118 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4119 ::new(__hold2.get()) _CntrlBlk(__p, __d, __a); 4120 __cntrl_ = __hold2.release(); 4121#ifndef _LIBCPP_NO_EXCEPTIONS 4122 } 4123 catch (...) 4124 { 4125 __d(__p); 4126 throw; 4127 } 4128#endif // _LIBCPP_NO_EXCEPTIONS 4129} 4130 4131template<class _Tp> 4132template<class _Yp> 4133inline _LIBCPP_INLINE_VISIBILITY 4134shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT 4135 : __ptr_(__p), 4136 __cntrl_(__r.__cntrl_) 4137{ 4138 if (__cntrl_) 4139 __cntrl_->__add_shared(); 4140} 4141 4142template<class _Tp> 4143inline _LIBCPP_INLINE_VISIBILITY 4144shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT 4145 : __ptr_(__r.__ptr_), 4146 __cntrl_(__r.__cntrl_) 4147{ 4148 if (__cntrl_) 4149 __cntrl_->__add_shared(); 4150} 4151 4152template<class _Tp> 4153template<class _Yp> 4154inline _LIBCPP_INLINE_VISIBILITY 4155shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, 4156 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4157 _NOEXCEPT 4158 : __ptr_(__r.__ptr_), 4159 __cntrl_(__r.__cntrl_) 4160{ 4161 if (__cntrl_) 4162 __cntrl_->__add_shared(); 4163} 4164 4165#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4166 4167template<class _Tp> 4168inline _LIBCPP_INLINE_VISIBILITY 4169shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT 4170 : __ptr_(__r.__ptr_), 4171 __cntrl_(__r.__cntrl_) 4172{ 4173 __r.__ptr_ = 0; 4174 __r.__cntrl_ = 0; 4175} 4176 4177template<class _Tp> 4178template<class _Yp> 4179inline _LIBCPP_INLINE_VISIBILITY 4180shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, 4181 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4182 _NOEXCEPT 4183 : __ptr_(__r.__ptr_), 4184 __cntrl_(__r.__cntrl_) 4185{ 4186 __r.__ptr_ = 0; 4187 __r.__cntrl_ = 0; 4188} 4189 4190#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4191 4192template<class _Tp> 4193template<class _Yp> 4194#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4195shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r, 4196#else 4197shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r, 4198#endif 4199 typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) 4200 : __ptr_(__r.get()) 4201{ 4202 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4203 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); 4204 __enable_weak_this(__r.get()); 4205 __r.release(); 4206} 4207 4208template<class _Tp> 4209template <class _Yp, class _Dp> 4210#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4211shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4212#else 4213shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4214#endif 4215 typename enable_if 4216 < 4217 !is_lvalue_reference<_Dp>::value && 4218 !is_array<_Yp>::value && 4219 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4220 __nat 4221 >::type) 4222 : __ptr_(__r.get()) 4223{ 4224 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4225 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), allocator<_Yp>()); 4226 __enable_weak_this(__r.get()); 4227 __r.release(); 4228} 4229 4230template<class _Tp> 4231template <class _Yp, class _Dp> 4232#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4233shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4234#else 4235shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4236#endif 4237 typename enable_if 4238 < 4239 is_lvalue_reference<_Dp>::value && 4240 !is_array<_Yp>::value && 4241 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 4242 __nat 4243 >::type) 4244 : __ptr_(__r.get()) 4245{ 4246 typedef __shared_ptr_pointer<_Yp*, 4247 reference_wrapper<typename remove_reference<_Dp>::type>, 4248 allocator<_Yp> > _CntrlBlk; 4249 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), allocator<_Yp>()); 4250 __enable_weak_this(__r.get()); 4251 __r.release(); 4252} 4253 4254#ifndef _LIBCPP_HAS_NO_VARIADICS 4255 4256template<class _Tp> 4257template<class ..._Args> 4258shared_ptr<_Tp> 4259shared_ptr<_Tp>::make_shared(_Args&& ...__args) 4260{ 4261 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4262 typedef allocator<_CntrlBlk> _A2; 4263 typedef __allocator_destructor<_A2> _D2; 4264 _A2 __a2; 4265 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4266 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...); 4267 shared_ptr<_Tp> __r; 4268 __r.__ptr_ = __hold2.get()->get(); 4269 __r.__cntrl_ = __hold2.release(); 4270 __r.__enable_weak_this(__r.__ptr_); 4271 return __r; 4272} 4273 4274template<class _Tp> 4275template<class _Alloc, class ..._Args> 4276shared_ptr<_Tp> 4277shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) 4278{ 4279 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4280 typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; 4281 typedef __allocator_destructor<_A2> _D2; 4282 _A2 __a2(__a); 4283 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4284 ::new(__hold2.get()) _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...); 4285 shared_ptr<_Tp> __r; 4286 __r.__ptr_ = __hold2.get()->get(); 4287 __r.__cntrl_ = __hold2.release(); 4288 __r.__enable_weak_this(__r.__ptr_); 4289 return __r; 4290} 4291 4292#else // _LIBCPP_HAS_NO_VARIADICS 4293 4294template<class _Tp> 4295shared_ptr<_Tp> 4296shared_ptr<_Tp>::make_shared() 4297{ 4298 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4299 typedef allocator<_CntrlBlk> _Alloc2; 4300 typedef __allocator_destructor<_Alloc2> _D2; 4301 _Alloc2 __alloc2; 4302 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4303 ::new(__hold2.get()) _CntrlBlk(__alloc2); 4304 shared_ptr<_Tp> __r; 4305 __r.__ptr_ = __hold2.get()->get(); 4306 __r.__cntrl_ = __hold2.release(); 4307 __r.__enable_weak_this(__r.__ptr_); 4308 return __r; 4309} 4310 4311template<class _Tp> 4312template<class _A0> 4313shared_ptr<_Tp> 4314shared_ptr<_Tp>::make_shared(_A0& __a0) 4315{ 4316 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4317 typedef allocator<_CntrlBlk> _Alloc2; 4318 typedef __allocator_destructor<_Alloc2> _D2; 4319 _Alloc2 __alloc2; 4320 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4321 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); 4322 shared_ptr<_Tp> __r; 4323 __r.__ptr_ = __hold2.get()->get(); 4324 __r.__cntrl_ = __hold2.release(); 4325 __r.__enable_weak_this(__r.__ptr_); 4326 return __r; 4327} 4328 4329template<class _Tp> 4330template<class _A0, class _A1> 4331shared_ptr<_Tp> 4332shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) 4333{ 4334 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4335 typedef allocator<_CntrlBlk> _Alloc2; 4336 typedef __allocator_destructor<_Alloc2> _D2; 4337 _Alloc2 __alloc2; 4338 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4339 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); 4340 shared_ptr<_Tp> __r; 4341 __r.__ptr_ = __hold2.get()->get(); 4342 __r.__cntrl_ = __hold2.release(); 4343 __r.__enable_weak_this(__r.__ptr_); 4344 return __r; 4345} 4346 4347template<class _Tp> 4348template<class _A0, class _A1, class _A2> 4349shared_ptr<_Tp> 4350shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4351{ 4352 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4353 typedef allocator<_CntrlBlk> _Alloc2; 4354 typedef __allocator_destructor<_Alloc2> _D2; 4355 _Alloc2 __alloc2; 4356 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4357 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); 4358 shared_ptr<_Tp> __r; 4359 __r.__ptr_ = __hold2.get()->get(); 4360 __r.__cntrl_ = __hold2.release(); 4361 __r.__enable_weak_this(__r.__ptr_); 4362 return __r; 4363} 4364 4365template<class _Tp> 4366template<class _Alloc> 4367shared_ptr<_Tp> 4368shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) 4369{ 4370 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4371 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4372 typedef __allocator_destructor<_Alloc2> _D2; 4373 _Alloc2 __alloc2(__a); 4374 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4375 ::new(__hold2.get()) _CntrlBlk(__a); 4376 shared_ptr<_Tp> __r; 4377 __r.__ptr_ = __hold2.get()->get(); 4378 __r.__cntrl_ = __hold2.release(); 4379 __r.__enable_weak_this(__r.__ptr_); 4380 return __r; 4381} 4382 4383template<class _Tp> 4384template<class _Alloc, class _A0> 4385shared_ptr<_Tp> 4386shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) 4387{ 4388 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4389 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4390 typedef __allocator_destructor<_Alloc2> _D2; 4391 _Alloc2 __alloc2(__a); 4392 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4393 ::new(__hold2.get()) _CntrlBlk(__a, __a0); 4394 shared_ptr<_Tp> __r; 4395 __r.__ptr_ = __hold2.get()->get(); 4396 __r.__cntrl_ = __hold2.release(); 4397 __r.__enable_weak_this(__r.__ptr_); 4398 return __r; 4399} 4400 4401template<class _Tp> 4402template<class _Alloc, class _A0, class _A1> 4403shared_ptr<_Tp> 4404shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4405{ 4406 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4407 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4408 typedef __allocator_destructor<_Alloc2> _D2; 4409 _Alloc2 __alloc2(__a); 4410 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4411 ::new(__hold2.get()) _CntrlBlk(__a, __a0, __a1); 4412 shared_ptr<_Tp> __r; 4413 __r.__ptr_ = __hold2.get()->get(); 4414 __r.__cntrl_ = __hold2.release(); 4415 __r.__enable_weak_this(__r.__ptr_); 4416 return __r; 4417} 4418 4419template<class _Tp> 4420template<class _Alloc, class _A0, class _A1, class _A2> 4421shared_ptr<_Tp> 4422shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4423{ 4424 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4425 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4426 typedef __allocator_destructor<_Alloc2> _D2; 4427 _Alloc2 __alloc2(__a); 4428 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4429 ::new(__hold2.get()) _CntrlBlk(__a, __a0, __a1, __a2); 4430 shared_ptr<_Tp> __r; 4431 __r.__ptr_ = __hold2.get()->get(); 4432 __r.__cntrl_ = __hold2.release(); 4433 __r.__enable_weak_this(__r.__ptr_); 4434 return __r; 4435} 4436 4437#endif // _LIBCPP_HAS_NO_VARIADICS 4438 4439template<class _Tp> 4440shared_ptr<_Tp>::~shared_ptr() 4441{ 4442 if (__cntrl_) 4443 __cntrl_->__release_shared(); 4444} 4445 4446template<class _Tp> 4447inline _LIBCPP_INLINE_VISIBILITY 4448shared_ptr<_Tp>& 4449shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT 4450{ 4451 shared_ptr(__r).swap(*this); 4452 return *this; 4453} 4454 4455template<class _Tp> 4456template<class _Yp> 4457inline _LIBCPP_INLINE_VISIBILITY 4458typename enable_if 4459< 4460 is_convertible<_Yp*, _Tp*>::value, 4461 shared_ptr<_Tp>& 4462>::type 4463shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT 4464{ 4465 shared_ptr(__r).swap(*this); 4466 return *this; 4467} 4468 4469#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4470 4471template<class _Tp> 4472inline _LIBCPP_INLINE_VISIBILITY 4473shared_ptr<_Tp>& 4474shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT 4475{ 4476 shared_ptr(_VSTD::move(__r)).swap(*this); 4477 return *this; 4478} 4479 4480template<class _Tp> 4481template<class _Yp> 4482inline _LIBCPP_INLINE_VISIBILITY 4483typename enable_if 4484< 4485 is_convertible<_Yp*, _Tp*>::value, 4486 shared_ptr<_Tp>& 4487>::type 4488shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) 4489{ 4490 shared_ptr(_VSTD::move(__r)).swap(*this); 4491 return *this; 4492} 4493 4494template<class _Tp> 4495template<class _Yp> 4496inline _LIBCPP_INLINE_VISIBILITY 4497typename enable_if 4498< 4499 !is_array<_Yp>::value && 4500 is_convertible<_Yp*, _Tp*>::value, 4501 shared_ptr<_Tp> 4502>::type& 4503shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) 4504{ 4505 shared_ptr(_VSTD::move(__r)).swap(*this); 4506 return *this; 4507} 4508 4509template<class _Tp> 4510template <class _Yp, class _Dp> 4511inline _LIBCPP_INLINE_VISIBILITY 4512typename enable_if 4513< 4514 !is_array<_Yp>::value && 4515 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4516 shared_ptr<_Tp>& 4517>::type 4518shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) 4519{ 4520 shared_ptr(_VSTD::move(__r)).swap(*this); 4521 return *this; 4522} 4523 4524#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4525 4526template<class _Tp> 4527template<class _Yp> 4528inline _LIBCPP_INLINE_VISIBILITY 4529typename enable_if 4530< 4531 !is_array<_Yp>::value && 4532 is_convertible<_Yp*, _Tp*>::value, 4533 shared_ptr<_Tp>& 4534>::type 4535shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) 4536{ 4537 shared_ptr(__r).swap(*this); 4538 return *this; 4539} 4540 4541template<class _Tp> 4542template <class _Yp, class _Dp> 4543inline _LIBCPP_INLINE_VISIBILITY 4544typename enable_if 4545< 4546 !is_array<_Yp>::value && 4547 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4548 shared_ptr<_Tp>& 4549>::type 4550shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) 4551{ 4552 shared_ptr(_VSTD::move(__r)).swap(*this); 4553 return *this; 4554} 4555 4556#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4557 4558template<class _Tp> 4559inline _LIBCPP_INLINE_VISIBILITY 4560void 4561shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT 4562{ 4563 _VSTD::swap(__ptr_, __r.__ptr_); 4564 _VSTD::swap(__cntrl_, __r.__cntrl_); 4565} 4566 4567template<class _Tp> 4568inline _LIBCPP_INLINE_VISIBILITY 4569void 4570shared_ptr<_Tp>::reset() _NOEXCEPT 4571{ 4572 shared_ptr().swap(*this); 4573} 4574 4575template<class _Tp> 4576template<class _Yp> 4577inline _LIBCPP_INLINE_VISIBILITY 4578typename enable_if 4579< 4580 is_convertible<_Yp*, _Tp*>::value, 4581 void 4582>::type 4583shared_ptr<_Tp>::reset(_Yp* __p) 4584{ 4585 shared_ptr(__p).swap(*this); 4586} 4587 4588template<class _Tp> 4589template<class _Yp, class _Dp> 4590inline _LIBCPP_INLINE_VISIBILITY 4591typename enable_if 4592< 4593 is_convertible<_Yp*, _Tp*>::value, 4594 void 4595>::type 4596shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) 4597{ 4598 shared_ptr(__p, __d).swap(*this); 4599} 4600 4601template<class _Tp> 4602template<class _Yp, class _Dp, class _Alloc> 4603inline _LIBCPP_INLINE_VISIBILITY 4604typename enable_if 4605< 4606 is_convertible<_Yp*, _Tp*>::value, 4607 void 4608>::type 4609shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) 4610{ 4611 shared_ptr(__p, __d, __a).swap(*this); 4612} 4613 4614#ifndef _LIBCPP_HAS_NO_VARIADICS 4615 4616template<class _Tp, class ..._Args> 4617inline _LIBCPP_INLINE_VISIBILITY 4618typename enable_if 4619< 4620 !is_array<_Tp>::value, 4621 shared_ptr<_Tp> 4622>::type 4623make_shared(_Args&& ...__args) 4624{ 4625 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...); 4626} 4627 4628template<class _Tp, class _Alloc, class ..._Args> 4629inline _LIBCPP_INLINE_VISIBILITY 4630typename enable_if 4631< 4632 !is_array<_Tp>::value, 4633 shared_ptr<_Tp> 4634>::type 4635allocate_shared(const _Alloc& __a, _Args&& ...__args) 4636{ 4637 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...); 4638} 4639 4640#else // _LIBCPP_HAS_NO_VARIADICS 4641 4642template<class _Tp> 4643inline _LIBCPP_INLINE_VISIBILITY 4644shared_ptr<_Tp> 4645make_shared() 4646{ 4647 return shared_ptr<_Tp>::make_shared(); 4648} 4649 4650template<class _Tp, class _A0> 4651inline _LIBCPP_INLINE_VISIBILITY 4652shared_ptr<_Tp> 4653make_shared(_A0& __a0) 4654{ 4655 return shared_ptr<_Tp>::make_shared(__a0); 4656} 4657 4658template<class _Tp, class _A0, class _A1> 4659inline _LIBCPP_INLINE_VISIBILITY 4660shared_ptr<_Tp> 4661make_shared(_A0& __a0, _A1& __a1) 4662{ 4663 return shared_ptr<_Tp>::make_shared(__a0, __a1); 4664} 4665 4666template<class _Tp, class _A0, class _A1, class _A2> 4667inline _LIBCPP_INLINE_VISIBILITY 4668shared_ptr<_Tp> 4669make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4670{ 4671 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); 4672} 4673 4674template<class _Tp, class _Alloc> 4675inline _LIBCPP_INLINE_VISIBILITY 4676shared_ptr<_Tp> 4677allocate_shared(const _Alloc& __a) 4678{ 4679 return shared_ptr<_Tp>::allocate_shared(__a); 4680} 4681 4682template<class _Tp, class _Alloc, class _A0> 4683inline _LIBCPP_INLINE_VISIBILITY 4684shared_ptr<_Tp> 4685allocate_shared(const _Alloc& __a, _A0& __a0) 4686{ 4687 return shared_ptr<_Tp>::allocate_shared(__a, __a0); 4688} 4689 4690template<class _Tp, class _Alloc, class _A0, class _A1> 4691inline _LIBCPP_INLINE_VISIBILITY 4692shared_ptr<_Tp> 4693allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4694{ 4695 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); 4696} 4697 4698template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> 4699inline _LIBCPP_INLINE_VISIBILITY 4700shared_ptr<_Tp> 4701allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4702{ 4703 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); 4704} 4705 4706#endif // _LIBCPP_HAS_NO_VARIADICS 4707 4708template<class _Tp, class _Up> 4709inline _LIBCPP_INLINE_VISIBILITY 4710bool 4711operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4712{ 4713 return __x.get() == __y.get(); 4714} 4715 4716template<class _Tp, class _Up> 4717inline _LIBCPP_INLINE_VISIBILITY 4718bool 4719operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4720{ 4721 return !(__x == __y); 4722} 4723 4724template<class _Tp, class _Up> 4725inline _LIBCPP_INLINE_VISIBILITY 4726bool 4727operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4728{ 4729 typedef typename common_type<_Tp*, _Up*>::type _V; 4730 return less<_V>()(__x.get(), __y.get()); 4731} 4732 4733template<class _Tp, class _Up> 4734inline _LIBCPP_INLINE_VISIBILITY 4735bool 4736operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4737{ 4738 return __y < __x; 4739} 4740 4741template<class _Tp, class _Up> 4742inline _LIBCPP_INLINE_VISIBILITY 4743bool 4744operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4745{ 4746 return !(__y < __x); 4747} 4748 4749template<class _Tp, class _Up> 4750inline _LIBCPP_INLINE_VISIBILITY 4751bool 4752operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4753{ 4754 return !(__x < __y); 4755} 4756 4757template<class _Tp> 4758inline _LIBCPP_INLINE_VISIBILITY 4759bool 4760operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4761{ 4762 return !__x; 4763} 4764 4765template<class _Tp> 4766inline _LIBCPP_INLINE_VISIBILITY 4767bool 4768operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4769{ 4770 return !__x; 4771} 4772 4773template<class _Tp> 4774inline _LIBCPP_INLINE_VISIBILITY 4775bool 4776operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4777{ 4778 return static_cast<bool>(__x); 4779} 4780 4781template<class _Tp> 4782inline _LIBCPP_INLINE_VISIBILITY 4783bool 4784operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4785{ 4786 return static_cast<bool>(__x); 4787} 4788 4789template<class _Tp> 4790inline _LIBCPP_INLINE_VISIBILITY 4791bool 4792operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4793{ 4794 return less<_Tp*>()(__x.get(), nullptr); 4795} 4796 4797template<class _Tp> 4798inline _LIBCPP_INLINE_VISIBILITY 4799bool 4800operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4801{ 4802 return less<_Tp*>()(nullptr, __x.get()); 4803} 4804 4805template<class _Tp> 4806inline _LIBCPP_INLINE_VISIBILITY 4807bool 4808operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4809{ 4810 return nullptr < __x; 4811} 4812 4813template<class _Tp> 4814inline _LIBCPP_INLINE_VISIBILITY 4815bool 4816operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4817{ 4818 return __x < nullptr; 4819} 4820 4821template<class _Tp> 4822inline _LIBCPP_INLINE_VISIBILITY 4823bool 4824operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4825{ 4826 return !(nullptr < __x); 4827} 4828 4829template<class _Tp> 4830inline _LIBCPP_INLINE_VISIBILITY 4831bool 4832operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4833{ 4834 return !(__x < nullptr); 4835} 4836 4837template<class _Tp> 4838inline _LIBCPP_INLINE_VISIBILITY 4839bool 4840operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4841{ 4842 return !(__x < nullptr); 4843} 4844 4845template<class _Tp> 4846inline _LIBCPP_INLINE_VISIBILITY 4847bool 4848operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4849{ 4850 return !(nullptr < __x); 4851} 4852 4853template<class _Tp> 4854inline _LIBCPP_INLINE_VISIBILITY 4855void 4856swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT 4857{ 4858 __x.swap(__y); 4859} 4860 4861template<class _Tp, class _Up> 4862inline _LIBCPP_INLINE_VISIBILITY 4863typename enable_if 4864< 4865 !is_array<_Tp>::value && !is_array<_Up>::value, 4866 shared_ptr<_Tp> 4867>::type 4868static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4869{ 4870 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); 4871} 4872 4873template<class _Tp, class _Up> 4874inline _LIBCPP_INLINE_VISIBILITY 4875typename enable_if 4876< 4877 !is_array<_Tp>::value && !is_array<_Up>::value, 4878 shared_ptr<_Tp> 4879>::type 4880dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4881{ 4882 _Tp* __p = dynamic_cast<_Tp*>(__r.get()); 4883 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); 4884} 4885 4886template<class _Tp, class _Up> 4887typename enable_if 4888< 4889 is_array<_Tp>::value == is_array<_Up>::value, 4890 shared_ptr<_Tp> 4891>::type 4892const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4893{ 4894 typedef typename remove_extent<_Tp>::type _RTp; 4895 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get())); 4896} 4897 4898#ifndef _LIBCPP_NO_RTTI 4899 4900template<class _Dp, class _Tp> 4901inline _LIBCPP_INLINE_VISIBILITY 4902_Dp* 4903get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT 4904{ 4905 return __p.template __get_deleter<_Dp>(); 4906} 4907 4908#endif // _LIBCPP_NO_RTTI 4909 4910template<class _Tp> 4911class _LIBCPP_TYPE_VIS_ONLY weak_ptr 4912{ 4913public: 4914 typedef _Tp element_type; 4915private: 4916 element_type* __ptr_; 4917 __shared_weak_count* __cntrl_; 4918 4919public: 4920 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT; 4921 template<class _Yp> weak_ptr(shared_ptr<_Yp> const& __r, 4922 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4923 _NOEXCEPT; 4924 weak_ptr(weak_ptr const& __r) _NOEXCEPT; 4925 template<class _Yp> weak_ptr(weak_ptr<_Yp> const& __r, 4926 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4927 _NOEXCEPT; 4928 4929#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4930 weak_ptr(weak_ptr&& __r) _NOEXCEPT; 4931 template<class _Yp> weak_ptr(weak_ptr<_Yp>&& __r, 4932 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4933 _NOEXCEPT; 4934#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4935 ~weak_ptr(); 4936 4937 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT; 4938 template<class _Yp> 4939 typename enable_if 4940 < 4941 is_convertible<_Yp*, element_type*>::value, 4942 weak_ptr& 4943 >::type 4944 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT; 4945 4946#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4947 4948 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT; 4949 template<class _Yp> 4950 typename enable_if 4951 < 4952 is_convertible<_Yp*, element_type*>::value, 4953 weak_ptr& 4954 >::type 4955 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT; 4956 4957#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4958 4959 template<class _Yp> 4960 typename enable_if 4961 < 4962 is_convertible<_Yp*, element_type*>::value, 4963 weak_ptr& 4964 >::type 4965 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT; 4966 4967 void swap(weak_ptr& __r) _NOEXCEPT; 4968 void reset() _NOEXCEPT; 4969 4970 _LIBCPP_INLINE_VISIBILITY 4971 long use_count() const _NOEXCEPT 4972 {return __cntrl_ ? __cntrl_->use_count() : 0;} 4973 _LIBCPP_INLINE_VISIBILITY 4974 bool expired() const _NOEXCEPT 4975 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} 4976 shared_ptr<_Tp> lock() const _NOEXCEPT; 4977 template<class _Up> 4978 _LIBCPP_INLINE_VISIBILITY 4979 bool owner_before(const shared_ptr<_Up>& __r) const 4980 {return __cntrl_ < __r.__cntrl_;} 4981 template<class _Up> 4982 _LIBCPP_INLINE_VISIBILITY 4983 bool owner_before(const weak_ptr<_Up>& __r) const 4984 {return __cntrl_ < __r.__cntrl_;} 4985 4986 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 4987 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr; 4988}; 4989 4990template<class _Tp> 4991inline _LIBCPP_INLINE_VISIBILITY 4992_LIBCPP_CONSTEXPR 4993weak_ptr<_Tp>::weak_ptr() _NOEXCEPT 4994 : __ptr_(0), 4995 __cntrl_(0) 4996{ 4997} 4998 4999template<class _Tp> 5000inline _LIBCPP_INLINE_VISIBILITY 5001weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT 5002 : __ptr_(__r.__ptr_), 5003 __cntrl_(__r.__cntrl_) 5004{ 5005 if (__cntrl_) 5006 __cntrl_->__add_weak(); 5007} 5008 5009template<class _Tp> 5010template<class _Yp> 5011inline _LIBCPP_INLINE_VISIBILITY 5012weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, 5013 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5014 _NOEXCEPT 5015 : __ptr_(__r.__ptr_), 5016 __cntrl_(__r.__cntrl_) 5017{ 5018 if (__cntrl_) 5019 __cntrl_->__add_weak(); 5020} 5021 5022template<class _Tp> 5023template<class _Yp> 5024inline _LIBCPP_INLINE_VISIBILITY 5025weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, 5026 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5027 _NOEXCEPT 5028 : __ptr_(__r.__ptr_), 5029 __cntrl_(__r.__cntrl_) 5030{ 5031 if (__cntrl_) 5032 __cntrl_->__add_weak(); 5033} 5034 5035#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5036 5037template<class _Tp> 5038inline _LIBCPP_INLINE_VISIBILITY 5039weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT 5040 : __ptr_(__r.__ptr_), 5041 __cntrl_(__r.__cntrl_) 5042{ 5043 __r.__ptr_ = 0; 5044 __r.__cntrl_ = 0; 5045} 5046 5047template<class _Tp> 5048template<class _Yp> 5049inline _LIBCPP_INLINE_VISIBILITY 5050weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r, 5051 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5052 _NOEXCEPT 5053 : __ptr_(__r.__ptr_), 5054 __cntrl_(__r.__cntrl_) 5055{ 5056 __r.__ptr_ = 0; 5057 __r.__cntrl_ = 0; 5058} 5059 5060#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5061 5062template<class _Tp> 5063weak_ptr<_Tp>::~weak_ptr() 5064{ 5065 if (__cntrl_) 5066 __cntrl_->__release_weak(); 5067} 5068 5069template<class _Tp> 5070inline _LIBCPP_INLINE_VISIBILITY 5071weak_ptr<_Tp>& 5072weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT 5073{ 5074 weak_ptr(__r).swap(*this); 5075 return *this; 5076} 5077 5078template<class _Tp> 5079template<class _Yp> 5080inline _LIBCPP_INLINE_VISIBILITY 5081typename enable_if 5082< 5083 is_convertible<_Yp*, _Tp*>::value, 5084 weak_ptr<_Tp>& 5085>::type 5086weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT 5087{ 5088 weak_ptr(__r).swap(*this); 5089 return *this; 5090} 5091 5092#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5093 5094template<class _Tp> 5095inline _LIBCPP_INLINE_VISIBILITY 5096weak_ptr<_Tp>& 5097weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT 5098{ 5099 weak_ptr(_VSTD::move(__r)).swap(*this); 5100 return *this; 5101} 5102 5103template<class _Tp> 5104template<class _Yp> 5105inline _LIBCPP_INLINE_VISIBILITY 5106typename enable_if 5107< 5108 is_convertible<_Yp*, _Tp*>::value, 5109 weak_ptr<_Tp>& 5110>::type 5111weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT 5112{ 5113 weak_ptr(_VSTD::move(__r)).swap(*this); 5114 return *this; 5115} 5116 5117#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5118 5119template<class _Tp> 5120template<class _Yp> 5121inline _LIBCPP_INLINE_VISIBILITY 5122typename enable_if 5123< 5124 is_convertible<_Yp*, _Tp*>::value, 5125 weak_ptr<_Tp>& 5126>::type 5127weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT 5128{ 5129 weak_ptr(__r).swap(*this); 5130 return *this; 5131} 5132 5133template<class _Tp> 5134inline _LIBCPP_INLINE_VISIBILITY 5135void 5136weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT 5137{ 5138 _VSTD::swap(__ptr_, __r.__ptr_); 5139 _VSTD::swap(__cntrl_, __r.__cntrl_); 5140} 5141 5142template<class _Tp> 5143inline _LIBCPP_INLINE_VISIBILITY 5144void 5145swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT 5146{ 5147 __x.swap(__y); 5148} 5149 5150template<class _Tp> 5151inline _LIBCPP_INLINE_VISIBILITY 5152void 5153weak_ptr<_Tp>::reset() _NOEXCEPT 5154{ 5155 weak_ptr().swap(*this); 5156} 5157 5158template<class _Tp> 5159template<class _Yp> 5160shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, 5161 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 5162 : __ptr_(__r.__ptr_), 5163 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) 5164{ 5165 if (__cntrl_ == 0) 5166#ifndef _LIBCPP_NO_EXCEPTIONS 5167 throw bad_weak_ptr(); 5168#else 5169 assert(!"bad_weak_ptr"); 5170#endif 5171} 5172 5173template<class _Tp> 5174shared_ptr<_Tp> 5175weak_ptr<_Tp>::lock() const _NOEXCEPT 5176{ 5177 shared_ptr<_Tp> __r; 5178 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; 5179 if (__r.__cntrl_) 5180 __r.__ptr_ = __ptr_; 5181 return __r; 5182} 5183 5184template <class _Tp> struct owner_less; 5185 5186template <class _Tp> 5187struct _LIBCPP_TYPE_VIS_ONLY owner_less<shared_ptr<_Tp> > 5188 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> 5189{ 5190 typedef bool result_type; 5191 _LIBCPP_INLINE_VISIBILITY 5192 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5193 {return __x.owner_before(__y);} 5194 _LIBCPP_INLINE_VISIBILITY 5195 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5196 {return __x.owner_before(__y);} 5197 _LIBCPP_INLINE_VISIBILITY 5198 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5199 {return __x.owner_before(__y);} 5200}; 5201 5202template <class _Tp> 5203struct _LIBCPP_TYPE_VIS_ONLY owner_less<weak_ptr<_Tp> > 5204 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> 5205{ 5206 typedef bool result_type; 5207 _LIBCPP_INLINE_VISIBILITY 5208 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5209 {return __x.owner_before(__y);} 5210 _LIBCPP_INLINE_VISIBILITY 5211 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5212 {return __x.owner_before(__y);} 5213 _LIBCPP_INLINE_VISIBILITY 5214 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5215 {return __x.owner_before(__y);} 5216}; 5217 5218template<class _Tp> 5219class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this 5220{ 5221 mutable weak_ptr<_Tp> __weak_this_; 5222protected: 5223 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 5224 enable_shared_from_this() _NOEXCEPT {} 5225 _LIBCPP_INLINE_VISIBILITY 5226 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {} 5227 _LIBCPP_INLINE_VISIBILITY 5228 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT 5229 {return *this;} 5230 _LIBCPP_INLINE_VISIBILITY 5231 ~enable_shared_from_this() {} 5232public: 5233 _LIBCPP_INLINE_VISIBILITY 5234 shared_ptr<_Tp> shared_from_this() 5235 {return shared_ptr<_Tp>(__weak_this_);} 5236 _LIBCPP_INLINE_VISIBILITY 5237 shared_ptr<_Tp const> shared_from_this() const 5238 {return shared_ptr<const _Tp>(__weak_this_);} 5239 5240 template <class _Up> friend class shared_ptr; 5241}; 5242 5243template <class _Tp> 5244struct _LIBCPP_TYPE_VIS_ONLY hash<shared_ptr<_Tp> > 5245{ 5246 typedef shared_ptr<_Tp> argument_type; 5247 typedef size_t result_type; 5248 _LIBCPP_INLINE_VISIBILITY 5249 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 5250 { 5251 return hash<_Tp*>()(__ptr.get()); 5252 } 5253}; 5254 5255template<class _CharT, class _Traits, class _Yp> 5256inline _LIBCPP_INLINE_VISIBILITY 5257basic_ostream<_CharT, _Traits>& 5258operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p); 5259 5260#if __has_feature(cxx_atomic) 5261 5262class _LIBCPP_TYPE_VIS __sp_mut 5263{ 5264 void* __lx; 5265public: 5266 void lock() _NOEXCEPT; 5267 void unlock() _NOEXCEPT; 5268 5269private: 5270 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT; 5271 __sp_mut(const __sp_mut&); 5272 __sp_mut& operator=(const __sp_mut&); 5273 5274 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5275}; 5276 5277_LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5278 5279template <class _Tp> 5280inline _LIBCPP_INLINE_VISIBILITY 5281bool 5282atomic_is_lock_free(const shared_ptr<_Tp>*) 5283{ 5284 return false; 5285} 5286 5287template <class _Tp> 5288shared_ptr<_Tp> 5289atomic_load(const shared_ptr<_Tp>* __p) 5290{ 5291 __sp_mut& __m = __get_sp_mut(__p); 5292 __m.lock(); 5293 shared_ptr<_Tp> __q = *__p; 5294 __m.unlock(); 5295 return __q; 5296} 5297 5298template <class _Tp> 5299inline _LIBCPP_INLINE_VISIBILITY 5300shared_ptr<_Tp> 5301atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) 5302{ 5303 return atomic_load(__p); 5304} 5305 5306template <class _Tp> 5307void 5308atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5309{ 5310 __sp_mut& __m = __get_sp_mut(__p); 5311 __m.lock(); 5312 __p->swap(__r); 5313 __m.unlock(); 5314} 5315 5316template <class _Tp> 5317inline _LIBCPP_INLINE_VISIBILITY 5318void 5319atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5320{ 5321 atomic_store(__p, __r); 5322} 5323 5324template <class _Tp> 5325shared_ptr<_Tp> 5326atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5327{ 5328 __sp_mut& __m = __get_sp_mut(__p); 5329 __m.lock(); 5330 __p->swap(__r); 5331 __m.unlock(); 5332 return __r; 5333} 5334 5335template <class _Tp> 5336inline _LIBCPP_INLINE_VISIBILITY 5337shared_ptr<_Tp> 5338atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5339{ 5340 return atomic_exchange(__p, __r); 5341} 5342 5343template <class _Tp> 5344bool 5345atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5346{ 5347 __sp_mut& __m = __get_sp_mut(__p); 5348 __m.lock(); 5349 if (__p->__owner_equivalent(*__v)) 5350 { 5351 *__p = __w; 5352 __m.unlock(); 5353 return true; 5354 } 5355 *__v = *__p; 5356 __m.unlock(); 5357 return false; 5358} 5359 5360template <class _Tp> 5361inline _LIBCPP_INLINE_VISIBILITY 5362bool 5363atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5364{ 5365 return atomic_compare_exchange_strong(__p, __v, __w); 5366} 5367 5368template <class _Tp> 5369inline _LIBCPP_INLINE_VISIBILITY 5370bool 5371atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5372 shared_ptr<_Tp> __w, memory_order, memory_order) 5373{ 5374 return atomic_compare_exchange_strong(__p, __v, __w); 5375} 5376 5377template <class _Tp> 5378inline _LIBCPP_INLINE_VISIBILITY 5379bool 5380atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5381 shared_ptr<_Tp> __w, memory_order, memory_order) 5382{ 5383 return atomic_compare_exchange_weak(__p, __v, __w); 5384} 5385 5386#endif // __has_feature(cxx_atomic) 5387 5388//enum class 5389struct _LIBCPP_TYPE_VIS pointer_safety 5390{ 5391 enum __lx 5392 { 5393 relaxed, 5394 preferred, 5395 strict 5396 }; 5397 5398 __lx __v_; 5399 5400 _LIBCPP_INLINE_VISIBILITY 5401 pointer_safety(__lx __v) : __v_(__v) {} 5402 _LIBCPP_INLINE_VISIBILITY 5403 operator int() const {return __v_;} 5404}; 5405 5406_LIBCPP_FUNC_VIS void declare_reachable(void* __p); 5407_LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n); 5408_LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n); 5409_LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT; 5410_LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p); 5411 5412template <class _Tp> 5413inline _LIBCPP_INLINE_VISIBILITY 5414_Tp* 5415undeclare_reachable(_Tp* __p) 5416{ 5417 return static_cast<_Tp*>(__undeclare_reachable(__p)); 5418} 5419 5420_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); 5421 5422_LIBCPP_END_NAMESPACE_STD 5423 5424#endif // _LIBCPP_MEMORY 5425