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 class = typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value>::type 2671 > 2672 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(_Pp __p) _NOEXCEPT 2673 : __ptr_(__p) 2674 { 2675 static_assert(!is_pointer<deleter_type>::value, 2676 "unique_ptr constructed with null function pointer deleter"); 2677 } 2678 2679 template <class _Pp, 2680 class = typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value>::type 2681 > 2682 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, typename conditional< 2683 is_reference<deleter_type>::value, 2684 deleter_type, 2685 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2686 _NOEXCEPT 2687 : __ptr_(__p, __d) {} 2688 2689 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename conditional< 2690 is_reference<deleter_type>::value, 2691 deleter_type, 2692 typename add_lvalue_reference<const deleter_type>::type>::type __d) 2693 _NOEXCEPT 2694 : __ptr_(pointer(), __d) {} 2695 2696 template <class _Pp, 2697 class = typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value>::type 2698 > 2699 _LIBCPP_INLINE_VISIBILITY unique_ptr(_Pp __p, typename remove_reference<deleter_type>::type&& __d) 2700 _NOEXCEPT 2701 : __ptr_(__p, _VSTD::move(__d)) 2702 { 2703 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2704 } 2705 2706 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename remove_reference<deleter_type>::type&& __d) 2707 _NOEXCEPT 2708 : __ptr_(pointer(), _VSTD::move(__d)) 2709 { 2710 static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); 2711 } 2712 2713 _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT 2714 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2715 2716 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT 2717 { 2718 reset(__u.release()); 2719 __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); 2720 return *this; 2721 } 2722 2723 template <class _Up, class _Ep> 2724 _LIBCPP_INLINE_VISIBILITY 2725 unique_ptr(unique_ptr<_Up, _Ep>&& __u, 2726 typename enable_if 2727 < 2728 is_array<_Up>::value && 2729 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value 2730 && is_convertible<_Ep, deleter_type>::value && 2731 ( 2732 !is_reference<deleter_type>::value || 2733 is_same<deleter_type, _Ep>::value 2734 ), 2735 __nat 2736 >::type = __nat() 2737 ) _NOEXCEPT 2738 : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) {} 2739 2740 2741 template <class _Up, class _Ep> 2742 _LIBCPP_INLINE_VISIBILITY 2743 typename enable_if 2744 < 2745 is_array<_Up>::value && 2746 __same_or_less_cv_qualified<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && 2747 is_assignable<deleter_type&, _Ep&&>::value, 2748 unique_ptr& 2749 >::type 2750 operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT 2751 { 2752 reset(__u.release()); 2753 __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); 2754 return *this; 2755 } 2756#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2757 2758 _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) 2759 : __ptr_(__p) 2760 { 2761 static_assert(!is_pointer<deleter_type>::value, 2762 "unique_ptr constructed with null function pointer deleter"); 2763 } 2764 2765 _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) 2766 : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {} 2767 2768 _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, deleter_type __d) 2769 : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {} 2770 2771 _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() 2772 { 2773 return __rv<unique_ptr>(*this); 2774 } 2775 2776 _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) 2777 : __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {} 2778 2779 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(__rv<unique_ptr> __u) 2780 { 2781 reset(__u->release()); 2782 __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter()); 2783 return *this; 2784 } 2785 2786#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2787 _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} 2788 2789 _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT 2790 { 2791 reset(); 2792 return *this; 2793 } 2794 2795 _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator[](size_t __i) const 2796 {return __ptr_.first()[__i];} 2797 _LIBCPP_INLINE_VISIBILITY pointer get() const _NOEXCEPT {return __ptr_.first();} 2798 _LIBCPP_INLINE_VISIBILITY _Dp_reference get_deleter() _NOEXCEPT 2799 {return __ptr_.second();} 2800 _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const _NOEXCEPT 2801 {return __ptr_.second();} 2802 _LIBCPP_INLINE_VISIBILITY 2803 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT 2804 {return __ptr_.first() != nullptr;} 2805 2806 _LIBCPP_INLINE_VISIBILITY pointer release() _NOEXCEPT 2807 { 2808 pointer __t = __ptr_.first(); 2809 __ptr_.first() = pointer(); 2810 return __t; 2811 } 2812 2813#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2814 template <class _Pp, 2815 class = typename enable_if<__same_or_less_cv_qualified<_Pp, pointer>::value>::type 2816 > 2817 _LIBCPP_INLINE_VISIBILITY void reset(_Pp __p) _NOEXCEPT 2818 { 2819 pointer __tmp = __ptr_.first(); 2820 __ptr_.first() = __p; 2821 if (__tmp) 2822 __ptr_.second()(__tmp); 2823 } 2824 _LIBCPP_INLINE_VISIBILITY void reset(nullptr_t) _NOEXCEPT 2825 { 2826 pointer __tmp = __ptr_.first(); 2827 __ptr_.first() = nullptr; 2828 if (__tmp) 2829 __ptr_.second()(__tmp); 2830 } 2831 _LIBCPP_INLINE_VISIBILITY void reset() _NOEXCEPT 2832 { 2833 pointer __tmp = __ptr_.first(); 2834 __ptr_.first() = nullptr; 2835 if (__tmp) 2836 __ptr_.second()(__tmp); 2837 } 2838#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2839 _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) 2840 { 2841 pointer __tmp = __ptr_.first(); 2842 __ptr_.first() = __p; 2843 if (__tmp) 2844 __ptr_.second()(__tmp); 2845 } 2846#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2847 2848 _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);} 2849private: 2850 2851#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 2852 template <class _Up> 2853 explicit unique_ptr(_Up); 2854 template <class _Up> 2855 unique_ptr(_Up __u, 2856 typename conditional< 2857 is_reference<deleter_type>::value, 2858 deleter_type, 2859 typename add_lvalue_reference<const deleter_type>::type>::type, 2860 typename enable_if 2861 < 2862 is_convertible<_Up, pointer>::value, 2863 __nat 2864 >::type = __nat()); 2865#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 2866}; 2867 2868template <class _Tp, class _Dp> 2869inline _LIBCPP_INLINE_VISIBILITY 2870void 2871swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} 2872 2873template <class _T1, class _D1, class _T2, class _D2> 2874inline _LIBCPP_INLINE_VISIBILITY 2875bool 2876operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} 2877 2878template <class _T1, class _D1, class _T2, class _D2> 2879inline _LIBCPP_INLINE_VISIBILITY 2880bool 2881operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} 2882 2883template <class _T1, class _D1, class _T2, class _D2> 2884inline _LIBCPP_INLINE_VISIBILITY 2885bool 2886operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) 2887{ 2888 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2889 typedef typename unique_ptr<_T2, _D2>::pointer _P2; 2890 typedef typename common_type<_P1, _P2>::type _V; 2891 return less<_V>()(__x.get(), __y.get()); 2892} 2893 2894template <class _T1, class _D1, class _T2, class _D2> 2895inline _LIBCPP_INLINE_VISIBILITY 2896bool 2897operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} 2898 2899template <class _T1, class _D1, class _T2, class _D2> 2900inline _LIBCPP_INLINE_VISIBILITY 2901bool 2902operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} 2903 2904template <class _T1, class _D1, class _T2, class _D2> 2905inline _LIBCPP_INLINE_VISIBILITY 2906bool 2907operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} 2908 2909template <class _T1, class _D1> 2910inline _LIBCPP_INLINE_VISIBILITY 2911bool 2912operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2913{ 2914 return !__x; 2915} 2916 2917template <class _T1, class _D1> 2918inline _LIBCPP_INLINE_VISIBILITY 2919bool 2920operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2921{ 2922 return !__x; 2923} 2924 2925template <class _T1, class _D1> 2926inline _LIBCPP_INLINE_VISIBILITY 2927bool 2928operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT 2929{ 2930 return static_cast<bool>(__x); 2931} 2932 2933template <class _T1, class _D1> 2934inline _LIBCPP_INLINE_VISIBILITY 2935bool 2936operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT 2937{ 2938 return static_cast<bool>(__x); 2939} 2940 2941template <class _T1, class _D1> 2942inline _LIBCPP_INLINE_VISIBILITY 2943bool 2944operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2945{ 2946 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2947 return less<_P1>()(__x.get(), nullptr); 2948} 2949 2950template <class _T1, class _D1> 2951inline _LIBCPP_INLINE_VISIBILITY 2952bool 2953operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2954{ 2955 typedef typename unique_ptr<_T1, _D1>::pointer _P1; 2956 return less<_P1>()(nullptr, __x.get()); 2957} 2958 2959template <class _T1, class _D1> 2960inline _LIBCPP_INLINE_VISIBILITY 2961bool 2962operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2963{ 2964 return nullptr < __x; 2965} 2966 2967template <class _T1, class _D1> 2968inline _LIBCPP_INLINE_VISIBILITY 2969bool 2970operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2971{ 2972 return __x < nullptr; 2973} 2974 2975template <class _T1, class _D1> 2976inline _LIBCPP_INLINE_VISIBILITY 2977bool 2978operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2979{ 2980 return !(nullptr < __x); 2981} 2982 2983template <class _T1, class _D1> 2984inline _LIBCPP_INLINE_VISIBILITY 2985bool 2986operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 2987{ 2988 return !(__x < nullptr); 2989} 2990 2991template <class _T1, class _D1> 2992inline _LIBCPP_INLINE_VISIBILITY 2993bool 2994operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) 2995{ 2996 return !(__x < nullptr); 2997} 2998 2999template <class _T1, class _D1> 3000inline _LIBCPP_INLINE_VISIBILITY 3001bool 3002operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) 3003{ 3004 return !(nullptr < __x); 3005} 3006 3007#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3008 3009template <class _Tp, class _Dp> 3010inline _LIBCPP_INLINE_VISIBILITY 3011unique_ptr<_Tp, _Dp> 3012move(unique_ptr<_Tp, _Dp>& __t) 3013{ 3014 return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t)); 3015} 3016 3017#endif 3018 3019#if _LIBCPP_STD_VER > 11 3020 3021template<class _Tp> 3022struct __unique_if 3023{ 3024 typedef unique_ptr<_Tp> __unique_single; 3025}; 3026 3027template<class _Tp> 3028struct __unique_if<_Tp[]> 3029{ 3030 typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; 3031}; 3032 3033template<class _Tp, size_t _Np> 3034struct __unique_if<_Tp[_Np]> 3035{ 3036 typedef void __unique_array_known_bound; 3037}; 3038 3039template<class _Tp, class... _Args> 3040inline _LIBCPP_INLINE_VISIBILITY 3041typename __unique_if<_Tp>::__unique_single 3042make_unique(_Args&&... __args) 3043{ 3044 return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...)); 3045} 3046 3047template<class _Tp> 3048inline _LIBCPP_INLINE_VISIBILITY 3049typename __unique_if<_Tp>::__unique_array_unknown_bound 3050make_unique(size_t __n) 3051{ 3052 typedef typename remove_extent<_Tp>::type _Up; 3053 return unique_ptr<_Tp>(new _Up[__n]()); 3054} 3055 3056template<class _Tp, class... _Args> 3057 typename __unique_if<_Tp>::__unique_array_known_bound 3058 make_unique(_Args&&...) = delete; 3059 3060#endif // _LIBCPP_STD_VER > 11 3061 3062template <class _Tp> struct hash; 3063 3064template <class _Size> 3065inline _LIBCPP_INLINE_VISIBILITY 3066_Size 3067__loadword(const void* __p) 3068{ 3069 _Size __r; 3070 std::memcpy(&__r, __p, sizeof(__r)); 3071 return __r; 3072} 3073 3074// We use murmur2 when size_t is 32 bits, and cityhash64 when size_t 3075// is 64 bits. This is because cityhash64 uses 64bit x 64bit 3076// multiplication, which can be very slow on 32-bit systems. 3077template <class _Size, size_t = sizeof(_Size)*__CHAR_BIT__> 3078struct __murmur2_or_cityhash; 3079 3080template <class _Size> 3081struct __murmur2_or_cityhash<_Size, 32> 3082{ 3083 _Size operator()(const void* __key, _Size __len); 3084}; 3085 3086// murmur2 3087template <class _Size> 3088_Size 3089__murmur2_or_cityhash<_Size, 32>::operator()(const void* __key, _Size __len) 3090{ 3091 const _Size __m = 0x5bd1e995; 3092 const _Size __r = 24; 3093 _Size __h = __len; 3094 const unsigned char* __data = static_cast<const unsigned char*>(__key); 3095 for (; __len >= 4; __data += 4, __len -= 4) 3096 { 3097 _Size __k = __loadword<_Size>(__data); 3098 __k *= __m; 3099 __k ^= __k >> __r; 3100 __k *= __m; 3101 __h *= __m; 3102 __h ^= __k; 3103 } 3104 switch (__len) 3105 { 3106 case 3: 3107 __h ^= __data[2] << 16; 3108 case 2: 3109 __h ^= __data[1] << 8; 3110 case 1: 3111 __h ^= __data[0]; 3112 __h *= __m; 3113 } 3114 __h ^= __h >> 13; 3115 __h *= __m; 3116 __h ^= __h >> 15; 3117 return __h; 3118} 3119 3120template <class _Size> 3121struct __murmur2_or_cityhash<_Size, 64> 3122{ 3123 _Size operator()(const void* __key, _Size __len); 3124 3125 private: 3126 // Some primes between 2^63 and 2^64. 3127 static const _Size __k0 = 0xc3a5c85c97cb3127ULL; 3128 static const _Size __k1 = 0xb492b66fbe98f273ULL; 3129 static const _Size __k2 = 0x9ae16a3b2f90404fULL; 3130 static const _Size __k3 = 0xc949d7c7509e6557ULL; 3131 3132 static _Size __rotate(_Size __val, int __shift) { 3133 return __shift == 0 ? __val : ((__val >> __shift) | (__val << (64 - __shift))); 3134 } 3135 3136 static _Size __rotate_by_at_least_1(_Size __val, int __shift) { 3137 return (__val >> __shift) | (__val << (64 - __shift)); 3138 } 3139 3140 static _Size __shift_mix(_Size __val) { 3141 return __val ^ (__val >> 47); 3142 } 3143 3144 static _Size __hash_len_16(_Size __u, _Size __v) { 3145 const _Size __mul = 0x9ddfea08eb382d69ULL; 3146 _Size __a = (__u ^ __v) * __mul; 3147 __a ^= (__a >> 47); 3148 _Size __b = (__v ^ __a) * __mul; 3149 __b ^= (__b >> 47); 3150 __b *= __mul; 3151 return __b; 3152 } 3153 3154 static _Size __hash_len_0_to_16(const char* __s, _Size __len) { 3155 if (__len > 8) { 3156 const _Size __a = __loadword<_Size>(__s); 3157 const _Size __b = __loadword<_Size>(__s + __len - 8); 3158 return __hash_len_16(__a, __rotate_by_at_least_1(__b + __len, __len)) ^ __b; 3159 } 3160 if (__len >= 4) { 3161 const uint32_t __a = __loadword<uint32_t>(__s); 3162 const uint32_t __b = __loadword<uint32_t>(__s + __len - 4); 3163 return __hash_len_16(__len + (__a << 3), __b); 3164 } 3165 if (__len > 0) { 3166 const unsigned char __a = __s[0]; 3167 const unsigned char __b = __s[__len >> 1]; 3168 const unsigned char __c = __s[__len - 1]; 3169 const uint32_t __y = static_cast<uint32_t>(__a) + 3170 (static_cast<uint32_t>(__b) << 8); 3171 const uint32_t __z = __len + (static_cast<uint32_t>(__c) << 2); 3172 return __shift_mix(__y * __k2 ^ __z * __k3) * __k2; 3173 } 3174 return __k2; 3175 } 3176 3177 static _Size __hash_len_17_to_32(const char *__s, _Size __len) { 3178 const _Size __a = __loadword<_Size>(__s) * __k1; 3179 const _Size __b = __loadword<_Size>(__s + 8); 3180 const _Size __c = __loadword<_Size>(__s + __len - 8) * __k2; 3181 const _Size __d = __loadword<_Size>(__s + __len - 16) * __k0; 3182 return __hash_len_16(__rotate(__a - __b, 43) + __rotate(__c, 30) + __d, 3183 __a + __rotate(__b ^ __k3, 20) - __c + __len); 3184 } 3185 3186 // Return a 16-byte hash for 48 bytes. Quick and dirty. 3187 // Callers do best to use "random-looking" values for a and b. 3188 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3189 _Size __w, _Size __x, _Size __y, _Size __z, _Size __a, _Size __b) { 3190 __a += __w; 3191 __b = __rotate(__b + __a + __z, 21); 3192 const _Size __c = __a; 3193 __a += __x; 3194 __a += __y; 3195 __b += __rotate(__a, 44); 3196 return pair<_Size, _Size>(__a + __z, __b + __c); 3197 } 3198 3199 // Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty. 3200 static pair<_Size, _Size> __weak_hash_len_32_with_seeds( 3201 const char* __s, _Size __a, _Size __b) { 3202 return __weak_hash_len_32_with_seeds(__loadword<_Size>(__s), 3203 __loadword<_Size>(__s + 8), 3204 __loadword<_Size>(__s + 16), 3205 __loadword<_Size>(__s + 24), 3206 __a, 3207 __b); 3208 } 3209 3210 // Return an 8-byte hash for 33 to 64 bytes. 3211 static _Size __hash_len_33_to_64(const char *__s, size_t __len) { 3212 _Size __z = __loadword<_Size>(__s + 24); 3213 _Size __a = __loadword<_Size>(__s) + 3214 (__len + __loadword<_Size>(__s + __len - 16)) * __k0; 3215 _Size __b = __rotate(__a + __z, 52); 3216 _Size __c = __rotate(__a, 37); 3217 __a += __loadword<_Size>(__s + 8); 3218 __c += __rotate(__a, 7); 3219 __a += __loadword<_Size>(__s + 16); 3220 _Size __vf = __a + __z; 3221 _Size __vs = __b + __rotate(__a, 31) + __c; 3222 __a = __loadword<_Size>(__s + 16) + __loadword<_Size>(__s + __len - 32); 3223 __z += __loadword<_Size>(__s + __len - 8); 3224 __b = __rotate(__a + __z, 52); 3225 __c = __rotate(__a, 37); 3226 __a += __loadword<_Size>(__s + __len - 24); 3227 __c += __rotate(__a, 7); 3228 __a += __loadword<_Size>(__s + __len - 16); 3229 _Size __wf = __a + __z; 3230 _Size __ws = __b + __rotate(__a, 31) + __c; 3231 _Size __r = __shift_mix((__vf + __ws) * __k2 + (__wf + __vs) * __k0); 3232 return __shift_mix(__r * __k0 + __vs) * __k2; 3233 } 3234}; 3235 3236// cityhash64 3237template <class _Size> 3238_Size 3239__murmur2_or_cityhash<_Size, 64>::operator()(const void* __key, _Size __len) 3240{ 3241 const char* __s = static_cast<const char*>(__key); 3242 if (__len <= 32) { 3243 if (__len <= 16) { 3244 return __hash_len_0_to_16(__s, __len); 3245 } else { 3246 return __hash_len_17_to_32(__s, __len); 3247 } 3248 } else if (__len <= 64) { 3249 return __hash_len_33_to_64(__s, __len); 3250 } 3251 3252 // For strings over 64 bytes we hash the end first, and then as we 3253 // loop we keep 56 bytes of state: v, w, x, y, and z. 3254 _Size __x = __loadword<_Size>(__s + __len - 40); 3255 _Size __y = __loadword<_Size>(__s + __len - 16) + 3256 __loadword<_Size>(__s + __len - 56); 3257 _Size __z = __hash_len_16(__loadword<_Size>(__s + __len - 48) + __len, 3258 __loadword<_Size>(__s + __len - 24)); 3259 pair<_Size, _Size> __v = __weak_hash_len_32_with_seeds(__s + __len - 64, __len, __z); 3260 pair<_Size, _Size> __w = __weak_hash_len_32_with_seeds(__s + __len - 32, __y + __k1, __x); 3261 __x = __x * __k1 + __loadword<_Size>(__s); 3262 3263 // Decrease len to the nearest multiple of 64, and operate on 64-byte chunks. 3264 __len = (__len - 1) & ~static_cast<_Size>(63); 3265 do { 3266 __x = __rotate(__x + __y + __v.first + __loadword<_Size>(__s + 8), 37) * __k1; 3267 __y = __rotate(__y + __v.second + __loadword<_Size>(__s + 48), 42) * __k1; 3268 __x ^= __w.second; 3269 __y += __v.first + __loadword<_Size>(__s + 40); 3270 __z = __rotate(__z + __w.first, 33) * __k1; 3271 __v = __weak_hash_len_32_with_seeds(__s, __v.second * __k1, __x + __w.first); 3272 __w = __weak_hash_len_32_with_seeds(__s + 32, __z + __w.second, 3273 __y + __loadword<_Size>(__s + 16)); 3274 std::swap(__z, __x); 3275 __s += 64; 3276 __len -= 64; 3277 } while (__len != 0); 3278 return __hash_len_16( 3279 __hash_len_16(__v.first, __w.first) + __shift_mix(__y) * __k1 + __z, 3280 __hash_len_16(__v.second, __w.second) + __x); 3281} 3282 3283template <class _Tp, size_t = sizeof(_Tp) / sizeof(size_t)> 3284struct __scalar_hash; 3285 3286template <class _Tp> 3287struct __scalar_hash<_Tp, 0> 3288 : public unary_function<_Tp, size_t> 3289{ 3290 _LIBCPP_INLINE_VISIBILITY 3291 size_t operator()(_Tp __v) const _NOEXCEPT 3292 { 3293 union 3294 { 3295 _Tp __t; 3296 size_t __a; 3297 } __u; 3298 __u.__a = 0; 3299 __u.__t = __v; 3300 return __u.__a; 3301 } 3302}; 3303 3304template <class _Tp> 3305struct __scalar_hash<_Tp, 1> 3306 : public unary_function<_Tp, size_t> 3307{ 3308 _LIBCPP_INLINE_VISIBILITY 3309 size_t operator()(_Tp __v) const _NOEXCEPT 3310 { 3311 union 3312 { 3313 _Tp __t; 3314 size_t __a; 3315 } __u; 3316 __u.__t = __v; 3317 return __u.__a; 3318 } 3319}; 3320 3321template <class _Tp> 3322struct __scalar_hash<_Tp, 2> 3323 : public unary_function<_Tp, size_t> 3324{ 3325 _LIBCPP_INLINE_VISIBILITY 3326 size_t operator()(_Tp __v) const _NOEXCEPT 3327 { 3328 union 3329 { 3330 _Tp __t; 3331 struct 3332 { 3333 size_t __a; 3334 size_t __b; 3335 }; 3336 } __u; 3337 __u.__t = __v; 3338 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3339 } 3340}; 3341 3342template <class _Tp> 3343struct __scalar_hash<_Tp, 3> 3344 : public unary_function<_Tp, size_t> 3345{ 3346 _LIBCPP_INLINE_VISIBILITY 3347 size_t operator()(_Tp __v) const _NOEXCEPT 3348 { 3349 union 3350 { 3351 _Tp __t; 3352 struct 3353 { 3354 size_t __a; 3355 size_t __b; 3356 size_t __c; 3357 }; 3358 } __u; 3359 __u.__t = __v; 3360 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3361 } 3362}; 3363 3364template <class _Tp> 3365struct __scalar_hash<_Tp, 4> 3366 : public unary_function<_Tp, size_t> 3367{ 3368 _LIBCPP_INLINE_VISIBILITY 3369 size_t operator()(_Tp __v) const _NOEXCEPT 3370 { 3371 union 3372 { 3373 _Tp __t; 3374 struct 3375 { 3376 size_t __a; 3377 size_t __b; 3378 size_t __c; 3379 size_t __d; 3380 }; 3381 } __u; 3382 __u.__t = __v; 3383 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3384 } 3385}; 3386 3387template<class _Tp> 3388struct _LIBCPP_TYPE_VIS_ONLY hash<_Tp*> 3389 : public unary_function<_Tp*, size_t> 3390{ 3391 _LIBCPP_INLINE_VISIBILITY 3392 size_t operator()(_Tp* __v) const _NOEXCEPT 3393 { 3394 union 3395 { 3396 _Tp* __t; 3397 size_t __a; 3398 } __u; 3399 __u.__t = __v; 3400 return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); 3401 } 3402}; 3403 3404template <class _Tp, class _Dp> 3405struct _LIBCPP_TYPE_VIS_ONLY hash<unique_ptr<_Tp, _Dp> > 3406{ 3407 typedef unique_ptr<_Tp, _Dp> argument_type; 3408 typedef size_t result_type; 3409 _LIBCPP_INLINE_VISIBILITY 3410 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 3411 { 3412 typedef typename argument_type::pointer pointer; 3413 return hash<pointer>()(__ptr.get()); 3414 } 3415}; 3416 3417struct __destruct_n 3418{ 3419private: 3420 size_t size; 3421 3422 template <class _Tp> 3423 _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT 3424 {for (size_t __i = 0; __i < size; ++__i, ++__p) __p->~_Tp();} 3425 3426 template <class _Tp> 3427 _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT 3428 {} 3429 3430 _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT 3431 {++size;} 3432 _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT 3433 {} 3434 3435 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT 3436 {size = __s;} 3437 _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT 3438 {} 3439public: 3440 _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT 3441 : size(__s) {} 3442 3443 template <class _Tp> 3444 _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT 3445 {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3446 3447 template <class _Tp> 3448 _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT 3449 {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3450 3451 template <class _Tp> 3452 _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT 3453 {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 3454}; 3455 3456template <class _Alloc> 3457class __allocator_destructor 3458{ 3459 typedef allocator_traits<_Alloc> __alloc_traits; 3460public: 3461 typedef typename __alloc_traits::pointer pointer; 3462 typedef typename __alloc_traits::size_type size_type; 3463private: 3464 _Alloc& __alloc_; 3465 size_type __s_; 3466public: 3467 _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) 3468 _NOEXCEPT 3469 : __alloc_(__a), __s_(__s) {} 3470 _LIBCPP_INLINE_VISIBILITY 3471 void operator()(pointer __p) _NOEXCEPT 3472 {__alloc_traits::deallocate(__alloc_, __p, __s_);} 3473}; 3474 3475template <class _InputIterator, class _ForwardIterator> 3476_ForwardIterator 3477uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) 3478{ 3479 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3480#ifndef _LIBCPP_NO_EXCEPTIONS 3481 _ForwardIterator __s = __r; 3482 try 3483 { 3484#endif 3485 for (; __f != __l; ++__f, ++__r) 3486 ::new(&*__r) value_type(*__f); 3487#ifndef _LIBCPP_NO_EXCEPTIONS 3488 } 3489 catch (...) 3490 { 3491 for (; __s != __r; ++__s) 3492 __s->~value_type(); 3493 throw; 3494 } 3495#endif 3496 return __r; 3497} 3498 3499template <class _InputIterator, class _Size, class _ForwardIterator> 3500_ForwardIterator 3501uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) 3502{ 3503 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3504#ifndef _LIBCPP_NO_EXCEPTIONS 3505 _ForwardIterator __s = __r; 3506 try 3507 { 3508#endif 3509 for (; __n > 0; ++__f, ++__r, --__n) 3510 ::new(&*__r) value_type(*__f); 3511#ifndef _LIBCPP_NO_EXCEPTIONS 3512 } 3513 catch (...) 3514 { 3515 for (; __s != __r; ++__s) 3516 __s->~value_type(); 3517 throw; 3518 } 3519#endif 3520 return __r; 3521} 3522 3523template <class _ForwardIterator, class _Tp> 3524void 3525uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) 3526{ 3527 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3528#ifndef _LIBCPP_NO_EXCEPTIONS 3529 _ForwardIterator __s = __f; 3530 try 3531 { 3532#endif 3533 for (; __f != __l; ++__f) 3534 ::new(&*__f) value_type(__x); 3535#ifndef _LIBCPP_NO_EXCEPTIONS 3536 } 3537 catch (...) 3538 { 3539 for (; __s != __f; ++__s) 3540 __s->~value_type(); 3541 throw; 3542 } 3543#endif 3544} 3545 3546template <class _ForwardIterator, class _Size, class _Tp> 3547_ForwardIterator 3548uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) 3549{ 3550 typedef typename iterator_traits<_ForwardIterator>::value_type value_type; 3551#ifndef _LIBCPP_NO_EXCEPTIONS 3552 _ForwardIterator __s = __f; 3553 try 3554 { 3555#endif 3556 for (; __n > 0; ++__f, --__n) 3557 ::new(&*__f) value_type(__x); 3558#ifndef _LIBCPP_NO_EXCEPTIONS 3559 } 3560 catch (...) 3561 { 3562 for (; __s != __f; ++__s) 3563 __s->~value_type(); 3564 throw; 3565 } 3566#endif 3567 return __f; 3568} 3569 3570class _LIBCPP_EXCEPTION_ABI bad_weak_ptr 3571 : public std::exception 3572{ 3573public: 3574 virtual ~bad_weak_ptr() _NOEXCEPT; 3575 virtual const char* what() const _NOEXCEPT; 3576}; 3577 3578template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 3579 3580class _LIBCPP_TYPE_VIS __shared_count 3581{ 3582 __shared_count(const __shared_count&); 3583 __shared_count& operator=(const __shared_count&); 3584 3585protected: 3586 long __shared_owners_; 3587 virtual ~__shared_count(); 3588private: 3589 virtual void __on_zero_shared() _NOEXCEPT = 0; 3590 3591public: 3592 _LIBCPP_INLINE_VISIBILITY 3593 explicit __shared_count(long __refs = 0) _NOEXCEPT 3594 : __shared_owners_(__refs) {} 3595 3596 void __add_shared() _NOEXCEPT; 3597 bool __release_shared() _NOEXCEPT; 3598 _LIBCPP_INLINE_VISIBILITY 3599 long use_count() const _NOEXCEPT {return __shared_owners_ + 1;} 3600}; 3601 3602class _LIBCPP_TYPE_VIS __shared_weak_count 3603 : private __shared_count 3604{ 3605 long __shared_weak_owners_; 3606 3607public: 3608 _LIBCPP_INLINE_VISIBILITY 3609 explicit __shared_weak_count(long __refs = 0) _NOEXCEPT 3610 : __shared_count(__refs), 3611 __shared_weak_owners_(__refs) {} 3612protected: 3613 virtual ~__shared_weak_count(); 3614 3615public: 3616 void __add_shared() _NOEXCEPT; 3617 void __add_weak() _NOEXCEPT; 3618 void __release_shared() _NOEXCEPT; 3619 void __release_weak() _NOEXCEPT; 3620 _LIBCPP_INLINE_VISIBILITY 3621 long use_count() const _NOEXCEPT {return __shared_count::use_count();} 3622 __shared_weak_count* lock() _NOEXCEPT; 3623 3624 // Define the function out only if we build static libc++ without RTTI. 3625 // Otherwise we may break clients who need to compile their projects with 3626 // -fno-rtti and yet link against a libc++.dylib compiled 3627 // without -fno-rtti. 3628#if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC) 3629 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3630#endif 3631private: 3632 virtual void __on_zero_shared_weak() _NOEXCEPT = 0; 3633}; 3634 3635template <class _Tp, class _Dp, class _Alloc> 3636class __shared_ptr_pointer 3637 : public __shared_weak_count 3638{ 3639 __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; 3640public: 3641 _LIBCPP_INLINE_VISIBILITY 3642 __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) 3643 : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {} 3644 3645#ifndef _LIBCPP_NO_RTTI 3646 virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; 3647#endif 3648 3649private: 3650 virtual void __on_zero_shared() _NOEXCEPT; 3651 virtual void __on_zero_shared_weak() _NOEXCEPT; 3652}; 3653 3654#ifndef _LIBCPP_NO_RTTI 3655 3656template <class _Tp, class _Dp, class _Alloc> 3657const void* 3658__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT 3659{ 3660 return __t == typeid(_Dp) ? &__data_.first().second() : 0; 3661} 3662 3663#endif // _LIBCPP_NO_RTTI 3664 3665template <class _Tp, class _Dp, class _Alloc> 3666void 3667__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT 3668{ 3669 __data_.first().second()(__data_.first().first()); 3670 __data_.first().second().~_Dp(); 3671} 3672 3673template <class _Tp, class _Dp, class _Alloc> 3674void 3675__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3676{ 3677 typename _Alloc::template rebind<__shared_ptr_pointer>::other __a(__data_.second()); 3678 __data_.second().~_Alloc(); 3679 __a.deallocate(this, 1); 3680} 3681 3682template <class _Tp, class _Alloc> 3683class __shared_ptr_emplace 3684 : public __shared_weak_count 3685{ 3686 __compressed_pair<_Alloc, _Tp> __data_; 3687public: 3688#ifndef _LIBCPP_HAS_NO_VARIADICS 3689 3690 _LIBCPP_INLINE_VISIBILITY 3691 __shared_ptr_emplace(_Alloc __a) 3692 : __data_(_VSTD::move(__a)) {} 3693 3694 template <class ..._Args> 3695 _LIBCPP_INLINE_VISIBILITY 3696 __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) 3697 : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a), 3698 _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {} 3699 3700#else // _LIBCPP_HAS_NO_VARIADICS 3701 3702 _LIBCPP_INLINE_VISIBILITY 3703 __shared_ptr_emplace(_Alloc __a) 3704 : __data_(__a) {} 3705 3706 template <class _A0> 3707 _LIBCPP_INLINE_VISIBILITY 3708 __shared_ptr_emplace(_Alloc __a, _A0& __a0) 3709 : __data_(__a, _Tp(__a0)) {} 3710 3711 template <class _A0, class _A1> 3712 _LIBCPP_INLINE_VISIBILITY 3713 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) 3714 : __data_(__a, _Tp(__a0, __a1)) {} 3715 3716 template <class _A0, class _A1, class _A2> 3717 _LIBCPP_INLINE_VISIBILITY 3718 __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) 3719 : __data_(__a, _Tp(__a0, __a1, __a2)) {} 3720 3721#endif // _LIBCPP_HAS_NO_VARIADICS 3722 3723private: 3724 virtual void __on_zero_shared() _NOEXCEPT; 3725 virtual void __on_zero_shared_weak() _NOEXCEPT; 3726public: 3727 _LIBCPP_INLINE_VISIBILITY 3728 _Tp* get() _NOEXCEPT {return &__data_.second();} 3729}; 3730 3731template <class _Tp, class _Alloc> 3732void 3733__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT 3734{ 3735 __data_.second().~_Tp(); 3736} 3737 3738template <class _Tp, class _Alloc> 3739void 3740__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT 3741{ 3742 typename _Alloc::template rebind<__shared_ptr_emplace>::other __a(__data_.first()); 3743 __data_.first().~_Alloc(); 3744 __a.deallocate(this, 1); 3745} 3746 3747template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this; 3748 3749template<class _Tp> 3750class _LIBCPP_TYPE_VIS_ONLY shared_ptr 3751{ 3752public: 3753 typedef _Tp element_type; 3754private: 3755 element_type* __ptr_; 3756 __shared_weak_count* __cntrl_; 3757 3758 struct __nat {int __for_bool_;}; 3759public: 3760 _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT; 3761 _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT; 3762 template<class _Yp, 3763 class = typename enable_if 3764 < 3765 is_convertible<_Yp*, element_type*>::value 3766 >::type 3767 > 3768 explicit shared_ptr(_Yp* __p); 3769 template<class _Yp, class _Dp, 3770 class = typename enable_if 3771 < 3772 is_convertible<_Yp*, element_type*>::value 3773 >::type 3774 > 3775 shared_ptr(_Yp* __p, _Dp __d); 3776 template<class _Yp, class _Dp, class _Alloc, 3777 class = typename enable_if 3778 < 3779 is_convertible<_Yp*, element_type*>::value 3780 >::type 3781 > 3782 shared_ptr(_Yp* __p, _Dp __d, _Alloc __a); 3783 template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); 3784 template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); 3785 template<class _Yp> shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT; 3786 shared_ptr(const shared_ptr& __r) _NOEXCEPT; 3787 template<class _Yp> 3788 shared_ptr(const shared_ptr<_Yp>& __r, 3789 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3790 _NOEXCEPT; 3791#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3792 shared_ptr(shared_ptr&& __r) _NOEXCEPT; 3793 template<class _Yp> shared_ptr(shared_ptr<_Yp>&& __r, 3794 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()) 3795 _NOEXCEPT; 3796#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3797 template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, 3798 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type= __nat()); 3799#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3800 template<class _Yp, 3801 class = typename enable_if 3802 < 3803 is_convertible<_Yp*, element_type*>::value 3804 >::type 3805 > 3806 shared_ptr(auto_ptr<_Yp>&& __r); 3807#else 3808 template<class _Yp, 3809 class = typename enable_if 3810 < 3811 is_convertible<_Yp*, element_type*>::value 3812 >::type 3813 > 3814 shared_ptr(auto_ptr<_Yp> __r); 3815#endif 3816#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3817 template <class _Yp, class _Dp, 3818 class = typename enable_if 3819 < 3820 !is_array<_Yp>::value && 3821 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value 3822 >::type 3823 > 3824 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3825 typename enable_if<!is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); 3826 template <class _Yp, class _Dp, 3827 class = typename enable_if 3828 < 3829 !is_array<_Yp>::value && 3830 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value 3831 >::type 3832 > 3833 shared_ptr(unique_ptr<_Yp, _Dp>&&, 3834 typename enable_if<is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); 3835#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3836 template <class _Yp, class _Dp, 3837 class = typename enable_if 3838 < 3839 !is_array<_Yp>::value && 3840 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value 3841 >::type 3842 > shared_ptr(unique_ptr<_Yp, _Dp>, 3843 typename enable_if<!is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); 3844 template <class _Yp, class _Dp, 3845 class = typename enable_if 3846 < 3847 !is_array<_Yp>::value && 3848 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value 3849 >::type 3850 > 3851 shared_ptr(unique_ptr<_Yp, _Dp>, 3852 typename enable_if<is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); 3853#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3854 3855 ~shared_ptr(); 3856 3857 shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT; 3858 template<class _Yp> 3859 typename enable_if 3860 < 3861 is_convertible<_Yp*, element_type*>::value, 3862 shared_ptr& 3863 >::type 3864 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT; 3865#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3866 shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT; 3867 template<class _Yp> 3868 typename enable_if 3869 < 3870 is_convertible<_Yp*, element_type*>::value, 3871 shared_ptr<_Tp>& 3872 >::type 3873 operator=(shared_ptr<_Yp>&& __r); 3874 template<class _Yp> 3875 typename enable_if 3876 < 3877 !is_array<_Yp>::value && 3878 is_convertible<_Yp*, element_type*>::value, 3879 shared_ptr 3880 >::type& 3881 operator=(auto_ptr<_Yp>&& __r); 3882#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3883 template<class _Yp> 3884 typename enable_if 3885 < 3886 !is_array<_Yp>::value && 3887 is_convertible<_Yp*, element_type*>::value, 3888 shared_ptr& 3889 >::type 3890 operator=(auto_ptr<_Yp> __r); 3891#endif 3892 template <class _Yp, class _Dp> 3893 typename enable_if 3894 < 3895 !is_array<_Yp>::value && 3896 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, 3897 shared_ptr& 3898 >::type 3899#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 3900 operator=(unique_ptr<_Yp, _Dp>&& __r); 3901#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 3902 operator=(unique_ptr<_Yp, _Dp> __r); 3903#endif 3904 3905 void swap(shared_ptr& __r) _NOEXCEPT; 3906 void reset() _NOEXCEPT; 3907 template<class _Yp> 3908 typename enable_if 3909 < 3910 is_convertible<_Yp*, element_type*>::value, 3911 void 3912 >::type 3913 reset(_Yp* __p); 3914 template<class _Yp, class _Dp> 3915 typename enable_if 3916 < 3917 is_convertible<_Yp*, element_type*>::value, 3918 void 3919 >::type 3920 reset(_Yp* __p, _Dp __d); 3921 template<class _Yp, class _Dp, class _Alloc> 3922 typename enable_if 3923 < 3924 is_convertible<_Yp*, element_type*>::value, 3925 void 3926 >::type 3927 reset(_Yp* __p, _Dp __d, _Alloc __a); 3928 3929 _LIBCPP_INLINE_VISIBILITY 3930 element_type* get() const _NOEXCEPT {return __ptr_;} 3931 _LIBCPP_INLINE_VISIBILITY 3932 typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT 3933 {return *__ptr_;} 3934 _LIBCPP_INLINE_VISIBILITY 3935 element_type* operator->() const _NOEXCEPT {return __ptr_;} 3936 _LIBCPP_INLINE_VISIBILITY 3937 long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;} 3938 _LIBCPP_INLINE_VISIBILITY 3939 bool unique() const _NOEXCEPT {return use_count() == 1;} 3940 _LIBCPP_INLINE_VISIBILITY 3941 _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;} 3942 template <class _Up> 3943 _LIBCPP_INLINE_VISIBILITY 3944 bool owner_before(shared_ptr<_Up> const& __p) const 3945 {return __cntrl_ < __p.__cntrl_;} 3946 template <class _Up> 3947 _LIBCPP_INLINE_VISIBILITY 3948 bool owner_before(weak_ptr<_Up> const& __p) const 3949 {return __cntrl_ < __p.__cntrl_;} 3950 _LIBCPP_INLINE_VISIBILITY 3951 bool 3952 __owner_equivalent(const shared_ptr& __p) const 3953 {return __cntrl_ == __p.__cntrl_;} 3954 3955#ifndef _LIBCPP_NO_RTTI 3956 template <class _Dp> 3957 _LIBCPP_INLINE_VISIBILITY 3958 _Dp* __get_deleter() const _NOEXCEPT 3959 {return (_Dp*)(__cntrl_ ? __cntrl_->__get_deleter(typeid(_Dp)) : 0);} 3960#endif // _LIBCPP_NO_RTTI 3961 3962#ifndef _LIBCPP_HAS_NO_VARIADICS 3963 3964 template<class ..._Args> 3965 static 3966 shared_ptr<_Tp> 3967 make_shared(_Args&& ...__args); 3968 3969 template<class _Alloc, class ..._Args> 3970 static 3971 shared_ptr<_Tp> 3972 allocate_shared(const _Alloc& __a, _Args&& ...__args); 3973 3974#else // _LIBCPP_HAS_NO_VARIADICS 3975 3976 static shared_ptr<_Tp> make_shared(); 3977 3978 template<class _A0> 3979 static shared_ptr<_Tp> make_shared(_A0&); 3980 3981 template<class _A0, class _A1> 3982 static shared_ptr<_Tp> make_shared(_A0&, _A1&); 3983 3984 template<class _A0, class _A1, class _A2> 3985 static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); 3986 3987 template<class _Alloc> 3988 static shared_ptr<_Tp> 3989 allocate_shared(const _Alloc& __a); 3990 3991 template<class _Alloc, class _A0> 3992 static shared_ptr<_Tp> 3993 allocate_shared(const _Alloc& __a, _A0& __a0); 3994 3995 template<class _Alloc, class _A0, class _A1> 3996 static shared_ptr<_Tp> 3997 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); 3998 3999 template<class _Alloc, class _A0, class _A1, class _A2> 4000 static shared_ptr<_Tp> 4001 allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); 4002 4003#endif // _LIBCPP_HAS_NO_VARIADICS 4004 4005private: 4006 4007 template <class _Yp> 4008 _LIBCPP_INLINE_VISIBILITY 4009 void 4010 __enable_weak_this(const enable_shared_from_this<_Yp>* __e) _NOEXCEPT 4011 { 4012 if (__e) 4013 __e->__weak_this_ = *this; 4014 } 4015 4016 _LIBCPP_INLINE_VISIBILITY 4017 void __enable_weak_this(const void*) _NOEXCEPT {} 4018 4019 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr; 4020 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 4021}; 4022 4023template<class _Tp> 4024inline _LIBCPP_INLINE_VISIBILITY 4025_LIBCPP_CONSTEXPR 4026shared_ptr<_Tp>::shared_ptr() _NOEXCEPT 4027 : __ptr_(0), 4028 __cntrl_(0) 4029{ 4030} 4031 4032template<class _Tp> 4033inline _LIBCPP_INLINE_VISIBILITY 4034_LIBCPP_CONSTEXPR 4035shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT 4036 : __ptr_(0), 4037 __cntrl_(0) 4038{ 4039} 4040 4041template<class _Tp> 4042template<class _Yp, class> 4043shared_ptr<_Tp>::shared_ptr(_Yp* __p) 4044 : __ptr_(__p) 4045{ 4046 unique_ptr<_Yp> __hold(__p); 4047 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4048 __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), allocator<_Yp>()); 4049 __hold.release(); 4050 __enable_weak_this(__p); 4051} 4052 4053template<class _Tp> 4054template<class _Yp, class _Dp, class> 4055shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d) 4056 : __ptr_(__p) 4057{ 4058#ifndef _LIBCPP_NO_EXCEPTIONS 4059 try 4060 { 4061#endif // _LIBCPP_NO_EXCEPTIONS 4062 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4063 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Yp>()); 4064 __enable_weak_this(__p); 4065#ifndef _LIBCPP_NO_EXCEPTIONS 4066 } 4067 catch (...) 4068 { 4069 __d(__p); 4070 throw; 4071 } 4072#endif // _LIBCPP_NO_EXCEPTIONS 4073} 4074 4075template<class _Tp> 4076template<class _Dp> 4077shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) 4078 : __ptr_(0) 4079{ 4080#ifndef _LIBCPP_NO_EXCEPTIONS 4081 try 4082 { 4083#endif // _LIBCPP_NO_EXCEPTIONS 4084 typedef __shared_ptr_pointer<nullptr_t, _Dp, allocator<_Tp> > _CntrlBlk; 4085 __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Tp>()); 4086#ifndef _LIBCPP_NO_EXCEPTIONS 4087 } 4088 catch (...) 4089 { 4090 __d(__p); 4091 throw; 4092 } 4093#endif // _LIBCPP_NO_EXCEPTIONS 4094} 4095 4096template<class _Tp> 4097template<class _Yp, class _Dp, class _Alloc, class> 4098shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a) 4099 : __ptr_(__p) 4100{ 4101#ifndef _LIBCPP_NO_EXCEPTIONS 4102 try 4103 { 4104#endif // _LIBCPP_NO_EXCEPTIONS 4105 typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; 4106 typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; 4107 typedef __allocator_destructor<_A2> _D2; 4108 _A2 __a2(__a); 4109 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4110 ::new(__hold2.get()) _CntrlBlk(__p, __d, __a); 4111 __cntrl_ = __hold2.release(); 4112 __enable_weak_this(__p); 4113#ifndef _LIBCPP_NO_EXCEPTIONS 4114 } 4115 catch (...) 4116 { 4117 __d(__p); 4118 throw; 4119 } 4120#endif // _LIBCPP_NO_EXCEPTIONS 4121} 4122 4123template<class _Tp> 4124template<class _Dp, class _Alloc> 4125shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) 4126 : __ptr_(0) 4127{ 4128#ifndef _LIBCPP_NO_EXCEPTIONS 4129 try 4130 { 4131#endif // _LIBCPP_NO_EXCEPTIONS 4132 typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; 4133 typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; 4134 typedef __allocator_destructor<_A2> _D2; 4135 _A2 __a2(__a); 4136 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4137 ::new(__hold2.get()) _CntrlBlk(__p, __d, __a); 4138 __cntrl_ = __hold2.release(); 4139#ifndef _LIBCPP_NO_EXCEPTIONS 4140 } 4141 catch (...) 4142 { 4143 __d(__p); 4144 throw; 4145 } 4146#endif // _LIBCPP_NO_EXCEPTIONS 4147} 4148 4149template<class _Tp> 4150template<class _Yp> 4151inline _LIBCPP_INLINE_VISIBILITY 4152shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT 4153 : __ptr_(__p), 4154 __cntrl_(__r.__cntrl_) 4155{ 4156 if (__cntrl_) 4157 __cntrl_->__add_shared(); 4158} 4159 4160template<class _Tp> 4161inline _LIBCPP_INLINE_VISIBILITY 4162shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT 4163 : __ptr_(__r.__ptr_), 4164 __cntrl_(__r.__cntrl_) 4165{ 4166 if (__cntrl_) 4167 __cntrl_->__add_shared(); 4168} 4169 4170template<class _Tp> 4171template<class _Yp> 4172inline _LIBCPP_INLINE_VISIBILITY 4173shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, 4174 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4175 _NOEXCEPT 4176 : __ptr_(__r.__ptr_), 4177 __cntrl_(__r.__cntrl_) 4178{ 4179 if (__cntrl_) 4180 __cntrl_->__add_shared(); 4181} 4182 4183#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4184 4185template<class _Tp> 4186inline _LIBCPP_INLINE_VISIBILITY 4187shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT 4188 : __ptr_(__r.__ptr_), 4189 __cntrl_(__r.__cntrl_) 4190{ 4191 __r.__ptr_ = 0; 4192 __r.__cntrl_ = 0; 4193} 4194 4195template<class _Tp> 4196template<class _Yp> 4197inline _LIBCPP_INLINE_VISIBILITY 4198shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, 4199 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 4200 _NOEXCEPT 4201 : __ptr_(__r.__ptr_), 4202 __cntrl_(__r.__cntrl_) 4203{ 4204 __r.__ptr_ = 0; 4205 __r.__cntrl_ = 0; 4206} 4207 4208#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4209 4210template<class _Tp> 4211template<class _Yp, class> 4212#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4213shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r) 4214#else 4215shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r) 4216#endif 4217 : __ptr_(__r.get()) 4218{ 4219 typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; 4220 __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); 4221 __enable_weak_this(__r.get()); 4222 __r.release(); 4223} 4224 4225template<class _Tp> 4226template <class _Yp, class _Dp, class> 4227#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4228shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4229#else 4230shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4231#endif 4232 typename enable_if<!is_lvalue_reference<_Dp>::value, __nat>::type) 4233 : __ptr_(__r.get()) 4234{ 4235 typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; 4236 __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), allocator<_Yp>()); 4237 __enable_weak_this(__r.get()); 4238 __r.release(); 4239} 4240 4241template<class _Tp> 4242template <class _Yp, class _Dp, class> 4243#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4244shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, 4245#else 4246shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, 4247#endif 4248 typename enable_if<is_lvalue_reference<_Dp>::value, __nat>::type) 4249 : __ptr_(__r.get()) 4250{ 4251 typedef __shared_ptr_pointer<_Yp*, 4252 reference_wrapper<typename remove_reference<_Dp>::type>, 4253 allocator<_Yp> > _CntrlBlk; 4254 __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), allocator<_Yp>()); 4255 __enable_weak_this(__r.get()); 4256 __r.release(); 4257} 4258 4259#ifndef _LIBCPP_HAS_NO_VARIADICS 4260 4261template<class _Tp> 4262template<class ..._Args> 4263shared_ptr<_Tp> 4264shared_ptr<_Tp>::make_shared(_Args&& ...__args) 4265{ 4266 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4267 typedef allocator<_CntrlBlk> _A2; 4268 typedef __allocator_destructor<_A2> _D2; 4269 _A2 __a2; 4270 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4271 ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...); 4272 shared_ptr<_Tp> __r; 4273 __r.__ptr_ = __hold2.get()->get(); 4274 __r.__cntrl_ = __hold2.release(); 4275 __r.__enable_weak_this(__r.__ptr_); 4276 return __r; 4277} 4278 4279template<class _Tp> 4280template<class _Alloc, class ..._Args> 4281shared_ptr<_Tp> 4282shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) 4283{ 4284 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4285 typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; 4286 typedef __allocator_destructor<_A2> _D2; 4287 _A2 __a2(__a); 4288 unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); 4289 ::new(__hold2.get()) _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...); 4290 shared_ptr<_Tp> __r; 4291 __r.__ptr_ = __hold2.get()->get(); 4292 __r.__cntrl_ = __hold2.release(); 4293 __r.__enable_weak_this(__r.__ptr_); 4294 return __r; 4295} 4296 4297#else // _LIBCPP_HAS_NO_VARIADICS 4298 4299template<class _Tp> 4300shared_ptr<_Tp> 4301shared_ptr<_Tp>::make_shared() 4302{ 4303 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4304 typedef allocator<_CntrlBlk> _Alloc2; 4305 typedef __allocator_destructor<_Alloc2> _D2; 4306 _Alloc2 __alloc2; 4307 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4308 ::new(__hold2.get()) _CntrlBlk(__alloc2); 4309 shared_ptr<_Tp> __r; 4310 __r.__ptr_ = __hold2.get()->get(); 4311 __r.__cntrl_ = __hold2.release(); 4312 __r.__enable_weak_this(__r.__ptr_); 4313 return __r; 4314} 4315 4316template<class _Tp> 4317template<class _A0> 4318shared_ptr<_Tp> 4319shared_ptr<_Tp>::make_shared(_A0& __a0) 4320{ 4321 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4322 typedef allocator<_CntrlBlk> _Alloc2; 4323 typedef __allocator_destructor<_Alloc2> _D2; 4324 _Alloc2 __alloc2; 4325 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4326 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); 4327 shared_ptr<_Tp> __r; 4328 __r.__ptr_ = __hold2.get()->get(); 4329 __r.__cntrl_ = __hold2.release(); 4330 __r.__enable_weak_this(__r.__ptr_); 4331 return __r; 4332} 4333 4334template<class _Tp> 4335template<class _A0, class _A1> 4336shared_ptr<_Tp> 4337shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) 4338{ 4339 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4340 typedef allocator<_CntrlBlk> _Alloc2; 4341 typedef __allocator_destructor<_Alloc2> _D2; 4342 _Alloc2 __alloc2; 4343 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4344 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); 4345 shared_ptr<_Tp> __r; 4346 __r.__ptr_ = __hold2.get()->get(); 4347 __r.__cntrl_ = __hold2.release(); 4348 __r.__enable_weak_this(__r.__ptr_); 4349 return __r; 4350} 4351 4352template<class _Tp> 4353template<class _A0, class _A1, class _A2> 4354shared_ptr<_Tp> 4355shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4356{ 4357 typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; 4358 typedef allocator<_CntrlBlk> _Alloc2; 4359 typedef __allocator_destructor<_Alloc2> _D2; 4360 _Alloc2 __alloc2; 4361 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4362 ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); 4363 shared_ptr<_Tp> __r; 4364 __r.__ptr_ = __hold2.get()->get(); 4365 __r.__cntrl_ = __hold2.release(); 4366 __r.__enable_weak_this(__r.__ptr_); 4367 return __r; 4368} 4369 4370template<class _Tp> 4371template<class _Alloc> 4372shared_ptr<_Tp> 4373shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) 4374{ 4375 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4376 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4377 typedef __allocator_destructor<_Alloc2> _D2; 4378 _Alloc2 __alloc2(__a); 4379 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4380 ::new(__hold2.get()) _CntrlBlk(__a); 4381 shared_ptr<_Tp> __r; 4382 __r.__ptr_ = __hold2.get()->get(); 4383 __r.__cntrl_ = __hold2.release(); 4384 __r.__enable_weak_this(__r.__ptr_); 4385 return __r; 4386} 4387 4388template<class _Tp> 4389template<class _Alloc, class _A0> 4390shared_ptr<_Tp> 4391shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) 4392{ 4393 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4394 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4395 typedef __allocator_destructor<_Alloc2> _D2; 4396 _Alloc2 __alloc2(__a); 4397 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4398 ::new(__hold2.get()) _CntrlBlk(__a, __a0); 4399 shared_ptr<_Tp> __r; 4400 __r.__ptr_ = __hold2.get()->get(); 4401 __r.__cntrl_ = __hold2.release(); 4402 __r.__enable_weak_this(__r.__ptr_); 4403 return __r; 4404} 4405 4406template<class _Tp> 4407template<class _Alloc, class _A0, class _A1> 4408shared_ptr<_Tp> 4409shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4410{ 4411 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4412 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4413 typedef __allocator_destructor<_Alloc2> _D2; 4414 _Alloc2 __alloc2(__a); 4415 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4416 ::new(__hold2.get()) _CntrlBlk(__a, __a0, __a1); 4417 shared_ptr<_Tp> __r; 4418 __r.__ptr_ = __hold2.get()->get(); 4419 __r.__cntrl_ = __hold2.release(); 4420 __r.__enable_weak_this(__r.__ptr_); 4421 return __r; 4422} 4423 4424template<class _Tp> 4425template<class _Alloc, class _A0, class _A1, class _A2> 4426shared_ptr<_Tp> 4427shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4428{ 4429 typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; 4430 typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; 4431 typedef __allocator_destructor<_Alloc2> _D2; 4432 _Alloc2 __alloc2(__a); 4433 unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); 4434 ::new(__hold2.get()) _CntrlBlk(__a, __a0, __a1, __a2); 4435 shared_ptr<_Tp> __r; 4436 __r.__ptr_ = __hold2.get()->get(); 4437 __r.__cntrl_ = __hold2.release(); 4438 __r.__enable_weak_this(__r.__ptr_); 4439 return __r; 4440} 4441 4442#endif // _LIBCPP_HAS_NO_VARIADICS 4443 4444template<class _Tp> 4445shared_ptr<_Tp>::~shared_ptr() 4446{ 4447 if (__cntrl_) 4448 __cntrl_->__release_shared(); 4449} 4450 4451template<class _Tp> 4452inline _LIBCPP_INLINE_VISIBILITY 4453shared_ptr<_Tp>& 4454shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT 4455{ 4456 shared_ptr(__r).swap(*this); 4457 return *this; 4458} 4459 4460template<class _Tp> 4461template<class _Yp> 4462inline _LIBCPP_INLINE_VISIBILITY 4463typename enable_if 4464< 4465 is_convertible<_Yp*, _Tp*>::value, 4466 shared_ptr<_Tp>& 4467>::type 4468shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT 4469{ 4470 shared_ptr(__r).swap(*this); 4471 return *this; 4472} 4473 4474#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4475 4476template<class _Tp> 4477inline _LIBCPP_INLINE_VISIBILITY 4478shared_ptr<_Tp>& 4479shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT 4480{ 4481 shared_ptr(_VSTD::move(__r)).swap(*this); 4482 return *this; 4483} 4484 4485template<class _Tp> 4486template<class _Yp> 4487inline _LIBCPP_INLINE_VISIBILITY 4488typename enable_if 4489< 4490 is_convertible<_Yp*, _Tp*>::value, 4491 shared_ptr<_Tp>& 4492>::type 4493shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) 4494{ 4495 shared_ptr(_VSTD::move(__r)).swap(*this); 4496 return *this; 4497} 4498 4499template<class _Tp> 4500template<class _Yp> 4501inline _LIBCPP_INLINE_VISIBILITY 4502typename enable_if 4503< 4504 !is_array<_Yp>::value && 4505 is_convertible<_Yp*, _Tp*>::value, 4506 shared_ptr<_Tp> 4507>::type& 4508shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) 4509{ 4510 shared_ptr(_VSTD::move(__r)).swap(*this); 4511 return *this; 4512} 4513 4514template<class _Tp> 4515template <class _Yp, class _Dp> 4516inline _LIBCPP_INLINE_VISIBILITY 4517typename enable_if 4518< 4519 !is_array<_Yp>::value && 4520 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4521 shared_ptr<_Tp>& 4522>::type 4523shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) 4524{ 4525 shared_ptr(_VSTD::move(__r)).swap(*this); 4526 return *this; 4527} 4528 4529#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4530 4531template<class _Tp> 4532template<class _Yp> 4533inline _LIBCPP_INLINE_VISIBILITY 4534typename enable_if 4535< 4536 !is_array<_Yp>::value && 4537 is_convertible<_Yp*, _Tp*>::value, 4538 shared_ptr<_Tp>& 4539>::type 4540shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) 4541{ 4542 shared_ptr(__r).swap(*this); 4543 return *this; 4544} 4545 4546template<class _Tp> 4547template <class _Yp, class _Dp> 4548inline _LIBCPP_INLINE_VISIBILITY 4549typename enable_if 4550< 4551 !is_array<_Yp>::value && 4552 is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, _Tp*>::value, 4553 shared_ptr<_Tp>& 4554>::type 4555shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) 4556{ 4557 shared_ptr(_VSTD::move(__r)).swap(*this); 4558 return *this; 4559} 4560 4561#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4562 4563template<class _Tp> 4564inline _LIBCPP_INLINE_VISIBILITY 4565void 4566shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT 4567{ 4568 _VSTD::swap(__ptr_, __r.__ptr_); 4569 _VSTD::swap(__cntrl_, __r.__cntrl_); 4570} 4571 4572template<class _Tp> 4573inline _LIBCPP_INLINE_VISIBILITY 4574void 4575shared_ptr<_Tp>::reset() _NOEXCEPT 4576{ 4577 shared_ptr().swap(*this); 4578} 4579 4580template<class _Tp> 4581template<class _Yp> 4582inline _LIBCPP_INLINE_VISIBILITY 4583typename enable_if 4584< 4585 is_convertible<_Yp*, _Tp*>::value, 4586 void 4587>::type 4588shared_ptr<_Tp>::reset(_Yp* __p) 4589{ 4590 shared_ptr(__p).swap(*this); 4591} 4592 4593template<class _Tp> 4594template<class _Yp, class _Dp> 4595inline _LIBCPP_INLINE_VISIBILITY 4596typename enable_if 4597< 4598 is_convertible<_Yp*, _Tp*>::value, 4599 void 4600>::type 4601shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) 4602{ 4603 shared_ptr(__p, __d).swap(*this); 4604} 4605 4606template<class _Tp> 4607template<class _Yp, class _Dp, class _Alloc> 4608inline _LIBCPP_INLINE_VISIBILITY 4609typename enable_if 4610< 4611 is_convertible<_Yp*, _Tp*>::value, 4612 void 4613>::type 4614shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) 4615{ 4616 shared_ptr(__p, __d, __a).swap(*this); 4617} 4618 4619#ifndef _LIBCPP_HAS_NO_VARIADICS 4620 4621template<class _Tp, class ..._Args> 4622inline _LIBCPP_INLINE_VISIBILITY 4623typename enable_if 4624< 4625 !is_array<_Tp>::value, 4626 shared_ptr<_Tp> 4627>::type 4628make_shared(_Args&& ...__args) 4629{ 4630 return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...); 4631} 4632 4633template<class _Tp, class _Alloc, class ..._Args> 4634inline _LIBCPP_INLINE_VISIBILITY 4635typename enable_if 4636< 4637 !is_array<_Tp>::value, 4638 shared_ptr<_Tp> 4639>::type 4640allocate_shared(const _Alloc& __a, _Args&& ...__args) 4641{ 4642 return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...); 4643} 4644 4645#else // _LIBCPP_HAS_NO_VARIADICS 4646 4647template<class _Tp> 4648inline _LIBCPP_INLINE_VISIBILITY 4649shared_ptr<_Tp> 4650make_shared() 4651{ 4652 return shared_ptr<_Tp>::make_shared(); 4653} 4654 4655template<class _Tp, class _A0> 4656inline _LIBCPP_INLINE_VISIBILITY 4657shared_ptr<_Tp> 4658make_shared(_A0& __a0) 4659{ 4660 return shared_ptr<_Tp>::make_shared(__a0); 4661} 4662 4663template<class _Tp, class _A0, class _A1> 4664inline _LIBCPP_INLINE_VISIBILITY 4665shared_ptr<_Tp> 4666make_shared(_A0& __a0, _A1& __a1) 4667{ 4668 return shared_ptr<_Tp>::make_shared(__a0, __a1); 4669} 4670 4671template<class _Tp, class _A0, class _A1, class _A2> 4672inline _LIBCPP_INLINE_VISIBILITY 4673shared_ptr<_Tp> 4674make_shared(_A0& __a0, _A1& __a1, _A2& __a2) 4675{ 4676 return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); 4677} 4678 4679template<class _Tp, class _Alloc> 4680inline _LIBCPP_INLINE_VISIBILITY 4681shared_ptr<_Tp> 4682allocate_shared(const _Alloc& __a) 4683{ 4684 return shared_ptr<_Tp>::allocate_shared(__a); 4685} 4686 4687template<class _Tp, class _Alloc, class _A0> 4688inline _LIBCPP_INLINE_VISIBILITY 4689shared_ptr<_Tp> 4690allocate_shared(const _Alloc& __a, _A0& __a0) 4691{ 4692 return shared_ptr<_Tp>::allocate_shared(__a, __a0); 4693} 4694 4695template<class _Tp, class _Alloc, class _A0, class _A1> 4696inline _LIBCPP_INLINE_VISIBILITY 4697shared_ptr<_Tp> 4698allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) 4699{ 4700 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); 4701} 4702 4703template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> 4704inline _LIBCPP_INLINE_VISIBILITY 4705shared_ptr<_Tp> 4706allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) 4707{ 4708 return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); 4709} 4710 4711#endif // _LIBCPP_HAS_NO_VARIADICS 4712 4713template<class _Tp, class _Up> 4714inline _LIBCPP_INLINE_VISIBILITY 4715bool 4716operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4717{ 4718 return __x.get() == __y.get(); 4719} 4720 4721template<class _Tp, class _Up> 4722inline _LIBCPP_INLINE_VISIBILITY 4723bool 4724operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4725{ 4726 return !(__x == __y); 4727} 4728 4729template<class _Tp, class _Up> 4730inline _LIBCPP_INLINE_VISIBILITY 4731bool 4732operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4733{ 4734 typedef typename common_type<_Tp*, _Up*>::type _V; 4735 return less<_V>()(__x.get(), __y.get()); 4736} 4737 4738template<class _Tp, class _Up> 4739inline _LIBCPP_INLINE_VISIBILITY 4740bool 4741operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4742{ 4743 return __y < __x; 4744} 4745 4746template<class _Tp, class _Up> 4747inline _LIBCPP_INLINE_VISIBILITY 4748bool 4749operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4750{ 4751 return !(__y < __x); 4752} 4753 4754template<class _Tp, class _Up> 4755inline _LIBCPP_INLINE_VISIBILITY 4756bool 4757operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT 4758{ 4759 return !(__x < __y); 4760} 4761 4762template<class _Tp> 4763inline _LIBCPP_INLINE_VISIBILITY 4764bool 4765operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4766{ 4767 return !__x; 4768} 4769 4770template<class _Tp> 4771inline _LIBCPP_INLINE_VISIBILITY 4772bool 4773operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4774{ 4775 return !__x; 4776} 4777 4778template<class _Tp> 4779inline _LIBCPP_INLINE_VISIBILITY 4780bool 4781operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4782{ 4783 return static_cast<bool>(__x); 4784} 4785 4786template<class _Tp> 4787inline _LIBCPP_INLINE_VISIBILITY 4788bool 4789operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4790{ 4791 return static_cast<bool>(__x); 4792} 4793 4794template<class _Tp> 4795inline _LIBCPP_INLINE_VISIBILITY 4796bool 4797operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4798{ 4799 return less<_Tp*>()(__x.get(), nullptr); 4800} 4801 4802template<class _Tp> 4803inline _LIBCPP_INLINE_VISIBILITY 4804bool 4805operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4806{ 4807 return less<_Tp*>()(nullptr, __x.get()); 4808} 4809 4810template<class _Tp> 4811inline _LIBCPP_INLINE_VISIBILITY 4812bool 4813operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4814{ 4815 return nullptr < __x; 4816} 4817 4818template<class _Tp> 4819inline _LIBCPP_INLINE_VISIBILITY 4820bool 4821operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4822{ 4823 return __x < nullptr; 4824} 4825 4826template<class _Tp> 4827inline _LIBCPP_INLINE_VISIBILITY 4828bool 4829operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4830{ 4831 return !(nullptr < __x); 4832} 4833 4834template<class _Tp> 4835inline _LIBCPP_INLINE_VISIBILITY 4836bool 4837operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4838{ 4839 return !(__x < nullptr); 4840} 4841 4842template<class _Tp> 4843inline _LIBCPP_INLINE_VISIBILITY 4844bool 4845operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT 4846{ 4847 return !(__x < nullptr); 4848} 4849 4850template<class _Tp> 4851inline _LIBCPP_INLINE_VISIBILITY 4852bool 4853operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT 4854{ 4855 return !(nullptr < __x); 4856} 4857 4858template<class _Tp> 4859inline _LIBCPP_INLINE_VISIBILITY 4860void 4861swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT 4862{ 4863 __x.swap(__y); 4864} 4865 4866template<class _Tp, class _Up> 4867inline _LIBCPP_INLINE_VISIBILITY 4868typename enable_if 4869< 4870 !is_array<_Tp>::value && !is_array<_Up>::value, 4871 shared_ptr<_Tp> 4872>::type 4873static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4874{ 4875 return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); 4876} 4877 4878template<class _Tp, class _Up> 4879inline _LIBCPP_INLINE_VISIBILITY 4880typename enable_if 4881< 4882 !is_array<_Tp>::value && !is_array<_Up>::value, 4883 shared_ptr<_Tp> 4884>::type 4885dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4886{ 4887 _Tp* __p = dynamic_cast<_Tp*>(__r.get()); 4888 return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); 4889} 4890 4891template<class _Tp, class _Up> 4892typename enable_if 4893< 4894 is_array<_Tp>::value == is_array<_Up>::value, 4895 shared_ptr<_Tp> 4896>::type 4897const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT 4898{ 4899 typedef typename remove_extent<_Tp>::type _RTp; 4900 return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get())); 4901} 4902 4903#ifndef _LIBCPP_NO_RTTI 4904 4905template<class _Dp, class _Tp> 4906inline _LIBCPP_INLINE_VISIBILITY 4907_Dp* 4908get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT 4909{ 4910 return __p.template __get_deleter<_Dp>(); 4911} 4912 4913#endif // _LIBCPP_NO_RTTI 4914 4915template<class _Tp> 4916class _LIBCPP_TYPE_VIS_ONLY weak_ptr 4917{ 4918public: 4919 typedef _Tp element_type; 4920private: 4921 element_type* __ptr_; 4922 __shared_weak_count* __cntrl_; 4923 4924public: 4925 _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT; 4926 template<class _Yp> weak_ptr(shared_ptr<_Yp> const& __r, 4927 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4928 _NOEXCEPT; 4929 weak_ptr(weak_ptr const& __r) _NOEXCEPT; 4930 template<class _Yp> weak_ptr(weak_ptr<_Yp> const& __r, 4931 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4932 _NOEXCEPT; 4933 4934#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4935 weak_ptr(weak_ptr&& __r) _NOEXCEPT; 4936 template<class _Yp> weak_ptr(weak_ptr<_Yp>&& __r, 4937 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) 4938 _NOEXCEPT; 4939#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4940 ~weak_ptr(); 4941 4942 weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT; 4943 template<class _Yp> 4944 typename enable_if 4945 < 4946 is_convertible<_Yp*, element_type*>::value, 4947 weak_ptr& 4948 >::type 4949 operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT; 4950 4951#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 4952 4953 weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT; 4954 template<class _Yp> 4955 typename enable_if 4956 < 4957 is_convertible<_Yp*, element_type*>::value, 4958 weak_ptr& 4959 >::type 4960 operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT; 4961 4962#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 4963 4964 template<class _Yp> 4965 typename enable_if 4966 < 4967 is_convertible<_Yp*, element_type*>::value, 4968 weak_ptr& 4969 >::type 4970 operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT; 4971 4972 void swap(weak_ptr& __r) _NOEXCEPT; 4973 void reset() _NOEXCEPT; 4974 4975 _LIBCPP_INLINE_VISIBILITY 4976 long use_count() const _NOEXCEPT 4977 {return __cntrl_ ? __cntrl_->use_count() : 0;} 4978 _LIBCPP_INLINE_VISIBILITY 4979 bool expired() const _NOEXCEPT 4980 {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} 4981 shared_ptr<_Tp> lock() const _NOEXCEPT; 4982 template<class _Up> 4983 _LIBCPP_INLINE_VISIBILITY 4984 bool owner_before(const shared_ptr<_Up>& __r) const 4985 {return __cntrl_ < __r.__cntrl_;} 4986 template<class _Up> 4987 _LIBCPP_INLINE_VISIBILITY 4988 bool owner_before(const weak_ptr<_Up>& __r) const 4989 {return __cntrl_ < __r.__cntrl_;} 4990 4991 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY weak_ptr; 4992 template <class _Up> friend class _LIBCPP_TYPE_VIS_ONLY shared_ptr; 4993}; 4994 4995template<class _Tp> 4996inline _LIBCPP_INLINE_VISIBILITY 4997_LIBCPP_CONSTEXPR 4998weak_ptr<_Tp>::weak_ptr() _NOEXCEPT 4999 : __ptr_(0), 5000 __cntrl_(0) 5001{ 5002} 5003 5004template<class _Tp> 5005inline _LIBCPP_INLINE_VISIBILITY 5006weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT 5007 : __ptr_(__r.__ptr_), 5008 __cntrl_(__r.__cntrl_) 5009{ 5010 if (__cntrl_) 5011 __cntrl_->__add_weak(); 5012} 5013 5014template<class _Tp> 5015template<class _Yp> 5016inline _LIBCPP_INLINE_VISIBILITY 5017weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, 5018 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5019 _NOEXCEPT 5020 : __ptr_(__r.__ptr_), 5021 __cntrl_(__r.__cntrl_) 5022{ 5023 if (__cntrl_) 5024 __cntrl_->__add_weak(); 5025} 5026 5027template<class _Tp> 5028template<class _Yp> 5029inline _LIBCPP_INLINE_VISIBILITY 5030weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, 5031 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5032 _NOEXCEPT 5033 : __ptr_(__r.__ptr_), 5034 __cntrl_(__r.__cntrl_) 5035{ 5036 if (__cntrl_) 5037 __cntrl_->__add_weak(); 5038} 5039 5040#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5041 5042template<class _Tp> 5043inline _LIBCPP_INLINE_VISIBILITY 5044weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT 5045 : __ptr_(__r.__ptr_), 5046 __cntrl_(__r.__cntrl_) 5047{ 5048 __r.__ptr_ = 0; 5049 __r.__cntrl_ = 0; 5050} 5051 5052template<class _Tp> 5053template<class _Yp> 5054inline _LIBCPP_INLINE_VISIBILITY 5055weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r, 5056 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) 5057 _NOEXCEPT 5058 : __ptr_(__r.__ptr_), 5059 __cntrl_(__r.__cntrl_) 5060{ 5061 __r.__ptr_ = 0; 5062 __r.__cntrl_ = 0; 5063} 5064 5065#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5066 5067template<class _Tp> 5068weak_ptr<_Tp>::~weak_ptr() 5069{ 5070 if (__cntrl_) 5071 __cntrl_->__release_weak(); 5072} 5073 5074template<class _Tp> 5075inline _LIBCPP_INLINE_VISIBILITY 5076weak_ptr<_Tp>& 5077weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT 5078{ 5079 weak_ptr(__r).swap(*this); 5080 return *this; 5081} 5082 5083template<class _Tp> 5084template<class _Yp> 5085inline _LIBCPP_INLINE_VISIBILITY 5086typename enable_if 5087< 5088 is_convertible<_Yp*, _Tp*>::value, 5089 weak_ptr<_Tp>& 5090>::type 5091weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT 5092{ 5093 weak_ptr(__r).swap(*this); 5094 return *this; 5095} 5096 5097#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 5098 5099template<class _Tp> 5100inline _LIBCPP_INLINE_VISIBILITY 5101weak_ptr<_Tp>& 5102weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT 5103{ 5104 weak_ptr(_VSTD::move(__r)).swap(*this); 5105 return *this; 5106} 5107 5108template<class _Tp> 5109template<class _Yp> 5110inline _LIBCPP_INLINE_VISIBILITY 5111typename enable_if 5112< 5113 is_convertible<_Yp*, _Tp*>::value, 5114 weak_ptr<_Tp>& 5115>::type 5116weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT 5117{ 5118 weak_ptr(_VSTD::move(__r)).swap(*this); 5119 return *this; 5120} 5121 5122#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 5123 5124template<class _Tp> 5125template<class _Yp> 5126inline _LIBCPP_INLINE_VISIBILITY 5127typename enable_if 5128< 5129 is_convertible<_Yp*, _Tp*>::value, 5130 weak_ptr<_Tp>& 5131>::type 5132weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT 5133{ 5134 weak_ptr(__r).swap(*this); 5135 return *this; 5136} 5137 5138template<class _Tp> 5139inline _LIBCPP_INLINE_VISIBILITY 5140void 5141weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT 5142{ 5143 _VSTD::swap(__ptr_, __r.__ptr_); 5144 _VSTD::swap(__cntrl_, __r.__cntrl_); 5145} 5146 5147template<class _Tp> 5148inline _LIBCPP_INLINE_VISIBILITY 5149void 5150swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT 5151{ 5152 __x.swap(__y); 5153} 5154 5155template<class _Tp> 5156inline _LIBCPP_INLINE_VISIBILITY 5157void 5158weak_ptr<_Tp>::reset() _NOEXCEPT 5159{ 5160 weak_ptr().swap(*this); 5161} 5162 5163template<class _Tp> 5164template<class _Yp> 5165shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, 5166 typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) 5167 : __ptr_(__r.__ptr_), 5168 __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) 5169{ 5170 if (__cntrl_ == 0) 5171#ifndef _LIBCPP_NO_EXCEPTIONS 5172 throw bad_weak_ptr(); 5173#else 5174 assert(!"bad_weak_ptr"); 5175#endif 5176} 5177 5178template<class _Tp> 5179shared_ptr<_Tp> 5180weak_ptr<_Tp>::lock() const _NOEXCEPT 5181{ 5182 shared_ptr<_Tp> __r; 5183 __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; 5184 if (__r.__cntrl_) 5185 __r.__ptr_ = __ptr_; 5186 return __r; 5187} 5188 5189template <class _Tp> struct owner_less; 5190 5191template <class _Tp> 5192struct _LIBCPP_TYPE_VIS_ONLY owner_less<shared_ptr<_Tp> > 5193 : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> 5194{ 5195 typedef bool result_type; 5196 _LIBCPP_INLINE_VISIBILITY 5197 bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5198 {return __x.owner_before(__y);} 5199 _LIBCPP_INLINE_VISIBILITY 5200 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5201 {return __x.owner_before(__y);} 5202 _LIBCPP_INLINE_VISIBILITY 5203 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5204 {return __x.owner_before(__y);} 5205}; 5206 5207template <class _Tp> 5208struct _LIBCPP_TYPE_VIS_ONLY owner_less<weak_ptr<_Tp> > 5209 : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> 5210{ 5211 typedef bool result_type; 5212 _LIBCPP_INLINE_VISIBILITY 5213 bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5214 {return __x.owner_before(__y);} 5215 _LIBCPP_INLINE_VISIBILITY 5216 bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const 5217 {return __x.owner_before(__y);} 5218 _LIBCPP_INLINE_VISIBILITY 5219 bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const 5220 {return __x.owner_before(__y);} 5221}; 5222 5223template<class _Tp> 5224class _LIBCPP_TYPE_VIS_ONLY enable_shared_from_this 5225{ 5226 mutable weak_ptr<_Tp> __weak_this_; 5227protected: 5228 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 5229 enable_shared_from_this() _NOEXCEPT {} 5230 _LIBCPP_INLINE_VISIBILITY 5231 enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {} 5232 _LIBCPP_INLINE_VISIBILITY 5233 enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT 5234 {return *this;} 5235 _LIBCPP_INLINE_VISIBILITY 5236 ~enable_shared_from_this() {} 5237public: 5238 _LIBCPP_INLINE_VISIBILITY 5239 shared_ptr<_Tp> shared_from_this() 5240 {return shared_ptr<_Tp>(__weak_this_);} 5241 _LIBCPP_INLINE_VISIBILITY 5242 shared_ptr<_Tp const> shared_from_this() const 5243 {return shared_ptr<const _Tp>(__weak_this_);} 5244 5245 template <class _Up> friend class shared_ptr; 5246}; 5247 5248template <class _Tp> 5249struct _LIBCPP_TYPE_VIS_ONLY hash<shared_ptr<_Tp> > 5250{ 5251 typedef shared_ptr<_Tp> argument_type; 5252 typedef size_t result_type; 5253 _LIBCPP_INLINE_VISIBILITY 5254 result_type operator()(const argument_type& __ptr) const _NOEXCEPT 5255 { 5256 return hash<_Tp*>()(__ptr.get()); 5257 } 5258}; 5259 5260template<class _CharT, class _Traits, class _Yp> 5261inline _LIBCPP_INLINE_VISIBILITY 5262basic_ostream<_CharT, _Traits>& 5263operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p); 5264 5265#if __has_feature(cxx_atomic) 5266 5267class _LIBCPP_TYPE_VIS __sp_mut 5268{ 5269 void* __lx; 5270public: 5271 void lock() _NOEXCEPT; 5272 void unlock() _NOEXCEPT; 5273 5274private: 5275 _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT; 5276 __sp_mut(const __sp_mut&); 5277 __sp_mut& operator=(const __sp_mut&); 5278 5279 friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5280}; 5281 5282_LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); 5283 5284template <class _Tp> 5285inline _LIBCPP_INLINE_VISIBILITY 5286bool 5287atomic_is_lock_free(const shared_ptr<_Tp>*) 5288{ 5289 return false; 5290} 5291 5292template <class _Tp> 5293shared_ptr<_Tp> 5294atomic_load(const shared_ptr<_Tp>* __p) 5295{ 5296 __sp_mut& __m = __get_sp_mut(__p); 5297 __m.lock(); 5298 shared_ptr<_Tp> __q = *__p; 5299 __m.unlock(); 5300 return __q; 5301} 5302 5303template <class _Tp> 5304inline _LIBCPP_INLINE_VISIBILITY 5305shared_ptr<_Tp> 5306atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) 5307{ 5308 return atomic_load(__p); 5309} 5310 5311template <class _Tp> 5312void 5313atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5314{ 5315 __sp_mut& __m = __get_sp_mut(__p); 5316 __m.lock(); 5317 __p->swap(__r); 5318 __m.unlock(); 5319} 5320 5321template <class _Tp> 5322inline _LIBCPP_INLINE_VISIBILITY 5323void 5324atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5325{ 5326 atomic_store(__p, __r); 5327} 5328 5329template <class _Tp> 5330shared_ptr<_Tp> 5331atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) 5332{ 5333 __sp_mut& __m = __get_sp_mut(__p); 5334 __m.lock(); 5335 __p->swap(__r); 5336 __m.unlock(); 5337 return __r; 5338} 5339 5340template <class _Tp> 5341inline _LIBCPP_INLINE_VISIBILITY 5342shared_ptr<_Tp> 5343atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) 5344{ 5345 return atomic_exchange(__p, __r); 5346} 5347 5348template <class _Tp> 5349bool 5350atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5351{ 5352 __sp_mut& __m = __get_sp_mut(__p); 5353 __m.lock(); 5354 if (__p->__owner_equivalent(*__v)) 5355 { 5356 *__p = __w; 5357 __m.unlock(); 5358 return true; 5359 } 5360 *__v = *__p; 5361 __m.unlock(); 5362 return false; 5363} 5364 5365template <class _Tp> 5366inline _LIBCPP_INLINE_VISIBILITY 5367bool 5368atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) 5369{ 5370 return atomic_compare_exchange_strong(__p, __v, __w); 5371} 5372 5373template <class _Tp> 5374inline _LIBCPP_INLINE_VISIBILITY 5375bool 5376atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5377 shared_ptr<_Tp> __w, memory_order, memory_order) 5378{ 5379 return atomic_compare_exchange_strong(__p, __v, __w); 5380} 5381 5382template <class _Tp> 5383inline _LIBCPP_INLINE_VISIBILITY 5384bool 5385atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, 5386 shared_ptr<_Tp> __w, memory_order, memory_order) 5387{ 5388 return atomic_compare_exchange_weak(__p, __v, __w); 5389} 5390 5391#endif // __has_feature(cxx_atomic) 5392 5393//enum class 5394struct _LIBCPP_TYPE_VIS pointer_safety 5395{ 5396 enum __lx 5397 { 5398 relaxed, 5399 preferred, 5400 strict 5401 }; 5402 5403 __lx __v_; 5404 5405 _LIBCPP_INLINE_VISIBILITY 5406 pointer_safety(__lx __v) : __v_(__v) {} 5407 _LIBCPP_INLINE_VISIBILITY 5408 operator int() const {return __v_;} 5409}; 5410 5411_LIBCPP_FUNC_VIS void declare_reachable(void* __p); 5412_LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n); 5413_LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n); 5414_LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT; 5415_LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p); 5416 5417template <class _Tp> 5418inline _LIBCPP_INLINE_VISIBILITY 5419_Tp* 5420undeclare_reachable(_Tp* __p) 5421{ 5422 return static_cast<_Tp*>(__undeclare_reachable(__p)); 5423} 5424 5425_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); 5426 5427_LIBCPP_END_NAMESPACE_STD 5428 5429#endif // _LIBCPP_MEMORY 5430