// -*- C++ -*- //===----------------------------------------------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// #ifndef _LIBCPP_MEMORY #define _LIBCPP_MEMORY // clang-format off /* memory synopsis namespace std { struct allocator_arg_t { }; inline constexpr allocator_arg_t allocator_arg = allocator_arg_t(); template <class T, class Alloc> struct uses_allocator; template <class Ptr> struct pointer_traits { typedef Ptr pointer; typedef <details> element_type; typedef <details> difference_type; template <class U> using rebind = <details>; static pointer pointer_to(<details>); }; template <class T> struct pointer_traits<T*> { typedef T* pointer; typedef T element_type; typedef ptrdiff_t difference_type; template <class U> using rebind = U*; static pointer pointer_to(<details>) noexcept; // constexpr in C++20 }; template <class T> constexpr T* to_address(T* p) noexcept; // C++20 template <class Ptr> constexpr auto to_address(const Ptr& p) noexcept; // C++20 template <class Alloc> struct allocator_traits { typedef Alloc allocator_type; typedef typename allocator_type::value_type value_type; typedef Alloc::pointer | value_type* pointer; typedef Alloc::const_pointer | pointer_traits<pointer>::rebind<const value_type> const_pointer; typedef Alloc::void_pointer | pointer_traits<pointer>::rebind<void> void_pointer; typedef Alloc::const_void_pointer | pointer_traits<pointer>::rebind<const void> const_void_pointer; typedef Alloc::difference_type | pointer_traits<pointer>::difference_type difference_type; typedef Alloc::size_type | make_unsigned<difference_type>::type size_type; typedef Alloc::propagate_on_container_copy_assignment | false_type propagate_on_container_copy_assignment; typedef Alloc::propagate_on_container_move_assignment | false_type propagate_on_container_move_assignment; typedef Alloc::propagate_on_container_swap | false_type propagate_on_container_swap; typedef Alloc::is_always_equal | is_empty is_always_equal; template <class T> using rebind_alloc = Alloc::rebind<T>::other | Alloc<T, Args...>; template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>; static pointer allocate(allocator_type& a, size_type n); // constexpr and [[nodiscard]] in C++20 static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint); // constexpr and [[nodiscard]] in C++20 [[nodiscard]] static constexpr allocation_result<pointer, size_type> allocate_at_least(Alloc& a, size_type n); // Since C++23 static void deallocate(allocator_type& a, pointer p, size_type n) noexcept; // constexpr in C++20 template <class T, class... Args> static void construct(allocator_type& a, T* p, Args&&... args); // constexpr in C++20 template <class T> static void destroy(allocator_type& a, T* p); // constexpr in C++20 static size_type max_size(const allocator_type& a); // noexcept in C++14, constexpr in C++20 static allocator_type select_on_container_copy_construction(const allocator_type& a); // constexpr in C++20 }; template<class Pointer, class SizeType = size_t> struct allocation_result { Pointer ptr; SizeType count; }; // Since C++23 template <> class allocator<void> // removed in C++20 { public: typedef void* pointer; typedef const void* const_pointer; typedef void value_type; template <class _Up> struct rebind {typedef allocator<_Up> other;}; }; template <class T> class allocator { public: typedef size_t size_type; typedef ptrdiff_t difference_type; typedef T* pointer; // deprecated in C++17, removed in C++20 typedef const T* const_pointer; // deprecated in C++17, removed in C++20 typedef typename add_lvalue_reference<T>::type reference; // deprecated in C++17, removed in C++20 typedef typename add_lvalue_reference<const T>::type const_reference; // deprecated in C++17, removed in C++20 typedef T value_type; template <class U> struct rebind {typedef allocator<U> other;}; // deprecated in C++17, removed in C++20 typedef true_type propagate_on_container_move_assignment; typedef true_type is_always_equal; // Deprecated in C++23, removed in C++26 constexpr allocator() noexcept; // constexpr in C++20 constexpr allocator(const allocator&) noexcept; // constexpr in C++20 template <class U> constexpr allocator(const allocator<U>&) noexcept; // constexpr in C++20 ~allocator(); // constexpr in C++20 pointer address(reference x) const noexcept; // deprecated in C++17, removed in C++20 const_pointer address(const_reference x) const noexcept; // deprecated in C++17, removed in C++20 T* allocate(size_t n, const void* hint); // deprecated in C++17, removed in C++20 T* allocate(size_t n); // constexpr in C++20 void deallocate(T* p, size_t n) noexcept; // constexpr in C++20 size_type max_size() const noexcept; // deprecated in C++17, removed in C++20 template<class U, class... Args> void construct(U* p, Args&&... args); // deprecated in C++17, removed in C++20 template <class U> void destroy(U* p); // deprecated in C++17, removed in C++20 }; template <class T, class U> bool operator==(const allocator<T>&, const allocator<U>&) noexcept; // constexpr in C++20 template <class T, class U> bool operator!=(const allocator<T>&, const allocator<U>&) noexcept; // removed in C++20 template <class OutputIterator, class T> class raw_storage_iterator // deprecated in C++17, removed in C++20 : public iterator<output_iterator_tag, void, void, void, void> // until C++17 { public: typedef output_iterator_tag iterator_category; typedef void value_type; typedef void difference_type; // until C++20 typedef ptrdiff_t difference_type; // since C++20 typedef void pointer; typedef void reference; explicit raw_storage_iterator(OutputIterator x); raw_storage_iterator& operator*(); raw_storage_iterator& operator=(const T& element); raw_storage_iterator& operator++(); raw_storage_iterator operator++(int); }; template <class T> pair<T*,ptrdiff_t> get_temporary_buffer(ptrdiff_t n) noexcept; template <class T> void return_temporary_buffer(T* p) noexcept; template <class T> T* addressof(T& r) noexcept; template <class T> T* addressof(const T&& r) noexcept = delete; template <class InputIterator, class ForwardIterator> ForwardIterator uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result); namespace ranges { template<class InputIterator, class OutputIterator> using uninitialized_copy_result = in_out_result<InputIterator, OutputIterator>; // since C++20 template<input_iterator InputIterator, sentinel-for<InputIterator> Sentinel1, nothrow-forward-iterator OutputIterator, nothrow-sentinel-for<OutputIterator> Sentinel2> requires constructible_from<iter_value_t<OutputIterator>, iter_reference_t<InputIterator>> uninitialized_copy_result<InputIterator, OutputIterator> uninitialized_copy(InputIterator ifirst, Sentinel1 ilast, OutputIterator ofirst, Sentinel2 olast); // since C++20 template<input_range InputRange, nothrow-forward-range OutputRange> requires constructible_from<range_value_t<OutputRange>, range_reference_t<InputRange>> uninitialized_copy_result<borrowed_iterator_t<InputRange>, borrowed_iterator_t<OutputRange>> uninitialized_copy(InputRange&& in_range, OutputRange&& out_range); // since C++20 } template <class InputIterator, class Size, class ForwardIterator> ForwardIterator uninitialized_copy_n(InputIterator first, Size n, ForwardIterator result); namespace ranges { template<class InputIterator, class OutputIterator> using uninitialized_copy_n_result = in_out_result<InputIterator, OutputIterator>; // since C++20 template<input_iterator InputIterator, nothrow-forward-iterator OutputIterator, nothrow-sentinel-for<OutputIterator> Sentinel> requires constructible_from<iter_value_t<OutputIterator>, iter_reference_t<InputIterator>> uninitialized_copy_n_result<InputIterator, OutputIterator> uninitialized_copy_n(InputIterator ifirst, iter_difference_t<InputIterator> n, OutputIterator ofirst, Sentinel olast); // since C++20 } template <class ForwardIterator, class T> void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x); namespace ranges { template <nothrow-forward-iterator ForwardIterator, nothrow-sentinel-for<ForwardIterator> Sentinel, class T> requires constructible_from<iter_value_t<ForwardIterator>, const T&> ForwardIterator uninitialized_fill(ForwardIterator first, Sentinel last, const T& x); // since C++20 template <nothrow-forward-range ForwardRange, class T> requires constructible_from<range_value_t<ForwardRange>, const T&> borrowed_iterator_t<ForwardRange> uninitialized_fill(ForwardRange&& range, const T& x); // since C++20 } template <class ForwardIterator, class Size, class T> ForwardIterator uninitialized_fill_n(ForwardIterator first, Size n, const T& x); namespace ranges { template <nothrow-forward-iterator ForwardIterator, class T> requires constructible_from<iter_value_t<ForwardIterator>, const T&> ForwardIterator uninitialized_fill_n(ForwardIterator first, iter_difference_t<ForwardIterator> n); // since C++20 } template <class T, class ...Args> constexpr T* construct_at(T* location, Args&& ...args); // since C++20 namespace ranges { template<class T, class... Args> constexpr T* construct_at(T* location, Args&&... args); // since C++20 } template <class T> void destroy_at(T* location); // constexpr in C++20 namespace ranges { template<destructible T> constexpr void destroy_at(T* location) noexcept; // since C++20 } template <class ForwardIterator> void destroy(ForwardIterator first, ForwardIterator last); // constexpr in C++20 namespace ranges { template<nothrow-input-iterator InputIterator, nothrow-sentinel-for<InputIterator> Sentinel> requires destructible<iter_value_t<InputIterator>> constexpr InputIterator destroy(InputIterator first, Sentinel last) noexcept; // since C++20 template<nothrow-input-range InputRange> requires destructible<range_value_t<InputRange>> constexpr borrowed_iterator_t<InputRange> destroy(InputRange&& range) noexcept; // since C++20 } template <class ForwardIterator, class Size> ForwardIterator destroy_n(ForwardIterator first, Size n); // constexpr in C++20 namespace ranges { template<nothrow-input-iterator InputIterator> requires destructible<iter_value_t<InputIterator>> constexpr InputIterator destroy_n(InputIterator first, iter_difference_t<InputIterator> n) noexcept; // since C++20 } template <class InputIterator, class ForwardIterator> ForwardIterator uninitialized_move(InputIterator first, InputIterator last, ForwardIterator result); namespace ranges { template<class InputIterator, class OutputIterator> using uninitialized_move_result = in_out_result<InputIterator, OutputIterator>; // since C++20 template <input_iterator InputIterator, sentinel_for<InputIterator> Sentinel1, nothrow-forward-iterator OutputIterator, nothrow-sentinel-for<O> Sentinel2> requires constructible_from<iter_value_t<OutputIterator>, iter_rvalue_reference_t<InputIterator>> uninitialized_move_result<InputIterator, OutputIterator> uninitialized_move(InputIterator ifirst, Sentinel1 ilast, OutputIterator ofirst, Sentinel2 olast); // since C++20 template<input_range InputRange, nothrow-forward-range OutputRange> requires constructible_from<range_value_t<OutputRange>, range_rvalue_reference_t<InputRange>> uninitialized_move_result<borrowed_iterator_t<InputRange>, borrowed_iterator_t<OutputRange>> uninitialized_move(InputRange&& in_range, OutputRange&& out_range); // since C++20 } template <class InputIterator, class Size, class ForwardIterator> pair<InputIterator,ForwardIterator> uninitialized_move_n(InputIterator first, Size n, ForwardIterator result); namespace ranges { template<class InputIterator, class OutputIterator> using uninitialized_move_n_result = in_out_result<InputIterator, OutputIterator>; // since C++20 template<input_iterator InputIterator, nothrow-forward-iterator OutputIterator, nothrow-sentinel-for<OutputIterator> Sentinel> requires constructible_from<iter_value_t<OutputIterator>, iter_rvalue_reference_t<InputIterator>> uninitialized_move_n_result<InputIterator, OutputIterator> uninitialized_move_n(InputIterator ifirst, iter_difference_t<InputIterator> n, OutputIterator ofirst, Sentinel olast); // since C++20 } template <class ForwardIterator> void uninitialized_value_construct(ForwardIterator first, ForwardIterator last); namespace ranges { template <nothrow-forward-iterator ForwardIterator, nothrow-sentinel-for<ForwardIterator> Sentinel> requires default_initializable<iter_value_t<ForwardIterator>> ForwardIterator uninitialized_value_construct(ForwardIterator first, Sentinel last); // since C++20 template <nothrow-forward-range ForwardRange> requires default_initializable<range_value_t<ForwardRange>> borrowed_iterator_t<ForwardRange> uninitialized_value_construct(ForwardRange&& r); // since C++20 } template <class ForwardIterator, class Size> ForwardIterator uninitialized_value_construct_n(ForwardIterator first, Size n); namespace ranges { template <nothrow-forward-iterator ForwardIterator> requires default_initializable<iter_value_t<ForwardIterator>> ForwardIterator uninitialized_value_construct_n(ForwardIterator first, iter_difference_t<ForwardIterator> n); // since C++20 } template <class ForwardIterator> void uninitialized_default_construct(ForwardIterator first, ForwardIterator last); namespace ranges { template <nothrow-forward-iterator ForwardIterator, nothrow-sentinel-for<ForwardIterator> Sentinel> requires default_initializable<iter_value_t<ForwardIterator>> ForwardIterator uninitialized_default_construct(ForwardIterator first, Sentinel last); // since C++20 template <nothrow-forward-range ForwardRange> requires default_initializable<range_value_t<ForwardRange>> borrowed_iterator_t<ForwardRange> uninitialized_default_construct(ForwardRange&& r); // since C++20 } template <class ForwardIterator, class Size> ForwardIterator uninitialized_default_construct_n(ForwardIterator first, Size n); namespace ranges { template <nothrow-forward-iterator ForwardIterator> requires default_initializable<iter_value_t<ForwardIterator>> ForwardIterator uninitialized_default_construct_n(ForwardIterator first, iter_difference_t<ForwardIterator> n); // since C++20 } template <class Y> struct auto_ptr_ref {}; // deprecated in C++11, removed in C++17 template<class X> class auto_ptr // deprecated in C++11, removed in C++17 { public: typedef X element_type; explicit auto_ptr(X* p =0) throw(); auto_ptr(auto_ptr&) throw(); template<class Y> auto_ptr(auto_ptr<Y>&) throw(); auto_ptr& operator=(auto_ptr&) throw(); template<class Y> auto_ptr& operator=(auto_ptr<Y>&) throw(); auto_ptr& operator=(auto_ptr_ref<X> r) throw(); ~auto_ptr() throw(); typename add_lvalue_reference<X>::type operator*() const throw(); X* operator->() const throw(); X* get() const throw(); X* release() throw(); void reset(X* p =0) throw(); auto_ptr(auto_ptr_ref<X>) throw(); template<class Y> operator auto_ptr_ref<Y>() throw(); template<class Y> operator auto_ptr<Y>() throw(); }; template <class T> struct default_delete { constexpr default_delete() noexcept = default; template <class U> constexpr default_delete(const default_delete<U>&) noexcept; // constexpr since C++23 constexpr void operator()(T*) const noexcept; // constexpr since C++23 }; template <class T> struct default_delete<T[]> { constexpr default_delete() noexcept = default; template <class U> constexpr default_delete(const default_delete <U[]>&) noexcept; // constexpr since C++23 constexpr void operator()(T*) const noexcept; // constexpr since C++23 template <class U> void operator()(U*) const = delete; }; template <class T, class D = default_delete<T>> class unique_ptr { public: typedef see below pointer; typedef T element_type; typedef D deleter_type; // constructors constexpr unique_ptr() noexcept; constexpr explicit unique_ptr(pointer p) noexcept; // constexpr since C++23 constexpr unique_ptr(pointer p, see below d1) noexcept; // constexpr since C++23 constexpr unique_ptr(pointer p, see below d2) noexcept; // constexpr since C++23 constexpr unique_ptr(unique_ptr&& u) noexcept; // constexpr since C++23 constexpr unique_ptr(nullptr_t) noexcept : unique_ptr() { } template <class U, class E> constexpr unique_ptr(unique_ptr<U, E>&& u) noexcept; // constexpr since C++23 template <class U> unique_ptr(auto_ptr<U>&& u) noexcept; // removed in C++17 // destructor constexpr ~unique_ptr(); // constexpr since C++23 // assignment constexpr unique_ptr& operator=(unique_ptr&& u) noexcept; // constexpr since C++23 template <class U, class E> constexpr unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept; // constexpr since C++23 constexpr unique_ptr& operator=(nullptr_t) noexcept; // constexpr since C++23 // observers constexpr add_lvalue_reference<T>::type operator*() const noexcept(see below); // constexpr since C++23 constexpr pointer operator->() const noexcept; // constexpr since C++23 constexpr pointer get() const noexcept; // constexpr since C++23 constexpr deleter_type& get_deleter() noexcept; // constexpr since C++23 constexpr const deleter_type& get_deleter() const noexcept; // constexpr since C++23 constexpr explicit operator bool() const noexcept; // constexpr since C++23 // modifiers constexpr pointer release() noexcept; // constexpr since C++23 constexpr void reset(pointer p = pointer()) noexcept; // constexpr since C++23 constexpr void swap(unique_ptr& u) noexcept; // constexpr since C++23 }; template <class T, class D> class unique_ptr<T[], D> { public: typedef implementation-defined pointer; typedef T element_type; typedef D deleter_type; // constructors constexpr unique_ptr() noexcept; constexpr explicit unique_ptr(pointer p) noexcept; // constexpr since C++23 constexpr unique_ptr(pointer p, see below d) noexcept; // constexpr since C++23 constexpr unique_ptr(pointer p, see below d) noexcept; // constexpr since C++23 constexpr unique_ptr(unique_ptr&& u) noexcept; // constexpr since C++23 template <class U, class E> constexpr unique_ptr(unique_ptr <U, E>&& u) noexcept; // constexpr since C++23 constexpr unique_ptr(nullptr_t) noexcept : unique_ptr() { } // destructor constexpr ~unique_ptr(); // constexpr since C++23 // assignment constexpr unique_ptr& operator=(unique_ptr&& u) noexcept; // constexpr since C++23 template <class U, class E> constexpr unique_ptr& operator=(unique_ptr <U, E>&& u) noexcept; // constexpr since C++23 constexpr unique_ptr& operator=(nullptr_t) noexcept; // constexpr since C++23 // observers constexpr T& operator[](size_t i) const; // constexpr since C++23 constexpr pointer get() const noexcept; // constexpr since C++23 constexpr deleter_type& get_deleter() noexcept; // constexpr since C++23 constexpr const deleter_type& get_deleter() const noexcept; // constexpr since C++23 constexpr explicit operator bool() const noexcept; // constexpr since C++23 // modifiers constexpr pointer release() noexcept; // constexpr since C++23 constexpr void reset(pointer p = pointer()) noexcept; // constexpr since C++23 constexpr void reset(nullptr_t) noexcept; // constexpr since C++23 template <class U> void reset(U) = delete; constexpr void swap(unique_ptr& u) noexcept; // constexpr since C++23 }; template <class T, class D> constexpr void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept; // constexpr since C++23 template <class T1, class D1, class T2, class D2> constexpr bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); // constexpr since C++23 template <class T1, class D1, class T2, class D2> bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); // removed in C++20 template <class T1, class D1, class T2, class D2> bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); template <class T1, class D1, class T2, class D2> bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); template <class T1, class D1, class T2, class D2> bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); template <class T1, class D1, class T2, class D2> bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); template<class T1, class D1, class T2, class D2> requires three_way_comparable_with<typename unique_ptr<T1, D1>::pointer, typename unique_ptr<T2, D2>::pointer> compare_three_way_result_t<typename unique_ptr<T1, D1>::pointer, typename unique_ptr<T2, D2>::pointer> operator<=>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); // C++20 template <class T, class D> constexpr bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; // constexpr since C++23 template <class T, class D> bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept; // removed in C++20 template <class T, class D> bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept; // removed in C++20 template <class T, class D> bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept; // removed in C++20 template <class T, class D> constexpr bool operator<(const unique_ptr<T, D>& x, nullptr_t); // constexpr since C++23 template <class T, class D> constexpr bool operator<(nullptr_t, const unique_ptr<T, D>& y); // constexpr since C++23 template <class T, class D> constexpr bool operator<=(const unique_ptr<T, D>& x, nullptr_t); // constexpr since C++23 template <class T, class D> constexpr bool operator<=(nullptr_t, const unique_ptr<T, D>& y); // constexpr since C++23 template <class T, class D> constexpr bool operator>(const unique_ptr<T, D>& x, nullptr_t); // constexpr since C++23 template <class T, class D> constexpr bool operator>(nullptr_t, const unique_ptr<T, D>& y); // constexpr since C++23 template <class T, class D> constexpr bool operator>=(const unique_ptr<T, D>& x, nullptr_t); // constexpr since C++23 template <class T, class D> constexpr bool operator>=(nullptr_t, const unique_ptr<T, D>& y); // constexpr since C++23 template<class T, class D> requires three_way_comparable<typename unique_ptr<T, D>::pointer> compare_three_way_result_t<typename unique_ptr<T, D>::pointer> constexpr operator<=>(const unique_ptr<T, D>& x, nullptr_t); // C++20, constexpr since C++23 class bad_weak_ptr : public std::exception { bad_weak_ptr() noexcept; }; template<class T, class... Args> constexpr unique_ptr<T> make_unique(Args&&... args); // C++14, constexpr since C++23 template<class T> constexpr unique_ptr<T> make_unique(size_t n); // C++14, constexpr since C++23 template<class T, class... Args> unspecified make_unique(Args&&...) = delete; // C++14, T == U[N] template<class T> constexpr unique_ptr<T> make_unique_for_overwrite(); // T is not array, C++20, constexpr since C++23 template<class T> constexpr unique_ptr<T> make_unique_for_overwrite(size_t n); // T is U[], C++20, constexpr since C++23 template<class T, class... Args> unspecified make_unique_for_overwrite(Args&&...) = delete; // T is U[N], C++20 template<class E, class T, class Y, class D> basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, unique_ptr<Y, D> const& p); template<class T> class shared_ptr { public: typedef T element_type; // until C++17 typedef remove_extent_t<T> element_type; // since C++17 typedef weak_ptr<T> weak_type; // C++17 // constructors: constexpr shared_ptr() noexcept; template<class Y> explicit shared_ptr(Y* p); template<class Y, class D> shared_ptr(Y* p, D d); template<class Y, class D, class A> shared_ptr(Y* p, D d, A a); template <class D> shared_ptr(nullptr_t p, D d); template <class D, class A> shared_ptr(nullptr_t p, D d, A a); template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p) noexcept; shared_ptr(const shared_ptr& r) noexcept; template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept; shared_ptr(shared_ptr&& r) noexcept; template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept; template<class Y> explicit shared_ptr(const weak_ptr<Y>& r); template<class Y> shared_ptr(auto_ptr<Y>&& r); // removed in C++17 template <class Y, class D> shared_ptr(unique_ptr<Y, D>&& r); shared_ptr(nullptr_t) : shared_ptr() { } // destructor: ~shared_ptr(); // assignment: shared_ptr& operator=(const shared_ptr& r) noexcept; template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept; shared_ptr& operator=(shared_ptr&& r) noexcept; template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r); template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); // removed in C++17 template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r); // modifiers: void swap(shared_ptr& r) noexcept; void reset() noexcept; template<class Y> void reset(Y* p); template<class Y, class D> void reset(Y* p, D d); template<class Y, class D, class A> void reset(Y* p, D d, A a); // observers: T* get() const noexcept; T& operator*() const noexcept; T* operator->() const noexcept; long use_count() const noexcept; bool unique() const noexcept; // deprected in C++17, removed in C++20 explicit operator bool() const noexcept; template<class U> bool owner_before(shared_ptr<U> const& b) const noexcept; template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept; }; template<class T> shared_ptr(weak_ptr<T>) -> shared_ptr<T>; template<class T, class D> shared_ptr(unique_ptr<T, D>) -> shared_ptr<T>; // shared_ptr comparisons: template<class T, class U> bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; template<class T, class U> bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; // removed in C++20 template<class T, class U> bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; // removed in C++20 template<class T, class U> bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; // removed in C++20 template<class T, class U> bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; // removed in C++20 template<class T, class U> bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; // removed in C++20 template<class T, class U> strong_ordering operator<=>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; // C++20 template <class T> bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept; template <class T> bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept; // removed in C++20 template <class T> bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept; // removed in C++20 template <class T> bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept; // removed in C++20 template <class T> bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept; // removed in C++20 template <class T> bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept; // removed in C++20 template <class T> bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept; // removed in C++20 template <class T> bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept; // removed in C++20 template <class T> bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept; // removed in C++20 template <class T> bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept; // removed in C++20 template <class T> bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept; // removed in C++20 template <class T> bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept; // removed in C++20 template<class T> strong_ordering operator<=>(shared_ptr<T> const& x, nullptr_t) noexcept; // C++20 // shared_ptr specialized algorithms: template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept; // shared_ptr casts: template<class T, class U> shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept; template<class T, class U> shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept; template<class T, class U> shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept; // shared_ptr I/O: template<class E, class T, class Y> basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, shared_ptr<Y> const& p); // shared_ptr get_deleter: template<class D, class T> D* get_deleter(shared_ptr<T> const& p) noexcept; template<class T, class... Args> shared_ptr<T> make_shared(Args&&... args); // T is not an array template<class T, class A, class... Args> shared_ptr<T> allocate_shared(const A& a, Args&&... args); // T is not an array template<class T> shared_ptr<T> make_shared(size_t N); // T is U[] (since C++20) template<class T, class A> shared_ptr<T> allocate_shared(const A& a, size_t N); // T is U[] (since C++20) template<class T> shared_ptr<T> make_shared(); // T is U[N] (since C++20) template<class T, class A> shared_ptr<T> allocate_shared(const A& a); // T is U[N] (since C++20) template<class T> shared_ptr<T> make_shared(size_t N, const remove_extent_t<T>& u); // T is U[] (since C++20) template<class T, class A> shared_ptr<T> allocate_shared(const A& a, size_t N, const remove_extent_t<T>& u); // T is U[] (since C++20) template<class T> shared_ptr<T> make_shared(const remove_extent_t<T>& u); // T is U[N] (since C++20) template<class T, class A> shared_ptr<T> allocate_shared(const A& a, const remove_extent_t<T>& u); // T is U[N] (since C++20) template<class T> shared_ptr<T> make_shared_for_overwrite(); // T is not U[], C++20 template<class T, class A> shared_ptr<T> allocate_shared_for_overwrite(const A& a); // T is not U[], C++20 template<class T> shared_ptr<T> make_shared_for_overwrite(size_t N); // T is U[], C++20 template<class T, class A> shared_ptr<T> allocate_shared_for_overwrite(const A& a, size_t N); // T is U[], C++20 template<class T> class weak_ptr { public: typedef T element_type; // until C++17 typedef remove_extent_t<T> element_type; // since C++17 // constructors constexpr weak_ptr() noexcept; template<class Y> weak_ptr(shared_ptr<Y> const& r) noexcept; weak_ptr(weak_ptr const& r) noexcept; template<class Y> weak_ptr(weak_ptr<Y> const& r) noexcept; weak_ptr(weak_ptr&& r) noexcept; // C++14 template<class Y> weak_ptr(weak_ptr<Y>&& r) noexcept; // C++14 // destructor ~weak_ptr(); // assignment weak_ptr& operator=(weak_ptr const& r) noexcept; template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r) noexcept; template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r) noexcept; weak_ptr& operator=(weak_ptr&& r) noexcept; // C++14 template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r) noexcept; // C++14 // modifiers void swap(weak_ptr& r) noexcept; void reset() noexcept; // observers long use_count() const noexcept; bool expired() const noexcept; shared_ptr<T> lock() const noexcept; template<class U> bool owner_before(shared_ptr<U> const& b) const noexcept; template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept; }; template<class T> weak_ptr(shared_ptr<T>) -> weak_ptr<T>; // weak_ptr specialized algorithms: template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept; // class owner_less: template<class T> struct owner_less; template<class T> struct owner_less<shared_ptr<T> > : binary_function<shared_ptr<T>, shared_ptr<T>, bool> { typedef bool result_type; bool operator()(shared_ptr<T> const&, shared_ptr<T> const&) const noexcept; bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept; bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept; }; template<class T> struct owner_less<weak_ptr<T> > : binary_function<weak_ptr<T>, weak_ptr<T>, bool> { typedef bool result_type; bool operator()(weak_ptr<T> const&, weak_ptr<T> const&) const noexcept; bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept; bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept; }; template <> // Added in C++14 struct owner_less<void> { template <class _Tp, class _Up> bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept; template <class _Tp, class _Up> bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const noexcept; template <class _Tp, class _Up> bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept; template <class _Tp, class _Up> bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const noexcept; typedef void is_transparent; }; template<class T> class enable_shared_from_this { protected: constexpr enable_shared_from_this() noexcept; enable_shared_from_this(enable_shared_from_this const&) noexcept; enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept; ~enable_shared_from_this(); public: shared_ptr<T> shared_from_this(); shared_ptr<T const> shared_from_this() const; }; template<class T> bool atomic_is_lock_free(const shared_ptr<T>* p); template<class T> shared_ptr<T> atomic_load(const shared_ptr<T>* p); template<class T> shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo); template<class T> void atomic_store(shared_ptr<T>* p, shared_ptr<T> r); template<class T> void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); template<class T> shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r); template<class T> shared_ptr<T> atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); template<class T> bool atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); template<class T> bool atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); template<class T> bool atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w, memory_order success, memory_order failure); template<class T> bool atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w, memory_order success, memory_order failure); // Hash support template <class T> struct hash; template <class T, class D> struct hash<unique_ptr<T, D> >; template <class T> struct hash<shared_ptr<T> >; template <class T, class Alloc> inline constexpr bool uses_allocator_v = uses_allocator<T, Alloc>::value; // [allocator.uses.construction], uses-allocator construction template<class T, class Alloc, class... Args> constexpr auto uses_allocator_construction_args(const Alloc& alloc, // since C++20 Args&&... args) noexcept; template<class T, class Alloc, class Tuple1, class Tuple2> constexpr auto uses_allocator_construction_args(const Alloc& alloc, // since C++20 piecewise_construct_t, Tuple1&& x, Tuple2&& y) noexcept; template<class T, class Alloc> constexpr auto uses_allocator_construction_args(const Alloc& alloc) noexcept; // since C++20 template<class T, class Alloc, class U, class V> constexpr auto uses_allocator_construction_args(const Alloc& alloc, // since C++20 U&& u, V&& v) noexcept; template<class T, class Alloc, class U, class V> constexpr auto uses_allocator_construction_args(const Alloc& alloc, // since C++23 pair<U, V>& pr) noexcept; template<class T, class Alloc, class U, class V> constexpr auto uses_allocator_construction_args(const Alloc& alloc, // since C++20 const pair<U, V>& pr) noexcept; template<class T, class Alloc, class U, class V> constexpr auto uses_allocator_construction_args(const Alloc& alloc, // since C++20 pair<U, V>&& pr) noexcept; template<class T, class Alloc, class U, class V> constexpr auto uses_allocator_construction_args(const Alloc& alloc, // since C++23 const pair<U, V>&& pr) noexcept; template<class T, class Alloc, pair-like P> constexpr auto uses_allocator_construction_args(const Alloc& alloc, // since C++20 P&& p) noexcept; template<class T, class Alloc, class U> constexpr auto uses_allocator_construction_args(const Alloc& alloc, // since C++20 U&& u) noexcept; template<class T, class Alloc, class... Args> constexpr T make_obj_using_allocator(const Alloc& alloc, Args&&... args); // since C++20 template<class T, class Alloc, class... Args> constexpr T* uninitialized_construct_using_allocator(T* p, // since C++20 const Alloc& alloc, Args&&... args); // [ptr.align] void* align(size_t alignment, size_t size, void*& ptr, size_t& space); template<size_t N, class T> [[nodiscard]] constexpr T* assume_aligned(T* ptr); // since C++20 // [out.ptr.t], class template out_ptr_t template<class Smart, class Pointer, class... Args> class out_ptr_t; // since c++23 // [out.ptr], function template out_ptr template<class Pointer = void, class Smart, class... Args> auto out_ptr(Smart& s, Args&&... args); // since c++23 // [inout.ptr.t], class template inout_ptr_t template<class Smart, class Pointer, class... Args> class inout_ptr_t; // since c++23 // [inout.ptr], function template inout_ptr template<class Pointer = void, class Smart, class... Args> auto inout_ptr(Smart& s, Args&&... args); // since c++23 } // std */ // clang-format on #include <__config> #include <__memory/addressof.h> #include <__memory/align.h> #include <__memory/allocator.h> #include <__memory/allocator_arg_t.h> #include <__memory/allocator_traits.h> #include <__memory/auto_ptr.h> #include <__memory/inout_ptr.h> #include <__memory/out_ptr.h> #include <__memory/pointer_traits.h> #include <__memory/raw_storage_iterator.h> #include <__memory/shared_ptr.h> #include <__memory/temporary_buffer.h> #include <__memory/uninitialized_algorithms.h> #include <__memory/unique_ptr.h> #include <__memory/uses_allocator.h> // standard-mandated includes #if _LIBCPP_STD_VER >= 17 # include <__memory/construct_at.h> #endif #if _LIBCPP_STD_VER >= 20 # include <__memory/assume_aligned.h> # include <__memory/concepts.h> # include <__memory/ranges_construct_at.h> # include <__memory/ranges_uninitialized_algorithms.h> # include <__memory/uses_allocator_construction.h> #endif #if _LIBCPP_STD_VER >= 23 # include <__memory/allocate_at_least.h> #endif #include <version> // [memory.syn] #include <compare> #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) # pragma GCC system_header #endif #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 # include <atomic> # include <concepts> # include <cstddef> # include <cstdint> # include <cstdlib> # include <cstring> # include <iosfwd> # include <iterator> # include <new> # include <stdexcept> # include <tuple> # include <type_traits> # include <typeinfo> # include <utility> #endif #endif // _LIBCPP_MEMORY
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