| // -*- 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 |
| |
| /* |
| 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 |
| |
| 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> |
| struct allocation_result { |
| Pointer ptr; |
| size_t count; |
| }; // since C++23 |
| |
| template<class Allocator> |
| [[nodiscard]] constexpr allocation_result<typename allocator_traits<Allocator>::pointer> |
| allocate_at_least(Allocator& a, size_t n); // 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; |
| |
| 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 |
| typename constexpr add_lvalue_reference<T>::type operator*() const; // 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; |
| 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; |
| |
| // [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 |
| |
| } // std |
| |
| */ |
| |
| #include <__assert> // all public C++ headers provide the assertion handler |
| #include <__config> |
| #include <__memory/addressof.h> |
| #include <__memory/align.h> |
| #include <__memory/allocate_at_least.h> |
| #include <__memory/allocation_guard.h> |
| #include <__memory/allocator.h> |
| #include <__memory/allocator_arg_t.h> |
| #include <__memory/allocator_traits.h> |
| #include <__memory/assume_aligned.h> |
| #include <__memory/auto_ptr.h> |
| #include <__memory/compressed_pair.h> |
| #include <__memory/concepts.h> |
| #include <__memory/construct_at.h> |
| #include <__memory/pointer_traits.h> |
| #include <__memory/ranges_construct_at.h> |
| #include <__memory/ranges_uninitialized_algorithms.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> |
| #include <__memory/uses_allocator_construction.h> |
| #include <version> |
| |
| // standard-mandated includes |
| |
| // [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 |
