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Diffstat (limited to 'data/iphoneos-sdk/v1/memory')
| -rwxr-xr-x | data/iphoneos-sdk/v1/memory | 5604 |
1 files changed, 5604 insertions, 0 deletions
diff --git a/data/iphoneos-sdk/v1/memory b/data/iphoneos-sdk/v1/memory new file mode 100755 index 000000000..d6b427b94 --- /dev/null +++ b/data/iphoneos-sdk/v1/memory @@ -0,0 +1,5604 @@ +// -*- C++ -*- +//===-------------------------- memory ------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#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; +}; + +template <class T> constexpr T* to_address(T* p) noexcept; // C++20 +template <class Ptr> 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<U>::other | Alloc<T, Args...>; + template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>; + + static pointer allocate(allocator_type& a, size_type n); // [[nodiscard]] in C++20 + static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint); // [[nodiscard]] in C++20 + + static void deallocate(allocator_type& a, pointer p, size_type n) noexcept; + + template <class T, class... Args> + static void construct(allocator_type& a, T* p, Args&&... args); + + template <class T> + static void destroy(allocator_type& a, T* p); + + static size_type max_size(const allocator_type& a); // noexcept in C++14 + + static allocator_type + select_on_container_copy_construction(const allocator_type& a); +}; + +template <> +class allocator<void> +{ +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; + typedef const T* const_pointer; + typedef typename add_lvalue_reference<T>::type reference; + typedef typename add_lvalue_reference<const T>::type const_reference; + typedef T value_type; + + template <class U> struct rebind {typedef allocator<U> other;}; + + allocator() noexcept; + allocator(const allocator&) noexcept; + template <class U> allocator(const allocator<U>&) noexcept; + ~allocator(); + pointer address(reference x) const noexcept; + const_pointer address(const_reference x) const noexcept; + pointer allocate(size_type, allocator<void>::const_pointer hint = 0); + void deallocate(pointer p, size_type n) noexcept; + size_type max_size() const noexcept; + template<class U, class... Args> + void construct(U* p, Args&&... args); + template <class U> + void destroy(U* p); +}; + +template <class T, class U> +bool operator==(const allocator<T>&, const allocator<U>&) noexcept; + +template <class T, class U> +bool operator!=(const allocator<T>&, const allocator<U>&) noexcept; + +template <class OutputIterator, class T> +class raw_storage_iterator + : public iterator<output_iterator_tag, + T, // purposefully not C++03 + ptrdiff_t, // purposefully not C++03 + T*, // purposefully not C++03 + raw_storage_iterator&> // purposefully not C++03 +{ +public: + 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); + +template <class InputIterator, class Size, class ForwardIterator> +ForwardIterator +uninitialized_copy_n(InputIterator first, Size n, ForwardIterator result); + +template <class ForwardIterator, class T> +void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x); + +template <class ForwardIterator, class Size, class T> +ForwardIterator +uninitialized_fill_n(ForwardIterator first, Size n, const T& x); + +template <class T> +void destroy_at(T* location); + +template <class ForwardIterator> + void destroy(ForwardIterator first, ForwardIterator last); + +template <class ForwardIterator, class Size> + ForwardIterator destroy_n(ForwardIterator first, Size n); + +template <class InputIterator, class ForwardIterator> + ForwardIterator uninitialized_move(InputIterator first, InputIterator last, ForwardIterator result); + +template <class InputIterator, class Size, class ForwardIterator> + pair<InputIterator,ForwardIterator> uninitialized_move_n(InputIterator first, Size n, ForwardIterator result); + +template <class ForwardIterator> + void uninitialized_value_construct(ForwardIterator first, ForwardIterator last); + +template <class ForwardIterator, class Size> + ForwardIterator uninitialized_value_construct_n(ForwardIterator first, Size n); + +template <class ForwardIterator> + void uninitialized_default_construct(ForwardIterator first, ForwardIterator last); + +template <class ForwardIterator, class Size> + ForwardIterator uninitialized_default_construct_n(ForwardIterator first, Size n); + +template <class Y> struct auto_ptr_ref {}; // removed in C++17 + +template<class X> +class auto_ptr // 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> default_delete(const default_delete<U>&) noexcept; + + void operator()(T*) const noexcept; +}; + +template <class T> +struct default_delete<T[]> +{ + constexpr default_delete() noexcept = default; + void operator()(T*) const noexcept; + 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; + explicit unique_ptr(pointer p) noexcept; + unique_ptr(pointer p, see below d1) noexcept; + unique_ptr(pointer p, see below d2) noexcept; + unique_ptr(unique_ptr&& u) noexcept; + unique_ptr(nullptr_t) noexcept : unique_ptr() { } + template <class U, class E> + unique_ptr(unique_ptr<U, E>&& u) noexcept; + template <class U> + unique_ptr(auto_ptr<U>&& u) noexcept; // removed in C++17 + + // destructor + ~unique_ptr(); + + // assignment + unique_ptr& operator=(unique_ptr&& u) noexcept; + template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept; + unique_ptr& operator=(nullptr_t) noexcept; + + // observers + typename add_lvalue_reference<T>::type operator*() const; + pointer operator->() const noexcept; + pointer get() const noexcept; + deleter_type& get_deleter() noexcept; + const deleter_type& get_deleter() const noexcept; + explicit operator bool() const noexcept; + + // modifiers + pointer release() noexcept; + void reset(pointer p = pointer()) noexcept; + void swap(unique_ptr& u) noexcept; +}; + +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; + explicit unique_ptr(pointer p) noexcept; + unique_ptr(pointer p, see below d) noexcept; + unique_ptr(pointer p, see below d) noexcept; + unique_ptr(unique_ptr&& u) noexcept; + unique_ptr(nullptr_t) noexcept : unique_ptr() { } + + // destructor + ~unique_ptr(); + + // assignment + unique_ptr& operator=(unique_ptr&& u) noexcept; + unique_ptr& operator=(nullptr_t) noexcept; + + // observers + T& operator[](size_t i) const; + pointer get() const noexcept; + deleter_type& get_deleter() noexcept; + const deleter_type& get_deleter() const noexcept; + explicit operator bool() const noexcept; + + // modifiers + pointer release() noexcept; + void reset(pointer p = pointer()) noexcept; + void reset(nullptr_t) noexcept; + template <class U> void reset(U) = delete; + void swap(unique_ptr& u) noexcept; +}; + +template <class T, class D> + void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept; + +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> + 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 T, class D> + bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; +template <class T, class D> + bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept; +template <class T, class D> + bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept; +template <class T, class D> + bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept; + +template <class T, class D> + bool operator<(const unique_ptr<T, D>& x, nullptr_t); +template <class T, class D> + bool operator<(nullptr_t, const unique_ptr<T, D>& y); +template <class T, class D> + bool operator<=(const unique_ptr<T, D>& x, nullptr_t); +template <class T, class D> + bool operator<=(nullptr_t, const unique_ptr<T, D>& y); +template <class T, class D> + bool operator>(const unique_ptr<T, D>& x, nullptr_t); +template <class T, class D> + bool operator>(nullptr_t, const unique_ptr<T, D>& y); +template <class T, class D> + bool operator>=(const unique_ptr<T, D>& x, nullptr_t); +template <class T, class D> + bool operator>=(nullptr_t, const unique_ptr<T, D>& y); + +class bad_weak_ptr + : public std::exception +{ + bad_weak_ptr() noexcept; +}; + +template<class T, class... Args> unique_ptr<T> make_unique(Args&&... args); // C++14 +template<class T> unique_ptr<T> make_unique(size_t n); // C++14 +template<class T, class... Args> unspecified make_unique(Args&&...) = delete; // C++14, T == U[N] + +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; + 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; +}; + +// 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; +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; +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; + +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; +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; +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; +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; +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; +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; + +// 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); +template<class T, class A, class... Args> + shared_ptr<T> allocate_shared(const A& a, Args&&... args); + +template<class T> +class weak_ptr +{ +public: + typedef T element_type; + + // 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; +}; + +// 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; + +// Pointer safety +enum class pointer_safety { relaxed, preferred, strict }; +void declare_reachable(void *p); +template <class T> T *undeclare_reachable(T *p); +void declare_no_pointers(char *p, size_t n); +void undeclare_no_pointers(char *p, size_t n); +pointer_safety get_pointer_safety() noexcept; + +void* align(size_t alignment, size_t size, void*& ptr, size_t& space); + +} // std + +*/ + +#include <__config> +#include <type_traits> +#include <typeinfo> +#include <cstddef> +#include <cstdint> +#include <new> +#include <utility> +#include <limits> +#include <iterator> +#include <__functional_base> +#include <iosfwd> +#include <tuple> +#include <stdexcept> +#include <cstring> +#include <cassert> +#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) +# include <atomic> +#endif + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +#pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + + +_LIBCPP_BEGIN_NAMESPACE_STD + +template <class _ValueType> +inline _LIBCPP_ALWAYS_INLINE +_ValueType __libcpp_relaxed_load(_ValueType const* __value) { +#if !defined(_LIBCPP_HAS_NO_THREADS) && \ + defined(__ATOMIC_RELAXED) && \ + (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407) + return __atomic_load_n(__value, __ATOMIC_RELAXED); +#else + return *__value; +#endif +} + +template <class _ValueType> +inline _LIBCPP_ALWAYS_INLINE +_ValueType __libcpp_acquire_load(_ValueType const* __value) { +#if !defined(_LIBCPP_HAS_NO_THREADS) && \ + defined(__ATOMIC_ACQUIRE) && \ + (__has_builtin(__atomic_load_n) || _GNUC_VER >= 407) + return __atomic_load_n(__value, __ATOMIC_ACQUIRE); +#else + return *__value; +#endif +} + +// addressof moved to <type_traits> + +template <class _Tp> class allocator; + +template <> +class _LIBCPP_TEMPLATE_VIS allocator<void> +{ +public: + typedef void* pointer; + typedef const void* const_pointer; + typedef void value_type; + + template <class _Up> struct rebind {typedef allocator<_Up> other;}; +}; + +template <> +class _LIBCPP_TEMPLATE_VIS allocator<const void> +{ +public: + typedef const void* pointer; + typedef const void* const_pointer; + typedef const void value_type; + + template <class _Up> struct rebind {typedef allocator<_Up> other;}; +}; + +// pointer_traits + +template <class _Tp, class = void> +struct __has_element_type : false_type {}; + +template <class _Tp> +struct __has_element_type<_Tp, + typename __void_t<typename _Tp::element_type>::type> : true_type {}; + +template <class _Ptr, bool = __has_element_type<_Ptr>::value> +struct __pointer_traits_element_type; + +template <class _Ptr> +struct __pointer_traits_element_type<_Ptr, true> +{ + typedef typename _Ptr::element_type type; +}; + +#ifndef _LIBCPP_HAS_NO_VARIADICS + +template <template <class, class...> class _Sp, class _Tp, class ..._Args> +struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true> +{ + typedef typename _Sp<_Tp, _Args...>::element_type type; +}; + +template <template <class, class...> class _Sp, class _Tp, class ..._Args> +struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false> +{ + typedef _Tp type; +}; + +#else // _LIBCPP_HAS_NO_VARIADICS + +template <template <class> class _Sp, class _Tp> +struct __pointer_traits_element_type<_Sp<_Tp>, true> +{ + typedef typename _Sp<_Tp>::element_type type; +}; + +template <template <class> class _Sp, class _Tp> +struct __pointer_traits_element_type<_Sp<_Tp>, false> +{ + typedef _Tp type; +}; + +template <template <class, class> class _Sp, class _Tp, class _A0> +struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true> +{ + typedef typename _Sp<_Tp, _A0>::element_type type; +}; + +template <template <class, class> class _Sp, class _Tp, class _A0> +struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false> +{ + typedef _Tp type; +}; + +template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> +struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true> +{ + typedef typename _Sp<_Tp, _A0, _A1>::element_type type; +}; + +template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> +struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false> +{ + typedef _Tp type; +}; + +template <template <class, class, class, class> class _Sp, class _Tp, class _A0, + class _A1, class _A2> +struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true> +{ + typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type; +}; + +template <template <class, class, class, class> class _Sp, class _Tp, class _A0, + class _A1, class _A2> +struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false> +{ + typedef _Tp type; +}; + +#endif // _LIBCPP_HAS_NO_VARIADICS + +template <class _Tp, class = void> +struct __has_difference_type : false_type {}; + +template <class _Tp> +struct __has_difference_type<_Tp, + typename __void_t<typename _Tp::difference_type>::type> : true_type {}; + +template <class _Ptr, bool = __has_difference_type<_Ptr>::value> +struct __pointer_traits_difference_type +{ + typedef ptrdiff_t type; +}; + +template <class _Ptr> +struct __pointer_traits_difference_type<_Ptr, true> +{ + typedef typename _Ptr::difference_type type; +}; + +template <class _Tp, class _Up> +struct __has_rebind +{ +private: + struct __two {char __lx; char __lxx;}; + template <class _Xp> static __two __test(...); + template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0); +public: + static const bool value = sizeof(__test<_Tp>(0)) == 1; +}; + +template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> +struct __pointer_traits_rebind +{ +#ifndef _LIBCPP_CXX03_LANG + typedef typename _Tp::template rebind<_Up> type; +#else + typedef typename _Tp::template rebind<_Up>::other type; +#endif +}; + +#ifndef _LIBCPP_HAS_NO_VARIADICS + +template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> +struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true> +{ +#ifndef _LIBCPP_CXX03_LANG + typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type; +#else + typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type; +#endif +}; + +template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> +struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false> +{ + typedef _Sp<_Up, _Args...> type; +}; + +#else // _LIBCPP_HAS_NO_VARIADICS + +template <template <class> class _Sp, class _Tp, class _Up> +struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true> +{ +#ifndef _LIBCPP_CXX03_LANG + typedef typename _Sp<_Tp>::template rebind<_Up> type; +#else + typedef typename _Sp<_Tp>::template rebind<_Up>::other type; +#endif +}; + +template <template <class> class _Sp, class _Tp, class _Up> +struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false> +{ + typedef _Sp<_Up> type; +}; + +template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> +struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true> +{ +#ifndef _LIBCPP_CXX03_LANG + typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type; +#else + typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type; +#endif +}; + +template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> +struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false> +{ + typedef _Sp<_Up, _A0> type; +}; + +template <template <class, class, class> class _Sp, class _Tp, class _A0, + class _A1, class _Up> +struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true> +{ +#ifndef _LIBCPP_CXX03_LANG + typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type; +#else + typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type; +#endif +}; + +template <template <class, class, class> class _Sp, class _Tp, class _A0, + class _A1, class _Up> +struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false> +{ + typedef _Sp<_Up, _A0, _A1> type; +}; + +template <template <class, class, class, class> class _Sp, class _Tp, class _A0, + class _A1, class _A2, class _Up> +struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true> +{ +#ifndef _LIBCPP_CXX03_LANG + typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type; +#else + typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; +#endif +}; + +template <template <class, class, class, class> class _Sp, class _Tp, class _A0, + class _A1, class _A2, class _Up> +struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false> +{ + typedef _Sp<_Up, _A0, _A1, _A2> type; +}; + +#endif // _LIBCPP_HAS_NO_VARIADICS + +template <class _Ptr> +struct _LIBCPP_TEMPLATE_VIS pointer_traits +{ + typedef _Ptr pointer; + typedef typename __pointer_traits_element_type<pointer>::type element_type; + typedef typename __pointer_traits_difference_type<pointer>::type difference_type; + +#ifndef _LIBCPP_CXX03_LANG + template <class _Up> using rebind = typename __pointer_traits_rebind<pointer, _Up>::type; +#else + template <class _Up> struct rebind + {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;}; +#endif // _LIBCPP_CXX03_LANG + +private: + struct __nat {}; +public: + _LIBCPP_INLINE_VISIBILITY + static pointer pointer_to(typename conditional<is_void<element_type>::value, + __nat, element_type>::type& __r) + {return pointer::pointer_to(__r);} +}; + +template <class _Tp> +struct _LIBCPP_TEMPLATE_VIS pointer_traits<_Tp*> +{ + typedef _Tp* pointer; + typedef _Tp element_type; + typedef ptrdiff_t difference_type; + +#ifndef _LIBCPP_CXX03_LANG + template <class _Up> using rebind = _Up*; +#else + template <class _Up> struct rebind {typedef _Up* other;}; +#endif + +private: + struct __nat {}; +public: + _LIBCPP_INLINE_VISIBILITY + static pointer pointer_to(typename conditional<is_void<element_type>::value, + __nat, element_type>::type& __r) _NOEXCEPT + {return _VSTD::addressof(__r);} +}; + +template <class _From, class _To> +struct __rebind_pointer { +#ifndef _LIBCPP_CXX03_LANG + typedef typename pointer_traits<_From>::template rebind<_To> type; +#else + typedef typename pointer_traits<_From>::template rebind<_To>::other type; +#endif +}; + +// allocator_traits + +template <class _Tp, class = void> +struct __has_pointer_type : false_type {}; + +template <class _Tp> +struct __has_pointer_type<_Tp, + typename __void_t<typename _Tp::pointer>::type> : true_type {}; + +namespace __pointer_type_imp +{ + +template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value> +struct __pointer_type +{ + typedef typename _Dp::pointer type; +}; + +template <class _Tp, class _Dp> +struct __pointer_type<_Tp, _Dp, false> +{ + typedef _Tp* type; +}; + +} // __pointer_type_imp + +template <class _Tp, class _Dp> +struct __pointer_type +{ + typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type; +}; + +template <class _Tp, class = void> +struct __has_const_pointer : false_type {}; + +template <class _Tp> +struct __has_const_pointer<_Tp, + typename __void_t<typename _Tp::const_pointer>::type> : true_type {}; + +template <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value> +struct __const_pointer +{ + typedef typename _Alloc::const_pointer type; +}; + +template <class _Tp, class _Ptr, class _Alloc> +struct __const_pointer<_Tp, _Ptr, _Alloc, false> +{ +#ifndef _LIBCPP_CXX03_LANG + typedef typename pointer_traits<_Ptr>::template rebind<const _Tp> type; +#else + typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type; +#endif +}; + +template <class _Tp, class = void> +struct __has_void_pointer : false_type {}; + +template <class _Tp> +struct __has_void_pointer<_Tp, + typename __void_t<typename _Tp::void_pointer>::type> : true_type {}; + +template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value> +struct __void_pointer +{ + typedef typename _Alloc::void_pointer type; +}; + +template <class _Ptr, class _Alloc> +struct __void_pointer<_Ptr, _Alloc, false> +{ +#ifndef _LIBCPP_CXX03_LANG + typedef typename pointer_traits<_Ptr>::template rebind<void> type; +#else + typedef typename pointer_traits<_Ptr>::template rebind<void>::other type; +#endif +}; + +template <class _Tp, class = void> +struct __has_const_void_pointer : false_type {}; + +template <class _Tp> +struct __has_const_void_pointer<_Tp, + typename __void_t<typename _Tp::const_void_pointer>::type> : true_type {}; + +template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value> +struct __const_void_pointer +{ + typedef typename _Alloc::const_void_pointer type; +}; + +template <class _Ptr, class _Alloc> +struct __const_void_pointer<_Ptr, _Alloc, false> +{ +#ifndef _LIBCPP_CXX03_LANG + typedef typename pointer_traits<_Ptr>::template rebind<const void> type; +#else + typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type; +#endif +}; + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +_Tp* +__to_raw_pointer(_Tp* __p) _NOEXCEPT +{ + return __p; +} + +#if _LIBCPP_STD_VER <= 17 +template <class _Pointer> +inline _LIBCPP_INLINE_VISIBILITY +typename pointer_traits<_Pointer>::element_type* +__to_raw_pointer(_Pointer __p) _NOEXCEPT +{ + return _VSTD::__to_raw_pointer(__p.operator->()); +} +#else +template <class _Pointer> +inline _LIBCPP_INLINE_VISIBILITY +auto +__to_raw_pointer(const _Pointer& __p) _NOEXCEPT +-> decltype(pointer_traits<_Pointer>::to_address(__p)) +{ + return pointer_traits<_Pointer>::to_address(__p); +} + +template <class _Pointer, class... _None> +inline _LIBCPP_INLINE_VISIBILITY +auto +__to_raw_pointer(const _Pointer& __p, _None...) _NOEXCEPT +{ + return _VSTD::__to_raw_pointer(__p.operator->()); +} + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY constexpr +_Tp* +to_address(_Tp* __p) _NOEXCEPT +{ + static_assert(!is_function_v<_Tp>, "_Tp is a function type"); + return __p; +} + +template <class _Pointer> +inline _LIBCPP_INLINE_VISIBILITY +auto +to_address(const _Pointer& __p) _NOEXCEPT +{ + return _VSTD::__to_raw_pointer(__p); +} +#endif + +template <class _Tp, class = void> +struct __has_size_type : false_type {}; + +template <class _Tp> +struct __has_size_type<_Tp, + typename __void_t<typename _Tp::size_type>::type> : true_type {}; + +template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value> +struct __size_type +{ + typedef typename make_unsigned<_DiffType>::type type; +}; + +template <class _Alloc, class _DiffType> +struct __size_type<_Alloc, _DiffType, true> +{ + typedef typename _Alloc::size_type type; +}; + +template <class _Tp, class = void> +struct __has_propagate_on_container_copy_assignment : false_type {}; + +template <class _Tp> +struct __has_propagate_on_container_copy_assignment<_Tp, + typename __void_t<typename _Tp::propagate_on_container_copy_assignment>::type> + : true_type {}; + +template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value> +struct __propagate_on_container_copy_assignment +{ + typedef false_type type; +}; + +template <class _Alloc> +struct __propagate_on_container_copy_assignment<_Alloc, true> +{ + typedef typename _Alloc::propagate_on_container_copy_assignment type; +}; + +template <class _Tp, class = void> +struct __has_propagate_on_container_move_assignment : false_type {}; + +template <class _Tp> +struct __has_propagate_on_container_move_assignment<_Tp, + typename __void_t<typename _Tp::propagate_on_container_move_assignment>::type> + : true_type {}; + +template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value> +struct __propagate_on_container_move_assignment +{ + typedef false_type type; +}; + +template <class _Alloc> +struct __propagate_on_container_move_assignment<_Alloc, true> +{ + typedef typename _Alloc::propagate_on_container_move_assignment type; +}; + +template <class _Tp, class = void> +struct __has_propagate_on_container_swap : false_type {}; + +template <class _Tp> +struct __has_propagate_on_container_swap<_Tp, + typename __void_t<typename _Tp::propagate_on_container_swap>::type> + : true_type {}; + +template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value> +struct __propagate_on_container_swap +{ + typedef false_type type; +}; + +template <class _Alloc> +struct __propagate_on_container_swap<_Alloc, true> +{ + typedef typename _Alloc::propagate_on_container_swap type; +}; + +template <class _Tp, class = void> +struct __has_is_always_equal : false_type {}; + +template <class _Tp> +struct __has_is_always_equal<_Tp, + typename __void_t<typename _Tp::is_always_equal>::type> + : true_type {}; + +template <class _Alloc, bool = __has_is_always_equal<_Alloc>::value> +struct __is_always_equal +{ + typedef typename _VSTD::is_empty<_Alloc>::type type; +}; + +template <class _Alloc> +struct __is_always_equal<_Alloc, true> +{ + typedef typename _Alloc::is_always_equal type; +}; + +template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> +struct __has_rebind_other +{ +private: + struct __two {char __lx; char __lxx;}; + template <class _Xp> static __two __test(...); + template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0); +public: + static const bool value = sizeof(__test<_Tp>(0)) == 1; +}; + +template <class _Tp, class _Up> +struct __has_rebind_other<_Tp, _Up, false> +{ + static const bool value = false; +}; + +template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value> +struct __allocator_traits_rebind +{ + typedef typename _Tp::template rebind<_Up>::other type; +}; + +#ifndef _LIBCPP_HAS_NO_VARIADICS + +template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> +struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true> +{ + typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type; +}; + +template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> +struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false> +{ + typedef _Alloc<_Up, _Args...> type; +}; + +#else // _LIBCPP_HAS_NO_VARIADICS + +template <template <class> class _Alloc, class _Tp, class _Up> +struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true> +{ + typedef typename _Alloc<_Tp>::template rebind<_Up>::other type; +}; + +template <template <class> class _Alloc, class _Tp, class _Up> +struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false> +{ + typedef _Alloc<_Up> type; +}; + +template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> +struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true> +{ + typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type; +}; + +template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> +struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false> +{ + typedef _Alloc<_Up, _A0> type; +}; + +template <template <class, class, class> class _Alloc, class _Tp, class _A0, + class _A1, class _Up> +struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true> +{ + typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type; +}; + +template <template <class, class, class> class _Alloc, class _Tp, class _A0, + class _A1, class _Up> +struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false> +{ + typedef _Alloc<_Up, _A0, _A1> type; +}; + +template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, + class _A1, class _A2, class _Up> +struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true> +{ + typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; +}; + +template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, + class _A1, class _A2, class _Up> +struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false> +{ + typedef _Alloc<_Up, _A0, _A1, _A2> type; +}; + +#endif // _LIBCPP_HAS_NO_VARIADICS + +#ifndef _LIBCPP_CXX03_LANG + +template <class _Alloc, class _SizeType, class _ConstVoidPtr> +auto +__has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) + -> decltype((void)__a.allocate(__sz, __p), true_type()); + +template <class _Alloc, class _SizeType, class _ConstVoidPtr> +auto +__has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) + -> false_type; + +template <class _Alloc, class _SizeType, class _ConstVoidPtr> +struct __has_allocate_hint + : integral_constant<bool, + is_same< + decltype(_VSTD::__has_allocate_hint_test(declval<_Alloc>(), + declval<_SizeType>(), + declval<_ConstVoidPtr>())), + true_type>::value> +{ +}; + +#else // _LIBCPP_CXX03_LANG + +template <class _Alloc, class _SizeType, class _ConstVoidPtr> +struct __has_allocate_hint + : true_type +{ +}; + +#endif // _LIBCPP_CXX03_LANG + +#if !defined(_LIBCPP_CXX03_LANG) + +template <class _Alloc, class _Tp, class ..._Args> +decltype(_VSTD::declval<_Alloc>().construct(_VSTD::declval<_Tp*>(), + _VSTD::declval<_Args>()...), + true_type()) +__has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args); + +template <class _Alloc, class _Pointer, class ..._Args> +false_type +__has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args); + +template <class _Alloc, class _Pointer, class ..._Args> +struct __has_construct + : integral_constant<bool, + is_same< + decltype(_VSTD::__has_construct_test(declval<_Alloc>(), + declval<_Pointer>(), + declval<_Args>()...)), + true_type>::value> +{ +}; + +template <class _Alloc, class _Pointer> +auto +__has_destroy_test(_Alloc&& __a, _Pointer&& __p) + -> decltype(__a.destroy(__p), true_type()); + +template <class _Alloc, class _Pointer> +auto +__has_destroy_test(const _Alloc& __a, _Pointer&& __p) + -> false_type; + +template <class _Alloc, class _Pointer> +struct __has_destroy + : integral_constant<bool, + is_same< + decltype(_VSTD::__has_destroy_test(declval<_Alloc>(), + declval<_Pointer>())), + true_type>::value> +{ +}; + +template <class _Alloc> +auto +__has_max_size_test(_Alloc&& __a) + -> decltype(__a.max_size(), true_type()); + +template <class _Alloc> +auto +__has_max_size_test(const volatile _Alloc& __a) + -> false_type; + +template <class _Alloc> +struct __has_max_size + : integral_constant<bool, + is_same< + decltype(_VSTD::__has_max_size_test(declval<_Alloc&>())), + true_type>::value> +{ +}; + +template <class _Alloc> +auto +__has_select_on_container_copy_construction_test(_Alloc&& __a) + -> decltype(__a.select_on_container_copy_construction(), true_type()); + +template <class _Alloc> +auto +__has_select_on_container_copy_construction_test(const volatile _Alloc& __a) + -> false_type; + +template <class _Alloc> +struct __has_select_on_container_copy_construction + : integral_constant<bool, + is_same< + decltype(_VSTD::__has_select_on_container_copy_construction_test(declval<_Alloc&>())), + true_type>::value> +{ +}; + +#else // _LIBCPP_CXX03_LANG + +#ifndef _LIBCPP_HAS_NO_VARIADICS + +template <class _Alloc, class _Pointer, class ..._Args> +struct __has_construct + : false_type +{ +}; + +#else // _LIBCPP_HAS_NO_VARIADICS + +template <class _Alloc, class _Pointer, class _Args> +struct __has_construct + : false_type +{ +}; + +#endif // _LIBCPP_HAS_NO_VARIADICS + +template <class _Alloc, class _Pointer> +struct __has_destroy + : false_type +{ +}; + +template <class _Alloc> +struct __has_max_size + : true_type +{ +}; + +template <class _Alloc> +struct __has_select_on_container_copy_construction + : false_type +{ +}; + +#endif // _LIBCPP_CXX03_LANG + +template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value> +struct __alloc_traits_difference_type +{ + typedef typename pointer_traits<_Ptr>::difference_type type; +}; + +template <class _Alloc, class _Ptr> +struct __alloc_traits_difference_type<_Alloc, _Ptr, true> +{ + typedef typename _Alloc::difference_type type; +}; + +template <class _Alloc> +struct _LIBCPP_TEMPLATE_VIS allocator_traits +{ + typedef _Alloc allocator_type; + typedef typename allocator_type::value_type value_type; + + typedef typename __pointer_type<value_type, allocator_type>::type pointer; + typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer; + typedef typename __void_pointer<pointer, allocator_type>::type void_pointer; + typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer; + + typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type; + typedef typename __size_type<allocator_type, difference_type>::type size_type; + + typedef typename __propagate_on_container_copy_assignment<allocator_type>::type + propagate_on_container_copy_assignment; + typedef typename __propagate_on_container_move_assignment<allocator_type>::type + propagate_on_container_move_assignment; + typedef typename __propagate_on_container_swap<allocator_type>::type + propagate_on_container_swap; + typedef typename __is_always_equal<allocator_type>::type + is_always_equal; + +#ifndef _LIBCPP_CXX03_LANG + template <class _Tp> using rebind_alloc = + typename __allocator_traits_rebind<allocator_type, _Tp>::type; + template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>; +#else // _LIBCPP_CXX03_LANG + template <class _Tp> struct rebind_alloc + {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;}; + template <class _Tp> struct rebind_traits + {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;}; +#endif // _LIBCPP_CXX03_LANG + + _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY + static pointer allocate(allocator_type& __a, size_type __n) + {return __a.allocate(__n);} + _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY + static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint) + {return __allocate(__a, __n, __hint, + __has_allocate_hint<allocator_type, size_type, const_void_pointer>());} + + _LIBCPP_INLINE_VISIBILITY + static void deallocate(allocator_type& __a, pointer __p, size_type __n) _NOEXCEPT + {__a.deallocate(__p, __n);} + +#ifndef _LIBCPP_HAS_NO_VARIADICS + template <class _Tp, class... _Args> + _LIBCPP_INLINE_VISIBILITY + static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args) + {__construct(__has_construct<allocator_type, _Tp*, _Args...>(), + __a, __p, _VSTD::forward<_Args>(__args)...);} +#else // _LIBCPP_HAS_NO_VARIADICS + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY + static void construct(allocator_type&, _Tp* __p) + { + ::new ((void*)__p) _Tp(); + } + template <class _Tp, class _A0> + _LIBCPP_INLINE_VISIBILITY + static void construct(allocator_type&, _Tp* __p, const _A0& __a0) + { + ::new ((void*)__p) _Tp(__a0); + } + template <class _Tp, class _A0, class _A1> + _LIBCPP_INLINE_VISIBILITY + static void construct(allocator_type&, _Tp* __p, const _A0& __a0, + const _A1& __a1) + { + ::new ((void*)__p) _Tp(__a0, __a1); + } + template <class _Tp, class _A0, class _A1, class _A2> + _LIBCPP_INLINE_VISIBILITY + static void construct(allocator_type&, _Tp* __p, const _A0& __a0, + const _A1& __a1, const _A2& __a2) + { + ::new ((void*)__p) _Tp(__a0, __a1, __a2); + } +#endif // _LIBCPP_HAS_NO_VARIADICS + + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY + static void destroy(allocator_type& __a, _Tp* __p) + {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);} + + _LIBCPP_INLINE_VISIBILITY + static size_type max_size(const allocator_type& __a) _NOEXCEPT + {return __max_size(__has_max_size<const allocator_type>(), __a);} + + _LIBCPP_INLINE_VISIBILITY + static allocator_type + select_on_container_copy_construction(const allocator_type& __a) + {return __select_on_container_copy_construction( + __has_select_on_container_copy_construction<const allocator_type>(), + __a);} + + template <class _Ptr> + _LIBCPP_INLINE_VISIBILITY + static + void + __construct_forward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) + { + for (; __begin1 != __end1; ++__begin1, ++__begin2) + construct(__a, _VSTD::__to_raw_pointer(__begin2), _VSTD::move_if_noexcept(*__begin1)); + } + + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY + static + typename enable_if + < + (is_same<allocator_type, allocator<_Tp> >::value + || !__has_construct<allocator_type, _Tp*, _Tp>::value) && + is_trivially_move_constructible<_Tp>::value, + void + >::type + __construct_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) + { + ptrdiff_t _Np = __end1 - __begin1; + if (_Np > 0) + { + _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp)); + __begin2 += _Np; + } + } + + template <class _Iter, class _Ptr> + _LIBCPP_INLINE_VISIBILITY + static + void + __construct_range_forward(allocator_type& __a, _Iter __begin1, _Iter __end1, _Ptr& __begin2) + { + for (; __begin1 != __end1; ++__begin1, (void) ++__begin2) + construct(__a, _VSTD::__to_raw_pointer(__begin2), *__begin1); + } + + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY + static + typename enable_if + < + (is_same<allocator_type, allocator<_Tp> >::value + || !__has_construct<allocator_type, _Tp*, _Tp>::value) && + is_trivially_move_constructible<_Tp>::value, + void + >::type + __construct_range_forward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) + { + typedef typename remove_const<_Tp>::type _Vp; + ptrdiff_t _Np = __end1 - __begin1; + if (_Np > 0) + { + _VSTD::memcpy(const_cast<_Vp*>(__begin2), __begin1, _Np * sizeof(_Tp)); + __begin2 += _Np; + } + } + + template <class _Ptr> + _LIBCPP_INLINE_VISIBILITY + static + void + __construct_backward(allocator_type& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2) + { + while (__end1 != __begin1) + { + construct(__a, _VSTD::__to_raw_pointer(__end2-1), _VSTD::move_if_noexcept(*--__end1)); + --__end2; + } + } + + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY + static + typename enable_if + < + (is_same<allocator_type, allocator<_Tp> >::value + || !__has_construct<allocator_type, _Tp*, _Tp>::value) && + is_trivially_move_constructible<_Tp>::value, + void + >::type + __construct_backward(allocator_type&, _Tp* __begin1, _Tp* __end1, _Tp*& __end2) + { + ptrdiff_t _Np = __end1 - __begin1; + __end2 -= _Np; + if (_Np > 0) + _VSTD::memcpy(__end2, __begin1, _Np * sizeof(_Tp)); + } + +private: + + _LIBCPP_INLINE_VISIBILITY + static pointer __allocate(allocator_type& __a, size_type __n, + const_void_pointer __hint, true_type) + {return __a.allocate(__n, __hint);} + _LIBCPP_INLINE_VISIBILITY + static pointer __allocate(allocator_type& __a, size_type __n, + const_void_pointer, false_type) + {return __a.allocate(__n);} + +#ifndef _LIBCPP_HAS_NO_VARIADICS + template <class _Tp, class... _Args> + _LIBCPP_INLINE_VISIBILITY + static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args) + {__a.construct(__p, _VSTD::forward<_Args>(__args)...);} + template <class _Tp, class... _Args> + _LIBCPP_INLINE_VISIBILITY + static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args) + { + ::new ((void*)__p) _Tp(_VSTD::forward<_Args>(__args)...); + } +#endif // _LIBCPP_HAS_NO_VARIADICS + + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY + static void __destroy(true_type, allocator_type& __a, _Tp* __p) + {__a.destroy(__p);} + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY + static void __destroy(false_type, allocator_type&, _Tp* __p) + { + __p->~_Tp(); + } + + _LIBCPP_INLINE_VISIBILITY + static size_type __max_size(true_type, const allocator_type& __a) _NOEXCEPT + {return __a.max_size();} + _LIBCPP_INLINE_VISIBILITY + static size_type __max_size(false_type, const allocator_type&) _NOEXCEPT + {return numeric_limits<size_type>::max() / sizeof(value_type);} + + _LIBCPP_INLINE_VISIBILITY + static allocator_type + __select_on_container_copy_construction(true_type, const allocator_type& __a) + {return __a.select_on_container_copy_construction();} + _LIBCPP_INLINE_VISIBILITY + static allocator_type + __select_on_container_copy_construction(false_type, const allocator_type& __a) + {return __a;} +}; + +template <class _Traits, class _Tp> +struct __rebind_alloc_helper +{ +#ifndef _LIBCPP_CXX03_LANG + typedef typename _Traits::template rebind_alloc<_Tp> type; +#else + typedef typename _Traits::template rebind_alloc<_Tp>::other type; +#endif +}; + +// allocator + +template <class _Tp> +class _LIBCPP_TEMPLATE_VIS allocator +{ +public: + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef _Tp* pointer; + typedef const _Tp* const_pointer; + typedef _Tp& reference; + typedef const _Tp& const_reference; + typedef _Tp value_type; + + typedef true_type propagate_on_container_move_assignment; + typedef true_type is_always_equal; + + template <class _Up> struct rebind {typedef allocator<_Up> other;}; + + _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} + template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} + _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const _NOEXCEPT + {return _VSTD::addressof(__x);} + _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT + {return _VSTD::addressof(__x);} + _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY + pointer allocate(size_type __n, allocator<void>::const_pointer = 0) + { + if (__n > max_size()) + __throw_length_error("allocator<T>::allocate(size_t n)" + " 'n' exceeds maximum supported size"); + return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp))); + } + _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT + {_VSTD::__libcpp_deallocate((void*)__p);} + _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT + {return size_type(~0) / sizeof(_Tp);} +#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) + template <class _Up, class... _Args> + _LIBCPP_INLINE_VISIBILITY + void + construct(_Up* __p, _Args&&... __args) + { + ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); + } +#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p) + { + ::new((void*)__p) _Tp(); + } +# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) + + template <class _A0> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, _A0& __a0) + { + ::new((void*)__p) _Tp(__a0); + } + template <class _A0> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, const _A0& __a0) + { + ::new((void*)__p) _Tp(__a0); + } +# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) + template <class _A0, class _A1> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, _A0& __a0, _A1& __a1) + { + ::new((void*)__p) _Tp(__a0, __a1); + } + template <class _A0, class _A1> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, const _A0& __a0, _A1& __a1) + { + ::new((void*)__p) _Tp(__a0, __a1); + } + template <class _A0, class _A1> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, _A0& __a0, const _A1& __a1) + { + ::new((void*)__p) _Tp(__a0, __a1); + } + template <class _A0, class _A1> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, const _A0& __a0, const _A1& __a1) + { + ::new((void*)__p) _Tp(__a0, __a1); + } +#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) + _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} +}; + +template <class _Tp> +class _LIBCPP_TEMPLATE_VIS allocator<const _Tp> +{ +public: + typedef size_t size_type; + typedef ptrdiff_t difference_type; + typedef const _Tp* pointer; + typedef const _Tp* const_pointer; + typedef const _Tp& reference; + typedef const _Tp& const_reference; + typedef const _Tp value_type; + + typedef true_type propagate_on_container_move_assignment; + typedef true_type is_always_equal; + + template <class _Up> struct rebind {typedef allocator<_Up> other;}; + + _LIBCPP_INLINE_VISIBILITY allocator() _NOEXCEPT {} + template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) _NOEXCEPT {} + _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const _NOEXCEPT + {return _VSTD::addressof(__x);} + _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) + { + if (__n > max_size()) + __throw_length_error("allocator<const T>::allocate(size_t n)" + " 'n' exceeds maximum supported size"); + return static_cast<pointer>(_VSTD::__allocate(__n * sizeof(_Tp))); + } + _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) _NOEXCEPT + {_VSTD::__libcpp_deallocate((void*) const_cast<_Tp *>(__p));} + _LIBCPP_INLINE_VISIBILITY size_type max_size() const _NOEXCEPT + {return size_type(~0) / sizeof(_Tp);} +#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) + template <class _Up, class... _Args> + _LIBCPP_INLINE_VISIBILITY + void + construct(_Up* __p, _Args&&... __args) + { + ::new((void*)__p) _Up(_VSTD::forward<_Args>(__args)...); + } +#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p) + { + ::new((void*) const_cast<_Tp *>(__p)) _Tp(); + } +# if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) + + template <class _A0> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, _A0& __a0) + { + ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0); + } + template <class _A0> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, const _A0& __a0) + { + ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0); + } +# endif // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) + template <class _A0, class _A1> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, _A0& __a0, _A1& __a1) + { + ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1); + } + template <class _A0, class _A1> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, const _A0& __a0, _A1& __a1) + { + ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1); + } + template <class _A0, class _A1> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, _A0& __a0, const _A1& __a1) + { + ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1); + } + template <class _A0, class _A1> + _LIBCPP_INLINE_VISIBILITY + void + construct(pointer __p, const _A0& __a0, const _A1& __a1) + { + ::new((void*) const_cast<_Tp *>(__p)) _Tp(__a0, __a1); + } +#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) + _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} +}; + +template <class _Tp, class _Up> +inline _LIBCPP_INLINE_VISIBILITY +bool operator==(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return true;} + +template <class _Tp, class _Up> +inline _LIBCPP_INLINE_VISIBILITY +bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) _NOEXCEPT {return false;} + +template <class _OutputIterator, class _Tp> +class _LIBCPP_TEMPLATE_VIS raw_storage_iterator + : public iterator<output_iterator_tag, + _Tp, // purposefully not C++03 + ptrdiff_t, // purposefully not C++03 + _Tp*, // purposefully not C++03 + raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03 +{ +private: + _OutputIterator __x_; +public: + _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} + _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;} + _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element) + {::new(&*__x_) _Tp(__element); return *this;} +#if _LIBCPP_STD_VER >= 14 + _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element) + {::new(&*__x_) _Tp(_VSTD::move(__element)); return *this;} +#endif + _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;} + _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int) + {raw_storage_iterator __t(*this); ++__x_; return __t;} +#if _LIBCPP_STD_VER >= 14 + _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; } +#endif +}; + +template <class _Tp> +pair<_Tp*, ptrdiff_t> +get_temporary_buffer(ptrdiff_t __n) _NOEXCEPT +{ + pair<_Tp*, ptrdiff_t> __r(0, 0); + const ptrdiff_t __m = (~ptrdiff_t(0) ^ + ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1))) + / sizeof(_Tp); + if (__n > __m) + __n = __m; + while (__n > 0) + { + __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow)); + if (__r.first) + { + __r.second = __n; + break; + } + __n /= 2; + } + return __r; +} + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +void return_temporary_buffer(_Tp* __p) _NOEXCEPT {::operator delete(__p);} + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) +template <class _Tp> +struct auto_ptr_ref +{ + _Tp* __ptr_; +}; + +template<class _Tp> +class _LIBCPP_TEMPLATE_VIS auto_ptr +{ +private: + _Tp* __ptr_; +public: + typedef _Tp element_type; + + _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {} + _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {} + template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw() + : __ptr_(__p.release()) {} + _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw() + {reset(__p.release()); return *this;} + template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw() + {reset(__p.release()); return *this;} + _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw() + {reset(__p.__ptr_); return *this;} + _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;} + + _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw() + {return *__ptr_;} + _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;} + _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;} + _LIBCPP_INLINE_VISIBILITY _Tp* release() throw() + { + _Tp* __t = __ptr_; + __ptr_ = 0; + return __t; + } + _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw() + { + if (__ptr_ != __p) + delete __ptr_; + __ptr_ = __p; + } + + _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {} + template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw() + {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;} + template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw() + {return auto_ptr<_Up>(release());} +}; + +template <> +class _LIBCPP_TEMPLATE_VIS auto_ptr<void> +{ +public: + typedef void element_type; +}; +#endif + +template <class _Tp, int _Idx, + bool _CanBeEmptyBase = + is_empty<_Tp>::value && !__libcpp_is_final<_Tp>::value> +struct __compressed_pair_elem { + typedef _Tp _ParamT; + typedef _Tp& reference; + typedef const _Tp& const_reference; + +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY constexpr __compressed_pair_elem() : __value_() {} + + template <class _Up, class = typename enable_if< + !is_same<__compressed_pair_elem, typename decay<_Up>::type>::value + >::type> + _LIBCPP_INLINE_VISIBILITY + constexpr explicit + __compressed_pair_elem(_Up&& __u) + : __value_(_VSTD::forward<_Up>(__u)){}; + + template <class... _Args, size_t... _Indexes> + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 + __compressed_pair_elem(piecewise_construct_t, tuple<_Args...> __args, + __tuple_indices<_Indexes...>) + : __value_(_VSTD::forward<_Args>(_VSTD::get<_Indexes>(__args))...) {} +#else + _LIBCPP_INLINE_VISIBILITY __compressed_pair_elem() : __value_() {} + _LIBCPP_INLINE_VISIBILITY + __compressed_pair_elem(_ParamT __p) : __value_(std::forward<_ParamT>(__p)) {} +#endif + + _LIBCPP_INLINE_VISIBILITY reference __get() _NOEXCEPT { return __value_; } + _LIBCPP_INLINE_VISIBILITY + const_reference __get() const _NOEXCEPT { return __value_; } + +private: + _Tp __value_; +}; + +template <class _Tp, int _Idx> +struct __compressed_pair_elem<_Tp, _Idx, true> : private _Tp { + typedef _Tp _ParamT; + typedef _Tp& reference; + typedef const _Tp& const_reference; + typedef _Tp __value_type; + +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY constexpr __compressed_pair_elem() = default; + + template <class _Up, class = typename enable_if< + !is_same<__compressed_pair_elem, typename decay<_Up>::type>::value + >::type> + _LIBCPP_INLINE_VISIBILITY + constexpr explicit + __compressed_pair_elem(_Up&& __u) + : __value_type(_VSTD::forward<_Up>(__u)){}; + + template <class... _Args, size_t... _Indexes> + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 + __compressed_pair_elem(piecewise_construct_t, tuple<_Args...> __args, + __tuple_indices<_Indexes...>) + : __value_type(_VSTD::forward<_Args>(_VSTD::get<_Indexes>(__args))...) {} +#else + _LIBCPP_INLINE_VISIBILITY __compressed_pair_elem() : __value_type() {} + _LIBCPP_INLINE_VISIBILITY + __compressed_pair_elem(_ParamT __p) + : __value_type(std::forward<_ParamT>(__p)) {} +#endif + + _LIBCPP_INLINE_VISIBILITY reference __get() _NOEXCEPT { return *this; } + _LIBCPP_INLINE_VISIBILITY + const_reference __get() const _NOEXCEPT { return *this; } +}; + +// Tag used to construct the second element of the compressed pair. +struct __second_tag {}; + +template <class _T1, class _T2> +class __compressed_pair : private __compressed_pair_elem<_T1, 0>, + private __compressed_pair_elem<_T2, 1> { + typedef __compressed_pair_elem<_T1, 0> _Base1; + typedef __compressed_pair_elem<_T2, 1> _Base2; + + // NOTE: This static assert should never fire because __compressed_pair + // is *almost never* used in a scenario where it's possible for T1 == T2. + // (The exception is std::function where it is possible that the function + // object and the allocator have the same type). + static_assert((!is_same<_T1, _T2>::value), + "__compressed_pair cannot be instantated when T1 and T2 are the same type; " + "The current implementation is NOT ABI-compatible with the previous " + "implementation for this configuration"); + +public: +#ifndef _LIBCPP_CXX03_LANG + template <bool _Dummy = true, + class = typename enable_if< + __dependent_type<is_default_constructible<_T1>, _Dummy>::value && + __dependent_type<is_default_constructible<_T2>, _Dummy>::value + >::type + > + _LIBCPP_INLINE_VISIBILITY + constexpr __compressed_pair() {} + + template <class _Tp, typename enable_if<!is_same<typename decay<_Tp>::type, + __compressed_pair>::value, + bool>::type = true> + _LIBCPP_INLINE_VISIBILITY constexpr explicit + __compressed_pair(_Tp&& __t) + : _Base1(std::forward<_Tp>(__t)), _Base2() {} + + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY constexpr + __compressed_pair(__second_tag, _Tp&& __t) + : _Base1(), _Base2(std::forward<_Tp>(__t)) {} + + template <class _U1, class _U2> + _LIBCPP_INLINE_VISIBILITY constexpr + __compressed_pair(_U1&& __t1, _U2&& __t2) + : _Base1(std::forward<_U1>(__t1)), _Base2(std::forward<_U2>(__t2)) {} + + template <class... _Args1, class... _Args2> + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 + __compressed_pair(piecewise_construct_t __pc, tuple<_Args1...> __first_args, + tuple<_Args2...> __second_args) + : _Base1(__pc, _VSTD::move(__first_args), + typename __make_tuple_indices<sizeof...(_Args1)>::type()), + _Base2(__pc, _VSTD::move(__second_args), + typename __make_tuple_indices<sizeof...(_Args2)>::type()) {} + +#else + _LIBCPP_INLINE_VISIBILITY + __compressed_pair() {} + + _LIBCPP_INLINE_VISIBILITY explicit + __compressed_pair(_T1 __t1) : _Base1(_VSTD::forward<_T1>(__t1)) {} + + _LIBCPP_INLINE_VISIBILITY + __compressed_pair(__second_tag, _T2 __t2) + : _Base1(), _Base2(_VSTD::forward<_T2>(__t2)) {} + + _LIBCPP_INLINE_VISIBILITY + __compressed_pair(_T1 __t1, _T2 __t2) + : _Base1(_VSTD::forward<_T1>(__t1)), _Base2(_VSTD::forward<_T2>(__t2)) {} +#endif + + _LIBCPP_INLINE_VISIBILITY + typename _Base1::reference first() _NOEXCEPT { + return static_cast<_Base1&>(*this).__get(); + } + + _LIBCPP_INLINE_VISIBILITY + typename _Base1::const_reference first() const _NOEXCEPT { + return static_cast<_Base1 const&>(*this).__get(); + } + + _LIBCPP_INLINE_VISIBILITY + typename _Base2::reference second() _NOEXCEPT { + return static_cast<_Base2&>(*this).__get(); + } + + _LIBCPP_INLINE_VISIBILITY + typename _Base2::const_reference second() const _NOEXCEPT { + return static_cast<_Base2 const&>(*this).__get(); + } + + _LIBCPP_INLINE_VISIBILITY + void swap(__compressed_pair& __x) + _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && + __is_nothrow_swappable<_T2>::value) + { + using std::swap; + swap(first(), __x.first()); + swap(second(), __x.second()); + } +}; + +template <class _T1, class _T2> +inline _LIBCPP_INLINE_VISIBILITY +void swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y) + _NOEXCEPT_(__is_nothrow_swappable<_T1>::value && + __is_nothrow_swappable<_T2>::value) { + __x.swap(__y); +} + +// default_delete + +template <class _Tp> +struct _LIBCPP_TEMPLATE_VIS default_delete { + static_assert(!is_function<_Tp>::value, + "default_delete cannot be instantiated for function types"); +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY constexpr default_delete() noexcept = default; +#else + _LIBCPP_INLINE_VISIBILITY default_delete() {} +#endif + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + default_delete(const default_delete<_Up>&, + typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = + 0) _NOEXCEPT {} + + _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __ptr) const _NOEXCEPT { + static_assert(sizeof(_Tp) > 0, + "default_delete can not delete incomplete type"); + static_assert(!is_void<_Tp>::value, + "default_delete can not delete incomplete type"); + delete __ptr; + } +}; + +template <class _Tp> +struct _LIBCPP_TEMPLATE_VIS default_delete<_Tp[]> { +private: + template <class _Up> + struct _EnableIfConvertible + : enable_if<is_convertible<_Up(*)[], _Tp(*)[]>::value> {}; + +public: +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY constexpr default_delete() noexcept = default; +#else + _LIBCPP_INLINE_VISIBILITY default_delete() {} +#endif + + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + default_delete(const default_delete<_Up[]>&, + typename _EnableIfConvertible<_Up>::type* = 0) _NOEXCEPT {} + + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + typename _EnableIfConvertible<_Up>::type + operator()(_Up* __ptr) const _NOEXCEPT { + static_assert(sizeof(_Tp) > 0, + "default_delete can not delete incomplete type"); + static_assert(!is_void<_Tp>::value, + "default_delete can not delete void type"); + delete[] __ptr; + } +}; + + + +#ifndef _LIBCPP_CXX03_LANG +template <class _Deleter> +struct __unique_ptr_deleter_sfinae { + static_assert(!is_reference<_Deleter>::value, "incorrect specialization"); + typedef const _Deleter& __lval_ref_type; + typedef _Deleter&& __good_rval_ref_type; + typedef true_type __enable_rval_overload; +}; + +template <class _Deleter> +struct __unique_ptr_deleter_sfinae<_Deleter const&> { + typedef const _Deleter& __lval_ref_type; + typedef const _Deleter&& __bad_rval_ref_type; + typedef false_type __enable_rval_overload; +}; + +template <class _Deleter> +struct __unique_ptr_deleter_sfinae<_Deleter&> { + typedef _Deleter& __lval_ref_type; + typedef _Deleter&& __bad_rval_ref_type; + typedef false_type __enable_rval_overload; +}; +#endif // !defined(_LIBCPP_CXX03_LANG) + +template <class _Tp, class _Dp = default_delete<_Tp> > +class _LIBCPP_TEMPLATE_VIS unique_ptr { +public: + typedef _Tp element_type; + typedef _Dp deleter_type; + typedef typename __pointer_type<_Tp, deleter_type>::type pointer; + + static_assert(!is_rvalue_reference<deleter_type>::value, + "the specified deleter type cannot be an rvalue reference"); + +private: + __compressed_pair<pointer, deleter_type> __ptr_; + + struct __nat { int __for_bool_; }; + +#ifndef _LIBCPP_CXX03_LANG + typedef __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE; + + template <bool _Dummy> + using _LValRefType = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type; + + template <bool _Dummy> + using _GoodRValRefType = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type; + + template <bool _Dummy> + using _BadRValRefType = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type; + + template <bool _Dummy, class _Deleter = typename __dependent_type< + __identity<deleter_type>, _Dummy>::type> + using _EnableIfDeleterDefaultConstructible = + typename enable_if<is_default_constructible<_Deleter>::value && + !is_pointer<_Deleter>::value>::type; + + template <class _ArgType> + using _EnableIfDeleterConstructible = + typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type; + + template <class _UPtr, class _Up> + using _EnableIfMoveConvertible = typename enable_if< + is_convertible<typename _UPtr::pointer, pointer>::value && + !is_array<_Up>::value + >::type; + + template <class _UDel> + using _EnableIfDeleterConvertible = typename enable_if< + (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) || + (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value) + >::type; + + template <class _UDel> + using _EnableIfDeleterAssignable = typename enable_if< + is_assignable<_Dp&, _UDel&&>::value + >::type; + +public: + template <bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy>> + _LIBCPP_INLINE_VISIBILITY + constexpr unique_ptr() noexcept : __ptr_(pointer()) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy>> + _LIBCPP_INLINE_VISIBILITY + constexpr unique_ptr(nullptr_t) noexcept : __ptr_(pointer()) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy>> + _LIBCPP_INLINE_VISIBILITY + explicit unique_ptr(pointer __p) noexcept : __ptr_(__p) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterConstructible<_LValRefType<_Dummy>>> + _LIBCPP_INLINE_VISIBILITY + unique_ptr(pointer __p, _LValRefType<_Dummy> __d) noexcept + : __ptr_(__p, __d) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy>>> + _LIBCPP_INLINE_VISIBILITY + unique_ptr(pointer __p, _GoodRValRefType<_Dummy> __d) noexcept + : __ptr_(__p, _VSTD::move(__d)) { + static_assert(!is_reference<deleter_type>::value, + "rvalue deleter bound to reference"); + } + + template <bool _Dummy = true, + class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy>>> + _LIBCPP_INLINE_VISIBILITY + unique_ptr(pointer __p, _BadRValRefType<_Dummy> __d) = delete; + + _LIBCPP_INLINE_VISIBILITY + unique_ptr(unique_ptr&& __u) noexcept + : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) { + } + + template <class _Up, class _Ep, + class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, + class = _EnableIfDeleterConvertible<_Ep> + > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT + : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) {} + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + unique_ptr(auto_ptr<_Up>&& __p, + typename enable_if<is_convertible<_Up*, _Tp*>::value && + is_same<_Dp, default_delete<_Tp>>::value, + __nat>::type = __nat()) _NOEXCEPT + : __ptr_(__p.release()) {} +#endif + + _LIBCPP_INLINE_VISIBILITY + unique_ptr& operator=(unique_ptr&& __u) _NOEXCEPT { + reset(__u.release()); + __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); + return *this; + } + + template <class _Up, class _Ep, + class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, + class = _EnableIfDeleterAssignable<_Ep> + > + _LIBCPP_INLINE_VISIBILITY + unique_ptr& operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT { + reset(__u.release()); + __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); + return *this; + } + +#else // _LIBCPP_CXX03_LANG +private: + unique_ptr(unique_ptr&); + template <class _Up, class _Ep> unique_ptr(unique_ptr<_Up, _Ep>&); + + unique_ptr& operator=(unique_ptr&); + template <class _Up, class _Ep> unique_ptr& operator=(unique_ptr<_Up, _Ep>&); + +public: + _LIBCPP_INLINE_VISIBILITY + unique_ptr() : __ptr_(pointer()) + { + static_assert(!is_pointer<deleter_type>::value, + "unique_ptr constructed with null function pointer deleter"); + static_assert(is_default_constructible<deleter_type>::value, + "unique_ptr::deleter_type is not default constructible"); + } + _LIBCPP_INLINE_VISIBILITY + unique_ptr(nullptr_t) : __ptr_(pointer()) + { + static_assert(!is_pointer<deleter_type>::value, + "unique_ptr constructed with null function pointer deleter"); + } + _LIBCPP_INLINE_VISIBILITY + explicit unique_ptr(pointer __p) + : __ptr_(_VSTD::move(__p)) { + static_assert(!is_pointer<deleter_type>::value, + "unique_ptr constructed with null function pointer deleter"); + } + + _LIBCPP_INLINE_VISIBILITY + operator __rv<unique_ptr>() { + return __rv<unique_ptr>(*this); + } + + _LIBCPP_INLINE_VISIBILITY + unique_ptr(__rv<unique_ptr> __u) + : __ptr_(__u->release(), + _VSTD::forward<deleter_type>(__u->get_deleter())) {} + + template <class _Up, class _Ep> + _LIBCPP_INLINE_VISIBILITY + typename enable_if< + !is_array<_Up>::value && + is_convertible<typename unique_ptr<_Up, _Ep>::pointer, + pointer>::value && + is_assignable<deleter_type&, _Ep&>::value, + unique_ptr&>::type + operator=(unique_ptr<_Up, _Ep> __u) { + reset(__u.release()); + __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + unique_ptr(pointer __p, deleter_type __d) + : __ptr_(_VSTD::move(__p), _VSTD::move(__d)) {} +#endif // _LIBCPP_CXX03_LANG + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + typename enable_if<is_convertible<_Up*, _Tp*>::value && + is_same<_Dp, default_delete<_Tp> >::value, + unique_ptr&>::type + operator=(auto_ptr<_Up> __p) { + reset(__p.release()); + return *this; + } +#endif + + _LIBCPP_INLINE_VISIBILITY + ~unique_ptr() { reset(); } + + _LIBCPP_INLINE_VISIBILITY + unique_ptr& operator=(nullptr_t) _NOEXCEPT { + reset(); + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + typename add_lvalue_reference<_Tp>::type + operator*() const { + return *__ptr_.first(); + } + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const _NOEXCEPT { + return __ptr_.first(); + } + _LIBCPP_INLINE_VISIBILITY + pointer get() const _NOEXCEPT { + return __ptr_.first(); + } + _LIBCPP_INLINE_VISIBILITY + deleter_type& get_deleter() _NOEXCEPT { + return __ptr_.second(); + } + _LIBCPP_INLINE_VISIBILITY + const deleter_type& get_deleter() const _NOEXCEPT { + return __ptr_.second(); + } + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT { + return __ptr_.first() != nullptr; + } + + _LIBCPP_INLINE_VISIBILITY + pointer release() _NOEXCEPT { + pointer __t = __ptr_.first(); + __ptr_.first() = pointer(); + return __t; + } + + _LIBCPP_INLINE_VISIBILITY + void reset(pointer __p = pointer()) _NOEXCEPT { + pointer __tmp = __ptr_.first(); + __ptr_.first() = __p; + if (__tmp) + __ptr_.second()(__tmp); + } + + _LIBCPP_INLINE_VISIBILITY + void swap(unique_ptr& __u) _NOEXCEPT { + __ptr_.swap(__u.__ptr_); + } +}; + + +template <class _Tp, class _Dp> +class _LIBCPP_TEMPLATE_VIS unique_ptr<_Tp[], _Dp> { +public: + typedef _Tp element_type; + typedef _Dp deleter_type; + typedef typename __pointer_type<_Tp, deleter_type>::type pointer; + +private: + __compressed_pair<pointer, deleter_type> __ptr_; + + template <class _From> + struct _CheckArrayPointerConversion : is_same<_From, pointer> {}; + + template <class _FromElem> + struct _CheckArrayPointerConversion<_FromElem*> + : integral_constant<bool, + is_same<_FromElem*, pointer>::value || + (is_same<pointer, element_type*>::value && + is_convertible<_FromElem(*)[], element_type(*)[]>::value) + > + {}; + +#ifndef _LIBCPP_CXX03_LANG + typedef __unique_ptr_deleter_sfinae<_Dp> _DeleterSFINAE; + + template <bool _Dummy> + using _LValRefType = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__lval_ref_type; + + template <bool _Dummy> + using _GoodRValRefType = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__good_rval_ref_type; + + template <bool _Dummy> + using _BadRValRefType = + typename __dependent_type<_DeleterSFINAE, _Dummy>::__bad_rval_ref_type; + + template <bool _Dummy, class _Deleter = typename __dependent_type< + __identity<deleter_type>, _Dummy>::type> + using _EnableIfDeleterDefaultConstructible = + typename enable_if<is_default_constructible<_Deleter>::value && + !is_pointer<_Deleter>::value>::type; + + template <class _ArgType> + using _EnableIfDeleterConstructible = + typename enable_if<is_constructible<deleter_type, _ArgType>::value>::type; + + template <class _Pp> + using _EnableIfPointerConvertible = typename enable_if< + _CheckArrayPointerConversion<_Pp>::value + >::type; + + template <class _UPtr, class _Up, + class _ElemT = typename _UPtr::element_type> + using _EnableIfMoveConvertible = typename enable_if< + is_array<_Up>::value && + is_same<pointer, element_type*>::value && + is_same<typename _UPtr::pointer, _ElemT*>::value && + is_convertible<_ElemT(*)[], element_type(*)[]>::value + >::type; + + template <class _UDel> + using _EnableIfDeleterConvertible = typename enable_if< + (is_reference<_Dp>::value && is_same<_Dp, _UDel>::value) || + (!is_reference<_Dp>::value && is_convertible<_UDel, _Dp>::value) + >::type; + + template <class _UDel> + using _EnableIfDeleterAssignable = typename enable_if< + is_assignable<_Dp&, _UDel&&>::value + >::type; + +public: + template <bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy>> + _LIBCPP_INLINE_VISIBILITY + constexpr unique_ptr() noexcept : __ptr_(pointer()) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy>> + _LIBCPP_INLINE_VISIBILITY + constexpr unique_ptr(nullptr_t) noexcept : __ptr_(pointer()) {} + + template <class _Pp, bool _Dummy = true, + class = _EnableIfDeleterDefaultConstructible<_Dummy>, + class = _EnableIfPointerConvertible<_Pp>> + _LIBCPP_INLINE_VISIBILITY + explicit unique_ptr(_Pp __p) noexcept + : __ptr_(__p) {} + + template <class _Pp, bool _Dummy = true, + class = _EnableIfDeleterConstructible<_LValRefType<_Dummy>>, + class = _EnableIfPointerConvertible<_Pp>> + _LIBCPP_INLINE_VISIBILITY + unique_ptr(_Pp __p, _LValRefType<_Dummy> __d) noexcept + : __ptr_(__p, __d) {} + + template <bool _Dummy = true, + class = _EnableIfDeleterConstructible<_LValRefType<_Dummy>>> + _LIBCPP_INLINE_VISIBILITY + unique_ptr(nullptr_t, _LValRefType<_Dummy> __d) noexcept + : __ptr_(nullptr, __d) {} + + template <class _Pp, bool _Dummy = true, + class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy>>, + class = _EnableIfPointerConvertible<_Pp>> + _LIBCPP_INLINE_VISIBILITY + unique_ptr(_Pp __p, _GoodRValRefType<_Dummy> __d) noexcept + : __ptr_(__p, _VSTD::move(__d)) { + static_assert(!is_reference<deleter_type>::value, + "rvalue deleter bound to reference"); + } + + template <bool _Dummy = true, + class = _EnableIfDeleterConstructible<_GoodRValRefType<_Dummy>>> + _LIBCPP_INLINE_VISIBILITY + unique_ptr(nullptr_t, _GoodRValRefType<_Dummy> __d) noexcept + : __ptr_(nullptr, _VSTD::move(__d)) { + static_assert(!is_reference<deleter_type>::value, + "rvalue deleter bound to reference"); + } + + template <class _Pp, bool _Dummy = true, + class = _EnableIfDeleterConstructible<_BadRValRefType<_Dummy>>, + class = _EnableIfPointerConvertible<_Pp>> + _LIBCPP_INLINE_VISIBILITY + unique_ptr(_Pp __p, _BadRValRefType<_Dummy> __d) = delete; + + _LIBCPP_INLINE_VISIBILITY + unique_ptr(unique_ptr&& __u) noexcept + : __ptr_(__u.release(), _VSTD::forward<deleter_type>(__u.get_deleter())) { + } + + _LIBCPP_INLINE_VISIBILITY + unique_ptr& operator=(unique_ptr&& __u) noexcept { + reset(__u.release()); + __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter()); + return *this; + } + + template <class _Up, class _Ep, + class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, + class = _EnableIfDeleterConvertible<_Ep> + > + _LIBCPP_INLINE_VISIBILITY + unique_ptr(unique_ptr<_Up, _Ep>&& __u) noexcept + : __ptr_(__u.release(), _VSTD::forward<_Ep>(__u.get_deleter())) { + } + + template <class _Up, class _Ep, + class = _EnableIfMoveConvertible<unique_ptr<_Up, _Ep>, _Up>, + class = _EnableIfDeleterAssignable<_Ep> + > + _LIBCPP_INLINE_VISIBILITY + unique_ptr& + operator=(unique_ptr<_Up, _Ep>&& __u) noexcept { + reset(__u.release()); + __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter()); + return *this; + } + +#else // _LIBCPP_CXX03_LANG +private: + template <class _Up> explicit unique_ptr(_Up); + + unique_ptr(unique_ptr&); + template <class _Up> unique_ptr(unique_ptr<_Up>&); + + unique_ptr& operator=(unique_ptr&); + template <class _Up> unique_ptr& operator=(unique_ptr<_Up>&); + + template <class _Up> + unique_ptr(_Up __u, + typename conditional< + is_reference<deleter_type>::value, deleter_type, + typename add_lvalue_reference<const deleter_type>::type>::type, + typename enable_if<is_convertible<_Up, pointer>::value, + __nat>::type = __nat()); +public: + _LIBCPP_INLINE_VISIBILITY + unique_ptr() : __ptr_(pointer()) { + static_assert(!is_pointer<deleter_type>::value, + "unique_ptr constructed with null function pointer deleter"); + } + _LIBCPP_INLINE_VISIBILITY + unique_ptr(nullptr_t) : __ptr_(pointer()) { + static_assert(!is_pointer<deleter_type>::value, + "unique_ptr constructed with null function pointer deleter"); + } + + _LIBCPP_INLINE_VISIBILITY + explicit unique_ptr(pointer __p) : __ptr_(__p) { + static_assert(!is_pointer<deleter_type>::value, + "unique_ptr constructed with null function pointer deleter"); + } + + _LIBCPP_INLINE_VISIBILITY + unique_ptr(pointer __p, deleter_type __d) + : __ptr_(__p, _VSTD::forward<deleter_type>(__d)) {} + + _LIBCPP_INLINE_VISIBILITY + unique_ptr(nullptr_t, deleter_type __d) + : __ptr_(pointer(), _VSTD::forward<deleter_type>(__d)) {} + + _LIBCPP_INLINE_VISIBILITY + operator __rv<unique_ptr>() { + return __rv<unique_ptr>(*this); + } + + _LIBCPP_INLINE_VISIBILITY + unique_ptr(__rv<unique_ptr> __u) + : __ptr_(__u->release(), + _VSTD::forward<deleter_type>(__u->get_deleter())) {} + + _LIBCPP_INLINE_VISIBILITY + unique_ptr& operator=(__rv<unique_ptr> __u) { + reset(__u->release()); + __ptr_.second() = _VSTD::forward<deleter_type>(__u->get_deleter()); + return *this; + } + +#endif // _LIBCPP_CXX03_LANG + +public: + _LIBCPP_INLINE_VISIBILITY + ~unique_ptr() { reset(); } + + _LIBCPP_INLINE_VISIBILITY + unique_ptr& operator=(nullptr_t) _NOEXCEPT { + reset(); + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + typename add_lvalue_reference<_Tp>::type + operator[](size_t __i) const { + return __ptr_.first()[__i]; + } + _LIBCPP_INLINE_VISIBILITY + pointer get() const _NOEXCEPT { + return __ptr_.first(); + } + + _LIBCPP_INLINE_VISIBILITY + deleter_type& get_deleter() _NOEXCEPT { + return __ptr_.second(); + } + + _LIBCPP_INLINE_VISIBILITY + const deleter_type& get_deleter() const _NOEXCEPT { + return __ptr_.second(); + } + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT { + return __ptr_.first() != nullptr; + } + + _LIBCPP_INLINE_VISIBILITY + pointer release() _NOEXCEPT { + pointer __t = __ptr_.first(); + __ptr_.first() = pointer(); + return __t; + } + + template <class _Pp> + _LIBCPP_INLINE_VISIBILITY + typename enable_if< + _CheckArrayPointerConversion<_Pp>::value + >::type + reset(_Pp __p) _NOEXCEPT { + pointer __tmp = __ptr_.first(); + __ptr_.first() = __p; + if (__tmp) + __ptr_.second()(__tmp); + } + + _LIBCPP_INLINE_VISIBILITY + void reset(nullptr_t = nullptr) _NOEXCEPT { + pointer __tmp = __ptr_.first(); + __ptr_.first() = nullptr; + if (__tmp) + __ptr_.second()(__tmp); + } + + _LIBCPP_INLINE_VISIBILITY + void swap(unique_ptr& __u) _NOEXCEPT { + __ptr_.swap(__u.__ptr_); + } + +}; + +template <class _Tp, class _Dp> +inline _LIBCPP_INLINE_VISIBILITY +typename enable_if< + __is_swappable<_Dp>::value, + void +>::type +swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) _NOEXCEPT {__x.swap(__y);} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) +{ + typedef typename unique_ptr<_T1, _D1>::pointer _P1; + typedef typename unique_ptr<_T2, _D2>::pointer _P2; + typedef typename common_type<_P1, _P2>::type _Vp; + return less<_Vp>()(__x.get(), __y.get()); +} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} + +template <class _T1, class _D1, class _T2, class _D2> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT +{ + return !__x; +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT +{ + return !__x; +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(const unique_ptr<_T1, _D1>& __x, nullptr_t) _NOEXCEPT +{ + return static_cast<bool>(__x); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(nullptr_t, const unique_ptr<_T1, _D1>& __x) _NOEXCEPT +{ + return static_cast<bool>(__x); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<(const unique_ptr<_T1, _D1>& __x, nullptr_t) +{ + typedef typename unique_ptr<_T1, _D1>::pointer _P1; + return less<_P1>()(__x.get(), nullptr); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<(nullptr_t, const unique_ptr<_T1, _D1>& __x) +{ + typedef typename unique_ptr<_T1, _D1>::pointer _P1; + return less<_P1>()(nullptr, __x.get()); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>(const unique_ptr<_T1, _D1>& __x, nullptr_t) +{ + return nullptr < __x; +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>(nullptr_t, const unique_ptr<_T1, _D1>& __x) +{ + return __x < nullptr; +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<=(const unique_ptr<_T1, _D1>& __x, nullptr_t) +{ + return !(nullptr < __x); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<=(nullptr_t, const unique_ptr<_T1, _D1>& __x) +{ + return !(__x < nullptr); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>=(const unique_ptr<_T1, _D1>& __x, nullptr_t) +{ + return !(__x < nullptr); +} + +template <class _T1, class _D1> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>=(nullptr_t, const unique_ptr<_T1, _D1>& __x) +{ + return !(nullptr < __x); +} + +#ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template <class _Tp, class _Dp> +inline _LIBCPP_INLINE_VISIBILITY +unique_ptr<_Tp, _Dp> +move(unique_ptr<_Tp, _Dp>& __t) +{ + return unique_ptr<_Tp, _Dp>(__rv<unique_ptr<_Tp, _Dp> >(__t)); +} + +#endif + +#if _LIBCPP_STD_VER > 11 + +template<class _Tp> +struct __unique_if +{ + typedef unique_ptr<_Tp> __unique_single; +}; + +template<class _Tp> +struct __unique_if<_Tp[]> +{ + typedef unique_ptr<_Tp[]> __unique_array_unknown_bound; +}; + +template<class _Tp, size_t _Np> +struct __unique_if<_Tp[_Np]> +{ + typedef void __unique_array_known_bound; +}; + +template<class _Tp, class... _Args> +inline _LIBCPP_INLINE_VISIBILITY +typename __unique_if<_Tp>::__unique_single +make_unique(_Args&&... __args) +{ + return unique_ptr<_Tp>(new _Tp(_VSTD::forward<_Args>(__args)...)); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +typename __unique_if<_Tp>::__unique_array_unknown_bound +make_unique(size_t __n) +{ + typedef typename remove_extent<_Tp>::type _Up; + return unique_ptr<_Tp>(new _Up[__n]()); +} + +template<class _Tp, class... _Args> + typename __unique_if<_Tp>::__unique_array_known_bound + make_unique(_Args&&...) = delete; + +#endif // _LIBCPP_STD_VER > 11 + +template <class _Tp, class _Dp> +#ifdef _LIBCPP_CXX03_LANG +struct _LIBCPP_TEMPLATE_VIS hash<unique_ptr<_Tp, _Dp> > +#else +struct _LIBCPP_TEMPLATE_VIS hash<__enable_hash_helper< + unique_ptr<_Tp, _Dp>, typename unique_ptr<_Tp, _Dp>::pointer>> +#endif +{ + typedef unique_ptr<_Tp, _Dp> argument_type; + typedef size_t result_type; + _LIBCPP_INLINE_VISIBILITY + result_type operator()(const argument_type& __ptr) const + { + typedef typename argument_type::pointer pointer; + return hash<pointer>()(__ptr.get()); + } +}; + +struct __destruct_n +{ +private: + size_t __size_; + + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT + {for (size_t __i = 0; __i < __size_; ++__i, ++__p) __p->~_Tp();} + + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT + {} + + _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT + {++__size_;} + _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT + {} + + _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT + {__size_ = __s;} + _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT + {} +public: + _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT + : __size_(__s) {} + + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) _NOEXCEPT + {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} + + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT + {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} + + template <class _Tp> + _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT + {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} +}; + +template <class _Alloc> +class __allocator_destructor +{ + typedef allocator_traits<_Alloc> __alloc_traits; +public: + typedef typename __alloc_traits::pointer pointer; + typedef typename __alloc_traits::size_type size_type; +private: + _Alloc& __alloc_; + size_type __s_; +public: + _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) + _NOEXCEPT + : __alloc_(__a), __s_(__s) {} + _LIBCPP_INLINE_VISIBILITY + void operator()(pointer __p) _NOEXCEPT + {__alloc_traits::deallocate(__alloc_, __p, __s_);} +}; + +template <class _InputIterator, class _ForwardIterator> +_ForwardIterator +uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) +{ + typedef typename iterator_traits<_ForwardIterator>::value_type value_type; +#ifndef _LIBCPP_NO_EXCEPTIONS + _ForwardIterator __s = __r; + try + { +#endif + for (; __f != __l; ++__f, (void) ++__r) + ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + for (; __s != __r; ++__s) + __s->~value_type(); + throw; + } +#endif + return __r; +} + +template <class _InputIterator, class _Size, class _ForwardIterator> +_ForwardIterator +uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) +{ + typedef typename iterator_traits<_ForwardIterator>::value_type value_type; +#ifndef _LIBCPP_NO_EXCEPTIONS + _ForwardIterator __s = __r; + try + { +#endif + for (; __n > 0; ++__f, (void) ++__r, (void) --__n) + ::new (static_cast<void*>(_VSTD::addressof(*__r))) value_type(*__f); +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + for (; __s != __r; ++__s) + __s->~value_type(); + throw; + } +#endif + return __r; +} + +template <class _ForwardIterator, class _Tp> +void +uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) +{ + typedef typename iterator_traits<_ForwardIterator>::value_type value_type; +#ifndef _LIBCPP_NO_EXCEPTIONS + _ForwardIterator __s = __f; + try + { +#endif + for (; __f != __l; ++__f) + ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + for (; __s != __f; ++__s) + __s->~value_type(); + throw; + } +#endif +} + +template <class _ForwardIterator, class _Size, class _Tp> +_ForwardIterator +uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) +{ + typedef typename iterator_traits<_ForwardIterator>::value_type value_type; +#ifndef _LIBCPP_NO_EXCEPTIONS + _ForwardIterator __s = __f; + try + { +#endif + for (; __n > 0; ++__f, (void) --__n) + ::new (static_cast<void*>(_VSTD::addressof(*__f))) value_type(__x); +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + for (; __s != __f; ++__s) + __s->~value_type(); + throw; + } +#endif + return __f; +} + +#if _LIBCPP_STD_VER > 14 + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +void destroy_at(_Tp* __loc) { + _LIBCPP_ASSERT(__loc, "null pointer given to destroy_at"); + __loc->~_Tp(); +} + +template <class _ForwardIterator> +inline _LIBCPP_INLINE_VISIBILITY +void destroy(_ForwardIterator __first, _ForwardIterator __last) { + for (; __first != __last; ++__first) + _VSTD::destroy_at(_VSTD::addressof(*__first)); +} + +template <class _ForwardIterator, class _Size> +inline _LIBCPP_INLINE_VISIBILITY +_ForwardIterator destroy_n(_ForwardIterator __first, _Size __n) { + for (; __n > 0; (void)++__first, --__n) + _VSTD::destroy_at(_VSTD::addressof(*__first)); + return __first; +} + +template <class _ForwardIterator> +inline _LIBCPP_INLINE_VISIBILITY +void uninitialized_default_construct(_ForwardIterator __first, _ForwardIterator __last) { + using _Vt = typename iterator_traits<_ForwardIterator>::value_type; + auto __idx = __first; +#ifndef _LIBCPP_NO_EXCEPTIONS + try { +#endif + for (; __idx != __last; ++__idx) + ::new((void*)_VSTD::addressof(*__idx)) _Vt; +#ifndef _LIBCPP_NO_EXCEPTIONS + } catch (...) { + _VSTD::destroy(__first, __idx); + throw; + } +#endif +} + +template <class _ForwardIterator, class _Size> +inline _LIBCPP_INLINE_VISIBILITY +_ForwardIterator uninitialized_default_construct_n(_ForwardIterator __first, _Size __n) { + using _Vt = typename iterator_traits<_ForwardIterator>::value_type; + auto __idx = __first; +#ifndef _LIBCPP_NO_EXCEPTIONS + try { +#endif + for (; __n > 0; (void)++__idx, --__n) + ::new((void*)_VSTD::addressof(*__idx)) _Vt; + return __idx; +#ifndef _LIBCPP_NO_EXCEPTIONS + } catch (...) { + _VSTD::destroy(__first, __idx); + throw; + } +#endif +} + + +template <class _ForwardIterator> +inline _LIBCPP_INLINE_VISIBILITY +void uninitialized_value_construct(_ForwardIterator __first, _ForwardIterator __last) { + using _Vt = typename iterator_traits<_ForwardIterator>::value_type; + auto __idx = __first; +#ifndef _LIBCPP_NO_EXCEPTIONS + try { +#endif + for (; __idx != __last; ++__idx) + ::new((void*)_VSTD::addressof(*__idx)) _Vt(); +#ifndef _LIBCPP_NO_EXCEPTIONS + } catch (...) { + _VSTD::destroy(__first, __idx); + throw; + } +#endif +} + +template <class _ForwardIterator, class _Size> +inline _LIBCPP_INLINE_VISIBILITY +_ForwardIterator uninitialized_value_construct_n(_ForwardIterator __first, _Size __n) { + using _Vt = typename iterator_traits<_ForwardIterator>::value_type; + auto __idx = __first; +#ifndef _LIBCPP_NO_EXCEPTIONS + try { +#endif + for (; __n > 0; (void)++__idx, --__n) + ::new((void*)_VSTD::addressof(*__idx)) _Vt(); + return __idx; +#ifndef _LIBCPP_NO_EXCEPTIONS + } catch (...) { + _VSTD::destroy(__first, __idx); + throw; + } +#endif +} + + +template <class _InputIt, class _ForwardIt> +inline _LIBCPP_INLINE_VISIBILITY +_ForwardIt uninitialized_move(_InputIt __first, _InputIt __last, _ForwardIt __first_res) { + using _Vt = typename iterator_traits<_ForwardIt>::value_type; + auto __idx = __first_res; +#ifndef _LIBCPP_NO_EXCEPTIONS + try { +#endif + for (; __first != __last; (void)++__idx, ++__first) + ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first)); + return __idx; +#ifndef _LIBCPP_NO_EXCEPTIONS + } catch (...) { + _VSTD::destroy(__first_res, __idx); + throw; + } +#endif +} + +template <class _InputIt, class _Size, class _ForwardIt> +inline _LIBCPP_INLINE_VISIBILITY +pair<_InputIt, _ForwardIt> +uninitialized_move_n(_InputIt __first, _Size __n, _ForwardIt __first_res) { + using _Vt = typename iterator_traits<_ForwardIt>::value_type; + auto __idx = __first_res; +#ifndef _LIBCPP_NO_EXCEPTIONS + try { +#endif + for (; __n > 0; ++__idx, (void)++__first, --__n) + ::new((void*)_VSTD::addressof(*__idx)) _Vt(std::move(*__first)); + return {__first, __idx}; +#ifndef _LIBCPP_NO_EXCEPTIONS + } catch (...) { + _VSTD::destroy(__first_res, __idx); + throw; + } +#endif +} + + +#endif // _LIBCPP_STD_VER > 14 + +// NOTE: Relaxed and acq/rel atomics (for increment and decrement respectively) +// should be sufficient for thread safety. +// See https://bugs.llvm.org/show_bug.cgi?id=22803 +#if defined(__clang__) && __has_builtin(__atomic_add_fetch) \ + && defined(__ATOMIC_RELAXED) \ + && defined(__ATOMIC_ACQ_REL) +# define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT +#elif !defined(__clang__) && defined(_GNUC_VER) && _GNUC_VER >= 407 +# define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT +#endif + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY _Tp +__libcpp_atomic_refcount_increment(_Tp& __t) _NOEXCEPT +{ +#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS) + return __atomic_add_fetch(&__t, 1, __ATOMIC_RELAXED); +#else + return __t += 1; +#endif +} + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY _Tp +__libcpp_atomic_refcount_decrement(_Tp& __t) _NOEXCEPT +{ +#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS) + return __atomic_add_fetch(&__t, -1, __ATOMIC_ACQ_REL); +#else + return __t -= 1; +#endif +} + +class _LIBCPP_EXCEPTION_ABI bad_weak_ptr + : public std::exception +{ +public: + virtual ~bad_weak_ptr() _NOEXCEPT; + virtual const char* what() const _NOEXCEPT; +}; + +_LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINE +void __throw_bad_weak_ptr() +{ +#ifndef _LIBCPP_NO_EXCEPTIONS + throw bad_weak_ptr(); +#else + _VSTD::abort(); +#endif +} + +template<class _Tp> class _LIBCPP_TEMPLATE_VIS weak_ptr; + +class _LIBCPP_TYPE_VIS __shared_count +{ + __shared_count(const __shared_count&); + __shared_count& operator=(const __shared_count&); + +protected: + long __shared_owners_; + virtual ~__shared_count(); +private: + virtual void __on_zero_shared() _NOEXCEPT = 0; + +public: + _LIBCPP_INLINE_VISIBILITY + explicit __shared_count(long __refs = 0) _NOEXCEPT + : __shared_owners_(__refs) {} + +#if defined(_LIBCPP_BUILDING_MEMORY) && \ + defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS) + void __add_shared() _NOEXCEPT; + bool __release_shared() _NOEXCEPT; +#else + _LIBCPP_INLINE_VISIBILITY + void __add_shared() _NOEXCEPT { + __libcpp_atomic_refcount_increment(__shared_owners_); + } + _LIBCPP_INLINE_VISIBILITY + bool __release_shared() _NOEXCEPT { + if (__libcpp_atomic_refcount_decrement(__shared_owners_) == -1) { + __on_zero_shared(); + return true; + } + return false; + } +#endif + _LIBCPP_INLINE_VISIBILITY + long use_count() const _NOEXCEPT { + return __libcpp_relaxed_load(&__shared_owners_) + 1; + } +}; + +class _LIBCPP_TYPE_VIS __shared_weak_count + : private __shared_count +{ + long __shared_weak_owners_; + +public: + _LIBCPP_INLINE_VISIBILITY + explicit __shared_weak_count(long __refs = 0) _NOEXCEPT + : __shared_count(__refs), + __shared_weak_owners_(__refs) {} +protected: + virtual ~__shared_weak_count(); + +public: +#if defined(_LIBCPP_BUILDING_MEMORY) && \ + defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS) + void __add_shared() _NOEXCEPT; + void __add_weak() _NOEXCEPT; + void __release_shared() _NOEXCEPT; +#else + _LIBCPP_INLINE_VISIBILITY + void __add_shared() _NOEXCEPT { + __shared_count::__add_shared(); + } + _LIBCPP_INLINE_VISIBILITY + void __add_weak() _NOEXCEPT { + __libcpp_atomic_refcount_increment(__shared_weak_owners_); + } + _LIBCPP_INLINE_VISIBILITY + void __release_shared() _NOEXCEPT { + if (__shared_count::__release_shared()) + __release_weak(); + } +#endif + void __release_weak() _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + long use_count() const _NOEXCEPT {return __shared_count::use_count();} + __shared_weak_count* lock() _NOEXCEPT; + + // Define the function out only if we build static libc++ without RTTI. + // Otherwise we may break clients who need to compile their projects with + // -fno-rtti and yet link against a libc++.dylib compiled + // without -fno-rtti. +#if !defined(_LIBCPP_NO_RTTI) || !defined(_LIBCPP_BUILD_STATIC) + virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; +#endif +private: + virtual void __on_zero_shared_weak() _NOEXCEPT = 0; +}; + +template <class _Tp, class _Dp, class _Alloc> +class __shared_ptr_pointer + : public __shared_weak_count +{ + __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; +public: + _LIBCPP_INLINE_VISIBILITY + __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) + : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {} + +#ifndef _LIBCPP_NO_RTTI + virtual const void* __get_deleter(const type_info&) const _NOEXCEPT; +#endif + +private: + virtual void __on_zero_shared() _NOEXCEPT; + virtual void __on_zero_shared_weak() _NOEXCEPT; +}; + +#ifndef _LIBCPP_NO_RTTI + +template <class _Tp, class _Dp, class _Alloc> +const void* +__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT +{ + return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : nullptr; +} + +#endif // _LIBCPP_NO_RTTI + +template <class _Tp, class _Dp, class _Alloc> +void +__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT +{ + __data_.first().second()(__data_.first().first()); + __data_.first().second().~_Dp(); +} + +template <class _Tp, class _Dp, class _Alloc> +void +__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT +{ + typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al; + typedef allocator_traits<_Al> _ATraits; + typedef pointer_traits<typename _ATraits::pointer> _PTraits; + + _Al __a(__data_.second()); + __data_.second().~_Alloc(); + __a.deallocate(_PTraits::pointer_to(*this), 1); +} + +template <class _Tp, class _Alloc> +class __shared_ptr_emplace + : public __shared_weak_count +{ + __compressed_pair<_Alloc, _Tp> __data_; +public: +#ifndef _LIBCPP_HAS_NO_VARIADICS + + _LIBCPP_INLINE_VISIBILITY + __shared_ptr_emplace(_Alloc __a) + : __data_(_VSTD::move(__a)) {} + + template <class ..._Args> + _LIBCPP_INLINE_VISIBILITY + __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) + : __data_(piecewise_construct, _VSTD::forward_as_tuple(__a), + _VSTD::forward_as_tuple(_VSTD::forward<_Args>(__args)...)) {} + +#else // _LIBCPP_HAS_NO_VARIADICS + + _LIBCPP_INLINE_VISIBILITY + __shared_ptr_emplace(_Alloc __a) + : __data_(__a) {} + + template <class _A0> + _LIBCPP_INLINE_VISIBILITY + __shared_ptr_emplace(_Alloc __a, _A0& __a0) + : __data_(__a, _Tp(__a0)) {} + + template <class _A0, class _A1> + _LIBCPP_INLINE_VISIBILITY + __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) + : __data_(__a, _Tp(__a0, __a1)) {} + + template <class _A0, class _A1, class _A2> + _LIBCPP_INLINE_VISIBILITY + __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) + : __data_(__a, _Tp(__a0, __a1, __a2)) {} + +#endif // _LIBCPP_HAS_NO_VARIADICS + +private: + virtual void __on_zero_shared() _NOEXCEPT; + virtual void __on_zero_shared_weak() _NOEXCEPT; +public: + _LIBCPP_INLINE_VISIBILITY + _Tp* get() _NOEXCEPT {return &__data_.second();} +}; + +template <class _Tp, class _Alloc> +void +__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() _NOEXCEPT +{ + __data_.second().~_Tp(); +} + +template <class _Tp, class _Alloc> +void +__shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT +{ + typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type _Al; + typedef allocator_traits<_Al> _ATraits; + typedef pointer_traits<typename _ATraits::pointer> _PTraits; + _Al __a(__data_.first()); + __data_.first().~_Alloc(); + __a.deallocate(_PTraits::pointer_to(*this), 1); +} + +struct __shared_ptr_dummy_rebind_allocator_type; +template <> +class _LIBCPP_TEMPLATE_VIS allocator<__shared_ptr_dummy_rebind_allocator_type> +{ +public: + template <class _Other> + struct rebind + { + typedef allocator<_Other> other; + }; +}; + +template<class _Tp> class _LIBCPP_TEMPLATE_VIS enable_shared_from_this; + +template<class _Tp> +class _LIBCPP_TEMPLATE_VIS shared_ptr +{ +public: + typedef _Tp element_type; + +#if _LIBCPP_STD_VER > 14 + typedef weak_ptr<_Tp> weak_type; +#endif +private: + element_type* __ptr_; + __shared_weak_count* __cntrl_; + + struct __nat {int __for_bool_;}; +public: + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT; + template<class _Yp> + explicit shared_ptr(_Yp* __p, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); + template<class _Yp, class _Dp> + shared_ptr(_Yp* __p, _Dp __d, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); + template<class _Yp, class _Dp, class _Alloc> + shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); + template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); + template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); + template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + shared_ptr(const shared_ptr& __r) _NOEXCEPT; + template<class _Yp> + _LIBCPP_INLINE_VISIBILITY + shared_ptr(const shared_ptr<_Yp>& __r, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()) + _NOEXCEPT; +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + _LIBCPP_INLINE_VISIBILITY + shared_ptr(shared_ptr&& __r) _NOEXCEPT; + template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(shared_ptr<_Yp>&& __r, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()) + _NOEXCEPT; +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type= __nat()); +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + template<class _Yp> + shared_ptr(auto_ptr<_Yp>&& __r, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); +#else + template<class _Yp> + shared_ptr(auto_ptr<_Yp> __r, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat()); +#endif +#endif +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + template <class _Yp, class _Dp> + shared_ptr(unique_ptr<_Yp, _Dp>&&, + typename enable_if + < + !is_lvalue_reference<_Dp>::value && + !is_array<_Yp>::value && + is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, + __nat + >::type = __nat()); + template <class _Yp, class _Dp> + shared_ptr(unique_ptr<_Yp, _Dp>&&, + typename enable_if + < + is_lvalue_reference<_Dp>::value && + !is_array<_Yp>::value && + is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, + __nat + >::type = __nat()); +#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES + template <class _Yp, class _Dp> + shared_ptr(unique_ptr<_Yp, _Dp>, + typename enable_if + < + !is_lvalue_reference<_Dp>::value && + !is_array<_Yp>::value && + is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, + __nat + >::type = __nat()); + template <class _Yp, class _Dp> + shared_ptr(unique_ptr<_Yp, _Dp>, + typename enable_if + < + is_lvalue_reference<_Dp>::value && + !is_array<_Yp>::value && + is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, + __nat + >::type = __nat()); +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + + ~shared_ptr(); + + _LIBCPP_INLINE_VISIBILITY + shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT; + template<class _Yp> + typename enable_if + < + is_convertible<_Yp*, element_type*>::value, + shared_ptr& + >::type + _LIBCPP_INLINE_VISIBILITY + operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT; +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + _LIBCPP_INLINE_VISIBILITY + shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT; + template<class _Yp> + typename enable_if + < + is_convertible<_Yp*, element_type*>::value, + shared_ptr<_Tp>& + >::type + _LIBCPP_INLINE_VISIBILITY + operator=(shared_ptr<_Yp>&& __r); +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) + template<class _Yp> + _LIBCPP_INLINE_VISIBILITY + typename enable_if + < + !is_array<_Yp>::value && + is_convertible<_Yp*, element_type*>::value, + shared_ptr + >::type& + operator=(auto_ptr<_Yp>&& __r); +#endif +#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) + template<class _Yp> + _LIBCPP_INLINE_VISIBILITY + typename enable_if + < + !is_array<_Yp>::value && + is_convertible<_Yp*, element_type*>::value, + shared_ptr& + >::type + operator=(auto_ptr<_Yp> __r); +#endif +#endif + template <class _Yp, class _Dp> + typename enable_if + < + !is_array<_Yp>::value && + is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, + shared_ptr& + >::type +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + _LIBCPP_INLINE_VISIBILITY + operator=(unique_ptr<_Yp, _Dp>&& __r); +#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES + _LIBCPP_INLINE_VISIBILITY + operator=(unique_ptr<_Yp, _Dp> __r); +#endif + + _LIBCPP_INLINE_VISIBILITY + void swap(shared_ptr& __r) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + void reset() _NOEXCEPT; + template<class _Yp> + typename enable_if + < + is_convertible<_Yp*, element_type*>::value, + void + >::type + _LIBCPP_INLINE_VISIBILITY + reset(_Yp* __p); + template<class _Yp, class _Dp> + typename enable_if + < + is_convertible<_Yp*, element_type*>::value, + void + >::type + _LIBCPP_INLINE_VISIBILITY + reset(_Yp* __p, _Dp __d); + template<class _Yp, class _Dp, class _Alloc> + typename enable_if + < + is_convertible<_Yp*, element_type*>::value, + void + >::type + _LIBCPP_INLINE_VISIBILITY + reset(_Yp* __p, _Dp __d, _Alloc __a); + + _LIBCPP_INLINE_VISIBILITY + element_type* get() const _NOEXCEPT {return __ptr_;} + _LIBCPP_INLINE_VISIBILITY + typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT + {return *__ptr_;} + _LIBCPP_INLINE_VISIBILITY + element_type* operator->() const _NOEXCEPT {return __ptr_;} + _LIBCPP_INLINE_VISIBILITY + long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;} + _LIBCPP_INLINE_VISIBILITY + bool unique() const _NOEXCEPT {return use_count() == 1;} + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != 0;} + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + bool owner_before(shared_ptr<_Up> const& __p) const _NOEXCEPT + {return __cntrl_ < __p.__cntrl_;} + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + bool owner_before(weak_ptr<_Up> const& __p) const _NOEXCEPT + {return __cntrl_ < __p.__cntrl_;} + _LIBCPP_INLINE_VISIBILITY + bool + __owner_equivalent(const shared_ptr& __p) const + {return __cntrl_ == __p.__cntrl_;} + +#ifndef _LIBCPP_NO_RTTI + template <class _Dp> + _LIBCPP_INLINE_VISIBILITY + _Dp* __get_deleter() const _NOEXCEPT + {return static_cast<_Dp*>(__cntrl_ + ? const_cast<void *>(__cntrl_->__get_deleter(typeid(_Dp))) + : nullptr);} +#endif // _LIBCPP_NO_RTTI + +#ifndef _LIBCPP_HAS_NO_VARIADICS + + template<class ..._Args> + static + shared_ptr<_Tp> + make_shared(_Args&& ...__args); + + template<class _Alloc, class ..._Args> + static + shared_ptr<_Tp> + allocate_shared(const _Alloc& __a, _Args&& ...__args); + +#else // _LIBCPP_HAS_NO_VARIADICS + + static shared_ptr<_Tp> make_shared(); + + template<class _A0> + static shared_ptr<_Tp> make_shared(_A0&); + + template<class _A0, class _A1> + static shared_ptr<_Tp> make_shared(_A0&, _A1&); + + template<class _A0, class _A1, class _A2> + static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); + + template<class _Alloc> + static shared_ptr<_Tp> + allocate_shared(const _Alloc& __a); + + template<class _Alloc, class _A0> + static shared_ptr<_Tp> + allocate_shared(const _Alloc& __a, _A0& __a0); + + template<class _Alloc, class _A0, class _A1> + static shared_ptr<_Tp> + allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); + + template<class _Alloc, class _A0, class _A1, class _A2> + static shared_ptr<_Tp> + allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); + +#endif // _LIBCPP_HAS_NO_VARIADICS + +private: + template <class _Yp, bool = is_function<_Yp>::value> + struct __shared_ptr_default_allocator + { + typedef allocator<_Yp> type; + }; + + template <class _Yp> + struct __shared_ptr_default_allocator<_Yp, true> + { + typedef allocator<__shared_ptr_dummy_rebind_allocator_type> type; + }; + + template <class _Yp, class _OrigPtr> + _LIBCPP_INLINE_VISIBILITY + typename enable_if<is_convertible<_OrigPtr*, + const enable_shared_from_this<_Yp>* + >::value, + void>::type + __enable_weak_this(const enable_shared_from_this<_Yp>* __e, + _OrigPtr* __ptr) _NOEXCEPT + { + typedef typename remove_cv<_Yp>::type _RawYp; + if (__e && __e->__weak_this_.expired()) + { + __e->__weak_this_ = shared_ptr<_RawYp>(*this, + const_cast<_RawYp*>(static_cast<const _Yp*>(__ptr))); + } + } + + _LIBCPP_INLINE_VISIBILITY void __enable_weak_this(...) _NOEXCEPT {} + + template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr; + template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr; +}; + + +template<class _Tp> +inline +_LIBCPP_CONSTEXPR +shared_ptr<_Tp>::shared_ptr() _NOEXCEPT + : __ptr_(0), + __cntrl_(0) +{ +} + +template<class _Tp> +inline +_LIBCPP_CONSTEXPR +shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT + : __ptr_(0), + __cntrl_(0) +{ +} + +template<class _Tp> +template<class _Yp> +shared_ptr<_Tp>::shared_ptr(_Yp* __p, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) + : __ptr_(__p) +{ + unique_ptr<_Yp> __hold(__p); + typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT; + typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, _AllocT > _CntrlBlk; + __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), _AllocT()); + __hold.release(); + __enable_weak_this(__p, __p); +} + +template<class _Tp> +template<class _Yp, class _Dp> +shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) + : __ptr_(__p) +{ +#ifndef _LIBCPP_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_NO_EXCEPTIONS + typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT; + typedef __shared_ptr_pointer<_Yp*, _Dp, _AllocT > _CntrlBlk; + __cntrl_ = new _CntrlBlk(__p, __d, _AllocT()); + __enable_weak_this(__p, __p); +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + __d(__p); + throw; + } +#endif // _LIBCPP_NO_EXCEPTIONS +} + +template<class _Tp> +template<class _Dp> +shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) + : __ptr_(0) +{ +#ifndef _LIBCPP_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_NO_EXCEPTIONS + typedef typename __shared_ptr_default_allocator<_Tp>::type _AllocT; + typedef __shared_ptr_pointer<nullptr_t, _Dp, _AllocT > _CntrlBlk; + __cntrl_ = new _CntrlBlk(__p, __d, _AllocT()); +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + __d(__p); + throw; + } +#endif // _LIBCPP_NO_EXCEPTIONS +} + +template<class _Tp> +template<class _Yp, class _Dp, class _Alloc> +shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) + : __ptr_(__p) +{ +#ifndef _LIBCPP_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_NO_EXCEPTIONS + typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; + typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; + typedef __allocator_destructor<_A2> _D2; + _A2 __a2(__a); + unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); + ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) + _CntrlBlk(__p, __d, __a); + __cntrl_ = _VSTD::addressof(*__hold2.release()); + __enable_weak_this(__p, __p); +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + __d(__p); + throw; + } +#endif // _LIBCPP_NO_EXCEPTIONS +} + +template<class _Tp> +template<class _Dp, class _Alloc> +shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) + : __ptr_(0) +{ +#ifndef _LIBCPP_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_NO_EXCEPTIONS + typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; + typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; + typedef __allocator_destructor<_A2> _D2; + _A2 __a2(__a); + unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); + ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) + _CntrlBlk(__p, __d, __a); + __cntrl_ = _VSTD::addressof(*__hold2.release()); +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + __d(__p); + throw; + } +#endif // _LIBCPP_NO_EXCEPTIONS +} + +template<class _Tp> +template<class _Yp> +inline +shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT + : __ptr_(__p), + __cntrl_(__r.__cntrl_) +{ + if (__cntrl_) + __cntrl_->__add_shared(); +} + +template<class _Tp> +inline +shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT + : __ptr_(__r.__ptr_), + __cntrl_(__r.__cntrl_) +{ + if (__cntrl_) + __cntrl_->__add_shared(); +} + +template<class _Tp> +template<class _Yp> +inline +shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) + _NOEXCEPT + : __ptr_(__r.__ptr_), + __cntrl_(__r.__cntrl_) +{ + if (__cntrl_) + __cntrl_->__add_shared(); +} + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template<class _Tp> +inline +shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT + : __ptr_(__r.__ptr_), + __cntrl_(__r.__cntrl_) +{ + __r.__ptr_ = 0; + __r.__cntrl_ = 0; +} + +template<class _Tp> +template<class _Yp> +inline +shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) + _NOEXCEPT + : __ptr_(__r.__ptr_), + __cntrl_(__r.__cntrl_) +{ + __r.__ptr_ = 0; + __r.__cntrl_ = 0; +} + +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) +template<class _Tp> +template<class _Yp> +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES +shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r, +#else +shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r, +#endif + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) + : __ptr_(__r.get()) +{ + typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; + __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); + __enable_weak_this(__r.get(), __r.get()); + __r.release(); +} +#endif + +template<class _Tp> +template <class _Yp, class _Dp> +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES +shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, +#else +shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, +#endif + typename enable_if + < + !is_lvalue_reference<_Dp>::value && + !is_array<_Yp>::value && + is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, + __nat + >::type) + : __ptr_(__r.get()) +{ +#if _LIBCPP_STD_VER > 11 + if (__ptr_ == nullptr) + __cntrl_ = nullptr; + else +#endif + { + typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT; + typedef __shared_ptr_pointer<_Yp*, _Dp, _AllocT > _CntrlBlk; + __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), _AllocT()); + __enable_weak_this(__r.get(), __r.get()); + } + __r.release(); +} + +template<class _Tp> +template <class _Yp, class _Dp> +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES +shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, +#else +shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, +#endif + typename enable_if + < + is_lvalue_reference<_Dp>::value && + !is_array<_Yp>::value && + is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value, + __nat + >::type) + : __ptr_(__r.get()) +{ +#if _LIBCPP_STD_VER > 11 + if (__ptr_ == nullptr) + __cntrl_ = nullptr; + else +#endif + { + typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT; + typedef __shared_ptr_pointer<_Yp*, + reference_wrapper<typename remove_reference<_Dp>::type>, + _AllocT > _CntrlBlk; + __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), _AllocT()); + __enable_weak_this(__r.get(), __r.get()); + } + __r.release(); +} + +#ifndef _LIBCPP_HAS_NO_VARIADICS + +template<class _Tp> +template<class ..._Args> +shared_ptr<_Tp> +shared_ptr<_Tp>::make_shared(_Args&& ...__args) +{ + static_assert( is_constructible<_Tp, _Args...>::value, "Can't construct object in make_shared" ); + typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; + typedef allocator<_CntrlBlk> _A2; + typedef __allocator_destructor<_A2> _D2; + _A2 __a2; + unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); + ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...); + shared_ptr<_Tp> __r; + __r.__ptr_ = __hold2.get()->get(); + __r.__cntrl_ = __hold2.release(); + __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); + return __r; +} + +template<class _Tp> +template<class _Alloc, class ..._Args> +shared_ptr<_Tp> +shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) +{ + static_assert( is_constructible<_Tp, _Args...>::value, "Can't construct object in allocate_shared" ); + typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; + typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2; + typedef __allocator_destructor<_A2> _D2; + _A2 __a2(__a); + unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); + ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) + _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...); + shared_ptr<_Tp> __r; + __r.__ptr_ = __hold2.get()->get(); + __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); + __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); + return __r; +} + +#else // _LIBCPP_HAS_NO_VARIADICS + +template<class _Tp> +shared_ptr<_Tp> +shared_ptr<_Tp>::make_shared() +{ + static_assert((is_constructible<_Tp>::value), "Can't construct object in make_shared" ); + typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; + typedef allocator<_CntrlBlk> _Alloc2; + typedef __allocator_destructor<_Alloc2> _D2; + _Alloc2 __alloc2; + unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); + ::new(__hold2.get()) _CntrlBlk(__alloc2); + shared_ptr<_Tp> __r; + __r.__ptr_ = __hold2.get()->get(); + __r.__cntrl_ = __hold2.release(); + __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); + return __r; +} + +template<class _Tp> +template<class _A0> +shared_ptr<_Tp> +shared_ptr<_Tp>::make_shared(_A0& __a0) +{ + static_assert((is_constructible<_Tp, _A0>::value), "Can't construct object in make_shared" ); + typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; + typedef allocator<_CntrlBlk> _Alloc2; + typedef __allocator_destructor<_Alloc2> _D2; + _Alloc2 __alloc2; + unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); + ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); + shared_ptr<_Tp> __r; + __r.__ptr_ = __hold2.get()->get(); + __r.__cntrl_ = __hold2.release(); + __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); + return __r; +} + +template<class _Tp> +template<class _A0, class _A1> +shared_ptr<_Tp> +shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) +{ + static_assert((is_constructible<_Tp, _A0, _A1>::value), "Can't construct object in make_shared" ); + typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; + typedef allocator<_CntrlBlk> _Alloc2; + typedef __allocator_destructor<_Alloc2> _D2; + _Alloc2 __alloc2; + unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); + ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); + shared_ptr<_Tp> __r; + __r.__ptr_ = __hold2.get()->get(); + __r.__cntrl_ = __hold2.release(); + __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); + return __r; +} + +template<class _Tp> +template<class _A0, class _A1, class _A2> +shared_ptr<_Tp> +shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) +{ + static_assert((is_constructible<_Tp, _A0, _A1, _A2>::value), "Can't construct object in make_shared" ); + typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; + typedef allocator<_CntrlBlk> _Alloc2; + typedef __allocator_destructor<_Alloc2> _D2; + _Alloc2 __alloc2; + unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); + ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); + shared_ptr<_Tp> __r; + __r.__ptr_ = __hold2.get()->get(); + __r.__cntrl_ = __hold2.release(); + __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); + return __r; +} + +template<class _Tp> +template<class _Alloc> +shared_ptr<_Tp> +shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) +{ + static_assert((is_constructible<_Tp>::value), "Can't construct object in allocate_shared" ); + typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; + typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; + typedef __allocator_destructor<_Alloc2> _D2; + _Alloc2 __alloc2(__a); + unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); + ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) + _CntrlBlk(__a); + shared_ptr<_Tp> __r; + __r.__ptr_ = __hold2.get()->get(); + __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); + __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); + return __r; +} + +template<class _Tp> +template<class _Alloc, class _A0> +shared_ptr<_Tp> +shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) +{ + static_assert((is_constructible<_Tp, _A0>::value), "Can't construct object in allocate_shared" ); + typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; + typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; + typedef __allocator_destructor<_Alloc2> _D2; + _Alloc2 __alloc2(__a); + unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); + ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) + _CntrlBlk(__a, __a0); + shared_ptr<_Tp> __r; + __r.__ptr_ = __hold2.get()->get(); + __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); + __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); + return __r; +} + +template<class _Tp> +template<class _Alloc, class _A0, class _A1> +shared_ptr<_Tp> +shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) +{ + static_assert((is_constructible<_Tp, _A0, _A1>::value), "Can't construct object in allocate_shared" ); + typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; + typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; + typedef __allocator_destructor<_Alloc2> _D2; + _Alloc2 __alloc2(__a); + unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); + ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) + _CntrlBlk(__a, __a0, __a1); + shared_ptr<_Tp> __r; + __r.__ptr_ = __hold2.get()->get(); + __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); + __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); + return __r; +} + +template<class _Tp> +template<class _Alloc, class _A0, class _A1, class _A2> +shared_ptr<_Tp> +shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) +{ + static_assert((is_constructible<_Tp, _A0, _A1, _A2>::value), "Can't construct object in allocate_shared" ); + typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; + typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2; + typedef __allocator_destructor<_Alloc2> _D2; + _Alloc2 __alloc2(__a); + unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); + ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get()))) + _CntrlBlk(__a, __a0, __a1, __a2); + shared_ptr<_Tp> __r; + __r.__ptr_ = __hold2.get()->get(); + __r.__cntrl_ = _VSTD::addressof(*__hold2.release()); + __r.__enable_weak_this(__r.__ptr_, __r.__ptr_); + return __r; +} + +#endif // _LIBCPP_HAS_NO_VARIADICS + +template<class _Tp> +shared_ptr<_Tp>::~shared_ptr() +{ + if (__cntrl_) + __cntrl_->__release_shared(); +} + +template<class _Tp> +inline +shared_ptr<_Tp>& +shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT +{ + shared_ptr(__r).swap(*this); + return *this; +} + +template<class _Tp> +template<class _Yp> +inline +typename enable_if +< + is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, + shared_ptr<_Tp>& +>::type +shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT +{ + shared_ptr(__r).swap(*this); + return *this; +} + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template<class _Tp> +inline +shared_ptr<_Tp>& +shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT +{ + shared_ptr(_VSTD::move(__r)).swap(*this); + return *this; +} + +template<class _Tp> +template<class _Yp> +inline +typename enable_if +< + is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, + shared_ptr<_Tp>& +>::type +shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) +{ + shared_ptr(_VSTD::move(__r)).swap(*this); + return *this; +} + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) +template<class _Tp> +template<class _Yp> +inline +typename enable_if +< + !is_array<_Yp>::value && + is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, + shared_ptr<_Tp> +>::type& +shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) +{ + shared_ptr(_VSTD::move(__r)).swap(*this); + return *this; +} +#endif + +template<class _Tp> +template <class _Yp, class _Dp> +inline +typename enable_if +< + !is_array<_Yp>::value && + is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, + typename shared_ptr<_Tp>::element_type*>::value, + shared_ptr<_Tp>& +>::type +shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) +{ + shared_ptr(_VSTD::move(__r)).swap(*this); + return *this; +} + +#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) +template<class _Tp> +template<class _Yp> +inline _LIBCPP_INLINE_VISIBILITY +typename enable_if +< + !is_array<_Yp>::value && + is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, + shared_ptr<_Tp>& +>::type +shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) +{ + shared_ptr(__r).swap(*this); + return *this; +} +#endif + +template<class _Tp> +template <class _Yp, class _Dp> +inline _LIBCPP_INLINE_VISIBILITY +typename enable_if +< + !is_array<_Yp>::value && + is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, + typename shared_ptr<_Tp>::element_type*>::value, + shared_ptr<_Tp>& +>::type +shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) +{ + shared_ptr(_VSTD::move(__r)).swap(*this); + return *this; +} + +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template<class _Tp> +inline +void +shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT +{ + _VSTD::swap(__ptr_, __r.__ptr_); + _VSTD::swap(__cntrl_, __r.__cntrl_); +} + +template<class _Tp> +inline +void +shared_ptr<_Tp>::reset() _NOEXCEPT +{ + shared_ptr().swap(*this); +} + +template<class _Tp> +template<class _Yp> +inline +typename enable_if +< + is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, + void +>::type +shared_ptr<_Tp>::reset(_Yp* __p) +{ + shared_ptr(__p).swap(*this); +} + +template<class _Tp> +template<class _Yp, class _Dp> +inline +typename enable_if +< + is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, + void +>::type +shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) +{ + shared_ptr(__p, __d).swap(*this); +} + +template<class _Tp> +template<class _Yp, class _Dp, class _Alloc> +inline +typename enable_if +< + is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value, + void +>::type +shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) +{ + shared_ptr(__p, __d, __a).swap(*this); +} + +#ifndef _LIBCPP_HAS_NO_VARIADICS + +template<class _Tp, class ..._Args> +inline _LIBCPP_INLINE_VISIBILITY +typename enable_if +< + !is_array<_Tp>::value, + shared_ptr<_Tp> +>::type +make_shared(_Args&& ...__args) +{ + return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...); +} + +template<class _Tp, class _Alloc, class ..._Args> +inline _LIBCPP_INLINE_VISIBILITY +typename enable_if +< + !is_array<_Tp>::value, + shared_ptr<_Tp> +>::type +allocate_shared(const _Alloc& __a, _Args&& ...__args) +{ + return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...); +} + +#else // _LIBCPP_HAS_NO_VARIADICS + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +shared_ptr<_Tp> +make_shared() +{ + return shared_ptr<_Tp>::make_shared(); +} + +template<class _Tp, class _A0> +inline _LIBCPP_INLINE_VISIBILITY +shared_ptr<_Tp> +make_shared(_A0& __a0) +{ + return shared_ptr<_Tp>::make_shared(__a0); +} + +template<class _Tp, class _A0, class _A1> +inline _LIBCPP_INLINE_VISIBILITY +shared_ptr<_Tp> +make_shared(_A0& __a0, _A1& __a1) +{ + return shared_ptr<_Tp>::make_shared(__a0, __a1); +} + +template<class _Tp, class _A0, class _A1, class _A2> +inline _LIBCPP_INLINE_VISIBILITY +shared_ptr<_Tp> +make_shared(_A0& __a0, _A1& __a1, _A2& __a2) +{ + return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); +} + +template<class _Tp, class _Alloc> +inline _LIBCPP_INLINE_VISIBILITY +shared_ptr<_Tp> +allocate_shared(const _Alloc& __a) +{ + return shared_ptr<_Tp>::allocate_shared(__a); +} + +template<class _Tp, class _Alloc, class _A0> +inline _LIBCPP_INLINE_VISIBILITY +shared_ptr<_Tp> +allocate_shared(const _Alloc& __a, _A0& __a0) +{ + return shared_ptr<_Tp>::allocate_shared(__a, __a0); +} + +template<class _Tp, class _Alloc, class _A0, class _A1> +inline _LIBCPP_INLINE_VISIBILITY +shared_ptr<_Tp> +allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) +{ + return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); +} + +template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> +inline _LIBCPP_INLINE_VISIBILITY +shared_ptr<_Tp> +allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) +{ + return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); +} + +#endif // _LIBCPP_HAS_NO_VARIADICS + +template<class _Tp, class _Up> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT +{ + return __x.get() == __y.get(); +} + +template<class _Tp, class _Up> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT +{ + return !(__x == __y); +} + +template<class _Tp, class _Up> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT +{ + typedef typename common_type<_Tp*, _Up*>::type _Vp; + return less<_Vp>()(__x.get(), __y.get()); +} + +template<class _Tp, class _Up> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT +{ + return __y < __x; +} + +template<class _Tp, class _Up> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT +{ + return !(__y < __x); +} + +template<class _Tp, class _Up> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT +{ + return !(__x < __y); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT +{ + return !__x; +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT +{ + return !__x; +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT +{ + return static_cast<bool>(__x); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT +{ + return static_cast<bool>(__x); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT +{ + return less<_Tp*>()(__x.get(), nullptr); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT +{ + return less<_Tp*>()(nullptr, __x.get()); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT +{ + return nullptr < __x; +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT +{ + return __x < nullptr; +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT +{ + return !(nullptr < __x); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT +{ + return !(__x < nullptr); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT +{ + return !(__x < nullptr); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT +{ + return !(nullptr < __x); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +void +swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT +{ + __x.swap(__y); +} + +template<class _Tp, class _Up> +inline _LIBCPP_INLINE_VISIBILITY +typename enable_if +< + !is_array<_Tp>::value && !is_array<_Up>::value, + shared_ptr<_Tp> +>::type +static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT +{ + return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); +} + +template<class _Tp, class _Up> +inline _LIBCPP_INLINE_VISIBILITY +typename enable_if +< + !is_array<_Tp>::value && !is_array<_Up>::value, + shared_ptr<_Tp> +>::type +dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT +{ + _Tp* __p = dynamic_cast<_Tp*>(__r.get()); + return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); +} + +template<class _Tp, class _Up> +typename enable_if +< + is_array<_Tp>::value == is_array<_Up>::value, + shared_ptr<_Tp> +>::type +const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT +{ + typedef typename remove_extent<_Tp>::type _RTp; + return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get())); +} + +#ifndef _LIBCPP_NO_RTTI + +template<class _Dp, class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +_Dp* +get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT +{ + return __p.template __get_deleter<_Dp>(); +} + +#endif // _LIBCPP_NO_RTTI + +template<class _Tp> +class _LIBCPP_TEMPLATE_VIS weak_ptr +{ +public: + typedef _Tp element_type; +private: + element_type* __ptr_; + __shared_weak_count* __cntrl_; + +public: + _LIBCPP_INLINE_VISIBILITY + _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT; + template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r, + typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) + _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + weak_ptr(weak_ptr const& __r) _NOEXCEPT; + template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r, + typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) + _NOEXCEPT; + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + _LIBCPP_INLINE_VISIBILITY + weak_ptr(weak_ptr&& __r) _NOEXCEPT; + template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r, + typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0) + _NOEXCEPT; +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + ~weak_ptr(); + + _LIBCPP_INLINE_VISIBILITY + weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT; + template<class _Yp> + typename enable_if + < + is_convertible<_Yp*, element_type*>::value, + weak_ptr& + >::type + _LIBCPP_INLINE_VISIBILITY + operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT; + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + + _LIBCPP_INLINE_VISIBILITY + weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT; + template<class _Yp> + typename enable_if + < + is_convertible<_Yp*, element_type*>::value, + weak_ptr& + >::type + _LIBCPP_INLINE_VISIBILITY + operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT; + +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + + template<class _Yp> + typename enable_if + < + is_convertible<_Yp*, element_type*>::value, + weak_ptr& + >::type + _LIBCPP_INLINE_VISIBILITY + operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT; + + _LIBCPP_INLINE_VISIBILITY + void swap(weak_ptr& __r) _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + void reset() _NOEXCEPT; + + _LIBCPP_INLINE_VISIBILITY + long use_count() const _NOEXCEPT + {return __cntrl_ ? __cntrl_->use_count() : 0;} + _LIBCPP_INLINE_VISIBILITY + bool expired() const _NOEXCEPT + {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} + shared_ptr<_Tp> lock() const _NOEXCEPT; + template<class _Up> + _LIBCPP_INLINE_VISIBILITY + bool owner_before(const shared_ptr<_Up>& __r) const _NOEXCEPT + {return __cntrl_ < __r.__cntrl_;} + template<class _Up> + _LIBCPP_INLINE_VISIBILITY + bool owner_before(const weak_ptr<_Up>& __r) const _NOEXCEPT + {return __cntrl_ < __r.__cntrl_;} + + template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr; + template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr; +}; + +template<class _Tp> +inline +_LIBCPP_CONSTEXPR +weak_ptr<_Tp>::weak_ptr() _NOEXCEPT + : __ptr_(0), + __cntrl_(0) +{ +} + +template<class _Tp> +inline +weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT + : __ptr_(__r.__ptr_), + __cntrl_(__r.__cntrl_) +{ + if (__cntrl_) + __cntrl_->__add_weak(); +} + +template<class _Tp> +template<class _Yp> +inline +weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, + typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) + _NOEXCEPT + : __ptr_(__r.__ptr_), + __cntrl_(__r.__cntrl_) +{ + if (__cntrl_) + __cntrl_->__add_weak(); +} + +template<class _Tp> +template<class _Yp> +inline +weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, + typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) + _NOEXCEPT + : __ptr_(__r.__ptr_), + __cntrl_(__r.__cntrl_) +{ + if (__cntrl_) + __cntrl_->__add_weak(); +} + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template<class _Tp> +inline +weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT + : __ptr_(__r.__ptr_), + __cntrl_(__r.__cntrl_) +{ + __r.__ptr_ = 0; + __r.__cntrl_ = 0; +} + +template<class _Tp> +template<class _Yp> +inline +weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r, + typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type) + _NOEXCEPT + : __ptr_(__r.__ptr_), + __cntrl_(__r.__cntrl_) +{ + __r.__ptr_ = 0; + __r.__cntrl_ = 0; +} + +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template<class _Tp> +weak_ptr<_Tp>::~weak_ptr() +{ + if (__cntrl_) + __cntrl_->__release_weak(); +} + +template<class _Tp> +inline +weak_ptr<_Tp>& +weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT +{ + weak_ptr(__r).swap(*this); + return *this; +} + +template<class _Tp> +template<class _Yp> +inline +typename enable_if +< + is_convertible<_Yp*, _Tp*>::value, + weak_ptr<_Tp>& +>::type +weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT +{ + weak_ptr(__r).swap(*this); + return *this; +} + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template<class _Tp> +inline +weak_ptr<_Tp>& +weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT +{ + weak_ptr(_VSTD::move(__r)).swap(*this); + return *this; +} + +template<class _Tp> +template<class _Yp> +inline +typename enable_if +< + is_convertible<_Yp*, _Tp*>::value, + weak_ptr<_Tp>& +>::type +weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT +{ + weak_ptr(_VSTD::move(__r)).swap(*this); + return *this; +} + +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template<class _Tp> +template<class _Yp> +inline +typename enable_if +< + is_convertible<_Yp*, _Tp*>::value, + weak_ptr<_Tp>& +>::type +weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT +{ + weak_ptr(__r).swap(*this); + return *this; +} + +template<class _Tp> +inline +void +weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT +{ + _VSTD::swap(__ptr_, __r.__ptr_); + _VSTD::swap(__cntrl_, __r.__cntrl_); +} + +template<class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +void +swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT +{ + __x.swap(__y); +} + +template<class _Tp> +inline +void +weak_ptr<_Tp>::reset() _NOEXCEPT +{ + weak_ptr().swap(*this); +} + +template<class _Tp> +template<class _Yp> +shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, + typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type) + : __ptr_(__r.__ptr_), + __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) +{ + if (__cntrl_ == 0) + __throw_bad_weak_ptr(); +} + +template<class _Tp> +shared_ptr<_Tp> +weak_ptr<_Tp>::lock() const _NOEXCEPT +{ + shared_ptr<_Tp> __r; + __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; + if (__r.__cntrl_) + __r.__ptr_ = __ptr_; + return __r; +} + +#if _LIBCPP_STD_VER > 14 +template <class _Tp = void> struct owner_less; +#else +template <class _Tp> struct owner_less; +#endif + +template <class _Tp> +struct _LIBCPP_TEMPLATE_VIS owner_less<shared_ptr<_Tp> > + : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> +{ + typedef bool result_type; + _LIBCPP_INLINE_VISIBILITY + bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT + {return __x.owner_before(__y);} + _LIBCPP_INLINE_VISIBILITY + bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT + {return __x.owner_before(__y);} + _LIBCPP_INLINE_VISIBILITY + bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT + {return __x.owner_before(__y);} +}; + +template <class _Tp> +struct _LIBCPP_TEMPLATE_VIS owner_less<weak_ptr<_Tp> > + : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> +{ + typedef bool result_type; + _LIBCPP_INLINE_VISIBILITY + bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT + {return __x.owner_before(__y);} + _LIBCPP_INLINE_VISIBILITY + bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT + {return __x.owner_before(__y);} + _LIBCPP_INLINE_VISIBILITY + bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT + {return __x.owner_before(__y);} +}; + +#if _LIBCPP_STD_VER > 14 +template <> +struct _LIBCPP_TEMPLATE_VIS owner_less<void> +{ + template <class _Tp, class _Up> + _LIBCPP_INLINE_VISIBILITY + bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT + {return __x.owner_before(__y);} + template <class _Tp, class _Up> + _LIBCPP_INLINE_VISIBILITY + bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const _NOEXCEPT + {return __x.owner_before(__y);} + template <class _Tp, class _Up> + _LIBCPP_INLINE_VISIBILITY + bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT + {return __x.owner_before(__y);} + template <class _Tp, class _Up> + _LIBCPP_INLINE_VISIBILITY + bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const _NOEXCEPT + {return __x.owner_before(__y);} + typedef void is_transparent; +}; +#endif + +template<class _Tp> +class _LIBCPP_TEMPLATE_VIS enable_shared_from_this +{ + mutable weak_ptr<_Tp> __weak_this_; +protected: + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR + enable_shared_from_this() _NOEXCEPT {} + _LIBCPP_INLINE_VISIBILITY + enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {} + _LIBCPP_INLINE_VISIBILITY + enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT + {return *this;} + _LIBCPP_INLINE_VISIBILITY + ~enable_shared_from_this() {} +public: + _LIBCPP_INLINE_VISIBILITY + shared_ptr<_Tp> shared_from_this() + {return shared_ptr<_Tp>(__weak_this_);} + _LIBCPP_INLINE_VISIBILITY + shared_ptr<_Tp const> shared_from_this() const + {return shared_ptr<const _Tp>(__weak_this_);} + +#if _LIBCPP_STD_VER > 14 + _LIBCPP_INLINE_VISIBILITY + weak_ptr<_Tp> weak_from_this() _NOEXCEPT + { return __weak_this_; } + + _LIBCPP_INLINE_VISIBILITY + weak_ptr<const _Tp> weak_from_this() const _NOEXCEPT + { return __weak_this_; } +#endif // _LIBCPP_STD_VER > 14 + + template <class _Up> friend class shared_ptr; +}; + +template <class _Tp> +struct _LIBCPP_TEMPLATE_VIS hash<shared_ptr<_Tp> > +{ + typedef shared_ptr<_Tp> argument_type; + typedef size_t result_type; + + _LIBCPP_INLINE_VISIBILITY + result_type operator()(const argument_type& __ptr) const _NOEXCEPT + { + return hash<_Tp*>()(__ptr.get()); + } +}; + +template<class _CharT, class _Traits, class _Yp> +inline _LIBCPP_INLINE_VISIBILITY +basic_ostream<_CharT, _Traits>& +operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p); + + +#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) + +class _LIBCPP_TYPE_VIS __sp_mut +{ + void* __lx; +public: + void lock() _NOEXCEPT; + void unlock() _NOEXCEPT; + +private: + _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT; + __sp_mut(const __sp_mut&); + __sp_mut& operator=(const __sp_mut&); + + friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*); +}; + +_LIBCPP_FUNC_VIS _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR +__sp_mut& __get_sp_mut(const void*); + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +bool +atomic_is_lock_free(const shared_ptr<_Tp>*) +{ + return false; +} + +template <class _Tp> +_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR +shared_ptr<_Tp> +atomic_load(const shared_ptr<_Tp>* __p) +{ + __sp_mut& __m = __get_sp_mut(__p); + __m.lock(); + shared_ptr<_Tp> __q = *__p; + __m.unlock(); + return __q; +} + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR +shared_ptr<_Tp> +atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) +{ + return atomic_load(__p); +} + +template <class _Tp> +_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR +void +atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) +{ + __sp_mut& __m = __get_sp_mut(__p); + __m.lock(); + __p->swap(__r); + __m.unlock(); +} + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR +void +atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) +{ + atomic_store(__p, __r); +} + +template <class _Tp> +_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR +shared_ptr<_Tp> +atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) +{ + __sp_mut& __m = __get_sp_mut(__p); + __m.lock(); + __p->swap(__r); + __m.unlock(); + return __r; +} + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR +shared_ptr<_Tp> +atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) +{ + return atomic_exchange(__p, __r); +} + +template <class _Tp> +_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR +bool +atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) +{ + shared_ptr<_Tp> __temp; + __sp_mut& __m = __get_sp_mut(__p); + __m.lock(); + if (__p->__owner_equivalent(*__v)) + { + _VSTD::swap(__temp, *__p); + *__p = __w; + __m.unlock(); + return true; + } + _VSTD::swap(__temp, *__v); + *__v = *__p; + __m.unlock(); + return false; +} + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR +bool +atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) +{ + return atomic_compare_exchange_strong(__p, __v, __w); +} + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR +bool +atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, + shared_ptr<_Tp> __w, memory_order, memory_order) +{ + return atomic_compare_exchange_strong(__p, __v, __w); +} + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR +bool +atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, + shared_ptr<_Tp> __w, memory_order, memory_order) +{ + return atomic_compare_exchange_weak(__p, __v, __w); +} + +#endif // !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER) + +//enum class +#if defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) +# ifndef _LIBCPP_CXX03_LANG +enum class pointer_safety : unsigned char { + relaxed, + preferred, + strict +}; +# endif +#else +struct _LIBCPP_TYPE_VIS pointer_safety +{ + enum __lx + { + relaxed, + preferred, + strict + }; + + __lx __v_; + + _LIBCPP_INLINE_VISIBILITY + pointer_safety() : __v_() {} + + _LIBCPP_INLINE_VISIBILITY + pointer_safety(__lx __v) : __v_(__v) {} + _LIBCPP_INLINE_VISIBILITY + operator int() const {return __v_;} +}; +#endif + +#if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) && \ + defined(_LIBCPP_BUILDING_MEMORY) +_LIBCPP_FUNC_VIS pointer_safety get_pointer_safety() _NOEXCEPT; +#else +// This function is only offered in C++03 under ABI v1. +# if !defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE) || !defined(_LIBCPP_CXX03_LANG) +inline _LIBCPP_INLINE_VISIBILITY +pointer_safety get_pointer_safety() _NOEXCEPT { + return pointer_safety::relaxed; +} +# endif +#endif + + +_LIBCPP_FUNC_VIS void declare_reachable(void* __p); +_LIBCPP_FUNC_VIS void declare_no_pointers(char* __p, size_t __n); +_LIBCPP_FUNC_VIS void undeclare_no_pointers(char* __p, size_t __n); +_LIBCPP_FUNC_VIS void* __undeclare_reachable(void* __p); + +template <class _Tp> +inline _LIBCPP_INLINE_VISIBILITY +_Tp* +undeclare_reachable(_Tp* __p) +{ + return static_cast<_Tp*>(__undeclare_reachable(__p)); +} + +_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); + +// --- Helper for container swap -- +template <typename _Alloc> +inline _LIBCPP_INLINE_VISIBILITY +void __swap_allocator(_Alloc & __a1, _Alloc & __a2) +#if _LIBCPP_STD_VER >= 14 + _NOEXCEPT +#else + _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) +#endif +{ + __swap_allocator(__a1, __a2, + integral_constant<bool, _VSTD::allocator_traits<_Alloc>::propagate_on_container_swap::value>()); +} + +template <typename _Alloc> +_LIBCPP_INLINE_VISIBILITY +void __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type) +#if _LIBCPP_STD_VER >= 14 + _NOEXCEPT +#else + _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) +#endif +{ + using _VSTD::swap; + swap(__a1, __a2); +} + +template <typename _Alloc> +inline _LIBCPP_INLINE_VISIBILITY +void __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {} + +template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> > +struct __noexcept_move_assign_container : public integral_constant<bool, + _Traits::propagate_on_container_move_assignment::value +#if _LIBCPP_STD_VER > 14 + || _Traits::is_always_equal::value +#else + && is_nothrow_move_assignable<_Alloc>::value +#endif + > {}; + + +#ifndef _LIBCPP_HAS_NO_VARIADICS +template <class _Tp, class _Alloc> +struct __temp_value { + typedef allocator_traits<_Alloc> _Traits; + + typename aligned_storage<sizeof(_Tp), alignof(_Tp)>::type __v; + _Alloc &__a; + + _Tp *__addr() { return reinterpret_cast<_Tp *>(addressof(__v)); } + _Tp & get() { return *__addr(); } + + template<class... _Args> + __temp_value(_Alloc &__alloc, _Args&& ... __args) : __a(__alloc) + { _Traits::construct(__a, __addr(), _VSTD::forward<_Args>(__args)...); } + + ~__temp_value() { _Traits::destroy(__a, __addr()); } + }; +#endif + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP_MEMORY |