std::out_ptr_t<Smart,Pointer,Args...>::~out_ptr_t

From cppreference.com

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros(C++20)
Language support library
Concepts library(C++20)
Diagnostics library
Memory management library
Metaprogramming library(C++11)
General utilities library
Containers library
Iterators library
Ranges library(C++20)
Algorithms library
Strings library
Text processing library
Numerics library
Date and time library
Input/output library
Filesystem library(C++17)
Concurrency support library(C++11)
Execution control library(C++26)
Technical specifications
Symbols index
External libraries

[edit]

Memory management library

voidify

(exposition only*)

Allocators

allocator
allocator_traits (C++11)
allocation_result (C++23)
scoped_allocator_adaptor (C++11)
pmr::polymorphic_allocator (C++17)

allocator_arg (C++11)
uses_allocator (C++11)
uses_allocator_construction_args (C++20)
make_obj_using_allocator (C++20)
uninitialized_construct_using_allocator (C++20)

Uninitialized memory algorithms

uninitialized_copy
uninitialized_fill
uninitialized_move (C++17)
uninitialized_copy_n (C++11)
uninitialized_fill_n
uninitialized_move_n (C++17)
construct_at (C++20)

uninitialized_default_construct (C++17)
uninitialized_value_construct (C++17)
destroy (C++17)
uninitialized_default_construct_n (C++17)
uninitialized_value_construct_n (C++17)
destroy_n (C++17)
destroy_at (C++17)

Constrained uninitialized memory algorithms

ranges::uninitialized_copy (C++20)
ranges::uninitialized_fill (C++20)
ranges::uninitialized_move (C++20)
ranges::uninitialized_copy_n (C++20)
ranges::uninitialized_fill_n (C++20)
ranges::uninitialized_move_n (C++20)
ranges::construct_at (C++20)

ranges::uninitialized_default_construct (C++20)
ranges::uninitialized_value_construct (C++20)
ranges::destroy (C++20)
ranges::uninitialized_default_construct_n (C++20)
ranges::uninitialized_value_construct_n (C++20)
ranges::destroy_n (C++20)
ranges::destroy_at (C++20)

Memory resources

pmr::memory_resource (C++17)
pmr::get_default_resource (C++17)
pmr::set_default_resource (C++17)
pmr::new_delete_resource (C++17)
pmr::pool_options (C++17)

pmr::null_memory_resource (C++17)
pmr::synchronized_pool_resource (C++17)
pmr::unsynchronized_pool_resource (C++17)
pmr::monotonic_buffer_resource (C++17)

Explicit lifetime management
start_lifetime_as (C++23)
start_lifetime_as_array (C++23)

Types for composite class design
indirect (C++26)
polymorphic (C++26)

Uninitialized storage(until C++20)

raw_storage_iterator (until C++20*)
get_temporary_buffer (until C++20*)

return_temporary_buffer (until C++20*)

Garbage collector support(until C++23)

declare_reachable (C++11)(until C++23)
declare_no_pointers (C++11)(until C++23)
pointer_safety (C++11)(until C++23)

undeclare_reachable (C++11)(until C++23)
undeclare_no_pointers (C++11)(until C++23)
get_pointer_safety (C++11)(until C++23)

Low level memory
management

operator newoperator new[]

operator deleteoperator delete[]

(C++11)

(C++11)

(C++17)

(C++20)

(C++17)

(C++11)

(C++11)

(C++11)

(until C++17*)

(C++11)

(C++17)

(C++26)

(C++26)

enable_shared_from_this

(C++11)

(C++11)

(C++11)

(C++23)

(C++23)

(C++11)

(C++20)

(C++11)

(C++11)

(C++20)

is_sufficiently_aligned

(C++26)

C Library

malloc
calloc
realloc

free
aligned_alloc (C++17)

[edit]

std::out_ptr_t

Member functions
out_ptr_t::out_ptr_t
out_ptr_t::~out_ptr_t
out_ptr_t::operator Pointerout_ptr_t::operator void*
Non-member functions
out_ptr

[edit]

~out_ptr_t();		(since C++23)

Resets the adaptedSmart object by the value of modifiedPointer object (or thevoid* object ifoperatorvoid**() has been called) and the captured arguments.

Let

s denotes the adaptedSmart object,
args... denotes the captured arguments,
p denotes the value of storedPointer, orstatic_cast<Pointer>(*operatorvoid**()) ifoperatorvoid** has been called,
SP be
- Smart::pointer, if it is valid and denotes a type, otherwise,
- Smart::element_type*, ifSmart::element_type is valid and denotes a type, otherwise,
- std::pointer_traits<Smart>::element_type*, ifstd::pointer_traits<Smart>::element_type is valid and denotes a type, otherwise,
- Pointer.

Ifs.reset(static_cast<SP>(p),std::forward<Args>(args)...) is well-formed, the destructor performs

if(p) s.reset(static_cast<SP>(p),std::forward<Args>(args)...);,

otherwise, ifstd::is_constructible_v<Smart, SP, Args...> istrue, the destructor performs

if(p) s= Smart(static_cast<SP>(p),std::forward<Args>(args)...);,

otherwise, the program is ill-formed.

[edit]Notes

IfSmart is astd::shared_ptr specialization, the implementation may allocate the storage for the new control block on construction, in order to leave non-throwing works to the destructor.

Arguments captured by value are destroyed after resetting.

Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/memory/out_ptr_t/%7Eout_ptr_t&oldid=130150"

Movatterモバイル変換

cppreference.com

Namespaces

Variants

Views

Actions

std::out_ptr_t<Smart,Pointer,Args...>::~out_ptr_t

[edit]Notes

Navigation

Toolbox