constexpr coroutine_handle() noexcept; | (1) | (since C++20) |
constexpr coroutine_handle( std::nullptr_t ) noexcept; | (2) | (since C++20) |
coroutine_handle( const coroutine_handle& other ) = default; | (3) | (since C++20) |
coroutine_handle( coroutine_handle&& other ) = default; | (4) | (since C++20) |
Creates a coroutine_handle
that does not refer a coroutine, or copies a coroutine_handle
.
nullptr
. After construction, address()
returns nullptr
, and the coroutine_handle
does not refer a coroutine. These constructors are not declared for the specialization std::coroutine_handle<std::noop_coroutine_promise>
.other | - | another coroutine_handle to copy |
std::coroutine_handle<std::noop_coroutine_promise>
is neither default constructible nor constructible from std::nullptr_t
. std::noop_coroutine
can be used to create a new std::coroutine_handle<std::noop_coroutine_promise>
.
Static member functions from_promise
and from_address
can also create a coroutine_handle
.
[static] (C++20) | creates a coroutine_handle from the promise object of a coroutine (public static member function) |
[static] (C++20) | imports a coroutine from a pointer (public static member function) |
(C++20) | creates a coroutine handle that has no observable effects when resumed or destroyed (function) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
https://en.cppreference.com/w/cpp/coroutine/coroutine_handle/coroutine_handle