std::coroutine_handle<Promise>:: from_promise

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C++
Utilities library
General utilities
Relational operators (deprecated in C++20)
Coroutine support
Coroutine traits
(C++20)
Coroutine handle
(C++20)
No-op coroutines
(C++20)
(C++20)
Trivial awaitables
(C++20)
(C++20)
Range generators
(C++23)
std::coroutine_handle
static coroutine_handle from_promise ( Promise & p ) ;
(since C++20)

Creates a coroutine_handle from the promise object of a coroutine. The created coroutine_handle refers the coroutine, and promise() returns a reference to p .

The behavior is undefined if p is not a reference to a promise object. This function is only provided for the primary template, i.e. specializations std:: coroutine_handle <> and std:: coroutine_handle < std:: noop_coroutine_promise > do not have this function.

Parameters

p - promise object of a coroutine to refer

Return value

A coroutine_handle referring the given coroutine.

Example

This section is incomplete
Reason: no example

See also

constructs a coroutine_handle object
(public member function)
[static]
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)
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