std::coroutine_handle::promise - cppreference.com (original) (raw)

| Member of the primary template | | | | ---------------------------------------------------------------------------------------------- | | ------------- | | Promise& promise() const; | | (since C++20) | | Member of specialization std::coroutine_handlestd::noop\_coroutine\_promise | | | | std::noop_coroutine_promise& promise() const noexcept; | | (since C++20) |

Obtains a reference to the promise object.

The behavior is undefined if *this does not refer to a coroutine whose promise object has not been destroyed.

This function is not provided for the specialization std::coroutine_handle<>.

[edit] Parameters

(none)

[edit] Return value

A reference to the promise object.

[edit] Notes

The promise object of a no-op coroutine is not destroyed as long as there is some std::noop_coroutine_handle referring to the coroutine.

[edit] See also

| | creates a coroutine_handle from the promise object of a coroutine (public static member function) [edit] | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |