Thank you for the link. I am thinking about this.

What I think we probably need is a kind of "non-detached thread" that
is garbage-collected when there are no more references to its thread
object. (It may also be called a weak thread.) SRFI 18/226 threads are
all detached in some sense.

Am Mo., 10. Okt. 2022 um 18:20 Uhr schrieb John Cowan <xxxxxx@ccil.org>:
>
> https://openjdk.org/jeps/428
>
> The API specifics don't matter, but the explanation of what thread-runners are about may be useful.