Quoting Daniel Barlow (dan@...):
> I'm not violently opposed to it. I wonder, though, what people want
> to do with the answers: by the time the list is consed, the data may
> no longer be valid. In thw worst case (which would probably involve
For example: Display a list of processes. (And so does sb-aclrepl.)
Users have to deal with that uncertainty every time they type "ps" or
> someone trying to break it deliberately, I concede) you could even get
> a thread id that now belongs to another non-sbcl process altogether.
I wouldn't dare asking for thread objects, which know whether they still
exist or not and have a name...