Re: [Sbcl-devel] RFC: exiting SBCL vs returning from a thread vs aborting a thread

[Nikodemus S. <nik...@ra...>]

Thanks for comments. Take two attached, and at:

  https://github.com/nikodemus/SBCL/commit/ed4e592fc0f79f95c2e5deef05c8dce946b141a6

Essential change to previous version: EXIT :ABORT NIL will call
TERMINATE-THREAD on all other threads, and then wait for :TIMEOUT
seconds for those threads to actually finish (defaulting to 60.)

Re. recursive exit -> :abort t. This seemed the simplest way to ensure
things remain sane. It would be possible to provide more complex
handling, but I fear it would be tricky to keep documentation and
implementation in synch, and I'm reluctant to get too clever in
absence of use-cases.

Same applies to error handling during exit. There is actually a
mechanism for it, but I left it undocumented in the interest of
simplicity -- if it turns out people need it, we can see if the
current mechanism covers their uses cases, and then document it.

Cheers,

 -- Nikodemus