Re: about usage of `sigaction'

[Kevin Ryde]

William Xu <address@hidden> writes:
>
> Currently it just makes me feel uncomfortable when it doesn't work as
> expected.. I hope someday it could get fixed.

I'll add something like the following to the manual for a start, to at
least describe how it works now ...

        Scheme code signal handlers are run via a system async (*note
        System asyncs::), so they're called in the handler's thread at
        the next safe opportunity.  Generally this is after any
        currently executing primitive procedure finishes (which could
        be a long time for primitives that wait for an external
        event).

Incidentally, if you just want to not create zombies among exited
children, apparently setting SIGCHLD to SIG_IGN works in current posix
(but not older systems).

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