Re: capturing system shutdown signals?

I think the signal-handler stuff in the UNIX package should help you.
Install one or more handler(s) I guess:

https://github.com/sbcl/sbcl/blob/master/src/code/signal.lisp

For Unix-like (POSIX)
signals, see:

https://sites.uclouvain.be/SystInfo/usr/include/asm-generic/signal.h.html


You will first need to handle the SIGTERM, 15 , but eventually 9, hard
kill. Eventually more since there are also some other terminaison
mechanisms,  but I think the SBCL debugger is invoked there, for example
floating-point exceptions (division by 0 for example). See man signal(s).

https://pubs.opengroup.org/onlinepubs/7908799/xsh/signal.h.html


- Greg






Le sam. 27 avr. 2024 à 00:31, Stas Boukarev <[email protected]> a écrit :

> My "man kill" doesn't contain the word "shutdown" and
> kill -L
> says
> kill: unknown signal: SIGL
>
> On Sat, Apr 27, 2024 at 1:15 AM Jeff Cunningham <[email protected]>
> wrote:
>
>> See "man kill" or "kill -L" for a list.
>>
>>
>>
>>
>> On Fri, 26 Apr 2024 23:36:18 +0300
>> Stas Boukarev <[email protected]> wrote:
>>
>> > What's a shutdown signal?
>> >
>> > On Fri, Apr 26, 2024 at 8:14 PM Jeff Cunningham <
>> [email protected]>
>> > wrote:
>> >
>> > > Is there a way to capture a general shutdown signal in a running
>> > > sbcl-compiled program (Hunchentoot
>> > > server) so it can gracefully do some house-keeping first? This is
>> running
>> > > on a Linux platform. I
>> > > had a binary data file destroyed the other day from improper closure
>> while
>> > > writing.
>> > >
>> > > Best regards,
>> > >
>> > > -- Jeff
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > > _______________________________________________
>> > > Sbcl-help mailing list
>> > > [email protected]
>> > > https://lists.sourceforge.net/lists/listinfo/sbcl-help
>> > >
>>
>> _______________________________________________
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