Re: capturing system shutdown signals?

Catching unix signals won't help programs that can't unwind cleanly. Unless
you just ignore them.

On Sat, Apr 27, 2024 at 1:52 AM Grégory Vanuxem <[email protected]> wrote:

> 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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>

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