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Re: console-client signal handling


From: Marco Gerards
Subject: Re: console-client signal handling
Date: Thu, 15 Jul 2004 23:37:49 +0200
User-agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (gnu/linux)

Ognyan Kulev <address@hidden> writes:

> Ognyan Kulev wrote:
>> Marco Gerards wrote:
>>> Many people complain on IRC about the console client and that it does
>>> not catch the signals.  So when you send a SIGTERM signal to the
>>> console it does not correctly clean up its state.  The same is true
>>> for the SIGINT signal.
>> Why not add SIGQUIT too?
>
> Or SIGHUP?  I'm not sure what is correct.

Well, I could do that.  Normally (on modern systems) it is used to
restart the program.  But in case of the console we should either
ignore, reinitialize the console or exit it.  I prefer it works alike
the other signals and it will exit the console client.  I will add
that functionality.

> SIGQUIT is meant to terminate and dump core, so that core is inspected
> for errors.  Perhaps we don't want to clean up drivers' state?

Right.  Like I said in my other email, I prefer not to handle SIGQUIT.

> SIGHUP is for terminal hang-up, so we want to clean up state.

Right.

> Looking at the list of signals, these 4 seems to be the only
> user-controlled signals of interest.

Great.  Thanks for checking this.  The book I have here did not cover
SIGHUP so I `forgot' about it.

Thanks,
Marco





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