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From: "Richard B. Johnson" <root@chaos.analogic.com>
To: Alex Davis <alex14641@yahoo.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: signal handling issue.
Date: Wed, 19 May 2004 07:39:10 -0400 (EDT)	[thread overview]
Message-ID: <Pine.LNX.4.53.0405190734280.2283@chaos> (raw)
In-Reply-To: <20040519054507.63816.qmail@web50201.mail.yahoo.com>

On Tue, 18 May 2004, Alex Davis wrote:

> There appears to be a change between linux 2.4 and 2.6
> in how signals are handled. As a test, I wrote the program
> below:
>
> #include <stdio.h>
> #include <signal.h>
> #include <setjmp.h>
>
> static jmp_buf env;
>
> static void handler(int s) {
>         printf("caught signal %d\n", s);
>         longjmp(env, 1);
> }

[SNIPPED...]

A a couple years ago they changed the rules. You can't longjmp
from a signal handler anymore. There's some other function
call with 'sig' in it, like siglongjmp or something like
that. Ahh... here it is:

/usr/include/setjmp.h:extern void siglongjmp __P ((sigjmp_buf __env, int __val))


Cheers,
Dick Johnson
Penguin : Linux version 2.4.26 on an i686 machine (5557.45 BogoMips).
            Note 96.31% of all statistics are fiction.



  parent reply	other threads:[~2004-05-19 11:37 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-05-19  5:45 Alex Davis
2004-05-19  6:18 ` Ulrich Drepper
2004-05-19 11:39 ` Richard B. Johnson [this message]
2004-05-19  5:56 Alex Davis
2004-05-19  6:56 Alex Davis

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