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Re: busyloop in sigchld_handler
From: |
Andreas Schwab |
Subject: |
Re: busyloop in sigchld_handler |
Date: |
Wed, 14 Mar 2007 11:22:51 +0100 |
User-agent: |
Gnus/5.110006 (No Gnus v0.6) Emacs/22.0.91 (gnu/linux) |
David Kastrup <address@hidden> writes:
> The signal manpage says:
>
> When a signal occurs, and func points to a function, it is
> implementation-defined whether the equivalent of a:
>
> signal(sig, SIG_DFL);
>
> is executed or the implementation prevents some
> implementation-defined set of signals (at least including
> sig) from occurring until the current signal handling has
> completed.
>
> So even though SIGCHLD may be interrupted by another signal, this does
> not mean that the other signal handler gets a chance to run.
This is a complete red herring. The Linux kernel (and all XSI compliant
systems) always blocks the invoking signal when a handler is invoked.
Andreas.
--
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
- Re: busyloop in sigchld_handler, (continued)
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/12
- Re: busyloop in sigchld_handler, David Kastrup, 2007/03/13
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/13
- Re: busyloop in sigchld_handler, David Kastrup, 2007/03/13
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/13
- Re: busyloop in sigchld_handler, David Kastrup, 2007/03/13
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/13
- Re: busyloop in sigchld_handler, David Kastrup, 2007/03/14
- Re: busyloop in sigchld_handler, Kim F. Storm, 2007/03/14
- Re: busyloop in sigchld_handler, David Kastrup, 2007/03/14
- Re: busyloop in sigchld_handler,
Andreas Schwab <=
- Re: busyloop in sigchld_handler, David Kastrup, 2007/03/14
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/14
- Re: busyloop in sigchld_handler, David Kastrup, 2007/03/14
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/14
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/14
- Re: busyloop in sigchld_handler, Kim F. Storm, 2007/03/14
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/14
- Re: busyloop in sigchld_handler, Kim F. Storm, 2007/03/14
- Re: busyloop in sigchld_handler, Andreas Schwab, 2007/03/14
- Re: busyloop in sigchld_handler, Kim F. Storm, 2007/03/14