From: Christopher Smith <x@xman.org>
To: Jamie Lokier <lk@tantalophile.demon.co.uk>, Dan Kegel <dank@kegel.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: A signal fairy tale
Date: Wed, 27 Jun 2001 11:16:08 -0700 [thread overview]
Message-ID: <53790000.993665768@hellman> (raw)
In-Reply-To: <20010627111827.A22744@pcep-jamie.cern.ch>
--On Wednesday, June 27, 2001 11:18:28 +0200 Jamie Lokier
<lk@tantalophile.demon.co.uk> wrote:
> Btw, this functionality is already available using sigaction(). Just
> search for a signal whose handler is SIG_DFL. If you then block that
> signal before changing, checking the result, and unblocking the signal,
> you can avoid race conditions too. (This is what my programs do).
It's more than whether a signal is blocked or not, unfortunately. Lots of
applications will invoke sigwaitinfo() on whatever the current signal mask
is, which means you can't rely on sigaction to solve your problems. :-(
--Chris
next prev parent reply other threads:[~2001-06-27 18:18 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-26 12:54 A signal fairy tale Dan Kegel
2001-06-27 3:56 ` Christopher Smith
2001-06-27 6:21 ` Balbir Singh
2001-06-27 18:11 ` Christopher Smith
2001-06-28 3:28 ` Balbir Singh
2001-06-27 9:18 ` Jamie Lokier
2001-06-27 18:16 ` Christopher Smith [this message]
2001-06-28 12:58 ` John Fremlin
2001-06-28 16:21 ` Jamie Lokier
2001-06-29 8:22 ` Christopher Smith
2001-06-29 11:47 ` John Fremlin
-- strict thread matches above, loose matches on Subject: below --
2001-06-28 2:49 Daniel R. Kegel
2001-06-29 8:18 ` Christopher Smith
2001-06-29 9:05 ` Dan Kegel
2001-06-28 2:57 Daniel R. Kegel
2001-06-29 8:19 ` Christopher Smith
2001-06-29 9:29 ` Dan Kegel
2001-06-29 18:46 ` Dan Kegel
2001-07-02 22:33 ` Christopher Smith
2001-06-28 3:04 Daniel R. Kegel
2001-06-28 14:46 ` Jamie Lokier
[not found] <fa.d69j5vv.ej8irj@ifi.uio.no>
[not found] ` <fa.h2rpibv.87m5bp@ifi.uio.no>
2001-06-28 14:59 ` Dan Maas
2001-06-28 15:21 ` Alan Cox
2001-06-29 8:26 ` Christopher Smith
2001-06-29 11:56 ` Chris Wedgwood
2001-06-30 10:02 ` Jan Hudec
2001-06-28 20:11 Daniel R. Kegel
2001-06-29 8:31 ` Christopher Smith
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