From: Adam Dinwoodie <Adam.Dinwoodie@metaswitch.com>
To: "cygwin@cygwin.com" <cygwin@cygwin.com>
Subject: RE: Please test snapshots
Date: Fri, 17 Aug 2012 09:38:00 -0000 [thread overview]
Message-ID: <CE9C056E12502146A72FD81290379E9A49601815@ENFIRHMBX1.datcon.co.uk> (raw)
In-Reply-To: <20120816183738.GA16914@ednor.casa.cgf.cx>
Christopher Faylor wrote:
> On Tue, Aug 14, 2012 at 12:48:03PM +0000, Adam Dinwoodie wrote:
>> I'm still using this snapshot (I've had no reason to stop until now), and
>> have hit this issue two out of the last five times running Cygwin ping. The
>> ping process is still visible in Process Explorer after hitting ^C. There's
>> no obvious difference between when ^C terminates the process and when it
>> doesn't.
>
> I managed to duplicate this once a couple of days ago in a mintty/tcsh
> process but I had a very hard time consistently hitting it. So I wrote a
> test case which ran ping repeatedly in a loop under mintty while another
> process killed it. Eventually, I could duplicate the problem in a few
> minutes. There were two problems, one illustrated by the "sigwaitinfo"
> mentioned in another thread and another caused by a race.
I'm seeing this much more regularly than that; it's pretty readily
reproducible for me.
I've found leaving a couple of seconds between starting ping and trying to kill
it, and leaving a couple of seconds between invocations, both help. I've not
tested that thoroughly, though; it might be something to play with for trying
to build a test case, but certainly not something I'd rely on as a symptom for
debugging without further verification.
> After making some changes to signal handling, I ran the test case for an
> afternoon without issue.
>
> The current snapshot has these changes.
>
> I'd appreciate feedback on whether or not this fixes this problem.
I'm still seeing exactly the same issue having taken the 20120816 snapshot. If
anything, I've been hitting the problem more.
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next prev parent reply other threads:[~2012-08-17 9:09 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-06 3:53 Christopher Faylor
2012-08-06 5:14 ` Daniel Colascione
2012-08-06 8:59 ` Achim Gratz
2012-08-08 13:04 ` Achim Gratz
2012-08-09 8:07 ` Achim Gratz
2012-08-06 15:31 ` Filipp Gunbin
2012-08-06 23:27 ` Daniel Colascione
2012-08-07 0:39 ` Daniel Colascione
2012-08-07 0:40 ` Daniel Colascione
2012-08-08 22:17 ` Christopher Faylor
2012-08-09 6:35 ` Daniel Colascione
2012-08-09 12:29 ` Achim Gratz
2012-08-09 14:54 ` Christopher Faylor
2012-08-09 15:06 ` Achim Gratz
2012-08-09 14:59 ` Daniel Colascione
2012-08-10 7:15 ` Achim Gratz
2012-08-10 14:36 ` Christopher Faylor
2012-08-10 18:12 ` Achim Gratz
2012-08-10 18:34 ` Christopher Faylor
2012-08-10 19:08 ` Achim Gratz
2012-08-10 20:24 ` Christopher Faylor
2012-08-10 20:37 ` Achim Gratz
2012-08-10 23:31 ` Christopher Faylor
2012-08-14 13:45 ` Adam Dinwoodie
2012-08-16 19:01 ` Christopher Faylor
2012-08-16 19:33 ` Ken Brown
2012-08-16 19:45 ` Christopher Faylor
2012-08-16 20:11 ` Ken Brown
2012-08-17 9:38 ` Adam Dinwoodie [this message]
2012-08-17 14:37 ` Christopher Faylor
2012-08-17 17:46 ` Adam Dinwoodie
2012-08-17 18:08 ` Christopher Faylor
2012-08-17 19:32 ` Achim Gratz
2012-08-17 9:40 ` Achim Gratz
2012-08-17 10:47 ` Achim Gratz
2012-08-14 19:23 ` jojelino
2012-08-14 19:41 ` Corinna Vinschen
2012-08-14 19:42 ` Christopher Faylor
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