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X-Authentication-Warning: eos.vss.fsi.com: ford owned process doing -bs
Date: Wed, 8 Oct 2003 15:52:19 -0500 (CDT)
From: Brian Ford <ford AT vss DOT fsi DOT com>
X-X-Sender: ford AT eos
To: cygwin AT cygwin DOT com
Subject: Re: 1.5.5: strace -p broken?
In-Reply-To: <Pine.GSO.4.56.0310081639240.15176@slinky.cs.nyu.edu>
Message-ID: <Pine.GSO.4.56.0310081550310.2767@eos>
References: <Pine DOT GSO DOT 4 DOT 56 DOT 0310021412280 DOT 12522 AT eos>
 <Pine DOT GSO DOT 4 DOT 56 DOT 0310081639240 DOT 15176 AT slinky DOT cs DOT nyu DOT edu>
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On Wed, 8 Oct 2003, Igor Pechtchanski wrote:

> On Thu, 2 Oct 2003, Brian Ford wrote:
>
> > I have tried strace -p cygpid on a number of processes with no luck.  It
> > just hangs for a few seconds and exits.  Am I doing something wrong?
> >
> > ford AT fordpc ~
> > $ sleep 100&
> > [4] 374
> >
> > ford AT fordpc ~
> > $ strace -p 374
> >
> > ford AT fordpc ~
> > $ echo $?
> > 5
> >
> > Thanks.
>
> Hmm, yes -- in my case I'm getting a segfault, so it's apparently broken.
> If I have time later this week, I'll build a debugging version of strace
> to see what's going on here.
> 	Igor
>
I'm pretty sure that the segfault happens when accessing the pinfo, I just
don't have a stack trace handy.  I think it was under
cygwin_internal(CW_CYGWINPID_TO_WINDOWSPID) or the like (I'm going from
memory here).

-- 
Brian Ford
Senior Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
Phone: 314-551-8460
Fax:   314-551-8444

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