From: Nurdin Premji <npremji@redhat.com>
To: Mark Wielaard <mark@klomp.org>, cagney@redhat.com, frysk@sourceware.org
Subject: Re: frysk-core/frysk/proc LinuxTask.java TestProcS ...
Date: Wed, 11 Oct 2006 21:39:00 -0000 [thread overview]
Message-ID: <1160602879.2886.4.camel@tow.toronto.redhat.com> (raw)
In-Reply-To: <1160601989.3025.25.camel@dijkstra.wildebeest.org>
> > Nurden, I would greatly expand the comment though, make it more blunt,
> > and prefix with XXX so we know its bad; and reference the frysk bug
> > number; and post it here :-)
/*
* XXX: Linux kernel has a 'feature' that if a process is already
* stopped and ptrace requests that it be stopped (again) in order to
* attach to it, the signal (SIGCHLD) notifying frysk of the attach's
* pending waitpid event isn't generated.
*/
/*
* XXX: This line sends another signal to frysk notifying about the
* attach's pending waitpid regardless of whether the task is running or
* stopped. This avoids hangs on attaching to a stopped process. Bug
* 3316.
*/
Here is my understanding of what the problem is and what I've done.
(Okay so the technical parts have been stolen from cagney's explanation)
next prev parent reply other threads:[~2006-10-11 21:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20061011195727.26918.qmail@sourceware.org>
2006-10-11 20:13 ` Mark Wielaard
2006-10-11 20:57 ` Andrew Cagney
2006-10-11 21:26 ` Mark Wielaard
2006-10-11 21:39 ` Nurdin Premji [this message]
2006-10-11 22:33 ` Andrew Cagney
2006-10-12 9:17 ` Mark Wielaard
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