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Date: Wed, 22 Sep 2010 19:18:00 -0000
From: Jan Kratochvil <jan.kratochvil@redhat.com>
To: Tom Tromey <tromey@redhat.com>
Cc: Oleg Nesterov <oleg@redhat.com>, archer@sourceware.org,
        utrace-devel@redhat.com
Subject: Re: gdbstub initial code, v11
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On Wed, 22 Sep 2010 21:09:12 +0200, Tom Tromey wrote:
> I think it would be good to implement a feature that shows how this
> approach is an improvement over the current state of gdb+ptrace or
> gdb+gdbserver.
> 
> Exactly what feature this should be... I don't know :-)
> I would imagine something performance-related.

I would bet on a massive threads creating/deleting testcase signalling tasks
around, together with watchpoints.  There are races in the linux-nat code and
IIRC even gdbserver code.

OTOH if one tries hard one can probably manage one day to fix all the corner
cases in the ptrace based linux-nat and gdbserver.


Regards,
Jan