From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1Lrwgz-0003SJ-H5
	for qemu-devel@nongnu.org; Thu, 09 Apr 2009 12:01:29 -0400
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1Lrwgu-0003Qb-Mb
	for qemu-devel@nongnu.org; Thu, 09 Apr 2009 12:01:28 -0400
Received: from [199.232.76.173] (port=44405 helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1Lrwgt-0003QM-UW
	for qemu-devel@nongnu.org; Thu, 09 Apr 2009 12:01:24 -0400
Received: from mail2.shareable.org ([80.68.89.115]:50694)
	by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32)
	(Exim 4.60) (envelope-from <jamie@shareable.org>) id 1Lrwgt-0004UF-4P
	for qemu-devel@nongnu.org; Thu, 09 Apr 2009 12:01:23 -0400
Date: Thu, 9 Apr 2009 17:01:19 +0100
From: Jamie Lokier <jamie@shareable.org>
Subject: Re: [Qemu-devel] [PATCH 1/6] Allow multiple monitor devices (v2)
Message-ID: <20090409160119.GB14196@shareable.org>
References: <49DDF807.1050707@us.ibm.com> <49DDFAD5.7060808@redhat.com>
	<49DDFC5C.4080504@us.ibm.com> <49DE0042.9050103@redhat.com>
	<49DE0271.8090103@us.ibm.com> <49DE05F2.5060304@redhat.com>
	<49DE0673.3070501@us.ibm.com> <49DE081D.1030702@redhat.com>
	<49DE0CF2.3060307@us.ibm.com> <49DE1029.3030909@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <49DE1029.3030909@redhat.com>
Reply-To: qemu-devel@nongnu.org
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: qemu-devel@nongnu.org
Cc: libvir-list@redhat.com, Anthony Liguori <aliguori@us.ibm.com>, Jan Kiszka <jan.kiszka@web.de>, Hollis Blanchard <hollisb@us.ibm.com>

Avi Kivity wrote:
> >I think the thing that is missing is that the 'wait' command does not 
> >have to be part of the non-human mode.  In non-human mode, you are 
> >always doing an implicit wait.
> 
> I think 'wait' is unusable for humans.  If I want qemu to tell me 
> something happened, it's enough to enable notifications.  There's no 
> need to tell it to wait every time something happens.  That's poll(2), 
> there's no poll(1).

For some purposes I'd prefer 'wait' on a separate monitor.  For the
same reason that we sometimes redirect the output of background shell
commands to a file :-)

Solution: 'wait -background' for those async notifications.

Or simply 'notify -background event-type', no need for a wait command
if you give that option.

Or conversely 'notify -channel 1 event-type' to direct the events to
channel 1, and 'wait -channel 1' to show events on that channel.

-- Jamie