[Qemu-devel] Re: [5431] Allow the monitor to be suspended during non-blocking op

[Jan Kiszka <jan.kiszka@web.de>]

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Anthony Liguori wrote:
> Revision: 5431
>           http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5431
> Author:   aliguori
> Date:     2008-10-06 13:52:44 +0000 (Mon, 06 Oct 2008)
> 
> Log Message:
> -----------
> Allow the monitor to be suspended during non-blocking op
> 
> Live migration happens in the background, but it is useful to make the monitor
> command appear as if it's blocking.  This allows a management tool to
> immediately know when the live migration has completed without having to poll
> the migration status.
> 
> This patch allows the monitor to be suspended from a monitor callback which
> will prevent new monitor commands from being executed.

This is not true. The current code just prevents the command prompt from
being printed. Yeah, this subsystem is hairy. :)

I'm currently reworking the whole monitor infrastructure and could
either include a fix in my series to make this true suspension - or name
the interface after its effect: monitor_enable/disable_prompt().

So, what is the actually desired behavior?

Jan


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