Re: [Qemu-devel] [RFC 0/6] monitor: allow per-monitor thread

[Dr. David Alan Gilbert]

* Fam Zheng (address@hidden) wrote:
> On Mon, 08/21 11:17, Dr. David Alan Gilbert wrote:
> > From previous discussions we've had, one suggestion was to have some
> > type of 'safe' command; once issued in a thread, the monitor thread
> > would only allow other lock-free commands to be issued; it stops any
> > accidents of them issuing unsafe commands.
> 
> I'm not sure I understand. If the 'safe' command is not issued, users are
> allowed to do unsafe things? What are the possible consequences of those
> 'unsafe' commands? Errors/hangs/crashes?

With or without the safe command no command could cause a crash.
However, a command might try and take the bql and block waiting for it.
With the 'safe' command only those commands that were declared as
not-wanting the lock would be allowed.

Dave

> Fam
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK