Re: [Qemu-devel] [PATCH] char: do not use atexit cleanup handler

[Daniel P. Berrange]

On Mon, Jul 04, 2016 at 06:46:47PM +0200, Paolo Bonzini wrote:
> 
> 
> On 04/07/2016 18:31, Daniel P. Berrange wrote:
> >> > Instead of using a atexit() handler, only run the chardev cleanup as
> >> > initially proposed at the end of main(), where there are less chances
> >> > (hic) of conflicts or other races.
> > This doesn't really seem all that much safer. There's still plenty of
> > chance that threads are running in the background at the end of the
> > main() method, so plenty of scope for the qemu_chr_cleanup() call to
> > cause threads to segv by destroying the chardevs they're using behind
> > their back.
> 
> At this point you have stopped all CPUs and block devices.  There is not
> much else that is going on in QEMU at all, at this point.  The solution
> would be to stop those threads.

What about graphics threads ? In particular I'd be thinking of spice
which uses threads and chardevs.

Regards,
Daniel
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