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Date: Fri, 02 Sep 2011 17:31:09 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] monitor: Protect outbuf from concurrent
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To: Gerd Hoffmann <kraxel@redhat.com>
Cc: qemu-devel <qemu-devel@nongnu.org>, Luiz Capitulino <lcapitulino@redhat.com>, Marian Krcmarik <mkrcmari@redhat.com>, Alon Levy <alevy@redhat.com>, spice-devel <spice-devel@freedesktop.org>

On 09/02/2011 05:18 PM, Gerd Hoffmann wrote:
>
>> Can you just use a bottom half to defer this work to the I/O thread?
>> Bottom half scheduling has to be signal safe which means it will also be
>> thread safe.
>
> Not that straight forward as I would have to pass arguments to the
> bottom half.

Can you add a variant of qemu_bh_new that accepts a sizeof for the new 
bottom half?  Then the bottom half itself can be passed as the opaque 
and used for the arguments.

Paolo