Re: [Qemu-devel] [PULL 08/51] chardev: introduce qemu_chr_timeout_add_ms()

["Daniel P. Berrange" <berrange@redhat.com>]

On Tue, Jan 16, 2018 at 03:16:50PM +0100, Paolo Bonzini wrote:
> From: Peter Xu <peterx@redhat.com>
> 
> It's a replacement of g_timeout_add[_seconds]() for chardevs.  Chardevs
> now can have dedicated gcontext, we should always bind chardev tasks
> onto those gcontext rather than the default main context.  Since there
> are quite a few of g_timeout_add[_seconds]() callers, a new function
> qemu_chr_timeout_add_ms() is introduced.

FYI the point of using g_timeout_add_seconds() is that it allow the
glib event loop to be more efficient. It ensures that all timers
which second granularity are dispatched on the same iteration of
the main loop. IOW, if you have 10 timers registered with
g_timeout_add_seconds() the main loop wakes up once a second and
runs all 10 of them. If you have 10 timers registered with g_timeout_add
the main loop wakes up 10 times a second, at a different time for each
timer.


Regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|