[RFC][PATCH] dix: Skip PropertyNotify events if the property value didn't change

Keith Packard keith.packard at intel.com
Mon Sep 20 08:47:59 PDT 2010


On Mon, 20 Sep 2010 08:35:11 -0700, "ville.syrjala at nokia.com" <ville.syrjala at nokia.com> wrote:
> From: Ville Syrjälä <ville.syrjala at nokia.com>
> 
> Avoid sending PropertyNotify events with the same value in case the
> value didn't actually change. Avoids waking up the clients needlessly.

getting timestamps fr
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at nokia.com>
> ---
> I'm not sure if this kind of optimization is always legal or if some
> specification says that the event must be sent even if the value doesn't
> change. Hence the RFC.

Nope, any ChangeProperty request is required to generate a PropetyNotify
event.

-- 
keith.packard at intel.com
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