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OK, I've redone the changes by using a wsevent_inject function that takes a
set of events rather than only one.  It either inserts them all or none of =
them.

Please see the attached patch.



On 2/6/06, Julio M. Merino Vidal <jmmv84@gmail.com> wrote:
>
> El 06/02/2006, a las 13:59, Martin Husemann escribi=F3:
>
> > On Mon, Feb 06, 2006 at 01:31:00PM +0100, Julio M. Merino Vidal wrote:
> >> I didn't do this because, some times, you want to inject more than
> >> one
> >> event at once (strictly speaking, only the code I added yesterday has
> >> this behavior... but am now thinking that the event processing
> >> code in
> >> wsmouse could also use this to do everything atomically).  In such
> >> case,
> >> you'd be checking first if there is room for two elements and
> >> then, each
> >> inject could redo the check to see if there is room for one element.
> >
> > Well, that sounds ok to me (we are talking about mouse/keyboard events
> > here, not network packets - so duplicating a simple check now and then
> > is not that bad).
> >
> > But the obvious other solution (no idea how handy that gets for the
> > callers
> > you have in mind): allow multiple events being passed to the
> > _inject function
> > in a single call.
>
> This is a good idea too, and it may be better for what I have in mind
> because I'd locally construct all the events and then simply call
> the function to add them at once.  Something like:
>
> struct wscons_event evt[N];
> ... fill evt with up to N events ...  (see below)
> error =3D wsevent_inject(evar, evt, N);
> if (error !=3D 0)
>         queue is full
>
> But this makes me think how to deal with the timestamps attached to
> the events.  The first possibility is to generate them while
> constructing each event.  In this case, I'd add an extra function
> wscons_event_init(*event, type, value) so that the timestamps were
> hidden from the caller.
>
> The other possibility is to leave the timestamp initialization to
> wsevent_inject, which could then mark all events with the same
> timestamp.  They happen so close in time that it couldn't make a
> difference, could it?
>
> Cheers,
>
> PS: Isn't 'wsevent' a misfortunate name for a queue?  It makes me
> think of a single event rather than a set of them.  Specially
> confusing: wsevent_init vs. wscons_event_init.
>
> --
> Julio M. Merino Vidal <jmmv84@gmail.com>
> The Julipedia - http://julipedia.blogspot.com/
>
>
>


--
Julio M. Merino Vidal <jmmv84@gmail.com>
The Julipedia - http://julipedia.blogspot.com/

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