Thread (5 messages) 5 messages, 2 authors, 2011-05-23

Re: select() on /dev/input/eventX not level-triggered?

From: Pavel Machek <hidden>
Date: 2011-05-23 21:20:23
Also in: lkml

On Mon 2011-05-23 13:49:10, Dmitry Torokhov wrote:
On Mon, May 23, 2011 at 10:06:22PM +0200, Pavel Machek wrote:
quoted
On Mon 2011-05-23 11:13:12, Dmitry Torokhov wrote:
quoted
On Fri, May 20, 2011 at 01:50:51AM +0200, Pavel Machek wrote:
Difference was I'm not using non-blocking read().
Does not matter.
quoted
It is unusual but
should work AFAICT. Just read one packet when select shows its ready;
if there's more than one, don't loop around read, but rely on select
returning immediately.

I did verify it on strace, so it should not  be python artefact.
It is artefact of your program, you buffering your input. Use:

	file = open("/dev/input/event3", "rb", 0)
Oops, yes, you are right, that solves it. Thanks... and sorry for the
noise.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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