X server programming question

[Roger Oberholtzer]

On Mon, 2006-09-11 at 21:56 +0800, Man-wai CHANG wrote:
> > 
> > Nope. Just to use it as best I can. I want to tie an X event to the PC
> > clock, not just a relative time in the X server's notion of time. My
> > application is not network based in respect to the GUI. The keyboard,
> > display and X server are all on the local machine.
> 
> Asking for an absolute global clock for a distributed system (with each
> node having their own clock) sounds like troubles... :)  Maybe I
> mis-understood your intention.

X is indeed designed to run on distributed systems. But it is mostly
used to run a keyboard/mouse/display on the same single computer. That
is where I want to know this information.

A key pressed on a USB device gets a time stamp (gettimeofday) from the
kernel module that detected it. I bet the kernel PS/2 keyboard driver
that X talks to for the PS/2 key presses provides the same. It is just
that X seems to drop these and replace them with its own relative time
stamp. That is fine as an additional bit of info. But I want the
original time stamp  as well. Both are, IIRC, long integers.

-- 
Roger Oberholtzer

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