Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!ucsd!ucbvax!bloom-beacon!CRC.SKL.DND.CA!jgraham
From: jgraham@CRC.SKL.DND.CA (Jay Graham)
Newsgroups: comp.windows.x
Subject: XtAddTimeOut() and Timed Interrupts.
Message-ID: <9008231943.AA01202@crc.skl.dnd.ca>
Date: 23 Aug 90 19:43:48 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 26

To any XtAddTimeOut()/Unix experts:

    We are developing an application on 386/ix and will need time
    interrupts in the 10s of milleseconds range, however when using
    XtAddTimeOut() with a 10ms interval we seem to be actually getting
    around a 20ms interval.  We assume that maybe there are communication
    delays that cause the discrepancy.  Obviously since the resolution
    is better than one second, XtAddTimeOut does not use the Unix alarm
    system call.  We would like to know how XtAddTimeOut (or the X server)
    is implemented so that it can get millsecond resolution so that we
    can develop something similar ourselves.

    Our H/W S/W platform is:

       ATT 6386/25
       ISC 386/ix Version 2.0.2 (System V)
       ISC X Window System, Version 1.1   (X11R3)
        

    If anyone can help please email or post.

    Thanks in advance

    Jay Graham                    (jgraham@crc.skl.dnd.ca)
    Software Kinetics, Ltd,
    Ottawa, Ontario, Canada