Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!lll-winken!uunet!pyrdc!isi!bills
From: bills@isi.UUCP (Bill Stratton)
Newsgroups: comp.windows.x
Subject: Xserver wanted which supports multiple prioritized threads
Message-ID: <396@isi.UUCP>
Date: 5 May 89 20:31:04 GMT
Organization: Integral Systems, Inc., Lanham MD
Lines: 29

Hi there -

     Does anyone know of an X.11 server implementation that supports
prioritized multiple threads of execution?  Specifically, I'm looking
for a server that:

     1)  allows you to associate a priority with a connection,

     2)  services high priority connections before lower priority 
         connections, and

     3)  preempts request servicing from a low priority connection
         when a complete request is received from a higher priority
         connection.

     I am currently trying to integrate X.11 displays into real-
time systems for NASA;  these displays will include graphical
simulations of strip chart recorders which must be updated
synchronous to satellite telemetry.  More importantly, user input
must be given priority over display updates;  it is unacceptable to 
make the user wait in satellite control applications.

     Any information would be greatly appreciated.

                                          Bill Stratton
                                          Integral Systems, Inc.
                                          5000A Philadelphia Way
                                          Lanham, MD  20706
                                          301-497-2414