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Conference bulova::decw_jan-89_to_nov-90

Title:DECWINDOWS 26-JAN-89 to 29-NOV-90
Notice:See 1639.0 for VMS V5.3 kit; 2043.0 for 5.4 IFT kit
Moderator:STAR::VATNE
Created:Mon Oct 30 1989
Last Modified:Mon Dec 31 1990
Last Successful Update:Fri Jun 06 1997
Number of topics:3726
Total number of notes:19516

1680.0. "X-protocol modeling, where to get X info??" by YF23::MOSER () Mon Nov 06 1989 14:46

I am thinking about modeling decwindows client/server interactions at the
X-protocol exchange level as part of another project.   I need to know how the
events, replies, and requests interact and how the buffering of these take
place in the server and client nodes.  It might also be neccessary to put some
kind of system resource cost on each of these transactions.  I am not to
terribly sure if this is feasible in any reasonable time frame or if it has
perhaps been done before.  Where could I go get the kind of information I will
need for this??  Any insight would be appreciated...

Thanks,

Mike Moser
T.RTitleUserPersonal
Name		DateLines
1680.1Some ideasRAINBO::HARRISRepeal the law of gravity: Juggle!Tue Nov 07 1989 11:4316
    You might start with the VMS DECwindows Transport Manual (aa-pabwa-te)
    which describs how to write your own transport (I think it is available
    with the internal field test kits for VMS V5.3).  This is the section of
    code between the network and the xlib or server (depending on which hat
    your wearing at the time).  There is also example code
    DECW$EXAMPLES:XPORT_EXAMPLE.B32.  This code actually handles the
    X-message.
    
    Now this doesn't really tell you the interactions, but it does show how
    the I/O is performed and set up for full async operation.
    
    Then I think XLiddy may show you what is actually happening, but since
    I haven't actually used it, this is only speculation.
    
    I'm sure you can get better ideas from experienced users and
    developers.
1680.2KOBAL::VANNOYJake VanNoyTue Nov 07 1989 18:552
Talk to Dinesh Mirchandani in VMS performance.
1680.3Check out XLIDDY/XWOODWARD source DUGGAN::GABRIELBo knows Motif ??Wed Nov 08 1989 12:1512
    
    I think both XLIDDY.C and XWOODWARD.C will help out.  Do a 
    dir/title=xliddy on either this conference or the old one
    for pointers to the source.  Also, O'Reilly and Associates
    have a book out titled the X Protocol and it is filled 
    with information about what types of messages are going
    back and forth between the server and client.
    
    Have fun,
    
    /Joe