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From: bzs@BU-CS.BU.EDU (Barry Shein)
Newsgroups: comp.windows.x
Subject: Applications Hanging? Does XLine work?
Message-ID: <8706040216.AA08131@bu-cs.BU.EDU>
Date: Wed, 3-Jun-87 22:16:42 EDT
Article-I.D.: bu-cs.8706040216.AA08131
Posted: Wed Jun  3 22:16:42 1987
Date-Received: Sun, 7-Jun-87 05:35:55 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
Lines: 27


Version: V10R4
System: Sun3/3.0

When I resize a window created by XCreateTerm() to be largish (not the
whole screen, maybe 2/3) using the uwm resize menu choice the whole
thing will repeatedly hang, no mouse tracking etc. Updating the window
involves drawing many small windows (around 200.) The windows get mostly
drawn when it hangs.

I get on another terminal and kill -QUIT (just before the core dump
the window update finishes as I expected, like the buffers finally get
flushed.) Inspecting the core file it seems to be in write() called
from _XFlush() called from XNextEvent().

Anyone know what's causing this? I'm looking but it all seems ok, the
only thing that comes to mind is that the buffer is full and we've
entered some sort of deadlock with the server, but that's just a wild
guess.

I'll keep looking, just hoping someone knows the fix or where to look.

On another note, trying to do the typical XLine() using GXxor to track
a line (eg. a crosshair) in a window doesn't work. It seems to simply
do a GXcopy and the screen just fills with black lines. Is it me?

	-Barry Shein, Boston University