Path: utzoo!attcan!uunet!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!CS.BROWN.EDU!jb
From: jb@CS.BROWN.EDU
Newsgroups: comp.sys.encore
Subject: Re: X11 and encore multimax
Message-ID: <9001121535.AA11718@snark.cs.brown.edu>
Date: 12 Jan 90 15:35:55 GMT
References: <2525@minyos.xx.rmit.oz>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
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I've been using X11 on the multimax (UMAX 4.2) for quite a while.  There
are some bugs being mentioned on the X mailing lists about version (bug)
incompatibilities that I see at times, but things work fine.

Now for the bad news as far as you are concerned.  I'm not trying to use
X11 with any parallel code.  There are several problems in this area.
First, much of X11 is not reentrant and dies horribly if you try to have
multiple threads.  A master's student at Brown University tried to get
a version working with EPT (Brown Threads).  Somethings worked fairly
well, but others didn't.  The basic library worked fine with some
synchronization added, but the tool kits died because they assumed that
they knew the state of the window which was not true.

				Jim