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From: hall@polya.Stanford.EDU (Keith A. Hall)
Newsgroups: comp.windows.x
Subject: Is XLib reentrant?
Message-ID: <8712@polya.Stanford.EDU>
Date: 23 Apr 89 22:55:17 GMT
Sender: Keith A. Hall <hall@polya.Stanford.EDU>
Organization: Stanford University
Lines: 14

I have multiple threads executing within a single Unix process.
The threads are (preemptively) time-sliced.  I have linked in the
necessary XLib routines.  My question is whether or not the XLib
routines are protected by monitors (implemented by busy-wait?), in
which case I can assume that a call to, say, XNextEvent can be
interrupted by another process which itself calls XNextEvent.

If XLib doesn't provide this kind of protection then I suppose I must
put a veneer atop each of the XLib routines which my program uses...

Any advice is appreciated.  Thank you.

Keith Hall
hall@eclipse.stanford.edu