🚀 go-pugleaf

We have been experiencing a problem with the current release of epoch,
4.0 Patchlevel 2, running on a SUN IPC with SunOS 4.1.1.  

When using an IBM PC clone running an X emulator there is a limited
number of sockets available.  If an attempt is made to start an epoch client
when this limit is exceeded, epoch fails to initialise correctly and
goes into a state continuously using a large amount of CPU time.
This rogue epoch is not killed when the user logs off and remains
until a 'kill' signal is explicitly sent to it.

After some investigation the problem appears to be related to the
error handling in routine x_term_init() before calling
x_init_display().  The default IOErrorHandler is set to XIgnoreError;
consequently when epoch fails to make a successful connection it
appears to ignore the error (!) and goes into the compute loop.  As a
work around to the problem I have moved the line 

XSetIOErrorHandler (handler); 

to be immediately after the line

x_init_display ();

I am unsure if this is a sensible fix or indeed why the
IOErrorHandling is set to ignore system errors.  I would be grateful
if somebody who knows more about the workings of X and its interaction
with epoch would let me know.


Philip Ross    email: ross%athena@uk.ac.aberdeen
                  or  p.ross@uk.ac.aberdeen

Computer Officer,
University of Aberdeen,
Scotland.



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| Philip Ross, Computer Officer | email: ross%athena@UK.AC.ABERDEEN          |
| Dept. Bio-Medical Physics     |    or  p.ross@uk.ac.aberdeen               |
| University of Aberdeen        |                                            |
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| 3 is not equal to 2, not even for large values of 2.                       |
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