[unclassified] Re: [x11] Application persistency even when DISPLAY connection is lost

John Klingler john at jupiter.com
Sat Mar 3 13:19:44 PST 2007

Carsten Haitzler (The Rasterman) wrote:

>On Fri, 02 Mar 2007 16:48:23 -0800 John Klingler <john at jupiter.com> babbled:
>>Unfortunately, Xlib exits when a display connection is broken.
>>In order to restore an application that has exited when the
>>connection can be re-established, it is necessary to have a
>>parent process without a display connection to detect when the
>>application has exited and restart it. I call this a "heartbeat
>>monitor" and have implemented these on commercial applications.
>actuallt that's incorrect. that is only the DEFAULT behavior. you can set an
>xlib io handler that will stop this from happening and then re-establish the
>connection. no need for a parent process, shared memory etc.
Really? I was never able to get my io handler to do that. Just how do 
you go about it? ;-)


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