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<p class=MsoNormal>Hello Guys,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have a situation which I’ve seen arise recently
within an application built in python using the dbus gobject mainloop whereby
when uncaught exceptions occur within the application it doesn’t crash
gracefully and I get sprawls or logging data spat back to the command line and
the application continues to run.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I’m looking for a sure fire way that any uncaught exceptions
which occur in the application will cause the mainloop to quit and the
application to stop running properly, I can then have the system relaunch it.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I’m thinking perhaps something like this might work:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span style='font-size:
10.0pt;font-family:"Courier New";color:silver'># Attempt to run the mainloop.</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span style='font-size:
10.0pt;font-family:"Courier New";color:blue'>try</span><span style='font-size:
10.0pt;font-family:"Courier New";color:black'>:</span><span style='font-size:
10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:silver'># Call for the
mainloop to run.</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> main_loop.run()</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span style='font-size:
10.0pt;font-family:"Courier New";color:silver'># Catch any exceptions which may
occur.</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span style='font-size:
10.0pt;font-family:"Courier New";color:blue'>except</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> Exception, e:</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:silver'># An exception
occurred within the application.</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:silver'># Log the
exception which has occurred.</span><span style='font-size:10.0pt;font-family:
"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> <i>self</i>.__logger.critical(</span><i><span
style='font-size:10.0pt;font-family:"Courier New";color:#00AA00'>"FATAL
EXCEPTION OCCURRED: %s"</span></i><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> % str(e))</span><span style='font-size:
10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:silver'># Quit the
mainloop.</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";
color:black'> main_loop.quit()<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>This I would have thought will
catch any exceptions which aren’t caught at a lower level, log what has
happened and then close the application down.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>Is this the correct way to handle
this? I’d a really appreciate your advice and experience.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>Cheers all,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>Heston</span><o:p></o:p></p>
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