[Pharo-dev] Random VM crashes

J.F. Rick self at je77.com
Wed Apr 9 09:01:37 EDT 2014

Cool! I am using SVG files so there might be some unicode data being sent
to Cairo buffer. On the other hand, my crash happens randomly, rather than
as a result of a specific repeatable action. It sounds like this would be
more along the lines of a repeatable sequence.

Anyway, I'll update the code and see if it helps. Again, this problem is
difficult to diagnose as the crash only happens every other day. Even if it
doesn't happen all week, it doesn't mean that that was the problem. For
instance, there have been no crashes today, so it makes me think that the
multi-touch support, rather than Athens, is the culprit.



On Wed, Apr 9, 2014 at 2:12 PM, Igor Stasenko <siguctua at gmail.com> wrote:

> On 9 April 2014 13:55, J.F. Rick <self at je77.com> wrote:
>> Hi,
>> when I have one of my multi-touch programs open, Pharo occasionally (read
>> once every few days) just crashes. Ubuntu mentions a failure to report to
>> Ubuntu on the pharovm but I'm not sure how to understand that failure.
>> I thought it might be one of two things: (1) some sort of problem with
>> Athens rendering or (2) some sort of problem with the multi-touch events.
>> Those are really the only things that separate when I'm developing and when
>> I'm testing. It never crashes when I'm developing, which is a much larger
>> percentage of the time. Recently, the crash happened when I was not
>> touching the display. That meant that there would not have been any touch
>> events to process, nor would an Athens render happen. Strange.
>> I'm not sure how to proceed. I've turned off the multi-touch support for
>> the time being to see if it still happens. If so, that would probably
>> exonerate the multi-touch code. Does anyone else have rare random
>> unexplained crashes happening while using Athens? Is there anything I could
>> do to better diagnose the problem. It's fiendish as it happens so rarely
>> and there is no replicable action that causes it to happen.
>> i fixed recently this one:
> https://pharo.fogbugz.com/f/cases/13184/Fix-encoder-for-displaying-high-range-unicode-chars
> could be it?
>> Cheers,
>> Jeff
>> --
>> Jochen "Jeff" Rick, Ph.D.
>> http://www.je77.com/
>> Skype ID: jochenrick
> --
> Best regards,
> Igor Stasenko.

Jochen "Jeff" Rick, Ph.D.
Skype ID: jochenrick
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