[Twisted-Python] catching twisted pyqt segmentation fault

[Kevin Mcintyre]

Thanks glyph - really appreciate all the times you've answered my questions!

QtWebEngineView is running a subprocess.

/home/ubuntu/Qt5.8.0/5.8/gcc_64/libexec/QtWebEngineProcess --type=renderer
--disable-accelerated-video-decode --disable-gpu-memory-buffer-video-frames
--enable-threaded-compositing --use-gl=desktop --disable-webrtc-hw-encoding
--primordial-pipe-token=032B94B57A61DAE34BD0F90551F9ABB6 --lang=en-US
--enable-pinch --num-raster-threads=2 --content-image-texture-target=3553

QT can sometimes be helpful, but bug resolution can take a while.

Any suggestions outside of twisted for detecting segfaults?  I'm thinking
just to monitor /var/log/syslog





On Sat, Feb 25, 2017 at 11:59 PM, Glyph Lefkowitz <glyph at twistedmatrix.com>
wrote:

>
> > On Feb 25, 2017, at 4:41 PM, Kevin Mcintyre <kebin70 at gmail.com> wrote:
> >
> > I have a long running twisted pyqt process which occasionally throws a
> Received signal 11.
> >
> > I believe it's in the underlying QtWebEngineView since the twisted
> process continues to run.  Whatever the reason I would like to figure out a
> way to catch this and stop the reactor either in process, or by another
> process monitor.  Any suggestions either twisted or otherwise would be
> greatly appreciated.
>
> Presumably the QtWebEngineView is running a subprocess, then?  This is
> really a Qt question rather than a Twisted question, because the
> QtWebEngineView should be emitting some kind of signal when its rendering
> process crashes.  (If it doesn't I imagine you're just out of luck here and
> you should report a bug to the Qt developers...)
>
> -glyph
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