[ros-users] weird node crash...

Ugo Cupcic ugo at shadowrobot.com
Tue Oct 12 12:41:27 UTC 2010


I found the problem. If you overload the __del__(self) function in your
class, then something bad happens when closing the node...



On 12/10/10 12:02, Ugo Cupcic wrote:
>  Hi all,
> I have a really weird behaviour in rospy.
> If I create a publisher to an existing topic of a custom C++ node, run
> rospy.spin in a separate node, then do nothing and close the python
> node, the C++ node crashes:
> [shadowhand-5] process has died [pid 5903, exit code -11].
> The simple code in python can be found here:
> http://pastebin.com/xwZiKn3R
> If I replace the publisher by a subscriber then my C++ node doesn't
> crash. What's really weird is that my C++ node seems to be pretty stable
> (I often kept it running for one day without any trouble). When I run
> the C++ node in gdb then it doesn't crash...
> Is there a call made to the node when a publisher to this node is deleted?
> Any help greatly appreciated.
> Cheers,
> Ugo

Ugo Cupcic         |  Shadow Robot Company | ugo at shadowrobot.com
Software Engineer  |    251 Liverpool Road |
need a Hand?       |    London  N1 1LX     | +44 20 7700 2487
http://www.shadowrobot.com/hand/              @shadowrobot

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