This looks like something that was fixed quite a while ago in
https://github.com/gnuradio/gnuradio/pull/3301
Tested on a recent GR, and this doesn't happen. Could you post the
generated code?
On Tue, Nov 22, 2022 at 10:23 PM Jose Ruvalcaba <joruv...@gmail.com> wrote:
> Hello,
>
> I've been noticing an issue popping out everytime I stop running my
> flowgraph and I was wondering if someone had some insight on it. I have a
> flowgraph where a signal source is connected to a probe signal block. This
> block is constantly updating values and are being displayed using the QT
> GUI Label block. However, after running my flowgraph for about 10 minutes I
> get the following error:
>
> *Executing: /usr/bin/python3 -u
> /home/spacerfvm/Documents/GNURadio_3.10_flowgraphs/func_probe_test.py*
>
> *Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use
> QT_QPA_PLATFORM=wayland to run on Wayland anyway.*
>
> *Exception in thread Thread-1 (_amp_probe):*
>
> *Traceback (most recent call last):*
>
> * File
> "/home/spacerfvm/Documents/GNURadio_3.10_flowgraphs/func_probe_test.py",
> line 150, in _amp_probe*
>
> * self.doc.add_next_tick_callback(functools.partial(self.set_amp,val))*
>
> * File "/usr/lib/python3/dist-packages/gnuradio/gr/hier_block2.py", line
> 88, in __getattr__*
>
> * return getattr(self._impl, name)*
>
> *AttributeError: 'gnuradio.gr.gr_python.top_block_pb' object has no
> attribute 'doc'*
>
> *During handling of the above exception, another exception occurred:*
>
> *Traceback (most recent call last):*
>
> * File "/usr/lib/python3.10/threading.py", line 1016, in _bootstrap_inner*
>
> * self.run()*
>
> * File "/usr/lib/python3.10/threading.py", line 953, in run*
>
> * self._target(*self._args, **self._kwargs)*
>
> * File
> "/home/spacerfvm/Documents/GNURadio_3.10_flowgraphs/func_probe_test.py",
> line 152, in _amp_probe*
>
> * self.set_amp(val)*
>
> * File
> "/home/spacerfvm/Documents/GNURadio_3.10_flowgraphs/func_probe_test.py",
> line 182, in set_amp*
>
> * self.set_variable_qtgui_label_0(self.amp)*
>
> * File
> "/home/spacerfvm/Documents/GNURadio_3.10_flowgraphs/func_probe_test.py",
> line 189, in set_variable_qtgui_label_0*
>
> * Qt.QMetaObject.invokeMethod(self._variable_qtgui_label_0_label,
> "setText", Qt.Q_ARG("QString",
> str(self._variable_qtgui_label_0_formatter(self.variable_qtgui_label_0))))*
>
> *RuntimeError: wrapped C/C++ object of type QLabel has been deleted*
>
>
>
> It seems that my issue is related to the QT GUI Label block because when I
> remove it and add say QT GUI Number sink, this issue doesn't appear.
>
> Has anyone experienced this issue? If so, would anyone be able to steer me
> in the direction to fix it? I am currently running on Ubuntu 22.04 and am
> running GNU RADIO 3.10.1.1 which I installed using sudo apt-get install.
> I've also attached the flowgraph I am talking about.
>
> Thanks,
>
> Jose Ruvalcaba
>
