This is another question, unrelated to the one I asked yesterday about GNU
Radio on the Mac. At work I run GNU Radio 3.7 on Linux, CentOS 7. (I know this
is old; our customer seems allergic to change. For the time being, I'm stuck
with it.)
I'm testing an OOT Python block, a source for a signal with complex type. This
block includes a queue (queue.Queue, Python 2.7) where it occasionally puts
objects. My testing code gets the objects off the queue. The testing code gets
10 objects off the queue with blocking 'get' calls, successfully, then it does
some very simple tests. In the course of these tests, the test code calls one
of the block's getter functions, just
def amplitude(self):
return self._amplitude
At this point, GNU Radio hangs. A print statement in the getter function prints
self._amplitude correctly, but then a print statement in the test code,
directly after the call to 'amplitude', never prints. Print statements in the
block's 'work' function show the block's thread entering 'work' and leaving
'work', but 'work' never executes again.
The flow graph I'm using in the test code is very simple:
My_source_block -> throttle -> GR's debug tag block
I don't know how to debug this. If the block's thread dies for some reason,
does GNU Radio just quit silently? Perhaps the block raises an exception and
the block's thread swallows it and dies some time later. I don't know how to
find out. I can't imagine why a call to 'amplitude' from the test code would
cause a problem, particularly when a print statement put in 'amplitude' prints
the correct value of 'self._amplitude' successfully.
I'm out of ideas. Thoughts?
Thanks,
-Rod
________________________________
This message is intended only for the use of the individual or entity to which
it is addressed and may contain ZETA Associates confidential or proprietary
information. If you are not the intended recipient, any use, dissemination, or
distribution of this communication is prohibited. If you have received this
communication in error, please notify the sender and delete all copies.
