I'm trying to use gr.msg_queue.delete_head_nowait() in a python example,
and if I use delete_head_nowait I get this error:
python: /usr/include/boost/smart_ptr/shared_ptr.hpp:418: T*
boost::shared_ptr< <template-parameter-1-1> >::operator->() const [with T =
gr_message]: Assertion `px != 0' failed.
Aborted
The blocking version of delete_head works fine.
Here's the code:
while self.keep_running:
msg = self.rcvd_pktq.delete_head_nowait()
if msg:
result = packet_utils2.unmake_packet(msg.to_string(),
int(msg.arg1()))
else:
if len(packet_utils2.uncoded) > 0:
result = packet_utils2.unmake_packet(None)
if result: #make sure it's not null
ok, payload = result
m = msg.to_string()
print 'payload"', m
--
Colleen Josephson
http://www.cjosephson.net
Dept. of Electrical Engineering and Computer Science
Massachusetts Institute of Technology
Class of 2013
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