Hanging on top_block.stop

GNU Radio
1

Hi all,

The following script hangs for me about 1 time in 10 on the call to
top_block.stop.
Drilling in a bit, it appears to get stuck on a call to ‘interrupt’ of
a boost::thread instance on line 91 of gruel/src/lib/thread_group.cc.
Has anyone else had this problem?

Cheers,
Ben

import time
from gnuradio import gr

def execute():
tb = gr.top_block()
src = gr.vector_source_c([1], True)
snk = gr.null_sink(gr.sizeof_gr_complex)
tb.connect(src, snk)
tb.start()
time.sleep(0.01)
print(“About to Stop*”)
tb.stop()
print(“Stopped*”)

if name == “main”:
execute()

2

On Tue, Aug 7, 2012 at 10:31 AM, Ben R. [email protected] wrote:

print("**********About to Stop***********")
tb.stop()
print("**********Stopped***********")

if name == “main”:
execute()

Also, if I write the same logic in straight C++ it works fine.

3

Upgrading to boost 1.48 fixed the problem.
Thanks again,
Ben

4

You don’t say what OS or version of boost you are using, but it sounds
like
an old problem. Try looking at
http://lists.gnu.org/archive/html/discuss-gnuradio/2011-12/msg00098.html
in
the mailing list archives.

– Don W.

----- Original Message -----
From: “Ben R.” [email protected]
To: “discuss-gnuradio Discussion Group” [email protected]
Sent: Tuesday, August 07, 2012 1:31 PM
Subject: [Discuss-gnuradio] hanging on top_block.stop