Re: [Discuss-gnuradio] Bug in GR runtime: Messages do not restart after reconfiguration

Hi Eugene,

I haven't noticed whether you've seen any reaction – in case you haven't: It'd be a shame if this was lost!
Could you please add an issue on the GNU Radio Github issue tracker?

Best regards,
Marcus

On 09/21/2016 05:57 PM, Eugene Grayver wrote:

Hello,

I found a bug in the GR runtime.  Here's a simple script to demonstrate it.

#################################################

from gnuradio import gr, blocks 

import pmt

import time

class child(gr.hier_block2):

    def __init__(self):

        super(child, self).__init__('child',

                                    gr.io_signature(0,0, gr.sizeof_char),

                                    gr.io_signature(0,0, gr.sizeof_char))

        

        src = blocks.message_strobe(pmt.intern('ABCD'), 1000)

        snk = blocks.message_debug()

        self.msg_connect(src, 'strobe', snk, 'print')

class parent(gr.top_block):

    def __init__(self):

        super(parent, self).__init__()

        

        self.blank = child()

        self.connect(self.blank)

    

    def reconfig(self):

        self.lock()

        self.disconnect(self.blank)

        self.dut = child()

        self.connect(self.dut)

        self.unlock()

                

print "Using GR version", gr.version()

dut = parent()

dut.start()

print "Created parent"

time.sleep(5)

print "About to reconfig"

dut.reconfig()

print "Reconfigured"

time.sleep(5)

print "Exiting"

dut.stop()

dut.wait()

#########################################

Here's the output that shows that messages stop after reconfiguration.  I was relying on both features for my architecture...  Any suggestions/hot fix?

Using GR version v3.7.10-44-g124c641c

Created parent

******* MESSAGE DEBUG PRINT ********

ABCD

************************************

******* MESSAGE DEBUG PRINT ********

ABCD

************************************

******* MESSAGE DEBUG PRINT ********

ABCD

************************************

******* MESSAGE DEBUG PRINT ********

ABCD

************************************

******* MESSAGE DEBUG PRINT ********

ABCD

************************************

About to reconfig

Reconfigured

Exiting

________________________

Eugene Grayver, Ph.D.
Aerospace Corp., Sr. Eng. Spec.
Tel: 310.336.1274
________________________

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