On 09/29/2013 09:27 PM, Mark Cottrell wrote: > I am working with gnuradio 3.7.2git-28-g639e154d and I have a > hierarchical block with a message output that I have been using as part > of a larger flowgraph. Yesterday I found that whenever I call > msg_disconnect on the top block with the hier block as the source, I get > an error logged about it having no subscribers. I verified this by > printing out the subscribers in calls to message_port_sub and > message_port_unsub. > > It seems that when you call msg_connect, the call to message_port_sub is > not made until the flowgraph has been flattened, so the subscription > does not belong to the hier block, it belongs to the block inside the > hier block that has the message output. However, when you call > msg_disconnect, it simply attempts to call message_port_unsub on on the > hier block, which fails, as the hier block has no subscriptions. > > To get around this, I simply commented out the call to > message_port_unsub in msg_disconnect, but this isn't ideal and won't fix > the problem in all cases. > > So my question is, is this a bug? If so, is it known about, and if not > can an issue please be raised to track it?
(Sorry for the delay in getting to this.) This indeed sounds like a bug. Can you create a ticket for this on the gnuradio.org website, and attach a script that creates the error for you? -- Johnathan Corgan, Corgan Labs SDR Training and Development Services http://corganlabs.com
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