Re: [Discuss-gnuradio] Suppressing UHD prints

[Koslowski, Sebastian (CEL)]

On 07/06/2015 07:25 PM, Jared Dulmage wrote:
> @Sebastion "Even if ' uhd::msg::register_handler' would be exposed to python, 
> you
> still can't drop-in your own null-handler. Swig doesn't support
> callbacks in the target language (python)."
>
> This seems precisely what I have observed working with my example from my 
> question on 7/2/2015 "message passing: strobe or _post?"  I use a Python 
> method as a callback given to <block>.set_msg_handler.  This is certainly 
> called when I use the message strobe to input a message to the block, but not 
> when using _post.  Is this some new feature?  Or am I wrong that the 
> operation is the same?

Well SWIG not supporting it (see [1]) doesn't mean one can't write
custom code to run Python from the C end. Python blocks are implemented
via a gateway [2] to do this.

Sebastian

[1] http://www.swig.org/Doc3.0/SWIGDocumentation.html#SWIG_nn30
[2]
https://github.com/gnuradio/gnuradio/blob/master/gnuradio-runtime/lib/block_gateway_impl.cc

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