Re: [Discuss-gnuradio] KeyboardInterrupt not being caught in top_block

[Eric Blossom]

What version of GNU Radio?
What OS, distribution, version?
(We fixed bugs in this area about a year ago...)


On Thu, Jun 17, 2010 at 12:29:10AM +1000, Kyle Zhou wrote:
>
> Basically, I want to catch Ctrl+C after top_block.run()
> For example
> 
>     try:
> 
>         my_top_block().run()
> 
>     except KeyboardInterrupt:
> 
>         print "Ctrl+C has been pressed. Exiting."
> 
> 
> However, when Ctrl+C is pressed, the program exits straight away without
> executing the print function.
> 
> It seems that KeyboardInterrupt is not propagated to the main thread?
> 
> 
> What am I doing wrong?
> 
> 
> By the way, if I caught some exception in work(), what is the best way to
> exit the program? top_block.stop() or raise SystemExit, 1?

Just return -1 from work.  The graph will stop.

Eric