# How to stop a flowgraph

**URL:** <https://www.ruby-forum.com/t/how-to-stop-a-flowgraph/231862>\
**Category:** GNU Radio\
**Created:** [September 3, 2014, 7:51am UTC](https://www.ruby-forum.com/t/how-to-stop-a-flowgraph/231862 "2014-09-03T07:51:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [September 3, 2014, 7:51am UTC](https://www.ruby-forum.com/t/how-to-stop-a-flowgraph/231862/1 "2014-09-03T07:51:35Z")

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**Author:** ![mostafa\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/5e9695/32.png) [@mostafa\_a](https://www.ruby-forum.com/u/mostafa_a)\
**Post date:** [September 3, 2014, 7:16pm UTC](https://www.ruby-forum.com/t/how-to-stop-a-flowgraph/231862/2 "2014-09-03T19:16:30Z")

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**Author:** ![mostafa\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/5e9695/32.png) [@mostafa\_a](https://www.ruby-forum.com/u/mostafa_a)\
**Post date:** [September 3, 2014, 8:02pm UTC](https://www.ruby-forum.com/t/how-to-stop-a-flowgraph/231862/3 "2014-09-03T20:02:12Z")

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On 09/03/2014 07:15 PM, Mostafa A. wrote:

> In the other words, I want to stop top block but I don’t know how? If I  
> have one source and one sink, I could stop the top block by returning -1  
> from the source, but I don’t know what is the solution here when I have  
> multiple sources.

That’s fine, your fg will eventually shut down. You can also call stop()  
on your top\_block.

M