Hi Timothy
We ran into a similar issue recently as well, see
http://dev.clojure.org/jira/browse/ASYNC-137 for more details. I *think* in
your case you would need to split your work up into chunks and yield
control back to the browser after each chunk of work (with a (timeout 0)).
See https://github.com/Day8/re-frame/wiki/Solve-the-CPU-hog-problem for
more details on this approach.
On Tue, Aug 25, 2015 at 3:33 AM Timothy Pratley <timothyprat...@gmail.com>
wrote:
> I have an issue where work inside a 'go block' is blocking my UI.
> Inserting a (<! (timeout 1)) 'fixes' it.
>
> ** Is there a more idiomatic way? **
>
> Here is a cut down version built from a fresh template:
> If you run this code, you don't see the thinking deeply countdown, and you
> cannot click the other button.
>
> If you uncomment the timeout 1, it works better.
>
>
>
> (defn hello-world []
> [:div
> [:h1 (:text @app-state)]
> [:button
> {:on-click
> (fn [e]
> (swap! app-state assoc :thinking true :thinking-deeply 5)
> (go
> (while (pos? (:thinking-deeply @app-state))
> ;(<! (timeout 2000))
> (apply * (rest (range 10000000)))
> ;(<! (timeout 1))
> (swap! app-state update :thinking-deeply dec))
> (swap! app-state dissoc :thinking :thinking-deeply)))}
> "The button!"]
> (when (:thinking-deeply @app-state)
> [:h2 "Thinking deeply " (:thinking-deeply @app-state)])
> (when (:thinking @app-state)
> [:h2 "Thinking"])
> [:button "The other button"]])
>
> Full source code is attached
>
>
> Regards,
> Timothy
>
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Daniel
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