[Seaside] exceptions while debugging - frozen UI

Lukas Renggli renggli at gmail.com
Thu Apr 10 14:41:19 UTC 2008

> >  - click on the callback method, step over halt, step over zork
> I cannot reproduce that. I get an internal error displayed in the web browser.

Sorry, that's for Seaside 2.9.

>  >  - UI is frozen, image is still alive

And that's for Seaside 2.8 (what you are probably using):

> The problem is that you are trying to request another page in the same
>  session, while you have the stepping debugger open. Every session has
>  a mutex that prevents the handling of multiple requests though. Since
>  the debugger runs in the GUI thread this locks up Squeak.
>  If I press Ctrl+. and close the old debugger, I get a new one on the
>  message not understood zork. So everything seems normal here.
>  Generally you should avoid stepping over code that causes a response
>  to be sent out to the browser, like the error with the #zork, or when
>  doing a #call: or #answer:. In the current implementation this cannot
>  possibly work within a single debugger, as there are many different
>  processes involved (every request gets a new process).

Lukas Renggli

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