Re: Coding Challenge

Roedy Green <my_email_is_posted_on_my_website@xxxxxxxxxxxxxx> wrote:
> Newbies often bring problems to the table that suggest they have done
> something to tie up the swing thread either by giving it some lengthy
> task in an event handler or even going to sleep.
>
> 1. What I would like is something a newbie could tack onto pretty
> well any GUI app that can detect that, and perhaps even diagnose where
> it is happening.
>
> 2. this one is more difficult. People often poke Swing components
> from the non Swing thread. How could you create a wrapper around all
> the Swing components to detect that abuse in a way even a newbie
> could use it? Perhaps there is a way using the JXTA debug interface
> to pull it off in Java.

This is one of the few places where AOP sounds interesting. AOP could
be used to solve SOME of #1 (intercept uses of certain blocking APIs
from the EDT) and pretty much all of #2 (intercept calls to Swing
components outside of the EDT) at runtime. Of course, building the
rules for #2 could be tedious, as you'd need to go through all of Swing
and determine the rules for when it is/isn't safe to access something
through a non-EDT thread.

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