Re: [Java-gnome-developer] How do you fire an event on the main Gtk thread?

[Andrew C. <an...@op...>]

On Mon, 2008-12-22 at 06:18 -0800, Jacek wrote:
> In Swing, you use SwingUtilitilies.invokeLater(Runnable) for this.
> In SWT, it's Display.asyncExec(Runnable).
> 
> What is the equivalent API for Java-Gnome?

There isn't one. java-gnome is thread safe.

Hooray, thank god, happy new year, etc.

++

I wrote about this a long time ago; sorta surprised you missed it seeing
as how it's the first hit for "java-gnome thread":
http://research.operationaldynamics.com/blogs/andrew/software/java-gnome/thread-safety-for-java.html

but our wonderful thread safety *is* mentioned in the public API
documentation here:
http://java-gnome.laptop/4.0/doc/api/org/gnome/gdk/Gdk.html and was
written about in the release notes a number of times, as far back as
4.0.3 when it was introduced:
http://java-gnome.sourceforge.net/4.0/NEWS.html#4.0.3 . 
Anyone in our IRC channel could have told you about it, I'm sure.

Anyway, no messing around with idle callbacks or any other such
nonsense. Just use a worker thread, but be aware that a) signal handlers
run in the main thread (and are already within the GDK lock throughout),
and b) holding the main lock and blocking the main loop are synonymous,
so the injunction to get on with things that applies to signal handlers
really applies globally.

++

Perhaps this needs to be noted a bit more prominently. We haven't worked
on the website for a while, so perhaps it's time for some changes.
Discussion of how best to do so to java-gnome-hackers; suggestions [in
patch form] for the site always welcome. The current site is based on
the 'website' branch from the usual place (although the website code is
in *every* branch of java-gnome, in web/public/).

AfC
Sydney

-- 
Andrew Frederick Cowie

Operational Dynamics is an operations and engineering consultancy
focusing on IT strategy, organizational architecture, systems
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successful deployment of mission critical information technology in
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http://www.operationaldynamics.com/

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