Re: [cp-patches] RFC: revert single thread GTK event queue design

[Thomas Fitzsimmons]

On Mon, 2005-08-15 at 00:20 -0400, Thomas Fitzsimmons wrote:
> Hi,
> 
> This patch reverts EventQueue and the GTK peers from its current single-
> threaded design to a simpler two-threaded design.  The GTK main loop
> will now run in its own thread, separate from the AWT event dispatch
> thread.  I'm reverting this for two reasons:
> 
> One, the contention between the AWT event queue lock and the GDK lock was 
> impossible to resolve satisfactorily.  The single threaded design was only 
> workable if we could release the GDK lock in GTK callbacks that posted to the 
> event queue (thus acquiring the AWT event queue lock).  It turns out that it 
> is unsafe to release the GDK lock in that situation.  Therefore our current 
> callbacks are wrong, and the assumption that the single threaded design 
> relied on is invalid.
> 
> Two, the single-threaded design introduced new methods to
> ClasspathToolkit and calls to those methods in EventQueue.  With the
> introduction of the Qt peers, there's a push to remove references to
> ClasspathToolkit from within the java.awt namespace.
> 
> Comments?

I got positive comments from people on IRC, so I committed this.

Tom