The problems with StringBuilders...

Radu Racaru
Tue Oct 4 14:09:00 GMT 2005

On 10/4/05, Andrew Haley <> wrote:
> Radu Racaru writes:
>  > Escape analysis is an old item on the gcj todo list, fortunately
>  > I've seen it working in Excelsior JET to say that it really does
>  > what it should do regarding the performance.
> Ah, that's interesting.  What do they do with inheritance?  Perhaps
> methods have to be final to be analyzed, or they do whole-program
> optimization?

they have a paper here
and more here

>  > Sun has implemented the escape analysis logic in their new 1.6
>  > version, the first fruit to come is simple lock coarsening
>  > (backported to 1.5_05) followed by uncontended synchronization and
>  > stack allocation.  I really like to see this technique build on gcj
>  > (gcjx)
> Sure.  We know how to do most of this stuff, but...
> Andrew.

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