Re: [xmlvm-users] Starting java->objc and a few initial questions

[Gergely K. <ger...@ma...>]

Hi,

You just summarized my experience with Harmony as well.
Of course, Harmony was created to provide a Java API implementation on top
of a simple Libc, with some JVM specific stubs.
I think that it is possible to use parts of Harmony, where it does not use
native calls. However, then you will have to implement _everything_ that
uses native calls, including the private implementations (org.apache.harmony
namespace), which is a lot of work. And it is still not clear how well the
cross-compiled code will perform, or it will be too slow for any serious
use.

Best Regards,
Gergely

2010/3/6 Tor Lillqvist <tm...@ik...>

> > I did some experiments with it back in December, but at that time I
> decided that the amount of work to get it running
> > was higher than the expected gain -- at least for our project.
>
> I have also done some experimentation trying to come up with a minimal
> subset of classes from Harmony that would be enough to cover what the
> Java code that I am pondering using needs (an existing Open Source
> bunch of code, written for a normal Java environment).
>
> I have attempted to "stub out" stuff as necessary to avoid dependency
> explosion.
>
> But... it seems that it's a never ending struggle. There is always
> something missing, then you have a look at those sources in Harmony,
> you think "that doesn't look so bad, let's pull that in too", then you
> notice it pulls in something new that is missing, you add that, which
> then pulls in something else from a totally different part of Harmony,
> etc, etc. It's quite hard to find the right places to make the "cuts",
> what to "stub out". Or maybe I just don't have a good enough view of
> the whole.
>
> Sigh, maybe I should just give up trying to use the code in question,
> this is just for my own free time hacking pleasure anyway, failure
> *is* an option...
>
> --tml
>
>

-- 
Kis Gergely
MattaKis Consulting
Email: ger...@ma...
Web: http://www.mattakis.com
Phone: +36 70 408 1723
Fax: +36 27 998 622