JVM Languages Google Group

Trying to apply various techniques of new JS runtimes to JVM dynamic languages

2008-09-03T21:23:54Z

Well, we certainly live in interesting times, at least as far as
JavaScript runtimes go...
Just recently, WebKit got SquirelFish. I was admittedly surprised that
its main innovation seems to be switching from an AST interpreter to a
bytecode model (as Rhino has been doing bytecode from the very start,

Coming up with better defaults on HotSpot

2008-09-02T20:03:19Z

It's becoming more and more apparent to me that HotSpot's defaults,
while probably great for typical Java applications, are not so great for
e.g. dynamic languages running on the JVM. I think it's time that all
the various dynlang implementers pool their shared knowledge of what
flags need to be tweaked for better performance, so we can form a better

Yesterday was the International Invokedynamic Day

2008-08-27T08:07:31Z

Folks,
as John Rose reported in his weblog, yesterday was the International
Invokedynamic Day: <[link]
>, defined as the day when (quote) "... VM has for the first time
processed a full bootstrap cycle for invokedynamic instructions,
linking the constant pool entries, creating the reified call site

JVM Language Summit agenda is up

2008-08-24T07:17:48Z

FYI, registrations are filling up pretty quick, and now the agenda is
published so I expect them go fast. I'm really excited about the set of
talks in the draft agenda:
[link]
And there's a few more slots we're holding open for late additions.

[Fwd: [Fwd: Re: Registration is now open for the JVM LANGUAGE SUMMIT]]

2008-07-31T17:23:48Z

Hey, maybe some of you saw it on Lambda, but we've opened up
registration for the JVM Language Summit ([link]) and I
know there's a lot of folks on the list that will want to go.
Registration is at registration.jvmlangsummit.com and there's limited
space, so you should get registered as soon as possible.

Getting Attila's dynalang MOP up and going

2008-07-28T19:39:34Z

I managed to do a little experimental wiring of Attila's MOP into
JRuby's Java integration layer, and it certainly seems to be working.
But we need to make some improvements to get it generally useful. Here's
the list I have at present:
- unboxed arg paths up to N
We've managed to squeeze quite a bit more performance out of JRuby by

JVM Languages Summit overlaps w/ Commercial Users of Functional Programming

2008-07-22T15:59:40Z

It looks like the JVM Language Summit runs Sept. 24--26 and SIGPLAN's
Commercial Users of Functional Programming workshop is the single day
of Sept. 26th just after ICFP (Sept. 22--24). Anybody interested in
both and/or contemplating splitting their time between them?

Annotation processing without Sun dependency

2008-07-20T19:07:16Z

Ok, I've got a problem. In JRuby 1.1.3 we started using a compile-time
annotation processor to pre-generate a bunch of code. This has helped
startup time, since before we did this processing at runtime using Java
reflection classes, and just using those classes increased both memory
and startup time.

C and C++ to java bytecode

2008-07-08T14:00:33Z

Does someone has experience of compiling C or C++ code to bytecode?

I found [link]
They say it compiles C to bytecode.

Have someone tried such tools?

Is there solution for C++?

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2008-06-30T07:37:51Z

And it runs on the JVM? :-O
Is there some way to avoid such spams on the JVM lang list?

JSqueak

2008-06-21T21:54:25Z

Dan Ingalls seems to have made JSqueak available again:
[link]

Kilim: Actor framework for Java (in bytecode)

2008-06-20T23:09:33Z

This popped up on one of the Scala mailing lists today: Kilim [1]
"Kilim is a message-passing framwork for Java that provides
ultra-lightweight threads and facilities for fast, safe, zero-copy
messaging between these threads.
It consists of a bytecode postprocessor (a "weaver"), a run time
library with buffered mailboxes (multi-producer, single consumer

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2008-06-20T12:01:40Z

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Bytecode Generation

2008-06-04T15:25:24Z

All~
Thank you all for your earlier suggestions. Now that my project is
complete (well complete enough to have committed back to trunk), I
thought that I would post an update for others. I am cross posting
this to the Janino user email list too.
Based on your suggestions and my reviewing of various websites, I

JSR 292 backport poll

2008-06-02T15:17:31Z

Hi all,
I've just pushed a new implementation of the backport.
CallSites are now created dynamically as needed and can be garbaged
if there are no longer used.
I've planned to release two tools.
- one that can be used at compile time, just after your compiler
or as last step of the compilation (using ASM adapters).