address@hidden: [Jikesrvm-researchers] Update on Classpath library info/effort]

[Mark Wielaard]

Hi,

If people are interested in making Classpath work with the Jikes VM
from IBM here is some info.

General information can be found at
<http://www.ibm.com/developerworks/oss/jikesrvm/>
Currently it uses a proprietary class library.

Cheers,

Mark

----- Forwarded message from Michael Hind <address@hidden> -----

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To: address@hidden
From: "Michael Hind" <address@hidden>
Subject: [Jikesrvm-researchers] Update on Classpath library info/effort
Reply-To: address@hidden
Date: Tue, 18 Dec 2001 21:11:18 -0500


Maria Butrico is working with John Leuner by providing him the information
I mentioned below to enable Classpath to work with Jikes RVM.  If anyone is
seriously interested in working with John on the effort I suggest you
contact him.

Mike

- - - - - - - - - - - - - - - -
Michael Hind, Manager, Dynamic Optimization Group, Jalape?o Project

IBM Watson Research Center
http://www.research.ibm.com/people/h/hind
address@hidden, 914 784-7589, tie: 863-7589
Jikes RVM open source release:
http://www.ibm.com/developerworks/oss/jikesrvm
---------------------- Forwarded by Michael Hind/Watson/IBM on 12/18/2001
08:56 PM ---------------------------

Michael Hind
10/26/2001 05:20 PM

To:    address@hidden
cc:
From:  Michael Hind/Watson/address@hidden
Subject:    Re: [Jikesrvm-researchers] Congratulations on Jikes-RVM 2.0 -
       questions about licensing  (Document link: Michael Hind)

John,

      The Jikes RVM team is happy to hear of your interests to help out.
As your question suggests, we need to provide some guidance on how to
accomplish this task.  Currently, we don't have such a document, but we'll
work on it and make it available.

Meanwhile, here are some high-level preliminary thoughts summarized from
Maria Butrico, our "librarian"  :-)

Library classes can roughly be placed in one of three categories:
  1. fundamental classes
  2. classes used by the virtual machine
  3. classes used only by the application

Classes in the first category must interface to the VM, such as
java/lang/Object
We need to provide some documentation (and possibly improved interfaces) on
how to port for these classes.

Classes in the middle category, because they are used very early in system
initialization, should probably not use native code directly.  Disk IO is
in this category.

Classes in the last category can be implemented with native code without
any serious concern.

We'll work on making this list more concrete.

Mike

- - - - - - - - - - - - - - - -
Michael Hind
Manager, Dynamic Optimization Group, Jalape?o Project
IBM Watson Research Center
http://www.research.ibm.com/people/h/hind
address@hidden
914 784-7589, tie: 863-7589
URL for Jikes RVM release:  http://www.ibm.com/developerworks/oss/jikesrvm


John Leuner <address@hidden>@www-126.southbury.usf.ibm.com on
10/25/2001 01:17:16 PM

Please respond to address@hidden

Sent by:    address@hidden


To:    address@hidden
cc:
Subject:    [Jikesrvm-researchers] Congratulations on Jikes-RVM 2.0 -
       questions about licensing



>I would suggest that a sub-project be started to
>integrate the code from GNU Classpath which should be
>able to replace the JLibrary code.

I would like to help out on such an effort. It would
help  if we knew what the 'core' classes have to
satisfy (java.lang.Object, java.lang.Class,
java.lang.Thread etc)  wrt to structure and native
methods.

John Leuner



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