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From meh...@cs.man.ac.uk
Subject Re: "Harmony class library support in JikesRVM"
Date Sun, 06 Apr 2008 16:49:43 GMT
Hi Alexei,

Thanks for your quick and informative reply. I will update this accordingly.

Best Regards,
Rahul

On Apr 6 2008, Alexei Fedotov wrote:

> Hello Rahul,
> >From a technical point of view this is a very interesting proposal.
> Thanks for challenging a task which may bring Harmony more interest
> and customers.
> 
> BTW, I noticed that you mentioned getting feedback, testing,
> publishing and implementing in your proposal. I would rather call
> these items "process oriented" than "deliverable oriented". For me it
> would be more interesting to hear that something works on Jikes +
> Harmony, or even to know where to download a bundle capable of
> launching "Hello, World". Also defining deliverables allows your
> mentors to check if the project is successful.
> 
> Thanks.
> 
> 
> 
> On Sun, Apr 6, 2008 at 2:00 PM,  <mehtar@cs.man.ac.uk> wrote:
> > Hi Developers,
> >
> >  My name is Rahul Mehta. I am interested in "Harmony class library 
> > support" in JikesRVM project through GSoC. I wrote a proposal with the 
> > guidance of Andrew John Hughes, Ian Rogers and Tim Ellison.
> >
> >  I am sending this proposal as plain/txt format for Apache developer's 
> > consideration and will be glad if you can comment on this. You can find 
> > this on Google web app along with the 'Detailed Description' section.
> >
> >  The project proposal is given below:
> >
> >  Best Regards,
> >  Rahul
> >
> >  -------------------------------
> >
> >  Project Proposal
> >
> >
> >  Synopsis:
> >
> >  Presently, JikesRVM is using GNU Classpath libraries [1] it would be 
> > interesting to integrate the Apache Harmony class libraries [2] into 
> > JikesRVM. Not only would this enable a variety in the implementation of 
> > core collection classes that would be interesting for research with the 
> > JikesRVM. They would also provide a work around for when functionality 
> > is missing from GNU Classpath such as missing management APIs and the 
> > new row-set APIs in Java 5.
> >
> >  Project Plan:
> >
> >  My objective will be to complete the following major tasks. However, 
> > I am investigating the other tasks, issues and solutions. I believe 
> > these tasks will enhance the JikesRVM's (by integrating with Apache 
> > Harmony class library) in terms of functionality and completeness.
> >
> >  I will focus on the following tasks:
> >
> >  &#61607; Focus on VM Interfaces as current implementation of VM 
> > Interfaces is written in Java (as JikesRVM is written in Java that 
> > means the current VM Interfaces are written in Java rather than native 
> > code)
> >
> >  &#61607; Focus on the implementation of some Kernel java classes (like
> > java.lang.Class)
> >
> >  &#61607; Investigate how JikesRVM can be integrated with Harmony's 
> > threading and runtime models as Harmony provides its own Thread Manager 
> > and runtime modules
> >
> >  How this will work:
> >
> >  Jikes RVM will communicate with Apache Harmony class libraries 
> > through a set of kernel java classes (The Kernel Java classes are those 
> > classes which are tied to the structure of the VM, or whose structure 
> > is known by the VM, like java.lang.Class) and VM Interface* (which 
> > contains the VM entry points required by other class library natives) 
> > as described in the Harmony Class Library Porting Documentation [3].
> >
> >  This task will include several class implementation. Possibly, we can 
> > use the DRLVM implementations of these classes. Generally, the IBM 
> > implementations rely on the presence of (typically) VM specific natives 
> > to implement the required Java APIs so we can use them and can provide 
> > our own implementation for those classes. [3]
> >
> >  Consideration on Key areas:
> >
> >  &#61607; Implementation of Kernel java classes &#61607; 
> > Implementation of VM Interface in native code &#61607; Investigatation 
> > about how JikesRVM can be integrated with Apache Harmony's Thread 
> > Manager and other runtime modules
> >
> >  Road Map:
> >
> >  &#61607; Publish my goals to the JikesRVM community (mailing list) 
> > and try to get some feedback and suggestions on my plans. (until mid of 
> > May) &#61607; Implement the certain classes (Kernel Java Classes and VM 
> > Interface) (until July Starting ) &#61607; Testing of new 
> > implementation with the help of the JikesRVM community. (until mid of 
> > August)
> >
> >
> >
> >  * The VM Interface forms the boundary between the class libraries and 
> > the Jikes Virtual machine, and allows them to interact with each other.
> >
> >
> >  References:
> >
> >  [1] JikesRVM, http://jikesrvm.org/
> >
> >  [2] Apache Harmony Class Library,
> > http://harmony.apache.org/subcomponents/classlibrary/index.html
> >
> >  [3] Harmony Class Library Porting Documentation, 
> > http://svn.apache.org/viewvc/harmony/enhanced/classlib/trunk/doc/kernel/kernel.txt?revision=476395&view=markup
> >
> >  [4] Virtual Machine Interface, 
> > http://mail.openjdk.java.net/pipermail/challenge-discuss/2008-March/000084.html
> >
> >
> >  Biography:
> >
> >  I am a computer science graduate. At present enrolled with IGNOU, 
> > India in Master in Computer Applications program. I have already earned 
> > my Master degree in Advanced Computer Science from University Of 
> > Manchester in 2007. I obtained one Master degree in Information 
> > Technology from Punjabi University, India. Before that, I studied 
> > Bachelor in Computer Applications from Meerut University, India. I have 
> > good Java programming experience. I have already worked on threading 
> > model of JikesRVM in my Master thesis.
> >
> >  -----------------------------------
> >
> >
> 
> 
> 
> 

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