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From Mike <mikeandm...@gmail.com>
Subject Re: [GSoC] My proposal
Date Tue, 31 Mar 2009 04:19:32 GMT
I've been considering dynamic load tracing method these days. It seems
that we have to do a hack on the drlvm's classloader? Did drlvm provide
us a hook for tracing which class is loaded?

Thanks.
Mike

在 2009-03-31二的 12:17 +0800,Xiao-Feng Li写道:
> One another thing is the consideration of dynamic class loading.
> 
> Thanks,
> xiaofeng
> 
> On Mon, Mar 30, 2009 at 11:57 PM, Jimmy,Jing Lv <firepure@gmail.com> wrote:
> > Wow the plan's excellent Daniel!
> >
> > And an advanced question, as you know, the jre does not only have classes,
> > but also resources files, property files and etc. So do you have any ideas
> > on select them and merge into the customized JRE? :)
> >
> > 2009/3/30 Daniel Gong <daniel.gong.fudan@gmail.com>
> >
> >> Hi all,
> >>    I'm a postgraduate student from Fudan University, Shanghai, China.
> >>   This is my first time joining GSoC and I was not quite clear that I
> >> should exchange my ideas with possible mentors. I've submitted my proposal
> >> today. It's lucky that I can still modify it.
> >>   Here is my proposal, any criticism and suggestions are welcome~
> >>
> >> =====================================================
> >>
> >> *Abstract:*
> >>
> >> The main idea to deal with the subject is to collect infomation from the
> >> input first and then generate smallest JRE according to the infomation
> >> collected and harmony classes dependences.
> >>
> >> *Detailed Description:*
> >>
> >> The implementation of the tool can be divided into 4 parts:
> >>
> >>   1. Infomation Collector. Automatic lexcial tool such as JLex may be used
> >>   to analysis the input code and collect infomation including which classes
> >> in
> >>   JRE does the project depend on.
> >>   2. Data structure design. Both project-jre class dependence and jre inner
> >>   class dependence should be represented in an uniform way.
> >>   3. Class Lister. An algorithm should be designed to compute with the
> >>   dependence and list out the classes needed in the smallest JRE.
> >>   4. JRE Builder. Build a JRE according to the class list.
> >>
> >> *Initial* *Algorithm Design*
> >>
> >> Use a, b to represent two classes, and <a, b> to represent a relation
> >> between a & b, that is, a depends on b, in other words, b is refered in
> >> source code of a.
> >>
> >>   1. Given a project with its class set P, let set S = P and set M = empty.
> >>
> >>   2. For each class c in S, search for dependence <c, *>, and for each
d
> >>   that <c, d> exists and d is not in M, put d in S. After searching for
<c,
> >>   *>, put c in M and delete it from S.
> >>   3. Loop step 2 until S is empty, return M - P.
> >>
> >> Here a project's class set includes its customized classes and classes in
> >> other packages that the project may link to.
> >>
> >> *Possible problems to solve*
> >>
> >> To collect the infomation, just reading the "import" part of the code is
> >> not
> >> a precise strategy. A lexicial scan of the code from begin to end is a
> >> must.
> >> Automatic lexcial tools can be used to solve the problem.
> >>
> >> JRE is not just a simple collection of classes needed. Getting familiar
> >> with
> >> the structure of Harmony JRE is a must.
> >>
> >> *Draft Timeline*
> >>
> >>   - Week 1-2 Complete the design of data structure and the algorithm;
> >>   - Week 3-4 Implement the module of infomation collector;
> >>   - Week 5-6 Implement the algorithm to list out the classes;
> >>   - Week 7-8 Implement the JRE builder;
> >>   - Week 9 Debug the whole module and make necessary modifications
> >>   to successfully complete the subject.
> >>
> >> *Additional Information:*
> >>
> >> I've been learning and using Java since 3 years ago. Although my
> >> experience of Harmony is not that vast, my knowledge in programming,
> >> software architecture, compiler building and algorithm can help me to learn
> >> fast and handle the problem.
> >>
> >> I'm 23 years old, living in Shanghai, China, attending Fudan University.
> >>
> >> =====================================================
> >>
> >
> >
> >
> > --
> >
> > Best Regards!
> >
> > Jimmy, Jing Lv
> > China Software Development Lab, IBM
> >
> 
> 
> 


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