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Message-ID: <19e0530f0605030835t2f51ab97uef9120d2cbfa023@mail.gmail.com>
Date: Wed, 3 May 2006 11:35:29 -0400
From: "Davanum Srinivas" <davanum@gmail.com>
Reply-To: dims@apache.org
To: harmony-dev@incubator.apache.org
Subject: Re: DRLVM contribution - try this out!
In-Reply-To: <6928c5160605030715v2dc0e55en4ab725e25f60dc7e@mail.gmail.com>
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References: <6928c5160605030715v2dc0e55en4ab725e25f60dc7e@mail.gmail.com>

AWESOME!!!!

On 5/3/06, Andrey Chernyshev <a.y.chernyshev@gmail.com> wrote:
> Dear All,
>
> I'm happy to announce the contribution of the DRL Virtual Machine on beha=
lf of
> Intel.
> I have described in the bottom of this message how you can try it for you=
rself.
>
> The code is a result of efforts of Intel Middleware Products Division tea=
m. The
> archive with the contribution is uploaded to the following location:
>
> http://issues.apache.org/jira/browse/HARMONY-438
>
> The issue contains two zip archives:
>
>     DRLVM_src_20060502_1806_Harmony.zip
>         - The DRLVM source code contribution, containing the following
> components:
> VM (or VM core)
> GC
> JIT
> Bytecode verifier
> Kernel classes
> OS layer
>
>     DRLVM_src_20060502_1806_Patches_for_Harmony.zip
>         - A few patches that should be applied to Harmony class libraries
>      in order to integrate them with DRLVM.
>
> We checked that the JRE combined from the DRLVM and the Harmony class lib=
raries
> is capable of running Eclipse and Ant. It was tested with Harmony classes=
 taken
> at 03/13 (plus some contributions existed to that date, such as HARMONY-3=
9 and
> HARMONY-88) on Windows and Linux IA32.
>
> The building system included with the DRLVM is entirely written on Ant an=
d is
> capable of producing a workable JRE combined from DRLVM and Harmony
> class libraries (we have intentionally included the compilation of class
> libraries code into the DRLVM building system to give an example how the =
native
> code for the complex multi-component project can be built with Ant). Both=
 VM and
> Class Libraries can be built with MSVC or Intel C compiler on Windows and=
 gcc or
> Intel C compiler on Linux IA32. Eclipse 3.1.1 compiler is used for compil=
ing the
> Java code.
>
> DRLVM communicates with the Harmony class libraries through the set of ke=
rnel
> classes and VMI interface, as described in the Harmony Class Library Port=
ing
> Documentation. We had to add the java.lang.SringBuffer into the kernel cl=
asses
> set for now since it is tighten to the java.lang.String in our implementa=
tion.
>
> The DRLVM is not yet a complete full-functional product, there is a plent=
y of
> things to do such as 1.5 support or missing some of JVMTI/JNI capabilitie=
s.
> Please refer to the README.txt and Developers Guide (located in the 'doc'
> directory) provided with the contribution. However, we hope that the exis=
ting VM
> implementation, in conjunction with the Harmony class libraries and Eclip=
se, at
> least should be able to provide the self-hosting environment where develo=
pers
> can edit, compile and run Java code using Eclipse, execute Ant (you can t=
ry
> to rebuild the DRLVM and Harmony class libraries by executing it's Ant bu=
ilding
> system on top of the previously built DRLVM image).
>
> IMPORTANT NOTE: the building system, by default, downloads all the necess=
ary
> software and libraries such as Eclipse, APR, LogCXX or zlib directly from=
 the
> Internet, BY RUNNING THE DRLVM BUILD YOU ARE ACCEPTING THE LICENSE TERMS =
for the
> software and libraries used for the DRLVM compilation and linking. Please=
 refer
> to the README.txt provided with the contribution for more detailed inform=
ation
> how to build DRLVM and which software/libraries are used for that.
>
>
> HOW TO TRY IT:
>
> To build the DRLVM, just extract the both zip archives into the same dire=
ctory,
> set ANT_HOME and JAVA_HOME, run the "build update" and then "build". See =
the
> README.txt for more details, including the software required (you'll need=
 some
> JRE, C/C++ compiler, Ant and Svn tool to checkout classlibs).
>
> Note that the DRLVM may not work with the most recent version of Harmony =
class
> libraries since the latter is constantly changing (the last version of cl=
asses
> we were adopting the DRLVM for was taken at 03/13). Some work will still =
be
> needed to integrate it with the most recent version of the class librarie=
s.
>
> You are welcome to try it and share your opinion!
>
> Thank you,
> Andrey Chernyshev
> Intel Middleware Products Division
>
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>


--
Davanum Srinivas : http://wso2.com/blogs/

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