Mailing-List: contact harmony-dev-help@incubator.apache.org; run by ezmlm
Precedence: bulk
Reply-To: harmony-dev@incubator.apache.org
Received-SPF: pass (hermes.apache.org: local policy)
Subject: Re: [arch] VM Candidate : JikesRVM http://jikesrvm.sourceforge.net/
From: Santiago Gala <sgala@hisitech.com>
To: harmony-dev@incubator.apache.org
In-Reply-To: <20050520.112601.846936252.shudo@aist.go.jp>
References: <428ADE18.1020209@aiqa.com>
	 <1B160BFC-3121-473F-9D1E-232DAC9298A4@apache.org>
	 <135730452.1116486624356.JavaMail.root@set.superlinksoftware.com>
	 <20050520.112601.846936252.shudo@aist.go.jp>
Content-Type: multipart/signed; micalg=pgp-sha1;
 protocol="application/pgp-signature"; boundary="=-u+2wkFj4nxhkWMXpGRwf"
Organization: High Sierra Technology, SLU
Date: Fri, 20 May 2005 13:14:02 +0200
Message-Id: <1116587643.1730.7.camel@localhost>
Mime-Version: 1.0

--=-u+2wkFj4nxhkWMXpGRwf
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

El vie, 20-05-2005 a las 11:26 +0900, shudo@computer.org escribi=C3=B3:
(...)
> Of course, such a runtime will have
> another interpreter or a baseline compiler (written in C/C++?) and
> Java-written JIT can be debugged exhaustively. But such a reflective
> nature certainly makee debugging harder.

Even if this is true (and I don't buy it completely), there is a very
beneficial side-effect: the basic VM core, MM/GC, verifier and JIT make
exceptionally good test cases for themselves, which would greatly reduce
the possibility of bugs or memory leaks when the releases arrive to the
users. At least in the basic data structure and bytecode
interpretation/compilation parts. And specially so if the bootstrapping
is done in a few machine architectures before releasing. Also as a side
effect, performance tuning of the VM will be something intrinsic, as
slowness will be noticed fast.

Regards
--=20
Santiago Gala <sgala@hisitech.com>
High Sierra Technology, SLU

--=-u+2wkFj4nxhkWMXpGRwf
Content-Type: application/pgp-signature; name=signature.asc
Content-Description: This is a digitally signed message part

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.1 (GNU/Linux)

iD8DBQBCjcZ6MGY6e0B83Y0RAq4kAJ9X+d9ZQZ2JitcvCzY39vwnbXpcKQCfR9OW
YsYBRYIrnxJa8UsMRj4P8Qg=
=QicT
-----END PGP SIGNATURE-----

--=-u+2wkFj4nxhkWMXpGRwf--