[platform-releng-dev] Building eclipse-sourceBuild with Java6 settings f

["Oberhuber, Martin" <Martin.Oberhuber@xxxxxxxxxxxxx>]

Hi Boris,

many thanks for your answer. I was aware that using the
new Java6 classfile format would require building oneself
from the sources, since the new classfile format is not
backward compatible so it's not good for deployment.
Anyways, it would be an interesting experiment for the 
Eclipse instance I'm using myself.

For reference, see https://jdk.dev.java.net/verifier.html
and http://en.wikipedia.org/wiki/Java_performance - in 
the "Notes" section, Wikipedia says: "Some tests showed
that although the new Split verification technique 
improved class loading by roughly 40%, it only translated
to about 5% startup improvement for large programs."

Do you have a pointer to some quick docs how to translate
the Eclipse sourceBuild with Java 1.6 settings such that
the new classfile format is generated?

I asked that question before on the eclipse.platform
newsgroup, see
http://dev.eclipse.org/newslists/news.eclipse.platform/msg61217.html
and I'm excited to hear that it seems to be actually 
possible :-)

Thanks,
--
Martin Oberhuber
Wind River Systems, Inc.
Target Management Project Lead, DSDP PMC Member
http://www.eclipse.org/dsdp/tm 

> -----Original Message-----
> From: Boris Bokowski [mailto:Boris_Bokowski@xxxxxxxxxx] 
> Sent: Monday, May 07, 2007 4:11 PM
> To: Oberhuber, Martin
> Subject: RE: (platform-releng-dev) Platform UI Rebuild Request
> 
> Hallo,
> 
> ehrlich gesagt weiss ich das nicht.  Soweit ich weiss, sind 
> alle Builds,
> die wir zur Verfuegung stellen, mit konservativen 
> Compilereinstellungen
> uebersetzt.  Der u.a. Bug bezog sich darauf, dass Eclipse auch
> funktionieren sollte, wenn man es mit 1.6 Einstellungen 
> uebersetzt, und wir
> hatten ein Pattern verwendet, das unter 1.6 nicht mehr 
> funktioniert.  Das
> Uebersetzen mit den 1.6 Einstellungen muesste aber jeder 
> selbst vornehmen,
> und wir haben das auch nicht extensiv getestet.
> 
> Viele Gruesse,
> Boris Bokowski.
> 
> "Oberhuber, Martin" <Martin.Oberhuber@xxxxxxxxxxxxx> wrote on 
> 07/05/2007
> 08:40:49:
> 
> > Hey, cool... would that use the new Java 1.6
> > optimizations in the class files that account
> > for 25% improved class loading performance
> > according to Sun?
> >
> > Cheers,
> > --
> > Martin Oberhuber
> > Wind River Systems, Inc.
> > Target Management Project Lead, DSDP PMC Member
> > http://www.eclipse.org/dsdp/tm
> >
> > > -----Original Message-----
> > > From: platform-releng-dev-bounces@xxxxxxxxxxx
> > > [mailto:platform-releng-dev-bounces@xxxxxxxxxxx] On Behalf Of
> > > Boris Bokowski
> > > Sent: Thursday, May 03, 2007 7:44 PM
> > > To: platform-releng-dev@xxxxxxxxxxx; platform-ui-dev@xxxxxxxxxxx
> > > Subject: Re: [platform-releng-dev] Platform UI Rebuild Request
> > >
> > > I released another fix in Platform UI for the upcoming 2pm build:
> > >
> > > + Bug 184910. [Workbench] stack trace in UI when starting
> > > eclipse compiled with 1.6 settings from source build (NEW)
> > >
> > > The following projects have changed:
> > > org.eclipse.ui.workbench
> > > org.eclipse.ui.ide
> > >
> > > Boris
> 
>