harmony-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Mikhail Fursov" <mike.fur...@gmail.com>
Subject Re: Harmony+Eclipse and Scrapbook Pages
Date Fri, 20 Apr 2007 19:22:50 GMT
It proves that we have a
bug here that can be fixed without lazy resolution fixes. The only
problem is to minimize the testcase.


On 4/21/07, Eugene Ostrovsky <eugene.s.ostrovsky@gmail.com> wrote:
>
> Yes. jrockit-jdk1.5.0-windows-ia32 works fine.
>
> On 4/20/07, Mikhail Fursov <mike.fursov@gmail.com> wrote:
> >
> > Yes, JIT mode and interpreter mode are different in class resolution
> > strategy.
> >
> > Here how it works:
> > With interpreter class resolution is initiated when the class is
> actually
> > needed: object of the class is created, a static field or a static
> > method is invoked. This is the same as SUN behaviour. (AFAIK they use
> > interpreter too)
> >
> > With JIT we have eager resolution today: all classes referred in a
> method
> > (and all inlined methods!) are resolved during compilation time. AFAIK
> BEA
> > works  this way too. At least, I can write tests that demonstrate it. If
> a
> > method has multiple references to a class and its resolution fails JIT
> > asks
> > again an again to resolve it. Moreover, if exception happened in
> > classloader
> > - it can be lost.
> >
> > Now I'm working on Lazy Resolution task and going to submit it to JIRA
> > right
> > after JavaOne is finished (there are a lot of changes and regressions
> are
> > possible). After it's done JIT will be able to work in either eager or
> > lazy
> > mode. And I hope most of the resolution related bugs will gone after it.
> >
> > BTW did you tried the same scenario with BEA?
> >
> >
> > On 4/21/07, Ivan Popov <ivan.g.popov@gmail.com> wrote:
> > >
> > > Yes, in interpreter mode step works fine. I don't see second attempt
> > > to load class in classloader trace while step is performed.
> > >
> > > Is it possible that in JIT mode first invocation of a method of
> > > already loaded class may lead to compilation and attempt to load this
> > > class second time?
> > >
> > > Thanks.
> > > Ivan
> > >
> > > On 4/20/07, Eugene Ostrovsky <eugene.s.ostrovsky@gmail.com> wrote:
> > > > BTW everything works fine with harmony VM in interpreter mode (-Xint
> > > option)
> > > >
> > > > On 4/20/07, Tim Ellison <t.p.ellison@gmail.com> wrote:
> > > > >
> > > > > Ivan Popov wrote:
> > > > > > Thanks, Mikhail, It might be useful, but I dont know how to
> > specify
> > > > > > options for VM running Scrapbook code, it is started
> > automatically.
> > > > >
> > > > > Select the jpage page file and choose the properties option from
> the
> > > > > context menu (Alt+Enter), in there you can find a 'Scrapbook
> > Runtime'
> > > > > page where you can specify the VM and options etc it will use.
> > > > >
> > > > > Tim
> > > > >
> > > > >
> > > >
> > >
> >
> >
> >
> > --
> > Mikhail Fursov
> >
>



-- 
Mikhail Fursov

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message