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Date: Mon, 5 Mar 2007 18:25:59 +0800
From: "Sean Qiu" <sean.xx.qiu@gmail.com>
To: dev@harmony.apache.org
Subject: Re: [drlvm] Illegal command line options
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2007/3/5, Yang Paulex <paulex.yang@gmail.com>:
>
> 2007/3/5, Sean Qiu <sean.xx.qiu@gmail.com>:
> >
> > I have been trying to run the eclipse's tests with harmony's classlib
> > recently.
>
>
> DRLVM or IBM VME?


DRLVM can handle the "-verify" option, while IBM VME will fail.

There are some tests will pass the string "-verify" to create a new VM.
> > For the reason mentioned by Oliver, all these tests failed because our
> > launcher pass it directly to vm.
> > It seems that the option "-verify" is widespread.
> >
> > So, i suggest to handle this specificly for -verify in our launcher.
>
>
> If this incompatibility break applications like Eclipse, I think we have
> no
> choice but to be compatible, and I agree that this case should be fixed in
>
> launcher, because if one Harmony compatible VM complies with RI and spec
> on
> this -verify option, Harmony launcher should not break it.
>
> Would you please raise a jira on this? I'd like to look at it.


Of course, i have report it in
 https://issues.apache.org/jira/browse/HARMONY-3293

2007/2/16, Alexey Varlamov <alexey.v.varlamov@gmail.com>:
> > >
> > > You are right, I'm reading the same in the spec ... and this appears
> > > to be a problem.
> > > There is a number of standard options actualy:
> > > -client/-server, -agentlib/-agentpath, -ea/-da/-esa/-dsa/, -help,
> > > -version/-showversion etc
> > > Should the launcher recognize&convert all of them? Looks somewhat
> > > cumbersome...
> > > Maybe just prefix any unrecognized with __(double underscore), like
> > > -verify to __-verify.
> > > Just easier for VM to trim such prefix and parse as standard arg :)
> > >
> > > --
> > > Alexey
> > >
> > > 2007/2/15, Oliver Deakin <oliver.deakin@googlemail.com>:
> > > > It has come to my attention recently that DRLVM accepts the -verify
> > > > option when it is passed in through the invocation API. This
> actually
> > > > breaks the JNI spec rules outlined at:
> > > >
> > > >
> > >
> > http://java.sun.com/j2se/1.5.0
> /docs/guide/jni/spec/invocation.html#wp16334
> > > >
> > > > These rules are actually quite tight - if I read it correctly, it
> > > > appears that they do *not* allow the VM to interpret "-version" as
> an
> > > > option, and if you write a simple launcher that tries to pass
> -version
> > > > to the RI via CreateJavaVM you get an error:
> > > >
> > > >  Unrecognized option: -version
> > > >  Cannot create JavaVM
> > > >
> > > > The spec seems fairly clear that we should not respect these options
> > if
> > > > they are passed through, but we can accept X prefixed versions of
> > them.
> > > > This would require the launcher to convert these options from e.g.
> > > > -verify to -Xverify before passing them into the VM.
> > > >
> > > > Thoughts?
> > > >
> > > > Regards,
> > > > Oliver
> > > >
> > > > --
> > > > Oliver Deakin
> > > > Unless stated otherwise above:
> > > > IBM United Kingdom Limited - Registered in England and Wales with
> > number
> > > 741598.
> > > > Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire
> PO6
> > > 3AU
> > > >
> > > >
> > >
> >
> >
> >
> > --
> > Sean Qiu
> >
>
>
>
> --
> Paulex Yang
> China Software Development laboratory
> IBM
>


-- 
Sean Qiu

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