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From "Alexey Varlamov" <alexey.v.varla...@gmail.com>
Subject Re: [drlvm/classlib/jdktools] system property o.a.h.boot.class.path
Date Thu, 30 Nov 2006 03:47:55 GMT
2006/11/30, Geir Magnusson Jr. <geir@pobox.com>:
>
>
> Alexey Varlamov wrote:
> > 2006/11/30, Geir Magnusson Jr. <geir@pobox.com>:
> >>
> >>
> >> Alexey Varlamov wrote:
> >> > 2006/11/30, Geir Magnusson Jr. <geir@pobox.com>:
> >> >>
> >> >>
> >> >> Alexey Varlamov wrote:
> >> >> > 2006/11/30, Geir Magnusson Jr. <geir@pobox.com>:
> >> >> >> (How's that for a category in the subject line?)
> >> >> >>
> >> >> >> I'm working on jdktools, and was getting javac going.  We
have a
> >> small
> >> >> >> issue.  Currently, the wrapper code grabs the boot class path
> >> via the
> >> >> >> system property
> >> >> >>
> >> >> >>     org.apache.harmony.boot.class.path
> >> >> >>
> >> >> >> This is initially set by luni, which collects all the entries
in
> >> >> >> bootclasspath.properties and adds them to the path.
> >> >> >>
> >> >> >> Now, the one thing that it doesn't do is include the kernel.jar,
as
> >> >> >> that's a degree of freedom for the vm which provides that
jar.
> >> >> >>
> >> >> >> Now, in DRLVM, we take the o.a.h.b.c.p and prefix the kernel.jar,
> >> >> prefix
> >> >> >> and postfix -Xbootclasspath/? for a complete runtime bootclasspath,
> >> >> and
> >> >> >> call it
> >> >> >>
> >> >> >>     vm.boot.class.path
> >> >> >
> >> >> > Things are changing :) Since recent H-2008 commit, magics support
> >> jars
> >> >> > are going to bypass this machinery and slip into boot loader
> >> directly
> >> >> > via SetBCPElement().
> >> >>
> >> >> Bypass what machinery?
> >> >
> >> > Composing BCP from prefixes and postfixes, and keeping whole runtime
> >> > BCP string as a property. They just add jars directly to a vector of
> >> > searching elements of BootstrapClassLoader, and this is no good from
> >> > my POV.
> >>
> >> I'm confused.  We do need to have the string, at least able to be
> >> created on demand.
> > Indeed - and I see no reason why treat magics differently.
> >
> >> Do you believe that adding jars directly is no good?
> > I prefer to have the consistent way.
> > IMHO BootstrapClassLoader::SetBCPElement() should not be public, it is
> > just a part of BootstrapClassLoader initialization and not intended
> > for regular usage.
>
> OH!  So you're saying that you don't like the direct injection into the
> vector, but rather would normalize it into the way it's happening now in
> BootstrapClassloader?
>
> if so, I agree 100% - sorry about the confusion

Nice!

>
> geir
>

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