sablevm-developer

[Sablevm-developer] problem running gjdoc (javadoc replacement) w/ SableVM

[Grzegorz P. <gr...@se...>]

Hi!

Having properly installed sablevm (HelloWorld works) I tried to
run gjdoc [1] and got this:

greg@greg:~/deb-pkgs/gjdoc/markhoward$ (cd /tmp/gjdoc;
gjdoc -doclet gnu.classpath.tools.doclets.xmldoclet.Driver -sourcepath
/tmp/gjdoc/ $*)
java.lang.NoClassDefFoundError: [Ljava/lang/String;
	at java.lang.ClassLoader.createArray(ClassLoader.java:417)
	at java.lang.ClassLoader.createArray(ClassLoader.java:340)
	at java.lang.Class.forName(Class.java:309)
	at java.lang.Class.forName(Class.java:268)
	at gnu.classpath.tools.gjdoc.Main.class$(Main.java)
	at gnu.classpath.tools.gjdoc.Main.startDoclet(Main.java:298)
	at gnu.classpath.tools.gjdoc.Main.start(Main.java:780)
	at gnu.classpath.tools.gjdoc.Main.main(Main.java:678)
	at java.lang.VirtualMachine.invokeMain(VirtualMachine.java)
	at java.lang.VirtualMachine.main(VirtualMachine.java:88)

gjdoc is this:
exec java --classpath /usr/share/java/libgcj.jar -jar
/usr/share/java/gjdoc.jar "$@"

gjdoc debian packages can be (temporarily) found at
http://tildemh.com/tmp/gjdoc/

Mark Howard has done some work on this topic and reported that
he was able to run it with gcj *only* (compiled to native code).

[if you fetch the all_deb from there change gij in /usr/bin/gjdoc
to java and setup your alternatives properly to use sablevm as java)

or - the call to sablevm looked like this:
/usr/bin/sablevm -Y
--classpath=/usr/share/java/gjdoc.jar:/usr/share/java/libgcj.jar
gnu.classpath.tools.gjdoc.Main -doclet
gnu.classpath.tools.doclets.xmldoclet.Driver -sourcepath /tmp/gjdoc/

I may be wrong - but it seems that there's something wrong w/
createArray? So it is rather gnu classpath related problem not
SableVM?

Cheers

					Grzegorz B. Prokopski

Re: [Sablevm-developer] problem running gjdoc (javadoc replacement) w/ SableVM

[Mark W. <ma...@kl...>]

Hi,

On Wed, 2002-10-16 at 13:27, Grzegorz Prokopski wrote:
> 
> gjdoc is this:
> exec java --classpath /usr/share/java/libgcj.jar -jar
> /usr/share/java/gjdoc.jar "$@"

Try removing the /usr/share/java/libgcj.jar from the classpath. Those
are the core classes from gcj which are not (yet) the same as the GNU
Classpath classes which are used with sablevm.

> Mark Howard has done some work on this topic and reported that
> he was able to run it with gcj *only* (compiled to native code).

Yes this works very nicely.

> or - the call to sablevm looked like this:
> /usr/bin/sablevm -Y
> --classpath=/usr/share/java/gjdoc.jar:/usr/share/java/libgcj.jar
> gnu.classpath.tools.gjdoc.Main -doclet
> gnu.classpath.tools.doclets.xmldoclet.Driver -sourcepath /tmp/gjdoc/

Here also, try to remove the libgcj.jar.
Also note that currently gjdoc needs the sources of the core classes
also on the sourcepath. (It should print a WARNING at the beginning
about that.)

> I may be wrong - but it seems that there's something wrong w/
> createArray? So it is rather gnu classpath related problem not
> SableVM?

createArray() looks like a SableVM addition to java.lang.ClassLoader
which is not present in the upstream Classpath sources.

Cheers,

Mark

Re: [Sablevm-developer] problem running gjdoc (javadoc replacement) w/ SableVM

[Etienne M. G. <eti...@uq...>]

Hi Folks,

On Wed, Oct 16, 2002 at 01:27:45PM +0200, Grzegorz Prokopski wrote:
> I may be wrong - but it seems that there's something wrong w/
> createArray? So it is rather gnu classpath related problem not
> SableVM?

I was running some experiments, and I noticed that SableVM seemed
broken; it wouldn't run the SPECjvm benchamrks anymore! (Complaining
about the missing nativeCreateArray).

So, after investigation, I finally found the problem: Jikes 1.17
generates internal class bytecodes which make these invocations,
whereas Jikes 1.15 doesn't.

On the short term, you should be using Jikes 1.15 (There's a package
for it, I think, in Debian "testing").

Of course, I'll have to fix SableVM to implement the
nativeCreateArray... On my TODO list (getting pretty long).

Etienne

-- 
Etienne M. Gagnon                    http://www.info.uqam.ca/~egagnon/
SableVM:                                       http://www.sablevm.org/
SableCC:                                       http://www.sablecc.org/

Re: [Sablevm-developer] problem running gjdoc (javadoc replacement) w/ SableVM

[Grzegorz P. <gr...@se...>]

W li=B6cie z czw, 24-10-2002, godz. 20:23, Etienne M. Gagnon pisze:=20
> Hi Folks,
>=20
> On Wed, Oct 16, 2002 at 01:27:45PM +0200, Grzegorz Prokopski wrote:
> > I may be wrong - but it seems that there's something wrong w/
> > createArray? So it is rather gnu classpath related problem not
> > SableVM?
>=20
> I was running some experiments, and I noticed that SableVM seemed
> broken; it wouldn't run the SPECjvm benchamrks anymore! (Complaining
> about the missing nativeCreateArray).
>=20
> So, after investigation, I finally found the problem: Jikes 1.17
> generates internal class bytecodes which make these invocations,
> whereas Jikes 1.15 doesn't.
I installed 1.15 jikes for testing and...
gjdoc works (at least help shows) only IF libgcj.jar is in the
classpath!

Else - the previous error appears!

> Of course, I'll have to fix SableVM to implement the
> nativeCreateArray... On my TODO list (getting pretty long).
I think that using jikes 1.15 for gjdoc compilation didn't really solve
this problem.

					GBP

PS: Hmm... I just thought that maybe recompilation of sablevm-classlib
with jikes 1.15 can help. I won't check it ATM.

I will be uploading gjdoc into unstable anyway.
(there's always gcj arch-specific version available - thanks to
Mark Howard <mh...@ti...> )