[fedora-java] Re: java issues on ppc

[Robin Green]

On Fri, 12 Aug 2005 14:01:59 -0600, Orion Poplawski wrote:

> I'm working on packaging plplot for Fedora Extras.  It has a Java 
> interface that appears to work fine on x86 but not on ppc.  Basically 
> the Java stuff is just a JNI wrapper to the C library.
> 
> Is there any way to run the java byte-code/JVM under a debugger?  My 
> first attempt to debug was to compile the program to native code and run 
> under gdb as mentioned on the gcj website, but the native code appears 
> to run fine.

It's tricky - but possible - to debug interpreted bytecode. JDWP protocol
support is being worked on, but it's not ready yet.

Is plplot multithreaded? I've just discovered a thread-safety bug in the
gij interpreter which has lain unfixed for several years:

 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23367

I'm told that this bug only affects the interpreter.

There are also a couple of other threading bugs that I know of (one of
which is not so easy to reproduce on x86 but easy to reproduce on x86-64,
FWIW). But both of those are not specific to interpreted code.

If you want to join the #fedora-java IRC channel on
irc.freenode.net, I can try and help you debug it over IRC.

What kind of problems are you experiencing on ppc, when running plplot as
interpreted?

-- 
Robin