Hi
I was hoping that somebody might come up with a better solution to the one I
currently use ( as it's very flaky ) so I though I'd post the way I debug
JNI on Linux.
1) Get a copy of ddd. ( Pleeeease don't post messages as to how you get it,
it'll just piss of the rest of the guys )
2) Using the jdb feature of the debugger, start your application and place a
break point on your native method.
3) When you hit the break point, startup another ddd session except use the
attach feature to debug the (green) java program.
4) Set a breakpoint in your JNI code.
5) press the cont button on the C/C++ debug session.
6) press the cont button the Java session.
Yeah yeah yeah, I know its not great, but it works most of the time :-(
Or you could write you own program which loads the virtual machine and just
use ddd on that, setting a breakpoint in your shared library or what
ever.....
Best regards
--Jools
>From: Paul Beardsley <[EMAIL PROTECTED]>
>To: Juergen Kreileder <[EMAIL PROTECTED]>
>CC: [EMAIL PROTECTED]
>Subject: Re: debuggers for Java-JNI-C++
>Date: Tue, 21 Sep 1999 12:07:43 -0400 (EDT)
>
>
>OK, but I'm running Java 2 SDK so I think I don't have
>access to a java_g - is there an alternative
>approach for Java 2?
>
>Paul.
>
>
>Juergen Kreileder writes:
> >
> > Paul> Thanks, but how do I do that first step of
> > Paul> running a JVM under Java - is there a C
> > Paul> executable somewhere that runs a JVM,
> > Paul> so that I can gdb that executable?
> >
> > $ DEBUG_PROG=gdb java_g
> > ...
> > (gdb) run <classname>
> >
>
>
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