I had more success with 1.2.2's jdb than those of 1.3 in debugging my
apps.
With 1.3's jdb ( using Sun and IBM's ), sometimes it hangs after 'run',
sometimes at other points after 'cont', sometimes I can debug until I
exit.
With Blackdown's 1.2.2 jdb, so far, everything seems to work.
John
Joi Ellis wrote:
>
> I've tried off and on for the last six months to get any app running
> under jdb. I'm familiar with gdb, and I've studied jdb's help and the
> debugger section of 'Core Java' but it simply doesn't fly.
>
> Do any jdb variants actually run on linux? Can anyone provide a
> simple working example of launching an app with it?
>
> I've resorted to running strace on it, after typing the 'run' command
> to launch the child VM, the next command, no matter what it is, (of those
> I've tried) always stops with:
>
> read(8, "PK\3\4\n\0\0\0\0\0\322UW)\205\34\352\3655\n\0\0005\n\0"..., 84) = 84
> _llseek(8, 3986303, [3986303], SEEK_SET) = 0
> read(8, "\312\376\272\276\0\3\0-\0\201\n\0\25\0=\n\0\25\0>\7\0?"..., 2613) = 2613
> send(10, "\0\0\0\v\0\0\0\21\0\1\3", 11, 0) = 11
> rt_sigprocmask(SIG_SETMASK, NULL, [RT_0], 8) = 0
> rt_sigsuspend([]
>
> And my app never starts running. Am I doing something stupidly
> obviously wrong, or is jdb simply nonfunctional on linux no matter whose
> jvm is involved?
>
> --
> Joi Ellis Software Engineer
> Aravox Technologies [EMAIL PROTECTED], [EMAIL PROTECTED]
>
> No matter what we think of Linux versus FreeBSD, etc., the one thing I
> really like about Linux is that it has Microsoft worried. Anything
> that kicks a monopoly in the pants has got to be good for something.
> - Chris Johnson
>
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