SHUDO Kazuyuki wrote:
> If you'd like to use green threads usually, you may
> modify the bin/.java_wrapper file. Modify the following
> line as you like:
>
> DEFAULT_THREADS_FLAG=native
It should also work just to set (and export) the environment variable
THREADS_FLAG=green.
Nathan
SHUDO Kazuyuki wrote:
>
> Richard Johnson wrote:
>
> > Program received signal ?, Unknown signal.
> > 0x4012eb6e in __sigsuspend (set=0xbffff2a8) at
>../sysdeps/unix/sysv/linux/sigsuspend.c:48
>
> I guess your GNU debugger (gdb) doesn't support
> LinuxThreads which JDK uses as native threads. I can get
> the following message with gdb 4.18:
>
> Program received signal SIG38, Real-time event 38.
> 0x2ab6d58b in __sigsuspend (set=0x7fffee34)
> at ../sysdeps/unix/sysv/linux/sigsuspend.c:48
>
> In this case, LinuxThreads uses SIG38, SIG39 and
> SIG40. You can find the following code in pthreads.c of
> LinuxThreads.
>
> int __pthread_sig_restart = __SIGRTMIN;
> int __pthread_sig_cancel = __SIGRTMIN + 1;
> int __pthread_sig_debug = __SIGRTMIN + 2;
>
> I suggest using the version of gdb supports LinuxThreads
> if you want to debug with native threads. In the case
> that the signal for LinuxThreads suspends the execution,
> you can use the `continue' command of gdb. And you can
> also instruct the gdb how to handle signals with the
> `handle' command. I wrote `handle SIG38 nostop' into the
> $HOME/.gdbinit file.
>
> If you'd like to use green threads usually, you may
> modify the bin/.java_wrapper file. Modify the following
> line as you like:
>
> DEFAULT_THREADS_FLAG=native
>
> Kazuyuki SHUDO Happy Hacking!
> Muraoka Lab., School of Sci. & Eng., Waseda Univ.
>
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