Re: guile threading deadlock

[ludo@gnu.org (Ludovic Courtès)]

Hello!

"Linas Vepstas" <linasvepstas@gmail.com> writes:

> I've got a little deadlock problem w/ guile.  Here's the pseudocode:
>
> for (i=0; i<10 i++)  {
>    pthread_create (load_scm, expr[i]);
> }
>
> void load_scm (char * expr) {
>    scm_init_guile();
>    scm_c_eval(expr);
>    /* and pthread exit now that we're done */
> }
>
> The expr's are entirely scm lambda defines of one sort or another,
> and do not do any actual computation.

Can you try to provide actual code to reproduce the problem?  :-)
That would be great.

Did you compile Guile with thread support (Debian's package doesn't have
thread support)?  If not, that may be the problem.  See
http://thread.gmane.org/gmane.lisp.guile.devel/7754 for details.

> #12 0xf7828a43 in on_thread_exit (v=0x9179e18) at threads.c:505
> #13 0xf7e3bbb0 in __nptl_deallocate_tsd ()
>    from /lib/tls/i686/cmov/libpthread.so.0
> #14 0xf7e3c509 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
> #15 0xf7c3ae5e in clone () from /lib/tls/i686/cmov/libc.so.6
>
> Not sure who called clone ... not my code ... this is confusing. ...

The C library.

Hope this helps,
Ludo'.