Date: Thu, 10 Jul 2003 16:25:17 +0800 From: "David Xu" <davidxu@viatech.com.cn> To: "Kai Mosebach" <kai.mosebach@freshx.de>, <freebsd-threads@freebsd.org> Subject: Re: Kse/Thr _exit implementation Message-ID: <002601c346bc$cb49c030$f001a8c0@davidw2k> References: <000401c346b6$67b911c0$0100a8c0@alpha>
next in thread | previous in thread | raw e-mail | index | archive | help
----- Original Message -----=20
From: "Kai Mosebach" <kai.mosebach@freshx.de>
To: <freebsd-threads@freebsd.org>
Sent: Thursday, July 10, 2003 3:39 PM
Subject: Kse/Thr _exit implementation
> Hi again,
>=20
> i have two other questions regarding the kse/thr implementation:
>=20
> 1.) often i see, that the linuxthreads implematation has problems with
> the
> exit() function, if not all threads are finished. Is this fixed in kse =
?
>=20
exit() is OK on FreeBSD for multiple threads process, I never heard
threaded process has exit() problem with libkse/libthr.
> 2.) i found this piece of code in the sapdb, which had to be enabled,
> when i used linuxthreads, but with kse it just loops around, so i
> removed it. Is this problem described here lthreads only ?
>=20
> cheers=20
>=20
> ------------------------snip
>=20
> #if defined LINUX || (defined FREEBSD && defined LINUXTHREADS &&
> !defined FREEBSD_THREADS)
> if ( pThreadObj->StackSize !=3D 0 ) /* PTS 1106187 */
> {
> /*
> * Some words.... PTS 1105262/1105263
> * There was a LINUX specific crash without this YIELD_CALL loop.
> The linuxthread=20
> * pthread manager does not synchronize the pthread_join() call =
with
> the actions
> * of freeing internal references to the joined thread. Since =
these
> references are
> * situated on the pthread stack, freeing this stack results in
> program crashes depending
> * on the scheduling. Forcing the join to wait until the thread
> actually was terminating
> * solves part of this problem. Creating another dummy thread =
solves
> the synchronization.
> */
> /* PTS 1105678 poll after join not before join... and use kill
> instead of pthread_kill */
> while ( kill( pThreadObj->thread_id, 0) =3D=3D 0 )
> {
> sleep(1); /* YIELD_CALL; */ /* let him finsh */
> }
> }
> #endif
>=20
> _______________________________________________
> freebsd-threads@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-threads
> To unsubscribe, send any mail to =
"freebsd-threads-unsubscribe@freebsd.org"
>
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?002601c346bc$cb49c030$f001a8c0>