Date: 31 Jan 2003 17:37:05 -0500 From: Joe Marcus Clarke <marcus@marcuscom.com> To: Franz Klammer <klammer@webonaut.com> Cc: FreeBSD GNOME Users <gnome@freebsd.org> Subject: Re: patch-gst::cothreads.c -> COTHREAD_MAXTHREADS 8 didn't work for me Message-ID: <1044052624.46355.27.camel@shumai.marcuscom.com> In-Reply-To: <1044052594.48118.16.camel@ds9.webonaut.com> References: <1044047356.8610.2.camel@ds9.webonaut.com> <1044050271.46355.0.camel@shumai.marcuscom.com> <1044051089.8610.4.camel@ds9.webonaut.com> <1044051147.46355.13.camel@shumai.marcuscom.com> <1044051605.48118.1.camel@ds9.webonaut.com> <1044051435.46355.17.camel@shumai.marcuscom.com> <1044052594.48118.16.camel@ds9.webonaut.com>
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--=-OCQJoJV6n73Dd78IcVG7 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Fri, 2003-01-31 at 17:36, Franz Klammer wrote: > Am Fr, 2003-01-31 um 23.17 schrieb Joe Marcus Clarke: > > On Fri, 2003-01-31 at 17:20, Franz Klammer wrote: > > > Am Fr, 2003-01-31 um 23.12 schrieb Joe Marcus Clarke: > > > > On Fri, 2003-01-31 at 17:11, Franz Klammer wrote: > > > > > Am Fr, 2003-01-31 um 22.57 schrieb Joe Marcus Clarke: > > > > > > On Fri, 2003-01-31 at 16:09, Franz Klammer wrote: > > > > > > > hi! > > > > > > >=20 > > > > > > > COTHREAD_MAXTHREADS 8 changed by gstreamer->patch-gst::cothre= ads.c=20 > > > > > > > didn't work for me. if i don't revert them to the original va= lue > > > > > > > and i try to make a thumbnail from an mpeg gst-thumbnail dies= with > > > > > > > this error-message: > > > > > > >=20 > > > > > > > GStreamer-WARNING **: cothread_create: attempt to=20 > > > > > > > create > COTHREAD_MAXTHREADS > > > > > >=20 > > > > > > If you remove this patch, do you then get the core dump about t= hread > > > > > > contexts? > > > > >=20 > > > > > YES: > > > > > Fatal error 'longjmp()ing between thread contexts is undefined by= POSIX > > > > > 1003.1' at line 72 in file /usr/src/lib/libc_r/uthread/uthread_jm= p.c > > > > > (errno =3D 22) > > > > > Abbruch (core dumped) > > > >=20 > > > > Where do you get the former error? I played with gst-thumbnail, an= d > > > > never got it. If you bump the threads up to 16, but keep the STACK= _SIZE > > > > at 1 MB, do both problems go away? > > > >=20 > > >=20 > > > exactly, yes. > >=20 > > Okay, just to be clear, if I change the patch to set max threads to 16 > > while keeping the stack size at 1 MB, you'll be happy? > >=20 >=20 > can't say how much. :-) >=20 > ok, seriously: yes. I'll fix it now. >=20 > a guess from someone who didn't really know much about longjumps and=20 > such things: i it possible that this maybe only occur on -CURRENT? No, actually this is a FreeBSD-specific thing. Take a look at /usr/src/lib/libc_r/uthread/pthread_private.h. Look for PTHREAD_STACK_INITIAL. That is the stack size of thread[0] or the main thread. That stack size cannot exceed 1 MB. However, you can certainly create a pthread, and increase its stack size up to whatever your max stack size is. Joe >=20 > franz >=20 > > Joe > >=20 > > >=20 > > > franz. > > >=20 > > > > Joe > > > >=20 --=20 PGP Key : http://www.marcuscom.com/pgp.asc --=-OCQJoJV6n73Dd78IcVG7 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (FreeBSD) iD8DBQA+OvqQb2iPiv4Uz4cRAj83AJ90ZNIbYqmAkvB368eThfw4qgY5GQCfeNa0 gU8G/MBkHN2Fn7gTpzGOyxI= =7cR6 -----END PGP SIGNATURE----- --=-OCQJoJV6n73Dd78IcVG7-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-gnome" in the body of the message
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