Date: Wed, 7 Jul 2004 10:57:36 +0200 From: "Petr Holub" <hopet@ics.muni.cz> To: <threads@freebsd.org> Subject: sem_wait as cancellation point Message-ID: <000d01c46400$732b6d60$2603fb93@KLOBOUCEK>
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Hi all,
I wonder why sem_wait is not a pthread cancellation point on
FreeBSD-5. According to Linux man page:
Cancellation points are those points in the program execution where a
test for pending cancellation requests is performed and cancellation is
executed if positive. The following POSIX threads functions are cancellation
points:
pthread_join (3)
pthread_cond_wait (3)
pthread_cond_timedwait (3)
pthread_testcancel (3)
sem_wait (3)
sigwait (3)
Currently, I'm using a workaround with sem_trywait and usleep, but
it's not as efficient as sem_wait being a cancellation point.
Thanks a lot,
Petr
PS: please keep me in Cc: as I'm not member of this list.
================================================================
Petr Holub
CESNET z.s.p.o. Supercomputing Center Brno
Zikova 4 Institute of Compt. Science
162 00 Praha 6, CZ Masaryk University
Czech Republic Botanicka 68a, 60200 Brno, CZ
e-mail: Petr.Holub@cesnet.cz phone: +420-549493944
fax: +420-541212747
e-mail: hopet@ics.muni.cz
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