diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libpthread/man/Makefile.inc | 3 | ||||
| -rw-r--r-- | lib/libpthread/man/sem_wait.3 | 37 |
2 files changed, 33 insertions, 7 deletions
diff --git a/lib/libpthread/man/Makefile.inc b/lib/libpthread/man/Makefile.inc index 5dac0aa7d09..ba55564d62e 100644 --- a/lib/libpthread/man/Makefile.inc +++ b/lib/libpthread/man/Makefile.inc @@ -1,4 +1,4 @@ -# $OpenBSD: Makefile.inc,v 1.29 2012/02/24 06:37:33 guenther Exp $ +# $OpenBSD: Makefile.inc,v 1.30 2012/03/03 22:48:42 guenther Exp $ # $FreeBSD: Makefile.inc,v 1.6 1999/08/28 00:03:02 peter Exp $ # POSIX thread man files @@ -112,5 +112,6 @@ MLINKS+=flockfile.3 funlockfile.3 \ sched_get_priority_min.3 sched_get_priority_max.3 \ sem_open.3 sem_close.3 \ sem_open.3 sem_unlink.3 \ + sem_wait.3 sem_timedwait.3 \ sem_wait.3 sem_trywait.3 diff --git a/lib/libpthread/man/sem_wait.3 b/lib/libpthread/man/sem_wait.3 index e20978c628b..45a07a23f5b 100644 --- a/lib/libpthread/man/sem_wait.3 +++ b/lib/libpthread/man/sem_wait.3 @@ -1,4 +1,4 @@ -.\" $OpenBSD: sem_wait.3,v 1.6 2007/05/31 19:19:37 jmc Exp $ +.\" $OpenBSD: sem_wait.3,v 1.7 2012/03/03 22:48:42 guenther Exp $ .\" .\" Copyright (C) 2000 Jason Evans <jasone@FreeBSD.org>. .\" All rights reserved. @@ -28,7 +28,7 @@ .\" EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" .\" $FreeBSD: src/lib/libc_r/man/sem_wait.3,v 1.8 2001/10/01 16:09:09 ru Exp $ -.Dd $Mdocdate: May 31 2007 $ +.Dd $Mdocdate: March 3 2012 $ .Dt SEM_WAIT 3 .Os .Sh NAME @@ -40,6 +40,8 @@ .Ft int .Fn sem_wait "sem_t *sem" .Ft int +.Fn sem_timedwait "sem_t *sem" "const struct timespec *abstime" +.Ft int .Fn sem_trywait "sem_t *sem" .Sh DESCRIPTION The @@ -51,6 +53,17 @@ but blocks if the value of is zero, until the value is non-zero and the value can be decremented. .Pp The +.Fn sem_timedwait +function decrements (locks) the semaphore pointed to by +.Fa sem , +but blocks if the value of +.Fa sem +is zero, until either the value is non-zero and can be decremented +or the system time specified by +.Fa abstime +is reached. +.Pp +The .Fn sem_trywait function decrements (locks) the semaphore pointed to by .Fa sem @@ -58,9 +71,10 @@ only if the value is non-zero. Otherwise, the semaphore is not decremented and an error is returned. .Sh RETURN VALUES -.Rv -std sem_wait +.Rv -std sem_wait sem_timedwait sem_trywait .Sh ERRORS -.Fn sem_wait +.Fn sem_wait , +.Fn sem_timedwait , and .Fn sem_trywait will fail if: @@ -71,6 +85,16 @@ points to an invalid semaphore. .El .Pp Additionally, +.Fn sem_timedwait +will fail if: +.Bl -tag -width Er +.It Bq Er ETIMEDOUT +The semaphore value was zero and could not be decremented before +.Fa abstime +was reached. +.El +.Pp +Additionally, .Fn sem_trywait will fail if: .Bl -tag -width Er @@ -84,8 +108,9 @@ The semaphore value was zero, and thus could not be decremented. .Xr sem_open 3 , .Xr sem_post 3 .Sh STANDARDS -.Fn sem_wait +.Fn sem_wait , +.Fn sem_timedwait , and .Fn sem_trywait conform to -.St -p1003.1-96 . +.St -p1003.1-2008 . |