Add sched_get_priority_{min,max}. tested in a bulk by landry@.

input and ok from phessler@ and guenther@

3 files changed, 85 insertions, 7 deletions

diff --git a/lib/libpthread/man/Makefile.inc b/lib/libpthread/man/Makefile.inc
index 959b9b16264..7819c0f7435 100644
--- a/lib/libpthread/man/Makefile.inc
+++ b/lib/libpthread/man/Makefile.inc
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile.inc,v 1.24 2010/04/12 01:54:23 tedu Exp $
+# $OpenBSD: Makefile.inc,v 1.25 2010/11/07 13:29:21 fgsch Exp $
 # $FreeBSD: Makefile.inc,v 1.6 1999/08/28 00:03:02 peter Exp $
 
 # POSIX thread man files
@@ -59,6 +59,7 @@ MAN+=	\
 	pthread_suspend_np.3 \
 	pthread_testcancel.3 \
 	pthread_yield.3 \
+	sched_prio.3 \
 	sem_destroy.3 \
 	sem_getvalue.3 \
 	sem_init.3 \
@@ -103,6 +104,8 @@ MLINKS+=flockfile.3 funlockfile.3 \
 	pthread_testcancel.3 pthread_setcancelstate.3 \
 	pthread_testcancel.3 pthread_setcanceltype.3 \
 	pthread_getconcurrency.3 pthread_setconcurrency.3 \
+	sched_prio.3 sched_get_priority_max.3 \
+	sched_prio.3 sched_get_priority_min.3 \
 	sem_open.3 sem_close.3 \
 	sem_open.3 sem_unlink.3 \
 	sem_wait.3 sem_trywait.3
diff --git a/lib/libpthread/man/pthread_schedparam.3 b/lib/libpthread/man/pthread_schedparam.3
index f145b7e7c6e..1aa49349d4a 100644
--- a/lib/libpthread/man/pthread_schedparam.3
+++ b/lib/libpthread/man/pthread_schedparam.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: pthread_schedparam.3,v 1.2 2007/05/31 19:19:37 jmc Exp $
+.\" $OpenBSD: pthread_schedparam.3,v 1.3 2010/11/07 13:29:21 fgsch Exp $
 .\" Copyright (C) 2000 Jason Evans <jasone@freebsd.org>.
 .\" All rights reserved.
 .\"
@@ -27,7 +27,7 @@
 .\" EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
 .\" $FreeBSD: src/lib/libc_r/man/pthread_schedparam.3,v 1.4 2001/07/15 07:53:27 dd Exp $
-.Dd $Mdocdate: May 31 2007 $
+.Dd $Mdocdate: November 7 2010 $
 .Dt PTHREAD_SCHEDPARAM 3
 .Os
 .Sh NAME
@@ -53,10 +53,11 @@ The scheduling policy for a thread can either be
 (round-robin).
 The thread priority (accessed via
 .Va param->sched_priority )
-must be at least
-.Dv PTHREAD_MIN_PRIORITY
-and no more than
-.Dv PTHREAD_MAX_PRIORITY .
+must be within the range returned by the
+.Fn sched_get_priority_min
+and
+.Fn sched_get_priority_max
+functions.
 .Sh RETURN VALUES
 If successful, these functions return 0.
 Otherwise, an error number is returned to indicate the error.
@@ -81,6 +82,9 @@ will fail if:
 Non-existent thread
 .Va thread .
 .El
+.Sh SEE ALSO
+.Xr sched_get_priority_max 3 ,
+.Xr sched_get_priority_min 3
 .Sh STANDARDS
 .Fn pthread_setschedparam
 and
diff --git a/lib/libpthread/man/sched_prio.3 b/lib/libpthread/man/sched_prio.3
new file mode 100644
index 00000000000..4b15fd94e6f
--- /dev/null
+++ b/lib/libpthread/man/sched_prio.3
@@ -0,0 +1,71 @@
+.\" $OpenBSD: sched_prio.3,v 1.1 2010/11/07 13:29:21 fgsch Exp $
+.\"
+.\" Copyright (c) 2010 Federico G. Schwindt <fgsch@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for
+.\" any purpose with or without fee is hereby granted, provided that
+.\" the above copyright notice and this permission notice appear in all
+.\" copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+.\" WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+.\" WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+.\" AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+.\" DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA
+.\" OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+.\" TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+.\" PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd $Mdocdate: November 7 2010 $
+.Dt SCHED_PRIO 3
+.Os
+.Sh NAME
+.Nm sched_get_priority_max ,
+.Nm sched_get_priority_min
+.Nd get priority limits
+.Sh SYNOPSIS
+.Fd #include <sched.h>
+.Ft int
+.Fn sched_get_priority_max "int policy"
+.Ft int
+.Fn sched_get_priority_min "int policy"
+.Sh DESCRIPTION
+The
+.Fn sched_get_priority_max
+and
+.Fn sched_get_priority_min
+functions return the maximum and minimum priority values, respectively,
+for the scheduling policy specified by
+.Fa policy .
+.Pp
+The scheduling policy for a thread can either be
+.Dv SCHED_FIFO
+(first in, first out),
+.Dv SCHED_RR
+(round-robin) or
+.Dv SCHED_OTHER .
+.Sh RETURN VALUES
+Upon successful completion,
+.Fn sched_get_priority_max
+and
+.Fn sched_get_priority_min
+return the maximum and minimum priority values, respectively.
+Otherwise, a value of -1 is returned and errno is set to indicate the error.
+.Sh ERRORS
+The
+.Fn sched_get_priority_max
+and
+.Fn sched_get_priority_min
+functions will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+Invalid value for
+.Fa policy .
+.Sh STANDARDS
+.Fn sched_get_priority_max
+and
+.Fn sched_get_priority_min
+conforms to
+.St -p1003.1-2008 .
+.Pp
+This implementation does not support process scheduling.