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author | dufault <dufault@FreeBSD.org> | 1998-03-28 11:51:01 +0000 |
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committer | dufault <dufault@FreeBSD.org> | 1998-03-28 11:51:01 +0000 |
commit | 8ed0defc6e5c9d291026302e0d45357454484c5d (patch) | |
tree | 805e852c0dbabdcdb6254773c9023caa32928e3a /lib/libc/sys/sched_yield.2 | |
parent | cd450d67141a2e84500ff624dc9d39c255a7de77 (diff) | |
download | FreeBSD-src-8ed0defc6e5c9d291026302e0d45357454484c5d.zip FreeBSD-src-8ed0defc6e5c9d291026302e0d45357454484c5d.tar.gz |
Finish _POSIX_PRIORITY_SCHEDULING. Needs P1003_1B and
_KPOSIX_PRIORITY_SCHEDULING options to work. Changes:
Change all "posix4" to "p1003_1b". Misnamed files are left
as "posix4" until I'm told if I can simply delete them and add
new ones;
Add _POSIX_PRIORITY_SCHEDULING system calls for FreeBSD and Linux;
Add man pages for _POSIX_PRIORITY_SCHEDULING system calls;
Add options to LINT;
Minor fixes to P1003_1B code during testing.
Diffstat (limited to 'lib/libc/sys/sched_yield.2')
-rw-r--r-- | lib/libc/sys/sched_yield.2 | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/lib/libc/sys/sched_yield.2 b/lib/libc/sys/sched_yield.2 new file mode 100644 index 0000000..b4ea28c --- /dev/null +++ b/lib/libc/sys/sched_yield.2 @@ -0,0 +1,59 @@ +.\" $Id:$ +.\" Copyright (c) 1998 HD Associates, Inc. +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd Mar 12, 1998 +.Dt SCHED_YIELD 2 +.Os BSD 4 +.Sh NAME +.Nm sched_yield +.Nd yield processor +.Sh SYNOPSIS +.Fd #include <sched.h> +.Ft int +.Fn sched_yield void +.Sh DESCRIPTION +The +.Fn sched_yield +function forces the running process to relinquish the processor until it +again becomes the head of its process list. It takes no arguments. +.Sh RETURN +The +.Fn sched_yield +function will return zero if it completes successfully, or it +will return a value of -1 and set +.Va errno +to indicate the error. +.Sh ERRORS +On failure +.Va errno +will be set to the corresponding value: +.Bl -tag -width [EFAULT] +.It Bq Er ENOSYS +The system is not configured to support this functionality. +.Sh STANDARDS +The +.Fn sched_yield +function conforms to +.St -p1003.1b-93 . |