mirror of https://github.com/mkerrisk/man-pages
71 lines
2.2 KiB
Groff
71 lines
2.2 KiB
Groff
.\" Hey Emacs! This file is -*- nroff -*- source.
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.\"
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.\" Copyright (C) Tom Bjorkholm & Markus Kuhn, 1996
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.\"
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.\" This is free documentation; you can redistribute it and/or
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.\" modify it under the terms of the GNU General Public License as
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.\" published by the Free Software Foundation; either version 2 of
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.\" the License, or (at your option) any later version.
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.\"
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.\" The GNU General Public License's references to "object code"
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.\" and "executables" are to be interpreted as the output of any
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.\" document formatting or typesetting system, including
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.\" intermediate and printed output.
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.\"
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.\" This manual is distributed in the hope that it will be useful,
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.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
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.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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.\" GNU General Public License for more details.
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.\"
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.\" You should have received a copy of the GNU General Public
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.\" License along with this manual; if not, write to the Free
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.\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
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.\" USA.
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.\"
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.\" 1996-04-01 Tom Bjorkholm <tomb@mydata.se>
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.\" First version written
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.\" 1996-04-10 Markus Kuhn <mskuhn@cip.informatik.uni-erlangen.de>
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.\" revision
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.\"
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.TH SCHED_YIELD 2 1996-04-10 "Linux 1.3.81" "Linux Programmer's Manual"
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.SH NAME
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sched_yield \- yield the processor
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.SH SYNOPSIS
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.B #include <sched.h>
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.sp
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\fBint sched_yield(void);
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.fi
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.SH DESCRIPTION
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A process can relinquish the processor voluntarily without blocking by calling
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.BR sched_yield ().
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The process will then be moved to the end of the queue for its static
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priority and a new process gets to run.
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Note: If the current process is the only process in the highest
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priority list at that time, this process will continue to run after a
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call to
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.BR sched_yield ().
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POSIX systems on which
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.BR sched_yield ()
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is available define
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.I _POSIX_PRIORITY_SCHEDULING
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in <unistd.h>.
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.SH "RETURN VALUE"
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On success,
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.BR sched_yield ()
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returns 0.
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On error, \-1 is returned, and
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.I errno
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is set appropriately.
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.SH "CONFORMING TO"
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POSIX.1-2001.
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.SH "SEE ALSO"
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.BR sched_setscheduler (2)
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for a description of Linux scheduling.
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.PP
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.I Programming for the real world \- POSIX.4
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by Bill O. Gallmeister, O'Reilly & Associates, Inc., ISBN 1-56592-074-0
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