Name
sched_yield — yield the processor
DESCRIPTION
A process can relinquish the processor voluntarily without
blocking by calling sched_yield(). The process will then be
moved to the end of the queue for its static priority and a
new process gets to run.
![[Note]](../stylesheet/note.png) |
Note |
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If the current process is the only process in the
highest priority list at that time, this process will
continue to run after a call to sched_yield().
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POSIX systems on which sched_yield() is available define
_POSIX_PRIORITY_SCHEDULING in
<unistd.h>.
RETURN VALUE
On success, sched_yield()
returns 0. On error, −1 is returned, and errno is set appropriately.
ERRORS
In the Linux implementation, sched_yield() always succeeds.
CONFORMING TO
POSIX.1-2001.
SEE ALSO
sched_setscheduler(2) for a
description of Linux scheduling.
Programming for the real world
− POSIX.4 by Bill O. Gallmeister, O'Reilly
& Associates, Inc., ISBN 1-56592-074-0
Copyright (C) Tom Bjorkholm & Markus Kuhn, 1996
This is free documentation; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
The GNU General Public License's references to "object code"
and "executables" are to be interpreted as the output of any
document formatting or typesetting system, including
intermediate and printed output.
This manual is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this manual; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
USA.
1996-04-01 Tom Bjorkholm <tomb@mydata.se>
First version written
1996-04-10 Markus Kuhn <mskuhn@cip.informatik.uni-erlangen.de>
revision
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