Name
pthread_attr_setschedpolicy, pthread_attr_getschedpolicy — set/get scheduling policy attribute in thread attributes object
Synopsis
#include <pthread.h>
int
pthread_attr_setschedpolicy( |
pthread_attr_t *attr, |
int policy); |
int
pthread_attr_getschedpolicy( |
pthread_attr_t *attr, |
int *policy); |
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Note |
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Compile and link with |
DESCRIPTION
The pthread_attr_setschedpolicy() function sets
the scheduling policy attribute of the thread attributes
object referred to by attr to the value specified in
policy. This
attribute determines the scheduling policy of a thread
created using the thread attributes object attr.
The supported values for policy are SCHED_FIFO, SCHED_RR, and SCHED_OTHER, with the semantics described
in sched_setscheduler(2).
The pthread_attr_getschedpolicy() returns the
scheduling policy attribute of the thread attributes object
attr in the buffer
pointed to by policy.
In order for the policy setting made by pthread_attr_setschedpolicy() to have
effect when calling pthread_create(3), the
caller must use pthread_attr_setinheritsched(3)
to set the inherit-scheduler attribute of the attributes
object attr to
PTHREAD_EXPLICIT_SCHED.
ERRORS
pthread_attr_setschedpolicy() can fail with
the following error:
- EINVAL
-
Invalid value in
policy.
POSIX.1-2001 also documents an optional ENOTSUP error ("attempt was made to set
the attribute to an unsupported value") for pthread_attr_setschedpolicy().
SEE ALSO
sched_setscheduler(2), pthread_attr_init(3), pthread_attr_setinheritsched(3), pthread_attr_setschedparam(3), pthread_create(3), pthread_setschedparam(3), pthread_setschedprio(3), pthreads(7)
COLOPHON
This page is part of release 3.52 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at
http://www.kernel.org/doc/man−pages/.
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Copyright (c) 2008 Linux Foundation, written by Michael Kerrisk <mtk.manpagesgmail.com> %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. %%%LICENSE_END |