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( |
const pthread_attr_t *attr, |
int *policy); |
![[Note]](../stylesheet/note.png) |
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(7).
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 also documents an optional ENOTSUP error ("attempt was made to set
the attribute to an unsupported value") for pthread_attr_setschedpolicy().
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
pthread_attr_setschedpolicy(),
pthread_attr_getschedpolicy() |
Thread safety | MT-Safe |
SEE ALSO
pthread_attr_init(3), pthread_attr_setinheritsched(3), pthread_attr_setschedparam(3), pthread_create(3), pthread_setschedparam(3), pthread_setschedprio(3), pthreads(7), sched(7)
COLOPHON
This page is part of release 4.07 of the Linux man-pages project. A
description of the project, information about reporting bugs,
and the latest version of this page, can be found at
https://www.kernel.org/doc/man−pages/.
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