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Man page of PTHREAD_ATTR_SETSCHEDPOLICY
PTHREAD_ATTR_SETSCHEDPOLICY
Section: Linux Programmer's Manual (3)
Updated: 2015-08-08
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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);
Compile and link with -pthread.
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.
RETURN VALUE
On success, these functions return 0;
on error, they return a nonzero error number.
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
|
CONFORMING TO
POSIX.1-2001, POSIX.1-2008.
EXAMPLE
See
pthread_setschedparam(3).
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 4.09 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/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- ATTRIBUTES
-
- CONFORMING TO
-
- EXAMPLE
-
- SEE ALSO
-
- COLOPHON
-
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