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x SuSE Linux 13.1-RELEASEx
PTHREAD_ATTR_SETSCHEDPOLICYLinux Programmer's MaPTHREAD_ATTR_SETSCHEDPOLICY(3)
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.1-2001 also documents an optional ENOTSUP error ("attempt was
made to set the attribute to an unsupported value") for
pthread_attr_setschedpolicy().
ATTRIBUTES
Multithreading (see pthreads(7))
The pthread_attr_setschedpolicy() and pthread_attr_getschedpolicy()
functions are thread-safe.
CONFORMING TO
POSIX.1-2001.
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 3.69 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
http://www.kernel.org/doc/man-pages/.
Linux 2014-05-21 PTHREAD_ATTR_SETSCHEDPOLICY(3)
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