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);
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_setscheduler(2).
The
pthread_attr_getschedpolicy() returns the scheduling policy attribute
of the thread attributes object
attr in the buffer pointed to by
policy.
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().
POSIX.1-2001.
EXAMPLE¶
See
pthread_setschedparam(3).
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¶
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man-pages project. A
description of the project, and information about reporting bugs, can be found
at
http://www.kernel.org/doc/man-pages/.