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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | CONFORMING TO | EXAMPLE | SEE ALSO | COLOPHON |
PTHREAD_ATTR_SETSCHEDPOLICY(3)x Programmer's ManualAD_ATTR_SETSCHEDPOLICY(3)
pthread_attr_setschedpolicy, pthread_attr_getschedpolicy - set/get
scheduling policy attribute in thread attributes object
#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.
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.
On success, these functions return 0; on error, they return a nonzero
error number.
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().
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼─────────┤
│pthread_attr_setschedpolicy(), │ Thread safety │ MT-Safe │
│pthread_attr_getschedpolicy() │ │ │
└───────────────────────────────┴───────────────┴─────────┘
POSIX.1-2001, POSIX.1-2008.
See pthread_setschedparam(3).
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)
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Linux 2015-08-08 PTHREAD_ATTR_SETSCHEDPOLICY(3)
Pages that refer to this page: pthread_attr_init(3), pthread_attr_setinheritsched(3), pthread_attr_setschedparam(3), pthread_attr_setscope(3), pthread_getattr_default_np(3), pthread_getattr_np(3), pthread_setschedparam(3), pthread_setschedprio(3)