установить / получить атрибут политики планирования в объекте атрибутов потока (set/get scheduling policy attribute in thread attributes object)
Имя (Name)
pthread_attr_setschedpolicy, pthread_attr_getschedpolicy -
set/get scheduling policy attribute in thread attributes object
Синопсис (Synopsis)
#include <pthread.h>
int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);
int pthread_attr_getschedpolicy(const pthread_attr_t *restrict attr,
int *restrict policy);
Compile and link with -pthread.
Описание (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.
Возвращаемое значение (Return value)
On success, these functions return 0; on error, they return a
nonzero error number.
Ошибки (Error)
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().
Атрибуты (Attributes)
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() │ │ │
└──────────────────────────────────────┴───────────────┴─────────┘
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008.
Примеры (Examples)
See pthread_setschedparam(3).
Смотри также (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)
