PTHREAD_ATTR_GETSCHEDPARAM(3) Library Functions Manual PTHREAD_ATTR_GETSCHEDPARAM(3)

pthread_attr_getschedparam, pthread_attr_setschedparam, pthread_attr_getschedpolicy, pthread_attr_setschedpolicy — get and set scheduling attributes

POSIX Threads Library (libpthread, -lpthread)

#include <pthread.h>

int
pthread_attr_getschedparam(const pthread_attr_t * restrict attr, struct sched_param * restrict param);

int
pthread_attr_setschedparam(pthread_attr_t *attr, const struct sched_param *param);

int
pthread_attr_getschedpolicy(const pthread_attr_t * restrict attr, int * restrict policy);

int
pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);

The () and () functions obtain and set the scheduling parameter attribute in the attr object. The sched_param structure is defined in <sched.h>. At minimum this structure contains only a single member, sched_priority. Refer to pthread_schedparam(3) and sched(3) for additional details.

The () and () functions get and set the scheduling policy attribute, policy, in the attr object. The supported values of policy are the same ones listed in pthread_schedparam(3).

If successful, all described functions return 0. Otherwise, an error number is returned to indicate the error.

The pthread_attr_getschedparam() function may fail if:

[]
An invalid parameter was specified.

The pthread_attr_setschedparam() function may fail if:

[]
An invalid parameter was specified.
[]
There was insufficient memory.

The pthread_attr_setschedpolicy() function may fail if:

[]
There was insufficient memory.
[]
An unsupported policy was specified.

No errors are defined for pthread_attr_getschedpolicy().

pthread_attr(3), pthread_schedparam(3), sched(3)

These functions conform to IEEE Std 1003.1-2008 (“POSIX.1”).

July 7, 2010 NetBSD 11.0