PTHREAD_SCHEDPARAM(3) Library Functions Manual PTHREAD_SCHEDPARAM(3)

pthread_setschedparam, pthread_getschedparam — thread scheduling parameter manipulation

POSIX Threads Library (libpthread, -lpthread)

#include <pthread.h>

int
pthread_setschedparam(pthread_t thread, int policy, const struct sched_param *param);

int
pthread_getschedparam(pthread_t thread, int * restrict policy, struct sched_param * restrict param);

The () and () functions set and get the scheduling parameters of individual threads. The scheduling policy for a thread can be:

First in, first out.
Round-robin.
The system default.

The thread priority (accessed via param->sched_priority) must be at least PTHREAD_MIN_PRIORITY and no more than PTHREAD_MAX_PRIORITY.

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

pthread_setschedparam() may fail if:

[]
The value specified by policy is invalid.
[]
Invalid value for scheduling parameters.
[]
Non-existent thread thread.

pthread_getschedparam() may fail if:

[]
Non-existent thread thread.

pthread_attr_getschedparam(3), sched(3)

Both functions conform to IEEE Std 1003.1-2001 (“POSIX.1”).

July 9, 2010 NetBSD 11.0