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Command: pthread_schedparam | Section: 3 | Source: OpenBSD | File: pthread_schedparam.3
PTHREAD_SETSCHEDPARAM(3) FreeBSD Library Functions Manual
NAME
pthread_setschedparam, pthread_getschedparam - thread scheduling
parameter manipulation
SYNOPSIS
#include <pthread.h>
int
pthread_setschedparam(pthread_t thread, int policy,
const struct sched_param *param);
int
pthread_getschedparam(pthread_t thread, int *policy,
struct sched_param *param);
DESCRIPTION
The pthread_setschedparam() and pthread_getschedparam() functions set and
get the scheduling parameters of individual threads. The scheduling
policy for a thread can either be SCHED_FIFO (first in, first out) or
SCHED_RR (round-robin). The thread priority (accessed via
param->sched_priority) must be within the range returned by the
sched_get_priority_min() and sched_get_priority_max() functions.
RETURN VALUES
If successful, these functions return 0. Otherwise, an error number is
returned to indicate the error.
ERRORS
pthread_setschedparam() will fail if:
[EINVAL] Invalid value for policy.
[ENOTSUP] Invalid value for scheduling parameters.
[ESRCH] Non-existent thread thread.
pthread_getschedparam() will fail if:
[ESRCH] Non-existent thread thread.
SEE ALSO
sched_get_priority_max(3)
STANDARDS
pthread_setschedparam() and pthread_getschedparam() conform to Version 2
of the Single UNIX Specification ("SUSv2")
FreeBSD 14.1-RELEASE-p8 November 10, 2015 FreeBSD 14.1-RELEASE-p8