PTHREAD_SCHEDPARAM(3) BSD Library Functions Manual PTHREAD_SCHEDPARAM(3)NAME
pthread_getschedparam, pthread_setschedparam — thread scheduling parame‐
ter manipulation
SYNOPSIS
#include <pthread.h>
int
pthread_getschedparam(pthread_t thread, int *restrict policy,
struct sched_param *restrict param);
int
pthread_setschedparam(pthread_t thread, int policy,
const struct sched_param *param);
DESCRIPTION
The pthread_getschedparam() and pthread_setschedparam() functions get and
set the scheduling parameters of individual threads. The scheduling pol‐
icy 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 at least PTHREAD_MIN_PRIORITY and no more
than PTHREAD_MAX_PRIORITY.
RETURN VALUES
If successful, these functions return 0. Otherwise, an error number is
returned to indicate the error.
ERRORSpthread_getschedparam() will fail if:
[ESRCH] Non-existent thread thread.
pthread_setschedparam() will fail if:
[EINVAL] Invalid value for policy.
[ENOTSUP] Invalid value for scheduling parameters.
[ESRCH] Non-existent thread thread.
STANDARDSpthread_setschedparam() and pthread_getschedparam() conform to Version 2
of the Single UNIX Specification (“SUSv2”)
BSD May 1, 2000 BSD
