This document is a Mac OS X manual page. Manual pages are a command-line technology for providing documentation. You can view these manual pages locally using the man(1) command. These manual pages come from many different sources, and thus, have a variety of writing styles.

For more information about the manual page format, see the manual page for manpages(5).

PTHREAD_SCHEDPARAM(3)    BSD Library Functions Manual    PTHREAD_SCHEDPARAM(3)

NAME
     pthread_getschedparam, pthread_setschedparam -- thread scheduling parameter 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 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 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.

ERRORS
     pthread_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.

STANDARDS
     pthread_setschedparam() and pthread_getschedparam() conform to Version 2 of the Single UNIX
     Specification (``SUSv2'')

BSD                               May 1, 2000                              BSD