osx man page for pthread_setschedparam

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 schedul-
     ing 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