PTHREAD_SCHEDPARAM(3)     OpenBSD Programmer's Manual    PTHREAD_SCHEDPARAM(3)

NAME
     pthread_setschedparam, pthread_getschedparam - thread scheduling parame-
     ter 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 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.

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.

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

OpenBSD 4.1                       May 1, 2000                                1
