NAME    [Toc]    [Back]

     pthread_setschedparam,   pthread_getschedparam   -    thread
scheduling parameter
 manipulation

SYNOPSIS    [Toc]    [Back]

     #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    [Toc]    [Back]

     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 at least PTHREAD_MIN_PRIORITY
and no more
     than PTHREAD_MAX_PRIORITY.

RETURN VALUES    [Toc]    [Back]

     If  successful, these functions return 0.  Otherwise, an error number is
     returned to indicate the error.

ERRORS    [Toc]    [Back]

     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    [Toc]    [Back]

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

OpenBSD      3.6                            May      1,      2000