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

NAME
     pthread_getschedparam, pthread_setschedparam -- thread scheduling parame-ter parameter
     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 policy
     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_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