PTHREADSCHEDPARAM(3) BSD Library Functions Manual PTHREADSCHEDPARAM(3)

NAME
     pptthhrreeaaddsseettsscchheeddppaarraamm, pptthhrreeaaddggeettsscchheeddppaarraamm - thread scheduling parame-
     ter manipulation

SYNOPSIS
     ##iinncclluuddee <>

     int
     pptthhrreeaaddsseettsscchheeddppaarraamm(pthreadt thread, int policy,
         const struct schedparam *param);

     int
     pptthhrreeaaddggeettsscchheeddppaarraamm(pthreadt thread, int *policy,
         struct schedparam *param);

DESCRIPTION
     The pptthhrreeaaddsseettsscchheeddppaarraamm() and pptthhrreeaaddggeettsscchheeddppaarraamm() functions set and
     get the scheduling parameters of individual threads.  The scheduling pol-
     icy for a thread can either be SCHEDFIFO (first in, first out) or
     SCHEDRR (round-robin).  The thread priority (accessed via
     param->schedpriority) must be at least PTHREADMINPRIORITY and no more
     than PTHREADMAXPRIORITY.

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

EERRRROORRSS
     pptthhrreeaaddsseettsscchheeddppaarraamm() will fail if:

     [EINVAL]           Invalid value for policy.

     [ENOTSUP]          Invalid value for scheduling parameters.

     [ESRCH]            Non-existent thread thread.

     pptthhrreeaaddggeettsscchheeddppaarraamm() will fail if:

     [ESRCH]            Non-existent thread thread.

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

BSD                               May 1, 2000                              BSD