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PTHREAD_ATTR_GETSCHEDPARAM(P)	    POSIX Programmer's Manual	    PTHREAD_ATTR_GETSCHEDPARAM(P)

NAME
       pthread_attr_getschedparam,  pthread_attr_setschedparam	-  get	and  set  the  schedparam
       attribute

SYNOPSIS
       #include <pthread.h>

       int pthread_attr_getschedparam(const pthread_attr_t *restrict attr,
	      struct sched_param *restrict param);
       int pthread_attr_setschedparam(pthread_attr_t *restrict attr,
	      const struct sched_param *restrict param);

DESCRIPTION
       The  pthread_attr_getschedparam(),  and	pthread_attr_setschedparam()  functions,  respec-
       tively,	shall  get  and set the scheduling parameter attributes in the attr argument. The
       contents of the param structure are defined in the <sched.h> header.  For  the  SCHED_FIFO
       and SCHED_RR policies, the only required member of param is sched_priority.

       For  the SCHED_SPORADIC policy, the required members of the param structure are sched_pri-
       ority,	 sched_ss_low_priority,    sched_ss_repl_period,    sched_ss_init_budget,     and
       sched_ss_max_repl. The specified sched_ss_repl_period must be greater than or equal to the
       specified sched_ss_init_budget for the function to succeed; if it is not, then  the  func-
       tion  shall  fail.  The value of sched_ss_max_repl shall be within the inclusive range [1,
       {SS_REPL_MAX}] for the function to succeed; if not, the function shall fail.

RETURN VALUE
       If successful, the pthread_attr_getschedparam() and pthread_attr_setschedparam() functions
       shall return zero; otherwise, an error number shall be returned to indicate the error.

ERRORS
       The pthread_attr_setschedparam() function may fail if:

       EINVAL The value of param is not valid.

       ENOTSUP
	      An attempt was made to set the attribute to an unsupported value.

       These functions shall not return an error code of [EINTR].

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       After  these  attributes  have  been  set,  a  thread  can  be  created with the specified
       attributes using pthread_create(). Using these routines does not affect the  current  run-
       ning thread.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       pthread_attr_destroy()	,   pthread_attr_getscope()  ,	pthread_attr_getinheritsched()	,
       pthread_attr_getschedpolicy()  ,  pthread_create()  ,  the  Base  Definitions  volume   of
       IEEE Std 1003.1-2001, <pthread.h>, <sched.h>

COPYRIGHT
       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information Technology  --  Portable	Operating  System
       Interface  (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
       the Institute of Electrical and Electronics Engineers, Inc and  The  Open  Group.  In  the
       event  of  any  discrepancy  between this version and the original IEEE and The Open Group
       Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003		    PTHREAD_ATTR_GETSCHEDPARAM(P)
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