NAME

       sched_getparam - get scheduling parameters (REALTIME)

SYNOPSIS

       #include <sched.h>

       int sched_getparam(pid_t pid, struct sched_param *param);

DESCRIPTION

       The sched_getparam() function shall return the scheduling parameters of a process specified by pid in the
       sched_param structure pointed to by param.

       If  a  process  specified  by  pid  exists,  and  if  the  calling process has permission, the scheduling
       parameters for the process whose process ID is equal to pid shall be returned.

       If pid is zero, the scheduling parameters for the calling process shall be returned. The behavior of  the
       sched_getparam() function is unspecified if the value of pid is negative.

RETURN VALUE

       Upon   successful   completion,  the  sched_getparam()  function  shall  return  zero.  If  the  call  to
       sched_getparam() is unsuccessful, the function shall return a value of -1 and set errno to  indicate  the
       error.

ERRORS

       The sched_getparam() function shall fail if:

       EPERM  The  requesting  process  does  not  have  permission  to  obtain the scheduling parameters of the
              specified process.

       ESRCH  No process can be found corresponding to that specified by pid.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       sched_getscheduler()  ,  sched_setparam()  ,  sched_setscheduler()  ,  the  Base  Definitions  volume  of
       IEEE Std 1003.1-2001, <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
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group                                   2003                                     SCHED_GETPARAM(P)