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SCHED_GETPARAM(3P)         POSIX Programmer's Manual        SCHED_GETPARAM(3P)

PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the  corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.
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 unspeci-
       fied 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(3P)