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Linux 2.6 - man page for sched_getparam (linux section 3posix)

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

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 speci-
       fied 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 vol-
       ume 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 orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003				SCHED_GETPARAM(P)


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