sched_getparam(3c) [opensolaris man page]

sched_getparam(3C)					   Standard C Library Functions 					sched_getparam(3C)

NAME

       sched_getparam - get scheduling parameters

SYNOPSIS

       #include <sched.h>

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

DESCRIPTION

       The  sched_getparam()  function	returns the scheduling parameters of a process specified by pid in the sched_param structure pointed to by
       param. The only required member of param is sched_priority.

       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 will be returned.

       If  pid is 0, the scheduling parameters for the calling process will be returned. The behavior of the sched_getparam() function is unspeci-
       fied if the value of pid is negative.

RETURN VALUES

       Upon successful completion, the sched_getparam() function returns 0. If the call to sched_getparam() is unsuccessful, the function  returns
       -1 and sets errno to indicate the error.

ERRORS

       The  sched_getparam() function will 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.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |ATTRIBUTE TYPE		     |ATTRIBUTE VALUE		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+
       |Standard		     |See standards(5). 	   |
       +-----------------------------+-----------------------------+

SEE ALSO

       librt(3LIB), sched.h(3HEAD), sched_getscheduler(3C), sched_setparam(3C), sched_setscheduler(3C), attributes(5), standards(5)

SunOS 5.11							    1 Apr 2008							sched_getparam(3C)

SCHED_SETPARAM(2)					     Linux Programmer's Manual						 SCHED_SETPARAM(2)

NAME

       sched_setparam, sched_getparam - set and get scheduling parameters

SYNOPSIS

       #include <sched.h>

       int sched_setparam(pid_t pid, const struct sched_param *param);

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

       struct sched_param {
	   ...
	   int sched_priority;
	   ...
       };

DESCRIPTION

       sched_setparam()  sets  the scheduling parameters associated with the scheduling policy for the process identified by pid.  If pid is zero,
       then the parameters of the calling process are set.  The interpretation of the argument param depends  on  the  scheduling  policy  of  the
       process identified by pid.  See sched_setscheduler(2) for a description of the scheduling policies supported under Linux.

       sched_getparam() retrieves the scheduling parameters for the process identified by pid.	If pid is zero, then the parameters of the calling
       process are retrieved.

       sched_setparam() checks the validity of param for the scheduling policy of the process.	The value param->sched_priority  must  lie  within
       the range given by sched_get_priority_min(2) and sched_get_priority_max(2).

       For a discussion of the privileges and resource limits related to scheduling priority and policy, see sched_setscheduler(2).

       POSIX systems on which sched_setparam() and sched_getparam() are available define _POSIX_PRIORITY_SCHEDULING in <unistd.h>.

RETURN VALUE

       On success, sched_setparam() and sched_getparam() return 0.  On error, -1 is returned, and errno is set appropriately.

ERRORS

       EINVAL The argument param does not make sense for the current scheduling policy.

       EPERM  The calling process does not have appropriate privileges (Linux: does not have the CAP_SYS_NICE capability).

       ESRCH  The process whose ID is pid could not be found.

CONFORMING TO

       POSIX.1-2001.

SEE ALSO

       getpriority(2), nice(2), sched_get_priority_max(2), sched_get_priority_min(2), sched_getaffinity(2), sched_getscheduler(2),
       sched_setaffinity(2), sched_setscheduler(2), setpriority(2), capabilities(7)

       Programming for the real world - POSIX.4 by Bill O. Gallmeister, O'Reilly & Associates, Inc., ISBN 1-56592-074-0.

COLOPHON

       This page is part of release 3.44 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2006-03-23							 SCHED_SETPARAM(2)