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Realtime Library Functionssched_getscheduler(3RT)


NAME

 sched_getscheduler - get scheduling policy

SYNOPSIS

 
cc [ flag... ] file... -lrt [ library... ]
#include <sched.h> 
int sched_getscheduler(pid_t pid);

DESCRIPTION

 

The sched_getscheduler() function returns the scheduling policy of the process specified by pid. If the value of pid is negative, the behavior of the sched_getscheduler() function is unspecified.

The values that can be returned by sched_getscheduler() are defined in the header <sched.h> and described on the sched_setscheduler(3RT) manual page.

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

If pid is 0, the scheduling policy will be returned for the calling process.

RETURN VALUES

 

Upon successful completion, the sched_getscheduler() function returns the scheduling policy of the specified process. If unsuccessful, the function returns -1 and sets errno to indicate the error.

ERRORS

 

The sched_getscheduler() function will fail if:

ENOSYS
The sched_getscheduler() function is not supported by the system.
EPERM
The requesting process does not have permission to determine the scheduling policy 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 TYPEATTRIBUTE VALUE
Interface StabilityStandard
MT-LevelMT-Safe

SEE ALSO

 

librt(3LIB), sched(3HEAD), sched_getparam(3RT), sched_setparam(3RT), sched_setscheduler(3RT), attributes(5)

NOTES

 

Solaris 2.6 was the first release to support libposix4/librt. Prior to this release, this function always returned -1 and set errno to ENOSYS.


SunOS 5.9Go To TopLast Changed 5 Oct 2001

 
      
      
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.