sched_getscheduler(3RT) Realtime Library Functions sched_getscheduler(3RT)NAMEsched_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) man‐
ual 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 TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Standard │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOlibrt(3LIB), sched.h(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 5.10 5 Oct 2001 sched_getscheduler(3RT)
