The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008, 2016 Edition
Copyright © 2001-2016 The IEEE and The Open Group

#### NAME

> sched_get_priority_max, sched_get_priority_min - get priority limits (REALTIME)

#### SYNOPSIS

> ``[PS|TPS] #include <sched.h>
> int sched_get_priority_max(int` policy`);
> int sched_get_priority_min(int` policy`);``
> `
> `

#### DESCRIPTION

> The sched_get_priority_max() and sched_get_priority_min() functions shall return the appropriate maximum or minimum, respectively, for the scheduling policy specified by policy.

> The value of policy shall be one of the scheduling policy values defined in <sched.h>.

#### RETURN VALUE

> If successful, the sched_get_priority_max() and sched_get_priority_min() functions shall return the appropriate maximum or minimum values, respectively. If unsuccessful, they shall return a value of -1 and set errno to indicate the error.

#### ERRORS

> The sched_get_priority_max() and sched_get_priority_min() functions shall fail if:

> [EINVAL]
>   The value of the policy parameter does not represent a defined scheduling policy.

The following sections are informative.

#### EXAMPLES

> None.

#### APPLICATION USAGE

> None.

#### RATIONALE

> None.

#### FUTURE DIRECTIONS

> None.

#### SEE ALSO

> sched_getparam, sched_setparam, sched_getscheduler, sched_rr_get_interval, sched_setscheduler

> XBD <sched.h>

#### CHANGE HISTORY

> First released in Issue 5. Included for alignment with the POSIX Realtime Extension.

#### Issue 6

> These functions are marked as part of the Process Scheduling option.

> The [ENOSYS] error condition has been removed as stubs need not be provided if an implementation does not support the Process Scheduling option.

> The [ESRCH] error condition has been removed since these functions do not take a pid argument.

> IEEE Std 1003.1-2001/Cor 1-2002, item XSH/TC1/D6/52 is applied, changing the PS margin code in the SYNOPSIS to PS|TPS.

End of informative text.

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