Enum Scheduler

#[repr(i32)]
pub enum Scheduler {
    SCHED_NORMAL = 0,
    SCHED_FIFO = 1,
    SCHED_RR = 2,
    SCHED_BATCH = 3,
    SCHED_IDLE = 5,
    SCHED_DEADLINE = 6,
}

The type of scheduler for use with sched_getscheduler and sched_setscheduler. See man_sched(7) for more details on the differences in behavior.

This type is a wrapper around the libc::SCHED_* enum.

Variants

SCHED_NORMAL = 0

The default scheduler on non-realtime linux - also known as SCHED_OTHER.

SCHED_FIFO = 1

The realtime FIFO scheduler. All FIFO threads have priority higher than 0 and preempt SCHED_NORMAL threads. Threads are executed in priority order, using first-in-first-out lists to handle two threads with the same priority.

SCHED_RR = 2

Round-robin scheduler, similar to SCHED_FIFO but with a time quantum.

SCHED_BATCH = 3

Batch scheduler, similar to SCHED_OTHER but assumes the thread is CPU intensive. The kernel applies a mild penalty to switching to this thread. As of Linux 2.6.16, the only valid priority is 0.

SCHED_IDLE = 5

The idle scheduler only executes the thread when there are idle CPUs. SCHED_IDLE threads have no progress guarantees.

SCHED_DEADLINE = 6

Deadline scheduler, attempting to provide guaranteed latency for requests. See the linux kernel docs for details.

Implementations

impl Scheduler

pub fn priority_max(&self) -> RtResult<c_int>

Get the highest priority value for a given scheduler.

pub fn priority_min(&self) -> RtResult<c_int>

Get the lowest priority value for a given scheduler.

pub fn with_params(self, params: SchedulerParams) -> ParameterizedScheduler

Create a ParameterizedScheduler with the given priority.

Trait Implementations

impl Clone for Scheduler

fn clone(&self) -> Scheduler

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Scheduler

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for Scheduler

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Scheduler

fn cmp(&self, other: &Scheduler) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Scheduler

fn eq(&self, other: &Scheduler) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Scheduler

fn partial_cmp(&self, other: &Scheduler) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TryFrom<i32> for Scheduler

type Error = PreemptRtError

The type returned in the event of a conversion error.

fn try_from(value: c_int) -> RtResult<Self>

Performs the conversion.

impl Copy for Scheduler

impl Eq for Scheduler

impl StructuralPartialEq for Scheduler