Enum Class 

pub enum Class {
    Realtime(RtPriorityLevel),
    BestEffort(BePriorityLevel),
    Idle,
}

A priority class, being either real-time (IOPRIO_CLASS_RT), best-effort (IOPRIO_CLASS_BE), or idle (IOPRIO_CLASS_IDLE).

Variants

Realtime(RtPriorityLevel)

The real-time class (IOPRIO_CLASS_RT), requiring elevated privileges to set to.

BestEffort(BePriorityLevel)

The best-effort class (IOPRIO_CLASS_BE), which is the default class.

Idle

The Idle class (IOPRIO_CLASS_IDLE).

All I/O done with this priority, will only be scheduled when the resource accessed, is completely idle. This is the lowest possible priority, and does not require any capability to set (with the exception of kernels before 2.6.25).

Trait Implementations

impl Clone for Class

fn clone(&self) -> Class

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Class

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

Formats the value using the given formatter.

impl Hash for Class

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 Class

fn cmp(&self, other: &Self) -> 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 Class

fn eq(&self, other: &Class) -> 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 Class

fn partial_cmp(&self, other: &Self) -> 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 Copy for Class

impl Eq for Class

impl StructuralPartialEq for Class