Enum TimerfdClockId

#[non_exhaustive]
#[repr(u32)]
pub enum TimerfdClockId {
    Realtime = 0,
    Monotonic = 1,
    Boottime = 7,
    RealtimeAlarm = 8,
    BoottimeAlarm = 9,
}

CLOCK_* constants for use with timerfd_create.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Realtime = 0

CLOCK_REALTIME—A clock that tells the “real” time.

This is a clock that tells the amount of time elapsed since the Unix epoch, 1970-01-01T00:00:00Z. The clock is externally settable, so it is not monotonic. Successive reads may see decreasing times, so it isn’t reliable for measuring durations.

Monotonic = 1

CLOCK_MONOTONIC—A clock that tells an abstract time.

Unlike Realtime, this clock is not based on a fixed known epoch, so individual times aren’t meaningful. However, since it isn’t settable, it is reliable for measuring durations.

This clock does not advance while the system is suspended; see Boottime for a clock that does.

Boottime = 7

CLOCK_BOOTTIME—Like Monotonic, but advances while suspended.

This clock is similar to Monotonic, but does advance while the system is suspended.

RealtimeAlarm = 8

CLOCK_REALTIME_ALARM—Like Realtime, but wakes a suspended system.

This clock is like Realtime, but can wake up a suspended system.

Use of this clock requires the CAP_WAKE_ALARM Linux capability.

BoottimeAlarm = 9

CLOCK_BOOTTIME_ALARM—Like Boottime, but wakes a suspended system.

This clock is like Boottime, but can wake up a suspended system.

Use of this clock requires the CAP_WAKE_ALARM Linux capability.

Trait Implementations

impl Clone for TimerfdClockId

fn clone(&self) -> TimerfdClockId

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TimerfdClockId

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

Formats the value using the given formatter.

impl Hash for TimerfdClockId

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 PartialEq for TimerfdClockId

fn eq(&self, other: &TimerfdClockId) -> 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 Copy for TimerfdClockId

impl Eq for TimerfdClockId

impl StructuralPartialEq for TimerfdClockId