Enum rustix::time::TimerfdClockId

#[repr(u32)]
#[non_exhaustive]
pub enum TimerfdClockId {
    Realtime,
    Monotonic,
    Boottime,
    RealtimeAlarm,
    BoottimeAlarm,
}

Available on crate feature time only.

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

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

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

CLOCK_BOOTTIME—Like Monotonic, but advances while suspended.

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

RealtimeAlarm

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

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, 

Feeds a slice of this type into the given Hasher.

impl PartialEq<TimerfdClockId> for TimerfdClockId

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Copy for TimerfdClockId

impl Eq for TimerfdClockId

impl StructuralEq for TimerfdClockId

impl StructuralPartialEq for TimerfdClockId