Enum rustix::time::TimerfdClockId

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

CLOCK_* constants for use with timerfd_create.

Variants (Non-exhaustive)§

This enum is marked as 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.
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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.

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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.

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Boottime = 7

CLOCK_BOOTTIME—Like Monotonic, but advances while suspended.

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

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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.

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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§

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impl Clone for TimerfdClockId

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fn clone(&self) -> TimerfdClockId

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TimerfdClockId

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

Formats the value using the given formatter. Read more
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impl Hash for TimerfdClockId

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for TimerfdClockId

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for TimerfdClockId

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impl Eq for TimerfdClockId

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impl StructuralPartialEq for TimerfdClockId

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Copy,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.