Struct AtomicInstant 

pub struct AtomicInstant(/* private fields */);

Available on crate feature std only.

A monotonic instant stored in a single AtomicU64 as nanoseconds since a shared process epoch (see now_monotonic_nanos).

Lock-free to read and update, useful for recency tracking (e.g. “least recently used”) without a Mutex<Instant>. Reads/writes use relaxed ordering, so it is a heuristic timestamp, not a synchronization point.

Implementations

impl AtomicInstant

pub fn now() -> Self

Create an AtomicInstant set to now.

pub fn set_now(&self)

Set this instant to now.

pub fn as_nanos(&self) -> u64

Nanoseconds since the shared epoch, for cheap ordering comparisons.

pub fn elapsed(&self) -> Duration

Duration elapsed since this instant (zero if it is in the future).

pub fn to_instant(&self) -> Instant

Convert back to a real Instant.

Trait Implementations

impl Debug for AtomicInstant

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

Formats the value using the given formatter.

impl Default for AtomicInstant

fn default() -> Self

Returns the “default value” for a type.

impl From<&AtomicInstant> for Instant

fn from(value: &AtomicInstant) -> Self

Converts to this type from the input type.