pub(crate) struct AtomicOptTimestamp {
latest: AtomicU64,
}
Expand description
An object for determining whether an event happened, and if yes, when it happened.
Every Timestamp
has internal mutability. A timestamp can move
forward in time, but never backwards.
Internally, it uses the coarsetime
crate to represent times in a way
that lets us do atomic updates.
Fields§
§latest: AtomicU64
A timestamp (from coarsetime
) describing when this timestamp
was last updated.
I’d rather just use [coarsetime::Instant
], but that doesn’t have
an atomic form.
Implementations§
Source§impl AtomicOptTimestamp
impl AtomicOptTimestamp
Sourcepub(crate) fn update_if_none(&self)
pub(crate) fn update_if_none(&self)
If the timestamp is currently unset, then set it to the current time. Otherwise leave it alone.
Sourcepub(crate) fn time_since_update(&self) -> Option<Duration>
pub(crate) fn time_since_update(&self) -> Option<Duration>
Return the time since update
was last called.
Return None
if update was never called.
Sourcepub(crate) fn time_since_update_at(&self, now: Instant) -> Option<Duration>
pub(crate) fn time_since_update_at(&self, now: Instant) -> Option<Duration>
Return the time between the time when update
was last
called, and the time now
.
Return None
if update
was never called, or now
is before
that time.
Trait Implementations§
Source§impl Debug for AtomicOptTimestamp
impl Debug for AtomicOptTimestamp
Source§impl Default for AtomicOptTimestamp
impl Default for AtomicOptTimestamp
Source§fn default() -> AtomicOptTimestamp
fn default() -> AtomicOptTimestamp
Auto Trait Implementations§
impl !Freeze for AtomicOptTimestamp
impl RefUnwindSafe for AtomicOptTimestamp
impl Send for AtomicOptTimestamp
impl Sync for AtomicOptTimestamp
impl Unpin for AtomicOptTimestamp
impl UnwindSafe for AtomicOptTimestamp
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