Struct Instant 

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

Available on crate feature time only.

A monotonic instant represented as nanoseconds since an arbitrary origin.

This type is intentionally small and no_std friendly. It is suitable for:

• deadlines (Deadline)
• timeouts and elapsed-time calculations
• deterministic replay (when driven by a virtual clock)

Implementations

impl Instant

pub const fn from_nanos(nanos: u64) -> Self

Creates an Instant from a nanosecond counter.

pub const fn as_nanos(self) -> u64

Returns this instant as nanoseconds since an arbitrary origin.

pub const fn checked_duration_since(self, earlier: Self) -> Option<Duration>

Returns the duration between earlier and self, if self >= earlier.

pub fn checked_add(self, duration: Duration) -> Option<Self>

Returns the result of adding duration to this instant, or None on overflow.

pub fn checked_sub(self, duration: Duration) -> Option<Self>

Returns the result of subtracting duration from this instant, or None on underflow.

Trait Implementations

impl Clone for Instant

fn clone(&self) -> Instant

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Instant

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

Formats the value using the given formatter.

impl Hash for Instant

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 Ord for Instant

fn cmp(&self, other: &Instant) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Instant

fn eq(&self, other: &Instant) -> 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 PartialOrd for Instant

fn partial_cmp(&self, other: &Instant) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Instant

impl Eq for Instant

impl StructuralPartialEq for Instant