Struct Instant 

pub struct Instant {
    arch_val: u128,
}

Available on crate feature full only.

An opaque measure of the current system time

Fields

arch_val: u128

Implementations

impl Instant

fn nanos(&self) -> u128

fn arch_to_nanos(arch_val: u128) -> u128

fn nanos_to_arch(nanos: u128) -> u128

pub fn now() -> Self

The current system time

pub fn duration_since(&self, earlier: Instant) -> Duration

pub fn checked_duration_since(&self, earlier: Instant) -> Option<Duration>

pub fn saturating_duration_since(&self, earlier: Instant) -> Duration

pub fn elapsed(&self) -> Duration

The elapsed [Duration] between self and the current time as returned by Instant::now()

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

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

pub fn nanos_since_boot(&self) -> u128

The number of nanoseconds since the system booted

No guarantees are (yet) provided on time before overflow

pub fn get(&self) -> u128

Returns the opaque numeric value of the Instant

The meaning of the returned value is architecture dependant. Behaviour is as follows:

• x86/x86_64 - value of the timestamp counter as provided by rdtsc

Trait Implementations

impl Add<Duration> for Instant

type Output = Instant

The resulting type after applying the + operator.

fn add(self, rhs: Duration) -> Self::Output

Performs the + operation.

impl AddAssign<Duration> for Instant

fn add_assign(&mut self, rhs: Duration)

Performs the += operation.

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 Sub<Duration> for Instant

type Output = Instant

The resulting type after applying the - operator.

fn sub(self, rhs: Duration) -> Self::Output

Performs the - operation.

impl Sub for Instant

type Output = Duration

The resulting type after applying the - operator.

fn sub(self, rhs: Instant) -> Self::Output

Performs the - operation.

impl SubAssign<Duration> for Instant

fn sub_assign(&mut self, rhs: Duration)

Performs the -= operation.

impl Copy for Instant

impl Eq for Instant

impl StructuralPartialEq for Instant