Struct clocksource::precise::Instant

pub struct Instant { /* private fields */ }

A measurement of a monotonically nodecreasing clock in nanoseconds.

It is opaque and useful only with the duration types.

Unlike std::time::Instant the internal representation use only nanoseconds in a u64 field to hold the clock reading. This means that they will wrap after ~584 years.

As with std::time::Instant, instants are not guaranteed to be steady. They are taken from a clock which is subject to phase and frequency adjustments. This means that they may jump forward or speed up or slow down. Barring any platform bugs, it is expected that they are always monotonically nondecreasing.

The size of a precise::Instant is always the same as a u64.

Implementations

impl Instant

pub fn now() -> Self

Return an Instant that represents the current moment.

pub fn elapsed(&self) -> Duration

Return the elapsed time, in nanoseconds, since the original timestamp.

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

Return the elapsed duration, in nanoseconds, from some earlier timestamp until this timestamp.

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

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

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 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 AddAssign<Duration> for Instant

fn add_assign(&mut self, rhs: Duration)

Performs the += operation.

impl Clone for Instant

fn clone(&self) -> Instant

Returns a copy 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 Default for Instant

fn default() -> Instant

Returns the “default value” for a type.

impl From<Instant> for AtomicInstant

fn from(other: Instant) -> Self

Converts to this type from the input type.

impl From<Instant> for Instant

fn from(other: Instant) -> Self

Converts to this type from the input type.

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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for Instant

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

This method tests for self and other values to be equal, and is used by ==.

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.

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method 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<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 SubAssign<Duration> for Instant

fn sub_assign(&mut self, rhs: Duration)

Performs the -= operation.

impl TryFrom<Instant> for AtomicInstant

type Error = TryFromError

The type returned in the event of a conversion error.

fn try_from(other: Instant) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Instant> for Instant

type Error = TryFromError

The type returned in the event of a conversion error.

fn try_from(other: Instant) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for Instant

impl Eq for Instant

impl StructuralEq for Instant

impl StructuralPartialEq for Instant