Struct Instant 

pub struct Instant<T, U = NsUnit>(/* private fields */);

A timestamp from the kernel. Generic over both the timeline and the units it is measured in.

Implementations

impl Instant<MonotonicTimeline>

pub fn get() -> Instant<MonotonicTimeline>

Get the current monotonic time which does not advance during system suspend.

Wraps the zx_clock_get_monotonic syscall.

pub fn after( duration: Duration<MonotonicTimeline>, ) -> Instant<MonotonicTimeline>

Compute a deadline for the time in the future that is the given Duration away.

Wraps the zx_deadline_after syscall.

pub fn sleep(self)

Sleep until the given time.

Wraps the zx_nanosleep syscall.

impl Instant<BootTimeline>

pub fn get() -> Instant<BootTimeline>

Get the current boot time which advances during system suspend.

pub fn after(duration: Duration<BootTimeline>) -> Instant<BootTimeline>

Compute a deadline for the time in the future that is the given Duration away.

impl<T, U> Instant<T, U>

where T: Timeline, U: TimeUnit,

pub const ZERO: Instant<T, U>

impl<T> Instant<T>

where T: Timeline,

pub const INFINITE: Instant<T>

pub const INFINITE_PAST: Instant<T>

pub const fn into_nanos(self) -> i64

Returns the number of nanoseconds since the epoch contained by this Time.

pub const fn from_nanos(nanos: i64) -> Instant<T>

Return a strongly-typed Time from a raw number of nanoseconds.

impl Instant<MonotonicTimeline, TicksUnit>

pub fn get() -> Instant<MonotonicTimeline, TicksUnit>

Read the number of high-precision timer ticks on the monotonic timeline. These ticks may be processor cycles, high speed timer, profiling timer, etc. They do not advance while the system is suspended.

Wraps the zx_ticks_get syscall.

impl Instant<BootTimeline, TicksUnit>

pub fn get() -> Instant<BootTimeline, TicksUnit>

Read the number of high-precision timer ticks on the boot timeline. These ticks may be processor cycles, high speed timer, profiling timer, etc. They advance while the system is suspended.

impl<T> Instant<T, TicksUnit>

where T: Timeline,

pub const fn into_raw(self) -> i64

Return the number of ticks contained by this Ticks.

pub const fn from_raw(raw: i64) -> Instant<T, TicksUnit>

Return a strongly-typed Ticks from a raw number of system ticks.

pub fn per_second() -> i64

Return the number of high-precision timer ticks in a second.

Wraps the zx_ticks_per_second syscall.

Trait Implementations

impl<T, U> Add<Duration<T, U>> for Instant<T, U>

where T: Timeline, U: TimeUnit,

type Output = Instant<T, U>

The resulting type after applying the + operator.

fn add( self, dur: Duration<T, U>, ) -> <Instant<T, U> as Add<Duration<T, U>>>::Output

Performs the + operation.

impl<T, U> Add<Instant<T, U>> for Duration<T, U>

where T: Timeline, U: TimeUnit,

type Output = Instant<T, U>

The resulting type after applying the + operator.

fn add( self, time: Instant<T, U>, ) -> <Duration<T, U> as Add<Instant<T, U>>>::Output

Performs the + operation.

impl<T, U> AddAssign<Duration<T, U>> for Instant<T, U>

where T: Timeline, U: TimeUnit,

fn add_assign(&mut self, dur: Duration<T, U>)

Performs the += operation.

impl<T, U> Clone for Instant<T, U>

where T: Clone, U: Clone,

fn clone(&self) -> Instant<T, U>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T, U> Debug for Instant<T, U>

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

Formats the value using the given formatter.

impl<T, U> Default for Instant<T, U>

where T: Default, U: Default,

fn default() -> Instant<T, U>

Returns the “default value” for a type.

impl From<BootInstant> for Instant<BootTimeline>

fn from(t: BootInstant) -> Instant<BootTimeline>

Converts to this type from the input type.

impl From<Instant<BootTimeline>> for BootInstant

fn from(t: Instant<BootTimeline>) -> BootInstant

Converts to this type from the input type.

impl From<Instant<MonotonicTimeline>> for MonotonicInstant

fn from(t: Instant<MonotonicTimeline>) -> MonotonicInstant

Converts to this type from the input type.

impl From<MonotonicInstant> for Instant<MonotonicTimeline>

fn from(t: MonotonicInstant) -> Instant<MonotonicTimeline>

Converts to this type from the input type.

impl<T, U> FromBytes for Instant<T, U>

where i64: FromBytes, PhantomData<(T, U)>: FromBytes,

fn ref_from_bytes( source: &[u8], ) -> Result<&Self, ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: KnownLayout + Immutable,

Interprets the given source as a &Self.

fn ref_from_prefix( source: &[u8], ) -> Result<(&Self, &[u8]), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: KnownLayout + Immutable,

Interprets the prefix of the given source as a &Self without copying.

fn ref_from_suffix( source: &[u8], ) -> Result<(&[u8], &Self), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: Immutable + KnownLayout,

Interprets the suffix of the given bytes as a &Self.

fn mut_from_bytes( source: &mut [u8], ) -> Result<&mut Self, ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout,

Interprets the given source as a &mut Self.

fn mut_from_prefix( source: &mut [u8], ) -> Result<(&mut Self, &mut [u8]), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout,

Interprets the prefix of the given source as a &mut Self without copying.

fn mut_from_suffix( source: &mut [u8], ) -> Result<(&mut [u8], &mut Self), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout,

Interprets the suffix of the given source as a &mut Self without copying.

fn ref_from_bytes_with_elems( source: &[u8], count: usize, ) -> Result<&Self, ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: KnownLayout<PointerMetadata = usize> + Immutable,

Interprets the given source as a &Self with a DST length equal to count.

fn ref_from_prefix_with_elems( source: &[u8], count: usize, ) -> Result<(&Self, &[u8]), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: KnownLayout<PointerMetadata = usize> + Immutable,

Interprets the prefix of the given source as a DST &Self with length equal to count.

fn ref_from_suffix_with_elems( source: &[u8], count: usize, ) -> Result<(&[u8], &Self), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: KnownLayout<PointerMetadata = usize> + Immutable,

Interprets the suffix of the given source as a DST &Self with length equal to count.

fn mut_from_bytes_with_elems( source: &mut [u8], count: usize, ) -> Result<&mut Self, ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout<PointerMetadata = usize> + Immutable,

Interprets the given source as a &mut Self with a DST length equal to count.

fn mut_from_prefix_with_elems( source: &mut [u8], count: usize, ) -> Result<(&mut Self, &mut [u8]), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout<PointerMetadata = usize>,

Interprets the prefix of the given source as a &mut Self with DST length equal to count.

fn mut_from_suffix_with_elems( source: &mut [u8], count: usize, ) -> Result<(&mut [u8], &mut Self), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout<PointerMetadata = usize>,

Interprets the suffix of the given source as a &mut Self with DST length equal to count.

fn read_from_bytes(source: &[u8]) -> Result<Self, SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the given source.

fn read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the prefix of the given source.

fn read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the suffix of the given source.

impl<T, U> FromZeros for Instant<T, U>

where i64: FromZeros, PhantomData<(T, U)>: FromZeros,

fn zero(&mut self)

Overwrites self with zeros.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

fn new_box_zeroed() -> Result<Box<Self>, AllocError>

where Self: Sized,

Creates a Box<Self> from zeroed bytes.

fn new_box_zeroed_with_elems(count: usize) -> Result<Box<Self>, AllocError>

where Self: KnownLayout<PointerMetadata = usize>,

Creates a Box<[Self]> (a boxed slice) from zeroed bytes.

fn new_vec_zeroed(len: usize) -> Result<Vec<Self>, AllocError>

where Self: Sized,

Creates a Vec<Self> from zeroed bytes.

fn extend_vec_zeroed( v: &mut Vec<Self>, additional: usize, ) -> Result<(), AllocError>

where Self: Sized,

Extends a Vec<Self> by pushing additional new items onto the end of the vector. The new items are initialized with zeros.

fn insert_vec_zeroed( v: &mut Vec<Self>, position: usize, additional: usize, ) -> Result<(), AllocError>

where Self: Sized,

Inserts additional new items into Vec<Self> at position. The new items are initialized with zeros.

impl<T, U> Hash for Instant<T, U>

where T: Hash, U: Hash,

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

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<T, U> IntoBytes for Instant<T, U>

where i64: IntoBytes, PhantomData<(T, U)>: IntoBytes,

fn as_bytes(&self) -> &[u8]

where Self: Immutable,

Gets the bytes of this value.

fn as_mut_bytes(&mut self) -> &mut [u8]

where Self: FromBytes,

Gets the bytes of this value mutably.

fn write_to(&self, dst: &mut [u8]) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to dst.

fn write_to_prefix( &self, dst: &mut [u8], ) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to the prefix of dst.

fn write_to_suffix( &self, dst: &mut [u8], ) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to the suffix of dst.

impl<T, U> Ord for Instant<T, U>

where T: Ord, U: Ord,

fn cmp(&self, other: &Instant<T, U>) -> 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<T, U> PartialEq for Instant<T, U>

where T: PartialEq, U: PartialEq,

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

where T: PartialOrd, U: PartialOrd,

fn partial_cmp(&self, other: &Instant<T, U>) -> 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<T, U> Sub<Duration<T, U>> for Instant<T, U>

where T: Timeline, U: TimeUnit,

type Output = Instant<T, U>

The resulting type after applying the - operator.

fn sub( self, dur: Duration<T, U>, ) -> <Instant<T, U> as Sub<Duration<T, U>>>::Output

Performs the - operation.

impl<T, U> Sub for Instant<T, U>

where T: Timeline, U: TimeUnit,

type Output = Duration<T, U>

The resulting type after applying the - operator.

fn sub(self, rhs: Instant<T, U>) -> <Instant<T, U> as Sub>::Output

Performs the - operation.

impl<T, U> SubAssign<Duration<T, U>> for Instant<T, U>

where T: Timeline, U: TimeUnit,

fn sub_assign(&mut self, dur: Duration<T, U>)

Performs the -= operation.

impl<T, U> TryFromBytes for Instant<T, U>

where i64: TryFromBytes, PhantomData<(T, U)>: TryFromBytes,

fn try_ref_from_bytes( source: &[u8], ) -> Result<&Self, ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the given source as a &Self.

fn try_ref_from_prefix( source: &[u8], ) -> Result<(&Self, &[u8]), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the prefix of the given source as a &Self.

fn try_ref_from_suffix( source: &[u8], ) -> Result<(&[u8], &Self), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the suffix of the given source as a &Self.

fn try_mut_from_bytes( bytes: &mut [u8], ) -> Result<&mut Self, ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout + IntoBytes,

Attempts to interpret the given source as a &mut Self without copying.

fn try_mut_from_prefix( source: &mut [u8], ) -> Result<(&mut Self, &mut [u8]), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout + IntoBytes,

Attempts to interpret the prefix of the given source as a &mut Self.

fn try_mut_from_suffix( source: &mut [u8], ) -> Result<(&mut [u8], &mut Self), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout + IntoBytes,

Attempts to interpret the suffix of the given source as a &mut Self.

fn try_ref_from_bytes_with_elems( source: &[u8], count: usize, ) -> Result<&Self, ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout<PointerMetadata = usize> + Immutable,

Attempts to interpret the given source as a &Self with a DST length equal to count.

fn try_ref_from_prefix_with_elems( source: &[u8], count: usize, ) -> Result<(&Self, &[u8]), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout<PointerMetadata = usize> + Immutable,

Attempts to interpret the prefix of the given source as a &Self with a DST length equal to count.

fn try_ref_from_suffix_with_elems( source: &[u8], count: usize, ) -> Result<(&[u8], &Self), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout<PointerMetadata = usize> + Immutable,

Attempts to interpret the suffix of the given source as a &Self with a DST length equal to count.

fn try_mut_from_bytes_with_elems( source: &mut [u8], count: usize, ) -> Result<&mut Self, ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout<PointerMetadata = usize> + IntoBytes,

Attempts to interpret the given source as a &mut Self with a DST length equal to count.

fn try_mut_from_prefix_with_elems( source: &mut [u8], count: usize, ) -> Result<(&mut Self, &mut [u8]), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout<PointerMetadata = usize> + IntoBytes,

Attempts to interpret the prefix of the given source as a &mut Self with a DST length equal to count.

fn try_mut_from_suffix_with_elems( source: &mut [u8], count: usize, ) -> Result<(&mut [u8], &mut Self), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout<PointerMetadata = usize> + IntoBytes,

Attempts to interpret the suffix of the given source as a &mut Self with a DST length equal to count.

fn try_read_from_bytes( source: &[u8], ) -> Result<Self, ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read the given source as a Self.

fn try_read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the prefix of the given source.

fn try_read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the suffix of the given source.

impl WakeupTime for Instant<BootTimeline>

fn into_timer(self) -> Timer

Create a timer based on this time.

impl WakeupTime for Instant<MonotonicTimeline>

fn into_timer(self) -> Timer

Create a timer based on this time.

impl<T, U> Copy for Instant<T, U>

where T: Copy, U: Copy,

impl<T, U> Eq for Instant<T, U>

where T: Eq, U: Eq,

impl<T, U> Immutable for Instant<T, U>

where i64: Immutable, PhantomData<(T, U)>: Immutable,

impl<T, U> StructuralPartialEq for Instant<T, U>