Struct HlcTimestamp 

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

Hybrid Logical Clock timestamp (64-bit packed).

Layout: [physical_ms: 44 bits][logical: 20 bits]

• 44 bits physical = ~557 years from epoch (sufficient until 2527)
• 20 bits logical = 1M events per millisecond per node

Implementations

impl HlcTimestamp

pub const MAX_LOGICAL: u32

Maximum value for the logical counter.

pub const fn new(physical_ms: u64, logical: u32) -> Self

Create a new HLC timestamp from physical time (ms) and logical counter.

Panics

Debug builds will panic if logical >= 2^20.

pub const fn from_raw(raw: u64) -> Self

Create an HLC timestamp from a raw u64 value.

pub const fn zero() -> Self

Create a zero (minimum) HLC timestamp.

pub const fn max() -> Self

Create a maximum HLC timestamp.

pub const fn physical_ms(&self) -> u64

Extract the physical time component in milliseconds.

pub const fn logical(&self) -> u32

Extract the logical counter component.

pub const fn as_u64(&self) -> u64

Get the raw u64 representation.

pub const fn to_nanos_approx(&self) -> u64

Convert to nanoseconds (approximate, for display/logging only).

Note: This loses precision since HLC uses milliseconds internally.

Trait Implementations

impl Clone for HlcTimestamp

fn clone(&self) -> HlcTimestamp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HlcTimestamp

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

Formats the value using the given formatter.

impl Default for HlcTimestamp

fn default() -> HlcTimestamp

Returns the “default value” for a type.

impl Display for HlcTimestamp

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

Formats the value using the given formatter.

impl FromBytes for HlcTimestamp

where u64: FromBytes,

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 FromZeros for HlcTimestamp

where u64: FromZeros,

fn zero(&mut self)

Overwrites self with zeros.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

impl Hash for HlcTimestamp

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 IntoBytes for HlcTimestamp

where u64: IntoBytes,

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

where Self: FromBytes,

Gets the bytes of this value mutably.

impl Ord for HlcTimestamp

fn cmp(&self, other: &HlcTimestamp) -> 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 HlcTimestamp

fn eq(&self, other: &HlcTimestamp) -> 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 HlcTimestamp

fn partial_cmp(&self, other: &HlcTimestamp) -> 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 TryFromBytes for HlcTimestamp

where u64: TryFromBytes,

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 Copy for HlcTimestamp

impl Eq for HlcTimestamp

impl StructuralPartialEq for HlcTimestamp