Struct SystemClock 

pub struct SystemClock { /* private fields */ }

The default clock: system wall time and a monotonic origin aligned to the process-wide millisecond grid, so default instances share one local expiry grid.

Implementations

impl SystemClock

pub fn new() -> Self

System sources: SystemTime for wall time and the Instant elapsed since the first default clock of this process for monotonic time.

pub fn with_sources( monotonic: impl Fn() -> Duration + Send + Sync + 'static, wall: impl Fn() -> i64 + Send + Sync + 'static, ) -> Self

The production alignment over caller-supplied sources.

monotonic reads elapsed time since one fixed instant shared by every clock built over it; this clock’s origin is the nearest whole millisecond of that reading at or before construction, so clocks built at different fractional times share one expiry grid. wall supplies epoch milliseconds. Controlled tests use this to run the default alignment over a virtual clock.

Trait Implementations

impl Clock for SystemClock

fn wall_ms(&self) -> i64

Epoch milliseconds from the application wall clock.

fn elapsed(&self) -> Duration

Monotonic elapsed time since this clock’s origin, with native precision.

fn elapsed_ms(&self) -> i64

Whole-millisecond elapsed reading used by process-local storage.

impl Clone for SystemClock

fn clone(&self) -> SystemClock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SystemClock

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

Formats the value using the given formatter.

impl Default for SystemClock

fn default() -> Self

Returns the “default value” for a type.