Module time 

Portable async time: tokio::time on native, [wasmtimer] in the browser.

Code that sleeps, ticks on an interval, or reads an Instant needs to work on both targets. Native tokio’s clock is std::time::Instant::now(), which panics on wasm32-unknown-unknown (no clock), and its timers need a runtime time driver that wasm_bindgen_futures::spawn_local doesn’t provide. So in the browser we route through wasmtimer, which implements the same API on performance.now() + setTimeout. Use web_async::time in place of tokio::time and the same code runs on both.

The surface mirrors tokio::time 1:1. The mockable test clock (tokio::time::pause/advance) is intentionally not re-exported: it lives behind tokio’s test-util feature, which must not leak into normal builds, and it only ever runs in native tests anyway.

Structs

Duration

A Duration type to represent a span of time, typically used for system timeouts.

Instant

A measurement of a monotonically nondecreasing clock. Opaque and useful only with Duration.

Interval

Interval returned by interval and interval_at.

Sleep

Future returned by sleep and sleep_until.

Timeout

Future returned by timeout and timeout_at.

Enums

MissedTickBehavior

Defines the behavior of an Interval when it misses a tick.

Functions

interval

Creates new Interval that yields with interval of period. The first tick completes immediately. The default MissedTickBehavior is Burst, but this can be configured by calling set_missed_tick_behavior.

interval_at

Creates new Interval that yields with interval of period with the first tick completing at start. The default MissedTickBehavior is Burst, but this can be configured by calling set_missed_tick_behavior.

sleep

Waits until duration has elapsed.

sleep_until

Waits until deadline is reached.

timeout

Requires a Future to complete before the specified duration has elapsed.

timeout_at

Requires a Future to complete before the specified instant in time.