Struct TimerWheel 

pub struct TimerWheel { /* private fields */ }

Timer wheel for efficient timer management.

Implementations

impl TimerWheel

pub fn new() -> Self

Create a new timer wheel.

pub fn schedule(&mut self, deadline: Instant, waker: Waker) -> u64

Schedule a new timer.

pub fn cancel(&mut self, timer_id: u64) -> bool

Cancel a timer by ID. Returns true if a live timer was cancelled.

Cancelling an id that was never scheduled or has already fired/drained is a no-op: such an id has no entry left in the heap, so recording a tombstone for it would never be reclaimed and would leak unboundedly.

pub fn poll_expired(&mut self) -> usize

Poll for expired timers and wake them.

pub fn next_expiration(&mut self) -> Option<Instant>

Get the next expiration time.

pub fn timer_count(&self) -> usize

Get the number of live (scheduled, not cancelled) timers.

Trait Implementations

impl Default for TimerWheel

fn default() -> Self

Returns the “default value” for a type.