Struct TimerHandle 

pub struct TimerHandle { /* private fields */ }

Timer handle for managing timer lifecycle (without completion receiver)

Note: This type does not implement Clone to prevent duplicate cancellation of the same timer. Each timer should have only one owner.

定时器句柄，用于管理定时器生命周期（不含完成通知接收器）

注意：此类型未实现 Clone 以防止重复取消同一定时器。每个定时器应该只有一个所有者。

Implementations

impl TimerHandle

pub fn cancel(&self) -> bool

Cancel the timer

Returns

Returns true if task exists and is successfully cancelled, otherwise false

取消定时器

返回值

如果任务存在且成功取消则返回 true，否则返回 false

Examples (示例)

let timer = TimerWheel::with_defaults();
let callback = Some(CallbackWrapper::new(|| async {}));
let task = TimerTask::new_oneshot(Duration::from_secs(1), callback);
let allocated_handle = timer.allocate_handle();
let handle = timer.register(allocated_handle, task);

// Cancel the timer
let success = handle.cancel();
println!("Canceled successfully: {}", success);

pub fn postpone( &self, new_delay: Duration, callback: Option<CallbackWrapper>, ) -> bool

Postpone the timer

Parameters

• new_delay: New delay duration, recalculated from current time
• callback: New callback function, pass None to keep original callback, pass Some to replace with new callback

Returns

Returns true if task exists and is successfully postponed, otherwise false

推迟定时器

参数

• new_delay: 新的延迟时间，从当前时间重新计算
• callback: 新的回调函数，传递 None 保持原始回调，传递 Some 替换为新的回调

返回值

如果任务存在且成功推迟则返回 true，否则返回 false

Examples (示例)

let timer = TimerWheel::with_defaults();
let callback = Some(CallbackWrapper::new(|| async {}));
let task = TimerTask::new_oneshot(Duration::from_secs(1), callback);
let allocated_handle = timer.allocate_handle();
let handle = timer.register(allocated_handle, task);

// Postpone to 5 seconds
let success = handle.postpone(Duration::from_secs(5), None);
println!("Postponed successfully: {}", success);