Struct Sender 

pub struct Sender<T: State = TaskCompletion> { /* private fields */ }

Completion notifier for one-shot tasks

Optimized implementation using AtomicPtr + AtomicU8:

• Faster creation than Notify (no waitlist allocation) or AtomicWaker (no state machine)
• Lower memory footprint (just two atomic fields)
• Direct waker management without intermediate futures
• Single Arc allocation for both sender and receiver

一次性任务完成通知器

使用 AtomicPtr + AtomicU8 的优化实现：

• 比 Notify（无等待列表分配）或 AtomicWaker（无状态机）创建更快
• 更小的内存占用（仅两个原子字段）
• 直接管理 waker，无中间 future
• 发送器和接收器共享单个 Arc 分配

Implementations

impl<T: State> Sender<T>

pub fn new() -> (Self, Receiver<T>)

Create a new oneshot completion notifier with receiver

创建一个新的 oneshot 完成通知器和接收器

Returns

Returns a tuple of (notifier, receiver)

返回 (通知器, 接收器) 元组

pub fn notify(&self, state: T)

Notify completion with the given state

使用给定状态通知完成