Struct Sender 

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

Completion notifier for one-shot tasks

Optimized implementation using direct RawWaker storage + AtomicU8:

• Zero Box allocation: stores waker components directly in atomic fields
• Faster creation than Notify (no waitlist) or AtomicWaker (no state machine)
• Lower memory footprint (three atomic fields: data ptr, vtable ptr, state)
• Direct waker management without intermediate futures or heap allocation
• Single Arc allocation for both sender and receiver

一次性任务完成通知器

使用直接 RawWaker 存储 + AtomicU8 的优化实现：

• 零 Box 分配：直接在原子字段中存储 waker 组件
• 比 Notify（无等待列表）或 AtomicWaker（无状态机）创建更快
• 更小的内存占用（三个原子字段：data 指针、vtable 指针、状态）
• 直接管理 waker，无中间 future 或堆分配
• 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