Struct embassy_executor::Executor

pub struct Executor { /* private fields */ }

std 环境下的单线程执行器

---

Single-threaded std-based executor.

Implementations

impl Executor

pub fn new() -> Self

Create a new Executor.

pub fn run(&'static mut self, init: impl FnOnce(Spawner)) -> !

启动执行器

这里调用 init 闭包，通过 Spawner 在当前执行器上生成任务。使用它来生成初始任务。 init 返回后，执行器开始运行任务。

为了后面生成其他的任务，你可以保存 [Spawner``]的副本(它是 Copy`的)，例如，通过将其 作为参数传递给初始任务。

这个函数需要 &'static mut self。换而言之， Executor 实例需要永久存储，并允许可变访问。 下面这些方法可以实现：

• 使用 StaticCell (safe)
• 使用 static mut (unsafe)
• 保存在局变量中，但需要当前函数是永远不会返回的（比如 fn main() -> !），使用 transmute 来升级他的生命周期（unsafe）。

这个函数永远不会返回

---

Run the executor.

The init closure is called with a Spawner that spawns tasks on this executor. Use it to spawn the initial task(s). After init returns, the executor starts running the tasks.

To spawn more tasks later, you may keep copies of the Spawner (it is Copy), for example by passing it as an argument to the initial tasks.

This function requires &'static mut self. This means you have to store the Executor instance in a place where it’ll live forever and grants you mutable access. There’s a few ways to do this:

• a StaticCell (safe)
• a static mut (unsafe)
• a local variable in a function you know never returns (like fn main() -> !), upgrading its lifetime with transmute. (unsafe)

This function never returns.