Struct embassy_executor::SpawnToken

pub struct SpawnToken<S> { /* private fields */ }

在执行器中创建新任务的令牌

当调用任务方法时（比如 #[embassy_executor::task] async fn my_task() { ... }）， 返回值是一个的 SpawnToken，它代表这个任务的实例。你必须将它放到一个执行器中去创建任务，如 Spawner::spawn()

范型参数 S 决定执行器在其他线程中是否可以创建任务。如果 S: Send，则可以，这允许将其放到 SendSpawner来生成任务。 否则，就不可以，只能在当前线程中使用 Spawner 来生成任务。

异常

销毁一个 SpawnToken 实例会导致异常。你不该以这种方式“中止”任务的创建。 一旦你调用一个任务函数，并得到一个 SpawnToken，就 必须 创建它。

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Token to spawn a newly-created task in an executor.

When calling a task function (like #[embassy_executor::task] async fn my_task() { ... }), the returned value is a SpawnToken that represents an instance of the task, ready to spawn. You must then spawn it into an executor, typically with Spawner::spawn().

The generic parameter S determines whether the task can be spawned in executors in other threads or not. If S: Send, it can, which allows spawning it into a SendSpawner. If not, it can’t, so it can only be spawned into the current thread’s executor, with Spawner.

Panics

Dropping a SpawnToken instance panics. You may not “abort” spawning a task in this way. Once you’ve invoked a task function and obtained a SpawnToken, you must spawn it.

Implementations

impl<S> SpawnToken<S>

pub fn new_failed() -> Self

返回一个 SpawnToken， 代表创建任务失败

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Return a SpawnToken that represents a failed spawn.

Trait Implementations

impl<S> Drop for SpawnToken<S>

fn drop(&mut self)

Executes the destructor for this type.