mirror of
https://github.com/tokio-rs/tokio.git
synced 2026-08-21 00:00:10 +02:00
Jon Gjengset
003b4d8074
We want executors to enforce that there are never multiple active at the same time. This is ensured through `Enter`, which will panic if you attempt to create more than one. However, by requiring you to pass an `&mut Enter` to `executor::with_default`, we were *also* disallowing temporarily overriding the current executor. This patch removes that requirement.
28 lines
515 B
Rust
28 lines
515 B
Rust
use crate::worker::Worker;
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use std::fmt;
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use std::sync::Arc;
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#[derive(Clone)]
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pub(crate) struct Callback {
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f: Arc<dyn Fn(&Worker) + Send + Sync>,
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}
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impl Callback {
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pub fn new<F>(f: F) -> Self
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where
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F: Fn(&Worker) + Send + Sync + 'static,
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{
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Callback { f: Arc::new(f) }
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}
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pub fn call(&self, worker: &Worker) {
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(self.f)(worker)
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}
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}
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impl fmt::Debug for Callback {
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fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(fmt, "Fn")
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}
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}
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