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Remove unnecessary std::thread_local! #96

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Remove unnecessary std::thread_local! #96

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Remove unnecessary std::thread_local
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@tidely
tidely committed Oct 29, 2025
commit aadaf23a45860fc91402896db644724f4e460c2d
15 changes: 3 additions & 12 deletions src/runnable.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -437,15 +437,6 @@ impl<M> Builder<M> {
use std::task::{Context, Poll};
use std::thread::{self, ThreadId};

#[inline]
fn thread_id() -> ThreadId {
std::thread_local! {
static ID: ThreadId = thread::current().id();
}
ID.try_with(|id| *id)
.unwrap_or_else(|_| thread::current().id())
}

struct Checked<F> {
id: ThreadId,
inner: ManuallyDrop<F>,
Expand All @@ -454,7 +445,7 @@ impl<M> Builder<M> {
impl<F> Drop for Checked<F> {
fn drop(&mut self) {
assert!(
self.id == thread_id(),
self.id == thread::current().id(),
"local task dropped by a thread that didn't spawn it"
);
unsafe {
Expand All @@ -468,7 +459,7 @@ impl<M> Builder<M> {

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
assert!(
self.id == thread_id(),
self.id == thread::current().id(),
"local task polled by a thread that didn't spawn it"
);
unsafe { self.map_unchecked_mut(|c| &mut *c.inner).poll(cx) }
Expand All @@ -480,7 +471,7 @@ impl<M> Builder<M> {
let future = future(meta);

Checked {
id: thread_id(),
id: thread::current().id(),
inner: ManuallyDrop::new(future),
}
};
Expand Down