Tracking Issue for waker_fn

[tisonkun]

Feature gate: #![feature(waker_fn)]

This is a tracking issue for rust-lang/libs-team#702.

Public API

pub fn waker_fn<F: Fn() + Send + Sync + 'static>(f: F) -> Waker {
  Waker::from(Arc::new(WakeFn(f)))
}

struct WakeFn<F> {
  f: F,
}

impl<F> Wake for WakeFn<F>
  where F: Fn()
{
  fn wake(self: Arc<Self>) { (self.f)() }
  fn wake_by_ref(self: &Arc<Self>) { (self.f)() }
}

Steps / History

(Remember to update the S-tracking-* label when checking boxes.)

• ACP: ACP: Add wake_fn to alloc::task libs-team#702
• Implementation: Add waker_fn and local_waker_fn to std::task #149976
• Final comment period (FCP)¹
• Stabilization PR

Unresolved Questions

• None yet.

Footnotes

1. https://std-dev-guide.rust-lang.org/feature-lifecycle/stabilization.html ↩