tokio-1.52.3
boratanrikulu/gecittokio-1.52.3May 8, 2026by Darksonn
AI Summary
This release focuses on critical synchronization fixes in mpsc channels and RwLock to ensure thread-safe operation under specific conditions.
Key Highlights
- Fixed underflow in mpsc channel `len()` method.
- Fixed receiver notification in mpsc `OwnedPermit::release()`.
- Fixed RwLock to require `max_readers != 0`.
- Fixed `try_recv()` to return `Empty` when mpsc is closed with outstanding permits.
New Features
- MPSC channel synchronization fixes
- RwLock requirement fix
- Closed channel handling improvement
Full Release Notes
# 1.52.3 (May 8th, 2026) ### Fixed * sync: fix underflow in mpsc channel `len()` ([#8062]) * sync: notify receivers in mpsc `OwnedPermit::release()` method ([#8075]) * sync: require that an `RwLock` has `max_readers != 0` ([#8076]) * sync: return `Empty` from `try_recv()` when mpsc is closed with outstanding permits ([#8074]) [#8062]: https://github.com/tokio-rs/tokio/pull/8062 [#8074]: https://github.com/tokio-rs/tokio/pull/8074 [#8075]: https://github.com/tokio-rs/tokio/pull/8075 [#8076]: https://github.com/tokio-rs/tokio/pull/8076