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tokio-1.12.0

tokio-rs/tokiotokio-1.12.0Sep 21, 2021by Darksonn

AI Summary

This release introduces POSIX AIO support on FreeBSD and adds various convenience methods for channels and runtime tracing.

Key Highlights

  • Adds POSIX AIO support on FreeBSD
  • Adds try_recv for mpsc channels
  • Adds tracing span for block_on

New Features

  • POSIX AIO on FreeBSD
  • AsyncSeekExt::rewind convenience method
  • Tracing span for block_on futures
  • Callback for worker park and unpark
  • try_recv for mpsc channels

Full Release Notes

# 1.12.0 (September 21, 2021)

### Fixed

- mpsc: ensure `try_reserve` error is consistent with `try_send` ([#4119])
- mpsc: use `spin_loop_hint` instead of `yield_now` ([#4115])
- sync: make `SendError` field public ([#4097])

### Added

- io: add POSIX AIO on FreeBSD ([#4054])
- io: add convenience method `AsyncSeekExt::rewind` ([#4107])
- runtime: add tracing span for `block_on` futures ([#4094])
- runtime: callback when a worker parks and unparks ([#4070])
- sync: implement `try_recv` for mpsc channels ([#4113])

### Changed

- macros: run runtime inside `LocalSet` when using macro ([#4027])

### Documented

- docs: clarify CPU-bound tasks on Tokio ([#4105])
- mpsc: document spurious failures on `poll_recv` ([#4117])
- mpsc: document that `PollSender` impls `Sink` ([#4110])
- task: document non-guarantees of `yield_now` ([#4091])
- time: document paused time details better ([#4061], [#4103])

[#4027]: https://github.com/tokio-rs/tokio/pull/4027
[#4054]: https://github.com/tokio-rs/tokio/pull/4054
[#4061]: https://github.com/tokio-rs/tokio/pull/4061
[#4070]: https://github.com/tokio-rs/tokio/pull/4070
[#4091]: https://github.com/tokio-rs/tokio/pull/4091
[#4094]: https://github.com/tokio-rs/tokio/pull/4094
[#4097]: https://github.com/tokio-rs/tokio/pull/4097
[#4103]: https://github.com/tokio-rs/tokio/pull/4103
[#4105]: https://github.com/tokio-rs/tokio/pull/4105
[#4107]: https://github.com/tokio-rs/tokio/pull/4107
[#4110]: https://github.com/tokio-rs/tokio/pull/4110
[#4113]: https://github.com/tokio-rs/tokio/pull/4113
[#4115]: https://github.com/tokio-rs/tokio/pull/4115
[#4117]: https://github.com/tokio-rs/tokio/pull/4117
[#4119]: https://github.com/tokio-rs/tokio/pull/4119