Tokio v1.26.0

[carllerche]

Fixed

• macros: fix empty join! and try_join! (fix empty join! and try_join! #5504)
• sync: don't leak tracing spans in mutex guards (sync: don't leak tracing spans in mutex guards #5469)
• sync: drop wakers after unlocking the mutex in Notify (Drop wakers after unlocking the mutex in Notify #5471)
• sync: drop wakers outside lock in semaphore (Solve deadlock in Semaphore #5475)

Added

• fs: add fs::try_exists (Add fs::try_exists #4299)
• net: add types for named unix pipes (net: add types for named Unix pipes #5351)
• sync: add MappedOwnedMutexGuard (Add MappedOwnedMutexGuard #5474)

Changed

• chore: update windows-sys to 0.45 (chore: update windows-sys to 0.45 #5386)
• net: use Message Read Mode for named pipes (Named Pipes: Support Message Read Mode #5350)
• sync: mark lock guards with #[clippy::has_significant_drop] (Mark MutexGuard with #[clippy::has_significant_drop] #5422)
• sync: reduce contention in watch channel (Reduce contention in watch channel #5464)
• time: remove cache padding in timer entries (time: remove cache padding in timer entries #5468)
• time: Improve Instant::now() perf with test-util (time: Improve Instant::now() perf with test-util #5513)

Internal Changes

• io: use poll_fn in copy_bidirectional (Use poll_fn in copy_bidirectional #5486)
• net: refactor named pipe builders to not use bitfields (net: refactor named pipe builders to not use bitfields #5477)
• rt: remove Arc from Clock (rt: remove Arc from Clock #5434)
• sync: make notify_waiters calls atomic (sync: make notify_waiters calls atomic #5458)
• time: don't store deadline twice in sleep entries (remove double store of deadline, saving 128 bytes #5410)

Unstable

• metrics: add a new metric for budget exhaustion yields (metrics: add a new metric for budget exhaustion yields #5517)

Documented

• io: improve AsyncFd example (io: improve AsyncFd example #5481)
• runtime: document the nature of the main future (Document the nature of the main future #5494)
• runtime: remove extra period in docs (chore: remove unnecessary dot in comment #5511)
• signal: updated Documentation for Signals (Updated Documentation for Signals #5459)
• sync: add doc aliases for blocking_* methods (sync: add doc aliases for blocking_* methods #5448)
• sync: fix docs for Send/Sync bounds in broadcast (sync: fix docs for Send/Sync bounds in broadcast #5480)
• sync: document drop behavior for channels (sync: document drop behavior for channels #5497)
• task: clarify what happens to spawned work during runtime shutdown (clarify what happens to spawned work during runtime shutdown #5394)
• task: clarify process::Command docs (Clarify process::Command docs (fixing #5406) #5413)
• task: fix wording with 'unsend' (fix: fix wording with 'unsend' #5452)
• time: document immediate completion guarantee for timeouts (time: document immediate completion guarantee for timeouts #5509)
• tokio: document supported platforms (Document supported platforms #5483)

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This discussion was created from the release Tokio v1.26.0.