Update Rust crate tokio to v1.38.0

This MR contains the following updates:

Package	Type	Update	Change
tokio (source)	dependencies	minor	1.36.0 -> 1.38.0

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Release Notes

tokio-rs/tokio (tokio)

v1.38.0: Tokio v1.38.0

Compare Source

This release marks the beginning of stabilization for runtime metrics. It stabilizes RuntimeMetrics::worker_count. Future releases will continue to stabilize more metrics.

Added

• fs: add File::create_new (#​6573)
• io: add copy_bidirectional_with_sizes (#​6500)
• io: implement AsyncBufRead for Join (#​6449)
• net: add Apple visionOS support (#​6465)
• net: implement Clone for NamedPipeInfo (#​6586)
• net: support QNX OS (#​6421)
• sync: add Notify::notify_last (#​6520)
• sync: add mpsc::Receiver::{capacity,max_capacity} (#​6511)
• sync: add split method to the semaphore permit (#​6472, #​6478)
• task: add tokio::task::join_set::Builder::spawn_blocking (#​6578)
• wasm: support rt-multi-thread with wasm32-wasi-preview1-threads (#​6510)

Changed

• macros: make #[tokio::test] append #[test] at the end of the attribute list (#​6497)
• metrics: fix blocking_threads count (#​6551)
• metrics: stabilize RuntimeMetrics::worker_count (#​6556)
• runtime: move task out of the lifo_slot in block_in_place (#​6596)
• runtime: panic if global_queue_interval is zero (#​6445)
• sync: always drop message in destructor for oneshot receiver (#​6558)
• sync: instrument Semaphore for task dumps (#​6499)
• sync: use FIFO ordering when waking batches of wakers (#​6521)
• task: make LocalKey::get work with Clone types (#​6433)
• tests: update nix and mio-aio dev-dependencies (#​6552)
• time: clean up implementation (#​6517)
• time: lazily init timers on first poll (#​6512)
• time: remove the true_when field in TimerShared (#​6563)
• time: use sharding for timer implementation (#​6534)

Fixed

• taskdump: allow building taskdump docs on non-unix machines (#​6564)
• time: check for overflow in Interval::poll_tick (#​6487)
• sync: fix incorrect is_empty on mpsc block boundaries (#​6603)

Documented

• fs: rewrite file system docs (#​6467)
• io: fix stdin documentation (#​6581)
• io: fix obsolete reference in ReadHalf::unsplit() documentation (#​6498)
• macros: render more comprehensible documentation for select! (#​6468)
• net: add missing types to module docs (#​6482)
• net: fix misleading NamedPipeServer example (#​6590)
• sync: add examples for SemaphorePermit, OwnedSemaphorePermit (#​6477)
• sync: document that Barrier::wait is not cancel safe (#​6494)
• sync: explain relation between watch::Sender::{subscribe,closed} (#​6490)
• task: clarify that you can't abort spawn_blocking tasks (#​6571)
• task: fix a typo in doc of LocalSet::run_until (#​6599)
• time: fix test-util requirement for pause and resume in docs (#​6503)

v1.37.0: Tokio v1.37.0

Compare Source

1.37.0 (March 28th, 2024)

Added

• fs: add set_max_buf_size to tokio::fs::File (#​6411)
• io: add try_new and try_with_interest to AsyncFd (#​6345)
• sync: add forget_permits method to semaphore (#​6331)
• sync: add is_closed, is_empty, and len to mpsc receivers (#​6348)
• sync: add a rwlock() method to owned RwLock guards (#​6418)
• sync: expose strong and weak counts of mpsc sender handles (#​6405)
• sync: implement Clone for watch::Sender (#​6388)
• task: add TaskLocalFuture::take_value (#​6340)
• task: implement FromIterator for JoinSet (#​6300)

Changed

• io: make io::split use a mutex instead of a spinlock (#​6403)

Fixed

• docs: fix docsrs build without net feature (#​6360)
• macros: allow select with only else branch (#​6339)
• runtime: fix leaking registration entries when os registration fails (#​6329)

Documented

• io: document cancel safety of AsyncBufReadExt::fill_buf (#​6431)
• io: document cancel safety of AsyncReadExt's primitive read functions (#​6337)
• runtime: add doc link from Runtime to #[tokio::main] (#​6366)
• runtime: make the enter example deterministic (#​6351)
• sync: add Semaphore example for limiting the number of outgoing requests (#​6419)
• sync: fix missing period in broadcast docs (#​6377)
• sync: mark mpsc::Sender::downgrade with #[must_use] (#​6326)
• sync: reorder const_new before new_with (#​6392)
• sync: update watch channel docs (#​6395)
• task: fix documentation links (#​6336)

Changed (unstable)

• runtime: include task Id in taskdumps (#​6328)
• runtime: panic if unhandled_panic is enabled when not supported (#​6410)

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