pve-lxc-syscalld/vendor/tokio/CHANGELOG.md

1.21.2 (September 27, 2022)

This release removes the dependency on the once_cell crate to restore the MSRV of 1.21.x, which is the latest minor version at the time of release. (#5048)

1.21.1 (September 13, 2022)

Fixed

• net: fix dependency resolution for socket2 (#5000)
• task: ignore failure to set TLS in LocalSet Drop (#4976)

1.21.0 (September 2, 2022)

This release is the first release of Tokio to intentionally support WASM. The sync,macros,io-util,rt,time features are stabilized on WASM. Additionally the wasm32-wasi target is given unstable support for the net feature.

Added

• net: add device and bind_device methods to TCP/UDP sockets (#4882)
• net: add tos and set_tos methods to TCP and UDP sockets (#4877)
• net: add security flags to named pipe ServerOptions (#4845)
• signal: add more windows signal handlers (#4924)
• sync: add mpsc::Sender::max_capacity method (#4904)
• sync: implement Weak version of mpsc::Sender (#4595)
• task: add LocalSet::enter (#4765)
• task: stabilize JoinSet and AbortHandle (#4920)
• tokio: add track_caller to public APIs (#4805, #4848, #4852)
• wasm: initial support for wasm32-wasi target (#4716)

Fixed

• miri: improve miri compatibility by avoiding temporary references in linked_list::Link impls (#4841)
• signal: don't register write interest on signal pipe (#4898)
• sync: add #[must_use] to lock guards (#4886)
• sync: fix hang when calling recv on closed and reopened broadcast channel (#4867)
• task: propagate attributes on task-locals (#4837)

Changed

• fs: change panic to error in File::start_seek (#4897)
• io: reduce syscalls in poll_read (#4840)
• process: use blocking threadpool for child stdio I/O (#4824)
• signal: make SignalKind methods const (#4956)

Internal changes

• rt: extract basic_scheduler::Config (#4935)
• rt: move I/O driver into runtime module (#4942)
• rt: rename internal scheduler types (#4945)

Documented

• chore: fix typos and grammar (#4858, #4894, #4928)
• io: fix typo in AsyncSeekExt::rewind docs (#4893)
• net: add documentation to try_read() for zero-length buffers (#4937)
• runtime: remove incorrect panic section for Builder::worker_threads (#4849)
• sync: doc of watch::Sender::send improved (#4959)
• task: add cancel safety docs to JoinHandle (#4901)
• task: expand on cancellation of spawn_blocking (#4811)
• time: clarify that the first tick of Interval::tick happens immediately (#4951)

Unstable

• rt: add unstable option to disable the LIFO slot (#4936)
• task: fix incorrect signature in Builder::spawn_on (#4953)
• task: make task::Builder::spawn* methods fallible (#4823)

1.20.2 (September 27, 2022)

This release removes the dependency on the once_cell crate to restore the MSRV of the 1.20.x LTS release. (#5048)

1.20.1 (July 25, 2022)

Fixed

• chore: fix version detection in build script (#4860)

1.20.0 (July 12, 2022)

Added

• tokio: add track_caller to public APIs (#4772, #4791, #4793, #4806, #4808)
• sync: Add has_changed method to watch::Ref (#4758)

Changed

• time: remove src/time/driver/wheel/stack.rs (#4766)
• rt: clean up arguments passed to basic scheduler (#4767)
• net: be more specific about winapi features (#4764)
• tokio: use const initialized thread locals where possible (#4677)
• task: various small improvements to LocalKey (#4795)

Documented

• fs: warn about performance pitfall (#4762)
• chore: fix spelling (#4769)
• sync: document spurious failures in oneshot (#4777)
• sync: add warning for watch in non-Send futures (#4741)
• chore: fix typo (#4798)

Unstable

• joinset: rename join_one to join_next (#4755)
• rt: unhandled panic config for current thread rt (#4770)

1.19.2 (June 6, 2022)

This release fixes another bug in Notified::enable. (#4751)

1.19.1 (June 5, 2022)

This release fixes a bug in Notified::enable. (#4747)

1.19.0 (June 3, 2022)

Added

• runtime: add is_finished method for JoinHandle and AbortHandle (#4709)
• runtime: make global queue and event polling intervals configurable (#4671)
• sync: add Notified::enable (#4705)
• sync: add watch::Sender::send_if_modified (#4591)
• sync: add resubscribe method to broadcast::Receiver (#4607)
• net: add take_error to TcpSocket and TcpStream (#4739)

Changed

• io: refactor out usage of Weak in the io handle (#4656)

Fixed

• macros: avoid starvation in join! and try_join! (#4624)

Documented

• runtime: clarify semantics of tasks outliving block_on (#4729)
• time: fix example for MissedTickBehavior::Burst (#4713)

Unstable

• metrics: correctly update atomics in IoDriverMetrics (#4725)
• metrics: fix compilation with unstable, process, and rt, but without net (#4682)
• task: add #[track_caller] to JoinSet/JoinMap (#4697)
• task: add Builder::{spawn_on, spawn_local_on, spawn_blocking_on} (#4683)
• task: add consume_budget for cooperative scheduling (#4498)
• task: add join_set::Builder for configuring JoinSet tasks (#4687)
• task: update return value of JoinSet::join_one (#4726)

1.18.3 (September 27, 2022)

This release removes the dependency on the once_cell crate to restore the MSRV of the 1.18.x LTS release. (#5048)

1.18.2 (May 5, 2022)

Add missing features for the winapi dependency. (#4663)

1.18.1 (May 2, 2022)

The 1.18.0 release broke the build for targets without 64-bit atomics when building with tokio_unstable. This release fixes that. (#4649)

1.18.0 (April 27, 2022)

This release adds a number of new APIs in tokio::net, tokio::signal, and tokio::sync. In addition, it adds new unstable APIs to tokio::task (Ids for uniquely identifying a task, and AbortHandle for remotely cancelling a task), as well as a number of bugfixes.

Fixed

• blocking: add missing #[track_caller] for spawn_blocking (#4616)
• macros: fix select macro to process 64 branches (#4519)
• net: fix try_io methods not calling Mio's try_io internally (#4582)
• runtime: recover when OS fails to spawn a new thread (#4485)

Added

• net: add UdpSocket::peer_addr (#4611)
• net: add try_read_buf method for named pipes (#4626)
• signal: add SignalKind Hash/Eq impls and c_int conversion (#4540)
• signal: add support for signals up to SIGRTMAX (#4555)
• sync: add watch::Sender::send_modify method (#4310)
• sync: add broadcast::Receiver::len method (#4542)
• sync: add watch::Receiver::same_channel method (#4581)
• sync: implement Clone for RecvError types (#4560)

Changed

• update mio to 0.8.1 (#4582)
• macros: rename tokio::select!'s internal util module (#4543)
• runtime: use Vec::with_capacity when building runtime (#4553)

Documented

• improve docs for tokio_unstable (#4524)
• runtime: include more documentation for thread_pool/worker (#4511)
• runtime: update Handle::current's docs to mention EnterGuard (#4567)
• time: clarify platform specific timer resolution (#4474)
• signal: document that Signal::recv is cancel-safe (#4634)
• sync: UnboundedReceiver close docs (#4548)

Unstable

The following changes only apply when building with --cfg tokio_unstable:

• task: add task::Id type (#4630)
• task: add AbortHandle type for cancelling tasks in a JoinSet (#4530, #4640)
• task: fix missing doc(cfg(...)) attributes for JoinSet (#4531)
• task: fix broken link in AbortHandle RustDoc (#4545)
• metrics: add initial IO driver metrics (#4507)

1.17.0 (February 16, 2022)

This release updates the minimum supported Rust version (MSRV) to 1.49, the mio dependency to v0.8, and the (optional) parking_lot dependency to v0.12. Additionally, it contains several bug fixes, as well as internal refactoring and performance improvements.

Fixed

• time: prevent panicking in sleep with large durations (#4495)
• time: eliminate potential panics in Instant arithmetic on platforms where Instant::now is not monotonic (#4461)
• io: fix DuplexStream not participating in cooperative yielding (#4478)
• rt: fix potential double panic when dropping a JoinHandle (#4430)

Changed

• update minimum supported Rust version to 1.49 (#4457)
• update parking_lot dependency to v0.12.0 (#4459)
• update mio dependency to v0.8 (#4449)
• rt: remove an unnecessary lock in the blocking pool (#4436)
• rt: remove an unnecessary enum in the basic scheduler (#4462)
• time: use bit manipulation instead of modulo to improve performance (#4480)
• net: use std::future::Ready instead of our own Ready future (#4271)
• replace deprecated atomic::spin_loop_hint with hint::spin_loop (#4491)
• fix miri failures in intrusive linked lists (#4397)

Documented

• io: add an example for tokio::process::ChildStdin (#4479)

Unstable

The following changes only apply when building with --cfg tokio_unstable:

• task: fix missing location information in tracing spans generated by spawn_local (#4483)
• task: add JoinSet for managing sets of tasks (#4335)
• metrics: fix compilation error on MIPS (#4475)
• metrics: fix compilation error on arm32v7 (#4453)

1.16.1 (January 28, 2022)

This release fixes a bug in #4428 with the change #4437.

1.16.0 (January 27, 2022)

Fixes a soundness bug in io::Take (#4428). The unsoundness is exposed when leaking memory in the given AsyncRead implementation and then overwriting the supplied buffer:

impl AsyncRead for Buggy {
    fn poll_read(
        self: Pin<&mut Self>,
        cx: &mut Context<'_>,
        buf: &mut ReadBuf<'_>
    ) -> Poll<Result<()>> {
      let new_buf = vec![0; 5].leak();
      *buf = ReadBuf::new(new_buf);
      buf.put_slice(b"hello");
      Poll::Ready(Ok(()))
    }
}

Also, this release includes improvements to the multi-threaded scheduler that can increase throughput by up to 20% in some cases (#4383).

Fixed

• io: soundness don't expose uninitialized memory when using io::Take in edge case (#4428)
• fs: ensure File::write results in a write syscall when the runtime shuts down (#4316)
• process: drop pipe after child exits in wait_with_output (#4315)
• rt: improve error message when spawning a thread fails (#4398)
• rt: reduce false-positive thread wakups in the multi-threaded scheduler (#4383)
• sync: don't inherit Send from parking_lot::*Guard (#4359)

Added

• net: TcpSocket::linger() and set_linger() (#4324)
• net: impl UnwindSafe for socket types (#4384)
• rt: impl UnwindSafe for JoinHandle (#4418)
• sync: watch::Receiver::has_changed() (#4342)
• sync: oneshot::Receiver::blocking_recv() (#4334)
• sync: RwLock blocking operations (#4425)

Unstable

The following changes only apply when building with --cfg tokio_unstable

• rt: breaking change overhaul runtime metrics API (#4373)

1.15.0 (December 15, 2021)

Fixed

• io: add cooperative yielding support to io::empty() (#4300)
• time: make timeout robust against budget-depleting tasks (#4314)

Changed

• update minimum supported Rust version to 1.46.

Added

• time: add Interval::reset() (#4248)
• io: add explicit lifetimes to AsyncFdReadyGuard (#4267)
• process: add Command::as_std() (#4295)

Added (unstable)

• tracing: instrument tokio::sync types (#4302)

1.14.0 (November 15, 2021)

Fixed

• macros: fix compiler errors when using mut patterns in select! (#4211)
• sync: fix a data race between oneshot::Sender::send and awaiting a oneshot::Receiver when the oneshot has been closed (#4226)
• sync: make AtomicWaker panic safe (#3689)
• runtime: fix basic scheduler dropping tasks outside a runtime context (#4213)

Added

• stats: add RuntimeStats::busy_duration_total (#4179, #4223)

Changed

• io: updated copy buffer size to match std::io::copy (#4209)

Documented

• io: rename buffer to file in doc-test (#4230)
• sync: fix Notify example (#4212)

1.13.1 (November 15, 2021)

Fixed

• sync: fix a data race between oneshot::Sender::send and awaiting a oneshot::Receiver when the oneshot has been closed (#4226)

1.13.0 (October 29, 2021)

Fixed

• sync: fix Notify to clone the waker before locking its waiter list (#4129)
• tokio: add riscv32 to non atomic64 architectures (#4185)

Added

• net: add poll_{recv,send}_ready methods to udp and uds_datagram (#4131)
• net: add try_*, readable, writable, ready, and peer_addr methods to split halves (#4120)
• sync: add blocking_lock to Mutex (#4130)
• sync: add watch::Sender::send_replace (#3962, #4195)
• sync: expand Debug for Mutex<T> impl to unsized T (#4134)
• tracing: instrument time::Sleep (#4072)
• tracing: use structured location fields for spawned tasks (#4128)

Changed

• io: add assert in copy_bidirectional that poll_write is sensible (#4125)
• macros: use qualified syntax when polling in select! (#4192)
• runtime: handle block_on wakeups better (#4157)
• task: allocate callback on heap immediately in debug mode (#4203)
• tokio: assert platform-minimum requirements at build time (#3797)

Documented

• docs: conversion of doc comments to indicative mood (#4174)
• docs: add returning on the first error example for try_join! (#4133)
• docs: fixing broken links in tokio/src/lib.rs (#4132)
• signal: add example with background listener (#4171)
• sync: add more oneshot examples (#4153)
• time: document Interval::tick cancel safety (#4152)

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)

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)

1.11.0 (August 31, 2021)

Fixed

• time: don't panic when Instant is not monotonic (#4044)
• io: fix panic in fill_buf by not calling poll_fill_buf twice (#4084)

Added

• watch: add watch::Sender::subscribe (#3800)
• process: add from_std to ChildStd* (#4045)
• stats: initial work on runtime stats (#4043)

Changed

• tracing: change span naming to new console convention (#4042)
• io: speed-up waking by using uninitialized array (#4055, #4071, #4075)

Documented

• time: make Sleep examples easier to find (#4040)

1.10.1 (August 24, 2021)

Fixed

• runtime: fix leak in UnownedTask (#4063)

1.10.0 (August 12, 2021)

Added

• io: add (read|write)_f(32|64)[_le] methods (#4022)
• io: add fill_buf and consume to AsyncBufReadExt (#3991)
• process: add Child::raw_handle() on windows (#3998)

Fixed

• doc: fix non-doc builds with --cfg docsrs (#4020)
• io: flush eagerly in io::copy (#4001)
• runtime: a debug assert was sometimes triggered during shutdown (#4005)
• sync: use spin_loop_hint instead of yield_now in mpsc (#4037)
• tokio: the test-util feature depends on rt, sync, and time (#4036)

Changes

• runtime: reorganize parts of the runtime (#3979, #4005)
• signal: make windows docs for signal module show up on unix builds (#3770)
• task: quickly send task to heap on debug mode (#4009)

Documented

• io: document cancellation safety of AsyncBufReadExt (#3997)
• sync: document when watch::send fails (#4021)

1.9.0 (July 22, 2021)

Added

• net: allow customized I/O operations for TcpStream (#3888)
• sync: add getter for the mutex from a guard (#3928)
• task: expose nameable future for TaskLocal::scope (#3273)

Fixed

• Fix leak if output of future panics on drop (#3967)
• Fix leak in LocalSet (#3978)

Changes

• runtime: reorganize parts of the runtime (#3909, #3939, #3950, #3955, #3980)
• sync: clean up OnceCell (#3945)
• task: remove mutex in JoinError (#3959)

1.8.3 (July 26, 2021)

This release backports two fixes from 1.9.0

Fixed

• Fix leak if output of future panics on drop (#3967)
• Fix leak in LocalSet (#3978)

1.8.2 (July 19, 2021)

Fixes a missed edge case from 1.8.1.

Fixed

• runtime: drop canceled future on next poll (#3965)

1.8.1 (July 6, 2021)

Forward ports 1.5.1 fixes.

Fixed

• runtime: remotely abort tasks on JoinHandle::abort (#3934)

1.8.0 (July 2, 2021)

Added

• io: add get_{ref,mut} methods to AsyncFdReadyGuard and AsyncFdReadyMutGuard (#3807)
• io: efficient implementation of vectored writes for BufWriter (#3163)
• net: add ready/try methods to NamedPipe{Client,Server} (#3866, #3899)
• sync: add watch::Receiver::borrow_and_update (#3813)
• sync: implement From<T> for OnceCell<T> (#3877)
• time: allow users to specify Interval behaviour when delayed (#3721)

Added (unstable)

• rt: add tokio::task::Builder (#3881)

Fixed

• net: handle HUP event with UnixStream (#3898)

Documented

• doc: document cancellation safety (#3900)
• time: add wait alias to sleep (#3897)
• time: document auto-advancing behaviour of runtime (#3763)

1.7.2 (July 6, 2021)

Forward ports 1.5.1 fixes.

Fixed

• runtime: remotely abort tasks on JoinHandle::abort (#3934)

1.7.1 (June 18, 2021)

Fixed

• runtime: fix early task shutdown during runtime shutdown (#3870)

1.7.0 (June 15, 2021)

Added

• net: add named pipes on windows (#3760)
• net: add TcpSocket from std::net::TcpStream conversion (#3838)
• sync: add receiver_count to watch::Sender (#3729)
• sync: export sync::notify::Notified future publicly (#3840)
• tracing: instrument task wakers (#3836)

Fixed

• macros: suppress clippy::default_numeric_fallback lint in generated code (#3831)
• runtime: immediately drop new tasks when runtime is shut down (#3752)
• sync: deprecate unused mpsc::RecvError type (#3833)

Documented

• io: clarify EOF condition for AsyncReadExt::read_buf (#3850)
• io: clarify limits on return values of AsyncWrite::poll_write (#3820)
• sync: add examples to Semaphore (#3808)

1.6.3 (July 6, 2021)

Forward ports 1.5.1 fixes.

Fixed

• runtime: remotely abort tasks on JoinHandle::abort (#3934)

1.6.2 (June 14, 2021)

Fixes

• test: sub-ms time:advance regression introduced in 1.6 (#3852)

1.6.1 (May 28, 2021)

This release reverts #3518 because it doesn't work on some kernels due to a kernel bug. (#3803)

1.6.0 (May 14, 2021)

Added

• fs: try doing a non-blocking read before punting to the threadpool (#3518)
• io: add write_all_buf to AsyncWriteExt (#3737)
• io: implement AsyncSeek for BufReader, BufWriter, and BufStream (#3491)
• net: support non-blocking vectored I/O (#3761)
• sync: add mpsc::Sender::{reserve_owned, try_reserve_owned} (#3704)
• sync: add a MutexGuard::map method that returns a MappedMutexGuard (#2472)
• time: add getter for Interval's period (#3705)

Fixed

• io: wake pending writers on DuplexStream close (#3756)
• process: avoid redundant effort to reap orphan processes (#3743)
• signal: use std::os::raw::c_int instead of libc::c_int on public API (#3774)
• sync: preserve permit state in notify_waiters (#3660)
• task: update JoinHandle panic message (#3727)
• time: prevent time::advance from going too far (#3712)

Documented

• net: hide net::unix::datagram module from docs (#3775)
• process: updated example (#3748)
• sync: Barrier doc should use task, not thread (#3780)
• task: update documentation on block_in_place (#3753)

1.5.1 (July 6, 2021)

Fixed

• runtime: remotely abort tasks on JoinHandle::abort (#3934)

1.5.0 (April 12, 2021)

Added

• io: add AsyncSeekExt::stream_position (#3650)
• io: add AsyncWriteExt::write_vectored (#3678)
• io: add a copy_bidirectional utility (#3572)
• net: implement IntoRawFd for TcpSocket (#3684)
• sync: add OnceCell (#3591)
• sync: add OwnedRwLockReadGuard and OwnedRwLockWriteGuard (#3340)
• sync: add Semaphore::is_closed (#3673)
• sync: add mpsc::Sender::capacity (#3690)
• sync: allow configuring RwLock max reads (#3644)
• task: add sync_scope for LocalKey (#3612)

Fixed

• chore: try to avoid noalias attributes on intrusive linked list (#3654)
• rt: fix panic in JoinHandle::abort() when called from other threads (#3672)
• sync: don't panic in oneshot::try_recv (#3674)
• sync: fix notifications getting dropped on receiver drop (#3652)
• sync: fix Semaphore permit overflow calculation (#3644)

Documented

• io: clarify requirements of AsyncFd (#3635)
• runtime: fix unclear docs for {Handle,Runtime}::block_on (#3628)
• sync: document that Semaphore is fair (#3693)
• sync: improve doc on blocking mutex (#3645)

1.4.0 (March 20, 2021)

Added

• macros: introduce biased argument for select! (#3603)
• runtime: add Handle::block_on (#3569)

Fixed

• runtime: avoid unnecessary polling of block_on future (#3582)
• runtime: fix memory leak/growth when creating many runtimes (#3564)
• runtime: mark EnterGuard with must_use (#3609)

Documented

• chore: mention fix for building docs in contributing guide (#3618)
• doc: add link to PollSender (#3613)
• doc: alias sleep to delay (#3604)
• sync: improve Mutex FIFO explanation (#3615)
• timer: fix double newline in module docs (#3617)

1.3.0 (March 9, 2021)

Added

• coop: expose an unconstrained() opt-out (#3547)
• net: add into_std for net types without it (#3509)
• sync: add same_channel method to mpsc::Sender (#3532)
• sync: add {try_,}acquire_many_owned to Semaphore (#3535)
• sync: add back RwLockWriteGuard::map and RwLockWriteGuard::try_map (#3348)

Fixed

• sync: allow oneshot::Receiver::close after successful try_recv (#3552)
• time: do not panic on timeout(Duration::MAX) (#3551)

Documented

• doc: doc aliases for pre-1.0 function names (#3523)
• io: fix typos (#3541)
• io: note the EOF behaviour of read_until (#3536)
• io: update AsyncRead::poll_read doc (#3557)
• net: update UdpSocket splitting doc (#3517)
• runtime: add link to LocalSet on new_current_thread (#3508)
• runtime: update documentation of thread limits (#3527)
• sync: do not recommend join_all for Barrier (#3514)
• sync: documentation for oneshot (#3592)
• sync: rename notify to notify_one (#3526)
• time: fix typo in Sleep doc (#3515)
• time: sync interval.rs and time/mod.rs docs (#3533)

1.2.0 (February 5, 2021)

Added

• signal: make Signal::poll_recv method public (#3383)

Fixed

• time: make test-util paused time fully deterministic (#3492)

Documented

• sync: link to new broadcast and watch wrappers (#3504)

1.1.1 (January 29, 2021)

Forward ports 1.0.3 fix.

Fixed

• io: memory leak during shutdown (#3477).

1.1.0 (January 22, 2021)

Added

• net: add try_read_buf and try_recv_buf (#3351)
• mpsc: Add Sender::try_reserve function (#3418)
• sync: add RwLock try_read and try_write methods (#3400)
• io: add ReadBuf::inner_mut (#3443)

Changed

• macros: improve select! error message (#3352)
• io: keep track of initialized bytes in read_to_end (#3426)
• runtime: consolidate errors for context missing (#3441)

Fixed

• task: wake LocalSet on spawn_local (#3369)
• sync: fix panic in broadcast::Receiver drop (#3434)

Documented

• stream: link to new Stream wrappers in tokio-stream (#3343)
• docs: mention that test-util feature is not enabled with full (#3397)
• process: add documentation to process::Child fields (#3437)
• io: clarify AsyncFd docs about changes of the inner fd (#3430)
• net: update datagram docs on splitting (#3448)
• time: document that Sleep is not Unpin (#3457)
• sync: add link to PollSemaphore (#3456)
• task: add LocalSet example (#3438)
• sync: improve bounded mpsc documentation (#3458)

1.0.3 (January 28, 2021)

Fixed

• io: memory leak during shutdown (#3477).

1.0.2 (January 14, 2021)

Fixed

• io: soundness in read_to_end (#3428).

1.0.1 (December 25, 2020)

This release fixes a soundness hole caused by the combination of RwLockWriteGuard::map and RwLockWriteGuard::downgrade by removing the map function. This is a breaking change, but breaking changes are allowed under our semver policy when they are required to fix a soundness hole. (See this RFC for more.)

Note that we have chosen not to do a deprecation cycle or similar because Tokio 1.0.0 was released two days ago, and therefore the impact should be minimal.

Due to the soundness hole, we have also yanked Tokio version 1.0.0.

Removed

• sync: remove RwLockWriteGuard::map and RwLockWriteGuard::try_map (#3345)

Fixed

• docs: remove stream feature from docs (#3335)

1.0.0 (December 23, 2020)

Commit to the API and long-term support.

Fixed

• sync: spurious wakeup in watch (#3234).

Changed

• io: rename AsyncFd::with_io() to try_io() (#3306)
• fs: avoid OS specific *Ext traits in favor of conditionally defining the fn (#3264).
• fs: Sleep is !Unpin (#3278).
• net: pass SocketAddr by value (#3125).
• net: TcpStream::poll_peek takes ReadBuf (#3259).
• rt: rename runtime::Builder::max_threads() to max_blocking_threads() (#3287).
• time: require current_thread runtime when calling time::pause() (#3289).

Removed

• remove tokio::prelude (#3299).
• io: remove AsyncFd::with_poll() (#3306).
• net: remove {Tcp,Unix}Stream::shutdown() in favor of AsyncWrite::shutdown() (#3298).
• stream: move all stream utilities to tokio-stream until Stream is added to std (#3277).
• sync: mpsc try_recv() due to unexpected behavior (#3263).
• tracing: make unstable as tracing-core is not 1.0 yet (#3266).

Added

• fs: poll_* fns to DirEntry (#3308).
• io: poll_* fns to io::Lines, io::Split (#3308).
• io: _mut method variants to AsyncFd (#3304).
• net: poll_* fns to UnixDatagram (#3223).
• net: UnixStream readiness and non-blocking ops (#3246).
• sync: UnboundedReceiver::blocking_recv() (#3262).
• sync: watch::Sender::borrow() (#3269).
• sync: Semaphore::close() (#3065).
• sync: poll_recv fns to mpsc::Receiver, mpsc::UnboundedReceiver (#3308).
• time: poll_tick fn to time::Interval (#3316).

0.3.6 (December 14, 2020)

Fixed

• rt: fix deadlock in shutdown (#3228)
• rt: fix panic in task abort when off rt (#3159)
• sync: make add_permits panic with usize::MAX >> 3 permits (#3188)
• time: Fix race condition in timer drop (#3229)
• watch: fix spurious wakeup (#3244)

Added

• example: add back udp-codec example (#3205)
• net: add TcpStream::into_std (#3189)

0.3.5 (November 30, 2020)

Fixed

• rt: fix shutdown_timeout(0) (#3196).
• time: fixed race condition with small sleeps (#3069).

Added

• io: AsyncFd::with_interest() (#3167).
• signal: CtrlC stream on windows (#3186).

0.3.4 (November 18, 2020)

Fixed

• stream: StreamMap Default impl bound (#3093).
• io: AsyncFd::into_inner() should deregister the FD (#3104).

Changed

• meta: parking_lot feature enabled with full (#3119).

Added

• io: AsyncWrite vectored writes (#3149).
• net: TCP/UDP readiness and non-blocking ops (#3130, #2743, #3138).
• net: TCP socket option (linger, send/recv buf size) (#3145, #3143).
• net: PID field in UCred with solaris/illumos (#3085).
• rt: runtime::Handle allows spawning onto a runtime (#3079).
• sync: Notify::notify_waiters() (#3098).
• sync: acquire_many(), try_acquire_many() to Semaphore (#3067).

0.3.3 (November 2, 2020)

Fixes a soundness hole by adding a missing Send bound to Runtime::spawn_blocking().

Fixed

• rt: include missing Send, fixing soundness hole (#3089).
• tracing: avoid huge trace span names (#3074).

Added

• net: TcpSocket::reuseport(), TcpSocket::set_reuseport() (#3083).
• net: TcpSocket::reuseaddr() (#3093).
• net: TcpSocket::local_addr() (#3093).
• net: add pid to UCred (#2633).

0.3.2 (October 27, 2020)

Adds AsyncFd as a replacement for v0.2's PollEvented.

Fixed

• io: fix a potential deadlock when shutting down the I/O driver (#2903).
• sync: RwLockWriteGuard::downgrade() bug (#2957).

Added

• io: AsyncFd for receiving readiness events on raw FDs (#2903).
• net: poll_* function on UdpSocket (#2981).
• net: UdpSocket::take_error() (#3051).
• sync: oneshot::Sender::poll_closed() (#3032).

0.3.1 (October 21, 2020)

This release fixes an use-after-free in the IO driver. Additionally, the read_buf and write_buf methods have been added back to the IO traits, as the bytes crate is now on track to reach version 1.0 together with Tokio.

Fixed

• net: fix use-after-free (#3019).
• fs: ensure buffered data is written on shutdown (#3009).

Added

• io: copy_buf() (#2884).
• io: AsyncReadExt::read_buf(), AsyncReadExt::write_buf() for working with Buf/BufMut (#3003).
• rt: Runtime::spawn_blocking() (#2980).
• sync: watch::Sender::is_closed() (#2991).

0.3.0 (October 15, 2020)

This represents a 1.0 beta release. APIs are polished and future-proofed. APIs not included for 1.0 stabilization have been removed.

Biggest changes are:

• I/O driver internal rewrite. The windows implementation includes significant changes.
• Runtime API is polished, especially with how it interacts with feature flag combinations.
• Feature flags are simplified
  • rt-core and rt-util are combined to rt
  • rt-threaded is renamed to rt-multi-thread to match builder API
  • tcp, udp, uds, dns are combined to net.
  • parking_lot is included with full

Changes

• meta: Minimum supported Rust version is now 1.45.
• io: AsyncRead trait now takes ReadBuf in order to safely handle reading into uninitialized memory (#2758).
• io: Internal I/O driver storage is now able to compact (#2757).
• rt: Runtime::block_on now takes &self (#2782).
• sync: watch reworked to decouple receiving a change notification from receiving the value (#2814, #2806).
• sync: Notify::notify is renamed to notify_one (#2822).
• process: Child::kill is now an async fn that cleans zombies (#2823).
• sync: use const fn constructors as possible (#2833, #2790)
• signal: reduce cross-thread notification (#2835).
• net: tcp,udp,uds types support operations with &self (#2828, #2919, #2934).
• sync: blocking mpsc channel supports send with &self (#2861).
• time: rename delay_for and delay_until to sleep and sleep_until (#2826).
• io: upgrade to mio 0.7 (#2893).
• io: AsyncSeek trait is tweaked (#2885).
• fs: File operations take &self (#2930).
• rt: runtime API, and #[tokio::main] macro polish (#2876)
• rt: Runtime::enter uses an RAII guard instead of a closure (#2954).
• net: the from_std function on all sockets no longer sets socket into non-blocking mode (#2893)

Added

• sync: map function to lock guards (#2445).
• sync: blocking_recv and blocking_send fns to mpsc for use outside of Tokio (#2685).
• rt: Builder::thread_name_fn for configuring thread names (#1921).
• fs: impl FromRawFd and FromRawHandle for File (#2792).
• process: Child::wait and Child::try_wait (#2796).
• rt: support configuring thread keep-alive duration (#2809).
• rt: task::JoinHandle::abort forcibly cancels a spawned task (#2474).
• sync: RwLock write guard to read guard downgrading (#2733).
• net: add poll_* functions that take &self to all net types (#2845)
• sync: get_mut() for Mutex, RwLock (#2856).
• sync: mpsc::Sender::closed() waits for Receiver half to close (#2840).
• sync: mpsc::Sender::is_closed() returns true if Receiver half is closed (#2726).
• stream: iter and iter_mut to StreamMap (#2890).
• net: implement AsRawSocket on windows (#2911).
• net: TcpSocket creates a socket without binding or listening (#2920).

Removed

• io: vectored ops are removed from AsyncRead, AsyncWrite traits (#2882).
• io: mio is removed from the public API. PollEvented and Registration are removed (#2893).
• io: remove bytes from public API. Buf and BufMut implementation are removed (#2908).
• time: DelayQueue is moved to tokio-util (#2897).

Fixed

• io: stdout and stderr buffering on windows (#2734).

0.2.22 (July 21, 2020)

Fixes

• docs: misc improvements (#2572, #2658, #2663, #2656, #2647, #2630, #2487, #2621, #2624, #2600, #2623, #2622, #2577, #2569, #2589, #2575, #2540, #2564, #2567, #2520, #2521, #2493)
• rt: allow calls to block_on inside calls to block_in_place that are themselves inside block_on (#2645)
• net: fix non-portable behavior when dropping TcpStream OwnedWriteHalf (#2597)
• io: improve stack usage by allocating large buffers on directly on the heap (#2634)
• io: fix unsound pin projection in AsyncReadExt::read_buf and AsyncWriteExt::write_buf (#2612)
• io: fix unnecessary zeroing for AsyncRead implementors (#2525)
• io: Fix BufReader not correctly forwarding poll_write_buf (#2654)
• io: fix panic in AsyncReadExt::read_line (#2541)

Changes

• coop: returning Poll::Pending no longer decrements the task budget (#2549)

Added

• io: little-endian variants of AsyncReadExt and AsyncWriteExt methods (#1915)
• task: add tracing instrumentation to spawned tasks (#2655)
• sync: allow unsized types in Mutex and RwLock (via default constructors) (#2615)
• net: add ToSocketAddrs implementation for &[SocketAddr] (#2604)
• fs: add OpenOptionsExt for OpenOptions (#2515)
• fs: add DirBuilder (#2524)

0.2.21 (May 13, 2020)

Fixes

• macros: disambiguate built-in #[test] attribute in macro expansion (#2503)
• rt: LocalSet and task budgeting (#2462).
• rt: task budgeting with block_in_place (#2502).
• sync: release broadcast channel memory without sending a value (#2509).
• time: notify when resetting a Delay to a time in the past (#2290)

Added

• io: get_mut, get_ref, and into_inner to Lines (#2450).
• io: mio::Ready argument to PollEvented (#2419).
• os: illumos support (#2486).
• rt: Handle::spawn_blocking (#2501).
• sync: OwnedMutexGuard for Arc<Mutex<T>> (#2455).

0.2.20 (April 28, 2020)

Fixes

• sync: broadcast closing the channel no longer requires capacity (#2448).
• rt: regression when configuring runtime with max_threads less than number of CPUs (#2457).

0.2.19 (April 24, 2020)

Fixes

• docs: misc improvements (#2400, #2405, #2414, #2420, #2423, #2426, #2427, #2434, #2436, #2440).
• rt: support block_in_place in more contexts (#2409, #2410).
• stream: no panic in merge() and chain() when using size_hint() (#2430).
• task: include visibility modifier when defining a task-local (#2416).

Added

• rt: runtime::Handle::block_on (#2437).
• sync: owned Semaphore permit (#2421).
• tcp: owned split (#2270).

0.2.18 (April 12, 2020)

Fixes

• task: LocalSet was incorrectly marked as Send (#2398)
• io: correctly report WriteZero failure in write_int (#2334)

0.2.17 (April 9, 2020)

Fixes

• rt: bug in work-stealing queue (#2387)

Changes

• rt: threadpool uses logical CPU count instead of physical by default (#2391)

0.2.16 (April 3, 2020)

Fixes

• sync: fix a regression where Mutex, Semaphore, and RwLock futures no longer implement Sync (#2375)
• fs: fix fs::copy not copying file permissions (#2354)

Added

• time: added deadline method to delay_queue::Expired (#2300)
• io: added StreamReader (#2052)

0.2.15 (April 2, 2020)

Fixes

• rt: fix queue regression (#2362).

Added

• sync: Add disarm to mpsc::Sender (#2358).

0.2.14 (April 1, 2020)

Fixes

• rt: concurrency bug in scheduler (#2273).
• rt: concurrency bug with shell runtime (#2333).
• test-util: correct pause/resume of time (#2253).
• time: DelayQueue correct wakeup after insert (#2285).

Added

• io: impl RawFd, AsRawHandle for std io types (#2335).
• rt: automatic cooperative task yielding (#2160, #2343, #2349).
• sync: RwLock::into_inner (#2321).

Changed

• sync: semaphore, mutex internals rewritten to avoid allocations (#2325).

0.2.13 (February 28, 2020)

Fixes

• macros: unresolved import in pin! (#2281).

0.2.12 (February 27, 2020)

Fixes

• net: UnixStream::poll_shutdown should call shutdown(Write) (#2245).
• process: Wake up read and write on EPOLLERR (#2218).
• rt: potential deadlock when using block_in_place and shutting down the runtime (#2119).
• rt: only detect number of CPUs if core_threads not specified (#2238).
• sync: reduce watch::Receiver struct size (#2191).
• time: succeed when setting delay of $MAX-1 (#2184).
• time: avoid having to poll DelayQueue after inserting new delay (#2217).

Added

• macros: pin! variant that assigns to identifier and pins (#2274).
• net: impl Stream for Listener types (#2275).
• rt: Runtime::shutdown_timeout waits for runtime to shutdown for specified duration (#2186).
• stream: StreamMap merges streams and can insert / remove streams at runtime (#2185).
• stream: StreamExt::skip() skips a fixed number of items (#2204).
• stream: StreamExt::skip_while() skips items based on a predicate (#2205).
• sync: Notify provides basic async / await task notification (#2210).
• sync: Mutex::into_inner retrieves guarded data (#2250).
• sync: mpsc::Sender::send_timeout sends, waiting for up to specified duration for channel capacity (#2227).
• time: impl Ord and Hash for Instant (#2239).

0.2.11 (January 27, 2020)

Fixes

• docs: misc fixes and tweaks (#2155, #2103, #2027, #2167, #2175).
• macros: handle generics in #[tokio::main] method (#2177).
• sync: broadcast potential lost notifications (#2135).
• rt: improve "no runtime" panic messages (#2145).

Added

• optional support for using parking_lot internally (#2164).
• fs: fs::copy, an async version of std::fs::copy (#2079).
• macros: select! waits for the first branch to complete (#2152).
• macros: join! waits for all branches to complete (#2158).
• macros: try_join! waits for all branches to complete or the first error (#2169).
• macros: pin! pins a value to the stack (#2163).
• net: ReadHalf::poll() and ReadHalf::poll_peak (#2151)
• stream: StreamExt::timeout() sets a per-item max duration (#2149).
• stream: StreamExt::fold() applies a function, producing a single value. (#2122).
• sync: impl Eq, PartialEq for oneshot::RecvError (#2168).
• task: methods for inspecting the JoinError cause (#2051).

0.2.10 (January 21, 2020)

Fixes

• #[tokio::main] when rt-core feature flag is not enabled (#2139).
• remove AsyncBufRead from BufStream impl block (#2108).
• potential undefined behavior when implementing AsyncRead incorrectly (#2030).

Added

• BufStream::with_capacity (#2125).
• impl From and Default for RwLock (#2089).
• io::ReadHalf::is_pair_of checks if provided WriteHalf is for the same underlying object (#1762, #2144).
• runtime::Handle::try_current() returns a handle to the current runtime (#2118).
• stream::empty() returns an immediately ready empty stream (#2092).
• stream::once(val) returns a stream that yields a single value: val (#2094).
• stream::pending() returns a stream that never becomes ready (#2092).
• StreamExt::chain() sequences a second stream after the first completes (#2093).
• StreamExt::collect() transform a stream into a collection (#2109).
• StreamExt::fuse ends the stream after the first None (#2085).
• StreamExt::merge combines two streams, yielding values as they become ready (#2091).
• Task-local storage (#2126).

0.2.9 (January 9, 2020)

Fixes

• AsyncSeek impl for File (#1986).
• rt: shutdown deadlock in threaded_scheduler (#2074, #2082).
• rt: memory ordering when dropping JoinHandle (#2044).
• docs: misc API documentation fixes and improvements.

0.2.8 (January 7, 2020)

Fixes

• depend on new version of tokio-macros.

0.2.7 (January 7, 2020)

Fixes

• potential deadlock when dropping basic_scheduler Runtime.
• calling spawn_blocking from within a spawn_blocking (#2006).
• storing a Runtime instance in a thread-local (#2011).
• miscellaneous documentation fixes.
• rt: fix Waker::will_wake to return true when tasks match (#2045).
• test-util: time::advance runs pending tasks before changing the time (#2059).

Added

• net::lookup_host maps a T: ToSocketAddrs to a stream of SocketAddrs (#1870).
• process::Child fields are made public to match std (#2014).
• impl Stream for sync::broadcast::Receiver (#2012).
• sync::RwLock provides an asynchronous read-write lock (#1699).
• runtime::Handle::current returns the handle for the current runtime (#2040).
• StreamExt::filter filters stream values according to a predicate (#2001).
• StreamExt::filter_map simultaneously filter and map stream values (#2001).
• StreamExt::try_next convenience for streams of Result<T, E> (#2005).
• StreamExt::take limits a stream to a specified number of values (#2025).
• StreamExt::take_while limits a stream based on a predicate (#2029).
• StreamExt::all tests if every element of the stream matches a predicate (#2035).
• StreamExt::any tests if any element of the stream matches a predicate (#2034).
• task::LocalSet.await runs spawned tasks until the set is idle (#1971).
• time::DelayQueue::len returns the number entries in the queue (#1755).
• expose runtime options from the #[tokio::main] and #[tokio::test] (#2022).

0.2.6 (December 19, 2019)

Fixes

• fs::File::seek API regression (#1991).

0.2.5 (December 18, 2019)

Added

• io::AsyncSeek trait (#1924).
• Mutex::try_lock (#1939)
• mpsc::Receiver::try_recv and mpsc::UnboundedReceiver::try_recv (#1939).
• writev support for TcpStream (#1956).
• time::throttle for throttling streams (#1949).
• implement Stream for time::DelayQueue (#1975).
• sync::broadcast provides a fan-out channel (#1943).
• sync::Semaphore provides an async semaphore (#1973).
• stream::StreamExt provides stream utilities (#1962).

Fixes

• deadlock risk while shutting down the runtime (#1972).
• panic while shutting down the runtime (#1978).
• sync::MutexGuard debug output (#1961).
• misc doc improvements (#1933, #1934, #1940, #1942).

Changes

• runtime threads are configured with runtime::Builder::core_threads and runtime::Builder::max_threads. runtime::Builder::num_threads is deprecated (#1977).

0.2.4 (December 6, 2019)

Fixes

• sync::Mutex deadlock when lock() future is dropped early (#1898).

0.2.3 (December 6, 2019)

Added

• read / write integers using AsyncReadExt and AsyncWriteExt (#1863).
• read_buf / write_buf for reading / writing Buf / BufMut (#1881).
• TcpStream::poll_peek - pollable API for performing TCP peek (#1864).
• sync::oneshot::error::TryRecvError provides variants to detect the error kind (#1874).
• LocalSet::block_on accepts !'static task (#1882).
• task::JoinError is now Sync (#1888).
• impl conversions between tokio::time::Instant and std::time::Instant (#1904).

Fixes

• calling spawn_blocking after runtime shutdown (#1875).
• LocalSet drop infinite loop (#1892).
• LocalSet hang under load (#1905).
• improved documentation (#1865, #1866, #1868, #1874, #1876, #1911).

0.2.2 (November 29, 2019)

Fixes

• scheduling with basic_scheduler (#1861).
• update spawn panic message to specify that a task scheduler is required (#1839).
• API docs example for runtime::Builder to include a task scheduler (#1841).
• general documentation (#1834).
• building on illumos/solaris (#1772).
• panic when dropping LocalSet (#1843).
• API docs mention the required Cargo features for Builder::{basic, threaded}_scheduler (#1858).

Added

• impl Stream for signal::unix::Signal (#1849).
• API docs for platform specific behavior of signal::ctrl_c and signal::unix::Signal (#1854).
• API docs for signal::unix::Signal::{recv, poll_recv} and signal::windows::CtrlBreak::{recv, poll_recv} (#1854).
• File::into_std and File::try_into_std methods (#1856).

0.2.1 (November 26, 2019)

Fixes

• API docs for TcpListener::incoming, UnixListener::incoming (#1831).

Added

• tokio::task::LocalSet provides a strategy for spawning !Send tasks (#1733).
• export tokio::time::Elapsed (#1826).
• impl AsRawFd, AsRawHandle for tokio::fs::File (#1827).

0.2.0 (November 26, 2019)

A major breaking change. Most implementation and APIs have changed one way or another. This changelog entry contains a highlight

Changed

• APIs are updated to use async / await.
• most tokio-* crates are collapsed into this crate.
• Scheduler is rewritten.
• tokio::spawn returns a JoinHandle.
• A single I/O / timer is used per runtime.
• I/O driver uses a concurrent slab for allocating state.
• components are made available via feature flag.
• Use bytes 0.5
• tokio::codec is moved to tokio-util.

Removed

• Standalone timer and net drivers are removed, use Runtime instead
• current_thread runtime is removed, use tokio::runtime::Runtime with basic_scheduler instead.

0.1.21 (May 30, 2019)

Changed

• Bump tokio-trace-core version to 0.2 (#1111).

0.1.20 (May 14, 2019)

Added

• tokio::runtime::Builder::panic_handler allows configuring handling panics on the runtime (#1055).

0.1.19 (April 22, 2019)

Added

• Re-export tokio::sync::Mutex primitive (#964).

0.1.18 (March 22, 2019)

Added

• TypedExecutor re-export and implementations (#993).

0.1.17 (March 13, 2019)

Added

• Propagate trace subscriber in the runtime (#966).

0.1.16 (March 1, 2019)

Fixed

• async-await: track latest nightly changes (#940).

Added

• sync::Watch, a single value broadcast channel (#922).
• Async equivalent of read / write file helpers being added to std (#896).

0.1.15 (January 24, 2019)

Added

• Re-export tokio-sync APIs (#839).
• Stream enumerate combinator (#832).

0.1.14 (January 6, 2019)

• Use feature flags to break up the crate, allowing users to pick & choose components (#808).
• Export UnixDatagram and UnixDatagramFramed (#772).

0.1.13 (November 21, 2018)

• Fix Runtime::reactor() when no tasks are spawned (#721).
• runtime::Builder no longer uses deprecated methods (#749).
• Provide after_start and before_stop configuration settings for Runtime (#756).
• Implement throttle stream combinator (#736).

0.1.12 (October 23, 2018)

• runtime: expose keep_alive on runtime builder (#676).
• runtime: create a reactor per worker thread (#660).
• codec: fix panic in LengthDelimitedCodec (#682).
• io: re-export tokio_io::io::read function (#689).
• runtime: check for executor re-entry in more places (#708).

0.1.11 (September 28, 2018)

• Fix tokio-async-await dependency (#675).

0.1.10 (September 27, 2018)

• Fix minimal versions

0.1.9 (September 27, 2018)

• Experimental async/await improvements (#661).
• Re-export TaskExecutor from tokio-current-thread (#652).
• Improve Runtime builder API (#645).
• tokio::run panics when called from the context of an executor (#646).
• Introduce StreamExt with a timeout helper (#573).
• Move length_delimited into tokio (#575).
• Re-organize tokio::net module (#548).
• Re-export tokio-current-thread::spawn in current_thread runtime (#579).

0.1.8 (August 23, 2018)

• Extract tokio::executor::current_thread to a sub crate (#370)
• Add Runtime::block_on (#398)
• Add runtime::current_thread::block_on_all (#477)
• Misc documentation improvements (#450)
• Implement std::error::Error for error types (#501)

0.1.7 (June 6, 2018)

• Add Runtime::block_on for concurrent runtime (#391).
• Provide handle to current_thread::Runtime that allows spawning tasks from other threads (#340).
• Provide clock::now(), a configurable source of time (#381).

0.1.6 (May 2, 2018)

• Add asynchronous filesystem APIs (#323).
• Add "current thread" runtime variant (#308).
• CurrentThread: Expose inner Park instance.
• Improve fairness of CurrentThread executor (#313).

0.1.5 (March 30, 2018)

• Provide timer API (#266)

0.1.4 (March 22, 2018)

• Fix build on FreeBSD (#218)
• Shutdown the Runtime when the handle is dropped (#214)
• Set Runtime thread name prefix for worker threads (#232)
• Add builder for Runtime (#234)
• Extract TCP and UDP types into separate crates (#224)
• Optionally support futures 0.2.

0.1.3 (March 09, 2018)

• Fix CurrentThread::turn to block on idle (#212).

0.1.2 (March 09, 2018)

• Introduce Tokio Runtime (#141)
• Provide CurrentThread for more flexible usage of current thread executor (#141).
• Add Lio for platforms that support it (#142).
• I/O resources now lazily bind to the reactor (#160).
• Extract Reactor to dedicated crate (#169)
• Add facade to sub crates and add prelude (#166).
• Switch TCP/UDP fns to poll_ -> Poll<...> style (#175)

0.1.1 (February 09, 2018)

• Doc fixes

0.1.0 (February 07, 2018)

• Initial crate released based on RFC.