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CHANGELOG.md

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Version 0.8.20

  • Implement Display for CachePadded. (#1097)

Version 0.8.19

  • Remove dependency on cfg-if. (#1072)

Version 0.8.18

  • Relax the minimum supported Rust version to 1.60. (#1056)
  • Improve scalability of AtomicCell fallback. (#1055)

Version 0.8.17

  • Bump the minimum supported Rust version to 1.61. (#1037)
  • Improve support for targets without atomic CAS or 64-bit atomic. (#1037)
  • Always implement UnwindSafe and RefUnwindSafe for AtomicCell. (#1045)
  • Improve compatibility with Miri, TSan, and loom. (#995, #1003)
  • Improve compatibility with unstable oom=panic. (#1045)
  • Improve implementation of CachePadded. (#1014, #1025)
  • Update loom dependency to 0.7.

Version 0.8.16

  • Improve implementation of CachePadded. (#967)

Version 0.8.15

  • Add #[clippy::has_significant_drop] to ShardedLock{Read,Write}Guard. (#958)
  • Improve handling of very large timeout. (#953)
  • Soft-deprecate thread::scope() in favor of the more efficient std::thread::scope that stabilized on Rust 1.63. (#954)

Version 0.8.14

  • Fix build script bug introduced in 0.8.13. (#932)

Version 0.8.13

Note: This release has been yanked due to regression fixed in 0.8.14.

  • Improve support for custom targets. (#922)

Version 0.8.12

  • Removes the dependency on the once_cell crate to restore the MSRV. (#913)
  • Work around rust-lang#98302, which causes compile error on windows-gnu when LTO is enabled. (#913)

Version 0.8.11

  • Bump the minimum supported Rust version to 1.38. (#877)

Version 0.8.10

  • Fix unsoundness of AtomicCell on types containing niches. (#834) This fix contains breaking changes, but they are allowed because this is a soundness bug fix. See #834 for more.

Version 0.8.9

  • Replace lazy_static with once_cell. (#817)

Version 0.8.8

  • Fix a bug when unstable loom support is enabled. (#787)

Version 0.8.7

  • Add AtomicCell<{i*,u*}>::{fetch_max,fetch_min}. (#785)
  • Add AtomicCell<{i*,u*,bool}>::fetch_nand. (#785)
  • Fix unsoundness of AtomicCell<{i,u}64> arithmetics on 32-bit targets that support Atomic{I,U}64 (#781)

Version 0.8.6

Note: This release has been yanked. See GHSA-qc84-gqf4-9926 for details.

  • Re-add AtomicCell<{i,u}64>::{fetch_add,fetch_sub,fetch_and,fetch_or,fetch_xor} that were accidentally removed in 0.8.0 on targets that do not support Atomic{I,U}64. (#767)
  • Re-add AtomicCell<{i,u}128>::{fetch_add,fetch_sub,fetch_and,fetch_or,fetch_xor} that were accidentally removed in 0.8.0. (#767)

Version 0.8.5

Note: This release has been yanked. See GHSA-qc84-gqf4-9926 for details.

  • Add AtomicCell::fetch_update. (#704)
  • Support targets that do not have atomic CAS on stable Rust. (#698)

Version 0.8.4

Note: This release has been yanked. See GHSA-qc84-gqf4-9926 for details.

  • Bump loom dependency to version 0.5. (#686)

Version 0.8.3

Note: This release has been yanked. See GHSA-qc84-gqf4-9926 for details.

  • Make loom dependency optional. (#666)

Version 0.8.2

Note: This release has been yanked. See GHSA-qc84-gqf4-9926 for details.

  • Deprecate AtomicCell::compare_and_swap. Use AtomicCell::compare_exchange instead. (#619)
  • Add Parker::park_deadline. (#563)
  • Improve implementation of CachePadded. (#636)
  • Add unstable support for loom. (#487)

Version 0.8.1

Note: This release has been yanked. See GHSA-qc84-gqf4-9926 for details.

  • Make AtomicCell::is_lock_free always const fn. (#600)
  • Fix a bug in seq_lock_wide. (#596)
  • Remove const_fn dependency. (#600)
  • crossbeam-utils no longer fails to compile if unable to determine rustc version. Instead, it now displays a warning. (#604)

Version 0.8.0

Note: This release has been yanked. See GHSA-qc84-gqf4-9926 for details.

  • Bump the minimum supported Rust version to 1.36.
  • Remove deprecated AtomicCell::get_mut() and Backoff::is_complete() methods.
  • Remove alloc feature.
  • Make CachePadded::new() const function.
  • Make AtomicCell::is_lock_free() const function at 1.46+.
  • Implement From<T> for AtomicCell<T>.

Version 0.7.2

  • Fix bug in release (yanking 0.7.1)

Version 0.7.1

  • Bump autocfg dependency to version 1.0. (#460)
  • Make AtomicCell lockfree for u8, u16, u32, u64 sized values at 1.34+. (#454)

Version 0.7.0

  • Bump the minimum required version to 1.28.
  • Fix breakage with nightly feature due to rust-lang/rust#65214.
  • Apply #[repr(transparent)] to AtomicCell.
  • Make AtomicCell::new() const function at 1.31+.

Version 0.6.6

  • Add UnwindSafe and RefUnwindSafe impls for AtomicCell.
  • Add AtomicCell::as_ptr().
  • Add AtomicCell::take().
  • Fix a bug in AtomicCell::compare_exchange() and AtomicCell::compare_and_swap().
  • Various documentation improvements.

Version 0.6.5

  • Rename Backoff::is_complete() to Backoff::is_completed().

Version 0.6.4

  • Add WaitGroup, ShardedLock, and Backoff.
  • Add fetch_* methods for AtomicCell<i128> and AtomicCell<u128>.
  • Expand documentation.

Version 0.6.3

  • Add AtomicCell.
  • Improve documentation.

Version 0.6.2

  • Add Parker.
  • Improve documentation.

Version 0.6.1

  • Fix a soundness bug in Scope::spawn().
  • Remove the T: 'scope bound on ScopedJoinHandle.

Version 0.6.0

  • Move AtomicConsume to atomic module.
  • scope() returns a Result of thread joins.
  • Remove spawn_unchecked.
  • Fix a soundness bug due to incorrect lifetimes.
  • Improve documentation.
  • Support nested scoped spawns.
  • Implement Copy, Hash, PartialEq, and Eq for CachePadded.
  • Add CachePadded::into_inner().

Version 0.5.0

  • Reorganize sub-modules and rename functions.

Version 0.4.1

  • Fix a documentation link.

Version 0.4.0

  • CachePadded supports types bigger than 64 bytes.
  • Fix a bug in scoped threads where unitialized memory was being dropped.
  • Minimum required Rust version is now 1.25.

Version 0.3.2

  • Mark load_consume with #[inline].

Version 0.3.1

  • load_consume on ARM and AArch64.

Version 0.3.0

  • Add join for scoped thread API.
  • Add load_consume for atomic load-consume memory ordering.
  • Remove AtomicOption.

Version 0.2.2

  • Support Rust 1.12.1.
  • Call T::clone when cloning a CachePadded<T>.

Version 0.2.1

  • Add use_std feature.

Version 0.2.0

  • Add nightly feature.
  • Use repr(align(64)) on CachePadded with the nightly feature.
  • Implement Drop for CachePadded<T>.
  • Implement Clone for CachePadded<T>.
  • Implement From<T> for CachePadded<T>.
  • Implement better Debug for CachePadded<T>.
  • Write more tests.
  • Add this changelog.
  • Change cache line length to 64 bytes.
  • Remove ZerosValid.

Version 0.1.0

  • Old implementation of CachePadded from crossbeam version 0.3.0