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# Changelog
All notable changes to this project will be documented in this file.
## [Unreleased]
_No unreleased changes in the pipeline at the moment._
## [5.0.6] - 2021-01-16
### Added
- As a result of the bugfix mentioned below, there is no performance motivation
to gate `raw` features behind a feature flag, so those features are now
available by default without a `raw_` prefix. Usage of the `raw_` prefix and
the `raw` feature flag is deprecated and these may be removed in a future
major release, but it doesn't harm to keep them indefinitely for now.
### Changed
- Benchmarks now use `criterion`, and have been significantly cleaned up along
the way. They are now more extensive and more reliable.
- Moved MSRV to Rust 1.36 because we now use crossbeam for testing, which
requires that much. The crate itself should still support Rust 1.34 for now,
but we cannot test that it continues doing so...
### Fixed
- Removed a possibility of data race that was not observed on current hardware,
but could be triggered by future hardware or compiler evolutions. See
## [5.0.5] - 2020-07-05
### Changed
- Use only cache-padded instead of the full crossbeam-utils crate
- Clean up CI config and cache Rust toolchain there
## [5.0.4] - 2020-02-10
### Added
- Add a changelog to the repository.
### Changed
- Deduplicate CI configuration some more.
### Fixed
- Drop now-unnecessary manual `rustfmt` configuration.
- Avoid false sharing of back-buffer information.
## [5.0.3] - 2020-02-07
### Changed
- Clean up and deduplicate GitHub Actions configuration.
- Tune down concurrent test speed to reduce CI false positives.
## [5.0.2] - 2020-01-29
### Changed
- Move continuous integration to GitHub Actions.
## [5.0.1] - 2019-11-07
### Fixed
- Update to current version of dependencies.
## [5.0.0] - 2019-04-12
### Changed
- Bump travis CI configuration to Ubuntu Xenial.
- Bump minimal supported Rust version to 1.34.0.
### Fixed
- Don't use an `usize` for buffer indices where an `u8` will suffice.
- Improve Rust API guidelines compliance.
## [4.0.1] - 2018-12-31
### Fixed
- Display `raw` feature documentation on docs.rs.
## [4.0.0] - 2018-12-18
### Changed
- Migrate to Rust 2018.
- Bump minimal supported Rust version to 1.31.0.
### Fixed
- Update to current version of dependencies.
- Start using Clippy and integrate it into continuous integration.
- Re-apply `rustfmt` coding style (was not in CI at the time...).
## [3.0.1] - 2018-08-27
### Fixed
- Make `testbench` a dev-dependency, as it's only used for tests and benchmarks.
## [3.0.0] - 2018-08-27
### Changed
- Buffers are now padded to the size of a cache line to reduce false sharing.
- Bump minimal supported Rust version to 1.26.0.
### Fixed
- Make `testbench` version requirement more explicit.
## [2.0.0] - 2018-02-11
### Changed
- Switch license to MPLv2, which is a better match to Rust's static linking
philosophy than LGPL.
## [1.1.1] - 2017-11-19
### Fixed
- Fix my understanding of Cargo features & make the `raw` feature actually work.
## [1.1.0] - 2017-11-18
### Added
- Allow in-place writes on the input and output side, at the cost of stronger
synchronization barriers, through use of the `raw` Cargo feature.
### Fixed
- Do not require a `Clone` bound on the inner data.
## [1.0.0] - 2017-11-10
### Changed
- Simplify component naming convention, e.g. `TripleBufferInput` -> `Input`.
## [0.3.4] - 2017-06-25
### Changed
- Use `testbench::RaceCell` as an improved form of data race detection in tests.
### Fixed
- Do not require a `PartialEq` bound on the inner data.
## [0.3.3] - 2017-06-15
### Changed
- Tune down concurrent test speed to reduce CI false positives.
## [0.3.2] - 2017-06-15
### Changed
- Tune down concurrent test speed to reduce CI false positives.
## [0.3.1] - 2017-06-15
### Changed
- Tune down concurrent test speed to reduce CI false positives.
## [0.3.0] - 2017-06-14
### Added
- Introduce Travis CI continuous integration.
### Fixed
- Use CI to clarify minimal supported Rust version (currently 1.12.0).
## [0.2.4] - 2017-04-04
### Changed
- Use `testbench` crate for concurrent testing and benchmarking.
## [0.2.3] - 2017-03-24
### Changed
- More detailed comparison with other synchronization primitives in README.
### Fixed
- Adopt `rustfmt` coding style.
## [0.2.2] - 2017-03-20
### Changed
- Reduce reliance on Acquire-Release synchronization.
## [0.2.1] - 2017-03-11
### Changed
- Make README a bit more spambot-proof.
## [0.2.0] - 2017-03-11
### Added
- First tagged release of triple-buffer.