tree: 9f0028005c83a02dfb98a071f7dd6600cd4fe8eb [path history] [tgz]
  1. src/
  2. .android-checksum.json
  3. .cargo-checksum.json
  4. Android.bp
  5. Cargo.lock
  6. Cargo.toml
  7. cargo_embargo.json
  8. CHANGELOG.md
  9. LICENSE-APACHE
  10. METADATA
  11. MODULE_LICENSE_APACHE2
  12. README.md
crates/atomic/README.md

Generic Atomic<T> for Rust

Build Status Crates.io

A Rust library which provides a generic Atomic<T> type for all T: NoUninit types, unlike the standard library which only provides a few fixed atomic types (AtomicBool, AtomicIsize, AtomicUsize, AtomicPtr). The NoUninit bound is from the bytemuck crate, and indicates that a type has no internal padding bytes. You will need to derive or implement this trait for all types used with Atomic<T>.

This library will use native atomic instructions if possible, and will otherwise fall back to a lock-based mechanism. You can use the Atomic::<T>::is_lock_free() function to check whether native atomic operations are supported for a given type. Note that a type must have a power-of-2 size and alignment in order to be used by native atomic instructions.

This crate uses #![no_std] and only depends on libcore.

Documentation

Features

This crate has the following Cargo features:

  • fallback: Fall back to locks when atomic instructions cannot be used. (Enabled by default.)
  • serde: Enables serialization and serialization of Atomic<T> with serde.

Usage

Add this to your Cargo.toml:

[dependencies]
atomic = "0.6"

and this to your crate root:

extern crate atomic;

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.