# async-lock[![Build](https://github.com/smol-rs/async-lock/actions/workflows/ci.yml/badge.svg)](https://github.com/smol-rs/async-lock/actions)[![License](https://img.shields.io/badge/license-Apache--2.0_OR_MIT-blue.svg)](https://github.com/smol-rs/async-lock)[![Cargo](https://img.shields.io/crates/v/async-lock.svg)](https://crates.io/crates/async-lock)[![Documentation](https://docs.rs/async-lock/badge.svg)](https://docs.rs/async-lock)Async synchronization primitives.This crate provides the following primitives:* `Barrier` - enables tasks to synchronize all together at the same time.* `Mutex` - a mutual exclusion lock.* `RwLock` - a reader-writer lock, allowing any number of readers or a single writer.* `Semaphore` - limits the number of concurrent operations.## LicenseLicensed under either of * Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0) * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)at your option.#### ContributionUnless you explicitly state otherwise, any contribution intentionally submittedfor inclusion in the work by you, as defined in the Apache-2.0 license, shall bedual licensed as above, without any additional terms or conditions.