Yash-executor

yash-executor is a Rust library that provides a simple executor for running futures. It is designed to be used in single-threaded applications where you want to run futures concurrently, but you don't need to run them on multiple threads.

This crate is free of locks and atomic operations at the cost of unsafe spawning. Wakers used in this crate are thread-unsafe and not guarded by locks or atomics, so you must ensure that wakers are not shared between threads.

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License

MIT or Apache 2.0, at your option.

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.

Similar crates

The futures-executor crate's LocalPool is similar but rejects reentrant calls to run, etc. as it depends on thread-local states. The yash-executor crate allows creating and running multiple executors that work independently, so users can have more fine-grained control over how concurrent tasks are run.

The async-executor crate provides LocalExecutor which is a wrapper around the thread-safe Executor and depends on locks for synchronization. The yash-executor crate is lock-free at the cost of unsafe spawning.

The simple-async-local-executor crate is similar to yash-executor but also provides event signaling. Its implementation is free of locks and atomics but still safe because the Waker is a dummy and the Executor polls all futures even if not awakened.