rust-concurrency

Use Arc and Mutex to share state across multiple threads in Rust safely, ensuring thread-safe reference counting and mutual exclusion for concurrent read and write access.

Send allows a type to be transferred safely between threads, while Sync allows a type to be accessed concurrently by multiple threads. Both traits are enforced by the Rust compiler to guarantee thread safety.

Use RwLock instead of Mutex when your workload involves significantly more concurrent read operations than writes. RwLock permits multiple concurrent readers while ensuring exclusive write access, improving multi-threaded computation throughput.

Debug a deadlock in a Tokio async runtime by checking if you are holding locks across await points. Releasing locks before awaiting prevents deadlocks and resolves race conditions efficiently.

Your Rust code fails to compile because the shared variable likely does not implement the Send trait. Wrapping the data in Arc and Mutex enforces Send and Sync, allowing safe transfer and concurrent access across threads.

Yes, you can use async-std with Arc and Mutex for I/O-bound tasks. Selecting the right concurrency model with proper synchronization primitives ensures safe shared state management across your async runtime.