How do I debug async code in Rust?

How do I debug async code in Rust?

Debugging async code in Rust can be tricky due to its non-blocking nature. You can use tools like println! for logging, or the log crate for more structured logging. Additionally, using a debugger like gdb or lldb can help, but you need to ensure that your async tasks are properly awaited.

What are some common pitfalls when debugging async Rust?

Common pitfalls include forgetting to await futures, which can lead to unexpected behavior, and not handling errors properly in async functions. Also, be cautious with shared state across async tasks, as it can lead to data races.

Can I use the Rust standard library for async debugging?

Yes, the Rust standard library provides some tools for debugging, but for async code, you might find crates like tokio or async-std more helpful, as they offer additional debugging features tailored for async programming.

Are there any specific libraries for better async debugging?

Yes, libraries like tokio-console provide a way to visualize and debug async tasks in a more user-friendly manner. You can also use async-std's built-in tools for tracing and logging.