Who Runs Your Rust Future? Hands-On Intro to Async Rust
2 days ago
- #Executor
- #Async Rust
- #Future
- Async Rust requires understanding three key components: Future, poll, and Waker.
- Unlike JavaScript, Rust ships without an event loop; you must bring or build one.
- Future is a lazy placeholder representing incomplete work, and poll drives its progress.
- Pin ensures memory stability for self-referential futures to prevent dangling pointers.
- Waker signals when a Future can make progress, allowing efficient polling.
- Oneshot channels demonstrate async coordination, using shared memory and synchronization.
- block_on serves as a simple executor, blocking until a Future completes.