Concurrency
Arc Mutex in Rust and the Pattern Behind Shared State
Arc gives several threads shared ownership and Mutex gives them one-at-a-time access. See the full pattern, the deadlock to avoid and what poisoning means.
9 min read
Tag
mutex
4 posts
Concurrency
Holding a Mutex Guard Across an Await in Rust and the Fix
A MutexGuard held across an await can make a task non-Send or deadlock a worker. See the compiler error, the deadlock it allows and three fixes.
8 min read
Concurrency
Tokio Mutex Versus Std Mutex and When Each Is Correct
Use std::sync::Mutex when the lock is never held across an await and tokio::sync::Mutex when it must be. The std one is faster and is the default choice.
8 min read
Concurrency
Sharing State in Tokio With Arc Mutex and Message Passing
Share state in async code with Arc<Mutex<T>>, with a state owning task and channels, or with read heavy structures. See the trade-offs and the failure modes.
7 min read