Simple library for keyed asynchronous reader-writer locks.
use key_rwlock::KeyRwLock;
#[tokio::main]
async fn main() {
let lock = KeyRwLock::new();
let _foo = lock.write("foo").await;
let _bar = lock.read("bar").await;
assert!(lock.try_read("foo").await.is_err());
assert!(lock.try_write("foo").await.is_err());
assert!(lock.try_read("bar").await.is_ok());
assert!(lock.try_write("bar").await.is_err());
}