Thread Safety Error on ReadHandler about left-right HOT 3 CLOSED

Hi there! So, what you're running into is that evmap does not let you share a single ReadHandle. Instead, you need to keep one clone of the handle for each concurrent place you want to access the map from. In your case above, just add

let read_handler = read_handler.clone()

above the call to thread::spawn, and make the closure move ||. That should do it.

from left-right.

After cloning the read_handler like @jonhoo advised, I think the mutex can be wrapped with a thread-safe reference-counting pointer, i.e. Arc.

let write_lock = Arc::new(Mutex::new(write_handler));

And then inside the OK branch, cloning the reference to the lock with Arc will successfully pass into the closure.

let write_lock = Arc::clone(&write_lock);

After inserting the aforementioned changes, I successfully ran the script.

from left-right.

Yes, the write handle does not support concurrent operations in evmap, so you'd need to wrap it in a Mutex to share it :)

from left-right.