I created this function. It should wait to finish before running again. This is working. I used the Condvar docs to write this code, but I don’t quite understand why the lock isn’t blocking.

When executing the run first the lock is locked and only unlocked when the task is done. When I call run while it is already running why can I lock the Mutex again.

pub fn run(&self) {
        let (lock, cvar) = &self.running;
        let mut running = lock.lock().unwrap();

        while *running {
            running = cvar.wait(running).unwrap();
        }

        *running = true;
        // Logic that can only run once at the same time
        ...
        *running = false;
        cvar.notify_all();
    }