Interesting. I wrote almost the same code for work a couple of weeks ago.
Not sore, but it looks like the Transition function has a race condition. It calls CanTansition() before acquiring the mutex lock. I think this could lead to illegal state transitions.
Not sore, but it looks like the Transition function has a race condition. It calls CanTansition() before acquiring the mutex lock. I think this could lead to illegal state transitions.