Question

Manage Program Flow - Multithreading

You are implementing a state machine in a multithreaded class. You need to check what the current state is and change it to the new one on each step. Which method do you use?

	Volatile.Write(ref currentState)
	Interlocked.CompareExchange(ref currentState, ref newState, expectedState)
	Interlocked.Exchange(ref currentState, newState)
	Interlocked.Decrement(ref newState)