State transition diagram for reader writer problem

Question

I\'m not understanding my professor means when he says the write flag and read flag. Does 0 mean it is triggered? He wants us to draw a state transition diagram but I think

Answer 1

The write flag and the read flag are each a boolean value, meaning it can hold a 0 or a 1. The state appears to be defined by the value of the counter and the two flags. I think your professor is asking that you draw a state diagram that shows transitions between different counter/flag value combinations. (My guess is that the intent is that you collapse all the counter>0 sub-states into a single sub-state labeled counter=N.)