Suppose processes p0 and p1 share variable V2, processes p1 and P2 share variable V0, and processes Pc. and p3 share variable V1. a. Show how the processes can use enableinterrupt () and disableinterrupt ( ) to coordinate access to V0, V1, and V2 so that the criti- cal section problem does not occur.
b. Show how the processes can use semaphores to coordinate access to V0, VI' and V2 so that the critical section problem docs not occur.