Answer the following in the context of semaphores.

[Points 3] Write a piece of code to implement a solution for critical section problem using semaphores (with wait and signal operations). (Hint: similar to Petersons solution but using semaphores)

[Points 3] What are the advantages (if any) of using the above solution with semaphores instead of the one proposed by Peterson.

228 Chapter 5 Process Synchronization monitor DiningPhilosophers enum (THINKING, HUNGRY, EATING) state C5]; condition self C5]; void pickup (int i) state [i] HUNGRY tests (i); if (state [i] EATING) self [i] wait(); void putdown (int i) state [i] THINKING test (i 4) 5) test (i 1) %5) void test (int i) if ((state [(i 4) 5] EATING) && (state [i] HUNGRY) && (state[(i 1) 5] EATING)) state [i] EATING self signal() initialization code for (int i 0; i 5; i++) state[i] THINKING Figure 5.18 A monitor solution to the dining-philosopher