Question: 1. Concurrency and Deadlock (25 Marks) (a) Are the wait and signal operations on semaphores implemented as atomic operations? Briefly explain and illustrate your answer

1. Concurrency and Deadlock (25 Marks) (a) Are the wait and signal operations on semaphores implemented as atomic operations? Briefly explain and illustrate

1. Concurrency and Deadlock (25 Marks) (a) Are the wait and signal operations on semaphores implemented as atomic operations? Briefly explain and illustrate your answer (e.g. using pseudo code). [3 Marks] Consider the code below involving two threads PO and P1. (b) #include #include int turn = 0; int sum = 0; void * PO(void * a) { int i; for(i = 0; i

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