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GATE | GATE-IT-2004 | Question 65
The semaphore variables full, empty and mutex are initialized to 0, n and 1, respectively. Process P1 repeatedly adds one item at a time to a buffer of size n, and process P2 repeatedly removes one item at a time from the same buffer using the programs given below. In the programs, K, L, M and N are unspecified statements.
P1
while (1) {
K;
P(mutex);
Add an item to the buffer;
V(mutex);
L;
}
P2
while (1) {
M;
P(mutex);
Remove an item from the buffer;
V(mutex);
N;
}
The statements K, L, M and N are respectively
(A)
P(full), V(empty), P(full), V(empty)
(B)
P(full), V(empty), P(empty), V(full)
(C)
P(empty), V(full), P(empty), V(full)
(D)
P(empty), V(full), P(full), V(empty)
Answer
Please comment below if you find anything wrong in the above post
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