Question

Certain applications using counting semaphore operation in the given order 10P, 2P, 3V, 2V, 4P, 3V results in -5. In initial value of semaphore is ---------------------------​

Answer 1

Answer:

5P

Explanation:

Support my answer.........

Answer 2

The semaphore count initialized to the number of free resources. The initial value of the semaphore is $3$.

Explanation:

Let the initial value of the semaphore be: $x$

The given order be $10P, 2P, 3V, 2V, 4P, 3V$ where $P$ operation down counts for semaphore and $V$ operation up the count for the semaphore.

$x-10-2+3+2-4+3=-5\\x-8=-5\\x=-5+8\\x=3$

The initial value of the semaphore is $3$.