Question

What would happen if a 'WaitOne' request is called when the semaphore value is zero?

Answer 1

'WaitOne' request will block the thread until the semaphore becomes available.

Step-by-step explanation:

If a 'WaitOne' request is called when the semaphore value is zero, it means that the semaphore is not available. In this case, the 'WaitOne' request will block the thread until the semaphore becomes available, i.e., until the semaphore value is greater than zero.

Once the semaphore becomes available, the 'WaitOne' request will proceed and decrement the semaphore value by one. This allows other threads to also access the semaphore.

It's important to note that blocking a thread can lead to potential performance issues, so it's important to use semaphores carefully and ensure proper synchronization.