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Explain Busy Waiting Semaphores
Weak, Busy-wait Semaphores
a) The simplest way to implement semaphores.
b) Useful while critical sections last for a short time, or we comprise lots of CPUs.
c) S initialized to positive value (to permit someone in at the beginning).
d) S is an integer variable that, aside from initialization, can only be accessed by 2 atomic and mutually exclusive operations:
wait(s):
while (s.value != 0);
s.value--;
signal(s):
s.value++;
All happens atomically that is wrap pre and post protocols.
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Write an application that does the following:(1) fill an array with 50 random integers; (2) loop through the array, displaying each value, and count the number of negative values;
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summary of what operating system do
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