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3 At time 110 four processes (P1 – P4) are waiting for a timeout si

3 At time 110 four processes (P1 – P4) are waiting for a timeout si

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3. At time 110 four processes (P1 – P4) are waiting for a

timeout signal.

They are scheduled to wake up respectively at times: 130,

145, 175, 210.

(a) Using a priority queue with time differences show

the queue and

content of the countdown Timer at time 110.

Process queue

Time Difference

Timer

(b) P1 wakes up and immediately issues a call to

SetLTimer(tn, 50).

Show the priority queue after the call. (call takes no

time).

Process queue

Time Difference

Timer

(c) P2 wakes up and immediately issues a call to

SetLTimer(tn, 40).

Show the new priority queue after the call. (call

takes no time).

Process queue

Time Difference

Timer

(d) P3 wakes up and immediately issues a call to

SetLTimer(tn, 40).

Show the priority queue after the call. (call takes no

time).

Process queue

Time Difference

Timer

Process queue

Time Difference

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Solution

Process queue

1

3

3

4

2

Time Difference

12

14

12

15

20

Timer

Process queue

1

3

3

4

2

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3. At time 110 four processes (P1 – P4) are waiting for a timeout signal. They are scheduled to wake up respectively at times: 130, 145, 175, 210. (a) Using a priority queue with time differences show the queue and content of the countdown Timer at time 110. Process queue Time Difference Timer (b) P1 wakes up and immediately issues a call to SetLTimer(tn, 50). Show the priority queue after the call. (call takes no time). Process queue Time Difference Timer (c) P2 wakes up and immediately issues a call to SetLTimer(tn, 40). Show the new priority queue after the call. (call takes no time). Process queue Time Difference Timer (d) P3 wakes up and immediately issues a call to SetLTimer(tn, 40). Show the priority queue after the call. (call takes no time). Process queue Time Difference Timer Process queue Time Difference Solution Process queue 1 3 3 4 2 Time Difference 12 14 12 15 20 Time ...
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