Consider that two processes, P1 and P2, are executing concurrently. Both the processes share a standard variable named "Counter", having an initial value = 5. Find the final value of Counter and update tables below:

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(a)
Consider that two processes, P1 and P2, are executing concurrently. Both the processes
share a standard variable named "Counter", having an initial value = 5. Find the final
value of Counter and update tables below:
Process P1 tries to increment the value of the counter.
Process P2 tries to decrement the value of the counter.
Update column Reg 1, Counter and Reg 2.
The execution order of the instructions may be P1, P1, P2, P2.
(Notes: Column P1 with value 1 is produce 1 slot and column P2 with value 1 is consume 1 slot)
Time
to
tl
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
P1
1
1
Reg 1
5
Counter
5
Reg 2
5
P2
1
1
Transcribed Image Text:(a) Consider that two processes, P1 and P2, are executing concurrently. Both the processes share a standard variable named "Counter", having an initial value = 5. Find the final value of Counter and update tables below: Process P1 tries to increment the value of the counter. Process P2 tries to decrement the value of the counter. Update column Reg 1, Counter and Reg 2. The execution order of the instructions may be P1, P1, P2, P2. (Notes: Column P1 with value 1 is produce 1 slot and column P2 with value 1 is consume 1 slot) Time to tl t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 P1 1 1 Reg 1 5 Counter 5 Reg 2 5 P2 1 1
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