Part III: Multi-Threading

Consider the following source code

program ThreadTest

total = 100

sub thread1 as thread

for i = 1 to 2

total = total - i

next

end sub

sub thread2 as thread

for i = 3 to 4

total = total + i

call thread1

next

end sub

call thread2

wait

writeln (Total =, total)

end

Compile the above source code and load it in the main memory. Create a single process, choose RR scheduling algorithm with time quantum of 3 ticks. Run the Process.

Answer the following questions:

1. What is the value of Total?
2. How many processes and how many threads are created?
3. Identify the name of the processes and threads.
4. What is the PID and PPID of the processes and threads created?
5. Represent the parent and child relationship using tree representation.