The domain and range for each process is given in the following table:
In addition, you are given the following precedence relation:
a. Construct the Precedence Graph (not containing any redundant or transitive edges)
b. Determine if the system above is always determinate. If it is not, add to necessary elements to make it determinate.
As a programmer, show how you can use semaphores to enforce these constraints (i.e., the precedence relation ).
Will the numbers that are read by the processes P1, P2, and P3 be always unique or do you observe duplicates of numbers being obtained by different processes (i,e, does a particular integer x appear in the output of more than on process)? What the final number in the file will be? Rewrite the above program so as to guarantee that no duplicate number are ever obtained by the processes. Briefly describe why the code sequence above can lead duplication of sequence numbers and discuss how your solution will avoid duplicates.
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