Operating-Systems

Question 33

The concurrent programming constructs fork and join are as below:
fork which creates a new process executing from the specified label
join which decrements the specified synchronization variable (by 1) and terminates the process if the new value is not 0.
Show the precedence graph for S1, S2, S3, S4, and S5 of the concurrent program below.

   N = 2
   M = 2
   fork L3
   fork L4
   S1
L1:join N
   S3
L2:join M
   S5
L3:S2
   goto L1
L4:S4
   goto L2
next:

A	Theory Explanation.

Operating-SystemsProcess-SynchronizationGATE 1996

Correct Answer: A

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