How to synchronize processes using semaphores initialized at 1?

Asked Jun 28 '20 at 12:22

Active Jun 28 '20 at 12:22

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I have a problem synchronizing processes using semaphores that are initialized at 1.

I have the following example: There are six processes. Process 1 can start any time. Process 2 must wait for process 1 to finish. Process 3 can start any time. Process 4 must wait for both process 2 and process 3 to finish. Process 5 must wait for process 4 to finish. Process 6 must wait for process 3 to finish.

The semaphores used, must be initialized at 1.

How can we avoid p2,p4,p5, and p6 executing first since all semaphores should be initialized at 1?

asked Jun 28 '20 at 12:22

ivan savvidis

All the processes are created at once and ran simultaneously, and only semaphores initialized to ``1`` should be used, nothing else? – m0hithreddy Jun 30 '20 at 05:54
You are right, there is nothing else. – ivan savvidis Jun 30 '20 at 06:56
Hi Ivan, did you find the solution for your problem? – ddfra Jul 10 '20 at 12:03

How to synchronize processes using semaphores initialized at 1?

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