3. (10 points) Consider the following pseudo-code routines to provide a solution to the critical section...

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3. (10 points) Consider the following pseudo-code routines to provide a solution to the critical section problem between two threads in a uniprocessor system. In addition to the two disadvantages of "busy waiting" and "good for only two threads", there is a major flaw in the routines. Explain this major flaw: Intially, turn = 0 entry (id) { while (turn !=id); /* if not my turn, spin */ exit (id) { } turn = 1 id; /* other thread's turn*/ Note, the id is the thread id (id == 0 or 1). 3. (10 points) Consider the following pseudo-code routines to provide a solution to the critical section problem between two threads in a uniprocessor system. In addition to the two disadvantages of "busy waiting" and "good for only two threads", there is a major flaw in the routines. Explain this major flaw: Intially, turn = 0 entry (id) { while (turn !=id); /* if not my turn, spin */ exit (id) { } turn = 1 id; /* other thread's turn*/ Note, the id is the thread id (id == 0 or 1).

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Answer The major flaw in the provided pseudocode routines is that the update of the turn variable is ... View the full answer