Computer Science · Operating Systems
Consider the proposed solution to the Dining Philosophers Problem using a binary semaphore 'lock' initialized to 1: Philosopher(int i) { while (1) { think(); wait(lock); // (i) wait(fork[i]); wait(fork[(i+1)%5]); signal(lock); // (ii) eat(); wait(lock); // (iii) signal(fork[i]); signal(fork[(i+1)%5]); signal(lock); // (iv) } } Which of the following statements is correct regarding statements (i), (ii), (iii), and (iv)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1All statements (i), (ii), (iii), and (iv) are necessary; removing any pair could cause deadlock or mutual exclusion issues.✓
- 2Removing (i), (ii), (iii), and (iv) will keep the code deadlock-free.
- 3Removing (iii) and (iv) will not affect the code safety.
- 4Removing (i) and (ii) will not affect the code safety.
Correct answer
All statements (i), (ii), (iii), and (iv) are necessary; removing any pair could cause deadlock or mutual exclusion issues.
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