From the course: Parallel and Concurrent Programming with Java 1
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Livelock: Java demo - Java Tutorial
From the course: Parallel and Concurrent Programming with Java 1
Livelock: Java demo
- [Instructor] To demonstrate a livelock in Java, I'll modify the dining philosophers example from earlier that I used to demonstrate a deadlock. Now, I have not implemented a strategy to prevent the deadlock in this version, so if I run this program, sure enough, after a few iterations, it hits a deadlock. The philosophers have acquired their first chopstick lock, and they're stuck waiting for their second one to become available. One possible way to fix this problem would be to have the philosophers release their lock on their first chopstick if their second chopstick is not available when they try to take it. That will give another philosopher a chance to take that first chopstick and hopefully prevent the deadlock. To implement that, instead of using the regular lock method, on the second chopstick, I'll use the TryLock method on it. And, I'll put that in an if statement that will execute if the lock was not taken. If that happens, I'll print a message that this philosopher…
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