34 lines
1.0 KiB
Java
34 lines
1.0 KiB
Java
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//: concurrency/FixedDiningPhilosophers.java
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// Dining philosophers without deadlock.
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// {Args: 5 5 timeout}
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import java.util.concurrent.*;
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public class FixedDiningPhilosophers {
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public static void main(String[] args) throws Exception {
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int ponder = 5;
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if(args.length > 0)
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ponder = Integer.parseInt(args[0]);
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int size = 5;
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if(args.length > 1)
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size = Integer.parseInt(args[1]);
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ExecutorService exec = Executors.newCachedThreadPool();
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Chopstick[] sticks = new Chopstick[size];
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for(int i = 0; i < size; i++)
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sticks[i] = new Chopstick();
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for(int i = 0; i < size; i++)
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if(i < (size-1))
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exec.execute(new Philosopher(
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sticks[i], sticks[i+1], i, ponder));
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else
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exec.execute(new Philosopher(
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sticks[0], sticks[i], i, ponder));
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if(args.length == 3 && args[2].equals("timeout"))
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TimeUnit.SECONDS.sleep(5);
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else {
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System.out.println("Press 'Enter' to quit");
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System.in.read();
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}
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exec.shutdownNow();
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}
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} /* (Execute to see output) *///:~
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