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public interface Consumer { void consume() throws InterruptedException; }
public interface Producer { void produce() throws InterruptedException; }
abstract class AbstractConsumer implements Consumer, Runnable { @Override public void run() { while (true) { try { consume(); } catch (InterruptedException e) { e.printStackTrace(); break; } } } }
abstract class AbstractProducer implements Producer, Runnable { @Override public void run() { while (true) { try { produce(); } catch (InterruptedException e) { e.printStackTrace(); break; } } } }
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public interface Model { Runnable newRunnableConsumer(); Runnable newRunnableProducer(); }
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public class Task { public int no; public Task(int no) { this.no = no; } }
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public class BlockingQueueModel implements Model { private final BlockingQueue<Task> queue; private final AtomicInteger increTaskNo = new AtomicInteger(0); public BlockingQueueModel(int cap) { // LinkedBlockingQueue µÄ¶ÓÁÐÊÇ lazy-init µÄ£¬µ« ArrayBlockingQueue ÔÚ´´½¨Ê±¾ÍÒѾ init this.queue = new LinkedBlockingQueue<>(cap); } @Override public Runnable newRunnableConsumer() { return new ConsumerImpl(); } @Override public Runnable newRunnableProducer() { return new ProducerImpl(); } private class ConsumerImpl extends AbstractConsumer implements Consumer, Runnable { @Override public void consume() throws InterruptedException { Task task = queue.take(); // ¹Ì¶¨Ê±¼ä·¶Î§µÄÏû·Ñ£¬Ä£ÄâÏà¶ÔÎȶ¨µÄ·þÎñÆ÷´¦Àí¹ý³Ì Thread.sleep(500 + (long) (Math.random() * 500)); System.out.println("consume: " + task.no); } } private class ProducerImpl extends AbstractProducer implements Producer, Runnable { @Override public void produce() throws InterruptedException { // ²»¶¨ÆÚÉú²ú£¬Ä£ÄâËæ»úµÄÓû§ÇëÇó Thread.sleep((long) (Math.random() * 1000)); Task task = new Task(increTaskNo.getAndIncrement()); queue.put(task); System.out.println("produce: " + task.no); } } public static void main(String[] args) { Model model = new BlockingQueueModel(3); for (int i = 0; i < 2; i++) { new Thread(model.newRunnableConsumer()).start(); } for (int i = 0; i < 5; i++) { new Thread(model.newRunnableProducer()).start(); } } }
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produce: 0 produce: 4 produce: 2 produce: 3 produce: 5 consume: 0 produce: 1 consume: 4 produce: 7 consume: 2 produce: 8 consume: 3 produce: 6 consume: 5 produce: 9 consume: 1 produce: 10 consume: 7
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