模式8–WorkerThread

來至《java多線程設計模式》

類似ThreadPool，預先產生幾個worker線程準備工作。

  public void startWorkers() {        for (int i = 0; i < threadPool.length; i++) {            threadPool[i].start();        }    }

package Sample;public class WorkerThread extends Thread {    private final Channel channel;    public WorkerThread(String name, Channel channel) {        super(name);        this.channel = channel;    }    public void run() {        while (true) {            Request request = channel.takeRequest();            request.execute();        }    }}

public synchronized void putRequest(Request request) {        while (count >= requestQueue.length) {            try {                wait();            } catch (InterruptedException e) {            }        }        requestQueue[tail] = request;        tail = (tail + 1) % requestQueue.length;        count++;        notifyAll();    }    public synchronized Request takeRequest() {        while (count <= 0) {            try {                wait();            } catch (InterruptedException e) {            }        }        Request request = requestQueue[head];        head = (head + 1) % requestQueue.length;        count--;        notifyAll();        return request;    }