简单 任务调度 任务池

任务池

package com.task;/** * 任务类 * @author jiangl * */public interface ITask{public void execute();}


package com.task;import java.util.Iterator;import java.util.List;import java.util.Vector;import java.util.concurrent.ConcurrentLinkedQueue;/** * 执行器队列 * @author jiangl * */public class ExecuterQueue {private int size = -1;private String name = null;private boolean isdaemon;/** *  * @param size  执行器线程池大小 * @param isdaemon 执行器线程池中的线程是否为守护线程 * @param name     执行器线程池名字 */public ExecuterQueue(int size, boolean isdaemon, String name){this.size = size;this.name = name;this.isdaemon = isdaemon;init();}private void init(){for(int i=0; i<size; i++){Executer exe = new Executer(this);queue.add(exe);exe.setDaemon(isdaemon);exe.start();}}public String getExecuterQueueName(){return this.name;}private Vector<Executer> queue = new Vector<Executer>();private ConcurrentLinkedQueue<ITask> list = new ConcurrentLinkedQueue<ITask>();public synchronized ConcurrentLinkedQueue<ITask> getLastTask(){return list;}// 添加一项任务public synchronized void process(ITask task) throws InterruptedException {if (task != null) {if(queue.size() > 0){Executer exe = queue.remove(0);exe.setIsRunning(true);exe.process(task);}else{list.add(task);}}}// 完成任务后将它从任务队列中删除public synchronized void finishTask(Executer exe) {if (exe != null) {exe.setIsRunning(false);queue.add(exe);}}}


package com.task;import java.lang.Runnable;/** *  * @author jiangl * */public class Executer extends Thread {private ITask task;private ExecuterQueue target;private boolean running = false;public Executer(ExecuterQueue target) {this.target = target;}public void process(ITask task) {this.task = task;synchronized (this) {this.notify(); // 恢复线程}}public boolean getIsRunning() {return this.running;}public void setIsRunning(boolean boo) {this.running = boo;}@Overridepublic void run() {try {while (true) {if (task == null || !this.getIsRunning()) {synchronized (this) {try {//System.out.println("Executer.class wait()");this.wait();} catch (InterruptedException e) {e.printStackTrace();}}}task.execute();//执行if ((task = target.getLastTask().poll()) != null) {//System.out.println("get old task");continue;}target.finishTask(this);}} catch (Exception e) {e.printStackTrace();}}}


package com.task;import com.util.StringUtil;/** * 执行器线程池管理器 * @author jiangl * */public class ExecuterManager {private static ExecuterQueue queue = null;public ExecuterManager(){}/** *  * @param isdaemon 执行器内的执行器(线程)是否为守护线程 */public static void init(boolean isdaemon){queue = new ExecuterQueue(5, isdaemon, StringUtil.SYSTEM);}public static void process(ITask task){try {queue.process(task);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}

package com;import com.task.ITask;public class DemoTask implements ITask {private String msg;public DemoTask(String msg){this.msg = msg;}@Overridepublic void execute() {System.out.println(">>>("+msg+")>>>Thread:>>>" + Thread.currentThread().getName());}}


package com;import com.task.ExecuterManager;/** *  * @author jiangl * */public class TestTask {/** * @param args * @throws InterruptedException  */public static void main(String[] args) throws InterruptedException {ExecuterManager.init(false);DemoTask task = null;for (int i = 0; i < 3000000; i++) {task = new DemoTask("test" + i);ExecuterManager.process(task);}}}

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