Java多线程|Java多线程自定义线程池详情 Java多线程自定义线程池详情

主要介绍：

1.任务队列
2.拒绝策略（抛出异常、直接丢弃、阻塞、临时队列）
3.init( min )
4.active
5.max

min<=active<=maxpackage chapter13; import java.util.ArrayList; import java.util.LinkedList; import java.util.List; public class SimpleThreadPool {public final static DiscardPolicy DEFAULT_DISCARD_POLICY = () -> {throw new DiscardException("Discard This Task."); }; private final static int DEFAULT_SIZE = 10; //设置线程任务最大值private final static int DEFAULT_TASK_QUEUE_SIZE = 2000; private final static LinkedList TASK_QUEUE = new LinkedList<>(); private final static String THREAD_PREFIX = "SIMPLE_THREAD_POOL-"; private final static ThreadGroup GROUP = new ThreadGroup("Pool_Group"); private final static List THREAD_QUEUE = new ArrayList<>(); private static volatile int seq = 0; private final int size; //队列大小private final int queueSize; private final DiscardPolicy discardPolicy; private volatile boolean destroy = false; public SimpleThreadPool() {this(DEFAULT_SIZE, DEFAULT_TASK_QUEUE_SIZE, DEFAULT_DISCARD_POLICY); }public SimpleThreadPool(int size, int queueSize, DiscardPolicy discardPolicy) {this.size = size; this.queueSize = queueSize; this.discardPolicy = discardPolicy; init(); } private void init() {for (int i = 0; i < size; i++) {createWorkTask(); }}public void submit(Runnable runnable) {if(destroy) throw new IllegalStateException("The thread pool already destroy and not allow submit task."); synchronized (TASK_QUEUE) {if (TASK_QUEUE.size() > queueSize) discardPolicy.discard(); TASK_QUEUE.addLast(runnable); TASK_QUEUE.notifyAll(); }}private void createWorkTask() {WorkerTask task = new WorkerTask(GROUP, THREAD_PREFIX + (seq++)); task.start(); THREAD_QUEUE.add(task); }public void shutdown() throws InterruptedException {while (!TASK_QUEUE.isEmpty()) {Thread.sleep(50); }int initVal = THREAD_QUEUE.size(); while (initVal > 0) {for (WorkerTask task : THREAD_QUEUE) {if (task.getTaskState() == TaskState.BLOCKED) {task.interrupt(); task.close(); initVal--; } else {Thread.sleep(10); }}}this.destroy = true; System.out.println("The thread pool disposed."); }public int getSize() {return size; }public int getQueueSize() {return queueSize; }public boolean destory() {return this.destroy; }private enum TaskState {FREE, RUNNING, BLOCKED, DEAD}public interface DiscardPolicy {void discard() throws DiscardException; }public static class DiscardException extends RuntimeException {public DiscardException(String message) {super(message); }}private static class WorkerTask extends Thread {private volatile TaskState taskState = TaskState.FREE; public WorkerTask(ThreadGroup group, String name) {super(group, name); }public TaskState getTaskState() {return this.taskState; }public void run() {OUTER:while (this.taskState != TaskState.DEAD) {Runnable runnable; synchronized (TASK_QUEUE) {while (TASK_QUEUE.isEmpty()) {try {taskState = TaskState.BLOCKED; TASK_QUEUE.wait(); } catch (InterruptedException e) {break OUTER; }}runnable = TASK_QUEUE.removeFirst(); }if (runnable != null) {taskState = TaskState.RUNNING; runnable.run(); taskState = TaskState.FREE; }}}public void close() {this.taskState = TaskState.DEAD; }} public static void main(String[] args) throws InterruptedException {SimpleThreadPool threadPool = new SimpleThreadPool(); for (int i = 0; i < 40; i++) {int finalI = i; threadPool.submit(() -> {System.out.println("The runnable " + finalI + " be serviced by " + Thread.currentThread() + " start."); try {Thread.sleep(3000); } catch (InterruptedException e) {e.printStackTrace(); }System.out.println("The runnable " + finalI + " be serviced by " + Thread.currentThread() + " finished."); }); System.out.println("======================"); }Thread.sleep(4000); threadPool.shutdown(); threadPool.submit(()->System.out.println("=============")); }}

============================================The runnable 0 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] start.======================The runnable 2 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] start.The runnable 1 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] start.The runnable 3 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] start.==================================================================The runnable 5 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] start.The runnable 6 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] start.============================================The runnable 7 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] start.The runnable 4 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] start.The runnable 8 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] start.========================================================================================The runnable 9 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] start.========================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================The runnable 7 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] finished.The runnable 10 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] start.The runnable 6 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] finished.The runnable 11 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] start.The runnable 3 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] finished.The runnable 12 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] start.The runnable 5 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] finished.The runnable 0 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] finished.The runnable 14 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] start.The runnable 2 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] finished.The runnable 15 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] start.The runnable 8 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] finished.The runnable 16 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] start.The runnable 4 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] finished.The runnable 17 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] start.The runnable 9 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] finished.The runnable 1 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] finished.The runnable 19 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] start.The runnable 18 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] start.The runnable 13 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] start.The runnable 10 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] finished.The runnable 14 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] finished.The runnable 11 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] finished.The runnable 22 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] start.The runnable 12 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] finished.The runnable 21 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] start.The runnable 20 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] start.The runnable 23 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] start.The runnable 15 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] finished.The runnable 24 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] start.The runnable 17 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] finished.The runnable 18 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] finished.The runnable 25 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] start.The runnable 13 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] finished.The runnable 16 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] finished.The runnable 19 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] finished.The runnable 28 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] start.The runnable 27 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] start.The runnable 26 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] start.The runnable 29 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] start.The runnable 22 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] finished.The runnable 30 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] start.The runnable 20 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] finished.The runnable 31 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] start.The runnable 23 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] finished.The runnable 21 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] finished.The runnable 32 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] start.The runnable 33 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] start.The runnable 24 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] finished.The runnable 34 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] start.The runnable 25 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] finished.The runnable 29 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] finished.The runnable 27 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] finished.The runnable 35 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] start.The runnable 26 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] finished.The runnable 28 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] finished.The runnable 39 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] start.The runnable 38 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] start.The runnable 37 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] start.The runnable 36 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] start.The runnable 33 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] finished.The runnable 32 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] finished.The runnable 31 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] finished.The runnable 30 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] finished.The runnable 39 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] finished.The runnable 34 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] finished.The runnable 38 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] finished.The runnable 36 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] finished.The runnable 37 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] finished.The runnable 35 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] finished.The thread pool disposed.Exception in thread "main" java.lang.IllegalStateException: The thread pool already destroy and not allow submit task.at chapter13.SimpleThreadPool.submit(SimpleThreadPool.java:48)at chapter13.SimpleThreadPool.main(SimpleThreadPool.java:176)

线程池本身就是一个线程：

import java.util.ArrayList; import java.util.Iterator; import java.util.LinkedList; import java.util.List; public class SimpleThreadPool extends Thread {public final static DiscardPolicy DEFAULT_DISCARD_POLICY = () -> {throw new DiscardException("Discard This Task."); }; //设置线程任务最大值private final static int DEFAULT_TASK_QUEUE_SIZE = 2000; /*** 任务队列*/private final static LinkedList TASK_QUEUE = new LinkedList<>(); private final static String THREAD_PREFIX = "SIMPLE_THREAD_POOL-"; /*** 线程组*/private final static ThreadGroup GROUP = new ThreadGroup("Pool_Group"); private final static List THREAD_QUEUE = new ArrayList<>(); private static volatile int seq = 0; //队列大小private final int queueSize; private final DiscardPolicy discardPolicy; private int size; private volatile boolean destroy = false; /*** 最小线程数*/private int min; /*** 最大线程数*/private int max; /*** 线程活跃数*/private int active; public SimpleThreadPool() {this(4, 8, 12, DEFAULT_TASK_QUEUE_SIZE, DEFAULT_DISCARD_POLICY); }public SimpleThreadPool(int min, int active, int max, int queueSize, DiscardPolicy discardPolicy) {this.min = min; this.active = active; this.max = max; this.queueSize = queueSize; this.discardPolicy = discardPolicy; init(); }private void init() {for (int i = 0; i < this.min; i++) {createWorkTask(); }/*** 默认线程大小为最小线程数*/this.size = min; this.start(); }public void submit(Runnable runnable) {if (destroy) throw new IllegalStateException("The thread pool already destroy and not allow submit task."); synchronized (TASK_QUEUE) {if (TASK_QUEUE.size() > queueSize) discardPolicy.discard(); TASK_QUEUE.addLast(runnable); TASK_QUEUE.notifyAll(); }}private void createWorkTask() {WorkerTask task = new WorkerTask(GROUP, THREAD_PREFIX + (seq++)); task.start(); THREAD_QUEUE.add(task); }public void shutdown() throws InterruptedException {while (!TASK_QUEUE.isEmpty()) {Thread.sleep(50); }//加锁对线程进行操作唯一synchronized (THREAD_QUEUE) {int initVal = THREAD_QUEUE.size(); while (initVal > 0) {for (WorkerTask task : THREAD_QUEUE) {if (task.getTaskState() == TaskState.BLOCKED) {task.interrupt(); task.close(); initVal--; } else {Thread.sleep(10); }}}}this.destroy = true; System.out.println("The thread pool disposed."); }public int getSize() {return size; }public int getQueueSize() {return queueSize; }public boolean isDestory() {return this.destroy; }public int getMin() {return min; }public int getMax() {return max; }public int getActive() {return active; }@Overridepublic void run() {while (!destroy) {System.out.printf("Pool#Min:%d,Active:%d,Max:%d,Current:%d,QueueSize:%d\n",this.min, this.active, this.max, this.size, TASK_QUEUE.size()); try {Thread.sleep(5_000L); //让线程池以最大活跃数运行if (TASK_QUEUE.size() > active && size < active) {for (int i = size; i < active; i++) {createWorkTask(); }System.out.println("The pool incremented to active."); size = active; //让线程池以最大线程数运行} else if (TASK_QUEUE.size() > max && size < max) {for (int i = size; i < max; i++) {createWorkTask(); }System.out.println("The pool incremented to max."); //让size以最大活跃数运行size = max; }/*** 释放线程* 加锁防止submit的时候有其他的操作*/synchronized (TASK_QUEUE) {if (TASK_QUEUE.isEmpty() && size > active) {System.out.println("==========Reduce========="); int releaseSize = size - active; for (Iterator it = THREAD_QUEUE.iterator(); it.hasNext(); ) {if (releaseSize <= 0) {break; }WorkerTask task = it.next(); task.close(); task.interrupt(); it.remove(); releaseSize--; }size = active; }}} catch (InterruptedException e) {e.printStackTrace(); }}}private enum TaskState {FREE, RUNNING, BLOCKED, DEAD}public interface DiscardPolicy {void discard() throws DiscardException; }public static class DiscardException extends RuntimeException {public DiscardException(String message) {super(message); }}private static class WorkerTask extends Thread {private volatile TaskState taskState = TaskState.FREE; public WorkerTask(ThreadGroup group, String name) {super(group, name); }public TaskState getTaskState() {return this.taskState; }public void run() {OUTER:while (this.taskState != TaskState.DEAD) {Runnable runnable; synchronized (TASK_QUEUE) {while (TASK_QUEUE.isEmpty()) {try {taskState = TaskState.BLOCKED; TASK_QUEUE.wait(); } catch (InterruptedException e) {System.out.println("Closed."); break OUTER; }}runnable = TASK_QUEUE.removeFirst(); }if (runnable != null) {taskState = TaskState.RUNNING; runnable.run(); taskState = TaskState.FREE; }}}public void close() {this.taskState = TaskState.DEAD; }}public static void main(String[] args) throws InterruptedException {SimpleThreadPool threadPool = new SimpleThreadPool(); for (int i = 0; i < 40; i++) {int finalI = i; threadPool.submit(() -> {System.out.println("The runnable " + finalI + " be serviced by " + Thread.currentThread() + " start."); try {Thread.sleep(3000); } catch (InterruptedException e) {e.printStackTrace(); }System.out.println("The runnable " + finalI + " be serviced by " + Thread.currentThread() + " finished."); }); //System.out.println("======================"); }//Thread.sleep(4000); //threadPool.shutdown(); //threadPool.submit(() -> System.out.println("=============")); }}

Pool#Min:4,Active:8,Max:12,Current:4,QueueSize:0The runnable 2 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] start.The runnable 3 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] start.The runnable 1 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] start.The runnable 0 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] start.The runnable 3 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] finished.The runnable 4 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] start.The runnable 1 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] finished.The runnable 5 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] start.The runnable 2 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] finished.The runnable 6 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] start.The runnable 0 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] finished.The runnable 7 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] start.The runnable 8 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] start.The runnable 9 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] start.The pool incremented to active.The runnable 10 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] start.Pool#Min:4,Active:8,Max:12,Current:8,QueueSize:29The runnable 11 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] start.The runnable 4 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] finished.The runnable 12 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] start.The runnable 7 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] finished.The runnable 13 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] start.The runnable 5 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] finished.The runnable 6 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] finished.The runnable 14 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] start.The runnable 15 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] start.The runnable 9 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] finished.The runnable 16 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] start.The runnable 8 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] finished.The runnable 10 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] finished.The runnable 18 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] start.The runnable 17 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] start.The runnable 11 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] finished.The runnable 19 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] start.The runnable 14 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] finished.The runnable 20 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] start.The runnable 15 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] finished.The runnable 13 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] finished.The runnable 22 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] start.The runnable 12 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] finished.The runnable 21 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] start.The runnable 23 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] start.The runnable 24 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] start.The runnable 25 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] start.The runnable 26 be serviced by Thread[SIMPLE_THREAD_POOL-10,5,Pool_Group] start.The pool incremented to max.Pool#Min:4,Active:8,Max:12,Current:12,QueueSize:13The runnable 27 be serviced by Thread[SIMPLE_THREAD_POOL-11,5,Pool_Group] start.The runnable 18 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] finished.The runnable 19 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] finished.The runnable 29 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] start.The runnable 16 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] finished.The runnable 30 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] start.The runnable 17 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] finished.The runnable 31 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] start.The runnable 28 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] start.The runnable 20 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] finished.The runnable 32 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] start.The runnable 23 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] finished.The runnable 33 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] start.The runnable 21 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] finished.The runnable 22 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] finished.The runnable 34 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] start.The runnable 35 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] start.The runnable 24 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] finished.The runnable 25 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] finished.The runnable 36 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] start.The runnable 26 be serviced by Thread[SIMPLE_THREAD_POOL-10,5,Pool_Group] finished.The runnable 37 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] start.The runnable 38 be serviced by Thread[SIMPLE_THREAD_POOL-10,5,Pool_Group] start.The runnable 27 be serviced by Thread[SIMPLE_THREAD_POOL-11,5,Pool_Group] finished.The runnable 39 be serviced by Thread[SIMPLE_THREAD_POOL-11,5,Pool_Group] start.The runnable 29 be serviced by Thread[SIMPLE_THREAD_POOL-7,5,Pool_Group] finished.The runnable 31 be serviced by Thread[SIMPLE_THREAD_POOL-4,5,Pool_Group] finished.The runnable 30 be serviced by Thread[SIMPLE_THREAD_POOL-5,5,Pool_Group] finished.The runnable 28 be serviced by Thread[SIMPLE_THREAD_POOL-6,5,Pool_Group] finished.==========Reduce=========The runnable 35 be serviced by Thread[SIMPLE_THREAD_POOL-3,5,Pool_Group] finished.The runnable 32 be serviced by Thread[SIMPLE_THREAD_POOL-2,5,Pool_Group] finished.The runnable 33 be serviced by Thread[SIMPLE_THREAD_POOL-0,5,Pool_Group] finished.The runnable 34 be serviced by Thread[SIMPLE_THREAD_POOL-1,5,Pool_Group] finished.Closed.Pool#Min:4,Active:8,Max:12,Current:8,QueueSize:0Closed.Closed.Closed.The runnable 38 be serviced by Thread[SIMPLE_THREAD_POOL-10,5,Pool_Group] finished.The runnable 36 be serviced by Thread[SIMPLE_THREAD_POOL-8,5,Pool_Group] finished.The runnable 37 be serviced by Thread[SIMPLE_THREAD_POOL-9,5,Pool_Group] finished.The runnable 39 be serviced by Thread[SIMPLE_THREAD_POOL-11,5,Pool_Group] finished.Pool#Min:4,Active:8,Max:12,Current:8,QueueSize:0Pool#Min:4,Active:8,Max:12,Current:8,QueueSize:0Pool#Min:4,Active:8,Max:12,Current:8,QueueSize:0

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