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<=max

package 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;
    }

    @Override
    public 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:0
The 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:29
The 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:13
The 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:0
Closed.
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:0
Pool#Min:4,Active:8,Max:12,Current:8,QueueSize:0
Pool#Min:4,Active:8,Max:12,Current:8,QueueSize:0

到此这篇关于Java多线程 自定义线程池详情的文章就介绍到这了,更多相关Java多线程 自定义线程池内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!

你可能感兴趣的:(Java多线程 自定义线程池详情)