Java多线程 自定义线程池详情
更新时间：2021年10月28日 11:00:03 作者：冬日毛毛雨
这篇文章主要介绍了Java多线程 自定义线程池，文章主要是学习代码，没有过多解析,需要的朋友可以参考一下文章的具体内容
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<Runnable> 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<WorkerTask> 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<Runnable> 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<WorkerTask> 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<WorkerTask> 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！
相关文章
这篇文章主要介绍了Mybatis-Plus的使用详解,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧2020-10-10
SpringBoot AOP Redis实现延时双删功能实战
本文主要介绍了SpringBoot AOP Redis实现延时双删功能实战，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧2022-08-08
这篇文章主要介绍了Java协程编程Loom的方法，需要的朋友请看下文2021-08-08
JAVA的基本结构就是顺序结构，除非特别指明，否则就按照顺序一句一句执行顺序结构是最简单的算法结构，语句与语句之间，框与框之间是按从上到下的顺序进行的，它是由若干个依次执行的处理步骤组成的，它是任何一个算法都离不开的一种基本算法结构2021-10-10
这篇文章主要介绍了springboot自定义Starter的具体流程,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下2019-09-09
这篇文章主要介绍了Java 获取服务器环境的实例详解的相关资料,这里提供实例和输出结果，希望能帮助大家理解，需要的朋友可以参考下2017-07-07
下面小编就为大家带来一篇mybatis 插件: 打印 sql 及其执行时间实现方法。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧2017-06-06
数据库配置主从之后，如何在代码层面实现读写分离？所以下面这篇文章主要给大家介绍了关于spring boot配置读写分离的完整步骤，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友可以参考下2018-09-09
这篇文章主要介绍了Java中的RMI使用方法,RMI是Java提供的一个完善的简单易用的远程方法调用框架,采用客户服务器通信方式,在服务器上部署了提供各种服务的远程对象,下面我们来详细讲解2023-10-10
这篇文章主要介绍了Java中MessageDigest来实现数据加密的方法，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧2020-05-05
最新评论