一、标准用法

1 常用API

方法名称 描述
void lock() 获取锁，调用该方法当前线程将会获取锁，当锁获得后，从该方法返回
void lockInterruptibly() throws InterruptedException 可中断地获取锁，和 lock0 方法的不同之处在于该方法会响应中断，即在锁的获取中可以中断当前线程
boolean tryLock() 尝试非阻塞的获取锁，调用该方法后立刻返回，如果能够获取则返回 tnue，否则返回 false
boolean tryLock(long) time. Time Unit unit) throws InterruptedException 超时的获取锁，当前线程在以下3 种情况下会返回：当前线程在超时时间内获得了锁;当前线程在超时时间内被中断;超时时间结束，返回 false
void unlock() 释放锁 
package com.sonny.classexercise.concurrent.lock;import lombok.extern.slf4j.Slf4j;import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;/*** @author Xionghaijun* @date 2022/11/9 22:53*/
@Slf4j
public class ConditionTest {public static void main(String[] args) {Lock lock = new ReentrantLock();Condition condition = lock.newCondition();new Thread(() -> {lock.lock();try {log.debug(Thread.currentThread().getName() + " 开始处理任务");//会释放当前持有的锁，然后阻塞当前线程condition.await();log.debug(Thread.currentThread().getName() + " 结束处理任务");} catch (InterruptedException e) {e.printStackTrace();} finally {lock.unlock();}}).start();new Thread(() -> {lock.lock();try {log.debug(Thread.currentThread().getName() + " 开始处理任务");Thread.sleep(2000);//唤醒因调用Condition#await方法而阻塞的线程condition.signal();log.debug(Thread.currentThread().getName() + " 结束处理任务");} catch (Exception e) {e.printStackTrace();} finally {lock.unlock();}}).start();}}----------------
20:44:48.110 [Thread-0] DEBUG com.sonny.classexercise.concurrent.lock.ConditionTest - Thread-0 开始处理任务
20:44:48.117 [Thread-1] DEBUG com.sonny.classexercise.concurrent.lock.ConditionTest - Thread-1 开始处理任务
20:44:50.121 [Thread-1] DEBUG com.sonny.classexercise.concurrent.lock.ConditionTest - Thread-1 结束处理任务
20:44:50.121 [Thread-0] DEBUG com.sonny.classexercise.concurrent.lock.ConditionTest - Thread-0 结束处理任务

2 ReentrantLock详解

ReentrantLock是一种基于AQS框架的应用实现，是JDK中的一种线程并发访问的同步手 段，它的功能类似于synchronized是一种互斥锁，可以保证线程安全。

相对于 synchronized， ReentrantLock具备如下特点：

  • 可中断
  • 可设置超时时间
  • 可以设置为公平锁
  • 支持多个条件变量
  • 与 Synchronized 一样，都支持可在重入（被锁代码块中再次加锁）

Synchronized与ReentrantLock区别：

  • Synchronized是JVM层次的锁实现，ReentrantLockshiJDK层次的锁实现；
  • Synchronized的锁状态无法在代码中直接判断，ReentrantLock可通过 isLocked() 方法判断；
  • Synchronized是非公平锁，ReentrantLock可设置公平非公平；
  • Synchronized是不可被中断的，而ReentrantLock#lockInterruptiibly方法是可以被中断的；
  • 在发生异常时Synchronized会自动释放锁，而ReentrantLock需要在Finally块中显示释放锁；
  • ReentrantLock获取锁的形式有多种：如立即返回是否成功，或等待指定时长的获取，更加灵活；
  • Synchronized在特定情况下对于已经在等待的线程是后来的线程先获取锁，而ReentrantLock对于应经在等待的线程是先来的线程先获取锁。

可重入

package com.sonny.classexercise.concurrent.lock;import lombok.extern.slf4j.Slf4j;import java.util.concurrent.locks.ReentrantLock;/*** @author Xionghaijun* @date 2022/11/9 22:50*/
@Slf4j
public class ReentrantLockDemo2 {public static ReentrantLock lock = new ReentrantLock();public static void main(String[] args) {method1();}public static void method1() {lock.lock();try {log.debug("execute method1");method2();} finally {lock.unlock();}}public static void method2() {lock.lock();try {log.debug("execute method2");method3();} finally {lock.unlock();}}public static void method3() {lock.lock();try {log.debug("execute method3");} finally {lock.unlock();}}}------------
21:15:52.165 [main] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo2 - execute method1
21:15:52.192 [main] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo2 - execute method2
21:15:52.193 [main] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo2 - execute method3

可中断

package com.sonny.classexercise.concurrent.lock;import lombok.extern.slf4j.Slf4j;import java.util.concurrent.locks.ReentrantLock;/*** @author Xionghaijun* @date 2022/11/9 22:51*/
@Slf4j
public class ReentrantLockDemo3 {public static void main(String[] args) throws InterruptedException {ReentrantLock lock = new ReentrantLock();Thread t1 = new Thread(() -> {log.debug("t1启动...");try {lock.lockInterruptibly();try {log.debug("t1获得了锁");} finally {lock.unlock();}} catch (InterruptedException e) {e.printStackTrace();log.debug("t1等锁的过程中被中断");}}, "t1");lock.lock();try {log.debug("main线程获得了锁");t1.start();//先让线程t1执行Thread.sleep(1000);t1.interrupt();log.debug("线程t1执行中断");} finally {lock.unlock();}}}-----------------
21:18:38.880 [main] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo3 - main线程获得了锁
21:18:38.887 [t1] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo3 - t1启动...
21:18:39.890 [main] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo3 - 线程t1执行中断
21:18:39.892 [t1] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo3 - t1等锁的过程中被中断
java.lang.InterruptedExceptionat java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireInterruptibly(AbstractQueuedSynchronizer.java:898)at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireInterruptibly(AbstractQueuedSynchronizer.java:1222)at java.util.concurrent.locks.ReentrantLock.lockInterruptibly(ReentrantLock.java:335)at com.sonny.classexercise.concurrent.lock.ReentrantLockDemo3.lambda$main$0(ReentrantLockDemo3.java:22)at java.lang.Thread.run(Thread.java:748)

锁超时

package com.sonny.classexercise.concurrent.lock;import lombok.extern.slf4j.Slf4j;import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.ReentrantLock;/*** 锁超时，立刻失败** @author Xionghaijun* @date 2022/11/9 22:51*/
@Slf4j
public class ReentrantLockDemo4 {public static void main(String[] args) throws InterruptedException {ReentrantLock lock = new ReentrantLock();Thread t1 = new Thread(() -> {log.debug("t1启动...");// 注意： 即使是设置的公平锁，此方法也会立即返回获取锁成功或失败，公平策略不生效
//            if (!lock.tryLock()) {//                log.debug("t1获取锁失败，立即返回false");
//                return;
//            }//超时try {if (!lock.tryLock(1, TimeUnit.SECONDS)) {log.debug("等待 1s 后获取锁失败，返回");return;}} catch (InterruptedException e) {e.printStackTrace();return;}try {log.debug("t1获得了锁");} finally {lock.unlock();}}, "t1");lock.lock();try {log.debug("main线程获得了锁");t1.start();//先让线程t1执行Thread.sleep(2000);} finally {lock.unlock();}}
}------------
21:26:04.418 [main] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo4 - main线程获得了锁
21:26:04.424 [t1] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo4 - t1启动...
21:26:05.431 [t1] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo4 - 等待 1s 后获取锁失败，返回

公平锁、非公平锁

package com.sonny.classexercise.concurrent.lock;import lombok.extern.slf4j.Slf4j;import java.util.concurrent.locks.ReentrantLock;/*** 公平锁** @author Xionghaijun* @date 2022/11/9 22:52*/
@Slf4j
public class ReentrantLockDemo5 {public static void main(String[] args) throws InterruptedException {//ReentrantLock lock = new ReentrantLock(true); //公平锁ReentrantLock lock = new ReentrantLock(); //非公平锁for (int i = 0; i < 100; i++) {new Thread(() -> {lock.lock();try {try {Thread.sleep(10);} catch (InterruptedException e) {e.printStackTrace();}log.debug(Thread.currentThread().getName() + " running...");} finally {lock.unlock();}}, "t" + i).start();}// 1s 之后去争抢锁Thread.sleep(1000);for (int i = 0; i < 100; i++) {new Thread(() -> {lock.lock();try {log.debug(Thread.currentThread().getName() + " running...");} finally {lock.unlock();}}, "强行插入" + i).start();}}
}---------
公平锁
21:36:25.161 [t0] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t0 running...
21:36:25.177 [t1] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t1 running...
21:36:25.188 [t2] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t2 running...
21:36:25.199 [t3] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t3 running...
21:36:25.211 [t4] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t4 running...
21:36:25.224 [t5] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t5 running...
21:36:25.235 [t6] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t6 running...
21:36:25.245 [t7] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t7 running...
21:36:25.257 [t8] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t8 running...
21:36:25.268 [t9] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t9 running...
21:36:25.284 [t10] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t10 running...
21:36:25.302 [t11] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t11 running...
21:36:25.318 [t12] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t12 running...
21:36:25.330 [t13] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t13 running...
21:36:25.346 [t14] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t14 running...
21:36:25.360 [t15] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t15 running...
21:36:25.372 [t16] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t16 running...
21:36:25.384 [t17] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t17 running...
21:36:25.398 [t18] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t18 running...
21:36:25.410 [t19] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t19 running...
21:36:25.423 [t20] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t20 running...
21:36:25.434 [t21] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t21 running...
21:36:25.445 [t22] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t22 running...
21:36:25.456 [t23] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t23 running...
21:36:25.467 [t24] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t24 running...
21:36:25.479 [t25] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t25 running...
21:36:25.490 [t26] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t26 running...
21:36:25.509 [t27] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t27 running...
21:36:25.521 [t28] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t28 running...
21:36:25.545 [t29] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t29 running...
21:36:25.571 [t30] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t30 running...
21:36:25.592 [t31] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t31 running...
21:36:25.608 [t32] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t32 running...
21:36:25.619 [t33] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t33 running...
21:36:25.630 [t34] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t34 running...
21:36:25.642 [t35] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t35 running...
21:36:25.653 [t36] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t36 running...
21:36:25.664 [t37] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t37 running...
21:36:25.676 [t38] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t38 running...
21:36:25.687 [t39] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t39 running...
21:36:25.698 [t40] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t40 running...
21:36:25.709 [t41] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t41 running...
21:36:25.726 [t42] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t42 running...
21:36:25.738 [t43] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t43 running...
21:36:25.750 [t44] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t44 running...
21:36:25.762 [t45] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t45 running...
21:36:25.775 [t46] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t46 running...
21:36:25.788 [t47] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t47 running...
21:36:25.801 [t48] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t48 running...
21:36:25.812 [t49] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t49 running...
21:36:25.824 [t50] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t50 running...
21:36:25.835 [t51] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t51 running...
21:36:25.846 [t52] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t52 running...
21:36:25.856 [t53] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t53 running...
21:36:25.867 [t54] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t54 running...
21:36:25.879 [t55] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t55 running...
21:36:25.890 [t56] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t56 running...
21:36:25.901 [t57] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t57 running...
21:36:25.912 [t58] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t58 running...
21:36:25.923 [t59] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t59 running...
21:36:25.934 [t60] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t60 running...
21:36:25.947 [t61] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t61 running...
21:36:25.958 [t62] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t62 running...
21:36:25.969 [t63] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t63 running...
21:36:25.980 [t64] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t64 running...
21:36:25.991 [t65] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t65 running...
21:36:26.004 [t66] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t66 running...
21:36:26.022 [t67] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t67 running...
21:36:26.042 [t68] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t68 running...
21:36:26.056 [t69] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t69 running...
21:36:26.069 [t70] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t70 running...
21:36:26.080 [t71] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t71 running...
21:36:26.093 [t72] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t72 running...
21:36:26.106 [t73] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t73 running...
21:36:26.117 [t74] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t74 running...
21:36:26.128 [t75] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t75 running...
21:36:26.140 [t76] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t76 running...
21:36:26.150 [t77] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t77 running...
21:36:26.162 [t78] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t78 running...
21:36:26.174 [t79] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t79 running...
21:36:26.185 [t80] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t80 running...
21:36:26.200 [t81] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t81 running...
21:36:26.211 [t82] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t82 running...
21:36:26.223 [t83] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t83 running...
21:36:26.234 [t84] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t84 running...
21:36:26.248 [t85] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t85 running...
21:36:26.261 [t86] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t86 running...
21:36:26.274 [t87] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t87 running...
21:36:26.292 [t88] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t88 running...
21:36:26.309 [t89] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t89 running...
21:36:26.322 [t90] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t90 running...
21:36:26.381 [t91] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t91 running...
21:36:26.393 [t92] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t92 running...
21:36:26.404 [t93] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t93 running...
21:36:26.414 [t94] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t94 running...
21:36:26.424 [t95] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t95 running...
21:36:26.435 [t96] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t96 running...
21:36:26.446 [t97] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t97 running...
21:36:26.458 [t98] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t98 running...
21:36:26.469 [t99] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t99 running...
21:36:26.470 [强行插入0] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入0 running...
21:36:26.470 [强行插入1] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入1 running...
21:36:26.471 [强行插入2] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入2 running...
21:36:26.471 [强行插入3] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入3 running...
21:36:26.472 [强行插入4] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入4 running...
21:36:26.472 [强行插入5] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入5 running...
21:36:26.472 [强行插入6] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入6 running...
21:36:26.472 [强行插入7] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入7 running...
21:36:26.472 [强行插入8] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入8 running...
21:36:26.473 [强行插入9] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入9 running...
21:36:26.473 [强行插入10] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入10 running...
21:36:26.473 [强行插入11] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入11 running...
21:36:26.473 [强行插入12] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入12 running...
21:36:26.473 [强行插入13] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入13 running...
21:36:26.473 [强行插入14] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入14 running...
21:36:26.478 [强行插入15] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入15 running...
21:36:26.479 [强行插入16] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入16 running...
21:36:26.479 [强行插入17] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入17 running...
21:36:26.479 [强行插入18] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入18 running...
21:36:26.479 [强行插入19] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入19 running...
21:36:26.479 [强行插入20] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入20 running...
21:36:26.479 [强行插入21] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入21 running...
21:36:26.480 [强行插入22] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入22 running...
21:36:26.480 [强行插入23] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入23 running...
21:36:26.481 [强行插入24] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入24 running...
21:36:26.481 [强行插入25] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入25 running...
21:36:26.481 [强行插入26] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入26 running...
21:36:26.482 [强行插入27] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入27 running...
21:36:26.482 [强行插入28] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入28 running...
21:36:26.482 [强行插入29] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入29 running...
21:36:26.483 [强行插入30] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入30 running...
21:36:26.483 [强行插入31] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入31 running...
21:36:26.483 [强行插入32] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入32 running...
21:36:26.483 [强行插入33] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入33 running...
21:36:26.483 [强行插入34] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入34 running...
21:36:26.483 [强行插入35] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入35 running...
21:36:26.484 [强行插入36] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入36 running...
21:36:26.484 [强行插入37] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入37 running...
21:36:26.484 [强行插入38] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入38 running...
21:36:26.484 [强行插入39] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入39 running...
21:36:26.484 [强行插入40] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入40 running...
21:36:26.484 [强行插入41] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入41 running...
21:36:26.484 [强行插入42] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入42 running...
21:36:26.485 [强行插入43] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入43 running...
21:36:26.485 [强行插入44] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入44 running...
21:36:26.485 [强行插入45] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入45 running...
21:36:26.485 [强行插入46] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入46 running...
21:36:26.485 [强行插入47] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入47 running...
21:36:26.485 [强行插入48] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入48 running...
21:36:26.486 [强行插入49] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入49 running...
21:36:26.486 [强行插入50] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入50 running...
21:36:26.486 [强行插入51] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入51 running...
21:36:26.486 [强行插入52] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入52 running...
21:36:26.486 [强行插入53] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入53 running...
21:36:26.487 [强行插入54] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入54 running...
21:36:26.487 [强行插入55] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入55 running...
21:36:26.487 [强行插入56] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入56 running...
21:36:26.487 [强行插入57] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入57 running...
21:36:26.487 [强行插入58] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入58 running...
21:36:26.487 [强行插入59] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入59 running...
21:36:26.487 [强行插入60] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入60 running...
21:36:26.488 [强行插入61] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入61 running...
21:36:26.488 [强行插入62] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入62 running...
21:36:26.488 [强行插入63] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入63 running...
21:36:26.488 [强行插入64] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入64 running...
21:36:26.488 [强行插入65] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入65 running...
21:36:26.488 [强行插入66] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入66 running...
21:36:26.488 [强行插入67] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入67 running...
21:36:26.489 [强行插入68] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入68 running...
21:36:26.489 [强行插入69] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入69 running...
21:36:26.489 [强行插入70] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入70 running...
21:36:26.489 [强行插入71] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入71 running...
21:36:26.490 [强行插入72] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入72 running...
21:36:26.490 [强行插入73] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入73 running...
21:36:26.490 [强行插入74] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入74 running...
21:36:26.490 [强行插入75] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入75 running...
21:36:26.490 [强行插入76] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入76 running...
21:36:26.490 [强行插入77] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入77 running...
21:36:26.491 [强行插入78] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入78 running...
21:36:26.491 [强行插入79] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入79 running...
21:36:26.495 [强行插入80] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入80 running...
21:36:26.495 [强行插入81] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入81 running...
21:36:26.496 [强行插入82] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入82 running...
21:36:26.496 [强行插入83] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入83 running...
21:36:26.496 [强行插入84] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入84 running...
21:36:26.497 [强行插入85] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入85 running...
21:36:26.497 [强行插入86] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入86 running...
21:36:26.498 [强行插入87] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入87 running...
21:36:26.498 [强行插入88] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入88 running...
21:36:26.499 [强行插入89] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入89 running...
21:36:26.499 [强行插入90] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入90 running...
21:36:26.499 [强行插入91] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入91 running...
21:36:26.499 [强行插入92] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入92 running...
21:36:26.500 [强行插入93] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入93 running...
21:36:26.500 [强行插入94] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入94 running...
21:36:26.500 [强行插入95] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入95 running...
21:36:26.500 [强行插入96] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入96 running...
21:36:26.500 [强行插入97] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入97 running...
21:36:26.501 [强行插入98] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入98 running...
21:36:26.501 [强行插入99] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入99 running...---------
非公平锁
21:35:25.239 [t0] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t0 running...
21:35:25.258 [t1] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t1 running...
21:35:25.268 [t2] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t2 running...
21:35:25.279 [t3] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t3 running...
21:35:25.290 [t4] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t4 running...
21:35:25.301 [t5] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t5 running...
21:35:25.312 [t6] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t6 running...
21:35:25.323 [t7] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t7 running...
21:35:25.335 [t8] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t8 running...
21:35:25.345 [t9] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t9 running...
21:35:25.356 [t10] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t10 running...
21:35:25.369 [t11] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t11 running...
21:35:25.382 [t12] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t12 running...
21:35:25.393 [t13] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t13 running...
21:35:25.406 [t14] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t14 running...
21:35:25.416 [t15] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t15 running...
21:35:25.429 [t16] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t16 running...
21:35:25.441 [t17] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t17 running...
21:35:25.453 [t18] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t18 running...
21:35:25.467 [t19] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t19 running...
21:35:25.481 [t20] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t20 running...
21:35:25.492 [t21] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t21 running...
21:35:25.503 [t22] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t22 running...
21:35:25.515 [t23] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t23 running...
21:35:25.526 [t24] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t24 running...
21:35:25.538 [t25] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t25 running...
21:35:25.548 [t26] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t26 running...
21:35:25.561 [t27] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t27 running...
21:35:25.573 [t28] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t28 running...
21:35:25.583 [t29] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t29 running...
21:35:25.596 [t30] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t30 running...
21:35:25.608 [t31] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t31 running...
21:35:25.620 [t32] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t32 running...
21:35:25.631 [t33] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t33 running...
21:35:25.643 [t34] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t34 running...
21:35:25.654 [t35] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t35 running...
21:35:25.667 [t36] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t36 running...
21:35:25.693 [t37] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t37 running...
21:35:25.712 [t38] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t38 running...
21:35:25.725 [t39] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t39 running...
21:35:25.737 [t40] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t40 running...
21:35:25.749 [t41] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t41 running...
21:35:25.773 [t42] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t42 running...
21:35:25.785 [t43] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t43 running...
21:35:25.795 [t44] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t44 running...
21:35:25.806 [t45] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t45 running...
21:35:25.817 [t46] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t46 running...
21:35:25.828 [t47] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t47 running...
21:35:25.839 [t48] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t48 running...
21:35:25.850 [t49] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t49 running...
21:35:25.861 [t50] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t50 running...
21:35:25.874 [t51] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t51 running...
21:35:25.885 [t52] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t52 running...
21:35:25.898 [t53] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t53 running...
21:35:25.911 [t54] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t54 running...
21:35:25.923 [t55] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t55 running...
21:35:25.936 [t56] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t56 running...
21:35:25.948 [t57] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t57 running...
21:35:25.961 [t58] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t58 running...
21:35:25.975 [t59] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t59 running...
21:35:25.989 [t60] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t60 running...
21:35:26.001 [t61] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t61 running...
21:35:26.013 [t62] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t62 running...
21:35:26.025 [t63] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t63 running...
21:35:26.038 [t64] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t64 running...
21:35:26.050 [t65] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t65 running...
21:35:26.062 [t66] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t66 running...
21:35:26.073 [t67] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t67 running...
21:35:26.085 [t68] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t68 running...
21:35:26.101 [t69] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t69 running...
21:35:26.114 [t70] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t70 running...
21:35:26.125 [t71] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t71 running...
21:35:26.138 [t72] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t72 running...
21:35:26.150 [t73] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t73 running...
21:35:26.164 [t74] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t74 running...
21:35:26.175 [t75] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t75 running...
21:35:26.189 [t76] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t76 running...
21:35:26.200 [t77] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t77 running...
21:35:26.211 [t78] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t78 running...
21:35:26.223 [t79] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t79 running...
21:35:26.237 [t80] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t80 running...
21:35:26.249 [t81] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t81 running...
21:35:26.261 [t82] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t82 running...
21:35:26.261 [强行插入50] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入50 running...
21:35:26.263 [强行插入52] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入52 running...
21:35:26.263 [强行插入53] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入53 running...
21:35:26.271 [强行插入54] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入54 running...
21:35:26.272 [强行插入55] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入55 running...
21:35:26.285 [t83] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t83 running...
21:35:26.286 [强行插入73] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入73 running...
21:35:26.293 [强行插入74] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入74 running...
21:35:26.301 [强行插入75] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入75 running...
21:35:26.312 [强行插入76] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入76 running...
21:35:26.321 [强行插入77] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入77 running...
21:35:26.328 [强行插入78] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入78 running...
21:35:26.330 [强行插入79] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入79 running...
21:35:26.336 [强行插入80] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入80 running...
21:35:26.341 [强行插入81] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入81 running...
21:35:26.342 [强行插入83] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入83 running...
21:35:26.359 [强行插入84] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入84 running...
21:35:26.359 [强行插入85] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入85 running...
21:35:26.370 [t84] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t84 running...
21:35:26.381 [t85] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t85 running...
21:35:26.393 [t86] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t86 running...
21:35:26.405 [t87] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t87 running...
21:35:26.416 [t88] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t88 running...
21:35:26.427 [t89] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t89 running...
21:35:26.438 [t90] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t90 running...
21:35:26.449 [t91] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t91 running...
21:35:26.462 [t92] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t92 running...
21:35:26.475 [t93] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t93 running...
21:35:26.486 [t94] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t94 running...
21:35:26.497 [t95] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t95 running...
21:35:26.508 [t96] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t96 running...
21:35:26.520 [t97] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t97 running...
21:35:26.540 [t98] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t98 running...
21:35:26.552 [t99] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - t99 running...
21:35:26.553 [强行插入0] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入0 running...
21:35:26.555 [强行插入1] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入1 running...
21:35:26.556 [强行插入2] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入2 running...
21:35:26.556 [强行插入3] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入3 running...
21:35:26.556 [强行插入4] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入4 running...
21:35:26.557 [强行插入5] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入5 running...
21:35:26.557 [强行插入6] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入6 running...
21:35:26.558 [强行插入7] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入7 running...
21:35:26.558 [强行插入8] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入8 running...
21:35:26.558 [强行插入9] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入9 running...
21:35:26.559 [强行插入10] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入10 running...
21:35:26.559 [强行插入11] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入11 running...
21:35:26.559 [强行插入12] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入12 running...
21:35:26.560 [强行插入13] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入13 running...
21:35:26.560 [强行插入14] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入14 running...
21:35:26.560 [强行插入15] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入15 running...
21:35:26.560 [强行插入16] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入16 running...
21:35:26.560 [强行插入17] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入17 running...
21:35:26.561 [强行插入18] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入18 running...
21:35:26.561 [强行插入19] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入19 running...
21:35:26.561 [强行插入20] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入20 running...
21:35:26.561 [强行插入21] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入21 running...
21:35:26.562 [强行插入22] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入22 running...
21:35:26.562 [强行插入23] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入23 running...
21:35:26.562 [强行插入24] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入24 running...
21:35:26.562 [强行插入25] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入25 running...
21:35:26.562 [强行插入26] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入26 running...
21:35:26.562 [强行插入27] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入27 running...
21:35:26.563 [强行插入28] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入28 running...
21:35:26.563 [强行插入29] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入29 running...
21:35:26.563 [强行插入30] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入30 running...
21:35:26.563 [强行插入31] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入31 running...
21:35:26.563 [强行插入32] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入32 running...
21:35:26.563 [强行插入33] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入33 running...
21:35:26.564 [强行插入34] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入34 running...
21:35:26.564 [强行插入35] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入35 running...
21:35:26.564 [强行插入36] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入36 running...
21:35:26.564 [强行插入37] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入37 running...
21:35:26.564 [强行插入38] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入38 running...
21:35:26.565 [强行插入39] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入39 running...
21:35:26.565 [强行插入40] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入40 running...
21:35:26.565 [强行插入41] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入41 running...
21:35:26.565 [强行插入42] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入42 running...
21:35:26.565 [强行插入43] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入43 running...
21:35:26.566 [强行插入44] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入44 running...
21:35:26.567 [强行插入45] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入45 running...
21:35:26.568 [强行插入46] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入46 running...
21:35:26.568 [强行插入47] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入47 running...
21:35:26.568 [强行插入48] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入48 running...
21:35:26.568 [强行插入49] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入49 running...
21:35:26.568 [强行插入51] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入51 running...
21:35:26.569 [强行插入56] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入56 running...
21:35:26.569 [强行插入57] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入57 running...
21:35:26.569 [强行插入58] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入58 running...
21:35:26.569 [强行插入59] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入59 running...
21:35:26.570 [强行插入60] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入60 running...
21:35:26.570 [强行插入61] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入61 running...
21:35:26.571 [强行插入62] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入62 running...
21:35:26.571 [强行插入63] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入63 running...
21:35:26.571 [强行插入64] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入64 running...
21:35:26.572 [强行插入65] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入65 running...
21:35:26.572 [强行插入66] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入66 running...
21:35:26.575 [强行插入67] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入67 running...
21:35:26.576 [强行插入68] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入68 running...
21:35:26.576 [强行插入69] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入69 running...
21:35:26.576 [强行插入70] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入70 running...
21:35:26.576 [强行插入71] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入71 running...
21:35:26.576 [强行插入72] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入72 running...
21:35:26.576 [强行插入82] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入82 running...
21:35:26.576 [强行插入86] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入86 running...
21:35:26.576 [强行插入87] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入87 running...
21:35:26.577 [强行插入88] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入88 running...
21:35:26.577 [强行插入89] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入89 running...
21:35:26.577 [强行插入90] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入90 running...
21:35:26.577 [强行插入91] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入91 running...
21:35:26.577 [强行插入92] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入92 running...
21:35:26.577 [强行插入93] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入93 running...
21:35:26.577 [强行插入94] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入94 running...
21:35:26.577 [强行插入95] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入95 running...
21:35:26.577 [强行插入96] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入96 running...
21:35:26.578 [强行插入97] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入97 running...
21:35:26.578 [强行插入98] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入98 running...
21:35:26.578 [强行插入99] DEBUG com.sonny.classexercise.concurrent.lock.ReentrantLockDemo5 - 强行插入99 running...

ReentrantLock 的构造函数中，默认的无参构造函数将会把 Sync 对象创建为 NonfairSync 对象，这是一个“非公平锁”；而另一个构造函数 ReentrantLock(boolean fair)传入参数为 true 时将会把 Sync 对象创建为“公平锁” FairSync。

nonfairTryAcquire(int acquires)方法，对于非公平锁，只要 CAS 设置同步状态成功，则表示当前线程获取了锁，而公平锁则不同。tryAcquire 方法，该方法与 nonfairTryAcquire(int acquires)比较，唯一不同的位置为判断条件多了 hasQueuedPredecessors()方法，即加入了同步队列中当前节点是否有前驱节点的判断，如果该方法返回 true，则表示有线程比当前线程更早地请求获取锁，因此需要等待前驱线程获取并释放锁之后才能继续获取锁。

二、原理解析

1 MESA模型

Monitor管程：又称为监视器，它是描述并实现对共享变量的管理与操作，使其在多线程下能正确执行的一个管理策略。可以理解成临界区资源的管理策略。MESA模型是管程的一种实现策略，Java使用的就是该策略。

相关术语

  • enterQueue：管程的入口队列，当线程在申请进入管程中发现管程已被占用，那么就会进入该队列并阻塞。
  • varQueue：条件变量等待队列，在线程执行过程中(已进入管程)，条件变量不符合要求，线程被阻塞时会进入该队列。
  • condition variables：条件变量，存在于管程中，一般由程序赋予意义，程序通过判断条件变量执行阻塞或唤醒操作。
    阻塞和唤醒：wait()和await()就是阻塞操作。notify()和notifyAll()就是唤醒操作。

执行流程

  1. 多个线程进入入口等待队列enterQueue，JVM会保证只有一个线程能进入管程内部，Synchronized中进入管程的线程随机。
  2. 进入管程后通过条件变量判断当前线程是否能执行操作，如果不能跳到step3，否则跳到step4。
  3. 条件变量调用阻塞方法，将当前线程放入varQueue，等待其他线程唤醒，跳回step1。
  4. 执行相应操作，执行完毕后调用notify/notifyAll等唤醒操作，唤醒对应varQueue中的一个或多个等待线程。
  5. 被唤醒的线程会从varQueue放入enterQueue中，再次执行step1。
  6. 被唤醒的线程不会立即执行，会被放入enterQueue，等待JVM下一次选择运行，而正在运行的线程会继续执行，直到程序执行完毕。

2 LockSupport

LockSupport 定义了一组的公共静态方法，这些方法提供了最基本的线程阻 塞和唤醒功能，而 LockSupport 也成为构建同步组件的基础工具。

LockSupport 定义了一组以 park 开头的方法用来阻塞当前线程，以及 unpark(Thread thread)方法来唤醒一个被阻塞的线程。LockSupport 增加了 park(Object blocker)、parkNanos(Object blocker,long nanos)和 parkUntil(Object blocker,long deadline)3 个方法，用于实现阻塞当前线程的功能，其中参数 blocker 是用来标识当前线程在等待的对象（以下称为阻塞对象），该对象主要用于问题排查和系统监控。

3 CLH 队列锁

当一个线程需要获取锁时：

  1. 创建一个的QNode，将其中的locked设置为true表示需要获取锁，myPred 表示对其前驱结点的引用

  2. 线程 A 对 tail 域调用 getAndSet 方法，使自己成为队列的尾部，同时获取
    一个指向其前驱结点的引用 myPred

    线程 B 需要获得锁，同样的流程再来一遍

  3. 线程就在前驱结点的 locked 字段上旋转，直到前驱结点释放锁(前驱节点 的锁值 locked == false)

  4. .当一个线程需要释放锁时，将当前结点的 locked 域设置为 false，同时回收 前驱结点如上图所示，前驱结点释放锁，线程 A 的 myPred 所指向的前驱结点的 locked 字段变为 false，线程 A 就可以获取到锁。 CLH 队列锁的优点是空间复杂度低（如果有 n 个线程，L 个锁，每个线程每 次只获取一个锁，那么需要的存储空间是 O（L+n），n 个线程有 n 个 myNode， L 个锁有 L 个 tail）。CLH 队列锁常用在 SMP 体系结构下。 Java 中的 AQS 是 CLH 队列锁的一种变体实现。

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