99%的人都知道用AQS实现互斥锁，你还在做那1%？

package com.ams.thread.lesson5;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.AbstractQueuedSynchronizer;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;

/**
 * 关注微信公众号"AI码师"获取项目源码及2021面试题一套
 *
 * @author: AI码师
 * Date: 2021/12/30 6:09 上午
 * Description:
 */
public class MyMutexLock implements Lock {
    private final LockAQS lockAQS = new LockAQS();

    @Override
    public void lock() {
        lockAQS.acquire(1);
    }

    @Override
    public void lockInterruptibly() throws InterruptedException {
        lockAQS.acquireInterruptibly(1);
    }

    @Override
    public boolean tryLock() {
        return lockAQS.tryAcquire(1);
    }

    @Override
    public boolean tryLock(long time, TimeUnit unit) throws InterruptedException {
        return lockAQS.tryAcquireNanos(1, unit.toNanos(time));
    }

    @Override
    public void unlock() {
        lockAQS.release(1);
    }

    @Override
    public Condition newCondition() {
        return lockAQS.newCondition();
    }

    private static class LockAQS extends AbstractQueuedSynchronizer {
        @Override
        protected boolean isHeldExclusively() {
            return getState() == 1;
        }

        /**
         * 重新获取锁的逻辑，只有当前同步状态为0，才允许获取成功
         *
         * @param arg
         * @return
         */
        @Override
        protected boolean tryAcquire(int arg) {
            // 通过cas机制去设置新值，设置成功，则代表同步状态为0
            if (compareAndSetState(0, 1)) {
                return true;
            }
            return false;
        }

        @Override
        protected boolean tryRelease(int arg) {
            // 首先判断当前state 如果当前状态值不是1 说明当前锁没有被人获取
            if (getState() != 1) {
                return false;
            }
            setExclusiveOwnerThread(null);
            setState(0);
            return true;
        }

        Condition newCondition() {
            return new ConditionObject();
        }
    }

}

package com.ams.thread.lesson5;

import cn.hutool.core.thread.ThreadUtil;
import lombok.extern.slf4j.Slf4j;

/**
 * 关注微信公众号"AI码师"获取项目源码及2021面试题一套
 *
 * @author: AI码师
 * Date: 2021/12/30 6:08 上午
 * Description:
 */
@Slf4j
public class Example16 {
private static MyMutexLock myMutexLock = new MyMutexLock();

    public static void main(String[] args) {
        new Thread(new Thread1()).start();
        new Thread(new Thread2()).start();
    }
    static class Thread1 implements Runnable {

        @Override
        public void run() {
            myMutexLock.lock();
            log.info("Thread1 获取到锁");
            ThreadUtil.sleep(5000);
            myMutexLock.unlock();
        }
    }
    static class Thread2 implements Runnable {

        @Override
        public void run() {
            myMutexLock.lock();
            log.info("Thread2 获取到锁");
            ThreadUtil.sleep(5000);
            myMutexLock.unlock();
        }
    }
}