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	https://github.com/Snailclimb/JavaGuide/blob/main/docs/java/concurrent/java-lock.md#一把锁到底保护什么
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	https://github.com/Snailclimb/JavaGuide/blob/main/docs/java/concurrent/java-lock.md#互斥锁同一时刻只允许一个线程进入
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	https://github.com/Snailclimb/JavaGuide/blob/main/docs/java/concurrent/java-lock.md#自旋锁不阻塞先原地等一会儿
	https://github.com/Snailclimb/JavaGuide/blob/main/docs/java/concurrent/java-lock.md#悲观锁乐观锁和-cas-的位置
乐观锁和悲观锁详解	https://github.com/Snailclimb/JavaGuide/blob/main/docs/java/concurrent/optimistic-lock-and-pessimistic-lock.md
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Atomic 原子类总结	https://github.com/Snailclimb/JavaGuide/blob/main/docs/java/concurrent/atomic-classes.md
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	https://github.com/Snailclimb/JavaGuide/blob/main/docs/java/concurrent/java-lock.md#总结
	https://github.com/Snailclimb/JavaGuide/blob/main/docs/java/concurrent/java-lock.md#参考资料
The Java Language Specification, Chapter 17. Threads and Locks	https://docs.oracle.com/javase/specs/jls/se24/html/jls-17.html
The Java Virtual Machine Specification, monitorenter	https://docs.oracle.com/javase/specs/jvms/se24/html/jvms-6.html#jvms-6.5.monitorenter
Oracle Java API: Lock	https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/Lock.html
Oracle Java API: ReentrantLock	https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/ReentrantLock.html
Oracle Java API: StampedLock	https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/StampedLock.html
OpenJDK JEP 374: Deprecate and Disable Biased Locking	https://openjdk.org/jeps/374
OpenJDK JEP 491: Synchronize Virtual Threads without Pinning	https://openjdk.org/jeps/491
OSTEP 中文版：Locks	https://pages.cs.wisc.edu/~remzi/OSTEP/Chinese/28.pdf
MIT 6.005: Locks and Synchronization	http://web.mit.edu/6.005/www/fa15/classes/23-locks/
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