LockSupport概覽

https://www.cnblogs.com/lscz3633/p/7605427.htmlhtml Basic thread blocking primitives for creating locks and other synchronization classes.用來建立鎖及其餘同步類的基礎線程阻塞原語。這是java doc中的解釋，如下是一個先進先出 (first-in-first-

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