@smallX 超声波可以的，我之前试过

@WngShhng
Reports on while loops which spin on the value of a non-volatile field, waiting for it to be changed by another thread.
In addition to being potentially extremely CPU intensive when little work is done inside the loop, such loops are likely have different semantics than intended, as the Java Memory Model allows such field accesses to be hoisted out of the loop, causing the loop to never complete even if another thread does change the field's value.
Additionally since Java 9 it's recommended to call Thread.onSpinWait() inside spin loop on a volatile field which may significantly improve performance on some hardware.


8 够用了

@LuLucius 你自己赚了 100，别人拿走 90，剩下 10 给你，然后你说自己生活比以前好多了

这本来就是社会分配不公的问题，现在国内最大的问题不是其它，就是房子