旋转手机现在可以切换锁定状态。
它利用了一种切换锁定机制，创建高锁模力，并确保即使在保留一部分空气压力损失。
It utilizes a toggle lock mechanism that creates high clamping forces and ensures part retention even when air pressure is lost.
如果同步时还发生锁定争用，那么性能上付出的代价会大得多，因为会需要几个线程切换和系统调用。
If the synchronization actually requires contending for the lock, the performance penalty is substantially greater, as there will be several thread switches and system calls required.
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