For example, if a thread enters a lock in upgradeable mode and then enters the lock in write mode, the order in which the thread exits the two modes does not matter.

例如，如果一个线程先进入可升级模式锁定状态，然后再进入写入模式锁定状态，则线程可以任何顺序退出这两种模式。

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For example, if a thread enters a lock in upgradeable mode and then enters the lock in write mode, the order in which the thread exits the two modes does not matter.

例如，如果一个线程先进入可升级模式锁定状态，然后再进入写入模式锁定状态，则线程可以任何顺序退出这两种模式。

youdao