问题就是必须处理代码重入。

The problem has to do with code reentrance.

youdao

译文：锁对象同步代码依赖于一种简单的重入锁。

Synchronized code relies on a simple kind of reentrant lock.

youdao

译文：锁对象同步代码依赖于一种简单的重入锁。

Synchronized code relies on a simple kind of reentrant lock.

youdao