If method register is invoked simultaneously by multiple threads, it could result in a race condition leading to an incorrect _set value.

如果方法register同时由多个线程调用，那么它会产生一个竞争状态，导致出现错误的_ set值。

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If method register is invoked simultaneously by multiple threads, it could result in a race condition leading to an incorrect _set value.

如果方法register同时由多个线程调用，那么它会产生一个竞争状态，导致出现错误的_ set值。

youdao