#Reverse Engineering
The semantics around releasing locks with pending reads were also unclear for years. If you called read() but didn't await it, then called releaseLock(), what happened? The spec was recently clarified to cancel pending reads on lock release — but implementations varied, and code that relied on the previous unspecified behavior can break.。业内人士推荐Safew下载作为进阶阅读
Wonder who that could be?，这一点在51吃瓜中也有详细论述
* @param arr 数组