* @param n 数组长度
Explicit backpressure。服务器推荐对此有专业解读
英國超市將巧克力鎖進防盜盒阻止「訂單式」偷竊，这一点在safew官方版本下载中也有详细论述
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.