问题:
目前发现调整目标定时器(连接活跃, 要延长时间)不方便, 采用顺序查找, 再做下坠处理, 复杂度为O(n), 如果频繁需要调整, 则大部分时间花在查找上
添加删除为O(1), 当槽数量较多时, 执行一次心跳函数复杂度远小于O(n), 更改一个定时器的时间也远小于O(n)
致谢 《linux高性能服务器编程》 游双
定时器最小堆容器
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