为什么要用统一事件源信号是一种异步事件：信号处理函数和程序的主循环是两条不同的执行路径。即当进程收到信号时，操作系统会中断进程当前的正常流程，转而进入信号处理函数去处理信号，完成后再返回中断的地方继续执行。很显然，信号处理函数需要尽可能地快速执行完毕，以确保该信号不会被屏蔽太久。因为为了避免信号竞态...

【linux高性能服务器编程】中篇

代理squidvarnish抓包所有数据包进行分类socketAPIsocket地址结构体

【Linux高性能服务器编程】前篇

tcp\ip协议族网络层靠ip找电脑数据链路层靠mac找电脑_arp和rarp网络层wan用路由器连接lan由多个中介节点路由器连一起ip协议追核心寻找合适的下一跳另外的核心 icmp给ip站岗的不严格意义上的网络层报文来管差错类型值不同查询的是一个信号的排头兵先遣部队，迅捷刺猴传输层sctp...

linux高性能服务器编程之poll

一.概述：和select不同的是，poll使用一个pollfd来指向所要监听的fd，事件，返回事件。（pollfd下面详细讲。）并且poll没有最大的文件描述符数量的限制，是自己定义一个pollfd数组来实现的。它的缺点和select差不多，即（1）每次调用poll，都需要把fd集合从用户态...

linux高性能服务器编程之epoll

一.概述： epoll是多路复用的一种，但它比select和poll更加高效。具体体现在以下几个方面：（1）.select能打开的文件描述符是有一定限制的，默认情况下是2048，这对应那些大型服务器来说h是不足的。但 epoll则没有这个限制，它所支持的fd上限是最大可以打开文件的数目，这个数字一...

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更新时间 2023-11-26 12:35:50

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