Pollout 值
WebApr 1, 2013 · 返回值: >0:数组fds中准备好读、写或出错状态的那些socket描述符的总数量; ==0:数组fds中没有任何socket描述符准备好读、写,或出错;此时poll超时,超时时间 … WebPOLLRDNORM Normal data may be read without blocking. POLLRDBAND Priority data may be read without blocking. POLLPRI High priority data may be read without blocking. POLLOUT Normal data may be written without blocking. POLLWRNORM Equivalent to POLLOUT. POLLWRBAND Priority data may be written.
Pollout 值
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WebPOLLOUT 事件触发条件:connfd的发送缓冲区(内核)不满(可以容纳数据) 注:connfd 的接收缓冲区(内核)数据被接收后会被清空,当发出数据段后接收到对方的ACK段 …
http://gityuan.com/2024/01/05/linux-poll-select/ WebPOLLOUT The file or message queue is capable of accepting output. POLLPRI An exceptional condition is present on the file or message queue. revents: Returned events. This field specifies the events that have occurred. This can be any combination of the events requested by the events field. This field can also contain one of the following flags ...
WebMar 7, 2024 · POLLIN 标志定义为 POLLRDNORM 和 POLLRDBAND 标志值的组合。 POLLOUT 标志定义为与 POLLWRNORM 标志值相同。. 对于不满足状态查询且没有错误 … WebNov 21, 2024 · ZMQ_POLLOUT:发送消息(zmq socket)或者字节(fd ... 返回值. poll消息成功时,zmq_poll函数返回检测到事件请求的item个数,同时结构体zmq_pollitem_t 中 …
WebApr 14, 2024 · 概述 如果我們要開發一個高併發的tcp程式常規的做法是:多程序或者多執行緒即:使用其中一個執行緒或者程序去監聽有沒有客戶端連線上來,一旦有新客戶端連 …
WebApr 15, 2024 · 福建一个高颜值90后女副市长近日因其形象干练、自信大方而走红网络。. 这位女副市长名叫林婧仪,曾就读于福建师范大学,获得心理学硕士学位,后又赴英国深 … how did the riots influence lbjWebExplanation. The POLLOUT command is one of a family of unique "polling" commands on the BS2p, BS2pe, and BS2px modules. The other commands in this family include … how did the right to life movement beginWeb一、IO多路复用:zmq_poll () int zmq_poll (zmq_pollitem_t *items, int nitems, long timeout); timeout:等待时间。. 可取的值如下:. >0:等待指定的毫秒。. 指定的毫秒内items中有 … how did the right whale get its nameWebMay 11, 2015 · If poll () sets the POLLOUT flag then at least one byte may be written without blocking. You may then find that a write () operation performs only a partial write, so … how did the riddler know about falconeWeb第二,若将时间值设具体值,函数经过timeout时间阻塞状态,监测是否有事件发生,文件无变化返回0,有变化返回一个正值。第三,0;非阻塞等待,直接测试所有指定的描述符 … how did the river thames get its nameWebPOLLOUT只有在底层完成上一次的write操作后才能置位; POLLIN表示的是有数据可读,poll不是必须的; POLLOUT表示的是写空闲,即上一次发送完成,可以进行下一次发 … how did the righteous brothers get their nameWeb如果在超时范围内,任何一个用户感兴趣的事件发生了,poll将会返回,返回值为产生用户感兴趣事件的文件描述符个数;如果超时了,没有任何一个用户感兴趣的事件发生,则poll … how did the riddler become evil