{"id":10679,"date":"2025-04-18T18:08:01","date_gmt":"2025-04-18T10:08:01","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/10679.html"},"modified":"2025-04-18T18:08:01","modified_gmt":"2025-04-18T10:08:01","slug":"%e9%ab%98%e5%b9%b6%e5%8f%91%e6%9c%8d%e5%8a%a1%e5%99%a8-epoll%e7%9b%b8%e5%85%b3%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/10679.html","title":{"rendered":"\u9ad8\u5e76\u53d1\u670d\u52a1\u5668--epoll\u76f8\u5173\u51fd\u6570"},"content":{"rendered":"<\/p>\n

\u4e00\u3001\u521b\u5efaepoll_create()<\/h3>\n

1.\u529f\u80fd<\/h4>\n

\u662f Linux \u7cfb\u7edf\u4e2d\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a epoll \u5b9e\u4f8b\u7684\u7cfb\u7edf\u8c03\u7528\u3002epoll \u662f\u4e00\u79cd\u9ad8\u6548\u7684 I\/O \u4e8b\u4ef6\u901a\u77e5\u673a\u5236，\u901a\u5e38\u7528\u4e8e\u9ad8\u6027\u80fd\u7f51\u7edc\u670d\u52a1\u5668\u6216\u9700\u8981\u5904\u7406\u5927\u91cf\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u573a\u666f\u3002<\/p>\n

2.\u51fd\u6570\u539f\u578b<\/h4>\n

int epoll_create(int size); <\/p>\n

3.\u53c2\u6570<\/h4>\n

\u2460.\u00a0size: \u6307\u5b9a epoll \u5b9e\u4f8b\u53ef\u4ee5\u76d1\u63a7\u7684\u6700\u5927\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\u3002\u8fd9\u4e2a\u53c2\u6570\u5728 Linux \u5185\u6838 2.6.8 \u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\u5b9e\u9645\u4e0a\u88ab\u5ffd\u7565，\u56e0\u4e3a\u5185\u6838\u4f1a\u52a8\u6001\u8c03\u6574\u8d44\u6e90\u5206\u914d\u3002<\/p>\n

4.\u8fd4\u56de\u503c<\/h4>\n

\u2460.\u00a0\u6210\u529f\u65f6\u8fd4\u56de\u4e00\u4e2a\u975e\u8d1f\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26，\u8868\u793a\u521b\u5efa\u7684 epoll \u5b9e\u4f8b\u3002 \u2461. \u5931\u8d25\u65f6\u8fd4\u56de -1，\u5e76\u8bbe\u7f6e errno \u4e3a\u76f8\u5e94\u7684\u9519\u8bef\u7801\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u4e0a\u6811\u3001\u4e0b\u6811\u3001\u4fee\u6539epoll_ctl()<\/h3>\n

1.\u529f\u80fd<\/h4>\n

\u7528\u4e8e\u5411 epoll \u5b9e\u4f8b\u4e2d\u6dfb\u52a0\u3001\u4fee\u6539\u6216\u5220\u9664\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u76d1\u542c\u3002<\/p>\n

2.\u51fd\u6570\u539f\u578b<\/h4>\n

int epoll_ctl(int epfd, int op, int fd, struct epoll_event* event); <\/p>\n

3.\u53c2\u6570<\/h4>\n

\u2460.\u00a0epfd: \u901a\u8fc7 epoll_create \u6216 epoll_create1 \u521b\u5efa\u7684 epoll \u5b9e\u4f8b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002 \u2461. op: \u64cd\u4f5c\u7c7b\u578b，\u53ef\u4ee5\u662f\u4ee5\u4e0b\u4e4b\u4e00： \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0EPOLL_CTL_ADD: \u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u5230 epoll \u5b9e\u4f8b\u4e2d\u3002 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0EPOLL_CTL_DEL: \u4ece epoll \u5b9e\u4f8b\u4e2d\u5220\u9664\u4e00\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0EPOLL_CTL_MOD: \u4fee\u6539\u4e00\u4e2a\u5df2\u5b58\u5728\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u63a9\u7801\u3002 \u2462. fd: \u9700\u8981\u64cd\u4f5c\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002 \u2463. event: \u6307\u5411 epoll_event \u7ed3\u6784\u4f53\u7684\u6307\u9488，\u7528\u4e8e\u6307\u5b9a\u76d1\u542c\u7684\u4e8b\u4ef6\u7c7b\u578b\u548c\u5173\u8054\u6570\u636e\u3002<\/p>\n

struct epoll_event {
\n uint32_t events; \/\/ \u4e8b\u4ef6\u63a9\u7801
\n epoll_data_t data; \/\/ \u7528\u6237\u6570\u636e
\n}; <\/p>\n

events: \u6307\u5b9a\u9700\u8981\u76d1\u542c\u7684\u4e8b\u4ef6\u7c7b\u578b，\u4f8b\u5982 EPOLLIN（\u53ef\u8bfb）\u3001EPOLLOUT（\u53ef\u5199）\u7b49\u3002 data: \u7528\u6237\u6570\u636e，\u53ef\u4ee5\u662f\u6587\u4ef6\u63cf\u8ff0\u7b26\u3001\u6307\u9488\u6216\u5176\u4ed6\u81ea\u5b9a\u4e49\u6570\u636e\u3002<\/p>\n

4.\u8fd4\u56de\u503c<\/h4>\n

\u2460.\u00a0\u6210\u529f\u65f6\u8fd4\u56de 0\u3002 \u2461. \u5931\u8d25\u65f6\u8fd4\u56de -1，\u5e76\u8bbe\u7f6e errno \u4e3a\u76f8\u5e94\u7684\u9519\u8bef\u7801\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u76d1\u542cepoll_wait()<\/h3>\n

1.\u529f\u80fd<\/h4>\n

\u662f Linux \u7cfb\u7edf\u4e2d\u7528\u4e8e\u7b49\u5f85 epoll \u5b9e\u4f8b\u4e2d\u4e8b\u4ef6\u53d1\u751f\u7684\u7cfb\u7edf\u8c03\u7528\u3002\u5b83\u662f epoll \u673a\u5236\u7684\u6838\u5fc3\u90e8\u5206，\u7528\u4e8e\u963b\u585e\u7b49\u5f85\u76f4\u5230\u6709\u4e8b\u4ef6\u53d1\u751f\u6216\u8d85\u65f6\u3002<\/p>\n

2.\u51fd\u6570\u539f\u578b<\/h4>\n

int epoll_wait(int epfd, struct epoll_event* events, int maxevents, int timeout); <\/p>\n

3.\u53c2\u6570<\/h4>\n

\u2460.\u00a0epfd: \u901a\u8fc7 epoll_create \u6216 epoll_create1 \u521b\u5efa\u7684 epoll \u5b9e\u4f8b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002 \u2461. events: \u7528\u4e8e\u5b58\u50a8\u8fd4\u56de\u7684\u4e8b\u4ef6\u7684\u6570\u7ec4\u6307\u9488\u3002\u6bcf\u4e2a\u4e8b\u4ef6\u7531\u4e00\u4e2a epoll_event \u7ed3\u6784\u4f53\u8868\u793a\u3002 \u2462. maxevents: \u6307\u5b9a events \u6570\u7ec4\u7684\u6700\u5927\u5bb9\u91cf\u3002\u5fc5\u987b\u5927\u4e8e 0\u3002 \u2463. timeout: \u6307\u5b9a\u7b49\u5f85\u4e8b\u4ef6\u53d1\u751f\u7684\u8d85\u65f6\u65f6\u95f4（\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d）\u3002\u53ef\u4ee5\u662f\u4ee5\u4e0b\u503c： \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6b63\u6570：\u7b49\u5f85\u6307\u5b9a\u7684\u6beb\u79d2\u6570\u3002 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00：\u7acb\u5373\u8fd4\u56de，\u4e0d\u963b\u585e\u3002 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0-1：\u65e0\u9650\u671f\u963b\u585e，\u76f4\u5230\u6709\u4e8b\u4ef6\u53d1\u751f\u3002<\/p>\n

4.\u8fd4\u56de\u503c<\/h4>\n

\u2460.\u00a0\u6210\u529f\u65f6\u8fd4\u56de\u89e6\u53d1\u4e8b\u4ef6\u7684\u6570\u91cf（\u53ef\u80fd\u5c0f\u4e8e maxevents）\u3002 \u2461. \u5931\u8d25\u65f6\u8fd4\u56de -1，\u5e76\u8bbe\u7f6e errno \u4e3a\u76f8\u5e94\u7684\u9519\u8bef\u7801\u3002 \u2462. \u5982\u679c\u8d85\u65f6\u8fd4\u56de 0\u3002<\/p>\n<\/p>\n

\u56db\u3001epoll\u7684\u4e24\u79cd\u89e6\u53d1\u6a21\u5f0f<\/h3>\n

1.\u6c34\u5e73\u89e6\u53d1（Level-Triggered，LT）<\/h4>\n

\u00a0\u6c34\u5e73\u89e6\u53d1\u662fepoll\u7684\u9ed8\u8ba4\u6a21\u5f0f，\u5b83\u5728\u6587\u4ef6\u63cf\u8ff0\u7b26\u5904\u4e8e\u5c31\u7eea\u72b6\u6001\u65f6\u6301\u7eed\u901a\u77e5\u5e94\u7528\u7a0b\u5e8f，\u76f4\u5230\u4e8b\u4ef6\u88ab\u5904\u7406\u5b8c\u6bd5\u3002 \u2460.\u00a0\u89e6\u53d1\u6761\u4ef6：\u53ea\u8981\u6587\u4ef6\u63cf\u8ff0\u7b26\u5904\u4e8e\u5c31\u7eea\u72b6\u6001（\u4f8b\u5982\u53ef\u8bfb\u6216\u53ef\u5199），epoll_wait\u5c31\u4f1a\u6301\u7eed\u8fd4\u56de\u8be5\u4e8b\u4ef6\u3002 \u2461. \u4e8b\u4ef6\u5904\u7406：\u5e94\u7528\u7a0b\u5e8f\u9700\u8981\u6301\u7eed\u8f6e\u8be2\u4e8b\u4ef6，\u76f4\u5230\u4e8b\u4ef6\u4e0d\u518d\u5c31\u7eea\u3002 \u2462. \u9002\u7528\u573a\u666f：\u9002\u7528\u4e8e\u7b80\u5355\u7684\u573a\u666f，\u7279\u522b\u662f\u5f53\u4e8b\u4ef6\u5904\u7406\u8f83\u5feb\u65f6\u3002<\/p>\n<\/p>\n

2.\u8fb9\u7f18\u89e6\u53d1（Edge-Triggered，ET）<\/h4>\n

\u8fb9\u7f18\u89e6\u53d1\u53ea\u5728\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u72b6\u6001\u53d1\u751f\u53d8\u5316\u65f6\u901a\u77e5\u5e94\u7528\u7a0b\u5e8f\u4e00\u6b21\u3002<\/p>\n

\u2460.\u00a0\u89e6\u53d1\u6761\u4ef6：\u53ea\u6709\u5f53\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u72b6\u6001\u4ece\u975e\u5c31\u7eea\u53d8\u4e3a\u5c31\u7eea\u65f6，epoll_wait\u624d\u4f1a\u8fd4\u56de\u8be5\u4e8b\u4ef6\u3002 \u2461. \u4e8b\u4ef6\u5904\u7406：\u5e94\u7528\u7a0b\u5e8f\u9700\u8981\u4e00\u6b21\u6027\u5904\u7406\u6240\u6709\u5c31\u7eea\u7684\u4e8b\u4ef6，\u56e0\u4e3a\u540e\u7eed\u5373\u4f7f\u4e8b\u4ef6\u4ecd\u7136\u5c31\u7eea，\u4e5f\u4e0d\u4f1a\u518d\u6b21\u901a\u77e5\u3002 \u2462. \u9002\u7528\u573a\u666f：\u9002\u7528\u4e8e\u9ad8\u5e76\u53d1\u573a\u666f，\u56e0\u4e3a\u5b83\u51cf\u5c11\u4e86\u4e8b\u4ef6\u901a\u77e5\u7684\u6b21\u6570，\u4ece\u800c\u63d0\u9ad8\u4e86\u6027\u80fd\u3002<\/p>\n<\/p>\n

\u4e94\u3001\u7a0b\u5e8f\u793a\u4f8b<\/h3>\n

1.\u7ba1\u9053\u4e2d\u8fd0\u7528epoll<\/h4>\n

#include <stdio.h>
\n#include <string.h>
\n#include <sys\/epoll.h>
\n#include <unistd.h><\/p>\n

int main()
\n{
\n int fd[2];
\n pid_t pid;
\n pipe(fd);
\n pid = fork();
\n if(pid < 0)
\n perror("fork");
\n else if(pid == 0){
\n close(fd[0]);
\n char buf[5];
\n char ch = 'a';
\n while(1){
\n sleep(3);
\n memset(buf,ch++,sizeof(buf));
\n write(fd[1], buf, 5);
\n }
\n }
\n else{
\n close(fd[1]);
\n int epfd = epoll_create(1);
\n struct epoll_event ev, evs[1];
\n ev.data.fd = fd[0];
\n ev.events = EPOLLIN;
\n epoll_ctl(epfd, EPOLL_CTL_ADD, fd[0], &ev);
\n while(1){
\n int n = epoll_wait(epfd, evs, 1, -1);
\n if(n == 1){
\n char buf[128] = "";
\n int ret = read(fd[0], buf, sizeof(buf));
\n if(ret <= 0){
\n close(fd[0]);
\n epoll_ctl(epfd, EPOLL_CTL_DEL,fd[0], &ev);
\n break;
\n }
\n else{
\n printf("%s\\\\n", buf);
\n }
\n }
\n }
\n }<\/p>\n

return 0;
\n} <\/p>\n

2.epoll\u9ad8\u5e76\u53d1\u670d\u52a1\u5668<\/h4>\n

\u2460.\u521b\u5efa\u5957\u63a5\u5b57\u3002Ifd = tcp4bind=>socket, bind \u2461.\u5957\u63a5\u5b57\u76d1\u542c\u3002Listen \u2462.\u521b\u5efa\u6811\u3002epfd = epoll_create \u2463.\u5c06Ifd\u4e0a\u6811\u3002\u521d\u59cb\u5316ev\u3001epoll_ctl \u2464.\u76d1\u542cwhile｛ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u2465.\u76d1\u542cepfd\u3002nready = epoll_wait \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u2466.\u5982\u679c\u8fd4\u56de\u503cnready＜0，break\u8df3\u51fa\u5faa\u73af\u3002 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u2467.\u5982\u679c\u8fd4\u56de\u503cnready =0，contine\u7ee7\u51fa\u7eed\u5faa\u73af， \u00a0 \u00a0 \u00a0 \u00a0 \u2468. \u5982\u679c\u8fd4\u56de\u503cnready>0，\u8bf4\u660eepfd\u76d1\u542c\u5230\u53d8\u5316 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u2469\u00a0. \u5982\u679c\u662fcfd\u53d8\u5316，\u8fde\u63a5cfd\u3002Accept\u246a.cfd\u4e0a\u6811\u3002epoll_ct \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u246b.\u5982\u679c\u662fcfd\u53d8\u5316 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u246c.\u68c0\u67e5\u6570\u636ewhile(1){ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u246d.\u8bfb\u5ba2\u6237\u7aef\u7684\u6570\u636en = read() \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u246e.\u5982\u679cn == 0，\u5219\u5173\u95edcfd，\u5e76\u4e14\u4e0b\u6811 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u246f.\u5982\u679cn>0,\u4f7f\u7528write\u5c06\u65e5\u5fd7\u6253\u5370\u5230\u7ec8\u7aef\u9875\u9762，\u5e76write\u5199\u56de\u5ba2\u6237\u7aef\u3002 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0} \u00a0 \u00a0}<\/p>\n

#include <stdio.h>
\n#include <unistd.h>
\n#include <string.h>
\n#include <error.h>
\n#include <fcntl.h>
\n#include "wrap.h"
\n#include <sys\/epoll.h><\/p>\n

int main()
\n{<\/p>\n

\/\/\u521b\u5efa\u5957\u63a5\u5b57
\n int lfd = tcp4bind(8000, NULL);
\n \/\/\u5957\u63a5\u5b57\u76d1\u542c
\n Listen(lfd, 128);
\n \/\/\u521b\u5efa\u6811
\n int epfd = epoll_create(1);
\n \/\/\u5c06lfd\u4e0a\u6811
\n struct epoll_event ev, evs[1024];
\n ev.data.fd = lfd;
\n ev.events = EPOLLIN;
\n epoll_ctl(epfd, EPOLL_CTL_ADD, lfd, &ev);
\n \/\/\u76d1\u542c
\n while(1){
\n int nready = epoll_wait(epfd, evs, 1024, -1);
\n printf("epoll_wait——- \\\\n");
\n if(nready < 0){
\n perror("");
\n break;
\n }
\n else if(nready == 0){
\n continue;
\n }
\n else{
\n int i;
\n for(i = 0; i <nready; i++){
\n \/\/lfd\u53d8\u5316
\n if(evs[i].data.fd == lfd && evs[i].events & EPOLLIN){
\n struct sockaddr_in cliaddr;
\n char ip[16] = "";
\n socklen_t len = sizeof(cliaddr);
\n int cfd = Accept(lfd,(struct sockaddr *)&cliaddr, &len);
\n printf("new client ip = %s, port = %d\\\\n", inet_ntop(AF_INET, &cliaddr.sin_addr.s_addr, ip, 16), ntohs(cliaddr.sin_port));
\n \/\/\u8bbe\u7f6ecfd\u975e\u5835\u585e
\n int flags = fcntl(cfd, F_GETFL);
\n flags |= O_NONBLOCK;
\n fcntl(cfd, F_SETFL,flags);
\n \/\/cfd\u4e0a\u6811
\n ev.data.fd = cfd;
\n ev.events = EPOLLIN | EPOLLET; \/\/\u8bbe\u7f6e\u4e3a\u8fb9\u7f18\u89e6\u53d1
\n epoll_ctl(epfd, EPOLL_CTL_ADD, cfd, &ev);
\n }
\n else if(evs[i].events & EPOLLIN){
\n \/\/cfd\u53d8\u5316
\n while(1){
\n char buf[4] = "";
\n \/\/\u5982\u679c\u8bfb\u4e00\u4e2a\u7f13\u51b2\u533a,\u7f13\u51b2\u533a\u6ca1\u6709\u6570\u636e,\u5982\u679c\u662f\u5e26\u963b\u585e,\u5c31\u963b\u585e\u7b49\u5f85,\u5982\u679c
\n \/\/\u662f\u975e\u963b\u585e,\u8fd4\u56de\u503c\u7b49\u4e8e-1,\u5e76\u4e14\u4f1a\u5c06errno \u503c\u8bbe\u7f6e\u4e3aEAGAIN
\n int n = read(evs[i].data.fd, buf, sizeof(buf));
\n if(n < 0){
\n if(errno == EAGAIN){
\n break;
\n }<\/p>\n

\/\/\u666e\u901a\u9519\u8bef
\n perror("");
\n close(evs[i].data.fd);\/\/\u5173\u95edcfd
\n epoll_ctl(epfd, EPOLL_CTL_DEL, evs[i].data.fd, &evs[i]);\/\/\u5c06cfd\u4e0b\u6811
\n break;
\n }
\n else if(n == 0){
\n printf("client colse\\\\n");
\n close(evs[i].data.fd);\/\/\u5173\u95edcfd
\n epoll_ctl(epfd, EPOLL_CTL_DEL, evs[i].data.fd, &evs[i]);\/\/\u5c06cfd\u4e0b\u6811
\n break;
\n }
\n else{
\n write(STDOUT_FILENO, buf, 4);
\n write(evs[i].data.fd, buf, n);
\n }
\n }
\n }
\n }
\n }
\n }
\n return 0;
\n} <\/p>\n

\u516d\u3001epoll\u673a\u5236<\/h2>\n

\u53c2\u8003：<\/p>\n

Linux epoll\u5b8c\u5168\u56fe\u89e3，\u5f7b\u5e95\u641e\u61c2epoll\u673a\u5236 – \u77e5\u4e4e<\/p>\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb985\u6b21\uff0c\u70b9\u8d5e21\u6b21\uff0c\u6536\u85cf19\u6b21\u3002\u662f Linux \u7cfb\u7edf\u4e2d\u7528\u4e8e\u521b\u5efa\u4e00\u4e2aepoll\u5b9e\u4f8b\u7684\u7cfb\u7edf\u8c03\u7528\u3002epoll\u662f\u4e00\u79cd\u9ad8\u6548\u7684 I\/O \u4e8b\u4ef6\u901a\u77e5\u673a\u5236\uff0c\u901a\u5e38\u7528\u4e8e\u9ad8\u6027\u80fd\u7f51\u7edc\u670d\u52a1\u5668\u6216\u9700\u8981\u5904\u7406\u5927\u91cf\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u573a\u666f\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,58,43,470],"topic":[],"class_list":["post-10679","post","type-post","status-publish","format-standard","hentry","category-server","tag-c","tag-linux","tag-43","tag-470"],"yoast_head":"\n\u9ad8\u5e76\u53d1\u670d\u52a1\u5668-epoll\u76f8\u5173\u51fd\u6570 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/10679.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u9ad8\u5e76\u53d1\u670d\u52a1\u5668-epoll\u76f8\u5173\u51fd\u6570 - 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