{"id":19232,"date":"2025-04-19T01:33:34","date_gmt":"2025-04-18T17:33:34","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/19232.html"},"modified":"2025-04-19T01:33:34","modified_gmt":"2025-04-18T17:33:34","slug":"%e3%80%8e-linux-%e3%80%8f%e9%ab%98%e7%ba%a7io-%e4%b8%89-epoll%e6%a8%a1%e5%9e%8b%e7%9a%84%e5%b0%81%e8%a3%85%e4%b8%8eepollechoserver%e6%9c%8d%e5%8a%a1%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/19232.html","title":{"rendered":"\u300e Linux \u300f\u9ad8\u7ea7IO (\u4e09) - Epoll\u6a21\u578b\u7684\u5c01\u88c5\u4e0eEpollEchoServer\u670d\u52a1\u5668"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\n<ul>\n<li>\u524d\u60c5\u63d0\u8981<\/li>\n<li>Epoll \u7684\u5c01\u88c5<\/li>\n<li>\n<ul>\n<li>Epoll\u5c01\u88c5\u5b8c\u6574\u4ee3\u7801(\u4f9b\u53c2\u8003)<\/li>\n<\/ul>\n<\/li>\n<li>Epoll Echo Server<\/li>\n<li>\n<ul>\n<li>Epoll Echo Server \u6d4b\u8bd5\u53ca\u5b8c\u6574\u4ee3\u7801<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>\u524d\u60c5\u63d0\u8981<\/h3>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u5728\u4e0a\u4e00\u7bc7\u535a\u5ba2\u300e Linux \u300f\u9ad8\u7ea7IO (\u4e8c) &#8211; \u591a\u8def\u8f6c\u63a5\u4ecb\u7ecd\u5e76\u5b8c\u6210\u4e86\u4e24\u79cd\u591a\u8def\u8f6c\u63a5\u65b9\u6848\u7684\u4ecb\u7ecd\u4ee5\u53ca\u5bf9\u5e94\u591a\u8def\u8f6c\u63a5\u65b9\u6848\u4ee3\u7801\u7684\u7f16\u5199,\u5206\u522b\u4e3aSelectServer\u670d\u52a1\u5668\u4e0ePollServer\u670d\u52a1\u5668;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u540c\u65f6\u5728\u8be5\u7bc7\u535a\u5ba2\u4e2d\u4ecb\u7ecd\u4e86\u7ee7select()\u4e0epoll()\u591a\u8def\u8f6c\u63a5\u65b9\u6848\u4e4b\u540e\u6240\u63d0\u51fa\u7684Epoll\u591a\u8def\u8f6c\u63a5\u65b9\u6848;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u6b64\u5904\u4e0d\u518d\u8d58\u8ff0;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u800c\u5728\u4e0a\u6587\u4e2d\u5e76\u672a\u5bf9Epoll\u591a\u8def\u8f6c\u63a5\u65b9\u6848\u7684\u4ee3\u7801\u8fdb\u884c\u7f16\u5199,\u6b64\u7bc7\u535a\u5ba2\u8fdb\u884c\u8865\u5145;<\/font><\/p>\n<hr \/>\n<h3>Epoll \u7684\u5c01\u88c5<\/h3>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u5728\u4e0a\u4e00\u7bc7\u535a\u5ba2\u4e2d\u5bf9Epoll\u591a\u8def\u8f6c\u63a5\u65b9\u6848\u8fdb\u884c\u4e86\u4ecb\u7ecd;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u672c\u8d28\u4e0aEpoll\u901a\u8fc7\u5185\u6838\u6240\u7ef4\u62a4\u7684\u4e09\u79cd\u673a\u5236\u5b9e\u73b0\u591a\u8def\u8f6c\u63a5\u65b9\u6848;<\/font><\/p>\n<ul>\n<li><font face=\"\u534e\u6587\u4e2d\u5b8b\"> \u7cfb\u7edf\u5185\u6838\u5185\u90e8\u4e3aEpoll\u6240\u7ef4\u62a4\u7684\u7684\u7ea2\u9ed1\u6811<\/font><\/li>\n<li><font face=\"\u534e\u6587\u4e2d\u5b8b\"> \u7cfb\u7edf\u5185\u6838\u5185\u90e8\u4e3aEpoll\u5df2\u5c31\u7eea\u4e8b\u4ef6\u6240\u7ef4\u62a4\u7684\u5c31\u7eea\u961f\u5217<\/font><\/li>\n<li><font face=\"\u534e\u6587\u4e2d\u5b8b\"> \u7cfb\u7edf\u5185\u6838\u5185\u90e8\u56e0Epoll\u6240\u63d0\u4f9b\u7684\u56de\u8c03\u673a\u5236<\/font><\/li>\n<\/ul>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u5176\u4e2d\u7ea2\u9ed1\u6811\u7528\u6765\u7ba1\u7406\u6b63\u5728\u88ab\u76d1\u542c\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26,\u5c31\u7eea\u961f\u5217\u7528\u6765\u7ba1\u7406\u5df2\u89e6\u53d1\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26,\u56de\u8c03\u673a\u5236\u7528\u4e8e\u68c0\u6d4b\u5e76\u63a8\u9001\u4e8b\u4ef6\u89e6\u53d1\u7684\u7ed3\u679c\u5230\u5c31\u7eea\u961f\u5217\u4e2d;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u5176\u5bf9\u5e94\u7684\u6838\u5fc3\u51fd\u6570\u4e3aepoll_create(),epoll_wait()\u4e0eepoll_ctl();<\/font><\/p>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u4e0e\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u76f8\u5e94:<\/font><\/p>\n<ul>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> epoll_create()<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u521b\u5efaEpoll\u6a21\u578b\u5e76\u8fd4\u56deEpoll\u6a21\u578b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> epoll_ctl()<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u63a7\u5236\u5185\u6838\u4e2d\u4e3aEpoll\u6240\u7ef4\u62a4\u7684\u7ea2\u9ed1\u6811\u7684\u589e\u5220\u6539\u64cd\u4f5c;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> epoll_wait()<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u7528\u4e8e\u8fdb\u884c\u7b49\u5f85,\u5e76\u8fd4\u56de\u5c31\u7eea\u961f\u5217\u4e2d\u76f8\u5e94\u6570\u91cf\u7684\u5c31\u7eea\u4e8b\u4ef6\u7ed9\u7528\u6237\u63d0\u524d\u51c6\u5907\u7684\u7a7a\u95f4,\u672c\u8d28\u662f\u5173\u5fc3\u5c31\u7eea\u961f\u5217\u672c\u8eab;<\/font><\/p>\n<\/li>\n<\/ul>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> Epoll\u7684\u51fd\u6570\u8f83\u4e3a\u5206\u6563,\u4e3a\u7b80\u5316Epoll\u64cd\u4f5c,\u53ef\u4ee5\u5bf9Epoll\u6a21\u578b\u8fdb\u884c\u5c01\u88c5;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u6574\u4f53\u7684\u5c01\u88c5\u91c7\u7528RAII(\u6784\u9020\u5373\u521d\u59cb\u5316,\u6790\u6784\u5373\u91ca\u653e)\u7684\u98ce\u683c;<\/font><\/p>\n<ul>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> \u6574\u4f53\u7ed3\u6784<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u4e3a\u4e86\u9632\u6b62Epoll\u6a21\u578b\u5c01\u88c5\u7c7b\u88ab\u62f7\u8d1d,\u53ef\u4ee5\u5c06\u62f7\u8d1d\u6784\u9020\u4e0e\u62f7\u8d1d\u8d4b\u503c\u8bbe\u7f6e\u4e3adelete,\u6216\u8005\u521b\u5efa\u4e0d\u53ef\u88ab\u62f7\u8d1d\u7684\u57fa\u7c7b(\u540c\u6837\u8bbe\u4e3adelete),\u5c06Epoll\u5c01\u88c5\u8bbe\u7f6e\u4e3a\u5176\u6d3e\u751f\u7c7b\u4ee5\u9632\u6b62Epoll\u5c01\u88c5\u7c7b\u88ab\u62f7\u8d1d;<\/font><\/p>\n<ul>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> nocopy.hpp<\/font><\/p>\n<p> <span class=\"token comment\">\/* nocopy.hpp *\/<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">nocopy<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">nocopy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">nocopy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> nocopy <span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">delete<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> nocopy<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> nocopy<span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">delete<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token operator\">~<\/span><span class=\"token function\">nocopy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> Epoller.hpp<\/font><\/p>\n<p> <span class=\"token comment\">\/* Epoller.hpp *\/<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Epoller<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">nocopy<\/span> <span class=\"token comment\">\/\/ \u9632\u6b62\u62f7\u8d1d \u7ee7\u627f\u9632\u62f7\u8d1d\u7c7b class nocopy<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">Epoller<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token operator\">~<\/span><span class=\"token function\">Epoller<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> _epfd<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ Epoll \u7684\u63cf\u8ff0\u7b26<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> _timeout <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3000<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<\/ul>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u6b64\u5904\u4f7f\u7528\u7ee7\u627f\u9632\u62f7\u8d1d\u7c7b\u7684\u65b9\u5f0f\u8fdb\u884c\u9632\u62f7\u8d1d;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u4e3b\u8981\u5728\u7c7b\u4e2d\u5b9a\u4e49\u4e86\u4e24\u4e2a\u6210\u5458\u53d8\u91cf,\u5f53epoll_create()\u88ab\u8c03\u7528\u65f6,\u5c06\u8fd4\u56de\u4e00\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26,\u8fd9\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u662fEpoll\u6a21\u578b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26,\u5e94\u5f53\u8fdb\u884c\u4fdd\u5b58;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u6b64\u5916_timeout\u6210\u5458\u4e3a\u9ed8\u8ba4\u5b9a\u4e49\u7684timeout\u65f6\u95f4,\u53ef\u914c\u60c5\u8c03\u6574;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> RAII<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> RAII\u4e3a\u6784\u9020\u5373\u521d\u59cb\u5316,\u6790\u6784\u5373\u91ca\u653e;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u56e0\u6b64Epoll\u6a21\u578b\u521b\u5efa\u4e0e\u91ca\u653e\u9700\u8981\u5206\u522b\u5728\u6784\u9020\u51fd\u6570\u4e0e\u6790\u6784\u51fd\u6570\u4e2d;<\/font><\/p>\n<p> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Epoller<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">nocopy<\/span> <span class=\"token comment\">\/\/ \u9632\u6b62\u62f7\u8d1d \u7ee7\u627f\u9632\u62f7\u8d1d\u7c7b class nocopy<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> _size <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1024<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">Epoller<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> size <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">128<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _epfd <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">epoll_create<\/span><span class=\"token punctuation\">(<\/span>_size<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u521b\u5efa epoll \u6a21\u578b<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_epfd <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span>             <span class=\"token comment\">\/\/ \u521b\u5efa\u5931\u8d25<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">lg<\/span><span class=\"token punctuation\">(<\/span>FATAL<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;epoll_create error: %s&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">strerror<\/span><span class=\"token punctuation\">(<\/span>errno<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">else<\/span> <span class=\"token comment\">\/\/ \u521b\u5efa\u6210\u529f<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">lg<\/span><span class=\"token punctuation\">(<\/span>INFO<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;epoll_create sucess, fd: %d&#034;<\/span><span class=\"token punctuation\">,<\/span> _epfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u521b\u5efa\u6210\u529f\u67e5\u770b\u5bf9\u5e94\u6587\u4ef6\u63cf\u8ff0\u7b26<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token operator\">~<\/span><span class=\"token function\">Epoller<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_epfd <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>_epfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> _epfd<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ Epoll \u7684\u63cf\u8ff0\u7b26<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> _timeout <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3000<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u7531\u4e8eepoll_create()\u7684\u53c2\u6570\u5df2\u7ecf\u88ab\u5e9f\u5f03,\u56e0\u6b64\u8be5\u5904\u53c2\u6570\u8bbe\u7f6e\u4e3a1024(\u65e0\u610f\u4e49);<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u6790\u6784\u65f6\u53ea\u9700\u5173\u95ed\u5bf9\u5e94Epoll\u6a21\u578b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u5373\u53ef;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> epoll_wait()\u5c01\u88c5<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> epoll_wait()\u51fd\u6570\u5728Epoll\u6a21\u578b\u4e2d\u7528\u6765\u5173\u5fc3\u5c31\u7eea\u961f\u5217\u4e2d\u662f\u5426\u5b58\u5728\u5df2\u5c31\u7eea\u4e8b\u4ef6;<\/font><\/p>\n<p> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Epoller<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">nocopy<\/span> <span class=\"token comment\">\/\/ \u9632\u6b62\u62f7\u8d1d \u7ee7\u627f\u9632\u62f7\u8d1d\u7c7b class nocopy<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token function\">EpollerWait<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">epoll_event<\/span> revents<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> num<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u7b49\u5f85\u64cd\u4f5c\u5728Epoll\u6a21\u578b\u4e2d\u4e3a\u5c06\u5c31\u7eea\u961f\u5217\u4e2d\u7684<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u5df2\u5c31\u7eea\u4e8b\u4ef6\u6587\u4ef6\u63cf\u8ff0\u7b26\u62f7\u8d1d\u81f3\u7528\u6237\u9884\u8bbe\u7a7a\u95f4<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">epoll_wait<\/span><span class=\"token punctuation\">(<\/span>_epfd<span class=\"token punctuation\">,<\/span> revents<span class=\"token punctuation\">,<\/span> num<span class=\"token punctuation\">,<\/span> _timeout<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> n<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> _epfd<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ Epoll \u7684\u63cf\u8ff0\u7b26<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> _timeout <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3000<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5bf9\u5e94\u7684\u5c06\u5176\u5c01\u88c5\u4e3aEpollerWait()\u51fd\u6570,\u5728\u53c2\u6570\u4e0a\u9700\u8981\u4f20\u9012\u4e00\u4e2a\u7528\u6237\u9884\u8bbe\u7684\u7a7a\u95f4;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u8fd9\u6bb5\u7528\u6237\u9884\u8bbe\u7684\u7a7a\u95f4\u7528\u4e8eepoll_wait()\u51fd\u6570\u5c06\u5c31\u7eea\u961f\u5217\u4e2d\u5df2\u5c31\u7eea\u7684\u4e8b\u4ef6\u62f7\u8d1d\u81f3\u7528\u6237\u5c42;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u4f20\u5165\u7684num\u8868\u793a\u7528\u6237\u9884\u8bbe\u7a7a\u95f4\u6bcf\u6b21\u80fd\u591f\u63a5\u53d7\u591a\u5c11\u5c31\u7eea\u961f\u5217\u4e2d\u7684\u5df2\u5c31\u7eea\u4e8b\u4ef6;<\/font><\/p>\n<ul>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> Ps:<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u5185\u6838\u5c31\u7eea\u961f\u5217\u4e2d\u5df2\u5c31\u7eea\u4e8b\u4ef6\u5927\u4e8e\u7528\u6237\u6240\u9884\u8bbe\u7a7a\u95f4\u65f6,\u5c31\u7eea\u961f\u5217\u672c\u6b21\u53ea\u4f1a\u4f20\u9012\u7528\u6237\u9884\u8bbe\u7a7a\u95f4\u54cd\u5e94\u6570\u91cf\u7684\u5c31\u7eea\u4e8b\u4ef6,\u4f59\u4e0b\u7684\u5c31\u7eea\u4e8b\u4ef6\u5c06\u7ee7\u7eed\u5b58\u653e\u81f3\u5185\u6838\u5c31\u7eea\u961f\u5217\u5f53\u4e2d;<\/font><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> epoll_ctl()\u5c01\u88c5<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> epoll_ctl()\u51fd\u6570\u5728Epoll\u6a21\u578b\u4e2d,\u4e3b\u8981\u7528\u4e8e\u5bf9\u5185\u6838\u7ea2\u9ed1\u6811\u8fdb\u884c\u589e\u5220\u6539\u64cd\u4f5c;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5176\u51fd\u6570\u58f0\u660e\u4e3a:<\/font><\/p>\n<p>        <span class=\"token keyword\">int<\/span> <span class=\"token function\">epoll_ctl<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> epfd<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> op<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> fd<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">epoll_event<\/span> <span class=\"token operator\">*<\/span>event<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u64cd\u4f5c\u6839\u636e\u53c2\u6570\u7684\u4f20\u9012\u4e3b\u8981\u5206\u4e3a\u4e24\u79cd:<\/font><\/p>\n<ul>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> \u5220\u9664\u64cd\u4f5c<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u64cd\u4f5c\u4e3a\u5220\u9664\u64cd\u4f5c\u65f6,\u53c2\u6570event\u4e0d\u9700\u8981\u4f20\u53c2;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> \u589e\u52a0\/\u4fee\u6539\u64cd\u4f5c<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u64cd\u4f5c\u4e0d\u4e3a\u5220\u9664\u64cd\u4f5c\u65f6,\u53c2\u6570\u90fd\u9700\u8981\u586b\u5199,\u5176\u4e2dop\u7528\u4e8e\u8868\u660e\u5177\u4f53\u64cd\u4f5c,\u5982EPOLL_CTL_MOD\u4fee\u6539\u64cd\u4f5c\u6216EPOLL_CTL_ADD\u589e\u52a0\u64cd\u4f5c;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> event\u8868\u793a\u64cd\u4f5c\u6240\u5173\u5fc3\u7684\u5177\u4f53\u4e8b\u4ef6\u4ee5\u53ca\u5bf9\u5e94\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26(\u4ee5\u7ed3\u6784\u4f53\u5f62\u5f0f\u5b58\u50a8);<\/font><\/p>\n<\/li>\n<\/ul>\n<p> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Epoller<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">nocopy<\/span> <span class=\"token comment\">\/\/ \u9632\u6b62\u62f7\u8d1d \u7ee7\u627f\u9632\u62f7\u8d1d\u7c7b class nocopy<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> _size <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1024<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token function\">EpollerUpdate<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> op<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> sock<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">uint32_t<\/span> event<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>op <span class=\"token operator\">&#061;&#061;<\/span> EPOLL_CTL_DEL<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u5220\u9664\u64cd\u4f5c<\/span><br \/>\n            n <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">epoll_ctl<\/span><span class=\"token punctuation\">(<\/span>_epfd<span class=\"token punctuation\">,<\/span> op<span class=\"token punctuation\">,<\/span> sock<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5220\u9664<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>n <span class=\"token operator\">!&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token function\">lg<\/span><span class=\"token punctuation\">(<\/span>WARNING<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;delete epoll_ctl error&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">else<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u975e\u5220\u9664\u64cd\u4f5c\u5373\u65b0\u589e\u6216\u4fee\u6539<\/span><br \/>\n            <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">epoll_event<\/span> ev<span class=\"token punctuation\">;<\/span><br \/>\n            ev<span class=\"token punctuation\">.<\/span>events <span class=\"token operator\">&#061;<\/span> event<span class=\"token punctuation\">;<\/span><br \/>\n            ev<span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">.<\/span>fd <span class=\"token operator\">&#061;<\/span> sock<span class=\"token punctuation\">;<\/span><\/p>\n<p>            n <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">epoll_ctl<\/span><span class=\"token punctuation\">(<\/span>_epfd<span class=\"token punctuation\">,<\/span> op<span class=\"token punctuation\">,<\/span> sock<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>ev<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6ce8\u518c\u8fdb\u5185\u6838<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>n <span class=\"token operator\">!&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token function\">lg<\/span><span class=\"token punctuation\">(<\/span>WARNING<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;EpollerUpdate Error: %s&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">strerror<\/span><span class=\"token punctuation\">(<\/span>errno<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> n<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> _epfd<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ Epoll \u7684\u63cf\u8ff0\u7b26<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> _timeout <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3000<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<\/ul>\n<hr \/>\n<h4>Epoll\u5c01\u88c5\u5b8c\u6574\u4ee3\u7801(\u4f9b\u53c2\u8003)<\/h4>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> [\u534a\u4ecb\u83bd\u592b &#8211; Gitee For half-intermediate-mangfu\/IO\/AdvancedIO\/EpollEncapsulation]<\/font><\/p>\n<hr \/>\n<h3>Epoll Echo Server<\/h3>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u540c\u6837\u53ef\u4ee5\u5229\u7528Epoll\u5b9e\u73b0\u4e00\u4e2aEcho\u670d\u52a1\u5668;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u4e14\u5176\u5b9e\u73b0\u65b9\u5f0f\u8f83Select\u4e0ePoll\u4e24\u79cd\u591a\u8def\u8f6c\u63a5\u65b9\u6848\u8fd8\u8981\u7b80\u5355(\u5c24\u5176\u662f\u5728\u5bf9Epoll\u8fdb\u884c\u5c01\u88c5\u540e);<\/font><\/p>\n<ul>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> \u6574\u4f53\u7ed3\u6784\u4e0e\u521d\u59cb\u5316<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u540c\u6837\u7684Epoll\u591a\u8def\u8f6c\u63a5\u7684Echo\u670d\u52a1\u5668\u4f5c\u4e3a\u4e00\u6b3e\u670d\u52a1\u5668\u4e3b\u8981\u5206\u4e3a\u521d\u59cb\u5316\u4e0e\u8fd0\u884c\u4e24\u4e2a\u90e8\u5206;<\/font><\/p>\n<p> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">uint32_t<\/span> EVENT_IN <span class=\"token operator\">&#061;<\/span> EPOLLIN<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token keyword\">uint32_t<\/span> EVENT_OUT <span class=\"token operator\">&#061;<\/span> EPOLLOUT<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token keyword\">uint32_t<\/span> EVENT_DEL_OP <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EpollServer<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">nocopy<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">EpollServer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">uint16_t<\/span> port<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ \u6b64\u5904\u4f7f\u7528\u667a\u80fd\u6307\u9488 \u56e0\u6b64\u5728\u521d\u59cb\u5316\u5217\u8868\u4e2d\u4f7f\u7528 new \u5b9e\u4f8b\u5316<\/span><br \/>\n        <span class=\"token operator\">:<\/span> <span class=\"token function\">_port<\/span><span class=\"token punctuation\">(<\/span>port<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">_listensocket<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> NetSocket<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">_epoller<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> Epoller<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">void<\/span> <span class=\"token function\">Init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u6b63\u5e38\u7684\u521b\u5efa \u7ed1\u5b9a \u76d1\u542c\u4e09\u4ef6\u5957<\/span><br \/>\n        _listensocket<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">Socket<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _listensocket<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">Bind<\/span><span class=\"token punctuation\">(<\/span>_port<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _listensocket<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">Listen<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token function\">lg<\/span><span class=\"token punctuation\">(<\/span>INFO<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Create listen socket sucess, fd: %d&#034;<\/span><span class=\"token punctuation\">,<\/span> _listensocket<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">GetFd<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">void<\/span> <span class=\"token function\">Start<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token operator\">~<\/span><span class=\"token function\">EpollServer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u6790\u6784\u51fd\u6570\u5173\u95ed\u5957\u63a5\u5b57 (\u5185\u7f6e\u5c01\u88c5)<\/span><br \/>\n        _listensocket<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">Close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>shared_ptr<span class=\"token operator\">&lt;<\/span>NetSocket<span class=\"token operator\">&gt;<\/span> _listensocket<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4f7f\u7528\u667a\u80fd\u6307\u9488<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>shared_ptr<span class=\"token operator\">&lt;<\/span>Epoller<span class=\"token operator\">&gt;<\/span> _epoller<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">uint16_t<\/span> _port<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u65e2\u7136\u662f\u7f51\u7edc\u670d\u52a1\u5668\u90a3\u4e48\u5fc5\u987b\u4f7f\u7528\u5bf9\u5e94\u7684\u7f51\u7edc\u63a5\u53e3,\u540c\u6837\u8fd9\u91cc\u4f7f\u7528\u9884\u5148\u5c01\u88c5\u8fc7\u7684Socket\u63a5\u53e3;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u6210\u5458\u53d8\u91cf\u4e3b\u8981\u4e3a\u5982\u4e0b:<\/font><\/p>\n<ul>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> _listensocket<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u8868\u793a\u76d1\u542c\u5957\u63a5\u5b57\u5bf9\u5e94\u7684\u5b9e\u4f8b,\u76d1\u542c\u5957\u63a5\u5b57\u7528\u6765\u76d1\u542c\u65b0\u8fde\u63a5\u7684\u5230\u6765;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> _epoller<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u8868\u793aEpoll\u6a21\u578b,\u6b64\u5904\u4f7f\u7528\u4e0a\u6587\u6240\u5c01\u88c5\u7684Epoll\u6a21\u578b;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> _port<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u8868\u793a\u76d1\u542c\u5957\u63a5\u5b57\u6240\u7ed1\u5b9a\u7684\u7aef\u53e3\u53f7;<\/font><\/p>\n<\/li>\n<\/ul>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u76d1\u542c\u5957\u63a5\u5b57\u4e0eEpoll\u6a21\u578b\u7686\u91c7\u7528\u667a\u80fd\u6307\u9488\u4f7f\u5176\u66f4\u52a0\u5b89\u5168\u4e0e\u4fbf\u5229;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5b9a\u4e49\u4e86\u4e09\u4e2auint32_t\u7c7b\u578b\u5e38\u91cf,\u4e3b\u8981\u56e0\u4e3a\u5728\u8be5\u7a0b\u5e8f\u4e2d\u4e3a\u914d\u5408Epoll\u6a21\u578b\u5c01\u88c5\u4e2d\u7684EpollerUpdate()\u51fd\u6570\u8fdb\u884c\u4f7f\u7528;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5206\u522b\u7528\u4e8e\u5173\u5fc3\u4e0e\u5224\u65ad,\u8bbe\u7f6e\u8bfb\u5199\u4e8b\u4ef6\u6216\u662f\u5220\u9664\u64cd\u4f5c;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5728\u521d\u59cb\u5316\u5217\u8868\u4e2d\u5206\u522b\u5bf9\u4e09\u4e2a\u6210\u5458\u53d8\u91cf\u8fdb\u884c\u521d\u59cb\u5316,\u5e76\u5728Init()\u4e2d\u5bf9\u76d1\u542c\u5957\u63a5\u5b57\u8fdb\u884c&#034;\u4e09\u677f\u65a7&#034;\u64cd\u4f5c,\u5373\u521b\u5efa\u5957\u63a5\u5b57,\u7ed1\u5b9a\u7aef\u53e3\u4e0e\u8bbe\u7f6e\u76d1\u542c;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5728\u6790\u6784\u51fd\u6570\u4e2d\u8c03\u7528\u5c01\u88c5\u7684Socket\u4e2d\u7684close()\u5bf9\u76d1\u542c\u5957\u63a5\u5b57\u6587\u4ef6\u63cf\u8ff0\u7b26\u8fdb\u884c\u5173\u95ed\u4ece\u800c\u5b8c\u6210\u76d1\u542c\u5957\u63a5\u5b57\u7684\u6e05\u7406;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> Start()\u8fd0\u884c\u51fd\u6570<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5728\u8be5\u51fd\u6570\u4e2d\u4e3b\u8981\u662f\u5faa\u73af\u8c03\u7528epoll_wait()\u51fd\u6570\u4f20\u5165\u7528\u6237\u9884\u8bbe\u7a7a\u95f4\u5b9e\u73b0\u5bf9\u591a\u4e2a\u4e8b\u4ef6\u8fdb\u884c\u76d1\u542c;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5728\u8bbe\u7f6etimeout\u7684\u60c5\u51b5\u4e0b,\u8be5\u51fd\u6570\u7684\u8fd4\u56de\u503c(n)\u6709\u4e09\u79cd\u60c5\u51b5:<\/font><\/p>\n<ul>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> n &gt; 0<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53n &gt; 0\u65f6\u8868\u793a\u6709n\u4e2a\u5c31\u7eea\u4e8b\u4ef6\u4ece\u5c31\u7eea\u961f\u5217\u88ab\u63a8\u9001\u81f3\u7528\u6237\u9884\u8bbe\u7a7a\u95f4\u4e2d;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> n &#061;&#061; 0<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53n &#061;&#061; 0\u65f6\u8868\u793atimeout\u65f6\u95f4\u5230\u671f,\u6ca1\u6709\u4e8b\u4ef6\u5c31\u7eea(\u5c31\u7eea\u961f\u5217\u4e2d\u6ca1\u6709\u5c31\u7eea\u4e8b\u4ef6,\u56e0\u6b64\u4e0d\u4f1a\u6709\u5c31\u7eea\u4e8b\u4ef6\u88ab\u63a8\u9001\u81f3\u7528\u6237\u9884\u8bbe\u7684\u4e8b\u4ef6\u7a7a\u95f4\u4e2d);<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> n &lt; 0<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53n &lt; 0\u65f6\u5219\u8868\u793a\u8be5\u51fd\u6570\u8c03\u7528\u5931\u8d25;<\/font><\/p>\n<\/li>\n<\/ul>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u7531\u4e8e\u5df2\u7ecf\u5bf9epoll_wait()\u51fd\u6570\u8fdb\u884c\u5c01\u88c5,\u56e0\u6b64\u53ea\u9700\u8c03\u7528Epoll\u6a21\u578b\u5b9e\u4f8b\u4e2d\u5bf9\u5e94\u7684\u6210\u5458\u51fd\u6570EpollerWait()\u5373\u53ef;<\/font><\/p>\n<p> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EpollServer<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">nocopy<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> _num <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">64<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u8868\u793a\u7528\u6237\u9884\u8bbe\u5c31\u7eea\u4e8b\u4ef6\u7a7a\u95f4\u5355\u6b21\u6700\u5927\u8bfb\u53d6\u5c31\u7eea\u4e8b\u4ef6\u6570\u91cf<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">Start<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u5728\u8fdb\u884c\u5faa\u73af\u524d \u7b2c\u4e00\u6b21\u8c03\u7528\u5fc5\u987b\u4fdd\u8bc1\u76d1\u542c\u5957\u63a5\u5b57\u88ab\u6dfb\u52a0\u81f3epoll\u5f53\u4e2d<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u8fd9\u91cc\u672c\u8d28\u662f\u5c06\u76d1\u542c\u5957\u63a5\u5b57\u4e0e\u5176\u6240\u5173\u5fc3\u7684\u4e8b\u4ef6\u6dfb\u52a0\u81f3\u5185\u6838epoll\u6a21\u578b\u7684\u7ea2\u9ed1\u6811\u5f53\u4e2d<\/span><br \/>\n        _epoller<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">EpollerUpdate<\/span><span class=\"token punctuation\">(<\/span>EPOLL_CTL_ADD<span class=\"token punctuation\">,<\/span> _listensocket<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">GetFd<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> EVENT_IN<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">epoll_event<\/span> revs<span class=\"token punctuation\">[<\/span>_num<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ \u8fd0\u884c\u8fc7\u7a0b\u4e2d\u91c7\u7528\u5faa\u73af<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> _epoller<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">EpollerWait<\/span><span class=\"token punctuation\">(<\/span>revs<span class=\"token punctuation\">,<\/span> _num<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token comment\">\/*<br \/>\n                n \u4e3a\u8fd4\u56de\u503c\u591a\u5c11\u4e2a<br \/>\n                \u6240\u4f20\u5165\u7684revs\u6570\u7ec4\u4e3a\u8f93\u51fa\u578b\u53c2\u6570<br \/>\n                _num\u8868\u793a\u6bcf\u6b21\u6700\u591a\u4ece\u5c31\u7eea\u961f\u5217\u4e2d\u53d6\u591a\u5c11\u4e2a<br \/>\n            *\/<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>n <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ \u8868\u6709\u4e8b\u4ef6\u5c31\u7eea<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token function\">Dispatcher<\/span><span class=\"token punctuation\">(<\/span>revs<span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fdb\u884c\u4e8b\u4ef6\u6d3e\u53d1<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>n <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token function\">lg<\/span><span class=\"token punctuation\">(<\/span>INFO<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;time out&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">else<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token function\">lg<\/span><span class=\"token punctuation\">(<\/span>WARNING<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;EpollerWait error&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>shared_ptr<span class=\"token operator\">&lt;<\/span>NetSocket<span class=\"token operator\">&gt;<\/span> _listensocket<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4f7f\u7528\u667a\u80fd\u6307\u9488<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>shared_ptr<span class=\"token operator\">&lt;<\/span>Epoller<span class=\"token operator\">&gt;<\/span> _epoller<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">uint16_t<\/span> _port<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5728\u8be5\u51fd\u6570\u4e2d\u8bbe\u7f6e\u4e86\u4e00\u4e2a_num &#061; 64\u7684\u5e38\u91cf\u7528\u4e8e\u8bbe\u7f6e\u7528\u6237\u9884\u8bbe\u7a7a\u95f4(\u6570\u7ec4)\u7684\u5927\u5c0f;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u7528\u6237\u9884\u8bbe\u7a7a\u95f4\u53ef\u76f4\u63a5\u91c7\u7528struct epoll_event\u7ed3\u6784\u4f53\u6570\u7ec4\u7684\u5f62\u5f0f;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u8fd9\u91cc\u8fd8\u6709\u4e00\u4e2a\u7ec6\u8282,\u7b2c\u4e00\u4e2a\u88ab\u5173\u5fc3\u4e8b\u4ef6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u5fc5\u7136\u662f\u76d1\u542c\u5957\u63a5\u5b57\u6587\u4ef6\u63cf\u8ff0\u7b26;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u76d1\u542c\u5957\u63a5\u5b57\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e8b\u4ef6\u5c31\u7eea\u540e,\u5bf9\u5e94\u7684\u4e8b\u4ef6\u5c06\u88ab\u63a8\u9001\u81f3\u7528\u6237\u9884\u8bbe\u7a7a\u95f4\u4e2d,\u4e4b\u540e\u624d\u80fd\u5c06\u76d1\u542c\u5957\u63a5\u5b57\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e2d\u7684\u65b0\u8fde\u63a5\u8fdb\u884c\u83b7\u53d6\u5e76\u5c06\u65b0\u8fde\u63a5fd\u6ce8\u518c\u8fdb\u7cfb\u7edf\u5185\u6838\u7684\u7ea2\u9ed1\u6811\u5f53\u4e2d(\u8bbe\u7f6e\u89c2\u5bdf);<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u56e0\u6b64\u5728\u7b2c\u4e00\u6b21\u8fdb\u884cEpollWait()\u524d\u9700\u8981\u8c03\u7528EpollerUpdate()\u5c06\u76d1\u542c\u5957\u63a5\u5b57\u6587\u4ef6\u63cf\u8ff0\u7b26\u6ce8\u518c\u8fdb\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e2d;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u6839\u636e\u4e0d\u540c\u8fd4\u56de\u503c\u8fdb\u884c\u4e0b\u4e00\u6b65\u51b3\u7b56,\u5f53\u8fd4\u56de\u503cn&gt;0\u65f6\u8868\u793an\u4e2a\u5c31\u7eea\u4e8b\u4ef6\u88ab\u63a8\u9001\u81f3\u7528\u6237\u9884\u8bbe\u7a7a\u95f4(\u6570\u7ec4)\u4e2d,\u4f46\u65e0\u6cd5\u5728\u5f53\u524d\u60c5\u51b5\u5224\u65ad\u6240\u5c31\u7eea\u4e8b\u4ef6\u5177\u4f53\u662f\u4ec0\u4e48\u4e8b\u4ef6,\u56e0\u6b64\u4e0b\u4e00\u6b65\u8fdb\u884c\u4e8b\u4ef6\u6d3e\u53d1Dispatcher();<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> Dispatcher()\u4e8b\u4ef6\u6d3e\u53d1<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u5bf9\u5e94epoll_wait()\u64cd\u4f5c\u8fd4\u56de\u503c&gt;0\u65f6\u8868\u793a\u6709\u5bf9\u5e94\u5c31\u7eea\u4e8b\u4ef6\u88ab\u63a8\u9001\u81f3\u7528\u6237\u5c42;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u4f46\u5e76\u4e0d\u6e05\u695a\u5c31\u7eea\u4e8b\u4ef6\u5177\u4f53\u5c5e\u6027,\u56e0\u6b64\u9700\u8981\u5bf9\u4e8b\u4ef6\u8fdb\u884c\u533a\u5206\u4e14\u6839\u636e\u5177\u4f53\u4e8b\u4ef6\u8fdb\u884c\u4e8b\u4ef6\u6d3e\u53d1;<\/font><\/p>\n<p> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EpollServer<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">nocopy<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">Dispatcher<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">epoll_event<\/span> revs<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> num<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ \u8fdb\u884c\u4e8b\u4ef6\u6d3e\u53d1<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> num<span class=\"token punctuation\">;<\/span> <span class=\"token operator\">&#043;&#043;<\/span>i<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">uint32_t<\/span> events <span class=\"token operator\">&#061;<\/span> revs<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>events<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u83b7\u53d6\u4e8b\u4ef6<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> fd <span class=\"token operator\">&#061;<\/span> revs<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>data<span class=\"token punctuation\">.<\/span>fd<span class=\"token punctuation\">;<\/span>         <span class=\"token comment\">\/\/ \u83b7\u53d6\u6587\u4ef6\u63cf\u8ff0\u7b26<\/span><\/p>\n<p>            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>events <span class=\"token operator\">&amp;<\/span> EVENT_IN<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ \u5176\u4ed6<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>fd <span class=\"token operator\">&#061;&#061;<\/span> _listensocket<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">GetFd<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ \u76d1\u542c\u5957\u63a5\u5b57\u8bfb\u4e8b\u4ef6\u5c31\u7eea<\/span><br \/>\n                <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token comment\">\/\/ Accepter() \u83b7\u53d6\u8fde\u63a5<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token keyword\">else<\/span> <span class=\"token comment\">\/\/ \u5176\u4ed6\u8bfb\u4e8b\u4ef6\u5c31\u7eea<\/span><br \/>\n                <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token comment\">\/\/ Recver() \u8bfb\u53d6\u6570\u636e<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>events <span class=\"token operator\">&amp;<\/span> EVENT_OUT<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ \u5199\u4e8b\u4ef6<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token comment\">\/\/ \u6682\u65f6\u4e0d\u8003\u8651<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">else<\/span> <span class=\"token comment\">\/\/ \u5176\u4ed6<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token comment\">\/\/ \u6682\u65f6\u4e0d\u8003\u8651<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>shared_ptr<span class=\"token operator\">&lt;<\/span>NetSocket<span class=\"token operator\">&gt;<\/span> _listensocket<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4f7f\u7528\u667a\u80fd\u6307\u9488<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>shared_ptr<span class=\"token operator\">&lt;<\/span>Epoller<span class=\"token operator\">&gt;<\/span> _epoller<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">uint16_t<\/span> _port<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5728\u8be5\u7a0b\u5e8f\u4e2d\u4e3b\u8981\u89c2\u5bdf\u8bfb\u5199\u4e24\u4e2a\u4e8b\u4ef6,\u5176\u4e2d\u8bfb\u5199\u4e8b\u4ef6\u662f\u65b9\u4fbf\u4e3a\u4e86\u533a\u5206,\u6b64\u7a0b\u5e8f\u4e2d\u4e0d\u5bf9\u5199\u4e8b\u4ef6\u8fdb\u884c\u5904\u7406;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u8be5\u51fd\u6570\u4e2d\u7684num\u53c2\u6570\u8868\u793aEpollWait()\u51fd\u6570\u7684\u8fd4\u56de\u503c,\u5373\u7531\u5c31\u7eea\u961f\u5217\u63a8\u9001\u81f3\u7528\u6237\u5c42\u7684\u5c31\u7eea\u4e8b\u4ef6\u4e2a\u6570,\u53c2\u6570revs\u5219\u4e3a\u7528\u6237\u9884\u8bbe\u7684\u7a7a\u95f4(\u7a7a\u95f4\u5185\u5df2\u56e0EpollWait()\u5b58\u5728num\u4e2a\u5c31\u7eea\u4e8b\u4ef6);<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5bf9\u4e8b\u4ef6\u8fdb\u884c\u6d3e\u53d1\u7684\u524d\u63d0\u4e3a\u4e86\u89e3\u5bf9\u5e94\u4e8b\u4ef6\u5177\u4f53\u4e8b\u4ef6,\u6839\u636enum\u4e2a\u6570\u5faa\u73af\u904d\u5386revs\u6570\u7ec4\u5373\u53ef\u83b7\u5f97\u5f53\u524d\u5df2\u5c31\u7eea\u4e8b\u4ef6;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u4ee5\u6b64\u83b7\u53d6\u5c31\u7eea\u4e8b\u4ef6\u5bf9\u5e94\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e0e\u5177\u4f53\u4e8b\u4ef6,\u6839\u636e\u5177\u4f53\u4e8b\u4ef6\u8fdb\u884c\u5224\u65ad;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u82e5\u662f\u4e8b\u4ef6\u4e3a\u8bfb\u4e8b\u4ef6\u5c31\u7eea,\u5176\u53ef\u80fd\u6027\u4e3a\u5982\u4e0b:<\/font><\/p>\n<ul>\n<li><font face=\"\u534e\u6587\u4e2d\u5b8b\"> \u76d1\u542c\u5957\u63a5\u5b57\u76d1\u542c\u5230\u65b0\u8fde\u63a5<\/font><\/li>\n<li><font face=\"\u534e\u6587\u4e2d\u5b8b\"> \u5176\u4ed6\u6587\u4ef6\u63cf\u8ff0\u7b26\u83b7\u53d6\u5230\u53ef\u8bfb\u6570\u636e<\/font><\/li>\n<\/ul>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u5c31\u7eea\u4e8b\u4ef6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e3a\u76d1\u542c\u5957\u63a5\u5b57\u6587\u4ef6\u63cf\u8ff0\u7b26\u65f6\u5219\u8868\u793a\u9700\u8981\u8c03\u7528accept()\u83b7\u53d6\u65b0\u8fde\u63a5,\u5e76\u5c06\u65b0\u8fde\u63a5\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u6ce8\u518c\u81f3Epoll\u6a21\u578b\u4e2d\u7684\u7ea2\u9ed1\u6811;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u5c31\u7eea\u4e8b\u4ef6\u4e0d\u4e3a\u76d1\u542c\u5957\u63a5\u5b57\u63cf\u8ff0\u7b26\u65f6\u5219\u8868\u793a\u5176\u4ed6\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u53ef\u8bfb\u6570\u636e\u5df2\u7ecf\u5c31\u7eea,\u9700\u8981\u5c06\u6570\u636e\u901a\u8fc7\u6587\u4ef6\u63cf\u8ff0\u7b26\u62f7\u8d1d\u81f3\u7528\u6237\u5c42;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> Accepter()\u8fde\u63a5\u7ba1\u7406\u5668<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u4e8b\u4ef6\u4e3a\u65b0\u8fde\u63a5\u5230\u6765\u65f6\u5c06\u8c03\u7528\u5bf9\u5e94\u7684accept()\u51fd\u6570\u83b7\u53d6\u65b0\u8fde\u63a5,\u5e76\u5c06\u65b0\u8fde\u63a5\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4ee5\u5173\u5fc3\u4e8b\u4ef6\u4e3a\u8bfb\u4e8b\u4ef6\u6ce8\u518c\u8fdb\u64cd\u4f5c\u7cfb\u7edfEpoll\u6a21\u578b\u7684\u7ea2\u9ed1\u6811\u5f53\u4e2d;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u6b64\u5904\u76f4\u63a5\u8c03\u7528\u5c01\u88c5\u7684Socket\u63a5\u53e3\u5b8c\u6210\u8fde\u63a5\u7684\u83b7\u53d6;<\/font><\/p>\n<p> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EpollServer<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">nocopy<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">Accepter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        std<span class=\"token double-colon punctuation\">::<\/span>string clientip<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">uint16_t<\/span> clientport<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> newfd <span class=\"token operator\">&#061;<\/span> _listensocket<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">Accept<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>clientip<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>clientport<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>newfd <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">lg<\/span><span class=\"token punctuation\">(<\/span>WARNING<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;New fd Accept error: %s&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">strerror<\/span><span class=\"token punctuation\">(<\/span>errno<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token function\">lg<\/span><span class=\"token punctuation\">(<\/span>INFO<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;New fd Accept Sucess, fd: %d&#034;<\/span><span class=\"token punctuation\">,<\/span> newfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        _epoller<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">EpollerUpdate<\/span><span class=\"token punctuation\">(<\/span>EPOLL_CTL_ADD<span class=\"token punctuation\">,<\/span> newfd<span class=\"token punctuation\">,<\/span> EVENT_IN<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>shared_ptr<span class=\"token operator\">&lt;<\/span>NetSocket<span class=\"token operator\">&gt;<\/span> _listensocket<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4f7f\u7528\u667a\u80fd\u6307\u9488<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>shared_ptr<span class=\"token operator\">&lt;<\/span>Epoller<span class=\"token operator\">&gt;<\/span> _epoller<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">uint16_t<\/span> _port<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> Recver()\u4fe1\u606f\u83b7\u53d6\u4e0e\u56de\u54cd<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u8bfb\u4e8b\u4ef6\u5bf9\u5e94\u7684\u63cf\u8ff0\u7b26\u4e0d\u4e3a\u76d1\u542c\u5957\u63a5\u5b57\u63cf\u8ff0\u7b26\u65f6\u5219\u8868\u793a\u9700\u8981\u5c06\u6570\u636e\u7531\u5bf9\u5e94\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e2d\u83b7\u53d6,\u5e76\u5c06\u6570\u636e\u56de\u54cd\u5199\u56de\u5ba2\u6237\u7aef\u4e0a;<\/font><\/p>\n<p> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EpollServer<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">nocopy<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">Recver<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> fd<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">char<\/span> inbuff<span class=\"token punctuation\">[<\/span><span class=\"token number\">1024<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">read<\/span><span class=\"token punctuation\">(<\/span>fd<span class=\"token punctuation\">,<\/span> inbuff<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>inbuff<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>n <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            inbuff<span class=\"token punctuation\">[<\/span>n<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Fd %d Get a message: %s&#034;<\/span><span class=\"token punctuation\">,<\/span> fd<span class=\"token punctuation\">,<\/span> inbuff<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            std<span class=\"token double-colon punctuation\">::<\/span>string echo_str <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;Server Echo &#064; &#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            echo_str <span class=\"token operator\">&#043;&#061;<\/span> inbuff<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">write<\/span><span class=\"token punctuation\">(<\/span>fd<span class=\"token punctuation\">,<\/span> echo_str<span class=\"token punctuation\">.<\/span><span class=\"token function\">c_str<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> echo_str<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>n <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Fd %d Closed, Me too&#8230;\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> fd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            _epoller<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">EpollerUpdate<\/span><span class=\"token punctuation\">(<\/span>EPOLL_CTL_DEL<span class=\"token punctuation\">,<\/span> fd<span class=\"token punctuation\">,<\/span> EVENT_DEL_OP<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5728\u8fdb\u884c\u5220\u9664\u64cd\u4f5c\u65f6\u786e\u4fdd\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e3a\u4e00\u4e2a\u6709\u6548\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26<\/span><br \/>\n            <span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>fd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">else<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">lg<\/span><span class=\"token punctuation\">(<\/span>WARNING<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Read error&#8230;\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            _epoller<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">EpollerUpdate<\/span><span class=\"token punctuation\">(<\/span>EPOLL_CTL_DEL<span class=\"token punctuation\">,<\/span> fd<span class=\"token punctuation\">,<\/span> EVENT_DEL_OP<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>fd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>shared_ptr<span class=\"token operator\">&lt;<\/span>NetSocket<span class=\"token operator\">&gt;<\/span> _listensocket<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4f7f\u7528\u667a\u80fd\u6307\u9488<\/span><br \/>\n    std<span class=\"token double-colon punctuation\">::<\/span>shared_ptr<span class=\"token operator\">&lt;<\/span>Epoller<span class=\"token operator\">&gt;<\/span> _epoller<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">uint16_t<\/span> _port<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u8fd9\u91cc\u76f4\u63a5\u8c03\u7528read()\u8fdb\u884c\u6570\u636e\u7684\u63d0\u53d6\u5e76\u8fdb\u884c\u6253\u5370,\u8fd4\u56de\u503c(n)\u6709\u4e09\u79cd\u7ed3\u679c:<\/font><\/p>\n<ul>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> n&gt;0<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u8868\u793a\u6b63\u786e\u8bfb\u53d6;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> n&#061;&#061;0<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u8868\u793a\u5bf9\u7aef\u5173\u95ed\u8fde\u63a5;<\/font><\/p>\n<\/li>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> n&lt;0<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u8868\u793aread()\u8c03\u7528\u5931\u8d25;<\/font><\/p>\n<\/li>\n<\/ul>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u6b63\u786e\u8bfb\u53d6\u65f6\u5bf9\u6570\u636e\u8fdb\u884c\u6253\u5370\u5e76\u8c03\u7528write()\u56de\u54cd\u56de\u5bf9\u7aef;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5f53\u5bf9\u7aef\u5173\u95ed\u8fde\u63a5\u4e0e\u8bfb\u53d6\u5931\u8d25\u65f6\u8c03\u7528\u65e5\u5fd7\u63d2\u4ef6\u6253\u5370\u51fa\u5bf9\u5e94\u65e5\u5fd7\u4fe1\u606f\u5e76\u540c\u6837\u5bf9\u8fde\u63a5\u8fdb\u884c\u5173\u95ed;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u5173\u95ed\u8fde\u63a5\u6d89\u53ca\u5230\u79fb\u9664Epoll\u4e2d\u5173\u5fc3\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e0eclose()\u5173\u95ed\u8fde\u63a5,\u8fd9\u91cc\u503c\u5f97\u6ce8\u610f\u7684\u662f,\u5728\u8fdb\u884cepoll_ctl()\u5c06\u6587\u4ef6\u63cf\u8ff0\u7b26\u8fdb\u884c\u79fb\u9664\u65f6\u9700\u8981\u786e\u4fdd\u8be5\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e3a\u4e00\u4e2a\u6709\u6548\u6587\u4ef6\u63cf\u8ff0\u7b26,\u5426\u5219\u8c03\u7528\u5c06\u5931\u8d25\u62a5\u9519;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u56e0\u6b64\u9700\u8981\u5148\u79fb\u9664\u6587\u4ef6\u63cf\u8ff0\u7b26\u518d\u8c03\u7528close()\u5bf9\u6587\u4ef6\u63cf\u8ff0\u7b26\u8fdb\u884c\u5173\u95ed;<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> \u540c\u65f6\u8fd9\u91cc\u76f4\u63a5\u8c03\u7528read()\u4f1a\u5b58\u5728\u4e00\u4e2a\u95ee\u9898,\u5373\u6570\u636e\u8bfb\u53d6\u53ef\u80fd\u4e0d\u5b8c\u5168\u7684\u95ee\u9898(\u6b64\u5904\u53ea\u63d0\u51fa\u95ee\u9898\u4e0d\u8fdb\u884c\u89e3\u51b3,\u4e0d\u518d\u8d58\u8ff0);<\/font><\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h4>Epoll Echo Server \u6d4b\u8bd5\u53ca\u5b8c\u6574\u4ee3\u7801<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418173332-68028cece0be7.png\" alt=\"\" width=\"750\" \/><\/p>\n<p><font face=\"\u534e\u6587\u6977\u4f53\" size=\"4\"> \u4ece\u6d4b\u8bd5\u7ed3\u679c\u53ef\u4ee5\u770b\u51fa,\u5176\u7ed3\u679c\u4e0eSelect\u65b9\u6848Poll\u65b9\u6848\u591a\u8def\u8f6c\u63a5\u6240\u5b9e\u73b0\u7684EchoServer\u76f8\u540c,\u4e14\u5176\u6548\u7387\u8981\u6bd4\u53e6\u4e24\u79cd\u65b9\u6848\u591a\u8def\u8f6c\u63a5\u65b9\u6848\u66f4\u4e3a\u4f18\u79c0;<\/font><\/p>\n<ul>\n<li>\n<p><font face=\"\u534e\u6587\u4e2d\u5b8b\"> \u5b8c\u6574\u4ee3\u7801(\u4f9b\u53c2\u8003)<\/font><\/p>\n<p><font face=\"\u534e\u6587\u4eff\u5b8b\" size=\"4\"> [\u534a\u4ecb\u83bd\u592b &#8211; Gitee For half-intermediate-mangfu\/IO\/AdvancedIO\/EpollServer 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