{"id":88094,"date":"2026-07-31T12:58:57","date_gmt":"2026-07-31T04:58:57","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/88094.html"},"modified":"2026-07-31T12:58:57","modified_gmt":"2026-07-31T04:58:57","slug":"%e3%80%90linux%e7%bd%91%e7%bb%9c%e3%80%91%e5%a4%9a%e8%b7%af%e8%bd%ac%e6%8e%a5epoll%ef%bc%88%e4%ba%94%ef%bc%89reactor%e6%a8%a1%e5%bc%8f%ef%bc%9a%e5%9f%ba%e4%ba%8eepoll%e7%9a%84%e9%ab%98%e6%80%a7","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/88094.html","title":{"rendered":"\u3010Linux\u7f51\u7edc\u3011\u591a\u8def\u8f6c\u63a5epoll\uff08\u4e94\uff09Reactor\u6a21\u5f0f\uff1a\u57fa\u4e8eepoll\u7684\u9ad8\u6027\u80fd\u7f51\u7edc\u670d\u52a1\u5668\u8bbe\u8ba1\u4e0e\u5b9e\u73b0\uff08\u4e0b\uff09\u5269\u4f59\u7ec6\u8282\u8865\u5145 + \u591a\u8fdb\u7a0b\u591a\u7ebf\u7a0b\u5b9e\u73b0Reactor\u8981\u70b9"},"content":{"rendered":"

\"\u5934\u50cf\" <\/p>\n

🎬 \u4e2a\u4eba\u4e3b\u9875：\u827e\u8389\u4e1d\u52aa\u529b\u7ec3\u5251<\/font><\/p>\n

\u2744\u4e13\u680f\u4f20\u9001\u95e8：\u300aC\u8bed\u8a00\u300b\u300a\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u300b\u300aC\/C++\u5e72\u8d27\u5206\u4eab&\u5b66\u4e60\u8fc7\u7a0b\u8bb0\u5f55\u300b \u300aLinux\u64cd\u4f5c\u7cfb\u7edf\u7f16\u7a0b\u8be6\u89e3\u300b\u300a\u7b14\u8bd5\/\u9762\u8bd5\u5e38\u89c1\u7b97\u6cd5：\u4ece\u57fa\u7840\u5230\u8fdb\u9636\u300b\u300aPython\u5e72\u8d27\u5206\u4eab\u300b<\/font><\/p>\n

\u2b50\ufe0f\u4e3a\u5929\u5730\u7acb\u5fc3，\u4e3a\u751f\u6c11\u7acb\u547d，\u4e3a\u5f80\u5723\u7ee7\u7edd\u5b66，\u4e3a\u4e07\u4e16\u5f00\u592a\u5e73 <\/font><\/p>\n

\n

🎬 \u827e\u8389\u4e1d\u7684\u7b80\u4ecb：<\/font><\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\n

\u6587\u7ae0\u76ee\u5f55<\/h4>\n
    \n
  • \u524d\u8a00<\/li>\n
  • \n
      \n
    • \u4e00\u3001 \u5f00\u5934\u90e8\u5206（\u6846\u67b6\u5f15\u5165）<\/li>\n
    • \n
        \n
      • 1. \u6574\u4f53\u5b66\u4e60\u6846\u67b6\u5bfc\u5165\u8bed<\/li>\n
      • 2. \u7ed3\u6784\u5316\u77e5\u8bc6\u5bfc\u56fe<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n
      • 1 ~> \u6838\u5fc3\u63a5\u53e3\u5b9e\u73b0：EnableReadWrite<\/li>\n
      • \n
          \n
        • 1.1 \u63a5\u53e3\u8bbe\u8ba1\u80cc\u666f\u4e0e\u6838\u5fc3\u903b\u8f91<\/li>\n
        • 1.2 Reactor \u5c42\u63a5\u53e3\u5b9e\u73b0<\/li>\n
        • 1.3 Poller \u5c42\u80fd\u529b\u652f\u6491：ModEvents \u4e0e EpollCtlHelper<\/li>\n
        • \n
            \n
          • 1.3.1 ModEvents \u63a5\u53e3\u521d\u59cb\u5b9e\u73b0<\/li>\n
          • 1.3.2 EpollCtlHelper \u516c\u5171\u5c01\u88c5<\/li>\n<\/ul>\n<\/li>\n
          • 1.4 \u53d1\u9001\u903b\u8f91\u4e0e\u63a5\u53e3\u7684\u8054\u52a8<\/li>\n
          • 1.5 EnableReadWrite\u77e5\u8bc6\u56fe\u8c31<\/li>\n<\/ul>\n<\/li>\n
          • 2 ~> \u534f\u8bae\u5c42\u4e0e\u5f02\u5e38\u5904\u7406\u4fee\u6b63<\/li>\n
          • \n
              \n
            • 2.1 \u534f\u8bae\u89e3\u6790\u5931\u8d25\u7684\u903b\u8f91\u4fee\u6b63<\/li>\n
            • 2.2 \u63a5\u6536\u7aef\u5f02\u5e38\u5904\u7406\u94fe\u8def<\/li>\n<\/ul>\n<\/li>\n
            • 3 ~> \u8fde\u63a5\u751f\u547d\u5468\u671f：\u5220\u9664\u673a\u5236\u5b9e\u73b0<\/li>\n
            • \n
                \n
              • 3.1 \u5220\u9664\u64cd\u4f5c\u7684\u65f6\u5e8f\u539f\u5219<\/li>\n
              • 3.2 Reactor \u5c42 DelConnection \u5b9e\u73b0<\/li>\n
              • 3.3 Poller \u5c42 DelEvents \u5b9e\u73b0<\/li>\n
              • \n
                  \n
                • 3.3.1 EPOLL_CTL_DEL \u7684\u7cfb\u7edf\u8c03\u7528\u89c4\u8303<\/li>\n
                • 3.3.2 \u4ee3\u7801\u5b9e\u73b0\u4e0e\u8fb9\u754c\u4fee\u6b63<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n
                • 4 ~> \u6838\u5fc3\u4ee3\u7801\u7ec6\u8282\u4e0e\u8fb9\u754c\u573a\u666f<\/li>\n
                • \n
                    \n
                  • 4.1 \u5199\u4e8b\u4ef6\u4f7f\u80fd\u7684\u4e24\u79cd\u89e6\u53d1\u65b9\u6848<\/li>\n
                  • 4.2 \u62a5\u6587\u65f6\u5e8f\u4fdd\u8bc1<\/li>\n
                  • 4.3 \u4e8b\u4ef6\u6d3e\u53d1 LoopOnce \u903b\u8f91<\/li>\n<\/ul>\n<\/li>\n
                  • 5 ~> \u8fde\u63a5\u4fdd\u6d3b\u673a\u5236<\/li>\n
                  • \n
                      \n
                    • 5.1 \u8fde\u63a5\u6d3b\u8dc3\u65f6\u95f4\u6233\u8bbe\u8ba1<\/li>\n
                    • 5.2 \u4fdd\u6d3b\u68c0\u6d4b\u7684\u6267\u884c\u65f6\u673a<\/li>\n
                    • 5.3 \u6dd8\u6c70\u7b56\u7565\u7684\u5de5\u7a0b\u5316\u6269\u5c55<\/li>\n<\/ul>\n<\/li>\n
                    • 6 ~> Reactor \u6a21\u5f0f\u6838\u5fc3\u7406\u8bba<\/li>\n
                    • \n
                        \n
                      • 6.1 \u53cd\u5e94\u5806\u6a21\u5f0f\u7684\u672c\u8d28<\/li>\n
                      • 6.2 \u534a\u540c\u6b65\u534a\u5f02\u6b65\u7279\u6027<\/li>\n
                      • 6.3 \u5355 Reactor \u4e0e\u591a Reactor \u7684\u5178\u578b\u5e94\u7528<\/li>\n<\/ul>\n<\/li>\n
                      • 7 ~> \u591a\u8fdb\u7a0b Reactor \u6539\u9020\u65b9\u6848<\/li>\n
                      • \n
                          \n
                        • 7.1 \u6838\u5fc3\u67b6\u6784：Master-Slaver \u8fdb\u7a0b\u6c60<\/li>\n
                        • 7.2 One Thread One Loop \u8bbe\u8ba1\u601d\u60f3<\/li>\n
                        • 7.3 \u8d1f\u8f7d\u5747\u8861\u4e0e\u8fde\u63a5\u5206\u53d1\u903b\u8f91<\/li>\n<\/ul>\n<\/li>\n
                        • 8 ~> \u591a\u7ebf\u7a0b Reactor \u6539\u9020\u65b9\u6848<\/li>\n
                        • \n
                            \n
                          • 8.1 \u65b9\u6848\u4e00：\u7ba1\u9053\u901a\u77e5\u5f0f\u591a\u7ebf\u7a0b<\/li>\n
                          • 8.2 \u65b9\u6848\u4e8c：eventfd \u4e8b\u4ef6\u901a\u77e5\u673a\u5236<\/li>\n
                          • \n
                              \n
                            • 8.2.1 eventfd \u6838\u5fc3\u7279\u6027<\/li>\n
                            • 8.2.2 eventfd \u4e24\u79cd\u5de5\u4f5c\u6a21\u5f0f<\/li>\n
                            • 8.2.3 \u57fa\u4e8e eventfd \u7684\u591a\u7ebf\u7a0b Reactor \u67b6\u6784<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n
                            • 9 ~> \u77e5\u8bc6\u56fe\u8c31\u90e8\u5206<\/li>\n
                            • \n
                                \n
                              • 9.1 \u8865\u5145：\u5b9e\u73b0 ModEvents（Poller.hpp）（\u5185\u90e8\u5b9e\u73b0\u4e00\u4e2aEpollCtlHelper\u51fd\u6570，\u65b9\u4fbf\u4f7f\u7528\u8fd9\u4e2a\u65b9\u6cd5\u548cAddEvents，\u56e0\u4e3a\u4ee3\u7801\u90fd\u5dee\u4e0d\u591a）<\/li>\n
                              • 9.2 \u6d4b\u8bd5：\u5ba2\u6237\u7aef\u76f4\u63a5\u62ff\u7f51\u7edc\u7248\u672c\u8ba1\u7b97\u5668\u91cc\u9762\u5b9e\u73b0\u8fc7\u7684（OnlineCalClient.cc）<\/li>\n
                              • 9.3 \u8865\u5145：HandlerRequest\u91cc\u9762\u5c0f\u4fee\u6539（Protocol.hpp）<\/li>\n
                              • 9.4 \u8865\u5145：\u6539\u4e00\u4e0b\u5ba2\u6237\u7aef（\u6709\u95ee\u9898，\u4f1a\u5237\u5c4f）<\/li>\n
                              • 9.5 \u8865\u5145：\u6d4b\u8bd5\u4e00\u4e0b\u8d70\u5230\u5f02\u5e38\u5904\u7406（telnet\u6a21\u62df\u9519\u8bef\u7684\u8bf7\u6c42）<\/li>\n
                              • 9.6 \u8865\u5145：\u5b9e\u73b0 DelConnection（Reactor.hpp）&& \u5b9e\u73b0DelEvents（Poller.hpp）<\/li>\n
                              • 9.7 \u6d4b\u8bd5<\/li>\n
                              • 9.8 \u7ec6\u8282\u95ee\u9898<\/li>\n
                              • 9.9 \u5355Reactor\u6a21\u5f0f\u6536\u5c3e<\/li>\n
                              • 9.10 \u591aReactor\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n
                              • 10 ~> \u8865\u8db3\u7ec6\u8282\u4e4b\u540e\u7684\u5355Reactor\u7684\u4ee3\u7801\u90e8\u5206\u8bf4\u660e<\/li>\n
                              • \u7ed3\u5c3e\u90e8\u5206：\u6838\u5fc3\u603b\u7ed3<\/li>\n
                              • \n
                                  \n
                                • 1. \u63a5\u53e3\u5b9e\u73b0\u7c7b\u6838\u5fc3\u8003\u70b9<\/li>\n
                                • 2. \u5f02\u5e38\u4e0e\u8fb9\u754c\u7c7b\u9ad8\u9891\u5751\u70b9<\/li>\n
                                • 3. \u4e8b\u4ef6\u673a\u5236\u6838\u5fc3\u539f\u7406<\/li>\n
                                • 4. \u8fde\u63a5\u4fdd\u6d3b\u673a\u5236\u8003\u70b9<\/li>\n
                                • 5. \u591a\u6267\u884c\u6d41\u6539\u9020\u6838\u5fc3\u67b6\u6784<\/li>\n
                                • 6. Reactor \u6a21\u5f0f\u7406\u8bba\u8003\u70b9<\/li>\n<\/ul>\n<\/li>\n
                                • \u7ed3\u5c3e<\/li>\n<\/ul>\n
                                  \n

                                  \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                  \n

                                  \u524d\u8a00<\/h2>\n

                                  \u4e00\u3001 \u5f00\u5934\u90e8\u5206（\u6846\u67b6\u5f15\u5165）<\/h3>\n

                                  1. \u6574\u4f53\u5b66\u4e60\u6846\u67b6\u5bfc\u5165\u8bed<\/h4>\n

                                  \u672c\u6587\u56f4\u7ed5 Linux \u9ad8\u6027\u80fd\u7f51\u7edc\u670d\u52a1\u5668\u7684\u6838\u5fc3\u67b6\u6784 \u2014\u2014Reactor \u53cd\u5e94\u5806\u6a21\u5f0f\u5c55\u5f00，\u8986\u76d6\u5355 Reactor \u6a21\u578b\u7684\u4ee3\u7801\u6536\u5c3e\u3001\u8fde\u63a5\u5168\u751f\u547d\u5468\u671f\u7ba1\u7406\u3001\u5f02\u5e38\u8fb9\u754c\u5904\u7406，\u4ee5\u53ca\u591a\u8fdb\u7a0b \/ \u591a\u7ebf\u7a0b\u67b6\u6784\u7684\u6539\u9020\u65b9\u6848\u3002\u5168\u7bc7\u57fa\u4e8e epoll \u7684 ET \u8fb9\u7f18\u89e6\u53d1\u6a21\u5f0f，\u6df1\u5ea6\u62c6\u89e3\u8bfb\u5199\u4e8b\u4ef6\u52a8\u6001\u4f7f\u80fd\u3001\u5185\u6838\u4e8b\u4ef6\u540c\u6b65\u3001\u8fde\u63a5\u9500\u6bc1\u65f6\u5e8f\u3001\u8fde\u63a5\u4fdd\u6d3b\u3001\u8de8\u6267\u884c\u6d41\u4e8b\u4ef6\u901a\u77e5\u7b49\u5de5\u7a0b\u7ea7\u7ec6\u8282，\u540c\u65f6\u5bf9\u539f\u4ee3\u7801\u4e2d\u7684\u9057\u7559\u7f3a\u9677\u3001\u8fb9\u754c\u9690\u60a3\u8fdb\u884c\u9010\u4e00\u5ba1\u8ba1\u4e0e\u4fee\u6b63，\u5f62\u6210\u903b\u8f91\u95ed\u73af\u7684\u590d\u4e60\u4f53\u7cfb，\u662f\u7f51\u7edc\u670d\u52a1\u7aef\u5f00\u53d1\u7684\u6838\u5fc3\u8003\u6838\u5185\u5bb9\u3002<\/p>\n

                                  2. \u7ed3\u6784\u5316\u77e5\u8bc6\u5bfc\u56fe<\/h4>\n

                                  Reactor\u4ee3\u7801\u6536\u5c3e\u4e0e\u591a\u6267\u884c\u6d41\u6539\u9020
                                  \n+- \u6838\u5fc3\u63a5\u53e3：EnableReadWrite
                                  \n|<\/span> |<\/span>– \u63a5\u53e3\u529f\u80fd：\u52a8\u6001\u63a7\u5236\u5957\u63a5\u5b57\u8bfb\u5199\u4e8b\u4ef6\u5173\u5fc3
                                  \n|<\/span> |<\/span>– Reactor\u5c42：\u5b58\u5728\u6027\u6821\u9a8c + \u4e8b\u4ef6\u4f4d\u8fd0\u7b97 + \u5185\u6838\u540c\u6b65
                                  \n|<\/span> `<\/span>– Poller\u5c42：ModEvents + EpollCtlHelper\u516c\u5171\u5c01\u88c5
                                  \n+- \u534f\u8bae\u4e0e\u5f02\u5e38\u5904\u7406\u4fee\u6b63
                                  \n|<\/span> |<\/span>– \u534f\u8bae\u5c42：\u89e3\u6790\u5931\u8d25\u9000\u51fa\u8fdb\u7a0b\u2192\u8fd4\u56de\u7a7a\u4e32+\u9519\u8bef\u7801
                                  \n|<\/span> `<\/span><\/span>– IO\u5c42：\u9519\u8bef\u7801\u5224\u5b9a\u2192\u89e6\u53d1\u8fde\u63a5\u5f02\u5e38\u9500\u6bc1
                                  \n+- \u8fde\u63a5\u5220\u9664\u673a\u5236
                                  \n|<\/span> |<\/span>– \u9500\u6bc1\u65f6\u5e8f：epoll\u79fb\u9664 \u2192 \u5173\u95edfd \u2192 \u79fb\u9664\u7ba1\u7406\u8282\u70b9
                                  \n|<\/span> |<\/span>– Reactor\u5c42：DelConnection\u63a5\u53e3
                                  \n|<\/span> `<\/span>– Poller\u5c42：DelEvents + EPOLL_CTL_DEL\u89c4\u8303
                                  \n+- \u6838\u5fc3\u4ee3\u7801\u7ec6\u8282
                                  \n|<\/span> |<\/span>– \u5199\u89e6\u53d1：\u76f4\u63a5\u8c03\u7528Sender \/ \u4f7f\u80fdEPOLLOUT\u81ea\u52a8\u89e6\u53d1
                                  \n|<\/span> |<\/span>– \u65f6\u5e8f\u4fdd\u8bc1：\u5355Reactor\u4e0b\u8bf7\u6c42\u5e94\u7b54\u4e25\u683c\u6709\u5e8f
                                  \n|<\/span> `<\/span><\/span>– \u4e8b\u4ef6\u6d3e\u53d1：LoopOnce\u8d85\u65f6\u673a\u5236 + \u9519\u8bef\u4e8b\u4ef6\u8f6c\u6362
                                  \n+- \u8fde\u63a5\u4fdd\u6d3b\u673a\u5236
                                  \n|<\/span> |<\/span>– \u65f6\u95f4\u6233\u5b57\u6bb5：_lasttimestamp
                                  \n|<\/span> |<\/span>– \u66f4\u65b0\u65f6\u673a：\u8bfb\u5199\u4e8b\u4ef6\u89e6\u53d1\u65f6\u8c03\u7528Update
                                  \n|<\/span> `<\/span>– \u6dd8\u6c70\u903b\u8f91：\u5b9a\u65f6\u904d\u5386 + \u8d85\u65f6\u8fde\u63a5\u9500\u6bc1
                                  \n+- Reactor\u6a21\u5f0f\u7406\u8bba
                                  \n|<\/span> |<\/span>– \u672c\u8d28：\u4e8b\u4ef6\u9a71\u52a8 + \u56de\u8c03\u5206\u53d1
                                  \n|<\/span> |<\/span>– \u7279\u6027：\u534a\u540c\u6b65\u534a\u5f02\u6b65
                                  \n|<\/span> `<\/span><\/span>– \u5206\u7c7b：\u5355Reactor(<\/span>Redis)<\/span> \/ \u591aReactor(<\/span>Nginx)<\/span>
                                  \n+- \u591a\u8fdb\u7a0bReactor\u6539\u9020
                                  \n|<\/span> |<\/span>– \u67b6\u6784：Master-Slaver\u8fdb\u7a0b\u6c60
                                  \n|<\/span> |<\/span>– \u6838\u5fc3\u601d\u60f3：One Thread One Loop
                                  \n|<\/span> `<\/span>– \u5206\u53d1：\u7ba1\u9053\u901a\u77e5 + \u5b50\u8fdb\u7a0b\u81ea\u4e3baccept
                                  \n`<\/span><\/span>– \u591a\u7ebf\u7a0bReactor\u6539\u9020
                                  \n |<\/span>– \u65b9\u68481：\u7ba1\u9053\u901a\u77e5\u5206\u53d1\u8fde\u63a5fd
                                  \n |<\/span>– \u65b9\u68482：eventfd\u8f7b\u91cf\u4e8b\u4ef6\u901a\u77e5
                                  \n |<\/span> |<\/span>– eventfd\u7279\u6027：\u8ba1\u6570\u5668\u3001\u539f\u5b50\u6027\u3001\u652f\u6301epoll
                                  \n |<\/span> `<\/span>– \u4e24\u79cd\u6a21\u5f0f：\u666e\u901a\u6a21\u5f0f \/ \u4fe1\u53f7\u91cf\u6a21\u5f0f
                                  \n `<\/span><\/span>– \u67b6\u6784：Master\u7ebf\u7a0baccept + \u4efb\u52a1\u961f\u5217 + eventfd\u5524\u9192<\/p>\n

                                  \n

                                  1 ~> \u6838\u5fc3\u63a5\u53e3\u5b9e\u73b0：EnableReadWrite<\/h2>\n

                                  1.1 \u63a5\u53e3\u8bbe\u8ba1\u80cc\u666f\u4e0e\u6838\u5fc3\u903b\u8f91<\/h3>\n

                                  \u5728\u975e\u963b\u585e\u7f51\u7edc\u7f16\u7a0b\u4e2d，\u53d1\u9001\u7f13\u51b2\u533a\u7684\u72b6\u6001\u662f\u52a8\u6001\u53d8\u5316\u7684：\u5f53\u6570\u636e\u4e00\u6b21\u6027\u65e0\u6cd5\u5168\u90e8\u53d1\u9001\u5b8c\u6bd5\u65f6，\u9700\u8981\u8ba9 epoll \u5f00\u59cb\u5173\u5fc3 EPOLLOUT \u4e8b\u4ef6，\u7b49\u5f85\u53d1\u9001\u7f13\u51b2\u533a\u7a7a\u95f2\u540e\u81ea\u52a8\u7ee7\u7eed\u53d1\u9001；\u5f53\u6570\u636e\u5168\u90e8\u53d1\u9001\u5b8c\u6210\u540e，\u9700\u8981\u53d6\u6d88\u5bf9 EPOLLOUT \u7684\u5173\u5fc3，\u907f\u514d\u9891\u7e41\u89e6\u53d1\u65e0\u6548\u7684\u5199\u5c31\u7eea\u4e8b\u4ef6\u3002 EnableReadWrite \u63a5\u53e3\u7684\u6838\u5fc3\u4f5c\u7528，\u5c31\u662f\u52a8\u6001\u8c03\u6574\u6307\u5b9a\u5957\u63a5\u5b57\u5728 epoll \u4e0a\u7684\u4e8b\u4ef6\u76d1\u542c\u72b6\u6001，\u5b9e\u73b0\u53d1\u9001\u6d41\u7a0b\u7684\u81ea\u52a8\u5316\u4e8b\u4ef6\u9a71\u52a8\u3002<\/p>\n

                                  1.2 Reactor \u5c42\u63a5\u53e3\u5b9e\u73b0<\/h3>\n

                                  \u63a5\u53e3\u63a5\u6536\u4e09\u4e2a\u53c2\u6570：\u5957\u63a5\u5b57 sockfd\u3001\u662f\u5426\u4f7f\u80fd\u8bfb\u4e8b\u4ef6 enableread\u3001\u662f\u5426\u4f7f\u80fd\u5199\u4e8b\u4ef6 enablewrite\u3002 \u6267\u884c\u6d41\u7a0b：<\/p>\n

                                • \u9c81\u68d2\u6027\u6821\u9a8c：\u5982\u679c\u8be5\u5957\u63a5\u5b57\u5bf9\u5e94\u7684\u8fde\u63a5\u4e0d\u5b58\u5728，\u76f4\u63a5\u8fd4\u56de，\u907f\u514d\u975e\u6cd5\u8bbf\u95ee\u3002<\/li>\n
                                • \u4e8b\u4ef6\u7ec4\u88c5：\u901a\u8fc7\u4f4d\u8fd0\u7b97\u751f\u6210\u6700\u7ec8\u4e8b\u4ef6\u96c6\u5408，\u8bfb\u4e8b\u4ef6\u5bf9\u5e94 EPOLLIN，\u5199\u4e8b\u4ef6\u5bf9\u5e94 EPOLLOUT，\u5f3a\u5236\u5f00\u542f EPOLLET \u8fb9\u7f18\u89e6\u53d1\u6a21\u5f0f\u3002<\/li>\n
                                • \u72b6\u6001\u66f4\u65b0：\u5148\u66f4\u65b0 Connection \u5bf9\u8c61\u5185\u90e8\u7684_events \u5b57\u6bb5\u3002<\/li>\n
                                • \u5185\u6838\u540c\u6b65：\u8c03\u7528 Poller \u7684 ModEvents \u63a5\u53e3，\u5c06\u4e8b\u4ef6\u53d8\u66f4\u5199\u900f\u5230\u5185\u6838 epoll \u4e2d\u3002<\/li>\n

                                  void<\/span> EnableReadWrite<\/span>(<\/span>int<\/span> sockfd,<\/span> bool<\/span> enableread,<\/span> bool<\/span> enablewrite)<\/span>
                                  \n{<\/span>
                                  \n if<\/span>(<\/span>!<\/span>IsConnectionExists<\/span>(<\/span>sockfd)<\/span>)<\/span>
                                  \n return<\/span>;<\/span><\/p>\n

                                  uint32_t<\/span> events =<\/span> (<\/span>(<\/span>enableread ?<\/span> EPOLLIN :<\/span> 0<\/span>)<\/span> |<\/span> (<\/span>enablewrite ?<\/span> EPOLLOUT :<\/span> 0<\/span>)<\/span> |<\/span> EPOLLET)<\/span>;<\/span>
                                  \n _connections[<\/span>sockfd]<\/span>-><\/span>SetEvents<\/span>(<\/span>events)<\/span>;<\/span>
                                  \n \/\/ \u4e8b\u4ef6\u53d8\u66f4\u5199\u900f\u5230\u5185\u6838<\/span>
                                  \n _epoller-><\/span>ModEvents<\/span>(<\/span>sockfd,<\/span> events)<\/span>;<\/span>
                                  \n}<\/span><\/p>\n

                                  [\u6279\u6ce8]<\/p>\n

                                  \u539f\u7b14\u8bb0\u4e2d\u5b58\u5728\u51fd\u6570\u540d\u5927\u5c0f\u5199\u4e0d\u4e00\u81f4\u3001sockfd \u7b14\u8bef\u4e3a sockta \u7684\u95ee\u9898，\u6b64\u5904\u5df2\u7edf\u4e00\u4fee\u6b63\u3002\u540c\u65f6\u8865\u5145：\u5728 AddConnection \u6d41\u7a0b\u4e2d，\u5fc5\u987b\u8bbe\u7f6e\u56de\u6307\u6307\u9488conn->_R = this，\u8ba9 Connection \u5bf9\u8c61\u80fd\u591f\u53cd\u5411\u8c03\u7528 Reactor \u7684\u63a5\u53e3，\u8fd9\u662f\u8fde\u63a5\u81ea\u4e3b\u4fee\u6539\u4e8b\u4ef6\u7684\u524d\u63d0，\u5c5e\u4e8e\u5178\u578b\u7684\u53cc\u5411\u5173\u8054\u8bbe\u8ba1\u3002<\/p>\n

                                  1.3 Poller \u5c42\u80fd\u529b\u652f\u6491：ModEvents \u4e0e EpollCtlHelper<\/h3>\n

                                  1.3.1 ModEvents \u63a5\u53e3\u521d\u59cb\u5b9e\u73b0<\/h4>\n

                                  ModEvents \u5bf9\u5e94\u7cfb\u7edf\u8c03\u7528 epoll_ctl \u7684 EPOLL_CTL_MOD \u64cd\u4f5c，\u7528\u4e8e\u4fee\u6539\u5185\u6838\u4e2d\u6307\u5b9a\u5957\u63a5\u5b57\u7684\u76d1\u542c\u4e8b\u4ef6\u3002\u521d\u59cb\u5b9e\u73b0\u4e0e AddEvents \u9ad8\u5ea6\u76f8\u4f3c，\u4ec5\u64cd\u4f5c\u7801\u4e0d\u540c，\u5b58\u5728\u5927\u91cf\u5197\u4f59\u4ee3\u7801\u3002<\/p>\n

                                  1.3.2 EpollCtlHelper \u516c\u5171\u5c01\u88c5<\/h4>\n

                                  \u4e3a\u6d88\u9664\u4ee3\u7801\u5197\u4f59，\u62bd\u53d6\u516c\u5171\u8f85\u52a9\u51fd\u6570 EpollCtlHelper，\u63a5\u6536\u5957\u63a5\u5b57\u3001\u4e8b\u4ef6\u96c6\u5408\u3001\u64cd\u4f5c\u7801\u4e09\u4e2a\u53c2\u6570，\u7edf\u4e00\u6267\u884c epoll_ctl \u8c03\u7528\u3002AddEvents\u3001ModEvents\u3001\u540e\u7eed\u7684 DelEvents \u5747\u53ef\u590d\u7528\u8be5\u51fd\u6570\u3002<\/p>\n

                                  private<\/span>:<\/span>
                                  \n int<\/span> EpollCtlHelper<\/span>(<\/span>int<\/span> sockfd,<\/span> uint32_t<\/span> events,<\/span> int<\/span> oper)<\/span>
                                  \n {<\/span>
                                  \n struct<\/span> epoll_event<\/span> ev;<\/span>
                                  \n ev.<\/span>events =<\/span> events;<\/span>
                                  \n ev.<\/span>data.<\/span>fd =<\/span> sockfd;<\/span>
                                  \n return<\/span> epoll_ctl<\/span>(<\/span>_epfd,<\/span> oper,<\/span> sockfd,<\/span> &<\/span>ev)<\/span>;<\/span>
                                  \n }<\/span><\/p>\n

                                  public<\/span>:<\/span>
                                  \n void<\/span> AddEvents<\/span>(<\/span>int<\/span> sockfd,<\/span> uint32_t<\/span> events)<\/span>
                                  \n {<\/span>
                                  \n int<\/span> n =<\/span> EpollCtlHelper<\/span>(<\/span>sockfd,<\/span> events,<\/span> EPOLL_CTL_ADD)<\/span>;<\/span>
                                  \n if<\/span>(<\/span>n <<\/span> 0<\/span>)<\/span>
                                  \n {<\/span>
                                  \n LOG<\/span>(<\/span>LogLevel::<\/span>FATAL)<\/span> <<<\/span> "AddEvents error!"<\/span>;<\/span>
                                  \n }<\/span>
                                  \n }<\/span><\/p>\n

                                  void<\/span> ModEvents<\/span>(<\/span>int<\/span> sockfd,<\/span> uint32_t<\/span> events)<\/span>
                                  \n {<\/span>
                                  \n int<\/span> n =<\/span> EpollCtlHelper<\/span>(<\/span>sockfd,<\/span> events,<\/span> EPOLL_CTL_MOD)<\/span>;<\/span>
                                  \n if<\/span>(<\/span>n <<\/span> 0<\/span>)<\/span>
                                  \n {<\/span>
                                  \n LOG<\/span>(<\/span>LogLevel::<\/span>FATAL)<\/span> <<<\/span> "ModEvents error!"<\/span>;<\/span>
                                  \n }<\/span>
                                  \n }<\/span><\/p>\n

                                  [\u6279\u6ce8]<\/p>\n

                                  \u8f85\u52a9\u51fd\u6570\u4ec5\u8d1f\u8d23\u6267\u884c\u7cfb\u7edf\u8c03\u7528，\u9519\u8bef\u5904\u7406\u7531\u4e0a\u5c42\u4e1a\u52a1\u63a5\u53e3\u8d1f\u8d23，\u662f\u5408\u7406\u7684\u5206\u5c42\u8bbe\u8ba1\u3002\u540c\u65f6\u9700\u8981\u6ce8\u610f：EPOLL_CTL_MOD \u64cd\u4f5c\u5fc5\u987b\u4fdd\u8bc1\u5957\u63a5\u5b57\u5df2\u88ab\u6dfb\u52a0\u81f3 epoll，\u5426\u5219\u4f1a\u8fd4\u56de\u7cfb\u7edf\u9519\u8bef，\u8fd9\u4e5f\u662f Reactor \u5c42\u5148\u505a\u5b58\u5728\u6027\u6821\u9a8c\u7684\u6838\u5fc3\u539f\u56e0\u3002<\/p>\n

                                  1.4 \u53d1\u9001\u903b\u8f91\u4e0e\u63a5\u53e3\u7684\u8054\u52a8<\/h3>\n

                                  \u5728 Sender \u53d1\u9001\u5b8c\u6210\u540e，\u6839\u636e\u8f93\u51fa\u7f13\u51b2\u533a_outbuffer \u662f\u5426\u4e3a\u7a7a\u5224\u65ad\u53d1\u9001\u72b6\u6001，\u81ea\u52a8\u8c03\u7528 EnableReadWrite \u8c03\u6574\u4e8b\u4ef6：<\/p>\n

                                    \n
                                  • \u7f13\u51b2\u533a\u4e3a\u7a7a：\u6570\u636e\u5168\u90e8\u53d1\u9001\u5b8c\u6bd5，\u5173\u95ed\u5199\u4e8b\u4ef6\u5173\u5fc3，\u4ec5\u4fdd\u7559\u8bfb\u4e8b\u4ef6\u3002<\/li>\n
                                  • \u7f13\u51b2\u533a\u975e\u7a7a：\u672c\u6b21\u53d1\u9001\u672a\u5168\u90e8\u5b8c\u6210，\u5f00\u542f\u5199\u4e8b\u4ef6\u5173\u5fc3，\u7b49\u5f85\u4e0b\u4e00\u6b21\u5199\u5c31\u7eea\u65f6\u81ea\u52a8\u7ee7\u7eed\u53d1\u9001\u3002<\/li>\n<\/ul>\n

                                    \/\/ \u53d1\u9001\u5b8c\u6210\u540e\u72b6\u6001\u5224\u65ad<\/span>
                                    \nif<\/span>(<\/span>_outbuffer.<\/span>empty<\/span>(<\/span>)<\/span>)<\/span>
                                    \n _R-><\/span>EnableReadWrite<\/span>(<\/span>_sockfd,<\/span> true<\/span>,<\/span> false<\/span>)<\/span>;<\/span>
                                    \nelse<\/span>
                                    \n _R-><\/span>EnableReadWrite<\/span>(<\/span>_sockfd,<\/span> true<\/span>,<\/span> true<\/span>)<\/span>;<\/span><\/p>\n

                                    \u6574\u4e2a\u53d1\u9001\u6d41\u7a0b\u5b8c\u5168\u7531 epoll \u4e8b\u4ef6\u9a71\u52a8，\u65e0\u9700\u4e0a\u5c42\u4e1a\u52a1\u624b\u52a8\u5faa\u73af\u91cd\u8bd5，\u5b9e\u73b0\u4e86 IO \u4e8b\u4ef6\u4e0e\u4e1a\u52a1\u903b\u8f91\u7684\u89e3\u8026\u3002<\/p>\n

                                    1.5 EnableReadWrite\u77e5\u8bc6\u56fe\u8c31<\/h3>\n

                                    \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                    \n

                                    2 ~> \u534f\u8bae\u5c42\u4e0e\u5f02\u5e38\u5904\u7406\u4fee\u6b63<\/h2>\n

                                    2.1 \u534f\u8bae\u89e3\u6790\u5931\u8d25\u7684\u903b\u8f91\u4fee\u6b63<\/h3>\n

                                    \u65e9\u671f\u591a\u8fdb\u7a0b\u7248\u672c\u7684\u534f\u8bae\u5904\u7406\u4e2d，\u62a5\u6587\u89e3\u6790\u5931\u8d25\u4f1a\u76f4\u63a5\u8c03\u7528 exit (1) \u7ec8\u6b62\u8fdb\u7a0b\u3002\u4f46\u5728\u5355 Reactor \u6a21\u578b\u4e2d，\u6240\u6709\u8fde\u63a5\u5171\u4eab\u540c\u4e00\u4e2a\u8fdb\u7a0b，\u5355\u4e2a\u8fde\u63a5\u7684\u534f\u8bae\u9519\u8bef\u4e0d\u80fd\u5bfc\u81f4\u6574\u4e2a\u670d\u52a1\u9000\u51fa，\u5fc5\u987b\u4fee\u6b63\u8be5\u903b\u8f91\u3002<\/p>\n

                                    \u4fee\u6b63\u540e\u7684 HandlerRequest \u6267\u884c\u903b\u8f91：<\/p>\n

                                  • \u5faa\u73af\u4ece\u8f93\u5165\u6d41\u4e2d\u89e3\u5305\u5b8c\u6574\u62a5\u6587<\/li>\n
                                  • \u89e3\u5305\u8fd4\u56de 0：\u5f53\u524d\u65e0\u5b8c\u6574\u62a5\u6587，\u8bbe\u7f6e\u9519\u8bef\u7801\u4e3a 0，\u8fd4\u56de\u5df2\u7ec4\u88c5\u7684\u54cd\u5e94<\/li>\n
                                  • \u89e3\u5305\u8fd4\u56de – 1：\u534f\u8bae\u89e3\u6790\u5931\u8d25，\u8bbe\u7f6e\u9519\u8bef\u7801\u4e3a – 1，\u8fd4\u56de\u7a7a\u5b57\u7b26\u4e32，\u7ec8\u6b62\u5f53\u524d\u8fde\u63a5\u5904\u7406<\/li>\n

                                    std::<\/span>string HandlerRequest<\/span>(<\/span>std::<\/span>string &<\/span>streamstr,<\/span> int<\/span> *<\/span>code)<\/span>
                                    \n{<\/span>
                                    \n LOG<\/span>(<\/span>LogLevel::<\/span>DEBUG)<\/span> <<<\/span> "Enter HandlerRequest"<\/span>;<\/span>
                                    \n std::<\/span>string resp_package;<\/span>
                                    \n \/\/ 1. \u68c0\u6d4b\u62a5\u6587\u5b8c\u6574\u6027<\/span>
                                    \n while<\/span>(<\/span>true<\/span>)<\/span>
                                    \n {<\/span>
                                    \n std::<\/span>string jsonstring;<\/span>
                                    \n int<\/span> n =<\/span> UnPackage<\/span>(<\/span>streamstr,<\/span> &<\/span>jsonstring)<\/span>;<\/span>
                                    \n if<\/span>(<\/span>n ==<\/span> 0<\/span>)<\/span>
                                    \n {<\/span>
                                    \n *<\/span>code =<\/span> 0<\/span>;<\/span>
                                    \n LOG<\/span>(<\/span>LogLevel::<\/span>DEBUG)<\/span> <<<\/span> "\u89e3\u6790\u5b8c\u6bd5"<\/span>;<\/span>
                                    \n return<\/span> resp_package;<\/span>
                                    \n }<\/span>
                                    \n else<\/span> if<\/span>(<\/span>n ==<\/span> –<\/span>1<\/span>)<\/span>
                                    \n {<\/span>
                                    \n *<\/span>code =<\/span> –<\/span>1<\/span>;<\/span>
                                    \n LOG<\/span>(<\/span>LogLevel::<\/span>DEBUG)<\/span> <<<\/span> "\u534f\u8bae\u89e3\u6790\u5931\u8d25"<\/span>;<\/span>
                                    \n return<\/span> std::<\/span>string<\/span>(<\/span>)<\/span>;<\/span>
                                    \n }<\/span>
                                    \n \/\/ \u53cd\u5e8f\u5217\u5316\u3001\u4e1a\u52a1\u8ba1\u7b97\u3001\u5c01\u88c5\u54cd\u5e94<\/span>
                                    \n \/\/ …<\/span>
                                    \n }<\/span>
                                    \n}<\/span><\/p>\n

                                    [\u6279\u6ce8]<\/p>\n

                                    \u539f\u7b14\u8bb0\u4e2d\u9057\u7559\u7684 exit (1) \u662f\u5178\u578b\u7684\u591a\u8fdb\u7a0b\u5230\u5355 Reactor \u8fc1\u79fb\u7684\u9002\u914d\u9057\u6f0f\u3002\u5355 Reactor \u6a21\u578b\u4e0b，\u5355\u4e2a\u8fde\u63a5\u7684\u5f02\u5e38\u5fc5\u987b\u53ea\u5f71\u54cd\u81ea\u8eab，\u5fc5\u987b\u901a\u8fc7\u8fde\u63a5\u9500\u6bc1\u7684\u65b9\u5f0f\u5904\u7406，\u7edd\u4e0d\u80fd\u7ec8\u6b62\u6574\u4e2a\u670d\u52a1\u8fdb\u7a0b，\u8fd9\u662f\u670d\u52a1\u7aef\u9ad8\u53ef\u7528\u7684\u57fa\u7840\u539f\u5219\u3002<\/p>\n

                                    2.2 \u63a5\u6536\u7aef\u5f02\u5e38\u5904\u7406\u94fe\u8def<\/h3>\n

                                    \u5728 IOHandler \u7684 Recver \u51fd\u6570\u4e2d，\u8c03\u7528\u534f\u8bae\u5904\u7406\u51fd\u6570\u540e，\u6839\u636e\u8fd4\u56de\u7684\u9519\u8bef\u7801\u5206\u652f\u5904\u7406：<\/p>\n

                                      \n
                                    • \u9519\u8bef\u7801\u4e3a 0：\u4e1a\u52a1\u5904\u7406\u6b63\u5e38，\u5c06\u54cd\u5e94\u8ffd\u52a0\u5230\u8f93\u51fa\u7f13\u51b2\u533a<\/li>\n
                                    • \u9519\u8bef\u7801\u975e 0：\u534f\u8bae\u6216\u4e1a\u52a1\u5f02\u5e38，\u8c03\u7528 Excepter \u6267\u884c\u8fde\u63a5\u9500\u6bc1\u6d41\u7a0b<\/li>\n<\/ul>\n

                                      \u540c\u65f6，recv \u7cfb\u7edf\u8c03\u7528\u8fd4\u56de 0（\u5bf9\u7aef\u5173\u95ed\u8fde\u63a5）\u3001\u8fd4\u56de\u8d1f\u503c\u4e14\u9519\u8bef\u7801\u4e0d\u662f EAGAIN\/EWOULDBLOCK \u65f6，\u4e5f\u90fd\u4f1a\u89e6\u53d1 Excepter \u5f02\u5e38\u5904\u7406\u3002<\/p>\n

                                      \n

                                      3 ~> \u8fde\u63a5\u751f\u547d\u5468\u671f：\u5220\u9664\u673a\u5236\u5b9e\u73b0<\/h2>\n

                                      3.1 \u5220\u9664\u64cd\u4f5c\u7684\u65f6\u5e8f\u539f\u5219<\/h3>\n

                                      \u8fde\u63a5\u9500\u6bc1\u5fc5\u987b\u4e25\u683c\u9075\u5faa\u6267\u884c\u987a\u5e8f，\u5426\u5219\u4f1a\u89e6\u53d1\u5185\u6838\u9519\u8bef\u6216\u91ce\u6307\u9488\u95ee\u9898：<\/p>\n

                                    • \u5148\u4ece epoll \u5185\u6838\u4e2d\u79fb\u9664：\u5fc5\u987b\u4fdd\u8bc1\u6587\u4ef6\u63cf\u8ff0\u7b26\u6709\u6548\u65f6\u6267\u884c epoll_ctl \u7684 DEL \u64cd\u4f5c，\u82e5\u5148\u5173\u95ed fd \u518d\u79fb\u9664，epoll \u4f1a\u56e0\u627e\u4e0d\u5230\u6709\u6548 fd \u800c\u62a5\u9519\u3002<\/li>\n
                                    • \u518d\u5173\u95ed\u6587\u4ef6\u63cf\u8ff0\u7b26：\u4ece epoll \u79fb\u9664\u540e，\u8c03\u7528 close \u91ca\u653e\u7cfb\u7edf\u5957\u63a5\u5b57\u8d44\u6e90\u3002<\/li>\n
                                    • \u6700\u540e\u4ece\u7ba1\u7406\u6620\u5c04\u8868\u4e2d\u79fb\u9664：\u786e\u4fdd\u6574\u4e2a\u9500\u6bc1\u8fc7\u7a0b\u4e2d\u90fd\u80fd\u901a\u8fc7_connections \u627e\u5230\u8fde\u63a5\u5bf9\u8c61，\u907f\u514d\u91ce\u6307\u9488\u8bbf\u95ee\u3002<\/li>\n

                                      3.2 Reactor \u5c42 DelConnection \u5b9e\u73b0<\/h3>\n

                                      DelConnection \u662f\u8fde\u63a5\u9500\u6bc1\u7684\u7edf\u4e00\u5165\u53e3，\u9996\u5148\u505a\u5b58\u5728\u6027\u6821\u9a8c，\u7136\u540e\u4e25\u683c\u6309\u7167\u4e0a\u8ff0\u65f6\u5e8f\u6267\u884c\u9500\u6bc1\u3002<\/p>\n

                                      void<\/span> DelConnection<\/span>(<\/span>int<\/span> sockfd)<\/span>
                                      \n{<\/span>
                                      \n if<\/span> (<\/span>!<\/span>IsConnectionExists<\/span>(<\/span>sockfd)<\/span>)<\/span>
                                      \n return<\/span>;<\/span><\/p>\n

                                      LOG<\/span>(<\/span>LogLevel::<\/span>INFO)<\/span> <<<\/span> "delete sockfd: "<\/span> <<<\/span> sockfd;<\/span>
                                      \n \/\/ 1. \u4eceepoll\u4e2d\u79fb\u9664<\/span>
                                      \n _epoller-><\/span>DelEvents<\/span>(<\/span>sockfd)<\/span>;<\/span>
                                      \n \/\/ 2. \u5173\u95ed\u6587\u4ef6\u63cf\u8ff0\u7b26<\/span>
                                      \n _connections[<\/span>sockfd]<\/span>-><\/span>Close<\/span>(<\/span>)<\/span>;<\/span>
                                      \n \/\/ 3. \u4ece\u8fde\u63a5\u7ba1\u7406\u8868\u4e2d\u79fb\u9664<\/span>
                                      \n _connections.<\/span>erase<\/span>(<\/span>sockfd)<\/span>;<\/span>
                                      \n}<\/span><\/p>\n

                                      [\u6279\u6ce8]<\/p>\n

                                      \u539f\u7b14\u8bb0\u4e2d\u8be5\u884c\u65e5\u5fd7\u8bef\u52a0\u4e86std::endl，\u800c\u81ea\u5b9a\u4e49\u65e5\u5fd7\u7c7b\u672a\u91cd\u8f7d endl \u7684\u5904\u7406，\u4f1a\u5bfc\u81f4\u6a21\u677f\u53c2\u6570\u63a8\u5bfc\u5931\u8d25\u3001\u7f16\u8bd1\u62a5\u9519\u3002\u6b63\u786e\u505a\u6cd5\u662f\u76f4\u63a5\u8f93\u51fa\u5b57\u7b26\u4e32\u4e0e\u6574\u6570，\u6362\u884c\u7531\u65e5\u5fd7\u7c7b\u5185\u90e8\u7edf\u4e00\u5904\u7406，\u8fd9\u662f\u81ea\u5b9a\u4e49\u65e5\u5fd7\u7ec4\u4ef6\u7684\u5e38\u89c1\u8e29\u5751\u70b9\u3002<\/p>\n

                                      \u540c\u65f6，Connection \u57fa\u7c7b\u9700\u8981\u5b9a\u4e49\u7eaf\u865a\u51fd\u6570 Close，\u7531\u6d3e\u751f\u7c7b\u5206\u522b\u5b9e\u73b0：<\/p>\n

                                        \n
                                      • IOHandler::Close：\u76f4\u63a5\u8c03\u7528 close \u5173\u95ed\u4e1a\u52a1\u5957\u63a5\u5b57<\/li>\n
                                      • Listener::Close：\u8c03\u7528\u5c01\u88c5\u597d\u7684 TcpSocket::Close \u5173\u95ed\u76d1\u542c\u5957\u63a5\u5b57<\/li>\n<\/ul>\n

                                        3.3 Poller \u5c42 DelEvents \u5b9e\u73b0<\/h3>\n

                                        3.3.1 EPOLL_CTL_DEL \u7684\u7cfb\u7edf\u8c03\u7528\u89c4\u8303<\/h4>\n

                                        epoll_ctl \u7684 EPOLL_CTL_DEL \u64cd\u4f5c，\u5728 Linux 2.6.9 \u4e4b\u540e\u7684\u5185\u6838\u4e2d，event \u53c2\u6570\u53ef\u4ee5\u4f20 nullptr，\u5185\u6838\u4f1a\u5ffd\u7565\u8be5\u53c2\u6570\u3002\u4f20\u5165\u65e0\u6548\u7684\u4e8b\u4ef6\u7ed3\u6784\u4f53\u867d\u591a\u6570\u60c5\u51b5\u4e0b\u4e0d\u4f1a\u62a5\u9519，\u4f46\u5c5e\u4e8e\u4e0d\u89c4\u8303\u5199\u6cd5\u3002<\/p>\n

                                        3.3.2 \u4ee3\u7801\u5b9e\u73b0\u4e0e\u8fb9\u754c\u4fee\u6b63<\/h4>\n

                                        \u5728 EpollCtlHelper \u4e2d\u589e\u52a0\u5bf9 DEL \u64cd\u4f5c\u7684\u7279\u6b8a\u5904\u7406，DEL \u64cd\u4f5c\u76f4\u63a5\u4f20 nullptr，\u4e0d\u586b\u5145 event \u7ed3\u6784\u4f53：<\/p>\n

                                        int<\/span> EpollCtlHelper<\/span>(<\/span>int<\/span> sockfd,<\/span> uint32_t<\/span> events,<\/span> int<\/span> oper)<\/span>
                                        \n{<\/span>
                                        \n if<\/span> (<\/span>oper ==<\/span> EPOLL_CTL_DEL)<\/span>
                                        \n {<\/span>
                                        \n return<\/span> epoll_ctl<\/span>(<\/span>_epfd,<\/span> oper,<\/span> sockfd,<\/span> nullptr<\/span>)<\/span>;<\/span>
                                        \n }<\/span><\/p>\n

                                        struct<\/span> epoll_event<\/span> ev;<\/span>
                                        \n ev.<\/span>events =<\/span> events;<\/span>
                                        \n ev.<\/span>data.<\/span>fd =<\/span> sockfd;<\/span>
                                        \n return<\/span> epoll_ctl<\/span>(<\/span>_epfd,<\/span> oper,<\/span> sockfd,<\/span> &<\/span>ev)<\/span>;<\/span>
                                        \n}<\/span><\/p>\n

                                        void<\/span> DelEvents<\/span>(<\/span>int<\/span> sockfd)<\/span>
                                        \n{<\/span>
                                        \n EpollCtlHelper<\/span>(<\/span>sockfd,<\/span> 0<\/span>,<\/span> EPOLL_CTL_DEL)<\/span>;<\/span>
                                        \n}<\/span><\/p>\n

                                        [\u6279\u6ce8]<\/p>\n

                                        \u539f\u7b14\u8bb0\u4e2d\u76f4\u63a5\u4f20 0 \u4f5c\u4e3a events \u53c2\u6570\u7ed9 DEL \u64cd\u4f5c，\u867d\u529f\u80fd\u4e0a\u4e0d\u4f1a\u51fa\u9519，\u4f46\u4e0d\u7b26\u5408\u7cfb\u7edf\u8c03\u7528\u6700\u4f73\u5b9e\u8df5\u3002\u6807\u51c6\u505a\u6cd5\u662f DEL \u64cd\u4f5c\u76f4\u63a5\u4f20\u5165 nullptr \u4f5c\u4e3a event \u53c2\u6570，\u907f\u514d\u65e0\u610f\u4e49\u7684\u53c2\u6570\u4f20\u9012，\u540c\u65f6\u517c\u5bb9\u6240\u6709\u5185\u6838\u7248\u672c\u3002<\/p>\n

                                        \n

                                        4 ~> \u6838\u5fc3\u4ee3\u7801\u7ec6\u8282\u4e0e\u8fb9\u754c\u573a\u666f<\/h2>\n

                                        4.1 \u5199\u4e8b\u4ef6\u4f7f\u80fd\u7684\u4e24\u79cd\u89e6\u53d1\u65b9\u6848<\/h3>\n

                                        \u5f53\u4e1a\u52a1\u5c42\u4ea7\u751f\u5f85\u53d1\u9001\u6570\u636e\u65f6，\u6709\u4e24\u79cd\u65b9\u5f0f\u89e6\u53d1\u53d1\u9001\u6d41\u7a0b：<\/p>\n

                                          \n
                                        • \u65b9\u6848\u4e00：\u76f4\u63a5\u8c03\u7528 Sender：\u6570\u636e\u5199\u5165\u8f93\u51fa\u7f13\u51b2\u533a\u540e，\u7acb\u523b\u8c03\u7528 Sender \u5c1d\u8bd5\u53d1\u9001\u3002\u4e00\u6b21\u6027\u53d1\u5b8c\u5219\u5173\u95ed\u5199\u4e8b\u4ef6，\u6ca1\u53d1\u5b8c\u5219\u81ea\u52a8\u5f00\u542f\u5199\u4e8b\u4ef6\u7b49\u5f85\u4e0b\u4e00\u6b21\u5c31\u7eea\u3002\u4f18\u70b9\u662f\u5ef6\u8fdf\u4f4e，\u6570\u636e\u4ea7\u751f\u540e\u7acb\u5373\u5c1d\u8bd5\u53d1\u9001\u3002<\/li>\n
                                        • \u65b9\u6848\u4e8c：\u4ec5\u4f7f\u80fd\u5199\u4e8b\u4ef6：\u6570\u636e\u5199\u5165\u8f93\u51fa\u7f13\u51b2\u533a\u540e，\u4e0d\u76f4\u63a5\u8c03\u7528\u53d1\u9001，\u4ec5\u8c03\u7528 EnableReadWrite \u5f00\u542f\u5199\u4e8b\u4ef6\u3002\u7531\u4e8e epoll \u7684\u7279\u6027，\u4f7f\u80fd EPOLLOUT \u65f6\u4f1a\u7acb\u523b\u89e6\u53d1\u4e00\u6b21\u5199\u5c31\u7eea\u4e8b\u4ef6，\u7531\u4e8b\u4ef6\u5faa\u73af\u81ea\u52a8\u8c03\u7528 Sender\u3002\u4f18\u70b9\u662f\u4ee3\u7801\u7edf\u4e00，\u6240\u6709\u53d1\u9001\u90fd\u7531\u4e8b\u4ef6\u5faa\u73af\u9a71\u52a8\u3002<\/li>\n<\/ul>\n

                                          \/\/ \u65b9\u6848\u4e00：\u76f4\u63a5\u89e6\u53d1\u53d1\u9001<\/span>
                                          \nif<\/span>(<\/span>!<\/span>_outbuffer.<\/span>empty<\/span>(<\/span>)<\/span>)<\/span>
                                          \n Sender<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

                                          \/\/ \u65b9\u6848\u4e8c：\u4ec5\u4f7f\u80fd\u5199\u4e8b\u4ef6，\u7531\u4e8b\u4ef6\u5faa\u73af\u89e6\u53d1<\/span>
                                          \nif<\/span>(<\/span>!<\/span>_outbuffer.<\/span>empty<\/span>(<\/span>)<\/span>)<\/span>
                                          \n _R-><\/span>EnableReadWrite<\/span>(<\/span>_sockfd,<\/span> true<\/span>,<\/span> true<\/span>)<\/span>;<\/span><\/p>\n

                                          [\u6279\u6ce8]<\/p>\n

                                          epoll \u7684 EPOLLOUT \u4e8b\u4ef6\u5728\u4f7f\u80fd\u65f6\u9ed8\u8ba4\u89e6\u53d1\u4e00\u6b21\u5c31\u7eea，\u672c\u8d28\u662f\u56e0\u4e3a\u5199\u7f13\u51b2\u533a\u9ed8\u8ba4\u5904\u4e8e\u7a7a\u95f2\u72b6\u6001，\u53ea\u8981\u4f7f\u80fd\u5199\u4e8b\u4ef6\u5c31\u6ee1\u8db3\u5c31\u7eea\u6761\u4ef6\u3002\u8fd9\u4e00\u7279\u6027\u662f\u65b9\u6848\u4e8c\u80fd\u591f\u6210\u7acb\u7684\u5e95\u5c42\u57fa\u7840，\u4e5f\u662f epoll \u5199\u4e8b\u4ef6\u7684\u6838\u5fc3\u7279\u6027，\u5c5e\u4e8e\u9ad8\u9891\u8003\u70b9\u3002<\/p>\n

                                          4.2 \u62a5\u6587\u65f6\u5e8f\u4fdd\u8bc1<\/h3>\n

                                          \u5355 Reactor \u6a21\u578b\u4e0b，\u6240\u6709 IO \u4e8b\u4ef6\u548c\u4e1a\u52a1\u5904\u7406\u90fd\u5728\u540c\u4e00\u4e2a\u7ebf\u7a0b \/ \u8fdb\u7a0b\u4e2d\u4e32\u884c\u6267\u884c，\u56e0\u6b64\u8bf7\u6c42\u7684\u63a5\u6536\u3001\u5904\u7406\u3001\u54cd\u5e94\u7684\u987a\u5e8f\u4e25\u683c\u4e00\u81f4：\u5148\u5230\u8fbe\u7684\u8bf7\u6c42\u5148\u5904\u7406，\u5148\u5904\u7406\u7684\u8bf7\u6c42\u5148\u54cd\u5e94，\u4e0d\u5b58\u5728\u65f6\u5e8f\u9519\u4e71\u95ee\u9898\u3002 \u8fd9\u4e5f\u662f\u5355 Reactor \u6a21\u578b\u7684\u6838\u5fc3\u4f18\u52bf\u4e4b\u4e00：\u65e0\u9700\u8003\u8651\u5e76\u53d1\u65f6\u5e8f\u95ee\u9898，\u4e1a\u52a1\u903b\u8f91\u5f00\u53d1\u7b80\u5355，\u65e0\u9501\u5f00\u9500\u3002<\/p>\n

                                          4.3 \u4e8b\u4ef6\u6d3e\u53d1 LoopOnce \u903b\u8f91<\/h3>\n

                                          LoopOnce \u662f Reactor \u7684\u5355\u6b21\u4e8b\u4ef6\u5faa\u73af，\u6838\u5fc3\u6d41\u7a0b：<\/p>\n

                                        • \u8c03\u7528 epoll_wait \u7b49\u5f85\u4e8b\u4ef6\u5c31\u7eea，\u8d85\u65f6\u65f6\u95f4\u7531\u53c2\u6570\u63a7\u5236<\/li>\n
                                        • \u904d\u5386\u6240\u6709\u5c31\u7eea\u4e8b\u4ef6<\/li>\n
                                        • \u5bf9 EPOLLERR\u3001EPOLLHUP \u9519\u8bef\u4e8b\u4ef6，\u5c06\u5176\u8f6c\u6362\u4e3a\u8bfb\u5199\u4e8b\u4ef6，\u7edf\u4e00\u8d70\u8bfb\u5199\u7684\u5f02\u5e38\u5904\u7406\u5206\u652f<\/li>\n
                                        • \u8bfb\u4e8b\u4ef6\u5c31\u7eea\u4e14\u8fde\u63a5\u5b58\u5728，\u8c03\u7528\u5bf9\u5e94\u8fde\u63a5\u7684 Recver<\/li>\n
                                        • \u5199\u4e8b\u4ef6\u5c31\u7eea\u4e14\u8fde\u63a5\u5b58\u5728，\u8c03\u7528\u5bf9\u5e94\u8fde\u63a5\u7684 Sender<\/li>\n

                                          void<\/span> LoopOnce<\/span>(<\/span>int<\/span> timeout)<\/span>
                                          \n{<\/span>
                                          \n int<\/span> n =<\/span> _epoller-><\/span>WaitEvents<\/span>(<\/span>revs,<\/span> gnum,<\/span> timeout)<\/span>;<\/span>
                                          \n for<\/span>(<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> n;<\/span> i++<\/span>)<\/span>
                                          \n {<\/span>
                                          \n int<\/span> sockfd =<\/span> revs[<\/span>i]<\/span>.<\/span>data.<\/span>fd;<\/span>
                                          \n uint32_t<\/span> revents =<\/span> revs[<\/span>i]<\/span>.<\/span>events;<\/span><\/p>\n

                                          if<\/span> (<\/span>(<\/span>revents &<\/span> EPOLLERR)<\/span> |<\/span> (<\/span>revents &<\/span> EPOLLHUP)<\/span>)<\/span>
                                          \n revents =<\/span> (<\/span>EPOLLIN |<\/span> EPOLLOUT)<\/span>;<\/span> \/\/ \u9519\u8bef\u8f6c\u6362\u4e3a\u8bfb\u5199\u4e8b\u4ef6，\u4ea4\u7531\u540e\u7eed\u903b\u8f91\u5904\u7406\u5f02\u5e38<\/span><\/p>\n

                                          if<\/span> (<\/span>(<\/span>revents &<\/span> EPOLLIN)<\/span> &&<\/span> IsConnectionExists<\/span>(<\/span>sockfd)<\/span>)<\/span>
                                          \n _connections[<\/span>sockfd]<\/span>-><\/span>Recver<\/span>(<\/span>)<\/span>;<\/span>
                                          \n if<\/span> (<\/span>(<\/span>revents &<\/span> EPOLLOUT)<\/span> &&<\/span> IsConnectionExists<\/span>(<\/span>sockfd)<\/span>)<\/span>
                                          \n _connections[<\/span>sockfd]<\/span>-><\/span>Sender<\/span>(<\/span>)<\/span>;<\/span>
                                          \n }<\/span>
                                          \n}<\/span><\/p>\n

                                          [\u6279\u6ce8]<\/p>\n

                                          \u5c06\u9519\u8bef\u4e8b\u4ef6\u8f6c\u6362\u4e3a\u8bfb\u5199\u4e8b\u4ef6\u662f\u975e\u5e38\u5de7\u5999\u7684\u8bbe\u8ba1：\u9519\u8bef\u53d1\u751f\u65f6，\u8bfb\u5199\u64cd\u4f5c\u5fc5\u7136\u4f1a\u8fd4\u56de\u9519\u8bef，\u8fdb\u800c\u89e6\u53d1 Excepter \u9500\u6bc1\u8fde\u63a5\u3002\u8fd9\u6837\u5c31\u4e0d\u9700\u8981\u5355\u72ec\u7f16\u5199\u9519\u8bef\u4e8b\u4ef6\u7684\u5904\u7406\u903b\u8f91，\u6240\u6709\u5f02\u5e38\u90fd\u6536\u655b\u5230\u8bfb\u5199\u7684\u9519\u8bef\u5206\u652f\u4e2d，\u7b80\u5316\u4e86\u4ee3\u7801\u7ed3\u6784\u3002<\/p>\n

                                          \n

                                          5 ~> \u8fde\u63a5\u4fdd\u6d3b\u673a\u5236<\/h2>\n

                                          5.1 \u8fde\u63a5\u6d3b\u8dc3\u65f6\u95f4\u6233\u8bbe\u8ba1<\/h3>\n

                                          \u7f51\u7edc\u670d\u52a1\u4e2d\u5b58\u5728\u5927\u91cf\u534a\u6253\u5f00\u8fde\u63a5\u3001\u9759\u9ed8\u8fde\u63a5，\u957f\u671f\u5360\u7528\u6587\u4ef6\u63cf\u8ff0\u7b26\u8d44\u6e90，\u9700\u8981\u901a\u8fc7\u4fdd\u6d3b\u673a\u5236\u6dd8\u6c70\u8d85\u65f6\u4e0d\u6d3b\u8dc3\u7684\u8fde\u63a5\u3002 \u5b9e\u73b0\u57fa\u7840\u662f\u5728 Connection \u57fa\u7c7b\u4e2d\u589e\u52a0_lasttimestamp\u5b57\u6bb5，\u8bb0\u5f55\u8fde\u63a5\u6700\u8fd1\u4e00\u6b21\u6d3b\u8dc3\u7684\u65f6\u95f4\u6233，\u540c\u65f6\u63d0\u4f9b Update \u65b9\u6cd5\u66f4\u65b0\u65f6\u95f4\u6233\u3002<\/p>\n

                                          class<\/span> Connection<\/span>
                                          \n{<\/span>
                                          \n \/\/ \u5176\u4ed6\u6210\u5458\u7701\u7565<\/span>
                                          \nprotected<\/span>:<\/span>
                                          \n uint64_t<\/span> _lasttimestamp;<\/span> \/\/ \u6700\u8fd1\u6d3b\u8dc3\u65f6\u95f4\u6233<\/span>
                                          \npublic<\/span>:<\/span>
                                          \n void<\/span> Update<\/span>(<\/span>)<\/span>
                                          \n {<\/span>
                                          \n _lasttimestamp =<\/span> CurrentTimeStamp<\/span>(<\/span>)<\/span>;<\/span>
                                          \n }<\/span>
                                          \n}<\/span>;<\/span><\/p>\n

                                          \u5176\u4e2d CurrentTimeStamp \u901a\u8fc7\u7cfb\u7edf\u8c03\u7528 time \u83b7\u53d6\u5f53\u524d\u79d2\u7ea7\u65f6\u95f4\u6233，\u8fd4\u56de uint64_t \u7c7b\u578b\u907f\u514d\u6ea2\u51fa\u3002<\/p>\n

                                          5.2 \u4fdd\u6d3b\u68c0\u6d4b\u7684\u6267\u884c\u65f6\u673a<\/h3>\n

                                          \u65f6\u95f4\u6233\u66f4\u65b0\u65f6\u673a：\u6bcf\u6b21 Recver\u3001Sender \u88ab\u8c03\u7528\u65f6，\u5f00\u5934\u5148\u8c03\u7528 Update () \u66f4\u65b0\u65f6\u95f4\u6233，\u4ee3\u8868\u8be5\u8fde\u63a5\u5f53\u524d\u5904\u4e8e\u6d3b\u8dc3\u72b6\u6001\u3002 \u68c0\u6d4b\u65f6\u673a：\u5c06 Dispatcher \u7684 epoll_wait \u8d85\u65f6\u8bbe\u7f6e\u4e3a\u56fa\u5b9a\u503c（\u5982 1000ms），\u6bcf\u6b21 LoopOnce \u7ed3\u675f\u540e，\u6267\u884c\u4e00\u6b21 ConnectionKeepAlive \u68c0\u6d4b\u3002<\/p>\n

                                          void<\/span> Dispatcher<\/span>(<\/span>)<\/span>
                                          \n{<\/span>
                                          \n int<\/span> timeout =<\/span> 1000<\/span>;<\/span>
                                          \n while<\/span>(<\/span>true<\/span>)<\/span>
                                          \n {<\/span>
                                          \n LoopOnce<\/span>(<\/span>timeout)<\/span>;<\/span>
                                          \n ConnectionKeepAlive<\/span>(<\/span>)<\/span>;<\/span>
                                          \n }<\/span>
                                          \n}<\/span><\/p>\n

                                          5.3 \u6dd8\u6c70\u7b56\u7565\u7684\u5de5\u7a0b\u5316\u6269\u5c55<\/h3>\n

                                          \u57fa\u7840\u5b9e\u73b0\u53ef\u4ee5\u904d\u5386_connections \u6620\u5c04\u8868，\u9010\u4e2a\u6bd4\u8f83\u65f6\u95f4\u6233，\u8d85\u65f6\u5219\u8c03\u7528 DelConnection \u9500\u6bc1\u3002 \u5de5\u7a0b\u7ea7\u4f18\u5316\u65b9\u6848：\u4f7f\u7528\u6700\u5c0f\u5806\u7ba1\u7406\u8fde\u63a5\u7684\u8d85\u65f6\u65f6\u95f4，\u5806\u9876\u5c31\u662f\u6700\u65e9\u8d85\u65f6\u7684\u8fde\u63a5，\u6bcf\u6b21\u53ea\u9700\u8981\u68c0\u67e5\u5806\u9876\u662f\u5426\u8d85\u65f6\u5373\u53ef，\u5c06\u68c0\u6d4b\u590d\u6742\u5ea6\u4ece O (n) \u964d\u5230 O (1)\u3002\u9700\u8981\u6ce8\u610f：\u8fde\u63a5\u6bcf\u6b21\u6d3b\u8dc3\u65f6\u90fd\u8981\u66f4\u65b0\u5806\u4e2d\u7684\u4f4d\u7f6e，\u4fdd\u8bc1\u5806\u7684\u6709\u5e8f\u6027\u3002<\/p>\n

                                          \n

                                          6 ~> Reactor \u6a21\u5f0f\u6838\u5fc3\u7406\u8bba<\/h2>\n

                                          6.1 \u53cd\u5e94\u5806\u6a21\u5f0f\u7684\u672c\u8d28<\/h3>\n

                                          Reactor \u53cd\u5e94\u5806\u6a21\u5f0f\u662f\u4e00\u79cd\u4e8b\u4ef6\u9a71\u52a8\u7684 IO \u5904\u7406\u67b6\u6784，\u6838\u5fc3\u601d\u60f3\u662f：<\/p>\n

                                            \n
                                          • \u9884\u5148\u4e3a\u6bcf\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u6ce8\u518c\u5bf9\u5e94\u7684\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570<\/li>\n
                                          • \u901a\u8fc7 IO \u591a\u8def\u590d\u7528（epoll\/select\/poll）\u7edf\u4e00\u76d1\u542c\u4e8b\u4ef6<\/li>\n
                                          • \u5f53\u67d0\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u4e8b\u4ef6\u5c31\u7eea\u65f6，\u89e6\u53d1\u5bf9\u5e94\u7684\u56de\u8c03\u51fd\u6570\u6267\u884c\u5bf9\u5e94\u7684 IO \u64cd\u4f5c<\/li>\n<\/ul>\n

                                            \u53ef\u4ee5\u7c7b\u6bd4\u4e3a \u201c\u6253\u5730\u9f20\u201d \u6a21\u578b：\u6bcf\u4e2a\u8fde\u63a5\u662f\u4e00\u4e2a\u5730\u6d1e，\u4e8b\u4ef6\u5c31\u7eea\u5c31\u662f\u5730\u9f20\u9732\u5934，\u56de\u8c03\u51fd\u6570\u5c31\u662f\u9524\u5b50，\u54ea\u4e2a\u5730\u9f20\u9732\u5934\u5c31\u6253\u54ea\u4e2a\u3002<\/p>\n

                                            6.2 \u534a\u540c\u6b65\u534a\u5f02\u6b65\u7279\u6027<\/h3>\n

                                            Reactor \u662f\u5178\u578b\u7684\u534a\u540c\u6b65\u534a\u5f02\u6b65\u67b6\u6784：<\/p>\n

                                              \n
                                            • \u5f02\u6b65：\u4e8b\u4ef6\u7684\u5230\u6765\u662f\u5f02\u6b65\u7684，\u8fde\u63a5\u5efa\u7acb\u3001\u6570\u636e\u5230\u8fbe\u7684\u65f6\u95f4\u5b8c\u5168\u4e0d\u53ef\u9884\u77e5，\u7531\u591a\u8def\u590d\u7528\u5668\u7edf\u4e00\u76d1\u542c\u3002<\/li>\n
                                            • \u540c\u6b65：\u4e8b\u4ef6\u89e6\u53d1\u540e\u7684 IO \u64cd\u4f5c\u3001\u4e1a\u52a1\u5904\u7406\u662f\u540c\u6b65\u6267\u884c\u7684，\u5728\u5f53\u524d\u6267\u884c\u6d41\u4e2d\u5b8c\u6210，\u4e0d\u4f1a\u5f02\u6b65\u8f6c\u4ea4\u3002<\/li>\n<\/ul>\n

                                              6.3 \u5355 Reactor \u4e0e\u591a Reactor \u7684\u5178\u578b\u5e94\u7528<\/h3>\n
                                                \n
                                              • \u5355 Reactor：\u6240\u6709\u4e8b\u4ef6\u76d1\u542c\u3001IO \u5904\u7406\u3001\u4e1a\u52a1\u903b\u8f91\u90fd\u5728\u540c\u4e00\u4e2a\u6267\u884c\u6d41\u4e2d\u5b8c\u6210\u3002\u5178\u578b\u4ee3\u8868\u662f Redis，\u56e0\u4e3a Redis \u662f\u5185\u5b58\u6570\u636e\u5e93，\u4e1a\u52a1\u5904\u7406\u6781\u5feb，\u74f6\u9888\u4e0d\u5728 CPU，\u5355 Reactor \u8db3\u4ee5\u652f\u6491\u9ad8\u5e76\u53d1，\u4e14\u907f\u514d\u4e86\u9501\u7684\u5f00\u9500\u3002<\/li>\n
                                              • \u591a Reactor：\u5c06\u76d1\u542c\u3001IO \u5904\u7406\u3001\u4e1a\u52a1\u62c6\u5206\u5230\u591a\u4e2a\u6267\u884c\u6d41\u4e2d，\u5145\u5206\u5229\u7528\u591a\u6838 CPU\u3002\u5178\u578b\u4ee3\u8868\u662f Nginx，\u91c7\u7528\u591a\u8fdb\u7a0b Reactor \u67b6\u6784\u3002<\/li>\n<\/ul>\n

                                                [\u6279\u6ce8]<\/p>\n

                                                \u5b58\u5728\u4e00\u79cd\u5e38\u89c1\u9519\u8bef\u65b9\u6848：\u5355 Reactor + \u540e\u7aef\u7ebf\u7a0b\u6c60\u3002\u8be5\u65b9\u6848\u5c06\u4e1a\u52a1\u5904\u7406\u4e22\u7ed9\u7ebf\u7a0b\u6c60，\u4f46\u4f1a\u5bfc\u81f4\u8bf7\u6c42\u5e94\u7b54\u7684\u65f6\u5e8f\u65e0\u6cd5\u4fdd\u8bc1：\u7ebf\u7a0b\u8c03\u5ea6\u987a\u5e8f\u4e0d\u53ef\u63a7，\u540e\u5230\u7684\u8bf7\u6c42\u53ef\u80fd\u5148\u5904\u7406\u5b8c，\u9020\u6210\u54cd\u5e94\u4e71\u5e8f\u3002\u56e0\u6b64\u8be5\u65b9\u6848\u5728\u4e25\u683c\u65f6\u5e8f\u8981\u6c42\u7684\u573a\u666f\u4e0b\u4e0d\u63a8\u8350\u4f7f\u7528\u3002<\/p>\n

                                                \n

                                                7 ~> \u591a\u8fdb\u7a0b Reactor \u6539\u9020\u65b9\u6848<\/h2>\n

                                                7.1 \u6838\u5fc3\u67b6\u6784：Master-Slaver \u8fdb\u7a0b\u6c60<\/h3>\n

                                                \u591a\u8fdb\u7a0b Reactor \u91c7\u7528 Master-Slaver \u67b6\u6784：<\/p>\n

                                              • Master \u8fdb\u7a0b\u8d1f\u8d23\u521b\u5efa\u76d1\u542c\u5957\u63a5\u5b57，\u521b\u5efa\u591a\u4e2a Slaver \u5b50\u8fdb\u7a0b，\u4ee5\u53ca\u4e0e\u6bcf\u4e2a\u5b50\u8fdb\u7a0b\u5efa\u7acb\u533f\u540d\u7ba1\u9053\u901a\u4fe1\u3002<\/li>\n
                                              • \u76d1\u542c\u5957\u63a5\u5b57\u7531\u6240\u6709\u5b50\u8fdb\u7a0b\u7ee7\u627f，\u4f46\u53ea\u6709 Master \u8fdb\u7a0b\u5c06\u5176\u52a0\u5165\u81ea\u5df1\u7684 Reactor \u8fdb\u884c\u76d1\u542c\u3002<\/li>\n
                                              • \u5f53\u6709\u65b0\u8fde\u63a5\u5230\u6765\u65f6，Master \u8fdb\u7a0b\u4e0d\u6267\u884c accept，\u800c\u662f\u901a\u8fc7\u7ba1\u9053\u5411\u9009\u4e2d\u7684 Slaver \u5b50\u8fdb\u7a0b\u53d1\u9001\u901a\u77e5\u3002<\/li>\n
                                              • Slaver \u5b50\u8fdb\u7a0b\u7684 Reactor \u76d1\u542c\u7ba1\u9053\u8bfb\u7aef，\u6536\u5230\u901a\u77e5\u540e，\u6267\u884c accept \u83b7\u53d6\u65b0\u8fde\u63a5，\u5c06\u8fde\u63a5\u52a0\u5165\u81ea\u5df1\u7684 Reactor \u8fdb\u884c\u7ba1\u7406\u3002<\/li>\n

                                                7.2 One Thread One Loop \u8bbe\u8ba1\u601d\u60f3<\/h3>\n

                                                \u6bcf\u4e2a Slaver \u8fdb\u7a0b\u90fd\u6709\u81ea\u5df1\u72ec\u7acb\u7684 Reactor\u3001\u72ec\u7acb\u7684\u4e8b\u4ef6\u5faa\u73af，\u4ece\u8fde\u63a5\u5efa\u7acb\u5230\u8fde\u63a5\u9500\u6bc1\u5168\u751f\u547d\u5468\u671f\u90fd\u5728\u540c\u4e00\u4e2a\u8fdb\u7a0b\u5185\u5b8c\u6210，\u8fd9\u5c31\u662f \u201cOne Thread One Loop\u201d（\u4e00\u4e2a\u6267\u884c\u6d41\u4e00\u4e2a\u4e8b\u4ef6\u5faa\u73af），\u662f\u670d\u52a1\u5668\u9886\u57df\u516c\u8ba4\u7684\u4f18\u79c0\u8bbe\u8ba1\u3002 \u8be5\u8bbe\u8ba1\u7684\u6838\u5fc3\u4f18\u52bf：<\/p>\n

                                                  \n
                                                • \u65e0\u9501：\u6bcf\u4e2a\u8fdb\u7a0b\u53ea\u7ba1\u7406\u81ea\u5df1\u7684\u8fde\u63a5，\u6ca1\u6709\u5171\u4eab\u8d44\u6e90，\u4e0d\u9700\u8981\u9501<\/li>\n
                                                • \u65f6\u5e8f\u4fdd\u8bc1：\u5355\u4e2a\u8fde\u63a5\u7684\u6240\u6709\u64cd\u4f5c\u90fd\u5728\u540c\u4e00\u4e2a\u8fdb\u7a0b\u5185，\u65f6\u5e8f\u4e25\u683c\u6709\u5e8f<\/li>\n
                                                • \u6545\u969c\u9694\u79bb：\u5355\u4e2a\u5b50\u8fdb\u7a0b\u5d29\u6e83\u4e0d\u5f71\u54cd\u5176\u4ed6\u5b50\u8fdb\u7a0b，\u670d\u52a1\u6574\u4f53\u53ef\u7528<\/li>\n<\/ul>\n

                                                  7.3 \u8d1f\u8f7d\u5747\u8861\u4e0e\u8fde\u63a5\u5206\u53d1\u903b\u8f91<\/h3>\n

                                                  Master \u8fdb\u7a0b\u5206\u53d1\u8fde\u63a5\u65f6，\u53ef\u4ee5\u91c7\u7528\u8f6e\u8be2\u3001\u968f\u673a\u7b49\u8d1f\u8f7d\u5747\u8861\u7b56\u7565，\u9009\u62e9\u4e00\u4e2a Slaver \u5b50\u8fdb\u7a0b，\u5411\u5176\u7ba1\u9053\u5199\u5165\u6570\u636e，\u5524\u9192\u5bf9\u5e94\u7684\u5b50\u8fdb\u7a0b\u6267\u884c accept\u3002 \u5b50\u8fdb\u7a0b\u88ab\u5524\u9192\u540e：<\/p>\n

                                                • \u8bfb\u53d6\u7ba1\u9053\u4e2d\u7684\u6570\u636e\u5e76\u6e05\u7a7a<\/li>\n
                                                • \u8c03\u7528 accept \u4ece\u76d1\u542c\u5957\u63a5\u5b57\u83b7\u53d6\u65b0\u8fde\u63a5<\/li>\n
                                                • \u5c06\u65b0\u8fde\u63a5\u5c01\u88c5\u540e\u52a0\u5165\u81ea\u5df1\u7684 Reactor \u6574\u4e2a\u8fc7\u7a0b\u4e2d，\u76d1\u542c\u5957\u63a5\u5b57\u7531\u6240\u6709\u8fdb\u7a0b\u5171\u4eab，\u4f46\u901a\u8fc7\u7ba1\u9053\u901a\u77e5\u7684\u65b9\u5f0f\u907f\u514d\u4e86\u591a\u4e2a\u8fdb\u7a0b\u540c\u65f6 accept \u7684\u60ca\u7fa4\u95ee\u9898\u3002<\/li>\n
                                                  \n

                                                  8 ~> \u591a\u7ebf\u7a0b Reactor \u6539\u9020\u65b9\u6848<\/h2>\n

                                                  8.1 \u65b9\u6848\u4e00：\u7ba1\u9053\u901a\u77e5\u5f0f\u591a\u7ebf\u7a0b<\/h3>\n

                                                  \u8be5\u65b9\u6848\u4e0e\u591a\u8fdb\u7a0b\u67b6\u6784\u903b\u8f91\u5b8c\u5168\u4e00\u81f4，\u5c06\u8fdb\u7a0b\u66ff\u6362\u4e3a\u7ebf\u7a0b：<\/p>\n

                                                    \n
                                                  • \u4e3b\u7ebf\u7a0b\u4f5c\u4e3a Master，\u76d1\u542c listen \u5957\u63a5\u5b57<\/li>\n
                                                  • \u591a\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u4f5c\u4e3a Slaver，\u6bcf\u4e2a\u7ebf\u7a0b\u62e5\u6709\u72ec\u7acb\u7684 Reactor<\/li>\n
                                                  • \u4e3b\u7ebf\u7a0b\u4e0e\u5de5\u4f5c\u7ebf\u7a0b\u4e4b\u95f4\u901a\u8fc7\u7ba1\u9053\u901a\u4fe1，\u5206\u53d1\u8fde\u63a5<\/li>\n<\/ul>\n

                                                    \u4e0e\u591a\u8fdb\u7a0b\u7684\u533a\u522b：\u7ebf\u7a0b\u5171\u4eab\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868，\u56e0\u6b64\u4e3b\u7ebf\u7a0b\u53ef\u4ee5\u5148 accept \u83b7\u53d6\u65b0\u8fde\u63a5\u7684 fd，\u518d\u901a\u8fc7\u7ba1\u9053\u5c06 fd \u6570\u503c\u4f20\u9012\u7ed9\u5de5\u4f5c\u7ebf\u7a0b，\u5de5\u4f5c\u7ebf\u7a0b\u76f4\u63a5\u5c06 fd \u52a0\u5165\u81ea\u5df1\u7684 Reactor \u5373\u53ef\u3002 \u8be5\u65b9\u6848\u7684\u7f3a\u70b9：\u7ba1\u9053\u5c5e\u4e8e\u5185\u6838\u7ea7\u901a\u4fe1，\u9700\u8981\u7ecf\u5386\u7528\u6237\u6001\u5230\u5185\u6838\u6001\u7684\u6570\u636e\u62f7\u8d1d，\u5bf9\u4e8e\u591a\u7ebf\u7a0b\u573a\u666f\u6765\u8bf4\u5f00\u9500\u504f\u5927，\u4e0d\u591f\u8f7b\u91cf\u5316\u3002<\/p>\n

                                                    8.2 \u65b9\u6848\u4e8c：eventfd \u4e8b\u4ef6\u901a\u77e5\u673a\u5236<\/h3>\n

                                                    8.2.1 eventfd \u6838\u5fc3\u7279\u6027<\/h4>\n

                                                    eventfd \u662f Linux \u63d0\u4f9b\u7684\u8f7b\u91cf\u7ea7\u4e8b\u4ef6\u901a\u77e5\u673a\u5236，\u672c\u8d28\u662f\u5185\u6838\u7ef4\u62a4\u7684\u4e00\u4e2a 64 \u4f4d\u8ba1\u6570\u5668，\u4ee5\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u5f62\u5f0f\u63d0\u4f9b\u7ed9\u7528\u6237\u6001\u3002 \u6838\u5fc3\u7279\u6027：<\/p>\n

                                                      \n
                                                    • \u4f4e\u5f00\u9500：\u4ec5\u7ef4\u62a4\u8ba1\u6570\u5668，\u5185\u6838\u6210\u672c\u8fdc\u4f4e\u4e8e\u7ba1\u9053<\/li>\n
                                                    • \u652f\u6301\u591a\u8def\u590d\u7528：\u53ef\u4ee5\u52a0\u5165 epoll\u3001poll\u3001select \u8fdb\u884c\u76d1\u542c<\/li>\n
                                                    • \u539f\u5b50\u6027：\u8bfb\u5199\u64cd\u4f5c\u90fd\u662f\u539f\u5b50\u7684，\u9002\u5408\u9ad8\u5e76\u53d1\u573a\u666f<\/li>\n
                                                    • \u4ec5\u901a\u77e5\u4e0d\u4f20\u8f93\u6570\u636e：\u53ea\u80fd\u4f20\u9012\u4e8b\u4ef6\u4fe1\u53f7，\u4e0d\u80fd\u4f20\u9012\u5177\u4f53\u6d88\u606f\u5185\u5bb9<\/li>\n<\/ul>\n

                                                      8.2.2 eventfd \u4e24\u79cd\u5de5\u4f5c\u6a21\u5f0f<\/h4>\n
                                                    • \u666e\u901a\u6a21\u5f0f（\u9ed8\u8ba4）：\u8bfb\u53d6\u64cd\u4f5c\u4f1a\u4e00\u6b21\u6027\u6e05\u7a7a\u8ba1\u6570\u5668\u7684\u503c，\u8fd4\u56de\u7d2f\u52a0\u540e\u7684\u603b\u548c\u3002\u9002\u5408\u5355\u7eaf\u7684\u4e8b\u4ef6\u901a\u77e5\u573a\u666f，\u4e00\u6b21\u8bfb\u53d6\u5904\u7406\u6240\u6709\u5f85\u5904\u7406\u4e8b\u4ef6\u3002<\/li>\n
                                                    • \u4fe1\u53f7\u91cf\u6a21\u5f0f（EFD_SEMAPHORE）：\u6bcf\u6b21\u8bfb\u53d6\u53ea\u4f1a\u5c06\u8ba1\u6570\u5668\u51cf 1，\u8fd4\u56de\u503c\u56fa\u5b9a\u4e3a 1\u3002\u9002\u5408\u9700\u8981\u7cbe\u786e\u7edf\u8ba1\u4e8b\u4ef6\u6b21\u6570\u7684\u573a\u666f\u3002<\/li>\n

                                                      \/\/ \u666e\u901a\u6a21\u5f0f\u521b\u5efa<\/span>
                                                      \nint<\/span> efd =<\/span> eventfd<\/span>(<\/span>0<\/span>,<\/span> EFD_NONBLOCK |<\/span> EFD_CLOEXEC)<\/span>;<\/span>
                                                      \n\/\/ \u4fe1\u53f7\u91cf\u6a21\u5f0f\u521b\u5efa<\/span>
                                                      \nint<\/span> efd =<\/span> eventfd<\/span>(<\/span>0<\/span>,<\/span> EFD_SEMAPHORE |<\/span> EFD_NONBLOCK |<\/span> EFD_CLOEXEC)<\/span>;<\/span><\/p>\n

                                                      [\u6279\u6ce8]<\/p>\n

                                                      \u539f\u7b14\u8bb0\u4e2d\u5bf9\u666e\u901a\u6a21\u5f0f\u7684\u8bfb\u53d6\u63cf\u8ff0\u5b58\u5728\u504f\u5dee：\u666e\u901a\u6a21\u5f0f\u4e0b，read \u4f1a\u5c06\u8ba1\u6570\u5668\u7684\u5f53\u524d\u503c\u5168\u90e8\u8bfb\u51fa，\u540c\u65f6\u5c06\u8ba1\u6570\u5668\u6e05\u96f6，\u800c\u4e0d\u662f \u201c\u8bfb\u53d6\u4e00\u6b21\u51cf 1\u201d\u3002\u4fe1\u53f7\u91cf\u6a21\u5f0f\u624d\u662f\u6bcf\u6b21\u8bfb\u53d6\u51cf 1，\u4e24\u8005\u7684\u8bed\u4e49\u533a\u522b\u662f\u6838\u5fc3\u8003\u70b9，\u5fc5\u987b\u4e25\u683c\u533a\u5206\u3002<\/p>\n

                                                      8.2.3 \u57fa\u4e8e eventfd \u7684\u591a\u7ebf\u7a0b Reactor \u67b6\u6784<\/h4>\n

                                                      \u67b6\u6784\u8bbe\u8ba1：<\/p>\n

                                                    • \u4e3b\u7ebf\u7a0b\u4f5c\u4e3a Master，\u8d1f\u8d23\u76d1\u542c listen \u5957\u63a5\u5b57，accept \u83b7\u53d6\u65b0\u8fde\u63a5<\/li>\n
                                                    • \u6bcf\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u6709\u72ec\u7acb\u7684 Reactor\u3001\u72ec\u7acb\u7684 eventfd\u3001\u72ec\u7acb\u7684\u4efb\u52a1\u961f\u5217<\/li>\n
                                                    • eventfd \u7684\u8bfb\u7aef\u52a0\u5165\u5de5\u4f5c\u7ebf\u7a0b\u7684 Reactor \u8fdb\u884c\u76d1\u542c<\/li>\n
                                                    • \u4e3b\u7ebf\u7a0b\u83b7\u53d6\u65b0\u8fde\u63a5\u540e，\u9009\u62e9\u4e00\u4e2a\u5de5\u4f5c\u7ebf\u7a0b，\u5c06 fd \u653e\u5165\u5bf9\u5e94\u4efb\u52a1\u961f\u5217，\u7136\u540e\u5411\u8be5\u7ebf\u7a0b\u7684 eventfd \u5199\u5165\u6570\u636e\u89e6\u53d1\u901a\u77e5<\/li>\n
                                                    • \u5de5\u4f5c\u7ebf\u7a0b\u7684 eventfd \u5c31\u7eea\u540e，\u4ece\u4efb\u52a1\u961f\u5217\u4e2d\u53d6\u51fa\u6240\u6709\u65b0\u8fde\u63a5，\u52a0\u5165\u81ea\u5df1\u7684 Reactor \u7ba1\u7406<\/li>\n

                                                      \u8be5\u65b9\u6848\u7ed3\u5408\u4e86\u7528\u6237\u6001\u4efb\u52a1\u961f\u5217\u548c\u5185\u6838\u6001\u4e8b\u4ef6\u901a\u77e5：<\/p>\n

                                                        \n
                                                      • \u4efb\u52a1\u961f\u5217\u7528\u4e8e\u4f20\u9012\u5177\u4f53\u7684\u8fde\u63a5 fd，\u5728\u7528\u6237\u6001\u5b8c\u6210，\u5f00\u9500\u4f4e<\/li>\n
                                                      • eventfd \u4ec5\u7528\u4e8e\u5524\u9192\u5de5\u4f5c\u7ebf\u7a0b，\u89e3\u51b3\u4e86 \u201c\u5de5\u4f5c\u7ebf\u7a0b\u5728 epoll_wait \u963b\u585e，\u65e0\u6cd5\u611f\u77e5\u4efb\u52a1\u961f\u5217\u6709\u65b0\u6570\u636e\u201d \u7684\u95ee\u9898 \u5b8c\u7f8e\u517c\u987e\u4e86\u6027\u80fd\u548c\u4e8b\u4ef6\u9a71\u52a8\u7684\u7edf\u4e00\u6027\u3002<\/li>\n<\/ul>\n
                                                        \n

                                                        9 ~> \u77e5\u8bc6\u56fe\u8c31\u90e8\u5206<\/h2>\n

                                                        9.1 \u8865\u5145：\u5b9e\u73b0 ModEvents（Poller.hpp）（\u5185\u90e8\u5b9e\u73b0\u4e00\u4e2aEpollCtlHelper\u51fd\u6570，\u65b9\u4fbf\u4f7f\u7528\u8fd9\u4e2a\u65b9\u6cd5\u548cAddEvents，\u56e0\u4e3a\u4ee3\u7801\u90fd\u5dee\u4e0d\u591a）<\/h3>\n

                                                        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                        9.2 \u6d4b\u8bd5：\u5ba2\u6237\u7aef\u76f4\u63a5\u62ff\u7f51\u7edc\u7248\u672c\u8ba1\u7b97\u5668\u91cc\u9762\u5b9e\u73b0\u8fc7\u7684（OnlineCalClient.cc）<\/h3>\n

                                                        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                        9.3 \u8865\u5145：HandlerRequest\u91cc\u9762\u5c0f\u4fee\u6539（Protocol.hpp）<\/h3>\n

                                                        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                        9.4 \u8865\u5145：\u6539\u4e00\u4e0b\u5ba2\u6237\u7aef（\u6709\u95ee\u9898，\u4f1a\u5237\u5c4f）<\/h3>\n

                                                        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                        9.5 \u8865\u5145：\u6d4b\u8bd5\u4e00\u4e0b\u8d70\u5230\u5f02\u5e38\u5904\u7406（telnet\u6a21\u62df\u9519\u8bef\u7684\u8bf7\u6c42）<\/h3>\n

                                                        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                        9.6 \u8865\u5145：\u5b9e\u73b0 DelConnection（Reactor.hpp）&& \u5b9e\u73b0DelEvents（Poller.hpp）<\/h3>\n

                                                        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                        9.7 \u6d4b\u8bd5<\/h3>\n

                                                        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                        9.8 \u7ec6\u8282\u95ee\u9898<\/h3>\n

                                                        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                        9.9 \u5355Reactor\u6a21\u5f0f\u6536\u5c3e<\/h3>\n

                                                        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                        9.10 \u591aReactor\u6a21\u5f0f<\/h3>\n

                                                        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                        \n

                                                        10 ~> \u8865\u8db3\u7ec6\u8282\u4e4b\u540e\u7684\u5355Reactor\u7684\u4ee3\u7801\u90e8\u5206\u8bf4\u660e<\/h2>\n

                                                        \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

                                                        \u5149\u662f\u76ee\u5f55\u7ed3\u6784\u5c31\u5df2\u7ecf\u5982\u6b64\u5938\u5f20\u4e86，\u672c\u6587\u5b57\u6570\u5df2\u7ecf\u8fbe\u523012000\u5b57\u4e86，\u518d\u653e\u8fd9\u51e0\u4e4e\u76f8\u5f53\u4e8e\u4e00\u4e2a\u6807\u51c6\u9879\u76ee\u7684\u4ee3\u7801\u884c\u6570\u7684\u201c\u57fa\u4e8e\u5355Reactor\u7684\u7f51\u7edc\u7248\u672c\u8ba1\u7b97\u5668\u201d\u5230\u672c\u6587\u7684\u6b63\u6587\u4e2d\u5c31\u6709\u70b9\u592a\u957f\u4e86，\u5927\u5bb6\u4e0d\u7528\u62c5\u5fc3，\u827e\u8389\u4e1d\u4f1a\u4e13\u95e8\u66f4\u65b0\u4e00\u7bc7\u3010Reactor\u6a21\u5f0f\u3011\u7684\u4ee3\u7801\u7bc7\u6765\u4f5c\u4e3aLinux\u7f51\u7edc\u90e8\u5206\u591a\u8def\u8f6c\u63a5\u3001\u4e5f\u662f\u6574\u4e2aLinux\u90e8\u5206\u7684\u6536\u5b98\u4e4b\u4f5c，\u4e0d\u8fc7Linux\u5b66\u4e60\u5e76\u6ca1\u6709\u5230\u6b64\u4e3a\u6b62，\u8fdc\u8fdc\u6ca1\u6709\u7ed3\u675f！\u8fd8\u5f97\u7ee7\u7eed\u52aa\u529b\u590d\u4e60\u5de9\u56fa\u3001\u67e5\u6f0f\u8865\u7f3a\u624d\u884c！<\/p>\n

                                                        \n

                                                        \u7ed3\u5c3e\u90e8\u5206：\u6838\u5fc3\u603b\u7ed3<\/h2>\n

                                                        1. \u63a5\u53e3\u5b9e\u73b0\u7c7b\u6838\u5fc3\u8003\u70b9<\/h3>\n
                                                          \n
                                                        • EnableReadWrite \u7684\u4f4d\u8fd0\u7b97\u4e8b\u4ef6\u7ec4\u88c5\u903b\u8f91，ET \u6a21\u5f0f\u7684\u5f3a\u5236\u5f00\u542f\u89c4\u5219<\/li>\n
                                                        • epoll_ctl \u4e09\u79cd\u64cd\u4f5c（ADD\/MOD\/DEL）\u7684\u4f7f\u7528\u573a\u666f\u4e0e\u53c2\u6570\u89c4\u8303<\/li>\n
                                                        • EpollCtlHelper \u5c01\u88c5\u7684\u8bbe\u8ba1\u601d\u60f3，EPOLL_CTL_DEL \u4f20 nullptr \u7684\u6807\u51c6\u5199\u6cd5<\/li>\n
                                                        • \u8fde\u63a5\u9500\u6bc1\u7684\u4e25\u683c\u65f6\u5e8f：\u5148 epoll \u79fb\u9664，\u518d\u5173 fd，\u6700\u540e\u79fb\u9664\u7ba1\u7406\u8282\u70b9；\u987a\u5e8f\u98a0\u5012\u4f1a\u5bfc\u81f4\u5185\u6838\u62a5\u9519\u6216\u91ce\u6307\u9488\u95ee\u9898<\/li>\n
                                                        • Connection \u56de\u6307\u6307\u9488\u7684\u4f5c\u7528：\u8ba9\u8fde\u63a5\u5bf9\u8c61\u80fd\u591f\u4e3b\u52a8\u8c03\u7528 Reactor \u63a5\u53e3\u4fee\u6539\u81ea\u8eab\u4e8b\u4ef6\u72b6\u6001<\/li>\n<\/ul>\n

                                                          2. \u5f02\u5e38\u4e0e\u8fb9\u754c\u7c7b\u9ad8\u9891\u5751\u70b9<\/h3>\n
                                                            \n
                                                          • \u5355 Reactor \u4e0b\u7981\u6b62\u5355\u4e2a\u8fde\u63a5\u5f02\u5e38\u7ec8\u6b62\u6574\u4e2a\u8fdb\u7a0b，\u534f\u8bae\u89e3\u6790\u5931\u8d25\u5fc5\u987b\u8d70\u8fde\u63a5\u9500\u6bc1\u6d41\u7a0b，\u8fd9\u662f\u591a\u8fdb\u7a0b\u8fc1\u79fb\u5230\u5355 Reactor \u7684\u5178\u578b\u9002\u914d\u9519\u8bef<\/li>\n
                                                          • \u81ea\u5b9a\u4e49\u65e5\u5fd7\u7c7b\u4e0d\u53ef\u76f4\u63a5\u4f7f\u7528 std::endl，\u4f1a\u5bfc\u81f4\u6a21\u677f\u53c2\u6570\u63a8\u5bfc\u5931\u8d25，\u5c5e\u4e8e C++ \u81ea\u5b9a\u4e49\u6d41\u8f93\u51fa\u7684\u5e38\u89c1\u8e29\u5751\u70b9<\/li>\n
                                                          • EPOLLERR\/EPOLLHUP \u7684\u6807\u51c6\u5904\u7406\u65b9\u5f0f：\u8f6c\u6362\u4e3a\u8bfb\u5199\u4e8b\u4ef6\u7edf\u4e00\u6536\u655b\u5f02\u5e38\u903b\u8f91，\u907f\u514d\u91cd\u590d\u7f16\u5199\u9519\u8bef\u5904\u7406\u4ee3\u7801<\/li>\n
                                                          • ET \u6a21\u5f0f\u4e0b\u5fc5\u987b\u5faa\u73af\u8bfb\u5199\u76f4\u5230\u8fd4\u56de EAGAIN\/EWOULDBLOCK，\u786e\u4fdd\u672c\u6b21\u4e8b\u4ef6\u89e6\u53d1\u7684\u6240\u6709\u6570\u636e\u5168\u90e8\u5904\u7406\u5b8c\u6bd5<\/li>\n<\/ul>\n

                                                            3. \u4e8b\u4ef6\u673a\u5236\u6838\u5fc3\u539f\u7406<\/h3>\n
                                                              \n
                                                            • EPOLLOUT \u4f7f\u80fd\u5373\u89e6\u53d1\u5c31\u7eea\u7684\u5e95\u5c42\u539f\u56e0：\u5199\u7f13\u51b2\u533a\u9ed8\u8ba4\u7a7a\u95f2，\u4f7f\u80fd\u5373\u6ee1\u8db3\u5c31\u7eea\u6761\u4ef6<\/li>\n
                                                            • \u4e24\u79cd\u5199\u89e6\u53d1\u65b9\u6848\u7684\u4f18\u52a3\u5bf9\u6bd4：\u76f4\u63a5\u8c03\u7528\u5ef6\u8fdf\u4f4e，\u4f7f\u80fd\u89e6\u53d1\u4ee3\u7801\u7edf\u4e00<\/li>\n
                                                            • \u5355 Reactor \u7684\u65f6\u5e8f\u4fdd\u8bc1\u539f\u7406：\u4e32\u884c\u6267\u884c\u65e0\u5e76\u53d1\u8c03\u5ea6\u5e72\u6270，\u8bf7\u6c42\u4e0e\u5e94\u7b54\u4e25\u683c\u6309\u987a\u5e8f\u5bf9\u5e94<\/li>\n
                                                            • \u5355 Reactor + \u7ebf\u7a0b\u6c60\u65b9\u6848\u7684\u672c\u8d28\u7f3a\u9677：\u7ebf\u7a0b\u8c03\u5ea6\u4e0d\u53ef\u63a7\u5bfc\u81f4\u54cd\u5e94\u65f6\u5e8f\u9519\u4e71，\u4e25\u683c\u65f6\u5e8f\u573a\u666f\u7981\u7528<\/li>\n<\/ul>\n

                                                              4. \u8fde\u63a5\u4fdd\u6d3b\u673a\u5236\u8003\u70b9<\/h3>\n
                                                                \n
                                                              • \u65f6\u95f4\u6233\u7684\u66f4\u65b0\u65f6\u673a\u4e0e\u68c0\u6d4b\u65f6\u673a\u7684\u8bbe\u8ba1\u903b\u8f91<\/li>\n
                                                              • \u8d85\u65f6\u68c0\u6d4b\u7684\u4e24\u79cd\u5b9e\u73b0\u65b9\u6848：\u904d\u5386\u6cd5\u590d\u6742\u5ea6 O (n)，\u6700\u5c0f\u5806\u6cd5\u590d\u6742\u5ea6 O (1)<\/li>\n
                                                              • epoll_wait \u8d85\u65f6\u53c2\u6570\u7684\u53cc\u91cd\u4f5c\u7528：\u907f\u514d\u65e0\u9650\u963b\u585e + \u5b9a\u65f6\u6267\u884c\u4fdd\u6d3b\u7b49\u540e\u53f0\u4efb\u52a1<\/li>\n<\/ul>\n

                                                                5. \u591a\u6267\u884c\u6d41\u6539\u9020\u6838\u5fc3\u67b6\u6784<\/h3>\n
                                                                  \n
                                                                • One Thread One Loop \u7684\u6838\u5fc3\u601d\u60f3\u4e0e\u4e09\u5927\u4f18\u52bf：\u65e0\u9501\u3001\u65f6\u5e8f\u4fdd\u8bc1\u3001\u6545\u969c\u9694\u79bb<\/li>\n
                                                                • Master-Slaver \u67b6\u6784\u7684\u804c\u8d23\u5212\u5206：Master \u4ec5\u8d1f\u8d23\u5206\u53d1，Slaver \u8d1f\u8d23\u8fde\u63a5\u5168\u751f\u547d\u5468\u671f\u7ba1\u7406<\/li>\n
                                                                • \u591a\u8fdb\u7a0b\u4e0e\u591a\u7ebf\u7a0b Reactor \u7684\u5206\u53d1\u5dee\u5f02：\u591a\u8fdb\u7a0b\u7531\u5b50\u8fdb\u7a0b\u81ea\u4e3b accept，\u591a\u7ebf\u7a0b\u7531\u4e3b\u7ebf\u7a0b accept \u540e\u4f20\u9012 fd<\/li>\n
                                                                • eventfd \u4e0e\u7ba1\u9053\u7684\u4f18\u52a3\u5bf9\u6bd4：eventfd \u5f00\u9500\u66f4\u4f4e\u3001\u4ec5\u652f\u6301\u4e8b\u4ef6\u901a\u77e5\u3001\u65e0\u6cd5\u4f20\u8f93\u6570\u636e；\u7ba1\u9053\u652f\u6301\u6570\u636e\u4f20\u8f93\u3001\u5f00\u9500\u66f4\u9ad8<\/li>\n
                                                                • eventfd \u4e24\u79cd\u6a21\u5f0f\u7684\u8bed\u4e49\u533a\u522b：\u666e\u901a\u6a21\u5f0f\u4e00\u6b21\u6027\u6e05\u96f6，\u4fe1\u53f7\u91cf\u6a21\u5f0f\u6bcf\u6b21\u51cf 1，\u9002\u7528\u573a\u666f\u4e0d\u540c<\/li>\n
                                                                • eventfd + \u4efb\u52a1\u961f\u5217\u67b6\u6784\u89e3\u51b3\u7684\u6838\u5fc3\u95ee\u9898：\u540c\u65f6\u652f\u6301 epoll \u4e8b\u4ef6\u7b49\u5f85\u4e0e\u7528\u6237\u6001\u4efb\u52a1\u5206\u53d1，\u517c\u987e\u6027\u80fd\u4e0e\u4e8b\u4ef6\u9a71\u52a8\u7edf\u4e00\u6027<\/li>\n<\/ul>\n

                                                                  6. Reactor \u6a21\u5f0f\u7406\u8bba\u8003\u70b9<\/h3>\n
                                                                    \n
                                                                  • \u534a\u540c\u6b65\u534a\u5f02\u6b65\u7684\u5177\u4f53\u542b\u4e49：\u4e8b\u4ef6\u5230\u6765\u662f\u5f02\u6b65，IO \u4e0e\u4e1a\u52a1\u5904\u7406\u662f\u540c\u6b65<\/li>\n
                                                                  • \u5355 Reactor \u7684\u5178\u578b\u4ee3\u8868\u4e0e\u9002\u7528\u573a\u666f：Redis\u3001CPU \u975e\u74f6\u9888\u7684\u7eaf IO \u4e1a\u52a1<\/li>\n
                                                                  • \u591a Reactor \u7684\u5178\u578b\u4ee3\u8868\u4e0e\u9002\u7528\u573a\u666f：Nginx\u3001CPU \u5bc6\u96c6\u578b\u9ad8\u5e76\u53d1\u4e1a\u52a1<\/li>\n
                                                                  • Reactor \u6a21\u5f0f\u7684\u6838\u5fc3\u4ef7\u503c：\u7528\u5355\u6267\u884c\u6d41\u652f\u6491\u5927\u91cf\u5e76\u53d1\u8fde\u63a5，\u9002\u914d\u4e92\u8054\u7f51 \u201c\u8fde\u63a5\u591a\u3001\u6d3b\u8dc3\u5c11\u201d \u7684\u5178\u578b\u573a\u666f<\/li>\n<\/ul>\n
                                                                    \n

                                                                    \u7ed3\u5c3e<\/h2>\n

                                                                    uu\u4eec，\u672c\u6587\u7684\u5185\u5bb9\u5230\u8fd9\u91cc\u5c31\u5168\u90e8\u7ed3\u675f\u4e86，\u827e\u8389\u4e1d\u5728\u8fd9\u91cc\u518d\u6b21\u611f\u8c22\u60a8\u7684\u9605\u8bfb！<\/font><\/p>\n\n\n\n
                                                                    \n

                                                                    \n

                                                                    \u827e\u8389\u4e1d\u52aa\u529b\u7ec3\u5251<\/font>
                                                                    \n <\/h3>\n

                                                                    <\/b><\/p>\n

                                                                    C\/C++ & Linux \u5e95\u5c42\u63a2\u7d22\u8005 | \u4e00\u4e2a\u6b63\u5728\u52aa\u529b\u7ec3\u5251\u7684\u6280\u672f\u535a\u4e3b<\/font><\/p>\n

                                                                    \n

                                                                    👀
                                                                    \n \u3010\u5173\u6ce8\u3011<\/b> \u8ddf\u968f\u6211\u4e00\u8d77\u6df1\u8015\u6280\u672f\u9886\u57df，\u89c1\u8bc1\u6bcf\u4e00\u6b21\u6210\u957f\u3002<\/p>\n

                                                                    \u2764\ufe0f
                                                                    \n \u3010\u70b9\u8d5e\u3011<\/b> \u8ba9\u4f18\u8d28\u5185\u5bb9\u88ab\u66f4\u591a\u4eba\u770b\u89c1，\u8ba9\u77e5\u8bc6\u4f20\u9012\u66f4\u6709\u529b\u91cf\u3002<\/p>\n

                                                                    \u2b50
                                                                    \n \u3010\u6536\u85cf\u3011<\/b> \u628a\u6838\u5fc3\u77e5\u8bc6\u70b9\u5b58\u597d，\u5728\u9700\u8981\u65f6\u968f\u65f6\u67e5\u3001\u968f\u65f6\u7528\u3002<\/p>\n

                                                                    💬
                                                                    \n \u3010\u8bc4\u8bba\u3011<\/b> \u5206\u4eab\u4f60\u7684\u7ecf\u9a8c\u6216\u7591\u95ee，\u8bc4\u8bba\u533a\u4e00\u8d77\u4ea4\u6d41\u907f\u5751！<\/p>\n

                                                                    \u4e0d\u8981\u5fd8\u8bb0\u7ed9\u535a\u4e3b\u201c\u4e00\u952e\u56db\u8fde\u201d\u54e6！<\/font><\/b><\/p>\n

                                                                    \u201c\u4eca\u65e5\u7ec3\u5251\u8fbe\u6210！\u201d<\/font><\/p>\n

                                                                    <\/p>\n

                                                                    \u201c\u6280\u672f\u4e4b\u8def\u96be\u514d\u6709\u56f0\u60d1，\u4f46\u540c\u884c\u7684\u4eba\u4f1a\u8ba9\u524d\u8fdb\u66f4\u6709\u65b9\u5411\u3002\u201d <\/font><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                                                    \u7ed3\u8bed：\u5e0c\u671b\u5bf9\u5b66\u4e60Linux\u76f8\u5173\u5185\u5bb9\u7684uu\u6709\u6240\u5e2e\u52a9，\u4e0d\u8981\u5fd8\u8bb0\u7ed9\u535a\u4e3b\u201c\u4e00\u952e\u56db\u8fde\u201d\u54e6！<\/font><\/p>\n

                                                                    \u5f80\u671f\u56de\u987e：<\/font><\/p>\n

                                                                    \u3010Linux\u7f51\u7edc\u3011\u591a\u8def\u8f6c\u63a5epoll（\u56db）Reactor\u6a21\u5f0f：\u57fa\u4e8eepoll\u7684\u9ad8\u6027\u80fd\u7f51\u7edc\u670d\u52a1\u5668\u8bbe\u8ba1\u4e0e\u5b9e\u73b0（\u4e2d）\u4ee3\u7801\u7ec6\u8282<\/p>\n

                                                                    🗡\u535a\u4e3b\u5728\u8fd9\u91cc\u653e\u4e86\u4e00\u53ea\u5c0f\u72d7，\u5927\u5bb6\u770b\u5b8c\u4e86\u6478\u6478\u5c0f\u72d7\u653e\u677e\u4e00\u4e0b\u5427！🗡 <\/font><\/p>\n

                                                                    \u0aee\u208d \u02f6 \u02ca \u1d25 \u02cb\u02f6\u208e\u10d0 <\/font><\/p>\n

                                                                    \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n","protected":false},"excerpt":{"rendered":"

                                                                    🎬 \u4e2a\u4eba\u4e3b\u9875：\u827e\u8389\u4e1d\u52aa\u529b\u7ec3\u5251\u2744\u4e13\u680f\u4f20\u9001\u95e8：\u300aC\u8bed\u8a00\u300b\u300a\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5\u300b\u300aC\/C\u5e72\u8d27\u5206\u4eab&\u5b66\u4e60\u8fc7\u7a0b\u8bb0\u5f55\u300b \u300aLinux\u64cd\u4f5c\u7cfb\u7edf\u7f16\u7a0b\u8be6\u89e3\u300b\u300a\u7b14\u8bd5\/\u9762\u8bd5\u5e38\u89c1\u7b97\u6cd5：\u4ece\u57fa\u7840\u5230\u8fdb\u9636\u300b\u300aPython\u5e72\u8d27\u5206\u4eab\u300b\u2b50\ufe0f\u4e3a\u5929\u5730\u7acb\u5fc3，\u4e3a\u751f\u6c11\u7acb\u547d，\u4e3a\u5f80\u5723\u7ee7\u7edd\u5b66，\u4e3a\u4e07\u4e16\u5f00\u592a\u5e73 🎬 \u827e\u8389\u4e1d\u7684\u7b80\u4ecb： \u6587\u7ae0\u76ee\u5f55\u524d\u8a00\u4e00\u3001 \u5f00\u5934\u90e8\u5206（\u6846\u67b6\u5f15\u5165）1. \u6574\u4f53\u5b66\u4e60<\/p>\n","protected":false},"author":2,"featured_media":88077,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9137,58,205,43,78,44],"topic":[],"class_list":["post-88094","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-atomgit","tag-linux","tag-tcp-ip","tag-43","tag-78","tag-44"],"yoast_head":"\n\u3010Linux\u7f51\u7edc\u3011\u591a\u8def\u8f6c\u63a5epoll\uff08\u4e94\uff09Reactor\u6a21\u5f0f\uff1a\u57fa\u4e8eepoll\u7684\u9ad8\u6027\u80fd\u7f51\u7edc\u670d\u52a1\u5668\u8bbe\u8ba1\u4e0e\u5b9e\u73b0\uff08\u4e0b\uff09\u5269\u4f59\u7ec6\u8282\u8865\u5145 + \u591a\u8fdb\u7a0b\u591a\u7ebf\u7a0b\u5b9e\u73b0Reactor\u8981\u70b9 - 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