{"id":37727,"date":"2025-05-17T07:56:11","date_gmt":"2025-05-16T23:56:11","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/37727.html"},"modified":"2025-05-17T07:56:11","modified_gmt":"2025-05-16T23:56:11","slug":"%e9%a1%b9%e7%9b%ae%e6%b7%b1%e6%8c%96%e4%bb%bfmuduo%e5%ba%93%e7%9a%84%e5%b9%b6%e5%8f%91%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%9a%84%e8%a7%a3%e6%9e%90%e4%b8%8e%e4%bc%98%e5%8c%96%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/37727.html","title":{"rendered":"[\u9879\u76ee\u6df1\u6316]\u4effmuduo\u5e93\u7684\u5e76\u53d1\u670d\u52a1\u5668\u7684\u89e3\u6790\u4e0e\u4f18\u5316\u65b9\u6848"},"content":{"rendered":"<p>\u6807\u9898&#xff1a;[\u9879\u76ee\u6df1\u6316]\u4effmuduo\u5e93\u7684\u5e76\u53d1\u670d\u52a1\u5668\u7684\u4f18\u5316\u65b9\u6848 &#064;\u6c34\u58a8\u4e0d\u5199bug<\/p>\n<hr \/>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250516235605-6827d095b160b.jpg\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<hr \/>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u4e00\u3001buffer \u6a21\u5757<\/li>\n<li>&#xff08;1&#xff09;\u7ebf\u6027\u7f13\u51b2\u533a&#043;\u76f4\u63a5\u6269\u5bb9&#8212;-&gt;\u73af\u5f62\u7f13\u51b2\u533a&#043;\u5b9a\u65f6\u6269\u5bb9&#xff08;\u53ea\u4f1a\u6269\u5bb9\u4e00\u6b21&#xff09;<\/li>\n<li>&#xff08;2&#xff09;\u4f7f\u7528\u53cc\u7f13\u51b2&#xff08;Double Buffering&#xff09;<\/li>\n<li>&#xff08;3&#xff09;\u6570\u636e\u4e22\u5f03\u7b56\u7565<\/li>\n<li>\n<ul>\n<li>\u4e3a\u4ec0\u4e48\u89c6\u9891\u4f20\u8f93\u9009\u62e9\u4e0d\u53ef\u9760\u7684UDP\u534f\u8bae&#xff1f;<\/li>\n<\/ul>\n<\/li>\n<li>&#xff08;4&#xff09;\u96f6\u62f7\u8d1d<\/li>\n<li>\n<ul>\n<li>\u4e3a\u4ec0\u4e48\u96f6\u62f7\u8d1d\u91cd\u8981&#xff1f;<\/li>\n<li>\u96f6\u62f7\u8d1d\u7684\u5178\u578b\u573a\u666f<\/li>\n<li>\u4f20\u7edf\u6570\u636e\u4f20\u8f93\u7684\u8fc7\u7a0b<\/li>\n<li>\u96f6\u62f7\u8d1d\u7684\u8fc7\u7a0b<\/li>\n<li>\u5b9e\u73b0\u96f6\u62f7\u8d1d\u7684\u6280\u672f<\/li>\n<li>\n<ul>\n<li>1. &#096;sendfile&#096; \u7cfb\u7edf\u8c03\u7528<\/li>\n<li>2. &#096;mmap&#096; &#043; &#096;write&#096;<\/li>\n<li>3. &#096;splice&#096; \u7cfb\u7edf\u8c03\u7528<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001EventLoop \u6a21\u5757<\/li>\n<li>\n<ul>\n<li>\u5982\u4f55\u7406\u89e3RunInLoop\u8fd9\u4e00\u7c7b\u7684\u51fd\u6570&#xff1f;<\/li>\n<li>\n<ul>\n<li>\u4e3a\u4ec0\u4e48\u9700\u8981 runInLoop&#xff1f;<\/li>\n<li>runInLoop \u7684\u4f18\u70b9<\/li>\n<\/ul>\n<\/li>\n<li>&#xff08;1&#xff09;\u51cf\u5c11\u9501\u7684\u4f7f\u7528&#8212;-\u65e0\u9501\u961f\u5217<\/li>\n<li>&#xff08;2&#xff09;\u4f18\u5316\u5b9a\u65f6\u5668\u5904\u7406&#8212;-\u65f6\u95f4\u8f6e\u4ee3\u66ff\u6700\u5c0f\u5806<\/li>\n<li>\n<ul>\n<li>\u4e3a\u4ec0\u4e48 TimerWheel \u9700\u8981 weak_ptr&#xff1f;<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u4e09. ThreadPool \u6a21\u5757<\/li>\n<li>\u56db\u3001Acceptor \u6a21\u5757<\/li>\n<li>\n<ul>\n<li>\n<ul>\n<li>2. \u5173\u952e\u7ec4\u4ef6<\/li>\n<li>3. \u5b9e\u73b0\u6b65\u9aa4<\/li>\n<li>\n<ul>\n<li>3.1. \u5b9a\u4e49\u8d1f\u8f7d\u5747\u8861\u5668<\/li>\n<li>3.2. \u6539\u9020 &#096;Acceptor&#096; \u6a21\u5757<\/li>\n<li>3.3. \u6539\u9020 &#096;EventLoop&#096; \u6a21\u5757<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u4e94\u3001\u5b9a\u65f6\u5668\u6a21\u5757<\/li>\n<li>\u516d\u3001\u65e5\u5fd7\u6a21\u5757<\/li>\n<li>\u4e03\u3001 \u9519\u8bef\u5904\u7406\u4e0e\u76d1\u63a7<\/li>\n<li>\n<ul>\n<li>1. \u8bbe\u8ba1\u539f\u5219<\/li>\n<li>2. \u5b9e\u73b0\u6b65\u9aa4<\/li>\n<li>\n<ul>\n<li>2.1. \u5b9a\u4e49\u5f02\u5e38\u57fa\u7c7b<\/li>\n<li>2.2. \u5b9a\u4e49\u6d3e\u751f\u5f02\u5e38\u7c7b<\/li>\n<li>2.3. \u5728\u6838\u5fc3\u6a21\u5757\u4e2d\u629b\u51fa\u5f02\u5e38<\/li>\n<li>2.4. \u5168\u5c40\u6355\u83b7\u5f02\u5e38<\/li>\n<\/ul>\n<\/li>\n<li>3. \u4f18\u5316\u4e0e\u6269\u5c55<\/li>\n<li>\n<ul>\n<li>\u7ec6\u5316\u5f02\u5e38\u4fe1\u606f<\/li>\n<li>\u7ed3\u5408\u65e5\u5fd7\u8bb0\u5f55<\/li>\n<li>\u5f02\u5e38\u6062\u590d\u673a\u5236<\/li>\n<li>\u652f\u6301\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u578b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h2>\u4e00\u3001buffer \u6a21\u5757<\/h2>\n<h2>&#xff08;1&#xff09;\u7ebf\u6027\u7f13\u51b2\u533a&#043;\u76f4\u63a5\u6269\u5bb9&#8212;-&gt;\u73af\u5f62\u7f13\u51b2\u533a&#043;\u5b9a\u65f6\u6269\u5bb9&#xff08;\u53ea\u4f1a\u6269\u5bb9\u4e00\u6b21&#xff09;<\/h2>\n<p>\u5982\u679c\u7f13\u51b2\u533a\u6ee1\u4e86\u8d85\u8fc7\u4e00\u5b9a\u65f6\u95f4&#xff08;10s&#xff09;\u4ecd\u7136\u5904\u4e8e\u9ad8\u4f7f\u7528\u7387&#xff08;&gt;&#061;90%&#xff09;\u7684\u72b6\u6001&#xff0c;\u5219\u6269\u5bb9\u4e00\u6b21&#xff0c;\u589e\u5927\u73af\u5f62\u7f13\u51b2\u533a\u7684\u5927\u5c0f&#xff0c;\u540e\u7eed\u4e0d\u518d\u6269\u5bb9\u3002\u6269\u5bb9\u4e00\u6b21\u4e4b\u540e&#xff0c;\u5173\u95ed\u5b9a\u65f6\u5668\u3002 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\u5185\u5b58\u8d44\u6e90\u654f\u611f\u6027&#xff1a;\u6269\u5bb9\u662f\u6709\u9650\u5236\u7684&#xff08;\u53ea\u6269\u5bb9\u4e00\u6b21&#xff09;&#xff0c;\u907f\u514d\u4e86\u52a8\u6001\u6269\u5bb9\u5e26\u6765\u7684\u8fc7\u591a\u5185\u5b58\u6d88\u8017\u3002<\/p>\n<h2>&#xff08;2&#xff09;\u4f7f\u7528\u53cc\u7f13\u51b2&#xff08;Double Buffering&#xff09;<\/h2>\n<p>\u4f7f\u7528\u4e24\u4e2a\u7f13\u51b2\u533a&#xff0c;\u5f53\u4e00\u4e2a\u7f13\u51b2\u533a\u6ee1\u65f6\u5207\u6362\u5230\u53e6\u4e00\u4e2a\u7f13\u51b2\u533a&#xff0c;\u907f\u514d\u963b\u585e\u3002\u901a\u8fc7\u72b6\u6001\u53d8\u91cf\u63a7\u5236\u4e24\u4e2a\u7f13\u51b2\u533a\u7684\u5207\u6362\u3002<\/p>\n<h2>&#xff08;3&#xff09;\u6570\u636e\u4e22\u5f03\u7b56\u7565<\/h2>\n<p>\u5f53\u7f13\u51b2\u533a\u6ee1\u65f6&#xff0c;\u76f4\u63a5\u4e22\u5f03\u65b0\u5230\u8fbe\u7684\u6570\u636e\u6216\u65e7\u6570\u636e\u3002 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FEC&#xff09;\u548c\u4f18\u5316\u624b\u6bb5&#xff08;\u5982\u81ea\u9002\u5e94\u6bd4\u7279\u7387&#xff09;&#xff0c;\u53ef\u4ee5\u5f25\u8865\u5176\u4e0d\u8db3&#xff0c;\u786e\u4fdd\u89c6\u9891\u6d41\u7684\u8d28\u91cf\u548c\u6d41\u7545\u6027\u3002\u5bf9\u4e8e\u5b9e\u65f6\u6027\u8981\u6c42\u4f4e\u7684\u573a\u666f&#xff08;\u5982\u89c6\u9891\u6587\u4ef6\u4e0b\u8f7d&#xff09;&#xff0c;\u5219\u53ef\u4ee5\u9009\u62e9\u66f4\u53ef\u9760\u7684 TCP\u3002<\/p>\n<h2>&#xff08;4&#xff09;\u96f6\u62f7\u8d1d<\/h2>\n<p>\u96f6\u62f7\u8d1d&#xff08;Zero-Copy&#xff09; \u662f\u4e00\u79cd\u4f18\u5316\u6280\u672f&#xff0c;\u65e8\u5728\u5728\u8ba1\u7b97\u673a\u7cfb\u7edf\u4e2d\u51cf\u5c11\u6570\u636e\u590d\u5236\u7684\u6b21\u6570&#xff0c;\u4ee5\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u6216\u5904\u7406\u7684\u6548\u7387&#xff0c;\u5c24\u5176\u662f\u5728\u6587\u4ef6\u6216\u7f51\u7edc\u6570\u636e\u7684\u9ad8\u6548\u4f20\u8f93\u4e2d\u3002\u96f6\u62f7\u8d1d\u7684\u6838\u5fc3\u7406\u5ff5\u662f\u907f\u514d CPU \u5c06\u6570\u636e\u4ece\u4e00\u4e2a\u4f4d\u7f6e\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u4f4d\u7f6e&#xff0c;\u800c\u662f\u901a\u8fc7\u7279\u5b9a\u7684\u786c\u4ef6\u6216\u5185\u6838\u652f\u6301&#xff0c;\u76f4\u63a5\u5728\u6570\u636e\u7684\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u4e4b\u95f4\u4f20\u9012\u6570\u636e\u3002<\/p>\n<hr \/>\n<h3>\u4e3a\u4ec0\u4e48\u96f6\u62f7\u8d1d\u91cd\u8981&#xff1f;<\/h3>\n<li>\u51cf\u5c11 CPU \u5360\u7528&#xff1a;\n<ul>\n<li>\u6570\u636e\u62f7\u8d1d\u901a\u5e38\u9700\u8981 CPU \u4ecb\u5165&#xff0c;\u96f6\u62f7\u8d1d\u901a\u8fc7\u51cf\u5c11\u62f7\u8d1d\u6b21\u6570&#xff0c;\u91ca\u653e\u4e86 CPU \u7684\u8ba1\u7b97\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u6548\u7387&#xff1a;\n<ul>\n<li>\u6570\u636e\u76f4\u63a5\u4ece\u4e00\u4e2a\u4f4d\u7f6e\u79fb\u52a8\u5230\u76ee\u6807\u4f4d\u7f6e&#xff0c;\u4e0d\u7ecf\u8fc7\u4e2d\u95f4\u7f13\u51b2&#xff0c;\u5927\u5e45\u51cf\u5c11\u4f20\u8f93\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u964d\u4f4e\u5185\u5b58\u5e26\u5bbd\u538b\u529b&#xff1a;\n<ul>\n<li>\u4f20\u7edf\u7684\u591a\u6b21\u6570\u636e\u62f7\u8d1d\u4f1a\u5360\u7528\u5b9d\u8d35\u7684\u5185\u5b58\u5e26\u5bbd&#xff0c;\u96f6\u62f7\u8d1d\u51cf\u5c11\u4e86\u8fd9\u4e00\u5f00\u9500\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h3>\u96f6\u62f7\u8d1d\u7684\u5178\u578b\u573a\u666f<\/h3>\n<li>\u6587\u4ef6\u4f20\u8f93&#xff08;\u6587\u4ef6\u5230\u7f51\u7edc&#xff09;&#xff1a;\n<ul>\n<li>\u5c06\u6587\u4ef6\u5185\u5bb9\u76f4\u63a5\u53d1\u9001\u5230\u7f51\u7edc&#xff08;\u5982\u901a\u8fc7 sendfile \u7cfb\u7edf\u8c03\u7528&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u7f51\u7edc\u6570\u636e\u4f20\u8f93&#xff1a;\n<ul>\n<li>\u6570\u636e\u76f4\u63a5\u4ece\u5185\u6838\u7f13\u51b2\u533a\u53d1\u9001\u5230\u7f51\u5361&#xff0c;\u4e0d\u7ecf\u8fc7\u7528\u6237\u6001\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u78c1\u76d8 I\/O \u4f18\u5316&#xff1a;\n<ul>\n<li>\u5728\u5927\u6587\u4ef6\u8bfb\u5199\u4e2d&#xff0c;\u907f\u514d\u6570\u636e\u5728\u78c1\u76d8\u3001\u5185\u6838\u7f13\u51b2\u533a\u3001\u7528\u6237\u6001\u7f13\u51b2\u533a\u4e4b\u95f4\u53cd\u590d\u62f7\u8d1d\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h3>\u4f20\u7edf\u6570\u636e\u4f20\u8f93\u7684\u8fc7\u7a0b<\/h3>\n<p>\u4ee5\u6587\u4ef6\u53d1\u9001\u5230\u7f51\u7edc\u4e3a\u4f8b&#xff0c;\u4f20\u7edf\u6570\u636e\u4f20\u8f93\u7684\u6b65\u9aa4\u5982\u4e0b&#xff1a;<\/p>\n<li>\u6587\u4ef6\u8bfb\u53d6&#xff1a;\n<ul>\n<li>\u4ece\u78c1\u76d8\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u5230\u5185\u6838\u7f13\u51b2\u533a\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u590d\u5236\u5230\u7528\u6237\u7a7a\u95f4&#xff1a;\n<ul>\n<li>\u5c06\u5185\u6838\u7f13\u51b2\u533a\u7684\u6570\u636e\u590d\u5236\u5230\u7528\u6237\u7a7a\u95f4\u7684\u7f13\u51b2\u533a\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u53d1\u9001\u5230\u5185\u6838&#xff1a;\n<ul>\n<li>\u7528\u6237\u7a7a\u95f4\u7684\u6570\u636e\u518d\u590d\u5236\u56de\u5185\u6838\u7a7a\u95f4\u7684\u7f51\u7edc\u7f13\u51b2\u533a\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u53d1\u9001\u5230\u7f51\u5361&#xff1a;\n<ul>\n<li>\u6700\u540e&#xff0c;\u7f51\u5361\u4ece\u5185\u6838\u7f51\u7edc\u7f13\u51b2\u533a\u4e2d\u8bfb\u53d6\u6570\u636e\u5e76\u53d1\u9001\u3002<\/li>\n<\/ul>\n<\/li>\n<p>\u603b\u5171\u6d89\u53ca 4 \u6b21\u6570\u636e\u62f7\u8d1d&#xff0c;\u5176\u4e2d CPU \u8d1f\u8d23\u5b8c\u6210\u81f3\u5c11 2 \u6b21\u6570\u636e\u590d\u5236\u3002<\/p>\n<hr \/>\n<h3>\u96f6\u62f7\u8d1d\u7684\u8fc7\u7a0b<\/h3>\n<p>\u901a\u8fc7\u96f6\u62f7\u8d1d\u6280\u672f&#xff0c;\u53ef\u4ee5\u5c06\u4e0a\u8ff0\u8fc7\u7a0b\u4f18\u5316\u4e3a&#xff1a;<\/p>\n<li>\u6570\u636e\u76f4\u63a5\u6620\u5c04&#xff1a;\n<ul>\n<li>\u4f7f\u7528\u5185\u6838\u652f\u6301&#xff0c;\u76f4\u63a5\u5c06\u6587\u4ef6\u4ece\u78c1\u76d8\u7684\u9875\u7f13\u5b58\u53d1\u9001\u5230\u7f51\u7edc\u7f13\u51b2\u533a&#xff08;\u4e0d\u7ecf\u8fc7\u7528\u6237\u6001&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u7f51\u5361\u76f4\u63a5\u8bfb\u53d6&#xff1a;\n<ul>\n<li>\u7f51\u5361\u76f4\u63a5\u4ece\u5185\u6838\u7f13\u51b2\u533a\u8bfb\u53d6\u6570\u636e\u5e76\u53d1\u9001&#xff0c;\u4e0d\u9700\u8981\u989d\u5916\u7684\u62f7\u8d1d\u3002<\/li>\n<\/ul>\n<\/li>\n<p>\u603b\u5171\u6d89\u53ca 0 \u6b21\u7528\u6237\u6001\u62f7\u8d1d&#xff0c;CPU \u53ea\u8d1f\u8d23\u63a7\u5236\u6d41\u7a0b\u3002<\/p>\n<hr \/>\n<h3>\u5b9e\u73b0\u96f6\u62f7\u8d1d\u7684\u6280\u672f<\/h3>\n<p>\u4ee5\u4e0b\u662f\u51e0\u79cd\u5e38\u89c1\u7684\u96f6\u62f7\u8d1d\u5b9e\u73b0\u6280\u672f&#xff1a;<\/p>\n<h4>1. sendfile \u7cfb\u7edf\u8c03\u7528<\/h4>\n<ul>\n<li>\u63cf\u8ff0&#xff1a;\n<ul>\n<li>sendfile \u662f Linux \u63d0\u4f9b\u7684\u4e00\u79cd\u7cfb\u7edf\u8c03\u7528&#xff0c;\u7528\u4e8e\u5c06\u6587\u4ef6\u76f4\u63a5\u4ece\u5185\u6838\u9875\u7f13\u5b58\u53d1\u9001\u5230\u7f51\u7edc\u5957\u63a5\u5b57\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5de5\u4f5c\u539f\u7406&#xff1a;\n<ul>\n<li>\u6587\u4ef6\u6570\u636e\u4ece\u78c1\u76d8\u88ab\u8bfb\u53d6\u5230\u5185\u6838\u9875\u7f13\u5b58\u540e&#xff0c;\u76f4\u63a5\u4ece\u5185\u6838\u9875\u7f13\u5b58\u53d1\u9001\u5230\u7f51\u5361&#xff0c;\u65e0\u9700\u7ecf\u8fc7\u7528\u6237\u6001\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u9002\u7528\u573a\u666f&#xff1a;\n<ul>\n<li>\u6587\u4ef6\u670d\u52a1\u5668\u3001Web \u670d\u52a1\u5668\u7b49\u9700\u8981\u9ad8\u6548\u4f20\u8f93\u6587\u4ef6\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u793a\u4f8b\u4ee3\u7801&#xff1a;<span class=\"token keyword\">int<\/span> fd <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">open<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;file.txt&#034;<\/span><span class=\"token punctuation\">,<\/span> O_RDONLY<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> sock <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">socket<\/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><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">sendfile<\/span><span class=\"token punctuation\">(<\/span>sock<span class=\"token punctuation\">,<\/span> fd<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> file_size<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<\/ul>\n<h4>2. mmap &#043; write<\/h4>\n<ul>\n<li>\u63cf\u8ff0&#xff1a;\n<ul>\n<li>\u4f7f\u7528 mmap \u5c06\u6587\u4ef6\u6620\u5c04\u5230\u7528\u6237\u7a7a\u95f4\u5185\u5b58\u5730\u5740&#xff0c;\u7136\u540e\u76f4\u63a5\u8c03\u7528 write \u5c06\u6570\u636e\u53d1\u9001\u5230\u5957\u63a5\u5b57\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5de5\u4f5c\u539f\u7406&#xff1a;\n<ul>\n<li>\u907f\u514d\u4e86\u4ece\u78c1\u76d8\u8bfb\u53d6\u5230\u7528\u6237\u7f13\u51b2\u533a\u7684\u989d\u5916\u62f7\u8d1d\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u9002\u7528\u573a\u666f&#xff1a;\n<ul>\n<li>\u9700\u8981\u7075\u6d3b\u8bbf\u95ee\u6587\u4ef6\u5185\u5bb9&#xff0c;\u540c\u65f6\u51cf\u5c11\u62f7\u8d1d\u6b21\u6570\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u793a\u4f8b\u4ee3\u7801&#xff1a;<span class=\"token keyword\">int<\/span> fd <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">open<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;file.txt&#034;<\/span><span class=\"token punctuation\">,<\/span> O_RDONLY<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> data <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">mmap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> file_size<span class=\"token punctuation\">,<\/span> PROT_READ<span class=\"token punctuation\">,<\/span> MAP_PRIVATE<span class=\"token punctuation\">,<\/span> fd<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">write<\/span><span class=\"token punctuation\">(<\/span>sock<span class=\"token punctuation\">,<\/span> data<span class=\"token punctuation\">,<\/span> file_size<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n <\/li>\n<\/ul>\n<h4>3. splice \u7cfb\u7edf\u8c03\u7528<\/h4>\n<ul>\n<li>\u63cf\u8ff0&#xff1a;\n<ul>\n<li>splice \u5141\u8bb8\u5728\u4e24\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e4b\u95f4\u76f4\u63a5\u79fb\u52a8\u6570\u636e&#xff0c;\u51cf\u5c11\u62f7\u8d1d\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5de5\u4f5c\u539f\u7406&#xff1a;\n<ul>\n<li>\u6570\u636e\u901a\u8fc7\u5185\u6838\u7f13\u51b2\u533a\u76f4\u63a5\u4ece\u4e00\u4e2a\u7ba1\u9053\u79fb\u52a8\u5230\u53e6\u4e00\u4e2a\u76ee\u6807&#xff0c;\u65e0\u9700\u7528\u6237\u6001\u5e72\u9884\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u9002\u7528\u573a\u666f&#xff1a;\n<ul>\n<li>\u7f51\u7edc\u6570\u636e\u6d41\u5904\u7406\u3001\u6587\u4ef6\u590d\u5236\u7b49\u573a\u666f\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u793a\u4f8b\u4ee3\u7801&#xff1a;<span class=\"token keyword\">int<\/span> pipefd<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">pipe<\/span><span class=\"token punctuation\">(<\/span>pipefd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">splice<\/span><span class=\"token punctuation\">(<\/span>file_fd<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> pipefd<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> file_size<span class=\"token punctuation\">,<\/span> SPLICE_F_MOVE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">splice<\/span><span class=\"token punctuation\">(<\/span>pipefd<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> sock_fd<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> file_size<span class=\"token punctuation\">,<\/span> SPLICE_F_MOVE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<\/li>\n<\/ul>\n<h2>\u4e8c\u3001EventLoop \u6a21\u5757<\/h2>\n<p>EventLoop \u662f Muduo \u7684\u6838\u5fc3\u6a21\u5757\u4e4b\u4e00&#xff0c;\u8d1f\u8d23\u7ba1\u7406\u4e8b\u4ef6\u5faa\u73af\u548c\u5206\u53d1\u3002<\/p>\n<h3>\u5982\u4f55\u7406\u89e3RunInLoop\u8fd9\u4e00\u7c7b\u7684\u51fd\u6570&#xff1f;<\/h3>\n<p>\u5728 Muduo \u7f51\u7edc\u5e93\u4e2d&#xff0c;runInLoop \u8fd9\u4e00\u7c7b\u51fd\u6570\u662f\u4e3a\u4e86\u5728\u7279\u5b9a\u7684\u7ebf\u7a0b&#xff08;\u5373\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b&#xff09;\u4e2d\u6267\u884c\u67d0\u4e9b\u4efb\u52a1\u800c\u8bbe\u8ba1\u7684\u3002\u5b83\u4eec\u7684\u4e3b\u8981\u7528\u9014\u662f\u89e3\u51b3\u8de8\u7ebf\u7a0b\u8c03\u7528\u7684\u95ee\u9898&#xff0c;\u786e\u4fdd\u4efb\u52a1\u5728\u6b63\u786e\u7684\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u4e2d\u6267\u884c\u3002<\/p>\n<p>runInLoop \u7684\u4e3b\u8981\u4f5c\u7528\u662f\u5c06\u4e00\u4e2a\u4efb\u52a1&#xff08;\u901a\u5e38\u662f\u56de\u8c03\u51fd\u6570&#xff09;\u6dfb\u52a0\u5230\u5f53\u524d\u7684 EventLoop \u4e2d\u6267\u884c\u3002\u5982\u679c\u8c03\u7528 runInLoop \u7684\u7ebf\u7a0b\u4e0d\u662f\u4e8b\u4ef6\u5faa\u73af\u7684\u7ebf\u7a0b&#xff0c;\u90a3\u4e48\u4efb\u52a1\u4f1a\u88ab\u653e\u5165\u4e8b\u4ef6\u5faa\u73af\u7684\u4efb\u52a1\u961f\u5217\u4e2d&#xff0c;\u7b49\u5f85\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b\u6765\u6267\u884c\u3002<\/p>\n<h4>\u4e3a\u4ec0\u4e48\u9700\u8981 runInLoop&#xff1f;<\/h4>\n<p>\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d&#xff0c;Muduo \u7684 EventLoop \u662f\u7ebf\u7a0b\u4e0d\u5b89\u5168\u7684&#xff0c;\u5373&#xff1a;\u4e0d\u80fd\u76f4\u63a5\u4ece\u591a\u4e2a\u7ebf\u7a0b\u8bbf\u95ee\u6216\u4fee\u6539\u540c\u4e00\u4e2a EventLoop\u3002 \u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b\u9700\u8981\u5bf9\u4e8b\u4ef6\u8fdb\u884c\u5904\u7406&#xff0c;\u800c\u5176\u4ed6\u7ebf\u7a0b\u53ef\u80fd\u9700\u8981\u5411\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b\u53d1\u8d77\u67d0\u4e9b\u64cd\u4f5c&#xff08;\u4f8b\u5982\u6ce8\u518c\u56de\u8c03\u51fd\u6570\u3001\u4fee\u6539\u5b9a\u65f6\u5668\u7b49&#xff09;\u3002<\/p>\n<p>\u95ee\u9898&#xff1a; \u5982\u679c\u76f4\u63a5\u5728\u975e\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b\u4e2d\u8c03\u7528\u4e8b\u4ef6\u5faa\u73af\u7684\u64cd\u4f5c&#xff0c;\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u7ade\u4e89\u6216\u5d29\u6e83\u3002 \u89e3\u51b3&#xff1a; \u4f7f\u7528 runInLoop \u5c06\u4efb\u52a1\u5b89\u5168\u5730\u8f6c\u79fb\u5230\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b\u4e2d&#xff0c;\u786e\u4fdd\u4efb\u52a1\u5728\u6b63\u786e\u7684\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u4e2d\u88ab\u6267\u884c\u3002 runInLoop \u7684\u5b9e\u73b0\u539f\u7406<\/p>\n<p>\u4ee5\u4e0b\u662f runInLoop \u7684\u4e3b\u8981\u5de5\u4f5c\u673a\u5236&#xff1a;<\/p>\n<p>1\u3001\u5224\u65ad\u7ebf\u7a0b\u4e0a\u4e0b\u6587&#xff1a; \u5982\u679c\u8c03\u7528 runInLoop \u7684\u7ebf\u7a0b\u662f\u5f53\u524d EventLoop \u6240\u5c5e\u7684\u7ebf\u7a0b&#xff0c;\u5219\u76f4\u63a5\u6267\u884c\u4efb\u52a1\u3002 \u5982\u679c\u8c03\u7528\u7ebf\u7a0b\u4e0d\u662f\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b&#xff0c;\u5219\u5c06\u4efb\u52a1\u6dfb\u52a0\u5230\u4efb\u52a1\u961f\u5217\u4e2d&#xff0c;\u7b49\u5f85\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b\u6765\u6267\u884c\u3002<\/p>\n<p>2\u3001\u4efb\u52a1\u961f\u5217&#xff1a; EventLoop \u5185\u90e8\u6709\u4e00\u4e2a\u4efb\u52a1\u961f\u5217&#xff08;\u901a\u5e38\u662f std::vector&lt;std::function&lt;void()&gt;&gt;&#xff09;&#xff0c;\u7528\u4e8e\u5b58\u50a8\u9700\u8981\u5728\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b\u4e2d\u6267\u884c\u7684\u4efb\u52a1\u3002<\/p>\n<p>3\u3001\u5524\u9192\u673a\u5236&#xff1a; \u5982\u679c\u4efb\u52a1\u662f\u4ece\u5176\u4ed6\u7ebf\u7a0b\u6dfb\u52a0\u7684&#xff0c;EventLoop \u9700\u8981\u88ab\u5524\u9192&#xff08;\u901a\u5e38\u901a\u8fc7\u5411 wakeupFd \u5199\u5165\u6570\u636e&#xff09;&#xff0c;\u4ee5\u4fbf\u5c3d\u5feb\u5904\u7406\u65b0\u589e\u7684\u4efb\u52a1\u3002<\/p>\n<h4>runInLoop \u7684\u4f18\u70b9<\/h4>\n<p>\u7ebf\u7a0b\u5b89\u5168&#xff1a; \u786e\u4fdd\u6240\u6709\u4efb\u52a1\u90fd\u5728\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b\u4e2d\u6267\u884c&#xff0c;\u907f\u514d\u6570\u636e\u7ade\u4e89\u3002 \u9ad8\u6548\u5524\u9192&#xff1a; \u4f7f\u7528\u8f7b\u91cf\u7ea7\u5524\u9192\u673a\u5236&#xff08;\u5982 eventfd \u6216 pipe&#xff09;\u5feb\u901f\u54cd\u5e94\u4efb\u52a1\u3002 \u4efb\u52a1\u805a\u5408&#xff1a; \u901a\u8fc7\u4efb\u52a1\u961f\u5217&#xff0c;\u53ef\u4ee5\u6279\u91cf\u5904\u7406\u4efb\u52a1&#xff0c;\u51cf\u5c11\u4e0a\u4e0b\u6587\u5207\u6362\u3002<\/p>\n<h3>&#xff08;1&#xff09;\u51cf\u5c11\u9501\u7684\u4f7f\u7528&#8212;-\u65e0\u9501\u961f\u5217<\/h3>\n<p>\u95ee\u9898&#xff1a;EventLoop \u7684\u8de8\u7ebf\u7a0b\u64cd\u4f5c&#xff08;\u5982 runInLoop \u548c queueInLoop&#xff09;\u4f7f\u7528\u4e86\u9501\u4fdd\u62a4\u3002 \u4f18\u5316&#xff1a; \u4f7f\u7528\u65e0\u9501\u961f\u5217&#xff08;\u5982\u57fa\u4e8e lock-free \u7684 CAS \u7b97\u6cd5&#xff09;\u66ff\u4ee3\u5f53\u524d\u7684 std::mutex\u3002 \u5728\u5355\u7ebf\u7a0b\u573a\u666f\u4e0b&#xff0c;\u5b8c\u5168\u79fb\u9664\u9501\u3002<\/p>\n<p>\u65e0\u9501\u961f\u5217&#xff08;Lock-Free Queue&#xff09;\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784&#xff0c;\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\u4f7f\u7528\u65f6&#xff0c;\u4e0d\u9700\u8981\u4f9d\u8d56\u4f20\u7edf\u7684\u4e92\u65a5\u9501\u6765\u540c\u6b65\u7ebf\u7a0b\u95f4\u7684\u8bbf\u95ee&#xff0c;\u800c\u662f\u901a\u8fc7\u786c\u4ef6\u652f\u6301\u7684\u539f\u5b50\u64cd\u4f5c&#xff08;\u5982 CAS&#xff0c;Compare-And-Swap&#xff09;\u6765\u5b8c\u6210\u7ebf\u7a0b\u5b89\u5168\u7684\u64cd\u4f5c\u3002\u65e0\u9501\u961f\u5217\u901a\u5e38\u5177\u6709\u66f4\u9ad8\u7684\u6027\u80fd&#xff0c;\u56e0\u4e3a\u5b83\u907f\u514d\u4e86\u9501\u7684\u5f00\u9500\u548c\u53ef\u80fd\u7684\u7ebf\u7a0b\u963b\u585e\u3002<\/p>\n<p>\u5b9e\u73b0\u601d\u8def<\/p>\n<p>\u4f7f\u7528 CAS \u64cd\u4f5c&#xff1a; CAS(ptr, old, new)&#xff1a;\u5982\u679c *ptr &#061;&#061; old&#xff0c;\u5219\u5c06 *ptr \u66f4\u65b0\u4e3a new&#xff0c;\u5426\u5219\u4e0d\u66f4\u65b0&#xff0c;\u5e76\u8fd4\u56de\u662f\u5426\u6210\u529f\u3002 \u8bb0\u5f55\u961f\u5217\u5934\u548c\u5c3e&#xff1a; \u4f7f\u7528\u539f\u5b50\u53d8\u91cf\u6307\u5411\u961f\u5217\u7684\u5934\u90e8\u548c\u5c3e\u90e8\u3002 \u751f\u4ea7\u8005\u64cd\u4f5c&#xff08;Enqueue&#xff09;&#xff1a; \u627e\u5230\u5f53\u524d\u5c3e\u8282\u70b9\u5e76\u5c1d\u8bd5\u5c06\u65b0\u8282\u70b9\u63d2\u5165\u5230\u5c3e\u90e8\u3002 \u6d88\u8d39\u8005\u64cd\u4f5c&#xff08;Dequeue&#xff09;&#xff1a; \u627e\u5230\u5f53\u524d\u5934\u8282\u70b9\u5e76\u5c1d\u8bd5\u79fb\u9664\u5b83\u3002<\/p>\n<h3>&#xff08;2&#xff09;\u4f18\u5316\u5b9a\u65f6\u5668\u5904\u7406&#8212;-\u65f6\u95f4\u8f6e\u4ee3\u66ff\u6700\u5c0f\u5806<\/h3>\n<p>\u95ee\u9898&#xff1a;EventLoop \u7684\u5b9a\u65f6\u5668\u4f7f\u7528\u4e86\u6700\u5c0f\u5806\u5b58\u50a8&#xff0c;\u590d\u6742\u5ea6\u4e3a O(log N)&#xff0c;\u5f53\u5b9a\u65f6\u4efb\u52a1\u91cf\u975e\u5e38\u591a\u65f6\u53ef\u80fd\u4f1a\u4ea7\u751f\u6027\u80fd\u74f6\u9888\u3002 \u4f18\u5316&#xff1a; \u4f7f\u7528\u5206\u5c42\u65f6\u95f4\u8f6e&#xff08;TimerWheel&#xff09;\u66ff\u4ee3\u6700\u5c0f\u5806&#xff0c;\u964d\u4f4e\u590d\u6742\u5ea6\u5230 O(1)&#xff0c;\u5c24\u5176\u9002\u5408\u9ad8\u9891\u5b9a\u65f6\u4efb\u52a1\u573a\u666f\u3002<\/p>\n<p>\u4f7f\u7528\u667a\u80fd\u6307\u9488\u7ba1\u7406\u5b9a\u65f6\u4efb\u52a1 \u5728 TimerWheel \u4e2d\u4f7f\u7528 shared_ptr \u548c weak_ptr \u6765\u7ba1\u7406\u5b9a\u65f6\u4efb\u52a1\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u8bbe\u8ba1&#xff0c;\u4e3b\u8981\u76ee\u7684\u662f\u89e3\u51b3 \u5185\u5b58\u7ba1\u7406 \u548c \u8d44\u6e90\u751f\u547d\u5468\u671f\u63a7\u5236 \u7684\u95ee\u9898\u3002 shared_ptr \u548c weak_ptr \u7684\u57fa\u672c\u6982\u5ff5<\/p>\n<p>shared_ptr&#xff1a; \u4e00\u4e2a\u667a\u80fd\u6307\u9488&#xff0c;\u63d0\u4f9b\u5171\u4eab\u6240\u6709\u6743\u3002 \u5f53\u6700\u540e\u4e00\u4e2a shared_ptr \u88ab\u9500\u6bc1\u65f6&#xff0c;\u6240\u7ba1\u7406\u7684\u5bf9\u8c61\u4f1a\u81ea\u52a8\u91ca\u653e\u3002 \u4f7f\u7528 use_count() \u65b9\u6cd5\u53ef\u4ee5\u67e5\u770b\u5f53\u524d\u6709\u591a\u5c11\u4e2a shared_ptr \u5728\u5171\u4eab\u540c\u4e00\u5bf9\u8c61\u3002<\/p>\n<p>weak_ptr&#xff1a; \u4e00\u4e2a\u4e0d\u5f71\u54cd\u5f15\u7528\u8ba1\u6570\u7684\u667a\u80fd\u6307\u9488\u3002 \u53ea\u80fd\u901a\u8fc7 lock() \u65b9\u6cd5\u8bbf\u95ee\u6240\u7ba1\u7406\u7684\u5bf9\u8c61\u3002 \u5f53\u6240\u6307\u5411\u7684\u5bf9\u8c61\u88ab\u9500\u6bc1\u65f6&#xff0c;weak_ptr \u4f1a\u53d8\u4e3a\u65e0\u6548&#xff08;\u5373 expired() \u8fd4\u56de true&#xff09;\u3002<\/p>\n<h4>\u4e3a\u4ec0\u4e48 TimerWheel \u9700\u8981 weak_ptr&#xff1f;<\/h4>\n<p>\u5728 TimerWheel \u4e2d&#xff0c;\u4e00\u4e2a\u5b9a\u65f6\u4efb\u52a1\u53ef\u80fd\u9700\u8981\u88ab\u591a\u4e2a\u5730\u65b9\u5f15\u7528&#xff0c;\u4f8b\u5982&#xff1a;<\/p>\n<p>TimerWheel \u7684\u69fd\u4f4d&#xff1a;\u6bcf\u4e2a\u69fd\u4f4d\u53ef\u80fd\u5b58\u50a8\u4e00\u7ec4\u4efb\u52a1&#xff08;\u901a\u5e38\u662f shared_ptr &lt; TimerTask &gt; &#xff09;\u3002 \u7528\u6237\u4ee3\u7801&#xff1a;\u7528\u6237\u53ef\u80fd\u76f4\u63a5\u6301\u6709\u67d0\u4e2a\u5b9a\u65f6\u4efb\u52a1\u7684\u5f15\u7528&#xff0c;\u4ee5\u4fbf\u968f\u65f6\u53d6\u6d88\u6216\u4fee\u6539\u4efb\u52a1\u3002<\/p>\n<p>\u5982\u679c\u53ea\u4f7f\u7528 shared_ptr&#xff0c;\u4f1a\u5bfc\u81f4\u5faa\u73af\u5f15\u7528\u7684\u95ee\u9898\u3002\u4f8b\u5982&#xff1a;<\/p>\n<p>\u5b9a\u65f6\u4efb\u52a1\u672c\u8eab\u6301\u6709\u5f15\u7528&#xff0c;\u800c TimerWheel \u7684\u69fd\u4f4d\u53c8\u6301\u6709\u5b9a\u65f6\u4efb\u52a1\u7684 shared_ptr\u3002 \u8fd9\u79cd\u60c5\u51b5\u4e0b&#xff0c;shared_ptr \u7684\u5f15\u7528\u8ba1\u6570\u6c38\u8fdc\u4e0d\u4f1a\u964d\u4e3a 0&#xff0c;\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\u3002<\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u79cd\u95ee\u9898&#xff0c;\u4f7f\u7528 weak_ptr \u6765\u6253\u7834\u5faa\u73af\u5f15\u7528&#xff1a;<\/p>\n<p>TimerWheel \u7684\u69fd\u4f4d\u4f7f\u7528 weak_ptr \u5b58\u50a8\u5b9a\u65f6\u4efb\u52a1\u3002 \u7528\u6237\u6301\u6709\u7684 shared_ptr \u51b3\u5b9a\u4e86\u4efb\u52a1\u7684\u751f\u547d\u5468\u671f\u3002<\/p>\n<p>weak_ptr \u7684\u4f5c\u7528<\/p>\n<p>1.\u907f\u514d\u5faa\u73af\u5f15\u7528&#xff1a; \u5982\u679c\u5b9a\u65f6\u4efb\u52a1\u88ab shared_ptr \u5f15\u7528&#xff0c;\u4f46\u69fd\u4f4d\u53ea\u4fdd\u7559\u4e86 weak_ptr&#xff0c;\u5f53\u7528\u6237\u7684 shared_ptr \u88ab\u9500\u6bc1\u65f6&#xff0c;\u4efb\u52a1\u4f1a\u81ea\u52a8\u91ca\u653e&#xff0c;\u907f\u514d\u4e86\u5185\u5b58\u6cc4\u6f0f\u3002<\/p>\n<p>2.\u5f31\u5f15\u7528\u673a\u5236&#xff1a; TimerWheel \u7684\u69fd\u4f4d\u53ea\u9700\u8981\u4e00\u4e2a\u5f31\u5f15\u7528\u6765\u8ddf\u8e2a\u5b9a\u65f6\u4efb\u52a1&#xff0c;\u800c\u4e0d\u9700\u8981\u7ba1\u7406\u5176\u751f\u547d\u5468\u671f\u3002 \u5728\u6267\u884c\u5b9a\u65f6\u4efb\u52a1\u65f6&#xff0c;\u53ef\u4ee5\u901a\u8fc7 weak_ptr::lock() \u68c0\u67e5\u4efb\u52a1\u662f\u5426\u4ecd\u7136\u6709\u6548\u3002\u5982\u679c\u4efb\u52a1\u5df2\u88ab\u7528\u6237\u53d6\u6d88\u6216\u9500\u6bc1&#xff0c;\u5219\u65e0\u9700\u6267\u884c\u3002<\/p>\n<p>3.\u4efb\u52a1\u9500\u6bc1\u7684\u7075\u6d3b\u6027&#xff1a; \u7528\u6237\u53ef\u4ee5\u968f\u65f6\u9500\u6bc1 shared_ptr&#xff0c;\u4ece\u800c\u53d6\u6d88\u4efb\u52a1\u3002 \u540c\u65f6&#xff0c;TimerWheel \u7684\u69fd\u4f4d\u4e0d\u4f1a\u5f71\u54cd\u4efb\u52a1\u7684\u751f\u547d\u5468\u671f\u3002<\/p>\n<h2>\u4e09. ThreadPool \u6a21\u5757<\/h2>\n<p>ThreadPool \u6a21\u5757\u7528\u4e8e\u7ba1\u7406\u7ebf\u7a0b\u6c60&#xff0c;\u5904\u7406\u591a\u7ebf\u7a0b\u4efb\u52a1\u3002<\/p>\n<li>\u4efb\u52a1\u7a83\u53d6&#xff08;Work Stealing&#xff09;\n<ul>\n<li>\u95ee\u9898&#xff1a;\u5f53\u524d ThreadPool \u4f7f\u7528\u4e00\u4e2a\u4efb\u52a1\u961f\u5217&#xff0c;\u53ef\u80fd\u5bfc\u81f4\u67d0\u4e9b\u7ebf\u7a0b\u5904\u4e8e\u7e41\u5fd9\u72b6\u6001&#xff0c;\u800c\u5176\u4ed6\u7ebf\u7a0b\u7a7a\u95f2\u3002<\/li>\n<li>\u4f18\u5316&#xff1a;\n<ul>\n<li>\u5b9e\u73b0\u4efb\u52a1\u7a83\u53d6\u673a\u5236&#xff0c;\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u72ec\u7acb\u7684\u4efb\u52a1\u961f\u5217&#xff0c;\u5f53\u7ebf\u7a0b\u7a7a\u95f2\u65f6\u53ef\u4ee5\u4ece\u5176\u4ed6\u7ebf\u7a0b\u7684\u961f\u5217\u4e2d\u7a83\u53d6\u4efb\u52a1\u3002<\/li>\n<li>\u63d0\u9ad8\u4efb\u52a1\u5206\u914d\u7684\u516c\u5e73\u6027\u548c\u6574\u4f53\u541e\u5410\u91cf\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h2>\u56db\u3001Acceptor \u6a21\u5757<\/h2>\n<p>Acceptor \u6a21\u5757\u8d1f\u8d23\u76d1\u542c\u65b0\u8fde\u63a5\u5e76\u5206\u53d1\u7ed9 TcpConnection\u3002<\/p>\n<li>\u591a\u7ebf\u7a0b\u8d1f\u8f7d\u5747\u8861\n<ul>\n<li>\u95ee\u9898&#xff1a;Acceptor \u9ed8\u8ba4\u5c06\u65b0\u8fde\u63a5\u5206\u914d\u7ed9\u5355\u4e2a\u7ebf\u7a0b&#xff0c;\u53ef\u80fd\u5bfc\u81f4\u7ebf\u7a0b\u8d1f\u8f7d\u4e0d\u5747\u3002<\/li>\n<li>\u4f18\u5316&#xff1a;\n<ul>\n<li>\u5b9e\u73b0\u52a8\u6001\u8d1f\u8f7d\u5747\u8861\u7b97\u6cd5&#xff08;\u5982\u57fa\u4e8e\u7ebf\u7a0b\u8d1f\u8f7d\u6216\u8fde\u63a5\u6570&#xff09;&#xff0c;\u5408\u7406\u5206\u914d\u65b0\u8fde\u63a5\u3002<\/li>\n<li>\u4e3a\u4e86\u5728 Muduo \u7f51\u7edc\u5e93\u7684 Acceptor \u6a21\u5757\u4e2d\u5b9e\u73b0\u52a8\u6001\u8d1f\u8f7d\u5747\u8861\u7b97\u6cd5&#xff08;\u5982\u57fa\u4e8e\u7ebf\u7a0b\u8d1f\u8f7d\u6216\u8fde\u63a5\u6570\u7684\u5206\u914d&#xff09;&#xff0c;\u9700\u8981\u5728\u63a5\u53d7\u65b0\u8fde\u63a5\u65f6&#xff0c;\u52a8\u6001\u5730\u5c06\u8fde\u63a5\u5206\u914d\u7ed9\u8d1f\u8f7d\u6700\u8f7b\u7684\u7ebf\u7a0b\u6216\u4e8b\u4ef6\u5faa\u73af&#xff08;EventLoop&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<p>\u4ee5\u4e0b\u662f\u5b9e\u73b0\u52a8\u6001\u8d1f\u8f7d\u5747\u8861\u7684\u8bbe\u8ba1\u65b9\u6848\u548c\u6b65\u9aa4&#xff1a;<\/p>\n<li>\u52a8\u6001\u5206\u914d&#xff1a;\n<ul>\n<li>\u5f53 Acceptor \u63a5\u6536\u5230\u4e00\u4e2a\u65b0\u7684\u8fde\u63a5\u65f6&#xff0c;\u6839\u636e\u6bcf\u4e2a\u7ebf\u7a0b\u6216 EventLoop \u7684\u5f53\u524d\u8d1f\u8f7d&#xff08;\u5982\u8fde\u63a5\u6570\u6216\u4efb\u52a1\u961f\u5217\u957f\u5ea6&#xff09;&#xff0c;\u5c06\u8fde\u63a5\u5206\u914d\u7ed9\u8d1f\u8f7d\u6700\u8f7b\u7684\u7ebf\u7a0b\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u52a8\u6001\u76d1\u63a7&#xff1a;\n<ul>\n<li>\u6301\u7eed\u8ddf\u8e2a\u6bcf\u4e2a\u7ebf\u7a0b\u7684\u8d1f\u8f7d\u60c5\u51b5&#xff0c;\u786e\u4fdd\u8d1f\u8f7d\u5747\u8861\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u9ad8\u6548\u5206\u53d1&#xff1a;\n<ul>\n<li>\u5206\u914d\u903b\u8f91\u5e94\u5c3d\u91cf\u8f7b\u91cf\u5316&#xff0c;\u907f\u514d\u589e\u52a0\u989d\u5916\u7684\u7cfb\u7edf\u5f00\u9500\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h4>2. \u5173\u952e\u7ec4\u4ef6<\/h4>\n<li>\n<p>\u7ebf\u7a0b\u6c60\u6216 EventLoopThreadPool&#xff1a;<\/p>\n<ul>\n<li>\u7ba1\u7406\u591a\u4e2a EventLoop \u7ebf\u7a0b&#xff0c;\u6bcf\u4e2a\u7ebf\u7a0b\u5904\u7406\u4e00\u5b9a\u6570\u91cf\u7684\u8fde\u63a5\u3002<\/li>\n<li>\u63d0\u4f9b\u63a5\u53e3\u83b7\u53d6\u6bcf\u4e2a\u7ebf\u7a0b\u7684\u8d1f\u8f7d\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8d1f\u8f7d\u76d1\u63a7\u673a\u5236&#xff1a;<\/p>\n<ul>\n<li>\u8ddf\u8e2a\u6bcf\u4e2a\u7ebf\u7a0b\u6216 EventLoop \u7684\u5f53\u524d\u8d1f\u8f7d&#xff08;\u5982\u8fde\u63a5\u6570\u3001\u4efb\u52a1\u961f\u5217\u957f\u5ea6&#xff09;\u3002<\/li>\n<li>\u8d1f\u8f7d\u4fe1\u606f\u53ef\u4ee5\u901a\u8fc7\u8ba1\u6570\u5668\u6216\u5b9a\u65f6\u7edf\u8ba1\u66f4\u65b0\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8d1f\u8f7d\u5747\u8861\u7b97\u6cd5&#xff1a;<\/p>\n<ul>\n<li>\u57fa\u4e8e\u8d1f\u8f7d\u4fe1\u606f\u52a8\u6001\u9009\u62e9\u6700\u4f18\u7684\u7ebf\u7a0b\u3002<\/li>\n<li>\u5178\u578b\u7b97\u6cd5\u5305\u62ec&#xff1a;\n<ul>\n<li>\u6700\u5c11\u8fde\u63a5\u6570\u4f18\u5148&#xff1a;\u5c06\u65b0\u8fde\u63a5\u5206\u914d\u7ed9\u8fde\u63a5\u6570\u6700\u5c11\u7684\u7ebf\u7a0b\u3002<\/li>\n<li>\u4efb\u52a1\u961f\u5217\u957f\u5ea6\u4f18\u5148&#xff1a;\u5c06\u65b0\u8fde\u63a5\u5206\u914d\u7ed9\u4efb\u52a1\u961f\u5217\u6700\u77ed\u7684\u7ebf\u7a0b\u3002<\/li>\n<li>\u52a0\u6743\u968f\u673a\u5206\u914d&#xff1a;\u6839\u636e\u7ebf\u7a0b\u7684\u8d1f\u8f7d\u6743\u91cd\u968f\u673a\u5206\u914d\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>Acceptor \u6a21\u5757\u7684\u6539\u9020&#xff1a;<\/p>\n<ul>\n<li>\u5728\u63a5\u53d7\u65b0\u8fde\u63a5\u65f6\u8c03\u7528\u8d1f\u8f7d\u5747\u8861\u5668&#xff0c;\u5206\u914d\u8fde\u63a5\u5230\u5408\u9002\u7684\u7ebf\u7a0b\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h4>3. \u5b9e\u73b0\u6b65\u9aa4<\/h4>\n<h5>3.1. \u5b9a\u4e49\u8d1f\u8f7d\u5747\u8861\u5668<\/h5>\n<p>\u521b\u5efa\u4e00\u4e2a\u8d1f\u8f7d\u5747\u8861\u5668\u7c7b&#xff0c;\u8d1f\u8d23\u8ddf\u8e2a\u7ebf\u7a0b\u7684\u8d1f\u8f7d\u4fe1\u606f\u5e76\u9009\u62e9\u5408\u9002\u7684\u7ebf\u7a0b\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;vector&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;memory&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;mutex&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;functional&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EventLoop<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u524d\u5411\u58f0\u660e<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">LoadBalancer<\/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\">LoadBalancer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">default<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u6dfb\u52a0\u4e00\u4e2a\u7ebf\u7a0b\u7684\u8d1f\u8f7d\u76d1\u63a7<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">addEventLoop<\/span><span class=\"token punctuation\">(<\/span>EventLoop<span class=\"token operator\">*<\/span> loop<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        std<span class=\"token operator\">::<\/span>lock_guard<span class=\"token operator\">&lt;<\/span>std<span class=\"token operator\">::<\/span>mutex<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">lock<\/span><span class=\"token punctuation\">(<\/span>mutex_<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        eventLoops_<span class=\"token punctuation\">.<\/span><span class=\"token function\">emplace_back<\/span><span class=\"token punctuation\">(<\/span>loop<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u521d\u59cb\u8d1f\u8f7d\u4e3a 0<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u66f4\u65b0\u7ebf\u7a0b\u7684\u8d1f\u8f7d&#xff08;\u6bd4\u5982\u8fde\u63a5\u6570\u53d8\u5316&#xff09;<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">updateLoad<\/span><span class=\"token punctuation\">(<\/span>EventLoop<span class=\"token operator\">*<\/span> loop<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> delta<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        std<span class=\"token operator\">::<\/span>lock_guard<span class=\"token operator\">&lt;<\/span>std<span class=\"token operator\">::<\/span>mutex<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">lock<\/span><span class=\"token punctuation\">(<\/span>mutex_<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 keyword\">auto<\/span><span class=\"token operator\">&amp;<\/span> <span class=\"token punctuation\">[<\/span>eventLoop<span class=\"token punctuation\">,<\/span> load<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">:<\/span> eventLoops_<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>eventLoop <span class=\"token operator\">&#061;&#061;<\/span> loop<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                load <span class=\"token operator\">&#043;&#061;<\/span> delta<span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">break<\/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><\/p>\n<p>    <span class=\"token comment\">\/\/ \u83b7\u53d6\u8d1f\u8f7d\u6700\u8f7b\u7684\u7ebf\u7a0b<\/span><br \/>\n    EventLoop<span class=\"token operator\">*<\/span> <span class=\"token function\">getLeastLoadedEventLoop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        std<span class=\"token operator\">::<\/span>lock_guard<span class=\"token operator\">&lt;<\/span>std<span class=\"token operator\">::<\/span>mutex<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">lock<\/span><span class=\"token punctuation\">(<\/span>mutex_<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        EventLoop<span class=\"token operator\">*<\/span> bestLoop <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> minLoad <span class=\"token operator\">&#061;<\/span> INT_MAX<span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">auto<\/span><span class=\"token operator\">&amp;<\/span> <span class=\"token punctuation\">[<\/span>eventLoop<span class=\"token punctuation\">,<\/span> load<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">:<\/span> eventLoops_<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>load <span class=\"token operator\">&lt;<\/span> minLoad<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                bestLoop <span class=\"token operator\">&#061;<\/span> eventLoop<span class=\"token punctuation\">;<\/span><br \/>\n                minLoad <span class=\"token operator\">&#061;<\/span> load<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\">return<\/span> bestLoop<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 operator\">::<\/span>vector<span class=\"token operator\">&lt;<\/span>std<span class=\"token operator\">::<\/span>pair<span class=\"token operator\">&lt;<\/span>EventLoop<span class=\"token operator\">*<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;&gt;<\/span> eventLoops_<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6bcf\u4e2a\u7ebf\u7a0b\u53ca\u5176\u8d1f\u8f7d<\/span><br \/>\n    std<span class=\"token operator\">::<\/span>mutex mutex_<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4fdd\u62a4\u7ebf\u7a0b\u5b89\u5168<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h5>3.2. \u6539\u9020 Acceptor \u6a21\u5757<\/h5>\n<p>\u4fee\u6539 Acceptor&#xff0c;\u5728\u63a5\u6536\u5230\u65b0\u8fde\u63a5\u65f6\u8c03\u7528\u8d1f\u8f7d\u5747\u8861\u5668&#xff0c;\u9009\u62e9\u6700\u4f18\u7ebf\u7a0b\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&#034;LoadBalancer.h&#034;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&#034;EventLoop.h&#034;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;functional&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;sys\/socket.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;netinet\/in.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;unistd.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Acceptor<\/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\">Acceptor<\/span><span class=\"token punctuation\">(<\/span>EventLoop<span class=\"token operator\">*<\/span> baseLoop<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> port<span class=\"token punctuation\">,<\/span> LoadBalancer<span class=\"token operator\">&amp;<\/span> loadBalancer<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token operator\">:<\/span> <span class=\"token function\">baseLoop_<\/span><span class=\"token punctuation\">(<\/span>baseLoop<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">loadBalancer_<\/span><span class=\"token punctuation\">(<\/span>loadBalancer<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u521b\u5efa\u76d1\u542c\u5957\u63a5\u5b57<\/span><br \/>\n        listenFd_ <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">::<\/span><span class=\"token function\">socket<\/span><span class=\"token punctuation\">(<\/span>AF_INET<span class=\"token punctuation\">,<\/span> SOCK_STREAM <span class=\"token operator\">|<\/span> SOCK_NONBLOCK<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u7ed1\u5b9a\u5730\u5740\u548c\u7aef\u53e3<\/span><br \/>\n        sockaddr_in addr<span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        addr<span class=\"token punctuation\">.<\/span>sin_family <span class=\"token operator\">&#061;<\/span> AF_INET<span class=\"token punctuation\">;<\/span><br \/>\n        addr<span class=\"token punctuation\">.<\/span>sin_addr<span class=\"token punctuation\">.<\/span>s_addr <span class=\"token operator\">&#061;<\/span> INADDR_ANY<span class=\"token punctuation\">;<\/span><br \/>\n        addr<span class=\"token punctuation\">.<\/span>sin_port <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">htons<\/span><span class=\"token punctuation\">(<\/span>port<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token operator\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span>listenFd_<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span>sockaddr<span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;<\/span>addr<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>addr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u5f00\u59cb\u76d1\u542c<\/span><br \/>\n        <span class=\"token operator\">::<\/span><span class=\"token function\">listen<\/span><span class=\"token punctuation\">(<\/span>listenFd_<span class=\"token punctuation\">,<\/span> SOMAXCONN<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token operator\">~<\/span><span class=\"token function\">Acceptor<\/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\">close<\/span><span class=\"token punctuation\">(<\/span>listenFd_<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u5f00\u59cb\u63a5\u53d7\u8fde\u63a5<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">acceptConnections<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            sockaddr_in clientAddr<span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            socklen_t clientLen <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>clientAddr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> connFd <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">::<\/span><span class=\"token function\">accept4<\/span><span class=\"token punctuation\">(<\/span>listenFd_<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span>sockaddr<span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;<\/span>clientAddr<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>clientLen<span class=\"token punctuation\">,<\/span> SOCK_NONBLOCK<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>connFd <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>errno <span class=\"token operator\">&#061;&#061;<\/span> EAGAIN <span class=\"token operator\">||<\/span> errno <span class=\"token operator\">&#061;&#061;<\/span> EWOULDBLOCK<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u65e0\u66f4\u591a\u8fde\u63a5<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    std<span class=\"token operator\">::<\/span>cerr <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;Accept error: &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token function\">strerror<\/span><span class=\"token punctuation\">(<\/span>errno<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token operator\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token keyword\">break<\/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 comment\">\/\/ \u4f7f\u7528\u8d1f\u8f7d\u5747\u8861\u5668\u9009\u62e9\u6700\u4f18\u7ebf\u7a0b<\/span><br \/>\n            EventLoop<span class=\"token operator\">*<\/span> targetLoop <span class=\"token operator\">&#061;<\/span> loadBalancer_<span class=\"token punctuation\">.<\/span><span class=\"token function\">getLeastLoadedEventLoop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>targetLoop<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token comment\">\/\/ \u5c06\u65b0\u8fde\u63a5\u5206\u914d\u7ed9\u76ee\u6807\u7ebf\u7a0b<\/span><br \/>\n                targetLoop<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">runInLoop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">[<\/span>connFd<span class=\"token punctuation\">,<\/span> targetLoop<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    targetLoop<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">addConnection<\/span><span class=\"token punctuation\">(<\/span>connFd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>                <span class=\"token comment\">\/\/ \u66f4\u65b0\u8d1f\u8f7d\u4fe1\u606f<\/span><br \/>\n                loadBalancer_<span class=\"token punctuation\">.<\/span><span class=\"token function\">updateLoad<\/span><span class=\"token punctuation\">(<\/span>targetLoop<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                std<span class=\"token operator\">::<\/span>cerr <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;No available EventLoop to handle connection&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token operator\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token operator\">::<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>connFd<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><\/p>\n<p><span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    EventLoop<span class=\"token operator\">*<\/span> baseLoop_<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4e3b\u7ebf\u7a0b\u7684\u4e8b\u4ef6\u5faa\u73af<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> listenFd_<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u76d1\u542c\u5957\u63a5\u5b57<\/span><br \/>\n    LoadBalancer<span class=\"token operator\">&amp;<\/span> loadBalancer_<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8d1f\u8f7d\u5747\u8861\u5668<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h5>3.3. \u6539\u9020 EventLoop \u6a21\u5757<\/h5>\n<p>\u6269\u5c55 EventLoop&#xff0c;\u652f\u6301\u6dfb\u52a0\u548c\u5904\u7406\u65b0\u8fde\u63a5\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;functional&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;vector&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;mutex&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;unistd.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EventLoop<\/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\">EventLoop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">default<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">void<\/span> <span class=\"token function\">runInLoop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> std<span class=\"token operator\">::<\/span>function<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token operator\">&amp;<\/span> task<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u7b80\u5316\u7684\u4e8b\u4ef6\u5faa\u73af\u4efb\u52a1\u6267\u884c<\/span><br \/>\n        std<span class=\"token operator\">::<\/span>lock_guard<span class=\"token operator\">&lt;<\/span>std<span class=\"token operator\">::<\/span>mutex<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">lock<\/span><span class=\"token punctuation\">(<\/span>mutex_<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        tasks_<span class=\"token punctuation\">.<\/span><span class=\"token function\">emplace_back<\/span><span class=\"token punctuation\">(<\/span>task<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\">addConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> connFd<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        std<span class=\"token operator\">::<\/span>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;Handling new connection on EventLoop: &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">this<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token operator\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n        connections_<span class=\"token punctuation\">.<\/span><span class=\"token function\">emplace_back<\/span><span class=\"token punctuation\">(<\/span>connFd<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\">processTasks<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        std<span class=\"token operator\">::<\/span>vector<span class=\"token operator\">&lt;<\/span>std<span class=\"token operator\">::<\/span>function<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;&gt;<\/span> tasksCopy<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            std<span class=\"token operator\">::<\/span>lock_guard<span class=\"token operator\">&lt;<\/span>std<span class=\"token operator\">::<\/span>mutex<span class=\"token operator\">&gt;<\/span> <span class=\"token function\">lock<\/span><span class=\"token punctuation\">(<\/span>mutex_<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            tasksCopy<span class=\"token punctuation\">.<\/span><span class=\"token function\">swap<\/span><span class=\"token punctuation\">(<\/span>tasks_<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">auto<\/span><span class=\"token operator\">&amp;<\/span> task <span class=\"token operator\">:<\/span> tasksCopy<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">task<\/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 punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n    std<span class=\"token operator\">::<\/span>vector<span class=\"token operator\">&lt;<\/span>std<span class=\"token operator\">::<\/span>function<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&gt;&gt;<\/span> tasks_<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5f85\u5904\u7406\u4efb\u52a1<\/span><br \/>\n    std<span class=\"token operator\">::<\/span>mutex mutex_<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4fdd\u62a4\u4efb\u52a1\u961f\u5217<\/span><br \/>\n    std<span class=\"token operator\">::<\/span>vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> connections_<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5f53\u524d\u8fde\u63a5\u5217\u8868<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<li>\u8fde\u63a5\u9650\u6d41\n<ul>\n<li>\u95ee\u9898&#xff1a;\u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b&#xff0c;\u53ef\u80fd\u4f1a\u540c\u65f6\u63a5\u6536\u5927\u91cf\u8fde\u63a5&#xff0c;\u5bfc\u81f4\u7cfb\u7edf\u8d44\u6e90\u8017\u5c3d\u3002<\/li>\n<li>\u4f18\u5316&#xff1a;\n<ul>\n<li>\u8bbe\u7f6e\u8fde\u63a5\u901f\u7387\u9650\u5236&#xff08;\u5982\u6bcf\u79d2\u6700\u591a\u63a5\u6536 100 \u4e2a\u8fde\u63a5&#xff09;\u3002<\/li>\n<li>\u5728\u8d85\u8fc7\u8fde\u63a5\u9650\u5236\u65f6&#xff0c;\u62d2\u7edd\u65b0\u8fde\u63a5\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h2>\u4e94\u3001\u5b9a\u65f6\u5668\u6a21\u5757<\/h2>\n<p>TimerQueue \u6a21\u5757\u7528\u4e8e\u7ba1\u7406\u5b9a\u65f6\u4efb\u52a1\u3002<\/p>\n<li>\u5206\u5c42\u65f6\u95f4\u8f6e \u95ee\u9898&#xff1a;\u5f53\u524d\u4f7f\u7528\u6700\u5c0f\u5806\u5b58\u50a8\u5b9a\u65f6\u4efb\u52a1&#xff0c;\u5f53\u5b9a\u65f6\u5668\u6570\u91cf\u8f83\u591a\u65f6&#xff0c;\u63d2\u5165\u548c\u5220\u9664\u7684\u590d\u6742\u5ea6\u8f83\u9ad8\u3002 \u4f18\u5316&#xff1a;\u4f7f\u7528\u5206\u5c42\u65f6\u95f4\u8f6e&#xff08;TimerWheel&#xff09;\u7ed3\u6784&#xff0c;\u964d\u4f4e\u590d\u6742\u5ea6\u5230 O(1)\u3002<\/li>\n<p>\u5206\u5c42\u65f6\u95f4\u8f6e\u7684\u8bbe\u8ba1\u7075\u611f\u6765\u6e90\u4e8e\u65f6\u949f\u7684\u5206\u5c42\u7ed3\u6784\u3002\u4f8b\u5982&#xff1a;<\/p>\n<p>\u65f6\u949f\u6709\u79d2\u9488\u3001\u5206\u9488\u3001\u65f6\u9488&#xff0c;\u6bcf\u4e00\u5c42\u8d1f\u8d23\u5904\u7406\u4e0d\u540c\u7684\u65f6\u95f4\u7c92\u5ea6\u3002 \u5f53\u79d2\u9488\u5b8c\u6210\u4e00\u5708&#xff08;60 \u79d2&#xff09;&#xff0c;\u4f1a\u63a8\u52a8\u5206\u9488\u5411\u524d\u8fc8\u8fdb\u4e00\u683c\u3002<\/p>\n<p>\u7c7b\u4f3c\u7684&#xff0c;\u5206\u5c42\u65f6\u95f4\u8f6e\u5c06\u65f6\u95f4\u5212\u5206\u4e3a\u591a\u4e2a\u5c42\u7ea7&#xff0c;\u6bcf\u4e00\u5c42\u662f\u4e00\u4e2a\u73af\u5f62\u961f\u5217&#xff0c;\u961f\u5217\u4e2d\u7684\u6bcf\u4e2a\u69fd&#xff08;slot&#xff09;\u5b58\u50a8\u5bf9\u5e94\u65f6\u95f4\u95f4\u9694\u7684\u5b9a\u65f6\u4efb\u52a1\u3002\u5f53\u65f6\u95f4\u8f6e\u7684\u67d0\u4e00\u5c42\u8f6c\u52a8\u4e00\u5708\u540e&#xff0c;\u89e6\u53d1\u4e0b\u4e00\u5c42\u7684\u8f6c\u52a8\u3002 \u4eae\u70b9&#xff1a;\u4f7f\u7528\u667a\u80fd\u6307\u9488\u7ba1\u7406\u4efb\u52a1TimerTask \u5206\u5c42\u65f6\u95f4\u8f6e\u7684\u7ed3\u6784<\/p>\n<p>1\u3001\u65f6\u95f4\u8f6e\u5c42\u7ea7&#xff1a; \u6bcf\u4e00\u5c42\u662f\u4e00\u4e2a\u73af\u5f62\u6570\u7ec4&#xff08;\u7c7b\u4f3c\u65f6\u949f\u7684\u8f6e\u76d8&#xff09;\u3002 \u6bcf\u4e2a\u69fd\u4ee3\u8868\u4e00\u4e2a\u56fa\u5b9a\u7684\u65f6\u95f4\u95f4\u9694&#xff08;\u65f6\u95f4\u7c92\u5ea6&#xff09;\u3002 \u7b2c\u4e00\u5c42\u7684\u65f6\u95f4\u7c92\u5ea6\u6700\u5c0f&#xff0c;\u8d8a\u9ad8\u5c42\u7684\u65f6\u95f4\u7c92\u5ea6\u8d8a\u5927\u3002<\/p>\n<p>2\u3001\u6bcf\u4e2a\u69fd\u7684\u5185\u5bb9&#xff1a; \u6bcf\u4e2a\u69fd\u5b58\u50a8\u5b9a\u65f6\u4efb\u52a1\u7684\u5217\u8868\u3002 \u6bcf\u4e2a\u4efb\u52a1\u9700\u8981\u643a\u5e26\u989d\u5916\u7684\u5143\u6570\u636e&#xff08;\u4f8b\u5982\u4efb\u52a1\u5230\u671f\u65f6\u95f4&#xff09;\u3002<\/p>\n<p>3\u3001\u5c42\u7ea7\u7684\u5173\u7cfb&#xff1a; \u7b2c\u4e00\u5c42\u8d1f\u8d23\u7ba1\u7406\u6700\u5c0f\u65f6\u95f4\u7c92\u5ea6\u7684\u4efb\u52a1\u3002 \u5982\u679c\u67d0\u4e2a\u4efb\u52a1\u7684\u65f6\u95f4\u8d85\u8fc7\u5f53\u524d\u5c42\u7684\u6700\u5927\u65f6\u95f4\u8303\u56f4&#xff0c;\u5219\u88ab\u63a8\u8fdb\u5230\u4e0b\u4e00\u7ea7\u65f6\u95f4\u8f6e\u3002<\/p>\n<p>\u5206\u5c42\u65f6\u95f4\u8f6e\u7684\u5de5\u4f5c\u539f\u7406 \u63d2\u5165\u4efb\u52a1<\/p>\n<p>\u6839\u636e\u4efb\u52a1\u7684\u5230\u671f\u65f6\u95f4&#xff0c;\u8ba1\u7b97\u4efb\u52a1\u6240\u5728\u7684\u65f6\u95f4\u8f6e\u5c42\u7ea7\u548c\u69fd\u4f4d&#xff1a; \u69fd\u4f4d\u7d22\u5f15 &#061; ( \u5230\u671f\u65f6\u95f4 , \/ , \u65f6\u95f4\u7c92\u5ea6 ) , \u5982\u679c\u4efb\u52a1\u7684\u5230\u671f\u65f6\u95f4\u8d85\u8fc7\u5f53\u524d\u65f6\u95f4\u8f6e\u5c42\u7ea7\u7684\u65f6\u95f4\u8303\u56f4&#xff0c;\u5219\u5c06\u4efb\u52a1\u9012\u5f52\u63a8\u5165\u5230\u66f4\u9ad8\u5c42\u7684\u65f6\u95f4\u8f6e\u3002<\/p>\n<p>\u5b9a\u65f6\u5668\u8f6e\u8f6c<\/p>\n<p>\u65f6\u95f4\u8f6e\u4ee5\u56fa\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u8f6e\u8f6c\u4e00\u683c&#xff08;\u7c7b\u4f3c\u79d2\u9488\u8f6c\u52a8&#xff09;\u3002 \u6bcf\u6b21\u8f6e\u8f6c\u5230\u4e00\u4e2a\u69fd\u4f4d\u65f6&#xff0c;\u89e6\u53d1\u8be5\u69fd\u4e2d\u7684\u4efb\u52a1\u3002 \u5982\u679c\u67d0\u4e2a\u4efb\u52a1\u7684\u5230\u671f\u65f6\u95f4\u672a\u5230&#xff0c;\u5219\u5c06\u5176\u91cd\u65b0\u5206\u914d\u5230\u66f4\u9ad8\u5c42\u65f6\u95f4\u8f6e\u7684\u5bf9\u5e94\u69fd\u4f4d\u3002<\/p>\n<p>\u4efb\u52a1\u89e6\u53d1 \u5f53\u8f6e\u76d8\u8f6c\u52a8\u5230\u4efb\u52a1\u6240\u5728\u7684\u69fd\u4f4d&#xff0c;\u5e76\u4e14\u4efb\u52a1\u7684\u5230\u671f\u65f6\u95f4\u4e0e\u5f53\u524d\u65f6\u95f4\u5339\u914d\u65f6&#xff0c;\u89e6\u53d1\u4efb\u52a1\u3002 \u5206\u5c42\u65f6\u95f4\u8f6e\u7684\u4f18\u52bf \u9ad8\u6027\u80fd&#xff1a; \u63d2\u5165\u3001\u5220\u9664\u3001\u89e6\u53d1\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u63a5\u8fd1 (O(1))\u3002 \u9002\u7528\u4e8e\u5927\u89c4\u6a21\u5b9a\u65f6\u4efb\u52a1\u7684\u573a\u666f&#xff08;\u4f8b\u5982\u5b9e\u65f6\u7cfb\u7edf\u7684\u4e8b\u4ef6\u8c03\u5ea6&#xff09;\u3002<\/p>\n<p>\u7075\u6d3b\u6027&#xff1a; \u652f\u6301\u591a\u5c42\u65f6\u95f4\u8f6e&#xff0c;\u9002\u5e94\u4e0d\u540c\u7684\u65f6\u95f4\u8303\u56f4\u548c\u7c92\u5ea6\u9700\u6c42\u3002<\/p>\n<p>\u5185\u5b58\u6548\u7387&#xff1a; \u7531\u4e8e\u91c7\u7528\u73af\u5f62\u6570\u7ec4\u5b58\u50a8\u4efb\u52a1&#xff0c;\u5185\u5b58\u5360\u7528\u8f83\u5c0f\u3002<\/p>\n<p>\u5206\u5c42\u65f6\u95f4\u8f6e\u7684\u5e94\u7528\u573a\u666f<\/p>\n<p>\u7f51\u7edc\u670d\u52a1\u5668&#xff1a; TCP \u8fde\u63a5\u7684\u8d85\u65f6\u7ba1\u7406\u3002 \u5e94\u7528\u4e8e\u9ad8\u6027\u80fd\u7f51\u7edc\u5e93&#xff08;\u5982 Netty\u3001Muduo \u7b49&#xff09;\u3002 \u5b9e\u65f6\u7cfb\u7edf&#xff1a; \u4e8b\u4ef6\u9a71\u52a8\u7684\u8c03\u5ea6\u7cfb\u7edf\u3002 \u9700\u8981\u9ad8\u6548\u7ba1\u7406\u5927\u91cf\u5b9a\u65f6\u4efb\u52a1\u7684\u573a\u666f\u3002 \u5206\u5e03\u5f0f\u7cfb\u7edf&#xff1a; \u5206\u5e03\u5f0f\u4efb\u52a1\u8c03\u5ea6&#xff08;\u5982\u5206\u5e03\u5f0f\u9501\u7684\u8fc7\u671f\u65f6\u95f4\u7ba1\u7406&#xff09;\u3002 \u6e38\u620f\u5f15\u64ce&#xff1a; \u6e38\u620f\u4e2d\u7684\u5012\u8ba1\u65f6\u3001\u6280\u80fd\u51b7\u5374\u7b49\u4e8b\u4ef6\u3002<\/p>\n<p>\u5206\u5c42\u65f6\u95f4\u8f6e\u7684\u5c40\u9650\u6027<\/p>\n<p>\u65f6\u95f4\u7c92\u5ea6\u9650\u5236&#xff1a; \u65f6\u95f4\u8f6e\u7684\u7c92\u5ea6\u51b3\u5b9a\u4e86\u5b9a\u65f6\u5668\u7684\u7cbe\u5ea6&#xff0c;\u4efb\u52a1\u89e6\u53d1\u53ef\u80fd\u4f1a\u6709\u4e00\u5b9a\u7684\u5ef6\u8fdf\u3002 \u4efb\u52a1\u5206\u5c42\u590d\u6742\u6027&#xff1a; \u8de8\u5c42\u4efb\u52a1\u9700\u8981\u9012\u5f52\u63a8\u8fdb&#xff0c;\u53ef\u80fd\u589e\u52a0\u4e00\u5b9a\u7684\u5b9e\u73b0\u590d\u6742\u6027\u3002 \u975e\u5b9e\u65f6\u6027&#xff1a; \u9ad8\u5c42\u65f6\u95f4\u8f6e\u7684\u4efb\u52a1\u53ef\u80fd\u9700\u8981\u7b49\u5f85\u4f4e\u5c42\u65f6\u95f4\u8f6e\u8f6c\u52a8\u5b8c\u6210&#xff0c;\u5bfc\u81f4\u5ef6\u8fdf\u3002<\/p>\n<li>\u6279\u91cf\u5b9a\u65f6\u5668 \u95ee\u9898&#xff1a;\u5927\u91cf\u5b9a\u65f6\u4efb\u52a1\u53ef\u80fd\u89e6\u53d1\u9891\u7e41\u7684\u4e0a\u4e0b\u6587\u5207\u6362\u3002 \u4f18\u5316&#xff1a; \u5408\u5e76\u591a\u4e2a\u5b9a\u65f6\u5668\u4e8b\u4ef6&#xff0c;\u4f7f\u7528\u6279\u91cf\u5904\u7406\u903b\u8f91\u51cf\u5c11\u7cfb\u7edf\u8c03\u7528\u3002<\/li>\n<hr \/>\n<h2>\u516d\u3001\u65e5\u5fd7\u6a21\u5757<\/h2>\n<p>Logging \u6a21\u5757\u662f Muduo \u7684\u65e5\u5fd7\u7cfb\u7edf\u3002<\/p>\n<li>\n<p>\u5f02\u6b65\u65e5\u5fd7\u4f18\u5316<\/p>\n<ul>\n<li>\u95ee\u9898&#xff1a;\u5f53\u524d\u5f02\u6b65\u65e5\u5fd7\u53ef\u80fd\u4f1a\u963b\u585e\u9ad8\u4f18\u5148\u7ea7\u4efb\u52a1\u7684\u5904\u7406\u3002<\/li>\n<li>\u4f18\u5316&#xff1a;\n<ul>\n<li>\u4f7f\u7528\u53cc\u7f13\u51b2\u533a\u5b9e\u73b0\u5f02\u6b65\u65e5\u5fd7&#xff0c;\u51cf\u5c11\u963b\u585e\u3002<\/li>\n<li>\u63d0\u4f9b\u65e5\u5fd7\u538b\u7f29\u529f\u80fd&#xff0c;\u51cf\u5c11\u78c1\u76d8 I\/O \u5f00\u9500\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u65e5\u5fd7\u5206\u7ea7<\/p>\n<ul>\n<li>\u95ee\u9898&#xff1a;\u65e5\u5fd7\u7cfb\u7edf\u4e0d\u652f\u6301\u52a8\u6001\u8c03\u6574\u65e5\u5fd7\u7ea7\u522b\u3002<\/li>\n<li>\u4f18\u5316&#xff1a;\n<ul>\n<li>\u652f\u6301\u6309\u6a21\u5757\u6216\u7ebf\u7a0b\u52a8\u6001\u8c03\u6574\u65e5\u5fd7\u7ea7\u522b&#xff0c;\u63d0\u9ad8\u8c03\u8bd5\u6548\u7387\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h2>\u4e03\u3001 \u9519\u8bef\u5904\u7406\u4e0e\u76d1\u63a7<\/h2>\n<p>Muduo \u7f3a\u4e4f\u5bf9\u9519\u8bef\u548c\u6027\u80fd\u7684\u5168\u9762\u76d1\u63a7\u3002<\/p>\n<p>\u5c42\u7ea7\u5f0f\u5f02\u5e38\u7ba1\u7406 \u5728 Muduo \u5e93\u7684\u57fa\u7840\u4e0a\u8bbe\u8ba1\u4e00\u4e2a\u5f02\u5e38\u673a\u5236&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u5f15\u5165\u57fa\u4e8e C&#043;&#043; \u591a\u6001 \u7684\u5f02\u5e38\u5c42\u6b21\u7ed3\u6784\u6765\u5206\u7c7b\u548c\u5904\u7406\u4e0d\u540c\u7c7b\u578b\u7684\u5f02\u5e38\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u8bbe\u8ba1\u601d\u8def&#xff1a;<\/p>\n<hr \/>\n<h3>1. \u8bbe\u8ba1\u539f\u5219<\/h3>\n<li>\u5f02\u5e38\u5206\u5c42&#xff1a;\n<ul>\n<li>\u5b9a\u4e49\u4e00\u4e2a\u57fa\u7c7b MuduoException&#xff0c;\u6240\u6709\u5177\u4f53\u5f02\u5e38\u7c7b\u578b\u90fd\u4ece\u8be5\u57fa\u7c7b\u6d3e\u751f\u3002<\/li>\n<li>\u4f7f\u7528 C&#043;&#043; \u591a\u6001&#xff08;\u57fa\u7c7b\u5f15\u7528\u6355\u83b7\u6d3e\u751f\u7c7b\u5f02\u5e38&#xff09;\u6765\u5b9e\u73b0\u7edf\u4e00\u7684\u5f02\u5e38\u5904\u7406\u903b\u8f91\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5f02\u5e38\u5206\u7c7b&#xff1a;\n<ul>\n<li>\u6839\u636e Muduo \u7684\u6838\u5fc3\u6a21\u5757&#xff08;\u5982 EventLoop, TcpConnection, TimerQueue \u7b49&#xff09;&#xff0c;\u5b9a\u4e49\u5177\u4f53\u7684\u5f02\u5e38\u7c7b\u578b\u3002\u4f8b\u5982&#xff1a;\n<ul>\n<li>EventLoopException&#xff1a;\u5904\u7406\u4e8b\u4ef6\u5faa\u73af\u76f8\u5173\u7684\u5f02\u5e38\u3002<\/li>\n<li>TcpConnectionException&#xff1a;\u5904\u7406 TCP \u8fde\u63a5\u76f8\u5173\u7684\u5f02\u5e38\u3002<\/li>\n<li>TimerQueueException&#xff1a;\u5904\u7406\u5b9a\u65f6\u5668\u76f8\u5173\u7684\u5f02\u5e38\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u5f02\u5e38\u6355\u83b7&#xff1a;\n<ul>\n<li>\u5728\u5168\u5c40\u6216\u6a21\u5757\u7ea7\u522b\u6355\u83b7 MuduoException \u7c7b\u578b\u7684\u5f02\u5e38&#xff0c;\u5e76\u4e3a\u4e0d\u540c\u7684\u6d3e\u751f\u7c7b\u63d0\u4f9b\u5177\u4f53\u7684\u5904\u7406\u903b\u8f91\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u65e5\u5fd7\u548c\u53cd\u9988&#xff1a;\n<ul>\n<li>\u6355\u83b7\u5f02\u5e38\u540e&#xff0c;\u8bb0\u5f55\u65e5\u5fd7\u6216\u63d0\u4f9b\u53cd\u9988\u4fe1\u606f&#xff0c;\u65b9\u4fbf\u8c03\u8bd5\u548c\u95ee\u9898\u8ffd\u8e2a\u3002<\/li>\n<\/ul>\n<\/li>\n<hr \/>\n<h3>2. \u5b9e\u73b0\u6b65\u9aa4<\/h3>\n<h4>2.1. \u5b9a\u4e49\u5f02\u5e38\u57fa\u7c7b<\/h4>\n<p>\u521b\u5efa\u4e00\u4e2a\u901a\u7528\u7684\u5f02\u5e38\u57fa\u7c7b MuduoException&#xff0c;\u5b83\u7ee7\u627f\u81ea std::exception&#xff0c;\u5e76\u63d0\u4f9b\u57fa\u672c\u7684\u5f02\u5e38\u4fe1\u606f\u63a5\u53e3\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;exception&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;string&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MuduoException<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> std<span class=\"token operator\">::<\/span><span class=\"token class-name\">exception<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">explicit<\/span> <span class=\"token function\">MuduoException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> std<span class=\"token operator\">::<\/span>string<span class=\"token operator\">&amp;<\/span> message<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token operator\">:<\/span> <span class=\"token function\">message_<\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u8fd4\u56de\u5f02\u5e38\u4fe1\u606f<\/span><br \/>\n    <span class=\"token keyword\">virtual<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> <span class=\"token function\">what<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">noexcept<\/span> override <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> message_<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><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u63d0\u4f9b\u5f02\u5e38\u7c7b\u578b\u7684\u6807\u8bc6<\/span><br \/>\n    <span class=\"token keyword\">virtual<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> <span class=\"token function\">type<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">noexcept<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#034;MuduoException&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">protected<\/span><span class=\"token operator\">:<\/span><br \/>\n    std<span class=\"token operator\">::<\/span>string message_<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h4>2.2. \u5b9a\u4e49\u6d3e\u751f\u5f02\u5e38\u7c7b<\/h4>\n<p>\u4e3a Muduo \u7684\u6838\u5fc3\u6a21\u5757\u5b9a\u4e49\u5177\u4f53\u7684\u5f02\u5e38\u7c7b\u578b&#xff0c;\u8fd9\u4e9b\u7c7b\u4ece MuduoException \u6d3e\u751f\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&#034;MuduoException.h&#034;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4e8b\u4ef6\u5faa\u73af\u76f8\u5173\u5f02\u5e38<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EventLoopException<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">MuduoException<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">explicit<\/span> <span class=\"token function\">EventLoopException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> std<span class=\"token operator\">::<\/span>string<span class=\"token operator\">&amp;<\/span> message<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token operator\">:<\/span> <span class=\"token function\">MuduoException<\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">virtual<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> <span class=\"token function\">type<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">noexcept<\/span> override <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#034;EventLoopException&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ TCP \u8fde\u63a5\u76f8\u5173\u5f02\u5e38<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TcpConnectionException<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">MuduoException<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">explicit<\/span> <span class=\"token function\">TcpConnectionException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> std<span class=\"token operator\">::<\/span>string<span class=\"token operator\">&amp;<\/span> message<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token operator\">:<\/span> <span class=\"token function\">MuduoException<\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">virtual<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> <span class=\"token function\">type<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">noexcept<\/span> override <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#034;TcpConnectionException&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5b9a\u65f6\u5668\u76f8\u5173\u5f02\u5e38<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TimerQueueException<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">MuduoException<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">explicit<\/span> <span class=\"token function\">TimerQueueException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> std<span class=\"token operator\">::<\/span>string<span class=\"token operator\">&amp;<\/span> message<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token operator\">:<\/span> <span class=\"token function\">MuduoException<\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">virtual<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> <span class=\"token function\">type<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">noexcept<\/span> override <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#034;TimerQueueException&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h4>2.3. \u5728\u6838\u5fc3\u6a21\u5757\u4e2d\u629b\u51fa\u5f02\u5e38<\/h4>\n<p>\u5728 Muduo \u7684\u6838\u5fc3\u6a21\u5757\u4e2d&#xff0c;\u5f53\u68c0\u6d4b\u5230\u9519\u8bef\u60c5\u51b5\u65f6&#xff0c;\u629b\u51fa\u5bf9\u5e94\u7684\u5f02\u5e38\u3002<\/p>\n<p>\u793a\u4f8b&#xff1a;\u5728 EventLoop \u6a21\u5757\u4e2d\u629b\u51fa\u5f02\u5e38<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&#034;DerivedExceptions.h&#034;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">EventLoop<\/span> <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\">loop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u6a21\u62df\u4e8b\u4ef6\u5faa\u73af\u9519\u8bef<\/span><br \/>\n            <span class=\"token keyword\">throw<\/span> <span class=\"token function\">EventLoopException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Event loop encountered an error!&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> MuduoException<span class=\"token operator\">&amp;<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">handleException<\/span><span class=\"token punctuation\">(<\/span>e<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\">void<\/span> <span class=\"token function\">handleException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> MuduoException<span class=\"token operator\">&amp;<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u6839\u636e\u5f02\u5e38\u7c7b\u578b\u8fdb\u884c\u5904\u7406<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>std<span class=\"token operator\">::<\/span><span class=\"token function\">string<\/span><span class=\"token punctuation\">(<\/span>e<span class=\"token punctuation\">.<\/span><span class=\"token function\">type<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;EventLoopException&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            std<span class=\"token operator\">::<\/span>cerr <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;[EventLoop Error] &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> e<span class=\"token punctuation\">.<\/span><span class=\"token function\">what<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token operator\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u6267\u884c\u7279\u5b9a\u7684\u6062\u590d\u903b\u8f91<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            std<span class=\"token operator\">::<\/span>cerr <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;[Unknown Error] &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> e<span class=\"token punctuation\">.<\/span><span class=\"token function\">what<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token operator\">::<\/span>endl<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><span class=\"token punctuation\">;<\/span><\/p>\n<hr \/>\n<h4>2.4. \u5168\u5c40\u6355\u83b7\u5f02\u5e38<\/h4>\n<p>\u53ef\u4ee5\u5728\u5e94\u7528\u7684\u5165\u53e3\u51fd\u6570\u4e2d\u7edf\u4e00\u6355\u83b7\u6240\u6709\u7684 MuduoException \u7c7b\u578b\u5f02\u5e38\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&#034;EventLoop.cpp&#034;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        EventLoop loop<span class=\"token punctuation\">;<\/span><br \/>\n        loop<span class=\"token punctuation\">.<\/span><span class=\"token function\">loop<\/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 keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> MuduoException<span class=\"token operator\">&amp;<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        std<span class=\"token operator\">::<\/span>cerr <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;Caught a MuduoException: &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> e<span class=\"token punctuation\">.<\/span><span class=\"token function\">type<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034; &#8211; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> e<span class=\"token punctuation\">.<\/span><span class=\"token function\">what<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token operator\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> std<span class=\"token operator\">::<\/span>exception<span class=\"token operator\">&amp;<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        std<span class=\"token operator\">::<\/span>cerr <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;Caught a std::exception: &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> e<span class=\"token punctuation\">.<\/span><span class=\"token function\">what<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token operator\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/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> <span class=\"token punctuation\">{<\/span><br \/>\n        std<span class=\"token operator\">::<\/span>cerr <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;Caught an unknown exception&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token operator\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>3. \u4f18\u5316\u4e0e\u6269\u5c55<\/h3>\n<h4>\u7ec6\u5316\u5f02\u5e38\u4fe1\u606f<\/h4>\n<ul>\n<li>\u4e3a\u6bcf\u4e2a\u5f02\u5e38\u7c7b\u578b\u6dfb\u52a0\u66f4\u591a\u4e0a\u4e0b\u6587\u4fe1\u606f&#xff08;\u5982\u9519\u8bef\u7801\u3001\u6a21\u5757\u540d\u79f0\u3001\u64cd\u4f5c\u6b65\u9aa4\u7b49&#xff09;\u3002<\/li>\n<li>\u793a\u4f8b&#xff1a;<span class=\"token keyword\">explicit<\/span> <span class=\"token function\">TcpConnectionException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> std<span class=\"token operator\">::<\/span>string<span class=\"token operator\">&amp;<\/span> message<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> errorCode<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token operator\">:<\/span> <span class=\"token function\">MuduoException<\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">errorCode_<\/span><span class=\"token punctuation\">(<\/span>errorCode<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">errorCode<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> errorCode_<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<h4>\u7ed3\u5408\u65e5\u5fd7\u8bb0\u5f55<\/h4>\n<ul>\n<li>\u5728\u6355\u83b7\u5f02\u5e38\u540e&#xff0c;\u5c06\u5f02\u5e38\u4fe1\u606f\u5199\u5165\u65e5\u5fd7&#xff0c;\u65b9\u4fbf\u540e\u7eed\u6392\u67e5\u95ee\u9898\u3002<\/li>\n<li>\u793a\u4f8b&#xff1a;<span class=\"token keyword\">void<\/span> <span class=\"token function\">logException<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> MuduoException<span class=\"token operator\">&amp;<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5199\u5165\u65e5\u5fd7<\/span><br \/>\n    std<span class=\"token operator\">::<\/span>ofstream <span class=\"token function\">logFile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;error.log&#034;<\/span><span class=\"token punctuation\">,<\/span> std<span class=\"token operator\">::<\/span>ios<span class=\"token operator\">::<\/span>app<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    logFile <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;[&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> e<span class=\"token punctuation\">.<\/span><span class=\"token function\">type<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;] &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> e<span class=\"token punctuation\">.<\/span><span class=\"token function\">what<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> std<span class=\"token operator\">::<\/span>endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>\n <\/li>\n<\/ul>\n<h4>\u5f02\u5e38\u6062\u590d\u673a\u5236<\/h4>\n<ul>\n<li>\u6839\u636e\u5f02\u5e38\u7c7b\u578b&#xff0c;\u5c1d\u8bd5\u6267\u884c\u4e0d\u540c\u7684\u6062\u590d\u7b56\u7565&#xff1a;\n<ul>\n<li>\u91cd\u542f\u4e8b\u4ef6\u5faa\u73af\u3002<\/li>\n<li>\u5173\u95ed\u5e76\u91cd\u5efa TCP \u8fde\u63a5\u3002<\/li>\n<li>\u91cd\u65b0\u6ce8\u518c\u5b9a\u65f6\u5668\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>\u652f\u6301\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u578b<\/h4>\n<ul>\n<li>\u63d0\u4f9b\u4e00\u4e2a\u5de5\u5382\u51fd\u6570\u6216\u5b8f&#xff0c;\u65b9\u4fbf\u7528\u6237\u5b9a\u4e49\u65b0\u7684\u5f02\u5e38\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">DEFINE_EXCEPTION<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">,<\/span> base<span class=\"token punctuation\">)<\/span>               <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">name<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">base<\/span><\/span> <span class=\"token punctuation\">{<\/span>                         <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span>                                            <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token keyword\">explicit<\/span> <span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> std<span class=\"token operator\">::<\/span>string<span class=\"token operator\">&amp;<\/span> message<span class=\"token punctuation\">)<\/span>      <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token operator\">:<\/span> <span class=\"token function\">base<\/span><span class=\"token punctuation\">(<\/span>message<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span>                         <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token keyword\">virtual<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> <span class=\"token function\">type<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">noexcept<\/span> <span class=\"token punctuation\">{<\/span>    <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n        <span class=\"token expression\"><span class=\"token keyword\">return<\/span> #name<span class=\"token punctuation\">;<\/span>                              <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token punctuation\">}<\/span>                                              <\/span><span class=\"token punctuation\">\\\\<\/span><br \/>\n<span class=\"token expression\"><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/span><\/span><\/p>\n<p>\u4f7f\u7528\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token function\">DEFINE_EXCEPTION<\/span><span class=\"token punctuation\">(<\/span>CustomException<span class=\"token punctuation\">,<\/span> MuduoException<span class=\"token punctuation\">)<\/span><\/p>\n<hr \/>\n<li>\u57fa\u4e8e\u591a\u6001\u7684\u5f02\u5e38\u673a\u5236&#xff1a;\n<ul>\n<li>\u4f7f\u7528\u57fa\u7c7b MuduoException \u7edf\u4e00\u7ba1\u7406\u5f02\u5e38&#xff0c;\u6d3e\u751f\u7c7b\u63d0\u4f9b\u5177\u4f53\u7684\u5f02\u5e38\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6a21\u5757\u5316\u5f02\u5e38\u5206\u7c7b&#xff1a;\n<ul>\n<li>\u6839\u636e Muduo \u7684\u6838\u5fc3\u6a21\u5757\u8bbe\u8ba1\u6d3e\u751f\u5f02\u5e38\u7c7b&#xff0c;\u4f8b\u5982 EventLoopException\u3001TcpConnectionException\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u65e5\u5fd7\u548c\u6062\u590d&#xff1a;\n<ul>\n<li>\u6355\u83b7\u5f02\u5e38\u65f6\u8bb0\u5f55\u65e5\u5fd7&#xff0c;\u5e76\u6839\u636e\u5f02\u5e38\u7c7b\u578b\u6267\u884c\u6062\u590d\u7b56\u7565\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6269\u5c55\u6027\u548c\u7075\u6d3b\u6027&#xff1a;\n<ul>\n<li>\u901a\u8fc7\u5de5\u5382\u51fd\u6570\u6216\u5b8f\u652f\u6301\u7528\u6237\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<\/li>\n<p>\u901a\u8fc7\u8fd9\u79cd\u8bbe\u8ba1&#xff0c;\u53ef\u4ee5\u5728 Muduo \u7684\u57fa\u7840\u4e0a\u5b9e\u73b0\u4e00\u4e2a\u7075\u6d3b\u3001\u53ef\u6269\u5c55\u7684\u5f02\u5e38\u673a\u5236&#xff0c;\u65e2\u6ee1\u8db3\u4e86\u9519\u8bef\u68c0\u6d4b\u7684\u9700\u6c42&#xff0c;\u53c8\u589e\u5f3a\u4e86\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u5065\u58ee\u6027\u3002<\/p>\n<p>\u6027\u80fd\u76d1\u63a7<\/p>\n<ul>\n<li>\u589e\u52a0\u6027\u80fd\u76d1\u63a7\u63a5\u53e3&#xff0c;\u7edf\u8ba1\u6bcf\u4e2a\u6a21\u5757\u7684\u5ef6\u8fdf\u3001\u541e\u5410\u91cf\u548c\u9519\u8bef\u7387\u3002<\/li>\n<\/ul>\n<hr \/>\n<p>\u7b49\u5f85\u8fdb\u4e00\u6b65\u66f4\u65b0\u4e0e\u66f4\u6b63~<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb704\u6b21\uff0c\u70b9\u8d5e11\u6b21\uff0c\u6536\u85cf20\u6b21\u3002\u6587\u7ae0\u63a2\u8ba8\u4e86\u4effmuduo\u5e93\u7684\u5e76\u53d1\u670d\u52a1\u5668\u4f18\u5316\u65b9\u6848\uff0c\u91cd\u70b9\u5206\u6790\u4e86buffer\u6a21\u5757\u548cEventLoop\u6a21\u5757\u7684\u6539\u8fdb\u7b56\u7565\u3002\u5728buffer\u6a21\u5757\u4e2d\uff0c\u63d0\u51fa\u4e86\u73af\u5f62\u7f13\u51b2\u533a+\u5b9a\u65f6\u6269\u5bb9\u3001\u53cc\u7f13\u51b2\u3001\u6570\u636e\u4e22\u5f03\u7b56\u7565\u4ee5\u53ca\u96f6\u62f7\u8d1d\u6280\u672f\uff0c\u4ee5\u63d0\u9ad8\u5185\u5b58\u5229\u7528\u7387\u548c\u6570\u636e\u4f20\u8f93\u6548\u7387\u3002EventLoop\u6a21\u5757\u5219\u901a\u8fc7\u51cf\u5c11\u9501\u7684\u4f7f\u7528\u3001\u4f18\u5316\u5b9a\u65f6\u5668\u5904\u7406\u7b49\u65b9\u5f0f\u63d0\u5347\u6027\u80fd\uff0c\u5982\u4f7f\u7528\u65e0\u9501\u961f\u5217\u66ff\u4ee3\u4f20\u7edf\u9501\u673a\u5236\uff0c\u4ee5\u53ca\u91c7\u7528\u65f6\u95f4\u8f6e\u4ee3\u66ff\u6700\u5c0f\u5806\u6765\u964d\u4f4e\u5b9a\u65f6\u4efb\u52a1\u5904\u7406\u7684\u590d\u6742\u5ea6\u3002\u8fd9\u4e9b\u4f18\u5316\u65b9\u6848\u65e8\u5728\u63d0\u5347\u670d\u52a1\u5668\u7684\u5e76\u53d1\u5904\u7406\u80fd\u529b\u548c\u8d44\u6e90\u5229\u7528\u7387\uff0c\u9002\u7528\u4e8e\u9ad8\u8d1f\u8f7d\u3001\u5b9e\u65f6\u6027\u8981\u6c42\u9ad8\u7684\u573a\u666f\u3002<\/p>\n","protected":false},"author":2,"featured_media":37726,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,58,1039,43,44,1279],"topic":[],"class_list":["post-37727","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-c","tag-linux","tag-muduo","tag-43","tag-44","tag-1279"],"yoast_head":"<!-- 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