{"id":22940,"date":"2025-04-19T06:41:53","date_gmt":"2025-04-18T22:41:53","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/22940.html"},"modified":"2025-04-19T06:41:53","modified_gmt":"2025-04-18T22:41:53","slug":"%e3%80%90c%e9%ab%98%e5%b9%b6%e5%8f%91%e6%9c%8d%e5%8a%a1%e5%99%a8webserver%e3%80%91-18%ef%bc%9a%e4%ba%8b%e4%bb%b6%e5%a4%84%e7%90%86%e6%a8%a1%e5%bc%8f%e4%b8%8e%e7%ba%bf%e7%a8%8b%e6%b1%a0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/22940.html","title":{"rendered":"\u3010C++\u9ad8\u5e76\u53d1\u670d\u52a1\u5668WebServer\u3011-18\uff1a\u4e8b\u4ef6\u5904\u7406\u6a21\u5f0f\u4e0e\u7ebf\u7a0b\u6c60"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418224150-6802d52ef3113.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<\/p>\n<h4>\u672c\u6587\u76ee\u5f55<\/h4>\n<ul>\n<li>\u4e00\u3001\u4e8b\u4ef6\u5904\u7406\u6a21\u5f0f<\/li>\n<li>\n<ul>\n<li>1.1 Reactor\u6a21\u5f0f<\/li>\n<li>1.2 Proactor\u6a21\u5f0f<\/li>\n<li>1.3 \u540c\u6b65IO\u6a21\u62dfProactor\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001\u7ebf\u7a0b\u6c60<\/li>\n<\/ul>\n<h2>\u4e00\u3001\u4e8b\u4ef6\u5904\u7406\u6a21\u5f0f<\/h2>\n<p>\u670d\u52a1\u5668\u7a0b\u5e8f\u901a\u5e38\u9700\u8981\u5904\u7406\u4e09\u7c7b\u4e8b\u4ef6&#xff1a;I\/O\u4e8b\u4ef6\u3001\u4fe1\u53f7\u3001\u5b9a\u65f6\u4e8b\u4ef6\u3002<\/p>\n<p>\u5bf9\u5e94\u7684\u6709\u4e24\u79cd\u9ad8\u6548\u7684\u4e8b\u4ef6\u5904\u7406\u6a21\u5f0f&#xff1a;Reactor\u548cProactor&#xff0c;\u540c\u6b65I\/O\u901a\u5e38\u7528\u4e8eReacotr\u6a21\u5f0f&#xff0c;\u5f02\u6b65I\/O\u6a21\u578b\u7528\u4e8e\u5b9e\u73b0Proactor\u6a21\u5f0f\u3002<\/p>\n<h3>1.1 Reactor\u6a21\u5f0f<\/h3>\n<p>\u8981\u6c42\u4e3b\u7ebf\u7a0b&#xff08;I\/O\u5904\u7406\u5355\u5143&#xff09;\u53ea\u8d1f\u8d23\u76d1\u542c\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e0a\u662f\u5426\u6709\u4e8b\u53d1\u751f&#xff0c;\u6709\u7684\u8bdd\u5c31\u7acb\u5373\u5c06\u8be5\u4e8b\u4ef6\u901a\u77e5\u5de5\u4f5c\u7ebf\u7a0b&#xff08;\u903b\u8f91\u5355\u5143&#xff09;&#xff0c;\u5c06socket\u53ef\u8bfb\u53ef\u5199\u4e8b\u4ef6\u653e\u5165\u8bf7\u6c42\u961f\u5217&#xff0c;\u4ea4\u7ed9\u5de5\u4f5c\u7ebf\u7a0b\u5904\u7406\u3002\u9664\u6b64\u4e4b\u5916&#xff0c;\u4e3b\u7ebf\u7a0b\u4e0d\u505a\u4efb\u4f55\u5176\u4ed6\u5b9e\u8d28\u6027\u7684\u5de5\u4f5c\u3002\u8bfb\u5199\u6570\u636e\u3001\u63a5\u53d7\u65b0\u7684\u8fde\u63a5\u3001\u5904\u7406\u5ba2\u6237\u7aef\u8bf7\u6c42\u5747\u5728\u5de5\u4f5c\u7ebf\u7a0b\u4e2d\u5b8c\u6210\u3002<\/p>\n<p>\u4f7f\u7528\u540c\u6b65I\/O&#xff08;\u4ee5epoll_wait\u4e3a\u4f8b\u5b50&#xff09;\u5b9e\u73b0\u7684Reactor\u5de5\u4f5c\u6d41\u7a0b\u5982\u4e0b&#xff1a;<\/p>\n<p>1\u3001\u4e3b\u7ebf\u7a0b\u5f80 epoll\u5185\u6838\u4e8b\u4ef6\u8868\u4e2d\u6ce8\u518csocket\u4e0a\u7684\u8bfb\u5c31\u7eea\u4e8b\u4ef6\u3002 2\u3001\u4e3b\u7ebf\u7a0b\u8c03\u7528epoll_wait&#xff0c;\u7b49\u5f85socket\u4e0a\u6709\u6570\u636e\u53ef\u8bfb\u3002 3\u3001\u5f53socket\u4e0a\u6709\u6570\u636e\u53ef\u8bfb\u65f6\u5019&#xff0c;epoll_wait\u901a\u77e5\u4e3b\u7ebf\u7a0b&#xff0c;\u4e3b\u7ebf\u7a0b\u5c06socket\u53ef\u8bfb\u4e8b\u4ef6\u653e\u5165\u8bf7\u6c42\u961f\u5217\u4e2d\u3002 4\u3001\u7761\u7720\u5728\u8bf7\u6c42\u961f\u5217\u4e0a\u7684\u67d0\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u88ab\u5524\u9192&#xff0c;\u4ecesocket\u8bfb\u53d6\u6570\u636e&#xff0c;\u5e76\u5904\u7406\u5ba2\u6237\u7684\u8bf7\u6c42&#xff0c;\u7136\u540e\u5f80 epoll\u5185\u6838\u4e8b\u4ef6\u8868\u4e2d\u6ce8\u518c\u8be5socket\u4e0a\u7684\u5199\u5c31\u7eea\u4e8b\u4ef6\u3002 5\u3001\u4e3b\u7ebf\u7a0b\u8c03\u7528epoll_wait\u7b49\u5f85socket\u53ef\u5199\u3002 6\u3001\u5f53socket\u53ef\u5199\u65f6&#xff0c;epoll_wait\u901a\u77e5\u4e3b\u7ebf\u7a0b&#xff0c;\u4e3b\u7ebf\u7a0b\u5c06socket\u53ef\u5199\u4e8b\u4ef6\u653e\u5165\u8bf7\u6c42\u961f\u5217\u3002 7\u3001\u7761\u7720\u5728\u8bf7\u6c42\u961f\u5217\u4e0a\u7684\u67d0\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u88ab\u5524\u9192&#xff0c;\u5f80socket\u4e0a\u5199\u5165\u670d\u52a1\u5668\u5904\u7406\u5ba2\u6237\u8bf7\u6c42\u7684\u7ed3\u679c\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418224151-6802d52f58233.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>1.2 Proactor\u6a21\u5f0f<\/h3>\n<p>Proactor \u6a21\u5f0f\u5c06\u6240\u6709 I\/O \u64cd\u4f5c\u90fd\u4ea4\u7ed9\u4e3b\u7ebf\u7a0b\u548c\u5185\u6838\u6765\u5904\u7406(\u8fdb\u884c\u8bfb\u3001\u5199)&#xff0c;\u5de5\u4f5c\u7ebf\u7a0b\u4ec5\u4ec5\u8d1f\u8d23\u4e1a\u52a1\u903b\u8f91\u3002\u4f7f\u7528\u5f02\u6b65 I\/O \u6a21\u578b(\u4ee5 aio_read \u548c aio_write \u4e3a\u4f8b)\u5b9e\u73b0\u7684 Proactor \u6a21\u5f0f\u7684\u5de5\u4f5c\u6d41\u7a0b\u5982\u4e0b&#xff1a;<\/p>\n<p>1.\u4e3b\u7ebf\u7a0b\u8c03\u7528 aio_read \u51fd\u6570\u5411\u5185\u6838\u6ce8\u518c socket \u4e0a\u7684\u8bfb\u5b8c\u6210\u4e8b\u4ef6&#xff0c;\u5e76\u544a\u8bc9\u5185\u6838\u7528\u6237\u8bfb\u7f13\u51b2\u533a\u7684\u4f4d\u7f6e\u4ee5\u53ca\u8bfb\u64cd\u4f5c\u5b8c\u6210\u65f6\u5982\u4f55\u901a\u77e5\u5e94\u7528\u7a0b\u5e8f(\u8fd9\u91cc\u4ee5\u4fe1\u53f7\u4e3a\u4f8b)\u3002 2.\u4e3b\u7ebf\u7a0b\u7ee7\u7eed\u5904\u7406\u5176\u4ed6\u903b\u8f91\u3002 3.\u5f53 socket \u4e0a\u7684\u6570\u636e\u88ab\u8bfb\u5165\u7528\u6237\u7f13\u51b2\u533a\u540e&#xff0c;\u5185\u6838\u5c06\u5411\u5e94\u7528\u7a0b\u5e8f\u53d1\u9001\u4e00\u4e2a\u4fe1\u53f7&#xff0c;\u4ee5\u901a\u77e5\u5e94\u7528\u7a0b\u5e8f\u6570\u636e\u5df2\u7ecf\u53ef\u7528\u3002 4.\u5e94\u7528\u7a0b\u5e8f\u9884\u5148\u5b9a\u4e49\u597d\u7684\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u9009\u62e9\u4e00\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u6765\u5904\u7406\u5ba2\u6237\u8bf7\u6c42\u3002\u5de5\u4f5c\u7ebf\u7a0b\u5904\u7406\u5b8c\u5ba2\u6237\u8bf7\u6c42\u540e&#xff0c;\u8c03\u7528 aio_write \u51fd\u6570\u5411\u5185\u6838\u6ce8\u518c socket \u4e0a\u7684\u5199\u5b8c\u6210\u4e8b\u4ef6&#xff0c;\u5e76\u544a\u8bc9\u5185\u6838\u7528\u6237\u5199\u7f13\u51b2\u533a\u7684\u4f4d\u7f6e&#xff0c;\u4ee5\u53ca\u5199\u64cd\u4f5c\u5b8c\u6210\u65f6\u5982\u4f55\u901a\u77e5\u5e94\u7528\u7a0b\u5e8f\u3002 5.\u4e3b\u7ebf\u7a0b\u7ee7\u7eed\u5904\u7406\u5176\u4ed6\u903b\u8f91\u3002 6.\u5f53\u7528\u6237\u7f13\u51b2\u533a\u7684\u6570\u636e\u88ab\u5199\u5165 socket \u4e4b\u540e&#xff0c;\u5185\u6838\u5c06\u5411\u5e94\u7528\u7a0b\u5e8f\u53d1\u9001\u4e00\u4e2a\u4fe1\u53f7&#xff0c;\u4ee5\u901a\u77e5\u5e94\u7528\u7a0b\u5e8f\u6570\u636e\u5df2\u7ecf\u53d1\u9001\u5b8c\u6bd5\u3002 7.\u5e94\u7528\u7a0b\u5e8f\u9884\u5148\u5b9a\u4e49\u597d\u7684\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u9009\u62e9\u4e00\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u6765\u505a\u5584\u540e\u5904\u7406&#xff0c;\u6bd4\u5982\u51b3\u5b9a\u662f\u5426\u5173\u95ed socket\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418224151-6802d52f963cf.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>1.3 \u540c\u6b65IO\u6a21\u62dfProactor\u6a21\u5f0f<\/h3>\n<p>\u4f7f\u7528\u540c\u6b65 I\/0 \u65b9\u5f0f\u6a21\u62df\u51fa Proactor \u6a21\u5f0f\u3002\u539f\u7406\u662f:\u4e3b\u7ebf\u7a0b\u6267\u884c\u6570\u636e\u8bfb\u5199\u64cd\u4f5c&#xff0c;\u8bfb\u5199\u5b8c\u6210\u4e4b\u540e&#xff0c;\u4e3b\u7ebf\u7a0b\u5411\u5de5\u4f5c\u7ebf\u7a0b\u901a\u77e5\u8fd9\u4e00&#034;\u5b8c\u6210\u4e8b\u4ef6\u201d\u3002\u90a3\u4e48\u4ece\u5de5\u4f5c\u7ebf\u7a0b\u7684\u89d2\u5ea6\u6765\u770b&#xff0c;\u5b83\u4eec\u5c31\u76f4\u63a5\u83b7\u5f97\u4e86\u6570\u636e\u8bfb\u5199\u7684\u7ed3\u679c&#xff0c;\u63a5\u4e0b\u6765\u8981\u505a\u7684\u53ea\u662f\u5bf9\u8bfb\u5199\u7684\u7ed3\u679c\u8fdb\u884c\u903b\u8f91\u5904\u7406\u3002<\/p>\n<p>\u4f7f\u7528\u540c\u6b65 I\/0 \u6a21\u578b(\u4ee5 epoll _wait\u4e3a\u4f8b)\u6a21\u62df\u51fa\u7684 Proactor \u6a21\u5f0f\u7684\u5de5\u4f5c\u6d41\u7a0b\u5982\u4e0b: 1.\u4e3b\u7ebf\u7a0b\u5f80 epoll \u5185\u6838\u4e8b\u4ef6\u8868\u4e2d\u6ce8\u518c socket \u4e0a\u7684\u8bfb\u5c31\u7eea\u4e8b\u4ef6\u3002 2. \u4e3b\u7ebf\u7a0b\u8c03\u7528 epoll _wait \u7b49\u5f85 socket \u4e0a\u6709\u6570\u636e\u53ef\u8bfb\u3002 3.\u5f53 socket \u4e0a\u6709\u6570\u636e\u53ef\u8bfb\u65f6&#xff0c;epoll wait \u901a\u77e5\u4e3b\u7ebf\u7a0b\u3002\u4e3b\u7ebf\u7a0b\u4ece socket \u5faa\u73af\u8bfb\u53d6\u6570\u636e&#xff0c;\u76f4\u5230\u6ca1\u6709\u66f4\u591a\u6570\u636e\u53ef\u8bfb&#xff0c;\u7136\u540e\u5c06\u8bfb\u53d6\u5230\u7684\u6570\u636e\u5c01\u88c5\u6210\u4e00\u4e2a\u8bf7\u6c42\u5bf9\u8c61\u5e76\u63d2\u5165\u8bf7\u6c42\u961f\u5217\u3002 4.\u7761\u7720\u5728\u8bf7\u6c42\u961f\u5217\u4e0a\u7684\u67d0\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u88ab\u5524\u9192&#xff0c;\u5b83\u83b7\u5f97\u8bf7\u6c42\u5bf9\u8c61\u5e76\u5904\u7406\u5ba2\u6237\u8bf7\u6c42&#xff0c;\u7136\u540e\u5f80 epoll \u5185\u6838\u4e8b\u4ef6\u8868\u4e2d\u6ce8\u518c socket \u4e0a\u7684\u5199\u5c31\u7eea\u4e8b\u4ef6\u3002 5.\u4e3b\u7ebf\u7a0b\u8c03\u7528 epoll wait \u7b49\u5f85 socket \u53ef\u5199, 6.\u5f53 socket \u53ef\u5199\u65f6&#xff0c;epoll_wait \u901a\u77e5\u4e3b\u7ebf\u7a0b\u3002\u4e3b\u7ebf\u7a0b\u5f80 socket 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