{"id":29202,"date":"2023-05-11T08:22:52","date_gmt":"2023-05-11T00:22:52","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=29202"},"modified":"2023-07-30T23:50:08","modified_gmt":"2023-07-30T15:50:08","slug":"epoll%e3%80%81poll%e3%80%81select%e6%9c%89%e5%93%aa%e4%ba%9b%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/29202.html","title":{"rendered":"epoll\u3001poll\u3001select\u6709\u54ea\u4e9b\u533a\u522b"},"content":{"rendered":"<blockquote class=\"wp-block-quote\">\n<p>epoll\u3001poll\u3001select\u7684\u533a\u522b\u662f\uff1a1\u3001\u5185\u6838\u652f\u6301\uff1b2\u3001\u7cfb\u7edf\u8c03\u7528\u6570\u91cf\uff1b3\u3001\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\uff1b4\u3001\u6570\u636e\u7ed3\u6784\uff1b5\u3001\u89e6\u53d1\u6a21\u5f0f\u3002select\u662f\u6700\u53e4\u8001\u7684\u591a\u8def\u590d\u7528\u673a\u5236\uff0c\u5b83\u65e9\u4e8eLinux\u7684\u5185\u6838\u7248\u672c2.0\uff0c\u5df2\u7ecf\u6210\u4e3a\u4e86Unix\u7f51\u7edc\u7f16\u7a0b\u4e2d\u7ecf\u5178\u7684\u591a\u8def\u590d\u7528\u673a\u5236\u3002<\/p>\n<\/blockquote>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" alt=\"\" class=\"wp-image-29204\" decoding=\"async\" height=\"421\" sizes=\"(max-width: 680px) 100vw, 680px\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/05\/\u95ee\u7b54\u6a21\u677f680-\u00d7-421-\u50cf\u7d20-2023-05-11T082200.737-1.jpg?x-oss-process=image\/auto-orient,1\/format,webp\" srcset=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/05\/\u95ee\u7b54\u6a21\u677f680-\u00d7-421-\u50cf\u7d20-2023-05-11T082200.737-1.jpg?x-oss-process=image\/auto-orient,1\/format,webp 680w, https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/05\/\u95ee\u7b54\u6a21\u677f680-\u00d7-421-\u50cf\u7d20-2023-05-11T082200.737-1-300x186.jpg 300w\" width=\"680\"\/><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\">\u4e00\u3001epoll\u3001poll\u3001select\u7684\u533a\u522b<\/h2>\n<h3 class=\"wp-block-heading\">1\u3001\u5185\u6838\u652f\u6301<\/h3>\n<p>select\u662f\u6700\u53e4\u8001\u7684\u591a\u8def\u590d\u7528\u673a\u5236\uff0c\u5b83\u65e9\u4e8eLinux\u7684\u5185\u6838\u7248\u672c2.0\uff0c\u5df2\u7ecf\u6210\u4e3a\u4e86Unix\u7f51\u7edc\u7f16\u7a0b\u4e2d\u7ecf\u5178\u7684\u591a\u8def\u590d\u7528\u673a\u5236\u3002poll\u662f\u5728Linux\u5185\u68382.1.15\u4e2d\u5f15\u5165\u7684\u4e00\u79cd\u591a\u8def\u590d\u7528\u673a\u5236\uff0c\u5b83\u6bd4select\u66f4\u52a0\u9ad8\u6548\u3002\u800cepoll\u662f\u5728Linux\u5185\u68382.5.44\u4e2d\u5f15\u5165\u7684\u4e00\u79cd\u66f4\u52a0\u9ad8\u6548\u7684\u591a\u8def\u590d\u7528\u673a\u5236\uff0c\u5b83\u662f\u76ee\u524d\u6700\u5e38\u7528\u7684\u591a\u8def\u590d\u7528\u673a\u5236\u4e4b\u4e00\u3002<\/p>\n<h3 class=\"wp-block-heading\">2\u3001\u7cfb\u7edf\u8c03\u7528\u6570\u91cf<\/h3>\n<p>select\u548cpoll\u5728\u4f7f\u7528\u65f6\uff0c\u6bcf\u6b21\u90fd\u9700\u8981\u5c06\u6240\u6709\u5f85\u76d1\u89c6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4ece\u7528\u6237\u7a7a\u95f4\u590d\u5236\u5230\u5185\u6838\u7a7a\u95f4\uff0c\u800cepoll\u4f7f\u7528\u4e86\u4e8b\u4ef6\u9a71\u52a8\u7684\u65b9\u5f0f\uff0c\u5c06\u53ea\u6709\u6d3b\u8dc3\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u52a0\u5165\u5230\u5185\u6838\u4e8b\u4ef6\u8868\u4e2d\u3002\u56e0\u6b64\uff0c\u5728\u5904\u7406\u5927\u91cf\u6587\u4ef6\u63cf\u8ff0\u7b26\u65f6\uff0cepoll\u6bd4select\u548cpoll\u66f4\u5feb\uff0c\u80fd\u591f\u63d0\u4f9b\u66f4\u9ad8\u7684\u5e76\u53d1\u6027\u548c\u66f4\u597d\u7684\u6027\u80fd\u3002<\/p>\n<h3 class=\"wp-block-heading\">3\u3001\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf<\/h3>\n<p>select\u548cpoll\u5728\u5904\u7406\u5927\u91cf\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u65f6\uff0c\u968f\u7740\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\u7684\u589e\u52a0\uff0c\u6027\u80fd\u4f1a\u5448\u73b0\u51fa\u7ebf\u6027\u4e0b\u964d\u7684\u8d8b\u52bf\u3002\u800cepoll\u80fd\u591f\u9ad8\u6548\u5730\u5904\u7406\u5927\u91cf\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5e76\u4e14\u5728\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\u5f88\u5927\u65f6\uff0c\u6027\u80fd\u635f\u5931\u5f88\u5c0f\u3002<\/p>\n<h3 class=\"wp-block-heading\">4\u3001\u6570\u636e\u7ed3\u6784<\/h3>\n<p>select\u548cpoll\u5c06\u6240\u6709\u5f85\u76d1\u89c6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4fdd\u5b58\u5728\u4e00\u4e2a\u6570\u636e\u7ed3\u6784\u4e2d\uff0c\u800cepoll\u5c06\u6587\u4ef6\u63cf\u8ff0\u7b26\u5206\u6563\u5230\u4e0d\u540c\u7684\u4e8b\u4ef6\u96c6\u5408\u4e2d\u3002\u56e0\u6b64\uff0c\u5728\u5904\u7406\u5927\u91cf\u6587\u4ef6\u63cf\u8ff0\u7b26\u65f6\uff0cepoll\u7684\u6548\u7387\u6bd4select\u548cpoll\u66f4\u9ad8\u3002<\/p>\n<h3 class=\"wp-block-heading\">5\u3001\u89e6\u53d1\u6a21\u5f0f<\/h3>\n<p>select\u548cpoll\u662f\u6c34\u5e73\u89e6\u53d1\uff08level-triggered\uff09\u6a21\u5f0f\uff0c\u5373\u5f53\u6587\u4ef6\u63cf\u8ff0\u7b26\u53ef\u8bfb\u53ef\u5199\u65f6\uff0c\u6bcf\u6b21\u8c03\u7528select\u6216poll\u90fd\u4f1a\u901a\u77e5\u5e94\u7528\u7a0b\u5e8f\u3002\u800cepoll\u652f\u6301\u6c34\u5e73\u89e6\u53d1\u548c\u8fb9\u7f18\u89e6\u53d1\uff08edge-triggered\uff09\u4e24\u79cd\u6a21\u5f0f\uff0c\u8fb9\u7f18\u89e6\u53d1\u53ea\u4f1a\u901a\u77e5\u5e94\u7528\u7a0b\u5e8f\u4e00\u6b21\uff0c\u76f4\u5230\u4e0b\u4e00\u6b21\u4e8b\u4ef6\u53d1\u751f\u65f6\u624d\u4f1a\u518d\u6b21\u901a\u77e5\u3002\u8fb9\u7f18\u89e6\u53d1\u6a21\u5f0f\u5728\u5904\u7406\u5927\u91cf\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u65f6\uff0c\u80fd\u591f\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"epoll\u3001poll\u3001select\u7684\u533a\u522b\u662f\uff1a1\u3001\u5185\u6838\u652f\u6301\uff1b2\u3001\u7cfb\u7edf\u8c03\u7528\u6570\u91cf\uff1b3\u3001\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\uff1b4\u3001\u6570\u636e\u7ed3\u6784\uff1b [&hellip;]","protected":false},"author":1,"featured_media":29203,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[384],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/29202"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=29202"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/29202\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/29203"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=29202"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=29202"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=29202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}