{"id":33703,"date":"2023-09-14T17:40:34","date_gmt":"2023-09-14T09:40:34","guid":{"rendered":"\/\/www.dealsbon.com\/?p=33703"},"modified":"2023-09-14T17:40:48","modified_gmt":"2023-09-14T09:40:48","slug":"idlfydylhsx","status":"publish","type":"post","link":"\/\/www.dealsbon.com\/blog\/33703.html","title":{"rendered":"IO\u591a\u8def\u590d\u7528\u7684\u539f\u7406\u548c\u5b9e\u73b0"},"content":{"rendered":"\n

\u3000\u3000\u5728\u8ba1\u7b97\u673a\u7f51\u7edc\u7f16\u7a0b\u4e2d\uff0cIO\u591a\u8def\u590d\u7528\u662f\u4e00\u79cd\u9ad8\u6548\u7684\u6280\u672f\uff0c\u53ef\u4ee5\u4f7f\u5f97\u4e00\u4e2a\u8fdb\u7a0b\u80fd\u591f\u540c\u65f6\u76d1\u542c\u591a\u4e2aIO\u4e8b\u4ef6\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u541e\u5410\u91cf\u548c\u54cd\u5e94\u901f\u5ea6\u3002\u672c\u6587\u5c06\u6df1\u5165\u89e3\u6790IO\u591a\u8def\u590d\u7528\u7684\u539f\u7406\u548c\u5b9e\u73b0\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u8fd9\u4e00\u6280\u672f\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001IO\u591a\u8def\u590d\u7528\u7684\u6982\u5ff5<\/h2>\n\n\n\n

\u3000\u3000IO\u591a\u8def\u590d\u7528\u662f\u4e00\u79cd\u901a\u8fc7\u76d1\u542c\u591a\u4e2aIO\u4e8b\u4ef6\u7684\u673a\u5236\uff0c\u5b9e\u73b0\u5bf9\u591a\u4e2aIO\u64cd\u4f5c\u7684\u5e76\u53d1\u5904\u7406\u3002\u5b83\u53ef\u4ee5\u540c\u65f6\u5904\u7406\u591a\u4e2a\u8fde\u63a5\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u8d44\u6e90\u5229\u7528\u7387\u3002\u5e38\u89c1\u7684IO\u591a\u8def\u590d\u7528\u7684\u65b9\u6cd5\u6709select\u3001poll\u548cepoll\u3002<\/strong><\/p>\n\n\n\n

\u3000\u3000\u4e8c\u3001IO\u591a\u8def\u590d\u7528\u7684\u539f\u7406<\/h2>\n\n\n\n

\u3000\u30001. select\u7684\u539f\u7406<\/h3>\n\n\n\n

\u3000\u3000select\u662f\u4e00\u79cd\u963b\u585eIO\u591a\u8def\u590d\u7528\u65b9\u6cd5\uff0c\u5b83\u901a\u8fc7\u4e00\u4e2a\u4f4d\u56fe\u6765\u7ba1\u7406\u6240\u6709\u8981\u76d1\u542c\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5f53\u6709IO\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0cselect\u4f1a\u8fd4\u56de\u5c31\u7eea\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u8fdb\u7a0b\u53ef\u4ee5\u901a\u8fc7\u904d\u5386\u4f4d\u56fe\u6765\u627e\u5230\u5c31\u7eea\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u8fdb\u884c\u5904\u7406\u3002<\/p>\n\n\n\n

\u3000\u30002. poll\u7684\u539f\u7406<\/h3>\n\n\n\n

\u3000\u3000poll\u662f\u4e00\u79cd\u963b\u585eIO\u591a\u8def\u590d\u7528\u65b9\u6cd5\uff0c\u5b83\u901a\u8fc7\u4e00\u4e2apollfd\u7ed3\u6784\u6570\u7ec4\u6765\u7ba1\u7406\u6240\u6709\u8981\u76d1\u542c\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5f53\u6709IO\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0cpoll\u4f1a\u8fd4\u56de\u5c31\u7eea\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u8fdb\u7a0b\u53ef\u4ee5\u901a\u8fc7\u904d\u5386\u6570\u7ec4\u6765\u627e\u5230\u5c31\u7eea\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u8fdb\u884c\u5904\u7406\u3002<\/p>\n\n\n\n

\u3000\u30003. epoll\u7684\u539f\u7406<\/h3>\n\n\n\n

\u3000\u3000epoll\u662f\u4e00\u79cd\u9ad8\u6548\u7684\u975e\u963b\u585eIO\u591a\u8def\u590d\u7528\u65b9\u6cd5\uff0c\u5b83\u901a\u8fc7\u4e00\u4e2a\u7ea2\u9ed1\u6811\u548c\u4e00\u4e2a\u5c31\u7eea\u94fe\u8868\u6765\u7ba1\u7406\u6240\u6709\u8981\u76d1\u542c\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5f53\u6709IO\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0cepoll\u4f1a\u5c06\u5c31\u7eea\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u52a0\u5165\u5230\u5c31\u7eea\u94fe\u8868\u4e2d\uff0c\u8fdb\u7a0b\u53ef\u4ee5\u901a\u8fc7\u904d\u5386\u5c31\u7eea\u94fe\u8868\u6765\u627e\u5230\u5c31\u7eea\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u8fdb\u884c\u5904\u7406\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e09\u3001IO\u591a\u8def\u590d\u7528\u7684\u5b9e\u73b0<\/h2>\n\n\n\n

\u3000\u30001. select\u7684\u5b9e\u73b0<\/h3>\n\n\n\n

\u3000\u3000select\u7684\u5b9e\u73b0\u76f8\u5bf9\u7b80\u5355\uff0c\u4f7f\u7528FD_SET\u3001FD_CLR\u3001FD_ISSET\u7b49\u5b8f\u6765\u8bbe\u7f6e\u548c\u67e5\u8be2\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u72b6\u6001\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0cselect\u4f7f\u7528\u4f4d\u56fe\u6765\u7ba1\u7406\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002<\/p>\n\n\n\n

\u3000\u30002. poll\u7684\u5b9e\u73b0<\/h3>\n\n\n\n

\u3000\u3000poll\u7684\u5b9e\u73b0\u76f8\u5bf9\u4e8eselect\u66f4\u52a0\u7075\u6d3b\uff0c\u4f7f\u7528pollfd\u7ed3\u6784\u6570\u7ec4\u6765\u7ba1\u7406\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0cpoll\u4f7f\u7528\u94fe\u8868\u6765\u7ba1\u7406\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002<\/p>\n\n\n\n

\u3000\u30003. epoll\u7684\u5b9e\u73b0<\/h3>\n\n\n\n

\u3000\u3000epoll\u7684\u5b9e\u73b0\u76f8\u5bf9\u590d\u6742\uff0c\u4f7f\u7528\u7ea2\u9ed1\u6811\u548c\u5c31\u7eea\u94fe\u8868\u6765\u7ba1\u7406\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0cepoll\u4f7f\u7528epoll_ctl\u548cepoll_wait\u51fd\u6570\u6765\u5b9e\u73b0\u5bf9\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u63a7\u5236\u548c\u7b49\u5f85\u3002<\/p>\n\n\n\n

\u3000\u3000\u56db\u3001IO\u591a\u8def\u590d\u7528\u7684\u4f18\u52bf\u548c\u5e94\u7528\u573a\u666f<\/h2>\n\n\n\n
    \n
  • \u3000\u30001. \u63d0\u9ad8\u7cfb\u7edf\u7684\u5e76\u53d1\u6027\u80fd\uff1aIO\u591a\u8def\u590d\u7528\u53ef\u4ee5\u901a\u8fc7\u540c\u65f6\u76d1\u542c\u591a\u4e2aIO\u4e8b\u4ef6\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u5e76\u53d1\u6027\u80fd\u3002<\/li>\n\n\n\n
  • \u3000\u30002. \u51cf\u5c11\u7cfb\u7edf\u8d44\u6e90\u7684\u5360\u7528\uff1aIO\u591a\u8def\u590d\u7528\u53ef\u4ee5\u51cf\u5c11\u7cfb\u7edf\u8d44\u6e90\u7684\u5360\u7528\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u8d44\u6e90\u5229\u7528\u7387\u3002<\/li>\n\n\n\n
  • \u3000\u30003. \u9002\u7528\u4e8e\u9ad8\u5e76\u53d1\u7684\u7f51\u7edc\u7f16\u7a0b\uff1aIO\u591a\u8def\u590d\u7528\u5728\u9ad8\u5e76\u53d1\u7684\u7f51\u7edc\u7f16\u7a0b\u4e2d\u5e94\u7528\u5e7f\u6cdb\uff0c\u5982\u670d\u52a1\u5668\u7aef\u7684\u5e76\u53d1\u8fde\u63a5\u5904\u7406\u3002<\/li>\n<\/ul>\n\n\n\n

    \u3000\u3000\u4e94\u3001IO\u591a\u8def\u590d\u7528\u7684\u6ce8\u610f\u4e8b\u9879<\/h2>\n\n\n\n
      \n
    • \u3000\u30001. \u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u6253\u5f00\u548c\u5173\u95ed\uff1a\u5728\u4f7f\u7528IO\u591a\u8def\u590d\u7528\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u6b63\u786e\u5730\u6253\u5f00\u548c\u5173\u95ed\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u907f\u514d\u8d44\u6e90\u6cc4\u9732\u548c\u65e0\u6548\u7684\u76d1\u542c\u3002<\/li>\n\n\n\n
    • \u3000\u30002. \u5c31\u7eea\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u5904\u7406\uff1a\u5728\u5904\u7406\u5c31\u7eea\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u53ca\u65f6\u5904\u7406\uff0c\u907f\u514d\u963b\u585e\u5176\u4ed6\u5c31\u7eea\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002<\/li>\n\n\n\n
    • \u3000\u30003. \u7f13\u51b2\u533a\u7684\u7ba1\u7406\uff1a\u5728\u4f7f\u7528IO\u591a\u8def\u590d\u7528\u65f6\uff0c\u9700\u8981\u5408\u7406\u5730\u7ba1\u7406\u7f13\u51b2\u533a\uff0c\u907f\u514d\u6570\u636e\u7684\u4e22\u5931\u548c\u6ea2\u51fa\u3002<\/li>\n<\/ul>\n\n\n\n

      \u3000\u3000\u516d\u3001\u603b\u7ed3<\/h2>\n\n\n\n

      \u3000\u3000IO\u591a\u8def\u590d\u7528\u662f\u4e00\u79cd\u9ad8\u6548\u7684\u6280\u672f\uff0c\u53ef\u4ee5\u540c\u65f6\u76d1\u542c\u591a\u4e2aIO\u4e8b\u4ef6\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u5e76\u53d1\u6027\u80fd\u548c\u8d44\u6e90\u5229\u7528\u7387\u3002\u672c\u6587\u6df1\u5165\u89e3\u6790\u4e86IO\u591a\u8def\u590d\u7528\u7684\u539f\u7406\u548c\u5b9e\u73b0\uff0c\u4ecb\u7ecd\u4e86select\u3001poll\u548cepoll\u7684\u7279\u70b9\u548c\u4f7f\u7528\u65b9\u6cd5\u3002\u5e0c\u671b\u672c\u6587\u80fd\u591f\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528IO\u591a\u8def\u590d\u7528\u6280\u672f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

      IO\u591a\u8def\u590d\u7528\u662f\u4e00\u79cd\u901a\u8fc7\u76d1\u542c\u591a\u4e2aIO\u4e8b\u4ef6\u7684\u673a\u5236\uff0c\u5b9e\u73b0\u5bf9\u591a\u4e2aIO\u64cd\u4f5c\u7684\u5e76\u53d1\u5904\u7406\u3002\u5b83\u53ef\u4ee5\u540c\u65f6\u5904\u7406\u591a\u4e2a\u8fde\u63a5\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u8d44\u6e90\u5229\u7528\u7387\u3002\u5e38\u89c1\u7684IO\u591a\u8def\u590d\u7528\u7684\u65b9\u6cd5\u6709select\u3001poll\u548cepoll\u3002<\/p>\n","protected":false},"author":1,"featured_media":26929,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[222],"class_list":["post-33703","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ycio"],"_links":{"self":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts\/33703"}],"collection":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/comments?post=33703"}],"version-history":[{"count":0,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts\/33703\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/media\/26929"}],"wp:attachment":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/media?parent=33703"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/categories?post=33703"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/tags?post=33703"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}