{"id":37606,"date":"2023-09-21T17:15:17","date_gmt":"2023-09-21T09:15:17","guid":{"rendered":"\/\/www.viralrail.com\/?p=37606"},"modified":"2023-09-21T17:15:21","modified_gmt":"2023-09-21T09:15:21","slug":"idlfyhzszygim","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/37606.html","title":{"rendered":"IO\u591a\u8def\u590d\u7528\u4f1a\u963b\u585e\u5728\u4e00\u4e2aIO\u5417\uff1f"},"content":{"rendered":"\n

\u3000\u3000\u5728\u8ba1\u7b97\u673a\u9886\u57df\u4e2d\uff0cI\/O(Input\/Output)\u64cd\u4f5c\u662f\u6307\u8ba1\u7b97\u673a\u4e0e\u5916\u90e8\u8bbe\u5907\u4e4b\u95f4\u7684\u6570\u636e\u4ea4\u6362\u3002\u5728\u8fdb\u884cI\/O\u64cd\u4f5c\u65f6\uff0c\u5e38\u5e38\u4f1a\u9047\u5230\u963b\u585e\u7684\u95ee\u9898\uff0c\u5373\u4e00\u4e2aI\/O\u64cd\u4f5c\u4f1a\u963b\u585e\u6574\u4e2a\u7a0b\u5e8f\u7684\u6267\u884c\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u51fa\u73b0\u4e86IO\u591a\u8def\u590d\u7528\u6280\u672f\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8IO\u591a\u8def\u590d\u7528\u7684\u5de5\u4f5c\u539f\u7406\u4ee5\u53ca\u5b83\u662f\u5982\u4f55\u89e3\u51b3\u963b\u585e\u95ee\u9898\u7684\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\u540c\u65f6\u76d1\u63a7\u591a\u4e2aI\/O\u4e8b\u4ef6\u7684\u673a\u5236\uff0c\u5b83\u80fd\u591f\u8ba9\u4e00\u4e2a\u8fdb\u7a0b\u53ef\u4ee5\u540c\u65f6\u76d1\u63a7\u591a\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u53ef\u8bfb\u3001\u53ef\u5199\u548c\u5f02\u5e38\u7b49\u4e8b\u4ef6\u3002\u901a\u8fc7IO\u591a\u8def\u590d\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u540c\u65f6\u5904\u7406\u591a\u4e2aI\/O\u64cd\u4f5c\uff0c<\/strong>\u800c\u4e0d\u9700\u8981\u4e3a\u6bcf\u4e2aI\/O\u64cd\u4f5c\u521b\u5efa\u4e00\u4e2a\u72ec\u7acb\u7684\u7ebf\u7a0b\u6216\u8fdb\u7a0b\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e8c\u3001IO\u591a\u8def\u590d\u7528\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n\n\n\n
\u3000\u3000IO\u591a\u8def\u590d\u7528\u7684\u5de5\u4f5c\u539f\u7406\u53ef\u4ee5\u7b80\u5355\u6982\u62ec\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n\n\n\n

\n
\u3000\u30001. \u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u76d1\u63a7I\/O\u4e8b\u4ef6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u96c6\u5408\u3002<\/li>\n\n\n\n

\u3000\u30002. \u5c06\u9700\u8981\u76d1\u63a7\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u6dfb\u52a0\u5230\u6587\u4ef6\u63cf\u8ff0\u7b26\u96c6\u5408\u4e2d\u3002<\/li>\n\n\n\n

\u3000\u30003. \u8c03\u7528select\u3001poll\u6216epoll\u7b49\u7cfb\u7edf\u8c03\u7528\uff0c\u7b49\u5f85I\/O\u4e8b\u4ef6\u7684\u53d1\u751f\u3002<\/li>\n\n\n\n

\u3000\u30004. \u5f53\u6709I\/O\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0c\u7cfb\u7edf\u8c03\u7528\u8fd4\u56de\uff0c\u5e76\u5c06\u53d1\u751f\u4e8b\u4ef6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4ece\u96c6\u5408\u4e2d\u63d0\u53d6\u51fa\u6765\u3002<\/li>\n\n\n\n

\u3000\u30005. \u5904\u7406\u53d1\u751f\u4e8b\u4ef6\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u8fdb\u884c\u76f8\u5e94\u7684\u8bfb\u5199\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n
\u3000\u3000\u4e09\u3001IO\u591a\u8def\u590d\u7528\u7684\u4f18\u70b9<\/h2>\n\n\n\n
\n
\u3000\u30001. \u8282\u7701\u7cfb\u7edf\u8d44\u6e90\uff1a\u4f7f\u7528IO\u591a\u8def\u590d\u7528\uff0c\u53ef\u4ee5\u907f\u514d\u4e3a\u6bcf\u4e2aI\/O\u64cd\u4f5c\u521b\u5efa\u72ec\u7acb\u7684\u7ebf\u7a0b\u6216\u8fdb\u7a0b\uff0c\u4ece\u800c\u8282\u7701\u4e86\u7cfb\u7edf\u8d44\u6e90\u3002<\/li>\n\n\n\n

\u3000\u30002. \u63d0\u9ad8\u6027\u80fd\uff1aIO\u591a\u8def\u590d\u7528\u53ef\u4ee5\u5728\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u540c\u65f6\u5904\u7406\u591a\u4e2aI\/O\u64cd\u4f5c\uff0c\u907f\u514d\u4e86\u7ebf\u7a0b\u5207\u6362\u7684\u5f00\u9500\uff0c\u63d0\u9ad8\u4e86\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/li>\n\n\n\n

\u3000\u30003. \u7b80\u5316\u7a0b\u5e8f\u8bbe\u8ba1\uff1a\u4f7f\u7528IO\u591a\u8def\u590d\u7528\uff0c\u53ef\u4ee5\u5c06\u590d\u6742\u7684\u591a\u7ebf\u7a0b\u6216\u591a\u8fdb\u7a0b\u7684\u7a0b\u5e8f\u7b80\u5316\u4e3a\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u51cf\u5c11\u4e86\u7a0b\u5e8f\u8bbe\u8ba1\u7684\u590d\u6742\u6027\u3002<\/li>\n<\/ul>\n\n\n\n
\u3000\u3000\u56db\u3001IO\u591a\u8def\u590d\u7528\u7684\u5c40\u9650\u6027<\/h2>\n\n\n\n
\u3000\u3000\u867d\u7136IO\u591a\u8def\u590d\u7528\u6709\u5f88\u591a\u4f18\u70b9\uff0c\u4f46\u662f\u5b83\u4e5f\u5b58\u5728\u4e00\u4e9b\u5c40\u9650\u6027\uff1a<\/p>\n\n\n\n

\n
\u3000\u30001. \u53ef\u79fb\u690d\u6027\u5dee\uff1a\u4e0d\u540c\u7684\u64cd\u4f5c\u7cfb\u7edf\u5bf9IO\u591a\u8def\u590d\u7528\u7684\u652f\u6301\u7a0b\u5ea6\u4e0d\u540c\uff0c\u56e0\u6b64\u5728\u7f16\u5199\u8de8\u5e73\u53f0\u7684\u7a0b\u5e8f\u65f6\u9700\u8981\u6ce8\u610f\u3002<\/li>\n\n\n\n

\u3000\u30002. \u9700\u8981\u91cd\u65b0\u5b66\u4e60\uff1a\u76f8\u6bd4\u4e8e\u4f20\u7edf\u7684\u963b\u585e\u5f0fIO\u6216\u975e\u963b\u585e\u5f0fIO\uff0cIO\u591a\u8def\u590d\u7528\u9700\u8981\u91cd\u65b0\u5b66\u4e60\u548c\u7406\u89e3\u5176\u5de5\u4f5c\u539f\u7406\u548c\u4f7f\u7528\u65b9\u6cd5\u3002<\/li>\n\n\n\n

\u3000\u30003. \u5bf9\u4e8e\u5927\u89c4\u6a21\u7684\u8fde\u63a5\u5904\u7406\u652f\u6301\u4e0d\u8db3\uff1a\u5f53\u9700\u8981\u5904\u7406\u5927\u89c4\u6a21\u7684\u8fde\u63a5\u65f6\uff0cIO\u591a\u8def\u590d\u7528\u7684\u6548\u7387\u53ef\u80fd\u4f1a\u4e0b\u964d\u3002<\/li>\n<\/ul>\n\n\n\n
\u3000\u3000\u4e94\u3001IO\u591a\u8def\u590d\u7528\u4f1a\u963b\u585e\u5728\u4e00\u4e2aIO\u5417?<\/h2>\n\n\n\n
\u3000\u3000\u7b54\u6848\u662f\u4e0d\u4f1a\u3002IO\u591a\u8def\u590d\u7528\u53ef\u4ee5\u540c\u65f6\u76d1\u63a7\u591a\u4e2aI\/O\u4e8b\u4ef6\uff0c\u5e76\u5728\u6709\u4e8b\u4ef6\u53d1\u751f\u65f6\u7acb\u5373\u8fd4\u56de\uff0c\u56e0\u6b64\u4e0d\u4f1a\u963b\u585e\u5728\u4e00\u4e2aI\/O\u64cd\u4f5c\u4e0a\u3002\u901a\u8fc7\u5408\u7406\u5730\u4f7f\u7528IO\u591a\u8def\u590d\u7528\uff0c\u53ef\u4ee5\u5145\u5206\u5229\u7528\u7cfb\u7edf\u8d44\u6e90\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/p>\n\n\n\n
\u3000\u3000\u7ed3\u8bba\uff1a<\/h2>\n\n\n\n
\u3000\u3000IO\u591a\u8def\u590d\u7528\u662f\u4e00\u79cd\u89e3\u51b3\u963b\u585e\u95ee\u9898\u7684\u5229\u5668\u3002\u901a\u8fc7\u4f7f\u7528IO\u591a\u8def\u590d\u7528\uff0c\u53ef\u4ee5\u5728\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u540c\u65f6\u5904\u7406\u591a\u4e2aI\/O\u64cd\u4f5c\uff0c\u4ece\u800c\u8282\u7701\u7cfb\u7edf\u8d44\u6e90\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/strong>\u867d\u7136IO\u591a\u8def\u590d\u7528\u5728\u67d0\u4e9b\u65b9\u9762\u5b58\u5728\u4e00\u4e9b\u5c40\u9650\u6027\uff0c\u4f46\u662f\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u5b83\u90fd\u662f\u4e00\u79cd\u9ad8\u6548\u3001\u53ef\u9760\u7684\u89e3\u51b3\u65b9\u6848\u3002\u5bf9\u4e8e\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u638c\u63e1IO\u591a\u8def\u590d\u7528\u6280\u672f\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u5b83\u5c06\u5927\u5927\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6548\u7387\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728\u8ba1\u7b97\u673a\u9886\u57df\u4e2d\uff0cI\/O(Input\/Output)\u64cd\u4f5c\u662f\u6307\u8ba1\u7b97\u673a\u4e0e\u5916\u90e8\u8bbe\u5907\u4e4b\u95f4\u7684\u6570\u636e\u4ea4\u6362\u3002\u5728\u8fdb\u884cI\/O\u64cd\u4f5c\u65f6\uff0c\u5e38\u5e38\u4f1a\u9047\u5230\u963b\u585e\u7684\u95ee\u9898\uff0c\u5373\u4e00\u4e2aI\/O\u64cd\u4f5c\u4f1a\u963b\u585e\u6574\u4e2a\u7a0b\u5e8f\u7684\u6267\u884c\u3002<\/p>\n","protected":false},"author":1,"featured_media":26938,"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-37606","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ycio"],"_links":{"self":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/37606"}],"collection":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/comments?post=37606"}],"version-history":[{"count":0,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/37606\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media\/26938"}],"wp:attachment":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media?parent=37606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/categories?post=37606"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/tags?post=37606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

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