{"id":285326,"date":"2023-10-16T20:18:26","date_gmt":"2023-10-16T12:18:26","guid":{"rendered":"https:\/\/lrxjmw.cn\/lhsxj.html"},"modified":"2023-10-16T20:18:26","modified_gmt":"2023-10-16T12:18:26","slug":"lhsxj","status":"publish","type":"post","link":"https:\/\/lrxjmw.cn\/lhsxj.html","title":{"rendered":"Linux select\u51fd\u6570\u8be6\u89e3"},"content":{"rendered":"

\u8fd9\u7bc7\u6587\u7ae0\u5c06\u4e3a\u5927\u5bb6\u8be6\u7ec6\u4ecb\u7ecdLinux<\/a>\u4e2d\u7684select\u51fd\u6570\uff0c\u5e2e\u52a9\u5927\u5bb6\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u8be5\u51fd\u6570\u3002\u901a\u8fc7\u672c\u6587\u7684\u5b66\u4e60\uff0c\u4f60\u5c06\u4f1a\u638c\u63e1select\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5\u3001\u5b9e\u73b0\u539f\u7406\u4ee5\u53ca\u4e00\u4e9b\u5e38\u89c1\u7684\u5e94\u7528\u573a\u666f\u3002<\/p>\n

1. select\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5<\/b><\/p>\n

\u5728\u5f00\u59cb\u4ecb\u7ecdselect\u51fd\u6570\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u6765\u4e86\u89e3\u4e00\u4e0b\u5b83\u7684\u57fa\u672c\u7528\u6cd5\u3002select\u51fd\u6570\u662f\u4e00\u4e2a\u591a\u8def\u590d\u7528\u7684IO\u51fd\u6570\uff0c\u53ef\u4ee5\u76d1\u542c\u591a\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e0a\u662f\u5426\u6709IO\u4e8b\u4ef6\u53d1\u751f\u3002\u901a\u8fc7\u8be5\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u540c\u65f6\u76d1\u542c\u591a\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5e76\u5728\u5176\u4e2d\u4efb\u610f\u4e00\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e0a\u6709IO\u4e8b\u4ef6\u53d1\u751f\u65f6\u8fdb\u884c\u76f8\u5e94\u7684\u5904\u7406\u3002<\/p>\n

2. select\u51fd\u6570\u7684\u5b9e\u73b0\u539f\u7406<\/b><\/p>\n

\u4e86\u89e3\u4e00\u4e2a\u51fd\u6570\u7684\u5b9e\u73b0\u539f\u7406\u5bf9\u4e8e\u6211\u4eec\u6b63\u786e\u4f7f\u7528\u548c\u7406\u89e3\u8be5\u51fd\u6570\u975e\u5e38\u91cd\u8981\u3002select\u51fd\u6570\u901a\u8fc7\u8f6e\u8be2\u65b9\u5f0f\u6765\u68c0\u67e5\u6240\u6709\u88ab\u76d1\u542c\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5f53\u6709IO\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0c\u4f1a\u901a\u77e5\u76f8\u5e94\u7684\u8fdb\u7a0b\u8fdb\u884c\u5904\u7406\u3002\u8fd9\u79cd\u673a\u5236\u662f\u57fa\u4e8e\u64cd\u4f5c\u7cfb\u7edf<\/a>\u5185\u6838\u7684\u4e8b\u4ef6\u9a71\u52a8\u6a21\u578b\u5b9e\u73b0\u7684\u3002<\/p>\n

3. select\u51fd\u6570\u5728\u7f51\u7edc\u7f16\u7a0b\u4e2d\u7684\u5e94\u7528<\/b><\/p>\n

linux select\u51fd\u6570\u8be6\u89e3_linux select\u51fd\u6570\u8be6\u89e3_linux select\u51fd\u6570\u8be6\u89e3<\/p>\n

\u5728\u7f51\u7edc\u7f16\u7a0b\u4e2dlinux select\u51fd\u6570\u8be6\u89e3<\/strong>\uff0cselect\u51fd\u6570\u662f\u975e\u5e38\u5e38\u7528\u7684\u4e00\u4e2a\u51fd\u6570\u3002\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u540c\u65f6\u76d1\u542c\u591a\u4e2a\u7f51\u7edc\u8fde\u63a5\uff0c\u5e76\u5728\u5176\u4e2d\u4efb\u610f\u4e00\u4e2a\u8fde\u63a5\u4e0a\u6709\u6570\u636e\u53ef\u8bfb\u6216\u53ef\u5199\u65f6\u8fdb\u884c\u76f8\u5e94\u64cd\u4f5c\u3002\u8fd9\u5728\u5b9e\u73b0\u9ad8\u5e76\u53d1\u670d\u52a1\u5668\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n

4. select\u51fd\u6570\u5728\u5e76\u53d1\u7f16\u7a0b\u4e2d\u7684\u5e94\u7528<\/b><\/p>\n

\u9664\u4e86\u7f51\u7edc\u7f16\u7a0b\uff0cselect\u51fd\u6570\u8fd8\u53ef\u4ee5\u5728\u5e76\u53d1\u7f16\u7a0b\u4e2d\u53d1\u6325\u91cd\u8981\u4f5c\u7528\u3002\u901a\u8fc7select\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u76d1\u542c\u591a\u4e2a\u5b50\u8fdb\u7a0b\u6216\u7ebf\u7a0b\u7684\u72b6\u6001suse linux \u4e0b\u8f7dlinux \u865a\u62df\u4e3b\u673a\uff0c\u5f53\u5176\u4e2d\u4e00\u4e2a\u5b50\u8fdb\u7a0b\u6216\u7ebf\u7a0b\u7ed3\u675f\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u53ca\u65f6\u8fdb\u884c\u76f8\u5e94\u7684\u5904\u7406\u3002\u8fd9\u5728\u5b9e\u73b0\u5e76\u53d1\u63a7\u5236\u548c\u8d44\u6e90\u7ba1\u7406\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n

5. select\u51fd\u6570\u7684\u4f18\u7f3a\u70b9<\/b><\/p>\n

\u867d\u7136select\u51fd\u6570\u5728\u5f88\u591a\u573a\u666f\u4e0b\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5b83\u4e5f\u5b58\u5728\u4e00\u4e9b\u4e0d\u8db3\u4e4b\u5904\u3002\u6bd4\u5982\uff0c\u5728\u5927\u91cf\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e2d\u9009\u62e9\u65f6\uff0cselect\u51fd\u6570\u7684\u6027\u80fd\u53ef\u80fd\u4f1a\u53d7\u5230\u5f71\u54cd\u3002\u6b64\u5916linux select\u51fd\u6570\u8be6\u89e3<\/strong>\uff0cselect\u51fd\u6570\u5728\u67d0\u4e9b\u64cd\u4f5c\u7cfb\u7edf\u4e0a\u7684\u5b9e\u73b0\u53ef\u80fd\u5b58\u5728\u4e00\u4e9b\u9650\u5236\u3002<\/p>\n

6. select\u51fd\u6570\u7684\u66ff\u4ee3\u65b9\u6848<\/b><\/p>\n

\u9488\u5bf9select\u51fd\u6570\u5b58\u5728\u7684\u4e00\u4e9b\u4e0d\u8db3\u4e4b\u5904\uff0c\u6211\u4eec\u53ef\u4ee5\u9009\u62e9\u4f7f\u7528\u5176\u4ed6\u66f4\u9ad8\u6548\u7684\u66ff\u4ee3\u65b9\u6848\u3002\u6bd4\u5982epoll\u3001kqueue\u7b49\u65b0\u4e00\u4ee3IO\u590d\u7528\u673a\u5236\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n

7. select\u51fd\u6570\u7684\u6ce8\u610f\u4e8b\u9879<\/b><\/p>\n

\u5728\u4f7f\u7528select\u51fd\u6570\u65f6\uff0c\u6211\u4eec\u9700\u8981\u6ce8\u610f\u4e00\u4e9b\u7ec6\u8282\u95ee\u9898\u3002\u6bd4\u5982\uff0c\u5728\u6bcf\u6b21\u8c03\u7528select\u51fd\u6570\u524d\u9700\u8981\u91cd\u65b0\u8bbe\u7f6e\u6587\u4ef6\u63cf\u8ff0\u7b26\u96c6\u5408\uff0c\u5728\u5904\u7406\u5b8cIO\u4e8b\u4ef6\u540e\u9700\u8981\u91cd\u65b0\u68c0\u67e5\u6240\u6709\u6587\u4ef6\u63cf\u8ff0\u7b26\u7b49\u3002<\/p>\n

8. select\u51fd\u6570\u7684\u5b9e\u9645\u5e94\u7528\u6848\u4f8b<\/b><\/p>\n

\u6700\u540e\uff0c\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u5177\u4f53\u7684\u5e94\u7528\u6848\u4f8b\uff0c\u4ee5\u5e2e\u52a9\u5927\u5bb6\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528select\u51fd\u6570\u3002\u6211\u4eec\u5c06\u4ee5\u4e00\u4e2a\u7b80\u5355\u7684\u804a\u5929\u5ba4\u7a0b\u5e8f\u4e3a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u4f7f\u7528select\u51fd\u6570\u5b9e\u73b0\u591a\u7528\u6237\u804a\u5929\u529f\u80fd\u3002<\/p>\n

\u901a\u8fc7\u672c\u6587\u7684\u5b66\u4e60\uff0c\u76f8\u4fe1\u5927\u5bb6\u5bf9\u4e8eselect\u51fd\u6570\u6709\u4e86\u66f4\u6df1\u5165\u7684\u7406\u89e3\u548c\u638c\u63e1\u3002\u65e0\u8bba\u662f\u5728\u7f51\u7edc\u7f16\u7a0b\u8fd8\u662f\u5e76\u53d1\u7f16\u7a0b\u4e2d\uff0cselect\u51fd\u6570\u90fd\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u5de5\u5177\uff0c\u5e0c\u671b\u5927\u5bb6\u80fd\u591f\u5584\u52a0\u5229\u7528\u3002\u8ba9\u6211\u4eec\u4e00\u8d77\u4eab\u53d7Linux\u7f16\u7a0b\u7684\u4e50\u8da3\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

select\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5select\u51fd\u6570\u7684\u5b9e\u73b0\u539f\u7406select\u51fd\u6570\u5728\u7f51\u7edc\u7f16\u7a0b\u4e2d\u7684\u5e94\u7528\u5728\u7f51\u7edc\u7f16\u7a0b\u4e2d\uff0cselect\u51fd\u6570\u662f\u975e\u5e38\u5e38\u7528\u7684\u4e00\u4e2a\u51fd\u6570\u3002select\u51fd\u6570\u5728\u5e76\u53d1\u7f16\u7a0b\u4e2d\u7684\u5e94\u7528select\u51fd\u6570\u7684\u4f18\u7f3a\u70b9select\u51fd\u6570\u7684\u66ff\u4ee3\u65b9\u6848select\u51fd\u6570\u7684\u6ce8\u610f\u4e8b\u9879select\u51fd\u6570\u7684\u5b9e\u9645\u5e94\u7528\u6848\u4f8b<\/p>\n","protected":false},"author":1,"featured_media":285327,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[988],"tags":[999],"class_list":["post-285326","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tougao","tag-999"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/285326","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=285326"}],"version-history":[{"count":0,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/285326\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/285327"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=285326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=285326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=285326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}