{"id":206598,"date":"2025-06-12T09:24:27","date_gmt":"2025-06-12T01:24:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206598\/"},"modified":"2025-06-12T09:24:27","modified_gmt":"2025-06-12T01:24:27","slug":"go-%e4%b8%ad%e5%a6%82%e4%bd%95%e5%bb%b6%e8%bf%9f%e6%89%a7%e8%a1%8c%e5%8f%96%e6%b6%88%e4%ba%8b%e4%bb%b6%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206598\/","title":{"rendered":"Go \u4e2d\u5982\u4f55\u5ef6\u8fdf\u6267\u884c\u53d6\u6d88\u4e8b\u4ef6\uff1f"},"content":{"rendered":"

\u5b66\u4e60
\nGOLANG<\/span>\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0
\n\u300aGo \u4e2d\u5982\u4f55\u5ef6\u8fdf\u6267\u884c\u53d6\u6d88\u4e8b\u4ef6\uff1f\u300b<\/span>\u5c06\u4f1a\u4ecb\u7ecd\u5230
\n<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60
\nGOLANG<\/span>\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01,
\n,
\n\u5728 go \u7684 select \u4e2d\u5ef6\u8fdf\u6267\u884c\u53d6\u6d88\u4e8b\u4ef6<\/strong>,\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u5728\u63a5\u6536\u5230\u53d6\u6d88\u4fe1\u53f7\uff08\u4f8b\u5982\u901a\u8fc7 context \u4f20\u9012\u7684 ctx.done()\uff09\u540e\u4ecd\u7ee7\u7eed\u6267\u884c\u90e8\u5206\u4ee3\u7801\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u5982\u4f55\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\uff0c\u800c\u4e0d\u4f1a\u76f4\u63a5\u5728 ctx.done() \u5185\u90e8\u6267\u884c\u4ee3\u7801\u3002,\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 select \u6765\u5904\u7406\u6765\u81ea\u591a\u4e2a\u901a\u9053\u7684\u4e8b\u4ef6\u3002\u9664\u4e86 ctx.done() \u901a\u9053\u5916\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u8ba1\u65f6\u5668\u901a\u9053\uff0c\u4f8b\u5982 ticker.c\u3002,
\n\u5b9e\u73b0\u5ef6\u8fdf\u6267\u884c\u53d6\u6d88\u4e8b\u4ef6<\/strong>,\u5728 select \u8bed\u53e5\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u68c0\u67e5 ctx.done() \u901a\u9053\uff0c\u5982\u679c\u6536\u5230\u53d6\u6d88\u4fe1\u53f7\uff0c\u6211\u4eec\u5c06\u8bbe\u7f6e shouldreturn \u6807\u5fd7\u4e3a true\u3002,\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528 fallthrough \u8bed\u53e5\u7ee7\u7eed\u6267\u884c select \u7684\u4e0b\u4e00\u9879\uff08\u5373 ticker.c \u901a\u9053\uff09\u3002\u8fd9\u6837\u4fbf\u5141\u8bb8\u6211\u4eec\u5728\u6536\u5230\u53d6\u6d88\u4fe1\u53f7\u540e\u6267\u884c\u4e00\u6b21 ticker.c \u4e2d\u7684\u4ee3\u7801\u3002,\u5982\u679c\u5728\u6267\u884c ticker.c \u4e2d\u7684\u4ee3\u7801\u65f6 shouldreturn \u6807\u5fd7\u4e3a true\uff0c\u5219\u6211\u4eec\u5c06\u8fd4\u56de\u3002\u8fd9\u786e\u4fdd\u4e86\u5728\u63a5\u6536\u5230\u53d6\u6d88\u4fe1\u53f7\u540e\uff0c\u6211\u4eec\u4e0d\u4f1a\u7ee7\u7eed\u6267\u884c\u4efb\u4f55\u5176\u4ed6\u4ee3\u7801\u3002,\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301GOLANG\uff01\u66f4\u591a\u5173\u4e8eGOLANG\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u3002,\u5728 go \u7684 select \u4e2d\u5ef6\u8fdf\u6267\u884c\u53d6\u6d88\u4e8b\u4ef6,\u5b66\u4e60
\nGOLANG<\/span>\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0
\n\u300aGo \u4e2d\u5982\u4f55\u5ef6\u8fdf\u6267\u884c\u53d6\u6d88\u4e8b\u4ef6\uff1f\u300b<\/span>\u5c06\u4f1a\u4ecb\u7ecd\u5230
\n<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60
\nGOLANG<\/span>\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> Go \u4e2d\u5982\u4f55\u5ef6\u8fdf\u6267\u884c\u53d6\u6d88\u4e8b\u4ef6\uff1f<\/span><\/p>\n

Go \u4e2d\u5982\u4f55\u5ef6\u8fdf\u6267\u884c\u53d6\u6d88\u4e8b\u4ef6\uff1f<\/h1>\n

2024-11-16 17:55:10<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5b66\u4e60GOLANG<\/span>\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0\u300aGo \u4e2d\u5982\u4f55\u5ef6\u8fdf\u6267\u884c\u53d6\u6d88\u4e8b\u4ef6\uff1f\u300b<\/span>\u5c06\u4f1a\u4ecb\u7ecd\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60GOLANG<\/span>\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

<\/p>\n

\u5728 go \u7684 select \u4e2d\u5ef6\u8fdf\u6267\u884c\u53d6\u6d88\u4e8b\u4ef6<\/strong><\/p>\n

\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u5728\u63a5\u6536\u5230\u53d6\u6d88\u4fe1\u53f7\uff08\u4f8b\u5982\u901a\u8fc7 context \u4f20\u9012\u7684 ctx.done()\uff09\u540e\u4ecd\u7ee7\u7eed\u6267\u884c\u90e8\u5206\u4ee3\u7801\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u5982\u4f55\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\uff0c\u800c\u4e0d\u4f1a\u76f4\u63a5\u5728 ctx.done() \u5185\u90e8\u6267\u884c\u4ee3\u7801\u3002<\/p>\n

\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 select \u6765\u5904\u7406\u6765\u81ea\u591a\u4e2a\u901a\u9053\u7684\u4e8b\u4ef6\u3002\u9664\u4e86 ctx.done() \u901a\u9053\u5916\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u8ba1\u65f6\u5668\u901a\u9053\uff0c\u4f8b\u5982 ticker.c\u3002<\/p>\n

\u5b9e\u73b0\u5ef6\u8fdf\u6267\u884c\u53d6\u6d88\u4e8b\u4ef6<\/strong><\/p>\n

select {\ncase <-ctx.Done():\n  \/\/ \u8bbe\u7f6e\u4e00\u4e2a\u6807\u5fd7\uff0c\u8868\u793a\u5e94\u8be5\u8fd4\u56de\n  shouldReturn = true\n  \/\/ fallthrough\u7528\u4e8e\u7ee7\u7eed\u6267\u884c\u4e0b\u4e00case\n  fallthrough\ncase <-ticker.C:\n  \/\/ \u6267\u884c\u4ee3\u7801...\n  if shouldReturn {\n    return\n  }\n}<\/pre>\n
\u5728 select \u8bed\u53e5\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u68c0\u67e5 ctx.done() \u901a\u9053\uff0c\u5982\u679c\u6536\u5230\u53d6\u6d88\u4fe1\u53f7\uff0c\u6211\u4eec\u5c06\u8bbe\u7f6e shouldreturn \u6807\u5fd7\u4e3a true\u3002<\/p>\n
\u7136\u540e\uff0c\u6211\u4eec\u4f7f\u7528 fallthrough \u8bed\u53e5\u7ee7\u7eed\u6267\u884c select \u7684\u4e0b\u4e00\u9879\uff08\u5373 ticker.c \u901a\u9053\uff09\u3002\u8fd9\u6837\u4fbf\u5141\u8bb8\u6211\u4eec\u5728\u6536\u5230\u53d6\u6d88\u4fe1\u53f7\u540e\u6267\u884c\u4e00\u6b21 ticker.c \u4e2d\u7684\u4ee3\u7801\u3002<\/p>\n
\u5982\u679c\u5728\u6267\u884c ticker.c \u4e2d\u7684\u4ee3\u7801\u65f6 shouldreturn \u6807\u5fd7\u4e3a true\uff0c\u5219\u6211\u4eec\u5c06\u8fd4\u56de\u3002\u8fd9\u786e\u4fdd\u4e86\u5728\u63a5\u6536\u5230\u53d6\u6d88\u4fe1\u53f7\u540e\uff0c\u6211\u4eec\u4e0d\u4f1a\u7ee7\u7eed\u6267\u884c\u4efb\u4f55\u5176\u4ed6\u4ee3\u7801\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301GOLANG\uff01\u66f4\u591a\u5173\u4e8eGOLANG\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u3002<\/p>\n
\n
\n <\/dt>\n
\n   \u89e3\u5bc6\u7535\u8111\u97f3\u54cd\u5931\u7075\u539f\u56e0\u53ca\u6392\u9664\u65b9\u6cd5\n <\/dd>\n<\/dl>\n
\n
\n <\/dt>\n
\n   \u5b50\u7ec4\u4ef6\u5185\u5bb9\u8d85\u51fa\u5bb9\u5668\u65f6\u5982\u4f55\u5b9e\u73b0\u6eda\u52a8\u5c55\u793a\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u5b66\u4e60 GOLANG\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-206598","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206598","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=206598"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206598\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206598"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206598"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}