{"id":208182,"date":"2025-07-08T17:59:01","date_gmt":"2025-07-08T09:59:01","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208182\/"},"modified":"2025-07-08T17:59:01","modified_gmt":"2025-07-08T09:59:01","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8%e4%b8%bb%e5%8a%a8%e4%bb%8e%e9%80%9a%e9%81%93%e8%af%bb%e5%8f%96%e6%95%b0%e6%8d%ae%e7%9a%84%e5%90%8c%e6%97%b6%e6%a3%80%e6%9f%a5-goroutine-%e6%98%af%e5%90%a6%e5%ae%8c%e6%88%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208182\/","title":{"rendered":"\u5982\u4f55\u5728\u4e3b\u52a8\u4ece\u901a\u9053\u8bfb\u53d6\u6570\u636e\u7684\u540c\u65f6\u68c0\u67e5 goroutine \u662f\u5426\u5b8c\u6210\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u5728\u4e3b\u52a8\u4ece\u901a\u9053\u8bfb\u53d6\u6570\u636e\u7684\u540c\u65f6\u68c0\u67e5 goroutine \u662f\u5426\u5b8c\u6210\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-29 23:15:34<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u73cd\u60dc\u65f6\u95f4\uff0c\u52e4\u594b\u5b66\u4e60\uff01\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u5982\u4f55\u5728\u4e3b\u52a8\u4ece\u901a\u9053\u8bfb\u53d6\u6570\u636e\u7684\u540c\u65f6\u68c0\u67e5 goroutine \u662f\u5426\u5b8c\u6210\uff1f\u300b<\/span>\uff0c\u6b63\u6587\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60Golang<\/span>\uff0c\u6216\u8005\u662f\u5bf9Golang<\/span>\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u6211\uff01\u540e\u9762\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u5185\u5bb9\u7684\uff0c\u5e0c\u671b\u90fd\u80fd\u5e2e\u5230\u6b63\u5728\u5b66\u4e60\u7684\u5927\u5bb6\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u5f88\u96be\u7528\u4e00\u53e5\u8bdd\u6765\u8868\u8fbe\u8fd9\u4e2a\u95ee\u9898\u3002\u60c5\u51b5\u5982\u4e0b\uff1a<\/p>\n

\u6211\u6b63\u5728\u5c1d\u8bd5\u751f\u6210\u4e00\u7ec4 goroutine \u6765\u9012\u5f52\u76ee\u5f55\u5e76\u67e5\u627e\u5339\u914d\u7684\u6587\u4ef6\u3002\u7136\u540e\u6211\u6536\u96c6\u8fd9\u4e9b\u6587\u4ef6\u5e76\u7ee7\u7eed\u5904\u7406\u5b83\u4eec\u3002\u7136\u800c\uff0c\u95ee\u9898\u662f\u6211\u4e0d\u77e5\u9053\u6bcf\u4e2a\u4f8b\u7a0b\u4f1a\u627e\u5230\u591a\u5c11\u4e2a\u6587\u4ef6\uff0c\u6240\u4ee5\u6211\u5f88\u96be\u5f04\u6e05\u695a\u5982\u4f55\u5728\u6240\u6709\u4f8b\u7a0b\u5b8c\u6210\u540e\u8ba9\u4e3b\u7ebf\u7a0b\u9000\u51fa<\/p>\n

\u6211\u53ef\u4ee5\u8ba9\u901a\u9053\u7f13\u51b2\u533a\u53d8\u5f97\u975e\u5e38\u5927\uff0c\u4f46\u8fd9\u4e0d\u662f\u4e00\u4e2a\u597d\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u8fd9\u4e2a\u5de5\u5177\u4e0d\u9700\u8981 100% \u5065\u58ee\uff0c\u4f46\u8db3\u591f\u597d\uff0c\u4e0d\u4f1a\u4e00\u76f4\u635f\u574f\u3002\u53e6\u5916\uff0c\u5b83\u6709\u53ef\u80fd\u4f1a\u51fa\u73b0\u5f88\u591a\u6587\u4ef6<\/p>\n

\/\/ start a routine to traverse each directory\nfpchan := make(chan string, 100)\nfor _, dir := range numdirs {\n    fmt.printf(\"searching for file in %s\\n\", dir)\n    go findlogs(searchstring, dir, fpchan)\n}\n\n\/\/ collect filepaths from channel\nfiles := make([]string, 0, maxlogs)\nfor file := range fpchan { \/\/ i'll get stuck when everything completes, nothing to receive\n    if len(files) <= cap(files) {\n        files.append(file)\n    } else {\n        fmt.println(\"reached max logfile count of %d\\n\", maxlogs)\n    }\n}<\/pre>\n
\u7b49\u5f85\u7ec4\u5b9e\u9645\u4e0a\u4e0d\u8d77\u4f5c\u7528\uff0c\u56e0\u4e3a\u901a\u9053\u53ef\u80fd\u4f1a\u586b\u6ee1\u5e76\u4e14\u4f8b\u7a0b\u4f1a\u88ab\u5361\u4f4f\uff08\u56e0\u4e3a\u6211\u4e0d\u77e5\u9053\u63d0\u524d\u4f1a\u6709\u591a\u5c11\u7ed3\u679c\uff09<\/p>\n
\u5728\u901a\u9053\u4e0a\u53d1\u9001\u7a7a\u5b57\u7b26\u4e32\u4f5c\u4e3a goroutine \u53d1\u51fa\u201c\u5b8c\u6210\u201d\u4fe1\u53f7\u7684\u65b9\u5f0f\u662f\u5426\u5408\u89c4\uff1f\u5c31\u50cf\u4e0b\u9762\u8fd9\u6837\uff1a<\/p>\n
\/\/ collect filepaths from channel\nfiles := make([]string, 0, maxLogs)\nfor file := range fpchan {\n    if file == \"\" {\n        fmt.Println(\"goroutine finished\")\n        numRunning--\n        if numRunning == 0 {\n             break\n        }\n        continue\n    }\n    if len(files) <= cap(files) {\n        files.append(file)\n    } else {\n        fmt.Println(\"Reached max logfile count of %d\\n\", maxLogs)\n    }\n}<\/pre>\n
\u5bf9\u4e8e\u8fd9\u79cd\u60c5\u51b5\uff0c\u7531\u4e8e\u7a7a\u6587\u4ef6\u8def\u5f84\u65e0\u6548\uff0c\u56e0\u6b64\u5b83\u53ef\u4ee5\u4f5c\u4e3a\u7a77\u4eba\u7684\u4fe1\u53f7\u3002\u8fd9\u611f\u89c9\u5c31\u50cf\u662f\u4e00\u4e2a\u9ed1\u5ba2\uff0c\u6211\u8ba4\u4e3a\u5e94\u8be5\u6709\u66f4\u597d\u7684\u89e3\u51b3\u65b9\u6848<\/p>\n
\u6709\u4ec0\u4e48\u65b9\u6cd5\u53ef\u4ee5\u4ee5\u4e00\u79cd\u4e0d\u592a\u590d\u6742\u7684\u65b9\u5f0f\u505a\u5230\u8fd9\u4e00\u70b9\uff08\u4e00\u5806\u989d\u5916\u7684\u901a\u9053\u3001\u975e\u963b\u585e\u63a5\u6536\u7b49\uff09\uff1f\u5982\u679c\u6bd4\u8fd9\u590d\u6742\u5f97\u591a\uff0c\u6211\u53ea\u4f1a\u6309\u987a\u5e8f\u6267\u884c\u5b83\u4eec\uff0c\u4f46\u6211\u8ba4\u4e3a\u8fd9\u662f\u5229\u7528\u5e76\u53d1\u7684\u597d\u673a\u4f1a<\/p>\n
 <\/p>\n
\u6b63\u786e\u7b54\u6848<\/h2>\n
 <\/p>\n
\u60a8\u53ef\u4ee5\u5728\u6b64\u5904\u4f7f\u7528 waitgroup<\/code>\u3002\u4f46\u662f\u60a8\u9700\u8981\u5728 goroutine \u4e2d\u7b49\u5f85 waitgroup\uff0c\u5e76\u4e14\u5728\u8be5 goroutine \u4e2d\uff0c\u5f53 waitgroup \u5b8c\u6210\u65f6\u5173\u95ed\u901a\u9053\uff0c\u4ee5\u4fbf\u4e3b\u5faa\u73af\u7ec8\u6b62\uff1a<\/p>\n
var wg sync.WaitGroup\n\/\/ start a routine to traverse each directory\nfpchan := make(chan string, 100)\nfor _, dir := range numDirs {\n    fmt.Printf(\"Searching for file in %s\\n\", dir)\n    wg.Add(1)\n    go func(dir string) {\n        findLogs(searchString, dir, fpchan)\n        wg.Done()\n    }(dir)\n}\n\ngo func() {\n    wg.Wait()\n    close(fpchan)\n}()<\/pre>\n
\uff08\u60a8\u5728 fpchan<\/code> \u4e0a\u7684\u6536\u96c6\u5faa\u73af\u4fdd\u6301\u4e0d\u53d8\uff09<\/p>\n
\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u5982\u4f55\u5728\u4e3b\u52a8\u4ece\u901a\u9053\u8bfb\u53d6\u6570\u636e\u7684\u540c\u65f6\u68c0\u67e5 goroutine \u662f\u5426\u5b8c\u6210\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-208182","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208182","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=208182"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208182\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}