{"id":123507,"date":"2024-03-24T11:34:07","date_gmt":"2024-03-24T02:34:07","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/%e4%b8%a6%e8%a1%8c%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%9f%e3%83%b3%e3%82%b0%e3%81%ae%e3%83%86%e3%82%af%e3%83%8b%e3%83%83%e3%82%af-go%e3%81%aewaitgroup%e3%81%ae%e9%ab%98%e5%ba%a6%e3%81%aa\/"},"modified":"2024-04-06T00:38:16","modified_gmt":"2024-04-05T15:38:16","slug":"%e4%b8%a6%e8%a1%8c%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%9f%e3%83%b3%e3%82%b0%e3%81%ae%e3%83%86%e3%82%af%e3%83%8b%e3%83%83%e3%82%af-go%e3%81%aewaitgroup%e3%81%ae%e9%ab%98%e5%ba%a6%e3%81%aa","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/%e4%b8%a6%e8%a1%8c%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%9f%e3%83%b3%e3%82%b0%e3%81%ae%e3%83%86%e3%82%af%e3%83%8b%e3%83%83%e3%82%af-go%e3%81%aewaitgroup%e3%81%ae%e9%ab%98%e5%ba%a6%e3%81%aa\/","title":{"rendered":"\u4e26\u884c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30c6\u30af\u30cb\u30c3\u30af: Go\u306eWaitGroup\u306e\u9ad8\u5ea6\u306a\u4f7f\u3044\u65b9"},"content":{"rendered":"<p>Go\u8a00\u8a9e\u306e\u4e26\u884c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u3001WaitGroup\u306f\u3001\u4e00\u9023\u306e\u4e26\u884c\u64cd\u4f5c\u306e\u5b8c\u4e86\u3092\u5f85\u6a5f\u3059\u308b\u306e\u306b\u975e\u5e38\u306b\u5f79\u7acb\u3064\u30c4\u30fc\u30eb\u3067\u3059\u3002\u57fa\u672c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u306b\u52a0\u3048\u3066\u3001WaitGroup\u306b\u306f\u3001\u4e26\u884c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3088\u308a\u67d4\u8edf\u304b\u3064\u52b9\u7387\u7684\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u9ad8\u5ea6\u306a\u4f7f\u7528\u65b9\u6cd5\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u5f85\u6a5f\u6570\u3092\u52d5\u7684\u306b\u5897\u3084\u3059\u305f\u3081\u306bAdd\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b<\/li>\n<\/ol>\n<p>\u4e26\u884c\u51e6\u7406\u306e\u6570\u304c\u4e8b\u524d\u306b\u5206\u304b\u3089\u306a\u3044\u5834\u5408\u3067\u3082\u3001\u51e6\u7406\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u5f85\u6a5f\u3092\u884c\u3044\u305f\u3044\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u306e\u3068\u304d\u3001WaitGroup\u306eAdd\u30e1\u30bd\u30c3\u30c9\u3092\u7528\u3044\u3066\u3001\u5f85\u6a5f\u3059\u308b\u6570\u3092\u52d5\u7684\u306b\u5897\u3084\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">var<\/span> wg sync.WaitGroup\r\n<span class=\"hljs-comment\">\/\/ \u6a21\u62df\u5e76\u53d1\u64cd\u4f5c<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> i := <span class=\"hljs-number\">0<\/span>; i &lt; <span class=\"hljs-number\">10<\/span>; i++ {\r\nwg.Add(<span class=\"hljs-number\">1<\/span>)\r\n<span class=\"hljs-keyword\">go<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\n<span class=\"hljs-comment\">\/\/ \u5e76\u53d1\u64cd\u4f5c\u7684\u903b\u8f91<\/span>\r\nwg.Done()\r\n}()\r\n}\r\nwg.Wait()\r\n<\/code><\/pre>\n<p>\u4e0a\u306e\u4f8b\u3067\u306f\u3001\u3042\u3089\u304b\u3058\u3081\u305d\u306e\u6570\u3092\u77e5\u3089\u305b\u308b\u3053\u3068\u306a\u304f\u3001\u30eb\u30fc\u30d7\u306710\u500b\u306e\u540c\u6642\u64cd\u4f5c\u3092\u8ffd\u52a0\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u540c\u6642\u64cd\u4f5c\u306f\u5b8c\u4e86\u3057\u305f\u6642\u70b9\u3067WaitGroup\u306eDone\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u5b8c\u4e86\u3092\u4f1d\u3048\u3001\u6700\u5f8c\u306bWait\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u3063\u3066\u3059\u3079\u3066\u306e\u64cd\u4f5c\u306e\u5b8c\u4e86\u3092\u5f85\u3061\u307e\u3059\u3002<\/p>\n<ol>\n<li>WaitGroup\u306eWait\u30e1\u30bd\u30c3\u30c9\u3067\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3092\u8a2d\u5b9a\u3059\u308b<\/li>\n<\/ol>\n<p>WaitGroup\u306eWait\u30e1\u30bd\u30c3\u30c9\u3092select\u6587\u3068\u4f75\u7528\u3059\u308b\u3053\u3068\u3067\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3092\u8a2d\u3051\u305f\u5f85\u3061\u5408\u308f\u305b\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">var<\/span> wg sync.WaitGroup\r\n<span class=\"hljs-comment\">\/\/ \u6a21\u62df\u5e76\u53d1\u64cd\u4f5c<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> i := <span class=\"hljs-number\">0<\/span>; i &lt; <span class=\"hljs-number\">10<\/span>; i++ {\r\nwg.Add(<span class=\"hljs-number\">1<\/span>)\r\n<span class=\"hljs-keyword\">go<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\n<span class=\"hljs-comment\">\/\/ \u5e76\u53d1\u64cd\u4f5c\u7684\u903b\u8f91<\/span>\r\nwg.Done()\r\n}()\r\n}\r\ntimeout := <span class=\"hljs-number\">5<\/span> * time.Second\r\ndone := <span class=\"hljs-built_in\">make<\/span>(<span class=\"hljs-keyword\">chan<\/span> <span class=\"hljs-keyword\">struct<\/span>{})\r\n<span class=\"hljs-keyword\">go<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\nwg.Wait()\r\n<span class=\"hljs-built_in\">close<\/span>(done)\r\n}()\r\n<span class=\"hljs-keyword\">select<\/span> {\r\n<span class=\"hljs-keyword\">case<\/span> &lt;-done:\r\n<span class=\"hljs-comment\">\/\/ \u6240\u6709\u64cd\u4f5c\u5b8c\u6210<\/span>\r\n<span class=\"hljs-keyword\">case<\/span> &lt;-time.After(timeout):\r\n<span class=\"hljs-comment\">\/\/ \u8d85\u65f6<\/span>\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u306e\u4f8b\u3067\u306f\u3001goroutine\u3092\u3055\u3089\u306b1\u3064\u4f7f\u7528\u3057\u3066Wait\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u884c\u3057\u3001\u5f85\u6a5f\u5b8c\u4e86\u5f8c\u306bdone\u3068\u3044\u3046\u30c1\u30e3\u30cd\u30eb\u3092\u30af\u30ed\u30fc\u30ba\u3057\u307e\u3059\u3002\u6b21\u306b\u3001\u30e1\u30a4\u30f3\u306egoroutine\u3067select\u6587\u3092\u4f7f\u3063\u3066done\u30c1\u30e3\u30cd\u30eb\u304c\u30af\u30ed\u30fc\u30ba\u3055\u308c\u308b\u304b\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3092\u5f85\u3064\u3053\u3068\u3067\u3001\u5f85\u6a5f\u3092\u7d9a\u3051\u308b\u304b\u3069\u3046\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>WaitGroup\u306eWait\u30e1\u30bd\u30c3\u30c9\u3092\u6d3b\u7528\u3057\u3066\u3001\u540c\u6642\u5b9f\u884c\u30bf\u30b9\u30af\u306e\u4e00\u90e8\u5b8c\u4e86\u3092\u5f85\u6a5f<\/li>\n<\/ol>\n<p>\u3042\u308b\u5834\u5408\u3001\u8907\u6570\u306e\u4e26\u884c\u30bf\u30b9\u30af\u306e\u4e2d\u3067\u3001\u4e00\u90e8\u306e\u30bf\u30b9\u30af\u304c\u5b8c\u4e86\u3057\u305f\u3089\u4ee5\u964d\u306e\u51e6\u7406\u3092\u5b9f\u884c\u3057\u305f\u3044\u306e\u306b\u3001\u3059\u3079\u3066\u306e\u30bf\u30b9\u30af\u306e\u5b8c\u4e86\u3092\u5f85\u305f\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u306fWaitGroup\u306eWait\u30e1\u30bd\u30c3\u30c9\u3068\u30c1\u30e3\u30cd\u30eb\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u90e8\u5206\u5b8c\u4e86\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">var<\/span> wg sync.WaitGroup\r\n<span class=\"hljs-comment\">\/\/ \u6a21\u62df\u5e76\u53d1\u64cd\u4f5c<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> i := <span class=\"hljs-number\">0<\/span>; i &lt; <span class=\"hljs-number\">10<\/span>; i++ {\r\nwg.Add(<span class=\"hljs-number\">1<\/span>)\r\n<span class=\"hljs-keyword\">go<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\n<span class=\"hljs-comment\">\/\/ \u5e76\u53d1\u64cd\u4f5c\u7684\u903b\u8f91<\/span>\r\nwg.Done()\r\n}()\r\n}\r\ndone := <span class=\"hljs-built_in\">make<\/span>(<span class=\"hljs-keyword\">chan<\/span> <span class=\"hljs-keyword\">struct<\/span>{})\r\n<span class=\"hljs-keyword\">go<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\nwg.Wait()\r\n<span class=\"hljs-built_in\">close<\/span>(done)\r\n}()\r\n<span class=\"hljs-comment\">\/\/ \u90e8\u5206\u5b8c\u6210\u7684\u903b\u8f91<\/span>\r\n<span class=\"hljs-keyword\">select<\/span> {\r\n<span class=\"hljs-keyword\">case<\/span> &lt;-done:\r\n<span class=\"hljs-comment\">\/\/ \u6240\u6709\u64cd\u4f5c\u5b8c\u6210<\/span>\r\n<span class=\"hljs-keyword\">default<\/span>:\r\n<span class=\"hljs-comment\">\/\/ \u90e8\u5206\u64cd\u4f5c\u5b8c\u6210<\/span>\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u306e\u4f8b\u3067\u306f\u3001Wait \u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c\u3068 wait \u306e\u5b8c\u4e86\u5f8c\u306b\u30c1\u30e3\u30f3\u30cd\u30eb\u3092\u9589\u3058\u308b\u305f\u3081\u306b\u3001\u8ffd\u52a0\u306e goroutine \u3092\u540c\u69d8\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002\u305d\u306e\u3042\u3068\u3001\u30e1\u30a4\u30f3\u306e goroutine \u3067 select \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3001done \u30c1\u30e3\u30f3\u30cd\u30eb\u304c\u9589\u3058\u3089\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002\u3053\u306e\u5224\u65ad\u306b\u3088\u308a\u3001\u305d\u306e\u307e\u307e\u5f85\u3064\u304b\u3001\u5b8c\u4e86\u90e8\u5206\u306e\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u884c\u3059\u308b\u304b\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u3068\u3081<\/p>\n<p>WaitGroup\u306e\u9ad8\u5ea6\u306a\u4f7f\u3044\u65b9\u306f\u3001\u4e26\u884c\u51e6\u7406\u306e\u5b8c\u4e86\u3092\u3088\u308a\u67d4\u8edf\u306b\u6271\u3046\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002Wait\u306e\u6570\u3092\u52d5\u7684\u306b\u5897\u3084\u3057\u305f\u308a\u3001\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3092\u8a2d\u5b9a\u3057\u305f\u308a\u3001\u5b8c\u4e86\u306e\u4e00\u90e8\u3092\u5b9f\u73fe\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u3067\u3001\u4e26\u884c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u52b9\u7387\u3092\u3088\u308a\u9069\u5207\u306b\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002\u5b9f\u969b\u306e\u4e26\u884c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u306f\u3001\u7279\u5b9a\u306e\u30cb\u30fc\u30ba\u306b\u5fdc\u3058\u3066\u9069\u5207\u306aWaitGroup\u306e\u4f7f\u7528\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u3092\u3088\u308a\u4fe1\u983c\u6027\u304c\u9ad8\u304f\u52b9\u7387\u7684\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Go\u8a00\u8a9e\u306e\u4e26\u884c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u3001WaitGroup\u306f\u3001\u4e00\u9023\u306e\u4e26\u884c\u64cd\u4f5c\u306e\u5b8c\u4e86\u3092\u5f85\u6a5f\u3059\u308b\u306e\u306b\u975e\u5e38\u306b\u5f79\u7acb\u3064\u30c4\u30fc\u30eb\u3067\u3059\u3002\u57fa\u672c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u306b\u52a0\u3048\u3066\u3001WaitGroup\u306b\u306f\u3001\u4e26\u884c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3088\u308a\u67d4\u8edf\u304b\u3064\u52b9\u7387\u7684\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u9ad8 [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-123507","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u4e26\u884c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30c6\u30af\u30cb\u30c3\u30af: Go\u306eWaitGroup\u306e\u9ad8\u5ea6\u306a\u4f7f\u3044\u65b9 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/\u4e26\u884c\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30c6\u30af\u30cb\u30c3\u30af-go\u306ewaitgroup\u306e\u9ad8\u5ea6\u306a\/\" 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