{"id":122152,"date":"2024-03-24T05:15:08","date_gmt":"2024-03-23T20:15:08","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/%e9%ab%98%e5%ba%a6%e3%81%aa%e6%8a%80%ef%bc%9ago%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bwaitgroup%e3%81%a8%e3%82%b4%e3%83%bc%e7%a8%8b%e3%81%ae%e3%82%b9%e3%82%b1%e3%82%b8%e3%83%a5%e3%83%bc%e3%83%aa%e3%83%b3\/"},"modified":"2024-03-27T12:11:31","modified_gmt":"2024-03-27T03:11:31","slug":"%e9%ab%98%e5%ba%a6%e3%81%aa%e6%8a%80%ef%bc%9ago%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bwaitgroup%e3%81%a8%e3%82%b4%e3%83%bc%e7%a8%8b%e3%81%ae%e3%82%b9%e3%82%b1%e3%82%b8%e3%83%a5%e3%83%bc%e3%83%aa%e3%83%b3","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/%e9%ab%98%e5%ba%a6%e3%81%aa%e6%8a%80%ef%bc%9ago%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bwaitgroup%e3%81%a8%e3%82%b4%e3%83%bc%e7%a8%8b%e3%81%ae%e3%82%b9%e3%82%b1%e3%82%b8%e3%83%a5%e3%83%bc%e3%83%aa%e3%83%b3\/","title":{"rendered":"\u9ad8\u5ea6\u306a\u6280\uff1aGo\u306b\u304a\u3051\u308bWaitGroup\u3068\u30b4\u30fc\u7a0b\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0"},"content":{"rendered":"<p>Go\u306b\u304a\u3051\u308bWaitGroup\u3068goroutine\u8abf\u5ea6\u306f\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3068\u3057\u3066\u975e\u5e38\u306b\u91cd\u8981\u3067\u3042\u308a\u3001\u540c\u6642\u5b9f\u884c\u30bf\u30b9\u30af\u3084goroutine\u306e\u540c\u671f\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p>WaitGroup\u306f\u3001\u4e00\u9023\u306egoroutine\u304c\u3059\u3079\u3066\u5b9f\u884c\u3092\u7d42\u3048\u308b\u306e\u3092\u5f85\u3064\u30ab\u30a6\u30f3\u30bf\u3067\u3059\u3002\u3059\u3079\u3066\u306egoroutine\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u30e1\u30a4\u30f3goroutine\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002WaitGroup\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30e1\u30a4\u30f3goroutine\u304c\u7d42\u4e86\u3059\u308b\u524d\u306b\u3059\u3079\u3066\u306egoroutine\u304c\u5b8c\u4e86\u3059\u308b\u3088\u3046\u78ba\u5b9f\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>WaitGroup\u3092\u4f7f\u7528\u3057\u305f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">package<\/span> main\r\n<span class=\"hljs-keyword\">import<\/span> (\r\n<span class=\"hljs-string\">\"fmt\"<\/span>\r\n<span class=\"hljs-string\">\"sync\"<\/span>\r\n)\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-title\">worker<\/span><span class=\"hljs-params\">(id <span class=\"hljs-type\">int<\/span>, wg *sync.WaitGroup)<\/span><\/span> {\r\n<span class=\"hljs-keyword\">defer<\/span> wg.Done()\r\nfmt.Printf(<span class=\"hljs-string\">\"Worker %d starting\\n\"<\/span>, id)\r\n<span class=\"hljs-comment\">\/\/ \u6a21\u62df\u8017\u65f6\u64cd\u4f5c<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> i := <span class=\"hljs-number\">0<\/span>; i &lt; <span class=\"hljs-number\">100000000<\/span>; i++ {\r\n}\r\nfmt.Printf(<span class=\"hljs-string\">\"Worker %d done\\n\"<\/span>, id)\r\n}\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\n<span class=\"hljs-keyword\">var<\/span> wg sync.WaitGroup\r\n<span class=\"hljs-keyword\">for<\/span> i := <span class=\"hljs-number\">1<\/span>; i &lt;= <span class=\"hljs-number\">5<\/span>; i++ {\r\nwg.Add(<span class=\"hljs-number\">1<\/span>)\r\n<span class=\"hljs-keyword\">go<\/span> worker(i, &amp;wg)\r\n}\r\nwg.Wait()\r\nfmt.Println(<span class=\"hljs-string\">\"All workers done\"<\/span>)\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u306e\u4f8b\u3067\u306f\u30015\u3064\u306e\u30ef\u30fc\u30ab\u30fc\u30b4\u30eb\u30fc\u30c1\u30f3\u3092\u4f5c\u6210\u3057\u3001\u305d\u308c\u3089\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067WaitGroup\u3092\u4f7f\u7528\u3057\u3066\u5f85\u3061\u307e\u3059\u3002\u5404\u30ef\u30fc\u30ab\u30fc\u30b4\u30eb\u30fc\u30c1\u30f3\u306e\u958b\u59cb\u3068\u7d42\u4e86\u6642\u306b\u306f\u3001WaitGroup\u306eDone()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30ab\u30a6\u30f3\u30bf\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002\u30e1\u30a4\u30f3\u306e\u30b4\u30eb\u30fc\u30c1\u30f3\u3067\u306f\u3001Wait()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30ab\u30a6\u30f3\u30bf\u304c0\u306b\u306a\u308b\u307e\u3067\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<p>\u30b4\u30fc\u30e9\u30f3\u30bf\u30a4\u30e0\u30b7\u30b9\u30c6\u30e0\u306f Goroutine Scheduler \u3068\u547c\u3070\u308c\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3001\u8907\u6570\u306e\u30b4\u30eb\u30fc\u30c1\u30f3\u9593\u3067\u3069\u306e\u3088\u3046\u306b\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3068\u5207\u308a\u66ff\u3048\u3092\u884c\u3046\u304b\u3092\u7ba1\u7406\u3057\u3066\u3044\u307e\u3059\u3002\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u306f\u3001\u3044\u3064\u30b4\u30eb\u30fc\u30c1\u30f3\u3092\u5207\u308a\u66ff\u3048\u3066\u3001\u3069\u306e\u30b9\u30ec\u30c3\u30c9\u306e\u57f7\u884c\u306b\u3069\u306e\u30b4\u30eb\u30fc\u30c1\u30f3\u3092\u5272\u308a\u5f53\u3066\u308b\u304b\u3092\u6c7a\u5b9a\u3059\u308b\u4e00\u9023\u306e\u30eb\u30fc\u30eb\u306b\u5f93\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30b3\u30eb\u30fc\u30c1\u30f3\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u306b\u304a\u3051\u308b\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>GOMAXPROCS\u74b0\u5883\u5909\u6570\u306f\u540c\u6642\u306b\u5b9f\u884c\u3067\u304d\u308b\u6700\u5927OS\u30b9\u30ec\u30c3\u30c9\u6570\u3092\u8a2d\u5b9a\u3059\u308b\u3002 \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306f\u30de\u30b7\u30f3\u4e0a\u306eCPU\u30b3\u30a2\u6570\u3002GOMAXPROCS\u306e\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u30b3\u30f3\u30ab\u30ec\u30f3\u30c8\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u306f\u632f\u308b\u821e\u3044\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/li>\n<li>runtime.Gosched():\u3053\u306e\u95a2\u6570\u306f\u3001\u30b4\u30eb\u30fc\u30c1\u30f3\u304c\u73fe\u5728\u306e\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u884c\u6a29\u3092\u81ea\u4e3b\u7684\u306b\u653e\u68c4\u3057\u3001\u4ed6\u306e\u30b4\u30eb\u30fc\u30c1\u30f3\u304c\u5b9f\u884c\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3001\u3053\u308c\u3092\u4f7f\u7528\u3057\u3066\u30b4\u30eb\u30fc\u30c1\u30f3\u304c\u9577\u3044\u9593\u30b9\u30ec\u30c3\u30c9\u3092\u5360\u6709\u3059\u308b\u306e\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>runtime.LockOSThread()\u3068runtime.UnlockOSThread()\uff1a\u3053\u306e2\u3064\u306e\u95a2\u6570\u306f\u3001\u305d\u308c\u305e\u308c\u73fe\u5728\u306e\u30b3\u30eb\u30fc\u30c1\u30f3\u306e\u73fe\u5728\u306e\u30b9\u30ec\u30c3\u30c9\u3078\u306e\u30ed\u30c3\u30af\u3001\u307e\u305f\u306f\u73fe\u5728\u306e\u30b9\u30ec\u30c3\u30c9\u3078\u306e\u30ed\u30c3\u30af\u306e\u89e3\u9664\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u7279\u5b9a\u306e\u72b6\u6cc1\u3067\u306f\u3001\u30b3\u30eb\u30fc\u30c1\u30f3\u3092\u7279\u5b9a\u306e\u30b9\u30ec\u30c3\u30c9\u306b\u30ed\u30c3\u30af\u3057\u3066\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u9ad8\u5ea6\u306a\u6280\u6cd5\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30eb\u30fc\u30c1\u30f3\u5b9f\u884c\u306e\u7ba1\u7406\u3084\u5236\u5fa1\u3092\u5411\u4e0a\u3055\u305b\u3001\u540c\u6642\u4e26\u884c\u51e6\u7406\u306e\u6027\u80fd\u3084\u52b9\u7387\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Go\u306b\u304a\u3051\u308bWaitGroup\u3068goroutine\u8abf\u5ea6\u306f\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3068\u3057\u3066\u975e\u5e38\u306b\u91cd\u8981\u3067\u3042\u308a\u3001\u540c\u6642\u5b9f\u884c\u30bf\u30b9\u30af\u3084goroutine\u306e\u540c\u671f\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002 WaitGroup\u306f\u3001\u4e00\u9023\u306egoroutine\u304c\u3059\u3079\u3066\u5b9f [&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-122152","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>\u9ad8\u5ea6\u306a\u6280\uff1aGo\u306b\u304a\u3051\u308bWaitGroup\u3068\u30b4\u30fc\u7a0b\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0 - 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\/\u9ad8\u5ea6\u306a\u6280\uff1ago\u306b\u304a\u3051\u308bwaitgroup\u3068\u30b4\u30fc\u7a0b\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u9ad8\u5ea6\u306a\u6280\uff1aGo\u306b\u304a\u3051\u308bWaitGroup\u3068\u30b4\u30fc\u7a0b\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\" \/>\n<meta property=\"og:description\" content=\"Go\u306b\u304a\u3051\u308bWaitGroup\u3068goroutine\u8abf\u5ea6\u306f\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3068\u3057\u3066\u975e\u5e38\u306b\u91cd\u8981\u3067\u3042\u308a\u3001\u540c\u6642\u5b9f\u884c\u30bf\u30b9\u30af\u3084goroutine\u306e\u540c\u671f\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002 WaitGroup\u306f\u3001\u4e00\u9023\u306egoroutine\u304c\u3059\u3079\u3066\u5b9f [&hellip;]\" \/>\n<meta property=\"og:url\" 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