{"id":123405,"date":"2024-03-24T11:07:40","date_gmt":"2024-03-24T02:07:40","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/go%e3%81%ae%e4%b8%a6%e8%a1%8c%e3%82%b9%e3%83%ac%e3%83%83%e3%83%89%e3%81%ae%e5%ae%9f%e8%a3%85%ef%bc%9ago-waitgroup%e3%81%ae%e6%9c%80%e9%81%a9%e5%8c%96%e5%ae%9f%e8%a3%85\/"},"modified":"2024-03-26T20:48:21","modified_gmt":"2024-03-26T11:48:21","slug":"go%e3%81%ae%e4%b8%a6%e8%a1%8c%e3%82%b9%e3%83%ac%e3%83%83%e3%83%89%e3%81%ae%e5%ae%9f%e8%a3%85%ef%bc%9ago-waitgroup%e3%81%ae%e6%9c%80%e9%81%a9%e5%8c%96%e5%ae%9f%e8%a3%85","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/go%e3%81%ae%e4%b8%a6%e8%a1%8c%e3%82%b9%e3%83%ac%e3%83%83%e3%83%89%e3%81%ae%e5%ae%9f%e8%a3%85%ef%bc%9ago-waitgroup%e3%81%ae%e6%9c%80%e9%81%a9%e5%8c%96%e5%ae%9f%e8%a3%85\/","title":{"rendered":"Go\u306e\u4e26\u884c\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u88c5\uff1aGo WaitGroup\u306e\u6700\u9069\u5316\u5b9f\u88c5"},"content":{"rendered":"<p>Go\u8a00\u8a9e\u3067\u306f\u3001\u4e26\u884c\u30b8\u30e7\u30d6\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u3092\u4f5c\u6210\u3059\u308b\u3068\u304d\u306bsync.WaitGroup\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002WaitGroup\u306f\u3001\u540c\u6642\u306b\u8907\u6570\u306e\u30bf\u30b9\u30af\u306e\u5b8c\u4e86\u3092\u5f85\u3064\u7c21\u5358\u306a\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>\u5927\u898f\u6a21\u4e26\u5217\u51e6\u7406\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u3001WaitGroup\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 Wait() \u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u305f\u3073\u306b\u3001\u3059\u3079\u3066\u306e\u4e26\u5217\u30bf\u30b9\u30af\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u73fe\u5728\u306e\u30b4\u30eb\u30fc\u30c1\u30f3\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u904e\u5270\u306a\u30b4\u30eb\u30fc\u30c1\u30f3\u304c\u4f5c\u6210\u3055\u308c\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u4f4e\u4e0b\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>WaitGroup \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u306e\u306b\u306f\u3001\u30d0\u30c3\u30d5\u30a1\u4ed8\u304d\u30c1\u30e3\u30cd\u30eb\u3092\u5c0e\u5165\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308b\u3002\u624b\u9806\u306f\u4e0b\u8a18\u306e\u901a\u308a\u3002<\/p>\n<ol>\n<li>\u30d7\u30fc\u30eb<\/li>\n<li>\u540c\u671f\u7528WaitGroup<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">type<\/span> Pool <span class=\"hljs-keyword\">struct<\/span> {\r\nwg     sync.WaitGroup\r\nworker <span class=\"hljs-keyword\">chan<\/span> <span class=\"hljs-keyword\">struct<\/span>{}\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u30d7\u30fc\u30eb<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-title\">NewPool<\/span><span class=\"hljs-params\">(maxWorkers <span class=\"hljs-type\">int<\/span>)<\/span><\/span> *Pool {\r\n<span class=\"hljs-keyword\">return<\/span> &amp;Pool{\r\nworker: <span class=\"hljs-built_in\">make<\/span>(<span class=\"hljs-keyword\">chan<\/span> <span class=\"hljs-keyword\">struct<\/span>{}, maxWorkers),\r\n}\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u8ffd\u52a0\u3059\u308b<\/li>\n<li>\u30a6\u30a7\u30a4\u30c8\u30b0\u30eb\u30fc\u30d7<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-params\">(p *Pool)<\/span><\/span> Add() {\r\np.wg.Add(<span class=\"hljs-number\">1<\/span>)\r\np.worker &lt;- <span class=\"hljs-keyword\">struct<\/span>{}{}\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u7d42\u4e86<\/li>\n<li>\u5f85\u3061\u884c\u5217<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-params\">(p *Pool)<\/span><\/span> Done() {\r\np.wg.Done()\r\n&lt;-p.worker\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u5f85\u3064()<\/li>\n<li>\u540c\u671f WaitGroup<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-params\">(p *Pool)<\/span><\/span> Wait() {\r\np.wg.Wait()\r\n}\r\n<\/code><\/pre>\n<p>\u6700\u9069\u5316\u3055\u308c\u305f Pool \u69cb\u9020\u4f53\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u904e\u5270\u306a goroutine \u306e\u4f5c\u6210\u3092\u56de\u907f\u3057\u3001\u3053\u308c\u306b\u3088\u308a\u4e26\u884c\u51e6\u7406\u306e\u6027\u80fd\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u5b8c\u5168\u306a\u30b5\u30f3\u30d7\u30eb \u30b3\u30fc\u30c9\u3092\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<span class=\"hljs-string\">\"time\"<\/span>\r\n)\r\n<span class=\"hljs-keyword\">type<\/span> Pool <span class=\"hljs-keyword\">struct<\/span> {\r\nwg     sync.WaitGroup\r\nworker <span class=\"hljs-keyword\">chan<\/span> <span class=\"hljs-keyword\">struct<\/span>{}\r\n}\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-title\">NewPool<\/span><span class=\"hljs-params\">(maxWorkers <span class=\"hljs-type\">int<\/span>)<\/span><\/span> *Pool {\r\n<span class=\"hljs-keyword\">return<\/span> &amp;Pool{\r\nworker: <span class=\"hljs-built_in\">make<\/span>(<span class=\"hljs-keyword\">chan<\/span> <span class=\"hljs-keyword\">struct<\/span>{}, maxWorkers),\r\n}\r\n}\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-params\">(p *Pool)<\/span><\/span> Add() {\r\np.wg.Add(<span class=\"hljs-number\">1<\/span>)\r\np.worker &lt;- <span class=\"hljs-keyword\">struct<\/span>{}{}\r\n}\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-params\">(p *Pool)<\/span><\/span> Done() {\r\np.wg.Done()\r\n&lt;-p.worker\r\n}\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-params\">(p *Pool)<\/span><\/span> Wait() {\r\np.wg.Wait()\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\npool := NewPool(<span class=\"hljs-number\">3<\/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\npool.Add()\r\n<span class=\"hljs-keyword\">go<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span><span class=\"hljs-params\">(i <span class=\"hljs-type\">int<\/span>)<\/span><\/span> {\r\n<span class=\"hljs-keyword\">defer<\/span> pool.Done()\r\ntime.Sleep(time.Second)\r\nfmt.Printf(<span class=\"hljs-string\">\"Task %d done\\n\"<\/span>, i)\r\n}(i)\r\n}\r\npool.Wait()\r\nfmt.Println(<span class=\"hljs-string\">\"All tasks done\"<\/span>)\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u6700\u5927\u540c\u6642\u5b9f\u884c\u65703\u306e\u540c\u6642\u5b9f\u884c\u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\u30e3\u304c\u4f5c\u6210\u3055\u308c\u300110\u500b\u306e\u30bf\u30b9\u30af\u306e\u5b9f\u884c\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30c8\u3057\u307e\u3059\u3002\u5404\u30bf\u30b9\u30af\u306f1\u79d2\u9593\u30b9\u30ea\u30fc\u30d7\u3057\u3066\u304b\u3089\u5b8c\u4e86\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u51fa\u529b\u3057\u307e\u3059\u3002\u5168\u3066\u306e\u30bf\u30b9\u30af\u306e\u5b8c\u4e86\u3092\u5f85\u3063\u305f\u5f8c\u3001\u300cAll tasks done\u300d\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u6700\u9069\u5316\u3055\u308c\u305fPool\u69cb\u9020\u4f53\u306e\u5229\u7528\u306b\u3088\u308a\u3001\u4e26\u5217\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u52b9\u679c\u7684\u306b\u5236\u5fa1\u3057\u3001goroutine\u306e\u904e\u5270\u306a\u751f\u6210\u3092\u9632\u6b62\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Go\u8a00\u8a9e\u3067\u306f\u3001\u4e26\u884c\u30b8\u30e7\u30d6\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u3092\u4f5c\u6210\u3059\u308b\u3068\u304d\u306bsync.WaitGroup\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002WaitGroup\u306f\u3001\u540c\u6642\u306b\u8907\u6570\u306e\u30bf\u30b9\u30af\u306e\u5b8c\u4e86\u3092\u5f85\u3064\u7c21\u5358\u306a\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u5927\u898f\u6a21\u4e26\u5217\u51e6\u7406\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u3001WaitGroup [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-123405","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>Go\u306e\u4e26\u884c\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u88c5\uff1aGo WaitGroup\u306e\u6700\u9069\u5316\u5b9f\u88c5 - 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\/go\u306e\u4e26\u884c\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u88c5\uff1ago-waitgroup\u306e\u6700\u9069\u5316\u5b9f\u88c5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Go\u306e\u4e26\u884c\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u88c5\uff1aGo WaitGroup\u306e\u6700\u9069\u5316\u5b9f\u88c5\" \/>\n<meta property=\"og:description\" content=\"Go\u8a00\u8a9e\u3067\u306f\u3001\u4e26\u884c\u30b8\u30e7\u30d6\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u3092\u4f5c\u6210\u3059\u308b\u3068\u304d\u306bsync.WaitGroup\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002WaitGroup\u306f\u3001\u540c\u6642\u306b\u8907\u6570\u306e\u30bf\u30b9\u30af\u306e\u5b8c\u4e86\u3092\u5f85\u3064\u7c21\u5358\u306a\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u5927\u898f\u6a21\u4e26\u5217\u51e6\u7406\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u3001WaitGroup [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/go\u306e\u4e26\u884c\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u88c5\uff1ago-waitgroup\u306e\u6700\u9069\u5316\u5b9f\u88c5\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-24T02:07:40+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-26T11:48:21+00:00\" \/>\n<meta name=\"author\" content=\"\u84ee, \u7ffc\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u84ee, \u7ffc\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" 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