{"id":16842,"date":"2017-12-08T15:05:42","date_gmt":"2017-12-08T06:05:42","guid":{"rendered":"https:\/\/vitalify.jp\/blog\/?p=16842"},"modified":"2024-04-26T14:18:38","modified_gmt":"2024-04-26T05:18:38","slug":"swift_gcd","status":"publish","type":"post","link":"https:\/\/vitalify.jp\/blog\/2017\/12\/swift_gcd.html","title":{"rendered":"\u3010Swift 3\u3011Grand Central Dispatch\uff08GCD)\u306e\u30ad\u30e5\u30fc"},"content":{"rendered":"<p>\u306f\u3058\u3081\u306b<\/p>\n<p>\u30a2\u30d7\u30ea\u3067\u306f\u540c\u6642\u306b\u8272\u3005\u306a\u3053\u3068\u3092\u5b9f\u884c\u3059\u308b\u5834\u9762\u304c\u3042\u308b\u306e\u3067\u3001\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u306e\u5b9f\u884c\u304c\u5fc5\u8981\u3067\u3059\u3002 \u9806\u756a\u306b\u30b9\u30ec\u30c3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u9045\u304f\u306a\u308a\u307e\u3059\u306e\u3067\u3001 \u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u51e6\u7406\u3067\u591a\u304f\u306e\u30b9\u30ec\u30c3\u30c9\u3092\u540c\u6642\u306b\u5b9f\u884c\u3057\u307e\u3057\u3087\u3046\u3002 \u4f8b\u3048\u3070\u3000\u8868\u793a\u753b\u9762\u30b9\u30ec\u30c3\u30c9\u3068API\u30b9\u30ec\u30c3\u30c9\u3092\u540c\u6642\u306b\u5b9f\u884c\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 iOS\u306f\u3044\u308d\u3044\u308d\u306a\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u51e6\u7406\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u4f7f\u3044\u65b9\u304c\u4e00\u756a\u7c21\u5358\u306a\u306e\u306fGrand Central Dispatch\uff08GCD)\u3060\u3068\u601d\u3044\u307e\u3059 <\/p>\n<p>\u3053\u3053\u304b\u3089GCD\u306e\u5177\u4f53\u7684\u306a\u4f7f\u3044\u65b9\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u307e\u305a\u306f\u81ea\u5206\u3067\u751f\u6210\u3059\u308b\u30ad\u30e5\u30fc\u306b\u3064\u3044\u3066<br \/>\n<code>DispatchQueue(label: \"jp.name.app.queue\").async {<br \/>\n \/\/\u3053\u3053\u3067\u6b21\u306e\u30bf\u30b9\u30af\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059<br \/>\n}<br \/>\n<\/code><br \/>\n\u4e0a\u8a18\u306e\u30bd\u30fc\u30b9\u3067\u306f\u3053\u306e\u30ad\u30e5\u30fc\u304c\u7d42\u308f\u3063\u305f\u3089\u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u3067\u51e6\u7406\u3092\u5b9f\u884c\u3057\u307e\u3059<br \/>\n\u3042\u3068Main\u30ad\u30e5\u30fc\u306e\u4f7f\u3044\u65b9<br \/>\n<code>DispatchQueue.main.async {<br \/>\n   \/\/ \u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u3067\u51e6\u7406\u3092\u5b9f\u884c\u3057\u307e\u3059<br \/>\n }<br \/>\n<\/code><br \/>\n\u6700\u5f8c\u306fGlobal\u30ad\u30e5\u30fc<br \/>\n<code>DispatchQueue.global(qos: .userInitiated).async {<br \/>\n \/\/\u3053\u3053\u3067\u6b21\u306e\u30bf\u30b9\u30af\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059<br \/>\n }<br \/>\n<\/code><br \/>\n \u81ea\u5206\u3067\u751f\u6210\u3059\u308b\u30ad\u30e5\u30fc\u3068Global\u30ad\u30e5\u30fc\u306f\u4f7f\u3046\u65b9\u6cd5\u306f\u540c\u3058\u3067\u3059\u304c\u3001\u9055\u3046\u70b9\u306f<br \/>\n\u3000\uff0b\u524d\u8005\u306f\u81ea\u5206\u3067\u30ad\u30e5\u30fc\u3092\u751f\u6210\u3057\u307e\u3059 \u3000<br \/>\n  \uff0bGlobal\u30ad\u30e5\u30fc\u306f\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u3002<br \/>\n\u6b21\u306e\u30d6\u30ed\u30b0\u3067\u30ad\u30e5\u30fc\u306e\u8a73\u7d30\u3092\u8aac\u660e\u3057\u307e\u3059<\/p>\n<div class='wp_social_bookmarking_light'>\n            <div class=\"wsbl_facebook_like\"><div id=\"fb-root\"><\/div><fb:like href=\"https:\/\/vitalify.jp\/blog\/2017\/12\/swift_gcd.html\" layout=\"button_count\" action=\"like\" share=\"false\" show_faces=\"false\" ><\/fb:like><\/div>\n            <div class=\"wsbl_google_plus_one\"><g:plusone size=\"medium\" annotation=\"none\" href=\"https:\/\/vitalify.jp\/blog\/2017\/12\/swift_gcd.html\" ><\/g:plusone><\/div>\n            <div class=\"wsbl_hatena_button\"><a href=\"\/\/b.hatena.ne.jp\/entry\/https:\/\/vitalify.jp\/blog\/2017\/12\/swift_gcd.html\" class=\"hatena-bookmark-button\" data-hatena-bookmark-title=\"\u3010Swift 3\u3011Grand Central Dispatch\uff08GCD)\u306e\u30ad\u30e5\u30fc\" data-hatena-bookmark-layout=\"standard\" title=\"\u3053\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u306f\u3066\u306a\u30d6\u30c3\u30af\u30de\u30fc\u30af\u306b\u8ffd\u52a0\"> <img src=\"\/\/b.hatena.ne.jp\/images\/entry-button\/button-only@2x.png\" alt=\"\u3053\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u306f\u3066\u306a\u30d6\u30c3\u30af\u30de\u30fc\u30af\u306b\u8ffd\u52a0\" width=\"20\" height=\"20\" style=\"border: none;\" \/><\/a><script type=\"text\/javascript\" src=\"\/\/b.hatena.ne.jp\/js\/bookmark_button.js\" charset=\"utf-8\" async=\"async\"><\/script><\/div>\n            <div class=\"wsbl_tumblr\"><a href=\"\/\/www.tumblr.com\/share?v=3&u=https%3A%2F%2Fvitalify.jp%2Fblog%2F2017%2F12%2Fswift_gcd.html&t=%E3%80%90Swift%203%E3%80%91Grand%20Central%20Dispatch%EF%BC%88GCD%29%E3%81%AE%E3%82%AD%E3%83%A5%E3%83%BC\" title=\"Share on Tumblr\" style=\"display:inline-block; 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