{"id":6432,"date":"2024-08-06T20:19:55","date_gmt":"2024-08-06T12:19:55","guid":{"rendered":"https:\/\/t.n-years.com\/?p=6432"},"modified":"2024-08-06T20:21:12","modified_gmt":"2024-08-06T12:21:12","slug":"ios-gcd-%e4%b8%ad%e9%98%9f%e5%88%97%e5%92%8c%e7%ba%bf%e7%a8%8b%e7%9a%84%e5%85%b3%e7%b3%bb","status":"publish","type":"post","link":"https:\/\/t.n-years.com\/?p=6432","title":{"rendered":"iOS GCD \u4e2d\u961f\u5217\u548c\u7ebf\u7a0b\u7684\u5173\u7cfb"},"content":{"rendered":"<blockquote>\n<p>\u975e\u539f\u521b\u3001ChatGPT \u95ee\u7b54\u751f\u6210<\/p>\n<\/blockquote>\n<p>\u5728 Grand Central Dispatch (GCD) \u4e2d\uff0c\u961f\u5217\u548c\u7ebf\u7a0b\u7684\u5173\u7cfb\u662f\u7ba1\u7406\u548c\u8c03\u5ea6\u4efb\u52a1\u6267\u884c\u7684\u6838\u5fc3\u3002\u4ee5\u4e0b\u662f\u5b83\u4eec\u4e4b\u95f4\u7684\u5173\u7cfb\u548c\u5173\u952e\u70b9\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u961f\u5217<\/strong>\uff1a<\/p>\n<ul>\n<li><strong>\u5b9a\u4e49<\/strong>\uff1a\u961f\u5217\u662f GCD \u4e2d\u7528\u4e8e\u7ba1\u7406\u548c\u8c03\u5ea6\u4efb\u52a1\u7684\u62bd\u8c61\u7ed3\u6784\u3002\u4efb\u52a1\uff08block \u6216 closure\uff09\u88ab\u6dfb\u52a0\u5230\u961f\u5217\u4e2d\uff0cGCD \u4f1a\u8d1f\u8d23\u6267\u884c\u8fd9\u4e9b\u4efb\u52a1\u3002<\/li>\n<li><strong>\u7c7b\u578b<\/strong>\uff1a\n<ul>\n<li><strong>\u4e32\u884c\u961f\u5217\uff08Serial Queue\uff09<\/strong>\uff1a\u4efb\u52a1\u6309\u63d0\u4ea4\u987a\u5e8f\u4e00\u4e2a\u63a5\u4e00\u4e2a\u5730\u6267\u884c\uff0c\u4fdd\u8bc1\u4e86\u4efb\u52a1\u7684\u987a\u5e8f\u6027\u3002<\/li>\n<li><strong>\u5e76\u884c\u961f\u5217\uff08Concurrent Queue\uff09<\/strong>\uff1a\u4efb\u52a1\u53ef\u4ee5\u5e76\u53d1\u6267\u884c\uff0c\u961f\u5217\u4e2d\u7684\u4efb\u52a1\u987a\u5e8f\u4e0d\u4e00\u5b9a\u4e0e\u63d0\u4ea4\u987a\u5e8f\u76f8\u540c\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u7ebf\u7a0b<\/strong>\uff1a<\/p>\n<ul>\n<li><strong>\u5b9a\u4e49<\/strong>\uff1a\u7ebf\u7a0b\u662f\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u4e00\u4e2a\u57fa\u672c\u6267\u884c\u5355\u5143\uff0c\u5b83\u6267\u884c\u7a0b\u5e8f\u4e2d\u7684\u4ee3\u7801\u3002\u7ebf\u7a0b\u662f\u5b9e\u9645\u8fd0\u884c\u4efb\u52a1\u7684\u5730\u65b9\u3002<\/li>\n<li><strong>\u7ebf\u7a0b\u6c60<\/strong>\uff1aGCD \u4f7f\u7528\u7ebf\u7a0b\u6c60\u6765\u7ba1\u7406\u7ebf\u7a0b\u7684\u521b\u5efa\u548c\u9500\u6bc1\u3002\u7ebf\u7a0b\u6c60\u7684\u76ee\u7684\u662f\u91cd\u7528\u7ebf\u7a0b\uff0c\u51cf\u5c11\u7ebf\u7a0b\u7684\u521b\u5efa\u548c\u9500\u6bc1\u5f00\u9500\uff0c\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u961f\u5217\u4e0e\u7ebf\u7a0b\u7684\u5173\u7cfb<\/strong>\uff1a<\/p>\n<ul>\n<li><strong>\u4efb\u52a1\u8c03\u5ea6<\/strong>\uff1a\u5f53\u4f60\u5c06\u4efb\u52a1\u63d0\u4ea4\u5230\u961f\u5217\u65f6\uff0cGCD \u4f1a\u51b3\u5b9a\u4f7f\u7528\u54ea\u4e2a\u7ebf\u7a0b\u6765\u6267\u884c\u8fd9\u4e2a\u4efb\u52a1\u3002\u5177\u4f53\u6765\u8bf4\uff0cGCD \u4ece\u7ebf\u7a0b\u6c60\u4e2d\u53d6\u51fa\u4e00\u4e2a\u7ebf\u7a0b\uff08\u6216\u8005\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b\uff0c\u53d6\u51b3\u4e8e\u8d1f\u8f7d\u548c\u9700\u6c42\uff09\u6765\u6267\u884c\u961f\u5217\u4e2d\u7684\u4efb\u52a1\u3002<\/li>\n<li><strong>\u7ebf\u7a0b\u7ba1\u7406<\/strong>\uff1aGCD \u4f1a\u81ea\u52a8\u7ba1\u7406\u7ebf\u7a0b\u7684\u751f\u547d\u5468\u671f\u3002\u5f00\u53d1\u8005\u4e0d\u9700\u8981\u663e\u5f0f\u5730\u521b\u5efa\u3001\u9500\u6bc1\u6216\u7ba1\u7406\u7ebf\u7a0b\uff0cGCD \u4f1a\u6839\u636e\u4efb\u52a1\u91cf\u548c\u7cfb\u7edf\u8d1f\u8f7d\u6765\u8c03\u6574\u7ebf\u7a0b\u6c60\u7684\u5927\u5c0f\u3002<\/li>\n<li><strong>\u5e76\u884c\u961f\u5217<\/strong>\uff1a\u5728\u5e76\u884c\u961f\u5217\u4e2d\uff0c\u591a\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u540c\u65f6\u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u4efb\u52a1\u5e76\u6267\u884c\u3002\u8fd9\u5141\u8bb8\u591a\u4e2a\u4efb\u52a1\u5e76\u53d1\u6267\u884c\uff0c\u63d0\u5347\u4e86\u5904\u7406\u6548\u7387\u3002<\/li>\n<li><strong>\u4e32\u884c\u961f\u5217<\/strong>\uff1a\u5728\u4e32\u884c\u961f\u5217\u4e2d\uff0c\u6240\u6709\u4efb\u52a1\u90fd\u5728\u4e00\u4e2a\u7ebf\u7a0b\u4e0a\u6309\u987a\u5e8f\u6267\u884c\u3002\u7531\u4e8e\u6bcf\u6b21\u53ea\u6709\u4e00\u4e2a\u4efb\u52a1\u88ab\u6267\u884c\uff0c\u4e32\u884c\u961f\u5217\u5b9e\u9645\u4e0a\u4e0d\u4f1a\u521b\u5efa\u591a\u4e2a\u7ebf\u7a0b\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u7ebf\u7a0b\u6c60\u7684\u5de5\u4f5c\u673a\u5236<\/strong>\uff1a<\/p>\n<ul>\n<li><strong>\u521b\u5efa\u7ebf\u7a0b<\/strong>\uff1a\u5f53\u6709\u4efb\u52a1\u9700\u8981\u6267\u884c\u65f6\uff0c\u5982\u679c\u73b0\u6709\u7684\u7ebf\u7a0b\u6c60\u4e2d\u6ca1\u6709\u7a7a\u95f2\u7ebf\u7a0b\uff0cGCD \u4f1a\u521b\u5efa\u65b0\u7684\u7ebf\u7a0b\u6765\u5904\u7406\u4efb\u52a1\u3002<\/li>\n<li><strong>\u56de\u6536\u7ebf\u7a0b<\/strong>\uff1a\u5f53\u7ebf\u7a0b\u5b8c\u6210\u4efb\u52a1\u540e\uff0c\u5b83\u4e0d\u4f1a\u7acb\u5373\u9500\u6bc1\uff0c\u800c\u662f\u8fd4\u56de\u5230\u7ebf\u7a0b\u6c60\u4e2d\u4ee5\u4fbf\u91cd\u590d\u4f7f\u7528\u3002\u7ebf\u7a0b\u6c60\u4f1a\u6839\u636e\u4efb\u52a1\u91cf\u548c\u7cfb\u7edf\u8d44\u6e90\u52a8\u6001\u8c03\u6574\u7ebf\u7a0b\u7684\u6570\u91cf\u3002<\/li>\n<li><strong>\u8d1f\u8f7d\u5747\u8861<\/strong>\uff1aGCD \u901a\u8fc7\u52a8\u6001\u8c03\u6574\u7ebf\u7a0b\u6c60\u5927\u5c0f\u6765\u5e73\u8861\u8d1f\u8f7d\uff0c\u4ece\u800c\u6709\u6548\u5730\u5229\u7528\u7cfb\u7edf\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u603b\u7684\u6765\u8bf4\uff0c\u961f\u5217\u548c\u7ebf\u7a0b\u5728 GCD \u4e2d\u7684\u5173\u7cfb\u662f\u4efb\u52a1\u8c03\u5ea6\u548c\u6267\u884c\u7684\u57fa\u7840\u3002\u961f\u5217\u8d1f\u8d23\u7ba1\u7406\u4efb\u52a1\u7684\u8c03\u5ea6\u987a\u5e8f\u548c\u6267\u884c\u6a21\u5f0f\uff0c\u800c\u7ebf\u7a0b\u6c60\u8d1f\u8d23\u5b9e\u9645\u7684\u4efb\u52a1\u6267\u884c\u548c\u7ebf\u7a0b\u7ba1\u7406\u3002GCD \u901a\u8fc7\u8fd9\u79cd\u673a\u5236\u63d0\u4f9b\u4e86\u9ad8\u6548\u3001\u6613\u7528\u7684\u5e76\u53d1\u7f16\u7a0b\u6a21\u578b\u3002<\/p>\n<h2>\u95ee\uff1aiOS \u7684 GCD \u662f\u4e0d\u662f\u4e00\u79cd\u7ebf\u7a0b\u6c60\uff0c\u4ed6\u7684\u8bbe\u8ba1\u8981\u70b9\u662f\u4ec0\u4e48<\/h2>\n<p>\u662f\u7684\uff0ciOS \u7684 Grand Central Dispatch (GCD) \u53ef\u4ee5\u88ab\u89c6\u4e3a\u4e00\u79cd\u7ebf\u7a0b\u6c60\uff0c\u5b83\u662f Apple \u63d0\u4f9b\u7684\u4e00\u4e2a\u7528\u4e8e\u7b80\u5316\u5e76\u53d1\u7f16\u7a0b\u7684 API\u3002GCD \u65e8\u5728\u901a\u8fc7\u63d0\u4f9b\u9ad8\u6548\u7684\u7ebf\u7a0b\u7ba1\u7406\u673a\u5236\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u65b9\u4fbf\u5730\u5904\u7406\u5e76\u53d1\u4efb\u52a1\u3002\u5176\u8bbe\u8ba1\u8981\u70b9\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u4efb\u52a1\u961f\u5217<\/strong>\uff1aGCD \u4e3b\u8981\u901a\u8fc7\u201c\u961f\u5217\u201d\uff08Queues\uff09\u6765\u7ba1\u7406\u4efb\u52a1\u3002\u4efb\u52a1\u88ab\u63d0\u4ea4\u5230\u961f\u5217\u4e2d\uff0cGCD \u4f1a\u8d1f\u8d23\u8c03\u5ea6\u8fd9\u4e9b\u4efb\u52a1\u7684\u6267\u884c\u3002\u961f\u5217\u6709\u4e24\u79cd\u4e3b\u8981\u7c7b\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u4e32\u884c\u961f\u5217<\/strong>\uff1a\u4efb\u52a1\u6309\u63d0\u4ea4\u987a\u5e8f\u4f9d\u6b21\u6267\u884c\u3002<\/li>\n<li><strong>\u5e76\u884c\u961f\u5217<\/strong>\uff1a\u4efb\u52a1\u53ef\u4ee5\u5e76\u53d1\u6267\u884c\uff0c\u961f\u5217\u4e2d\u7684\u4efb\u52a1\u987a\u5e8f\u4e0d\u4e00\u5b9a\u4e0e\u63d0\u4ea4\u987a\u5e8f\u76f8\u540c\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u5168\u5c40\u5e76\u884c\u961f\u5217<\/strong>\uff1aGCD \u63d0\u4f9b\u4e86\u4e00\u4e9b\u5168\u5c40\u5e76\u884c\u961f\u5217\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u5c06\u4efb\u52a1\u63d0\u4ea4\u5230\u8fd9\u4e9b\u961f\u5217\u4e2d\uff0cGCD \u4f1a\u81ea\u52a8\u7ba1\u7406\u7ebf\u7a0b\u7684\u521b\u5efa\u548c\u9500\u6bc1\u3002\u8fd9\u4e9b\u5168\u5c40\u961f\u5217\u6709\u4e0d\u540c\u7684\u4f18\u5148\u7ea7\uff08\u5982\u9ed8\u8ba4\u3001\u7528\u6237\u4e92\u52a8\u3001\u540e\u53f0\u7b49\uff09\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u6839\u636e\u4efb\u52a1\u7684\u4f18\u5148\u7ea7\u9009\u62e9\u9002\u5f53\u7684\u961f\u5217\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4e3b\u961f\u5217<\/strong>\uff1a\u4e3b\u961f\u5217\u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u4e32\u884c\u961f\u5217\uff0c\u7528\u4e8e\u5728\u4e3b\u7ebf\u7a0b\u4e0a\u6267\u884c\u4efb\u52a1\u3002\u6240\u6709\u7684 UI \u66f4\u65b0\u90fd\u5fc5\u987b\u5728\u4e3b\u7ebf\u7a0b\u4e0a\u8fdb\u884c\uff0c\u56e0\u6b64\u4e3b\u961f\u5217\u5728\u5904\u7406 UI \u76f8\u5173\u7684\u4efb\u52a1\u65f6\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4efb\u52a1\u8c03\u5ea6<\/strong>\uff1aGCD \u901a\u8fc7\u5c06\u4efb\u52a1\u8c03\u5ea6\u5230\u9002\u5f53\u7684\u7ebf\u7a0b\u6216\u7ebf\u7a0b\u6c60\u6765\u63d0\u9ad8\u6027\u80fd\u3002\u5b83\u4f7f\u7528\u4e86\u4e00\u4e2a\u57fa\u4e8e\u4efb\u52a1\u7684\u8c03\u5ea6\u6a21\u578b\uff0c\u81ea\u52a8\u7ba1\u7406\u7ebf\u7a0b\u7684\u751f\u547d\u5468\u671f\uff0c\u51cf\u5c11\u4e86\u5f00\u53d1\u8005\u5728\u5904\u7406\u7ebf\u7a0b\u521b\u5efa\u548c\u9500\u6bc1\u65b9\u9762\u7684\u590d\u6742\u6027\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5f02\u6b65\u548c\u540c\u6b65\u6267\u884c<\/strong>\uff1a<\/p>\n<ul>\n<li><strong>\u5f02\u6b65\u6267\u884c<\/strong>\uff1a\u4efb\u52a1\u4f1a\u88ab\u63d0\u4ea4\u5230\u961f\u5217\u540e\u7acb\u5373\u8fd4\u56de\uff0cGCD \u4f1a\u5728\u540e\u53f0\u7ebf\u7a0b\u4e2d\u5f02\u6b65\u6267\u884c\u4efb\u52a1\uff0c\u907f\u514d\u4e86\u963b\u585e\u8c03\u7528\u7ebf\u7a0b\u3002<\/li>\n<li><strong>\u540c\u6b65\u6267\u884c<\/strong>\uff1a\u4efb\u52a1\u4f1a\u5728\u5f53\u524d\u7ebf\u7a0b\u4e2d\u6267\u884c\uff0c\u76f4\u5230\u4efb\u52a1\u5b8c\u6210\u3002\u8fd9\u4f1a\u963b\u585e\u8c03\u7528\u7ebf\u7a0b\uff0c\u76f4\u5230\u4efb\u52a1\u6267\u884c\u5b8c\u6bd5\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u4efb\u52a1\u4f18\u5148\u7ea7<\/strong>\uff1aGCD \u652f\u6301\u4efb\u52a1\u4f18\u5148\u7ea7\u7684\u8bbe\u7f6e\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e0d\u540c\u7684\u5168\u5c40\u961f\u5217\u6765\u8bbe\u7f6e\u4e0d\u540c\u7684\u4efb\u52a1\u4f18\u5148\u7ea7\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4f9d\u8d56\u5173\u7cfb<\/strong>\uff1aGCD \u5141\u8bb8\u4efb\u52a1\u4e4b\u95f4\u5b9a\u4e49\u4f9d\u8d56\u5173\u7cfb\uff0c\u901a\u8fc7 <code>dispatch_group<\/code> \u53ef\u4ee5\u5c06\u591a\u4e2a\u4efb\u52a1\u7ec4\u7ec7\u6210\u4e00\u4e2a\u7ec4\uff0c\u5e76\u5728\u7ec4\u4e2d\u6240\u6709\u4efb\u52a1\u5b8c\u6210\u540e\u6267\u884c\u7279\u5b9a\u64cd\u4f5c\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u901a\u8fc7\u8fd9\u4e9b\u8bbe\u8ba1\u8981\u70b9\uff0cGCD \u63d0\u4f9b\u4e86\u4e00\u4e2a\u9ad8\u6548\u4e14\u6613\u4e8e\u4f7f\u7528\u7684\u5e76\u53d1\u7f16\u7a0b\u6a21\u578b\uff0c\u4f7f\u5f00\u53d1\u8005\u80fd\u591f\u66f4\u8f7b\u677e\u5730\u521b\u5efa\u9ad8\u6027\u80fd\u7684\u5e76\u53d1\u5e94\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u975e\u539f\u521b\u3001ChatGPT \u95ee\u7b54\u751f\u6210 \u5728 Grand Central Dispatch (GCD) \u4e2d\uff0c\u961f\u5217\u548c\u7ebf\u7a0b&#8230; <\/p>\n<div class=\"read-more navbutton\"><a href=\"https:\/\/t.n-years.com\/?p=6432\">\u9605\u8bfb\u66f4\u591a<i class=\"fa fa-angle-double-right\"><\/i><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[135],"tags":[140,67,141],"class_list":["post-6432","post","type-post","status-publish","format-standard","hentry","category-135","tag-gcd","tag-swift","tag-141"],"_links":{"self":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts\/6432","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6432"}],"version-history":[{"count":2,"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts\/6432\/revisions"}],"predecessor-version":[{"id":6434,"href":"https:\/\/t.n-years.com\/index.php?rest_route=\/wp\/v2\/posts\/6432\/revisions\/6434"}],"wp:attachment":[{"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/t.n-years.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}