{"id":3895,"date":"2025-06-01T10:56:55","date_gmt":"2025-06-05T03:44:54","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=3895"},"modified":"2025-06-05T10:56:55","modified_gmt":"2025-06-05T03:44:54","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8swift%e4%b8%ad%e7%9a%84%e5%b9%b6%e5%8f%91%e7%bc%96%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8swift%e4%b8%ad%e7%9a%84%e5%b9%b6%e5%8f%91%e7%bc%96%e7%a8%8b\/","title":{"rendered":"\u5168\u9762\u638c\u63e1 Swift \u7684\u5e76\u53d1\u7f16\u7a0b\uff1aGCD \u548c OperationQueue \u7684\u6700\u65b0\u5be6\u8e10"},"content":{"rendered":"

<\/p>\n

\u5168\u9762\u638c\u63e1 Swift \u7684\u5e76\u53d1\u7f16\u7a0b\uff1aGCD \u548c OperationQueue \u7684\u6700\u65b0\u5be6\u8e10<\/h1>\n

Swift \u662f\u4e00\u7a2e\u73fe\u4ee3\u5316\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u5e76\u53d1\u7de8\u7a0b\u80fd\u529b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728 Swift \u4e2d\u6709\u6548\u4f7f\u7528 Grand Central Dispatch\uff08GCD\uff09\u548c OperationQueue \u4f86\u5be6\u73fe\u5e76\u767c\u7a0b\u5f0f\uff0c\u4e26\u63d0\u4f9b 2025 \u5e74\u6700\u65b0\u7684\u8a9e\u6cd5\u8207\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n

\u4ec0\u9ebc\u662f Grand Central Dispatch\uff08GCD\uff09\uff1f<\/h2>\n

Grand Central Dispatch\uff08GCD\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u7de8\u5beb\u5e76\u767c\u7a0b\u5f0f\u7684\u6280\u8853\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5c07\u4efb\u52d9\u5206\u914d\u7d66\u591a\u500b\u57f7\u884c\u7dd2\uff0c\u4ee5\u63d0\u9ad8\u7a0b\u5f0f\u7684\u6548\u7387\u3002GCD \u4e0d\u50c5\u7c21\u5316\u4e86\u591a\u7dda\u7a0b\u958b\u767c\u7684\u904e\u7a0b\uff0c\u9084\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406\u8cc7\u6e90\u548c\u57f7\u884c\u7dd2\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u4f7f\u7528 GCD \u7684\u57fa\u672c\u7bc4\u4f8b\uff1a<\/p>\n

“`swift
\nimport Foundation<\/p>\n

let queue = DispatchQueue.global(qos: .background)<\/p>\n

queue.async {
\n \/\/ \u5728\u80cc\u666f\u57f7\u884c\u7dd2\u57f7\u884c\u8017\u6642\u4efb\u52d9
\n let result = performTimeConsumingTask()
\n print(“\u4efb\u52d9\u7d50\u679c\uff1a\\(result)”)
\n}<\/p>\n

func performTimeConsumingTask() -> String {
\n \/\/ \u6a21\u64ec\u8017\u6642\u4efb\u52d9
\n sleep(2)
\n return “\u4efb\u52d9\u5b8c\u6210”
\n}
\n“`<\/p>\n

\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u80cc\u666f\u968a\u5217\uff0c\u4e26\u5728\u5176\u4e2d\u57f7\u884c\u4e00\u500b\u8017\u6642\u7684\u4efb\u52d9\u3002\u4f7f\u7528 GCD\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u7ba1\u7406\u4e26\u767c\u64cd\u4f5c\uff0c\u800c\u4e0d\u9700\u8981\u76f4\u63a5\u8655\u7406\u57f7\u884c\u7dd2\u3002<\/p>\n

\u6df1\u5165\u4e86\u89e3 OperationQueue<\/h2>\n

OperationQueue \u662f Swift \u4e2d\u53e6\u4e00\u500b\u5f37\u5927\u7684\u5e76\u767c\u7de8\u7a0b\u5de5\u5177\u3002\u8207 GCD \u4e0d\u540c\uff0cOperationQueue \u63d0\u4f9b\u4e86\u4e00\u500b\u66f4\u9ad8\u5c64\u6b21\u7684\u62bd\u8c61\uff0c\u4f7f\u958b\u767c\u8005\u80fd\u5920\u66f4\u9748\u6d3b\u5730\u7ba1\u7406\u4efb\u52d9\u7684\u57f7\u884c\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 OperationQueue \u7684\u7bc4\u4f8b\uff1a<\/p>\n

“`swift
\nimport Foundation<\/p>\n

let operationQueue = OperationQueue()<\/p>\n

let operation = BlockOperation {
\n let result = performAnotherTask()
\n print(“\u53e6\u4e00\u500b\u4efb\u52d9\u7d50\u679c\uff1a\\(result)”)
\n}<\/p>\n

operationQueue.addOperation(operation)<\/p>\n

func performAnotherTask() -> String {
\n \/\/ \u6a21\u64ec\u8017\u6642\u4efb\u52d9
\n sleep(2)
\n return “\u53e6\u4e00\u500b\u4efb\u52d9\u5b8c\u6210”
\n}
\n“`<\/p>\n

\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u64cd\u4f5c\u968a\u5217\uff0c\u4e26\u5c07\u4e00\u500b\u4efb\u52d9\u6dfb\u52a0\u5230\u968a\u5217\u4e2d\u3002OperationQueue \u5141\u8a31\u958b\u767c\u8005\u8a2d\u7f6e\u4efb\u52d9\u4e4b\u9593\u7684\u4f9d\u8cf4\u95dc\u4fc2\u3001\u512a\u5148\u7d1a\u548c\u5176\u4ed6\u63a7\u5236\u6a5f\u5236\uff0c\u4f7f\u5176\u5728\u8907\u96dc\u7684\u4e26\u767c\u4efb\u52d9\u4e2d\u66f4\u70ba\u5f37\u5927\u3002<\/p>\n

\u932f\u8aa4\u6392\u9664\u8207\u6700\u4f73\u5be6\u8e10<\/h2>\n

\u5728\u4f7f\u7528 GCD \u548c OperationQueue \u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u7684\u932f\u8aa4\uff0c\u4f8b\u5982\uff1a<\/p>\n

– **\u6b7b\u9396\uff08Deadlock\uff09**\uff1a\u78ba\u4fdd\u5728\u4e3b\u7dda\u7a0b\u4e0a\u57f7\u884c UI \u66f4\u65b0\u4efb\u52d9\uff0c\u907f\u514d\u5728\u975e\u4e3b\u7dda\u7a0b\u4e0a\u66f4\u65b0 UI\u3002
\n– **\u8cc7\u6e90\u7af6\u722d\uff08Race Conditions\uff09**\uff1a\u4f7f\u7528\u9069\u7576\u7684\u540c\u6b65\u6a5f\u5236\uff0c\u5982 DispatchSemaphore \u6216 NSLock\uff0c\u4f86\u4fdd\u8b77\u5171\u4eab\u8cc7\u6e90\u3002
\n– **\u6027\u80fd\u554f\u984c**\uff1a\u907f\u514d\u5728\u57f7\u884c\u7dd2\u4e0a\u57f7\u884c\u904e\u591a\u4efb\u52d9\uff0c\u5408\u7406\u5283\u5206\u4efb\u52d9\u4ee5\u63d0\u9ad8\u57f7\u884c\u6548\u7387\u3002<\/p>\n

\u5ef6\u4f38\u61c9\u7528<\/h2>\n

– **\u7db2\u7d61\u8acb\u6c42**\uff1a\u4f7f\u7528 GCD \u6216 OperationQueue \u7ba1\u7406\u591a\u500b\u7db2\u7d61\u8acb\u6c42\u4ee5\u63d0\u9ad8\u61c9\u7528\u6027\u80fd\u3002
\n– **\u6578\u64da\u8655\u7406**\uff1a\u5728\u80cc\u666f\u57f7\u884c\u7dd2\u4e2d\u9032\u884c\u6578\u64da\u5206\u6790\u6216\u8655\u7406\uff0c\u78ba\u4fdd\u61c9\u7528\u754c\u9762\u4e0d\u6703\u56e0\u70ba\u8017\u6642\u64cd\u4f5c\u800c\u8b8a\u5f97\u5361\u9813\u3002
\n– **\u52d5\u756b\u6548\u679c**\uff1a\u5c07\u52d5\u756b\u64cd\u4f5c\u653e\u5728\u4e3b\u7dda\u7a0b\u4e2d\uff0c\u540c\u6642\u4f7f\u7528 GCD \u9032\u884c\u5176\u4ed6\u4efb\u52d9\u7684\u4e26\u767c\u8655\u7406\u3002<\/p>\n

\u7d50\u8ad6<\/h2>\n

\u672c\u6587\u4ecb\u7d39\u4e86 Swift \u4e2d\u7684\u5e76\u53d1\u7de8\u7a0b\uff0c\u5305\u62ec GCD \u548c OperationQueue \u7684\u6700\u65b0\u5be6\u8e10\u3002\u901a\u904e\u6709\u6548\u5730\u4f7f\u7528\u9019\u4e9b\u5de5\u5177\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u63d0\u9ad8\u61c9\u7528\u7684\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\uff0c\u4e26\u5728 2025 \u5e74\u7e7c\u7e8c\u4fdd\u6301\u7af6\u722d\u529b\u3002<\/p>\n

Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n

**Q1: GCD \u548c OperationQueue \u6709\u4ec0\u9ebc\u5340\u5225\uff1f**
\nA1: GCD \u662f\u57fa\u65bc C \u8a9e\u8a00\u7684\u5e95\u5c64 API\uff0c\u63d0\u4f9b\u4e86\u7c21\u55ae\u7684\u4e26\u767c\u7de8\u7a0b\u65b9\u5f0f\uff0c\u800c OperationQueue \u5247\u662f\u4e00\u500b\u57fa\u65bc\u5c0d\u8c61\u7684\u9ad8\u5c64 API\uff0c\u63d0\u4f9b\u66f4\u591a\u63a7\u5236\u548c\u7ba1\u7406\u529f\u80fd\u3002<\/p>\n

**Q2: \u5982\u4f55\u9078\u64c7\u4f7f\u7528 GCD \u9084\u662f OperationQueue\uff1f**
\nA2: \u5982\u679c\u60a8\u9700\u8981\u66f4\u7c21\u55ae\u7684\u4e26\u767c\u8655\u7406\uff0cGCD \u662f\u4e0d\u932f\u7684\u9078\u64c7\uff1b\u82e5\u9700\u8981\u66f4\u9ad8\u5c64\u6b21\u7684\u63a7\u5236\u548c\u8907\u96dc\u4efb\u52d9\u7ba1\u7406\uff0c\u5247\u61c9\u8003\u616e\u4f7f\u7528 OperationQueue\u3002<\/p>\n

**Q3: \u5728\u4f7f\u7528 GCD \u548c OperationQueue \u6642\uff0c\u6709\u54ea\u4e9b\u6700\u4f73\u5be6\u8e10\uff1f**
\nA3: \u78ba\u4fdd\u5728\u4e3b\u7dda\u7a0b\u4e2d\u57f7\u884c UI \u66f4\u65b0\uff0c\u9069\u6642\u4f7f\u7528\u540c\u6b65\u6a5f\u5236\u4f86\u907f\u514d\u8cc7\u6e90\u7af6\u722d\uff0c\u4e26\u5408\u7406\u5283\u5206\u4efb\u52d9\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n

—<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528Swift\u4e2d\u7684\u5e76\u53d1\u7f16\u7a0b\uff0c\u5305\u62ecGCD\u548cOperationQueue\u7b49\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u5229\u7528\u591a\u500b\u6838\u5fc3\u4f86\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[174,5],"tags":[173,9],"class_list":["post-3895","post","type-post","status-publish","format-standard","hentry","category-ios","category-swift","tag-ios","tag-swift"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-10P","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3895","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=3895"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3895\/revisions"}],"predecessor-version":[{"id":3896,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3895\/revisions\/3896"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=3895"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3895"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3895"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}