{"id":206694,"date":"2025-06-12T13:43:12","date_gmt":"2025-06-12T05:43:12","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206694\/"},"modified":"2025-06-12T13:43:12","modified_gmt":"2025-06-12T05:43:12","slug":"go-%e4%b8%ad-sync-mutex-%e9%94%81%e5%a4%b1%e6%95%88%e4%b9%8b%e8%b0%9c%ef%bc%9a%e4%b8%ba%e4%bb%80%e4%b9%88%e5%9c%a8%e5%b9%b6%e5%8f%91%e8%ae%bf%e9%97%ae%e5%85%b1%e4%ba%ab%e5%8f%98%e9%87%8f%e6%97%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206694\/","title":{"rendered":"Go \u4e2d sync.Mutex \u9501\u5931\u6548\u4e4b\u8c1c\uff1a\u4e3a\u4ec0\u4e48\u5728\u5e76\u53d1\u8bbf\u95ee\u5171\u4eab\u53d8\u91cf\u65f6\uff0c\u4f7f\u7528 sync.Mutex \u5e76\u4e0d\u80fd\u4fdd\u8bc1\u7ed3\u679c\u6b63\u786e\uff1f"},"content":{"rendered":"

\u5728GOLANG\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929GOLANG\u5c31\u6574\u7406\u5206\u4eab\u300aGo \u4e2d sync.Mutex \u9501\u5931\u6548\u4e4b\u8c1c\uff1a\u4e3a\u4ec0\u4e48\u5728\u5e76\u53d1\u8bbf\u95ee\u5171\u4eab\u53d8\u91cf\u65f6\uff0c\u4f7f\u7528 sync.Mutex \u5e76\u4e0d\u80fd\u4fdd\u8bc1\u7ed3\u679c\u6b63\u786e\uff1f\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002,
\n,
\nsync.mutex \u9501\u5931\u6548\u4e4b\u8c1c<\/strong>,\u5728\u63a2\u7d22 go \u4e2d\u5e76\u53d1\u7684 sync.mutex \u65f6\uff0c\u4e00\u4f4d\u65b0\u624b\u9047\u5230\u4e86\u4ee4\u4eba\u56f0\u60d1\u7684\u95ee\u9898\u3002\u4ed6\u4eec\u7f16\u5199\u4e86\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u76ee\u6807\u662f\u4f7f\u7528 1000 \u4e2a\u534f\u7a0b\u5bf9\u4e00\u4e2a\u53d8\u91cf\u52a0 1000\uff0c\u6bcf\u4e2a\u534f\u7a0b +1\uff0c\u5e76\u671f\u5f85\u6700\u7ec8\u7ed3\u679c\u4e3a 1000\u3002,\u7136\u800c\uff0c\u4ee3\u7801\u6267\u884c\u540e\uff0c\u5374\u5f97\u5230\u4e86\u968f\u673a\u7684\u7ed3\u679c\uff0c\u8ba9\u65b0\u624b\u5fc3\u7070\u610f\u51b7\u3002\u95ee\u9898\u51fa\u5728\u54ea\u91cc\uff1f,
\n\u95ee\u9898\u4ee3\u7801\u5206\u6790<\/strong>,\u65b0\u624b\u4f7f\u7528\u7684 sync.mutex \u65e8\u5728\u63a7\u5236\u5bf9\u5171\u4eab\u53d8\u91cf a \u7684\u8bbf\u95ee\uff0c\u786e\u4fdd\u540c\u4e00\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u534f\u7a0b\u64cd\u4f5c\u5b83\u3002\u4f46\u662f\uff0c\u95ee\u9898\u5728\u4e8e locker.lock() \u548c locker.unlock() \u88ab\u653e\u7f6e\u5728\u533f\u540d\u51fd\u6570\u5185\u90e8\uff0c\u800c\u4e0d\u662ffor\u5faa\u73af\u4e2d\u3002,
\n\u89e3\u51b3\u65b9\u6848<\/strong>,\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ea\u9700\u5c06 locker.lock() \u548c locker.unlock() \u79fb\u52a8\u5230 for \u5faa\u73af\u4e2d\u3002\u8fd9\u6837\uff0c\u6bcf\u4e2a\u534f\u7a0b\u90fd\u4f1a\u4f7f\u7528\u81ea\u5df1\u7684 locker \u5bf9\u8c61\uff0c\u4ece\u800c\u5b9e\u73b0\u6b63\u786e\u7684\u9501\u5b9a\u673a\u5236\u3002,\u53e6\u4e00\u79cd\u9009\u62e9\u662f\u4f7f\u7528 atomic.addint64() \u51fd\u6570\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u7ebf\u7a0b\u5b89\u5168\u7684\u539f\u5b50\u64cd\u4f5c\uff0c\u53ef\u4ee5\u76f4\u63a5\u5bf9\u53d8\u91cf\u8fdb\u884c\u52a0\u51cf\u3002,\u901a\u8fc7\u91c7\u7528\u8fd9\u4e9b\u89e3\u51b3\u65b9\u6848\uff0c\u65b0\u624b\u5e94\u8be5\u80fd\u591f\u83b7\u5f97\u9884\u671f\u7684\u7ed3\u679c\uff1a\u53d8\u91cf a \u7684\u6700\u7ec8\u503c\u4e3a 1000\u3002,\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300aGo \u4e2d sync.Mutex \u9501\u5931\u6548\u4e4b\u8c1c\uff1a\u4e3a\u4ec0\u4e48\u5728\u5e76\u53d1\u8bbf\u95ee\u5171\u4eab\u53d8\u91cf\u65f6\uff0c\u4f7f\u7528 sync.Mutex \u5e76\u4e0d\u80fd\u4fdd\u8bc1\u7ed3\u679c\u6b63\u786e\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01,sync.mutex \u9501\u5931\u6548\u4e4b\u8c1c,\u5728GOLANG\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929GOLANG\u5c31\u6574\u7406\u5206\u4eab\u300aGo \u4e2d sync.Mutex \u9501\u5931\u6548\u4e4b\u8c1c\uff1a\u4e3a\u4ec0\u4e48\u5728\u5e76\u53d1\u8bbf\u95ee\u5171\u4eab\u53d8\u91cf\u65f6\uff0c\u4f7f\u7528 sync.Mutex \u5e76\u4e0d\u80fd\u4fdd\u8bc1\u7ed3\u679c\u6b63\u786e\uff1f\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> Go \u4e2d sync.Mutex \u9501\u5931\u6548\u4e4b\u8c1c\uff1a\u4e3a\u4ec0\u4e48\u5728\u5e76\u53d1\u8bbf\u95ee\u5171\u4eab\u53d8\u91cf\u65f6\uff0c\u4f7f\u7528 sync.Mutex \u5e76\u4e0d\u80fd\u4fdd\u8bc1\u7ed3\u679c\u6b63\u786e\uff1f<\/span><\/p>\n

Go \u4e2d sync.Mutex \u9501\u5931\u6548\u4e4b\u8c1c\uff1a\u4e3a\u4ec0\u4e48\u5728\u5e76\u53d1\u8bbf\u95ee\u5171\u4eab\u53d8\u91cf\u65f6\uff0c\u4f7f\u7528 sync.Mutex \u5e76\u4e0d\u80fd\u4fdd\u8bc1\u7ed3\u679c\u6b63\u786e\uff1f<\/h1>\n

2024-11-19 16:55:16<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5728GOLANG\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929GOLANG\u5c31\u6574\u7406\u5206\u4eab\u300aGo \u4e2d sync.Mutex \u9501\u5931\u6548\u4e4b\u8c1c\uff1a\u4e3a\u4ec0\u4e48\u5728\u5e76\u53d1\u8bbf\u95ee\u5171\u4eab\u53d8\u91cf\u65f6\uff0c\u4f7f\u7528 sync.Mutex \u5e76\u4e0d\u80fd\u4fdd\u8bc1\u7ed3\u679c\u6b63\u786e\uff1f\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n

<\/p>\n

sync.mutex \u9501\u5931\u6548\u4e4b\u8c1c<\/strong><\/p>\n

\u5728\u63a2\u7d22 go \u4e2d\u5e76\u53d1\u7684 sync.mutex \u65f6\uff0c\u4e00\u4f4d\u65b0\u624b\u9047\u5230\u4e86\u4ee4\u4eba\u56f0\u60d1\u7684\u95ee\u9898\u3002\u4ed6\u4eec\u7f16\u5199\u4e86\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u76ee\u6807\u662f\u4f7f\u7528 1000 \u4e2a\u534f\u7a0b\u5bf9\u4e00\u4e2a\u53d8\u91cf\u52a0 1000\uff0c\u6bcf\u4e2a\u534f\u7a0b +1\uff0c\u5e76\u671f\u5f85\u6700\u7ec8\u7ed3\u679c\u4e3a 1000\u3002<\/p>\n

\u7136\u800c\uff0c\u4ee3\u7801\u6267\u884c\u540e\uff0c\u5374\u5f97\u5230\u4e86\u968f\u673a\u7684\u7ed3\u679c\uff0c\u8ba9\u65b0\u624b\u5fc3\u7070\u610f\u51b7\u3002\u95ee\u9898\u51fa\u5728\u54ea\u91cc\uff1f<\/p>\n

\u95ee\u9898\u4ee3\u7801\u5206\u6790<\/strong><\/p>\n

var a = 0\nvar wg sync.waitgroup\n\nfor i := 0; i < 1000; i++ {\n    wg.add(1)\n\n    go func() {\n        defer wg.done()\n        var locker sync.mutex\n        locker.lock()\n        defer locker.unlock()\n        a++\n        fmt.println(\"a \u7684\u503c\u4e3a\uff1a\", a)\n    }()\n}<\/pre>\n
\u65b0\u624b\u4f7f\u7528\u7684 sync.mutex \u65e8\u5728\u63a7\u5236\u5bf9\u5171\u4eab\u53d8\u91cf a \u7684\u8bbf\u95ee\uff0c\u786e\u4fdd\u540c\u4e00\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u534f\u7a0b\u64cd\u4f5c\u5b83\u3002\u4f46\u662f\uff0c\u95ee\u9898\u5728\u4e8e locker.lock() \u548c locker.unlock() \u88ab\u653e\u7f6e\u5728\u533f\u540d\u51fd\u6570\u5185\u90e8\uff0c\u800c\u4e0d\u662ffor\u5faa\u73af\u4e2d\u3002<\/p>\n
\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n
\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ea\u9700\u5c06 locker.lock() \u548c locker.unlock() \u79fb\u52a8\u5230 for \u5faa\u73af\u4e2d\u3002\u8fd9\u6837\uff0c\u6bcf\u4e2a\u534f\u7a0b\u90fd\u4f1a\u4f7f\u7528\u81ea\u5df1\u7684 locker \u5bf9\u8c61\uff0c\u4ece\u800c\u5b9e\u73b0\u6b63\u786e\u7684\u9501\u5b9a\u673a\u5236\u3002<\/p>\n
var locker sync.mutex\n\nfor i := 0; i < 1000; i++ {\n    wg.add(1)\n\n    go func() {\n        defer wg.done()\n        locker.lock()\n        defer locker.unlock()\n        a++\n        fmt.println(\"a \u7684\u503c\u4e3a\uff1a\", a)\n    }()\n}<\/pre>\n
\u53e6\u4e00\u79cd\u9009\u62e9\u662f\u4f7f\u7528 atomic.addint64() \u51fd\u6570\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u7ebf\u7a0b\u5b89\u5168\u7684\u539f\u5b50\u64cd\u4f5c\uff0c\u53ef\u4ee5\u76f4\u63a5\u5bf9\u53d8\u91cf\u8fdb\u884c\u52a0\u51cf\u3002<\/p>\n
func hasLockAndWait() {\n    var a int64 \/\/ \u4f7f\u7528 int64 \u4ee5\u5339\u914d atomic.AddInt64()\n\n    for i := 0; i < 1000; i++ {\n        wg.Add(1)\n\n        go func() {\n            defer wg.Done()\n            atomic.AddInt64(&a, 1)\n            fmt.Println(\"a \u7684\u503c\u4e3a\uff1a\", a)\n        }()\n    }\n\n    wg.Wait()\n    fmt.Println(\"a \u7684\u6700\u7ec8\u503c\u4e3a\uff1a\", a)\n}<\/pre>\n
\u901a\u8fc7\u91c7\u7528\u8fd9\u4e9b\u89e3\u51b3\u65b9\u6848\uff0c\u65b0\u624b\u5e94\u8be5\u80fd\u591f\u83b7\u5f97\u9884\u671f\u7684\u7ed3\u679c\uff1a\u53d8\u91cf a \u7684\u6700\u7ec8\u503c\u4e3a 1000\u3002<\/p>\n
\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300aGo \u4e2d sync.Mutex \u9501\u5931\u6548\u4e4b\u8c1c\uff1a\u4e3a\u4ec0\u4e48\u5728\u5e76\u53d1\u8bbf\u95ee\u5171\u4eab\u53d8\u91cf\u65f6\uff0c\u4f7f\u7528 sync.Mutex \u5e76\u4e0d\u80fd\u4fdd\u8bc1\u7ed3\u679c\u6b63\u786e\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n
\n
\n <\/dt>\n
\n   BeautifulSoup\u4e2dfind_all\u63d0\u53d6\u5143\u7d20\u5305\u542b\u56de\u8f66\u7b26\u5982\u4f55\u5904\u7406\uff1f\n <\/dd>\n<\/dl>\n
\n
\n <\/dt>\n
\n   Python \u7c7b\u6784\u9020\u65b9\u6cd5\u80fd\u8fd4\u56de\u503c\u5417\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u5728GOLANG\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-206694","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206694","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=206694"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206694\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}