{"id":208176,"date":"2025-07-08T08:25:38","date_gmt":"2025-07-08T00:25:38","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208176\/"},"modified":"2025-07-08T08:25:38","modified_gmt":"2025-07-08T00:25:38","slug":"goroutine-%e4%b8%8a%e7%9a%84%e9%80%89%e6%8b%a9%e6%80%a7%e4%ba%92%e6%96%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208176\/","title":{"rendered":"goroutine \u4e0a\u7684\u201c\u9009\u62e9\u6027\u201d\u4e92\u65a5"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> goroutine \u4e0a\u7684\u201c\u9009\u62e9\u6027\u201d\u4e92\u65a5<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-29 21:21:34<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5404\u4f4d\u5c0f\u4f19\u4f34\u4eec\uff0c\u5927\u5bb6\u597d\u5440\uff01\u770b\u770b\u4eca\u5929\u6211\u53c8\u7ed9\u5404\u4f4d\u5e26\u6765\u4e86\u4ec0\u4e48\u6587\u7ae0\uff1f\u672c\u6587\u6807\u9898\u662f<\/span>\u300agoroutine \u4e0a\u7684\u201c\u9009\u62e9\u6027\u201d\u4e92\u65a5\u300b<\/span>\uff0c\u5f88\u660e\u663e\u662f\u5173\u4e8eGolang<\/span>\u7684\u6587\u7ae0\u54c8\u54c8\u54c8\uff0c\u5176\u4e2d\u5185\u5bb9\u4e3b\u8981\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\uff0c\u5982\u679c\u80fd\u5e2e\u5230\u4f60\uff0c\u89c9\u5f97\u5f88\u4e0d\u9519\u7684\u8bdd\uff0c\u6b22\u8fce\u5404\u4f4d\u591a\u591a\u70b9\u8bc4\u548c\u5206\u4eab\uff01<\/span><\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u662f Go \u65b0\u624b\uff0c\u6211\u60f3\u5b9e\u73b0\u4e00\u79cd\u81ea\u5b9a\u4e49\u4e92\u65a5\u673a\u5236\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5e94\u7528\u7a0b\u5e8f\u7528\u6237\u4e00\u6b21\u53ef\u4ee5\u6267\u884c\u4e00\u4e2a goroutine\u3002 \u4e3a\u4e86\u7b80\u5316\u8d77\u89c1\uff0c\u5c06 U1 \u548c U2 \u89c6\u4e3a\u5e94\u7528\u7a0b\u5e8f\u7528\u6237\uff0c\u4ee5\u53ca F1(userId)\u3001F2(userId) \u548c F3(userId) \u4e09\u4e2a\u4e0d\u540c\u7684 goroutine\uff0c\u5b83\u4eec\u4ece\u6570\u636e\u5e93\u4e2d\u8bfb\u53d6\/\u5199\u5165\u4ec5\u4e0e\u7ed9\u5b9a\u7528\u6237\u76f8\u5173\u7684\u8bb0\u5f55\u5f3a>\u3002\u6211\u5e0c\u671b\uff0c\u5982\u679cU1\u8c03\u7528\uff08F1\uff0cF2\uff0cF3\uff09\uff0c\uff08F2\uff0cF3\uff09\u76f4\u5230F1\u7ed3\u675f\u624d\u6267\u884c\uff0c\u90a3\u4e48\u6267\u884cF2\u6216F3\uff08\u6309\u8c03\u7528\u987a\u5e8f\u5c06\u662f\u6700\u4f73\u89e3\u51b3\u65b9\u6848\uff09\uff0c\u6700\u540e\u6267\u884c\u5269\u4f59\u7684\u4e00\u4e2a\u88ab\u6267\u884c\u3002 U2 \u4e0d\u53d7 U1 \u9501\u7684\u5f71\u54cd\uff0c\u4f46\u5979\u5982\u524d\u6240\u8ff0\u53d7\u5176\u81ea\u5df1\u7684\u9501\u63a7\u5236\u3002\u4f60\u4f1a\u5982\u4f55\u5b9e\u65bd\u8fd9\u4e2a\uff1f\u662f\u5426\u6709\u5185\u7f6e\u539f\u8bed\uff1f\u8c22\u8c22<\/p>\n

<\/p>\n

\u89e3\u51b3\u65b9\u6848<\/h2>\n

<\/p>\n

\u4f7f\u7528 \u8fdb\u884c\u4e92\u65a5\u3002\u4e3a\u6bcf\u4e2a\u6d3b\u52a8\u7528\u6237\u4f7f\u7528\u4e00\u4e2a\u4e92\u65a5\u4f53\u3002 <\/p>\n

\u6211\u5047\u8bbe\u7528\u6237\u662f\u901a\u8fc7\u67d0\u79cd id \u6765\u8bc6\u522b\u7684\u3002\u6211\u4eec\u5c06\u8be5\u7c7b\u578b\u79f0\u4e3a userid<\/code>\u3002\u4f7f\u7528\u7531 userid<\/code> \u952e\u63a7\u7684\u6620\u5c04\u6765\u5b58\u50a8\u6bcf\u4e2a\u7528\u6237\u4e92\u65a5\u9501\u3002 <\/p>\n

\u53ea\u6709\u6d3b\u52a8\u7528\u6237\u624d\u9700\u8981\u4e92\u65a5\u4f53\uff0c\u800c\u4e0d\u662f\u6240\u6709\u6f5c\u5728\u7528\u6237\u3002\u4f7f\u7528\u6574\u6570\u8ba1\u6570\u5668\u6765\u786e\u5b9a\u7528\u6237\u662f\u5426\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\u3002<\/p>\n

\u4e0a\u8ff0\u5730\u56fe\u548c\u8ba1\u6570\u5668\u4e5f\u5e94\u8be5\u53d7\u5230\u4e92\u65a5\u9501\u7684\u4fdd\u62a4\u3002<\/p>\n

\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

type userID string \/\/ replace userID type with id type for your application\n\n\/\/ userLock is the per user lock\ntype userLock struct {\n    sync.Mutex\n\n    \/\/ n is number of goroutines between lock and unlock\n    n int\n}\n\nvar (\n    \/\/ mu protects locks map and n field in userLock\n    mu    sync.Mutex\n\n    \/\/ locks is map of active locks\n    locks = map[userID]*userLock{}\n)\n\n\n\/\/ lockUser locks the user specified by id. If the lock is\n\/\/ already in use, the calling goroutine blocks until\n\/\/ the lock is available.\nfunc lockUser(id userID) {\n    mu.Lock()\n    l := locks[id]\n    if l == nil {\n        l = &userLock{}\n        locks[id] = l\n    }\n    l.n++\n    mu.Unlock()\n    l.Lock()\n}\n\n\/\/ unlockUser unlocks the user specified by id. It \n\/\/ is a run-time error if the user is not locked on\n\/\/ entry unlockUser.\nfunc unlockUser(id userID) {\n    mu.Lock()\n    l := locks[id]\n    if l == nil {\n        panic(\"unlock without lock\")\n    }\n    l.n--\n    if l.n == 0 {\n        delete(locks, id)\n    }\n    mu.Unlock()\n    l.Unlock()\n}<\/pre>\n
\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300agoroutine \u4e0a\u7684\u201c\u9009\u62e9\u6027\u201d\u4e92\u65a5\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-208176","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208176","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=208176"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208176\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}