{"id":207882,"date":"2025-07-08T15:20:34","date_gmt":"2025-07-08T07:20:34","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207882\/"},"modified":"2025-07-08T15:20:34","modified_gmt":"2025-07-08T07:20:34","slug":"%e5%9c%a8%e5%9b%9e%e5%90%88%e6%b8%b8%e6%88%8f%e4%b8%ad%e5%90%8c%e6%ad%a5-go-%e4%be%8b%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207882\/","title":{"rendered":"\u5728\u56de\u5408\u6e38\u620f\u4e2d\u540c\u6b65 Go \u4f8b\u7a0b"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5728\u56de\u5408\u6e38\u620f\u4e2d\u540c\u6b65 Go \u4f8b\u7a0b<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-26 13:00:37<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca\u8273\u6240\u6709\u4eba\uff01\u54c8\u54c8\uff0c\u5c0f\u4f19\u4f34\u4eec\u53c8\u6765\u5b66\u4e60\u5566~\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u300a\u5728\u56de\u5408\u6e38\u620f\u4e2d\u540c\u6b65 Go \u4f8b\u7a0b\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u4e0d\u77e5\u9053\u5927\u5bb6\u5bf9\u5176\u90fd\u6709\u591a\u5c11\u4e86\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u4e00\u8d77\u6765\u770b\u4e00\u5427\uff01\u5f53\u7136\uff0c\u975e\u5e38\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u8bc4\u8bba\uff0c\u7ed9\u51fa\u5408\u7406\u7684\u5efa\u8bae\uff0c\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\uff0c\u4e00\u8d77\u8fdb\u6b65\uff01<\/p>\n

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

\u6211\u5bf9 go \u5b8c\u5168\u964c\u751f\uff0c\u6211\u6b63\u5728\u5c1d\u8bd5\u7f16\u5199\u4e00\u4e2a\u6e38\u620f\u4f5c\u4e3a\u7ec3\u4e60\u3002<\/p>\n

\u57fa\u672c\u4e0a\uff0c\u4e3b\u6d41\u7a0b\u5c06\u521b\u5efa totalnumberofplayers<\/code> \u4f8b\u7a0b\uff0c\u6bcf\u4e2a\u4f8b\u7a0b\u5c06\u5728\u4e00\u8f6e\u6e38\u620f\u4e4b\u540e\u6267\u884c\u4e00\u4e9b\u4efb\u52a1\u3002\u6bcf\u8f6e\u7ed3\u675f\u65f6\uff0c\u4e00\u540d\u73a9\u5bb6\u4f1a\u88ab\u4ece\u6e38\u620f\u4e2d\u79fb\u9664\uff0c\u76f4\u5230\u53ea\u5269\u4e0b\u4e00\u540d\u73a9\u5bb6\u3002<\/p>\n

\u4e3a\u4e86\u786e\u4fdd\u4f8b\u7a0b\u5728\u540c\u4e00\u8f6e\u4e2d\u540c\u6b65\uff0c\u6211\u5c1d\u8bd5\u4f7f\u7528 waitgroup<\/code> \uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n

func main() {\n    \/\/ ... initialization code\n\n    var wg sync.waitgroup\n    for i := 0; i < totalnumberofplayers; i++ {\n        go routinejob(i, ..., &wg)\n    }\n    \/\/ todo temporary workaround to let the main flux wait\n    fmt.scanln()\n}<\/pre>\n
\u6bcf\u4e2a\u4f8b\u7a0b\u8fd0\u884c\u76f8\u540c\u7684\u4f5c\u4e1a\uff1a<\/p>\n
func routineJob(routineId int, ..., wg *sync.WaitGroup) {\n    \/\/ ... \n    for round := 0; round < totalNumberOfPlayers-1; round++ {\n        numberOfPlayers := totalNumberOfPlayers - round\n        wg.Add(1) \/\/ Add player to round\n        \/\/ ... perform some tasks\n        if ... { \/\/ Player verifies condition to be removed from the game\n            wg.Done() \/\/ Remove player from round\n            return\n        } \n        \/\/ ... perform some other tasks\n        wg.Done() \/\/ Remove player from round\n        wg.Wait() \/\/ Wait for all players to be removed before going to the next round\n    }\n}<\/pre>\n
\u4f46\u662f\u5728\u7b2c\u4e00\u8f6e\u7ed3\u675f\u65f6\u6211\u6536\u5230\u4ee5\u4e0b\u9519\u8bef\uff1a<\/p>\n
 \u6050\u614c\uff1a\u540c\u6b65\uff1a\u5728\u5148\u524d\u7684\u7b49\u5f85\u8fd4\u56de\u4e4b\u524d\u91cd\u7528\u7b49\u5f85\u7ec4 <\/p>\n
\u5728\u7f51\u4e0a\u67e5\u4e86\u4e00\u4e0b\uff0c\u6211\u53d1\u73b0\u95ee\u9898\u53ef\u80fd\u662f\u5728\u8c03\u7528 wg.wait()<\/code> \u4e4b\u540e\uff0c\u6211\u4e0d\u5141\u8bb8\u8c03\u7528 wg.add(1)<\/code>\u3002\u5982\u679c\u662f\u8fd9\u6837\u7684\u8bdd\uff0c\u5982\u4f55\u5b9e\u73b0\u8fd9\u6837\u7684\u57fa\u4e8e\u56de\u5408\u7684\u6e38\u620f<\/strong>\uff1f<\/p>\n
\u6ce8\u610f\uff1a<\/strong>\u6211\u6b63\u5728\u8003\u8651\u4e3a\u6bcf\u4e00\u8f6e\u521b\u5efa\u4e00\u4e2a\u5916\u90e8 waitgroup<\/code> \uff0c\u4f46\u8fd9\u9700\u8981\u6211\u5728 main()<\/code> \u51fd\u6570\u4e2d\u4ee5\u67d0\u79cd\u65b9\u5f0f\u521b\u5efa\u53e6\u4e00\u4e2a\u5faa\u73af\uff0c\u6211\u5b81\u613f\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\u4ee5\u4fdd\u7559\u4ee3\u7801\u7684\u7ed3\u6784\u5927\u90e8\u5206\u5982\u6240\u5448\u73b0\u7684\u90a3\u6837\u3002<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u60a8\u4f3c\u4e4e\u8bef\u89e3\u4e86sync.waitgroup\u7684\u7528\u9014\u3002\u68c0\u67e5<\/p>\n
\u4f7f\u7528sync.waitgroup\u65f6\uff0c\u6211\u5efa\u8bae\u60a8\u5728\u4f7f\u7528go func()\u4e4b\u524d\u6dfb\u52a01\uff0c\u5e76\u5728\u4f7f\u7528go func()\u4e4b\u540e\u6dfb\u52a0defer\u4ee5\u5c06\u5176\u6807\u8bb0\u4e3a\u5b8c\u6210\u3002<\/p>\n
\u5047\u8bbe\u60a8\u5728 main \u4e2d\u4f7f\u7528 go \u4f8b\u7a0b\u6765\u8c03\u7528 routinejob<\/code>\u3002\u6240\u4ee5\u4f60\u9700\u8981\u5148\u5728\u8fd9\u91cc\u6dfb\u52a0sync.waitgroup\uff0c\u8ba9\u4f60\u7684main\u7b49\u5f85\u6240\u6709goroutine\u5b8c\u6210\u3002<\/p>\n
func main() {\n\/\/ ... initialization code\n\nvar wg sync.waitgroup\nfor i := 0; i < totalnumberofplayers; i++ {\n    wg.add(1)\n    go func(){\n        \/\/ we add 1 for each loop and when the job finish, defer will run which mark added one done. \n        defer wg.done()\n        routinejob(i, ...)\n    }()\n}\nwg.wait()\n\/\/ no need your work around any more. \nfmt.scanln()<\/pre>\n
\u9002\u5408\u60a8\u7684\u65e5\u5e38\u5de5\u4f5c\u3002\u5982\u679c\u6709\u9700\u8981\u7b49\u5f85\u7684go\u4f8b\u7a0b\uff0c\u53ef\u4ee5\u50cf\u4e0a\u9762\u4e00\u6837\u7533\u8bf7\u3002<\/p>\n
func routineJob(routineId int, ...) {\n    for round := 0; round < totalNumberOfPlayers-1; round++ {\n        var wg sync.WaitGroup \/\/ I assume that you need a list of funcs running in go routine here.\n        wg.Add(1) \n        go func() {\n          defer wg.Done()\n          \/\/ Do your logic....\n          return\n        }()\n        \/\/ your go routine 2 \n        wg.Add(1) \n        go func() {\n          defer wg.Done()\n          \/\/ Do your logic....\n          return\n        }()\n        wg.Wait() \/\/ Wait for all players to be removed before going to the next roundx\n    }\n}<\/pre>\n
\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGolang\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/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-207882","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207882","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=207882"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207882\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207882"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207882"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207882"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}