{"id":208339,"date":"2025-07-08T09:14:08","date_gmt":"2025-07-08T01:14:08","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208339\/"},"modified":"2025-07-08T09:14:08","modified_gmt":"2025-07-08T01:14:08","slug":"%e5%a6%82%e4%bd%95%e7%a1%ae%e4%bf%9d%e6%89%80%e6%9c%89-goroutine-%e5%9c%a8%e6%b2%a1%e6%9c%89-time-sleep-%e7%9a%84%e6%83%85%e5%86%b5%e4%b8%8b%e7%bb%88%e6%ad%a2%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208339\/","title":{"rendered":"\u5982\u4f55\u786e\u4fdd\u6240\u6709 goroutine \u5728\u6ca1\u6709 time.Sleep \u7684\u60c5\u51b5\u4e0b\u7ec8\u6b62\uff1f"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u786e\u4fdd\u6240\u6709 goroutine \u5728\u6ca1\u6709 time.Sleep \u7684\u60c5\u51b5\u4e0b\u7ec8\u6b62\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-05-01 23:00:23<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587\u300a\u5982\u4f55\u786e\u4fdd\u6240\u6709 goroutine \u5728\u6ca1\u6709 time.Sleep \u7684\u60c5\u51b5\u4e0b\u7ec8\u6b62\uff1f\u300b<\/span>\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60Golang<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591aGolang<\/span>\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~<\/p>\n

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

\u6211\u6b63\u5728\u5c1d\u8bd5\u7528 go \u4f8b\u7a0b\u6765\u8bd5\u9a8c\u8c01\u5148\u6536\u5230\u6d88\u606f\u3002\u7136\u800c\uff0c\u5f53\u4e3b goroutine \u7ec8\u6b62\u65f6\uff0c\u4e00\u4e9b go \u4f8b\u7a0b\u4ecd\u7136\u5b58\u5728\u3002\u6211\u901a\u8fc7 panic<\/code> \u7684\u5806\u6808\u8ddf\u8e2a\u770b\u5230\u4e86\u8fd9\u4e00\u70b9\u3002\u4f46\u662f\uff0c\u5982\u679c\u6211\u6dfb\u52a0 time.sleep<\/code> \u5b83\u4eec\u90fd\u4f1a\u7ec8\u6b62\u3002\u6211\u731c\u8fd9\u662f\u56e0\u4e3a\uff0c\u5f53\u4e3b\u8981\u7684 go \u4f8b\u7a0b\u7ed3\u675f\u65f6\uff0cgo \u8fd0\u884c\u65f6\u627e\u4e0d\u5230\u65f6\u95f4\u6765\u7ec8\u6b62\u5176\u4ed6\u4f8b\u7a0b\u3002<\/p>\n

    package main\n\n    import (\n        \"fmt\"\n        \"time\"\n    )\n\n    func main() {\n        for i := 0; i < 1000000; i++ {\n            algo()\n        }\n\n        \/\/ without this, some goroutines do not terminate\n        \/\/ time.Sleep(time.Second)\n\n        panic(\"\")\n    }\n\n    func algo() {\n        c := make(chan int)\n        wait := make(chan bool)\n\n        go racer(1, wait, c)\n        go racer(2, wait, c)\n        go racer(3, wait, c)\n        go racer(4, wait, c)\n        go racer(5, wait, c)\n\n        \/\/ who gets it first\n        c <- 5\n        close(wait)\n    }\n\n    func racer(name int, wait chan bool, c chan int) {\n        select {\n        case <-wait:\n        case v := <-c:\n            fmt.Println(name, \":\", v)\n        }\n    }\n<\/pre>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u8fd9\u6b63\u662f sync.waitgroup<\/code> \u7684\u7528\u9014\u3002\u4ee5\u4e0b\u662f\u53d6\u81ea \u7684\u73a9\u5177\u793a\u4f8b\uff1a<\/p>\n
package main\n\nimport (\n    \"fmt\"\n    \"sync\"\n    \"time\"\n)\n\nfunc main() {\n    messages := make(chan int)\n    var wg sync.WaitGroup\n\n    \/\/ you can also add these one at \n    \/\/ a time if you need to \n\n    wg.Add(3)\n    go func() {\n        defer wg.Done()\n        time.Sleep(time.Second * 3)\n        messages <- 1\n    }()\n    go func() {\n        defer wg.Done()\n        time.Sleep(time.Second * 2)\n        messages <- 2\n    }() \n    go func() {\n        defer wg.Done()\n        time.Sleep(time.Second * 1)\n        messages <- 3\n    }()\n    go func() {\n        for i := range messages {\n            fmt.Println(i)\n        }\n    }()\n\n    wg.Wait()\n}<\/pre>\n
\u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u786e\u4fdd\u6240\u6709 goroutine \u5728\u6ca1\u6709 time.Sleep \u7684\u60c5\u51b5\u4e0b\u7ec8\u6b62\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/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-208339","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208339","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=208339"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208339\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}