{"id":206338,"date":"2025-06-12T10:16:58","date_gmt":"2025-06-12T02:16:58","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206338\/"},"modified":"2025-06-12T10:16:58","modified_gmt":"2025-06-12T02:16:58","slug":"goroutine-%e6%ad%bb%e9%94%81%ef%bc%9a%e4%b8%ba%e4%bb%80%e4%b9%88%e4%bc%9a%e5%87%ba%e7%8e%b0-fatal-error-all-goroutines-are-asleep-deadlock%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206338\/","title":{"rendered":"Goroutine \u6b7b\u9501\uff1a\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 “fatal error: all goroutines are asleep – deadlock!”\uff1f"},"content":{"rendered":"

\u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9
\nGOLANG<\/span>\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecd
\nGOLANG<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587
\n\u300aGoroutine \u6b7b\u9501\uff1a\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 “fatal error: all goroutines are asleep – deadlock!”\uff1f\u300b<\/span>\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230
\n<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~,
\n,
\ngoroutine \u6b7b\u9501: \u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 fatal error<\/strong>,\u5728\u5e76\u53d1\u7f16\u7a0b\u4e2d\uff0cgoroutine \u6b7b\u9501\u662f\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\u3002\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u4ee3\u7801\u793a\u4f8b\u6765\u7406\u89e3\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 “fatal error: all goroutines are asleep – deadlock!”\u3002,\u8fd9\u4e2a\u4ee3\u7801\u4f7f\u7528\u4e24\u4e2a chan (a \u548c b) \u5728\u4e24\u4e2a goroutine \u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\u3002\u5b83\u4f7f\u7528 waitgroup \u4e3a\u4e3b goroutine \u7b49\u5f85\u4e24\u4e2a goroutine \u5b8c\u6210\u3002,\u95ee\u9898\u51fa\u5728 b goroutine \u6267\u884c\u7684\u6700\u540e\u4e00\u6b21\u5faa\u73af\u8fed\u4ee3\u3002\u5728\u8fd9\u4e2a\u8fed\u4ee3\u4e2d\uff0cb goroutine \u53d1\u9001 true \u5230 a \u5e76\u9000\u51fa\u3002\u4f46\u662f\uff0c\u6b64\u65f6 a goroutine \u5df2\u7ecf\u6ca1\u6709\u673a\u4f1a\u63a5\u6536\u8be5\u6d88\u606f\uff0c\u56e0\u4e3a\u5b83\u6b63\u5728\u7b49\u5f85 b goroutine \u53d1\u9001 true\u3002\u56e0\u6b64\uff0c\u7a0b\u5e8f\u8fdb\u5165\u6b7b\u9501\u72b6\u6001\u3002,\u8981\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u53ef\u4ee5\u5728 b goroutine \u7684\u6700\u540e\u4e00\u6b21\u8fed\u4ee3\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u989d\u5916\u7684\u63a5\u6536\u64cd\u4f5c\u3002\u8fd9\u5c06\u786e\u4fdd a goroutine \u6709\u673a\u4f1a\u5904\u7406 b goroutine \u7684\u6700\u540e\u4e00\u6761\u6d88\u606f\uff0c\u4ece\u800c\u907f\u514d\u6b7b\u9501\u3002,\u4fee\u6539\u540e\u7684\u4ee3\u7801\u5982\u4e0b\uff1a,\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 \u6b7b\u9501\uff1a\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 “fatal error: all goroutines are asleep – deadlock!”\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002,goroutine \u6b7b\u9501: \u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 fatal error,\u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9
\nGOLANG<\/span>\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecd
\nGOLANG<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587
\n\u300aGoroutine \u6b7b\u9501\uff1a\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 “fatal error: all goroutines are asleep – deadlock!”\uff1f\u300b<\/span>\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230
\n<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> Goroutine \u6b7b\u9501\uff1a\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 “fatal error: all goroutines are asleep – deadlock!”\uff1f<\/span><\/p>\n

Goroutine \u6b7b\u9501\uff1a\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 “fatal error: all goroutines are asleep – deadlock!”\uff1f<\/h1>\n

2024-11-10 09:51:57<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9GOLANG<\/span>\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecdGOLANG<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587\u300aGoroutine \u6b7b\u9501\uff1a\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 “fatal error: all goroutines are asleep – deadlock!”\uff1f\u300b<\/span>\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~<\/p>\n

<\/p>\n

goroutine \u6b7b\u9501: \u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 fatal error<\/strong><\/p>\n

\u5728\u5e76\u53d1\u7f16\u7a0b\u4e2d\uff0cgoroutine \u6b7b\u9501\u662f\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\u3002\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u4ee3\u7801\u793a\u4f8b\u6765\u7406\u89e3\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 “fatal error: all goroutines are asleep – deadlock!”\u3002<\/p>\n

func main() {\n    a := make(chan bool)\n    b := make(chan bool)\n    defer close(a)\n    defer close(b)\n    var wg sync.waitgroup\n    wg.add(2)\n    go func() {\n        for i := 0; i < 10; i += 2 {\n            if <-a {\n                fmt.println(i)\n                b <- true\n            }\n        }\n        wg.done()\n    }()\n    go func() {\n        for i := 1; i < 10; i += 2 {\n            if <-b {\n                fmt.println(i)\n                a <- true\n            }\n        }\n        wg.done()\n    }()\n    a <- true\n    wg.wait()\n}<\/pre>\n
\u8fd9\u4e2a\u4ee3\u7801\u4f7f\u7528\u4e24\u4e2a chan (a \u548c b) \u5728\u4e24\u4e2a goroutine \u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\u3002\u5b83\u4f7f\u7528 waitgroup \u4e3a\u4e3b goroutine \u7b49\u5f85\u4e24\u4e2a goroutine \u5b8c\u6210\u3002<\/p>\n
\u95ee\u9898\u51fa\u5728 b goroutine \u6267\u884c\u7684\u6700\u540e\u4e00\u6b21\u5faa\u73af\u8fed\u4ee3\u3002\u5728\u8fd9\u4e2a\u8fed\u4ee3\u4e2d\uff0cb goroutine \u53d1\u9001 true \u5230 a \u5e76\u9000\u51fa\u3002\u4f46\u662f\uff0c\u6b64\u65f6 a goroutine \u5df2\u7ecf\u6ca1\u6709\u673a\u4f1a\u63a5\u6536\u8be5\u6d88\u606f\uff0c\u56e0\u4e3a\u5b83\u6b63\u5728\u7b49\u5f85 b goroutine \u53d1\u9001 true\u3002\u56e0\u6b64\uff0c\u7a0b\u5e8f\u8fdb\u5165\u6b7b\u9501\u72b6\u6001\u3002<\/p>\n
\u8981\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u53ef\u4ee5\u5728 b goroutine \u7684\u6700\u540e\u4e00\u6b21\u8fed\u4ee3\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u989d\u5916\u7684\u63a5\u6536\u64cd\u4f5c\u3002\u8fd9\u5c06\u786e\u4fdd a goroutine \u6709\u673a\u4f1a\u5904\u7406 b goroutine \u7684\u6700\u540e\u4e00\u6761\u6d88\u606f\uff0c\u4ece\u800c\u907f\u514d\u6b7b\u9501\u3002<\/p>\n
\u4fee\u6539\u540e\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
func main() {\n    A := make(chan bool)\n    B := make(chan bool)\n    defer close(A)\n    defer close(B)\n    var wg sync.WaitGroup\n    wg.Add(2)\n    go func() {\n        for i := 0; i < 10; i += 2 {\n            if <-A {\n                fmt.Println(i)\n                B <- true\n            }\n        }\n        <-A \/\/ \u989d\u5916\u7684\u63a5\u6536\u64cd\u4f5c\n        wg.Done()\n    }()\n    go func() {\n        for i := 1; i < 10; i += 2 {\n            if <-B {\n                fmt.Println(i)\n                A <- true\n            }\n        }\n        wg.Done()\n    }()\n    A <- true\n    wg.Wait()\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 \u6b7b\u9501\uff1a\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0 “fatal error: all goroutines are asleep – deadlock!”\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n
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