{"id":15456,"date":"2024-11-18T18:08:41","date_gmt":"2024-11-18T10:08:41","guid":{"rendered":"https:\/\/fwq.ai\/blog\/?p=15456"},"modified":"2024-11-18T18:08:41","modified_gmt":"2024-11-18T10:08:41","slug":"goroutine%e5%92%8cchannel%e7%9a%84%e8%af%a6%e7%bb%86%e7%90%86%e8%a7%a3%ef%bc%88%e4%b8%80%ef%bc%89","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/15456\/","title":{"rendered":"Goroutine\u548cchannel\u7684\u8be6\u7ec6\u7406\u89e3\uff08\u4e00\uff09"},"content":{"rendered":"

\u5982\u679c\u4e0d\u662f\u6211\u5bf9\u771f\u6b63\u5e76\u884c\u7684\u7ebf\u7a0b\u7684\u8ffd\u6c42\uff0c\u5c31\u4e0d\u4f1a\u8ba4\u8bc6\u5230Go\u6709\u591a\u4e48\u7684\u8ff7\u4eba\u3002<\/p>\n

Go\u8bed\u8a00\u4ece\u8bed\u8a00\u5c42\u9762\u4e0a\u5c31\u652f\u6301\u4e86\u5e76\u53d1\uff0c\u8fd9\u4e0e\u5176\u4ed6\u8bed\u8a00\u5927\u4e0d\u4e00\u6837\uff0c\u4e0d\u50cf\u4ee5\u524d\u6211\u4eec\u8981\u7528Thread\u5e93 \u6765\u65b0\u5efa\u7ebf\u7a0b\uff0c\u8fd8\u8981\u7528\u7ebf\u7a0b\u5b89\u5168\u7684\u961f\u5217\u5e93\u6765\u5171\u4eab\u6570\u636e\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u6211\u5165\u95e8\u7684\u5b66\u4e60\u7b14\u8bb0\u3002<\/p>\n

 <\/p>\n

\u4e00\u3001Go\u8bed\u8a00\u7684goroutines\u3001\u4fe1\u9053\u548c\u6b7b\u9501<\/h2>\n

1. goroutine<\/strong><\/h3>\n

Go\u8bed\u8a00\u4e2d\u6709\u4e2a\u6982\u5ff5\u53eb\u505agoroutine, \u8fd9\u7c7b\u4f3c\u6211\u4eec\u719f\u77e5\u7684\u7ebf\u7a0b\uff0c\u4f46\u662f\u66f4\u8f7b\u3002<\/p>\n

\u4ee5\u4e0b\u7684\u7a0b\u5e8f\uff0c\u6211\u4eec\u4e32\u884c\u5730\u53bb\u6267\u884c\u4e24\u6b21loop\u51fd\u6570:<\/p>\n

func loop() {\r\n\u00a0\u00a0\u00a0 for i := 0; i < 10; i++ {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 fmt.Printf(\"%d \", i)\r\n\u00a0\u00a0\u00a0 }\r\n}\r\n\r\nfunc main() {\r\n\u00a0\u00a0\u00a0 loop()\r\n\u00a0\u00a0\u00a0 loop()\r\n}<\/pre>\n
\u6beb\u65e0\u7591\u95ee\uff0c\u8f93\u51fa\u4f1a\u662f\u8fd9\u6837\u7684:<\/p>\n
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9<\/pre>\n
\u4e0b\u9762\u6211\u4eec\u628a\u4e00\u4e2aloop\u653e\u5728\u4e00\u4e2agoroutine\u91cc\u8dd1\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5173\u952e\u5b57go\u6765\u5b9a\u4e49\u5e76\u542f\u52a8\u4e00\u4e2agoroutine:<\/p>\n
func main() {\r\n    loop()\r\n    go loop() \/\/ \u542f\u52a8\u4e00\u4e2agoroutine\r\n}\r\nTips 01:<\/strong>\u5982\u679c\u628ago loop()\u653e\u5728loop()\u4e0a\u9762\u4e00\u884c\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u8fd9\u6837\u7684\u7ed3\u679c\uff1a\r\n0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9\r\n\u56e0\u4e3a\uff1a\u5728\u6267\u884cgo loop()\u65f6\uff0cmain\u8fdb\u7a0b\u5e76\u6ca1\u6709\u7ed3\u675f\uff0c\u5728\u6267\u884cloop(),\u6240\u4ee5\u4f1a\u770b\u5230\u8fd9\u6837\u7684\u7ed3\u679c\uff0c\u53cd\u4e4b\u5219\u4e0d\u7136\uff0c\r\nmain\u8fdb\u7a0b\u5df2\u7ecf\u7ed3\u675f\uff0c\u6240\u4ee5\u804c\u80fd\u770b\u5230\u5982\u4e0b\u7ed3\u679c\u3002<\/pre>\n
\u8fd9\u6b21\u7684\u8f93\u51fa\u53d8\u6210\u4e86:<\/p>\n
0 1 2 3 4 5 6 7 8 9<\/pre>\n
\u53ef\u662f\u4e3a\u4ec0\u4e48\u53ea\u8f93\u51fa\u4e86\u4e00\u8d9f\u5462\uff1f\u660e\u660e\u6211\u4eec\u4e3b\u7ebf\u8dd1\u4e86\u4e00\u8d9f\uff0c\u4e5f\u5f00\u4e86\u4e00\u4e2agoroutine\u6765\u8dd1\u4e00\u8d9f\u554a\u3002\u539f\u6765\uff0c\u5728goroutine\u8fd8\u6ca1\u6765\u5f97\u53ca\u8dd1loop\u7684\u65f6\u5019\uff0c\u4e3b\u51fd\u6570\u5df2\u7ecf\u9000\u51fa\u4e86\u3002<\/p>\n
main\u51fd\u6570\u9000\u51fa\u5730\u592a\u5feb\u4e86\uff0c\u6211\u4eec\u8981\u60f3\u529e\u6cd5\u963b\u6b62\u5b83\u8fc7\u65e9\u5730\u9000\u51fa\uff0c\u4e00\u4e2a\u529e\u6cd5\u662f\u8ba9main\u7b49\u5f85\u4e00\u4e0b:<\/p>\n
func main() {\r\n\u00a0\u00a0\u00a0 go loop()\r\n\u00a0\u00a0\u00a0 loop()\r\n\u00a0\u00a0\u00a0 time.Sleep(time.Second) \/\/ \u505c\u987f\u4e00\u79d2\r\n}<\/pre>\n
\u8fd9\u6b21\u786e\u5b9e\u8f93\u51fa\u4e86\u4e24\u8d9f\uff0c\u76ee\u7684\u8fbe\u5230\u4e86\u3002<\/p>\n
\u53ef\u662f\u91c7\u7528\u7b49\u5f85\u7684\u529e\u6cd5\u5e76\u4e0d\u597d\uff0c\u5982\u679cgoroutine\u5728\u7ed3\u675f\u7684\u65f6\u5019\uff0c\u544a\u8bc9\u4e0b\u4e3b\u7ebf\u8bf4\u201cHey, \u6211\u8981\u8dd1\u5b8c\u4e86\uff01\u201d\u5c31\u597d\u4e86\uff0c \u5373\u6240\u8c13\u963b\u585e\u4e3b\u7ebf\u7684\u529e\u6cd5\uff0c\u56de\u5fc6\u4e0b\u6211\u4eecPython\u91cc\u9762\u7b49\u5f85\u6240\u6709\u7ebf\u7a0b\u6267\u884c\u5b8c\u6bd5\u7684\u5199\u6cd5:<\/p>\n
for thread in threads:\r\n\u00a0\u00a0\u00a0 thread.join()<\/pre>\n
\u662f\u7684\uff0c\u6211\u4eec\u4e5f\u9700\u8981\u4e00\u4e2a\u7c7b\u4f3cjoin\u7684\u4e1c\u897f\u6765\u963b\u585e\u4f4f\u4e3b\u7ebf\u3002\u90a3\u5c31\u662f\u4fe1\u9053<\/p>\n
2. \u4fe1\u9053 channel<\/strong><\/h3>\n
\u4fe1\u9053\u662f\u4ec0\u4e48\uff1f\u7b80\u5355\u8bf4\uff0c\u662fgoroutine\u4e4b\u95f4\u4e92\u76f8\u901a\u8baf\u7684\u4e1c\u897f\u3002\u7c7b\u4f3c\u6211\u4eecUnix\u4e0a\u7684\u7ba1\u9053\uff08\u53ef\u4ee5\u5728\u8fdb\u7a0b\u95f4\u4f20\u9012\u6d88\u606f\uff09\uff0c \u7528\u6765goroutine\u4e4b\u95f4\u53d1\u6d88\u606f\u548c\u63a5\u6536\u6d88\u606f\u3002\u5176\u5b9e\uff0c\u5c31\u662f\u5728\u505agoroutine\u4e4b\u95f4\u7684\u5185\u5b58\u5171\u4eab\u3002<\/p>\n
\u4f7f\u7528make\u6765\u5efa\u7acb\u4e00\u4e2a\u4fe1\u9053:<\/p>\n
var channel chan int = make(chan int)\r\n\/\/ \u6216\r\nchannel := make(chan int)<\/pre>\n
\u90a3\u5982\u4f55\u5411\u4fe1\u9053\u5b58\u6d88\u606f\u548c\u53d6\u6d88\u606f\u5462\uff1f \u4e00\u4e2a\u4f8b\u5b50:<\/p>\n
func main() {\r\n\u00a0\u00a0\u00a0 var messages chan string = make(chan string)\r\n\u00a0\u00a0\u00a0 go func(message string) {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 messages <- message \/\/ \u5b58\u6d88\u606f\r\n\u00a0\u00a0\u00a0 }(\"Ping!\")\r\n\u00a0\u00a0\u00a0 fmt.Println(<-messages) \/\/ \u53d6\u6d88\u606f\r\n}<\/pre>\n
\u9ed8\u8ba4\u7684\uff0c\u4fe1\u9053\u7684\u5b58\u6d88\u606f\u548c\u53d6\u6d88\u606f\u90fd\u662f\u963b\u585e\u7684 (\u53eb\u505a\u65e0\u7f13\u51b2\u7684\u4fe1\u9053\uff0c\u4e0d\u8fc7\u7f13\u51b2\u8fd9\u4e2a\u6982\u5ff5\u7a0d\u540e\u4e86\u89e3\uff0c\u5148\u8bf4\u963b\u585e\u7684\u95ee\u9898)\u3002\u4e5f\u5c31\u662f\u8bf4, \u65e0\u7f13\u51b2\u7684\u4fe1\u9053\u5728\u53d6\u6d88\u606f\u548c\u5b58\u6d88\u606f\u7684\u65f6\u5019\u90fd\u4f1a\u6302\u8d77\u5f53\u524d\u7684goroutine\uff0c\u9664\u975e\u53e6\u4e00\u7aef\u5df2\u7ecf\u51c6\u5907\u597d\u3002<\/p>\n
\u6bd4\u5982\u4ee5\u4e0b\u7684main\u51fd\u6570\u548cfoo\u51fd\u6570:<\/p>\n
var ch chan int = make(chan int)\r\nfunc foo() {\r\n\u00a0\u00a0\u00a0 ch <- 0\u00a0 \r\n    \/\/\u5411ch\u4e2d\u52a0\u6570\u636e\uff0c\u5982\u679c\u6ca1\u6709\u5176\u4ed6goroutine\u6765\u53d6\u8d70\u8fd9\u4e2a\u6570\u636e\uff0c\u90a3\u4e48\u6302\u8d77foo, \u76f4\u5230main\u51fd\u6570\u628a0\u8fd9\u4e2a\u6570\u636e\u62ff\u8d70\r\n}<\/pre>\n
func main() {\r\n\u00a0\u00a0\u00a0 go foo()\r\n\u00a0\u00a0\u00a0 <- ch \r\n    \/\/\u4ecech\u53d6\u6570\u636e\uff0c\u5982\u679cch\u4e2d\u8fd8\u6ca1\u653e\u6570\u636e\uff0c\u90a3\u5c31\u6302\u8d77main\u7ebf\uff0c\u76f4\u5230foo\u51fd\u6570\u4e2d\u653e\u6570\u636e\u4e3a\u6b62\r\n}<\/pre>\n
\u90a3\u65e2\u7136\u4fe1\u9053\u53ef\u4ee5\u963b\u585e\u5f53\u524d\u7684goroutine, \u90a3\u4e48\u56de\u5230\u4e0a\u4e00\u90e8\u5206\u300cgoroutine\u300d\u6240\u9047\u5230\u7684\u95ee\u9898\u300c\u5982\u4f55\u8ba9goroutine\u544a\u8bc9\u4e3b\u7ebf\u6211\u6267\u884c\u5b8c\u6bd5\u4e86\u300d \u7684\u95ee\u9898\u6765, \u4f7f\u7528\u4e00\u4e2a\u4fe1\u9053\u6765\u544a\u8bc9\u4e3b\u7ebf\u5373\u53ef:<\/p>\n
var complete chan int = make(chan int)\r\nfunc loop() {\r\n    for i := 0; i < 10; i++ {\r\n        fmt.Printf(\"%d \", i)\r\n    }\r\n    complete <- 0 \/\/ \u6267\u884c\u5b8c\u6bd5\u4e86\uff0c\u53d1\u4e2a\u6d88\u606f\r\n}\r\n\r\nfunc main() {\r\n\u00a0\u00a0\u00a0 go loop()\r\n\u00a0\u00a0\u00a0 <- complete \/\/ \u76f4\u5230\u7ebf\u7a0b\u8dd1\u5b8c, \u53d6\u5230\u6d88\u606f. main\u5728\u6b64\u963b\u585e\u4f4f\r\n\u00a0}<\/pre>\n
\u5982\u679c\u4e0d\u7528\u4fe1\u9053\u6765\u963b\u585e\u4e3b\u7ebf\u7684\u8bdd\uff0c\u4e3b\u7ebf\u5c31\u4f1a\u8fc7\u65e9\u8dd1\u5b8c\uff0cloop\u7ebf\u90fd\u6ca1\u6709\u673a\u4f1a\u6267\u884c\u3002\u5176\u5b9e\uff0c\u65e0\u7f13\u51b2\u7684\u4fe1\u9053\u6c38\u8fdc\u4e0d\u4f1a\u5b58\u50a8\u6570\u636e\uff0c\u53ea\u8d1f\u8d23\u6570\u636e\u7684\u6d41\u901a\uff0c\u4e3a\u4ec0\u4e48\u8fd9\u4e48\u8bb2\u5462\uff1f<\/p>\n
    \n
  • \u4ece\u65e0\u7f13\u51b2\u4fe1\u9053\u53d6\u6570\u636e\uff0c\u5fc5\u987b\u8981\u6709\u6570\u636e\u6d41\u8fdb\u6765\u624d\u53ef\u4ee5\uff0c\u5426\u5219\u5f53\u524d\u7ebf\u963b\u585e<\/li>\n
  • \u6570\u636e\u6d41\u5165\u65e0\u7f13\u51b2\u4fe1\u9053, \u5982\u679c\u6ca1\u6709\u5176\u4ed6goroutine\u6765\u62ff\u8d70\u8fd9\u4e2a\u6570\u636e\uff0c\u90a3\u4e48\u5f53\u524d\u7ebf\u963b\u585e<\/li>\n<\/ul>\n
    \u6240\u4ee5\uff0c\u4f60\u53ef\u4ee5\u6d4b\u8bd5\u4e0b\uff0c\u65e0\u8bba\u5982\u4f55\uff0c\u6211\u4eec\u6d4b\u8bd5\u5230\u7684\u65e0\u7f13\u51b2\u4fe1\u9053\u7684\u5927\u5c0f\u90fd\u662f0 (len(channel))<\/p>\n
    \u5982\u679c\u4fe1\u9053\u6b63\u6709\u6570\u636e\u5728\u6d41\u52a8\uff0c\u6211\u4eec\u8fd8\u8981\u52a0\u5165\u6570\u636e\uff0c\u6216\u8005\u4fe1\u9053\u5e72\u6da9\uff0c\u6211\u4eec\u4e00\u76f4\u5411\u65e0\u6570\u636e\u6d41\u5165\u7684\u7a7a\u4fe1\u9053\u53d6\u6570\u636e\u5462\uff1f \u5c31\u4f1a\u5f15\u8d77\u6b7b\u9501<\/p>\n
    3. \u6b7b\u9501<\/strong><\/h3>\n
    \u4e00\u4e2a\u6b7b\u9501\u7684\u4f8b\u5b50:<\/p>\n
    func main() {\r\n    ch := make(chan int)\r\n    <- ch \/\/ \u963b\u585emain goroutine, \u4fe1\u9053c\u88ab\u9501\r\n }<\/pre>\n
    \u6267\u884c\u8fd9\u4e2a\u7a0b\u5e8f\u4f60\u4f1a\u770b\u5230Go\u62a5\u8fd9\u6837\u7684\u9519\u8bef:<\/p>\n
    fatal error: all goroutines are asleep - deadlock!<\/pre>\n
    \u4f55\u8c13\u6b7b\u9501? \u64cd\u4f5c\u7cfb\u7edf\u6709\u8bb2\u8fc7\u7684\uff0c\u6240\u6709\u7684\u7ebf\u7a0b\u6216\u8fdb\u7a0b\u90fd\u5728\u7b49\u5f85\u8d44\u6e90\u7684\u91ca\u653e\u3002\u5982\u4e0a\u7684\u7a0b\u5e8f\u4e2d, \u53ea\u6709\u4e00\u4e2agoroutine, \u6240\u4ee5\u5f53\u4f60\u5411\u91cc\u9762\u52a0\u6570\u636e\u6216\u8005\u5b58\u6570\u636e\u7684\u8bdd\uff0c\u90fd\u4f1a\u9501\u6b7b\u4fe1\u9053\uff0c \u5e76\u4e14\u963b\u585e\u5f53\u524d goroutine, \u4e5f\u5c31\u662f\u6240\u6709\u7684goroutine(\u5176\u5b9e\u5c31main\u7ebf\u4e00\u4e2a)\u90fd\u5728\u7b49\u5f85\u4fe1\u9053\u7684\u5f00\u653e(\u6ca1\u4eba\u62ff\u8d70\u6570\u636e\u4fe1\u9053\u662f\u4e0d\u4f1a\u5f00\u653e\u7684)\uff0c\u4e5f\u5c31\u662f\u6b7b\u9501\u54af\u3002<\/p>\n
    \u6211\u53d1\u73b0\u6b7b\u9501\u662f\u4e00\u4e2a\u5f88\u6709\u610f\u601d\u7684\u8bdd\u9898\uff0c\u8fd9\u91cc\u6709\u51e0\u4e2a\u6b7b\u9501\u7684\u4f8b\u5b50:<\/p>\n
      \n
    • \u53ea\u5728\u5355\u4e00\u7684goroutine\u91cc\u64cd\u4f5c\u65e0\u7f13\u51b2\u4fe1\u9053\uff0c\u4e00\u5b9a\u6b7b\u9501\u3002\u6bd4\u5982\u4f60\u53ea\u5728main\u51fd\u6570\u91cc\u64cd\u4f5c\u4fe1\u9053:<\/strong><\/li>\n<\/ul>\n
       func main() {\r\n     ch := make(chan int)\r\n     ch <- 1 \/\/ 1\u6d41\u5165\u4fe1\u9053\uff0c\u5835\u585e\u5f53\u524d\u7ebf, \u6ca1\u4eba\u53d6\u8d70\u6570\u636e\u4fe1\u9053\u4e0d\u4f1a\u6253\u5f00\r\n     fmt.Println(\"This line code wont run\") \/\/\u5728\u6b64\u884c\u6267\u884c\u4e4b\u524dGo\u5c31\u4f1a\u62a5\u6b7b\u9501\r\n }<\/pre>\n
        \n
      • \u5982\u4e0b\u4e5f\u662f\u4e00\u4e2a\u6b7b\u9501\u7684\u4f8b\u5b50:<\/strong><\/li>\n<\/ul>\n
        var ch1 chan int = make(chan int)\r\nvar ch2 chan int = make(chan int)\r\n\r\nfunc say(s string) {\r\n    fmt.Println(s)\r\n    ch1 <- <- ch2 \/\/ ch1 \u7b49\u5f85 ch2\u6d41\u51fa\u7684\u6570\u636e\r\n}\r\n\r\nfunc main() {\r\n    go say(\"hello\")\r\n    <- ch1\u00a0 \/\/ \u5835\u585e\u4e3b\u7ebf\r\n}<\/pre>\n
        \u5176\u4e2d\u4e3b\u7ebf\u7b49ch1\u4e2d\u7684\u6570\u636e\u6d41\u51fa\uff0cch1\u7b49ch2\u7684\u6570\u636e\u6d41\u51fa\uff0c\u4f46\u662fch2\u7b49\u5f85\u6570\u636e\u6d41\u5165\uff0c\u4e24\u4e2agoroutine\u90fd\u5728\u7b49\uff0c\u4e5f\u5c31\u662f\u6b7b\u9501\u3002<\/p>\n
          \n
        • \u5176\u5b9e\uff0c\u603b\u7ed3\u6765\u770b\uff0c\u4e3a\u4ec0\u4e48\u4f1a\u6b7b\u9501\uff1f\u975e\u7f13\u51b2\u4fe1\u9053\u4e0a\u5982\u679c\u53d1\u751f\u4e86\u6d41\u5165\u65e0\u6d41\u51fa\uff0c\u6216\u8005\u6d41\u51fa\u65e0\u6d41\u5165\uff0c\u4e5f\u5c31\u5bfc\u81f4\u4e86\u6b7b\u9501\u3002\u6216\u8005\u8fd9\u6837\u7406\u89e3 Go\u542f\u52a8\u7684\u6240\u6709goroutine\u91cc\u7684\u975e\u7f13\u51b2\u4fe1\u9053\u4e00\u5b9a\u8981\u4e00\u4e2a\u7ebf\u91cc\u5b58\u6570\u636e\uff0c\u4e00\u4e2a\u7ebf\u91cc\u53d6\u6570\u636e\uff0c\u8981\u6210\u5bf9\u624d\u884c \u3002\u6240\u4ee5\u4e0b\u9762\u7684\u793a\u4f8b\u4e00\u5b9a\u6b7b\u9501:<\/strong><\/li>\n<\/ul>\n
          c, quit := make(chan int), make(chan int)\r\ngo func() {\r\n    c <- 1\u00a0 \/\/ c\u901a\u9053\u7684\u6570\u636e\u6ca1\u6709\u88ab\u5176\u4ed6goroutine\u8bfb\u53d6\u8d70\uff0c\u5835\u585e\u5f53\u524dgoroutine\r\n    quit <- 0 \/\/ quit\u59cb\u7ec8\u6ca1\u6709\u529e\u6cd5\u5199\u5165\u6570\u636e\r\n}()\r\n<- quit \/\/ quit \u7b49\u5f85\u6570\u636e\u7684\u5199\r\nTips 02\uff1a<\/strong>\u8fde\u9501\u53cd\u5e94\u54c8<\/pre>\n
          \u4ed4\u7ec6\u5206\u6790\u7684\u8bdd\uff0c\u662f\u7531\u4e8e\uff1a\u4e3b\u7ebf\u7b49\u5f85quit\u4fe1\u9053\u7684\u6570\u636e\u6d41\u51fa\uff0cquit\u7b49\u5f85\u6570\u636e\u5199\u5165\uff0c\u800cfunc\u88abc\u901a\u9053\u5835\u585e\uff0c\u6240\u6709goroutine\u90fd\u5728\u7b49\uff0c\u6240\u4ee5\u6b7b\u9501\u3002<\/p>\n
          \u7b80\u5355\u6765\u770b\u7684\u8bdd\uff0c\u4e00\u5171\u4e24\u4e2a\u7ebf\uff0cfunc\u7ebf\u4e2d\u6d41\u5165c\u901a\u9053\u7684\u6570\u636e\u5e76\u6ca1\u6709\u5728main\u7ebf\u4e2d\u6d41\u51fa\uff0c\u80af\u5b9a\u6b7b\u9501\u3002<\/p>\n
          \u4f46\u662f\uff0c\u662f\u5426\u679c\u771f \u6240\u6709\u4e0d\u6210\u5bf9\u5411\u4fe1\u9053\u5b58\u53d6\u6570\u636e\u7684\u60c5\u51b5\u90fd\u662f\u6b7b\u9501?<\/p>\n
          \u5982\u4e0b\u662f\u4e2a\u53cd\u4f8b:<\/p>\n
          func main() {\r\n    c := make(chan int)\r\n    go func() {\r\n        c <- 1\r\n    }()\r\n}<\/pre>\n
          \u7a0b\u5e8f\u6b63\u5e38\u9000\u51fa\u4e86\uff0c\u5f88\u7b80\u5355\uff0c\u5e76\u4e0d\u662f\u6211\u4eec\u90a3\u4e2a\u603b\u7ed3\u4e0d\u8d77\u4f5c\u7528\u4e86\uff0c\u8fd8\u662f\u56e0\u4e3a\u4e00\u4e2a\u8ba9\u4eba\u5f88\u56e7\u7684\u539f\u56e0\uff0cmain\u53c8\u6ca1\u7b49\u5f85\u5176\u5b83goroutine\uff0c\u81ea\u5df1\u5148\u8dd1\u5b8c\u4e86\uff0c \u6240\u4ee5\u6ca1\u6709\u6570\u636e\u6d41\u5165c\u4fe1\u9053\uff0c\u4e00\u5171\u6267\u884c\u4e86\u4e00\u4e2agoroutine, \u5e76\u4e14\u6ca1\u6709\u53d1\u751f\u963b\u585e\uff0c\u6240\u4ee5\u6ca1\u6709\u6b7b\u9501\u9519\u8bef\uff0c\u4f46\u6b64\u65f6goroutine\u88ab\u6302\u8d77\u3002<\/strong><\/p>\n
          \u90a3\u4e48\u6b7b\u9501\u7684\u89e3\u51b3\u529e\u6cd5\u5462\uff1f<\/strong><\/p>\n
          \u6700\u7b80\u5355\u7684\uff0c\u628a\u6ca1\u53d6\u8d70\u7684\u6570\u636e\u53d6\u8d70\uff0c\u6ca1\u653e\u5165\u7684\u6570\u636e\u653e\u5165\uff0c \u56e0\u4e3a\u65e0\u7f13\u51b2\u4fe1\u9053\u4e0d\u80fd\u627f\u8f7d\u6570\u636e\uff0c\u90a3\u4e48\u5c31\u8d76\u7d27\u62ff\u8d70\uff01\u5177\u4f53\u6765\u8bb2\uff0c\u5c31\u6b7b\u9501\u4f8b\u5b503\u4e2d\u7684\u60c5\u51b5\uff0c\u53ef\u4ee5\u8fd9\u4e48\u907f\u514d\u6b7b\u9501:<\/p>\n
          c, quit := make(chan int), make(chan int)\r\n\r\ngo func() {\r\n   c <- 1\r\n   quit <- 0\r\n}()\r\n\r\n<- c \/\/ \u53d6\u8d70c\u7684\u6570\u636e\uff01\r\n<-quit<\/pre>\n
          \u53e6\u4e00\u4e2a\u89e3\u51b3\u529e\u6cd5\u662f\u7f13\u51b2\u4fe1\u9053, \u5373\u8bbe\u7f6ec\u6709\u4e00\u4e2a\u6570\u636e\u7684\u7f13\u51b2\u5927\u5c0f:<\/p>\n
          c := make(chan int, 1)<\/pre>\n
          \u8fd9\u6837\u7684\u8bdd\uff0cc\u53ef\u4ee5\u7f13\u5b58\u4e00\u4e2a\u6570\u636e\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u653e\u5165\u4e00\u4e2a\u6570\u636e\uff0cc\u5e76\u4e0d\u4f1a\u6302\u8d77\u5f53\u524d\u7ebf, \u518d\u653e\u4e00\u4e2a\u624d\u4f1a\u6302\u8d77\u5f53\u524d\u7ebf\u76f4\u5230\u7b2c\u4e00\u4e2a\u6570\u636e\u88ab\u5176\u4ed6goroutine\u53d6\u8d70, \u4e5f\u5c31\u662f\u53ea\u963b\u585e\u5728\u5bb9\u91cf\u4e00\u5b9a\u7684\u65f6\u5019\uff0c\u4e0d\u8fbe\u5bb9\u91cf\u4e0d\u963b\u585e\u3002<\/p>\n
          \u8fd9\u5341\u5206\u7c7b\u4f3c\u6211\u4eecPython\u4e2d\u7684\u961f\u5217Queue\u4e0d\u662f\u5417\uff1f<\/p>\n
          \u4e8c\u3001\u65e0\u7f13\u51b2\u4fe1\u9053\u7684\u6570\u636e\u8fdb\u51fa\u987a\u5e8f<\/h2>\n
          \u6211\u4eec\u5df2\u7ecf\u77e5\u9053\uff0c\u65e0\u7f13\u51b2\u4fe1\u9053\u4ece\u4e0d\u5b58\u50a8\u6570\u636e\uff0c\u6d41\u5165\u7684\u6570\u636e\u5fc5\u987b\u8981\u6d41\u51fa\u624d\u53ef\u4ee5\u3002<\/p>\n
          \u89c2\u5bdf\u4ee5\u4e0b\u7684\u7a0b\u5e8f:<\/p>\n
          var ch chan int = make(chan int)\r\n\r\nfunc foo(id int) { \/\/id: \u8fd9\u4e2aroutine\u7684\u6807\u53f7\r\n    ch <- id\r\n}\r\n\r\nfunc main() {\r\n    \/\/ \u5f00\u542f5\u4e2aroutine\r\n    for i := 0; i < 5; i++ {\r\n        go foo(i)\r\n    }\r\n   \r\n    \/\/ \u53d6\u51fa\u4fe1\u9053\u4e2d\u7684\u6570\u636e\r\n    for i := 0; i < 5; i++ {\r\n        fmt.Print(<- ch)\r\n    }\r\n}\r\n<\/pre>\n
          \u6211\u4eec\u5f00\u4e865\u4e2agoroutine\uff0c\u7136\u540e\u53c8\u4f9d\u6b21\u53d6\u6570\u636e\u3002\u5176\u5b9e\u6574\u4e2a\u7684\u6267\u884c\u8fc7\u7a0b\u7ec6\u5206\u7684\u8bdd\uff0c5\u4e2a\u7ebf\u7684\u6570\u636e \u4f9d\u6b21\u6d41\u8fc7\u4fe1\u9053ch, main\u6253\u5370\u4e4b, \u800c\u5b8f\u89c2\u4e0a\u6211\u4eec\u770b\u5230\u7684\u5373 \u65e0\u7f13\u51b2\u4fe1\u9053\u7684\u6570\u636e\u662f\u5148\u5230\u5148\u51fa\uff0c\u4f46\u662f \u65e0\u7f13\u51b2\u4fe1\u9053\u5e76\u4e0d\u5b58\u50a8\u6570\u636e\uff0c\u53ea\u8d1f\u8d23\u6570\u636e\u7684\u6d41\u901a<\/p>\n
          \u4e09\u3001\u7f13\u51b2\u4fe1\u9053<\/strong><\/h2>\n
          \u7ec8\u4e8e\u5230\u4e86\u8fd9\u4e2a\u8bdd\u9898\u4e86, \u5176\u5b9e\u7f13\u5b58\u4fe1\u9053\u7528\u82f1\u6587\u6765\u8bb2\u66f4\u4e3a\u8fbe\u610f: buffered channel.<\/p>\n
          \u7f13\u51b2\u8fd9\u4e2a\u8bcd\u610f\u601d\u662f\uff0c\u7f13\u51b2\u4fe1\u9053\u4e0d\u4ec5\u53ef\u4ee5\u6d41\u901a\u6570\u636e\uff0c\u8fd8\u53ef\u4ee5\u7f13\u5b58\u6570\u636e\u3002\u5b83\u662f\u6709\u5bb9\u91cf\u7684\uff0c\u5b58\u5165\u4e00\u4e2a\u6570\u636e\u7684\u8bdd , \u53ef\u4ee5\u5148\u653e\u5728\u4fe1\u9053\u91cc\uff0c\u4e0d\u5fc5\u963b\u585e\u5f53\u524d\u7ebf\u800c\u7b49\u5f85\u8be5\u6570\u636e\u53d6\u8d70\u3002<\/p>\n
          \u5f53\u7f13\u51b2\u4fe1\u9053\u8fbe\u5230\u6ee1\u7684\u72b6\u6001\u7684\u65f6\u5019\uff0c\u5c31\u4f1a\u8868\u73b0\u51fa\u963b\u585e\u4e86\uff0c\u56e0\u4e3a\u8fd9\u65f6\u518d\u4e5f\u4e0d\u80fd\u627f\u8f7d\u66f4\u591a\u7684\u6570\u636e\u4e86\uff0c\u300c\u4f60\u4eec\u5fc5\u987b\u628a \u6570\u636e\u62ff\u8d70\uff0c\u624d\u53ef\u4ee5\u6d41\u5165\u6570\u636e\u300d\u3002<\/p>\n
          \u5728\u58f0\u660e\u4e00\u4e2a\u4fe1\u9053\u7684\u65f6\u5019\uff0c\u6211\u4eec\u7ed9make\u4ee5\u7b2c\u4e8c\u4e2a\u53c2\u6570\u6765\u6307\u660e\u5b83\u7684\u5bb9\u91cf(\u9ed8\u8ba4\u4e3a0\uff0c\u5373\u65e0\u7f13\u51b2):<\/p>\n
          var ch chan int = make(chan int, 2) \/\/ \u5199\u51652\u4e2a\u5143\u7d20\u90fd\u4e0d\u4f1a\u963b\u585e\u5f53\u524dgoroutine, \u5b58\u50a8\u4e2a\u6570\u8fbe\u52302\u7684\u65f6\u5019\u4f1a\u963b\u585e
          \n\u5982\u4e0b\u7684\u4f8b\u5b50\uff0c\u7f13\u51b2\u4fe1\u9053ch\u53ef\u4ee5\u65e0\u7f13\u51b2\u7684\u6d41\u51653\u4e2a\u5143\u7d20:<\/p>\n
          func main() {\r\n    ch := make(chan int, 3)\r\n    ch <- 1\r\n    ch <- 2\r\n    ch <- 3\r\n}<\/pre>\n
          \u5982\u679c\u4f60\u518d\u8bd5\u56fe\u6d41\u5165\u4e00\u4e2a\u6570\u636e\u7684\u8bdd\uff0c\u4fe1\u9053ch\u4f1a\u963b\u585emain\u7ebf, \u62a5\u6b7b\u9501\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u7f13\u51b2\u4fe1\u9053\u4f1a\u5728\u6ee1\u5bb9\u91cf\u7684\u65f6\u5019\u52a0\u9501\u3002<\/p>\n
          \u5176\u5b9e\uff0c\u7f13\u51b2\u4fe1\u9053\u662f\u5148\u8fdb\u5148\u51fa\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u7f13\u51b2\u4fe1\u9053\u770b\u4f5c\u4e3a\u4e00\u4e2a\u7ebf\u7a0b\u5b89\u5168\u7684\u961f\u5217\uff1a<\/p>\n
          func main() {\r\n    ch := make(chan int, 3)\r\n    ch <- 1\r\n    ch <- 2\r\n    ch <- 3\r\n    fmt.Println(<-ch) \/\/ 1\r\n    fmt.Println(<-ch) \/\/ 2\r\n    fmt.Println(<-ch) \/\/ 3\r\n}\r\n<\/pre>\n
          \u56db\u3001\u4fe1\u9053\u6570\u636e\u8bfb\u53d6\u548c\u4fe1\u9053\u5173\u95ed<\/h2>\n
          \u4f60\u4e5f\u8bb8\u53d1\u73b0\uff0c\u4e0a\u9762\u7684\u4ee3\u7801\u4e00\u4e2a\u4e00\u4e2a\u5730\u53bb\u8bfb\u53d6\u4fe1\u9053\u7b80\u76f4\u592a\u8d39\u4e8b\u4e86\uff0cGo\u8bed\u8a00\u5141\u8bb8\u6211\u4eec\u4f7f\u7528range\u6765\u8bfb\u53d6\u4fe1\u9053:<\/p>\n
          func main() {\r\n    ch := make(chan int, 3)\r\n    ch <- 1\r\n    ch <- 2\r\n    ch <- 3\r\n    \r\n    for v := range ch {\r\n         fmt.Println(v)\r\n    }\r\n }<\/pre>\n
          \u5982\u679c\u4f60\u6267\u884c\u4e86\u4e0a\u9762\u7684\u4ee3\u7801\uff0c\u4f1a\u62a5\u6b7b\u9501\u9519\u8bef\u7684\uff0c\u539f\u56e0\u662frange\u4e0d\u7b49\u5230\u4fe1\u9053\u5173\u95ed\u662f\u4e0d\u4f1a\u7ed3\u675f\u8bfb\u53d6\u7684<\/strong>\u3002\u4e5f\u5c31\u662f\u5982\u679c \u7f13\u51b2\u4fe1\u9053\u5e72\u6db8\u4e86\uff0c\u90a3\u4e48range\u5c31\u4f1a\u963b\u585e\u5f53\u524dgoroutine, \u6240\u4ee5\u6b7b\u9501\u54af\u3002<\/p>\n
            \n
          • \u90a3\u4e48\uff0c\u6211\u4eec\u8bd5\u7740\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u6bd4\u8f83\u5bb9\u6613\u60f3\u5230\u7684\u662f\u8bfb\u5230\u4fe1\u9053\u4e3a\u7a7a\u7684\u65f6\u5019\u5c31\u7ed3\u675f\u8bfb\u53d6:<\/strong><\/li>\n<\/ul>\n
             ch := make(chan int, 3)\r\n ch <- 1\r\n ch <- 2\r\n ch <- 3\r\n \r\n for v := range ch {\r\n    fmt.Println(v)\r\n    if len(ch) <= 0 { \/\/ \u5982\u679c\u73b0\u6709\u6570\u636e\u91cf\u4e3a0\uff0c\u8df3\u51fa\u5faa\u73af\r\n        break\r\n    }\r\n}<\/pre>\n
            \u4ee5\u4e0a\u7684\u65b9\u6cd5\u662f\u53ef\u4ee5\u6b63\u5e38\u8f93\u51fa\u7684\uff0c\u4f46\u662f\u6ce8\u610f\u68c0\u67e5\u4fe1\u9053\u5927\u5c0f\u7684\u65b9\u6cd5\u4e0d\u80fd\u5728\u4fe1\u9053\u5b58\u53d6\u90fd\u5728\u53d1\u751f\u7684\u65f6\u5019\u7528\u4e8e\u53d6\u51fa\u6240\u6709\u6570\u636e\uff0c\u8fd9\u4e2a\u4f8b\u5b50 \u662f\u56e0\u4e3a\u6211\u4eec\u53ea\u5728ch\u4e2d\u5b58\u4e86\u6570\u636e\uff0c\u73b0\u5728\u4e00\u4e2a\u4e00\u4e2a\u5f80\u5916\u53d6\uff0c\u4fe1\u9053\u5927\u5c0f\u662f\u9012\u51cf\u7684\u3002<\/p>\n
              \n
            • \u53e6\u4e00\u4e2a\u65b9\u5f0f\u662f\u663e\u5f0f\u5730\u5173\u95ed\u4fe1\u9053:<\/strong><\/li>\n<\/ul>\n
              ch := make(chan int, 3)\r\nch <- 1\r\nch <- 2\r\nch <- 3\r\nclose(ch)\u00a0 \/\/ \u663e\u5f0f\u5730\u5173\u95ed\u4fe1\u9053\r\nfor v := range ch {\r\n\u00a0\u00a0\u00a0\u00a0 fmt.Println(v)\r\n}<\/pre>\n
              \u88ab\u5173\u95ed\u7684\u4fe1\u9053\u4f1a\u7981\u6b62\u6570\u636e\u6d41\u5165, \u662f\u53ea\u8bfb\u7684<\/strong>\u3002\u6211\u4eec\u4ecd\u7136\u53ef\u4ee5\u4ece\u5173\u95ed\u7684\u4fe1\u9053\u4e2d\u53d6\u51fa\u6570\u636e\uff0c\u4f46\u662f\u4e0d\u80fd\u518d\u5199\u5165\u6570\u636e\u4e86\u3002<\/p>\n
              \u4e94\u3001\u7b49\u5f85\u591agorountine\u7684\u65b9\u6848<\/strong><\/h2>\n
              \u90a3\u597d\uff0c\u6211\u4eec\u56de\u5230\u6700\u521d\u7684\u4e00\u4e2a\u95ee\u9898\uff0c\u4f7f\u7528\u4fe1\u9053\u5835\u585e\u4e3b\u7ebf\uff0c\u7b49\u5f85\u5f00\u51fa\u53bb\u7684\u6240\u6709goroutine\u8dd1\u5b8c\u3002\u8fd9\u662f\u4e00\u4e2a\u6a21\u578b\uff0c\u5f00\u51fa\u5f88\u591a\u5c0fgoroutine, \u5b83\u4eec\u5404\u81ea\u8dd1\u5404\u81ea\u7684\uff0c\u6700\u540e\u8dd1\u5b8c\u4e86\u5411\u4e3b\u7ebf\u62a5\u544a\u3002<\/p>\n
              \u6211\u4eec\u8ba8\u8bba\u5982\u4e0b2\u4e2a\u7248\u672c\u7684\u65b9\u6848:<\/p>\n
                \n
              1. \u53ea\u4f7f\u7528\u5355\u4e2a\u65e0\u7f13\u51b2\u4fe1\u9053\u963b\u585e\u4e3b\u7ebf<\/strong><\/li>\n
              2. \u4f7f\u7528\u5bb9\u91cf\u4e3agoroutines\u6570\u91cf\u7684\u7f13\u51b2\u4fe1\u9053<\/strong><\/li>\n<\/ol>\n
                \u5bf9\u4e8e\u65b9\u68481, \u793a\u4f8b\u7684\u4ee3\u7801\u5927\u6982\u4f1a\u662f\u8fd9\u4e2a\u6837\u5b50:<\/p>\n
                var quit chan int \/\/ \u53ea\u5f00\u4e00\u4e2a\u4fe1\u9053\r\n\r\nfunc foo(id int) {\r\n    fmt.Println(id)\r\n    quit <- 0 \/\/ ok, finished\r\n}\r\n\r\nfunc main() {\r\n    count := 1000\r\n    quit = make(chan int) \/\/ \u65e0\u7f13\u51b2\r\n    for i := 0; i < count; i++ {\r\n        go foo(i)\r\n    }\r\n   \r\n   for i := 0; i < count; i++ {\r\n      <- quit\r\n    }\r\n}<\/pre>\n
                \u5bf9\u4e8e\u65b9\u68482, \u628a\u4fe1\u9053\u6362\u6210\u7f13\u51b21000\u7684:<\/p>\n
                quit = make(chan int, count) \/\/ \u5bb9\u91cf1000<\/pre>\n
                \u5176\u5b9e\u533a\u522b\u4ec5\u4ec5\u5728\u4e8e\u4e00\u4e2a\u662f\u7f13\u51b2\u7684\uff0c\u4e00\u4e2a\u662f\u975e\u7f13\u51b2\u7684\u3002<\/p>\n
                \u5bf9\u4e8e\u8fd9\u4e2a\u573a\u666f\u800c\u8a00\uff0c\u4e24\u8005\u90fd\u80fd\u5b8c\u6210\u4efb\u52a1, \u90fd\u662f\u53ef\u4ee5\u7684\u3002<\/p>\n
                  \n
                • \u65e0\u7f13\u51b2\u7684\u4fe1\u9053\u662f\u4e00\u6279\u6570\u636e\u4e00\u4e2a\u4e00\u4e2a\u7684\u300c\u6d41\u8fdb\u6d41\u51fa\u300d<\/li>\n
                • \u7f13\u51b2\u4fe1\u9053\u5219\u662f\u4e00\u4e2a\u4e00\u4e2a\u5b58\u50a8\uff0c\u7136\u540e\u4e00\u8d77\u6d41\u51fa\u53bb<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
                  \u5982\u679c\u4e0d\u662f\u6211\u5bf9\u771f\u6b63\u5e76\u884c\u7684\u7ebf\u7a0b\u7684\u8ffd\u6c42\uff0c\u5c31\u4e0d\u4f1a\u8ba4\u8bc6\u5230Go\u6709\u591a\u4e48\u7684\u8ff7\u4eba\u3002 Go\u8bed\u8a00\u4ece\u8bed\u8a00\u5c42\u9762\u4e0a\u5c31\u652f\u6301\u4e86\u5e76\u53d1\uff0c\u8fd9\u4e0e\u5176\u4ed6\u8bed\u8a00\u5927\u4e0d\u4e00\u6837\uff0c\u4e0d\u50cf\u4ee5\u524d\u6211\u4eec\u8981\u7528Thread\u5e93 \u6765\u65b0\u5efa\u7ebf\u7a0b\uff0c\u8fd8\u8981\u7528\u7ebf\u7a0b\u5b89\u5168\u7684\u961f\u5217\u5e93\u6765\u5171\u4eab\u6570\u636e\u3002 \u4ee5\u4e0b\u662f\u6211\u5165\u95e8\u7684\u5b66\u4e60\u7b14\u8bb0\u3002   \u4e00\u3001Go\u8bed\u8a00\u7684goroutines\u3001\u4fe1\u9053\u548c\u6b7b\u9501 1. goroutine Go\u8bed\u8a00\u4e2d\u6709\u4e2a\u6982\u5ff5\u53eb\u505agoroutine, \u8fd9\u7c7b\u4f3c\u6211\u4eec\u719f\u77e5\u7684\u7ebf\u7a0b\uff0c\u4f46\u662f\u66f4\u8f7b\u3002 \u4ee5\u4e0b\u7684\u7a0b\u5e8f\uff0c\u6211\u4eec\u4e32\u884c\u5730\u53bb\u6267\u884c\u4e24\u6b21loop\u51fd\u6570: func loop() { \u00a0\u00a0\u00a0 for i := 0; i < 10; i++ { \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 fmt.Printf(“%d “, i) \u00a0\u00a0\u00a0 } } func main() { \u00a0\u00a0\u00a0 loop() \u00a0\u00a0\u00a0 loop() } \u6beb\u65e0\u7591\u95ee\uff0c\u8f93\u51fa\u4f1a\u662f\u8fd9\u6837\u7684: 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-15456","post","type-post","status-publish","format-standard","hentry","category-docker"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15456","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=15456"}],"version-history":[{"count":1,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15456\/revisions"}],"predecessor-version":[{"id":15457,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15456\/revisions\/15457"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=15456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=15456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=15456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}