{"id":207929,"date":"2025-07-08T10:41:33","date_gmt":"2025-07-08T02:41:33","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207929\/"},"modified":"2025-07-08T10:41:33","modified_gmt":"2025-07-08T02:41:33","slug":"%e9%80%9a%e7%9f%a5-goroutine-%e5%9c%a8%e9%80%9a%e9%81%93%e5%85%b3%e9%97%ad%e6%97%b6%e5%81%9c%e6%ad%a2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207929\/","title":{"rendered":"\u901a\u77e5 goroutine \u5728\u901a\u9053\u5173\u95ed\u65f6\u505c\u6b62"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u901a\u77e5 goroutine \u5728\u901a\u9053\u5173\u95ed\u65f6\u505c\u6b62<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-26 22:00:34<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5728Golang\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929\u5c31\u6574\u7406\u5206\u4eab\u300a\u901a\u77e5 goroutine \u5728\u901a\u9053\u5173\u95ed\u65f6\u505c\u6b62\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n

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

\u6211\u6709\u591a\u4e2a goroutine\uff0cselect<\/code> \u6765\u81ea\u4e24\u4e2a\u901a\u9053\uff1a\u4e00\u4e2a chan \u63d0\u4f9b\u6570\u636e\uff0c\u4e00\u4e2a chan \u7528\u4e8e\u4fe1\u53f7\uff08\u4e00\u79cd\u5b8c\u6210\/\u9000\u51fa\u901a\u9053\uff09\u3002<\/p>\n

\u6211\u4f7f\u7528\u4fe1\u53f7\u901a\u9053\u6765\u6355\u83b7\u4fe1\u53f7\uff08kill\uff09\u5e76\u4f18\u96c5\u5730\u5173\u95ed goroutine\u3002<\/p>\n

\u6211\u6b63\u5728\u8fd0\u884c package a<\/code> \u4e2d\u7684\u201cworker\u201dgoroutine\uff0c\u800c\u6355\u83b7\u4fe1\u53f7\u7684 goroutine \u51fd\u6570\u5219\u4ece package b<\/code> \u8fd0\u884c\u3002<\/p>\n

\u6211\u4f7f\u7528 https:\/\/gist.github.com\/reiki4040\/be3705f307d3cd136e85 \u4e2d\u7684\u4fe1\u53f7\u5305\u3002 <\/p>\n

package a\n\nimport \"sync\"\n\nworkchan := make(chan int)\nquitchan := make(chan struct{})\n\nfunc stop() {\n        fmt.println(\"stop called, closing channel\")\n        close(quitchan)\n}\n\nfunc work(wg *sync.waitgroup) {\n    var item int\n    for {\n        select {\n        case item = <- workchan:\n            ... processing\n        case <- quitchan:\n            wg.done()\n            return\n        }\n    }\n}<\/pre>\n
\u6355\u83b7\u4fe1\u53f7\u7684goroutine\uff0c\u5e76\u8c03\u7528a.stop()<\/code><\/p>\n
package b\n\nimport (\n    \"os\/signal\"\n    \"os\"\n    \"syscal\"\n    \"a\"\n)\n\nfunc signal() {\n\n    schan := make(chan os.signal, 1)\n    signal.notify(signalchan, syscall.sigterm, syscall.sigint)\n\n    for {\n        s := <-schan\n        switch s {\n        case os.interrupt, syscall.sigterm:\n            a.stop()\n        }\n    }\n}<\/pre>\n
\u8fd9\u662f\u6211\u7684\u4e3b\u8981\u529f\u80fd<\/p>\n
package main\n\nimport (\n    \"a\"\n    \"b\"\n    \"sync\"\n)\n\nfunc main() {\n\n    var wg sync.WaitGroup\n\n    go b.Signal()\n\n    wg.Add(1) \/\/ for simplicity; actual code start multiple goroutines of Work\n    go a.Work(&wg)\n\n    \/\/ wait until work is done\n    wg.Wait()\n    fmt.Println(\"Done.\")\n}<\/pre>\n
\u5f53\u6211\u7ec8\u6b62\u6b63\u5728\u8fd0\u884c\u7684\u8fdb\u7a0b\u65f6\uff0c\u6211\u770b\u5230\u6765\u81ea quit<\/code> \u7684\u6253\u5370\u6d88\u606f\u3002\u6211\u9884\u8ba1\uff0c\u4e00\u65e6\u901a\u9053\u5173\u95ed\uff0cgoroutines \u5c06\u5728\u67d0\u4e2a\u65f6\u523b select<\/code> quitchan<\/code> \u60c5\u51b5\u5e76\u8fd4\u56de\u3002<\/p>\n
\u4f46\u4ed6\u4eec\u7ee7\u7eed\u5954\u8dd1\uff1b\u4ed6\u4eec\u7ee7\u7eed\u5904\u7406\u6765\u81ea workchan<\/code> \u7684\u9879\u76ee\u3002\u4f3c\u4e4e\u5b83\u88ab\u5ffd\u7565\u4e86\u3002\u6211\u5728\u8fd9\u91cc\u7f3a\u5c11\u4ec0\u4e48\uff1f \u901a\u9053\u4e0d\u4f1a\u88ab\u5173\u95ed\u5417\uff1f\u600e\u4e48\u8fd8\u5f00\u7740\uff1f<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u9996\u5148\u6211\u8ba4\u4e3a\u4f60\u5e94\u8be5\u505a\u4e00\u4e2a\u7b80\u5355\u7684\u6d4b\u8bd5\uff0c\u7136\u540e\u628a\u5b83\u8fc7\u53bb\u3002\u8ba9\u5176\u4ed6\u4eba\u4e86\u89e3\u60a8\u7684\u95ee\u9898\u4f1a\u66f4\u6709\u5e2e\u52a9\u3002<\/strong><\/p>\n
\u6211\u6539\u53d8\u4e86\u4f60\u7684\u4ee3\u7801\uff0c\u8ba9\u5b83\u50cf go \u4ee3\u7801\u4e00\u6837\u9605\u8bfb\uff0c\u800c\u4e0d\u662f\u5176\u4ed6\u8bed\u8a00\u3002 \u73b0\u5728\u6210\u529f\u4e86<\/strong>\u3002<\/p>\n
\u5728\u4f60\u7684\u4ee3\u7801\u4e2d\uff0c\u6709\u4e00\u4e9b\u9519\u8bef\uff0c\u6211\u5c06\u5176\u6807\u8bb0\u4e3aerror\u6ce8\u91ca\u3002\u6709\u4e9b\u662f\u8bed\u6cd5\u9519\u8bef\uff0c\u4f8b\u5982\u521b\u5efa workchan<\/code>\u3002\u6709\u4e9b\u662f\u7c7b\u578b\u9519\u8bef\u3002<\/p>\n
\u4f60\u5e94\u8be5\u77e5\u9053\u7684\u4e00\u4ef6\u5bfc\u5165\u8bbe\u8ba1\u4e8b\u60c5\uff0c\u5f53\u4f60\u60f3\u5728\u6267\u884c stop()<\/code> \u540e\u9000\u51fa\u65f6\uff0c\u4f60\u5e94\u8be5\u5173\u95ed\u5411 workchan<\/code> \u53d1\u9001\u6570\u636e\u7684 workchan<\/code>\uff0c\u800c\u4e0d\u662f\u5728\u6536\u5230\u65e5\u671f\u65f6\u8fd4\u56de\u3002<\/p>\n
    \n
  • \n
    a.go<\/p>\n
    package a\n\nimport (\n    \"fmt\"\n    \"sync\"\n)\n\n\/\/ error: can not do make in global\nvar workchan chan int\nvar quitchan chan struct{}\n\n\/\/ create chan when init\nfunc init() {\n    fmt.println(\"init a\")\n    workchan = make(chan int)\n    quitchan = make(chan struct{})\n}\n\nfunc stop() {\n    fmt.println(\"stop called, closing quit channel\")\n    close(quitchan)\n}\n\n\/\/ close the work channel where you send date\nfunc start(wg *sync.waitgroup) {\n    i := 0\n    for {\n        select {\n        case <-quitchan:\n            fmt.println(\"closing work chan\")\n            close(workchan)\n            wg.done()\n            return\n        default:\n            workchan <- i\n            i++\n        }\n    }\n}\n\n\/\/ work will exit when workchan closed\nfunc work(wg *sync.waitgroup) {\n    for item := range workchan {\n        fmt.printf(\"receive %d\\n\", item)\n    }\n    wg.done()\n    fmt.println(\"work exit\")\n}<\/pre>\n<\/li>\n
  • \n
    b.go<\/p>\n
    package b\n\nimport (\n    \"github.com\/shitaibin\/awesome\/a\"\n    \"os\"\n    \"os\/signal\"\n    \"syscall\"\n)\n\nfunc signal() {\n\n    schan := make(chan os.signal, 1)\n    signal.notify(schan, syscall.sigterm, syscall.sigint) \/\/ error\n\n    for {\n        s := <-schan\n        switch s {\n        case os.interrupt, syscall.sigterm:\n            a.stop()\n            return \/\/ should return free resource\n        }\n    }\n}<\/pre>\n<\/li>\n
  • \n
    main.go<\/p>\n
    package main\n\nimport (\n    \"fmt\"\n    \"github.com\/shitaibin\/awesome\/a\"\n    \"github.com\/shitaibin\/awesome\/b\"\n    \"sync\"\n)\n\nfunc main() {\n\n    var wg sync.waitgroup\n\n    go b.signal()\n\n    wg.add(1)      \/\/ for simplicity; actual code start multiple goroutines of work\n    go a.work(&wg) \/\/ error: pointer\n\n    wg.add(1)\n    go a.start(&wg) \/\/ send data and close channel when stop\n\n    \/\/ wait until work is done\n    wg.wait()\n    fmt.println(\"done.\")\n}<\/pre>\n<\/li>\n
  • \n
    \u7ed3\u679c<\/p>\n
    \/\/ omit\nReceive 87028\nReceive 87029\nReceive 87030\nReceive 87031\nReceive 87032\nReceiv^C101    <---- send signal here\nReceive 87102\nReceive 87103\nReceive 87104\nReceive 87105\nReceive 87106\nReceive 87107\nReceive 87108\nReceive 87109\nReceive 87110\nStop called, closing quit channel\nReceive 87111\nReceive 87112\nClosing work chan\nWork exit\nDone.<\/pre>\n<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8eGolang\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\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-207929","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207929","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=207929"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207929\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}