{"id":44291,"date":"2023-07-01T01:13:43","date_gmt":"2023-12-27T04:15:47","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%94%a8go%e8%af%ad%e8%a8%80%e8%bf%9b%e8%a1%8c-spawn%ef%bc%88%e6%b4%be%e7%94%9f%ef%bc%89%e5%92%8c-channel%ef%bc%88%e9%80%9a%e9%81%93%ef%bc%89%e7%9a%84%e6%93%8d%e4%bd%9c%e3%80%82\/"},"modified":"2024-04-30T11:25:27","modified_gmt":"2024-04-30T03:25:27","slug":"%e7%94%a8go%e8%af%ad%e8%a8%80%e8%bf%9b%e8%a1%8c-spawn%ef%bc%88%e6%b4%be%e7%94%9f%ef%bc%89%e5%92%8c-channel%ef%bc%88%e9%80%9a%e9%81%93%ef%bc%89%e7%9a%84%e6%93%8d%e4%bd%9c%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%94%a8go%e8%af%ad%e8%a8%80%e8%bf%9b%e8%a1%8c-spawn%ef%bc%88%e6%b4%be%e7%94%9f%ef%bc%89%e5%92%8c-channel%ef%bc%88%e9%80%9a%e9%81%93%ef%bc%89%e7%9a%84%e6%93%8d%e4%bd%9c%e3%80%82\/","title":{"rendered":"\u7528Go\u8bed\u8a00\u8fdb\u884c spawn\uff08\u6d3e\u751f\uff09\u548c channel\uff08\u901a\u9053\uff09\u7684\u64cd\u4f5c"},"content":{"rendered":"<p>\u5728\u4e4b\u524d\u7684\u5e16\u5b50\u4e2d\uff0c\u6211\u5c1d\u8bd5\u4e86Crystal\u3002\u5728\u8fd9\u4e2a\u94fe\u63a5\u4e2d\uff1ahttp:\/\/qiita.com\/tabetomo\/items\/754308a6cd48bcf56585<br \/>\n\u6211\u8bd5\u7740\u7528elixir\u7684spawn\u548cchannel\u6765\u8fdb\u884c\u53d1\u9001\u548c\u63a5\u6536\u64cd\u4f5c\u3002\u73b0\u5728\u6211\u5c06\u7528\u76f8\u540c\u7684\u65b9\u6cd5\u5728golang\u4e2d\u5c1d\u8bd5\u4e00\u4e0b\u3002<\/p>\n<p>\u4ee5\u4e0b\u662fCrystal\u7f16\u7a0b\u793a\u4f8b\u548c\u6267\u884c\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">ch1<\/span> <span class=\"o\">=<\/span> <span class=\"no\">Channel<\/span><span class=\"p\">(<\/span><span class=\"no\">String<\/span><span class=\"p\">).<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"mi\">1<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">ch2<\/span> <span class=\"o\">=<\/span> <span class=\"no\">Channel<\/span><span class=\"p\">(<\/span><span class=\"no\">String<\/span><span class=\"p\">).<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"mi\">1<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">done<\/span> <span class=\"o\">=<\/span> <span class=\"no\">Channel<\/span><span class=\"p\">(<\/span><span class=\"no\">Bool<\/span><span class=\"p\">).<\/span><span class=\"nf\">new<\/span><span class=\"p\">()<\/span>\r\n\r\n<span class=\"n\">spawn<\/span> <span class=\"k\">do<\/span>\r\n  <span class=\"nb\">puts<\/span> <span class=\"n\">ch1<\/span><span class=\"p\">.<\/span><span class=\"nf\">receive<\/span>\r\n  <span class=\"nb\">puts<\/span> <span class=\"n\">ch2<\/span><span class=\"p\">.<\/span><span class=\"nf\">receive<\/span>\r\n  <span class=\"nb\">puts<\/span> <span class=\"n\">ch1<\/span><span class=\"p\">.<\/span><span class=\"nf\">receive<\/span>\r\n  <span class=\"n\">done<\/span><span class=\"p\">.<\/span><span class=\"nf\">send<\/span><span class=\"p\">(<\/span><span class=\"kp\">true<\/span><span class=\"p\">)<\/span> <span class=\"c1\"># end<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<span class=\"n\">spawn<\/span> <span class=\"k\">do<\/span>\r\n  <span class=\"n\">ch1<\/span><span class=\"p\">.<\/span><span class=\"nf\">send<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"apple\"<\/span><span class=\"p\">)<\/span>\r\n  <span class=\"n\">ch2<\/span><span class=\"p\">.<\/span><span class=\"nf\">send<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"orange\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"k\">end<\/span>\r\n<span class=\"n\">ch1<\/span><span class=\"p\">.<\/span><span class=\"nf\">send<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"grape\"<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">done<\/span><span class=\"p\">.<\/span><span class=\"nf\">receive<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>crystall spawn3.cr                                                                  \r\ngrape                                                                                         \r\norange                                                                                        \r\napple \r\n<\/code><\/pre>\n<h1>\u5728Go\u4e2d\u751f\u6210(goroutine)<\/h1>\n<p>\u540c\u4e00\u4ef6\u4e8b\u60c5\u5728go\u4e2d\u7684\u8fdb\u884c\u8fc7\u7a0b\u8fc7\u4e8e\u7b80\u5355\u4e86\u3002\u5f53\u6211\u7528crystal\u5199\u7684\u65f6\u5019\u4e5f\u6709\u540c\u6837\u7684\u611f\u89c9\uff0c\u592a\u8fc7\u8f7b\u677e\u4e86\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"s\">\"fmt\"<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">ch1<\/span> <span class=\"o\">:=<\/span> <span class=\"nb\">make<\/span><span class=\"p\">(<\/span><span class=\"k\">chan<\/span> <span class=\"kt\">string<\/span><span class=\"p\">,<\/span> <span class=\"m\">1<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">ch2<\/span> <span class=\"o\">:=<\/span> <span class=\"nb\">make<\/span><span class=\"p\">(<\/span><span class=\"k\">chan<\/span> <span class=\"kt\">string<\/span><span class=\"p\">,<\/span> <span class=\"m\">1<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">done<\/span> <span class=\"o\">:=<\/span> <span class=\"nb\">make<\/span><span class=\"p\">(<\/span><span class=\"k\">chan<\/span> <span class=\"kt\">bool<\/span><span class=\"p\">,<\/span> <span class=\"m\">0<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">go<\/span> <span class=\"k\">func<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">msg<\/span> <span class=\"o\">:=<\/span> <span class=\"o\">&lt;-<\/span><span class=\"n\">ch1<\/span>\r\n        <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"n\">msg<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"n\">msg<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&lt;-<\/span><span class=\"n\">ch2<\/span>\r\n        <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"n\">msg<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"n\">msg<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&lt;-<\/span><span class=\"n\">ch1<\/span>\r\n        <span class=\"n\">fmt<\/span><span class=\"o\">.<\/span><span class=\"n\">Println<\/span><span class=\"p\">(<\/span><span class=\"n\">msg<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"n\">done<\/span> <span class=\"o\">&lt;-<\/span> <span class=\"no\">true<\/span>\r\n    <span class=\"p\">}()<\/span>\r\n    <span class=\"k\">go<\/span> <span class=\"k\">func<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">ch1<\/span> <span class=\"o\">&lt;-<\/span> <span class=\"s\">\"apple\"<\/span>\r\n        <span class=\"n\">ch2<\/span> <span class=\"o\">&lt;-<\/span> <span class=\"s\">\"orange\"<\/span>\r\n    <span class=\"p\">}()<\/span>\r\n    <span class=\"n\">ch1<\/span> <span class=\"o\">&lt;-<\/span> <span class=\"s\">\"grape\"<\/span>\r\n    <span class=\"o\">&lt;-<\/span><span class=\"n\">done<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5b9e\u65bd\u6848\u4f8b<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>go run spawn3.go                                                                   \r\ngrape                                                                                         \r\norange                                                                                        \r\napple \r\n<\/code><\/pre>\n<p>\u5907\u6ce8\uff1b\u5173\u4e8e\u4e0a\u8ff0\u7a0b\u5e8f\uff0c\u5982\u679c\u4e0d\u52a0\u5165\u7b49\u5f85(done)\u7684\u8bdd\uff0c\u5728\u663e\u793agrape\u65f6\u7a0b\u5e8f\u4f1a\u7acb\u5373\u7ed3\u675f\u3002<\/p>\n<h1>\u5728Go\u8bed\u8a00\u4e2d\uff0c\u53d1\u751f\u6b7b\u9501\u4f1a\u4ea7\u751f\u9519\u8bef\u5417\uff1f<\/h1>\n<p>\u597d\u5427\uff0c\u4e00\u5f00\u59cb\u6211\u4eec\u5728crystal\u4e2d\u4f7f\u7528\u5c3a\u5bf8\u4e3a0\u7684\u901a\u9053\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">ch1<\/span> <span class=\"o\">=<\/span> <span class=\"no\">Channel<\/span><span class=\"p\">(<\/span><span class=\"no\">String<\/span><span class=\"p\">).<\/span><span class=\"nf\">new<\/span>\r\n<span class=\"n\">ch2<\/span> <span class=\"o\">=<\/span> <span class=\"no\">Channel<\/span><span class=\"p\">(<\/span><span class=\"no\">String<\/span><span class=\"p\">).<\/span><span class=\"nf\">new<\/span>\r\n<span class=\"err\">\u7565<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u76f4\u5230\u63a5\u6536\u5230\u901a\u9053\u540e\uff0c\u53d1\u9001\u65b9\u7684\u5904\u7406\u624d\u80fd\u7ee7\u7eed\u8fdb\u884c\uff08\u6362\u53e5\u8bdd\u8bf4\uff0c\u53d1\u9001\u65b9\u53ef\u4ee5\u963b\u585e\u5e76\u7b49\u5f85\u63a5\u6536\uff09\u3002\u5982\u679c\u5c06\u901a\u9053\u7684\u5927\u5c0f\u8bbe\u4e3a0\uff0c\u4e0a\u8ff0\u7a0b\u5e8f\u5c06\u663e\u793a&#8221;grape&#8221;\u5e76\u53d1\u751f\u6b7b\u9501\uff08\u76f4\u5230\u6309\u4e0bCtrl-C\u4e4b\u524d\uff0c\u5904\u7406\u4e0d\u4f1a\u8fd4\u56de\uff09\u3002<\/p>\n<p>\u7136\u800c\uff0c\u5728\u4e4b\u524d\u7684\u5e16\u5b50\u8bc4\u8bba\u4e2d\uff0c\u6709\u4eba\u6307\u51fa\u4f7f\u7528&#8221;go&#8221;\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002\u6211\u6253\u7b97\u8bd5\u4e00\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">package<\/span> <span class=\"n\">main<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"s\">\"fmt\"<\/span>\r\n\r\n<span class=\"k\">func<\/span> <span class=\"n\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">ch1<\/span> <span class=\"o\">:=<\/span> <span class=\"nb\">make<\/span><span class=\"p\">(<\/span><span class=\"k\">chan<\/span> <span class=\"kt\">string<\/span><span class=\"p\">,<\/span> <span class=\"m\">0<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">ch2<\/span> <span class=\"o\">:=<\/span> <span class=\"nb\">make<\/span><span class=\"p\">(<\/span><span class=\"k\">chan<\/span> <span class=\"kt\">string<\/span><span class=\"p\">,<\/span> <span class=\"m\">0<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">\u7565<\/span>\r\n<\/code><\/pre>\n<p>\u666e\u901a\u306bgo\u3067\u3082\u30b5\u30a4\u30ba\uff10\u306estring\u30c1\u30e3\u30cd\u30eb\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff08\u30d3\u30eb\u30c9\u3082\u3067\u304d\u3066\u52d5\u4f5c\u3082\u3057\u307e\u3059\uff09\u3002\u3053\u3053\u307e\u3067\u306f\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001<\/p>\n<p>\u6267\u884c\u5b9e\u4f8b<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>go build spawn3.go\r\n<span class=\"nv\">$ <\/span>.\/spawn3                                                                          \r\ngrape                                                                                         \r\nfatal error: all goroutines are asleep - deadlock!                                            \r\n\r\ngoroutine 1 <span class=\"o\">[<\/span>chan receive]:                                                                   \r\nmain.main<span class=\"o\">()<\/span>                                                                                   \r\n        \/Users\/xxx\/proj\/go\/src\/github.com\/tabetomo\/contest\/spawn3.go:23 +0x143          \r\n\r\ngoroutine 5 <span class=\"o\">[<\/span>chan receive]:                                                                   \r\nmain.main.func1<span class=\"o\">(<\/span>0xc42001a0c0, 0xc42001a120, 0xc42001a180<span class=\"o\">)<\/span>                                     \r\n        \/Users\/xxx\/proj\/go\/src\/github.com\/tabetomo\/contest\/spawn3.go:12 +0x145          \r\ncreated by main.main                                                                          \r\n        \/Users\/xxx\/proj\/go\/src\/github.com\/tabetomo\/contest\/spawn3.go:17 +0xbb           \r\n\r\ngoroutine 6 <span class=\"o\">[<\/span>chan send]:                                                                      \r\nmain.main.func2<span class=\"o\">(<\/span>0xc42001a0c0, 0xc42001a120<span class=\"o\">)<\/span>                                                   \r\n        \/Users\/xxx\/proj\/go\/src\/github.com\/tabetomo\/contest\/spawn3.go:19 +0x5a           \r\ncreated by main.main                                                                          \r\n        \/Users\/xxx\/proj\/go\/src\/github.com\/tabetomo\/contest\/spawn3.go:21 +0xe7 \r\n<\/code><\/pre>\n<p>\u5f53\u5728Go\u8bed\u8a00\u4e2d\u663e\u793agrape\u65f6\uff0c\u4f1a\u68c0\u6d4b\u5230\u6b7b\u9501\u5e76\u5bfc\u81f4\u8fd0\u884c\u65f6\u9519\u8bef\uff08fatal error: all goroutines are asleep &#8211; deadlock!\uff09\u3002\u6211\u4e0d\u77e5\u9053\u8fd9\u662f\u597d\u8fd8\u662f\u574f\uff0c\u4f46\u662f\u5f53\u6240\u6709goroutines\u90fd\u5904\u4e8e\u4f11\u7720\u72b6\u6001\u65f6\uff0c\u65e0\u6cd5\u505a\u4efb\u4f55\u5904\u7406\uff0c\u6240\u4ee5\u7ed3\u675f\u53ef\u80fd\u66f4\u597d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u4e4b\u524d\u7684\u5e16\u5b50\u4e2d\uff0c\u6211\u5c1d\u8bd5\u4e86Crystal\u3002\u5728\u8fd9\u4e2a\u94fe\u63a5\u4e2d\uff1ahttp:\/\/qiita.com\/tabetomo\/it [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-44291","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u7528Go\u8bed\u8a00\u8fdb\u884c spawn\uff08\u6d3e\u751f\uff09\u548c channel\uff08\u901a\u9053\uff09\u7684\u64cd\u4f5c - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u7528go\u8bed\u8a00\u8fdb\u884c-spawn\uff08\u6d3e\u751f\uff09\u548c-channel\uff08\u901a\u9053\uff09\u7684\u64cd\u4f5c\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u7528Go\u8bed\u8a00\u8fdb\u884c spawn\uff08\u6d3e\u751f\uff09\u548c channel\uff08\u901a\u9053\uff09\u7684\u64cd\u4f5c\" \/>\n<meta property=\"og:description\" content=\"\u5728\u4e4b\u524d\u7684\u5e16\u5b50\u4e2d\uff0c\u6211\u5c1d\u8bd5\u4e86Crystal\u3002\u5728\u8fd9\u4e2a\u94fe\u63a5\u4e2d\uff1ahttp:\/\/qiita.com\/tabetomo\/it [&hellip;]\" \/>\n<meta property=\"og:url\" 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