{"id":206897,"date":"2025-06-12T08:27:58","date_gmt":"2025-06-12T00:27:58","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206897\/"},"modified":"2025-06-12T08:27:58","modified_gmt":"2025-06-12T00:27:58","slug":"go-%e8%af%ad%e8%a8%80%e4%b8%ad%ef%bc%8c%e5%8a%a0%e9%94%81%e5%90%8e%e4%b8%ba%e4%bd%95%e4%be%9d%e7%84%b6%e4%bc%9a%e5%81%b6%e5%b0%94%e5%87%ba%e7%8e%b0%e9%80%9a%e9%81%93%e5%b7%b2%e5%85%b3%e9%97%ad","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206897\/","title":{"rendered":"Go \u8bed\u8a00\u4e2d\uff0c\u52a0\u9501\u540e\u4e3a\u4f55\u4f9d\u7136\u4f1a\u5076\u5c14\u51fa\u73b0\u901a\u9053\u5df2\u5173\u95ed\u7684\u5f02\u5e38\uff1f"},"content":{"rendered":"<p>\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca\u8273\u6240\u6709\u4eba\uff01\u54c8\u54c8\uff0c\u5c0f\u4f19\u4f34\u4eec\u53c8\u6765\u5b66\u4e60\u5566~\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aGo \u8bed\u8a00\u4e2d\uff0c\u52a0\u9501\u540e\u4e3a\u4f55\u4f9d\u7136\u4f1a\u5076\u5c14\u51fa\u73b0\u901a\u9053\u5df2\u5173\u95ed\u7684\u5f02\u5e38\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u4e0d\u77e5\u9053\u5927\u5bb6\u5bf9\u5176\u90fd\u6709\u591a\u5c11\u4e86\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u4e00\u8d77\u6765\u770b\u4e00\u5427\uff01\u5f53\u7136\uff0c\u975e\u5e38\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u8bc4\u8bba\uff0c\u7ed9\u51fa\u5408\u7406\u7684\u5efa\u8bae\uff0c\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\uff0c\u4e00\u8d77\u8fdb\u6b65\uff01,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241127\/17327050616746fb2562cd7.jpg\" class=\"aligncenter\">,<br \/>\n<strong>\u4e3a\u4f55\u52a0\u9501\u540e\u4f9d\u7136\u4f1a\u5076\u5c14\u62a5\u901a\u9053\u5df2\u5173\u95ed\u7684\u5f02\u5e38\uff1f<\/strong>,\u5728\u95ee\u9898\u4ee3\u7801\u4e2d\uff0c\u5f15\u5165\u4e86\u9501\u673a\u5236\u6765\u786e\u4fdd\u64cd\u4f5c\u901a\u9053\u7684\u540c\u6b65\u6027\u3002\u7136\u800c\uff0c\u5076\u5c14\u8fd8\u4f1a\u51fa\u73b0 &#8220;panic: send on closed channel&#8221; \u7684\u5f02\u5e38\u3002\u8fd9\u662f\u4ec0\u4e48\u539f\u56e0\u5bfc\u81f4\u7684\u5462\uff1f,\u6839\u636e Go \u8bed\u8a00\u89c4\u8303\uff0c\u9009\u62e9\u5668\u4e2d\u540c\u65f6\u6ee1\u8db3\u6761\u4ef6\u7684\u591a\u4e2a\u64cd\u4f5c\uff0c\u4f1a\u88ab\u968f\u673a\u9009\u62e9\u4e00\u4e2a\u6267\u884c\u3002\u56e0\u6b64\uff0c\u5373\u4f7f\u901a\u9053\u88ab\u5173\u95ed\uff0ccase c &lt; -id \u64cd\u4f5c\u4f9d\u7136\u6709\u6982\u7387\u6267\u884c\uff0c\u4ece\u800c\u5bfc\u81f4\u53d1\u9001\u64cd\u4f5c\u5931\u8d25\u5e76\u5f15\u53d1\u5f02\u5e38\u3002,\u5177\u4f53\u6765\u8bf4\uff0c\u9009\u62e9\u5668\u4e2d\u7684 case &lt;-ctx.Done() \u5e76\u4e0d\u80fd\u963b\u6b62 case c &lt; -id \u7684\u6267\u884c\u3002\u56e0\u4e3a\u5373\u4f7f\u901a\u9053\u5df2\u5173\u95ed\uff0ccase c &lt; -id \u4ecd\u80fd\u6ee1\u8db3\u9009\u62e9\u6761\u4ef6\uff08\u5373\u53d1\u9001\u64cd\u4f5c\u53ef\u884c\uff09\u3002\u56e0\u6b64\uff0c\u9009\u62e9\u5668\u4f1a\u5728 &lt;-ctx.Done() \u548c c &lt; -id \u4e2d\u968f\u673a\u9009\u62e9\u4e00\u4e2a\u6267\u884c\u3002,\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ef\u4ee5\u4f7f\u7528 lock.RLock() \u8fdb\u884c\u8bfb\u9501\uff0c\u5728\u8fdb\u5165\u9009\u62e9\u5668\u524d\u68c0\u67e5\u901a\u9053\u72b6\u6001\u3002\u5982\u679c\u901a\u9053\u5df2\u5173\u95ed\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\u5373\u53ef\u3002,\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aGo \u8bed\u8a00\u4e2d\uff0c\u52a0\u9501\u540e\u4e3a\u4f55\u4f9d\u7136\u4f1a\u5076\u5c14\u51fa\u73b0\u901a\u9053\u5df2\u5173\u95ed\u7684\u5f02\u5e38\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~GOLANG\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03GOLANG\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01,\u4e3a\u4f55\u52a0\u9501\u540e\u4f9d\u7136\u4f1a\u5076\u5c14\u62a5\u901a\u9053\u5df2\u5173\u95ed\u7684\u5f02\u5e38\uff1f,\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca\u8273\u6240\u6709\u4eba\uff01\u54c8\u54c8\uff0c\u5c0f\u4f19\u4f34\u4eec\u53c8\u6765\u5b66\u4e60\u5566~\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aGo \u8bed\u8a00\u4e2d\uff0c\u52a0\u9501\u540e\u4e3a\u4f55\u4f9d\u7136\u4f1a\u5076\u5c14\u51fa\u73b0\u901a\u9053\u5df2\u5173\u95ed\u7684\u5f02\u5e38\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u4e0d\u77e5\u9053\u5927\u5bb6\u5bf9\u5176\u90fd\u6709\u591a\u5c11\u4e86\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u4e00\u8d77\u6765\u770b\u4e00\u5427\uff01\u5f53\u7136\uff0c\u975e\u5e38\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u8bc4\u8bba\uff0c\u7ed9\u51fa\u5408\u7406\u7684\u5efa\u8bae\uff0c\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\uff0c\u4e00\u8d77\u8fdb\u6b65\uff01,<br \/>\n<b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span> <span>Go \u8bed\u8a00\u4e2d\uff0c\u52a0\u9501\u540e\u4e3a\u4f55\u4f9d\u7136\u4f1a\u5076\u5c14\u51fa\u73b0\u901a\u9053\u5df2\u5173\u95ed\u7684\u5f02\u5e38\uff1f<\/span><\/p>\n<h1>Go \u8bed\u8a00\u4e2d\uff0c\u52a0\u9501\u540e\u4e3a\u4f55\u4f9d\u7136\u4f1a\u5076\u5c14\u51fa\u73b0\u901a\u9053\u5df2\u5173\u95ed\u7684\u5f02\u5e38\uff1f<\/h1>\n<p><span>2024-11-27 18:57:57<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca\u8273\u6240\u6709\u4eba\uff01\u54c8\u54c8\uff0c\u5c0f\u4f19\u4f34\u4eec\u53c8\u6765\u5b66\u4e60\u5566~\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aGo \u8bed\u8a00\u4e2d\uff0c\u52a0\u9501\u540e\u4e3a\u4f55\u4f9d\u7136\u4f1a\u5076\u5c14\u51fa\u73b0\u901a\u9053\u5df2\u5173\u95ed\u7684\u5f02\u5e38\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u4e0d\u77e5\u9053\u5927\u5bb6\u5bf9\u5176\u90fd\u6709\u591a\u5c11\u4e86\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u4e00\u8d77\u6765\u770b\u4e00\u5427\uff01\u5f53\u7136\uff0c\u975e\u5e38\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u8bc4\u8bba\uff0c\u7ed9\u51fa\u5408\u7406\u7684\u5efa\u8bae\uff0c\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\uff0c\u4e00\u8d77\u8fdb\u6b65\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241127\/17327050616746fb2562cd7.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u4e3a\u4f55\u52a0\u9501\u540e\u4f9d\u7136\u4f1a\u5076\u5c14\u62a5\u901a\u9053\u5df2\u5173\u95ed\u7684\u5f02\u5e38\uff1f<\/strong><\/p>\n<p>\u5728\u95ee\u9898\u4ee3\u7801\u4e2d\uff0c\u5f15\u5165\u4e86\u9501\u673a\u5236\u6765\u786e\u4fdd\u64cd\u4f5c\u901a\u9053\u7684\u540c\u6b65\u6027\u3002\u7136\u800c\uff0c\u5076\u5c14\u8fd8\u4f1a\u51fa\u73b0 &#8220;panic: send on closed channel&#8221; \u7684\u5f02\u5e38\u3002\u8fd9\u662f\u4ec0\u4e48\u539f\u56e0\u5bfc\u81f4\u7684\u5462\uff1f<\/p>\n<p>\u6839\u636e Go \u8bed\u8a00\u89c4\u8303\uff0c\u9009\u62e9\u5668\u4e2d\u540c\u65f6\u6ee1\u8db3\u6761\u4ef6\u7684\u591a\u4e2a\u64cd\u4f5c\uff0c\u4f1a\u88ab\u968f\u673a\u9009\u62e9\u4e00\u4e2a\u6267\u884c\u3002\u56e0\u6b64\uff0c\u5373\u4f7f\u901a\u9053\u88ab\u5173\u95ed\uff0ccase c &lt; -id \u64cd\u4f5c\u4f9d\u7136\u6709\u6982\u7387\u6267\u884c\uff0c\u4ece\u800c\u5bfc\u81f4\u53d1\u9001\u64cd\u4f5c\u5931\u8d25\u5e76\u5f15\u53d1\u5f02\u5e38\u3002<\/p>\n<p>\u5177\u4f53\u6765\u8bf4\uff0c\u9009\u62e9\u5668\u4e2d\u7684 case &lt;-ctx.Done() \u5e76\u4e0d\u80fd\u963b\u6b62 case c &lt; -id \u7684\u6267\u884c\u3002\u56e0\u4e3a\u5373\u4f7f\u901a\u9053\u5df2\u5173\u95ed\uff0ccase c &lt; -id \u4ecd\u80fd\u6ee1\u8db3\u9009\u62e9\u6761\u4ef6\uff08\u5373\u53d1\u9001\u64cd\u4f5c\u53ef\u884c\uff09\u3002\u56e0\u6b64\uff0c\u9009\u62e9\u5668\u4f1a\u5728 &lt;-ctx.Done() \u548c c &lt; -id \u4e2d\u968f\u673a\u9009\u62e9\u4e00\u4e2a\u6267\u884c\u3002<\/p>\n<p>\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ef\u4ee5\u4f7f\u7528 lock.RLock() \u8fdb\u884c\u8bfb\u9501\uff0c\u5728\u8fdb\u5165\u9009\u62e9\u5668\u524d\u68c0\u67e5\u901a\u9053\u72b6\u6001\u3002\u5982\u679c\u901a\u9053\u5df2\u5173\u95ed\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\u5373\u53ef\u3002<\/p>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aGo \u8bed\u8a00\u4e2d\uff0c\u52a0\u9501\u540e\u4e3a\u4f55\u4f9d\u7136\u4f1a\u5076\u5c14\u51fa\u73b0\u901a\u9053\u5df2\u5173\u95ed\u7684\u5f02\u5e38\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~GOLANG\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03GOLANG\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   uniapp\u4e0b\u8f7d\u6587\u4ef6\u7c7b\u578b\u4e0d\u7b26\uff0cdocx\u53d8pdf\u600e\u4e48\u529e\uff1f\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5728Linux\u7cfb\u7edf\u4e0a\u6269\u5c55swap\u7a7a\u95f4\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca&#46;&#46;&#46;<\/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-206897","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206897","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=206897"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206897\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}