{"id":2638,"date":"2019-01-02T19:30:09","date_gmt":"2019-01-02T11:30:09","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=2638"},"modified":"2019-01-02T19:36:42","modified_gmt":"2019-01-02T11:36:42","slug":"%e6%b7%b1%e5%85%a5%e5%ad%a6%e4%b9%a0golang-channel","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/2638","title":{"rendered":"\u6df1\u5165\u5b66\u4e60golang\u2014channel"},"content":{"rendered":"

1. \u6982\u8ff0<\/h2>\n

\u201c\u7f51\u7edc\uff0c\u5e76\u53d1\u201d\u662fGo\u8bed\u8a00\u7684\u4e24\u5927feature\u3002Go\u8bed\u8a00\u53f7\u79f0\u201c\u4e92\u8054\u7f51\u7684C\u8bed\u8a00\u201d\uff0c\u4e0e\u4f7f\u7528\u4f20\u7edf\u7684C\u8bed\u8a00\u76f8\u6bd4\uff0c\u5199\u4e00\u4e2aServer\u6240\u4f7f\u7528\u7684\u4ee3\u7801\u66f4\u5c11\uff0c\u4e5f\u66f4\u7b80\u5355\u3002\u5199\u4e00\u4e2aServer\u9664\u4e86\u7f51\u7edc\uff0c\u53e6\u5916\u5c31\u662f\u5e76\u53d1\uff0c\u76f8\u5bf9python\u7b49\u5176\u5b83\u8bed\u8a00\uff0cGo\u5bf9\u5e76\u53d1\u652f\u6301\u4f7f\u5f97\u5b83\u6709\u66f4\u597d\u7684\u6027\u80fd\u3002<\/p>\n

Goroutine\u548cchannel\u662fGo\u5728\u201c\u5e76\u53d1\u201d\u65b9\u9762\u4e24\u4e2a\u6838\u5fc3feature\u3002<\/p>\n

Channel\u662fgoroutine\u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\u7684\u4e00\u79cd\u65b9\u5f0f\uff0c\u5b83\u4e0eUnix\u4e2d\u7684\u7ba1\u9053\u7c7b\u4f3c\u3002<\/p>\n

Channel\u58f0\u660e\uff1a<\/p>\n

ChannelType\u00a0=\u00a0( “chan” | “chan” “<-” | “<-” “chan” )\u00a0ElementType\u00a0.<\/p>\n

\u4f8b\u5982\uff1a<\/p>\n

var\u00a0ch\u00a0chan\u00a0int\r\nvar\u00a0ch1\u00a0chan<-\u00a0int\u00a0\u00a0\/\/ch1\u53ea\u80fd\u5199\r\nvar\u00a0ch2 <-chan\u00a0int\u00a0\u00a0\/\/ch2\u53ea\u80fd\u8bfb<\/pre>\n
 <\/p>\n
channel\u662f\u7c7b\u578b\u76f8\u5173\u7684\uff0c\u4e5f\u5c31\u662f\u4e00\u4e2achannel\u53ea\u80fd\u4f20\u9012\u4e00\u79cd\u7c7b\u578b\u3002\u4f8b\u5982\uff0c\u4e0a\u9762\u7684ch\u53ea\u80fd\u4f20\u9012int\u3002<\/p>\n
\u5728go\u8bed\u8a00\u4e2d\uff0c\u67094\u79cd\u5f15\u7528\u7c7b\u578b\uff1aslice\uff0cmap\uff0cchannel\uff0cinterface\u3002<\/p>\n
Slice\uff0cmap\uff0cchannel\u4e00\u822c\u90fd\u901a\u8fc7make\u8fdb\u884c\u521d\u59cb\u5316\uff1a<\/p>\n
ci :=\u00a0make(chan\u00a0int)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0unbuffered\u00a0channel of integers\r\ncj\u00a0:=\u00a0make(chan\u00a0int, 0)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0unbuffered\u00a0channel of integers\r\ncs\u00a0:=\u00a0make(chan\u00a0*os.File, 100)\u00a0\u00a0\/\/ buffered channel of pointers to Files<\/pre>\n
\u521b\u5efachannel\u65f6\u53ef\u4ee5\u63d0\u4f9b\u4e00\u4e2a\u53ef\u9009\u7684\u6574\u578b\u53c2\u6570\uff0c\u7528\u4e8e\u8bbe\u7f6e\u8be5channel\u7684\u7f13\u51b2\u533a\u5927\u5c0f\u3002\u8be5\u503c\u7f3a\u7701\u4e3a0\uff0c\u7528\u6765\u6784\u5efa\u9ed8\u8ba4\u7684\u201c\u65e0\u7f13\u51b2channel\u201d\uff0c\u4e5f\u79f0\u4e3a\u201c\u540c\u6b65channel\u201d\u3002<\/p>\n
Channel\u4f5c\u4e3agoroutine\u95f4\u7684\u4e00\u79cd\u901a\u4fe1\u673a\u5236\uff0c\u4e0e\u64cd\u4f5c\u7cfb\u7edf\u7684\u5176\u5b83\u901a\u4fe1\u673a\u5236\u7c7b\u4f3c\uff0c\u4e00\u822c\u6709\u4e24\u4e2a\u76ee\u7684\uff1a\u540c\u6b65\uff0c\u6216\u8005\u4f20\u9012\u6d88\u606f\u3002<\/p>\n
2. \u540c\u6b65<\/h2>\n
c\u00a0:= make(chan\u00a0int)\u00a0\u00a0\/\/ Allocate a channel.\r\n\/\/ Start the sort in a\u00a0goroutine; when it completes, signal on the channel.\r\ngo\u00a0func() {\r\n\u00a0\u00a0\u00a0\u00a0list.Sort()\r\n\u00a0\u00a0\u00a0\u00a0c\u00a0<- 1\u00a0\u00a0\/\/ Send a signal; value does not matter.\r\n}()\r\ndoSomethingForAWhile()\r\n<-c\u00a0\u00a0\u00a0\/\/ Wait for sort to finish; discard sent value.<\/pre>\n
\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u5728\u5b50goroutine\u4e2d\u8fdb\u884c\u6392\u5e8f\u64cd\u4f5c\uff0c\u4e3bgoroutine\u53ef\u4ee5\u505a\u4e00\u4e9b\u522b\u7684\u4e8b\u60c5\uff0c\u7136\u540e\u7b49\u5f85\u5b50goroutine\u5b8c\u6210\u6392\u5e8f\u3002<\/p>\n
\u63a5\u6536\u65b9\u4f1a\u4e00\u76f4\u963b\u585e\u76f4\u5230\u6709\u6570\u636e\u5230\u6765\u3002\u5982\u679cchannel\u662f\u65e0\u7f13\u51b2\u7684\uff0c\u53d1\u9001\u65b9\u4f1a\u4e00\u76f4\u963b\u585e\u76f4\u5230\u63a5\u6536\u65b9\u5c06\u6570\u636e\u53d6\u51fa\u3002\u5982\u679cchannel\u5e26\u6709\u7f13\u51b2\u533a\uff0c\u53d1\u9001\u65b9\u4f1a\u4e00\u76f4\u963b\u585e\u76f4\u5230\u6570\u636e\u88ab\u62f7\u8d1d\u5230\u7f13\u51b2\u533a\uff1b\u5982\u679c\u7f13\u51b2\u533a\u5df2\u6ee1\uff0c\u5219\u53d1\u9001\u65b9\u53ea\u80fd\u5728\u63a5\u6536\u65b9\u53d6\u8d70\u6570\u636e\u540e\u624d\u80fd\u4ece\u963b\u585e\u72b6\u6001\u6062\u590d\u3002<\/p>\n
3. \u6d88\u606f\u4f20\u9012<\/h2>\n
\u6211\u4eec\u6765\u6a21\u62df\u4e00\u4e0b\u7ecf\u5178\u7684\u751f\u4ea7\u8005\uff0d\u6d88\u8d39\u8005\u6a21\u578b\u3002<\/p>\n
func\u00a0Producer (queue\u00a0chan<-\u00a0int){\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for\u00a0i:= 0;\u00a0i\u00a0< 10;\u00a0i++ {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0queue\u00a0<-\u00a0i\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\r\n}\r\n\r\nfunc\u00a0Consumer( queue <-chan\u00a0int){\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for\u00a0i\u00a0:=0;\u00a0i\u00a0< 10;\u00a0i++{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0v\u00a0:= <- queue\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fmt.Println(\"receive:\", v)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\r\n}\r\n\r\nfunc\u00a0main(){\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0queue\u00a0:= make(chan\u00a0int, 1)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0go\u00a0Producer(queue)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0go\u00a0Consumer(queue)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0time.Sleep(1e9) \/\/\u8ba9Producer\u4e0eConsumer\u5b8c\u6210\r\n}<\/pre>\n
\u4e0a\u9762\u7684\u793a\u4f8b\u5728Producer\u4e2d\u751f\u6210\u6570\u636e\uff0c\u5728Consumer\u4e2d\u5904\u7406\u6570\u636e\u3002<\/p>\n
 <\/p>\n
4. Server\u7f16\u7a0b\u6a21\u578b<\/h2>\n
\u5728server\u7f16\u7a0b\uff0c\u4e00\u79cd\u5e38\u7528\u7684\u6a21\u578b\uff1a\u4e3b\u7ebf\u7a0b\u63a5\u6536\u8bf7\u6c42\uff0c\u7136\u540e\u5c06\u8bf7\u6c42\u5206\u53d1\u7ed9\u5de5\u4f5c\u7ebf\u7a0b\uff0c\u5de5\u4f5c\u7ebf\u7a0b\u5b8c\u6210\u8bf7\u6c42\u5904\u7406\u3002\u7528go\u6765\u5b9e\u73b0\uff0c\u5982\u4e0b\uff1a<\/p>\n
func\u00a0handle(r *Request) {\r\n\u00a0\u00a0\u00a0\u00a0process(r)\u00a0\u00a0\/\/ May take a long time.\r\n}\r\n\r\nfunc\u00a0Serve(queue\u00a0chan\u00a0*Request) {\r\n\u00a0\u00a0\u00a0\u00a0for\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0req\u00a0:= <-queue\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0go\u00a0handle(req)\u00a0\u00a0\/\/ Don't wait for handle to finish.\r\n\u00a0\u00a0\u00a0\u00a0}\r\n}<\/pre>\n
 <\/p>\n
\u4e00\u822c\u6765\u8bf4\uff0cserver\u7684\u5904\u7406\u80fd\u529b\u4e0d\u662f\u65e0\u9650\u7684\uff0c\u6240\u4ee5\uff0c\u6709\u5fc5\u8981\u9650\u5236\u7ebf\u7a0b\uff08\u6216\u8005goroutine\uff09\u7684\u6570\u91cf\u3002\u5728C\/C++\u7f16\u7a0b\u4e2d\uff0c\u6211\u4eec\u4e00\u822c\u901a\u8fc7\u4fe1\u53f7\u91cf\u6765\u5b9e\u73b0\uff0c\u5728go\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7channel\u8fbe\u5230\u540c\u6837\u7684\u6548\u679c\uff1a<\/p>\n
var\u00a0sem\u00a0= make(chan\u00a0int,\u00a0MaxOutstanding)\r\nfunc\u00a0handle(r *Request) {\r\n\u00a0\u00a0\u00a0\u00a0sem\u00a0<- 1\u00a0\u00a0\u00a0\u00a0\/\/ Wait for active queue to drain.\r\n\u00a0\u00a0\u00a0\u00a0process(r)\u00a0\u00a0\/\/ May take a long time.\r\n\u00a0\u00a0\u00a0\u00a0<-sem\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/ Done; enable next request to run.\r\n}\r\n\r\nfunc\u00a0Serve(queue\u00a0chan\u00a0*Request) {\r\n\u00a0\u00a0\u00a0\u00a0for\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0req\u00a0:= <-queue\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0go\u00a0handle(req)\u00a0\u00a0\/\/ Don't wait for handle to finish.\r\n\u00a0\u00a0\u00a0\u00a0}\r\n}<\/pre>\n
\u6211\u4eec\u901a\u8fc7\u5f15\u5165sem\u00a0channel\uff0c\u9650\u5236\u4e86\u540c\u65f6\u6700\u591a\u53ea\u6709MaxOutstanding\u4e2agoroutine\u8fd0\u884c\u3002\u4f46\u662f\uff0c\u4e0a\u9762\u7684\u505a\u6cd5\uff0c\u53ea\u662f\u9650\u5236\u4e86\u8fd0\u884c\u7684goroutine\u7684\u6570\u91cf\uff0c\u5e76\u6ca1\u6709\u9650\u5236goroutine\u7684\u751f\u6210\u6570\u91cf\u3002\u5982\u679c\u8bf7\u6c42\u5230\u6765\u7684\u901f\u5ea6\u8fc7\u5feb\uff0c\u4f1a\u5bfc\u81f4\u4ea7\u751f\u5927\u91cf\u7684goroutine\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u7cfb\u7edf\u8d44\u6e90\u6d88\u8017\u5b8c\u5168\u3002<\/p>\n
\u4e3a\u6b64\uff0c\u6211\u4eec\u6709\u5fc5\u8981\u9650\u5236goroutine\u7684\u521b\u5efa\u6570\u91cf\uff1a<\/p>\n
func\u00a0Serve(queue\u00a0chan\u00a0*Request) {\r\n\u00a0\u00a0\u00a0\u00a0for\u00a0req\u00a0:= range queue {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sem\u00a0<- 1\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0go\u00a0func() {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0process(req) \/\/ Buggy; see explanation below.\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<-sem\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}()\r\n\u00a0\u00a0\u00a0\u00a0}\r\n}<\/pre>\n
\u4e0a\u9762\u7684\u4ee3\u7801\u770b\u4f3c\u7b80\u5355\u6e05\u6670\uff0c\u4f46\u5728go\u4e2d\uff0c\u5374\u6709\u4e00\u4e2a\u95ee\u9898\u3002Go\u8bed\u8a00\u4e2d\u7684\u5faa\u73af\u53d8\u91cf\u6bcf\u6b21\u8fed\u4ee3\u4e2d\u662f\u91cd\u7528\u7684\uff0c\u66f4\u76f4\u63a5\u7684\u8bf4\u5c31\u662freq\u5728\u6240\u6709\u7684\u5b50goroutine\u4e2d\u662f\u5171\u4eab\u7684\uff0c\u4ece\u53d8\u91cf\u7684\u4f5c\u7528\u57df\u89d2\u5ea6\u6765\u8bf4\uff0c\u53d8\u91cfreq\u5bf9\u4e8e\u6240\u6709\u7684goroutine\uff0c\u662f\u5168\u5c40\u7684\u3002<\/p>\n
\u8fd9\u4e2a\u95ee\u9898\u5c5e\u4e8e\u8bed\u8a00\u5b9e\u73b0\u7684\u8303\u7574\uff0c\u5728C\u8bed\u8a00\u4e2d\uff0c\u4f60\u4e0d\u5e94\u8be5\u5c06\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf\u4f20\u9012\u7ed9\u53e6\u5916\u4e00\u4e2a\u7ebf\u7a0b\u53bb\u5904\u7406\u3002\u6709\u5f88\u591a\u89e3\u51b3\u65b9\u6cd5\uff0c\u8fd9\u91cc<\/a>\u6709\u4e00\u4e2a\u8ba8\u8bba\u3002\u4ece\u4e2a\u4eba\u89d2\u5ea6\u6765\u8bf4\uff0c\u6211\u66f4\u503e\u5411\u4e0b\u9762\u8fd9\u79cd\u65b9\u5f0f\uff1a<\/p>\n
func\u00a0Serve(queue\u00a0chan\u00a0*Request) {\r\n\u00a0\u00a0\u00a0\u00a0for\u00a0req\u00a0:= range queue {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sem\u00a0<- 1\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0go\u00a0func(r *Request) {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0process(r)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<-sem\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}(req)\r\n\u00a0\u00a0\u00a0\u00a0}\r\n}<\/pre>\n
\u81f3\u5c11\uff0c\u8fd9\u6837\u7684\u4ee3\u7801\u4e0d\u4f1a\u8ba9\u4e00\u4e2ago\u7684\u521d\u5b66\u8005\u4e0d\u4f1a\u8ff7\u7cca\uff0c\u53e6\u5916\uff0c\u4ece\u53d8\u91cf\u7684\u4f5c\u7528\u57df\u89d2\u5ea6\uff0c\u4e5f\u66f4\u7b26\u5408\u5e38\u7406\u4e00\u4e9b\u3002<\/p>\n
 <\/p>\n
\u5728\u5b9e\u9645\u7684C\/C++\u7f16\u7a0b\u4e2d\uff0c\u6211\u4eec\u503e\u5411\u4e8e\u5de5\u4f5c\u7ebf\u7a0b\u5728\u4e00\u5f00\u59cb\u5c31\u521b\u5efa\u597d\uff0c\u800c\u4e14\u7ebf\u7a0b\u7684\u6570\u91cf\u4e5f\u662f\u56fa\u5b9a\u7684\u3002\u5728go\u4e2d\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a<\/p>\n
func\u00a0handle(queue\u00a0chan\u00a0*Request) {\r\n\u00a0\u00a0\u00a0\u00a0for\u00a0r := range queue {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0process(r)\r\n\u00a0\u00a0\u00a0\u00a0}\r\n}\r\n\r\nfunc\u00a0Serve(clientRequests\u00a0chan\u00a0*Request, quit\u00a0chan\u00a0bool) {\r\n\u00a0\u00a0\u00a0\u00a0\/\/ Start handlers\r\n\u00a0\u00a0\u00a0\u00a0for\u00a0i\u00a0:= 0;\u00a0i\u00a0<\u00a0MaxOutstanding;\u00a0i++ {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0go\u00a0handle(clientRequests)\r\n\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0<-quit\u00a0\u00a0\/\/ Wait to be told to exit.\r\n}<\/pre>\n
\u5f00\u59cb\u5c31\u542f\u52a8\u56fa\u5b9a\u6570\u91cf\u7684handle\u00a0goroutine\uff0c\u6bcf\u4e2agoroutine\u90fd\u76f4\u63a5\u4ecechannel\u4e2d\u8bfb\u53d6\u8bf7\u6c42\u3002\u8fd9\u79cd\u5199\u6cd5\u6bd4\u8f83\u7b80\u5355\uff0c\u4f46\u662f\u4e0d\u77e5\u9053\u6709\u6ca1\u6709\u201c\u60ca\u7fa4\u201d\u95ee\u9898\uff1f\u6709\u5f85\u540e\u7eed\u5206\u6790goroutine\u7684\u5b9e\u73b0\u3002<\/p>\n
 <\/p>\n
5. \u4f20\u9012channel\u7684channel<\/h2>\n
channel\u4f5c\u4e3ago\u8bed\u8a00\u7684\u4e00\u79cd\u539f\u751f\u7c7b\u578b\uff0c\u81ea\u7136\u53ef\u4ee5\u901a\u8fc7channel\u8fdb\u884c\u4f20\u9012\u3002\u901a\u8fc7channel\u4f20\u9012channel\uff0c\u53ef\u4ee5\u975e\u5e38\u7b80\u5355\u4f18\u7f8e\u7684\u89e3\u51b3\u4e00\u4e9b\u5b9e\u9645\u4e2d\u7684\u95ee\u9898\u3002<\/p>\n
\u5728\u4e0a\u4e00\u8282\u4e2d\uff0c\u6211\u4eec\u4e3bgoroutine\u901a\u8fc7channel\u5c06\u8bf7\u6c42\u4f20\u9012\u7ed9\u5de5\u4f5cgoroutine\u3002\u540c\u6837\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u901a\u8fc7channel\u5c06\u5904\u7406\u7ed3\u679c\u8fd4\u56de\u7ed9\u4e3bgoroutine\u3002<\/p>\n
\u4e3bgoroutine\uff1a<\/p>\n
type\u00a0Request\u00a0struct\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0args\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0[]int\r\n\u00a0\u00a0\u00a0\u00a0resultChan\u00a0\u00a0chan\u00a0int\r\n}\r\n\r\nrequest\u00a0:= &Request{[]int{3, 4, 5}, make(chan\u00a0int)}\r\n\/\/ Send request\r\nclientRequests\u00a0<- request\r\n\/\/ Wait for response.\r\nfmt.Printf(\"answer: %d\\n\", <-request.resultChan)<\/pre>\n
\u4e3bgoroutine\u5c06\u8bf7\u6c42\u53d1\u7ed9request channel\uff0c\u7136\u540e\u7b49\u5f85result channel\u3002\u5b50goroutine\u5b8c\u6210\u5904\u7406\u540e\uff0c\u5c06\u7ed3\u679c\u5199\u5230result channel\u3002<\/p>\n
func\u00a0handle(queue\u00a0chan\u00a0*Request) {\r\n\u00a0\u00a0\u00a0\u00a0for\u00a0req\u00a0:= range queue {\r\n\u00a0result\u00a0:=\u00a0do_something()\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0req.resultChan\u00a0<- result\r\n\u00a0\u00a0\u00a0\u00a0}\r\n}<\/pre>\n
6. \u591a\u4e2achannel<\/h2>\n
\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\uff0c\u7ecf\u5e38\u4f1a\u9047\u5230\u5728\u4e00\u4e2agoroutine\u4e2d\u5904\u7406\u591a\u4e2achannel\u7684\u60c5\u51b5\u3002\u6211\u4eec\u4e0d\u53ef\u80fd\u963b\u585e\u5728\u4e24\u4e2achannel\uff0c\u8fd9\u65f6\u5c31\u8be5select\u573a\u4e86\u3002\u4e0eC\u8bed\u8a00\u4e2d\u7684select\u53ef\u4ee5\u76d1\u63a7\u591a\u4e2afd\u4e00\u6837\uff0cgo\u8bed\u8a00\u4e2dselect\u53ef\u4ee5\u7b49\u5f85\u591a\u4e2achannel\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0c1 :=\u00a0make(chan\u00a0string)\r\n\u00a0\u00a0\u00a0\u00a0c2 :=\u00a0make(chan\u00a0string)\r\n\u00a0\u00a0\u00a0\u00a0go\u00a0func() {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0time.Sleep(time.Second\u00a0* 1)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0c1 <- \"one\"\r\n\u00a0\u00a0\u00a0\u00a0}()\r\n\u00a0\u00a0\u00a0\u00a0go\u00a0func() {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0time.Sleep(time.Second\u00a0* 2)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0c2 <- \"two\"\r\n\u00a0\u00a0\u00a0\u00a0}()\r\n\u00a0\u00a0\u00a0\u00a0for\u00a0i\u00a0:= 0;\u00a0i\u00a0< 2;\u00a0i++ {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0select\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0case\u00a0msg1 := <-c1:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fmt.Println(\"received\", msg1)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0case\u00a0msg2 := <-c2:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fmt.Println(\"received\", msg2)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0}<\/pre>\n
\u5728C\u4e2d\uff0c\u6211\u4eec\u4e00\u822c\u90fd\u4f1a\u4f20\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\u7ed9select\u51fd\u6570\uff0cgo\u8bed\u8a00\u4e2d\u7684select\u6ca1\u6709\u8be5\u53c2\u6570\uff0c\u76f8\u5f53\u4e8e\u8d85\u65f6\u65f6\u95f4\u4e3a0\u3002<\/p>\n
 <\/p>\n
\u4e3b\u8981\u53c2\u8003<\/p>\n
https:\/\/golang.org\/doc\/effective_go.html<\/p>\n
\u4f5c\u8005\uff1aYY\u54e5
\n\u51fa\u5904\uff1ahttp:\/\/www.cnblogs.com\/hustcat\/<\/a>
\n\u672c\u6587\u7248\u6743\u5f52\u4f5c\u8005\u548c\u535a\u5ba2\u56ed\u5171\u6709\uff0c\u6b22\u8fce\u8f6c\u8f7d\uff0c\u4f46\u672a\u7ecf\u4f5c\u8005\u540c\u610f\u5fc5\u987b\u4fdd\u7559\u6b64\u6bb5\u58f0\u660e\uff0c\u4e14\u5728\u6587\u7ae0\u9875\u9762\u660e\u663e\u4f4d\u7f6e\u7ed9\u51fa\u539f\u6587\u8fde\u63a5\uff0c\u5426\u5219\u4fdd\u7559\u8ffd\u7a76\u6cd5\u5f8b\u8d23\u4efb\u7684\u6743\u5229\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
1. \u6982\u8ff0 \u201c\u7f51\u7edc\uff0c\u5e76\u53d1\u201d\u662fGo\u8bed\u8a00\u7684\u4e24<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[122],"class_list":["post-2638","post","type-post","status-publish","format-standard","hentry","tag-06-godocker"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/2638","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=2638"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/2638\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=2638"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=2638"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=2638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}