{"id":324717,"date":"2021-02-06T10:26:44","date_gmt":"2021-02-06T02:26:44","guid":{"rendered":"http:\/\/4563.org\/?p=324717"},"modified":"2021-02-06T10:26:44","modified_gmt":"2021-02-06T02:26:44","slug":"golang-%e5%a4%9a%e4%b8%aa%e5%8d%8f%e7%a8%8b%e4%b8%ad-%e8%af%bb%e5%8f%96%e5%90%8c%e4%b8%80%e4%b8%aa-channel%ef%bc%8c%e6%80%8e%e4%b9%88%e4%b8%8d%e6%98%af%e6%8c%89%e9%a1%ba%e5%ba%8f%e6%89%93%e5%8d%b0","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=324717","title":{"rendered":"golang \u591a\u4e2a\u534f\u7a0b\u4e2d \u8bfb\u53d6\u540c\u4e00\u4e2a channel\uff0c\u600e\u4e48\u4e0d\u662f\u6309\u987a\u5e8f\u6253\u5370"},"content":{"rendered":"
\n
\n
\n

golang \u591a\u4e2a\u534f\u7a0b\u4e2d \u8bfb\u53d6\u540c\u4e00\u4e2a channel\uff0c\u600e\u4e48\u4e0d\u662f\u6309\u987a\u5e8f\u6253\u5370 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : hyp1002950 <\/span> <\/i> 5<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

func main(){<\/p>\n

ch := make(chan int)  go func(){  for{   c :=<-ch   fmt.Println(\"one:\",c,\"len:\",len(ch))  } }()  go func(){  for{   c :=<-ch   fmt.Println(\"two:\",c,\"len:\",len(ch))  } }()  for i:=1;i<=100;i++{  ch<-i }  time.Sleep(time.Second * time.Duration(2)) <\/code><\/pre>\n
}<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (31<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : cloverzrg2 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4f60\u628a\u5de5\u4f5c\u5206\u7ed9\u4e24\u4e2a\u5de5\u4eba\u53bb\u505a\uff0c\u5de5\u4eba 1 \u548c\u5de5\u4eba 2 \u7684\u5b8c\u6210\u7684\u5148\u540e\u987a\u5e8f\u662f\u4e0d\u786e\u5b9a\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : jazzychai <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u56e0\u4e3a\u5b83\u4eec\u662f X \u4e2a goroutine \u5728\u6267\u884c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : huobazi <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6309\u987a\u5e8f\u7528\u534f\u7a0b\u5e72\u5565\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : beidounanxizi <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8bfb\u53d6 channel \u7684\u6570\u636e\u987a\u5e8f\u662f\u987a\u5e8f\u8bfb\u53d6\u7684
     \u4f46\u662f\u4f60\u7684 goroutine \u8fd0\u884c\u987a\u5e8f 
    \u7531\u8c03\u5ea6\u5668\u8c03\u5ea6\u7684 \u4e0d\u53d7\u4f60\u7684\u63a7\u5236 
    \u9664\u975e\u4f60\u80fd\u505a\u5230\u540c\u6b65                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hyp1002950 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 <-ch \u4e0d\u662f\u4f1a\u963b\u585e\u4e48\uff0c\u6211\u60f3\u7740\u5b83\u5e94\u8be5\u662f\u5728\u534f\u7a0b\u4e2d\u63a5\u6536\u5230 1 \u6253\u5370\u51fa\u6765\u4e86 \u7136\u540e\u624d\u80fd\u63a5\u6536\u5230 2 \u518d\u6253\u5370\uff0c\u73b0\u5728\u7ed9\u6211\u611f\u89c9\u662f \u63a5\u6536\u548c\u6253\u5370\u4e0d\u662f\u4e00\u4e2a\u539f\u5b50\u64cd\u4f5c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : yzbythesea <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5148\u63a5\u53d7\u4e0d\u4e00\u5b9a\u5148\u6253\u5370\u554a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : yzbythesea <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5fc5\u7136\u4e0d\u662f\u539f\u5b50\u554a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : cxh116 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u65e0\u8111\u731c stdout print \u5e94\u8be5\u7b97\u662f IO \u64cd\u4f5c, IO \u64cd\u4f5c\u65f6 goroutine \u5207\u6362\u4e86.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : zxlzy <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 ch<-i \u540e\u9762 sleep \u4e00\u4e0b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hyp1002950 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @cxh116 \u6211\u89c9\u5f97\u8fd9\u4e2a\u8bf4\u6cd5\u80fd\u60f3\u901a\uff0c\u63a5\u6536\u548c\u6253\u5370\u5e94\u8be5\u662f\u4e00\u8d77\u8fd0\u884c\u4e86\uff0c\u53ea\u662f print \u662f IO \u64cd\u4f5c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hyp1002950 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @zxlzy \u6211\u5728 fmt.Println \u4e4b\u540e sleep \u4e86\uff0c\u6253\u5370\u5c31 1-100 \u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : sadfQED2 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4f60\u7ed9\u4f60\u7684\u7ba1\u9053\u7f13\u51b2\u957f\u5ea6\u8bbe\u7f6e\u6210 1 \u5c31\u662f\u987a\u5e8f\u7684\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : sadfQED2 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4f60\u6ca1\u8bbe\u7f6e\u957f\u5ea6\uff0c\u6240\u4ee5 ch<-i \u4e0d\u4f1a\u963b\u585e                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : towry <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e0d\u80fd\u770b\u4e0d\u6ce8\u91cd\u4ee3\u7801\u683c\u5f0f\u7684\u4eba\u5199\u7684\u4ee3\u7801                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : no1xsyzy <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @sadfQED2 https:\/\/play.golang.org\/p\/zoNa2QRR6F- \u7136\u800c\u4e0d\u662f\u2026\u2026
    \u6ca1\u8bbe\u7f6e\u957f\u5ea6\u7684\u8bdd\u6211\u8bb0\u5f97\u662f\u6ca1\u63a5\u6536\u65b9\u5c31\u963b\u585e\uff0c\u6709\u63a5\u6536\u65b9\u8f6c\u79fb\u5230\u63a5\u6536\u65b9
    \u800c\u4e14\u5c31\u7b97\u8bbe\u7f6e\u957f\u5ea6\u8f93\u51fa\u4ecd\u7136\u662f\u6df7\u4e71\u7684<\/p>\n
    \u4f3c\u4e4e\u6bcf\u4e2a goroutine \u6709\u5355\u72ec\u7684\u8f93\u51fa\u7f13\u51b2\u533a\uff0c\u518d\u7528\u4e00\u4e2a channel \u53bb\u96c6\u4e2d\u7684\u8bdd\u5c31\u53ef\u4ee5
    https:\/\/play.golang.org\/p\/Xa-lwecfveV
    \u4f46\u4e0d\u662f\u5f88\u61c2\u6ca1\u8bbe\u7f6e\u957f\u5ea6\u4f46\u6709\u96c6\u4e2d\u7684\u60c5\u51b5\u4e0b\u4e3a\u4ec0\u4e48\u8fd8\u662f\u4e71\u7684\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : no1xsyzy <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @no1xsyzy \u53ef\u80fd\u4e0d\u662f\u5355\u72ec\u7f13\u51b2\u533a\u4e00\u8bf4\uff0c\u7528\u4ee4\u724c\u65b9\u6cd5\u4fdd\u8bc1\u4e24\u4e2a goroutine \u4ea4\u66ff\u8fd0\u884c\u4ee5\u540e\u7acb\u5373\u4fdd\u8bc1\u4e86\u8f93\u51fa\u4e5f\u662f one two \u4ea4\u66ff\u7684\u2026\u2026
    \u800c\u4e14 Println \u5e94\u5f53\u4f1a flush \uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : oluoluo <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8fd9\u91cc\u7684 channel \u662f\u65e0\u7f13\u51b2\u901a\u9053\uff0c\u4f1a\u963b\u585e\u7684\uff0c\u6240\u4ee5\u503c\u662f\u6309\u7167\u987a\u5e8f\u4ece channel \u4e2d\u53d6\u51fa\u6765\u7684\uff0c\u4f46\u662f\u53d6\u503c\u548c\u6253\u5370\u4e0d\u662f\u539f\u5b50\u7684\uff0c\u4e2d\u95f4\u8c03\u5ea6\u5668\u53d1\u751f\u8c03\u5ea6\u5bfc\u81f4\u6253\u5370\u7684\u7ed3\u679c\u4e0d\u662f\u987a\u5e8f\u7684\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : janxin <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u56e0\u4e3a\u4f60 goroutine \u8c03\u5ea6\u4e0d\u662f\u987a\u5e8f\u6267\u884c\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : qq1340691923 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 package main<\/p>\n
    import (
     “fmt”
     “sync”
     “time”
    )<\/p>\n
    func main() {
     loca := sync.Mutex{}
     ch := make(chan int)<\/p>\n
     go func() {
     for {
     loca.Lock()
     {
     c := <-ch
     fmt.Println(“one:”, c, “len:”, len(ch))
     }
     loca.Unlock()<\/p>\n
     }
     }()<\/p>\n
     go func() {
     for {
     loca.Lock()
     {
     c := <-ch
     fmt.Println(“two:”, c, “len:”, len(ch))
     }
     loca.Unlock()
     }
     }()<\/p>\n
     for i := 1; i <= 100; i++ {
     ch <- i
     }<\/p>\n
     time.Sleep(time.Second * time.Duration(2))
    }<\/p>\n
    \u8fd9\u6837\u5c31\u597d\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : php01 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u63a5\u6536\u5230\u7684\u987a\u5e8f\u5fc5\u7136\u662f\u6309\u987a\u5e8f\u6765\u7684\uff0c\u4f46\u662f\u54ea\u4e2a\u534f\u7a0b\u5148\u8bfb\u5230\uff0c\u6216\u5148\u5199\u51fa\uff0c\u662f\u63a7\u5236\u4e0d\u4e86\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Nitroethane <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @hyp1002950 #11 \u7528 sleep \u5e76\u4e0d\u662f\u5b8c\u7f8e\u7684\u540c\u6b65\u65b9\u6cd5\uff0c\u867d\u7136\u5c06 sleep \u7684\u65f6\u95f4\u8bbe\u7f6e\u7684\u957f\u4e00\u70b9\u53ef\u4ee5\u5728\u5f88\u5927\u7a0b\u5ea6\u4e0a\u5f97\u5230\u987a\u5e8f\u8f93\u51fa\uff0c\u4f46\u672c\u8d28\u4e0a\u7531\u4e8e goroutine \u8c03\u5ea6\u5668\u7684\u539f\u56e0\u8fd8\u662f\u4f1a\u53ef\u80fd\u51fa\u73b0\u4e71\u5e8f\u8f93\u51fa\u60c5\u51b5\uff0c\u56e0\u4e3a\u54ea\u4e2a goroutine \u5148\u6267\u884c\u53d6\u51b3\u4e8e\u8c03\u5ea6\u5668\u3002\u6b63\u786e\u7684\u505a\u6cd5\u662f\u7528\u4e00\u4e2a\u65e0 buffer \u7684 channel \u53bb\u505a\u4e24\u4e2a goroutine \u4e4b\u95f4\u7684\u540c\u6b65                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : keepeye <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u7528\u5355\u6838 cpu \u53ef\u80fd\u5f97\u5230\u987a\u5e8f\u7ed3\u679c\u5427                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : kele1997 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 “`
    var lock1 sync.Mutex
    var lock2 sync.Mutex<\/p>\n
    func main() {
     ch := make(chan int)<\/p>\n
     lock2.Lock()
     go func() {
     for {
     lock1.Lock()
     c := <-ch
     fmt.Println(“one:”, c, “len:”, len(ch))
     lock2.Unlock()
     }
     }()<\/p>\n
     go func() {
     for {
     lock2.Lock()
     c := <-ch
     fmt.Println(“two:”, c, “len:”, len(ch))
     lock1.Unlock()
     }
     }()<\/p>\n
     for i := 1; i <= 100; i++ {
     ch <- i
     }<\/p>\n
     time.Sleep(time.Second * time.Duration(2))
    }<\/p>\n
    “`                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : KaynW <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @keepeye \u5e76\u4e0d\u4f1a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : back0893 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u534f\u7a0b\u7684\u8c03\u7528\u4f60\u6ca1\u6709\u529e\u6cd5\u4fdd\u8bc1\u662f\u987a\u5e8f\u8c03\u7528                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : zhyl <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e24\u4e2a\u4eba\u5728\u7a97\u53e3\u53d6\u9910\uff0c\u8c01\u5148\u8c01\u540e\u80af\u5b9a\u8981\u4e89\u4e00\u4e89\u4e86\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Takamine <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 channel \u53ea\u662f\u987a\u5e8f\u653e\u5728\u4e86\u4e00\u4e2a queue \u91cc\uff0c\u591a\u4e2a worker \u6bcf\u6b21\u8c01\u53bb\u53d6\u4e0d\u4e00\u5b9a\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : useben <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5e95\u5c42\u662f\u9501                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : kifile <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e3a\u4ec0\u4e48\u7eff\u76ae\u8f66\u6bd4\u9ad8\u94c1\u53d1\u8f66\u65e9\uff0c\u4f46\u662f\u6bd4\u9ad8\u94c1\u5230\u7684\u665a\u5462\uff0c\u8fd9\u5c31\u662f\u539f\u56e0                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : zhuzeitou <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u53ef\u4ee5\u8bd5\u8bd5 go func \u7684\u6700\u540e runtime.Gosched()\u4e00\u4e0b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : adamwong <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u63a5\u6536\u662f\u539f\u5b50\u7684\uff0c\u63a5\u6536+\u6253\u5370\u4e0d\u662f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    golang \u591a\u4e2a\u534f\u7a0b\u4e2d \u8bfb\u53d6\u540c\u4e00…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/324717"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=324717"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/324717\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=324717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=324717"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=324717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}