如何控制 for 循环一段时间超时自动退出呢?思路很简单,就是在 for 循环中使用 select 监听 channel,代码如下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | package main import ( "fmt" "time" ) func main() { timeout := time.After(time.Second * 10) finish := make ( chan bool ) count := 1 go func () { for { select { case <-timeout: fmt.Println( "timeout" ) finish <- true return default : fmt.Printf( "haha %d\n" , count) count++ } time.Sleep(time.Second * 1) } }() <-finish fmt.Println( "Finish" ) } |
这里设置 for 循环 10s 超时。
运行内容:
1 2 3 4 5 6 7 8 9 10 11 12 | haha 1 haha 2 haha 3 haha 4 haha 5 haha 6 haha 7 haha 8 haha 9 haha 10 timeout Finish |
参考:https://blog.tanteng.me/2017/11/golang-for-timeout/#more-11753