goroutine 运行机制是不能外部终止,只能通过 channel 来与它通信,通过 channel 给goroutine 发送终止信号
下面用一个简单的例子说明上面的问题
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package main
import (
"fmt"
"time"
)
func main() {
quit := make(chan struct{})
go func() {
for {
select {
case <-quit:
fmt.Println("here 3")
return
default:
// Do other stuff
fmt.Println("here 4")
time.Sleep(10 * time.Second)
fmt.Println("here 5")
}
}
}()
// Do stuff
fmt.Println("here 1")
time.Sleep(2 * time.Second)
fmt.Println("here 6")
// Quit goroutine
quit <- struct{}{}
fmt.Println("here 2")
}
输出:
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here 1
here 4
here 6
here 5
here 3
here 2
goroutine
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