今天给大家讲解下go语言开多进程。

package main import ( "fmt" "time" ) var c chan int func main() { c = make(chan int) go waiting("coffee", 1) go waiting("tea", 2) fmt.Println("I,am waiting") //time.Sleep(3 * time.Second) <-c <-c } func waiting(w string, sec int) { time.Sleep(time.Duration(sec) * time.Second) fmt.Println(w, "is ready") c <- 1 } 

如果进程开的比较多，怎样去避免去写多个结束进程的channel，下面我来给大家发下改进版：

package main import ( "fmt" "time" ) var c chan int func main() { c = make(chan int) go waiting("coffee", 1) go waiting("tea1", 2) go waiting("tea2", 3) go waiting("tea3", 4) go waiting("tea4", 5) go waiting("tea5", 6) go waiting("tea6", 7) fmt.Println("I,am waiting") //time.Sleep(3 * time.Second) i := 0 L: for { select { case <-c: i++ if i > 6 { break L } } } } func waiting(w string, sec int) { time.Sleep(time.Duration(sec) * time.Second) fmt.Println(w, "is ready") c <- 1 }