golang timeout1 (总个子任务超时)

golang_timeout2.go

package main

import (
	"fmt"
	"time"
)

func add(ch chan int) {
	for i := 0; i < 10; i++ {
		ch <- i
	}
}

func main() {
	ticker := time.NewTicker(2 * time.Second)
	defer ticker.Stop()
	ch := make(chan int, 10)
	go add(ch)
	for {
		select {
		case <- ch:
			time.Sleep(1 * time.Second)
			fmt.Println("sleep one seconds ...")
		case <- ticker.C:
			fmt.Println("timeout")
			return
		default:
		}
	}
}