fatal error: all goroutines are asleep - deadlock!

运行下面程序，报fatal error: all goroutines are asleep - deadlock! 为什么死锁了呢，求大神解释

ch := make(chan int)
go func() {
for i:= 0; i <= 1000; i++ {
ch <- i
}
}()

for {
	if value, ok := <-ch; ok {
		fmt.Println(value)
	} else {
		break
	}
}