go - 如何解决这个程序中的死锁？

Question

我是 golang 的新手，所以我不知道这个死锁问题。我一直在阅读一些文章，但这似乎是该程序的快速修复。

package main

import (
    "fmt"
)

//ping
func addValue(input1 int, input2 int, chn2 chan<- int) {
    chn2 <- input1 + input2
}

//pong
//function to write 1st user input to channel_1
func getUserInput(input1 int, input2 int, chn2 <-chan int, chn1 chan int, chn3 chan int) {
    chn1 <- input1
    chn1 <- input2
    //receiving info from other func and read into this func.
    val := <-chn2
    chn3 <- val
}

//Main function
func main() {
    var input1 int
    var input2 int
    chn1 := make(chan int, 3)
    chn2 := make(chan int)
    chn3 := make(chan int)

    //taking inputs from terminal
    fmt.Scanln(&input1)
    fmt.Scan(&input2)

    //calling go functions
    go getUserInput(input1, input2, chn1, chn2, chn3)
    go addValue(input1, input2, chn2)

    //shifting values from channels to var.
    /*x:=
      y :=
      z := <-chn3*/

    //print out the values on the terminal
    fmt.Println("Reading first input: ", <-chn1)
    fmt.Println("Reading second input: ", <-chn1)
    fmt.Println("Giving resulted value: ", <-chn3)

}

Answer 1

您的函数参数顺序错误。只需更改函数头就可以了

改变

func getUserInput(input1 int, input2 int, chn2 <-chan int, chn1 chan int, chn3 chan int) {

到

func getUserInput(input1 int, input2 int, chn1 chan int,chn2 <-chan int,  chn3 chan int) {

播放链接:https://play.golang.com/p/3lKLoEytr9J