Go 使用协程编写程序,按顺序打印 cat、dog、fish依次打印十次

golang qa goroutine

字数统计: 174阅读时长: 1 min

 2023/12/17 

package main

import (
        "fmt"
        "sync"
)

func main() {
        var wg sync.WaitGroup

        chCatOk := make(chan struct{})
        defer close(chCatOk)
        chDogOk := make(chan struct{})
        defer close(chDogOk)
        chFishOk := make(chan struct{})
        defer close(chFishOk)
        stopCh := make(chan struct{})

        wg.Add(3)
        go PrintAnimal(&wg, "cat", &chCatOk, &chDogOk, &stopCh)
        go PrintAnimal(&wg, "dog", &chDogOk, &chFishOk, &stopCh)
        go PrintAnimal(&wg, "fish", &chFishOk, &chCatOk, &stopCh)

        chCatOk <- struct{}{}
        wg.Wait()

        fmt.Println("done")
}

func PrintAnimal(wg *sync.WaitGroup, name string, ch1, ch2, stop *chan struct{}) {
        defer wg.Done()
        count := 0

        for {
                select {
                case <-*ch1:
                        fmt.Println(name, count)
                        count++
                        if count >= 100 {
                                fmt.Println(name, "over")
                                close(*stop)
                                return
                        }
                        *ch2 <- struct{}{}
                case <-*stop:
                        fmt.Println(name, "stop")
                        return
                }
        }
}

以上。

原文作者：Saki Shum

原文链接：https://sakishum.com/2023/12/17/Go-%E4%BD%BF%E7%94%A8%E5%8D%8F%E7%A8%8B%E7%BC%96%E5%86%99%E7%A8%8B%E5%BA%8F-%E6%8C%89%E9%A1%BA%E5%BA%8F%E6%89%93%E5%8D%B0-cat%E3%80%81dog%E3%80%81fish%E4%BE%9D%E6%AC%A1%E6%89%93%E5%8D%B0%E5%8D%81%E6%AC%A1/

发表日期：十二月 17日 2023, 9:17:11 晚上

更新日期：十二月 17日 2023, 9:19:51 晚上

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