download2014711 2017-12-28 01:10
浏览 26
已采纳

在Golang中,如何使用通道处理许多goroutine

I'm thinking start 1000 goroutines at the same time using for loop in Golang.
The problem is: I have to make sure that every goroutine has been executed.
Is it possible using channels to help me make sure of that?

The structure is kinda like this:

func main {
    for i ... {
        go ...
        ch?
    ch?
}
  • 写回答

3条回答 默认 最新

  • duanmao2650 2017-12-28 02:01
    关注

    Yes, try this:

    package main
    
    import (
        "fmt"
    )
    
    const max = 1000
    
    func main() {
        for i := 1; i <= max; i++ {
            go f(i)
        }
    
        s := 0
        for i := 1; i <= max; i++ {
            s += <-ch
        }
    
        fmt.Println(s)
    }
    
    func f(n int) {
        // do a job here
        ch <- n
    }
    
    var ch = make(chan int, max)
    

    output:

    500500
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(2条)

报告相同问题?