golang runtime实现多核并行任务

package main

//xiaorui.cc

 

import (

"fmt"

"runtime"

)

 

func test(c chan bool, n int) {

 

x := 0

for i := 0; i < 1000000000; i++ {

x += i

}

println(n, x)

if n == 10 {

c <- true

}

}

 

func main() {

runtime.GOMAXPROCS(3)

c := make(chan bool)

 

for i := 0; i < 200; i++ {

go test(c, i)

}

 

<-c

 

fmt.Println("main end...")

 

}