Goexit

package main

import (
    "fmt"
    "runtime"
)

func test() {
    defer fmt.Println("ccccccccc") //只要成功注册了无论是return 还是goexit都会被调用
    runtime.Goexit() //退出函数所在当前go程
    defer fmt.Println("ddddddddddd") //这里没注册成功，因为在注册之前已经退出go程了
}

func main() {
    go func() {
        fmt.Println("aaaaaaa")
        test()
        defer fmt.Println("bbbbbbb")
    }()
    for {
    }
}

//aaaaaaa
//ccccccccc