go 使用signal包进行信号的监听基础

package main

import (
    "context"
    "fmt"
    "os"
    "os/signal"
    "time"
)

func main(){
    c:=make(chan os.Signal)
    signal.Notify(c)
    go func() {
        for  {
            fmt.Println(12)
            time.Sleep(1e9)

        }
    }()

    go func() {
        time.AfterFunc(5e9, func() {
            c<-os.Interrupt
        })
    }()

    go func() {
        ctx, _ := context.WithTimeout(context.Background(), 4e9)

        <-ctx.Done()
        c<-os.Kill


        //select {
        //    case <-ctx.Done():
        //        c<-os.Kill
        //}
    }()
    sig:=<-c


    fmt.Println(sig)//^Cinterrupt

}