signals _ golang

Sometimes we'd like our Go programs to intelligently handle Unix signals. For example, we might want a server to gracefully shutdown when it receives a SIGTERM, or a command-line tool stop processing input if it receives a SIGINT. Here's how to handle signals in Go with channels

package main

import (
    "fmt"
    "os"
    "os/signal"
    "syscall"
)

func main() {

    sigs := make(chan os.Signal, 1)
    done := make(chan bool, 1)

    signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)

    go func() {
        sig := <-sigs
        fmt.Println("")
        fmt.Println(sig)
        done <- true
    }()

    fmt.Println("awaiting signal")
    <-done
    fmt.Println("exiting")
}

awaiting signal
exit
^C
interrupt
exiting

总结 :

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