这里有一个脚本，该脚本使您可以设置程序超时并在执行期间动态更改超时。 https://play.golang.org/p/qRvVMPnp9g2

package main

import (
    "fmt"
    "time"
    "os"
)

var (
    oldDuration time.Duration = 10 * time.Second
    timer *time.Timer = time.NewTimer(oldDuration)
    start time.Time = time.Now()
)

// The init function is called before main
func init(){
    // function asynchronously monitors and terminates script after timeout
    go func(){
        <- timer.C
        fmt.Println("Exit")
        os.Exit(1)
    }()
}

func main() {

    // Do some work
    <-time.After(2 * time.Second)
    fmt.Println("Hello World")

    // Change timeout interval dynamically
    setTimeout(5 * time.Second)

    // Do more work
    <-time.After(5 * time.Second)
    fmt.Println("Shouldn't be reached as script terminates after 5 seconds of which 2 seconds have been used earlier")
}

func setTimeout(newDuration time.Duration){

     // Stop timer - prevent program terminating in setTimeout function
     timer.Stop()

     // Compute remaining time
     var timePassed time.Duration = time.Since(start)
     var timeToTermination time.Duration = newDuration - timePassed

     // Restart timer - continuing from however many second 
     // have elapsed since the program started
     oldDuration = newDuration
     timer.Reset(timeToTermination)
}