GO学习笔记-监听OS信号

Posted 2022-02-21 breaklinux

1.示例代码

package main

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

func main() 
    // syscall.SIGINT 中断信号
    //管道
    fmt.Println("pid:",os.Getpid())
    interrupt := make(chan os.Signal,1)
    reload := make(chan os.Signal,1)
    signal.Notify(interrupt,syscall.SIGINT)
    signal.Notify(reload,syscall.SIGHUP)
    //监听系统信号;go doc syscall.SIGKILL 查看系统信号
    //signal.Notify(signalChannel,syscall.SIGINT,syscall.SIGHUP)

//处理信号
INTERRUPT:
    for 
        select 
        case <-interrupt:
            break INTERRUPT
        case <-reload:
           fmt.Println("reload")
        
    
 

2.编译操作

bogon$ set GOOS=linux  #交叉编译
bogon$ go mod init daySignal
go: creating new go.mod: module daySignal
go: to add module requirements and sums:
        go mod tidy
bogon$ go mod tidy
bogon$ go build

3.验证测试；

bogon$ ./daySignal 
pid: 4663

bogon$ ps -ef |grep 4663 |grep -v grep 
  501  4663  3885   0  3:16PM ttys000    0:00.01 ./daySignal
bogon$ kill -1 4663 

bogon$ ./daySignal 
pid: 4663
reload