go程

golang里捕获进程信号实现优雅退出的方法

一、定时与 同步退出

    signalChan := make(chan os.Signal, 1)
    signal.Notify(signalChan, syscall.SIGINT, syscall.SIGTERM, os.Kill)

    var wg sync.WaitGroup
    wg.Add(2)
    go getRawRecord(contract, block1, number, &wg)
    go getExchange(contract, myMap, block1, number, contractStr, &wg)
    wg.Wait()
    select {
    case <-signalChan:
        fmt.Println("exitapp,sigs:", signalChan)
        os.Exit(0)
    default:
        return
    }
  func getRawRecord(contract, block1, number, &wg){
  defer wg.Done()
  }

二、锁

互斥锁Mutex

Lock，UnLock