Windows优雅关闭

## 尝试优雅关闭
## -WindowStyle必须不是Hidden, 比如Minimized
$proc.CloseMainWindow() | Out-Null

## 事件（轻量，如果不用数据，可以用这个）
$eventName = "shutdown_pid_$($proc.Id)"
$event = [System.Threading.EventWaitHandle]::OpenExisting($eventName)
$event.Set()
$event.Close()

## named pipe
$pipe = New-Object System.IO.Pipes.NamedPipeClientStream(".", $eventName, [System.IO.Pipes.PipeDirection]::Out)
$pipe.Connect(1000)
$pipe.Close()

func waitShutdownPipe(pid int) {
    // github.com/Microsoft/go-winio
    ln, _ := winio.ListenPipe(fmt.Sprintf("\\\\.\\pipe\\shutdown_pid_%d", pid), nil)
    defer ln.Close()
    conn, _ := ln.Accept()
    defer conn.Close()
    fmt.Printf("shutdown pipe received\n")
}

func waitShutdownEvent(pid int) {
    // golang.org/x/sys/windows
    name, _ := windows.UTF16PtrFromString(fmt.Sprintf("shutdown_pid_%d", pid))
    event, _ := windows.CreateEvent(nil, 0, 0, name)
    defer windows.CloseHandle(event)

    windows.WaitForSingleObject(event, windows.INFINITE)
    //sc <- syscall.SIGTERM
    fmt.Printf("shutdown event received\n")
}