swift - 在 Swift 4 中处理 SIGPIPE

Question

我正在尝试将 Obj-C 代码移植到 Swift 项目，但在编译 SIGPIPE 处理程序时遇到困难:

func SigPipeHandler()
{
  print(@"We Got a Pipe Single :%d____________",s);
}


func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
    signal(SIGPIPE, SigPipeHandler);
    // Override point for customization after application launch.
    return true
}

我收到错误:

Cannot convert value of type '() -> ()' to expected argument type '(@convention(c) (Int32) -> Void)?'

Answer 1

let handler: @convention(c) (Int32) -> () = { sig in
    // handle the signal somehow
    print("error", sig)
}


func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
    signal(SIGPIPE, handler);
    // Override point for customization after application launch.
    return true
}