while循环导致CPU使用率高，正在检查按键事件

我有一个控制台应用程序，它有两个线程，一个是做重复的耗时工作，另一个是检查用户是否按下了ESC键。如果按下ESC键，则耗时的工作线程将暂停，并显示"确定吗"消息，如果选择"是"，则耗时工作线程将完成当前循环，然后退出。

由于while (!breakCurrentOperation(work)) ;循环，我必须检查按键的代码使用了大量CPU资源。我该如何防止这种情况发生？

代码：

    public void runTimeConsumingWork()
    {
        HardWork work = new HardWork();
        Thread workerThread = new Thread(() => work.StartWorking());
        workerThread.Start(); // Start the hard work thread
        while (!workerThread.IsAlive) ; // Hault untill Thread becomes Active 
        // Check if the user wants to stop the hard work
        while (!breakCurrentOperation(work)) ;
        // Cancle the hard work
        work.Stop();
        // Notify the User
        UserInterfaceController.WriteToConsole("Operation Cancled...");
    }

    public static bool breakCurrentOperation(HardWork work)
    {
        if (Console.KeyAvailable)
        {
            var consoleKey = Console.ReadKey(true);
            if (consoleKey.Key == ConsoleKey.Escape)
            {
                work.Pause(); // Pause
                UserInterfaceController.WriteToConsole("Do you want to stop the current process? 'nType s to stop or c to continue.");
                string input = Console.ReadLine();
                if (input == "c" || input == "C")
                {
                    work.Pause(); // Unpause
                    return false; // Continue 
                }
                else if (input == "s" || input == "S")
                {
                    return true; // Break the loop
                }
                else
                {
                    UserInterfaceController.WriteToConsole("Error: Input was not recognized, the current process will now continue. Press Esc to stop the operation.");
                    work.Pause(); // Unpause
                }
            }
        }
        return false;
    }

如果我在主控制台UI线程中放置Thread.Sleep(2000)，CPU使用率会下降，但应用程序会延迟2秒而变得没有响应。