c# - 使用秒表对应用程序使用情况进行基准测试

Question

您好，我正在尝试制作一个可以在我的项目中使用的全局类，我打算将其用作我的默认模板，我是新手，所以请耐心等待 ;)

Stopwatch Masterstopwatch = new Stopwatch();

#if DEBUG

    private static void ApplicationLogStart()
    {
        StartTime = DateTime.Now;
        Masterstopwatch.Start();

        String eventName = "Program Loaded";
        String errorDetails = "Program has started Succesfully";
        DataLogEntry(eventName, errorDetails);
    }
    private static void ApplicationLogclosing()
    {
        String eventName = "Program is closing";
        String errorDetails = "Program has closed Succesfully";
        DataLogEntry(eventName, errorDetails);
        StopTime = DateTime.Now;
        Masterstopwatch.Stop();
        Benchmark(StartTime,StopTime,Masterstopwatch.Elapsed);
    }
#endif

我怀疑我的设计存在根本性缺陷，因为我想要 Stopwatch Masterstopwatch = new Stopwatch();在不使用方法的情况下全局声明，我怀疑这是不可能的，但我需要问 谢谢

Answer 1

听起来您需要 Singleton Pattern .

如果您按如下方式声明一个秒表包装器，您可以在应用中的任何地方使用它并访问秒表的相同实例。

// Declare singleton wrapper of a stopwatch, which instantiates stopwatch
// on construction
public class StopwatchProxy 
{
    private Stopwatch _stopwatch;
    private static readonly StopwatchProxy _stopwatchProxy = new StopwatchProxy();

    private StopwatchProxy()
    {
        _stopwatch = new Stopwatch();
    }

    public Stopwatch Stopwatch { get { return _stopwatch; } } 

    public static StopwatchProxy Instance
    { 
        get { return _stopwatchProxy; }
    }
}

// Use singleton
class Foo
{
    void Foo()
    {
        // Stopwatch instance here
        StopwatchProxy.Instance.Stopwatch.Start();
    }
}

class Bar
{
    void Bar()
    {
        // Is the same instance as here
        StopwatchProxy.Instance.Stopwatch.Stop();
    }
}