从异步函数获取当前方法名称? [英] Get current method name from async function?

问题描述

无论如何可以从异步函数内部获取当前方法名称?

Is there anyway to get the current method name from inside an async function?

我试过了:

System.Reflection.MethodInfo.GetCurrentMethod();

我尝试使用 StackTrace 和 StrackFrame 如下:

And I've tried using StackTrace and StrackFrame as follows:

StackTrace strackTrace = new StackTrace();

for (int i = 0; i < strackTrace.GetFrames().Length; i++)
{
    SafeNativeMethods.EtwTraceInfo("Function" + i + ":" + function);
    SafeNativeMethods.EtwTraceInfo("Type" + i + ":" + strackTrace.GetFrame(i).GetType().Name);
    SafeNativeMethods.EtwTraceInfo("Method" + i + ":" + strackTrace.GetFrame(i).GetMethod().Name);
    SafeNativeMethods.EtwTraceInfo("ToString Call" + i + ":" + strackTrace.GetFrame(i).ToString());
}

但它们似乎都不起作用，我会得到.ctor"、InvokeMethod"、Invoke"、CreateInstance"、CreateKnownObject"或CreateUnknownObject"或MoveNext"

But neither of them seem to work, I'd get ".ctor", "InvokeMethod", "Invoke", "CreateInstance", "CreateKnownObject" or "CreateUnknownObject" or "MoveNext"

关于我如何做到这一点的任何想法?我想创建一个通用的logger函数，又不想传入调用logger函数的函数名，所以尝试了stacktrace方法，没用.

Any ideas on how I can do this? I want to create a generic logger function and I don't want to pass in the name of the function that called the logger function, so I tried the stacktrace method, didn't work.

我放弃了，说，好吧，我将函数名作为第一个参数传入，但是当我从调用通用记录器函数的调用函数调用反射方法时，我总是得到.ctor"

I gave up on that and said, ok, I'll pass in the function name as the first parameter, but when I called the reflection method from the calling function that calls the generic logger function, I always get ".ctor"

有什么想法吗?请注意，我正在调用的通用记录器函数是同一个类中的静态方法(目前必须是这种方式......).

Any ideas? Note the generic logger function I'm calling is a static method in the same class (it has to be this way for now...).

推荐答案

C# 5 添加了调用者信息属性，这可能会为您提供更多您正在寻找的信息.请注意，这些在编译时将适当的信息插入到调用站点中，而不是使用运行时信息.功能比较有限(显然你不能得到一个完整的调用堆栈)，但速度要快得多.

C# 5 added caller info attributes which may give you more what you are looking for. Note that these insert the appropriate information into the call site at compile-time rather than using run-time information. The functionality is more limited (you can't get a complete call stack, obviously), but it is much faster.

使用 CallerMemberNameAttribute 的示例:

An example using CallerMemberNameAttribute:

using System.Runtime.CompilerServices;

public static void Main(string[] args)
{
    Test().Wait();            
}

private static async Task Test()
{
    await Task.Yield();
    Log();
    await Task.Yield();
}

private static void Log([CallerMemberName]string name = "")
{
    Console.WriteLine("Log: {0}", name);
}

还有 CallerFilePath 和 CallerLineNumber 属性，它们可以获取有关呼叫站点的其他信息.

There are also CallerFilePath and CallerLineNumber attributes which can get other pieces of info about the call site.

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