How can I get the name of a coroutine method using a StackTrace?

Questions & Answers
1

Stack traces currently only show coroutine functions as “MoveNext” which is not what i want. Here’s my test code:

using UnityEngine;
using System.Collections;
using System.Diagnostics;

public class TestCoroutineStackTrace : MonoBehaviour {

	// Use this for initialization
	IEnumerator Start () {
		TestStackTrace();
		yield return null;
	}
	
	void TestStackTrace() {
		
		StackTrace theTrace = new StackTrace();
		foreach(StackFrame f in theTrace.GetFrames()) {
			UnityEngine.Debug.Log(f.GetMethod().Name);
		}
	}
}

Output:

TestStackTrace
UnityEngine.Debug:Log(Object)

MoveNext
UnityEngine.Debug:Log(Object)
2

I’m not at all familiar with System.Diagnostics (so it may contain a way to do this), but you might be able to use Unity’s built-in StackTraceUtility class. Since Unity’s stack traces always put coroutines inside of < and > characters, you can get the current coroutine using something like this:

private IEnumerator TestCoroutine()
{	
	string stackTrace = StackTraceUtility.ExtractStackTrace();
	string coroutineName = stackTrace.Substring(stackTrace.IndexOf('<') + 1, stackTrace.IndexOf('>') - 1);
	Debug.Log(coroutineName);
	
	yield break;
}

I don’t know what your ultimate goal is (and maybe you really need to use StackFrame for some reason), but this should get you the coroutine name.

3

Here’s how to do it using .net’s System.Diagnostics:

System.Diagnostics.StackTrace st = new System.Diagnostics.StackTrace();
		
string fullName = st.GetFrame(1).GetMethod().ReflectedType.Name;
string coroutineMethodName = fullName.Substring(fullName.IndexOf('<') + 1, fullName.IndexOf('>') - 1);

I’m not sure the pros or cons of using either. Maybe only Unity version is available to javascript and boo?