CallSiteHelpers.cs

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using System.Dynamic;
using System.Reflection;
 
namespace System.Runtime.CompilerServices;
 
public static class CallSiteHelpers
{
    private static readonly Type s_knownNonDynamicMethodType = typeof(object).GetMethod("ToString").GetType();
 
    public static bool IsInternalFrame(MethodBase mb)
    {
        if (mb.Name == "CallSite.Target" && mb.GetType() != s_knownNonDynamicMethodType)
        {
            return true;
        }
        if (mb.DeclaringType == typeof(UpdateDelegates))
        {
            return true;
        }
        return false;
    }
}