DiagnosticSource.cs

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using System.Diagnostics.CodeAnalysis;
 
namespace System.Diagnostics;
 
public abstract class DiagnosticSource
{
    [RequiresUnreferencedCode("The type of object being written to DiagnosticSource cannot be discovered statically.")]
    public abstract void Write(string name, object? value);
 
    public abstract bool IsEnabled(string name);
 
    public virtual bool IsEnabled(string name, object? arg1, object? arg2 = null)
    {
        return IsEnabled(name);
    }
 
    [RequiresUnreferencedCode("The type of object being written to DiagnosticSource cannot be discovered statically.")]
    public Activity StartActivity(Activity activity, object? args)
    {
        activity.Start();
        Write(activity.OperationName + ".Start", args);
        return activity;
    }
 
    [RequiresUnreferencedCode("The type of object being written to DiagnosticSource cannot be discovered statically.")]
    public void StopActivity(Activity activity, object? args)
    {
        if (activity.Duration == TimeSpan.Zero)
        {
            activity.SetEndTime(Activity.GetUtcNow());
        }
        Write(activity.OperationName + ".Stop", args);
        activity.Stop();
    }
 
    public virtual void OnActivityImport(Activity activity, object? payload)
    {
    }
 
    public virtual void OnActivityExport(Activity activity, object? payload)
    {
    }
}