Filtering ETW Traces by PID

EtwFilter.cs

using System;
using System.Collections.Generic;
using Microsoft.Diagnostics.Tracing;
using Microsoft.Diagnostics.Tracing.Session;
using System.Linq;
using System.Text;

namespace EtwFilter
{
    class Program
    {
        static void Main(string[] args)
        {
            FilterTrace(args[0], args[1], Int32.Parse(args[2]));
        }

        private static void FilterTrace(String sourceFile, String destinationFile, int pid)
        {
            using ( var source = new ETWReloggerTraceEventSource(sourceFile, destinationFile) )
            {
                Console.WriteLine("Processing: {0}", sourceFile);
                long count = 0;
                long written = 0;
                source.AllEvents += (e) => {
                    if ( ((++count) % 100000) == 0 )
                    {
                        Console.WriteLine("{0} events", count);
                    }
                    if ( e.ProcessID == pid )
                    {
                        source.WriteEvent(e);
                        written++;
                    }
                };
                source.Process();
                Console.WriteLine("Wrote {0} events.", written);
            }
        }
    }
}