chrisnas

public class Cleaner<T, S> 
    where T : class
{
    private const int DefaultCleanupPeriod = 1000;

    private Action<S> _onCleanup;
    private Action<Exception> _onError;
    private readonly ReferenceQueue<T> _queue;
    private readonly Thread _cleanerThread;
    private readonly ManualResetEvent _exitEvent;

chrisnas

class Program
{
    static void Main(string[] args)
    {
        InnerScope();

        GC.Collect();
        GC.WaitForPendingFinalizers();

chrisnas

public class ReferenceQueue<T>
    where T : class
{
    ...

    internal void Track(T value, PhantomReference<T> reference)
    {
        _table.Add(value, reference);
    }

chrisnas

public interface IGcLog
{
    void Start(string filename);

    void Stop();
}

chrisnas

public abstract class GcLogBase : IGcLog
{
    protected string Filename;
    private StreamWriter _fileWriter;

    public void Start(string filename)
    {
        if (string.IsNullOrEmpty(filename))
            throw new ArgumentNullException(nameof(filename));

chrisnas

EtwGcLog gcLog = EtwGcLog.GetProcessGcLog(pid);
var filename = GetUniqueFilename(pid);
gcLog.Start(filename);

// in a simple Console application, wait for the user to press ENTER.
// in a more realistic case, keep track of the EtwLog instance and 
// call Stop to end the processing of events when needed.

gcLog.Stop();

chrisnas

private static string GetUniqueFilename(int pid)
{
    var now = DateTime.Now;
    string filename = Path.Combine(Environment.CurrentDirectory, 
        $"{pid.ToString()}_{now.Year}{now.Month}{now.Day}_{now.Hour}{now.Minute}{now.Second}.csv"
        );
    return filename;
}

chrisnas

public static EtwGcLog GetProcessGcLog(int pid)
{
    EtwGcLog gcLog = null;
    try
    {
        var process = Process.GetProcessById(pid);
        process.Dispose();

        gcLog = new EtwGcLog(pid);
    }

chrisnas

protected override void OnStart()
{
    string sessionName = $"GcLogEtwSession_{_pid.ToString()}_{Guid.NewGuid().ToString()}";
    Console.WriteLine($"Starting {sessionName}...\r\n");
    _userSession = new TraceEventSession(sessionName, TraceEventSessionOptions.Create);

    Task.Run(() =>
    {
        // only want to receive GC event
        ClrEventsManager manager = new ClrEventsManager(_userSession, _pid, EventFilter.GC);

chrisnas

private void OnGarbageCollection(object sender, GarbageCollectionArgs e)
{
    _line.Clear();
    _line.AppendFormat("{0},", e.StartRelativeMSec.ToString());
    _line.AppendFormat("{0},", e.Number.ToString());
    _line.AppendFormat("{0},", e.Generation.ToString());
    _line.AppendFormat("{0},", e.Type);
    _line.AppendFormat("{0},", e.Reason);
    _line.AppendFormat("{0},", e.IsCompacting.ToString());
    _line.AppendFormat("{0},", e.SuspensionDuration.ToString());