static void Main(string[] args)
{
if (args.Length < 2)
{
Console.WriteLine("Usage: SessionStatistics <real-time session name> <seconds>");
return;
}
string sessionName = args[0];
int seconds = int.Parse(args[1]);
Console.WriteLine("Measuring provider verbosity for session '{0}' for {1} seconds", sessionName, seconds);
IObservable <EtwNativeEvent> session = EtwObservable.FromSession(sessionName);
var timeSource = new TimeSource <EtwNativeEvent>(session, e => e.TimeStamp);
var countPerWindow = from e in timeSource.Take(TimeSpan.FromSeconds(seconds), timeSource.Scheduler)
group e by new { e.ProviderId } into g
from total in g.Count()
select new { Provider = g.Key, Count = total };
ManualResetEvent evt = new ManualResetEvent(false);
IDisposable output = countPerWindow.Subscribe(
stat => Console.WriteLine("{0} {1}", stat.Provider, stat.Count), // OnNext
e => Console.WriteLine(e.Message), // OnError
() => { evt.Set(); }); // OnCompleted
IDisposable input = timeSource.Connect();
evt.WaitOne();
output.Dispose();
input.Dispose();
}
/// <summary>
/// Creates a listener to ETW real-time session for BinaryEnvelope events. These Events have EventId 0, 1 and 2.
/// and belong to specified provider.
/// </summary>
/// <param name="providerId">Identifier of ETW provider.</param>
/// <param name="sessionName">Session name.</param>
/// <returns>Sequence of events ordered by timestamp.</returns>
public static IObservable <IEnvelope> FromSession(
Guid providerId,
string sessionName)
{
var parser = new BinaryEtwParser(providerId);
var etwObservable = EtwObservable.FromSession(sessionName);
return(etwObservable
.Select(parser.Parse)
.Where(item => item != null));
}
public static void ListenWithImperativeCode()
{
Console.WriteLine("----- Listening with Tx-EtwObservable and imperative code -----");
_statistics = new Dictionary <uint, StatisticsBucket>();
_timer = new Timer(OnTimer, null, 1000, 1000);
_raw = EtwObservable.FromSession(SessionName);
using (_raw.Subscribe(CustomCallback))
{
Console.ReadLine();
}
}
public static void ListenWintQueryOnEtwNativeEvent()
{
Console.WriteLine("----- Listening with Tx-EtwObservable and Rx query -----");
_raw = EtwObservable.FromSession(Baseline.SessionName);
UInt32 pid = 0;
UInt32 size = 0;
UInt32 daddr = 0;
var timeSource = new TimeSource <EtwNativeEvent>(_raw, e => e.TimeStamp);
var toStackVars = timeSource.Do(e => // this copies the variables on the stack
{
pid = e.ReadUInt32(); // skip PID
size = e.ReadUInt32();
daddr = e.ReadUInt32();
});
var x = from window in toStackVars.Window(TimeSpan.FromSeconds(1))
from stats in
(from packet in window
group packet by daddr
into g
from total in g.Sum(p => size)
select new
{
address = new IPAddress(g.Key).ToString(),
received = total
})
.ToList()
select stats.OrderBy(s => s.address);
_subscription = x.Subscribe(v =>
{
Console.WriteLine("--- {0} ---", DateTime.Now);
foreach (var s in v)
{
Console.WriteLine("{0, -15} {1,-10:n0} ", s.address, s.received);
}
Console.WriteLine();
});
timeSource.Connect();
Console.ReadLine();
Console.WriteLine(pid); // prevent the compiler to optimize this away
_subscription.Dispose();
timeSource.Dispose();
}
public static void ListenWintUnsafeClass()
{
Console.WriteLine("----- Listening with Unsafe wrapper class and Rx query -----");
// this is the approach used by TraceEvent
// http://blogs.msdn.com/b/dotnet/archive/2013/08/15/announcing-traceevent-monitoring-and-diagnostics-for-the-cloud.aspx
// - It works in this case and provides better performance
// - In general means the user must think which data to copy as the first step in the query
// For example in query that joins begin and end event, we can't stop ETW from overwriting the buffer before matching end arrives
var instance = new RecvV4();
_raw = EtwObservable.FromSession(Baseline.SessionName);
var timeSource = new TimeSource <EtwNativeEvent>(_raw, e => e.TimeStamp);
var received = timeSource.Select(e =>
{
unsafe
{
instance.userData = (byte *)e.UserData.ToPointer();
}
return(instance);
});
var x = from window in received.Window(TimeSpan.FromSeconds(1), timeSource.Scheduler)
from stats in
(from packet in window
group packet by packet.daddr into g
from total in g.Sum(p => p.size)
select new
{
address = new IPAddress(g.Key).ToString(),
received = total
})
.ToList()
select stats.OrderBy(s => s.address);
_subscription = x.Subscribe(v =>
{
//Console.WriteLine("--- {0} ---", DateTime.Now);
//foreach (var s in v)
// Console.WriteLine("{0, -15} {1,-10:n0} ", s.address, s.received);
//Console.WriteLine();
});
timeSource.Connect();
Console.ReadLine();
_subscription.Dispose();
timeSource.Dispose();
}
static void Main()
{
Process logman = Process.Start(
"logman.exe",
"create trace TCP -rt -nb 2 2 -bs 1024 -p {7dd42a49-5329-4832-8dfd-43d979153a88} 0xffffffffffffffff -ets");
logman.WaitForExit();
IObservable <EtwNativeEvent> session = EtwObservable.FromSession("TCP");
using (session.Subscribe(e => Console.WriteLine("{0} {1}", e.TimeStamp, e.Id)))
{
Console.ReadLine();
}
}
static void ListenNative()
{
Console.WriteLine("listening for EtwNativeEvent");
Console.WriteLine();
var all = EtwObservable.FromSession("TxRealTime");
var windows = from w in all.Window(TimeSpan.FromSeconds(1))
from c in w.Count()
select c;
subscription = windows.Subscribe(
(c) => Console.WriteLine("Using Tx and Rx for count : {0:n}", c),
(error) => Console.WriteLine(error.Message),
() => Console.WriteLine("----Completed!---"));
}
public static void ListenWintUnsafeClass()
{
Console.WriteLine("----- Listening with Unsafe wrapper class and Rx query -----");
var instance = new RecvV4();
_raw = EtwObservable.FromSession(Baseline.SessionName);
var timeSource = new TimeSource <EtwNativeEvent>(_raw, e => e.TimeStamp);
var received = timeSource.Select(e =>
{
unsafe
{
instance.userData = (byte *)e.UserData.ToPointer();
}
return(instance);
});
var x = from window in received.Window(TimeSpan.FromSeconds(1), timeSource.Scheduler)
from stats in
(from packet in window
group packet by packet.daddr into g
from total in g.Sum(p => p.size)
select new
{
address = new IPAddress(g.Key).ToString(),
received = total
})
.ToList()
select stats.OrderBy(s => s.address);
_subscription = x.Subscribe(v =>
{
//Console.WriteLine("--- {0} ---", DateTime.Now);
//foreach (var s in v)
// Console.WriteLine("{0, -15} {1,-10:n0} ", s.address, s.received);
//Console.WriteLine();
});
timeSource.Connect();
Console.ReadLine();
_subscription.Dispose();
timeSource.Dispose();
}
public void Start()
{
if (this.session != null)
{
throw new InvalidOperationException("The session is already started.");
}
RealTimeTraceCollectorInfo info = new RealTimeTraceCollectorInfo(this.name);
info.Providers.Add(new ProviderInfo(KernelProcessProviderId)
{
KeywordsAll = 0x10, Level = 4
});
this.session = info.Create();
this.session.Start();
IObservable <EtwNativeEvent> stream = EtwObservable.FromSession(this.name);
this.subscription = stream.Subscribe(e => this.OnNext(e));
}
