private void LoadNextEvent()
{
lock (this)
{
if (sinkFile.Position == sinkFile.Length)
{
// EOF
nextEvent = null;
return;
}
// delayOffset = difference in when this event actually happened vs scheduled.
// See comment for nextEventReleaseTime for details
long delayOffset = timer.ElapsedMilliseconds - (nextEvent == null ? 0 : nextEvent.Time);
nextEvent = MillipedeEvent.Deserialize(sinkFile);
nextEventReleaseTime = nextEvent.Time + delayOffset;
//Console.WriteLine("Loaded event {0}: recorded at {1}ms, shifted by {2}ms to replay at {3}ms",
// NumberEvents + 1, nextEvent.Time, delayOffset, nextEventReleaseTime);
//Console.WriteLine(" " + nextEvent);
Monitor.Pulse(this); // wake any listeners in WaitForReplayEvent
}
}
public void Record(MillipedeEvent millipedeEvent)
{
if(mode == MillipedeMode.Record)
{
if (dataSink == null) { return; }
millipedeEvent.Time = timer.ElapsedMilliseconds;
lock (this)
{
int eventNo = Interlocked.Increment(ref NumberEvents); // important for replaying too
if (log.IsTraceEnabled)
{
log.Trace(String.Format("[{2}] Recording event #{0}: {1}",
eventNo, millipedeEvent, millipedeEvent.Time));
}
if(dataSink != null) { millipedeEvent.Serialize(dataSink); }
}
}
else if(mode == MillipedeMode.Playback)
{
MillipedeEvent e = nextEvent;
if(e == null)
{
log.Trace("Millipede Playback: no matching event! (nextEvent == null)");
// although this may be of interest, it's likely because the recorder
// was explicitly stopped
}
else if(!e.Type.Equals(millipedeEvent.Type))
{
if (log.IsTraceEnabled)
{
log.Trace("Millipede Playback: different type of operation than expected!");
log.Trace(" expected: " + nextEvent.Type);
log.Trace(" provided: " + e.Type);
}
}
else if(!e.ObjectDescriptor.Equals(millipedeEvent.ObjectDescriptor))
{
if (log.IsTraceEnabled)
{
log.Trace("Millipede Playback: different message sent than expected!");
log.Trace(" expected: " + nextEvent.ObjectDescriptor);
log.Trace(" provided: " + e.ObjectDescriptor);
}
}
else
{
Interlocked.Increment(ref NumberEvents);
if (log.IsInfoEnabled)
{
log.Trace(String.Format("Recorded packet {0}: {1}", NumberEvents, e));
}
LoadNextEvent();
}
}
}
