private IList <CtfStreamPlayback> GeneratePlaybackStreams(ICtfInput source, CtfPlaybackOptions playbackOptions)
{
var playbackStreams = new List <CtfStreamPlayback>();
// Initialize packets from all streams, and sort by times
foreach (var trace in source.Traces)
{
var metadataParser = customization.CreateMetadataParser(trace);
ICtfMetadata metadata = metadataParser.Parse(trace.MetadataStream.Stream);
for (int streamIndex = 0; streamIndex < trace.EventStreams.Count; streamIndex++)
{
var stream = trace.EventStreams[streamIndex];
var eventStream = new CtfEventStream(stream, metadata, customization);
var streamPlayback = new CtfStreamPlayback(eventStream, playbackOptions, cancellationToken);
if (eventStream.ByteCount > 0 && streamPlayback.MoveToNextEvent())
{
Debug.Assert(streamPlayback.CurrentEvent != null);
playbackStreams.Add(streamPlayback);
this.streamToTrace.Add(streamPlayback, trace);
this.totalBytesToProcess += stream.ByteCount;
}
else
{
Debug.Assert(false, eventStream.StreamSource + " appears to have no data.\n\n Ignoring the error will cause the trace to be partially loaded.");
}
}
}
return(playbackStreams);
}
/// <summary>
/// Playback the events in time order. Event callbacks happen through ICtfPlaybackCustomization.ProcessEvent,
/// allowing for customized event delivery.
/// </summary>
/// <param name="source">CTF trace input source</param>
/// <param name="playbackOptions">Playback options</param>
/// <param name="progress">Progress meter</param>
public void Playback(
ICtfInput source,
CtfPlaybackOptions playbackOptions,
IProgress <byte> progress)
{
Guard.NotNull(source, nameof(source));
Guard.NotNull(progress, nameof(progress));
var playbackStreams = GeneratePlaybackStreams(source, playbackOptions);
while (playbackStreams.Any())
{
// Find the event stream with the earlieste available event.
CtfStreamPlayback streamPlayback = playbackStreams[0];
for (int x = 1; x < playbackStreams.Count; x++)
{
if (playbackStreams[x].CurrentEvent.Timestamp.NanosecondsFromPosixEpoch < streamPlayback.CurrentEvent.Timestamp.NanosecondsFromPosixEpoch)
{
streamPlayback = playbackStreams[x];
}
}
if (streamPlayback.CurrentEvent.Timestamp.NanosecondsFromPosixEpoch < this.lastEventTimestamp)
{
Debug.Assert(false, "time inversion?");
Console.Error.WriteLine("Time inversion discovered in LTTng trace.");
}
this.customization.ProcessEvent(
streamPlayback.CurrentEvent,
streamPlayback.CurrentPacket,
this.streamToTrace[streamPlayback],
streamPlayback.EventStream,
streamPlayback.Metadata);
this.eventCount++;
this.lastEventTimestamp = streamPlayback.CurrentEvent.Timestamp.NanosecondsFromPosixEpoch;
if (!streamPlayback.MoveToNextEvent())
{
playbackStreams.Remove(streamPlayback);
this.bytesProcessedFromCompletedStreams += streamPlayback.EventStream.ByteCount;
}
if (this.eventCount - this.lastProgressUpdateTimeEventNumber >= 5000)
{
this.UpdateProgress(playbackStreams, progress);
}
this.cancellationToken.ThrowIfCancellationRequested();
}
this.UpdateProgress(playbackStreams, progress);
}
