public CtfReader(Stream stream, CtfMetadata metadata, CtfStream ctfStream)
{
_handle = GCHandle.Alloc(_buffer, GCHandleType.Pinned);
_stream = stream;
_metadata = metadata;
_streamDefinition = ctfStream;
ResetBuffer();
}
public void Load(CtfMetadataParser parser)
{
Dictionary <string, CtfMetadataType> typeAlias = new Dictionary <string, CtfMetadataType>();
List <CtfStream> streams = new List <CtfStream>();
foreach (CtfMetadataDeclaration entry in parser.Parse())
{
switch (entry.Definition)
{
case CtfDeclarationTypes.Clock:
CtfClock clock = new CtfClock(entry.Properties);
_clocks[clock.Name] = clock;
break;
case CtfDeclarationTypes.Trace:
Trace = new CtfTrace(entry.Properties);
break;
case CtfDeclarationTypes.Environment:
Environment = new CtfEnvironment(entry.Properties);
break;
case CtfDeclarationTypes.TypeAlias:
typeAlias[entry.Name] = entry.Type;
break;
case CtfDeclarationTypes.Struct:
typeAlias[entry.Name] = new CtfStruct(entry.Properties, entry.Fields);
break;
case CtfDeclarationTypes.Stream:
CtfStream stream = new CtfStream(entry.Properties);
while (streams.Count <= stream.ID)
{
streams.Add(null);
}
streams[stream.ID] = stream;
break;
case CtfDeclarationTypes.Event:
CtfEvent evt = new CtfEvent(entry.Properties);
streams[evt.Stream].AddEvent(evt);
break;
default:
Debug.Fail("Unknown metadata entry type.");
break;
}
}
Streams = streams.ToArray();
ResolveReferences(typeAlias);
}
private bool ReadTraceHeader()
{
// Read Trace Header
CtfStruct traceHeader = _metadata.Trace.Header;
int traceHeaderSize = traceHeader.GetSize();
if (traceHeaderSize == CtfEvent.SizeIndeterminate)
{
throw new FormatException("Unexpected metadata format.");
}
int magicOffset = traceHeader.GetFieldOffset("magic");
if (magicOffset < 0)
{
throw new FormatException("Unexpected metadata format: No magic field.");
}
int streamIdOffset = traceHeader.GetFieldOffset("stream_id");
if (streamIdOffset < 0)
{
throw new FormatException("Unexpected metadata format: No stream_id field.");
}
// Convert to bytes instead of bits
magicOffset /= 8;
streamIdOffset /= 8;
traceHeaderSize /= 8;
if (_stream.Read(_buffer, 0, traceHeaderSize) != traceHeaderSize)
{
return(false);
}
#if DEBUG
_fileOffset += traceHeaderSize;
#endif
uint magic = BitConverter.ToUInt32(_buffer, magicOffset);
if (magic != 0xc1fc1fc1)
{
throw new FormatException("Unknown magic number in trace header.");
}
uint streamId = BitConverter.ToUInt32(_buffer, streamIdOffset);
_ctfStream = _metadata.Streams[streamId];
return(true);
}