internal unsafe ProviderManifest AddChunk(TraceEvent data) { if (provider != null) { return(null); } if (data.EventDataLength <= sizeof(ManifestEnvelope) || data.GetByteAt(3) != 0x5B) // magic number { return(null); } ushort totalChunks = (ushort)data.GetInt16At(4); ushort chunkNum = (ushort)data.GetInt16At(6); if (chunkNum >= totalChunks || totalChunks == 0) { return(null); } if (Chunks == null) { format = (ManifestEnvelope.ManifestFormats)data.GetByteAt(0); majorVersion = (byte)data.GetByteAt(1); minorVersion = (byte)data.GetByteAt(2); ChunksLeft = totalChunks; Chunks = new byte[ChunksLeft][]; } else { // Chunks have to agree with the format and version information. if (format != (ManifestEnvelope.ManifestFormats)data.GetByteAt(0) || majorVersion != data.GetByteAt(1) || minorVersion == data.GetByteAt(2)) { return(null); } } if (Chunks[chunkNum] != null) { return(null); } byte[] chunk = new byte[data.EventDataLength - 8]; Chunks[chunkNum] = data.EventData(chunk, 0, 8, chunk.Length); --ChunksLeft; if (ChunksLeft > 0) { return(null); } // OK we have a complete set of chunks byte[] serializedData = Chunks[0]; if (Chunks.Length > 1) { int totalLength = 0; for (int i = 0; i < Chunks.Length; i++) { totalLength += Chunks[i].Length; } // Concatinate all the arrays. serializedData = new byte[totalLength]; int pos = 0; for (int i = 0; i < Chunks.Length; i++) { Array.Copy(Chunks[i], 0, serializedData, pos, Chunks[i].Length); pos += Chunks[i].Length; } } Chunks = null; // string str = Encoding.UTF8.GetString(serializedData); provider = new ProviderManifest(serializedData, format, majorVersion, minorVersion); return(provider); }