public static Top Read(string logPath, Stream logStream)
{
TopProxy topProxy = new TopProxy();
List <Definition> definitions = new List <Definition>();
bool level2;
long timerBasis;
int samplingRate;
int envelopeRate;
int concurrency;
string acceleratorPath = Accelerators.Schedule.QueryAcceleratorPath(logPath, logStream, AcceleratorVersion);
string level2AcceleratorPath = Accelerators.Events.QueryAcceleratorPath(logPath, logStream, AcceleratorVersion);
using (TextReader reader = new StreamReader2(logStream))
{
// always read header from log file
string line;
string[] parts;
line = reader.ReadLine();
parts = line.Split('\t');
Debug.Assert(parts[0] == "version");
int version = Int32.Parse(parts[1]);
Debug.Assert(version == 1);
line = reader.ReadLine();
parts = line.Split('\t');
Debug.Assert(parts[0] == "level");
level2 = Int64.Parse(parts[1]) > 1;
line = reader.ReadLine();
parts = line.Split('\t');
Debug.Assert(parts[0] == "tres");
timerBasis = Int64.Parse(parts[1]);
line = reader.ReadLine();
parts = line.Split('\t');
Debug.Assert(parts[0] == "srate");
samplingRate = Int32.Parse(parts[1]);
line = reader.ReadLine();
parts = line.Split('\t');
Debug.Assert(parts[0] == "erate");
envelopeRate = Int32.Parse(parts[1]);
line = reader.ReadLine();
parts = line.Split('\t');
Debug.Assert(parts[0] == "threads");
concurrency = Int32.Parse(parts[1]);
line = reader.ReadLine();
if (!String.Equals(line, ":"))
{
Debug.Assert(false);
}
while (!String.IsNullOrEmpty(line = reader.ReadLine()))
{
parts = line.Split('\t');
switch (parts[1])
{
default:
Debug.Assert(false);
throw new ArgumentException();
case "section":
definitions.Add(
new Definition(
topProxy,
Int32.Parse(parts[0]),
parts[2],
Kind.Effect,
-1));
break;
case "track":
definitions.Add(
new Definition(
topProxy,
Int32.Parse(parts[0]),
parts[3],
Kind.Track,
Int32.Parse(parts[2])));
break;
}
}
}
// create offsets table for epoch records
if (acceleratorPath == null)
{
acceleratorPath = Path.GetTempFileName();
level2AcceleratorPath = Path.GetTempFileName();
#if false
long end = stream.Length;
using (Stream acceleratorStream = new FileStream(acceleratorPath, FileMode.Create, FileAccess.ReadWrite, FileShare.None, Constants.BufferSize))
{
using (BinaryWriter acceleratorWriter = new BinaryWriter(acceleratorStream, Encoding.UTF8))
{
while (((StreamReader2)reader).Position < end)
{
acceleratorWriter.Write((long)((StreamReader2)reader).Position);
EpochResident.Read(reader, topProxy, definitions.Count);
}
}
}
#else
using (Stream acceleratorStream = new FileStream(acceleratorPath, FileMode.Create, FileAccess.ReadWrite, FileShare.None, Constants.BufferSize))
{
using (Stream level2Stream = new FileStream(level2AcceleratorPath, FileMode.Create, FileAccess.ReadWrite, FileShare.None, Constants.BufferSize))
{
FindBoundariesHelper.FindBoundaries(logPath, logStream, acceleratorStream, level2Stream);
}
}
#endif
Accelerators.Schedule.RecordAcceleratorPath(logPath, logStream, acceleratorPath, AcceleratorVersion);
Accelerators.Events.RecordAcceleratorPath(logPath, logStream, level2AcceleratorPath, AcceleratorVersion);
}
Stream acceleratorStream2 = new FileStream(acceleratorPath, FileMode.Open, FileAccess.Read, FileShare.Read, Constants.BufferSize);
BinaryReader acceleratorReader2 = new BinaryReader(acceleratorStream2, Encoding.UTF8);
BitVector level2Bits;
using (Stream level2Stream = new FileStream(level2AcceleratorPath, FileMode.Open, FileAccess.Read, FileShare.Read, Constants.BufferSize))
{
level2Bits = BitVector.Load(level2Stream);
}
IList <Epoch> epochs = new EpochVirtualList(
topProxy,
(int)(acceleratorStream2.Length / EpochVirtualList.OffsetRecordLength),
level2Bits);
//System.Windows.Forms.MessageBox.Show("Number of epochs: " + epochs.Count.ToString());
Top top = new Top(
logStream,
level2,
timerBasis,
samplingRate,
envelopeRate,
concurrency,
definitions,
acceleratorStream2,
acceleratorReader2,
epochs);
topProxy.Top = top;
return(top);
}