public BufferDescriptor TryReadBuffer(BufferDescriptor bufferDescriptor, EventListener listener)
{
if (bufferDescriptor != null)
Reader.Position = bufferDescriptor.FilePosition;
return BufferDescriptor.Read (Header, Reader, listener);
}
internal static unsafe BufferDescriptor Read(LogHeader logHeader, CachedBinaryReader reader, EventListener listener)
{
var pos = reader.Position;
var header = BufferHeader.Read (reader);
if (header == null)
return null;
if (!reader.LoadData (header.Length)) {
reader.Position = pos;
return null;
}
fixed (byte* buffer = reader.buffer) {
// FIXME: unset the buffer pointer after this block!
reader.SetBufferPointer (buffer);
var result = new BufferDescriptor (pos, header);
try {
listener.ReadBufferEvents (logHeader, result, reader);
} catch (Exception e) {
Console.WriteLine ("error while reading event !");
Console.WriteLine (e);
}
return result;
}
}
public IEnumerable<BufferDescriptor> ReadBuffer(EventListener listener)
{
do {
var buffer = TryReadBuffer (null, listener);
if (buffer != null) {
yield return buffer;
} else {
if (Exited && Reader.IsEof)
break;
Thread.Sleep (5);
}
} while (!token.IsCancellationRequested);
Reader.Close ();
}
