public void Initialize(Tick senderTick, Tick ackTick, SequenceId ackEventId, IEnumerable <Event> events)
{
SenderTick = senderTick;
AckTick = ackTick;
AckEventId = ackEventId;
PendingEvents.AddRange(events);
EventsWritten = 0;
}
// #region Operators
private static int GetDifference(SequenceId a, SequenceId b)
{
Debug.Assert(a.IsValid);
Debug.Assert(b.IsValid);
var difference = (int)((a.RawValue << BIT_SHIFT) - (b.RawValue << BIT_SHIFT));
return(difference);
}
public bool Contains(SequenceId value)
{
int difference = Latest - value;
if (difference == 0)
{
return(true);
}
return(historyArray.Contains(difference - 1));
}
public bool IsNewId(SequenceId id)
{
if (ValueTooOld(id))
{
return(false);
}
if (Contains(id))
{
return(false);
}
return(true);
}
public SequenceWindow Store(SequenceId value)
{
var latest = Latest;
var historyArray = this.historyArray;
int difference = Latest - value;
if (difference > 0)
{
historyArray = this.historyArray.Store(difference - 1);
}
else
{
int offset = -difference;
historyArray = (this.historyArray << offset).Store(offset - 1);
latest = value;
}
return(new SequenceWindow(latest, historyArray));
}
public bool ValueTooOld(SequenceId value)
{
return((Latest - value) > HISTORY_LENGTH);
}
public static bool AreInRange(SequenceId lowest, SequenceId highest)
{
return((highest - lowest) <= HISTORY_LENGTH);
}
private SequenceWindow(SequenceId latest, BitArray64 history)
{
Debug.Assert(latest.IsValid);
Latest = latest;
historyArray = history;
}
public SequenceWindow(SequenceId latest)
{
Debug.Assert(latest.IsValid);
Latest = latest;
historyArray = new BitArray64();
}
// SequenceId
public static void WriteSequenceId(this BitBuffer buffer, SequenceId sequenceId)
{
buffer.Write(SequenceId.BITS_USED, sequenceId.RawValue);
}