private long NewPosition(int resultingOffset)
{
if (resultingOffset > 0)
{
_termOffset = resultingOffset;
return(_termBeginPosition + resultingOffset);
}
if ((_termBeginPosition + TermBufferLength) >= MaxPossiblePosition)
{
return(MAX_POSITION_EXCEEDED);
}
int nextIndex = LogBufferDescriptor.NextPartitionIndex(_activePartitionIndex);
int nextTermId = _termId + 1;
_activePartitionIndex = nextIndex;
_termOffset = 0;
_termId = nextTermId;
_termBeginPosition =
LogBufferDescriptor.ComputeTermBeginPosition(nextTermId, PositionBitsToShift, InitialTermId);
var termCount = nextTermId - InitialTermId;
LogBufferDescriptor.InitialiseTailWithTermId(_logMetaDataBuffer, nextIndex, nextTermId);
LogBufferDescriptor.ActiveTermCountOrdered(_logMetaDataBuffer, termCount);
return(ADMIN_ACTION);
}
private void RotateTerm()
{
int nextIndex = LogBufferDescriptor.NextPartitionIndex(_activePartitionIndex);
int nextTermId = _termId + 1;
_activePartitionIndex = nextIndex;
_termOffset = 0;
_termId = nextTermId;
_termBeginPosition += TermBufferLength;
var termCount = nextTermId - InitialTermId;
LogBufferDescriptor.InitialiseTailWithTermId(_logMetaDataBuffer, nextIndex, nextTermId);
LogBufferDescriptor.ActiveTermCountOrdered(_logMetaDataBuffer, termCount);
}