private bool CheckSumOK(ByteArrayBuffer buffer, int offset)
{
var initialOffSet = buffer.Offset();
var length = OwnLength();
length -= ChecksumLength;
buffer.Seek(offset);
var readCheckSum = buffer.ReadLong();
var checkSumBeginOffset = buffer.Offset();
var bytes = buffer._buffer;
var calculatedCheckSum = CRC32.CheckSum(bytes, checkSumBeginOffset, length);
buffer.Seek(initialOffSet);
return(calculatedCheckSum == readCheckSum);
}
private ByteArrayBuffer ReadNextSlot(int length)
{
ByteArrayBuffer slot = _reader.ReadPayloadReader(_reader.Offset(), length);
_reader.Skip(length);
return(slot);
}
private void WriteIntAt(ByteArrayBuffer target, int offset, int value)
{
int currentOffset = target.Offset();
target.Seek(offset);
target.WriteInt(value);
target.Seek(currentOffset);
}
private void Marshall(ByteArrayBuffer buffer, bool shuttingDown)
{
var checkSumOffset = buffer.Offset();
buffer.IncrementOffset(ChecksumLength);
var checkSumBeginOffset = buffer.Offset();
WriteBuffer(buffer, shuttingDown);
var checkSumEndOffSet = buffer.Offset();
var bytes = buffer._buffer;
var length = checkSumEndOffSet - checkSumBeginOffset;
var checkSum = CRC32.CheckSum(bytes, checkSumBeginOffset, length);
buffer.Seek(checkSumOffset);
buffer.WriteLong(checkSum);
buffer.Seek(checkSumEndOffSet);
}
private void DefragmentWriteMappedClassId(IDefragmentContext context, ArrayInfo info
, int classIdOffset)
{
ByteArrayBuffer targetBuffer = context.TargetBuffer();
int currentOffset = targetBuffer.Offset();
targetBuffer.Seek(classIdOffset);
int classID = ClassIDFromInfo(Container(context), info);
int mappedID = context.MappedID(classID);
int marshalledMappedId = ClassIdToMarshalledClassId(mappedID, info.Primitive());
targetBuffer.WriteInt(marshalledMappedId);
targetBuffer.Seek(currentOffset);
}
public virtual ByteArrayBuffer Marshall(LocalTransaction transaction, IIntIterator4
ids, int count)
{
ByteArrayBuffer buffer = new ByteArrayBuffer(Const4.IntLength + count * Const4.IntLength
);
int sizeOffset = buffer.Offset();
buffer.WriteInt(0);
int written = 0;
while (count > 0 && ids.MoveNext())
{
buffer.WriteInt(ids.CurrentInt());
++written;
--count;
}
buffer.Seek(sizeOffset);
buffer.WriteInt(written);
return(buffer);
}
public virtual int Offset()
{
return(_current.Offset());
}
private bool CheckSumOK(ByteArrayBuffer buffer, int offset)
{
var initialOffSet = buffer.Offset();
var length = OwnLength();
length -= ChecksumLength;
buffer.Seek(offset);
var readCheckSum = buffer.ReadLong();
var checkSumBeginOffset = buffer.Offset();
var bytes = buffer._buffer;
var calculatedCheckSum = CRC32.CheckSum(bytes, checkSumBeginOffset, length);
buffer.Seek(initialOffSet);
return calculatedCheckSum == readCheckSum;
}
private void Marshall(ByteArrayBuffer buffer, bool shuttingDown)
{
var checkSumOffset = buffer.Offset();
buffer.IncrementOffset(ChecksumLength);
var checkSumBeginOffset = buffer.Offset();
WriteBuffer(buffer, shuttingDown);
var checkSumEndOffSet = buffer.Offset();
var bytes = buffer._buffer;
var length = checkSumEndOffSet - checkSumBeginOffset;
var checkSum = CRC32.CheckSum(bytes, checkSumBeginOffset, length);
buffer.Seek(checkSumOffset);
buffer.WriteLong(checkSum);
buffer.Seek(checkSumEndOffSet);
}
