public int AppendUnfragmentedMessage(HeaderWriter header, DirectBufferVector[] vectors, int length, ReservedValueSupplier reservedValueSupplier, int activeTermId)
#endif
{
int frameLength = length + DataHeaderFlyweight.HEADER_LENGTH;
int alignedLength = BitUtil.Align(frameLength, FrameDescriptor.FRAME_ALIGNMENT);
long rawTail = GetAndAddRawTail(alignedLength);
int termId = LogBufferDescriptor.TermId(rawTail);
long termOffset = rawTail & 0xFFFFFFFFL;
UnsafeBuffer termBuffer = _termBuffer;
int termLength = termBuffer.Capacity;
CheckTerm(activeTermId, termId);
long resultingOffset = termOffset + alignedLength;
if (resultingOffset > termLength)
{
resultingOffset = HandleEndOfLogCondition(termBuffer, termOffset, header, termLength, termId);
}
else
{
int frameOffset = (int)termOffset;
header.Write(termBuffer, frameOffset, frameLength, LogBufferDescriptor.TermId(rawTail));
int offset = frameOffset + DataHeaderFlyweight.HEADER_LENGTH;
foreach (var vector in vectors)
{
termBuffer.PutBytes(offset, vector.buffer, vector.offset, vector.length);
offset += vector.length;
}
if (null != reservedValueSupplier)
{
long reservedValue = reservedValueSupplier(termBuffer, frameOffset, frameLength);
termBuffer.PutLong(frameOffset + DataHeaderFlyweight.RESERVED_VALUE_OFFSET, reservedValue, ByteOrder.LittleEndian);
}
FrameDescriptor.FrameLengthOrdered(termBuffer, frameOffset, frameLength);
}
return((int)resultingOffset);
}
private long HandleEndOfLogCondition(UnsafeBuffer termBuffer, long termOffset, HeaderWriter header,
int termLength, int termId)
{
int resultingOffset = FAILED;
if (termOffset <= termLength)
{
resultingOffset = TRIPPED;
if (termOffset < termLength)
{
int offset = (int)termOffset;
int paddingLength = termLength - offset;
header.Write(termBuffer, offset, paddingLength, termId);
FrameDescriptor.FrameType(termBuffer, offset, FrameDescriptor.PADDING_FRAME_TYPE);
FrameDescriptor.FrameLengthOrdered(termBuffer, offset, paddingLength);
}
}
return(LogBufferDescriptor.PackTail(termId, resultingOffset));
}
/// <summary>
/// Try to gap fill the current term at a given offset if the gap contains no data.
///
/// Note: the gap offset plus gap length must end on a <seealso cref="FrameDescriptor.FRAME_ALIGNMENT"/> boundary.
/// </summary>
/// <param name="logMetaDataBuffer"> containing the default headers </param>
/// <param name="termBuffer"> to gap fill </param>
/// <param name="termId"> for the current term. </param>
/// <param name="gapOffset"> to fill from </param>
/// <param name="gapLength"> to length of the gap. </param>
/// <returns> true if the gap has been filled with a padding record or false if data found. </returns>
public static bool TryFillGap(UnsafeBuffer logMetaDataBuffer, UnsafeBuffer termBuffer, int termId, int gapOffset, int gapLength)
{
int offset = gapOffset + gapLength - FrameDescriptor.FRAME_ALIGNMENT;
while (offset >= gapOffset)
{
if (0 != termBuffer.GetInt(offset))
{
return(false);
}
offset -= FrameDescriptor.FRAME_ALIGNMENT;
}
LogBufferDescriptor.ApplyDefaultHeader(logMetaDataBuffer, termBuffer, gapOffset);
FrameDescriptor.FrameType(termBuffer, gapOffset, HeaderFlyweight.HDR_TYPE_PAD);
FrameDescriptor.FrameTermOffset(termBuffer, gapOffset);
FrameDescriptor.FrameTermId(termBuffer, gapOffset, termId);
FrameDescriptor.FrameLengthOrdered(termBuffer, gapOffset, gapLength);
return(true);
}
private void PutRawTailOrdered(int termId, int termOffset)
{
_metaDataBuffer.PutLongOrdered((int)_tailAddressOffset, LogBufferDescriptor.PackTail(termId, termOffset));
}
public long Claim(HeaderWriter header, int length, BufferClaim bufferClaim)
{
int frameLength = length + DataHeaderFlyweight.HEADER_LENGTH;
int alignedLength = BitUtil.Align(frameLength, FrameDescriptor.FRAME_ALIGNMENT);
long rawTail = GetAndAddRawTail(alignedLength);
long termOffset = rawTail & 0xFFFFFFFFL;
UnsafeBuffer termBuffer = _termBuffer;
int termLength = termBuffer.Capacity;
long resultingOffset = termOffset + alignedLength;
if (resultingOffset > termLength)
{
resultingOffset = HandleEndOfLogCondition(termBuffer, termOffset, header, termLength, LogBufferDescriptor.TermId(rawTail));
}
else
{
int offset = (int)termOffset;
header.Write(termBuffer, offset, frameLength, LogBufferDescriptor.TermId(rawTail));
bufferClaim.Wrap(termBuffer, offset, frameLength);
}
return(resultingOffset);
}
public long AppendFragmentedMessage(HeaderWriter header, UnsafeBuffer srcBuffer, int srcOffset, int length,
int maxPayloadLength, ReservedValueSupplier reservedValueSupplier)
{
int numMaxPayloads = length / maxPayloadLength;
int remainingPayload = length % maxPayloadLength;
int lastFrameLength = remainingPayload > 0
? BitUtil.Align(remainingPayload + DataHeaderFlyweight.HEADER_LENGTH, FrameDescriptor.FRAME_ALIGNMENT)
: 0;
int requiredLength = (numMaxPayloads * (maxPayloadLength + DataHeaderFlyweight.HEADER_LENGTH)) +
lastFrameLength;
long rawTail = GetAndAddRawTail(requiredLength);
int termId = LogBufferDescriptor.TermId(rawTail);
long termOffset = rawTail & 0xFFFFFFFFL;
UnsafeBuffer termBuffer = _termBuffer;
int termLength = termBuffer.Capacity;
long resultingOffset = termOffset + requiredLength;
if (resultingOffset > termLength)
{
resultingOffset = HandleEndOfLogCondition(termBuffer, termOffset, header, termLength, termId);
}
else
{
int offset = (int)termOffset;
byte flags = FrameDescriptor.BEGIN_FRAG_FLAG;
int remaining = length;
do
{
int bytesToWrite = Math.Min(remaining, maxPayloadLength);
int frameLength = bytesToWrite + DataHeaderFlyweight.HEADER_LENGTH;
int alignedLength = BitUtil.Align(frameLength, FrameDescriptor.FRAME_ALIGNMENT);
header.Write(termBuffer, offset, frameLength, termId);
termBuffer.PutBytes(offset + DataHeaderFlyweight.HEADER_LENGTH, srcBuffer,
srcOffset + (length - remaining), bytesToWrite);
if (remaining <= maxPayloadLength)
{
flags |= FrameDescriptor.END_FRAG_FLAG;
}
FrameDescriptor.FrameFlags(termBuffer, offset, flags);
if (null != reservedValueSupplier)
{
long reservedValue = reservedValueSupplier(termBuffer, offset, frameLength);
termBuffer.PutLong(offset + DataHeaderFlyweight.RESERVED_VALUE_OFFSET, reservedValue);
}
FrameDescriptor.FrameLengthOrdered(termBuffer, offset, frameLength);
flags = 0;
offset += alignedLength;
remaining -= bytesToWrite;
} while (remaining > 0);
}
return(resultingOffset);
}
public long AppendUnfragmentedMessage(HeaderWriter header, UnsafeBuffer srcBuffer, int srcOffset, int length, ReservedValueSupplier reservedValueSupplier)
#endif
{
int frameLength = length + DataHeaderFlyweight.HEADER_LENGTH;
int alignedLength = BitUtil.Align(frameLength, FrameDescriptor.FRAME_ALIGNMENT);
long rawTail = GetAndAddRawTail(alignedLength);
long termOffset = rawTail & 0xFFFFFFFFL;
UnsafeBuffer termBuffer = _termBuffer;
int termLength = termBuffer.Capacity;
long resultingOffset = termOffset + alignedLength;
if (resultingOffset > termLength)
{
resultingOffset = HandleEndOfLogCondition(termBuffer, termOffset, header, termLength, LogBufferDescriptor.TermId(rawTail));
}
else
{
int offset = (int)termOffset;
header.Write(termBuffer, offset, frameLength, LogBufferDescriptor.TermId(rawTail));
termBuffer.PutBytes(offset + DataHeaderFlyweight.HEADER_LENGTH, srcBuffer, srcOffset, length);
if (null != reservedValueSupplier)
{
long reservedValue = reservedValueSupplier(termBuffer, offset, frameLength);
termBuffer.PutLong(offset + DataHeaderFlyweight.RESERVED_VALUE_OFFSET, reservedValue);
}
FrameDescriptor.FrameLengthOrdered(termBuffer, offset, frameLength);
}
return(resultingOffset);
}
public long Position()
{
var resultingOffset = BitUtil.Align(TermOffset + FrameLength, FrameDescriptor.FRAME_ALIGNMENT);
return(LogBufferDescriptor.ComputePosition(TermId, resultingOffset, _positionBitsToShift, _initialTermId));
}
public int AppendFragmentedMessage(HeaderWriter header, DirectBufferVector[] vectors, int length,
int maxPayloadLength, ReservedValueSupplier reservedValueSupplier, int activeTermId)
{
int numMaxPayloads = length / maxPayloadLength;
int remainingPayload = length % maxPayloadLength;
int lastFrameLength = remainingPayload > 0 ? BitUtil.Align(remainingPayload + DataHeaderFlyweight.HEADER_LENGTH, FrameDescriptor.FRAME_ALIGNMENT) : 0;
int requiredLength = (numMaxPayloads * (maxPayloadLength + DataHeaderFlyweight.HEADER_LENGTH)) + lastFrameLength;
long rawTail = GetAndAddRawTail(requiredLength);
int termId = LogBufferDescriptor.TermId(rawTail);
long termOffset = rawTail & 0xFFFFFFFFL;
UnsafeBuffer termBuffer = _termBuffer;
int termLength = termBuffer.Capacity;
CheckTerm(activeTermId, termId);
long resultingOffset = termOffset + requiredLength;
if (resultingOffset > termLength)
{
resultingOffset = HandleEndOfLogCondition(termBuffer, termOffset, header, termLength, termId);
}
else
{
int frameOffset = (int)termOffset;
byte flags = FrameDescriptor.BEGIN_FRAG_FLAG;
int remaining = length;
int vectorIndex = 0;
int vectorOffset = 0;
do
{
int bytesToWrite = Math.Min(remaining, maxPayloadLength);
int frameLength = bytesToWrite + DataHeaderFlyweight.HEADER_LENGTH;
int alignedLength = BitUtil.Align(frameLength, FrameDescriptor.FRAME_ALIGNMENT);
header.Write(termBuffer, frameOffset, frameLength, termId);
int bytesWritten = 0;
int payloadOffset = frameOffset + DataHeaderFlyweight.HEADER_LENGTH;
do
{
var vector = vectors[vectorIndex];
int vectorRemaining = vector.length - vectorOffset;
int numBytes = Math.Min(bytesToWrite - bytesWritten, vectorRemaining);
termBuffer.PutBytes(payloadOffset, vector.buffer, vector.offset + vectorOffset, numBytes);
bytesWritten += numBytes;
payloadOffset += numBytes;
vectorOffset += numBytes;
if (vectorRemaining <= numBytes)
{
vectorIndex++;
vectorOffset = 0;
}
} while (bytesWritten < bytesToWrite);
if (remaining <= maxPayloadLength)
{
flags |= FrameDescriptor.END_FRAG_FLAG;
}
FrameDescriptor.FrameFlags(termBuffer, frameOffset, flags);
if (null != reservedValueSupplier)
{
long reservedValue = reservedValueSupplier(termBuffer, frameOffset, frameLength);
termBuffer.PutLong(frameOffset + DataHeaderFlyweight.RESERVED_VALUE_OFFSET, reservedValue, ByteOrder.LittleEndian);
}
FrameDescriptor.FrameLengthOrdered(termBuffer, frameOffset, frameLength);
flags = 0;
frameOffset += alignedLength;
remaining -= bytesToWrite;
} while (remaining > 0);
}
return((int)resultingOffset);
}