private ReadableBuffer(ref ReadableBuffer buffer)
{
var begin = buffer.BufferStart;
var end = buffer.BufferEnd;
BufferSegment segmentTail;
var segmentHead = BufferSegment.Clone(begin, end, out segmentTail);
begin = new ReadCursor(segmentHead);
end = new ReadCursor(segmentTail, segmentTail.End);
BufferStart = begin;
BufferEnd = end;
BufferLength = buffer.BufferLength;
}
internal void Append(ReadableBuffer buffer)
{
if (buffer.IsEmpty)
{
return; // nothing to do
}
EnsureAlloc();
BufferSegment clonedEnd;
var clonedBegin = BufferSegment.Clone(buffer.Start, buffer.End, out clonedEnd);
if (_writingHead == null)
{
// No active write
lock (_sync)
{
if (_commitHead == null)
{
// No allocated buffers yet, not locking as _readHead will be null
_commitHead = clonedBegin;
}
else
{
Debug.Assert(_commitHead.Next == null);
// Allocated buffer, append as next segment
_commitHead.Next = clonedBegin;
}
}
}
else
{
Debug.Assert(_writingHead.Next == null);
// Active write, append as next segment
_writingHead.Next = clonedBegin;
}
// Move write head to end of buffer
_writingHead = clonedEnd;
_currentWriteLength += buffer.Length;
}