public void CopyTo(RingBuffer <T> dst, int length)
{
var src = this;
if (src.AvailableRead < length || dst.AvailableWrite < length)
{
throw new IndexOutOfRangeException();
}
int THIS_MASK = src.mask;
int THAT_MASK = dst.mask;
for (var n = 0; n < length; n++)
{
src.buffer[(src.posWrite + n) & THIS_MASK] = dst.buffer[(dst.posRead + n) & THAT_MASK];
}
src.posWrite = (src.posWrite + length) & THIS_MASK;
dst.posRead = (dst.posRead + length) & THAT_MASK;
src.OffsetWrite(+length);
dst.OffsetWrite(-length);
}
public void CopyTo(RingBuffer <T> dst) => CopyTo(dst, AvailableRead);