Method getJumpNodeSize

src/jrd/btn.cpp:126–172

USHORT IndexJumpNode::getJumpNodeSize() const
{
/**************************************
 *
 *	g e t J u m p N o d e S i z e
 *
 **************************************
 *
 * Functional description
 *	Return the size needed to store
 *  this node.
 *
 **************************************/
	USHORT result = 0;

	// Size needed for prefix
	USHORT number = prefix;
	if (number & 0xC000) {
		result += 3;
	}
	else if (number & 0xFF80) {
		result += 2;
	}
	else {
		result += 1;
	}

	// Size needed for length
	number = length;
	if (number & 0xC000) {
		result += 3;
	}
	else if (number & 0xFF80) {
		result += 2;
	}
	else {
		result += 1;
	}

	// Size needed for offset
	// NOTE! offset can be unknown when this function is called,
	// therefor we can't use a compression method.
	result += sizeof(USHORT);
	// Size needed for data
	result += length;
	return result;
}


USHORT IndexNode::getNodeSize(bool leafNode) const