Method walk_relation

src/jrd/validation.cpp:3040–3218

}

Validation::RTN Validation::walk_relation(jrd_rel* relation)
{
/**************************************
 *
 *	w a l k _ r e l a t i o n
 *
 **************************************
 *
 * Functional description
 *	Walk all pages associated with a given relation.
 *
 **************************************/

	try {

	// If relation hasn't been scanned, do so now

	if (!(relation->rel_flags & REL_scanned) || (relation->rel_flags & REL_being_scanned))
	{
		MET_scan_relation(vdr_tdbb, relation);
	}

	// skip deleted relations
	if (relation->rel_flags & (REL_deleted | REL_deleting)) {
		return rtn_ok;
	}

#ifdef DEBUG_VAL_VERBOSE
	if (VAL_debug_level)
		fprintf(stdout, "walk_relation: id %d Format %d %s %s\n",
				   relation->rel_id, relation->rel_current_fmt,
				   relation->rel_name.c_str(), relation->rel_owner_name.c_str());
#endif

	// If it's a view, external file or virtual table, skip this

	if (relation->rel_view_rse || relation->rel_file || relation->isVirtual()) {
		return rtn_ok;
	}

	AutoLock lckRead(vdr_tdbb);
	jrd_rel::GCExclusive lckGC(vdr_tdbb, relation);
	if (vdr_flags & VDR_online)
	{
		lckRead = jrd_rel::createLock(vdr_tdbb, NULL, relation, LCK_relation, false);
		if (!LCK_lock(vdr_tdbb, lckRead, LCK_PR, vdr_lock_tout))
		{
			output("Acquire relation lock failed\n");
			vdr_errors++;
			return rtn_ok;
		}

		if (!lckGC.acquire(vdr_lock_tout))
		{
			output("Acquire garbage collection lock failed\n");
			vdr_errors++;
			return rtn_ok;
		}