Function LCK_downgrade

src/jrd/lck.cpp:433–466

void LCK_downgrade(thread_db* tdbb, Lock* lock)
{
/**************************************
 *
 *	L C K _ d o w n g r a d e
 *
 **************************************
 *
 * Functional description
 *	Downgrade a lock.
 *
 **************************************/
	SET_TDBB(tdbb);
	fb_assert(LCK_CHECK_LOCK(lock));

#ifdef DEBUG_LCK
	LckSync sync(lock, "LCK_downgrade");
#endif

	if (lock->lck_id && lock->lck_physical != LCK_none)
	{
		const USHORT level = DOWNGRADE(tdbb, lock);
		if (!lock->lck_compatible)
			lock->lck_physical = lock->lck_logical = level;
	}

	if (lock->lck_physical == LCK_none)
	{
		lock->lck_id = lock->lck_data = 0;
	    lock->setLockAttachment(NULL);
	}

	fb_assert(LCK_CHECK_LOCK(lock));
}


void LCK_fini(thread_db* tdbb, enum lck_owner_t owner_type)