Method setLockAttachment

src/jrd/lck.cpp:1501–1573

}

void Lock::setLockAttachment(Jrd::Attachment* attachment)
{
	if (get_owner_type(lck_type) == LCK_OWNER_database)
		return;

	Attachment* att = lck_attachment ? lck_attachment->getHandle() : NULL;
	if (att == attachment)
		return;

	// If lock has no attachment it must not be a part of linked list
	fb_assert(!lck_attachment ? !lck_prior && !lck_next : true);

	// Delist in old attachment
	if (att)
	{
		// Check that attachment seems to be valid, check works only when DEBUG_GDS_ALLOC is defined
		fb_assert(att->att_flags != 0xEEEEEEEE);

		if (lck_prior)
		{
			fb_assert(lck_prior->lck_next == this);
			lck_prior->lck_next = lck_next;
#ifdef DEBUG_LCK_LIST
			lck_prior->lck_next_type = lck_next ? lck_next->lck_type : 0;
#endif
		}
		else
		{
			fb_assert(att->att_long_locks == this);
			att->att_long_locks = lck_next;
#ifdef DEBUG_LCK_LIST
			att->att_long_locks_type = lck_next ? lck_next->lck_type : 0;
#endif
		}

		if (lck_next)
		{
			fb_assert(lck_next->lck_prior == this);
			lck_next->lck_prior = lck_prior;
#ifdef DEBUG_LCK_LIST
			lck_next->lck_prev_type = lck_prior ? lck_prior->lck_type : 0;
#endif
		}

		lck_next = NULL;
		lck_prior = NULL;
	}

	// Enlist in new attachment
	if (attachment)
	{
		// Check that attachment seems to be valid, check works only when DEBUG_GDS_ALLOC is defined
		fb_assert(attachment->att_flags != 0xEEEEEEEE);

		lck_next = attachment->att_long_locks;
		lck_prior = NULL;
		attachment->att_long_locks = this;