Method init

src/jrd/vio.cpp:267–313

		}

		bool init(thread_db* tdbb)
		{
			FbStatusVector* status = tdbb->tdbb_status_vector;

			Attachment* att = NULL;

			if (m_ownAttach && !m_attStable.hasData())
				m_attStable = WorkerAttachment::getAttachment(status, getSweepTask()->m_dbb);

			if (m_attStable)
				att = m_attStable->getHandle();

			if (!att)
			{
				Arg::Gds(isc_bad_db_handle).copyTo(status);
				return false;
			}

			tdbb->setDatabase(att->att_database);
			tdbb->setAttachment(att);

			if (m_ownAttach && !m_tra)
			{
				const UCHAR sweep_tpb[] =
				{
					isc_tpb_version1, isc_tpb_read,
					isc_tpb_read_committed, isc_tpb_rec_version
				};

				try
				{
					WorkerContextHolder holder(tdbb, FB_FUNCTION);
					m_tra = TRA_start(tdbb, sizeof(sweep_tpb), sweep_tpb);
					DPM_scan_pages(tdbb);
				}
				catch(const Exception& ex)
				{
					ex.stuffException(tdbb->tdbb_status_vector);
					return false;
				}
			}

			tdbb->setTransaction(m_tra);
			tdbb->tdbb_flags |= TDBB_sweeper;

			return true;
		}

		bool m_inuse;
		bool m_ownAttach;