Method retrieveRecord

src/jrd/Monitoring.cpp:116–157

bool MonitoringTableScan::retrieveRecord(thread_db* tdbb, jrd_rel* relation,
										 FB_UINT64 position, Record* record) const
{
	MonitoringSnapshot* const snapshot = MonitoringSnapshot::create(tdbb);
	if (!snapshot->getData(relation)->fetch(position, record))
		return false;

	if (relation->rel_id == rel_mon_attachments || relation->rel_id == rel_mon_statements)
	{
		const USHORT fieldId = (relation->rel_id == rel_mon_attachments) ?
			(USHORT) f_mon_att_idle_timer : (USHORT) f_mon_stmt_timer;

		dsc desc;
		if (EVL_field(relation, record, fieldId, &desc))
		{
			SINT64 clock;
			memcpy(&clock, desc.dsc_address, sizeof(clock));

			ISC_TIMESTAMP_TZ* ts = reinterpret_cast<ISC_TIMESTAMP_TZ*> (desc.dsc_address);
			ts->utc_timestamp = TimeZoneUtil::getCurrentGmtTimeStamp().utc_timestamp;

			if (relation->rel_id == rel_mon_attachments)
			{
				const SINT64 currClock = fb_utils::query_performance_counter() / fb_utils::query_performance_frequency();
				NoThrowTimeStamp::add10msec(&ts->utc_timestamp, clock - currClock, ISC_TIME_SECONDS_PRECISION);
				NoThrowTimeStamp::round_time(ts->utc_timestamp.timestamp_time, 0);
			}
			else
			{
				const SINT64 currClock = fb_utils::query_performance_counter() * 1000 / fb_utils::query_performance_frequency();
				NoThrowTimeStamp::add10msec(&ts->utc_timestamp, clock - currClock, ISC_TIME_SECONDS_PRECISION / 1000);
			}

			// hvlad: this will assign local system (server) time zone that was actual
			// when current attachment created.
			Attachment* att = tdbb->getAttachment();
			ts->time_zone = att->att_timestamp.time_zone;
		}
	}

	return true;
}


// MonitoringData class