TrigByteStreamInputSvc Node1 TrigByteStreamInputSvc - m_robDataProviderSvc - m_evtStore - m_monTool - m_checkCTPFragmentModuleID - m_eventsCache - m_maxLB + TrigByteStreamInputSvc() + ~TrigByteStreamInputSvc() + queryInterface() + initialize() + finalize() + nextEvent() + previousEvent() + currentEvent() Node2 ByteStreamInputSvc + ByteStreamInputSvc() + ~ByteStreamInputSvc() + nextEvent() + previousEvent() + setEvent() + currentEvent() + currentEventStatus() + getBlockIterator() + closeBlockIterator() + ready() + generateDataHeader() + positionInBlock() + validateEvent() + interfaceID() Node2->Node1 Node3 AthService - AthService() - AthService() - operator=() Node3->Node2 Node4 AthCommonMsg< Service > + msg() + msg() + msgLvl() Node4->Node3 Node5 Service Node5->Node4