drcl.inet.core.queue
Class PreemptPriorityQueue

java.lang.Object
  drcl.DrclObj
      drcl.comp.Component
          drcl.comp.queue.ActiveQueue
              drcl.inet.core.Queue
                  drcl.inet.core.queue.PriorityQueue
                      drcl.inet.core.queue.PreemptPriorityQueue

All Implemented Interfaces:

java.lang.Cloneable, InetConstants, InetCoreConstants, ObjectCloneable, ObjectDuplicable, PktClassifier, java.io.Serializable

public class PreemptPriorityQueue

extends PriorityQueue

PreemptPriorityQueue is the same as PriorityQueue except that an arrived higher-priority packet can preempt (and drop) a lower-priority packet when the queue is full.

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class drcl.comp.Component

Component.Locks

Field Summary

Fields inherited from class drcl.inet.core.queue.PriorityQueue

EVENT_QSIZE_PORT_ID

Fields inherited from class drcl.comp.queue.ActiveQueue

OUTPUT_PORT_ID

Fields inherited from class drcl.comp.Component

FLAG_COMPONENT_NOTIFICATION, FLAG_DEBUG_ENABLED, FLAG_DIRECT_OUTPUT_ENABLED, FLAG_ENABLED, FLAG_ERROR_ENABLED, FLAG_EVENT_ENABLED, FLAG_GARBAGE_DISPLAY_ENABLED, FLAG_GARBAGE_ENABLED, FLAG_PORT_NOTIFICATION, FLAG_STARTED, FLAG_STOPPED, FLAG_TRACE_ENABLED, FLAG_UNDEFINED_START, id, infoPort, locks, name, parent, PortGroup_DEFAULT_GROUP, PortGroup_EVENT, PortGroup_SERVICE, Root, Trace_DATA, Trace_SEND

Fields inherited from interface drcl.inet.core.InetCoreConstants

CONFIG_PORT_ID, PULL_PORT_ID

Fields inherited from interface drcl.inet.InetConstants

BYTE_MODE, DEFAULT_BANDWIDTH, DEFAULT_BUFFER_SIZE, DEFAULT_MTU, EVENT_ID_CHANGED_PORT_ID, EVENT_IDENTITY_ADDED, EVENT_IDENTITY_REMOVED, EVENT_IF_NEIGHBOR_DOWN, EVENT_IF_NEIGHBOR_UP, EVENT_IF_PORT_ID, EVENT_LINK_BROKEN, EVENT_LINK_BROKEN_PORT_ID, EVENT_MCAST_HOST_PORT_ID, EVENT_PKT_ARRIVAL, EVENT_PKT_ARRIVAL_PORT_ID, EVENT_RT_ENTRY_ADDED, EVENT_RT_ENTRY_MODIFIED, EVENT_RT_ENTRY_REMOVED, EVENT_RT_MCAST_CHANGED_PORT_ID, EVENT_RT_UCAST_CHANGED_PORT_ID, EVENT_VIF_NEIGHBOR_DOWN, EVENT_VIF_NEIGHBOR_UP, EVENT_VIF_PORT_ID, HOST_ENTRY_EXT, ID_CSL, ID_TRACE_RT, MCAST_QUERY_PORT_ID, PACKET_MODE, PID_AODV, PID_DV, PID_DVMRP, PID_HELLO, PID_IGMP, PID_OSPF, PID_RSVP, PID_TCP, PID_TRACE_RT, PID_UDP, SERVICE_CONFIGSW_PORT_ID, SERVICE_ID_PORT_ID, SERVICE_IF_PORT_ID, SERVICE_MCAST_PORT_ID, SERVICE_RT_PORT_ID, UCAST_QUERY_PORT_ID

Constructor Summary

PreemptPriorityQueue()

PreemptPriorityQueue(java.lang.String id_)

Method Summary

java.lang.Object

enqueue(java.lang.Object obj_) Enqueues the object at the end of the queue

Methods inherited from class drcl.inet.core.queue.PriorityQueue

classify, dequeue, duplicate, firstElement, getCapacity, getQLogic, getQueue, getSize, info, isDropHeadEnabled, isEmpty, isFull, lastElement, peekAt, reset, setCapacity, setClassifier, setDropHeadEnabled, setLevels, setQLogic

Methods inherited from class drcl.inet.core.Queue

getMode, setMode

Methods inherited from class drcl.comp.queue.ActiveQueue

enqueueAt, getAvailableSize, increaseEnqueCount, info, retrieveAt

Methods inherited from class drcl.comp.Component

addComponent, addComponent, addEventPort, addEventPort, addForkPort, addPort, addPort, addPort, addPort, addPort, addPort, addPort, addPort, addServerPort, addServerPort, cancelFork, connect, containsComponent, containsComponent, containsPort, debug, disconnectAll, disconnectAllPeers, disconnectAllPorts, drop, drop, error, error, expose, exposeEventPorts, exposePort, exposePort, exposePort, exposePort, exposePort, findAvailable, findAvailable, findAvailable, fork, forkAt, getAllComponents, getAllPorts, getAllPorts, getAllWiresInside, getAllWiresInsideOut, getAllWiresOut, getComponent, getComponentFlag, getComponentFlag, getContract, getContractHT, getContractHT, getDebugFlagsInBinary, getDebugLevelNames, getID, getName, getParent, getPort, getPort, getRoot, getTime, iduplicate, isAncestorOf, isContainer, isDebugEnabled, isDebugEnabledAt, isDirectlyRelatedTo, isDirectOutputEnabled, isEnabled, isErrorNoticeEnabled, isEventExportEnabled, isGarbageDisplayEnabled, isGarbageEnabled, isPortRemovable, isStarted, isStopped, isTraceEnabled, lock, notify, notifyAll, operate, reboot, removeAll, removeAllComponents, removeAllPorts, removeAllPorts, removeComponent, removeComponent, removePort, removePort, removePort, resume, run, sduplicate, send, sendAt, setComponentFlag, setComponentFlag, setDebugEnabled, setDebugEnabled, setDebugEnabledAt, setDebugEnabledAt, setDebugEnabledAt, setDirectOutputEnabled, setDirectOutputEnabled, setEnabled, setErrorNoticeEnabled, setErrorNoticeEnabled, setEventExportEnabled, setEventExportEnabled, setExecutionBoundary, setGarbageDisplayEnabled, setGarbageDisplayEnabled, setGarbageEnabled, setGarbageEnabled, setID, setID, setName, setPort, setPort, setTraceEnabled, setTraceEnabled, sleepFor, sleepUntil, stop, toString, unexpose, unlock, useLocalForkManager, useLocalForkManager, wait

Methods inherited from class drcl.DrclObj

clone

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PreemptPriorityQueue

public PreemptPriorityQueue()

PreemptPriorityQueue

public PreemptPriorityQueue(java.lang.String id_)

Method Detail

enqueue

public java.lang.Object enqueue(java.lang.Object obj_)

Enqueues the object at the end of the queue

Overrides:

enqueue in class PriorityQueue

Returns:

the object being dropped due to the enqueue; null otherwise.