Module org.bzdev.devqsim

Package org.bzdev.devqsim

Class LifoServerQueue<QS extends QueueServer>

java.lang.Object

org.bzdev.devqsim.SimObject

org.bzdev.devqsim.DefaultSimObject

org.bzdev.devqsim.ServerQueue<DelayTaskQueue.Parameter,QS>

org.bzdev.devqsim.LinearServerQueue<QS>

org.bzdev.devqsim.LifoServerQueue<QS>

All Implemented Interfaces:

QueueStatus, NamedObjectOps

public class LifoServerQueue<QS extends QueueServer>
extends LinearServerQueue<QS>

LIFO server queue. This implements a ServerQueue in which the entries are processed in LIFO (Last In, First Out) order.

See Also:

• ServerQueue

Constructor Summary

Constructors

Constructor	Description
LifoServerQueue(Simulation sim, String name, boolean intern, QS... servers)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected Object	clone()	Creates and returns a copy of this object.
final boolean	delete()	Delete an object.
final boolean	deletePending()	Determine if an object is being deleted.
final String	getName()	Get an object's name.
protected Simulation	getObjectNamer()	Get the object namer for a named object.
final boolean	isDeleted()	Determine if an object has been deleted.
boolean	isInterned()	Determine if an object is interned in a object namer's tables.

Methods inherited from class org.bzdev.devqsim.LinearServerQueue

add, add, add, add, add, add, add, add, addCallObject, addCallObject, addCurrentTask, addCurrentTask, addCurrentTask, addCurrentTask, addCurrentTask, addCurrentTaskScriptObject, addCurrentTaskScriptObject, addCurrentTaskScriptObject, addCurrentTaskScriptObject, addTaskObject, addTaskObject

Methods inherited from class org.bzdev.devqsim.ServerQueue

addCurrentTask, addCurrentTaskScriptObject, addObserver, canDelete, canFreeze, doAdd, doAdd, doAdd, doAdd, doAddCallObject, doAddTaskObject, freeze, getDeletePolicy, getIdleServer, getTaskQueue, inUseCount, isBusy, isFrozen, onDelete, printConfiguration, printState, putIdleServer, removeObserver, serverCount, setCanFreeze, setDeletePolicy, size

Methods inherited from class org.bzdev.devqsim.DefaultSimObject

getSimulation

Methods inherited from class org.bzdev.devqsim.SimObject

addSimulationListener, addTraceSet, bindCallable, bindCallable, bindCallable, bindCallable, bindRunnable, bindRunnable, bindRunnable, bindRunnable, callableObject, callableScript, callScriptFunction, callScriptMethod, clearTraceSets, evalScript, getEventListenerList, getScriptObject, getTraceSets, printConfiguration, printConfiguration, printConfiguration, printConfiguration, printConfiguration, printConfiguration, printState, printState, printState, printState, printState, printState, putScriptObject, removeSimulationListener, removeTraceSet, runnableObject, runnableScript, scheduleCall, scheduleCall, scheduleCall, scheduleCall, scheduleCallObject, scheduleScript, scheduleTask, scheduleTask, scheduleTask, scheduleTask, scheduleTaskObject, scheduleTaskScript, startImmediateTask, startImmediateTask, trace, trace, unscheduledTaskThread, unscheduledTaskThread, update, update, usesTraceSet

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.bzdev.obnaming.NamedObjectOps

delete, deletePending, getName, isDeleted, isInterned

Methods inherited from interface org.bzdev.devqsim.QueueStatus

getName, isDeleted, isInterned

Constructor Details

LifoServerQueue

public LifoServerQueue(Simulation sim,
 String name,
 boolean intern,
 QS... servers)
                throws IllegalArgumentException

Constructor.

Parameters:

sim - the simulation

name - the name of the queue

intern - true if the queue name should be interned in the simulation tables; false otherwise

servers - the queue's servers

Throws:

IllegalArgumentException - typically means a name is already in use

Method Details

clone

protected Object clone()
                throws CloneNotSupportedException

Creates and returns a copy of this object. This method will throw the exception CloneNotSupportedException if the object is interned.

Overrides:

clone in class Object

Throws:

CloneNotSupportedException - a clone could not be created

See Also:

• Object.clone()

isInterned

public boolean isInterned()

Determine if an object is interned in a object namer's tables.

Specified by:

isInterned in interface NamedObjectOps

Returns:

true if the object is interned; false if not

getObjectNamer

protected Simulation getObjectNamer()

Get the object namer for a named object.

Returns:

the object namer for this named object

getName

public final String getName()

Get an object's name.

Specified by:

getName in interface NamedObjectOps

Returns:

the name of the object

delete

public final boolean delete()

Delete an object. An object can only be deleted once. If this method returns true, the object (if interned) will have been removed from the object namer tables.

The implementations provided by DefaultNamedObect and generated because of a @NamedObject annotation provide a protected method named onDelete. A subclass that overrides onDelete() must call the onDelete method of its superclass after it's onDelete method has been called and any cleanup actions performed. In some cases, this may happen at a later time (e.g., if a thread is used for some of the cleanup operations or if it is otherwise necessary to wait).

Specified by:

delete in interface NamedObjectOps

Returns:

true if the deletion request was accepted; false otherwise

isDeleted

public final boolean isDeleted()

Determine if an object has been deleted. An object is deleted if the method delete() has been called and returned true.

Specified by:

isDeleted in interface NamedObjectOps

Returns:

true if deleted; false otherwise

deletePending

public final boolean deletePending()

Determine if an object is being deleted. An deletion is pending if the method delete() has been called and returned true but the deletion has not been completed.

Specified by:

deletePending in interface NamedObjectOps

Returns:

true if deletion is pending; false otherwise