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Hi folks,
I was revisiting a model from last week when I ran into something.
The attached model executes upon the first run. Thereafter it throws an exception that “queue_out” is undefined. If you completely close out PtII and open the model again, you can again run it once, etc.
The exception is thrown in ParseTreeEvaluator.java, line 514, and caught on line 165 of OutputActionsAttribute.java. The former gets a null return from ModelScope. java by way of FSMActor.java.
Debugging in Eclipse: start PtII, load the model, and run it once. Then put a BP on OutputActionsAttribute.java:164. Press the green “Resume” arrow five times. Put another breakpoint on FSMActor.java:1449. Step through; what happens is that a bunch of getAttribute() methods are called, ultimately leading to the NamedList.get() function being called (NamedList.java:165). This returns “null”, which seems to be the start of the problem (?). Here is the call stack at this point:
Thread [Thread-9] (Suspended) NamedList.get(String) line: 169 ModalController(NamedObj).getAttribute(String) line: 899 ModalController(Entity).getAttribute(String) line: 309 ModalController(CompositeEntity).getAttribute(String) line: 834 ModelScope._searchIn(Variable, NamedObj, String) line: 129 ModelScope.getScopedVariable(Variable, NamedObj, String) line: 112 FSMActor$PortScope.get(String) line: 1449 ParseTreeEvaluator.visitLeafNode(ASTPtLeafNode) line: 514 ASTPtLeafNode.visit(ParseTreeVisitor) line: 126 ParseTreeEvaluator._evaluateChild(ASTPtRootNode, int) line: 1117 ParseTreeEvaluator._evaluateAllChildren(ASTPtRootNode) line: 1071 ParseTreeEvaluator.visitSumNode(ASTPtSumNode) line: 961 ASTPtSumNode.visit(ParseTreeVisitor) line: 129 ParseTreeEvaluator.evaluateParseTree(ASTPtRootNode, ParserScope) line: 93 OutputActionsAttribute.execute() line: 163 ModalController(FSMActor)._chooseTransition(List) line: 993 FSMDirector.fire() line: 292 ModalModel(CompositeActor).fire() line: 329 DEDirector.fire() line: 506 MultiInstanceComposite(CompositeActor).fire() line: 329 DEDirector.fire() line: 506 TypedCompositeActor(CompositeActor).fire() line: 329 Manager.iterate() line: 601 Manager.execute() line: 319 Manager.run() line: 951 Manager$2.run() line: 1003
Any ideas on what the cause is?
Chuck Lutz Lockheed Martin Systems of Systems - Modeling and Operations Analysis BMC4I Modeling and Simulation Moorestown, NJ (856)638-7234 (office)
“Everyone spoke of an information overload, but what there was in fact was a non-information overload.” – Richard Saul Wurman
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<?xml version="1.0" standalone="no"?>
<!DOCTYPE entity PUBLIC "-//UC Berkeley//DTD MoML 1//EN"
"http://ptolemy.eecs.berkeley.edu/xml/dtd/MoML_1.dtd";>
<entity name="QueueOutsideMIC" class="ptolemy.actor.TypedCompositeActor">
<property name="_createdBy" class="ptolemy.kernel.attributes.VersionAttribute" value="5.0.1">
</property>
<property name="_windowProperties" class="ptolemy.actor.gui.WindowPropertiesAttribute" value="{bounds={0, 1, 1154, 359}, maximized=false}">
</property>
<property name="_vergilSize" class="ptolemy.actor.gui.SizeAttribute" value="[939, 250]">
</property>
<property name="_vergilZoomFactor" class="ptolemy.data.expr.ExpertParameter" value="1.0">
</property>
<property name="_vergilCenter" class="ptolemy.data.expr.ExpertParameter" value="{469.5, 125.0}">
</property>
<property name="DE Director" class="ptolemy.domains.de.kernel.DEDirector">
<property name="stopTime" class="ptolemy.data.expr.Parameter" value="20">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[65.0, 40.0]">
</property>
</property>
<property name="Annotation" class="ptolemy.vergil.kernel.attributes.TextAttribute">
<property name="textSize" class="ptolemy.data.expr.Parameter" value="10">
</property>
<property name="text" class="ptolemy.kernel.util.StringAttribute" value="Beginnings of attempt to get parallel outputs from MIC into one queue.">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[535.0, 160.0]">
</property>
</property>
<property name="Annotation2" class="ptolemy.vergil.kernel.attributes.TextAttribute">
<property name="textSize" class="ptolemy.data.expr.Parameter" value="10">
</property>
<property name="text" class="ptolemy.kernel.util.StringAttribute" value="Diamond: see Vol. 1, p. 75">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[265.0, 85.0]">
</property>
</property>
<entity name="MIC" class="ptolemy.actor.lib.hoc.MultiInstanceComposite">
<property name="nInstances" class="ptolemy.data.expr.Parameter" value="5">
</property>
<doc>Creates multiple instances of itself</doc>
<property name="_location" class="ptolemy.kernel.util.Location" value="[365.0, 135.0]">
</property>
<property name="annotation" class="ptolemy.kernel.util.Attribute">
<property name="_hideName" class="ptolemy.kernel.util.SingletonAttribute">
</property>
<property name="_iconDescription" class="ptolemy.kernel.util.SingletonConfigurableAttribute">
<configure><svg><text x="20" y="20" style="font-size:14; font-family:SansSerif; fill:blue">Make sure there is a director here!</text></svg></configure>
</property>
<property name="_smallIconDescription" class="ptolemy.kernel.util.SingletonConfigurableAttribute">
<configure>
<svg>
<text x="20" style="font-size:14; font-family:SansSerif; fill:blue" y="20">-A-</text>
</svg>
</configure>
</property>
<property name="_controllerFactory" class="ptolemy.vergil.basic.NodeControllerFactory">
</property>
<property name="_editorFactory" class="ptolemy.vergil.toolbox.AnnotationEditorFactory">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[120.0, 10.0]">
</property>
</property>
<property name="DE Director" class="ptolemy.domains.de.kernel.DEDirector">
<property name="_location" class="ptolemy.kernel.util.Location" value="[65.0, 35.0]">
</property>
</property>
<property name="_windowProperties" class="ptolemy.actor.gui.WindowPropertiesAttribute" value="{bounds={0, 364, 604, 287}, maximized=false}">
</property>
<property name="_vergilSize" class="ptolemy.actor.gui.SizeAttribute" value="[600, 400]">
</property>
<property name="_vergilZoomFactor" class="ptolemy.data.expr.ExpertParameter" value="1.0">
</property>
<property name="_vergilCenter" class="ptolemy.data.expr.ExpertParameter" value="{300.0, 200.0}">
</property>
<port name="q_out" class="ptolemy.actor.TypedIOPort">
<property name="output"/>
<property name="_location" class="ptolemy.kernel.util.Location" value="[275.0, 100.0]">
</property>
<property name="_showName" class="ptolemy.data.expr.SingletonParameter" value="true">
</property>
<property name="_type" class="ptolemy.actor.TypeAttribute" value="int">
</property>
</port>
<port name="q_in" class="ptolemy.actor.TypedIOPort">
<property name="input"/>
<property name="_location" class="ptolemy.kernel.util.Location" value="[30.0, 100.0]">
</property>
<property name="_showName" class="ptolemy.data.expr.SingletonParameter" value="true">
</property>
<property name="_type" class="ptolemy.actor.TypeAttribute" value="int">
</property>
</port>
<entity name="ModalModel" class="ptolemy.domains.fsm.modal.ModalModel">
<property name="_tableauFactory" class="ptolemy.vergil.fsm.modal.ModalTableauFactory">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="{130.0, 100.0}">
</property>
<port name="queue_in" class="ptolemy.domains.fsm.modal.ModalPort">
<property name="input"/>
<property name="_showName" class="ptolemy.data.expr.SingletonParameter" value="true">
</property>
<property name="_hide" class="ptolemy.data.expr.SingletonParameter" value="false">
</property>
<property name="_cardinal" class="ptolemy.kernel.util.StringAttribute" value="WEST">
</property>
</port>
<port name="queue_out" class="ptolemy.domains.fsm.modal.ModalPort">
<property name="output"/>
<property name="_cardinal" class="ptolemy.kernel.util.StringAttribute" value="EAST">
</property>
<property name="_showName" class="ptolemy.data.expr.SingletonParameter" value="true">
</property>
</port>
<entity name="_Controller" class="ptolemy.domains.fsm.modal.ModalController">
<property name="initialStateName" class="ptolemy.kernel.util.StringAttribute" value="init">
</property>
<property name="_library" class="ptolemy.moml.LibraryAttribute">
<configure>
<entity name="state library" class="ptolemy.kernel.CompositeEntity"><input source="ptolemy/configs/basicUtilities.xml"></input><entity name="state" class="ptolemy.domains.fsm.kernel.State"><property name="_centerName" class="ptolemy.kernel.util.Attribute"></property><property name="_controllerFactory" class="ptolemy.vergil.fsm.modal.HierarchicalStateControllerFactory"></property></entity></entity>
</configure>
</property>
<property name="_windowProperties" class="ptolemy.actor.gui.WindowPropertiesAttribute" value="{bounds={462, 365, 815, 327}, maximized=false}">
</property>
<property name="_vergilSize" class="ptolemy.actor.gui.SizeAttribute" value="[600, 400]">
</property>
<property name="_vergilZoomFactor" class="ptolemy.data.expr.ExpertParameter" value="1.0">
</property>
<property name="_vergilCenter" class="ptolemy.data.expr.ExpertParameter" value="{300.0, 200.0}">
</property>
<property name="annotation2" class="ptolemy.kernel.util.Attribute">
<property name="_hideName" class="ptolemy.kernel.util.SingletonAttribute">
</property>
<property name="_iconDescription" class="ptolemy.kernel.util.SingletonConfigurableAttribute">
<configure><svg><text x="20" y="20" style="font-size:9; font-family:SansSerif; fill:blue">Changed queue_in to just input (4-May-04 based on advice from EAL):
"The problem here is that queue_in is both an input and an output. DE does not support
such ports (they in fact are treated as causality loops). Is there a reason that you
made queue_in be both an input and output? If I change it to just be an input, then the
model runs."
</text></svg></configure>
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[-10.0, 0.0]">
</property>
<property name="_controllerFactory" class="ptolemy.vergil.basic.NodeControllerFactory">
</property>
<property name="_editorFactory" class="ptolemy.vergil.toolbox.AnnotationEditorFactory">
</property>
</property>
<property name="annotation3" class="ptolemy.kernel.util.Attribute">
<property name="_hideName" class="ptolemy.kernel.util.SingletonAttribute">
</property>
<property name="_iconDescription" class="ptolemy.kernel.util.SingletonConfigurableAttribute">
<configure><svg><text x="20" y="20" style="font-size:9; font-family:SansSerif; fill:blue">(9May06: currently supressed, possibly,
by bus relation problem):
Changed to multiport because:
.QueueOutsideMIC.MIC.preinitialize():
output port q_out must be connected to
a multi-port in .QueueOutsideMIC.MIC
=>changed back to single port</text></svg></configure>
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[395.0, 0.0]">
</property>
<property name="_controllerFactory" class="ptolemy.vergil.basic.NodeControllerFactory">
</property>
<property name="_editorFactory" class="ptolemy.vergil.toolbox.AnnotationEditorFactory">
</property>
</property>
<port name="queue_in" class="ptolemy.domains.fsm.modal.RefinementPort">
<property name="input"/>
<property name="_location" class="ptolemy.kernel.util.Location" value="[25.0, 125.0]">
</property>
</port>
<port name="queue_out" class="ptolemy.domains.fsm.modal.RefinementPort">
<property name="input"/>
<property name="output"/>
<property name="_location" class="ptolemy.kernel.util.Location" value="[435.0, 120.0]">
</property>
</port>
<entity name="Using" class="ptolemy.domains.fsm.kernel.State">
<property name="_controllerFactory" class="ptolemy.vergil.fsm.modal.HierarchicalStateControllerFactory">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[95.0, 120.0]">
</property>
</entity>
<entity name="Idle" class="ptolemy.domains.fsm.kernel.State">
<property name="_controllerFactory" class="ptolemy.vergil.fsm.modal.HierarchicalStateControllerFactory">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[375.0, 120.0]">
</property>
</entity>
<entity name="init" class="ptolemy.domains.fsm.kernel.State">
<property name="_controllerFactory" class="ptolemy.vergil.fsm.modal.HierarchicalStateControllerFactory">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[335.0, 190.0]">
</property>
</entity>
<relation name="relation" class="ptolemy.domains.fsm.kernel.Transition">
<property name="guardExpression" class="ptolemy.kernel.util.StringAttribute" value="true">
</property>
<property name="outputActions" class="ptolemy.domains.fsm.kernel.OutputActionsAttribute" value="queue_out = queue_out + 2">
</property>
<property name="exitAngle" class="ptolemy.data.expr.Parameter" value="0.21083136556515109">
</property>
<property name="gamma" class="ptolemy.data.expr.Parameter" value="0.009761096271117788">
</property>
<property name="reset" class="ptolemy.data.expr.Parameter" value="false">
</property>
<property name="preemptive" class="ptolemy.data.expr.Parameter" value="false">
</property>
<property name="nondeterministic" class="ptolemy.data.expr.Parameter" value="false">
</property>
</relation>
<relation name="relation2" class="ptolemy.domains.fsm.kernel.Transition">
<property name="guardExpression" class="ptolemy.kernel.util.StringAttribute" value="queue_in > 0">
</property>
<property name="outputActions" class="ptolemy.domains.fsm.kernel.OutputActionsAttribute" value="queue_out = queue_out - 1">
</property>
<property name="exitAngle" class="ptolemy.data.expr.Parameter" value="0.23628591370860905">
</property>
<property name="gamma" class="ptolemy.data.expr.Parameter" value="-3.13067682051917">
</property>
<property name="reset" class="ptolemy.data.expr.Parameter" value="false">
</property>
<property name="preemptive" class="ptolemy.data.expr.Parameter" value="false">
</property>
<property name="nondeterministic" class="ptolemy.data.expr.Parameter" value="false">
</property>
</relation>
<relation name="relation3" class="ptolemy.domains.fsm.kernel.Transition">
<property name="guardExpression" class="ptolemy.kernel.util.StringAttribute" value="true">
</property>
<property name="outputActions" class="ptolemy.domains.fsm.kernel.OutputActionsAttribute" value="queue_out = 1">
</property>
<property name="exitAngle" class="ptolemy.data.expr.Parameter" value="0.6283185307179586">
</property>
<property name="gamma" class="ptolemy.data.expr.Parameter" value="-0.3452534141203151">
</property>
<property name="reset" class="ptolemy.data.expr.Parameter" value="false">
</property>
<property name="preemptive" class="ptolemy.data.expr.Parameter" value="false">
</property>
<property name="nondeterministic" class="ptolemy.data.expr.Parameter" value="false">
</property>
</relation>
<link port="Using.incomingPort" relation="relation2"/>
<link port="Using.outgoingPort" relation="relation"/>
<link port="Idle.incomingPort" relation="relation"/>
<link port="Idle.incomingPort" relation="relation3"/>
<link port="Idle.outgoingPort" relation="relation2"/>
<link port="init.outgoingPort" relation="relation3"/>
</entity>
<relation name="queue_inRelation" class="ptolemy.actor.TypedIORelation">
</relation>
<relation name="queue_outRelation" class="ptolemy.actor.TypedIORelation">
</relation>
<link port="queue_in" relation="queue_inRelation"/>
<link port="queue_out" relation="queue_outRelation"/>
<link port="_Controller.queue_in" relation="queue_inRelation"/>
<link port="_Controller.queue_out" relation="queue_outRelation"/>
</entity>
<entity name="Inside MIC" class="ptolemy.actor.lib.gui.Display">
<property name="columnsDisplayed" class="ptolemy.data.expr.Parameter" value="20">
</property>
<property name="title" class="ptolemy.kernel.util.StringAttribute" value="Inside MIC">
</property>
<property name="_windowProperties" class="ptolemy.actor.gui.WindowPropertiesAttribute" value="{bounds={286, 775, 152, 222}, maximized=false}">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[285.0, 155.0]">
</property>
</entity>
<relation name="relation2" class="ptolemy.actor.TypedIORelation">
</relation>
<relation name="relation3" class="ptolemy.actor.TypedIORelation">
<vertex name="vertex1" value="[235.0, 100.0]">
</vertex>
</relation>
<link port="q_out" relation="relation3"/>
<link port="q_in" relation="relation2"/>
<link port="ModalModel.queue_in" relation="relation2"/>
<link port="ModalModel.queue_out" relation="relation3"/>
<link port="Inside MIC.input" relation="relation3"/>
</entity>
<entity name="Queue" class="ptolemy.domains.de.lib.Queue">
<property name="QueueIcon" class="ptolemy.vergil.icon.EditorIcon">
<property name="_windowProperties" class="ptolemy.actor.gui.WindowPropertiesAttribute" value="{bounds = {104, 126, 815, 516}, maximized = false}">
</property>
<property name="_vergilSize" class="ptolemy.actor.gui.SizeAttribute" value="[600, 400]">
</property>
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[230.0, 140.0]">
</property>
<port name="input" class="ptolemy.actor.TypedIOPort">
<property name="input"/>
<property name="_type" class="ptolemy.actor.TypeAttribute" value="int">
</property>
</port>
<port name="output" class="ptolemy.actor.TypedIOPort">
<property name="output"/>
<property name="_type" class="ptolemy.actor.TypeAttribute" value="int">
</property>
</port>
</entity>
<entity name="Clock" class="ptolemy.actor.lib.Clock">
<doc>Create a set of pulses</doc>
<property name="_location" class="ptolemy.kernel.util.Location" value="[45.0, 215.0]">
</property>
</entity>
<entity name="TimedDelay" class="ptolemy.domains.de.lib.TimedDelay">
<property name="TimedDelayIcon" class="ptolemy.vergil.icon.EditorIcon">
<property name="_windowProperties" class="ptolemy.actor.gui.WindowPropertiesAttribute" value="{bounds={137, 109, 815, 518}, maximized=false}">
</property>
<property name="_vergilSize" class="ptolemy.actor.gui.SizeAttribute" value="[600, 400]">
</property>
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[55.0, 140.0]">
</property>
</entity>
<entity name="TopLevel" class="ptolemy.actor.lib.gui.Display">
<property name="columnsDisplayed" class="ptolemy.data.expr.Parameter" value="20">
</property>
<property name="title" class="ptolemy.kernel.util.StringAttribute" value="TopLevel">
</property>
<property name="_windowProperties" class="ptolemy.actor.gui.WindowPropertiesAttribute" value="{bounds={1056, 771, 152, 222}, maximized=false}">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[655.0, 80.0]">
</property>
</entity>
<entity name="SingleEvent" class="ptolemy.domains.de.lib.SingleEvent">
<property name="value" class="ptolemy.data.expr.Parameter" value="1">
</property>
<property name="SingleEventIcon" class="ptolemy.vergil.icon.EditorIcon">
<property name="_windowProperties" class="ptolemy.actor.gui.WindowPropertiesAttribute" value="{bounds={292, 266, 815, 518}, maximized=false}">
</property>
<property name="_vergilSize" class="ptolemy.actor.gui.SizeAttribute" value="[600, 400]">
</property>
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[130.0, 185.0]">
</property>
</entity>
<entity name="Commutator" class="ptolemy.actor.lib.Commutator">
<property name="CommutatorIcon" class="ptolemy.vergil.icon.EditorIcon">
<property name="_windowProperties" class="ptolemy.actor.gui.WindowPropertiesAttribute" value="{bounds = {46, 101, 815, 516}, maximized = false}">
</property>
<property name="_vergilSize" class="ptolemy.actor.gui.SizeAttribute" value="[600, 400]">
</property>
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[565.0, 140.0]">
</property>
</entity>
<entity name="Post-Queue" class="ptolemy.actor.lib.gui.Display">
<property name="columnsDisplayed" class="ptolemy.data.expr.Parameter" value="20">
</property>
<property name="title" class="ptolemy.kernel.util.StringAttribute" value="Post-Queue">
</property>
<property name="_windowProperties" class="ptolemy.actor.gui.WindowPropertiesAttribute" value="{bounds={2, 774, 152, 222}, maximized=false}">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[335.0, 205.0]">
</property>
</entity>
<entity name="Post MIC" class="ptolemy.actor.lib.gui.Display">
<property name="columnsDisplayed" class="ptolemy.data.expr.Parameter" value="20">
</property>
<property name="title" class="ptolemy.kernel.util.StringAttribute" value="Post MIC">
</property>
<property name="_windowProperties" class="ptolemy.actor.gui.WindowPropertiesAttribute" value="{bounds={903, 772, 152, 222}, maximized=false}">
</property>
<property name="_location" class="ptolemy.kernel.util.Location" value="[500.0, 205.0]">
</property>
</entity>
<relation name="relation" class="ptolemy.actor.TypedIORelation">
</relation>
<relation name="relation5" class="ptolemy.actor.TypedIORelation">
<vertex name="vertex1" value="[610.0, 80.0]">
</vertex>
</relation>
<relation name="relation4" class="ptolemy.actor.TypedIORelation">
<vertex name="vertex1" value="[185.0, 140.0]">
</vertex>
</relation>
<relation name="relation2" class="ptolemy.actor.TypedIORelation">
<vertex name="vertex1" value="[290.0, 140.0]">
</vertex>
</relation>
<relation name="relation6" class="ptolemy.actor.TypedIORelation">
<vertex name="vertex1" value="[455.0, 140.0]">
</vertex>
</relation>
<link port="MIC.q_out" relation="relation6"/>
<link port="MIC.q_in" relation="relation2"/>
<link port="Queue.input" relation="relation4"/>
<link port="Queue.output" relation="relation2"/>
<link port="Queue.trigger" relation="relation"/>
<link port="Clock.output" relation="relation"/>
<link port="TimedDelay.input" relation="relation5"/>
<link port="TimedDelay.output" relation="relation4"/>
<link port="TopLevel.input" relation="relation5"/>
<link port="SingleEvent.output" relation="relation4"/>
<link port="Commutator.input" relation="relation6"/>
<link port="Commutator.output" relation="relation5"/>
<link port="Post-Queue.input" relation="relation2"/>
<link port="Post MIC.input" relation="relation6"/>
</entity>
