PTOLEMY II - CiteSeerX

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domains.fsm diva java.awt javax.swing actor.gui gui moml vergil MoMLViewerApplet TypeAnimatorApplet VergilApplication VergilErrorHandler vergil.icon AttributeValueIcon BoxedValueIcon BoxedValuesIcon CopyCatIcon DynamicEditorIcon EditIconFrame EditIconGraphController EditIconTableau EditorIcon ImageIcon ResizableAttributeControllerFactory ShapeIcon SVGIcon TextIcon UpdatedValueIcon ValueIcon XMLIcon vergil.tree EntityTreeModel FullTreeModel PTree PtolemyTreeCellRenderer TreeEditor TreeEditorPanel TreeTableau VisibleTreeModel vergil.debugger DebugController DebugProfile BreakpointDialogFactory BreakpointConfigurer BreakpointConfigurerDialog vergil.toolbox AnnotationEditorFactory AttributeBoundsManipulator ConfigureAction EditIconAction FigureAction FileEditorTableauFactory GraphicElement MenuActionFactory MenuItemFactory PortSite PtolemyListCellRenderer PtolemyMenuFactory PtolemyTransferable RemoveIconAction SnapConstraint TextEditorConfigureFactory TextEditorFactory TextEditorForStringAttributes TextEditorTableauFactory VisibleParameterEditorFactory vergil.fsm Arc FSMGraphController FSMGraphFrame FSMGraphModel FSMGraphTableau FSMViewerGraphController StateController TransitionController vergil.fsm.ia InterfaceAutomatonGraphController InterfaceAutomatonGraphFrame InterfaceAutomatonGraphTableau vergil.fsm.modal HierarchicalStateController HierarchicalStateControllerFactory ModalTableauFactory ModalTransitionController FIGURE 1.20. Packages in Ptolemy II provide the Vergil visual editor. AbstractBasicGraphModel BasicGraphController BasicGraphFrame EditorDropTarget ExtendedGraphFrame IconController LocatableNodeController LocatableNodeDragInteractor NamedObjController NamedObjNodeModel NodeControllerFactory ParameterizedNodeController PopupMouseFilter RunnableGraphController WithIconGraphController vergil.actor vergil.kernel AnimationRenderer AttributeController AttributeNodeModel CompositePtolemyModel DebugRenderer Link PortDialogFactory RelationController RenameDialogFactory VergilUtilities vergil.basic ActorController ActorEditorGraphController ActorGraphFrame ActorGraphModel ActorGraphTableau ActorInstanceController ActorViewerGraphController ClassDefinitionController ExternalIOPortController IOPortController LinkController Introduction 36 Ptolemy II
Introduction cient, scalable, and understandable. Actor-Oriented Classes, Subclasses, and Inheritance. Classes are the key modularity mechanism of object-oriented design. While actor-oriented frameworks have long leveraged this object-oriented mechanism (see [22]for example), they have largely stopped short of defining comparable modularity mechanisms that operate at the level of actor composition. Ptolemy II does this, and in a sufficiently general way to be applicable across a large suite of models of computation. A truly polymorphic type system. Ptolemy Classic supported rudimentary polymorphism through the “anytype” particle. Even with such limited polymorphism, type resolution proved challenging, and the implementation is ad-hoc and fragile. Ptolemy II has a more modern type system based on a partial order of types and monotonic type refinement functions associated with functional blocks. Type resolution consists of finding a fixed point, using algorithms inspired by the type system in ML [104]. The type system is described in [139] and [140]. Domain-polymorphic actors. In Ptolemy Classic, actor libraries were separated by domain. Through the notion of subdomains, actors could operate in more than one domain. In Ptolemy II, this idea is taken much further. Actors with intrinsically polymorphic functionality can be written to operate in a much larger set of domains. The mechanism they use to communicate with other actors depends on the domain in which they are used. This is managed through a concept that we call a behavioral type system [74]. Extensible XML-based file formats. XML is an established standard for representation of information that focuses on the logical relationships between pieces of information. Human-readable representations are generated with the help of style sheets. Ptolemy II uses XML as its primary format for persistent design data. Better modularization through the use of packages. Ptolemy II is divided into packages that can be used independently and distributed on the net, or drawn on demand from a server. This breaks with tradition in design software, where tools are usually embedded in huge integrated systems with interdependent parts. Branded, Packaged Configurations. Ptolemy II offers the ability to create separately branded, packages that pull in as much or as little of the infrastructure as is appropriate. Two examples are HyVisual [25] for hybrid systems modeling and VisualSense [11] for wireless and sensor network modeling. These “configurations” can have customized libraries of actors and directors, customized editors, and customized on-line documentation. A “configuration” is defined by a Ptolemy II model, so creating one is relatively easy. Complete separation of the abstract syntax from the semantics. Ptolemy designs are structured as clustered graphs. Ptolemy II defines a clean and thorough abstract syntax for such clustered graphs, and separates into distinct packages the infrastructure supporting such graphs from mechanisms that attach semantics (such as dataflow, analog circuits, finite-state machines, etc.) to the graphs. Improved heterogeneity via a well-defined abstract semantics. Ptolemy Classic provided a wormhole mechanism for hierarchically coupling heterogeneous models of computation. This mechanism is improved in Ptolemy II through the use of opaque composite actors, which provide better support for models of computation that are very different from dataflow, the best supported model in Ptolemy Classic. These include hierarchical concurrent finite-state machines and continuoustime modeling techniques. Thread-safe concurrent execution. Ptolemy models are typically concurrent, but in the past, support for concurrent execution of a Ptolemy model has been primitive. Ptolemy II supports concur- Heterogeneous Concurrent Modeling and Design 37
Page 1 and 2: PTOLEMY II HETEROGENEOUS CONCURRENT
Page 3 and 4: VOLUME 1 INTRODUCTION TO PTOLEMY II
Page 5 and 6: Volume 1 Contents Introduction to P
Page 7 and 8: 2.10.3. Constructing Modal Models 8
Page 9 and 10: 7. MoML 191 7.1. Introduction 191 7
Page 11 and 12: 1 Introduction Author: Edward A. Le
Page 13 and 14: Introduction heterochronous dataflo
Page 15 and 16: Introduction A major emphasis in Pt
Page 17 and 18: Introduction determine when actors
Page 19 and 20: Introduction provides levels of vis
Page 21 and 22: Introduction is a guard, and the se
Page 23 and 24: Introduction well. All of these are
Page 25 and 26: Introduction clients to update thei
Page 27 and 28: Introduction will be supplied with
Page 29 and 30: Introduction 1.3.12 Synchronous Dat
Page 31 and 32: Introduction FIGURE 1.10. Refinemen
Page 33 and 34: Introduction occlusions due to terr
Page 35 and 36: Introduction tion. The overall arch
Page 37 and 38: Introduction kernel.attributes This
Page 39 and 40: Introduction 1.5.2 Overview of Key
Page 41 and 42: Introduction Actor interfaces are k
Page 43 and 44: Heterogeneous Concurrent Modeling a
Page 45: Introduction actor actor.gui data.e
Page 49 and 50: Introduction 1.5.8 Future Capabilit
Page 51 and 52: Introduction Appendix A: UML — Un
Page 53 and 54: Introduction grams, the only constr
Page 55 and 56: 2 Using Vergil Authors: Edward A. L
Page 57 and 58: Using Vergil 2.2.2 Executing a Pre-
Page 59 and 60: Using Vergil The Lorenz attractor m
Page 61 and 62: Using Vergil The Continuous-Time (C
Page 63 and 64: Using Vergil box in figure 2.11. En
Page 65 and 66: Using Vergil Don’t panic! Excepti
Page 67 and 68: Using Vergil tions are a normal par
Page 69 and 70: Using Vergil 2.4 Hierarchy Ptolemy
Page 71 and 72: Using Vergil Then using these ports
Page 73 and 74: Using Vergil the default 0.1 to 0.0
Page 75 and 76: Using Vergil pan window, it is easy
Page 77 and 78: Using Vergil FIGURE 2.33. The pan w
Page 79 and 80: Using Vergil we have modified the c
Page 81 and 82: Using Vergil model, simply copy (or
Page 83 and 84: Using Vergil A key issue is to deci
Page 85 and 86: Using Vergil instances. This proble
Page 87 and 88: Using Vergil quick tour for more de
Page 89 and 90: Using Vergil uses the index in the
Page 91 and 92: Using Vergil AddSubtract actor, and
Page 93 and 94: Using Vergil If you look inside the
Page 95 and 96: Using Vergil If you look inside the
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Using Vergil transition (or right c
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Using Vergil Once you have created
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Using Vergil The grid is turned off
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Authors: Edward A. Lee Xiaojun Liu
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Expressions classes to create a gen
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Expressions The % operation is a mo
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Expressions attribute, which includ
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Expressions 3.3.5 State Machines Ex
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Expressions whose value is an array
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Expressions from it. For instance,
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Expressions defined. For example, >
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Expressions length is given by the
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Expressions Thus, for example, you
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Expressions number. With one additi
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Expressions value. For example, fix
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Expressions In the example in figur
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Expressions A.2 Basic Mathematical
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Expressions A.3 Matrix, Array, and
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Expressions A.5 Signal Processing F
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Expressions TABLE 8: Functions perf
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4 Actor Libraries Authors: Elaine C
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Actor Libraries properly in the CT
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Actor Libraries ing that multiple c
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Actor Libraries TypedAtomicActor «
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Actor Libraries SequenceScope (exte
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Actor Libraries UnsignedByteArrayTo
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Actor Libraries MobileFunction (ext
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Actor Libraries LogicFunction (exte
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Actor Libraries Sleep (extends Tran
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Actor Libraries VariableFIR (extend
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Actor Libraries Integrator: Integra
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Actor Libraries Figure 4.4 shows th
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5 Designing Actors Authors: Christo
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Designing Actors /** Javadoc commen
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Designing Actors although with most
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Designing Actors import ptolemy.act
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Designing Actors makes such actors
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Designing Actors same parameter val
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Designing Actors morphic actor comp
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Designing Actors To get data polymo
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Designing Actors public class Seque
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Designing Actors be used in domains
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Designing Actors alComm actor. Beca
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Designing Actors attribute has valu
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Designing Actors import ptolemy.act
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6 Coding Style Authors: Christopher
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Coding Style /* One line descriptio
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Coding Style Copyright (c) 2004 The
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Coding Style @version $Id: NamedObj
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Coding Style } We use instead the i
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Coding Style * @exception MyExcepti
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Coding Style + "it does not impleme
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Authors: Edward A. Lee Steve Neuend
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MoML cutes it forever, until you hi
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MoML A second difference between ou
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MoML
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MoML 7.3.3 Names and Classes Most M
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MoML Here, the element named
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MoML implement. 7.3.7 Doc Element S
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MoML It is also sometimes necess
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MoML then there will be a link t
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MoML found. For example, if the cla
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MoML it cannot collide with the nam
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MoML The rendering of the icon is d
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MoML 7.4.5 Deleting Entities, Relat
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MoML This unlinks a port from the s
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MoML model. The EntityLibrary class
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MoML Suppose that using incremental
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MoML Generate a sine wave.
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MoML
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MoML Number of iterations in
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MoML -P- The f
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MoML -P- The phase,
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8 Custom Applets Authors: Edward A.
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Custom Applets html code, see the J
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Custom Applets public class Tutoria
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Custom Applets then the result of
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Custom Applets 8.3.5 Using Model Pa
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Custom Applets ptolemy/domains/doma
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References [1] G. Agha, Actors: A M
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[33] S. A. Edwards, “The Specific
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[67] E. Kohler, The Click Modular R
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[95] J. Liu, X. Liu, T. J. Koo, B.
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[132]W. R. Sutherland, "The on-Line
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Glossary abstract syntax ..........
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Ptolemy II ........................
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Index Symbols - in UML 41 # in UML
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coin flips 142 Color class 173 colo
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entity in XML 198 EntityLibrary cla
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Director class 159 inverse FFT 124
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CompositeEntity class 206 nextPower
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safety 34 SampleDelay actor 78, 138
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type constraint 155 type constraint
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