Heterogeneous Environment: Ptolemy

• Ptolemy supports different design styles encapsulated in objects called Domain.

  • Domain realizes a computational model appropriate for a particular sub-system. Ex: SDF, Dynamic Dataflow(DDF), Discrete Event(DE) and Digital hardware modeling environment (Thor).

• Domain consists of a set of Blocks and Schedulers that confirm to a common computational model.

Block

Geodesic

Plasma

PortHole

Block

PortHole

PortHole

PortHole

Block:

• setup

• go()

• wrapup()

Geodesic

• initialize()

• numlnit()

• setSourcePort()

• setDestPort()

Particle

Particle

• readType()

• print()

• operator <<()

• clone()

PortHole

• initialize()

• receiveData()

• sendData()

Block objects send and receive

data encapsulated in particles to

outside world through PortHoles.

Buffering: by Geodesic

Garbage Collection: Plasma

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