Kurt Jensen, Lars M. Kristensen's Coloured Petri Nets: Modelling and Validation of Concurrent PDF

By Kurt Jensen, Lars M. Kristensen

Coloured Petri Nets (CPN) is a graphical language for modelling and validating concurrent and dispensed platforms, and different structures within which concurrency performs an enormous function. the advance of such structures is especially difficult due to inherent intricacies like attainable nondeterminism and the large variety of attainable execution sequences.

In this textbook Jensen and Kristensen introduce the constructs of the CPN modelling language and current the comparable research tools intimately. additionally they offer a finished street map for the sensible use of CPN by means of showcasing chosen commercial case reports that illustrate the sensible use of CPN modelling and validation for layout, specification, simulation, verification and implementation in numerous program domains.

Their presentation basically goals at readers attracted to the sensible use of CPN. therefore all ideas and constructs are first informally brought via examples after which via formal definitions (which might be skipped). The booklet is preferably appropriate for a one-semester path at a sophisticated undergraduate or graduate point, and during its robust software examples may also serve for self-study. An accompanying web site deals extra fabric corresponding to slides, workouts and venture proposals.

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Additional resources for Coloured Petri Nets: Modelling and Validation of Concurrent Systems

Sample text

An acknowledgement is put on place C. The acknowledgement contains the sequence number of the data packet that the receiver is expecting next. 14 shows the result of an occurrence of the transition ReceivePacket in the marking M2+ shown in Fig. 12. This occurrence of ReceivePacket corresponds to the reception of the expected data packet. , n=k), the following happens: • The data packet is removed from place B. • The data in the data packet is ignored (the marking of DataReceived does not change).

11 Marking M1 reached when SendPacket occurs in M0 1`(1,"COL")++ 1`(2,"OUR")++ 1`(3,"ED ")++ 1`(4,"PET")++ 1`(5,"RI ")++ 1`(6,"NET") AllPackets Packets To Send 6 NOxDATA 1`"" 1`"" 1 Data Received DATA (n,d) (n,d) Send Packet (n,d) A Transmit Packet if success then 1`(n,d) else empty NOxDATA 1`(1,"COL") 1 (n,d) B NOxDATA data n 1`1 1`1 NextSend 1 1`1 1`1 NO k k if n=k then k+1 else k n Receive Ack n D NO if success then 1`n else empty Receive Packet 1 NextRec NO Transmit Ack n if n=k then data^d else data if n=k then k+1 else k C NO Fig.

A mark- 36 2 Non-hierarchical Coloured Petri Nets 1`"" 1`"COL" 2 1 Data Received 1`(1,"COL")++ 1`(2,"OUR") B DATA (n,d) (n,d) NOxDATA data k Discard Packet 1`1 1 k k Receive Next NextRec k+1 NO [n<>k] data^d 1`2 [n=k] C k+1 NO Fig. 19 Marking illustrating the semantics of guards ing that is reachable via an occurrence sequence starting from the initial marking is called a reachable marking. The existence of a reachable marking with more than one enabled binding element makes a CPN model non-deterministic.

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