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

By Kurt Jensen, Lars M. Kristensen

Coloured Petri Nets (CPN) is a graphical language for modelling and validating concurrent and dispensed structures, and different structures during which concurrency performs an incredible position. the improvement of such platforms is especially hard due to inherent intricacies like attainable nondeterminism and the significant variety of attainable execution sequences.

In this textbook Jensen and Kristensen introduce the constructs of the CPN modelling language and current the similar research tools intimately. additionally they offer a complete street map for the sensible use of CPN through showcasing chosen business case experiences that illustrate the sensible use of CPN modelling and validation for layout, specification, simulation, verification and implementation in numerous software domains.

Their presentation essentially goals at readers attracted to the sensible use of CPN. therefore all options and constructs are first informally brought via examples after which by means of formal definitions (which can be skipped). The publication is preferably compatible for a one-semester path at a complicated undergraduate or graduate point, and during its powerful program examples may also serve for self-study. An accompanying web site bargains extra fabric comparable to slides, workouts and undertaking proposals.

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

Example text

Data (of colour set DATA) denotes the data that has already been received. It will be bound to the colour of the token on the place DataReceived. When a data packet is present at place B there are two different possibilities. Either n=k evaluates to true, which means that the data packet being received is the one that the receiver expects, or n=k evaluates to false which means that it 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 (n,d) B NOxDATA data n 1`1 1`1 NextSend 1 1`1 1`1 NO k k NO 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 Transmit Ack n Fig.

CPN ML embeds the Standard ML language and extends it with constructs for defining colour sets and declaring variables. The CPN ML programming environment extends the Standard ML environment with the concepts of multisets and functions for manipulation of multisets. There exist several implementations and programming environments for Standard ML. CPN Tools uses the SML/NJ implementation [2]. The Standard ML language plays a major role in the CPN modelling language and the CPN Tools implementation.

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). • The token colour on the place NextRec does not change, which means that the receiver is waiting for the same data packet as before. • An acknowledgement is put on place C. The acknowledgement contains the sequence number of the data packet that the receiver is expecting next.

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