ANDRÉ , Charles

The Clock Constraint Specification Language (CCSL) has been informally introduced in the specifications of the UML Profile for Modeling and Analysis of Real-Time and Embedded systems (MARTE). In a previous report entitled ``Syntax and Semantics of the Clock Constraint Specification Language'', we equipped a kernel of CCSL with an operational...

The UML Profile for Modeling and Analysis of Real-Time and Embedded (MARTE) systems has recently been adopted by the OMG. Its Time Model extends the informal and simplistic Simple Time package proposed by UML2 and offers a broad range of capabilities required to model real-time systems. The MARTE OMG specification introduces a Time Structure...

Le profil UML MARTE a été créé pour la modélisation et l'analyse des systèmes temps réel embarqués. A ce titre, il permet d'annoter des modèles UML avec des paramètres temporels (durée, période, échéance, etc.). MARTE va bien au-delà de la simple annotation. Il définit un modèle de temps et de contraintes temporelles qui traite à la fois du...

UML goal of being a general-purpose modeling language discards the possibility to adopt too precise and strict a semantics. Users are to refine or define the semantics in their domain specific profiles. In the UML Profile for Modeling and Analysis of Real-Time and Embedded systems, we have defined a broadly expressive Time Model to provide a...

The UML Profile for Modeling and Analysis of Real-Time and Embedded (RTE) systems has recently been adopted by the OMG. Its Time Model extends the informal and simplistic Simple Time package proposed by UML2 and others a broad range of capabilities required to model RTE systems including both discrete/dense and chronometric/logical time. MARTE...

UML goal of being a general-purpose modeling language discards the possibility to adopt too precise and strict a semantics. Users are to refine or define the semantics in their domain specific profiles. In the UML Profile for Modeling and Analysis of Real-Time and Embedded systems, we have defined a broadly expressive Time Model to provide a...

La modélisation des systèmes répartis et des systèmes électroniques modernes nécessite des référentiels temporels multiples. Nous désignons ces systèmes sous le nom de "systèmes polychrones". Le profil UML pour les systèmes temps réel et embarqués (MARTE) permet leur modélisation ainsi que la spécification de contraintes temporelles avec CCSL...

The UML Profile for Modeling and Analysis of Real-Time and Embedded (RTE) systems has recently been adopted by the OMG. Its Time Model extends the informal and simplistic Simple Time package proposed by UML2 and offers a broad range of capabilities required to model RTE systems including both discrete/dense and chronometric/logical time. MARTE...

UML est un langage de modélisation largement utilisé mais qui offre peu de possibilités pour représenter des aspects liés au temps. Le profil UML Marte (Modeling and Analysis of Real-Time and Embedded systems) pallie cette insuffisance. Il offre la possibilité de modéliser du temps physique aussi bien que du temps logique. Un langage de...

The UML Profile for Modeling and Analysis of Real-Time and Embedded (RTE) systems has recently been adopted by the OMG. Its Time Model extends the informal and simplistic Simple Time package proposed by UML2 and offers a broad range of capabilities required to model RTE systems including both discrete/dense and chronometric/logical time. MARTE...

Construire un profil UML peut s'avérer fastidieux et sujet à erreurs. La nécessité de commencer par un modèle métier, indépendant d'une technologie d'implantation, est généralement reconnue. Malgré tout, l'adéquation de l'implantation doit être vérifiée. Nous proposons un procédé automatique pour transformer le modèle métier en un profil UML....

Model-Driven Engineering intensively uses models and model transformations. Transformation tools ensure that the target model conforms to the target metamodel, so that it is syntactically correct. However, there is few assistance, or none at all, to guarantee that the semantics is preserved during the transformation. This is mainly due to the...

AADL and MARTE are two modeling formalisms supporting the analysis of real-time embedded systems. Since both cover similar aspects, a clear assessment of their respective strength and weakness is required. Building on previous works, we focus here on the time aspects of the two specifications. Relying on the MARTE Time Model and the operational...

Abstract--Logical time has proved very useful to model heterogeneous and concurrent systems at various abstraction levels. The Clock Constraint Specification Language (CCSL) uses logical clocks as first-class citizens and supports a set of (logical) time patterns to specify the time behavior of systems. We promote here the use of CCSL to...

The Clock Constraint Specification Language (CCSL) has been informally introduced in the specifications of the \uml Profile for Modeling and Analysis of Real-Time and Embedded systems (MARTE). In a previous report entitled ``Syntax and Semantics of the Clock Constraint Specification Language'', we equipped a kernel of CCSL with an operational...

Building a UML profile is tedious and error-prone. There is no precise methodology to guide the process. Best practices recommend gathering concepts in a technology-independent domain view before implementation. Still, the adequacy of the implementation should be verified. This paper proposes to transform automatically a domain model into a...

The emerging OMG UML Profile for Modeling and Analysis of Real-Time Embedded systems (MARTE) aims, amongst other things, at providing a referential Time Model subprofile where semantic issues can be explicitly and formally described. As a full-size exercise we deal here with the modeling of immediate and delayed data communications in AADL....

The forthcoming OMG UML Profile for Modeling and Analysis of Real-Time Embedded systems (MARTE) aims, amongst other things, at providing a referential Time Model subprofile where semantic issues can be explicitly and formally described. As a full-size exercise we deal here with the modeling of immediate and delayed data communications in AADL....

This article introduces the Time Model subprofile of MARTE, a new OMG UML Profile dedicated to Modeling and Analysis of Real-Time and Embedded systems. After a brief presentation of former time modeling elements present in SPT and UML2, we introduce the Time meta-model of MARTE. It defines physical and logical time, timed model elements and...

MARTE/CCSL specifications express chronological and causal relations on UML models. In a previous work, we proposed a mechanism to verify Esterel implementations against MARTE/CCSL specifications. The mechanism was thought to be general enough to be extended to other languages. However, preserving the polychronous semantics of CCSL was pretty...

Time and timing features are an important aspect of modern electronic systems, often of embedded nature. We argue here that in early design phases, time is often of logical (rather than physical) nature, even possibly multiform. The compilation/synthesis of heterogeneous applications onto architecture platforms then largely amounts to adjusting...

Each domain has its own interpretation of time. We propose to extend UML, which is more and more used in the domain of real-time embedded applications, with a concept of time inherited from reactive system modeling : multiform time. After a brief review of some UML profiles, we present our extensions and we illustrate on an example from the...