The Comandos Distributed Application Platform

Cahill, Vinny; Balter, Roland; Harris, Neville R.; Pina, Xavier Rousset de

doi:10.1093/comjnl/37.6.477

Cited by 17 publications

(4 citation statements)

References 8 publications

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“…Using traditional object-oriented programming environments such as Arjuna [6] or Comandos [1 ], which do not feature a metalevel architecture, a programmer has to insert the necessary control statements, which indicate the beginning and the end of a transaction, manually as depicted on the left side of Fig. 1 (referred to as the traditionalparadigm in the remainder of this paper).…”

Section: Introductionmentioning

confidence: 99%

A note on before and after metamethods

Zimmermann

1997

SIGPLAN Not.

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With the advent of object-oriented metalevel architectures, a new programming paradigm in the shape of before and after metamethods has arrived. This paradigm allows the hidden execution of additional functionality that previously had to be inserted explicitly into the source code of a program. Typically, this was implemented as a pair of invocations to some initialisation and finalisation routines. This paper provides the formal proof that before and after metamethods have the same expressive power as the explicit invocation of functionality, resulting in the equivalence of both paradigms.

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Section: Introductionmentioning

confidence: 99%

A note on before and after metamethods

Zimmermann

1997

SIGPLAN Not.

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“…A number of different distributed computing platforms attempt to address these issues (to different extents) including DCE [21,22], CORBA (and OMA) [17,18], ANSAware [2] and COMANDOS [7]. Also, the standard under development, the ISO Reference Model of Open Distributed Processing (RM-ODP) [12], attempts to create a framework for interoperability of open distributed systems.…”

Section: Introductionmentioning

confidence: 99%

“…A large amount of research has been already carried out on a unifying type model supporting interoperability [5,6,7,9,12,15,16,19,20]. As this work approaches theproblemfromdifferent backgrounds, a unification of the models is still necessary.…”

Section: Introductionmentioning

confidence: 99%

Interoperability of Distributed Platforms: a Compatibility Perspective

Brookes

Indulska

Bond

et al. 1995

Open Distributed Processing

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Interoperability of heterogeneous distributed platforms is affected by differences in their type systems, including both differences in syntax and semantics of types and approaches to inclusion polymorphism. This paper examines the differences of well known distributed platforms (DCE, ANSAware, CORBA) as well as models for distributed and object oriented systems. The examination is illustrated by a scenario of their cooperation. The scenario is based on resolving differences during the federation process. The federation involves extension of persistent type repositories for each domain to incorporate mappings among domains. The scenario focuses on differences in compatibility relationships.

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“…[2,17]. In earlier work, we have developed a mathematical model for monitoring of real-time activities in distributed objectoriented systems [7].…”

Section: Monitoring Distributed Object-oriented Systemsmentioning

confidence: 99%

Monitoring distributed real-time activities in DCOM

Mock¹,

Gergeleit²,

Nett³

Proceedings Third IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC 2000) (Cat. No. PR0060

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Object-oriented frameworks have become a key element in the design of distributed systems. They make the existence of the physical and operating system level resources transparent to the designer and provide the abstract view of the distributed systems as a set of objects that interact by invoking well-defined interfaces of each other. Easy reuse of existing components, location transparency and implementation hiding are the main ingredients of such frameworks that simplify the task of designing distributed systems drastically. It is desirable to take advantage of these benefits when designing distributed real-time systems, too. However, this goal conflicts with the essential need to consider the allocation of system resources when real-time requirements must be met. Here, system level resource issues such as execution times on CPUs, thread switches, occurrence of interrupts, and message delays are of primary interest. Our approach to solve this dilemma is to allow and support the designer of distributed real-time objectoriented applications to become aware of system level resources. In this paper, we present a monitoring tool JewelDC that allows monitoring of distributed activities (i.e. nested sequences of object invocations) in a distributed object-oriented framework. Distributed activities are visualized at the abstract object level while simultaneously revealing their use of system level resources. The tool has been implemented for DCOM on Microsoft Windows NT 4.0.

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The Comandos Distributed Application Platform

Cited by 17 publications

References 8 publications

A note on before and after metamethods

A note on before and after metamethods

Interoperability of Distributed Platforms: a Compatibility Perspective

Monitoring distributed real-time activities in DCOM

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