Object-oriented languages are now recognized as powerful tools for building large and complex applications. In particular, two central aspects of the object paradigm are encapsulation and inheritance; these provide a sound basis for creating software that is easy to maintain and reuse.

This paper presents a metrics-driven process and software toolset for the engineering of concurrent, object-oriented, real-time systems. In the engineering of real-time systems, the objective need not be to exploit all potential concurrency, but to exploit only as much concurrency as is needed to enable satisfaction of timing constraints. Thus, the systems engineering process presented in the paper utilizes inter-object concurrency selectively, as a means to meet timelines. To support the selective use of concurrency, this paper describes techniques for computing inter-object concurrency metrics. It is also shown how the concurrency metrics are used to guide the mapping of objects onto processors.

Dynamic memory management in real-time systems is difficult because most traditional allocation and deallocation algorithms are unpredictable in terms of their worst-case memory utilization and execution times. This paper describes recent work on a new memory management system designed specifically to support hard-real-time allocation, automatic garbage collection, and defragmentation of the free pool. The memory management system consists of special hardware circuits placed between the CPU's level-two caches and its memory subsystem. Benefits include worst-case allocation delays of two microseconds and typical memory utilizations that exceed binary-buddy allocators by over 30%. A commercial implementation of this technology is currently under development.

Real Time Talk is a framework and an object-oriented language for distributed hard real-time systems. This paper presents past, present, and future work in the Real Time Talk project. It concentrates on the language and programming part of Real Time Talk, and the problems a dynamically typed language impose on a real-time system.We look at how some of these problems can be solved by type inference and how type information can assist the compiler in accepting larger classes of real-time programs, generate more efficient and deterministic code, provide better estimation of execution times, and avoid run-time type errors. With type inference, one can have the best of two worlds --- efficiency and type safety, without the need for manual type declarations. An example is used to illustrate these ideas.

There are many benefits claimed for the use of object-oriented software development methods, and in particular object-oriented analysis methods for software development. The benefits which are cited typically include.a. An understandable and maintainable system structure.b. Clean partitioning which allows the system to evolve as technology changes.c. Enhanced potential for reuse of components.

article Free Access Share on Workshop on object-oriented legacy systems and software evolution Authors: Antero Taivalsaari Nokia Research Center, P.O. Box 45, 00211 Helsinki, Finland Nokia Research Center, P.O. Box 45, 00211 Helsinki, FinlandView Profile , Roland Trauter Daimler-Benz Research Center, Wilhelm-Runge Strasse 11, 89081 Ulm, Germany Daimler-Benz Research Center, Wilhelm-Runge Strasse 11, 89081 Ulm, GermanyView Profile , Eduardo Casais Forschungszentrum Informatik, Haid-und-Neu-Strasse 10-14, 76131 Karlsruhe, Germany Forschungszentrum Informatik, Haid-und-Neu-Strasse 10-14, 76131 Karlsruhe, GermanyView Profile Authors Info & Claims ACM SIGPLAN OOPS MessengerVolume 6Issue 4Oct 1, 1995 pp 180–185https://doi.org/10.1145/260111.260276Online:01 October 1995Publication History 1citation319DownloadsMetricsTotal Citations1Total Downloads319Last 12 Months4Last 6 weeks2 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF

article Free Access Share on Are object-oriented CASE frameworks ready for prime time? Authors: K. Narayanaswamy Cs3: Computing Services Support Solutions Cs3: Computing Services Support SolutionsView Profile , Adrian Blakey Sybase SybaseView Profile Authors Info & Claims ACM SIGPLAN OOPS MessengerVolume 6Issue 4Oct 1, 1995 pp 155–158https://doi.org/10.1145/260111.260271Published:01 October 1995Publication History 0citation164DownloadsMetricsTotal Citations0Total Downloads164Last 12 Months3Last 6 weeks1 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my Alerts New Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF

article Free Access Share on Patterns (Panel): cult to culture? Authors: Steven Fraser Bell Northern Research Bell Northern ResearchView Profile , Honna Segel Bell Northern Research Bell Northern ResearchView Profile , Grady Booch Rational RationalView Profile , Frank Buschmann Siemens SiemensView Profile , Jim Coplien AT&T AT&TView Profile , Norm Kerth Elite Systems Elite SystemsView Profile , Ivar Jacobson Objectory ObjectoryView Profile , Mary Beth Rosson Virginia PolyTechnic Institute & State University Virginia PolyTechnic Institute & State UniversityView Profile Authors Info & Claims ACM SIGPLAN OOPS MessengerVolume 6Issue 4Oct 1, 1995 pp 85–88https://doi.org/10.1145/260111.260250Online:01 October 1995Publication History 0citation400DownloadsMetricsTotal Citations0Total Downloads400Last 12 Months2Last 6 weeks0 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF

The Software Engineering processes usually lack formal mathematical foundations. This paper presents a formal approach for the development of Specifications, Data Flow Diagrams and Object Oriented Diagrams using algebraic theory. The use of algebraic theory allows the check for completeness and consistency and the generation of automatic procedures for translating specifications into Data Flow Diagrams or Object Oriented Diagrams.

Yielding the "best" possible performance from a given design may impact an application's viability. In a competitive software application market, performance analysis using benchmarks may set one vendor ahead of the others. In "real-time" systems, performance optimizations may be critical to achieving "deadlines", points in time in which processing must be completed. Even in computer systems that do not fall into either category, a faster system is often preferable to a slower one.