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    FT-SR: A programming language for constructing fault-tolerant distributed systems.

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    Author
    Thomas, Vicraj Timothy
    Issue Date
    1993
    Keywords
    Dissertations, Academic.
    Computer science.
    Committee Chair
    Schlichting, Richard
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    This dissertation focuses on the area of improving programming language support for constructing fault-tolerant systems. Specifically, the design and implementation of FT-SR, a programming language developed for building a wide variety of fault-tolerant systems, is described. FT-SR is based on the concurrent programming language SR and is designed as a set of extensions to SR. A distinguishing feature of FT-SR is the flexibility it provides the programmer in structuring fault-tolerant software. It is flexible enough to be used for structuring systems according to any of the standard fault-tolerance structuring paradigms that have been developed for such systems, including the object/action model, the restartable action paradigm, and the state machine approach. This is especially important in systems building because different structuring paradigms are often appropriate for different parts of the system. This flexibility sets FT-SR apart from other fault-tolerant programming languages which provide language support for the one paradigm that is best suited for the class of applications they choose to support. FT-SR, on the other hand, is suitable for programming a variety of systems and applications. FT-SR derives its flexibility from a programming model based on fail-stop atomic objects. These objects execute operations as atomic actions except when a failure or series of failures cause underlying implementation assumptions to be violated; in this case, notification is provided. This dissertation argues that fail-stop atomic objects are the fundamental building blocks for all fault-tolerant programs. FT-SR provides the programmer with simple fail-stop atomic objects, and mechanisms that allow these fail-stop atomic objects to be composed to form higher-level fail-stop atomic objects that can tolerate a greater number of faults. The mechanisms for composing fail-stop atomic objects are based on standard redundancy techniques. This ability to combine the basic building blocks in a variety of ways allows programmers to structure their programs in a manner best suited to the application at hand. FT-SR has been implemented using version 3.1 of the x-kernel and runs standalone on Sun 3s. The implementation is interesting because of the novel algorithms and optimizations used within the language runtime system.
    Type
    text
    Dissertation-Reproduction (electronic)
    Degree Name
    Ph.D.
    Degree Level
    doctoral
    Degree Program
    Computer Science
    Graduate College
    Degree Grantor
    University of Arizona
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    Dissertations

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