Introduction to Real-time Software Design

Zusatztext

In 1977 I was asked to prepare aseries of twenty lectures introducing the design of real-time software to undergraduate electrical engineers at the University of Essex. At that time the advent of low-cost microprocessors was causing a minor revolution in the computer industry. The decreasing cost of hardware resulted in a mushrooming of the number of real-time applications being attempted. Many of these innovations were conducted by electrical engineers with little software background, or by computer scientists familiar only with large software systems. Even now future engineers still in training will have only a limited exposure to software because of the pressure of other subjects in their curricula. It was clear that a concise set of lectures, directed at people with limited exposure to software design was needed. In order to find a suitable text I turned to the existing computer science literature. I discovered that the available material was scattered over a large number of reports and articles and varied widely in level of complexity.

Autorenportrait

Inhaltsangabe1. Introduction.- 1.1 What are Real-time systems?.- 1.2 Software Costs.- 1.3 Virtual Machines.- 1.4 Summary.- I The Real-Time Virtual Machine.- 2. The Real-time Virtual Machine-Its Properties.- 2.1 Processes.- 2.2 Communication.- 2.3 Synchronisation.- 2.4 Example.- 2.5 Summary.- 3. Implementing the Real-time Machine.- 3.1 Implementing Processes-Dedicated Resources.- 3.2 Implementing Processes-Shared Resources.- 3.3 Implementing Synchronisation.- 3.4 Implementing Communication.- 3.5 Monitors.- 3.6 Executive Processes.- 3.7 Building the System.- 3.8 Example.- 3.9 Summary.- 4. Scheduling.- 4.1 Interrupt Level.- 4.2 Clock Level.- 4.3 Base Level.- 4.4 Resource Sharing and Deadlock.- 4.5 Example.- 4.6 Summary.- 5. Reliability.- 5.1 Testing.- 5.2 Fault Tolerance.- 5.3 Fault Detection.- 5.4 Fault Recovery.- 5.5 Recovery Levels.- 5.6 Recovery Priority.- 5.7 Example.- 5.8 Summary.- II Designing The Processes.- 6. Design Methodology.- 6.1 Correspondence.- 6.2 Simplicity.- 6.3 Summary.- 7. The Process Virtual Machine.- 7.1 The High-level Language Machine.- 7.2 The Interpreting Machine.- 7.3 The Finite State Machine.- 7.4 Summary.- III Measuring The System.- 8. Performance Measurement.- 8.1 Modelling Techniques.- 8.2 Hardware-assessment Models.- 8.3 Monitoring Techniques.- 8.4 Summary.- 9. Current trends.- References and Selected Bibliography.

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