Real-Time UML: Developing Efficient Objects for Embedded Systems (2nd Edition)
"Real-Time UML, Second Edition,uniquely ties together the principal UML capabilities as they can apply to embedded, real-time systems. Real-time systems development is difficult; this book will help guide developers through some of the minefields." --Doug Locke, Lockheed Martin Corporation The increasing complexity of embedded and real-time systems requires a more premeditated and sophisticated design approach for successful implementation. The object-based Unified Modeling Language (UML) can describe the structural and behavioral aspects critical to real-time systems, and has come to the fore as an outstanding medium for effective design. Like its best-selling predecessor, Real-Time UML, Second Edition, provides an overview of the essentials of real-time systems and an introduction to UML that focuses on its use in design and development. The book examines requirements analysis, the definition of object structure and object behavior, architectural design, mechanistic design, and more detailed designs that encompass data structure, operations, and exceptions. Numerous figures help illustrate UML design techniques, and detailed, real-world examples show the application of those techniques to embedded systems. This edition features version 1.3 of the UML standard and includes extensive coverage of the action semantics metamodel and statecharts, as well as further descriptions and demonstrations of how to effectively apply use cases and capture object models and state behavior. Real-Time UML, Second Edition, also introduces an elaboration of the author's proven product development process, Rapid Object-Oriented Process for Embedded Systems (ROPES), and a new appendix on the UML extension process. Key topic coverage includes: *Specifying external events *Identifying use cases *Response time *Concurrent collaboration diagrams *Key strategies for object-identification *Defining object state behavior *UML state diagrams *Orthogonal components and concurrency *Implementing state machines *Representing physical architecture in UML *Safety and reliability patterns *Concurrent state diagrams *Assigning priorities *State behavior patterns 0201657848B04062001
Why Read This Book
You will learn how to apply UML pragmatically to the special demands of embedded, real-time systems so your designs handle concurrency, timing, and resource constraints. The book marries object-oriented modeling with real-time engineering practices, giving you templates, patterns, and examples you can reuse in firmware and system architecture work.
Who Will Benefit
Embedded and firmware engineers or architects with some object-oriented experience who need to design, document, or communicate real-time systems and predictable embedded software.
Level: Intermediate — Prerequisites: Familiarity with basic embedded-systems concepts (interrupts, scheduling, I/O), working knowledge of a systems programming language (C/C++/Ada), and some exposure to object-oriented design; no deep UML expertise required.
Key Takeaways
- Model real-time requirements and use cases with UML so you can derive robust architectures from requirements.
- Design and analyze concurrent, time‑constrained objects and state machines that map cleanly to RTOS or bare-metal implementations.
- Apply real-time patterns and frameworks to common embedded problems (resource protection, schedulability, timing analysis).
- Translate UML models into implementable artifacts for C/C++/Ada-based firmware, improving traceability and design clarity.
- Evaluate and integrate UML tools and practices in an embedded development workflow to reduce design errors and improve documentation.
Topics Covered
- 1. Introduction: Real-Time Systems and Modeling
- 2. Overview of UML for Real-Time Development
- 3. Requirements, Use Cases, and System Boundaries
- 4. Object Analysis and Architectural Modeling
- 5. Concurrency, Threads, and Active Objects
- 6. Statecharts and Real-Time State Machines
- 7. Interactions, Sequence, and Communication Models
- 8. Timing, Performance, and Resource Modeling
- 9. Real-Time Design Patterns and Frameworks
- 10. Mapping Models to Implementation (C/C++/Ada)
- 11. Testing, Validation, and Timing Analysis
- 12. Case Studies and Worked Examples
- Appendices: Modeling Guidelines and Tool Notes
Languages, Platforms & Tools
How It Compares
Covers similar ground to Burns & Wellings' Real-Time Systems in terms of timing and predictability, but Douglass emphasizes UML-driven design and object modeling for embedded systems rather than language/runtime specifics.
