Synchronization in Real-Time Systems

Synchronization in Real-Time Systems PDF Author: Ragunathan Rajkumar
Publisher: Springer Science & Business Media
ISBN: 1461540003
Category : Computers
Languages : en
Pages : 191

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Book Description
Real-time computing systems are vital to a wide range of applications. For example, they are used in the control of nuclear reactors and automated manufacturing facilities, in controlling and tracking air traffic, and in communication systems. In recent years, real-time systems have also grown larger and become more critical. For instance, advanced aircraft such as the space shuttle must depend heavily on computer sys tems [Carlow 84]. The centralized control of manufacturing facilities and assembly plants operated by robots are other examples at the heart of which lie embedded real-time systems. Military defense systems deployed in the air, on the ocean surface, land and underwater, have also been increasingly relying upon real-time systems for monitoring and operational safety purposes, and for retaliatory and containment measures. In telecommunications and in multi-media applications, real time characteristics are essential to maintain the integrity of transmitted data, audio and video signals. Many of these systems control, monitor or perform critical operations, and must respond quickly to emergency events in a wide range of embedded applications. They are therefore required to process tasks with stringent timing requirements and must perform these tasks in a way that these timing requirements are guaranteed to be met. Real-time scheduling al gorithms attempt to ensure that system timing behavior meets its specifications, but typically assume that tasks do not share logical or physical resources. Since resource-sharing cannot be eliminated, synchronization primitives must be used to ensure that resource consis tency constraints are not violated.

Real-Time Systems Development

Real-Time Systems Development PDF Author: Rob Williams
Publisher: Elsevier
ISBN: 0080456405
Category : Computers
Languages : en
Pages : 468

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Book Description
Real-Time Systems Development introduces computing students and professional programmers to the development of software for real-time applications. Based on the academic and commercial experience of the author, the book is an ideal companion to final year undergraduate options or MSc modules in the area of real-time systems design and implementation. Assuming a certain level of general systems design and programming experience, this text will extend students' knowledge and skills into an area of computing which has increasing relevance in a modern world of telecommunications and 'intelligent' equipment using embedded microcontrollers. This book takes a broad, practical approach in discussing real-time systems. It covers topics such as basic input and output; cyclic executives for bare hardware; finite state machines; task communication and synchronization; input/output interfaces; structured design for real-time systems; designing for multitasking; UML for real-time systems; object oriented approach to real-time systems; selecting languages for RTS development; Linux device drivers; and hardware/software co-design. Programming examples using GNU/Linux are included, along with a supporting website containing slides; solutions to problems; and software examples. This book will appeal to advanced undergraduate Computer Science students; MSc students; and, undergraduate software engineering and electronic engineering students. * Concise treatment delivers material in manageable sections* Includes handy glossary, references and practical exercises based on familiar scenarios* Supporting website contains slides, solutions to problems and software examples

Soft Real-Time Systems: Predictability vs. Efficiency

Soft Real-Time Systems: Predictability vs. Efficiency PDF Author: Giorgio C Buttazzo
Publisher: Springer Science & Business Media
ISBN: 0387281479
Category : Computers
Languages : en
Pages : 281

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Book Description
Hard real-time systems are very predictable, but not sufficiently flexible to adapt to dynamic situations. They are built under pessimistic assumptions to cope with worst-case scenarios, so they often waste resources. Soft real-time systems are built to reduce resource consumption, tolerate overloads and adapt to system changes. They are also more suited to novel applications of real-time technology, such as multimedia systems, monitoring apparatuses, telecommunication networks, mobile robotics, virtual reality, and interactive computer games. This unique monograph provides concrete methods for building flexible, predictable soft real-time systems, in order to optimize resources and reduce costs. It is an invaluable reference for developers, as well as researchers and students in Computer Science.

Real-Time and Distributed Real-Time Systems

Real-Time and Distributed Real-Time Systems PDF Author: Amitava Gupta
Publisher: CRC Press
ISBN: 1466598492
Category : Computers
Languages : en
Pages : 174

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Book Description
Digital computers have revolutionized computation and transformed how computers are used to control systems in real life, giving birth to real-time systems. Furthermore, massive developments in the communications domain have made it possible for real-time systems to perform coordinated actions over communication interfaces, resulting in the evoluti

Real-Time Systems Development with RTEMS and Multicore Processors

Real-Time Systems Development with RTEMS and Multicore Processors PDF Author: Gedare Bloom
Publisher: CRC Press
ISBN: 1351255789
Category : Computers
Languages : en
Pages : 535

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Book Description
The proliferation of multicore processors in the embedded market for Internet-of-Things (IoT) and Cyber-Physical Systems (CPS) makes developing real-time embedded applications increasingly difficult. What is the underlying theory that makes multicore real-time possible? How does theory influence application design? When is a real-time operating system (RTOS) useful? What RTOS features do applications need? How does a mature RTOS help manage the complexity of multicore hardware? Real-Time Systems Development with RTEMS and Multicore Processors answers these questions and more with exemplar Real-Time Executive for Multiprocessor Systems (RTEMS) RTOS to provide concrete advice and examples for constructing useful, feature-rich applications. RTEMS is free, open-source software that supports multi-processor systems for over a dozen CPU architectures and over 150 specific system boards in applications spanning the range of IoT and CPS domains such as satellites, particle accelerators, robots, racing motorcycles, building controls, medical devices, and more. The focus of this book is on enabling real-time embedded software engineering while providing sufficient theoretical foundations and hardware background to understand the rationale for key decisions in RTOS and application design and implementation. The topics covered in this book include: Cross-compilation for embedded systems development Concurrent programming models used in real-time embedded software Real-time scheduling theory and algorithms used in wide practice Usage and comparison of two application programmer interfaces (APIs) in real-time embedded software: POSIX and the RTEMS Classic APIs Design and implementation in RTEMS of commonly found RTOS features for schedulers, task management, time-keeping, inter-task synchronization, inter-task communication, and networking The challenges introduced by multicore hardware, advances in multicore real-time theory, and software engineering multicore real-time systems with RTEMS All the authors of this book are experts in the academic field of real-time embedded systems. Two of the authors are primary open-source maintainers of the RTEMS software project.

Real-Time Systems

Real-Time Systems PDF Author: Hermann Kopetz
Publisher: Springer Nature
ISBN: 3031119924
Category : Technology & Engineering
Languages : en
Pages : 411

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Book Description
"This book is a comprehensive text for the design of safety critical, hard real-time embedded systems. It offers a splendid example for the balanced, integrated treatment of systems and software engineering, helping readers tackle the hardest problems of advanced real-time system design, such as determinism, compositionality, timing and fault management. This book is an essential reading for advanced undergraduates and graduate students in a wide range of disciplines impacted by embedded computing and software. Its conceptual clarity, the style of explanations and the examples make the abstract concepts accessible for a wide audience." Janos Sztipanovits, Director E. Bronson Ingram Distinguished Professor of Engineering Institute for Software Integrated Systems Vanderbilt University Real-Time Systems focuses on hard real-time systems, which are computing systems that must meet their temporal specification in all anticipated load and fault scenarios. The book stresses the system aspects of distributed real-time applications, treating the issues of real-time, distribution and fault-tolerance from an integral point of view. A unique cross-fertilization of ideas and concepts between the academic and industrial worlds has led to the inclusion of many insightful examples from industry to explain the fundamental scientific concepts in a real-world setting. Compared to the Second Edition, new developments in communication standards for time-sensitive networks, such as TSN and Time-Triggered Ethernet are addressed. Furthermore, this edition includes a new chapter on real-time aspects in cloud and fog computing. The book is written as a standard textbook for a high-level undergraduate or graduate course on real-time embedded systems or cyber-physical systems. Its practical approach to solving real-time problems, along with numerous summary exercises, makes it an excellent choice for researchers and practitioners alike.

Handbook of Real-Time Computing

Handbook of Real-Time Computing PDF Author: Yu-Chu Tian
Publisher: Springer Nature
ISBN: 9812872515
Category : Technology & Engineering
Languages : en
Pages : 1511

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Book Description
The aim of this handbook is to summarize the recent rapidly developed real-time computing technologies, from theories to applications. This handbook benefits the readers as a full and quick technical reference with a high-level historic review of technology, detailed technical descriptions and the latest practical applications. In general, the handbook is divided into three main parts (subjected to be modified): theory, design, and application covering different but not limited to the following topics: - Real-time operating systems - Real-time scheduling - Timing analysis - Programming languages and run-time systems - Middleware systems - Design and analysis tools - Real-time aspects of wireless sensor networks - Energy aware real-time methods

Real Time Systems

Real Time Systems PDF Author: Syed Muzamil Basha
Publisher: MileStone Research Publications
ISBN: 9358134267
Category : Computers
Languages : en
Pages : 113

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Book Description
Real-time systems are computer systems that are designed to respond to external events within a specified time constraint. These systems are used in a variety of applications, including control systems, communication systems, multimedia systems, and embedded systems. Real-time systems must be able to respond to events in a timely and deterministic manner, meaning that the response time must be guaranteed and consistent. One of the main challenges in designing real-time systems is ensuring that they are predictable and reliable. Real-time systems must be able to handle a wide range of input conditions, from normal operation to extreme conditions, without crashing or failing to meet their deadlines. This requires careful design and implementation, as well as testing and verification to ensure that the system behaves as intended. Real-time systems often have unique requirements that differ from those of traditional computer systems. For example, real-time systems may need to operate in harsh environments, such as extreme temperatures or high radiation levels. They may also need to communicate with other systems in real-time, which requires low-latency communication protocols and high bandwidth. In addition to these technical challenges, there are also legal and ethical considerations when designing real-time systems. For example, systems used in safety-critical applications, such as medical devices or transportation systems, must meet strict regulatory requirements and undergo rigorous testing and certification processes. Overall, the design and implementation of real-time systems is a complex and challenging task that requires a deep understanding of the system's requirements, its environment, and the technologies available. In this textbook, we will explore the key concepts, principles, and techniques used in the design and analysis of real-time systems. We will cover topics such as scheduling, synchronization, communication, fault-tolerance, and performance analysis, and provide examples and case studies to illustrate these concepts. By the end of this book, readers will have a solid understanding of real-time systems and the skills needed to design and implement them effectively.

Distributed Real-Time Systems

Distributed Real-Time Systems PDF Author: K. Erciyes
Publisher: Springer
ISBN: 3030225704
Category : Computers
Languages : en
Pages : 348

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Book Description
This classroom-tested textbook describes the design and implementation of software for distributed real-time systems, using a bottom-up approach. The text addresses common challenges faced in software projects involving real-time systems, and presents a novel method for simply and effectively performing all of the software engineering steps. Each chapter opens with a discussion of the core concepts, together with a review of the relevant methods and available software. This is then followed with a description of the implementation of the concepts in a sample kernel, complete with executable code. Topics and features: introduces the fundamentals of real-time systems, including real-time architecture and distributed real-time systems; presents a focus on the real-time operating system, covering the concepts of task, memory, and input/output management; provides a detailed step-by-step construction of a real-time operating system kernel, which is then used to test various higher level implementations; describes periodic and aperiodic scheduling, resource management, and distributed scheduling; reviews the process of application design from high-level design methods to low-level details of design and implementation; surveys real-time programming languages and fault tolerance techniques; includes end-of-chapter review questions, extensive C code, numerous examples, and a case study implementing the methods in real-world applications; supplies additional material at an associated website. Requiring only a basic background in computer architecture and operating systems, this practically-oriented work is an invaluable study aid for senior undergraduate and graduate-level students of electrical and computer engineering, and computer science. The text will also serve as a useful general reference for researchers interested in real-time systems.

Advances in Computing and Information Technology

Advances in Computing and Information Technology PDF Author: Natarajan Meghanathan
Publisher: Springer Science & Business Media
ISBN: 3642315135
Category : Technology & Engineering
Languages : en
Pages : 800

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Book Description
The international conference on Advances in Computing and Information technology (ACITY 2012) provides an excellent international forum for both academics and professionals for sharing knowledge and results in theory, methodology and applications of Computer Science and Information Technology. The Second International Conference on Advances in Computing and Information technology (ACITY 2012), held in Chennai, India, during July 13-15, 2012, covered a number of topics in all major fields of Computer Science and Information Technology including: networking and communications, network security and applications, web and internet computing, ubiquitous computing, algorithms, bioinformatics, digital image processing and pattern recognition, artificial intelligence, soft computing and applications. Upon a strength review process, a number of high-quality, presenting not only innovative ideas but also a founded evaluation and a strong argumentation of the same, were selected and collected in the present proceedings, that is composed of three different volumes.