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Michael C. Feathers
The average book on Agile software development describes a fairyland of greenfield projects, with wall-to-wall tests that run after every few edits, and clean & simple source code.
The average software project, in our industry, was written under some aspect of code-and-fix, and without automated unit tests. And we can't just throw this code away; it represents a significant effort debugging and maintaining. It contains many latent requirements decisions. Just as Agile processes are incremental, Agile adoption must be incremental too. No more throwing away code just because it looked at us funny.
Mike begins his book with a very diplomatic definition of "Legacy". I'l skip ahead to the undiplomatic version: Legacy code is code without unit tests.
Before cleaning that code up, and before adding new features and removing bugs, such code must be de-legacified. It needs unit tests.
To add unit tests, you must change the code. To change the code, you need unit tests to show how safe your change was.
The core of the book is a cookbook of recipes to conduct various careful attacks. Each presents a particular problem, and a relatively safe way to migrate the code towards tests.
Code undergoing this migration will begin to experience the benefits of unit tests, and these benefits will incrementally make new tests easier to write. These efforts will make aspects of a legacy codebase easy to change.
It's an unfortunate commentary on the state of our programming industry how much we need this book.
Features the best practices in the art and science of constructing software--topics include design, applying good techniques to construction, eliminating errors, planning, managing construction activities, and relating personal character to superior software. Original. (Intermediate)
In designing large-scale C++ applications, you are entering a dimension barely skimmed by most C++ books, particularly considering experience with small programming projects does not scale up to larger projects. This book unites high-level design concepts with specific C++ programming details to reveal practical methods for planning and implementing high-quality large C++ systems. You will learn the importance of physical design in large systems, how to structure your software as an acyclic hierarchy of components, and techniques for reducing link-time and compile-time dependencies. Then the book turns to logical design issues--architecting a component, designing a function, and implementing an object--all in the context of a large-project environment.
Andrew S. Tanenbaum, Albert S. Woodhull
Featuring an introduction to operating systems, this work reflects advances in OS design and implementation. Using MINIX, this book introduces various concepts needed to construct a working OS, such as system calls, processes, IPC, scheduling, I/O, deadlocks, memory management, threads, file systems, security, and more.
The #1 practical, hands-on guide to developing systems based on embedded Linux - fully updated with extensive new coverage * *Helps programmers rapidly climb the learning curve, maximize productivity, and handle today's most important development challenges. *Contains new chapters on PCI Subsystem, Hotplug and UDEV, USB, and reducing boot time. *Offers practical coverage of Flash-resident filesystem images, the Memory Technology Devices subsystem, and today's hot new multicore processors. Product manufacturers are increasingly turning to embedded Linux - and thousands of software and firmware engineers must now master it for the first time. Embedded Linux Primer has become their #1 resource. Christopher Hallinan offers practical solutions for the real-world challenges embedded developers face - whether they are experienced legacy embedded systems developers moving to Linux or experienced Linux developers moving to embedded systems. Hallinan introduces Linux in embedded environments, covers all major systems and development issues, and offers dozens of valuable tips, tools and problemsolving techniques. His extensive code examples have been assembled from operational hardware running current versions of embedded Linux using the latest development and debugging tools. This book's wide-ranging, practical coverage includes: Linux kernel initialization; the special role of bootloaders and U-Boot in embedded Linux; the use of embedded Linux file systems, including JFFS2; building Flash resident file systems; using the Memory Technology Devices (MTD) subsystem with today's popular flash memory devices; and much more. This Second Edition has been updated for the latest kernel versions, and contains new chapters on the PCI Subsystem, Hotplug and UDEV, USB, and Reducing Boot Time. Readers will also find a detailed introduction to multicore, one of the hottest trends in embedded computing.
John R. Levine
Whatever your programming language, whatever your platform, you probably tap into linker and loader functions all the time. But do you know how to use them to their greatest possible advantage? Only now, with the publication of Linkers & Loaders, is there an authoritative book devoted entirely to these deep-seated compile-time and run-time processes. The book begins with a detailed and comparative account of linking and loading that illustrates the differences among various compilers and operating systems. On top of this foundation, the author presents clear practical advice to help you create faster, cleaner code. You'll learn to avoid the pitfalls associated with Windows DLLs, take advantage of the space-saving, performance-improving techniques supported by many modern linkers, make the best use of the UNIX ELF library scheme, and much more. If you're serious about programming, you'll devour this unique guide to one of the field's least understood topics. Linkers & Loaders is also an ideal supplementary text for compiler and operating systems courses. *Includes a linker construction project written in Perl, with project files available for download. *Covers dynamic linking in Windows, UNIX, Linux, BeOS, and other operating systems. *Explains the Java linking model and how it figures in network applets and extensible Java code. *Helps you write more elegant and effective code, and build applications that compile, load, and run more efficiently.
One of the world's most experienced Linux driver developers demonstrates how to develop reliable Linux drivers for virtually any device. This resource is for any programmer with a working knowledge of operating systems and C, including programmers who have never written drivers before.
John L. Hennessy, David A. Patterson
This best-selling title, considered for over a decade to be essential reading for every serious student and practitioner of computer design, has been updated throughout to address the most important trends facing computer designers today. In this edition, the authors bring their trademark method of quantitative analysis not only to high performance desktop machine design, but also to the design of embedded and server systems. They have illustrated their principles with designs from all three of these domains, including examples from consumer electronics, multimedia and web technologies, and high performance computing. The book retains its highly rated features: Fallacies and Pitfalls, which share the hard-won lessons of real designers; Historical Perspectives, which provide a deeper look at computer design history; Putting it all Together, which present a design example that illustrates the principles of the chapter; Worked Examples, which challenge the reader to apply the concepts, theories and methods in smaller scale problems; and Cross-Cutting Issues, which show how the ideas covered in one chapter interact with those presented in others. In addition, a new feature, Another View, presents brief design examples in one of the three domains other than the one chosen for Putting It All Together. The authors present a new organization of the material as well, reducing the overlap with their other text, Computer Organization and Design: A Hardware/Software Approach 2/e, and offering more in-depth treatment of advanced topics in multithreading, instruction level parallelism, VLIW architectures, memory hierarchies, storage devices and network technologies. Also new to this edition, is the adoption of the MIPS 64 as the instruction set architecture. In addition to several online appendixes, two new appendixes will be printed in the book: one contains a complete review of the basic concepts of pipelining, the other provides solutions a selection of the exercises. Both will be invaluable to the student or professional learning on her own or in the classroom. Hennessy and Patterson continue to focus on fundamental techniques for designing real machines and for maximizing their cost/performance. * Presents state-of-the-art design examples including: * IA-64 architecture and its first implementation, the Itanium * Pipeline designs for Pentium III and Pentium IV * The cluster that runs the Google search engine * EMC storage systems and their performance * Sony Playstation 2 * Infiniband, a new storage area and system area network * SunFire 6800 multiprocessor server and its processor the UltraSPARC III * Trimedia TM32 media processor and the Transmeta Crusoe processor * Examines quantitative performance analysis in the commercial server market and the embedded market, as well as the traditional desktop market. Updates all the examples and figures with the most recent benchmarks, such as SPEC 2000. * Expands coverage of instruction sets to include descriptions of digital signal processors, media processors, and multimedia extensions to desktop processors. * Analyzes capacity, cost, and performance of disks over two decades. Surveys the role of clusters in scientific computing and commercial computing. * Presents a survey, taxonomy, and the benchmarks of errors and failures in computer systems. * Presents detailed descriptions of the design of storage systems and of clusters. * Surveys memory hierarchies in modern microprocessors and the key parameters of modern disks. * Presents a glossary of networking terms.
Andrew N. Sloss, Dominic Symes, Chris Wright
This book provides a comprehensive description of the operation of the ARM core from a developer's perspective with a clear emphasis on software. It demonstrates not only how to write efficient ARM software in C and assembly but also how to optimize code. Example code throughout the book can be integrated into commercial products or used as templates to enable quick creation of productive software.
John L. Hennessy, David A. Patterson
This book trains the student with the concepts needed to lay a solid foundation for joining this exciting field. More importantly, this book provides a framework for thinking about computer organization and design that will enable the reader to continue the lifetime of learning necessary for staying at the forefront of this competitive discipline. --John Crawford Intel Fellow Director of Microprocessor Architecture, Intel The performance of software systems is dramatically affected by how well software designers understand the basic hardware technologies at work in a system. Similarly, hardware designers must understand the far reaching effects their design decisions have on software applications. For readers in either category, this classic introduction to the field provides a deep look into the computer. It demonstrates the relationship between the software and hardware and focuses on the foundational concepts that are the basis for current computer design. Using a distinctive learning by evolution approach the authors present each idea from its first principles, guiding readers through a series of worked examples that incrementally add more complex instructions until they ha
Explains how to streamline an embedded code project through the use of UML (unified modeling language) statecharts as a framework for creating and maintaining efficient and maintainable systems, describing the new features and functions of the open-source software framework, while discussing statecharts, design applications, and how to code directly into C/C++. Original. (Advanced)
Penny Orwick, Guy Smith
Provides guidance and code samples to develop kernel-mode or user-mode drivers with Windows Driver Foundation.
Christopher W. Fraser
Examining the implementation of lcc, a production-quality, research-oriented retargetable compiler, designed at AT&T Bell Laboratories for the ANSI C programming language, this book is designed for professionals who seek a detailed examination of a real-world compiler. A thorough and accurate picture of the lcc compiler is provided, and a line-by-line explanation of the code demonstrates how the compiler is built. The accompanying disk holds the full source code for the lcc compiler, the three back ends and the code-generator.
David Money Harris, Sarah L. Harris
Designed for courses that combine digital logic design with computer organization/architecture or that teach these subjects as a two-course sequence, this text covers the fundamentals and then introduces Hardware Description Languages (HDLs).
David E. Simon
Simon introduces the broad range of applications for embedded software and then reviews each major issue facing developers, offering practical solutions, techniques, and good habits that apply no matter which processor, real-time operating systems, methodology, or application is used.
This is the thoroughly revised and updated second edition of the hugely successful The Art of Electronics. Widely accepted as the authoritative text and reference on electronic circuit design, both analog and digital, this book revolutionized the teaching of electronics by emphasizing the methods actually used by circuit designers -- a combination of some basic laws, rules of thumb, and a large bag of tricks. The result is a largely nonmathematical treatment that encourages circuit intuition, brainstorming, and simplified calculations of circuit values and performance. The new Art of Electronics retains the feeling of informality and easy access that helped make the first edition so successful and popular. It is an ideal first textbook on electronics for scientists and engineers and an indispensable reference for anyone, professional or amateur, who works with electronic circuits.
R is revolutionizing the world of statistical computing. Powerful, flexible, and best of all free, R is now the program of choice for tens of thousands of statisticians. Destined to become an instant classic, R Graphics presents the first complete, authoritative exposition on the R graphical system. Paul Murrell, widely known as the leading expert on R graphics, has developed an in-depth resource that takes nothing for granted and helps both neophyte and seasoned users master the intricacies of R graphics. After an introductory overview of R graphics facilities, the presentation first focuses on the traditional graphics system, showing how to work the traditional functions, describing functions that are available to produce complete plots, and how to customize the details of plots. The second part of the book describes the grid graphics system - a system unique to R and much more powerful than the traditional system. The author, who was integral in the development of the grid system, shows, starting from a blank page, how it can be used to produce graphical scenes. He also describes how to develop new graphical functions that are easy for others to use and build on. Appendices contain a brief introduction to the R system in general and discuss how the traditional and grid graphics systems can be combined. Much of the information presented in this book cannot be found anywhere else. Well ahead of the curve, particularly regarding the grid system, R Graphics will have a major impact on the future direction of statistical graphics development. The author maintains a website with more information.
Michael Abrash explores the inner workings of all Intel-based PCs including the hot new Pentium. This is the only book available that provides practical and innovative "right-brain" approaches to writing fast PC software using C/C++ and assembly language. This book is packed with "from the trenches" programming secrets and features "undocumented" Pentium programming tips. Provides hundreds of optimized coding examples.
Embedded computer systems literally surround us: they're in our cell phones, PDAs, cars, TVs, refrigerators, heating systems, and more. In fact, embedded systems are one of the most rapidly growing segments of the computer industry today. Along with the growing list of devices for which embedded computer systems are appropriate, interest is growing among programmers, hobbyists, and engineers of all types in how to design and build devices of their own. Furthermore, the knowledge offered by this book into the fundamentals of these computer systems can benefit anyone who has to evaluate and apply the systems. The second edition of Designing Embedded Hardware has been updated to include information on the latest generation of processors and microcontrollers, including the new MAXQ processor. If you're new to this and don't know what a MAXQ is, don't worry--the book spells out the basics of embedded design for beginners while providing material useful for advanced systems designers. Designing Embedded Hardware steers a course between those books dedicated to writing code for particular microprocessors, and those that stress the philosophy of embedded system design without providing any practical information. Having designed 40 embedded computer systems of his own, author John Catsoulis brings a wealth of real-world experience to show readers how to design and create entirely new embedded devices and computerized gadgets, as well as how to customize and extend off-the-shelf systems. Loaded with real examples, this book also provides a roadmap to the pitfalls and traps to avoid. Designing Embedded Hardware includes: The theory and practice of embedded systems Understanding schematics and data sheets Powering an embedded system Producing and debugging an embedded system Processors such as the PIC, Atmel AVR, and Motorola 68000-series Digital Signal Processing (DSP) architectures Protocols (SPI and I2C) used to add peripherals RS-232C, RS-422, infrared communication, and USB CAN and Ethernet networking Pulse Width Monitoring and motor control If you want to build your own embedded system, or tweak an existing one, this invaluable book gives you the understanding and practical skills you need.
Allen I. Holub
C and C++ programmers who are looking for innovative ways to improve their code will find them in this first-of-its-kind reference. Holub has put together an indispensable set of guidelines, tips, and techniques that readers can use immediately to create elegant, efficient code in any C or C++ program.
Comprehensive Real-World Guidance for Every Embedded Developer and Engineer This book brings together indispensable knowledge for building efficient, high-value, Linux-based embedded products: information that has never been assembled in one place before. Drawing on years of experience as an embedded Linux consultant and field application engineer, Christopher Hallinan offers solutions for the specific technical issues you’re most likely to face, demonstrates how to build an effective embedded Linux environment, and shows how to use it as productively as possible. Hallinan begins by touring a typical Linux-based embedded system, introducing key concepts and components, and calling attention to differences between Linux and traditional embedded environments. Writing from the embedded developer’s viewpoint, he thoroughly addresses issues ranging from kernel building and initialization to bootloaders, device drivers to file systems. Hallinan thoroughly covers the increasingly popular BusyBox utilities; presents a step-by-step walkthrough of porting Linux to custom boards; and introduces real-time configuration via CONFIG_RT--one of today’s most exciting developments in embedded Linux. You’ll find especially detailed coverage of using development tools to analyze and debug embedded systems--including the art of kernel debugging. Compare leading embedded Linux processors Understand the details of the Linux kernel initialization process Learn about the special role of bootloaders in embedded Linux systems, with specific emphasis on U-Boot Use embedded Linux file systems, including JFFS2--with detailed guidelines for building Flash-resident file system images Understand the Memory Technology Devices subsystem for flash (and other) memory devices Master gdb, KGDB, and hardware JTAG debugging Learn many tips and techniques for debugging within the Linux kernel Maximize your productivity in cross-development environments Prepare your entire development environment, including TFTP, DHCP, and NFS target servers Configure, build, and initialize BusyBox to support your unique requirements About the Author Christopher Hallinan, field applications engineer at MontaVista software, has worked for more than 20 years in assignments ranging from engineering and engineering management to marketing and business development. He spent four years as an independent development consultant in the embedded Linux marketplace. His work has appeared in magazines, including Telecommunications Magazine, Fiber Optics Magazine, and Aviation Digest.