optimized c proven techniques for heightened performance

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Optimized C

Author : Kurt Guntheroth
ISBN : 9781491922019
Genre : Computers
File Size : 33. 95 MB
Format : PDF, ePub
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In today’s fast and competitive world, a program’s performance is just as important to customers as the features it provides. This practical guide teaches developers performance-tuning principles that enable optimization in C++. You’ll learn how to make code that already embodies best practices of C++ design run faster and consume fewer resources on any computer—whether it’s a watch, phone, workstation, supercomputer, or globe-spanning network of servers. Author Kurt Guntheroth provides several running examples that demonstrate how to apply these principles incrementally to improve existing code so it meets customer requirements for responsiveness and throughput. The advice in this book will prove itself the first time you hear a colleague exclaim, “Wow, that was fast. Who fixed something?” Locate performance hot spots using the profiler and software timers Learn to perform repeatable experiments to measure performance of code changes Optimize use of dynamically allocated variables Improve performance of hot loops and functions Speed up string handling functions Recognize efficient algorithms and optimization patterns Learn the strengths—and weaknesses—of C++ container classes View searching and sorting through an optimizer’s eye Make efficient use of C++ streaming I/O functions Use C++ thread-based concurrency features effectively

Efficient C

Author : Dov Bulka
ISBN : 0201379503
Genre : Computers
File Size : 70. 47 MB
Format : PDF, ePub
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Far too many programmers and software designers consider efficient C++ to be an oxymoron. They regard C++ as inherently slow and inappropriate for performance-critical applications. Consequently, C++ has had little success penetrating domains such as networking, operating system kernels, device drivers, and others. "Efficient C++" explodes that myth. Written by two authors with first-hand experience wringing the last ounce of performance from commercial C++ applications, this book demonstrates the potential of C++ to produce highly efficient programs. The book reveals practical, everyday object-oriented design principles and C++ coding techniques that can yield large performance improvements. It points out common pitfalls in both design and code that generate hidden operating costs. This book focuses on combining C++'s power and flexibility with high performance and scalability, resulting in the best of both worlds. Specific topics include temporary objects, memory management, templates, inheritance, virtual functions, inlining, reference-counting, STL, and much more. With this book, you will have a valuable compendium of the best performance techniques at your fingertips. 0201379503B04062001

Advanced C Faqs

Author : Chandra Shekhar Kumar
Genre : Computers
File Size : 55. 48 MB
Format : PDF, Mobi
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This book is a combination of the following two books : Advanced C++ FAQs: Volume 1 : FundamentalsAdvanced C++ FAQs: Volume 2 : Generic Programming Advanced C++ FAQs: Volume 1 : Fundamentals This book is not an introduction to C++. It assumes that the reader is aware of the basics of C++98 and C++03 and is keen to expand her horizon to latest and greatest in the present and future of C++, including C++11 and C++1y(aka C++14). It contains selected fundamental problems with detailed solutions to all of these which will help the reader to hone her skills to solve a particular problem. Advanced C++ FAQs: Volume 2 : Generic Programming This book is sequel to the first volume Advanced C++ FAQs : Volume 1 : Fundamentals. It contains selected generic programming problems with detailed solutions. Algorithms 1.1 Efficient Insertion in Vector 1.2 reverse algorithm for forward iterators ... 1.4 swapping unequal sections 1.5 rotate algorithm ... 1.9 Avoid Raw Loops ... 1.13 better algorithm than std::rotate ... 1.16 reverse algorithm dispatch 1.17 Efficient Algorithm for reverse ... 1.21 is partitioned algorithm 1.22 Bisection Algorithm ... 1.25 advance and next 1.26 custom iota ... Utilities 2.1 std::move is rvalue cast 2.2 std::move if noexcept 2.3 std::forward ... 2.6 is same Templates 3.1 alias template 3.2 template parameter pack 3.3 override virtual and template ... ClassesNamespacesType SpecifiersConstant ExpressionC++14 ... 8.4 auto return type in function declaration ... 8.6 return type deduction for lambdas 8.7 decltype(auto) ... 8.9 explicit instantiation and auto 8.10 return type deduction and virtual ... 8.12 generalized lambda capture 8.13 generic lambda and product vector ... MiscellaneousMore C++14 10.1 variable templates ... 10.5 static data member template ... 10.7 default argument and specialization of variable template 10.8 lambda and variable template ... 10.15 auto variable template and generic lambda 10.16 constexpr member functions and implicit const 10.17 constexpr constructor and initialization ... 10.23 deprecated attribute 10.24 Member initializers and aggregate class ... 10.31 Type Transformation Aliases ... 10.33 make unique as perfect forwarding guy ... 10.37 make unique and default initialization 10.38 make unique and array T[n] ... 10.43 Extend make unique : T[N] 10.44 allocate unique 10.45 Compile-time integer sequences ... 10.47 std::index sequence 10.48 Custom Sequence : Addition ... 10.55 sfinae and represent type of function 10.56 metafunction : check presence of type member 10.57 std::common type and sfinae Foundation 11.1 private cast 11.2 Value Type Deduction Framework ... 11.5 Template Alias and Rebind Template 11.6 Template Alias and Non Deducible Context ... 11.8 Template Alias and Specialization ... 11.13 std::copy backward ... 11.18 iota n : iota for writing n items 11.19 Reverse iota ... 11.24 Preventing Name Hijacking ... 11.29 Move Constructor and unique pointer 11.30 Find First Null Pointer in a Container 11.31 Average of variable number of arguments .... 11.33 Exchange Utility 11.34 Addressing Tuple By Type 11.35 Quoted manipulators 11.36 Null Iterator

Optimizing C

Author : Steve Heller
ISBN : UCSD:31822009042961
Genre : Computers
File Size : 20. 64 MB
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The programmer-friendly guide to maximizing C++ application performance! Getting a program to work is just the beginning: it must work efficiently, making the most of limited time, memory, and disk space. Now, legendary programmer Steve Heller --author of the best-seller "Who's Afraid of C++?"-- introduces a collection of power house algorithms that can supercharge virtually any C++ program. From streamlining random access to variable-length records to speeding large database sorts, you'll find it here-along with practical, "nothing-left-out" explanations. Coverage includes: Advanced dynamic hashing and caching algorithms. Bitmaps and other data compression techniques. Fast-sorting algorithms that use memory efficiently. Based on the new ANSI C++ standard, this "programmer-friendly" book includes extensive real-life examples and code samples - all personally typeset by the author to minimize the chance of error. If you want to squeeze every last drop of performance out of your C++ code, Optimizing C++ is the book you've been waiting for! The accompanying CD-ROM includes a complete collection of Steve Heller's Optimizing C++ algorithms, plus an industrial-strength C++ compiler.

Real Time C

Author : Christopher Kormanyos
ISBN : 9783642346880
Genre : Computers
File Size : 72. 80 MB
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The C++ language has powerful object-oriented and template features that can improve software design and portability while simultaneously reducing code complexity and the risk of error. Furthermore, C++ compiles highly efficient native code. This unique and effective combination makes C++ well-suited for programming microcontroller systems that require compact size, high performance and safety-critical reliability. With this book, Chris Kormanyos delivers a highly practical guide to programming real-time embedded microcontroller systems in C++. It is divided into three parts plus several appendices. Part I provides a foundation for real-time C++ by covering language technologies, including object-oriented methods, template programming and optimization. Next, part II presents detailed descriptions of a variety of C++ components that are widely used in microcontroller programming. It details some of C++’s most powerful language elements, such as class types, templates and the STL, to develop components for microcontroller register access, low-level drivers, custom memory management, embedded containers, multitasking, etc. Finally, part III describes mathematical methods and generic utilities that can be employed to solve recurring problems in real-time C++. The appendices include a brief C++ language tutorial, information on the real-time C++ development environment and instructions for building GNU GCC cross-compilers and a microcontroller circuit. The most recent specification of C++11 in ISO/IEC 14882:2011 is used throughout the text. To facilitate portability, no libraries other than those specified in the language standard itself are used. Efficiency is always in focus and numerous examples are backed up with real-time performance measurements and size analyses that quantify the true costs of the code down to the very last byte and microsecond. The target audience of this book mainly consists of students and professionals interested in real-time C++. Readers should be familiar with C or another programming language and will benefit most if they have had some previous experience with microcontroller electronics and the performance and size issues prevalent in embedded systems programming.

Direct Methods For Sparse Linear Systems

Author : Timothy A. Davis
ISBN : 9780898716139
Genre : Computers
File Size : 43. 5 MB
Format : PDF, Kindle
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The sparse backslash book. Everything you wanted to know but never dared to ask about modern direct linear solvers. Chen Greif, Assistant Professor, Department of Computer Science, University of British Columbia.Overall, the book is magnificent. It fills a long-felt need for an accessible textbook on modern sparse direct methods. Its choice of scope is excellent John Gilbert, Professor, Department of Computer Science, University of California, Santa Barbara.Computational scientists often encounter problems requiring the solution of sparse systems of linear equations. Attacking these problems efficiently requires an in-depth knowledge of the underlying theory, algorithms, and data structures found in sparse matrix software libraries. Here, Davis presents the fundamentals of sparse matrix algorithms to provide the requisite background. The book includes CSparse, a concise downloadable sparse matrix package that illustrates the algorithms and theorems presented in the book and equips readers with the tools necessary to understand larger and more complex software packages.With a strong emphasis on MATLAB and the C programming language, Direct Methods for Sparse Linear Systems equips readers with the working knowledge required to use sparse solver packages and write code to interface applications to those packages. The book also explains how MATLAB performs its sparse matrix computations.Audience This invaluable book is essential to computational scientists and software developers who want to understand the theory and algorithms behind modern techniques used to solve large sparse linear systems. The book also serves as an excellent practical resource for students with an interest in combinatorial scientific computing.Preface; Chapter 1: Introduction; Chapter 2: Basic algorithms; Chapter 3: Solving triangular systems; Chapter 4: Cholesky factorization; Chapter 5: Orthogonal methods; Chapter 6: LU factorization; Chapter 7: Fill-reducing orderings; Chapter 8: Solving sparse linear systems; Chapter 9: CSparse; Chapter 10: Sparse matrices in MATLAB; Appendix: Basics of the C programming language; Bibliography; Index.

Api Design For C

Author : Martin Reddy
ISBN : 0123850045
Genre : Computers
File Size : 37. 99 MB
Format : PDF, Docs
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API Design for C++ provides a comprehensive discussion of Application Programming Interface (API) development, from initial design through implementation, testing, documentation, release, versioning, maintenance, and deprecation. It is the only book that teaches the strategies of C++ API development, including interface design, versioning, scripting, and plug-in extensibility. Drawing from the author's experience on large scale, collaborative software projects, the text offers practical techniques of API design that produce robust code for the long term. It presents patterns and practices that provide real value to individual developers as well as organizations. API Design for C++ explores often overlooked issues, both technical and non-technical, contributing to successful design decisions that product high quality, robust, and long-lived APIs. It focuses on various API styles and patterns that will allow you to produce elegant and durable libraries. A discussion on testing strategies concentrates on automated API testing techniques rather than attempting to include end-user application testing techniques such as GUI testing, system testing, or manual testing. Each concept is illustrated with extensive C++ code examples, and fully functional examples and working source code for experimentation are available online. This book will be helpful to new programmers who understand the fundamentals of C++ and who want to advance their design skills, as well as to senior engineers and software architects seeking to gain new expertise to complement their existing talents. Three specific groups of readers are targeted: practicing software engineers and architects, technical managers, and students and educators. The only book that teaches the strategies of C++ API development, including design, versioning, documentation, testing, scripting, and extensibility. Extensive code examples illustrate each concept, with fully functional examples and working source code for experimentation available online. Covers various API styles and patterns with a focus on practical and efficient designs for large-scale long-term projects.

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