Book Image

Hands-On Design Patterns with C++ (Second Edition) - Second Edition

By : Fedor G. Pikus
5 (1)
Book Image

Hands-On Design Patterns with C++ (Second Edition) - Second Edition

5 (1)
By: Fedor G. Pikus

Overview of this book

C++ is a general-purpose programming language designed for efficiency, performance, and flexibility. Design patterns are commonly accepted solutions to well-recognized design problems. In essence, they are a library of reusable components, only for software architecture, and not for a concrete implementation. This book helps you focus on the design patterns that naturally adapt to your needs, and on the patterns that uniquely benefit from the features of C++. Armed with the knowledge of these patterns, you’ll spend less time searching for solutions to common problems and tackle challenges with the solutions developed from experience. You’ll also explore that design patterns are a concise and efficient way to communicate, as patterns are a familiar and recognizable solution to a specific problem and can convey a considerable amount of information with a single line of code. By the end of this book, you’ll have a deep understanding of how to use design patterns to write maintainable, robust, and reusable software.
Table of Contents (26 chapters)
1
Part 1: Getting Started with C++ Features and Concepts
5
Part 2: Common C++ Idioms
10
Part 3: C++ Design Patterns
18
Part 4: Advanced C++ Design Patterns

Performance of type erasure

We are going to measure the performance of a type-erased generic function and a type-erased smart pointer deleter. First, we need the right tools; in this case, a micro-benchmarking library.

Installing the micro-benchmark library

In our case, we are interested in the efficiency of very small fragments of code that construct and delete objects using different kinds of smart pointers. The appropriate tool for measuring the performance of small fragments of code is a micro-benchmark. There are many micro-benchmark libraries and tools out there; in this book, we will use the Google Benchmark library. To follow along with the examples in this section, you must first download and install the library (to do this, follow the instructions in the Readme.md file). Then you can compile and run the examples. You can build the sample files included with the library to see how to build a benchmark on your particular system. For example, on a Linux machine, the command...