Book Image

Hands-On High Performance Programming with Qt 5

By : Marek Krajewski
5 (1)
Book Image

Hands-On High Performance Programming with Qt 5

5 (1)
By: Marek Krajewski

Overview of this book

Achieving efficient code through performance tuning is one of the key challenges faced by many programmers. This book looks at Qt programming from a performance perspective. You'll explore the performance problems encountered when using the Qt framework and means and ways to resolve them and optimize performance. The book highlights performance improvements and new features released in Qt 5.9, Qt 5.11, and 5.12 (LTE). You'll master general computer performance best practices and tools, which can help you identify the reasons behind low performance, and the most common performance pitfalls experienced when using the Qt framework. In the following chapters, you’ll explore multithreading and asynchronous programming with C++ and Qt and learn the importance and efficient use of data structures. You'll also get the opportunity to work through techniques such as memory management and design guidelines, which are essential to improve application performance. Comprehensive sections that cover all these concepts will prepare you for gaining hands-on experience of some of Qt's most exciting application fields - the mobile and embedded development domains. By the end of this book, you'll be ready to build Qt applications that are more efficient, concurrent, and performance-oriented in nature
Table of Contents (14 chapters)

Platform and tools

Now, as we already know what kinds of tools can be used for profiling, there will come a time when we will have to get our hands dirty and delve deeper into typical performance optimization work. For you to be able to reproduce it, we have to agree on the exact versions of our frameworks and tools. To make it short, we've decided on the following:

  • Qt 5.9 LTE
  • Windows 10
  • Open source tools

This warrants some explanation, so read on. Let's start with the Qt framework.

Qt has many different versions and releases, but in this book, we have chosen to concentrate on the current (at the time of writing) long-term support (LTS) version, namely Qt 5.9—as it's the recent most stable release. Admittedly, a preview version of Qt 5.11 was present in the distribution, but we have, much to my regret, to ignore it.

Qt is a multiplatform framework; it...