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Hands-On High Performance Programming with Qt 5

You're reading from   Hands-On High Performance Programming with Qt 5 Build cross-platform applications using concurrency, parallel programming, and memory management

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Product type Paperback
Published in Jan 2019
Publisher Packt
ISBN-13 9781789531244
Length 384 pages
Edition 1st Edition
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Author (1):
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Marek Krajewski Marek Krajewski
Author Profile Icon Marek Krajewski
Marek Krajewski
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Table of Contents (14) Chapters Close

Preface 1. Understanding Performant Programs 2. Profiling to Find Bottlenecks FREE CHAPTER 3. Deep Dive into C++ and Performance 4. Using Data Structures and Algorithms Efficiently 5. An In-Depth Guide to Concurrency and Multithreading 6. Performance Failures and How to Overcome Them 7. Understanding I/O Performance and Overcoming Related Problems 8. Optimizing Graphical Performance 9. Optimizing Network Performance 10. Qt Performance on Embedded and Mobile Platforms 11. Testing and Deploying Qt Applications 12. Assessments 13. Other Books You May Enjoy

Concurrency, parallelism, and multithreading

As you are a mid-level programmer, I assume you have at least some basic idea of what threads are, how they are different from processes, how and why we synchronize threads, mutexes, and what an atomic variable is.

Nonetheless, we will first have a quick overview of the basic concurrency concepts, namely:

  • Thread: This is an independent unit of computation your operating system (OS) can run in parallel. It is different from a process in that it shares common memory with other threads. In fact, a process can contain several threads.
  • Mutex: This is an abbreviation of "mutual exclusion," also known as a lock. It is a mechanism of the OS, which will block a thread if another thread has already marked the mutex as taken, or in other words, locked or acquired it.
  • Synchronization: C++ standard says that a simultaneous access of...
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