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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

Questions

As usual, here are some questions to test and maybe deepen your understanding of the material in this chapter.

  1. Why is a data race an undefined behavior (UB) in C++?
  2. What does resource acquisition is initialization (RAII) mean? (we have seen it already in Chapter 3, Deep Dive into C++ and Performance) and how it can be used in QAtomicLocker?
  3. Why can volatile variables not be used to prevent race conditions?
  4. What are spurious wakes and why aren't they banned?
  5. Assume you are an OS (or some tool) and have just detected a deadlock. What could you do to resolve it?
  6. What is cache ping-pong?
  7. If you define slots in a QThread subclass, what do you think will happen when they get invoked by a signal?
  8. What do you think, the Windows system call InitializeCriticalSectionAndSpinCount() could do?
  9. What do you understand about using QProcess instead of QThread?
  10. What does the phrase...
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