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Linux System Programming Techniques

You're reading from   Linux System Programming Techniques Become a proficient Linux system programmer using expert recipes and techniques

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Product type Paperback
Published in May 2021
Publisher Packt
ISBN-13 9781789951288
Length 432 pages
Edition 1st Edition
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Author (1):
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Jack-Benny Persson Jack-Benny Persson
Author Profile Icon Jack-Benny Persson
Jack-Benny Persson
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Table of Contents (14) Chapters Close

Preface 1. Chapter 1: Getting the Necessary Tools and Writing Our First Linux Programs 2. Chapter 2: Making Your Programs Easy to Script FREE CHAPTER 3. Chapter 3: Diving Deep into C in Linux 4. Chapter 4: Handling Errors in Your Programs 5. Chapter 5: Working with File I/O and Filesystem Operations 6. Chapter 6: Spawning Processes and Using Job Control 7. Chapter 7: Using systemd to Handle Your Daemons 8. Chapter 8: Creating Shared Libraries 9. Chapter 9: Terminal I/O and Changing Terminal Behavior 10. Chapter 10: Using Different Kinds of IPC 11. Chapter 11: Using Threads in Your Programs 12. Chapter 12: Debugging Your Programs 13. Other Books You May Enjoy

Chapter 12: Debugging Your Programs

No program is perfect on the first try. In this chapter, we'll learn how to debug our programs using GDB and Valgrind. With the latter tool, Valgrind, we can find memory leaks in our programs.

We'll also take a look at what memory leaks are, what they can cause, and how to prevent them. Debugging programs and looking at memory is an important step to understanding system programming fully.

In this chapter, we will cover the following recipes:

  • Starting GDB
  • Stepping inside functions with GDB
  • Investigating memory with GDB
  • Modifying variables during runtime
  • Using GDB on a program that forks
  • Debugging programs with multiple threads
  • Finding a simple memory leak with Valgrind
  • Finding buffer overflows with Valgrind
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