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Practical System Programming for Rust Developers

You're reading from   Practical System Programming for Rust Developers Build fast and secure software for Linux/Unix systems with the help of practical examples

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Product type Paperback
Published in Dec 2020
Publisher Packt
ISBN-13 9781800560963
Length 388 pages
Edition 1st Edition
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Tools
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Author (1):
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Prabhu Eshwarla Prabhu Eshwarla
Author Profile Icon Prabhu Eshwarla
Prabhu Eshwarla
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Table of Contents (17) Chapters Close

Preface 1. Section 1: Getting Started with System Programming in Rust
2. Chapter 1: Tools of the Trade – Rust Toolchains and Project Structures FREE CHAPTER 3. Chapter 2: A Tour of the Rust Programming Language 4. Chapter 3: Introduction to the Rust Standard Library 5. Chapter 4: Managing Environment, Command Line, and Time 6. Section 2: Managing and Controlling System Resources in Rust
7. Chapter 5: Memory Management in Rust 8. Chapter 6: Working with Files and Directories in Rust 9. Chapter 7: Implementing Terminal I/O in Rust 10. Chapter 8: Working with Processes and Signals 11. Chapter 9: Managing Concurrency 12. Section 3: Advanced Topics
13. Chapter 10: Working with Device I/O 14. Chapter 11: Learning Network Programming 15. Chapter 12: Writing Unsafe Rust and FFI 16. Other Books You May Enjoy

Handling panic, errors, and signals

Processes can fail due to various error conditions. These have to be handled in a controlled manner. There may also be situations where we want to terminate a process in response to external inputs, such as a user pressing Ctrl + C. How we can handle such situations is the focus of this section.

Note

In cases when processes exit due to errors, the operating system itself performs some cleanup, such as releasing memory, closing network connections, and releasing any file handles associated with the process. But sometimes, you may want program-driven controls to handle these cases.

Failures in process execution can broadly be classified into two types – unrecoverable errors and recoverable errors. When a process encounters an unrecoverable error, there is sometimes no option but to abort the process. Let's see how to do that.

Aborting the current process

We saw how to terminate and exit from a process in the Spawning processes...

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