iOS and macOS Performance Tuning: Cocoa, Cocoa Touch, Objective-C, and Swift

In iOS and macOS™ Performance Tuning, Marcel Weiher drills down to the code level to help you systematically optimize CPU, memory, I/O, graphics, and program responsiveness in any Objective-C, Cocoa, or CocoaTouch program.

This up-to-date guide focuses entirely on performance optimization for macOS and iOS. Drawing on more than 25 years of experience optimizing Apple device software, Weiher identifies concrete performance problems that can be discovered empirically via measurement. Then, based on a deep understanding of fundamental principles, he presents specific techniques for solving them.

Weiher presents insights you won’t find anywhere else, most of them applying to both macOS and iOS development. Throughout, he reveals common pitfalls and misconceptions about Apple device performance, explains the realities, and helps you reflect those realities in code that performs beautifully.

• Understand optimization principles, measurement, tools, pitfalls, and techniques
• Recognize when to carefully optimize, and when it isn’t worth your time
• Balance performance and encapsulation to create efficient object representations, communication, data access, and computation
• Avoid mistakes that slow down Objective-C programs and hinder later optimization
• Fix leaks and other problems with memory and resource management
• Address I/O issues associated with drives, networking, serialization, and SQLite
• Code graphics and UIs that don’t overwhelm limited iOS device resources
• Learn what all developers need to know about Swift performance

This book’s source code can be downloaded at github.com/mpw/iOS-macOS-performance.

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Table of Contents

Chapter 1. CPU: Principles
Chapter 2. CPU: Measurement and Tools
Chapter 3. CPU: Pitfalls and Techniques
Chapter 4. CPU Example: XML Parsing
Chapter 5. Memory: Principles
Chapter 6. Memory: Measurement and Tools
Chapter 7. Memory: Pitfalls and Techniques
Chapter 8. Memory Example: FilterStreams
Chapter 9. Swift
Chapter 10. I/O: Principles
Chapter 11. I/O: Measurement and Tools
Chapter 12. I/O: Pitfalls and Techniques
Chapter 13. I/O: Examples
Chapter 14. Graphics and UI: Principles
Chapter 15. Graphics and UI: Measurement and Tools
Chapter 16. Graphics and UI: Pitfalls and Techniques
Chapter 17. Graphics and UI: Examples