WWDC24: Analyze heap memory | Apple

Dive into the basis for your app’s dynamic memory: the heap! Explore how to use Instruments and Xcode to measure, analyze, and fix common heap issues. We’ll also cover some techniques and best practices for diagnosing transient growth, persistent growth, and leaks in your app. Discuss this video on the Apple Developer Forums: https://developer.apple.com/forums/topics/developer-tools-and-services?cid=yt-a-0010 Explore related documentation, sample code, and more: The Swift Programming Language: Automatic Reference Counting: https://docs.swift.org/swift-book/documentation/the-swift-programming-language/automaticreferencecounting/ Profile and optimize your game's memory: https://developer.apple.com/videos/play/wwdc2022/10106 Detect and diagnose memory issues: https://developer.apple.com/videos/play/wwdc2021/10180 iOS Memory Deep Dive: https://developer.apple.com/videos/play/wwdc2018/416 Explore Swift performance: https://developer.apple.com/videos/play/wwdc2024/10217 Consume noncopyable types in Swift: https://developer.apple.com/videos/play/wwdc2024/10170 00:00 - Introduction 01:05 - Heap memory overview 03:45 - Tools for inspecting heap memory issues 07:40 - Transient memory growth overview 10:34 - Managing autorelease pool growth in Swift 13:57 - Persistent memory growth overview 16:00 - How the Xcode memory graph debugger works 20:15 - Reachability and ensuring memory is deallocated appropriately 21:54 - Resolving leaks of Swift closure contexts 24:13 - Leaks FAQ 26:51 - Comparing performance of weak and unowned 30:44 - Reducing reference counting overhead 32:06 - Cost of measurement 32:30 - Wrap up More Apple Developer resources: Video sessions: https://apple.co/VideoSessions Documentation: https://apple.co/DeveloperDocs Forums: https://apple.co/DeveloperForums App: https://apple.co/DeveloperApp