What is a hang?

Generated on 7/31/2024

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A "hang" refers to a situation where an application becomes unresponsive, often due to issues like memory pressure or inefficient code execution. For example, during heap memory analysis, a hang can occur when the app briefly stutters or becomes unresponsive during the snapshot process. This is discussed in the session Analyze heap memory.

Relevant Sessions

  1. Analyze heap memory
  2. Xcode essentials
  3. What’s new in Xcode 16
What’s new in Xcode 16

What’s new in Xcode 16

Discover the latest productivity and performance improvements in Xcode 16. Learn about enhancements to code completion, diagnostics, and Xcode Previews. Find out more about updates in builds and explore improvements in debugging and Instruments.

Xcode essentials

Xcode essentials

Edit, debug, commit, repeat. Explore the suite of tools in Xcode that help you iterate quickly when developing apps. Discover tips and tricks to help optimize and boost your development workflow.

Analyze heap memory

Analyze heap memory

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.

Explore Swift performance

Explore Swift performance

Discover how Swift balances abstraction and performance. Learn what elements of performance to consider and how the Swift optimizer affects them. Explore the different features of Swift and how they’re implemented to further understand the tradeoffs available that can impact performance.

Bring your app’s core features to users with App Intents

Bring your app’s core features to users with App Intents

Learn the principles of the App Intents framework, like intents, entities, and queries, and how you can harness them to expose your app’s most important functionality right where people need it most. Find out how to build deep integration between your app and the many system features built on top of App Intents, including Siri, controls and widgets, Apple Pencil, Shortcuts, the Action button, and more. Get tips on how to build your App Intents integrations efficiently to create the best experiences in every surface while still sharing code and core functionality.