Async sequence
Generated on 10/8/2024
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The concept of async sequences and their performance in Swift was discussed in the session titled "Explore Swift performance" at WWDC 2024. In this session, it was explained that async functions are implemented by splitting them into multiple partial functions at runtime, which span the gaps between potential suspension points. This allows for efficient memory allocation and deallocation, as async tasks hold onto slabs of memory, which can be allocated and deallocated quickly compared to traditional methods like malloc.
For more details on async functions, you can refer to the chapter on "Async functions" in the session Explore Swift performance (24:33).
Additionally, the session "A Swift Tour: Explore Swift’s features and design" covers the use of async/await syntax in Swift, which is used to model task suspension in code. This session provides an overview of how async functions are marked and how the await keyword is used to indicate potential suspension points. You can find more information in the chapter on "Concurrency" in the session A Swift Tour: Explore Swift’s features and design (18:33).
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