Скачать или смотреть WASM 3.0: garbage collection, threads, and more | Andreas Rossberg | PodRocket

Andreas Rossberg unpacks WASM 3.0, covering new capabilities like garbage collection, exception handling, tail calls, and support for 64-bit addressing with multiple memories. The discussion explores deterministic profiles following relaxed sim, WebAssembly’s capability-based security model, and advances in sandboxing and module design. Andreas connects these features to practical use cases in JavaScript engines and applications like Google Sheets, then looks ahead to experimental work on threading, stack switching, and async programming models shaping the next phase of the WebAssembly ecosystem.

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Links
Website: https://people.mpi-sws.org/~rossberg
GitHub: https://github.com/rossberg

Related resources
WASM 3.0 Completed: https://webassembly.org/news/2025-09-...

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Chapters
00:00 Intro: Welcome to PodRocket + Introducing Andreas Rossberg
01:00 From WebAssembly 2.0 to 3.0 — What’s New and Why It Matters
02:40 Garbage Collection and Unlocking Managed Languages
04:00 WebAssembly as a Universal Compilation Target
05:20 Adoption Curve and Ecosystem Growth
06:20 Expanding Address Space to 64-bit — Who Needs It and Why
08:00 WebAssembly Beyond the Web: Databases, LLMs, and Portability
09:00 Lessons from the JVM and .NET — A Truly Language-Neutral Platform
10:00 Sandboxing, Imports, and WebAssembly’s Security Model
12:00 Static Analysis, Capabilities, and Reducing Attack Surfaces
13:00 Multi-Memory Support: Security, Modularity, and Tooling
15:00 Features for Toolchains vs. Language Authors
17:00 Tail Calls, Functional Languages, and Hidden Runtime Benefits
18:40 Tables: Function References, Security, and Code Indirection
21:00 How Tables Enable Safe Function Pointers and Optimization
22:00 Exception Handling — Closing a Long-Standing Gap
23:30 Efficiency, Control Flow, and Language Design Differences
25:00 Deterministic Execution Profiles and Blockchain Use Cases
27:20 SIMD, Relaxed Semantics, and Hardware Divergence
29:30 Balancing Portability, Performance, and Philosophy
31:00 What WebAssembly Should Be: Principles and Compromises
32:00 Rejecting JavaScript-Specific Features (Strings Example)
33:40 Who Drives New Proposals — Implementers and Big Users
35:00 The Role of Browser Vendors in Standardization
36:00 Early Adoption: GC, Sheets, and Real-World Deployment
38:00 The Road Ahead — Threads, Stack Switching, and Beyond
40:00 Coroutines, Async/Await, and Control Abstractions
42:00 Language Benefits of Stack Switching
44:00 What’s Next for WebAssembly: Smaller Additions and Big Goals
45:00 How to Get Involved: The WebAssembly Community Group
46:00 Where Producers and Implementers Meet (or Don’t)
47:00 Closing Thoughts and Thanks

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