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WebAssembly Memory Management Patterns and Examples

This repository explores memory management approaches in WebAssembly (Wasm) and Emscripten, focusing on convenience and minimal code in both C++ code compiled to WebAssembly and TypeScript.

Table of Contents

Introduction

The Emscripten SDK provides a rich set of tools for building, optimizing, and troubleshooting WebAssembly modules using C++. This repository demonstrates modern patterns for memory and resource management, focusing on interoperability between C++ and JavaScript. It also includes an example of using Clang’s AddressSanitizer to detect memory leaks and memory access errors. The full article is available at [].

Memory Management Topics Illustrated

  • Configuring AddressSanitizer
  • Returning data by value vs. by reference using Embind
  • Taking advantage of the using clause for RAII-style automatic disposal
  • Implementing scope guards and Go-style defer logic
  • Handling JavaScript callbacks with exclusive memory ownership in WebAssembly

Setup and Usage

  1. Install Emscripten: Follow the official guide.
  2. Build examples: Run npm run build.
  3. Test: Run npm test

Contributing

Contributions are welcome! Please open issues or pull requests for new patterns or improvements.

License

MIT License. See LICENSE file for details.