Small and fast and simple implementation of `malloc`/`free` for WASM projects
This project provides a replacement for malloc/free that are used by default when WebAssembly binary is built with Emsctipten.
Why? According to twiggy report dlmalloc is 6013 bytes long and dlfree is 1709. 7722 bytes in total. Not a lot... until it is 30%+ of the total binary size.
This implementation is much simpler and shorter: malloc is 299 bytes, free is 47 bytes, 346 bytes in total — way better!
And in the project I've created this library for it works even faster than the default one.
There are just 30 lines of code. What is the purpose of simplicity? So that you can read and understand it and modify, to make it a perfect fit for your project.
Nota bene: this is neither the simplest (and smallest), nor the fastest implementation; it is just practical.
Just add simple-alloc.cc as compilation unit. Thats it. You can even copy-paste file contents into one of your source files, e.g. "main".
TODO: explain every line of the source code