WebAssembly is also called WASM which was first introduced in the year 2017. The big technology companies behind the origin of WebAssembly are Google, Apple, Microsoft, Mozilla and W3C.
To name a few they are Image recognition, Computer-Aided Design (CAD) applications, Live video augmentation, VR and augmented reality, Music applications, Scientific visualization and simulation, Games, Image / video editing etc.
WebAssembly is a new language with binary instruction that can load and execute faster. The task stated above, can be easily done in high level languages like C, C++, Rust etc. We need a way that, the code we have in C, C++, Rust can be compiled and can use it in web browsers. The same is achievable using WebAssembly.
When the WebAssembly code is loaded inside the browser. Then, the browser takes care of converting into machine format that can be understood by the processors.
High level languages like C, C++ and Rust are compiled into binary format, that is, .wasm and text format .wat.
The source code written in C, C++ and Rust is compiled to .wasm using a compiler. You can make use of the Emscripten SDK for compiling C/C++ to .wasm.
The flow is as follows −
The Key concepts are as explained below −
A module is an object that is compiled by the browser to executable machine code. A module is said to be stateless and it can be shared between windows and web workers.
Table in WebAssembly is a typed array that is, outside WebAssembly memory and mostly has a reference to functions. It stores the memory address of the functions.