Browsers in D

[Adam D Ruppe]

On Wednesday, 20 December 2023 at 06:29:30 UTC, Hors wrote:
> Rust is better choice than D if you have to run code from 
> untrusted resources (html, javascript, webassembly...) it's 
> safer, plus faster.

That's not how it actually works in any of the browsers though. 
The code that implements those things is pretty universally C++, 
and the sandbox is provided through operating system resources 
instead of language features.

In the blog example program, you saw that there must be a 
`Wv2App` (or `CefApp`) declared in main before doing anything 
else. That object might appear to do nothing, but it actually 
encapsulates a key part of the security sandboxing of the newer 
browser: that's responsible for spawning the worker processes for 
different jobs on different domains.

This is also why there's so much message passing in the 
implementations - they can't see each other's memory directly!