63: The key to a happy Rust/C++ relationship

Aida was part of one of the first Rust teams here at Meta. One of the biggest challenges was interacting with the large amount of existing C++. With the release of cxx, safe interop between C++ and even async Rust has become a lot easier.

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Links

Aida’s talk at Rust Nation: https://youtu.be/tsEuA9S5q9Q

cxx: https://crates.io/crates/cxx

Sapling: https://sapling-scm.com/

Timestamps

Intro 0:06

Aida Intro 2:06

Rust in Meta Source Control 2:50

State of Rust at Meta 10:11

bindgen 13:25

cxx vs bindgen 17:49

async Rust and C++ 19:04

Dealing with Lifetimes 28:19

Fixing Memory Leaks 31:25

Thread safety with Send and Sync 33:48

A Magic Wand for Async Rust 39:52

Outro 43:04

Outtakes 43:50