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

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.

Got feedback? Send it to us on Threads (https://threads.net/@metatechpod), Twitter (https://twitter.com/metatechpod), Instagram (https://instagram.com/metatechpod) and don't forget to follow our host @passy (https://twitter.com/passy, https://mastodon.social/@passy, and https://threads.net/@passy_). Fancy working with us? Check out https://www.metacareers.com/.

Links

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

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Avsnitt(94)

BONUS: Send Us Your Questions About Engineering at Meta

BONUS: Send Us Your Questions About Engineering at Meta

Pascal is going on Recharge for August so there will be no regular interview episode. However, we want to hear your questions for our mailbag episode. Send them to us on Instagram (https://www.instagr...

29 Juli 1min

87: Everything is Power: Battery Life Engineering for AI Glasses

87: Everything is Power: Battery Life Engineering for AI Glasses

What changes for you as a developer when the device moves from your pocket to your face? The battery shrinks by an order of magnitude, the thermal budget is whatever won't make your nose uncomfortable...

13 Juli 41min

86: A Hard Cell: Engineering Ultra-Narrow Batteries for AI Glasses

86: A Hard Cell: Engineering Ultra-Narrow Batteries for AI Glasses

Your smart glasses run all day on a battery narrower than your pinky finger and building it required reinventing how batteries are made. In this episode, Pascal talks to Karthik and Myuran, the engine...

9 Juni 42min

85: Reel Friends: Building Social Discovery that Scales to Billions

85: Reel Friends: Building Social Discovery that Scales to Billions

You've probably spotted those little circles of your friends' faces popping up on Facebook Reels. They look simple enough, but building them was a proper engineering challenge. In this episode, Pascal...

8 Maj 38min

84: Trust But Canary: Configuration Safety at Scale

84: Trust But Canary: Configuration Safety at Scale

Have you ever wondered how Meta makes config rollouts safe at scale? In this episode, Pascal sits down with Ishwari and Joe to discuss Meta's approach for propagating changes across services in second...

2 Apr 37min

83: Patch Me If You Can: AI Codemods for Secure-by-Default Android Apps

83: Patch Me If You Can: AI Codemods for Secure-by-Default Android Apps

At Meta, even seemingly simple engineering tasks—like updating an API—become monumental undertakings when you're dealing with millions of lines of code and thousands of engineers, especially if the ch...

27 Feb 47min

82: CSS at Scale with StyleX

82: CSS at Scale with StyleX

It's not just Not Invented Here Syndrome. Some technologies like CSS simply don't scale if you're building some of the largest websites on the planet with thousands of engineers committing to the same...

8 Jan 44min

81: From Zero to Polish: Building Meta Ray-Ban Display

81: From Zero to Polish: Building Meta Ray-Ban Display

You've likely heard of Meta Ray-Ban Display by now — but what's it actually like to work on it? In this episode, Pascal talks to Kenan and Emanuel about the exciting features of Meta's First-Gen Displ...

12 Dec 202547min

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