We interfaced single-threaded C++ with multi-threaded Rust

5 comments

• wsx-antithesis 27 days ago
  Hi, I (Shuxian) worked with Michael on this project. Happy to answer any questions! We'll also post a followup next week on formally verifying our unsafe primitives in the style of RustBelt (https://plv.mpi-sws.org/rustbelt), if that interests you.
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  • wsx-antithesis 14 days ago
    The sequel is now up at https://antithesis.com/blog/2026/rust_formal_methods/
• pjmlp 28 days ago
  It would be more interesting if it was on how to combine C++20 co-routines with Rust async-await models.

  Combining single-threaded C++ with multi-threaded languages has been a thing for quite some time.

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  • rockwotj 27 days ago
    I have done this integrating wasmtime into a a C++ seastar.io application. I’ll have to write a post about it
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    • rockwotj 27 days ago
      https://rockwotj.com/blog/async-wasm-in-seastar/ - been meaning to write about this for a long time. Thanks for the nudge :)
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      • pjmlp 27 days ago
        Cool, very interesting, thanks for sharing with us.
  • foota 27 days ago
    Wow, I wouldn't have thought that it would be possible to do this (at least, not ergonomically, although now that you mention it I guess I don't see why not). That would be amazing to see.
• mchlgibs 27 days ago
  I'm the author.

  Thanks for the interest; I've never had a post on Hacker News before.

  I'm happy to answer any questions.
• chris_money202 28 days ago
  Pretty sure I’ve done similar, combined a Rust multi-threaded emulator with single threaded SystemC simulation
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  • iamoutoftouch 27 days ago
    do tell!
• yuryk 27 days ago
  Seems like objc2 crate uses same approach (MainThreadMarker).