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Microsoft confirms "eliminate C and C++" plan, translate code to Rust using AI
- andsoitis 9mo agoPrevious: https://news.ycombinator.com/item?id=46360955 https://news.ycombinator.com/item?id=46360955
- markus_zhang 9mo agoIt is from a distinguished engineer, not from the executives. In fact, some in MSFT are not aligned. https://www.linkedin.com/feed/update/urn:li:activity:7407863239289729024?commentUrn=urn%3Ali%3Acomment%3A%28activity%3A7407863239289729024%2C7408236469615595520%29&dashCommentUrn=urn%3Ali%3Afsd_comment%3A%287408236469615595520%2Curn%3Ali%3Aactivity%3A7407863239289729024%29 https://www.linkedin.com/feed/update/urn:li:activity:7407863... BTW in a comment he mentioned that Rust offers concurrency safety. Can someone elaborate on the concurrency model of Rust? I completed the xv6 lock lab a few days ago and it was one of the most difficult labs. Hard to debug and easy to mess up.
- deleted 9mo ago[deleted]
- __patchbit__ 9mo agoWill Rust scale to 1 million developers all working at once in a metaverse? epic games' language in development is referenced here in this presentation https://youtu.be/VBT0j14rn5c
- whytevuhuni 9mo agoAre you sure you mean concurrency safety, and not thread safety? I think Rust's concurrency safety (e.g. async on a single thread) is mostly granted by the Pin trait [1], and the async code-gen making sure lifetimes make sense over .await points (which requires things to be either pinned across those points, or to not care about their location in memory potentially moving). Thread safety is instead given by a couple of auto-derived marker traits, called Send and Sync [2], that denote which kinds of data can be sent or shared between threads safely. This is coupled with types like Arc, Mutex, etc that can wrap data that isn't safe to share, so that the wrapped data as a whole is safe to share. It is also coupled with functions (like std::thread::spawn [3] and MPSC's send()) that have a requirement for the data to either be Sync/Send, or to take full ownership of it (which ensures there are no other active references to it). [1] https://doc.rust-lang.org/std/pin/struct.Pin.html https://doc.rust-lang.org/std/pin/struct.Pin.html [2] https://doc.rust-lang.org/std/marker/trait.Sync.html https://doc.rust-lang.org/std/marker/trait.Sync.html [3] https://doc.rust-lang.org/std/thread/fn.spawn.html https://doc.rust-lang.org/std/thread/fn.spawn.html
- markus_zhang 9mo agoThanks. I actually don't know much about concurrency/lock so I just took whatever the post said. I shall quote: Galen Hunt Author Distinguished Engineer at Microsoft 3d @Sukesh Ashok Kumar No memory safety. No concurrency safety. Of course, for a single C or C++ code base, these qualities can be achieved with extraordinary discipline and effort--and lost with just a single mistake. With Rust, can be proven by the compiler.
- whytevuhuni 9mo agoI see, most likely thread-safety then. Rust will prevent accessing data shared between threads unless you first lock a mutex, use an atomic, etc. Or rather, it gives abstractions so that higher-level types in stdlib and other libraries can prevent such access. The low-level implementation of the Mutex/etc types themselves do the same thing C and C++ do, via unsafe blocks, atomic primitives, fences, etc.
- ChrisArchitect 9mo ago[dupe] and article is out of date (other than being day late on the original story) as the LinkedIn poster updated his post walking back some of the statements. Update in the HN thread: https://news.ycombinator.com/item?id=46360955 https://news.ycombinator.com/item?id=46360955