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0 pointssunshowers1y ago0 comments

The problem with writing a browser in C# or Java is that neither of them can provide anywhere close to the level of thread safety that Rust does.

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chii1y ago

both java and c# has thread safety primitives that are also pretty easy to use. E.g., the java concurrency package.

Yoric1y ago

Having done concurrency in Java and Rust, my experience is that Rust's concurrency primitives are an order of magnitude better than Java's. I haven't tested C#'s.

om81y ago

The cool thing about rust is that it forces you to use thread safety primitives. It's called fearless concurrency

sunshowersOP1y ago

No, that's not what I'm talking about. C# and Java have nothing like the Send and Sync traits, and they don't have & and &mut.

neonsunset1y ago

C# doesn't have Send and Sync that is true. It frequently does not need either because it uses GC instead of affine types for automatic memory management. Synchronization is indeed "just don't write bugs", where Rust offers a massive upgrade, but .NET CoreCLR's memory model is more strict than C one, like object reference assignment having release semantics, so quite a few footguns are luckily avoided: https://github.com/dotnet/runtime/blob/main/docs/design/spec...

'&' and '&mut', however, are your 'ref readonly' and 'ref' respectively.

sunshowersOP1y ago

Is there anything in C# which ensures what Rust does statically, that you must acquire a lock to access data protected by a mutex? Rust also has MutexGuard not be sendable i.e the mutex won't be released on a different thread from which it is acquired.

With traditional mutex APIs it's just far too easy to get it wrong. I think you just have to structure your thread-related APIs to be misuse resistant. As humans we're just not good enough at not making mistakes.

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j / k navigate · click thread line to collapse

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chii1y ago

both java and c# has thread safety primitives that are also pretty easy to use. E.g., the java concurrency package.

Yoric1y ago

Having done concurrency in Java and Rust, my experience is that Rust's concurrency primitives are an order of magnitude better than Java's. I haven't tested C#'s.

om81y ago

The cool thing about rust is that it forces you to use thread safety primitives. It's called fearless concurrency

sunshowersOP1y ago

No, that's not what I'm talking about. C# and Java have nothing like the Send and Sync traits, and they don't have & and &mut.

neonsunset1y ago

'&' and '&mut', however, are your 'ref readonly' and 'ref' respectively.

sunshowersOP1y ago

1 more reply

j / k navigate · click thread line to collapse