Asynchronous Clean-Up (in Rust)

• async-dropper

  2 30 8.9 Rust

  🗑 async-dropper is probably the least-worst ad-hoc AysncDrop implementation you've seen so far.

In the meantime I actually wrote a create that hacks around this problem:

https://crates.io/crates/async-dropper

• may

  17 1,720 8.2 Rust

  rust stackful coroutine library

> e.g. Linux mutexes

You don't want to use blocking mutexes anyway with async.

> or Rust's Rc

This is only half true. The danger is that two `Rc` that point to the same data are in different threads. But it should be safe to move all of them at once from one thread to another, which is exactly the case if all the `Rc`s involved live inside a `Future`. The problem is that this is a non-local property that's hard to encode in the type system.

> By the way, if you wish to test uncolored async in Rust, you can find an implementation here: https://github.com/Xudong-Huang/may .

FYI that's known to be unsound due to thread locals. And more generally it doesn't seem to give much attention to safety (see for example how it allowed unsound scoped tasks, or the fact it allows doing unsafe operations in some of its macros due to wrong scoping of `unsafe` blocks).

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• zig

  816 30,631 10.0 Zig

  General-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.

  

I have never used it directly, take what I say with a grain of salt.

As far as I know at least part of the idea was to eliminate the function coloring problem by letting the compiler do some nifty compile-time deductions. This had some issues (I don't know if this is still planned, it seems like the kind of thing that should not work in practice). Additionally, there were all sorts of hard technical issues with LLVM, debugging, etc.

I recommend checking the issue tracker, eg. https://github.com/ziglang/zig/issues/6025

I personally don't understand the domain well enough at all, but honestly, I feel like (if possible) Zig should try to double down on its allocator approach.

Instead of trying to use some compile-time deduction magic explicitly pass around an "async runtime/executor" struct which you explicitly have to interact with. Why not?

• cobalt

  3 164 9.2 C++

  Coroutines for C++20 & asio (by boostorg)

  

• qcoro

  6 286 7.9 C++

  C++ Coroutines for Qt

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