PyO3 / PyO3/pyo3

conversions and `#[pyo3(get, set)]` for atomic integers

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#4,668 4 comments 0 reactions 0 assignees View on GitHub

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Dominant language
Rust
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Description

In #4566 we ran into the fact that atomic integers don't currently work as #[pyclass] fields.

We should decide what conversions we want on these types. We can probably implement:

  • IntoPyObject and FromPyObject for owned values, because there is no atomic contention in these cases.
  • Should we implement IntoPyObject for &AtomicX ? It's not clear to me that we can always just use Relaxed ordering there.
  • We should probably specialize the way that #[pyclass(get, set)] work so that Relaxed ordering is used to write #[pyclass] fields. This is probably ok for those uses?

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing issue #4566 and the existing conversion behavior for atomic integer types. Decide which owned and reference conversions are safe, including memory ordering, and define the expected behavior for #[pyclass(get, set)] fields before implementing and testing the result.

Written by the indexing model from the issue text.

Assessment

Tech stack
python, rust
Domain
api
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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