DeepCausality Parallel traits

Shared parallelism primitives for the DeepCausality workspace.

The crate carries two items.

MaybeParallel is the feature-conditional thread-safety marker used by the parallel features of deep_causality_topology and deep_causality_fft. With --features parallel the trait is a Send + Sync alias (blanket-implemented); without it the trait is vacuous, so serial builds carry no extra bounds.

scoped_map is the minimal in-house fork-join surface: an order-preserving map over a slice that fans out on std::thread::scope threads under the parallel feature (one contiguous chunk per available core) and runs inline without it. It targets few, long, data-independent tasks such as counterfactual branch fan-outs; it is not a work-stealing scheduler and adds no external dependency.

Hosting both in one Tier-0 crate guarantees a single definition: downstream crates forward their own parallel feature to deep_causality_par/parallel, and Cargo feature unification keeps every crate in a build agreeing on what the bound means.

No unsafe — the crate opts into the workspace-wide unsafe_code = "forbid" lint policy.

Contribution

Contributions are welcomed especially related to documentation, example code, and fixes. If unsure where to start, just open an issue and ask.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in deep_causality by you, shall be licensed under the MIT licence, without any additional terms or conditions.

Licence

This project is licensed under the MIT license.

Security

For details about security, please read the security policy.