Crate subetha_core 

Substrate for adaptive primitives.

The four core abstractions actually consumed by the IPC stack:

• HandshakeHeader - per-instance generation counter and in-flight tracker.
• ObservationRing - TLS-local ring buffer for op observations.
• migration - dual-stack migration protocol primitives.
• Marshal - type-system contract for “this value can cross an address-space boundary byte-identically.” Stricter than Send; required by every cross-process primitive in subetha-cxc that stores typed values (e.g. SharedDeque<T>).

Plus the architecture catalog (Axis / AxisMask) for direction signatures and the cpuid helpers for CPU-feature detection.

Every adaptive primitive in subetha-pointers and subetha-cxc carries a HandshakeHeader at a known offset.

Re-exports

pub use axis_signature::Axis;

pub use axis_signature::AxisMask;

pub use axis_signature::Fusion;

pub use cpuid::has_movdir64b;

pub use cpuid::has_waitpkg;

pub use handshake::HandshakeHeader;

pub use marshal::Marshal;

pub use marshal::MarshalError;

pub use migration::Generation;

pub use migration::MigrationGuard;

pub use observation::Observation;

pub use observation::ObservationRing;

pub use observation::any_observer_armed;

pub use observation::thread_id;

Modules

axis_signature

AxisSignature - direction-signature catalog for the SubEtha design cube, spanning both the concurrent-data-structure domain (deque variants) and the exotic-pointer domain.

cpuid

Tiny CPUID feature-detection surface that adaptive primitives across the SubEtha workspace consult to gate hardware-acceleration paths.

handshake

Per-instance handshake header: generation + in-flight refcounts.

marshal

The Marshal trait - the type-system contract for “this value can cross an address-space boundary byte-identically.”

migration

Dual-stack migration protocol.

observation

TLS-local observation ring.