Module kernels 

Session-scoped registry for optimizer kernels.

ArrayKernels stores function pointers that participate in array optimization and execution without adding rules or kernels to an encoding vtable. The optimizer consults it for parent-reduce rewrites before the child encoding’s static PARENT_RULES, and the executor consults it for parent execution. A registered function can therefore add support for an extension encoding or take precedence over a built-in rule. When several functions are registered for the same key and kind, they are tried in registration order until one applies.

Kernel entries are addressed by (outer_id, child_id). For parent-reduce and execute-parent kernels, outer_id is the id returned by the parent array’s encoding_id() and child_id is the child array’s encoding_id(). For ScalarFn parents, the parent id is the scalar function id.

Because registered functions have different signatures for each kernel kind, the registry maintains one storage map per function type rather than a single type-erased map.

KernelSession is the session variable that owns this registry. Its Default implementation installs vortex-array’s built-in parent-reduce and execute-parent kernels, so a session built with KernelSession participates in the same optimizations and fused execution as the built-in encodings.

Structs

ArrayKernels

Session-scoped registry of optimizer kernel functions.

KernelSession

Session-scoped holder for the optimizer kernel registry.

Traits

ArrayKernelsExt

Extension trait for accessing the optimizer kernel registry from a VortexSession.

DynExecuteParentKernel

Type-erased execute-parent kernel stored in the session registry.

Type Aliases

ExecuteParentFn

Function pointer for a plugin-provided parent execution.

ReduceParentFn

Function pointer for a plugin-provided parent-reduce rewrite.