A pvec is a 32-way trie, but na-chunk-first built each block by calling
pvec-v on the full backing vector — materializing all n elements to a
flat Scheme vector — then copying the 32-wide window out of it. That made
chunk-first O(n), so walking a vector chunk-by-chunk (Clojure's real
chunked map/filter fast path) was O(n^2): a ported chunked map over 500K
elements took 39s, superlinear to ~700s at 2M.
na-chunk-size equals pv-width and blocks are 32-aligned, so a block is
exactly one trie leaf — pv-chunk-for hands it back in O(log n). Copy that
leaf directly; fall back to per-index reads for the rare window that
crosses a leaf boundary. Chunked map is now linear, ~133x faster at 500K
(293ms) and within ~2.3x of the native seq loop, which makes a
clojure-in-clojure seq tier viable.
Corpus rows pin chunk-first window contents + chunk-rest boundaries
against JVM; fixed a stale 'always false' chunked-seq? label.
(type x) was jolt's internal taxonomy keyword (:string/:set/:jolt/inst), which
breaks any library dispatching a multimethod on [(type a) (type b)] against
java/clojure.lang classes (e.g. clojure.tools.logging.test's matchers). Make the
PUBLIC clojure.core/type Clojure's (or (:type meta) (class x)).
The taxonomy keyword stays the core model: natives-meta.ss keeps jolt-type and
exposes it as __type-tag, which print-method/print-dup dispatch on (so #uuid/#regex/
records still print). The JVM mapping lives in the java host layer — host-class.ss
defines the public type next to (class …), and a jinst now reports java.util.Date
(was :jolt/inst). So the core emits the taxonomy and the java layer remaps it in one
place. unit.edn's type suite updated to the class names. make test green.
Co-authored-by: Yogthos <yogthos@gmail.com>
The host/chez directory mixed jolt's own runtime (value model, seq, reader,
vars, ns, multimethods) with the shims that emulate the JVM: java.* / javax.*
classes, clojure.lang interfaces, and the host-class registry they hang off.
Move that JVM-emulation layer into host/chez/java/ so it reads as a distinct
unit instead of being interleaved with the platform runtime.
Moved (content unchanged): host-static, host-static-methods,
host-static-classes, host-class, dot-forms, records-interop, byte-buffer,
io, io-streams, inst-time, java-time, bigdec, natives-queue, natives-str,
natives-array, math, concurrency, async, ffi.
The load paths in rt.ss/cli.ss and the build.ss runtime manifest are updated
to point at java/; the build inliner follows the (load ...) strings, so the
AOT path needs no other change. All runtime shims, no seed source touched
(the three .clj edits are doc comments), so no re-mint.
Gate green: make test (selfhost fixpoint, certify 0-new, sci 211, infer),
shakesmoke (4 apps byte-identical).
2026-06-25 18:35:44 -04:00
Renamed from host/chez/natives-array.ss (Browse further)
