33eff7c7d8
Rename src/jolt -> stdlib (the runtime-loaded layer; jolt-core stays the seed-baked layer) and update the loader / emit-image / doc paths. Drop dead code: the spike/ experiments, the duplicate clojuredocs-export.edn (json moves to tools/), the Janet-era jolt.http binding, and the orphaned persistent_vector.clj whose ns/path didn't even match. Strip porting residue from comments and docstrings across host/chez, jolt-core, stdlib, tests, and docs: internal issue ids, "Phase N" markers, and the "vs Janet" historical exposition, leaving present-tense descriptions and the real JVM-Clojure semantic contrasts. Same pass over the corpus suite labels. The seed is unchanged (docstrings/comments aren't emitted), so the self-host fixpoint and corpus are untouched. Port tools/spec_coverage.py off the dead janet probe to bin/joltc and regenerate coverage.md; drop the dead :host/janet rule from certify.clj and regenerate the conformance profile. Add docs/host-interop.md (the JVM shims and how to register your own host class from a library) and a writing-style note in CLAUDE.md. Stabilize the four racy concurrency corpus cases (future-cancel and agent send/send-off): give the future a sleeping body and the agent a slow action, so cancel reliably catches an in-flight future and deref reliably reads the pre-update snapshot. They certify deterministically now, so drop their :flaky allowlist entries and the orphaned legend.
45 lines
1.8 KiB
Clojure
45 lines
1.8 KiB
Clojure
;; mono-dispatch — protocol dispatch where every call site sees ONE record type
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;; (monomorphic). This is the regime where devirtualization and a
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;; call-site inline cache CAN fire — the megamorphic `dispatch` bench deliberately
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;; defeats them, so this is its complement: it measures how close a proven/cached
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;; monomorphic dispatch gets to a direct call. Same per-call work as `dispatch`.
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;;
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;; Portable Clojure (jolt + JVM Clojure).
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;; jolt -m mono-dispatch 20000 (JOLT_DIRECT_LINK=1 JOLT_WHOLE_PROGRAM=1)
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(ns mono-dispatch)
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(defprotocol Shape
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(area [s])
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(sides [s]))
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(defrecord Circle [r] Shape (area [_] (* (* 3.14159 r) r)) (sides [_] 0))
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;; homogeneous: every element is a Circle -> the call site is monomorphic
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(defn build-shapes [n]
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(mapv (fn [i] (->Circle (+ 1 (mod i 7)))) (range n)))
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(defn sum-area [shapes]
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(reduce (fn [acc s] (+ (+ acc (area s)) (sides s))) 0.0 shapes))
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(defn run [iters]
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(let [shapes (build-shapes 1000)]
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(loop [i 0 acc 0.0]
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(if (< i iters)
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(recur (inc i) (+ acc (sum-area shapes)))
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acc))))
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(defn -main [& args]
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(let [iters (if (seq args) (Integer/parseInt (first args)) 20000)]
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(dotimes [_ 2] (run (quot iters 4))) ; warmup
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(let [runs 3
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times (mapv (fn [_]
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(let [t0 (System/nanoTime)
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r (run iters)
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ms (/ (- (System/nanoTime) t0) 1000000.0)]
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[ms r]))
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(range runs))
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mss (mapv first times)
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mean (/ (reduce + mss) runs)]
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(println "mono-dispatch iters" iters "result" (second (first times)))
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(println "runs:" (mapv (fn [t] (/ (Math/round (* t 10.0)) 10.0)) mss))
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(println "mean:" (/ (Math/round (* mean 10.0)) 10.0) "ms"))))
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