18 lines
625 B
Clojure
18 lines
625 B
Clojure
(ns portal.bench
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#?(:cljs (:refer-clojure :exclude [simple-benchmark]))
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#?(:cljs (:require-macros portal.bench)))
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(defn now []
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#?(:clj (System/currentTimeMillis)
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:cljs (.now js/Date)))
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(defmacro simple-benchmark
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[bindings expr iterations & {:keys [print-fn] :or {print-fn 'println}}]
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(let [expr-str (pr-str expr)]
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`(let ~bindings
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(dotimes [_# ~iterations] ~expr)
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(let [start# (now)
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ret# (dotimes [_# ~iterations] ~expr)
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end# (now)
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elapsed# (- end# start#)]
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(~print-fn (str ~iterations " runs, " elapsed# " msecs, " ~expr-str))))))
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