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Perf: optimize coll freezing via new enc/reduce-n

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- Take advantage of clojure.lang.LongRange
  - Avoid unnecessary temp `[k v]` (map entry) constructions
This commit is contained in:
Peter Taoussanis 2016-03-04 12:39:14 +07:00
parent d154ada9e4
commit 7adad2240c
2 changed files with 21 additions and 16 deletions
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2
project.clj
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@ -15,7 +15,7 @@
:dependencies
[[org.clojure/clojure "1.5.1"]
[org.clojure/tools.reader "0.10.0"]
[com.taoensso/encore "2.36.2"]
[com.taoensso/encore "2.41.0"]
[org.iq80.snappy/snappy "0.4"]
[org.tukaani/xz "1.5"]
[net.jpountz.lz4/lz4 "1.3"]]

35
src/taoensso/nippy.clj
View file

@ -19,8 +19,8 @@
IRecord ISeq]))
(if (vector? enc/encore-version)
(enc/assert-min-encore-version [2 16 0])
(enc/assert-min-encore-version 2.16))
(enc/assert-min-encore-version [2 41 0])
(enc/assert-min-encore-version 2.41))
;;;; Nippy data format
;; * 4-byte header (Nippy v2.x+) (may be disabled but incl. by default) [1]
@ -473,23 +473,28 @@
(defn read-utf8 ^String [^DataInput in] (String. (read-bytes in) "UTF-8"))
(defn read-sm-utf8 ^String [^DataInput in] (String. (read-sm-bytes in) "UTF-8"))
(defn read-coll [^DataInput in to-coll]
(enc/repeatedly-into to-coll (.readInt in) (fn [] (thaw-from-in! in))))
(defn- -read-coll [^DataInput in to-coll ^long n]
(if (and (> n 10) (enc/editable? to-coll))
(persistent!
(enc/reduce-n (fn [acc _] (conj! acc (thaw-from-in! in)))
(transient to-coll) n))
(defn read-sm-coll [^DataInput in to-coll]
(enc/repeatedly-into to-coll (.readByte in) (fn [] (thaw-from-in! in))))
(enc/reduce-n (fn [acc _] (conj acc (thaw-from-in! in))) to-coll n)))
(defn read-kvs [^DataInput in to-coll]
(enc/repeatedly-into to-coll (.readInt in)
(fn [] [(thaw-from-in! in) (thaw-from-in! in)])))
(defn- -read-kvs [^DataInput in to-coll ^long n]
(if (and (> n 10) (enc/editable? to-coll))
(persistent!
(enc/reduce-n (fn [acc _] (assoc! acc (thaw-from-in! in) (thaw-from-in! in)))
(transient to-coll) n))
(defn read-sm-kvs [^DataInput in to-coll]
(enc/repeatedly-into to-coll (.readByte in)
(fn [] [(thaw-from-in! in) (thaw-from-in! in)])))
(enc/reduce-n (fn [acc _] (assoc acc (thaw-from-in! in) (thaw-from-in! in)))
to-coll n)))
(defn read-kvs-depr1 [^DataInput in to-coll]
(enc/repeatedly-into to-coll (quot (.readInt in) 2)
(fn [] [(thaw-from-in! in) (thaw-from-in! in)])))
(defn read-coll [^DataInput in to-coll] (-read-coll in to-coll (.readInt in)))
(defn read-sm-coll [^DataInput in to-coll] (-read-coll in to-coll (.readByte in)))
(defn read-kvs [^DataInput in to-coll] (-read-kvs in to-coll (.readInt in)))
(defn read-sm-kvs [^DataInput in to-coll] (-read-kvs in to-coll (.readByte in)))
(defn read-kvs-depr1 [^DataInput in to-coll] (-read-kvs in to-coll (quot (.readInt in) 2)))
(def ^:private class-method-sig (into-array Class [IPersistentMap]))