Update mmap for Clojure SVN 1094

1 files changed, 0 insertions, 84 deletions

diff --git a/src/clojure/contrib/mmap/mmap.clj b/src/clojure/contrib/mmap/mmap.clj
deleted file mode 100644
index f3c82595..00000000
--- a/src/clojure/contrib/mmap/mmap.clj
+++ /dev/null
@@ -1,84 +0,0 @@
-;   Copyright (c) Chris Houser, April 2008. All rights reserved.
-;   The use and distribution terms for this software are covered by the
-;   Common Public License 1.0 (http://opensource.org/licenses/cpl.php)
-;   which can be found in the file CPL.TXT at the root of this distribution.
-;   By using this software in any fashion, you are agreeing to be bound by
-;   the terms of this license.
-;   You must not remove this notice, or any other, from this software.
-
-; Functions for memory-mapping files, plus some functions that use a
-; mmaped file for "normal" activies -- slurp, load-file, etc.
-
-(ns clojure.contrib.mmap
-    (:refer-clojure :exclude (slurp load-file))
-    (:import (java.nio ByteBuffer CharBuffer)
-             (java.io PushbackReader InputStream InputStreamReader
-                      FileInputStream)))
-
-;(set! *warn-on-reflection* true)
-
-(def READ_ONLY #^{:private true}
-  (java.nio.channels.FileChannel$MapMode/READ_ONLY))
-
-(defn mmap
-  "Memory-map the file named f.  Returns a ByteBuffer."
-  [f]
-  (let [channel (.getChannel (FileInputStream. f))]
-    (.map channel READ_ONLY 0 (.size channel))))
-
-(defn slurp
-  "Reads the file named by f and returns it as a string."
-  [#^String f]
-  (.. java.nio.charset.Charset (forName "UTF-8")
-      (newDecoder) (decode (mmap f))))
-
-(defn buffer-stream
-  "Returns an InputStream for a ByteBuffer, such as returned by mmap."
-  [#^ByteBuffer buf]
-  (proxy [InputStream] []
-    (available [] (.remaining buf))
-    (read
-      ([] (if (.hasRemaining buf) (.get buf) -1))
-      ([dst offset len] (let [actlen (min (.remaining buf) len)]
-                          (.get buf dst offset actlen)
-                          (if (< actlen 1) -1 actlen))))))
-
-(defn load-file [f]
-  "Like clojure.lang/load-file, but uses mmap internally."
-  (load (PushbackReader. (InputStreamReader. (buffer-stream (mmap f))))))
-
-
-(comment
-
-(alias 'mmap 'clojure.contrib.mmap)
-
-;---
-; zip_filter.clj is 95KB
-(def tf "/home/chouser/build/clojure/src/clj/clojure/boot.clj")
-(println "\nload-file" tf)
-(time (dotimes _ 5 (clojure/load-file tf))) ; 2595.672561 msecs
-(time (dotimes _ 5 (mmap/load-file tf)))    ; 2323.142295 msecs
-
-;---
-; kern.log.0 is 961KB
-(def tf "/var/log/kern.log.0")
-(println "\nslurp" tf)
-(time (dotimes _ 10 (.length (clojure/slurp tf)))) ; 815.068747 msecs
-(time (dotimes _ 10 (.length (mmap/slurp tf))))    ; 141.090915 msecs
-
-;---
-; kern.log.0 is 961KB
-(def tf "/var/log/kern.log.0")
-(println "\nregex slurp large" tf)
-(time (dotimes _ 10 (count (re-seq #"EXT3.*" (clojure/slurp tf))))) ; 889
-(time (dotimes _ 10 (count (re-seq #"EXT3.*" (mmap/slurp tf)))))    ; 140
-
-;---
-; mmap.clj is about 3.1KB
-(def tf "/home/chouser/proj/clojure-contrib/src/clojure/contrib/mmap/mmap.clj")
-(println "\nregex slurp small" tf)
-
-(time (dotimes _ 1000 (count (re-seq #"defn \\S*" (clojure/slurp tf))))) ; 318
-(time (dotimes _ 1000 (count (re-seq #"defn \\S*" (mmap/slurp tf)))))    ; 118
-
-)