Add simple bootchart -> gnuplot shell script

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25493 a1c6a512-1295-4272-9138-f99709370657

utils/bootchart/gnuplot.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+# $Id$
+#
+# Copyright (C) 2010 by Maurus Cuelenaere
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+#
+# Invoke this as "./gnuplot.sh < logf.txt"
+
+TMP=`tempfile`
+
+awk 'BEGIN {
+    FS=","
+    i=1
+}
+
+/^BC:/ {
+    # BC:<function name>,<line number>,<elapsed ticks>
+    printf "%d\t%d\t\"%s\"\n", i, $3, substr($1, 4)
+    i=i+1
+}' > $TMP
+
+echo "plot \"$TMP\" u 1:2:3 w labels left rotate by 90 offset 0,0.5 notitle, \"$TMP\" u 1:2 w linespoints notitle" | gnuplot -persist
+
+rm $TMP