[macruby-changes] [MacRuby/MacRuby] 48f006: improve a performance in String#index(pattern) whe...

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/MacRuby/MacRuby
  Commit: 48f006a49d5c97009f1b51e06af82e1005a41c32
      https://github.com/MacRuby/MacRuby/commit/48f006a49d5c97009f1b51e06af82e1005a41c32
  Author: Watson <watson1978 at gmail.com>
  Date:   2012-12-28 (Fri, 28 Dec 2012)

  Changed paths:
    M string.c

  Log Message:
  -----------
  improve a performance in String#index(pattern) when passed one character as pattern

* before
       user     system      total        real
index    3.190000   0.000000   3.190000 (  3.195554)

* after
       user     system      total        real
index    0.300000   0.000000   0.300000 (  0.296230)

Test Code:
----
require 'benchmark'

str = "hoge" * 10000 + "\n"

Benchmark.bm(7) do |x|
  x.report "index" do
    10000.times do
      str.index("\n")
    end
  end
end