[macruby-changes] [MacRuby/MacRuby] e5e804: improve String#reverse performance with ascii comp...

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/MacRuby/MacRuby
  Commit: e5e8046ce0c60589f8657b11bed0a7c8040959b4
      https://github.com/MacRuby/MacRuby/commit/e5e8046ce0c60589f8657b11bed0a7c8040959b4
  Author: Watson <watson1978 at gmail.com>
  Date:   2012-09-05 (Wed, 05 Sep 2012)

  Changed paths:
    M string.c

  Log Message:
  -----------
  improve String#reverse performance with ascii compatible string

* before
     user     system      total        real
22.430000   0.420000  22.850000 ( 20.853809)

* after
    user     system      total        real
1.080000   0.000000   1.080000 (  1.089038)

Test Code:
----
require 'benchmark'

Benchmark.bm do |x|
  str = "foobarbaz" * 5000
  x.report do
    50_000.times do
      str.reverse!
    end
  end
end