* benchmark/memory_wrapper.rb: use respond_to? because
member? does not work well.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54062 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
use `--measure-target=[target]'.
Now, we can use the following targets:
* real (default): real time which returns process time in sec.
* peak: peak memory usage (physical memory) in bytes.
* size: last memory usage (physical memory) in bytes.
* benchmark/memory_wrapper.rb: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54060 b2dd03c8-39d4-4d8f-98ff-823fe69b080e