Simple tasks on Ractors

bench.rb

Warning[:experimental] = false

$:.unshift File.join(__dir__, '.bundle/gems/benchmark-0.4.0/lib/')
require 'benchmark'
RN = ENV['RN'].to_i
raise if RN < 1
ON = (2 * 4 * 8 * 16) * 10_000
TN = ON/RN
raise({TN:TN, RN:RN, ON:ON}.inspect) if TN * RN != ON

type = ENV['T'].to_sym

case type
when :regexp
  def task
    str = 'hello world'
    TN.times{
      /(h)(e)(l)(l)(o)/ =~ str
    }
  end
when :new
  def task
    TN.times{
      ''
    }
  end
when :newary
  def task
    a = []
    TN.times{
      a = [a]
    }
  end
else
  raise
end

Benchmark.bm(10){|x|
  if RN == 1
    x.report("#{type}/#{RN}"){
      task
    }
  else
    x.report("#{type}/#{RN}"){
      rs = RN.times.map{
        Ractor.new do
          task
          :finished
        end
      }

      rs.map(&:take)
    }
  end
}

# p result