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require 'java'
require 'benchmark'
TIMES = (ARGV[0] || 5).to_i
TIMES.times do
Benchmark.bm(30) do |bm|
bm.report("control") {a = [1,2,3,4].to_java; 1_000_000.times {a}}
bm.report("java_ary[0]") {a = [1,2,3,4].to_java; 1_000_000.times {a[0]}}
bm.report("java_ary[0] = 1") {a = [1,2,3,4].to_java; 1_000_000.times {a[0] = 1}}
bm.report("java_ary[1,2]") {a = [1,2,3,4].to_java; 1_000_000.times {a[1,2]}}
bm.report("java_ary.each {|x|}") {a = [1,2,3,4].to_java; 1_000_000.times {a.each {|x|}}}
bm.report("java_ary + java_ary") {a = [1,2,3,4].to_java; 1_000_000.times {a + a}}
bm.report("java_ary.to_a") {a = [1,2,3,4].to_java; 1_000_000.times {a.to_a}}
end
end
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