jruby-graph-test.rb

`curl -OL https://repo1.maven.org/maven2/org/jruby/jruby-dist/9.3.3.0/jruby-dist-9.3.3.0-bin.tar.gz` unless File.exist?('jruby-dist-9.3.3.0-bin.tar.gz')
`tar -zxf jruby-dist-9.3.3.0-bin.tar.gz` unless Dir.exist?('jruby-9.3.3.0')

`curl -OL https://github.com/graalvm/graalvm-ce-builds/releases/download/vm-22.0.0.2/graalvm-ce-java17-darwin-amd64-22.0.0.2.tar.gz` unless File.exist?('graalvm-ce-java17-darwin-amd64-22.0.0.2.tar.gz')
`tar -zxf graalvm-ce-java17-darwin-amd64-22.0.0.2.tar.gz` unless Dir.exist?('graalvm-ce-java17-22.0.0.2')

`gem install seafoam`

IO.popen({'JAVA_HOME' => 'graalvm-ce-java17-22.0.0.2/Contents/Home'}, ['jruby-9.3.3.0/bin/jruby', '-J-XX:CompileOnly=DashE::RUBY$method$foo$1', '-J-XX:+PrintCompilation', '-J-Dgraal.Dump=', '-e', 'def foo(a, b); a + b; end; loop { foo(rand(100), rand(100)) }']) do |pipe|
  puts 'Running...'
  pipe.each_line do |line|
    if line =~ /\s+\d+\s+\d+\s+4\s+DashE::RUBY\$method\$foo\$1 \(\d+ bytes\)/
      sleep 3
      puts 'Killing...'
      Process.kill 9, pipe.pid
      sleep 3
      puts 'Joining...'
      Process.wait pipe.pid
    end
  end
end

graph = Dir.glob('graal_dumps/*/*.bgv').to_a.sort.last

# system 'seafoam', "#{graph}:2", 'render'    install Graphviz and use this to see what the graph is
system 'seafoam', "#{graph}:2", 'describe'

# 10 nodes, calls, linear