Towards Ruby 2.0: Progress of (VM) Internals Koichi Sasada Heroku, Inc 1 The results of “My Code” Agenda • Background • Finished work - Ruby 2.0 Internal Changes – Support Module#prepend – Introducing Flonum – New set_trace_func – Controllable asynchronous interrupts – Deep changes • Remaining work - Ruby 2.0 Internal Features – Virtual machine changes • Enable “disabled-optimizing” options • Opti