Keynote: Ruby & JVM: A (JRuby) Love Story

on YouTube ↗29m

" summary

Adds JRuby support to a production debugger (rookout gem) by switching from a Ruby-API route that fails because JRuby lacks TracePoint ScriptCompiled to a Java route that uses a Java agent with Instrumentation API and a class-file transformer to instrument bytecode. Forces compile.mode to avoid JIT-caused pending breakpoints, parses JRuby’s odd local names like $v_... to recover meaningful locals, and delivers a working Java-based debugger capable of inspecting Java extensions used from JRuby.

AI-written summary · about

" chapters (7)

1. 0:00Introduction
2. 3:52Supporting JRuby in debugger
3. 10:34Java debugger approach
4. 16:56JRuby compilation modes
5. 21:54Debugging JRuby lessons
6. 25:45JRuby community benefits
7. 27:53Should you use JRuby?

" related talks

• 29mRuby & JVM: A (JRuby) Love StoryYarden Laifenfeld · Euruko 2022
• 01h 18mKeynote: The JourneyBruce Tate · Ruby Hoedown 2007
• 47mWhy JRuby WorksCharles Oliver Nutter, Tom Enebo · RubyConf 2012
• 25mWhy I like JRuby (and you should too)Fiona Tay · LA RubyConf 2013
• 42mRubyGems to All JVM LanguagesYoko Harada · RubyConf 2010
• 49mJRuby: Ruby for the JVMThomas E Enebo, Charles Oliver Nutter · RubyConf 2007
• 44mJRuby Hacking GuideThomas E Enebo, Charles Oliver Nutter · RubyConf 2010
• 23mWhat the hell is a JRuby?Tom Gamon · RubyConf AU 2019