ruby‑trace Low‑Level Tracer for Ruby

This post announces and describes ruby-trace, a Frida-based tracer for CRuby that instruments the Ruby VM to extract method, bytecode, and native function arguments/returns and other execution metadata. It covers the tool's design (deep integration with libruby and version-specific struct handling), implementation techniques for capturing opcode results safely, and usage instructions with a demo script; it notes recent updates adding Ruby 3.1 support and expanded testing across Ruby 2.6–3.1.