tracepoint_execution_tracing

🕵️‍♂️ Instrumenting Classes with TracePoint

Use TracePoint to hook into Ruby’s interpreter events, tracing method calls, class definitions, or exceptions. This is invaluable for deep debugging, profiling, or implementing complex runtime checks.

trace = TracePoint.new(:call, :return) do |tp|
  if tp.defined_class == SlowService
    puts "#{tp.event} #{tp.method_id} at #{tp.path}:#{tp.lineno}"
  end
end
trace.enable

SlowService.new.process
trace.disable

Be mindful of performance impact and scope your tracing to specific classes or events.