tracepoint_method_tracing

🔍 Trace and Profile Method Calls with TracePoint

You can hook into Ruby’s execution at a low level using TracePoint, enabling you to trace method calls, returns, and line events without modifying the target code. This is useful for profiling, logging, or debugging complex gems or applications.

trace = TracePoint.new(:call, :return) do |tp|
  if tp.defined_class == MyService && tp.method_id == :perform
    if tp.event == :call
      puts "Calling MyService#perform at line #{tp.lineno}"
    else
      puts "Returned from MyService#perform with value: #{tp.return_value.inspect}"
    end
  end
end

trace.enable
MyService.new.perform
trace.disable