call_monitor.rb

require "set"

mods = Class.ancestors +
       Method.ancestors +
       UnboundMethod.ancestors

reserved = %i[
  ==
  ===
  =~
  caller
  first
  split
]

project = %r{/jit/lib/}
$called = SortedSet.new

def exit(*)
  File.open("calls.log", "w") do |f|
    $called.each { |thing| f.puts thing.inspect }
  end
  super
end

ObjectSpace.each_object(Module) do |mod|
  next if mods.include?(mod)

  mod.instance_methods(false).each do |m_name|
    next if reserved.include?(m_name)

    method = mod.instance_method(m_name)
    next if method.source_location.to_s =~ project

    key = [mod.inspect, m_name]

    mod.module_eval do
      define_method m_name do |*args, &blk|
        file = caller.first.split(":").first
        $called.add(key) if file != __FILE__ and file =~ project

        method.bind(self).call(*args, &blk)
      end
    end

  rescue FrozenError
  end
end