Module: Utils::Profiling Private

Defined in:
utils/profiling.rb

This module is part of a private API. This module may only be used in the Homebrew/brew repository. Third parties should avoid using this module if possible, as it may be removed or changed without warning.

Class Method Summary collapse

Class Method Details

.inject_stats!(the_module, pattern) ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'utils/profiling.rb', line 11

def self.inject_stats!(the_module, pattern)
  @injected_modules[the_module] ||= []
  injected_methods = @injected_modules.fetch(the_module)
  wrapper = Module.new
  the_module.instance_methods.grep(pattern).each do |name|
    next if injected_methods.include? name

    injected_methods << name
    wrapper.define_method(name) do |*args, &block|
      require "time"

      time = Time.now

      begin
        super(*args, &block)
      ensure
        $times[name] ||= 0
        $times[name] += Time.now - time
      end
    end
  end
  the_module.prepend(wrapper)

  return unless $times.nil?

  $times = {}
  Kernel.at_exit do
    col_width = [$times.keys.map(&:size).max.to_i + 2, 15].max
    $times.sort_by { |_method, time| time }.each do |method, time|
      $stdout.puts Kernel.format("%<method>-#{col_width}s %<time>0.4f sec", method: "#{method}:", time:)
    end
  end
end