Simple Profiler for RubyMotion

motion-simple-profiler is a RubyMotion extension to log method runtime without adding a single line of code to original class.

Use it when you need to know how long it takes for a function to run, but you don't want to use tools like instruments.

1. gem 'motion-simple-profiler'
2. require 'motion-simple-profiler' or add to your Gemfile

class MyClass
  def long_running_task
    # ... run the task
  end
end

Profiler.profile MyClass, :long_running_task 

Running self.long_running_task will print:

MyClass#long_running_task runtime: 1.63304 s

You can modify the profiler log output by override the Profiler::ObjectExt#profile_log method.

For example:

module Profiler
  module ObjectExt
    def profile_log(clazz_name, method_name, start_time, end_time)
      puts "*** %s#%s -> %.5fs" % [clazz_name, method_name, (end_time-start_time).to_f]
    end
  end
end

Same example above will print:

*** MyClass#long_running_task -> 1.63304s

motion-simple-profiler is inspired by Ruby AOP in 12 lines of Code and NanoProfiler.

Please refer to LICENSE.