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if ARGV.empty?
$stderr.puts "Usage: ./script/performance/profiler 'Person.expensive_method(10)' [times] [flat|graph|graph_html]"
exit(1)
end
# Keep the expensive require out of the profile.
$stderr.puts 'Loading Rails...'
require RAILS_ROOT + '/config/environment'
# Define a method to profile.
if ARGV[1] and ARGV[1].to_i > 1
eval "def profile_me() #{ARGV[1]}.times { #{ARGV[0]} } end"
else
eval "def profile_me() #{ARGV[0]} end"
end
# Use the ruby-prof extension if available. Fall back to stdlib profiler.
begin
begin
require "ruby-prof"
$stderr.puts 'Using the ruby-prof extension.'
RubyProf.measure_mode = RubyProf::WALL_TIME
RubyProf.start
profile_me
results = RubyProf.stop
if ARGV[2]
printer_class = RubyProf.const_get((ARGV[2] + "_printer").classify)
else
printer_class = RubyProf::FlatPrinter
end
printer = printer_class.new(results)
printer.print($stderr, 0)
rescue LoadError
require "prof"
$stderr.puts 'Using the old ruby-prof extension.'
Prof.clock_mode = Prof::GETTIMEOFDAY
Prof.start
profile_me
results = Prof.stop
require 'rubyprof_ext'
Prof.print_profile(results, $stderr)
end
rescue LoadError
require 'profiler'
$stderr.puts 'Using the standard Ruby profiler.'
Profiler__.start_profile
profile_me
Profiler__.stop_profile
Profiler__.print_profile($stderr)
end
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