printing JRuby profiler data output (examples)

jruby-profile-to-string.rb

require 'jruby/profiler'

profile_data = JRuby::Profiler.profile do
  # code to be profiled....
end

# print data in flat format to STDOUT :
profile_printer = JRuby::Profiler::FlatProfilePrinter.new(profile_data)
profile_printer.printProfile(STDOUT)

# print the data to a string in graph format :

my_output_stream = java.io.ByteArrayOutputStream.new
print_stream = java.io.PrintStream.new(my_output_stream)

profile_printer = JRuby::Profiler::GraphProfilePrinter.new(profile_data)
profile_printer.printProfile(print_stream)
result = my_output_stream.toString # Ruby String might puts to File etc.

# print the data directly to an output File in html format :

append = false
my_output_stream = java.io.FileOutputStream('/home/kares/profile.out', append)
print_stream = java.io.PrintStream.new(my_output_stream)

profile_printer = JRuby::Profiler::HtmlProfilePrinter.new(profile_data)
profile_printer.printProfile(print_stream)
my_output_stream.flush # to make sure it gets written down