class RubyProf::DotPrinter

Generates a graphviz graph in dot format.

To use the dot printer:

result = RubyProf.profile do
  [code to profile]
end

printer = RubyProf::DotPrinter.new(result)
printer.print(STDOUT)

You can use either dot viewer such as GraphViz, or the dot command line tool to reformat the output into a wide variety of outputs:

dot -Tpng graph.dot > graph.png

Constants

CLASS_COLOR
EDGE_COLOR

Public Class Methods

new(result) click to toggle source

Creates the DotPrinter using a RubyProf::Proile.

Calls superclass method RubyProf::AbstractPrinter::new

   # File lib/ruby-prof/printers/dot_printer.rb
27 def initialize(result)
28   super(result)
29   @seen_methods = Set.new
30 end

Public Instance Methods

print(output = STDOUT, options = {}) click to toggle source

Print a graph report to the provided output.

output - Any IO object, including STDOUT or a file. The default value is STDOUT.

options - Hash of print options. See setup_options for more information.

When profiling results that cover a large number of method calls it helps to use the :min_percent option, for example:

DotPrinter.new(result).print(STDOUT, :min_percent=>5)

   # File lib/ruby-prof/printers/dot_printer.rb
45 def print(output = STDOUT, options = {})
46   @output = output
47   setup_options(options)
48 
49   puts 'digraph "Profile" {'
50   #puts "label=\"#{mode_name} >=#{min_percent}%\\nTotal: #{total_time}\";"
51   puts "labelloc=t;"
52   puts "labeljust=l;"
53   print_threads
54   puts '}'
55 end