Class: RubyProf::CallTreePrinter

Inherits:
AbstractPrinter show all
Defined in:
lib/ruby-prof/call_tree_printer.rb

Overview

Generate profiling information in calltree format for use by kcachegrind and similar tools.

Instance Method Summary collapse

Methods inherited from AbstractPrinter

#initialize, #method_name, #min_percent, #print_file, #setup_options

Constructor Details

This class inherits a constructor from RubyProf::AbstractPrinter

Instance Method Details

#convert(value) ⇒ Object 



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# File 'lib/ruby-prof/call_tree_printer.rb', line 50

def convert(value)
  (value * @value_scale).round
end

#file(method) ⇒ Object 



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# File 'lib/ruby-prof/call_tree_printer.rb', line 54

def file(method)
  File.expand_path(method.source_file)
end

#name(method) ⇒ Object 



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# File 'lib/ruby-prof/call_tree_printer.rb', line 58

def name(method)
  "#{method.klass_name}::#{method.method_name}"
end

#print(output = STDOUT, options = {}) ⇒ Object 



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# File 'lib/ruby-prof/call_tree_printer.rb', line 8

def print(output = STDOUT, options = {})
  @output = output
  setup_options(options)
    
  # add a header - this information is somewhat arbitrary
  @output << "events: "
  case RubyProf.measure_mode
    when RubyProf::PROCESS_TIME
      @value_scale = RubyProf::CLOCKS_PER_SEC;
      @output << 'process_time'
    when RubyProf::WALL_TIME
      @value_scale = 1_000_000
      @output << 'wall_time'
    when RubyProf.const_defined?(:CPU_TIME) && RubyProf::CPU_TIME
      @value_scale = RubyProf.cpu_frequency
      @output << 'cpu_time'
    when RubyProf.const_defined?(:ALLOCATIONS) && RubyProf::ALLOCATIONS
      @value_scale = 1
      @output << 'allocations'
    when RubyProf.const_defined?(:MEMORY) && RubyProf::MEMORY
      @value_scale = 1
      @output << 'memory'
    when RubyProf.const_defined?(:GC_RUNS) && RubyProf::GC_RUNS
      @value_scale = 1
      @output << 'gc_runs'
    when RubyProf.const_defined?(:GC_TIME) && RubyProf::GC_TIME
      @value_scale = 1000000
      @output << 'gc_time'
    else
      raise "Unknown measure mode: #{RubyProf.measure_mode}"
  end
  @output << "\n\n"

  print_threads
end

#print_methods(thread_id, methods) ⇒ Object 



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# File 'lib/ruby-prof/call_tree_printer.rb', line 62

def print_methods(thread_id, methods)
  methods.reverse_each do |method| 
    # Print out the file and method name
    @output << "fl=#{file(method)}\n"
    @output << "fn=#{name(method)}\n"

    # Now print out the function line number and its self time
    @output << "#{method.line} #{convert(method.self_time)}\n"

    # Now print out all the children methods
    method.children.each do |callee|
      @output << "cfl=#{file(callee.target)}\n"
      @output << "cfn=#{name(callee.target)}\n"
      @output << "calls=#{callee.called} #{callee.line}\n"

      # Print out total times here!
      @output << "#{callee.line} #{convert(callee.total_time)}\n"
    end
  @output << "\n"
  end
end

#print_threads ⇒ Object 



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# File 'lib/ruby-prof/call_tree_printer.rb', line 44

def print_threads
  @result.threads.each do |thread_id, methods|
    print_methods(thread_id, methods)
  end
end