Class: RubyProf::SpeedscopePrinter

Inherits:
AbstractPrinter
  • Object
show all
Defined in:
lib/ruby-prof-speedscope.rb

Instance Method Summary collapse

Instance Method Details



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# File 'lib/ruby-prof-speedscope.rb', line 64

def print_call_tree(call_tree, frames, start_time, root = false)
  @output << <<~BEGINEVENT
    {
      "type": "O",
      "frame": #{frames[call_tree.target.object_id]},
      "at": #{JSON.dump(start_time)}
    },
  BEGINEVENT

  original_start_time = start_time
  start_time += call_tree.self_time
  call_tree.children.each do |child_tree|
    next if child_tree.total_time < 0
    print_call_tree(child_tree, frames, start_time)
    start_time += child_tree.total_time
  end

  @output << <<~CLOSEEVENT
    {
      "type": "C",
      "frame": #{frames[call_tree.target.object_id]},
      "at": #{JSON.dump(original_start_time + call_tree.total_time)}
    }#{root ? "" : ","}
  CLOSEEVENT
end

#print_threads ⇒ Object 



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# File 'lib/ruby-prof-speedscope.rb', line 5

def print_threads
  profiles = []
  @output << <<~HEADER
  {
    "$schema": "https://www.speedscope.app/file-format-schema.json",
    "exporter": "ruby-prof-speedscope",
    "shared": {
      "frames": [
  HEADER

  frames = {}
  frame_index = 0
  @result.threads.each do |thread|
    thread.methods.each_with_index do |method, idx|
      next if frames.has_key?(method.object_id)
      name = "#{method.klass_name}##{method.method_name}"
      name += " *recursive*" if method.recursive?
      @output << <<~FRAME
        {
          "name": "#{name}",
          "file": "#{method.source_file}",
          "line": "#{method.line}"
        },
      FRAME
      frames[method.object_id] = frame_index
      frame_index += 1
    end
  end

  @output << <<~FRAMES
    {"name": "dummy_trailing_comma"}
    ]
    },
    "profiles": [
  FRAMES

  @result.threads.each_with_index do |thread, idx|
    @output << <<~PROFILES
      {
        "type": "evented",
        "name": "Thread: #{thread.id}, Fiber: #{thread.fiber_id}",
        "unit": "seconds",
        "startValue": 0,
        "endValue": #{JSON.dump(thread.call_tree.measurement.total_time)},
        "events": [
    PROFILES
    print_call_tree(thread.call_tree, frames, 0.0, true)
    @output << <<~PROFILES
      ]
      }#{idx < @result.threads.length - 1 ? "," : ""}
    PROFILES
  end

  @output << <<~ENDING
    ]
    }
  ENDING
end