Class: StackProf::Report

Inherits:
Object
  • Object
show all
Defined in:
lib/stackprof/report.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ Report

Returns a new instance of Report.



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# File 'lib/stackprof/report.rb', line 6

def initialize(data)
  @data = data
end

Instance Attribute Details

#data ⇒ Object (readonly)

Returns the value of attribute data.



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# File 'lib/stackprof/report.rb', line 9

def data
  @data
end

Instance Method Details

#add_lines(a, b) ⇒ Object 



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# File 'lib/stackprof/report.rb', line 55

def add_lines(a, b)
  return b if a.nil?
  return a+b if a.is_a? Fixnum
  return [ a[0], a[1]+b ] if b.is_a? Fixnum
  [ a[0]+b[0], a[1]+b[1] ]
end

#files ⇒ Object 



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# File 'lib/stackprof/report.rb', line 43

def files
  @data[:files] ||= @data[:frames].inject(Hash.new) do |hash, (addr, frame)|
    if file = frame[:file] and lines = frame[:lines]
      hash[file] ||= Hash.new
      lines.each do |line, weight|
        hash[file][line] = add_lines(hash[file][line], weight)
      end
    end
    hash
  end
end

#frames(sort_by_total = false) ⇒ Object 



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# File 'lib/stackprof/report.rb', line 11

def frames(sort_by_total=false)
  Hash[ *@data[:frames].sort_by{ |iseq, stats| -stats[sort_by_total ? :total_samples : :samples] }.flatten(1) ]
end

#max_samples ⇒ Object 



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# File 'lib/stackprof/report.rb', line 39

def max_samples
  @data[:max_samples] ||= frames.max_by{ |addr, frame| frame[:samples] }.last[:samples]
end

#modeline ⇒ Object 



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# File 'lib/stackprof/report.rb', line 31

def modeline
  "#{@data[:mode]}(#{@data[:interval]})"
end

#normalized_frames ⇒ Object 



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# File 'lib/stackprof/report.rb', line 15

def normalized_frames
  id2hash = {}
  @data[:frames].each do |frame, info|
    id2hash[frame.to_s] = info[:hash] = Digest::MD5.hexdigest("#{info[:name]}#{info[:file]}#{info[:line]}")
  end
  @data[:frames].inject(Hash.new) do |hash, (frame, info)|
    info = hash[id2hash[frame.to_s]] = info.dup
    info[:edges] = info[:edges].inject(Hash.new){ |edges, (edge, weight)| edges[id2hash[edge.to_s]] = weight; edges } if info[:edges]
    hash
  end
end

#overall_samples ⇒ Object 



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# File 'lib/stackprof/report.rb', line 35

def overall_samples
  @data[:samples]
end

#print_callgrind(f = STDOUT) ⇒ Object 



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# File 'lib/stackprof/report.rb', line 121

def print_callgrind(f = STDOUT)
  f.puts "version: 1"
  f.puts "creator: stackprof"
  f.puts "pid: 0"
  f.puts "cmd: ruby"
  f.puts "part: 1"
  f.puts "desc: mode: #{modeline}"
  f.puts "desc: missed: #{@data[:missed_samples]})"
  f.puts "positions: line"
  f.puts "events: Instructions"
  f.puts "summary: #{@data[:samples]}"

  list = frames
  list.each do |addr, frame|
    f.puts "fl=#{frame[:file]}"
    f.puts "fn=#{frame[:name]}"
    frame[:lines].each do |line, weight|
      f.puts "#{line} #{weight.is_a?(Array) ? weight[1] : weight}"
    end if frame[:lines]
    frame[:edges].each do |edge, weight|
      oframe = list[edge.to_s]
      f.puts "cfl=#{oframe[:file]}" unless oframe[:file] == frame[:file]
      f.puts "cfn=#{oframe[:name]}"
      f.puts "calls=#{weight} #{frame[:line] || 0}\n#{oframe[:line] || 0} #{weight}"
    end if frame[:edges]
    f.puts
  end

  f.puts "totals: #{@data[:samples]}"
end

#print_debug ⇒ Object 



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# File 'lib/stackprof/report.rb', line 62

def print_debug
  pp @data
end

#print_file(filter, f = STDOUT) ⇒ Object 



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# File 'lib/stackprof/report.rb', line 195

def print_file(filter, f = STDOUT)
  filter = /#{Regexp.escape filter}/ unless Regexp === filter
  list = files
  list.select!{ |name, lines| name =~ filter }
  list.sort_by{ |file, vals| -vals.values.inject(0){ |sum, n| sum + (n.is_a?(Array) ? n[1] : n) } }.each do |file, lines|
    source_display(f, file, lines)
  end
end

#print_files(sort_by_total = false, limit = nil, f = STDOUT) ⇒ Object 



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# File 'lib/stackprof/report.rb', line 185

def print_files(sort_by_total=false, limit=nil, f = STDOUT)
  list = files.map{ |file, vals| [file, vals.values.inject([0,0]){ |sum, n| add_lines(sum, n) }] }
  list = list.sort_by{ |file, samples| -samples[1] }
  list = list.first(limit) if limit
  list.each do |file, vals|
    total_samples, samples = *vals
    f.printf "% 5d  (%2.1f%%) / % 5d  (%2.1f%%) %s\n", total_samples, (100.0*total_samples/overall_samples), samples, (100.0*samples/overall_samples), file
  end
end

#print_graphviz(filter = nil, f = STDOUT) ⇒ Object 



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# File 'lib/stackprof/report.rb', line 66

def print_graphviz(filter = nil, f = STDOUT)
  if filter
    mark_stack = []
    list = frames
    list.each{ |addr, frame| mark_stack << addr if frame[:name] =~ filter }
    while addr = mark_stack.pop
      frame = list[addr]
      unless frame[:marked]
        $stderr.puts frame[:edges].inspect
        mark_stack += frame[:edges].map{ |addr, weight| addr.to_s if list[addr.to_s][:total_samples] <= weight*1.2 }.compact if frame[:edges]
        frame[:marked] = true
      end
    end
    list = list.select{ |addr, frame| frame[:marked] }
    list.each{ |addr, frame| frame[:edges] && frame[:edges].delete_if{ |k,v| list[k.to_s].nil? } }
    list
  else
    list = frames
  end

  f.puts "digraph profile {"
  list.each do |frame, info|
    call, total = info.values_at(:samples, :total_samples)
    sample = ''
    sample << "#{call} (%2.1f%%)\\rof " % (call*100.0/overall_samples) if call < total
    sample << "#{total} (%2.1f%%)\\r" % (total*100.0/overall_samples)
    fontsize = (1.0 * call / max_samples) * 28 + 10
    size = (1.0 * total / overall_samples) * 2.0 + 0.5

    f.puts "  #{frame} [size=#{size}] [fontsize=#{fontsize}] [penwidth=\"#{size}\"] [shape=box] [label=\"#{info[:name]}\\n#{sample}\"];"
    if edges = info[:edges]
      edges.each do |edge, weight|
        size = (1.0 * weight / overall_samples) * 2.0 + 0.5
        f.puts "  #{frame} -> #{edge} [label=\"#{weight}\"] [weight=\"#{weight}\"] [penwidth=\"#{size}\"];"
      end
    end
  end
  f.puts "}"
end

#print_method(name, f = STDOUT) ⇒ Object 



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# File 'lib/stackprof/report.rb', line 152

def print_method(name, f = STDOUT)
  name = /#{Regexp.escape name}/ unless Regexp === name
  frames.each do |frame, info|
    next unless info[:name] =~ name
    file, line = info.values_at(:file, :line)
    line ||= 1

    lines = info[:lines]
    maxline = lines ? lines.keys.max : line + 5
    f.printf "%s (%s:%d)\n", info[:name], file, line
    f.printf "  samples: % 5d self (%2.1f%%)  /  % 5d total (%2.1f%%)\n", info[:samples], 100.0*info[:samples]/overall_samples, info[:total_samples], 100.0*info[:total_samples]/overall_samples

    if (callers = data[:frames].map{ |id, other| [other[:name], other[:edges][frame]] if other[:edges] && other[:edges].include?(frame) }.compact).any?
      f.puts "  callers:"
      callers = callers.sort_by(&:last).reverse
      callers.each do |name, weight|
        f.printf "   % 5d  (% 8s)  %s\n", weight, "%3.1f%%" % (100.0*weight/info[:total_samples]), name
      end
    end

    if callees = info[:edges]
      f.printf "  callees (%d total):\n", info[:total_samples]-info[:samples]
      callees = callees.map{ |k, weight| [data[:frames][k][:name], weight] }
      callees.each do |name, weight|
        f.printf "   % 5d  (% 8s)  %s\n", weight, "%3.1f%%" % (100.0*weight/(info[:total_samples]-info[:samples])), name
      end
    end

    f.puts "  code:"
    source_display(f, file, lines, line-1..maxline)
  end
end

#print_text(sort_by_total = false, limit = nil, f = STDOUT) ⇒ Object 



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# File 'lib/stackprof/report.rb', line 106

def print_text(sort_by_total=false, limit=nil, f = STDOUT)
  f.puts "=================================="
  f.printf "  Mode: #{modeline}\n"
  f.printf "  Samples: #{@data[:samples]} (%.2f%% miss rate)\n", 100.0*@data[:missed_samples]/(@data[:missed_samples]+@data[:samples])
  f.printf "  GC: #{@data[:gc_samples]} (%.2f%%)\n", 100.0*@data[:gc_samples]/@data[:samples]
  f.puts "=================================="
  f.printf "% 10s    (pct)  % 10s    (pct)     FRAME\n" % ["TOTAL", "SAMPLES"]
  list = frames(sort_by_total)
  list = list.first(limit) if limit
  list.each do |frame, info|
    call, total = info.values_at(:samples, :total_samples)
    f.printf "% 10d % 8s  % 10d % 8s     %s\n", total, "(%2.1f%%)" % (total*100.0/overall_samples), call, "(%2.1f%%)" % (call*100.0/overall_samples), info[:name]
  end
end

#version ⇒ Object 



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# File 'lib/stackprof/report.rb', line 27

def version
  @data[:version]
end