Class: Rack::AllocationStats::Formatters::Text

Inherits:
Base
  • Object
show all
Defined in:
lib/rack/allocation_stats/formatters/text.rb

Overview

Copyright 2013 Google Inc. All Rights Reserved. Licensed under the Apache License, Version 2.0, found in the LICENSE file.

Instance Method Summary collapse

Instance Method Details

#format ⇒ Object 



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# File 'lib/rack/allocation_stats/formatters/text.rb', line 5

def format
  file_length = @allocations.inject(0) { |length, allocation| [allocation[0][0].length , length].max }

  total_count = @tracer.stats.allocations.all.size
  bytes = @tracer.stats.allocations.bytes.all.inject { |sum, e| sum + e }
  sums = "Total: #{total_count} allocations; #{bytes} bytes\n\n"

  body = []

  if @tracer.gc_report
    gc_report = @tracer.stats.gc_profiler_report + "\n\n"
    body += [gc_report]
  end

  running_total = 0
  body + @allocations.map do |key, group|
    sourcefile = key[0]
    sourceline = key[1]
    klass      = key[2]
    my_pct     = (group.size * 1.0 / total_count) * 100
    running_total += group.size
    running_pct = (running_total * 1.0 / total_count) * 100

    # TODO add a parameter to show/hide pct
    #"%-#{file_length+4}s allocated %4d `%s` (%4.2f %4.2f)\n" % ["#{sourcefile}:#{sourceline}", group.size, klass, my_pct, running_pct]
    "%-#{file_length+4}s allocated %4d `%s`\n" % ["#{sourcefile}:#{sourceline}", group.size, klass]
  end
end