Class: HeapInspect::CLI

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

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/heap_inspect.rb', line 8

def initialize(argv)
  @cmd    = argv.shift
  @file   = argv.shift
  @number = argv.shift
  @args   = argv
end

Instance Method Details

#help ⇒ Object 



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# File 'lib/heap_inspect.rb', line 15

def help
  puts <<-HALP
$ heap_inspect read <file|command> <number>

When run with only a file, it will output the generation and count pairs:

  $ heap_inspect read tmp/2015-09-30-heap.dump
Generation:  0 object count: 209191
Generation: 14 object count: 407
Generation: 15 object count: 638
Generation: 16 object count: 748
Generation: 17 object count: 1023
Generation: 18 object count: 805

When run with a file and a number it will output detailed information for that
generation:

  $ heap_inspect read tmp/2015-09-30-heap.dump 17

Analyzing Heap (Generation: 17)
-------------------------------

allocated by memory (in bytes)
==============================
/Users/richardschneeman/Documents/projects/codetriage/app/views/layouts/application.html.slim:1 (Memory: 377065, Count: 1 )
/Users/richardschneeman/.gem/ruby/2.2.3/gems/actionview-4.2.3/lib/action_view/template.rb:296 (Memory: 35814, Count: 67 )
/Users/richardschneeman/.gem/ruby/2.2.3/gems/activerecord-4.2.3/lib/active_record/attribute.rb:5 (Memory: 30672, Count: 426 )

HALP
end

#run ⇒ Object 



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# File 'lib/heap_inspect.rb', line 46

def run

  case @cmd
  when "--help"
    help
  when nil
    help
  when "read"
    if @number
      Analyzer.new(@file).drill_down(@number)
    else
      Analyzer.new(@file).analyze
    end
  else
    help
  end
end