Class: Heapy::CLI

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

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.exit_on_failure? ⇒ Boolean

Returns:

  • (Boolean) 


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

def self.exit_on_failure?
  true
end

Instance Method Details

#diff(before, after, retained = nil) ⇒ Object 



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# File 'lib/heapy.rb', line 66

def diff(before, after, retained = nil)
  Diff.new(before: before, after: after, retained: retained, output_diff: options[:output_diff] || nil).call
end

#read(file_name, generation = nil) ⇒ Object 



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# File 'lib/heapy.rb', line 42

def read(file_name, generation = nil)
  if generation
    Analyzer.new(file_name).drill_down(generation, options[:lines] || 50)
  else
    Analyzer.new(file_name).analyze
  end
end

#version ⇒ Object 



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# File 'lib/heapy.rb', line 72

def version
  puts Heapy::VERSION
end

#wat ⇒ Object 



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# File 'lib/heapy.rb', line 77

def wat
  puts <<-HELP

To get a heap dump do this:

require 'objspace'
ObjectSpace.trace_object_allocations_start

# Your code here

p ObjectSpace.dump_all

# => #<File:/path/to/output/heap/dump/here.json>

This will print the file name of your heap dump.

If you prefer you can manually pass in an IO object to `ObjectSpace.dump_all`

io = File.open("/tmp/my_dump.json", "w+")
ObjectSpace.dump_all(output: io);
io.close

HELP
end