Class: Bluepill::ProcessConditions::MemUsage

Inherits:
ProcessCondition show all
Defined in:
lib/bluepill/process_conditions/mem_usage.rb

Constant Summary collapse

MB = 
(1024**2).freeze
FORMAT_STR = 
'%d%s'.freeze
MB_LABEL = 
'MB'.freeze
KB_LABEL = 
'KB'.freeze

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ MemUsage

Returns a new instance of MemUsage.



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# File 'lib/bluepill/process_conditions/mem_usage.rb', line 9

def initialize(options = {})
  @below = options[:below]
end

Instance Method Details

#check(value) ⇒ Object 



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# File 'lib/bluepill/process_conditions/mem_usage.rb', line 18

def check(value)
  value.kilobytes < @below
rescue
  true
end

#format_value(value) ⇒ Object 



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# File 'lib/bluepill/process_conditions/mem_usage.rb', line 24

def format_value(value)
  if value.kilobytes >= MB
    format(FORMAT_STR, (value / 1024).round, MB_LABEL)
  else
    format(FORMAT_STR, value, KB_LABEL)
  end
end

#run(pid, include_children) ⇒ Object 



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# File 'lib/bluepill/process_conditions/mem_usage.rb', line 13

def run(pid, include_children)
  # rss is on the 5th col
  System.memory_usage(pid, include_children).to_f
end