Method: Pwrake::IdleCores#decrease

Defined in:
lib/pwrake/master/idle_cores.rb

#decrease(k, n) ⇒ Object 



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# File 'lib/pwrake/master/idle_cores.rb', line 12

def decrease(k,n)
  x = (self[k]||0) - n
  if x == 0
    delete(k)
  elsif x < 0
    raise "# of cores must be non-negative"
  else
    self[k] = x
  end
end