Class: Speedtest::Ring

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

Instance Method Summary collapse

Constructor Details

#initialize(size) ⇒ Ring

Returns a new instance of Ring.

Raises:

  • (ArgumentError) 


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# File 'lib/speedtest/ring.rb', line 5

def initialize(size)
  raise ArgumentError, 'size cannot be 0' if size == 0

  @size = size
  @arr = Array.new(size)
  @num_free = @size

  @append_pos = 0
  @pop_pos = 0
end

Instance Method Details

#append(elt) ⇒ Object

Raises:



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# File 'lib/speedtest/ring.rb', line 16

def append(elt)
  raise FullRing unless num_free > 0

  @arr[append_pos] = elt

  @num_free -= 1
  @append_pos += 1
end

#pop ⇒ Object 



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# File 'lib/speedtest/ring.rb', line 25

def pop
  return nil unless num_busy > 0

  value = @arr[pop_pos]
  @arr[pop_pos] = nil

  @num_free += 1
  @pop_pos += 1

  return value
end