Module: Peach

Defined in:
lib/peach.rb

Instance Method Summary collapse

Instance Method Details

#peach(n = nil, &b) ⇒ Object 



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# File 'lib/peach.rb', line 26

def peach(n = nil, &b)
  return [] if n == 0 or size == 0

  result = Array.new(size)

  n ||= $peach_default_threads || size
  div = (size.to_f/n).ceil

  return [] if div == 0

  threads = []
  max = size - 1
  offset = 0
  for i in (0..n-1)
    threads << Thread.new(offset - div, offset > max ? max : offset) do |lower, upper|
      for j in lower..upper
        yield(slice(j))
      end
    end
    offset += div
  end
  threads.each { |t| t.join }
  self
end

#pmap(n = nil, &b) ⇒ Object 



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# File 'lib/peach.rb', line 51

def pmap(n = nil, &b)
  return [] if n == 0

  n ||= $peach_default_threads || size
  div = (size.to_f/n).ceil

  return [] if div == 0

  result = Array.new(size)

  threads = []
  max = size - 1
  offset = div
  for i in (0..n-1)
    threads << Thread.new(offset - div, offset > max ? max : offset) do |lower, upper|
      for j in lower..upper
        result[j] = yield(slice(j))
      end
    end
    offset += div
  end
  threads.each { |t| t.join }

  result
end

#pselect(n = nil, &b) ⇒ Object 



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

def pselect(n = nil, &b)
  peach_run(:select, b, n)
end