Method: CompTree::Driver#compute

Defined in:
lib/comp_tree/driver.rb

#compute(name, max_threads) ⇒ Object

name – unique node identifier (for example a symbol).

max_threads – maximum number of threads, or 0 to indicate no limit.

Compute the tree below name and return the result.

If a node’s computation raises an exception, the exception will be transferred to the caller of compute(). The tree will be left in a dirty state so that individual nodes may be examined. It is your responsibility to call reset() before attempting the computation again, otherwise the result will be undefined.



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# File 'lib/comp_tree/driver.rb', line 106

def compute(name, max_threads)
  begin
    max_threads = max_threads.to_int
  rescue NoMethodError
    raise TypeError, "can't convert #{max_threads.class} into Integer"
  end
  if max_threads < 0
    raise RangeError, "max threads must be nonnegative"
  end

  root = @nodes[name] or raise NoNodeError.new(name)
  if root.computed
    root.result
  elsif max_threads == 1
    root.compute_now
  else
    Algorithm.compute_parallel(root, max_threads == 0 ? nil : max_threads)
  end
end