Synnefo » snf-ganeti » ganeti-local

def ParseMultiCpuMask(cpu_mask):

  """Parse a multiple CPU mask definition and return the list of CPU IDs.

  CPU mask format: colon-separated list of comma-separated list of CPU IDs

  or dash-separated ID ranges, with optional "all" as CPU value

  Example: "0-2,5:all:1,5,6:2" -> [ [ 0,1,2,5 ], [ -1 ], [ 1, 5, 6 ], [ 2 ] ]

  @type cpu_mask: str

  @param cpu_mask: multiple CPU mask definition

  @rtype: list of lists of int

  @return: list of lists of CPU IDs

  """

  if not cpu_mask:

    return []

  cpu_list = []

  for range_def in cpu_mask.split(constants.CPU_PINNING_SEP):

    if range_def == constants.CPU_PINNING_ALL:

      cpu_list.append([constants.CPU_PINNING_ALL_VAL, ])

    else:

      # Uniquify and sort the list before adding

      cpu_list.append(sorted(set(ParseCpuMask(range_def))))

  return cpu_list