Synnefo » snf-ganeti

from ganeti import utils

def LockedMethod(fn):

  """Synchronized object access decorator.

  This decorator is intended to protect access to an object using the

  object's own lock which is hardcoded to '_lock'.

  """

  def wrapper(self, *args, **kwargs):

    assert hasattr(self, '_lock')

    lock = self._lock

    lock.acquire()

    try:

      result = fn(self, *args, **kwargs)

    finally:

      lock.release()

    return result

  return wrapper