python multiprocessing arguments: deep copy?

from multiprocessing import Process
# c is a container
p = Process(target = f, args = (c,))
p.start()
I assume a deep copy of c is passed to function f because shallow copy would make no sense in the case of a new process (the new process doesn't have access to the data from the calling process).
But how is this deep copy defined? There is a whole set of notes in the copy.deepcopy() documentation, do all these notes apply here as well? The multiprocessing documentation says nothing...