system.py 文件源码

def _set_prctl_name(process_name):
  """
  Sets the prctl name, which is used by top and killall. This appears to be
  Linux specific and has the max of 15 characters.

  This is from...
  http://stackoverflow.com/questions/564695/is-there-a-way-to-change-effective-process-name-in-python/923034#923034
  """

  libc = ctypes.CDLL(ctypes.util.find_library('c'))
  name_buffer = ctypes.create_string_buffer(len(process_name) + 1)
  name_buffer.value = stem.util.str_tools._to_bytes(process_name)
  libc.prctl(PR_SET_NAME, ctypes.byref(name_buffer), 0, 0, 0)