_shell_process.py 文件源码

def _wait_and_kill(pid_to_wait, pids_to_kill):
  """ Wait for a process to finish if it exists, and then kill a list of processes.

  Args:
    pid_to_wait: the process to wait for.
    pids_to_kill: a list of processes to kill after the process of pid_to_wait finishes.
  """
  if psutil.pid_exists(pid_to_wait):
    psutil.Process(pid=pid_to_wait).wait()

  for pid_to_kill in pids_to_kill:
    if psutil.pid_exists(pid_to_kill):
      p = psutil.Process(pid=pid_to_kill)
      p.kill()