mx.py 文件源码

def _get_new_progress_group_args():
    """
    Gets a tuple containing the `preexec_fn` and `creationflags` parameters to subprocess.Popen
    required to create a subprocess that can be killed via os.killpg without killing the
    process group of the parent process.
    """
    preexec_fn = None
    creationflags = 0
    if not is_jython():
        if get_os() == 'windows':
            creationflags = subprocess.CREATE_NEW_PROCESS_GROUP
        else:
            preexec_fn = os.setsid
    return preexec_fn, creationflags