util.py 文件源码

def hold_lock(cv, lock_path):  # pragma: no cover
    """Acquire a file lock at lock_path and wait to release it.

    :param multiprocessing.Condition cv: condition for synchronization
    :param str lock_path: path to the file lock

    """
    from certbot import lock
    if os.path.isdir(lock_path):
        my_lock = lock.lock_dir(lock_path)
    else:
        my_lock = lock.LockFile(lock_path)
    cv.acquire()
    cv.notify()
    cv.wait()
    my_lock.release()