def METHOD_NAME():
    """
    Check if seccomp is available and expected to work on this system.
    If seccomp is not available an appropriate warning is logged.
    """
    global _AVAILABLE
    # Make sure to call _load_seccomp() exactly once.
    with _LOAD_LOCK:
        if _AVAILABLE is None:
            _AVAILABLE = _load_seccomp()
        return _AVAILABLE