Function fork_process

tests/fork_helpers.py:30–37

(child: Callable[[], NoReturn] | None = None)

def fork_process(child: Callable[[], NoReturn] | None = None) -> int:  # pragma: win32 no cover
    if _FORK is None:  # pragma: no cover - platform without os.fork
        msg = "os.fork is unavailable"
        raise RuntimeError(msg)
    child_pid = _FORK()
    if child_pid == 0 and child is not None:  # pragma: win32 no cover
        child()  # pragma: no cover - child coverage starts after fork returns to this frame
    return child_pid


def exit_child(status: int) -> NoReturn: