WindowsBatchOperationUserdata

const WindowsBatchOperationUserdata = extern struct {
    file: windows.HANDLE,
    iosb: windows.IO_STATUS_BLOCK,

    const Erased = Io.Operation.Storage.Pending.Userdata;

    comptime {
        assert(@sizeOf(WindowsBatchOperationUserdata) <= @sizeOf(Erased));
    }

    fn toErased(userdata: *WindowsBatchOperationUserdata) *Erased {
        return @ptrCast(userdata);
    }

    fn fromErased(erased: *Erased) *WindowsBatchOperationUserdata {
        return @ptrCast(erased);
    }
}