//! Utils crate for `db`.

/// Returns the default page size that can be used in this OS.
pub(crate) fn default_page_size() -> usize {
    let os_page_size = page_size::get();

    // source: https://gitflic.ru/project/erthink/libmdbx/blob?file=mdbx.h#line-num-821
    let libmdbx_max_page_size = 0x10000;

    // May lead to errors if it's reduced further because of the potential size of the
    // data.
    let min_page_size = 4096;

    os_page_size.clamp(min_page_size, libmdbx_max_page_size)
}