Method new_rounded_up

crates/wasmtime/src/runtime/vm/byte_count.rs:48–55

Creates a new `HostAlignedByteCount`, rounding up to the nearest page. Returns an error if `bytes + page_size - 1` overflows.

(bytes: usize)

    ///
    /// Returns an error if `bytes + page_size - 1` overflows.
    pub fn new_rounded_up(bytes: usize) -> Result<Self, ByteCountOutOfBounds> {
        let page_size = host_page_size();
        debug_assert!(page_size.is_power_of_two());
        match bytes.checked_add(page_size - 1) {
            Some(v) => Ok(Self(v & !(page_size - 1))),
            None => Err(ByteCountOutOfBounds(ByteCountOutOfBoundsKind::RoundUp)),
        }
    }

    /// Creates a new `HostAlignedByteCount` from a `u64`, rounding up to the nearest page.
    ///