Struct hashbrown::raw::sse2::Group

pub(crate) struct Group(__m128i);

Abstraction over a group of control bytes which can be scanned in parallel.

This implementation uses a 128-bit SSE value.

Tuple Fields

0: __m128i

Implementations

impl Group

pub(crate) const WIDTH: usize = 16usize

Number of bytes in the group.

pub(crate) const fn static_empty() -> &'static [u8; 16]

Returns a full group of empty bytes, suitable for use as the initial value for an empty hash table.

This is guaranteed to be aligned to the group size.

pub(crate) unsafe fn load(ptr: *const u8) -> Self

Loads a group of bytes starting at the given address.

pub(crate) unsafe fn load_aligned(ptr: *const u8) -> Self

Loads a group of bytes starting at the given address, which must be aligned to mem::align_of::<Group>().

pub(crate) unsafe fn store_aligned(self, ptr: *mut u8)

Stores the group of bytes to the given address, which must be aligned to mem::align_of::<Group>().

pub(crate) fn match_byte(self, byte: u8) -> BitMask

Returns a BitMask indicating all bytes in the group which have the given value.

pub(crate) fn match_empty(self) -> BitMask

Returns a BitMask indicating all bytes in the group which are EMPTY.

pub(crate) fn match_empty_or_deleted(self) -> BitMask

Returns a BitMask indicating all bytes in the group which are EMPTY or DELETED.

pub(crate) fn match_full(&self) -> BitMask

Returns a BitMask indicating all bytes in the group which are full.

pub(crate) fn convert_special_to_empty_and_full_to_deleted(self) -> Self

Performs the following transformation on all bytes in the group:

• EMPTY => EMPTY
• DELETED => EMPTY
• FULL => DELETED

Trait Implementations

impl Clone for Group

fn clone(&self) -> Group

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Group