Struct FilterFn

pub struct FilterFn { /* private fields */ }

This struct gives an interface to filter methods

Implementations

impl FilterFn

pub fn new() -> Self

Loads a cpu specific optimized implementation of a split block bloom filter. Doesn’t allocate any memory.

pub unsafe fn contains( &self, buf: *const u8, num_buckets: usize, hash: u64, ) -> bool

Check if filter bits in buf contain hash.

Safety

Caller should make sure the buffer is aligned to ALIGNMENT bytes. The buffer should have a size of at least num_buckets * BUCKET_SIZE. num_buckets has to be bigger than zero.

pub unsafe fn insert(&self, buf: *mut u8, num_buckets: usize, hash: u64) -> bool

Insert hash into the filter bits inside buf. Returns true if hash was already in the filter bits inside buf.

Safety

Caller should make sure the buffer is aligned to ALIGNMENT bytes. The buffer should have a size of at least num_buckets * BUCKET_SIZE. num_buckets has to be bigger than zero.

pub fn which(&self) -> &'static str

Returns a string indicating which internal filter implementation is being used

Trait Implementations

impl Default for FilterFn

fn default() -> Self

Returns the “default value” for a type.