Struct LruCacheOptions 

pub struct LruCacheOptions { /* private fields */ }

Implementations

impl LruCacheOptions

pub fn set_capacity(&mut self, cap: usize)

Capacity of the cache, in the same units as the charge of each entry. This is typically measured in bytes, but can be a different unit if using kDontChargeCacheMetadata.

pub fn set_num_shard_bits(&mut self, val: c_int)

Cache is sharded into 2^num_shard_bits shards, by hash of key. If < 0, a good default is chosen based on the capacity and the implementation. (Mutex-based implementations are much more reliant on many shards for parallel scalability.)

pub fn set_memory_allocator(&mut self, allocator: &MemoryAllocator)

Allocates cache block memory through allocator instead of the system allocator.

These options do not borrow the allocator. The C setter copies the shared_ptr<MemoryAllocator> out of the handle, so the allocator stays alive through the options and the caches built from them even after the MemoryAllocator here is dropped.

Trait Implementations

impl Default for LruCacheOptions

fn default() -> Self

Returns the “default value” for a type.

impl Drop for LruCacheOptions

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl Send for LruCacheOptions

impl Sync for LruCacheOptions