Struct nydus::FsCacheHandler

pub struct FsCacheHandler { /* private fields */ }

Handler to cooperate with Linux fscache driver to manage cached blob objects.

The FsCacheHandler create a communication channel with the Linux fscache driver, configure the communication session and serves all requests from the fscache driver.

Implementations

impl FsCacheHandler

pub fn new( path: &str, dir: &str, tag: Option<&str>, blob_cache_mgr: Arc<BlobCacheMgr>, threads: usize ) -> Result<FsCacheHandler, Error>

Create a new instance of FsCacheHandler.

pub fn working_threads(&self) -> usize

Get number of working threads to service fscache requests.

pub fn stop(&self)

Stop worker threads for the fscache service.

pub fn run_loop(&self) -> Result<(), Error>

Run the event loop to handle all requests from kernel fscache driver.

This method should only be invoked by a single thread, which will poll the fscache fd and dispatch requests from fscache fd to other working threads.

pub fn cull_cache(&self, blob_id: String) -> Result<(), Error>

Reclaim unused facache objects.

Trait Implementations

impl AsRawFd for FsCacheHandler

fn as_raw_fd(&self) -> i32

Extracts the raw file descriptor.