Struct sequoia_openpgp::packet::signature::cache::SignatureVerificationCache

pub struct SignatureVerificationCache { /* private fields */ }

A signature verification cache.

Implementations

impl SignatureVerificationCache

pub fn cache_hits() -> usize

Returns the number of cache hits.

pub fn cache_misses() -> usize

Returns the number of cache misses.

pub fn insertions() -> usize

Returns the number of cache insertions.

This returns the number of times an entry was added to the cache since the program started or the last time SignatureVerificationCache::clear_insertions was called.

This does not include entries added via SignatureVerificationCache::restore.

pub fn clear_insertions()

Resets the insertions counter.

pub fn restore<'a, F>( entries: impl Iterator<Item = Vec<u8>> + Send + Sync + 'static, finished: F, )

where F: FnOnce() + Send + Sync + 'static,

Restores the signature verification cache.

This merges the entries into the existing signature cache.

The values are the values as returned by Entry::value.

The iterator is Send, Sync and 'static, because this function may spawn a thread to avoid blocking the main thread.

When the restore is complete, finished is called.

pub fn dump<'a>() -> impl IntoIterator<Item = Entry>

Dumps the contents of the cache.

This clones the cache to avoid holding locks too long.

The values returned by Entry::value may be written to a file, and restored using SignatureVerificationCache::restore.

Before saving them, you may want to check if there were any insertions using SignatureVerificationCache::insertions.

Also, you may want to prune the entries to avoid having the cache grow without bound.