Struct style::stylist::CascadeDataCache

struct CascadeDataCache<Entry> {
    entries: FxHashMap<CascadeDataCacheKey, Arc<Entry>>,
}

Fields

entries: FxHashMap<CascadeDataCacheKey, Arc<Entry>>

Implementations

impl<Entry> CascadeDataCache<Entry>where Entry: CascadeDataCacheEntry,

fn new() -> Self

fn len(&self) -> usize

fn lookup<'a, S>( &'a mut self, device: &Device, quirks_mode: QuirksMode, collection: SheetCollectionFlusher<'_, S>, guard: &SharedRwLockReadGuard<'_>, old_entry: &Entry ) -> Result<Option<Arc<Entry>>, AllocErr>where S: StylesheetInDocument + PartialEq + 'static,

fn take_unused(&mut self) -> SmallVec<[Arc<Entry>; 3]>

Returns all the cascade datas that are not being used (that is, that are held alive just by this cache).

We return them instead of dropping in place because some of them may keep alive some other documents (like the SVG documents kept alive by URL references), and thus we don’t want to drop them while locking the cache to not deadlock.

fn take_all(&mut self) -> FxHashMap<CascadeDataCacheKey, Arc<Entry>>