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more functional

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This commit is contained in:
Nikolay Volf 2016-02-17 23:25:25 +03:00
parent 40f5ea4007
commit aad49cb19f
1 changed files with 7 additions and 10 deletions
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17
util/src/keys/directory.rs
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@ -510,19 +510,16 @@ impl KeyDirectory {
cache_usage.drain(..untracked_usages);
}
let mut cache = self.cache.borrow_mut();
if cache.len() <= MAX_CACHE_USAGE_TRACK { return; }
if self.cache.borrow().len() <= MAX_CACHE_USAGE_TRACK { return; }
let uniqs: HashSet<&Uuid> = cache_usage.iter().collect();
let mut removes = HashSet::new();
for key in cache.keys() {
if !uniqs.contains(key) {
removes.insert(key.clone());
}
let removes: Vec<Uuid> = {
let cache = self.cache.borrow();
cache.keys().cloned().filter(|key| !uniqs.contains(key)).collect()
};
for key in removes {
self.cache.borrow_mut().remove(&key);
}
for removed_key in removes { cache.remove(&removed_key); }
}
/// Reports how many keys are currently cached.