Provides commons interfaces and classes related to concurrency
Interface Summary Interface Description ConcurrentWeakKeyHashMap.ReusableIterator<E>
Class Summary Class Description ConcurrentHashSet<E>A simple Set implementation backed by a
ConcurrentHashMapto deal with the fact that the JDK does not have a proper concurrent Set implementation that uses efficient lock striping.
ConcurrentWeakKeyHashMap<K,V> NonReentrantLockA simplistic non-reentrant lock that does not use ownership by thread. StripedCounters<T>Duplicates a set of counters in a set of stripes, so that multiple threads can increment those counters without too much contention.