Package org.apache.activemq.artemis.utils.collections

Class ConcurrentLongHashMap<V>

  • Type Parameters:
    V - 
    public class ConcurrentLongHashMap<V>
extends Object
    Map from long to an Object. Provides similar methods as a ConcurrentMap<long,Object> with 2 differences:
    1. No boxing/unboxing from long -> Long
    2. Open hash map with linear probing, no node allocations to store the values

    • Constructor Detail

      • ConcurrentLongHashMap

        public ConcurrentLongHashMap()

      • ConcurrentLongHashMap

        public ConcurrentLongHashMap​(int expectedItems)

      • ConcurrentLongHashMap

        public ConcurrentLongHashMap​(int expectedItems,
                             int numSections)

    • Method Detail

      • size

        public int size()

      • capacity

        public long capacity()

      • isEmpty

        public boolean isEmpty()

      • get

        public V get​(long key)

      • containsKey

        public boolean containsKey​(long key)

      • put

        public V put​(long key,
             V value)

      • putIfAbsent

        public V putIfAbsent​(long key,
                     V value)

      • computeIfAbsent

        public V computeIfAbsent​(long key,
                         LongFunction<V> provider)

      • remove

        public V remove​(long key)

      • remove

        public boolean remove​(long key,
                      Object value)

      • clear

        public void clear()

      • keys

        public List<Long> keys()
        Returns:
        a new list of all keys (makes a copy)

      • values

        public List<V> values()