Package com.google.code.yanf4j.util

Class CircularQueue<E>

  • Type Parameters:
    E -
    All Implemented Interfaces:
    java.io.Serializable, java.lang.Iterable<E>, java.util.Collection<E>, java.util.List<E>, java.util.Queue<E>
    public class CircularQueue<E>
extends java.util.AbstractList<E>
implements java.util.List<E>, java.util.Queue<E>, java.io.Serializable
    A circular queue from mina
    See Also:
    Serialized Form

    • Constructor Summary

      Constructors 
      Constructor Description
      CircularQueue()
      Construct a new, empty queue.
      CircularQueue​(int initialCapacity)  

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void add​(int idx, E o)  
      boolean add​(E o)  
      int capacity()
      Returns the capacity of this queue.
      private void checkIndex​(int idx)  
      void clear()  
      private void decreaseSize()  
      E element()  
      private void expandIfNeeded()  
      E get​(int idx)  
      private int getRealIndex​(int idx)  
      private void increaseSize()  
      boolean isEmpty()  
      private static int normalizeCapacity​(int initialCapacity)  
      boolean offer​(E item)  
      E peek()  
      E poll()  
      E remove()  
      E remove​(int idx)  
      E set​(int idx, E o)  
      private void shrinkIfNeeded()  
      int size()  
      java.lang.String toString()  

      • Methods inherited from class java.util.AbstractList

        addAll, equals, hashCode, indexOf, iterator, lastIndexOf, listIterator, listIterator, removeRange, subList

      • Methods inherited from class java.util.AbstractCollection

        addAll, contains, containsAll, remove, removeAll, retainAll, toArray, toArray

      • Methods inherited from class java.lang.Object

        clone, finalize, getClass, notify, notifyAll, wait, wait, wait

      • Methods inherited from interface java.util.Collection

        parallelStream, removeIf, stream, toArray

      • Methods inherited from interface java.lang.Iterable

        forEach

      • Methods inherited from interface java.util.List

        addAll, addAll, contains, containsAll, equals, hashCode, indexOf, iterator, lastIndexOf, listIterator, listIterator, remove, removeAll, replaceAll, retainAll, sort, spliterator, subList, toArray, toArray

    • Field Detail

      • initialCapacity

        private final int initialCapacity

      • items

        private volatile java.lang.Object[] items

      • mask

        private int mask

      • first

        private int first

      • last

        private int last

      • full

        private boolean full

      • shrinkThreshold

        private int shrinkThreshold

    • Constructor Detail

      • CircularQueue

        public CircularQueue()
        Construct a new, empty queue.

      • CircularQueue

        public CircularQueue​(int initialCapacity)

    • Method Detail

      • normalizeCapacity

        private static int normalizeCapacity​(int initialCapacity)

      • capacity

        public int capacity()
        Returns the capacity of this queue.

      • clear

        public void clear()
        Specified by:
        clear in interface java.util.Collection<E>
        Specified by:
        clear in interface java.util.List<E>
        Overrides:
        clear in class java.util.AbstractList<E>

      • poll

        public E poll()
        Specified by:
        poll in interface java.util.Queue<E>

      • offer

        public boolean offer​(E item)
        Specified by:
        offer in interface java.util.Queue<E>

      • peek

        public E peek()
        Specified by:
        peek in interface java.util.Queue<E>

      • get

        public E get​(int idx)
        Specified by:
        get in interface java.util.List<E>
        Specified by:
        get in class java.util.AbstractList<E>

      • isEmpty

        public boolean isEmpty()
        Specified by:
        isEmpty in interface java.util.Collection<E>
        Specified by:
        isEmpty in interface java.util.List<E>
        Overrides:
        isEmpty in class java.util.AbstractCollection<E>

      • size

        public int size()
        Specified by:
        size in interface java.util.Collection<E>
        Specified by:
        size in interface java.util.List<E>
        Specified by:
        size in class java.util.AbstractCollection<E>

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.util.AbstractCollection<E>

      • checkIndex

        private void checkIndex​(int idx)

      • getRealIndex

        private int getRealIndex​(int idx)

      • increaseSize

        private void increaseSize()

      • decreaseSize

        private void decreaseSize()

      • expandIfNeeded

        private void expandIfNeeded()

      • shrinkIfNeeded

        private void shrinkIfNeeded()

      • add

        public boolean add​(E o)
        Specified by:
        add in interface java.util.Collection<E>
        Specified by:
        add in interface java.util.List<E>
        Specified by:
        add in interface java.util.Queue<E>
        Overrides:
        add in class java.util.AbstractList<E>

      • set

        public E set​(int idx,
             E o)
        Specified by:
        set in interface java.util.List<E>
        Overrides:
        set in class java.util.AbstractList<E>

      • add

        public void add​(int idx,
                E o)
        Specified by:
        add in interface java.util.List<E>
        Overrides:
        add in class java.util.AbstractList<E>

      • remove

        public E remove​(int idx)
        Specified by:
        remove in interface java.util.List<E>
        Overrides:
        remove in class java.util.AbstractList<E>

      • remove

        public E remove()
        Specified by:
        remove in interface java.util.Queue<E>

      • element

        public E element()
        Specified by:
        element in interface java.util.Queue<E>