Examples of ConcurrentLinkedQueue

edu.emory.mathcs.backport.java.util.concurrent.ConcurrentLinkedQueue
s.rochester.edu/u/michael/PODC96.html"> Simple, Fast, and Practical Non-Blocking and Blocking Concurrent Queue Algorithms by Maged M. Michael and Michael L. Scott.
Beware that, unlike in most collections, the size method is NOT a constant-time operation. Because of the asynchronous nature of these queues, determining the current number of elements requires a traversal of the elements.
This class and its iterator implement all of the optional methods of the {@link Collection} and {@link Iterator} interfaces.
This class is a member of the Java Collections Framework. @since 1.5 @author Doug Lea
java.util.concurrent.ConcurrentLinkedQueue
s.rochester.edu/u/michael/PODC96.html"> Simple, Fast, and Practical Non-Blocking and Blocking Concurrent Queue Algorithms by Maged M. Michael and Michael L. Scott.
Iterators are weakly consistent, returning elements reflecting the state of the queue at some point at or since the creation of the iterator. They do not throw {@link java.util.ConcurrentModificationException}, and may proceed concurrently with other operations. Elements contained in the queue since the creation of the iterator will be returned exactly once.
Beware that, unlike in most collections, the {@code size} methodis NOT a constant-time operation. Because of the asynchronous nature of these queues, determining the current number of elements requires a traversal of the elements, and so may report inaccurate results if this collection is modified during traversal. Additionally, the bulk operations {@code addAll}, {@code removeAll}, {@code retainAll}, {@code containsAll}, {@code equals}, and {@code toArray} are not guaranteedto be performed atomically. For example, an iterator operating concurrently with an {@code addAll} operation might view only someof the added elements.
This class and its iterator implement all of the optional methods of the {@link Queue} and {@link Iterator} interfaces.
Memory consistency effects: As with other concurrent collections, actions in a thread prior to placing an object into a {@code ConcurrentLinkedQueue}happen-before actions subsequent to the access or removal of that element from the {@code ConcurrentLinkedQueue} in another thread.
This class is a member of the Java Collections Framework. @since 1.5 @author Doug Lea @param < E> the type of elements held in this collection

Examples of java.util.concurrent.ConcurrentLinkedQueue

     */
    private void runTasks(Thread currentRunninghread) {
        do {
            try {
                Runnable task;
                ConcurrentLinkedQueue tasks = m_tasks;


                while ((task = (Runnable) tasks.poll()) != null) {
                    runTask(task);
                }
            }
            finally {
                m_runningThread.set(null);

View Full Code Here

Examples of java.util.concurrent.ConcurrentLinkedQueue

    /**
     * PERF:
     * Init the calendar cache use to avoid calendar creation for processing java.sql/util.Date/Time/Timestamp objects.
     */
    public static Queue initCalendarCache() {
        Queue calendarCache = new ConcurrentLinkedQueue();
        for (int index = 0; index < 10; index++) {
            calendarCache.add(Calendar.getInstance());
        }
        return calendarCache;
    }

View Full Code Here

Examples of java.util.concurrent.ConcurrentLinkedQueue

    private          SegmentMemory   segmentMemory;
    private          Queue           queue;


    public PathMemory(NetworkNode networkNode) {
        this.networkNode = networkNode;
        this.queue = new ConcurrentLinkedQueue();
    }

View Full Code Here

Examples of java.util.concurrent.ConcurrentLinkedQueue

                     "end";
        int N = 1100;


        KnowledgeBase kb = loadKnowledgeBaseFromString( drl );
        final StatefulKnowledgeSession ks = kb.newStatefulKnowledgeSession();
        ConcurrentLinkedQueue list = new ConcurrentLinkedQueue<Integer>();
        AtomicInteger counter = new AtomicInteger(0);
        ks.setGlobal( "list", list );
        //ks.setGlobal( "counter", counter );


        new Thread () {
            public void run () {
                ks.fireUntilHalt();
            }
        }.start ();


        for ( int j = 0; j < N; j++ ) {
            ks.getEntryPoint( "x" ).insert( new Integer( j ) );
        }


        int count = 0;
        while ( list.size() != N && count++ != 1000) {
            Thread.sleep( 200 );
        }


        ks.halt();
        if ( list.size() != N ) {
            for ( int j = 0; j < N; j++ ) {
                if ( !list.contains( new Integer( j ) ) ) {
                    System.out.println( "missed: " + j );
                }
            }
        }


        assertEquals( N, list.size() );
    }

View Full Code Here

Examples of java.util.concurrent.ConcurrentLinkedQueue

    private ConcurrentLinkedQueue<HUDEvent> eventQueue;
    private boolean notifying = false;
    private int id;


    public HUDObject2D() {
        listeners = new ConcurrentLinkedQueue();
        eventQueue = new ConcurrentLinkedQueue();
        bounds = new Rectangle2D.Double();
        id = new Random().nextInt(10000);
    }

View Full Code Here

Examples of java.util.concurrent.ConcurrentLinkedQueue

        = new ReplicationResponseRepository();    
    
    /** Creates a new instance of ReplicationResponseRepository */
    public ReplicationResponseRepository() {
        _repository = new ConcurrentHashMap();
        _queueForQueues = new ConcurrentLinkedQueue();
        _federatedQueryRepository = new ConcurrentHashMap();
    }

View Full Code Here

Examples of java.util.concurrent.ConcurrentLinkedQueue

            element = cache.get(QUEUE_KEY);
        } catch (CacheException e) {
            throw new AsynchronousCommandException("Unable to retrieve queue.", e);
        }
        if (element == null) {
            queue = new ConcurrentLinkedQueue();
            Element queueElement = new Element(QUEUE_KEY, queue);
            cache.put(queueElement);
        } else {
            queue = (Queue) element.getValue();
        }

View Full Code Here

Examples of java.util.concurrent.ConcurrentLinkedQueue

        //  Filling up processor_imagefetcher_queue 
    }
    
    public void saveImages() throws IOException
    {
       ConcurrentLinkedQueue results = thread_pool.getResult();
       ImageNode image ;
       
        if(results.isEmpty())             // If there is no image then return
            return ;
       int max_x=0;
       int max_y=0;
       BufferedImage image_iterate;
       for(Iterator i=results.iterator(); i.hasNext();)
       {
           image = (ImageNode) i.next();
           image_iterate= image.actual_image;
           max_x+=image_iterate.getWidth();
           if(max_y<image_iterate.getHeight())
               max_y=image_iterate.getHeight();
       }
       BufferedImage new_image = new BufferedImage(max_x,max_y,BufferedImage.TYPE_3BYTE_BGR);
       Graphics g = new_image.getGraphics();
       int temp_x=0;
       for(Iterator i=results.iterator(); i.hasNext();)
       {
           image = (ImageNode) i.next();
           image_iterate= image.actual_image;
           g.drawImage(image_iterate, temp_x, 0, null);
           temp_x += image_iterate.getWidth();
       }
       results.clear();   // Cleaning and sanitizing queue
       File outputfile = new File("image_cache\\"+item.hashCode()+".png");
       ImageIO.write(new_image, "png", outputfile);
        
    }

View Full Code Here

Examples of java.util.concurrent.ConcurrentLinkedQueue

  }


  public TcpConnection(ILogAgent par1ILogAgent, Socket par2Socket, String par3Str, NetHandler par4NetHandler, PrivateKey par5PrivateKey) throws IOException {
    this.sendQueueLock = new Object();
    this.isRunning = true;
    this.readPackets = new ConcurrentLinkedQueue();    
    this.dataPackets = Collections.synchronizedList(new ArrayList());
    this.chunkDataPackets = Collections.synchronizedList(new ArrayList());    
    this.terminationReason = "";    
    this.chunkDataPacketsDelay = 50;
    this.field_74463_A = par5PrivateKey;

View Full Code Here

Examples of java.util.concurrent.ConcurrentLinkedQueue

    /**
     * PERF:
     * Init the calendar cache use to avoid calendar creation for processing java.sql/util.Date/Time/Timestamp objects.
     */
    public static Queue initCalendarCache() {
        Queue calendarCache = new ConcurrentLinkedQueue();
        for (int index = 0; index < 10; index++) {
            calendarCache.add(Calendar.getInstance());
        }
        return calendarCache;
    }

View Full Code Here

0 1 2 3 4 5

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.