Example usage for java.util.concurrent ConcurrentLinkedQueue ConcurrentLinkedQueue

Introduction

In this page you can find the example usage for java.util.concurrent ConcurrentLinkedQueue ConcurrentLinkedQueue.

Prototype

public ConcurrentLinkedQueue(Collection<? extends E> c) 

Source Link

Document

Creates a ConcurrentLinkedQueue initially containing the elements of the given collection, added in traversal order of the collection's iterator.

Usage

From source file:Main.java

public static <E> Queue<E> getConcurrentLinkedQueue(Collection<? extends E> collection) {
    return new ConcurrentLinkedQueue<E>(collection);
}

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From source file:Main.java

public static <E> ConcurrentLinkedQueue<E> newConcurrentLinkedQueue(final Collection<? extends E> c) {
    return new ConcurrentLinkedQueue<E>(c);
}

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From source file:org.apache.streams.amazon.kinesis.KinesisPersistReader.java

public StreamsResultSet readCurrent() {

    StreamsResultSet current;/*  w w w.j a va 2s.  com*/
    synchronized (KinesisPersistReader.class) {
        current = new StreamsResultSet(new ConcurrentLinkedQueue<>(persistQueue));
        persistQueue.clear();
    }
    return current;
}

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From source file:org.apache.http.HC4.impl.nio.client.PipeliningClientExchangeHandlerImpl.java

public PipeliningClientExchangeHandlerImpl(final Log log, final HttpHost target,
        final List<? extends HttpAsyncRequestProducer> requestProducers,
        final List<? extends HttpAsyncResponseConsumer<T>> responseConsumers,
        final HttpClientContext localContext, final BasicFuture<List<T>> resultFuture,
        final NHttpClientConnectionManager connmgr, final HttpProcessor httpProcessor,
        final ConnectionReuseStrategy connReuseStrategy, final ConnectionKeepAliveStrategy keepaliveStrategy) {
    super(log, localContext, resultFuture, connmgr, connReuseStrategy, keepaliveStrategy);
    Args.notNull(target, "HTTP target");
    Args.notEmpty(requestProducers, "Request producer list");
    Args.notEmpty(responseConsumers, "Response consumer list");
    Args.check(requestProducers.size() == responseConsumers.size(),
            "Number of request producers does not match that of response consumers");
    this.target = target;
    this.requestProducerQueue = new ConcurrentLinkedQueue<HttpAsyncRequestProducer>(requestProducers);
    this.responseConsumerQueue = new ConcurrentLinkedQueue<HttpAsyncResponseConsumer<T>>(responseConsumers);
    this.requestQueue = new ConcurrentLinkedQueue<HttpRequest>();
    this.resultQueue = new ConcurrentLinkedQueue<T>();
    this.localContext = localContext;
    this.resultFuture = resultFuture;
    this.httpProcessor = httpProcessor;
    this.requestProducerRef = new AtomicReference<HttpAsyncRequestProducer>(null);
    this.responseConsumerRef = new AtomicReference<HttpAsyncResponseConsumer<T>>(null);
}

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From source file:cltestgrid.Upload2.java

private void saveBlobsInParallel(List<MyFileItem> items) {
    final int THREAD_COUNT = 20;

    final ConcurrentLinkedQueue<MyFileItem> tasks = new ConcurrentLinkedQueue<MyFileItem>(items);
    final CountDownLatch doneLatch = new CountDownLatch(THREAD_COUNT);

    for (int i = 0; i < THREAD_COUNT; i++) {
        ThreadManager.createThreadForCurrentRequest(new Runnable() {
            public void run() {
                MyFileItem item = null;//from   w ww. ja  va2 s . c o  m
                try {
                    while ((item = tasks.poll()) != null) {
                        try {
                            saveBlob(item.blobName, item.contentType, item.dataCollector.toByteArray());
                            // Saving blob may throw a LockException due to CloudStorage issue
                            // http://code.google.com/p/googleappengine/issues/detail?id=8592
                            // Therefore retry two times in case of LockException:
                        } catch (com.google.appengine.api.files.LockException e) {
                            try {
                                log.log(Level.WARNING, "retry saving blob " + item.blobName
                                        + " because of LockException when saving it first time", e);
                                saveBlob(item.blobName, item.contentType, item.dataCollector.toByteArray());
                            } catch (com.google.appengine.api.files.LockException e2) {
                                log.log(Level.WARNING,
                                        "second retry saving blob " + item.blobName
                                                + " because of LockException when saving it at first retry",
                                        e2);
                                saveBlob(item.blobName, item.contentType, item.dataCollector.toByteArray());
                            }
                        }
                    }
                } catch (Throwable t) {
                    if (item != null) {
                        item.saveError = t;
                    }
                    log.log(Level.SEVERE, "Error while saving blob", t);
                } finally {
                    doneLatch.countDown();
                }
            }
        }).start();
    }

    try {
        doneLatch.await();
    } catch (InterruptedException e) {
        throw new RuntimeException("Interrupted while saving blobs", e);
    }
}

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From source file:org.apache.streams.s3.S3PersistReader.java

@Override
public StreamsResultSet readCurrent() {

    StreamsResultSet current;//from w ww. j  a va 2s.  co m

    synchronized (S3PersistReader.class) {
        current = new StreamsResultSet(new ConcurrentLinkedQueue<>(persistQueue));
        current.setCounter(new DatumStatusCounter());
        current.getCounter().add(countersCurrent);
        countersTotal.add(countersCurrent);
        countersCurrent = new DatumStatusCounter();
        persistQueue.clear();
    }
    return current;
}

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From source file:org.apache.streams.facebook.provider.FacebookFriendFeedProvider.java

@Override
public StreamsResultSet readCurrent() {

    StreamsResultSet current;//from  ww  w .  ja va2s  . c om

    synchronized (FacebookUserstreamProvider.class) {
        current = new StreamsResultSet(new ConcurrentLinkedQueue<>(providerQueue));
        current.setCounter(new DatumStatusCounter());
        current.getCounter().add(countersCurrent);
        countersTotal.add(countersCurrent);
        countersCurrent = new DatumStatusCounter();
        providerQueue.clear();
    }

    return current;

}

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From source file:org.apache.streams.hdfs.WebHdfsPersistReader.java

@Override
public StreamsResultSet readCurrent() {

    StreamsResultSet current;/* w w  w .  j av  a2  s.  co m*/

    synchronized (WebHdfsPersistReader.class) {
        current = new StreamsResultSet(new ConcurrentLinkedQueue<>(persistQueue));
        current.setCounter(new DatumStatusCounter());
        current.getCounter().add(countersCurrent);
        countersTotal.add(countersCurrent);
        countersCurrent = new DatumStatusCounter();
        persistQueue.clear();
    }

    return current;
}

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From source file:org.jiemamy.utils.collection.CollectionsUtil.java

/**
 * {@link ConcurrentLinkedQueue}?????/*from   w ww . java 2 s  . c  o  m*/
 * 
 * @param <E> {@link ConcurrentLinkedQueue}??
 * @param c ?????
 * @return {@link ConcurrentLinkedQueue}???
 * @throws IllegalArgumentException ?{@code null}???
 * @see ConcurrentLinkedQueue#ConcurrentLinkedQueue(Collection)
 */
public static <E> ConcurrentLinkedQueue<E> newConcurrentLinkedQueue(Collection<? extends E> c) {
    Validate.notNull(c);
    return new ConcurrentLinkedQueue<E>(c);
}

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From source file:io.hops.ha.common.TransactionStateImpl.java

public void addAllRanNodes(RMAppAttempt appAttempt) {
    Map<Integer, RanNode> ranNodeToPersist = new HashMap<Integer, RanNode>();
    Queue<NodeId> ranNodes = new ConcurrentLinkedQueue<NodeId>(appAttempt.getRanNodes());
    for (NodeId nid : ranNodes) {
        RanNode node = new RanNode(appAttempt.getAppAttemptId().toString(), nid.toString());
        ranNodeToPersist.put(node.hashCode(), node);
    }/*from  w w  w.  j a va2  s  .c o m*/

    this.ranNodeToAdd.put(appAttempt.getAppAttemptId(), ranNodeToPersist);
    appIds.add(appAttempt.getAppAttemptId().getApplicationId());
}

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