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() 

Source Link

Document

Creates a ConcurrentLinkedQueue that is initially empty.

Usage

From source file:com.ok2c.lightmtp.examples.LocalMailClientTransportExample.java

public static void main(final String[] args) throws Exception {

    String text1 = "From: root\r\n" + "To: testuser1\r\n" + "Subject: test message 1\r\n" + "\r\n"
            + "This is a short test message 1\r\n";
    String text2 = "From: root\r\n" + "To: testuser1, testuser2\r\n" + "Subject: test message 2\r\n" + "\r\n"
            + "This is a short test message 2\r\n";
    String text3 = "From: root\r\n" + "To: testuser1, testuser2, testuser3\r\n" + "Subject: test message 3\r\n"
            + "\r\n" + "This is a short test message 3\r\n";

    DeliveryRequest request1 = new BasicDeliveryRequest("root", Arrays.asList("testuser1"),
            new ByteArraySource(text1.getBytes("US-ASCII")));

    DeliveryRequest request2 = new BasicDeliveryRequest("root", Arrays.asList("testuser1", "testuser2"),
            new ByteArraySource(text2.getBytes("US-ASCII")));

    DeliveryRequest request3 = new BasicDeliveryRequest("root",
            Arrays.asList("testuser1", "testuser2", "testuser3"),
            new ByteArraySource(text3.getBytes("US-ASCII")));

    Queue<DeliveryRequest> queue = new ConcurrentLinkedQueue<DeliveryRequest>();
    queue.add(request1);/*from ww  w. j a  v  a  2  s.  c o  m*/
    queue.add(request2);
    queue.add(request3);

    CountDownLatch messageCount = new CountDownLatch(queue.size());

    IOReactorConfig config = IOReactorConfig.custom().setIoThreadCount(1).build();

    MailClientTransport mua = new LocalMailClientTransport(config);
    mua.start(new MyDeliveryRequestHandler(messageCount));

    SessionEndpoint endpoint = new SessionEndpoint(new InetSocketAddress("localhost", 2525));

    SessionRequest sessionRequest = mua.connect(endpoint, queue, null);
    sessionRequest.waitFor();

    IOSession iosession = sessionRequest.getSession();
    if (iosession != null) {
        messageCount.await();
    } else {
        IOException ex = sessionRequest.getException();
        if (ex != null) {
            System.out.println("Connection failed: " + ex.getMessage());
        }
    }

    System.out.println("Shutting down I/O reactor");
    try {
        mua.shutdown();
    } catch (IOException ex) {
        mua.forceShutdown();
    }
    System.out.println("Done");
}

---

From source file:mcnutty.music.get.MusicGet.java

public static void main(String[] args) throws Exception {

    //print out music-get
    System.out.println("                     _                      _   ");
    System.out.println(" _ __ ___  _   _ ___(_) ___       __ _  ___| |_ ");
    System.out.println("| '_ ` _ \\| | | / __| |/ __|____ / _` |/ _ \\ __|");
    System.out.println("| | | | | | |_| \\__ \\ | (_|_____| (_| |  __/ |_ ");
    System.out.println("|_| |_| |_|\\__,_|___/_|\\___|     \\__, |\\___|\\__|");
    System.out.println("                                 |___/          \n");

    //these will always be initialised later (but the compiler doesn't know that)
    String directory = "";
    Properties prop = new Properties();

    try (InputStream input = new FileInputStream("config.properties")) {
        prop.load(input);//from w  w w .  j a  va2  s .  com
        if (prop.getProperty("directory") != null) {
            directory = prop.getProperty("directory");
        } else {
            System.out.println(
                    "Error reading config property 'directory' - using default value of /tmp/musicserver/\n");
            directory = "/tmp/musicserver/";
        }
        if (prop.getProperty("password") == null) {
            System.out.println("Error reading config property 'password' - no default value, exiting\n");
            System.exit(1);
        }
    } catch (IOException e) {
        System.out.println("Error reading config file");
        System.exit(1);
    }

    //create a queue object
    ProcessQueue process_queue = new ProcessQueue();

    try {
        if (args.length > 0 && args[0].equals("clean")) {
            Files.delete(Paths.get("queue.json"));
        }
        //load an existing queue if possible
        String raw_queue = Files.readAllLines(Paths.get("queue.json")).toString();
        JSONArray queue_state = new JSONArray(raw_queue);
        ConcurrentLinkedQueue<QueueItem> loaded_queue = new ConcurrentLinkedQueue<>();
        JSONArray queue = queue_state.getJSONArray(0);
        for (int i = 0; i < queue.length(); i++) {
            JSONObject item = ((JSONObject) queue.get(i));
            QueueItem loaded_item = new QueueItem();
            loaded_item.ip = item.getString("ip");
            loaded_item.real_name = item.getString("name");
            loaded_item.disk_name = item.getString("guid");
            loaded_queue.add(loaded_item);
        }
        process_queue.bucket_queue = loaded_queue;
        System.out.println("Loaded queue from disk\n");
    } catch (Exception ex) {
        //otherwise clean out the music directory and start a new queue
        try {
            Files.walkFileTree(Paths.get(directory), new SimpleFileVisitor<Path>() {
                @Override
                public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                    Files.delete(file);
                    return FileVisitResult.CONTINUE;
                }
            });
            Files.delete(Paths.get(directory));
        } catch (Exception e) {
            e.printStackTrace();
        }
        Files.createDirectory(Paths.get(directory));
        System.out.println("Created a new queue\n");
    }

    //start the web server
    StartServer start_server = new StartServer(process_queue, directory);
    new Thread(start_server).start();

    //wit for the web server to spool up
    Thread.sleep(1000);

    //read items from the queue and play them
    while (true) {
        QueueItem next_item = process_queue.next_item();
        if (!next_item.equals(new QueueItem())) {
            //Check the timeout
            int timeout = 547;
            try (FileInputStream input = new FileInputStream("config.properties")) {
                prop.load(input);
                timeout = Integer.parseInt(prop.getProperty("timeout", "547"));
            } catch (Exception e) {
                e.printStackTrace();
            }
            System.out.println("Playing " + next_item.real_name);
            process_queue.set_played(next_item);
            process_queue.save_queue();
            Process p = Runtime.getRuntime().exec("timeout " + timeout
                    + "s mplayer -fs -quiet -af volnorm=2:0.25 " + directory + next_item.disk_name);

            try {
                p.waitFor(timeout, TimeUnit.SECONDS);
                Files.delete(Paths.get(directory + next_item.disk_name));
            } catch (Exception e) {
                e.printStackTrace();
            }
        } else {
            process_queue.bucket_played.clear();
        }
        Thread.sleep(1000);
    }
}

---

From source file:playground.johannes.socialnets.SpatialNetworkGenerator.java

/**
 * @param args/*  w  w w .  ja  v a  2 s.com*/
 * @throws InterruptedException 
 * @throws IOException 
 * @throws FileNotFoundException 
 */
public static void main(String[] args) throws InterruptedException, FileNotFoundException, IOException {
    Config config = Gbl.createConfig(args);

    alpha1 = Double.parseDouble(config.getParam("socialnets", "alpha1"));
    alpha2 = Double.parseDouble(config.getParam("socialnets", "alpha2"));
    gamma = Double.parseDouble(config.getParam("socialnets", "gamma"));
    logger.info(String.format("Parameters are: alpha1=%1$s, alpha2=%2$s, gamma=%3$s", alpha1, alpha2, gamma));

    logger.info("Loading network and plans...");
    ScenarioData data = new ScenarioData(config);
    final NetworkLayer network = data.getNetwork();
    final Population population = data.getPopulation();

    logger.info("Creating egos...");
    SocialNetwork socialNet = new SocialNetwork();
    ConcurrentLinkedQueue<Ego> egos = new ConcurrentLinkedQueue<Ego>();
    for (Person person : population) {
        egos.add(socialNet.addEgo(person));
    }

    logger.info("Initializing threads step 1...");
    double scale = 1;//Double.parseDouble(args[1]);
    InternalThread.totalEgos = egos.size();
    int count = 1;//Runtime.getRuntime().availableProcessors();
    InternalThread[] threads = new InternalThread[count];
    for (int i = 0; i < count; i++) {
        threads[i] = new InternalThread(network, socialNet, egos, scale, i);
    }
    for (Thread thread : threads) {
        thread.start();
    }
    for (Thread thread : threads) {
        thread.join();
    }

    dumpStats(socialNet, args[1], 0);

    for (int k = 0; k < 0; k++) {
        logger.info("Initializing threads setp " + (k + 2) + "...");

        Step2Thread.totalEgos = socialNet.getVertices().size();
        Step2Thread[] threads2 = new Step2Thread[count];
        for (int i = 0; i < count; i++) {
            threads2[i] = new Step2Thread(socialNet, new Random(i * (k + 1)));
        }
        for (Thread thread : threads2) {
            thread.start();
        }
        for (Thread thread : threads2) {
            thread.join();
        }

        dumpStats(socialNet, args[1], k + 1);
    }
}

---

From source file:com.ibm.crail.storage.StorageServer.java

public static void main(String[] args) throws Exception {
    Logger LOG = CrailUtils.getLogger();
    CrailConfiguration conf = new CrailConfiguration();
    CrailConstants.updateConstants(conf);
    CrailConstants.printConf();/*  w ww  .j a va  2s .co  m*/
    CrailConstants.verify();

    int splitIndex = 0;
    for (String param : args) {
        if (param.equalsIgnoreCase("--")) {
            break;
        }
        splitIndex++;
    }

    //default values
    StringTokenizer tokenizer = new StringTokenizer(CrailConstants.STORAGE_TYPES, ",");
    if (!tokenizer.hasMoreTokens()) {
        throw new Exception("No storage types defined!");
    }
    String storageName = tokenizer.nextToken();
    int storageType = 0;
    HashMap<String, Integer> storageTypes = new HashMap<String, Integer>();
    storageTypes.put(storageName, storageType);
    for (int type = 1; tokenizer.hasMoreElements(); type++) {
        String name = tokenizer.nextToken();
        storageTypes.put(name, type);
    }
    int storageClass = -1;

    //custom values
    if (args != null) {
        Option typeOption = Option.builder("t").desc("storage type to start").hasArg().build();
        Option classOption = Option.builder("c").desc("storage class the server will attach to").hasArg()
                .build();
        Options options = new Options();
        options.addOption(typeOption);
        options.addOption(classOption);
        CommandLineParser parser = new DefaultParser();

        try {
            CommandLine line = parser.parse(options, Arrays.copyOfRange(args, 0, splitIndex));
            if (line.hasOption(typeOption.getOpt())) {
                storageName = line.getOptionValue(typeOption.getOpt());
                storageType = storageTypes.get(storageName).intValue();
            }
            if (line.hasOption(classOption.getOpt())) {
                storageClass = Integer.parseInt(line.getOptionValue(classOption.getOpt()));
            }
        } catch (ParseException e) {
            HelpFormatter formatter = new HelpFormatter();
            formatter.printHelp("Storage tier", options);
            System.exit(-1);
        }
    }
    if (storageClass < 0) {
        storageClass = storageType;
    }

    StorageTier storageTier = StorageTier.createInstance(storageName);
    if (storageTier == null) {
        throw new Exception("Cannot instantiate datanode of type " + storageName);
    }

    String extraParams[] = null;
    splitIndex++;
    if (args.length > splitIndex) {
        extraParams = new String[args.length - splitIndex];
        for (int i = splitIndex; i < args.length; i++) {
            extraParams[i - splitIndex] = args[i];
        }
    }
    storageTier.init(conf, extraParams);
    storageTier.printConf(LOG);

    RpcClient rpcClient = RpcClient.createInstance(CrailConstants.NAMENODE_RPC_TYPE);
    rpcClient.init(conf, args);
    rpcClient.printConf(LOG);

    ConcurrentLinkedQueue<InetSocketAddress> namenodeList = CrailUtils.getNameNodeList();
    ConcurrentLinkedQueue<RpcConnection> connectionList = new ConcurrentLinkedQueue<RpcConnection>();
    while (!namenodeList.isEmpty()) {
        InetSocketAddress address = namenodeList.poll();
        RpcConnection connection = rpcClient.connect(address);
        connectionList.add(connection);
    }
    RpcConnection rpcConnection = connectionList.peek();
    if (connectionList.size() > 1) {
        rpcConnection = new RpcDispatcher(connectionList);
    }
    LOG.info("connected to namenode(s) " + rpcConnection.toString());

    StorageServer server = storageTier.launchServer();
    StorageRpcClient storageRpc = new StorageRpcClient(storageType, CrailStorageClass.get(storageClass),
            server.getAddress(), rpcConnection);

    HashMap<Long, Long> blockCount = new HashMap<Long, Long>();
    long sumCount = 0;
    while (server.isAlive()) {
        StorageResource resource = server.allocateResource();
        if (resource == null) {
            break;
        } else {
            storageRpc.setBlock(resource.getAddress(), resource.getLength(), resource.getKey());
            DataNodeStatistics stats = storageRpc.getDataNode();
            long newCount = stats.getFreeBlockCount();
            long serviceId = stats.getServiceId();

            long oldCount = 0;
            if (blockCount.containsKey(serviceId)) {
                oldCount = blockCount.get(serviceId);
            }
            long diffCount = newCount - oldCount;
            blockCount.put(serviceId, newCount);
            sumCount += diffCount;
            LOG.info("datanode statistics, freeBlocks " + sumCount);
        }
    }

    while (server.isAlive()) {
        DataNodeStatistics stats = storageRpc.getDataNode();
        long newCount = stats.getFreeBlockCount();
        long serviceId = stats.getServiceId();

        long oldCount = 0;
        if (blockCount.containsKey(serviceId)) {
            oldCount = blockCount.get(serviceId);
        }
        long diffCount = newCount - oldCount;
        blockCount.put(serviceId, newCount);
        sumCount += diffCount;

        LOG.info("datanode statistics, freeBlocks " + sumCount);
        Thread.sleep(2000);
    }
}

---

From source file:io.covert.dns.collection.ResolverThread.java

public static void main(String[] args) throws Exception {

    ConcurrentLinkedQueue<DnsRequest> inQueue = new ConcurrentLinkedQueue<DnsRequest>();
    AtomicLong inQueueSize = new AtomicLong(0);
    ConcurrentLinkedQueue<Pair<Record, Message>> outQueue = new ConcurrentLinkedQueue<Pair<Record, Message>>();
    String[] nameservers = new String[] { "8.8.8.8" };

    inQueue.add(new DnsRequest("www6.google.com.", Type.AAAA, DClass.IN));
    inQueue.add(new DnsRequest("ipv6.google.com.", Type.AAAA, DClass.IN));
    inQueue.add(new DnsRequest("gmail.com.", Type.AAAA, DClass.IN));
    inQueueSize.incrementAndGet();/* w  w  w. j  a va2s .  c o m*/
    inQueueSize.incrementAndGet();
    inQueueSize.incrementAndGet();

    ResolverThread res = new ResolverThread(inQueue, inQueueSize, outQueue, nameservers, 5);
    res.start();
    res.stopRunning();
    res.join();

    Pair<Record, Message> result = outQueue.remove();
    System.out.println(result);

    result = outQueue.remove();
    System.out.println(result);

    result = outQueue.remove();
    System.out.println(result);
}

---

From source file:Main.java

public static <T> Collection<T> createSyncronizedCollection() {
    return new ConcurrentLinkedQueue<T>();
}

---

From source file:Main.java

public static <E> Queue<E> getConcurrentLinkedQueue() {
    return new ConcurrentLinkedQueue<E>();
}

---

From source file:Main.java

public static <E> ConcurrentLinkedQueue<E> newConcurrentLinkedQueue() {
    return new ConcurrentLinkedQueue<E>();
}

---

From source file:com.insightml.utils.Collections.java

public static <I> ConcurrentLinkedQueue<I> newConcurrentList() {
    return new ConcurrentLinkedQueue<>();
}

---

From source file:edu.eci.arsw.msgbroker.ManejadorPuntos.java

public void reset() {
    puntos = new ConcurrentLinkedQueue<Point>();
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• »