Example usage for java.util.concurrent Executors newCachedThreadPool

Introduction

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

Prototype

public static ExecutorService newCachedThreadPool() 

Source Link

Document

Creates a thread pool that creates new threads as needed, but will reuse previously constructed threads when they are available.

Usage

From source file:com.alibaba.otter.shared.arbitrate.zookeeper.DistributedReentrantLockTest.java

@Test
protected void test_lock() {
    ExecutorService exeucotr = Executors.newCachedThreadPool();
    final int count = 50;
    final CountDownLatch latch = new CountDownLatch(count);

    final DistributedReentrantLock lock = new DistributedReentrantLock(dir);
    for (int i = 0; i < count; i++) {
        exeucotr.submit(new Runnable() {

            public void run() {
                try {
                    Thread.sleep(1000);
                    lock.lock();/*from  w w w  .j a va  2  s.co  m*/
                    Thread.sleep(100 + RandomUtils.nextInt(100));

                    System.out.println("id: " + lock.getId() + " is leader: " + lock.isOwner());
                } catch (InterruptedException e) {
                    want.fail();
                } catch (KeeperException e) {
                    want.fail();
                } finally {
                    latch.countDown();
                    try {
                        lock.unlock();
                    } catch (KeeperException e) {
                        want.fail();
                    }
                }

            }
        });
    }

    try {
        latch.await();
    } catch (InterruptedException e) {
        want.fail();
    }

    exeucotr.shutdown();
}

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From source file:jcuda.jcublas.kernel.TestMultipleThreads.java

@Test
public void testMultipleThreads() throws InterruptedException {
    int numThreads = 10;
    final INDArray array = Nd4j.rand(3000, 3000);
    final INDArray expected = array.dup().mmul(array).mmul(array).div(array).div(array);
    final AtomicInteger correct = new AtomicInteger();
    final CountDownLatch latch = new CountDownLatch(numThreads);

    ExecutorService executors = Executors.newCachedThreadPool();

    for (int x = 0; x < numThreads; x++) {
        executors.execute(new Runnable() {
            @Override// w  w  w  .j  a  v  a  2 s .c  o  m
            public void run() {
                try {
                    int total = 10;
                    int right = 0;
                    for (int x = 0; x < total; x++) {
                        StopWatch watch = new StopWatch();
                        watch.start();
                        INDArray actual = array.dup().mmul(array).mmul(array).div(array).div(array);
                        watch.stop();
                        System.out.println("MMUL took " + watch.getTime());
                        if (expected.equals(actual))
                            right++;
                    }

                    if (total == right)
                        correct.incrementAndGet();
                } finally {
                    latch.countDown();
                }

            }
        });
    }

    latch.await();

    assertEquals(numThreads, correct.get());

}

---

From source file:com.microsoft.azure.servicebus.samples.deadletterqueue.DeadletterQueue.java

public void run(String connectionString) throws Exception {

    CompletableFuture<Void> receiveTask;
    CompletableFuture<Void> fixUpTask;
    IMessageSender sendClient;/*from w  ww.ja v  a  2 s .com*/

    sendClient = ClientFactory.createMessageSenderFromConnectionStringBuilder(
            new ConnectionStringBuilder(connectionString, "BasicQueue"));

    // max delivery-count scenario
    this.sendMessagesAsync(sendClient, 1).join();
    this.exceedMaxDelivery(connectionString, "BasicQueue").join();

    // fix-up scenario
    this.sendMessagesAsync(sendClient, Integer.MAX_VALUE);
    ExecutorService executorService = Executors.newCachedThreadPool();
    receiveTask = this.receiveMessagesAsync(connectionString, "BasicQueue", executorService);
    fixUpTask = this.PickUpAndFixDeadletters(connectionString, "BasicQueue", sendClient, executorService);

    // wait for ENTER or 10 seconds elapsing
    waitForEnter(10);

    receiveTask.cancel(true);
    fixUpTask.cancel(true);

    CompletableFuture.allOf(sendClient.closeAsync(), receiveTask.exceptionally(t -> {
        if (t instanceof CancellationException) {
            return null;
        }
        throw new RuntimeException((Throwable) t);
    }), fixUpTask.exceptionally(t -> {
        if (t instanceof CancellationException) {
            return null;
        }
        throw new RuntimeException((Throwable) t);
    })).join();

    executorService.shutdown();
}

---

From source file:fr.inria.edelweiss.kgdqp.core.CentralizedInferrencing.java

public static void main(String args[])
        throws ParseException, EngineException, InterruptedException, IOException {

    List<String> endpoints = new ArrayList<String>();
    String queryPath = null;//from www  . j  a  v a 2  s .c o m
    boolean rulesSelection = false;
    File rulesDir = null;
    File ontDir = null;

    /////////////////
    Graph graph = Graph.create();
    QueryProcess exec = QueryProcess.create(graph);

    Options options = new Options();
    Option helpOpt = new Option("h", "help", false, "print this message");
    //        Option queryOpt = new Option("q", "query", true, "specify the sparql query file");
    //        Option endpointOpt = new Option("e", "endpoint", true, "a federated sparql endpoint URL");
    Option versionOpt = new Option("v", "version", false, "print the version information and exit");
    Option rulesOpt = new Option("r", "rulesDir", true, "directory containing the inference rules");
    Option ontOpt = new Option("o", "ontologiesDir", true,
            "directory containing the ontologies for rules selection");
    //        Option locOpt = new Option("c", "centralized", false, "performs centralized inferences");
    Option dataOpt = new Option("l", "load", true, "data file or directory to be loaded");
    //        Option selOpt = new Option("s", "rulesSelection", false, "if set to true, only the applicable rules are run");
    //        options.addOption(queryOpt);
    //        options.addOption(endpointOpt);
    options.addOption(helpOpt);
    options.addOption(versionOpt);
    options.addOption(rulesOpt);
    options.addOption(ontOpt);
    //        options.addOption(selOpt);
    //        options.addOption(locOpt);
    options.addOption(dataOpt);

    String header = "Corese/KGRAM rule engine experiment command line interface";
    String footer = "\nPlease report any issue to alban.gaignard@cnrs.fr, olivier.corby@inria.fr";

    CommandLineParser parser = new BasicParser();
    CommandLine cmd = parser.parse(options, args);
    if (cmd.hasOption("h")) {
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp("kgdqp", header, options, footer, true);
        System.exit(0);
    }
    if (cmd.hasOption("o")) {
        rulesSelection = true;
        String ontDirPath = cmd.getOptionValue("o");
        ontDir = new File(ontDirPath);
        if (!ontDir.isDirectory()) {
            logger.warn(ontDirPath + " is not a valid directory path.");
            System.exit(0);
        }
    }
    if (!cmd.hasOption("r")) {
        logger.info("You must specify a path for inference rules directory !");
        System.exit(0);
    }

    if (cmd.hasOption("l")) {
        String[] dataPaths = cmd.getOptionValues("l");
        for (String path : dataPaths) {
            Load ld = Load.create(graph);
            ld.load(path);
            logger.info("Loaded " + path);
        }
    }

    if (cmd.hasOption("v")) {
        logger.info("version 3.0.4-SNAPSHOT");
        System.exit(0);
    }

    String rulesDirPath = cmd.getOptionValue("r");
    rulesDir = new File(rulesDirPath);
    if (!rulesDir.isDirectory()) {
        logger.warn(rulesDirPath + " is not a valid directory path.");
        System.exit(0);
    }

    // Local rules graph initialization
    Graph rulesG = Graph.create();
    Load ld = Load.create(rulesG);

    if (rulesSelection) {
        // Ontology loading
        if (ontDir.isDirectory()) {
            for (File o : ontDir.listFiles()) {
                logger.info("Loading " + o.getAbsolutePath());
                ld.load(o.getAbsolutePath());
            }
        }
    }

    // Rules loading
    if (rulesDir.isDirectory()) {
        for (File r : rulesDir.listFiles()) {
            logger.info("Loading " + r.getAbsolutePath());
            ld.load(r.getAbsolutePath());
        }
    }

    // Rule engine initialization
    RuleEngine ruleEngine = RuleEngine.create(graph);
    ruleEngine.set(exec);
    ruleEngine.setOptimize(true);
    ruleEngine.setConstructResult(true);
    ruleEngine.setTrace(true);

    StopWatch sw = new StopWatch();
    logger.info("Federated graph size : " + graph.size());
    logger.info("Rules graph size : " + rulesG.size());

    // Rule selection
    logger.info("Rules selection");
    QueryProcess localKgram = QueryProcess.create(rulesG);
    ArrayList<String> applicableRules = new ArrayList<String>();
    sw.start();
    String rulesSelQuery = "";
    if (rulesSelection) {
        rulesSelQuery = pertinentRulesQuery;
    } else {
        rulesSelQuery = allRulesQuery;
    }
    Mappings maps = localKgram.query(rulesSelQuery);
    logger.info("Rules selected in " + sw.getTime() + " ms");
    logger.info("Applicable rules : " + maps.size());

    // Selected rule loading
    for (Mapping map : maps) {
        IDatatype dt = (IDatatype) map.getValue("?res");
        String rule = dt.getLabel();
        //loading rule in the rule engine
        //            logger.info("Adding rule : ");
        //            System.out.println("-------");
        //            System.out.println(rule);
        //            System.out.println("");
        //            if (! rule.toLowerCase().contains("sameas")) {
        applicableRules.add(rule);
        ruleEngine.addRule(rule);
        //            }
    }

    // Rules application on distributed sparql endpoints
    logger.info("Rules application (" + applicableRules.size() + " rules)");
    ExecutorService threadPool = Executors.newCachedThreadPool();
    RuleEngineThread ruleThread = new RuleEngineThread(ruleEngine);
    sw.reset();
    sw.start();

    //        ruleEngine.process();
    threadPool.execute(ruleThread);
    threadPool.shutdown();

    //monitoring loop
    while (!threadPool.isTerminated()) {
        //            System.out.println("******************************");
        //            System.out.println(Util.jsonDqpCost(QueryProcessDQP.queryCounter, QueryProcessDQP.queryVolumeCounter, QueryProcessDQP.sourceCounter, QueryProcessDQP.sourceVolumeCounter));
        //            System.out.println("Rule engine running for " + sw.getTime() + " ms");
        //            System.out.println("Federated graph size : " + graph.size());
        System.out.println(sw.getTime() + " , " + graph.size());
        Thread.sleep(5000);
    }

    logger.info("Federated graph size : " + graph.size());
    //        logger.info(Util.jsonDqpCost(QueryProcessDQP.queryCounter, QueryProcessDQP.queryVolumeCounter, QueryProcessDQP.sourceCounter, QueryProcessDQP.sourceVolumeCounter));

    //        TripleFormat f = TripleFormat.create(graph, true);
    //        f.write("/tmp/gAll.ttl");

}

---

From source file:net.brtly.monkeyboard.shell.ShellRunner.java

private ShellRunner() {
    _commandPool = Executors.newCachedThreadPool();
}

---

From source file:com.ljn.msg.lengthfield.Server.java

public void run() {
    // Configure the server.
    ServerBootstrap bootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(
            Executors.newCachedThreadPool(), Executors.newCachedThreadPool()));

    // Set up the pipeline factory.
    bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
        public ChannelPipeline getPipeline() throws Exception {
            ChannelPipeline pipeline = Channels.pipeline();

            int maxFrameLength = 8192;
            int lengthFieldOffset = 0;
            int lengthAdjustment = 0;
            int lengthFieldLength = 1;
            int initialBytesToStrip = 1;
            pipeline.addLast("frameDecoder", new LengthFieldBasedFrameDecoder(maxFrameLength, lengthFieldOffset,
                    lengthFieldLength, lengthAdjustment, initialBytesToStrip));
            pipeline.addLast("stringDecoder", new StringDecoder(Charsets.UTF_8));
            pipeline.addLast("serverHandler", new ServerHandler());

            return pipeline;
        }//from  ww w.jav a2 s.  co  m
    });

    // Bind and start to accept incoming connections.
    bootstrap.bind(new InetSocketAddress(port));
}

---

From source file:net.jmhertlein.mcanalytics.api.APISocket.java

public APISocket(PrintWriter out, BufferedReader in) {
    nextID = 0;/*  www  .j ava  2 s  .  co  m*/
    requests = new ConcurrentHashMap<>();
    this.out = out;
    this.in = in;
    workers = Executors.newCachedThreadPool();
}

---

From source file:com.espertech.esper.multithread.TestMTInsertIntoTimerConcurrency.java

public void testRun() throws Exception {
    idCounter = new AtomicLong(0);
    executorService = Executors.newCachedThreadPool();
    noActionUpdateListener = new NoActionUpdateListener();

    Configuration epConfig = new Configuration();
    epConfig.addEventType(SupportBean.class);
    epConfig.getEngineDefaults().getThreading()
            .setInsertIntoDispatchLocking(ConfigurationEngineDefaults.Threading.Locking.SUSPEND);

    final EPServiceProvider epServiceProvider = EPServiceProviderManager.getDefaultProvider(epConfig);
    epServiceProvider.initialize();//from  ww w. j av a2s .  c om

    epAdministrator = epServiceProvider.getEPAdministrator();
    epRuntime = epServiceProvider.getEPRuntime();

    epAdministrator.startAllStatements();

    String epl = "insert into Stream1 select count(*) as cnt from SupportBean.win:time(7 sec)";
    createEPL(epl, noActionUpdateListener);
    epl = epl + " output every 10 seconds";
    createEPL(epl, noActionUpdateListener);

    SendEventRunnable sendTickEventRunnable = new SendEventRunnable(10000);
    start(sendTickEventRunnable, 4);

    // Adjust here for long-running test
    Thread.sleep(3000);

    executorService.shutdown();
    executorService.awaitTermination(1, TimeUnit.SECONDS);
}

---

From source file:be.solidx.hot.test.data.jdbc.TestPyAsyncCollectionApi.java

@PostConstruct
public void init() {
    asyncDB = new PyAsyncDB(db, Executors.newCachedThreadPool(), Executors.newSingleThreadExecutor());
}

---

From source file:net.sheehantech.cherry.pool.KeyedPooledPushClient.java

public KeyedPooledPushClient(Map<K, SSLContext> sslContexts, Map<K, String> gateways, Map<K, Integer> ports) {
    super(sslContexts, gateways, ports);
    executor = Executors.newCachedThreadPool();
}

---

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