Example usage for java.util.concurrent ScheduledThreadPoolExecutor scheduleAtFixedRate

Introduction

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

Prototype

public ScheduledFuture<?> scheduleAtFixedRate(Runnable command, long initialDelay, long period, TimeUnit unit) 

Source Link

Document

Submits a periodic action that becomes enabled first after the given initial delay, and subsequently with the given period; that is, executions will commence after initialDelay , then initialDelay + period , then initialDelay + 2 * period , and so on.

Usage

From source file:Main.java

public static void main(String args[]) {
    ScheduledThreadPoolExecutor stpe = new ScheduledThreadPoolExecutor(5);

    stpe.scheduleAtFixedRate(new Job1(), 0, 5, TimeUnit.SECONDS);
    stpe.scheduleAtFixedRate(new Job2(), 1, 2, TimeUnit.SECONDS);
}

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From source file:Main.java

public static void main(String[] a) {
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setSize(200, 300);//  ww  w  .j a  va 2 s  .  c om
    PaintSurface canvas = new PaintSurface();

    ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(3);
    executor.scheduleAtFixedRate(canvas, 0L, 100L, TimeUnit.MILLISECONDS);

    f.add(canvas);
    f.setVisible(true);
}

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From source file:BallRoom.java

public static void main(String[] a) {
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setSize(200, 300);/*  w w  w.j a va  2  s  .co m*/
    PaintSurface canvas = new PaintSurface();

    ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(3);
    executor.scheduleAtFixedRate(canvas, 0L, 100L, TimeUnit.MILLISECONDS);

    f.getContentPane().add(canvas);
    f.setVisible(true);

}

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From source file:Main.java

public static void main(String[] args) {
    DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");

    ScheduledThreadPoolExecutor scheduledThreadPoolExecutor = new ScheduledThreadPoolExecutor(2);
    scheduledThreadPoolExecutor.scheduleAtFixedRate(() -> {

        throw new RuntimeException(" scheduleAtFixedRate test ScheduledThreadPoolExecutor");
    }, 0, 3000, TimeUnit.MILLISECONDS);

    scheduledThreadPoolExecutor.scheduleAtFixedRate(() -> {

        System.out.println("scheduleAtFixedRate: " + LocalDateTime.now().format(formatter));
    }, 0, 2000, TimeUnit.MILLISECONDS);

    scheduledThreadPoolExecutor.schedule(() -> {

        System.out.println("schedule");
    }, 1, TimeUnit.SECONDS);//from w  w w  .  j av a 2s  .c o  m
}

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From source file:com.l2jfree.util.concurrent.L2ThreadPool.java

public static ScheduledFuture<?> scheduleAtFixedRate(Runnable r, long delay, long period) {
    r = ExecuteWrapper.wrap(r);/*w  ww.j  a  va 2s .c o  m*/
    delay = validate(delay);
    period = validate(period);

    final ScheduledThreadPoolExecutor stpe = getRandomPool(_scheduledPools);
    final ScheduledFuture<?> sf = stpe.scheduleAtFixedRate(r, delay, period, TimeUnit.MILLISECONDS);

    return new ScheduledFutureWrapper(sf);
}

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From source file:edu.berkeley.sparrow.examples.SimpleFrontend.java

public void run(String[] args) {
    try {/*w  w w.  j  ava 2 s .  c om*/
        OptionParser parser = new OptionParser();
        parser.accepts("c", "configuration file").withRequiredArg().ofType(String.class);
        parser.accepts("help", "print help statement");
        OptionSet options = parser.parse(args);

        if (options.has("help")) {
            parser.printHelpOn(System.out);
            System.exit(-1);
        }

        // Logger configuration: log to the console
        BasicConfigurator.configure();
        LOG.setLevel(Level.DEBUG);

        Configuration conf = new PropertiesConfiguration();

        if (options.has("c")) {
            String configFile = (String) options.valueOf("c");
            conf = new PropertiesConfiguration(configFile);
        }

        int arrivalPeriodMillis = conf.getInt(JOB_ARRIVAL_PERIOD_MILLIS, DEFAULT_JOB_ARRIVAL_PERIOD_MILLIS);
        int experimentDurationS = conf.getInt(EXPERIMENT_S, DEFAULT_EXPERIMENT_S);
        LOG.debug("Using arrival period of " + arrivalPeriodMillis + " milliseconds and running experiment for "
                + experimentDurationS + " seconds.");
        int tasksPerJob = conf.getInt(TASKS_PER_JOB, DEFAULT_TASKS_PER_JOB);
        int taskDurationMillis = conf.getInt(TASK_DURATION_MILLIS, DEFAULT_TASK_DURATION_MILLIS);

        int schedulerPort = conf.getInt(SCHEDULER_PORT, SchedulerThrift.DEFAULT_SCHEDULER_THRIFT_PORT);
        String schedulerHost = conf.getString(SCHEDULER_HOST, DEFAULT_SCHEDULER_HOST);
        client = new SparrowFrontendClient();
        client.initialize(new InetSocketAddress(schedulerHost, schedulerPort), APPLICATION_ID, this);

        JobLaunchRunnable runnable = new JobLaunchRunnable(tasksPerJob, taskDurationMillis);
        ScheduledThreadPoolExecutor taskLauncher = new ScheduledThreadPoolExecutor(1);
        taskLauncher.scheduleAtFixedRate(runnable, 0, arrivalPeriodMillis, TimeUnit.MILLISECONDS);

        long startTime = System.currentTimeMillis();
        LOG.debug("sleeping");
        while (System.currentTimeMillis() < startTime + experimentDurationS * 1000) {
            Thread.sleep(100);
        }
        taskLauncher.shutdown();
    } catch (Exception e) {
        LOG.error("Fatal exception", e);
    }
}

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From source file:com.n0n3m4.q3e.Q3ECallbackObj.java

public void init(int size) {
    if (mAudioTrack != null)
        return;/*from w  w  w.  java  2s  .  com*/
    if ((Q3EUtils.q3ei.isQ3) || (Q3EUtils.q3ei.isRTCW) || (Q3EUtils.q3ei.isQ1) || (Q3EUtils.q3ei.isQ2))
        size /= 8;

    mAudioData = new byte[size];
    int sampleFreq = 44100;

    /*                        _.---"'"""""'`--.._
                     _,.-'                   `-._
                 _,."                            -.
             .-""   ___...---------.._             `.
             `---'""                  `-.            `.
                                         `.            \
                                           `.           \
                                             \           \
                                              .           \
                                              |            .
                                              |            |
                        _________             |            |
                  _,.-'"         `"'-.._      :            |
              _,-'                      `-._.'             |
           _.'            OUYA               `.             '
      _.-.    _,+......__                           `.          .
    .'    `-"'           `"-.,-""--._                 \        /
    /    ,'                  |    __  \                 \      /
    `   ..                       +"  )  \                 \    /
    `.'  \          ,-"`-..    |       |                  \  /
    / " |        .'       \   '.    _.'                   .'
    |,.."--"""--..|    "    |    `""`.                     |
    ,"               `-._     |        |                     |
    .'                     `-._+         |                     |
    /                           `.                        /     |
    |    `     '                  |                      /      |
    `-.....--.__                  |              |      /       |
    `./ "| / `-.........--.-   '              |    ,'        '
    /| ||        `.'  ,'   .'               |_,-+         /
    / ' '.`.        _,'   ,'     `.          |   '   _,.. /
    /   `.  `"'"'""'"   _,^--------"`.        |    `.'_  _/
    /... _.`:.________,.'              `._,.-..|        "'
    `.__.'                                 `._  /
                                   "' */

    int bufferSize = Math.max((Q3EUtils.isOuya) ? 0 : 3 * size, AudioTrack.getMinBufferSize(sampleFreq,
            AudioFormat.CHANNEL_CONFIGURATION_STEREO, AudioFormat.ENCODING_PCM_16BIT));
    mAudioTrack = new Q3EAudioTrack(AudioManager.STREAM_MUSIC, sampleFreq,
            AudioFormat.CHANNEL_CONFIGURATION_STEREO, AudioFormat.ENCODING_PCM_16BIT, bufferSize,
            AudioTrack.MODE_STREAM);
    mAudioTrack.play();
    long sleeptime = (size * 1000000000l) / (2 * 2 * sampleFreq);
    ScheduledThreadPoolExecutor stpe = new ScheduledThreadPoolExecutor(5);
    stpe.scheduleAtFixedRate(new Runnable() {
        @Override
        public void run() {
            if (reqThreadrunning) {
                Q3EJNI.requestAudioData();
            }
        }
    }, 0, sleeptime, TimeUnit.NANOSECONDS);
}

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From source file:net.roboconf.iaas.openstack.IaasOpenstack.java

@Override
public String createVM(String machineImageId, String ipMessagingServer, String channelName,
        String applicationName) throws IaasException, CommunicationToIaasException {

    if (machineImageId == null || "".equals(machineImageId))
        machineImageId = this.machineImageId;

    // Normally we use flavor names in the configuration, not IDs
    // But lets's assume it can be an ID...
    String flavorId = this.flavor;
    Flavors flavors = this.novaClient.flavors().list(true).execute();
    for (Flavor f : flavors) {
        if (f.getName().equals(this.flavor))
            flavorId = f.getId();//from   w w w . j a  va  2s.com
    }

    ServerForCreate serverForCreate = new ServerForCreate();
    serverForCreate.setName(applicationName + "." + channelName);
    serverForCreate.setFlavorRef(flavorId);
    serverForCreate.setImageRef(machineImageId);
    if (this.keypair != null)
        serverForCreate.setKeyName(this.keypair);
    serverForCreate.getSecurityGroups().add(new ServerForCreate.SecurityGroup(this.securityGroup));

    // User data will be retrieved (like on Amazon WS) on guest OS as
    // http://169.254.169.254/latest/user-data
    String userData = "applicationName=" + applicationName + "\nmachineName=" + channelName //TBD machineName=channelName
            + "\nchannelName=" + channelName + "\nipMessagingServer=" + ipMessagingServer;
    serverForCreate.setUserData(new String(Base64.encodeBase64(userData.getBytes())));

    final Server server = this.novaClient.servers().boot(serverForCreate).execute();
    System.out.println(server);

    // Wait for server to be in ACTIVE state, before associating floating IP
    try {
        final ScheduledThreadPoolExecutor timer = new ScheduledThreadPoolExecutor(1);
        timer.scheduleAtFixedRate(new Runnable() {

            @Override
            public void run() {
                Server checked = IaasOpenstack.this.novaClient.servers().show(server.getId()).execute();
                if ("ACTIVE".equals(checked.getStatus())) {
                    timer.shutdown();
                }
            }
        }, 10, 5, TimeUnit.SECONDS);
        timer.awaitTermination(120, TimeUnit.SECONDS);
    } catch (Exception ignore) {
        /*ignore*/ }

    // Associate floating IP
    if (this.floatingIpPool != null) {
        FloatingIps ips = this.novaClient.floatingIps().list().execute();

        FloatingIp ip = null;
        for (FloatingIp ip2 : ips) {
            System.out.println("ip=" + ip2);
            ip = ip2;
        }
        //FloatingIp ip = ips.allocate(this.floatingIpPool).execute();
        if (ip != null) {
            this.novaClient.servers().associateFloatingIp(server.getId(), ip.getIp()).execute();
        }
    }

    return server.getId();
}

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From source file:com.example.dwr.ticketcenter.CallCenter.java

/**
 * Create a new publish thread and start it
 *///from www.jav  a2 s . c om
public CallCenter() {
    // Start with some calls waiting
    addRandomKnownCall();
    addRandomUnknownCall();
    addRandomUnknownCall();
    addRandomUnknownCall();

    ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(1, new DaemonThreadFactory());
    //noinspection ThisEscapedInObjectConstruction
    executor.scheduleAtFixedRate(this, 2, 2, TimeUnit.SECONDS);
}

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