Example usage for java.util.concurrent.atomic AtomicBoolean AtomicBoolean

Introduction

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

Prototype

public AtomicBoolean() 

Source Link

Document

Creates a new AtomicBoolean with initial value false .

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    AtomicBoolean atomicBoolean = new AtomicBoolean();

    System.out.println(atomicBoolean);
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    AtomicBoolean atomicBoolean = new AtomicBoolean();

    System.out.println(atomicBoolean.get());
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    AtomicBoolean atomicBoolean = new AtomicBoolean();

    System.out.println(atomicBoolean.getAndSet(true));
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    AtomicBoolean atomicBoolean = new AtomicBoolean();

    System.out.println(atomicBoolean.toString());
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    AtomicBoolean atomicBoolean = new AtomicBoolean();

    atomicBoolean.lazySet(true);/*from   w  w  w  .j  a v a2  s  . c om*/

}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    AtomicBoolean atomicBoolean = new AtomicBoolean();

    atomicBoolean.set(true);// w w w  . j  a va 2  s  .  c  o  m

    System.out.println(atomicBoolean);
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    AtomicBoolean atomicBoolean = new AtomicBoolean();

    atomicBoolean.weakCompareAndSet(true, true);

    System.out.println(atomicBoolean);
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    AtomicBoolean atomicBoolean = new AtomicBoolean();

    atomicBoolean.compareAndSet(true, true);

    System.out.println(atomicBoolean);
}

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From source file:com.yahoo.pulsar.testclient.PerformanceProducer.java

public static void main(String[] args) throws Exception {
    final Arguments arguments = new Arguments();
    JCommander jc = new JCommander(arguments);
    jc.setProgramName("pulsar-perf-producer");

    try {//from   w w  w .j a  va  2s .  c  o m
        jc.parse(args);
    } catch (ParameterException e) {
        System.out.println(e.getMessage());
        jc.usage();
        System.exit(-1);
    }

    if (arguments.help) {
        jc.usage();
        System.exit(-1);
    }

    if (arguments.destinations.size() != 1) {
        System.out.println("Only one topic name is allowed");
        jc.usage();
        System.exit(-1);
    }

    if (arguments.confFile != null) {
        Properties prop = new Properties(System.getProperties());
        prop.load(new FileInputStream(arguments.confFile));

        if (arguments.serviceURL == null) {
            arguments.serviceURL = prop.getProperty("brokerServiceUrl");
        }

        if (arguments.serviceURL == null) {
            arguments.serviceURL = prop.getProperty("webServiceUrl");
        }

        // fallback to previous-version serviceUrl property to maintain backward-compatibility
        if (arguments.serviceURL == null) {
            arguments.serviceURL = prop.getProperty("serviceUrl", "http://localhost:8080/");
        }

        if (arguments.authPluginClassName == null) {
            arguments.authPluginClassName = prop.getProperty("authPlugin", null);
        }

        if (arguments.authParams == null) {
            arguments.authParams = prop.getProperty("authParams", null);
        }
    }

    arguments.testTime = TimeUnit.SECONDS.toMillis(arguments.testTime);

    // Dump config variables
    ObjectMapper m = new ObjectMapper();
    ObjectWriter w = m.writerWithDefaultPrettyPrinter();
    log.info("Starting Pulsar perf producer with config: {}", w.writeValueAsString(arguments));

    // Read payload data from file if needed
    byte payloadData[];
    if (arguments.payloadFilename != null) {
        payloadData = Files.readAllBytes(Paths.get(arguments.payloadFilename));
    } else {
        payloadData = new byte[arguments.msgSize];
    }

    // Now processing command line arguments
    String prefixTopicName = arguments.destinations.get(0);
    List<Future<Producer>> futures = Lists.newArrayList();

    EventLoopGroup eventLoopGroup;
    if (SystemUtils.IS_OS_LINUX) {
        eventLoopGroup = new EpollEventLoopGroup(Runtime.getRuntime().availableProcessors(),
                new DefaultThreadFactory("pulsar-perf-producer"));
    } else {
        eventLoopGroup = new NioEventLoopGroup(Runtime.getRuntime().availableProcessors(),
                new DefaultThreadFactory("pulsar-perf-producer"));
    }

    ClientConfiguration clientConf = new ClientConfiguration();
    clientConf.setConnectionsPerBroker(arguments.maxConnections);
    clientConf.setStatsInterval(arguments.statsIntervalSeconds, TimeUnit.SECONDS);
    if (isNotBlank(arguments.authPluginClassName)) {
        clientConf.setAuthentication(arguments.authPluginClassName, arguments.authParams);
    }

    PulsarClient client = new PulsarClientImpl(arguments.serviceURL, clientConf, eventLoopGroup);

    ProducerConfiguration producerConf = new ProducerConfiguration();
    producerConf.setSendTimeout(0, TimeUnit.SECONDS);
    producerConf.setCompressionType(arguments.compression);
    // enable round robin message routing if it is a partitioned topic
    producerConf.setMessageRoutingMode(MessageRoutingMode.RoundRobinPartition);
    if (arguments.batchTime > 0) {
        producerConf.setBatchingMaxPublishDelay(arguments.batchTime, TimeUnit.MILLISECONDS);
        producerConf.setBatchingEnabled(true);
        producerConf.setMaxPendingMessages(arguments.msgRate);
    }

    for (int i = 0; i < arguments.numTopics; i++) {
        String topic = (arguments.numTopics == 1) ? prefixTopicName
                : String.format("%s-%d", prefixTopicName, i);
        log.info("Adding {} publishers on destination {}", arguments.numProducers, topic);

        for (int j = 0; j < arguments.numProducers; j++) {
            futures.add(client.createProducerAsync(topic, producerConf));
        }
    }

    final List<Producer> producers = Lists.newArrayListWithCapacity(futures.size());
    for (Future<Producer> future : futures) {
        producers.add(future.get());
    }

    log.info("Created {} producers", producers.size());

    Runtime.getRuntime().addShutdownHook(new Thread() {
        public void run() {
            printAggregatedStats();
        }
    });

    Collections.shuffle(producers);
    AtomicBoolean isDone = new AtomicBoolean();

    executor.submit(() -> {
        try {
            RateLimiter rateLimiter = RateLimiter.create(arguments.msgRate);

            long startTime = System.currentTimeMillis();

            // Send messages on all topics/producers
            long totalSent = 0;
            while (true) {
                for (Producer producer : producers) {
                    if (arguments.testTime > 0) {
                        if (System.currentTimeMillis() - startTime > arguments.testTime) {
                            log.info("------------------- DONE -----------------------");
                            printAggregatedStats();
                            isDone.set(true);
                            Thread.sleep(5000);
                            System.exit(0);
                        }
                    }

                    if (arguments.numMessages > 0) {
                        if (totalSent++ >= arguments.numMessages) {
                            log.info("------------------- DONE -----------------------");
                            printAggregatedStats();
                            isDone.set(true);
                            Thread.sleep(5000);
                            System.exit(0);
                        }
                    }
                    rateLimiter.acquire();

                    final long sendTime = System.nanoTime();

                    producer.sendAsync(payloadData).thenRun(() -> {
                        messagesSent.increment();
                        bytesSent.add(payloadData.length);

                        long latencyMicros = NANOSECONDS.toMicros(System.nanoTime() - sendTime);
                        recorder.recordValue(latencyMicros);
                        cumulativeRecorder.recordValue(latencyMicros);
                    }).exceptionally(ex -> {
                        log.warn("Write error on message", ex);
                        System.exit(-1);
                        return null;
                    });
                }
            }
        } catch (Throwable t) {
            log.error("Got error", t);
        }
    });

    // Print report stats
    long oldTime = System.nanoTime();

    Histogram reportHistogram = null;

    String statsFileName = "perf-producer-" + System.currentTimeMillis() + ".hgrm";
    log.info("Dumping latency stats to {}", statsFileName);

    PrintStream histogramLog = new PrintStream(new FileOutputStream(statsFileName), false);
    HistogramLogWriter histogramLogWriter = new HistogramLogWriter(histogramLog);

    // Some log header bits
    histogramLogWriter.outputLogFormatVersion();
    histogramLogWriter.outputLegend();

    while (true) {
        try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
            break;
        }

        if (isDone.get()) {
            break;
        }

        long now = System.nanoTime();
        double elapsed = (now - oldTime) / 1e9;

        double rate = messagesSent.sumThenReset() / elapsed;
        double throughput = bytesSent.sumThenReset() / elapsed / 1024 / 1024 * 8;

        reportHistogram = recorder.getIntervalHistogram(reportHistogram);

        log.info(
                "Throughput produced: {}  msg/s --- {} Mbit/s --- Latency: mean: {} ms - med: {} - 95pct: {} - 99pct: {} - 99.9pct: {} - 99.99pct: {} - Max: {}",
                throughputFormat.format(rate), throughputFormat.format(throughput),
                dec.format(reportHistogram.getMean() / 1000.0),
                dec.format(reportHistogram.getValueAtPercentile(50) / 1000.0),
                dec.format(reportHistogram.getValueAtPercentile(95) / 1000.0),
                dec.format(reportHistogram.getValueAtPercentile(99) / 1000.0),
                dec.format(reportHistogram.getValueAtPercentile(99.9) / 1000.0),
                dec.format(reportHistogram.getValueAtPercentile(99.99) / 1000.0),
                dec.format(reportHistogram.getMaxValue() / 1000.0));

        histogramLogWriter.outputIntervalHistogram(reportHistogram);
        reportHistogram.reset();

        oldTime = now;
    }

    client.close();
}

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From source file:com.offbynull.portmapper.common.ProcessUtils.java

/**
 * Run a process and dump the stdout stream to a string.
 * @param timeout maximum amount of time the process can take to run
 * @param command command//from w w w .j  a va 2 s.c  o  m
 * @param args arguments
 * @return stdout from the process dumped to a string
 * @throws IOException if the process encounters an error
 * @throws NullPointerException if any arguments are {@code null} or contains {@code null}
 * @throws IllegalArgumentException any numeric argument is negative
 */
public static String runProcessAndDumpOutput(long timeout, String command, String... args) throws IOException {
    Validate.notNull(command);
    Validate.noNullElements(args);
    Validate.inclusiveBetween(0L, Long.MAX_VALUE, timeout);

    String[] pbCmd = new String[args.length + 1];
    pbCmd[0] = command;
    System.arraycopy(args, 0, pbCmd, 1, args.length);

    ProcessBuilder builder = new ProcessBuilder(pbCmd);

    final AtomicBoolean failedFlag = new AtomicBoolean();

    Timer timer = new Timer("Process timeout timer", true);
    Process proc = null;
    try {
        proc = builder.start();

        final Process finalProc = proc;
        timer.schedule(new TimerTask() {

            @Override
            public void run() {
                failedFlag.set(true);
                finalProc.destroy();
            }
        }, timeout);

        String ret = IOUtils.toString(proc.getInputStream());
        if (failedFlag.get()) {
            throw new IOException("Process failed");
        }

        return ret;
    } finally {
        if (proc != null) {
            proc.destroy();
        }
        timer.cancel();
        timer.purge();
    }
}

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