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

Introduction

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

Prototype

public AtomicInteger(int initialValue)

Source Link

Document

Creates a new AtomicInteger with the given initial value.

Usage

From source file:alluxio.cli.MiniBenchmark.java

/**
 * @param args there are no arguments needed
 * @throws Exception if error occurs during tests
 *///from  w w w.j a  va 2s  . c om
public static void main(String[] args) throws Exception {
    if (!parseInputArgs(args)) {
        usage();
        System.exit(-1);
    }
    if (sHelp) {
        usage();
        System.exit(0);
    }

    CommonUtils.warmUpLoop();

    for (int i = 0; i < sIterations; ++i) {
        final AtomicInteger count = new AtomicInteger(0);
        final CyclicBarrier barrier = new CyclicBarrier(sConcurrency);
        ExecutorService executorService = Executors.newFixedThreadPool(sConcurrency);
        final AtomicLong runtime = new AtomicLong(0);
        for (int j = 0; j < sConcurrency; ++j) {
            switch (sType) {
            case READ:
                executorService.submit(new Runnable() {
                    @Override
                    public void run() {
                        try {
                            readFile(barrier, runtime, count.addAndGet(1));
                        } catch (Exception e) {
                            LOG.error("Failed to read file.", e);
                            System.exit(-1);
                        }
                    }
                });
                break;
            case WRITE:
                executorService.submit(new Runnable() {
                    @Override
                    public void run() {
                        try {
                            writeFile(barrier, runtime, count.addAndGet(1));
                        } catch (Exception e) {
                            LOG.error("Failed to write file.", e);
                            System.exit(-1);
                        }
                    }
                });
                break;
            default:
                throw new RuntimeException("Unsupported type.");
            }
        }
        executorService.shutdown();
        Preconditions.checkState(executorService.awaitTermination(1, TimeUnit.HOURS));
        double time = runtime.get() * 1.0 / sConcurrency / Constants.SECOND_NANO;
        System.out.printf("Iteration: %d; Duration: %f seconds; Aggregated throughput: %f GB/second.%n", i,
                time, sConcurrency * 1.0 * sFileSize / time / Constants.GB);
    }
}

From source file:com.github.ambry.store.DiskReformatter.java

public static void main(String[] args) throws Exception {
    VerifiableProperties properties = ToolUtils.getVerifiableProperties(args);
    DiskReformatterConfig config = new DiskReformatterConfig(properties);
    StoreConfig storeConfig = new StoreConfig(properties);
    ClusterMapConfig clusterMapConfig = new ClusterMapConfig(properties);
    ServerConfig serverConfig = new ServerConfig(properties);
    ClusterAgentsFactory clusterAgentsFactory = Utils.getObj(clusterMapConfig.clusterMapClusterAgentsFactory,
            clusterMapConfig, config.hardwareLayoutFilePath, config.partitionLayoutFilePath);
    try (ClusterMap clusterMap = clusterAgentsFactory.getClusterMap()) {
        StoreKeyConverterFactory storeKeyConverterFactory = Utils.getObj(
                serverConfig.serverStoreKeyConverterFactory, properties, clusterMap.getMetricRegistry());
        StoreKeyFactory storeKeyFactory = Utils.getObj(storeConfig.storeKeyFactory, clusterMap);
        DataNodeId dataNodeId = clusterMap.getDataNodeId(config.datanodeHostname, config.datanodePort);
        if (dataNodeId == null) {
            throw new IllegalArgumentException("Did not find node in clustermap with hostname:port - "
                    + config.datanodeHostname + ":" + config.datanodePort);
        }/* w  ww . j a v  a  2  s .c o  m*/
        DiskReformatter reformatter = new DiskReformatter(dataNodeId, Collections.EMPTY_LIST,
                config.fetchSizeInBytes, storeConfig, storeKeyFactory, clusterMap, SystemTime.getInstance(),
                storeKeyConverterFactory.getStoreKeyConverter());
        AtomicInteger exitStatus = new AtomicInteger(0);
        CountDownLatch latch = new CountDownLatch(config.diskMountPaths.length);
        for (int i = 0; i < config.diskMountPaths.length; i++) {
            int finalI = i;
            Runnable runnable = () -> {
                try {
                    reformatter.reformat(config.diskMountPaths[finalI], new File(config.scratchPaths[finalI]));
                    latch.countDown();
                } catch (Exception e) {
                    throw new IllegalStateException(e);
                }
            };
            Thread thread = Utils.newThread(config.diskMountPaths[finalI] + "-reformatter", runnable, true);
            thread.setUncaughtExceptionHandler((t, e) -> {
                exitStatus.set(1);
                logger.error("Reformatting {} failed", config.diskMountPaths[finalI], e);
                latch.countDown();
            });
            thread.start();
        }
        latch.await();
        System.exit(exitStatus.get());
    }
}

From source file:Main.java

/**
 * Generate a value suitable for use in {@ link #setId(int)}.
 * This value will not collide with ID values generated at build time by aapt for R.id.
 * http://stackoverflow.com/a/15442997/151957
 * @return a generated ID value/*w w w . ja  v a 2s  . c o  m*/
 */
public static int generateViewId() {
    AtomicInteger sNextGeneratedId = new AtomicInteger(10001);

    for (;;) {
        final int result = sNextGeneratedId.get();
        // aapt-generated IDs have the high byte nonzero; clamp to the range under that.
        int newValue = result + 1;
        if (newValue > 0x00FFFFFF)
            newValue = 1; // Roll over to 1, not 0.
        if (sNextGeneratedId.compareAndSet(result, newValue)) {
            return result;
        }
    }
}

From source file:Main.java

public static ExecutorService createEventsUnorderedDeliveryExecutor() {
    return Executors.newCachedThreadPool(new ThreadFactory() {
        private AtomicInteger cnt = new AtomicInteger(0);

        @Override//  w ww . j  a  v  a  2s .  co m
        public Thread newThread(Runnable r) {
            Thread t = new Thread(r, "Unordered Events Thread-" + cnt.incrementAndGet());
            t.setDaemon(true);
            // XXX perhaps set uncaught exception handler here according to resilience strategy
            return t;
        }
    });
}

From source file:Main.java

public static ExecutorService createEventsOrderedDeliveryExecutor() {
    return Executors.newSingleThreadExecutor(new ThreadFactory() {
        private AtomicInteger cnt = new AtomicInteger(0);

        @Override// w  w w  . j a v  a 2 s . com
        public Thread newThread(Runnable r) {
            Thread t = new Thread(r, "Ordered Events Thread-" + cnt.incrementAndGet());
            t.setDaemon(true);
            // XXX perhaps set uncaught exception handler here according to resilience strategy
            return t;
        }
    });
}

From source file:Main.java

public static ScheduledExecutorService createStatisticsExecutor() {
    return Executors.newScheduledThreadPool(Integer.getInteger(ORG_EHCACHE_STATISTICS_EXECUTOR_POOL_SIZE, 1),
            new ThreadFactory() {
                private AtomicInteger cnt = new AtomicInteger(0);

                @Override/*from w  ww. j av  a  2s .  c o  m*/
                public Thread newThread(Runnable r) {
                    Thread t = new Thread(r, "Statistics Thread-" + cnt.incrementAndGet());
                    t.setDaemon(true);
                    return t;
                }
            });
}

From source file:org.eclipse.swt.snippets.Snippet366.java

private static void makeOrientationGroup() {
    Group orientationGroup = new Group(shell, SWT.None);
    orientationGroup.setLayout(new RowLayout());
    orientationGroup.setText("Orientation group");

    final AtomicInteger prevDir = new AtomicInteger(0);
    final Button alignmentButton = new Button(orientationGroup, SWT.ARROW | SWT.RIGHT);
    alignmentButton.addListener(SWT.MouseDown, event -> {
        switch (prevDir.get()) {
        case 0://from  www.  j  ava2 s .c  o  m
            alignmentButton.setOrientation(SWT.LEFT_TO_RIGHT);
            prevDir.set(1);
            break;
        case 1:
            alignmentButton.setOrientation(SWT.RIGHT_TO_LEFT);
            prevDir.set(0);
            break;
        default:
            break;
        }
    });
}

From source file:io.bifroest.names.EnumerateDrainByTypeScheme.java

private int getNextDrainIndex(String type) {
    AtomicInteger currentCount;/*from  w ww  .j  a va2s . c  o  m*/
    if (typeToDrainsNamedSoFar.containsKey(type)) {
        currentCount = typeToDrainsNamedSoFar.get(type);
    } else {
        currentCount = new AtomicInteger(0);
        typeToDrainsNamedSoFar.put(type, currentCount);
    }
    return currentCount.incrementAndGet();
}

From source file:cz.pichlik.goodsentiment.common.CSVReader.java

public void readLines(RowProcessor processor) {
    ArrayList<String> val = new ArrayList<>();
    AtomicInteger counter = new AtomicInteger(0);
    csvParser.forEach((r) -> {/*from w w w  .jav  a 2s .  c  o m*/
        try {
            r.forEach((s) -> val.add(s));
            processor.accept(val, counter.getAndIncrement());
        } finally {
            val.clear();
        }
    });
}

From source file:AtomicPseudoRandom.java

public AtomicPseudoRandom(int seed) {
    this.seed = new AtomicInteger(seed);
}