Example usage for java.lang Thread setPriority

Introduction

In this page you can find the example usage for java.lang Thread setPriority.

Prototype

public final void setPriority(int newPriority) 

Source Link

Document

Changes the priority of this thread.

Usage

From source file:com.petpet.c3po.controller.Controller.java

/**
 * Starts all the workers. Including the adaptors, consolidators and gatherer.
 *
 * @param collection//from w w w .  j  a v a 2  s .c  o  m
 *          the name of the collection that is processed.
 * @param adaptThreads
 *          the number of adaptor threads in the pool.
 * @param consThreads
 *          the number of consolidator threads in the pool.
 * @param type
 *          the type of the adaptors.
 * @param adaptorcnf
 *          the adaptor configuration.
 */
private void startWorkers(String collection, int adaptThreads, int consThreads, String type,
        Map<String, String> adaptorcnf) {

    this.adaptorPool = Executors.newFixedThreadPool(adaptThreads);
    this.consolidatorPool = Executors.newFixedThreadPool(consThreads);

    List<Consolidator> consolidators = new ArrayList<Consolidator>();

    LOG.debug("Initializing consolidators...");
    for (int i = 0; i < consThreads; i++) {
        Consolidator c = new Consolidator(this.persistence, this.processingQueue);
        consolidators.add(c);
        this.consolidatorPool.submit(c);
    }

    // no more consolidators can be added.
    this.consolidatorPool.shutdown();

    List<ProcessingRule> rules = this.getRules(collection);

    Collections.sort(rules, new Comparator<ProcessingRule>() {

        // sorts from descending
        @Override
        public int compare(ProcessingRule r1, ProcessingRule r2) {
            int first = this.fixPriority(r2.getPriority());
            int second = this.fixPriority(r1.getPriority());
            return new Integer(first).compareTo(new Integer(second));
        }

        private int fixPriority(int prio) {
            if (prio < 0)
                return 0;

            if (prio > 1000)
                return 1000;

            return prio;
        }

    });

    LOG.debug("Initializing adaptors...");
    for (int i = 0; i < adaptThreads; i++) {
        AbstractAdaptor a = this.getAdaptor(type);

        a.setCache(this.persistence.getCache());
        a.setQueue(this.processingQueue);
        a.setGatherer(this.gatherer);
        a.setConfig(adaptorcnf);
        a.setRules(rules);
        a.configure();

        this.adaptorPool.submit(a);
    }

    // no more adaptors can be added.
    this.adaptorPool.shutdown();

    Thread gathererThread = new Thread(this.gatherer, "MetadataGatherer");
    gathererThread.setPriority(Thread.NORM_PRIORITY + 1);
    gathererThread.start();

    try {

        // kills the pool and all adaptor workers after a month;
        boolean adaptorsTerminated = this.adaptorPool.awaitTermination(2678400, TimeUnit.SECONDS);

        if (adaptorsTerminated) {
            this.stopConsoldators(consolidators);
            this.consolidatorPool.awaitTermination(2678400, TimeUnit.SECONDS);

        } else {
            System.out.println("Oh my, It seems something went wrong. This process took too long");
            LOG.error("Time out occurred, process was terminated");
        }

    } catch (InterruptedException e) {
        LOG.error("An error occurred: {}", e.getMessage());
    } finally {
        String path = FileUtils.getTempDirectory().getPath() + File.separator + "c3poarchives";
        FileUtils.deleteQuietly(new File(path));
    }

    // allow every rule to execute its tasks after job handling is done, like
    // printing statistics or cleaning up
    for (ProcessingRule processingRule : rules) {
        processingRule.onCommandFinished();
    }

    ActionLog log = new ActionLog(collection, ActionLog.UPDATED_ACTION);
    new ActionLogHelper(this.persistence).recordAction(log);
}

---

From source file:org.batoo.jpa.benchmark.BenchmarkTest.java

private ThreadPoolExecutor createExecutor(BlockingQueue<Runnable> workQueue) {
    final AtomicInteger nextThreadNo = new AtomicInteger(0);

    final ThreadPoolExecutor executor = new ThreadPoolExecutor(//
            BenchmarkTest.THREAD_COUNT, BenchmarkTest.THREAD_COUNT, // min max threads
            0L, TimeUnit.MILLISECONDS, // the keep alive time - hold it forever
            workQueue, new ThreadFactory() {

                @Override//  w w  w .j a  va  2s . c o  m
                public Thread newThread(Runnable r) {
                    final Thread t = new Thread(r);
                    t.setDaemon(true);
                    t.setPriority(Thread.NORM_PRIORITY);
                    t.setName("Benchmark-" + nextThreadNo.get());

                    BenchmarkTest.this.threadIds[nextThreadNo.getAndIncrement()] = t.getId();

                    return t;
                }
            });

    executor.prestartAllCoreThreads();

    return executor;
}

---

From source file:net.xmind.workbench.internal.notification.SiteEventNotificationService.java

private void showNotifications(final List<ISiteEvent> events) {
    if (workbench == null)
        return;/*from w ww.jav a 2  s. c om*/
    if (canShowNotifications()) {
        doShowNotifications(events);
    } else {
        Thread thread = new Thread(new Runnable() {
            public void run() {
                while (!canShowNotifications()) {
                    try {
                        Thread.sleep(5000);
                    } catch (InterruptedException e) {
                        return;
                    }
                }
                doShowNotifications(events);
            }
        });
        thread.setPriority(Thread.MIN_PRIORITY);
        thread.setDaemon(true);
        thread.setName("WaitToShowNotifications"); //$NON-NLS-1$
        thread.start();
    }
}

---

From source file:nl.privacybarometer.privacyvandaag.service.FetcherService.java

private int refreshFeeds(final long keepDateBorderTime) {
    ContentResolver cr = getContentResolver();
    final Cursor cursor = cr.query(FeedColumns.CONTENT_URI, FeedColumns.PROJECTION_ID, null, null, null);
    int nbFeed = (cursor != null) ? cursor.getCount() : 0;

    ExecutorService executor = Executors.newFixedThreadPool(THREAD_NUMBER, new ThreadFactory() {
        @Override/*from www.  j a v a2s. c  om*/
        public Thread newThread(Runnable r) {
            Thread t = new Thread(r);
            t.setPriority(Thread.MIN_PRIORITY);
            return t;
        }
    });

    CompletionService<Integer> completionService = new ExecutorCompletionService<>(executor);
    while (cursor != null && cursor.moveToNext()) {
        final String feedId = cursor.getString(0);
        completionService.submit(new Callable<Integer>() {
            @Override
            public Integer call() {
                int result = 0;
                try {
                    result = refreshFeed(feedId, keepDateBorderTime);
                } catch (Exception e) {
                    Log.e(TAG, "Error refreshing feed " + e.getMessage());
                }
                return result;
            }
        });
    }
    if (cursor != null)
        cursor.close();

    int globalResult = 0;
    for (int i = 0; i < nbFeed; i++) {
        try {
            Future<Integer> f = completionService.take(); // ModPrivacyVandaag: the count of new articles after a feed is refreshed
            globalResult += f.get();
        } catch (Exception e) {
            Log.e(TAG, "Error counting new articles " + e.getMessage());
        }
    }

    executor.shutdownNow(); // To purge all threads

    return globalResult; // ModPrivacyVandaag: As far as I can see: this contains the number of new articles from a refresh of the feeds.
}

---

From source file:org.openstreetmap.josm.tools.Utils.java

/**
 * Creates a new {@link ThreadFactory} which creates threads with names according to {@code nameFormat}.
 * @param nameFormat a {@link String#format(String, Object...)} compatible name format; its first argument is a unique thread index
 * @param threadPriority the priority of the created threads, see {@link Thread#setPriority(int)}
 * @return a new {@link ThreadFactory}//  w w w .j  a va 2 s.c  o m
 */
public static ThreadFactory newThreadFactory(final String nameFormat, final int threadPriority) {
    return new ThreadFactory() {
        final AtomicLong count = new AtomicLong(0);

        @Override
        public Thread newThread(final Runnable runnable) {
            final Thread thread = new Thread(runnable,
                    String.format(Locale.ENGLISH, nameFormat, count.getAndIncrement()));
            thread.setPriority(threadPriority);
            return thread;
        }
    };
}

---

From source file:tvbrowser.TVBrowser.java

private static void startPeriodicSaveSettings() {
    // Every 5 minutes we store all the settings so they are stored in case of
    // an unexpected failure
    Thread saveThread = new Thread("Store settings periodically") {
        public void run() {
            mSaveThreadShouldStop = false;
            while (!mSaveThreadShouldStop) {
                try {
                    Thread.sleep(5 * 60 * 1000);
                } catch (Exception exc) {
                    // ignore
                }/*w ww.  j  a  v a 2s.co  m*/

                if (!mSaveThreadShouldStop && !TvDataUpdater.getInstance().isDownloading()) {
                    flushSettings(true);
                }
            }
        }
    };
    saveThread.setPriority(Thread.MIN_PRIORITY);
    saveThread.start();
}

---

From source file:com.tealeaf.NativeShim.java

public void sendXHR(int id, String method, String url, String data, boolean async, String[] requestHeaders) {
    HashMap<String, String> requestHeadersMap = new HashMap<String, String>();
    if (requestHeaders != null) {
        for (int i = 0; i < requestHeaders.length / 2; i++) {
            requestHeadersMap.put(requestHeaders[i * 2], requestHeaders[i * 2 + 1]);
        }//from  w  w  w. j  a  v a  2s .  c  o m
    }
    XMLHttpRequest xhr = new XMLHttpRequest(id, method, url, data, async, requestHeadersMap);

    if (async) {
        Thread xhrThread = new Thread(xhr);
        xhrThread.setPriority(Thread.MIN_PRIORITY + 2);
        xhrThread.start();
    } else {
        xhr.run();
    }
}

---

From source file:org.batoo.jpa.benchmark.BenchmarkTest.java

/**
 * //  ww w.j av a 2s  .  c  om
 * @since 2.0.0
 */
@Before
public void measureBefore() {
    this.profilingQueue = Lists.newArrayList();

    final Thread t = new Thread(new Runnable() {

        @Override
        public void run() {
            BenchmarkTest.this.measureTimes(BenchmarkTest.this.profilingQueue);
        }
    }, "Profiler");

    t.setDaemon(true);
    t.setPriority(Thread.MAX_PRIORITY);
    t.start();
}

---

From source file:gate.corpora.twitter.Population.java

@Override
protected List<Action> buildActions(final NameBearerHandle handle) {
    List<Action> actions = new ArrayList<Action>();

    if (!(handle.getTarget() instanceof Corpus))
        return actions;

    actions.add(new AbstractAction("Populate from Twitter JSON files") {
        private static final long serialVersionUID = -8511779592856786327L;

        @Override//from   w  ww  . j av  a 2 s  .  com
        public void actionPerformed(ActionEvent e) {
            final PopulationDialogWrapper dialog = new PopulationDialogWrapper();

            // If no files were selected then just stop
            try {
                final List<URL> fileUrls = dialog.getFileUrls();
                if ((fileUrls == null) || fileUrls.isEmpty()) {
                    return;
                }

                // Run the population in a separate thread so we don't lock up the GUI
                Thread thread = new Thread(Thread.currentThread().getThreadGroup(),
                        "Twitter JSON Corpus Populator") {
                    public void run() {
                        try {
                            for (URL fileUrl : fileUrls) {
                                populateCorpus((Corpus) handle.getTarget(), fileUrl, dialog.getEncoding(),
                                        dialog.getContentKeys(), dialog.getFeatureKeys(),
                                        dialog.getTweetsPerDoc());
                            }
                        } catch (ResourceInstantiationException e) {
                            e.printStackTrace();
                        }
                    }
                };
                thread.setPriority(Thread.MIN_PRIORITY);
                thread.start();
            } catch (MalformedURLException e0) {
                e0.printStackTrace();
            }
        }
    });

    return actions;
}

---

From source file:self.philbrown.droidQuery.Ajax.java

/**
 * Constructor//from   ww  w. j ava  2s .c  o  m
 * @param options used to configure this task
 */
public Ajax(AjaxOptions options) {
    this.options = options;
    if (options.url() == null) {
        throw new NullPointerException("Cannot call Ajax with null URL!");
    }
    this.mHandler = new Handler();
    this.executor = Executors.newFixedThreadPool(1, new ThreadFactory() {
        @Override
        public Thread newThread(Runnable runnable) {
            Thread t = new Thread(runnable);
            t.setPriority(Ajax.this.options.priority());
            return t;
        }
    });
}

---

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