Example usage for java.lang Thread yield

List of usage examples for java.lang Thread yield

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Introduction

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

Prototype

public static native void yield();

Source Link

Document

A hint to the scheduler that the current thread is willing to yield its current use of a processor.

Usage

From source file:com.dbmojo.QueryExecutor.java

/** Try and grab a connection from the pool. Keep trying until we succeed.
  * If their is some sort of connection problem, the open() method will throw
  * an exception and bail//from   www  .j  a  v  a 2  s.c  o  m
  */
private void open(boolean update) throws Exception {
    if (this.pool != null) {
        this.conn = pool.checkOut(update);
        if (this.conn == null) {
            while (this.conn == null) {
                Thread.yield();
                this.conn = pool.checkOut(update);
            }
        }
    }
}

From source file:nya.miku.wishmaster.http.cloudflare.CloudflareUIHandler.java

/**
 *  ?-?  Cloudflare./*from ww w  .  j ava  2s. co m*/
 *    
 * @param e ? {@link CloudflareException}
 * @param chan  
 * @param activity ?,    ?  ( ?  ? ),
 *   ?   ? WebView ? Anti DDOS  ? javascript.
 * ???  ?  UI  ({@link Activity#runOnUiThread(Runnable)})
 * @param cfTask ?? 
 * @param callback ? {@link Callback}
 */
static void handleCloudflare(final CloudflareException e, final HttpChanModule chan, final Activity activity,
        final CancellableTask cfTask, final InteractiveException.Callback callback) {
    if (cfTask.isCancelled())
        return;

    if (!e.isRecaptcha()) { // ? anti DDOS 
        if (!CloudflareChecker.getInstance().isAvaibleAntiDDOS()) {
            //?  ?   ??  ,   ?  ? ?
            // ?, ?      ChanModule,    
            //  ?  ?  () cloudflare  ? ?
            //  ?  ? ? ?   ? CloudflareChecker
            while (!CloudflareChecker.getInstance().isAvaibleAntiDDOS())
                Thread.yield();
            if (!cfTask.isCancelled())
                activity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        callback.onSuccess();
                    }
                });
            return;
        }

        Cookie cfCookie = CloudflareChecker.getInstance().checkAntiDDOS(e, chan.getHttpClient(), cfTask,
                activity);
        if (cfCookie != null) {
            chan.saveCookie(cfCookie);
            if (!cfTask.isCancelled()) {
                activity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        callback.onSuccess();
                    }
                });
            }
        } else if (!cfTask.isCancelled()) {
            activity.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    callback.onError(activity.getString(R.string.error_cloudflare_antiddos));
                }
            });
        }
    } else { //  ? 
        final Recaptcha recaptcha;
        try {
            recaptcha = CloudflareChecker.getInstance().getRecaptcha(e, chan.getHttpClient(), cfTask);
        } catch (RecaptchaException recaptchaException) {
            if (!cfTask.isCancelled())
                activity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        callback.onError(activity.getString(R.string.error_cloudflare_get_captcha));
                    }
                });
            return;
        }

        if (!cfTask.isCancelled())
            activity.runOnUiThread(new Runnable() {
                @SuppressLint("InflateParams")
                @Override
                public void run() {
                    Context dialogContext = Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB
                            ? new ContextThemeWrapper(activity, R.style.Neutron_Medium)
                            : activity;
                    View view = LayoutInflater.from(dialogContext).inflate(R.layout.dialog_cloudflare_captcha,
                            null);
                    ImageView captchaView = (ImageView) view.findViewById(R.id.dialog_captcha_view);
                    final EditText captchaField = (EditText) view.findViewById(R.id.dialog_captcha_field);
                    captchaView.setImageBitmap(recaptcha.bitmap);

                    DialogInterface.OnClickListener process = new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            if (cfTask.isCancelled())
                                return;
                            PriorityThreadFactory.LOW_PRIORITY_FACTORY.newThread(new Runnable() {
                                @Override
                                public void run() {
                                    String answer = captchaField.getText().toString();
                                    Cookie cfCookie = CloudflareChecker.getInstance().checkRecaptcha(e,
                                            (ExtendedHttpClient) chan.getHttpClient(), cfTask,
                                            recaptcha.challenge, answer);
                                    if (cfCookie != null) {
                                        chan.saveCookie(cfCookie);
                                        if (!cfTask.isCancelled()) {
                                            activity.runOnUiThread(new Runnable() {
                                                @Override
                                                public void run() {
                                                    callback.onSuccess();
                                                }
                                            });
                                        }
                                    } else {
                                        //   (?,  ,    )
                                        handleCloudflare(e, chan, activity, cfTask, callback);
                                    }
                                }
                            }).start();
                        }
                    };

                    DialogInterface.OnCancelListener onCancel = new DialogInterface.OnCancelListener() {
                        @Override
                        public void onCancel(DialogInterface dialog) {
                            callback.onError(activity.getString(R.string.error_cloudflare_cancelled));
                        }
                    };

                    if (cfTask.isCancelled())
                        return;

                    final AlertDialog recaptchaDialog = new AlertDialog.Builder(dialogContext).setView(view)
                            .setPositiveButton(R.string.dialog_cloudflare_captcha_check, process)
                            .setOnCancelListener(onCancel).create();
                    recaptchaDialog.getWindow()
                            .setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
                    recaptchaDialog.setCanceledOnTouchOutside(false);
                    recaptchaDialog.show();

                    captchaView.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            recaptchaDialog.dismiss();
                            if (cfTask.isCancelled())
                                return;
                            PriorityThreadFactory.LOW_PRIORITY_FACTORY.newThread(new Runnable() {
                                @Override
                                public void run() {
                                    handleCloudflare(e, chan, activity, cfTask, callback);
                                }
                            }).start();
                        }
                    });
                }
            });
    }
}

From source file:eu.flatworld.worldexplorer.layer.nltl7.NLTL7HTTPProvider.java

@Override
public void run() {
    while (true) {
        while (getQueueSize() != 0) {
            Tile tile = peekTile();//from w  w w.j ava2 s.  com
            synchronized (tile) {
                String s = String.format(NLTL7Layer.HTTP_BASE, tile.getL(), tile.getX(), tile.getY());
                LogX.log(Level.FINER, s);
                GetMethod gm = new GetMethod(s);
                gm.setRequestHeader("User-Agent", WorldExplorer.USER_AGENT);
                try {
                    int response = client.executeMethod(gm);
                    LogX.log(Level.FINEST, NAME + " " + response + " " + s);
                    if (response == HttpStatus.SC_OK) {
                        InputStream is = gm.getResponseBodyAsStream();
                        BufferedImage bi = ImageIO.read(is);
                        is.close();
                        if (bi != null) {
                            tile.setImage(bi);
                        }
                    }
                } catch (Exception ex) {
                    LogX.log(Level.FINER, "", ex);
                } finally {
                    gm.releaseConnection();
                }
                LogX.log(Level.FINEST, NAME + " dequeueing: " + tile);
                unqueueTile(tile);
            }
            firePropertyChange(P_DATAREADY, null, tile);
            Thread.yield();
        }
        firePropertyChange(P_IDLE, false, true);
        try {
            Thread.sleep(QUEUE_SLEEP_TIME);
        } catch (Exception ex) {
        }
        ;
    }
}

From source file:com.zavakid.mushroom.impl.TestSinkQueue.java

/**
 * Test blocking when queue is empty/*from   ww  w.  j  a v  a 2  s.c  o m*/
 * 
 * @throws Exception
 */
@Test
public void testEmptyBlocking() throws Exception {
    final SinkQueue<Integer> q = new SinkQueue<Integer>(2);
    final Runnable trigger = mock(Runnable.class);
    // try consuming emtpy equeue and blocking
    Thread t = new Thread() {

        @Override
        public void run() {
            try {
                assertEquals("element", 1, (int) q.dequeue());
                q.consume(new Consumer<Integer>() {

                    public void consume(Integer e) {
                        assertEquals("element", 2, (int) e);
                        trigger.run();
                    }
                });
            } catch (InterruptedException e) {
                LOG.warn("Interrupted", e);
            }
        }
    };
    t.start();
    Thread.yield(); // Let the other block
    q.enqueue(1);
    q.enqueue(2);
    t.join();
    verify(trigger).run();
}

From source file:imitationLearning.WordSequenceCache.java

/**
 *
 *///from w w  w .  j  a  va 2s . c  o m
@SuppressWarnings("unchecked")
public void cleanup() {

    long now = System.currentTimeMillis();
    ArrayList<K> deleteKey = null;

    synchronized (cacheMap) {
        MapIterator itr = cacheMap.mapIterator();

        deleteKey = new ArrayList<K>((cacheMap.size() / 2) + 1);
        K key = null;
        CacheObject c = null;

        while (itr.hasNext()) {
            key = (K) itr.next();
            c = (CacheObject) itr.getValue();

            if (c != null && (now > (timeToLive + c.lastAccessed))) {
                deleteKey.add(key);
            }
        }
    }

    for (K key : deleteKey) {
        synchronized (cacheMap) {
            cacheMap.remove(key);
        }

        Thread.yield();
    }
}

From source file:org.apache.axis2.transport.mail.MailRequestResponseClient.java

private Message waitForReply(String msgId) throws Exception {
    Thread.yield();
    Thread.sleep(100);//from   w ww.j a va  2  s .  c o m

    Message reply = null;
    boolean replyNotFound = true;
    int retryCount = 50;
    while (replyNotFound) {
        log.debug("Checking for response ... with MessageID : " + msgId);
        reply = getMessage(msgId);
        if (reply != null) {
            replyNotFound = false;
        } else {
            if (retryCount-- > 0) {
                Thread.sleep(100);
            } else {
                break;
            }
        }
    }
    return reply;
}

From source file:eu.flatworld.worldexplorer.layer.bmng.BMNGHTTPProvider.java

@Override
public void run() {
    while (true) {
        while (getQueueSize() != 0) {
            Tile tile = peekTile();//w  w  w .  ja  v a 2 s.c om
            synchronized (tile) {
                String s = String.format(BMNGLayer.HTTP_BASE, year, month, tile.getL(), tile.getX(),
                        tile.getY());
                LogX.log(Level.FINER, s);
                GetMethod gm = new GetMethod(s);
                gm.setRequestHeader("User-Agent", WorldExplorer.USER_AGENT);
                try {
                    int response = client.executeMethod(gm);
                    LogX.log(Level.FINEST, NAME + " " + response + " " + s);
                    if (response == HttpStatus.SC_OK) {
                        InputStream is = gm.getResponseBodyAsStream();
                        BufferedImage bi = ImageIO.read(is);
                        is.close();
                        if (bi != null) {
                            tile.setImage(bi);
                        }
                    }
                } catch (Exception ex) {
                    LogX.log(Level.FINER, "", ex);
                } finally {
                    gm.releaseConnection();
                }
                LogX.log(Level.FINEST, NAME + " dequeueing: " + tile);
                unqueueTile(tile);
            }
            firePropertyChange(P_DATAREADY, null, tile);
            Thread.yield();
        }
        firePropertyChange(P_IDLE, false, true);
        try {
            Thread.sleep(QUEUE_SLEEP_TIME);
        } catch (Exception ex) {
        }
        ;
    }
}

From source file:org.ros.android.acm_serial.PollingInputStream.java

@Override
public synchronized int read(byte[] buffer, int offset, int length) throws IOException {
    int bytesRead = 0;
    if (length > 0) {
        while (available() == 0) {
            // Block until there are bytes to read.
            Thread.yield();
        }//from  ww w .j  av a  2 s.c  om
        synchronized (readBuffer) {
            bytesRead = Math.min(length, available());
            System.arraycopy(readBuffer, readPosition, buffer, offset, bytesRead);
            readPosition += bytesRead;
        }
    }
    return bytesRead;
}

From source file:bigbird.benchmark.HttpBenchmark.java

public void execute() {
    params = getHttpParams(socketTimeout, useHttp1_0);

    for (RequestGenerator g : requestGenerators) {
        g.setParameters(params);// w  w w .  j av  a  2  s  .c  o m
    }

    host = new HttpHost(url.getHost(), url.getPort(), url.getProtocol());

    ThreadPoolExecutor workerPool = new ThreadPoolExecutor(threads, threads, 5, TimeUnit.SECONDS,
            new LinkedBlockingQueue<Runnable>(), new ThreadFactory() {

                public Thread newThread(Runnable r) {
                    return new Thread(r, "ClientPool");
                }

            });
    workerPool.prestartAllCoreThreads();

    BenchmarkWorker[] workers = new BenchmarkWorker[threads];
    for (int i = 0; i < threads; i++) {
        workers[i] = new BenchmarkWorker(params, verbosity, requestGenerators[i], host, requests, keepAlive);
        workerPool.execute(workers[i]);
    }

    while (workerPool.getCompletedTaskCount() < threads) {
        Thread.yield();
        try {
            Thread.sleep(1000);
        } catch (InterruptedException ignore) {
        }
    }

    workerPool.shutdown();
    ResultProcessor.printResults(workers, host, url.toString(), contentLength);
}

From source file:uk.ac.cam.caret.sakai.rwiki.tool.service.impl.PopulateServiceImpl.java

public void init() throws IOException {
    ComponentManager cm = org.sakaiproject.component.cover.ComponentManager.getInstance();

    renderService = (RenderService) load(cm, RenderService.class.getName());
    siteService = (SiteService) load(cm, SiteService.class.getName());

    for (Iterator i = seedPages.iterator(); i.hasNext();) {
        RWikiCurrentObject seed = (RWikiCurrentObject) i.next();
        if (seed.getSource().startsWith("bundle:")) {
            String[] source = seed.getSource().split(":");
            ResourceLoader rl = new ResourceLoader(source[1]);
            seed.setContent(rl.getString(source[2]));
        } else {//from  www. j  a v  a  2 s  . c  o  m
            BufferedReader br = null;
            StringBuffer sb = new StringBuffer();
            try {
                br = new BufferedReader(
                        new InputStreamReader(getClass().getResourceAsStream(seed.getSource()), "UTF-8"));
                char[] c = new char[2048];

                for (int ic = br.read(c); ic >= 0; ic = br.read(c)) {
                    if (ic == 0)
                        Thread.yield();
                    else
                        sb.append(c, 0, ic);
                }
            } finally {
                br.close();
            }
            seed.setContent(sb.toString());
        }
    }
}