Example usage for java.lang Thread yield

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.callidusrobotics.swing.SwingConsole.java

@Override
public void render() {
    if (refreshSet.size() == 0) {
        return;/*w  ww . ja  v a 2 s . com*/
    }

    while (System.currentTimeMillis() - lastUpdate < REFRESH_RATE) {
        Thread.yield();
    }

    final Iterator<Integer> iterator = refreshSet.iterator();
    while (iterator.hasNext()) {
        final int index = iterator.next();

        // index = r * cols + c
        final int row = index / getWidth();
        final int col = index % getWidth();

        final int hpos = col * charWidth;
        final int vpos = row * charHeight;

        graphicsRenderer.setColor(consoleBuffer[row][col].background);
        graphicsRenderer.fillRect(hpos, vpos, charWidth, charHeight);
        graphicsRenderer.setColor(consoleBuffer[row][col].foreground);
        graphicsRenderer.drawString(String.valueOf(consoleBuffer[row][col].character), hpos + charHOffset,
                vpos + charVOffset);
    }
    refreshSet.clear();

    if (cursorIsVisible) {
        final int hpos = cursorCol * charWidth;
        final int vpos = cursorRow * charHeight;

        graphicsRenderer.setColor(cursor.foreground);
        graphicsRenderer.drawString(String.valueOf(cursor.character), hpos + charHOffset, vpos + charVOffset);
    }

    graphicsRenderer.drawImage(imageBuffer, 0, 0, null);
    icon.setImage(imageBuffer);
    label.setVisible(false);
    label.setVisible(true);

    lastUpdate = System.currentTimeMillis();
}

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From source file:test.com.azaptree.services.spring.application.SpringApplicationServiceTest.java

@Test
public void testSpringApplicationService_configClasses() throws Exception {
    final String[] args = { "classpath:spring-application-service.xml" };

    try {//from  w w w  . j  a  va2 s .c om
        new Thread(new Runnable() {

            @Override
            public void run() {
                try {
                    SpringApplicationService.main(args);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }).start();

        Thread.yield();

        ApplicationContext ctx = SpringApplicationService.getApplicationContext();
        while (ctx == null) {
            log.info("Waiting for ApplicationContext to initialize ...");
            Thread.sleep(100l);
            ctx = SpringApplicationService.getApplicationContext();
        }
        Assert.assertNotNull(ctx);
        final Properties props = ctx.getBean("systemProps", Properties.class);
        Assert.assertNotNull(props);
        Assert.assertFalse(CollectionUtils.isEmpty(props));

        final Map<String, String> env = ctx.getBean("env", Map.class);
        Assert.assertNotNull(env);
        Assert.assertFalse(CollectionUtils.isEmpty(env));

        log.info("bean count: {}", ctx.getBeanDefinitionCount());
        for (String beanName : ctx.getBeanDefinitionNames()) {
            log.info("beanName: {}", beanName);
        }
    } finally {
        SpringApplicationService.shutdown();
    }
}

---

From source file:org.apache.hadoop.hbase.rest.TestRowResource.java

private static Response deleteValue(String table, String row, String column) throws IOException {
    StringBuilder path = new StringBuilder();
    path.append('/');
    path.append(table);// w  ww.j  a va  2  s.co m
    path.append('/');
    path.append(row);
    path.append('/');
    path.append(column);
    Response response = client.delete(path.toString());
    Thread.yield();
    return response;
}

---

From source file:com.flowpowered.commons.ticking.Timer.java

/**
 * An accurate sync method that will attempt to run at the tps. It should be called once every tick.
 *//*from  w ww.  j  a  v a2 s  .  c o m*/
public void sync() {
    if (nextTick < 0) {
        throw new IllegalStateException("Timer was not started");
    }
    if (tps <= 0) {
        return;
    }
    try {
        // Sleep until the average sleep time is greater than the time remaining until next tick
        for (long time1 = getTime(), time2; nextTick - time1 > sleepDurations.average(); time1 = time2) {
            Thread.sleep(1);
            // Update average sleep time
            sleepDurations.add((time2 = getTime()) - time1);
        }
        // Slowly dampen sleep average if too high to avoid yielding too much
        sleepDurations.dampen();
        // Yield until the average yield time is greater than the time remaining until next tick
        for (long time1 = getTime(), time2; nextTick - time1 > yieldDurations.average(); time1 = time2) {
            Thread.yield();
            // Update average yield time
            yieldDurations.add((time2 = getTime()) - time1);
        }
    } catch (InterruptedException ignored) {
    }
    // Schedule next frame, drop frames if it's too late for next frame
    nextTick = Math.max(nextTick + 1000000000 / tps, getTime());
}

---

From source file:com.varaneckas.hawkscope.hotkey.X11HotkeyListener.java

/**
 * Displays Hawkscope menu at mouse location. Based on dirty hacks and 
 * blind experiments. Basically, it creates a window beneath the cursor
 * and executes a real mouse click with help of {@link Robot}. This way
 * invoking the menu works.// w w w  .  j  a  va2s .  c  o m
 * 
 * A bug that prevents the normal activity:
 * https://bugs.eclipse.org/bugs/show_bug.cgi?id=11570
 */
protected void displayHawkscopeMenu() {
    try {
        MenuFactory.getMainMenu().getSwtMenuObject().getDisplay().syncExec(new Runnable() {
            public void run() {
                if (MenuFactory.getMainMenu().getSwtMenuObject().isVisible()) {
                    MenuFactory.getMainMenu().forceHide();
                }
                try {
                    final StateEvent se = new StateEvent();
                    final Point loc = Display.getDefault().getCursorLocation();
                    se.setX(loc.x);
                    se.setY(loc.y);
                    hawkscopeLaunchShell.setLocation(loc.x - 30, loc.y - 30);
                    hawkscopeLaunchShell.setSize(60, 60);
                    hawkscopeLaunchShell.setVisible(true);
                    //for a weird reason, if the second shell is not
                    //displayed, the whole hack does not work.
                    supportShell.setLocation(loc.x - 30, loc.y - 30);
                    supportShell.setSize(60, 60);
                    supportShell.setVisible(true);
                    //need all the sleeps
                    //if duration is lowered, hack starts to randomly
                    //fail to work.
                    Thread.sleep(50L);
                    Thread.yield();
                    if (robo != null) {
                        robo.mousePress(InputEvent.BUTTON1_MASK);
                        Thread.sleep(50L);
                    }
                    MenuFactory.getMainMenu().getState().act(se);
                    Thread.sleep(50L);
                    if (robo != null) {
                        robo.mouseRelease(InputEvent.BUTTON1_MASK);
                    }
                    supportShell.setVisible(false);
                    hawkscopeLaunchShell.setVisible(false);
                } catch (final Exception e) {
                    throw new RuntimeException("Failed invoking hawkscope " + "menu with shortcut", e);
                }
            }
        });
    } catch (final Exception e) {
        throw new RuntimeException("Failed invoking hawkscope with " + "shortcut key", e);
    }
}

---

From source file:com.indeed.lsmtree.recordlog.TestBlockCompressedRecordFile.java

public void testRandom() throws IOException {
    final BlockCompressedRecordFile<String> recordFile = createBlockCache();
    final AtomicInteger done = new AtomicInteger(8);
    for (int i = 0; i < 8; i++) {
        final int index = i;
        new Thread(new Runnable() {
            @Override//from   ww w .j a  va  2  s.  c om
            public void run() {
                try {
                    final Random r = new Random(index);
                    for (int i = 0; i < 10000000; i++) {
                        int rand = r.nextInt(positions.size());
                        assertTrue(recordFile.get(positions.get(rand)).equals(strings.get(rand)));
                    }
                } catch (IOException e) {
                    throw new RuntimeException(e);
                } finally {
                    done.decrementAndGet();
                }
            }
        }).start();
    }
    while (done.get() > 0) {
        Thread.yield();
    }
    recordFile.close();
}

---

From source file:blue.ui.core.render.ProcessConsole.java

private void execWaitAndCollect(String commandLine, File currentWorkingDirectory) throws IOException {
    try {/*from  w  w w .  j a  v a 2 s  .c  o  m*/
        exec(commandLine, currentWorkingDirectory, true);
        process.waitFor();

        while ((stderrThread != null && stderrThread.isCollecting)
                || (stdoutThread != null && stdoutThread.isCollecting)) {
            Thread.yield();
            Thread.sleep(50);
        }

        destroy(true, false);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}

---

From source file:org.apache.hadoop.hbase.stargate.TestRowResource.java

Response deleteValue(String table, String row, String column) throws IOException {
    StringBuilder path = new StringBuilder();
    path.append('/');
    path.append(table);//  w w w . j a  va  2s.  c  o m
    path.append('/');
    path.append(row);
    path.append('/');
    path.append(column);
    Response response = client.delete(path.toString());
    Thread.yield();
    return response;
}

---

From source file:net.lightbody.bmp.proxy.jetty.http.nio.SocketChannelOutputStream.java

private void flushBuffer() throws IOException {
    while (_flush.hasRemaining()) {
        int len = _channel.write(_flush);
        if (len < 0)
            throw new IOException("EOF");
        if (len == 0) {
            // write channel full.  Try letting other threads have a go.
            Thread.yield();
            len = _channel.write(_flush);
            if (len < 0)
                throw new IOException("EOF");
            if (len == 0) {
                // still full.  need to  block until it is writable.
                if (_selector == null) {
                    _selector = Selector.open();
                    _channel.register(_selector, SelectionKey.OP_WRITE);
                }/*from w  w  w . ja v  a2 s . c  o  m*/

                _selector.select();
            }
        }
    }
}

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