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:org.apache.hadoop.hbase.rest.TestGetAndPutResource.java

@Test
public void testMultiColumnGetXML() throws Exception {
    String path = "/" + TABLE + "/fakerow";
    CellSetModel cellSetModel = new CellSetModel();
    RowModel rowModel = new RowModel(ROW_1);
    rowModel.addCell(new CellModel(Bytes.toBytes(COLUMN_1), Bytes.toBytes(VALUE_1)));
    rowModel.addCell(new CellModel(Bytes.toBytes(COLUMN_2), Bytes.toBytes(VALUE_2)));
    rowModel.addCell(new CellModel(Bytes.toBytes(COLUMN_3), Bytes.toBytes(VALUE_2)));
    cellSetModel.addRow(rowModel);/*www.j a  v a2  s . co  m*/
    StringWriter writer = new StringWriter();
    xmlMarshaller.marshal(cellSetModel, writer);

    Response response = client.put(path, Constants.MIMETYPE_XML, Bytes.toBytes(writer.toString()));
    Thread.yield();

    // make sure the fake row was not actually created
    response = client.get(path, Constants.MIMETYPE_XML);
    assertEquals(response.getCode(), 404);

    // Try getting all the column values at once.
    path = "/" + TABLE + "/" + ROW_1 + "/" + COLUMN_1 + "," + COLUMN_2 + "," + COLUMN_3;
    response = client.get(path, Constants.MIMETYPE_XML);
    assertEquals(200, response.getCode());
    CellSetModel cellSet = (CellSetModel) xmlUnmarshaller
            .unmarshal(new ByteArrayInputStream(response.getBody()));
    assertTrue(cellSet.getRows().size() == 1);
    assertTrue(cellSet.getRows().get(0).getCells().size() == 3);
    List<CellModel> cells = cellSet.getRows().get(0).getCells();

    assertTrue(containsCellModel(cells, COLUMN_1, VALUE_1));
    assertTrue(containsCellModel(cells, COLUMN_2, VALUE_2));
    assertTrue(containsCellModel(cells, COLUMN_3, VALUE_2));
    response = deleteRow(TABLE, ROW_1);
    assertEquals(response.getCode(), 200);
}

---

From source file:org.callimachusproject.management.CalliServer.java

protected void submit(final Callable<Void> task) throws Exception {
    checkForErrors();//w ww  . j a v a2  s . c o  m
    executor.submit(new Runnable() {
        public void run() {
            begin();
            try {
                task.call();
            } catch (Exception exc) {
                saveError(exc);
            } finally {
                end();
            }
        }
    });
    Thread.yield();
}

---

From source file:edu.illinois.enforcemop.examples.jbosscache.PessimisticSyncReplTxTest.java

public void testPut() throws Exception {
    final CacheSPI<Object, Object> c1 = this.cache1;

    Thread t1 = new Thread() {
        public void run() {
            try {
                lock.acquire();/*from   w  w  w  .j  a va2s.c  om*/
                c1.put("/a/b/c", "age", 38);

                lock.release();
                Thread.sleep(300);
                Thread.yield();

                lock.acquire();
                c1.put("/a/b/c", "age", 39);

                lock.release();
                assertEquals(39, c1.get("/a/b/c", "age"));
            } catch (Throwable ex) {
                ex.printStackTrace();
                t1_ex = ex;
            } finally {
                lock.release();
            }
        }
    };

    Thread t2 = new Thread() {
        public void run() {
            try {
                Thread.sleep(100);
                Thread.yield();
                lock.acquire();
                // Should replicate the value right away.
                Integer val = (Integer) cache2.get("/a/b/c", "age");
                assertEquals(new Integer(38), val);
                lock.release();
                Thread.sleep(300);
                Thread.yield();
                Thread.sleep(500);
                lock.acquire();
                val = (Integer) cache2.get("/a/b/c", "age");
                lock.release();
                assertEquals(new Integer(39), val);
            } catch (Throwable ex) {
                ex.printStackTrace();
                t2_ex = ex;
            } finally {
                lock.release();
            }
        }
    };

    // Let the game start
    t1.start();
    t2.start();

    // Wait for thread to die but put an insurance of 5 seconds on it.
    t1.join();
    t2.join();
    if (t1_ex != null) {
        fail("Thread1 failed: " + t1_ex);
    }
    if (t2_ex != null) {
        fail("Thread2 failed: " + t2_ex);
    }
}

---

From source file:br.com.carlosrafaelgn.fplay.list.RadioStationList.java

public void fetchIcecast(Context context, String genre, String searchTerm) {
    while (!readyToFetch)
        Thread.yield();
    cancel();/*w  w w  . j av  a2 s  .c o m*/
    clear();
    loadingProcessChanged(true);
    final Thread t = new Thread(this, "Icecast Station Fetcher Thread");
    isSavingFavorites = false;
    genreToFetch = genre;
    searchTermToFetch = searchTerm;
    this.context = context;
    readyToFetch = false;
    try {
        t.start();
    } catch (Throwable ex) {
        readyToFetch = true;
        loadingProcessChanged(false);
    }
}

---

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

@Test
public void testSuffixGlobbingXMLWithNewScanner() throws IOException, JAXBException {
    String path = "/" + TABLE + "/fakerow"; // deliberate nonexistent row

    CellSetModel cellSetModel = new CellSetModel();
    RowModel rowModel = new RowModel(ROW_1);
    rowModel.addCell(new CellModel(Bytes.toBytes(COLUMN_1), Bytes.toBytes(VALUE_1)));
    rowModel.addCell(new CellModel(Bytes.toBytes(COLUMN_2), Bytes.toBytes(VALUE_2)));
    cellSetModel.addRow(rowModel);/*from ww w .  j  av a  2  s .c o m*/
    rowModel = new RowModel(ROW_2);
    rowModel.addCell(new CellModel(Bytes.toBytes(COLUMN_1), Bytes.toBytes(VALUE_3)));
    rowModel.addCell(new CellModel(Bytes.toBytes(COLUMN_2), Bytes.toBytes(VALUE_4)));
    cellSetModel.addRow(rowModel);
    StringWriter writer = new StringWriter();
    xmlMarshaller.marshal(cellSetModel, writer);
    Response response = client.put(path, Constants.MIMETYPE_XML, Bytes.toBytes(writer.toString()));
    Thread.yield();

    // make sure the fake row was not actually created
    response = client.get(path, Constants.MIMETYPE_XML);
    assertEquals(response.getCode(), 404);

    // check that all of the values were created
    StringBuilder query = new StringBuilder();
    query.append('/');
    query.append(TABLE);
    query.append('/');
    query.append("testrow*");
    response = client.get(query.toString(), Constants.MIMETYPE_XML);
    assertEquals(response.getCode(), 200);
    assertEquals(Constants.MIMETYPE_XML, response.getHeader("content-type"));
    CellSetModel cellSet = (CellSetModel) xmlUnmarshaller
            .unmarshal(new ByteArrayInputStream(response.getBody()));
    assertTrue(cellSet.getRows().size() == 2);

    response = deleteRow(TABLE, ROW_1);
    assertEquals(response.getCode(), 200);
    response = deleteRow(TABLE, ROW_2);
    assertEquals(response.getCode(), 200);
}

---

From source file:br.com.carlosrafaelgn.fplay.list.RadioStationList.java

public void fetchFavorites(Context context) {
    while (!readyToFetch)
        Thread.yield();
    cancel();//  w  w w . ja  v a  2 s  . co  m
    clear();
    loadingProcessChanged(true);
    final Thread t = new Thread(this, "Icecast Favorite Stations Fetcher Thread");
    isSavingFavorites = false;
    genreToFetch = null;
    searchTermToFetch = null;
    this.context = context;
    readyToFetch = false;
    try {
        t.start();
    } catch (Throwable ex) {
        readyToFetch = true;
        loadingProcessChanged(false);
    }
}

---

From source file:com.jcraft.weirdx.Client.java

private static final void reqGrabServer(Client c) throws IOException {
    synchronized (LOCK) {
        for (int i = 1; i < clients.length; i++) {
            if (i == c.index)
                continue;
            if (clients[i] == null)
                continue;
            if (!clients[i].isAlive())
                continue;
            clients[i].serverisgrabed = true;
        }/*ww  w. j  a va2  s  . co m*/
    }
    int i = 0;
    int ii = 100;
    while (true) {
        try {
            Thread.yield();
        } catch (Exception e) {
        }
        for (i = 1; i < clients.length; i++) {
            if (i == c.index || clients[i] == null || !clients[i].isAlive() || clients[i].waitforreq
                    || clients[i].suspended)
                continue;
            //   System.out.println("wait for: "+i);
            i = 0;
            break;
        }
        if (i != 0)
            break;
        ii--;
        if (ii == 0) {
            //   System.out.println("give up..: "+i);
            break;
        }
    }
}

---

From source file:br.com.carlosrafaelgn.fplay.list.RadioStationList.java

public void saveFavorites(Context context) {
    while (!readyToFetch)
        Thread.yield();
    synchronized (favoritesSync) {
        if (!favoritesLoaded || !favoritesChanged)
            return;
    }//from  w  w w  .  j  a  va2 s . co m
    final Thread t = new Thread(this, "Icecast Favorite Stations Storer Thread");
    isSavingFavorites = true;
    genreToFetch = null;
    searchTermToFetch = null;
    this.context = context;
    readyToFetch = false;
    try {
        t.start();
    } catch (Throwable ex) {
        readyToFetch = true;
    }
}

---

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

@Test
public void testSuffixGlobbingXML() throws IOException, JAXBException {
    String path = "/" + TABLE + "/fakerow"; // deliberate nonexistent row

    CellSetModel cellSetModel = new CellSetModel();
    RowModel rowModel = new RowModel(ROW_1);
    rowModel.addCell(new CellModel(Bytes.toBytes(COLUMN_1), Bytes.toBytes(VALUE_1)));
    rowModel.addCell(new CellModel(Bytes.toBytes(COLUMN_2), Bytes.toBytes(VALUE_2)));
    cellSetModel.addRow(rowModel);// w ww.j  av a  2s .  co  m
    rowModel = new RowModel(ROW_2);
    rowModel.addCell(new CellModel(Bytes.toBytes(COLUMN_1), Bytes.toBytes(VALUE_3)));
    rowModel.addCell(new CellModel(Bytes.toBytes(COLUMN_2), Bytes.toBytes(VALUE_4)));
    cellSetModel.addRow(rowModel);
    StringWriter writer = new StringWriter();
    xmlMarshaller.marshal(cellSetModel, writer);
    Response response = client.put(path, Constants.MIMETYPE_XML, Bytes.toBytes(writer.toString()));
    Thread.yield();

    // make sure the fake row was not actually created
    response = client.get(path, Constants.MIMETYPE_XML);
    assertEquals(response.getCode(), 404);

    // check that all of the values were created
    StringBuilder query = new StringBuilder();
    query.append('/');
    query.append(TABLE);
    query.append('/');
    query.append("testrow*");
    query.append('/');
    query.append(COLUMN_1);
    response = client.get(query.toString(), Constants.MIMETYPE_XML);
    assertEquals(response.getCode(), 200);
    assertEquals(Constants.MIMETYPE_XML, response.getHeader("content-type"));
    CellSetModel cellSet = (CellSetModel) xmlUnmarshaller
            .unmarshal(new ByteArrayInputStream(response.getBody()));
    List<RowModel> rows = cellSet.getRows();
    assertTrue(rows.size() == 2);
    for (RowModel row : rows) {
        assertTrue(row.getCells().size() == 1);
        assertEquals(COLUMN_1, Bytes.toString(row.getCells().get(0).getColumn()));
    }
    response = deleteRow(TABLE, ROW_1);
    assertEquals(response.getCode(), 200);
    response = deleteRow(TABLE, ROW_2);
    assertEquals(response.getCode(), 200);
}

---

From source file:com.ubuntuone.android.files.service.MetaService.java

/**
 * Given parents resource path and {@link ArrayList} of {@link NodeInfo}s of
 * its children, syncs cached info of these children. Updating children in
 * one method enables us to make use of database transaction.<br />
 * <ul>/*  w w  w .ja  v  a2  s  . c  o m*/
 * <li>- inserts if child is new</li>
 * <li>- updates if child has changed [thus marks is_cached = false]</li>
 * <li>- deletes if child is missing [dead node]</li>
 * </ul>
 * 
 * @param parentResourcePath
 *            the resource path of childrens parent
 * @param children
 *            {@link NodeInfo}s of the parents children
 * @throws OperationApplicationException 
 * @throws RemoteException 
 */
public void getDirectoryNode(final String resourcePath, final ResultReceiver receiver) {
    Log.i(TAG, "getDirectoryNode()");
    final String[] projection = new String[] { Nodes._ID, Nodes.NODE_RESOURCE_PATH, Nodes.NODE_GENERATION,
            Nodes.NODE_DATA };
    final String selection = Nodes.NODE_RESOURCE_PATH + "=?";

    final Set<Integer> childrenIds = MetaUtilities.getChildrenIds(resourcePath);

    final ArrayList<ContentProviderOperation> operations = new ArrayList<ContentProviderOperation>();

    final Bundle data = new Bundle();
    data.putString(EXTRA_RESOURCE_PATH, resourcePath);

    api.listDirectory(resourcePath, new U1NodeListener() {
        @Override
        public void onStart() {
            if (receiver != null)
                receiver.send(Status.RUNNING, data);
        }

        @Override
        public void onSuccess(U1Node node) {
            if (node.getKind() == U1NodeKind.FILE && ((U1File) node).getSize() == null) {
                // Ignore files with null size.
                return;
            }
            final String[] selectionArgs = new String[] { node.getResourcePath() };
            final Cursor c = contentResolver.query(Nodes.CONTENT_URI, projection, selection, selectionArgs,
                    null);
            try {
                ContentValues values = Nodes.valuesFromRepr(node);
                if (c.moveToFirst()) {
                    final int id = c.getInt(c.getColumnIndex(Nodes._ID));
                    // Node is live.
                    childrenIds.remove(id);

                    // Update node.
                    final long generation = c.getLong(c.getColumnIndex(Nodes.NODE_GENERATION));
                    final long newGeneration = node.getGeneration();
                    if (generation < newGeneration) {
                        Log.v(TAG, "updating child node, new generation");
                        values.put(Nodes.NODE_IS_CACHED, false);
                        values.put(Nodes.NODE_DATA, "");

                        String data = c.getString(c.getColumnIndex(Nodes.NODE_DATA));
                        FileUtilities.removeSilently(data);

                        Uri uri = MetaUtilities.buildNodeUri(id);
                        ContentProviderOperation op = ContentProviderOperation.newUpdate(uri).withValues(values)
                                .build();
                        operations.add(op);
                        if (operations.size() > 10) {
                            try {
                                contentResolver.applyBatch(MetaContract.CONTENT_AUTHORITY, operations);
                                operations.clear();
                            } catch (RemoteException e) {
                                Log.e(TAG, "Remote exception", e);
                            } catch (OperationApplicationException e) {
                                MetaUtilities.setIsCached(resourcePath, false);
                                return;
                            }
                            Thread.yield();
                        }
                    } else {
                        Log.v(TAG, "child up to date");
                    }
                } else {
                    // Insert node.
                    Log.v(TAG, "inserting child");
                    ContentProviderOperation op = ContentProviderOperation.newInsert(Nodes.CONTENT_URI)
                            .withValues(values).build();
                    operations.add(op);
                    if (operations.size() > 10) {
                        try {
                            contentResolver.applyBatch(MetaContract.CONTENT_AUTHORITY, operations);
                            operations.clear();
                        } catch (RemoteException e) {
                            Log.e(TAG, "Remote exception", e);
                        } catch (OperationApplicationException e) {
                            MetaUtilities.setIsCached(resourcePath, false);
                            return;
                        }
                        Thread.yield();
                    }
                }
            } finally {
                c.close();
            }
        }

        @Override
        public void onUbuntuOneFailure(U1Failure failure) {
            MetaService.this.onUbuntuOneFailure(failure, receiver);
        }

        @Override
        public void onFailure(U1Failure failure) {
            MetaService.this.onFailure(failure, receiver);
        }

        @Override
        public void onFinish() {
            if (receiver != null)
                receiver.send(Status.FINISHED, data);
        }
    });

    // Remove nodes, which ids are left in childrenIds set.
    if (!childrenIds.isEmpty()) {
        Log.v(TAG, "childrenIDs not empty: " + childrenIds.size());
        final Iterator<Integer> it = childrenIds.iterator();
        while (it.hasNext()) {
            int id = it.next();
            Uri uri = MetaUtilities.buildNodeUri(id);
            ContentProviderOperation op = ContentProviderOperation.newDelete(uri).build();
            operations.add(op);
        }
    } else {
        Log.v(TAG, "childrenIDs empty");
    }

    try {
        long then = System.currentTimeMillis();
        contentResolver.applyBatch(MetaContract.CONTENT_AUTHORITY, operations);
        MetaUtilities.setIsCached(resourcePath, true);
        long now = System.currentTimeMillis();
        Log.d(TAG, "time to update children: " + (now - then));
        contentResolver.notifyChange(Nodes.CONTENT_URI, null);
    } catch (RemoteException e) {
        Log.e(TAG, "", e);
    } catch (OperationApplicationException e) {
        MetaUtilities.setIsCached(resourcePath, false);
        return;
    }
}

---

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