Example usage for java.util.concurrent FutureTask FutureTask

Introduction

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

Prototype

public FutureTask(Callable<V> callable) 

Source Link

Document

Creates a FutureTask that will, upon running, execute the given Callable .

Usage

From source file:org.gytheio.messaging.camel.CamelRequestReplyMessageProducer.java

@Override
public Future<RP> asyncRequest(RQ request) {
    send(request);//from  ww w . j a v a  2 s. co  m
    pendingRequests.put(request.getRequestId(), null);

    FutureTask<RP> future = new FutureTask<>(new ReplyCallable(request.getRequestId()));
    executorService.execute(future);
    return future;
}

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From source file:org.apache.cxf.dosgi.systests.common.AbstractListenerHookServiceListenerTest.java

public void testBasicInvocation() throws Exception {

    Thread.currentThread().setContextClassLoader(ClientProxyFactoryBean.class.getClassLoader());

    Server server1 = null;//w w w  . j av  a  2 s.  co m
    Server server2 = null;
    ServiceTracker tracker = null;
    try {
        server1 = startServer(ADDRESS1, GreeterService.class, new GreeterServiceImpl());

        server2 = startServer(ADDRESS2, GreeterService.class, new GreeterServiceImpl());
        tracker = new ServiceTracker(bundleContext, GreeterService.class.getName(), null) {
            @Override
            public Object addingService(final ServiceReference reference) {
                Object result = super.addingService(reference);

                FutureTask<Map<GreetingPhrase, String>> future = new FutureTask<Map<GreetingPhrase, String>>(
                        new Callable<Map<GreetingPhrase, String>>() {
                            public Map<GreetingPhrase, String> call() {
                                return useService(reference);
                            }
                        });
                future.run();
                synchronized (mutex1) {
                    synchronized (mutex2) {
                        if (task1 == null) {
                            task1 = future;
                            mutex1.notify();
                        } else if (task2 == null) {
                            task2 = future;
                            mutex2.notify();
                        }
                    }
                }
                return result;
            }
        };
        tracker.open();
        // sleep for a bit
        Thread.sleep(2000);

        installDswIfNeeded();

        verifyGreeterResponse(task1, mutex1);
        verifyGreeterResponse(task2, mutex2);
    } finally {
        if (tracker != null) {
            tracker.close();
        }

        if (server1 != null) {
            server1.getDestination().shutdown();
            server1.stop();
        }

        if (server2 != null) {
            server2.getDestination().shutdown();
            server2.stop();
        }

    }
}

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From source file:plugin.chartboost.hasCachedMoreApps.java

/**
 * This method is called when the Lua function is called.
 * <p>//ww  w  . jav a 2  s. co  m
 * Warning! This method is not called on the main UI thread.
 * @param luaState Reference to the Lua state.
 *                 Needed to retrieve the Lua function's parameters and to return values back to Lua.
 * @return Returns the number of values to be returned by the Lua function.
 */
@Override
public int invoke(LuaState luaState) {
    try {
        // Corona Activity
        CoronaActivity coronaActivity = null;
        if (CoronaEnvironment.getCoronaActivity() != null) {
            coronaActivity = CoronaEnvironment.getCoronaActivity();
        }

        // The lua state
        final LuaState L = luaState;

        // See if the more apps page is cached
        FutureTask<Boolean> isCachedResult = new FutureTask<Boolean>(new Callable<Boolean>() {
            @Override
            public Boolean call() throws Exception {
                // Is more apps cached?
                boolean result = false;

                // If the chartboost instance is valid - could be invalid by calling this method before init invokes
                if (chartboostHelper.chartboostInstance != null) {
                    result = chartboostHelper.chartboostInstance.hasCachedMoreApps();
                }
                // Push the result
                L.pushBoolean(result);
                // Return the result
                return result;
            }
        });

        // Run the activity on the uiThread
        if (coronaActivity != null) {
            coronaActivity.runOnUiThread(isCachedResult);
            // Get the value of isCached
            boolean returnValue = isCachedResult.get();
        }
    } catch (Exception ex) {
        // An exception will occur if given an invalid argument or no argument. Print the error.
        ex.printStackTrace();
    }

    return 1;
}

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From source file:org.nuxeo.ecm.core.management.jtajca.CanMonitorTransactionsTest.java

@Test
public void isTotalRollbacksCorrect() throws InterruptedException, ExecutionException {
    assertThat(monitor.getActiveCount(), is(1L));
    FutureTask<Boolean> rollback = new FutureTask<Boolean>(new TestTotalRollbacks());
    executor.execute(rollback);/*from  w  w w.ja v  a2  s. c om*/
    assertThat(rollback.get(), is(true));
}

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From source file:org.punksearch.util.RenewableMemoizer.java

private FutureTask<V> makeFutureTask(final A arg) {
    return new FutureTask<V>(makeCallable(arg));
}

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From source file:com.ciphertool.genetics.algorithms.ConcurrentBasicGeneticAlgorithm.java

@Override
public int crossover(int initialPopulationSize) {
    if (this.population.size() < 2) {
        log.info(//from  w  ww .ja v a2s  .  co  m
                "Unable to perform crossover because there is only 1 individual in the population. Returning.");

        return 0;
    }

    long pairsToCrossover = Math.min((long) (initialPopulationSize * strategy.getCrossoverRate()),
            ((long) (this.population.size() / 2)));

    log.debug("Pairs to crossover: " + pairsToCrossover);

    Chromosome mom = null;
    Chromosome dad = null;
    int momIndex = -1;
    int dadIndex = -1;

    List<Chromosome> moms = new ArrayList<Chromosome>();
    List<Chromosome> dads = new ArrayList<Chromosome>();

    /*
     * We first remove all the parent Chromosomes since the children are
     * guaranteed to be at least as fit. This also prevents parents from
     * reproducing more than one time per generation.
     */
    for (int i = 0; i < pairsToCrossover; i++) {
        momIndex = this.population.selectIndex();
        moms.add(this.population.getIndividuals().get(momIndex));
        this.population.makeIneligibleForReproduction(momIndex);

        dadIndex = this.population.selectIndex();
        dads.add(this.population.getIndividuals().get(dadIndex));
        this.population.makeIneligibleForReproduction(dadIndex);
    }

    List<FutureTask<List<Chromosome>>> futureTasks = new ArrayList<FutureTask<List<Chromosome>>>();
    FutureTask<List<Chromosome>> futureTask = null;

    /*
     * Execute each crossover concurrently. Parents should produce two
     * children, but this is not necessarily always guaranteed.
     */
    for (int i = 0; i < pairsToCrossover; i++) {
        mom = moms.get(i);
        dad = dads.get(i);

        futureTask = new FutureTask<List<Chromosome>>(new CrossoverTask(mom, dad));
        futureTasks.add(futureTask);
        this.taskExecutor.execute(futureTask);
    }

    List<Chromosome> childrenToAdd = new ArrayList<Chromosome>();
    /*
     * Add the result of each FutureTask to the population since it
     * represents a new child Chromosome.
     */
    for (FutureTask<List<Chromosome>> future : futureTasks) {
        try {
            /*
             * Add children after all crossover operations are completed so
             * that children are not inadvertently breeding immediately
             * after birth.
             */
            childrenToAdd.addAll(future.get());
        } catch (InterruptedException ie) {
            log.error("Caught InterruptedException while waiting for CrossoverTask ", ie);
        } catch (ExecutionException ee) {
            log.error("Caught ExecutionException while waiting for CrossoverTask ", ee);
        }
    }

    for (Chromosome child : childrenToAdd) {
        this.population.addIndividualAsIneligible(child);
    }

    return (int) pairsToCrossover;
}

---

From source file:org.jactr.eclipse.runtime.launching.session.SessionTracker.java

protected void launchQueued(boolean queryFirst) {

    if (queryFirst) {
        /*//from w  ww.  j  av  a  2s.c  o  m
         * prompt the user. should we defer?
         */
        FutureTask<Integer> response = new FutureTask<Integer>(new Callable<Integer>() {
            public Integer call() {
                String[] buttons = new String[] { "Cancel All", "Run Queued" };
                MessageDialog prompt = new MessageDialog(Display.getDefault().getActiveShell(), "Runs queued",
                        null, "There are " + _queuedSessions.size() + " runs pending. Cancel them as well?",
                        MessageDialog.QUESTION, buttons, 1);
                return prompt.open();
            }
        });

        Display.getDefault().syncExec(response);

        try {
            if (response.get() == 0) {
                _queuedSessions.clear();
                return;
            }
        } catch (Exception e) {

        }
    }

    Object[] info = _queuedSessions.remove(0);
    ILaunchConfiguration configuration = (ILaunchConfiguration) info[0];
    String mode = (String) info[1];

    try {
        configuration.launch(mode, new NullProgressMonitor());
    } catch (CoreException e) {
        CorePlugin.error("Could not launch deferred execution " + configuration.getName(), e);
    }
}

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From source file:plugin.chartboost.hasCachedInterstitial.java

/**
 * This method is called when the Lua function is called.
 * <p>/*from  www  . jav  a2  s  .c o m*/
 * Warning! This method is not called on the main UI thread.
 * @param luaState Reference to the Lua state.
 *                 Needed to retrieve the Lua function's parameters and to return values back to Lua.
 * @return Returns the number of values to be returned by the Lua function.
 */
@Override
public int invoke(LuaState luaState) {
    try {
        // The named location
        final String namedLocation = luaState.checkString(1);

        // Corona Activity
        CoronaActivity coronaActivity = null;
        if (CoronaEnvironment.getCoronaActivity() != null) {
            coronaActivity = CoronaEnvironment.getCoronaActivity();
        }

        // The lua state
        final LuaState L = luaState;

        // See if the more apps page is cached
        FutureTask<Boolean> isCachedResult = new FutureTask<Boolean>(new Callable<Boolean>() {
            @Override
            public Boolean call() throws Exception {
                // Is more apps cached?
                boolean result = false;

                // If the chartboost instance is valid - could be invalid by calling this method before init invokes
                if (chartboostHelper.chartboostInstance != null) {
                    // Check the result
                    if (namedLocation != null) {
                        result = chartboostHelper.chartboostInstance.hasCachedInterstitial(namedLocation);
                    } else {
                        result = chartboostHelper.chartboostInstance
                                .hasCachedInterstitial("DefaultInterstitial");
                    }
                }
                // Push the result
                L.pushBoolean(result);
                // Return the result
                return result;
            }
        });

        // Run the activity on the uiThread
        if (coronaActivity != null) {
            coronaActivity.runOnUiThread(isCachedResult);

            // Get the value of isCached
            boolean returnValue = isCachedResult.get();
        }
    } catch (Exception ex) {
        // An exception will occur if given an invalid argument or no argument. Print the error.
        ex.printStackTrace();
    }

    return 1;
}

---

From source file:org.apache.cxf.dosgi.systests.common.rest.AbstractListenerHookServiceListenerTest.java

public void testBasicInvocation() throws Exception {

    Thread.currentThread().setContextClassLoader(JAXRSClientFactoryBean.class.getClassLoader());
    bundleContext.registerService(new String[] { "javax.ws.rs.ext.MessageBodyReader" },
            new AegisElementProvider(), new Hashtable());
    Server server1 = null;//from w w w . jav a  2 s  .co  m
    Server server2 = null;
    ServiceTracker tracker = null;
    try {
        server1 = startServer(ADDRESS1, GreeterService.class, new GreeterServiceImpl());

        server2 = startServer(ADDRESS2, GreeterService.class, new GreeterServiceImpl());
        tracker = new ServiceTracker(bundleContext, GreeterService.class.getName(), null) {
            @Override
            public Object addingService(final ServiceReference reference) {
                Object result = super.addingService(reference);

                FutureTask<GreeterInfo> future = new FutureTask<GreeterInfo>(new Callable<GreeterInfo>() {
                    public GreeterInfo call() {
                        return useService(reference);
                    }
                });
                future.run();
                synchronized (mutex1) {
                    synchronized (mutex2) {
                        if (task1 == null) {
                            task1 = future;
                            mutex1.notify();
                        } else if (task2 == null) {
                            task2 = future;
                            mutex2.notify();
                        }
                    }
                }
                return result;
            }
        };
        tracker.open();
        // sleep for a bit
        Thread.sleep(2000);

        installDswIfNeeded();

        verifyGreeterResponse(task1, mutex1);
        verifyGreeterResponse(task2, mutex2);
    } finally {
        if (tracker != null) {
            tracker.close();
        }

        if (server1 != null) {
            server1.getDestination().shutdown();
            server1.stop();
        }

        if (server2 != null) {
            server2.getDestination().shutdown();
            server2.stop();
        }

    }
}

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From source file:org.sakaiproject.tool.impl.SessionComponentRegressionTest.java

/**
 * Identical to {@link #testGetSessionReturnsSessionCreatedByStartSession()}
 * except that it tests the overload of <code>startSession()</code>
 * ({@link SessionComponent#startSession(String)}.
 * //from ww w  . ja  va 2 s . c om
 * @throws TimeoutException 
 * @throws ExecutionException 
 * @throws InterruptedException 
 */
public void testGetSessionAlwaysReturnsSessionStartedWithClientSpecifiedId()
        throws InterruptedException, ExecutionException, TimeoutException {
    final Session startedSession = sessionComponent.startSession("9876543210");
    assertSame(startedSession, sessionComponent.getSession(startedSession.getId()));
    assertSame(startedSession, sessionComponent.getSession(startedSession.getId())); // intentional duplicate
    // all threads should get the same Session obj for a given key
    FutureTask<Session> asynchGet = new FutureTask<Session>(new Callable<Session>() {
        public Session call() {
            return sessionComponent.getSession(startedSession.getId());
        }
    });
    new Thread(asynchGet).start();
    assertSame(startedSession, asynchGet.get(1, TimeUnit.SECONDS));
}

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