Example usage for java.lang Thread isAlive

Introduction

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

Prototype

public final native boolean isAlive();

Source Link

Document

Tests if this thread is alive.

Usage

From source file:org.apache.jackrabbit.core.integration.InterruptedQueryTest.java

@Test
public void testQuery() throws Exception {
    if (Constants.WINDOWS) {
        return;// w w w.  j  av a 2  s  .c om
    }
    for (int i = 0; i < 100; i++) {
        session.getRootNode().addNode("node" + i, "nt:unstructured");
    }
    session.save();
    final QueryManager qm = session.getWorkspace().getQueryManager();
    final AtomicBoolean stop = new AtomicBoolean(false);
    final List<Exception> exceptions = Collections.synchronizedList(new ArrayList<Exception>());
    Thread t = new Thread(new Runnable() {
        @Override
        public void run() {
            while (!stop.get() && exceptions.isEmpty()) {
                try {
                    // execute query
                    String stmt = "//*[@jcr:primaryType='nt:unstructured']";
                    qm.createQuery(stmt, Query.XPATH).execute();
                } catch (RepositoryException e) {
                    if (Constants.SUN_OS) {
                        // on Solaris it's OK when the root cause
                        // of the exception is an InterruptedIOException
                        // the underlying file is not closed
                        Throwable t = e;
                        while (t.getCause() != null) {
                            t = t.getCause();
                        }
                        if (!(t instanceof InterruptedIOException)) {
                            exceptions.add(e);
                        }
                    } else {
                        exceptions.add(e);
                    }
                }
            }
        }
    });
    t.start();
    for (int i = 0; i < 200 && t.isAlive(); i++) {
        t.interrupt();
        Thread.sleep((long) (100.0 * Math.random()));
    }
    stop.set(true);
    t.join();
    if (!exceptions.isEmpty()) {
        throw exceptions.get(0);
    }
}

---

From source file:org.apache.hadoop.hdfs.server.namenode.FSImage.java

private void waitForThreads(List<Thread> threads) {
    for (Thread thread : threads) {
        while (thread.isAlive()) {
            try {
                thread.join();// ww w .  j a  v  a  2  s.  c o  m
            } catch (InterruptedException iex) {
                LOG.error("Caught interrupted exception while waiting for thread " + thread.getName()
                        + " to finish. Retrying join");
            }
        }
    }
}

---

From source file:uk.ac.gla.terrier.probos.controller.ControllerServer.java

private void closeThread(Thread t) {
    if (t != null && t.isAlive()) {
        LOG.info("Stopping " + t.getName());
        t.interrupt();//  w ww.java2s.com
        try {
            t.join();
        } catch (InterruptedException ex) {
            ex.printStackTrace();
        }
    }
}

---

From source file:bixo.fetcher.SimpleHttpFetcherTest.java

@Test
public final void testInterruptedFetch() throws Exception {
    // Need to read in lots of data that we get very slowly
    Server server = startServer(new RandomResponseHandler(20000, 2 * 1000L), 8089);

    // Set no response rate, so that doesn't trigger an exception
    FetcherPolicy policy = new FetcherPolicy();
    policy.setMinResponseRate(FetcherPolicy.NO_MIN_RESPONSE_RATE);

    final BaseFetcher fetcher = new SimpleHttpFetcher(1, policy, ConfigUtils.BIXO_TEST_AGENT);
    final String[] failMsg = new String[1];

    Thread t = new Thread(new Runnable() {

        @Override/*from  w  w w.ja  va2s. c om*/
        public void run() {
            String url = "http://localhost:8089/test.html";
            try {
                fetcher.get(new ScoredUrlDatum(url));
                failMsg[0] = "No exception thrown, should have thrown an aborted by interrupt exception";
            } catch (AbortedFetchException e) {
                if (e.getAbortReason() != AbortedFetchReason.INTERRUPTED) {
                    failMsg[0] = "Wrong abort exception thrown, should have thrown an aborted by interrupt exception";
                }
            } catch (BaseFetchException e) {
                failMsg[0] = "Wrong exception thrown, should have thrown an aborted by interrupt exception";
            }
        }
    });

    t.start();
    t.interrupt();

    while (t.isAlive()) {
        Thread.sleep(100);
    }

    server.stop();

    if (failMsg[0] != null) {
        fail(failMsg[0]);
    }
}

---

From source file:voldemort.tools.DeleteKeysCLI.java

public void deleteKeys() throws Exception {
    Map<String, Thread> workers = new HashMap<String, Thread>();
    Map<String, DeleteKeysTask> tasks = new HashMap<String, DeleteKeysTask>();
    BufferedWriter statusWriter = new BufferedWriter(new FileWriter("status.txt", true));
    for (String store : this.stores) {
        DeleteKeysTask task = new DeleteKeysTask(store, storeClients.get(store), this.adminClient,
                serializerDefs.get(store), this.keyFile, this.qps, this.nodeid, this.deleteAllVersions,
                this.checkKeysCount);
        Thread worker = new Thread(task);
        workers.put(store, worker);/*from  w w  w  .  j av  a  2s .co  m*/
        tasks.put(store, task);
        statusWriter.write("Created thread " + worker.getId() + " for store " + store + "\n");
        System.out.println("Created thread " + worker.getId() + " for store " + store);
        worker.start();
    }
    statusWriter.flush();

    boolean isAllCompleted = false;
    while (isAllCompleted == false) {
        isAllCompleted = true;
        for (String store : stores) {
            Thread worker = workers.get(store);
            DeleteKeysTask task = tasks.get(store);

            System.out.print(task.getStatus());
            statusWriter.write(task.getStatus());
            if (task.isComplete()) {
                continue;
            }
            if (worker.isAlive() == false) {
                System.out.println("Thread processing it has died " + store);
                statusWriter.write("Thread processing it has died " + store + "\n");
                continue;
            }
            isAllCompleted = false;
        }
        statusWriter.flush();
        if (isAllCompleted == false) {
            Thread.sleep(1000 * 15);
        }
    }
    statusWriter.close();
}

---

From source file:eu.stratosphere.nephele.taskmanager.runtime.RuntimeTask.java

/**
 * Cancels or kills the task.// ww w  .  j a va 2s  .  c  o m
 * 
 * @param cancel
 *        <code>true/code> if the task shall be canceled, <code>false</code> if it shall be killed
 */
private void cancelOrKillExecution(final boolean cancel) {

    final Thread executingThread = this.environment.getExecutingThread();

    if (executingThread == null) {
        return;
    }

    if (this.executionState != ExecutionState.RUNNING && this.executionState != ExecutionState.FINISHING) {
        return;
    }

    LOG.info((cancel ? "Canceling " : "Killing ") + this.environment.getTaskNameWithIndex());

    if (cancel) {
        this.isCanceled = true;
        // Change state
        executionStateChanged(ExecutionState.CANCELING, null);

        // Request user code to shut down
        try {
            final AbstractInvokable invokable = this.environment.getInvokable();
            if (invokable != null) {
                invokable.cancel();
            }
        } catch (Throwable e) {
            LOG.error(StringUtils.stringifyException(e));
        }
    }

    // Continuously interrupt the user thread until it changed to state CANCELED
    while (true) {

        executingThread.interrupt();

        if (!executingThread.isAlive()) {
            break;
        }

        try {
            executingThread.join(1000);
        } catch (InterruptedException e) {
        }

        if (!executingThread.isAlive()) {
            break;
        }

        if (LOG.isDebugEnabled()) {
            LOG.debug("Sending repeated " + (cancel == true ? "canceling" : "killing") + " signal to "
                    + this.environment.getTaskName() + " with state " + this.executionState);
        }
    }
}

---

From source file:eu.stratosphere.nephele.taskmanager.Task.java

/**
 * Cancels or kills the task.// w  ww . j  av  a 2s .c  om
 *
 * @param cancel <code>true/code> if the task shall be canceled, <code>false</code> if it shall be killed
 */
private void cancelOrKillExecution(boolean cancel) {
    final Thread executingThread = this.environment.getExecutingThread();

    if (executingThread == null) {
        return;
    }

    if (this.executionState != ExecutionState.RUNNING && this.executionState != ExecutionState.FINISHING) {
        return;
    }

    LOG.info((cancel ? "Canceling " : "Killing ") + this.environment.getTaskNameWithIndex());

    if (cancel) {
        this.isCanceled = true;
        // Change state
        executionStateChanged(ExecutionState.CANCELING, null);

        // Request user code to shut down
        try {
            final AbstractInvokable invokable = this.environment.getInvokable();
            if (invokable != null) {
                invokable.cancel();
            }
        } catch (Throwable e) {
            LOG.error(StringUtils.stringifyException(e));
        }
    }

    // Continuously interrupt the user thread until it changed to state CANCELED
    while (true) {

        executingThread.interrupt();

        if (!executingThread.isAlive()) {
            break;
        }

        try {
            executingThread.join(1000);
        } catch (InterruptedException e) {
        }

        if (!executingThread.isAlive()) {
            break;
        }

        if (LOG.isDebugEnabled()) {
            LOG.debug("Sending repeated " + (cancel == true ? "canceling" : "killing") + " signal to "
                    + this.environment.getTaskName() + " with state " + this.executionState);
        }
    }
}

---

From source file:org.wandora.application.gui.topicpanels.webview.WebViewPanel.java

public Object executeSynchronizedScript(final String script) {
    scriptReturn = null;/*w ww.  j a  v a2 s . c o m*/
    if (script != null && script.length() > 0) {
        Thread runner = new Thread() {
            @Override
            public void run() {
                scriptReturn = webEngine.executeScript(script);
            }
        };
        Platform.runLater(runner);

        do {
            try {
                Thread.sleep(100);
            } catch (Exception ex) {

            }
        } while (runner.isAlive());
    }
    return scriptReturn;
}

---

From source file:edu.rit.flick.genetics.FastFileDeflator.java

@Override
public File deflate(final Configuration configuration, final File fileIn, final File fileOut) {
    assert fileIn.exists();

    try {/*from   w  ww  . j  a  v  a 2s.  c o m*/
        // Deflate to Directory
        final String outputDirectoryPath = fileOut.getPath()
                .replaceAll("." + Files.getFileExtension(fileOut.getPath()), FLICK_FAST_FILE_TMP_DIR_SUFFIX);

        final File tmpOutputDirectory = new File(outputDirectoryPath);
        if (tmpOutputDirectory.exists())
            FileUtils.deleteDirectory(tmpOutputDirectory);
        tmpOutputDirectory.mkdirs();

        final AtomicReference<Thread> cleanHookAtomic = new AtomicReference<Thread>();

        // Deflate Fast file to a temporary directory
        final Thread deflateToDirectoryThread = new Thread(() -> {
            try {
                // Deflate Fast file to a temporary directory
                deflateToDirectory(fileIn, tmpOutputDirectory);

                // Remove unused buffer space
                removeUnusedBufferSpace(outputDirectoryPath);

                // Compress Directory to a zip file
                deflateToFile(tmpOutputDirectory, fileOut);

                Runtime.getRuntime().removeShutdownHook(cleanHookAtomic.get());
            } catch (final Exception e) {
                if (!interrupted)
                    System.err.println(e.getMessage());
            }
        }, "Default_Deflation_Thread");

        // Make cleaning hook
        final Thread cleanHook = new Thread(() -> {
            interrupted = true;
            configuration.setFlag(VERBOSE_FLAG, false);
            configuration.setFlag(DELETE_FLAG, false);
            try {
                if (deflateToDirectoryThread.isAlive())
                    deflateToDirectoryThread.interrupt();

                // Remove unused buffer space
                removeUnusedBufferSpace(outputDirectoryPath);

                // Delete files that were not able to be processed
                FileUtils.deleteQuietly(tmpOutputDirectory);
                System.out.println();
            } catch (final IOException | InterruptedException e) {
                e.printStackTrace();
            }
        }, "Deflation_Cleaning_Thread");

        cleanHookAtomic.set(cleanHook);

        Runtime.getRuntime().addShutdownHook(cleanHook);

        deflateToDirectoryThread.start();
        deflateToDirectoryThread.join();

    } catch (final IOException | InterruptedException e) {
        e.printStackTrace();
    }

    return fileOut;
}

---

From source file:org.hyperic.hq.agent.server.session.AgentSynchronizer.java

private void executeJob(final StatefulAgentDataTransferJob job) throws InterruptedException {
    final String name = Thread.currentThread().getName() + "-" + executorNum.getAndIncrement();
    final Thread thread = new Thread(name) {
        @Override//from   ww  w  .  j a v a  2  s  . c om
        public void run() {
            job.setLastRuntime();
            if (agentIsPingable(job)) {
                try {
                    job.execute();
                } catch (Throwable e) {
                    if (e instanceof InterruptedException) {
                        log.warn("jobdesc=" + job.getJobDescription() + " was interrupted: " + e);
                        log.debug(e, e);
                    } else {
                        log.error(e, e);
                    }
                }
                return;
            } else {
                log.warn("Could not ping agent in order to run job " + getJobInfo(job));
            }
        }
    };
    thread.start();
    thread.join(WAIT_TIME);
    // if the thread is alive just try to interrupt it and keep going
    final boolean threadIsAlive = thread.isAlive();
    final boolean jobWasSuccessful = job.wasSuccessful();
    final AvailabilityManager availabilityManager = ctx.getBean(AvailabilityManager.class);
    final boolean platformIsAvailable = availabilityManager.platformIsAvailableOrUnknown(job.getAgentId())
            || isInRestartState(job.getAgentId());
    if (jobWasSuccessful) {
        // do nothing, this is good!
        return;
    } else if (platformIsAvailable) {
        if (threadIsAlive) {
            thread.interrupt();
        }
        job.incrementFailures();

        if (log.isDebugEnabled()) {
            log.debug("executeJob, number of failures for execute job=" + getJobInfo(job) + " RuntimeId: "
                    + job.getRuntimeTime() + " " + job.getNumberOfFailures());
        }
        if (job.discardJob()) {
            job.onFailure(
                    "Too many failures on agent " + job.getAgentId() + " RuntimeId: " + job.getRuntimeTime());
        } else {
            reAddJob(job);
            if (threadIsAlive) {
                log.warn("AgentDataTransferJob=" + getJobInfo(job) + " has take more than "
                        + WAIT_TIME / 1000 / 60
                        + " minutes to run.  The agent appears alive so therefore the job was"
                        + " interrupted and requeued.  Job threadName={" + thread.getName() + "}");
            } else {
                log.warn("AgentDataTransferJob=" + getJobInfo(job)
                        + " died and was not successful.  The agent appears alive and"
                        + " therefore the job was requeued. " + " Job threadName={" + thread.getName() + "}"
                        + " RuntimeId: " + job.getRuntimeTime());
            }
        }
    } else {
        if (threadIsAlive) {
            thread.interrupt();
            log.warn("AgentDataTransferJob=" + getJobInfo(job) + " has take more than " + WAIT_TIME / 1000 / 60
                    + " minutes to run.  Discarding job threadName={" + thread.getName() + "}");
        }
        // Can't ping agent and platform availability is down, therefore agent must be down
        job.onFailure("Platform associated with agent " + job.getAgentId() + " is not available");
    }
}

---

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