Example usage for java.util.concurrent.locks Lock lock

Introduction

In this page you can find the example usage for java.util.concurrent.locks Lock lock.

Prototype

lock

Source Link

Usage

From source file:org.codehaus.wadi.location.partitionmanager.local.BasicLocalPartition.java

public void onMessage(Envelope message, EvacuateIMToPM request) {
    Lock readLock = readWriteLock.readLock();
    readLock.lock();
    try {/* w  ww  . jav  a  2 s . c o  m*/
        LocalPartitionEvacuateIMToPMAction action = new LocalPartitionEvacuateIMToPMAction(dispatcher,
                nameToLocation, log);
        action.onMessage(message, request);
    } finally {
        readLock.unlock();
    }
}

From source file:com.ignorelist.kassandra.steam.scraper.FileCache.java

@Override
public InputStream getIfPresent(Object key) {
    final Lock readLock = stripedLock.get(key).readLock();
    readLock.lock();
    try {/*  w  w w  . j  a v  a  2s  .  c  o m*/
        return getIfPresentNonBlocking(key);
    } finally {
        readLock.unlock();
    }
}

From source file:com.ignorelist.kassandra.steam.scraper.FileCache.java

@Override
public void put(String key, InputStream value) {
    final Lock writeLock = stripedLock.get(key).writeLock();
    writeLock.lock();
    try {//ww w.  j a  v a  2  s . c  om
        putNonBlocking(key, value);
    } catch (IOException ex) {
        Logger.getLogger(FileCache.class.getName()).log(Level.SEVERE, null, ex);
    } finally {
        writeLock.unlock();
    }

}

From source file:gridool.db.sql.ParallelSQLExecJob.java

private static String invokeCsvOutputReduce(final Connection conn, final String reduceQuery,
        final String outputTableName, final ReadWriteLock rwlock, final Timings timings) throws GridException {
    File colDir = GridUtils.getWorkDir(true);
    final File outFile = new File(colDir, outputTableName + ".csv");
    final CsvWriter writer = new CsvWriter(outFile);
    final MutableBoolean first = new MutableBoolean(true);
    final MutableLong ansGenStart = new MutableLong(-1L);
    final ResultSetHandler rsh = new ResultSetHandler() {
        public Object handle(ResultSet rs) throws SQLException {
            if (first.getBoolean()) {
                ansGenStart.setValue(System.currentTimeMillis());
                first.setBoolean(false);
            }/*  ww  w  .j a v  a 2 s .c  om*/
            int numRows = writer.writeAll(rs, MONETDB_NULL_STRING, false);
            if (LOG.isInfoEnabled()) {
                LOG.info("Result row count: " + numRows);
            }
            return null;
        }
    };

    if (LOG.isInfoEnabled()) {
        LOG.info("Executing a Reduce SQL query: \n" + reduceQuery);
    }
    final Lock rlock = rwlock.readLock();
    try {
        rlock.lock();
        conn.setReadOnly(true);
        JDBCUtils.query(conn, reduceQuery, rsh);
    } catch (SQLException e) {
        String errmsg = "failed running a reduce query: " + reduceQuery;
        LOG.error(errmsg, e);
        try {
            conn.rollback();
        } catch (SQLException rbe) {
            LOG.warn("Rollback failed", rbe);
        }
        throw new GridException(errmsg, e);
    } finally {
        rlock.unlock();
        writer.close();
    }

    long answerGenStart = ansGenStart.getValue();
    long answerGenTime = (answerGenStart == -1L) ? 0L : System.currentTimeMillis() - answerGenStart;
    timings.setAnswerGenerationTime(answerGenTime);

    if (!outFile.exists()) {
        throw new IllegalStateException("Output file does not exist:" + outFile.getAbsolutePath());
    }
    return outFile.getAbsolutePath();
}

From source file:net.sf.fakenames.fddemo.BaseDirLayout.java

public MountInfo.Mount getFs(long dev_t) {
    final Lock lock = mountInfo.getLock();
    lock.lock();
    try {/*from w  ww  .  j  av a2  s.c o m*/
        return mountInfo.mountMap.get(dev_t);
    } finally {
        lock.unlock();
    }
}

From source file:de.taimos.daemon.spring.SpringDaemonAdapter.java

@Override
public final void doStop() throws Exception {
    try {//from  ww w.j  a va  2s.c om
        this.doBeforeSpringStop();
    } catch (Exception e) {
        throw new RuntimeException("Before spring stop failed", e);
    }
    Lock writeLock = this.rwLock.writeLock();
    try {
        writeLock.lock();
        if (this.context.get() == null) {
            throw new RuntimeException("Not yet started");
        }
        this.context.get().stop();
        this.context.get().close();
        this.context.set(null);
    } catch (Exception e) {
        throw new RuntimeException("spring stop failed", e);
    } finally {
        writeLock.unlock();
    }

    try {
        this.doAfterSpringStop();
    } catch (Exception e) {
        throw new RuntimeException("After spring stop failed", e);
    }
    super.doStop();
}

From source file:be.fgov.kszbcss.rhq.websphere.connector.security.TrustStoreManager.java

public void execute(TrustStoreAction action, boolean readOnly) throws Exception {
    Lock lock = readOnly ? truststoreLock.readLock() : truststoreLock.writeLock();
    lock.lock();
    try {/*from w ww  . j  ava  2 s  .c  o  m*/
        KeyStore truststore = loadTrustStore();
        action.execute(truststore);
        if (!readOnly) {
            if (log.isDebugEnabled()) {
                log.debug("Writing trust store with " + truststore.size() + " entries to " + truststoreFile);
            }
            OutputStream out = new FileOutputStream(truststoreFile);
            try {
                truststore.store(out, new char[0]);
            } finally {
                out.close();
            }
            reloadTrustManager();
        }
    } finally {
        lock.unlock();
    }
}

From source file:org.mule.transport.ConcurrentWorkTracker.java

public void addWork(Runnable work) {
    Lock lock = registryLock.writeLock();

    try {//from  w  w  w  . j  ava2 s . c om
        if (logger.isDebugEnabled()) {
            logger.debug("Tracking work: " + work);
        }
        lock.lock();
        works.add(work);
    } finally {
        lock.unlock();
    }
}

From source file:edu.internet2.middleware.shibboleth.common.relyingparty.provider.SAMLMDRelyingPartyConfigurationManager.java

/** {@inheritDoc} */
public RelyingPartyConfiguration getAnonymousRelyingConfiguration() {
    Lock readLock = getReadWriteLock().readLock();
    readLock.lock();
    try {// ww  w  .java2  s  .com
        return rpConfigs.get(ANONYMOUS_RP_NAME);
    } finally {
        readLock.unlock();
    }
}

From source file:edu.internet2.middleware.shibboleth.common.relyingparty.provider.SAMLMDRelyingPartyConfigurationManager.java

/** {@inheritDoc} */
public RelyingPartyConfiguration getDefaultRelyingPartyConfiguration() {
    Lock readLock = getReadWriteLock().readLock();
    readLock.lock();
    try {/* w w w  .  ja v a 2  s.  c  om*/
        return rpConfigs.get(DEFAULT_RP_NAME);
    } finally {
        readLock.unlock();
    }
}