Example usage for java.util.concurrent.locks ReentrantLock unlock

Introduction

In this page you can find the example usage for java.util.concurrent.locks ReentrantLock unlock.

Prototype

public void unlock()

Source Link

Document

Attempts to release this lock.

Usage

From source file:RefinableHashSet.java

/**
 * Synchronize before adding, removing, or testing for item
 * @param x item involved/*from ww  w.  jav a2  s.c  o  m*/
 */
@Override
public void acquire(T x) {
    boolean[] mark = { true };
    Thread me = Thread.currentThread();
    Thread who;
    while (true) {
        do { // wait until not resizing
            who = owner.get(mark);
        } while (mark[0] && who != me);
        ReentrantLock[] oldLocks = this.locks;
        int myBucket = Math.abs(x.hashCode() % oldLocks.length);
        ReentrantLock oldLock = oldLocks[myBucket];
        oldLock.lock(); // acquire lock
        who = owner.get(mark);
        if ((!mark[0] || who == me) && this.locks == oldLocks) { // recheck
            return;
        } else { //  unlock & try again
            oldLock.unlock();
        }
    }
}

From source file:org.commoncrawl.service.parser.client.Dispatcher.java

public void nodeOnline(ParserNode theNode) throws IOException {
    final ReentrantLock lock = this.lock;
    lock.lock();/*from ww  w .  j  ava2s. co m*/
    try {
        boolean ok = _onlineNodes.add(theNode);
        assert ok;
        notEmpty.signal();
    } finally {
        lock.unlock();
    }
}

From source file:org.commoncrawl.service.parser.client.Dispatcher.java

public void nodeStatusChanged(ParserNode theNode) {
    final ReentrantLock lock = this.lock;
    lock.lock();/*from w  ww.j av  a2s  .  c  o  m*/
    try {
        _onlineNodes.remove(theNode);
        _onlineNodes.add(theNode);
        notEmpty.signal();
    } finally {
        lock.unlock();
    }
}

From source file:com.streamsets.datacollector.io.DataStore.java

/**
 * This method must be used after completing the write to output stream which was obtained by calling the
 * {@link #getOutputStream()} method./*from w  w  w . j  a v  a2 s  .  c om*/
 *
 * If the write operation was successful, then this method must be called after calling the
 * {@link #commit(java.io.OutputStream)} method. Otherwise it must be called after calling the {@link #close()} on the
 * output stream.
 *
 * Example usage:
 *
 * DataStore dataStore = new DataStore(...);
 * try (OutputStream os = dataStore.getOutputStream()) {
 *   os.write(..);
 *   dataStore.commit(os);
 * } catch (IOException e) {
 *   ...
 * } finally {
 *   dataStore.release();
 * }
 *
 */
public void release() {
    ReentrantLock lock;
    synchronized (DataStore.class) {
        lock = FILE_LOCKS.remove(file);
    }
    if (lock != null) {
        LOG.trace("Releasing the lock for '{}'", file);
        lock.unlock();
        LOG.trace("Released the lock for '{}'", file);
    }
}

From source file:org.apache.openejb.resource.jdbc.dbcp.BasicDataSource.java

public void close() throws SQLException {
    //TODO - Prevent unuathorized call
    final ReentrantLock l = lock;
    l.lock();/* w w w. j a  va 2s.  co  m*/
    try {
        try {
            unregisterMBean();
        } catch (final Exception ignored) {
            // no-op
        }

        super.close();
    } finally {
        l.unlock();
    }
}

From source file:org.apache.openejb.resource.jdbc.dbcp.BasicDataSource.java

public void setDefaultTransactionIsolation(final String s) {
    final ReentrantLock l = lock;
    l.lock();//from   ww  w.ja v  a2 s.com
    try {
        if (s == null || s.equals("")) {
            return;
        }
        final int level = IsolationLevels.getIsolationLevel(s);
        super.setDefaultTransactionIsolation(level);
    } finally {
        l.unlock();
    }
}

From source file:io.tilt.minka.business.impl.SemaphoreImpl.java

private void release_(Action action, Action cause) {
    Validate.notNull(action);/*from w w  w. ja  va 2  s  .  co  m*/
    // first unlock the dependencies so others may start running
    if (cause == null) { // only when not rolling back to avoid deadlock
        final List<Action> group = rules.get(action).getRelated(SIBLING);
        if (group != null) {
            group.forEach(a -> release_(a, action));
        }
    }
    switch (action.getScope()) {
    case LOCAL:
        // then unlock the main lock
        ReentrantLock lock = g(action);
        if (lock == null) {
            logger.error("{}: Locks not implemented for action: {} ", getClass().getSimpleName(), action);
        } else {
            if (logger.isDebugEnabled() && cause != null) {
                logger.debug("{}: {} is Releasing: {}", getClass().getSimpleName(), cause, action);
            }
            lock.unlock();
        }
        break;
    case GLOBAL:
        locks.releaseDistributedLock(nameForDistributedLock(action, null));
        break;
    }
}

From source file:org.eclipselabs.etrack.server.web.storage.AbstractStorageResource.java

@Override
protected Representation doConditionalHandle() throws ResourceException {
    ReentrantLock lock = null;

    synchronized (locks) {
        lock = locks.get(getReference().toString());

        if (lock == null) {
            lock = new ReentrantLock();
            locks.put(getReference().toString(), lock);
        }/*from   ww  w  .j av  a2  s .  com*/
    }

    lock.lock();

    try {
        Representation result = super.doConditionalHandle();
        return result;
    } finally {
        lock.unlock();
    }
}

From source file:com.zimbra.cs.db.SQLite.java

private void releaseMboxDbLock(Integer mboxId) {
    if (mboxId != null) {
        ReentrantLock lock = null;
        lock = lockMap.get(mboxId);/*from w w  w . ja  v a 2 s.  c  o m*/
        if (lock != null && lock.isHeldByCurrentThread()) {
            lock.unlock();
            ZimbraLog.dbconn.trace("unlocked mbox %d", mboxId);
        }
    }
}

From source file:org.apache.openejb.resource.jdbc.dbcp.BasicManagedDataSource.java

public Logger getParentLogger() throws SQLFeatureNotSupportedException {
    final ReentrantLock l = lock;
    l.lock();//from   www .j a v  a2  s . com
    try {

        if (null == this.logger) {
            this.logger = (Logger) DataSource.class.getDeclaredMethod("getParentLogger")
                    .invoke(super.dataSource);
        }

        return this.logger;
    } catch (final Throwable e) {
        throw new SQLFeatureNotSupportedException();
    } finally {
        l.unlock();
    }
}