Examples of EDU.oswego.cs.dl.util.concurrent.Mutex

Package EDU.oswego.cs.dl.util.concurrent

Examples of EDU.oswego.cs.dl.util.concurrent.Mutex

EDU.oswego.cs.dl.util.concurrent.Mutex
node keeps its own lock Node(Object x, Node n) { item = x; next = n; } } class List { protected Node head; // pointer to first node of list // Use plain java synchronization to protect head field. // (We could instead use a Mutex here too but there is no // reason to do so.) protected synchronized Node getHead() { return head; } boolean search(Object x) throws InterruptedException { Node p = getHead(); if (p == null) return false; // (This could be made more compact, but for clarity of illustration, // all of the cases that can arise are handled separately.) p.lock.acquire(); // Prime loop by acquiring first lock. // (If the acquire fails due to // interrupt, the method will throw // InterruptedException now, // so there is no need for any // further cleanup.) for (;;) { if (x.equals(p.item)) { p.lock.release(); // release current before return return true; } else { Node nextp = p.next; if (nextp == null) { p.lock.release(); // release final lock that was held return false; } else { try { nextp.lock.acquire(); // get next lock before releasing current } catch (InterruptedException ex) { p.lock.release(); // also release current if acquire fails throw ex; } p.lock.release(); // release old lock now that new one held p = nextp; } } } } synchronized void add(Object x) { // simple prepend // The use of `synchronized' here protects only head field. // The method does not need to wait out other traversers // who have already made it past head. head = new Node(x, head); } // ... other similar traversal and update methods ... }
@see Semaphore
[ Introduction to this package. ]

    */
   public StreamingCallback(Global global, I_StreamingCallback callback, long waitForChunksTimeout, long waitForClientReturnTimeout, boolean useQueue) 
      throws XmlBlasterException {
      this.callback = callback;
      this.global = global;
      this.mutex = new Mutex();
      String writerName = StreamingCallback.class.getName() + "-writer";
      synchronized(this.global) {
         this.writer = (Writer)this.global.getObjectEntry(writerName);
         if (this.writer == null) {
            this.writer = new Writer();

View Full Code Here

    /**
     * Creates query feed.
     */
    public QueryFeed()
    {
        syncParameterChange = new Mutex();


        baseTitle = null;
        queryType = null;
        parameter = null;
        renderTitle();

View Full Code Here

    }


    // The map of mutexes is keyed by the name of this persistent.
    // Try to find it first, If not found, create a new mutex and
    // add it to the map for this and future use.
    Mutex dbMutex = null;


    if ((dbMutex = (Mutex) dbLocks.get(dbKeyName)) == null)
    {
      if (log.isDebugEnabled())
      {
        log.debug("Creating new mutex for " + dbKeyName);
      }


      dbMutex = new Mutex();
      dbLocks.put(dbKeyName, dbMutex);
    }


    //Got handle to mutex, now acquire it
    try
    {
      dbMutex.acquire();
    }
    catch (InterruptedException ie)
    {
      throw new PersistenceException(ie);
    }

View Full Code Here

    {
      throw new PersistenceException("$keelNoDBLockMap");
    }


    String dbKeyName = getName();
    Mutex dbMutex = null;


    if ((dbMutex = (Mutex) dbLocks.get(dbKeyName)) == null)
    {
      throw new PersistenceException("DB lock mutex not found for " + dbKeyName);
    }


    dbMutex.release();


    if (log.isDebugEnabled())
    {
      log.debug("Released mutex lock for " + dbKeyName);
    }

View Full Code Here

        return p;
    }


    public void setup() throws ProtocolException {
        log = LogFactory.getLog(SocketProtocol.class.getName() + ":" + getNextConnectionId());
        sendMutex = new Mutex();
        headerBuffer = ByteBuffer.allocate(4);
        serviceReadMutex = new Object();
        serviceWriteMutex = new Object();


        if (address == null && acceptedSocketChannel == null) throw new IllegalStateException("No address set");

View Full Code Here

        return p;
    }


    public void setup() throws ProtocolException {
        log = LogFactory.getLog(SocketProtocol.class.getName() + ":" + getNextConnectionId());
        sendMutex = new Mutex();
        headerBuffer = ByteBuffer.allocate(4);
        serviceReadMutex = new Object();
        serviceWriteMutex = new Object();


        if (address == null && acceptedSocketChannel == null) throw new IllegalStateException("No address set");

View Full Code Here


    private final Sync readLock;
    private final Sync writeLock;


    public SynchornizedSynchChannel(SynchChannel next) {
        this(next, new Mutex(), new Mutex());
    }

View Full Code Here

public class SynchornizedAsynchChannel extends FilterAsynchChannel {


    private final Sync writeLock;


    public SynchornizedAsynchChannel(AsynchChannel next) {
        this(next, new Mutex());
    }

View Full Code Here

/*      */ 
/*      */ class MutexRNG extends SyncDelegatedRNG
/*      */ {
/*      */   public MutexRNG()
/*      */   {
/* 1950 */     super(new Mutex());
/*      */   }

View Full Code Here

/*     */   private final Object[] array;
/*     */ 
/*     */   public CVBuffer(int cap)
/*     */   {
/*  16 */     this.array = new Object[cap];
/*  17 */     this.mutex = new Mutex();
/*  18 */     this.notFull = new CondVar(this.mutex);
/*  19 */     this.notEmpty = new CondVar(this.mutex);
/*     */   }

View Full Code Here

0 1

TOP

Related Classes of EDU.oswego.cs.dl.util.concurrent.Mutex

com.salas.bb.domain.QueryFeed

de.iritgo.aktera.persist.defaultpersist.DefaultPersistent

EDU.oswego.cs.dl.util.concurrent.misc.CVBuffer

EDU.oswego.cs.dl.util.concurrent.misc.MutexRNG

org.activeio.filter.SynchornizedAsynchChannel

org.activeio.filter.SynchornizedSynchChannel

org.apache.geronimo.network.protocol.SocketProtocol

org.xmlBlaster.client.StreamingCallback

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.